Source: https://patents.google.com/patent/CN107917070A/en
Timestamp: 2020-07-15 01:52:15
Document Index: 707130281

Matched Legal Cases: ['art；16', 'art；31', 'art；32', 'art 3', 'art 3', 'art 3', 'arts 15', 'art 15', 'art 15', 'arts 15', 'arts 15', 'art 15', 'art 15', 'art 2', 'art 3', 'art 3', 'art 3', 'art 3', 'art 31', 'art 3', 'art 31', 'art 31', 'art 31', 'art 31', 'art 31', 'art 31', 'art 31', 'art 31', 'art 31', 'art 31', 'arts 3', 'art 15', 'art 31', 'art 31']

CN107917070A - Fixing piece for deep well pump and the lifting device including it - Google Patents
Fixing piece for deep well pump and the lifting device including it Download PDF
CN107917070A
CN107917070A CN201711169557.8A CN201711169557A CN107917070A CN 107917070 A CN107917070 A CN 107917070A CN 201711169557 A CN201711169557 A CN 201711169557A CN 107917070 A CN107917070 A CN 107917070A
CN201711169557.8A
陶爱武
张铜强
陈欢仁
2017-11-22 Application filed by 中国神华能源股份有限公司, 神华准格尔能源有限责任公司 filed Critical 中国神华能源股份有限公司
2017-11-22 Priority to CN201711169557.8A priority Critical patent/CN107917070A/en
2018-04-17 Publication of CN107917070A publication Critical patent/CN107917070A/en
239000004575 stone Substances 0.000 claims abstract description 45
The invention discloses a kind of fixing piece for deep well pump and the lifting device including it, the fixing piece for deep well pump includes：Stone tongs, clamping section and lifting portion are provided with the stone tongs, and the clamping section is used for the lift pipe for being clamped in deep well pump, and the lifting portion is used to be connected with haulage gear；Locating part, the locating part are arranged on the stone tongs, and can be moved back and forth along the stone tongs, closer or far from the lifting portion, so as to the closed or unlatching lifting portion.The present invention provides a kind of fixing piece for deep well pump and the lifting device including it, deep well pump is integrally hung into missile silo, reduce lifting difficulty, ensure that deep well pump is closely connected with suspender at the same time, avoid during hanging, deep well pump breaks off relations from suspender, and the operating environment of safety is provided for service personnel.
Fixing piece for deep well pump and the lifting device including it
The present invention relates to fixing piece, is filled more particularly, to a kind of fixing piece for deep well pump and the lifting including it Put.
Deep well pump is usually used in missile silo, by underground water lifting to earth's surface, for field irrigation and alpine region people and animals' water, Or for the water lift engineering such as river, reservoir, water channel.In use, immersible pump is pulled the plug, immersible pump is conveyed by lift pipe Water, usual lift can reach 300 meters.
In general, deep well pump operation in the 240m of underground, immersible pump, lift pipe and submersible cable always weigh about 12 tons, in case of Card resistance will increase considerably gross weight.When safeguarding deep well pump, it is difficult to which deep well pump integrally is transferred from missile silo, it is necessary to which deep well pump is torn open Unload to hang one by one after some sections, cause very big inconvenience for the maintenance and dismounting of deep well pump, seriously affect the work of deep well pump Progress.In addition, during missile silo Cheng Jing, there is weld lap and undercut, misalignment phenomenon for wall casing docking site；At the same time Crustal movement for many years will cause wall casing to deform or produce relative displacement.During handling lift pipe, often occur The flange of wall casing card resistance lift pipe, this intermittent card resistance form the shock loading to deep well pump, cause deep well pump from hanging Break off relations on tool, the safety of serious threat to service personnel, there are great accident potential.
Therefore, it is necessary to a kind of fixing piece for deep well pump and the lifting device including it, to solve the above problems.
In view of this, it is an object of the invention to propose a kind of fixing piece for deep well pump and the dress of the lifting including it Put, deep well pump is integrally hung into missile silo, reduce lifting difficulty, while ensure that deep well pump is closely connected with suspender, avoid hanging During dynamic, deep well pump breaks off relations from suspender, and the operating environment of safety is provided for service personnel.
Based on a kind of above-mentioned purpose fixing piece for deep well pump provided by the invention, including：
Stone tongs, clamping section and lifting portion are provided with the stone tongs, and the clamping section is used to be clamped in deep-well On the lift pipe of pump, the lifting portion is used to be connected with haulage gear；
Locating part, the locating part are arranged on the stone tongs, and can be moved back and forth along the stone tongs, to lean on Close or remote from the lifting portion, so as to the closed or unlatching lifting portion.
Preferably, the clamping section includes two clamping limbs for being oppositely arranged and being detachably connected, two clamping limbs On be both provided with groove, two grooves are enclosed circumferential groove.
Preferably, multiple supporting parts are each extended over out on two clamping limbs, multiple supporting parts are along the circumferential direction The periphery of groove is uniformly distributed.
Preferably, the lifting portion includes the mounting hole being arranged on the stone tongs and prolongs from the stone tongs The limiting plate of stretching, the haulage gear run through the mounting hole by traction rope, and the locating part can be connected to described spacing On plate, the traction rope is enclosed in the mounting hole.
Preferably, targeting port is provided with the stone tongs, the mounting hole is connected by the targeting port with outside, The width of the targeting port draws near to the mounting hole and is gradually reduced, the targeting port and the phase of the mounting hole connectivity part The diameter of the traction rope is not less than to the spacing at both ends.
Preferably, the locating part includes：Gag lever post and the sleeve being set on the gag lever post, the sleeve connection exist On the stone tongs, the gag lever post is installed in the stone tongs by the sleeve, and can be reciprocal along the sleeve It is mobile, closer or far from the limiting plate.
Preferably, the sleeve includes fixing end and external part, be provided with the fixing end for the gag lever post with The fixed part of the sleeve connection, the both ends of the gag lever post extend through the fixed part and are extended to from the external part The outside of the sleeve.
Furthermore it is preferred that the locating part further includes：Adjustment portion and elastic component, the adjustment portion are arranged on the fixation Between portion and the fixing end, the adjustment portion is moved with the sleeve and is connected, and the elastic component is set in the gag lever post On, the both ends of the elastic component are connected in the adjustment portion and the gag lever post respectively.
The present invention also provides a kind of lifting device, including：
At least one fixing piece described above for being used for deep well pump, the fixing piece are used for the lift for fixing the deep well pump Pipe；
Haulage gear, the haulage gear include tractive unit and drive division, and the drive division passes through the tractive unit and institute Fixing piece connection is stated, the drive division drives the tractive unit to draw the fixing piece movement.
Preferably, the fixing piece is multiple that multiple fixing pieces divide along the extending direction interval of the lift pipe Cloth, multiple fixing pieces are connected by the tractive unit with the drive division.
From the above it can be seen that fixing piece provided by the present invention for deep well pump and include its lifting device, Compared with prior art, has the following advantages：By installing stone tongs on lift pipe, haulage gear is connected with stone tongs Deep well pump movement is driven to lift lift pipe, deep well pump is integrally hung missile silo, reduces lifting difficulty.Locating part can it is closed or The lifting portion for being provided with haulage gear is opened, strengthens stone tongs and being completely embedded property of haulage gear, avoids during hanging, Deep well pump breaks off relations from suspender.Locating part is simple in structure, easy to operate, improves the security of hoisting process, is service personnel The operating environment of safety is provided.
By the way that embodiment is described below in conjunction with the accompanying drawings, features described above of the invention and technological merit will become More understand and be readily appreciated that.
Fig. 1 is the schematic diagram of the fixing piece for deep well pump used in the specific embodiment of the invention.
Fig. 2 is the clamping limb of the fixing piece for deep well pump and the connection status schematic diagram of locating part shown in Fig. 1.
Fig. 3 is the clamping limb of the fixing piece for deep well pump and the close-up schematic view of locating part shown in Fig. 2.
Fig. 4 is the decomposing state schematic diagram of the locating part of the fixing piece for deep well pump shown in Fig. 1.
Wherein reference numeral：
1：Stone tongs；11：Clamping limb；12：Groove；13：Circumferential groove；14：Mounting hole；
15：Supporting part；16：Screw hole；17：Targeting port；18：Limiting plate；2：Fastener；
21：Screw；22：Nut；3：Locating part；31：Fixed part；32：Adjustment portion；
33：Sleeve；34：Elastic component；35：Gag lever post.
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference Attached drawing, the present invention is described in more detail.Wherein identical parts are presented with like reference characters.Need what is illustrated It is that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to the direction in attached drawing.Use Word " interior " and " outer " refer respectively to towards or away from the direction of particular elements geometric center.
Fig. 1 is that the fixing piece for deep well pump that uses and the lifting device including it show in the specific embodiment of the invention It is intended to.Fig. 2 is the side view of the fixing piece for deep well pump shown in Fig. 1 and the lifting device including it.Such as Fig. 1 and Fig. 2 institutes Show, the fixing piece for deep well pump includes：Stone tongs 1 and locating part 3.
Clamping section and lifting portion are provided with stone tongs 1, clamping section is used for the lift pipe for being clamped in deep well pump, lifting Portion is used to be connected with haulage gear.
Locating part 3 is arranged on stone tongs 1, and can be moved back and forth along stone tongs 1, closer or far from lifting portion, So as to closed or unlatching lifting portion.
It is connected by clamping section with lift pipe, haulage gear is connected with lifting portion, can by locating part 3 close to lifting portion It is closed to the progress of lifting portion, to realize the close connection of deep well pump and haulage gear.During hanging, effectively prevent Haulage gear departs from the situation in lifting portion, causes deep well pump to depart from haulage gear.After the completion of lifting, travel limiter 3 is remote Lifting portion, you can by haulage gear with lifting part from.Locating part can be closed or opens the lifting portion for being provided with haulage gear, behaviour Make simply, to reduce the lifting difficulty of hoisting process, while improve the security of hoisting process, safety is provided for service personnel Operating environment.
To realize the convenient dismounting of stone tongs, dismounting speed is further improved, it is preferable that clamping section includes two relatively The clamping limb 11 for setting and being detachably connected, is both provided with groove 12 on two clamping limbs 11, two grooves 12 are enclosed ring To groove 13.Worker positioned at lift pipe both sides, can hold a clamping limb 11 respectively, be oppositely arranged on the both sides of lift pipe, will Lift pipe is placed in circumferential groove 13, then two clamping limbs 11 are locked connection, so as to which lift pipe is fixed.
In the present embodiment, circumferential groove 13 is used to clamp lift pipe, the diameter dimension of circumferential groove 13 and the diameter of lift pipe Match.In order to strengthen bonding strength, it is easy for installation and removal, two clamping limbs 11 are also connected by fastener 2, fastener 2 At least two, mirror symmetry is distributed in 13 opposite sides of circumferential groove.Fastener 2 includes but not limited to bolt, and bolt includes screw 21 and nut 22, two screw holes 16 are relatively set with clamping limb 11, and after lift pipe is placed in circumferential groove 13, screw 21 is installed On screw hole 16, nut 22 is installed on screw.By tightening bolt so that two clamping limbs 11 are close to each other, to strengthen Bonding strength between lift pipe and stone tongs 1.
By flanged joint between adjacent lift pipe, to strengthen the bonding strength between fixing piece and lift pipe, so as to Haulage gear fast lifting lift pipe and deep well pump, it is preferable that multiple supporting parts 15 are each extended over out on two clamping limbs 11, it is more The periphery of a supporting part 15 circumferentially groove 13 is uniformly distributed.Clamping section is connected to flange with respect on the lift pipe of lower section, supporting part 15 flange above clamping limb 11 provides a supporting role.
In the present embodiment, two supporting parts 15 are respectively arranged with two clamping limbs 11, two supporting parts 15 symmetrically divide Cloth is on clamping limb 11, and to provide the support force of balance for lift pipe, the connection improved between clamping limb 11 and lift pipe is strong Degree.The height of supporting part 15 is equal or approximately equal to the bolt height of mounting flange, when clamping section is clamped on lift pipe, folder Gripping arm 11 is abutted with flange, while supporting part 15 is connected on flange.
In general, stone tongs is connected with haulage gear by traction rope, traction rope can lift stone tongs movement, be into One step strengthens the close connection between traction rope and stone tongs, avoids stone tongs from departing from from traction rope, it is preferable that lifting Portion includes the mounting hole 14 being arranged on stone tongs 1 and the limiting plate 18 extended from stone tongs 1, and haulage gear passes through Traction rope penetrating mounting holes 14, locating part 2 can be connected on limiting plate 18, and traction rope is enclosed in mounting hole 14.Will be spacing Part 3 opens lifting portion, traction rope is entered mounting hole, then support locating part 3 close to lifting portion locating part 3 away from lifting portion It is connected on limiting plate 18, closed to lift portion, limitation traction rope departs from mounting hole.
In the present embodiment, mounting hole 14 is open through hole, and mounting hole 14 has round and smooth curved surface, avoids cutting from drawing Rope.A limiting plate 18, end set of the limiting plate 18 close to clamping limb 11 can be set on each clamping limb 11.
For convenience of installation traction rope, realize accurate, rapid installation, improve installation effectiveness, it is preferable that set on stone tongs 1 Targeting port 17 is equipped with, mounting hole 14 is connected by targeting port 17 with outside, and the width of targeting port 17 draws near to mounting hole 14 It is gradually reduced, the spacing of targeting port 17 and the opposite end of 14 connectivity part of mounting hole is not less than the diameter of traction rope.Led in installation During messenger, traction rope is introduced into targeting port 17, is gradually reduced since the width of targeting port 17 draws near to mounting hole 14, so Traction rope can enter precisely into mounting hole 14, reduce installation difficulty, improve traction rope under the guiding role of targeting port 17 Installation effectiveness.
Fig. 3 is the clamping limb of the fixing piece for deep well pump and the close-up schematic view of locating part shown in Fig. 2.Fig. 4 For the decomposing state schematic diagram of the locating part of the fixing piece for deep well pump shown in Fig. 1.As shown in Figure 3 and Figure 4, locating part 3 Including：Fixed part 31, adjustment portion 32, sleeve 33, elastic component 34 and gag lever post 35.
To optimize apparatus structure, operation difficulty is reduced, reduces cost of manufacture, reduces occupied space, it is preferable that locating part 3 Including：Gag lever post 35 and the sleeve 33 being set on gag lever post 35, sleeve 33 are connected on stone tongs 1, and gag lever post 35 passes through Sleeve 33 is installed in stone tongs 1, and can be moved back and forth along sleeve 33, closer or far from limiting plate 18.By along set The mobile gag lever post 35 of cylinder, closer or far from limiting plate 18, so as to closed or unlatching lifting portion.
In the present embodiment, sleeve 33 is welded on stone tongs 1, and gag lever post 35 is stretched into sleeve 33, and can with sleeve 33 Mobile link, such as be threadedly coupled, when gag lever post 33 is reduced in sleeve 33, away from limiting plate 18, unlatching lifting portion, at this time, leads Messenger is entered by targeting port 17 in mounting hole 14 or traction rope departs from mounting hole 14.When gag lever post 35 stretches out simultaneously out of sleeve 33 It is connected on limiting plate 18 or when the distance between gag lever post 35 and limiting plate 18 are less than traction rope width, mounting hole 14 is closed For relative closure structure, ensure that traction rope will not depart from out of mounting hole 14.
To reduce operation difficulty, dismounting traction rope is further facilitated, it is preferable that sleeve 33 includes fixing end and external part, The fixed part 31 for gag lever post 35 and sleeve connection is provided with fixing end, the both ends of gag lever post 34 extend through fixed part 31 And the outside of sleeve 33 is extended to from external part.The relative position that gag lever post 35 and sleeve 33 are limited by fixed part 31, when When traction rope is installed, remove fixed part 31, gag lever post 35 can relative sleeve 33 move up, away from limiting plate 18；After installation is complete, limit Position bar 35 can relative sleeve 33 move down, be connected on limiting plate 18, mounting part 31, to fix 33 phase of gag lever post 35 and sleeve To position.
In the present embodiment, fixed part 31 includes fixed pedestal and the mounting rod extended from fixed pedestal, fixed base The penetrating via for being fixedly connected with gag lever post is provided with seat and mounting rod.Fixed pedestal is welded and fixed with sleeve 33.
To further improve simple operation, while limit effect is improved, furthermore it is preferred that locating part further includes：Adjust Portion 32 and elastic component 34, adjustment portion 32 are arranged between the fixing end of fixed part 31 and sleeve 33, and adjustment portion 32 can with sleeve 33 Mobile link, elastic component 34 are set on gag lever post 35, and the both ends of elastic component 35 are connected to adjustment portion 32 and gag lever post 35 respectively On.Elastic component 34 is set on gag lever post 35, and adjustment portion 32 applies pressure to elastic component 34, elastic component 34 is carried for gag lever post 35 For lower pressure, traction rope can not be promoted on gag lever post 35, though between gag lever post 35 and limiting plate 18 there are less gap or It is subject to larger shock loading, is also avoided that traction rope departs from out of mounting hole.
In the present embodiment, gag lever post 35 includes first segment, interlude and second segment, and first segment is connected with fixed part 31, Second segment is used to be connected to limiting plate 18, and gag lever post 35 is the stair-stepping body of rod, increases from first segment, interlude second segment interval Add.Elastic component 34 includes but not limited to spring or shrapnel etc., and spring may be selected in elastic component 34, and spring is set on gag lever post 35, Interlude is such as set in, can be connected on second segment, and applies lower pressure for second segment.
Annular recess is provided with the fixing end of sleeve 33, adjustment portion 32 is arranged in annular recess, and and annular recess It is threadedly coupled, adjustment portion 32 can be threaded in or out in annular recess.
Adjustment portion 32 includes pedestal and the connecting rod extended from pedestal, and screw thread is provided with the outside wall surface of connecting rod, And be threadedly coupled with the internal face of annular recess, be provided with that the first end of gag lever post 35 passes through on pedestal and connecting rod through logical The junction of road, pedestal and connecting rod is provided with the limiting section abutted for spring.The fixed pedestal and adjustment portion of fixed part 31 The upper surface welding of 32 pedestal, the lower surface of pedestal can be connected in the fixing end of sleeve 33.
The elastic acting force of elastic component 34 is sustainably applied to gag lever post 35, ensure that the work efficiency of gag lever post 35. The elasticity of elastic component 34 can be adjusted according to actual needs by adjustment portion 32 and sleeve 33, ensure firmly installing property of traction rope While, ensure user when traction rope is won easily and fast.In addition, adjustment portion 32 and fixed part 31 can also facilitate User is overhauled or is replaced at any time component to locating part.
The installation of the fixing piece for deep well pump is described further below and using process.
Installation process includes：Between two locating parts 3 are arranged on two clamping limbs 11, and respectively with two clamping limbs 11 It is welded and fixed, two clamping limbs 11 are oppositely arranged on the both sides of lift pipe, and lift pipe is placed in groove 12；Along lift length of tube tune The position of whole clamping limb 11, makes on the flange that supporting part 15 is connected to above lift pipe；Mounting screw 21, screws in screw hole 16 Nut, makes lift pipe be connected in circumferential groove 13.
Included using process：Mobile fixed part 31 drives gag lever post 35 to be moved up along sleeve 33, makes gag lever post 35 away from limit Position plate 18, traction rope enter mounting hole 15 through targeting port 17；Move backward fixed part 31 and drive gag lever post 35 along under sleeve 33 Move, make gag lever post 35 close or be connected on limiting plate 18, while adjustment portion 32 is continued to be screwed into sleeve 33, be elastic component 34 provide lower pressure, and elastic component 34 promotes gag lever post 35 close or is connected to limiting plate, to avoid traction rope from dividing with stone tongs 1 From.
The present invention also provides a kind of lifting device, including：Fixing piece and haulage gear.
At least one fixing piece described above for being used for deep well pump, fixing piece are used for the lift pipe for fixing deep well pump；
Haulage gear, haulage gear include tractive unit and drive division, and drive division is connected by tractive unit with fixing piece, driving Portion's driving tractive unit traction fixing piece movement.
Fixing piece is installed on the lift pipe of deep well pump, drive division is connected by tractive unit with fixing piece, and drive division drives Dynamic tractive unit movement, tractive unit drive fixing piece movement, and fixing piece is by driving lift pipe to pull deep well pump to move integrally.Carry Rise device to be used to deep well pump integrally hanging missile silo, reduce lifting difficulty, while ensure that deep well pump is closely connected with suspender, keep away Exempt from during hanging, deep well pump breaks off relations from suspender, and the operating environment of safety is provided for service personnel.
In the present embodiment, tractive unit is traction rope, drive division for motor or other be used for realization the mechanism of driving effect.
To avoid fixing piece excess load from using, there is more preferable anti impulsion load ability, realize fast lifting, it is preferable that To be multiple, multiple fixing pieces are spaced apart fixing piece along the extending direction of lift pipe, multiple fixing pieces by tractive unit with Drive division connects.Tractive force can be uniformly distributed by haulage gear by fixing piece along lift pipe, reduce the influence of card resistance.
Understood from the description above with practice, fixing piece provided by the present invention for deep well pump and the lifting dress for including it Put, compared with prior art, has the following advantages：By installing stone tongs, haulage gear and stone tongs on lift pipe Connection drives deep well pump movement to lift lift pipe, deep well pump is integrally hung missile silo, reduces lifting difficulty.Locating part can be close The lifting portion for being provided with haulage gear is closed or opened, strengthens stone tongs and being completely embedded property of haulage gear, avoids hanging Cheng Zhong, deep well pump break off relations from suspender.Locating part is simple in structure, easy to operate, improves the security of hoisting process, for maintenance Personnel provide the operating environment of safety.
Those of ordinary skills in the art should understand that：The foregoing is merely the specific embodiment of the present invention, and The limitation present invention is not used in, all any modification, equivalent substitution, improvement and etc. within the purport of the present invention, done, should all include Within protection scope of the present invention.
A kind of 1. fixing piece for deep well pump, it is characterised in that including：
Stone tongs, clamping section and lifting portion are provided with the stone tongs, and the clamping section is used to be clamped in deep well pump On lift pipe, the lifting portion is used to be connected with haulage gear；
Locating part, the locating part are arranged on the stone tongs, and can be moved back and forth along the stone tongs, come it is close or Away from the lifting portion, so as to the closed or unlatching lifting portion.
2. it is used for the fixing piece of deep well pump as claimed in claim 1, it is characterised in that
The clamping section includes two clamping limbs for being oppositely arranged and being detachably connected, and is both provided with two clamping limbs recessed Groove, two grooves are enclosed circumferential groove.
3. it is used for the fixing piece of deep well pump as claimed in claim 2, it is characterised in that
Multiple supporting parts are each extended over out on two clamping limbs, multiple supporting parts are uniform along the periphery of the circumferential groove Distribution.
4. as claims 1 to 3 any one of them is used for the fixing piece of deep well pump, it is characterised in that
The lifting portion includes the mounting hole being arranged on the stone tongs and extends from the stone tongs spacing Plate, the haulage gear run through the mounting hole by traction rope, and the locating part can be connected on the limiting plate, by described in Traction rope is enclosed in the mounting hole.
5. it is used for the fixing piece of deep well pump as claimed in claim 4, it is characterised in that
Targeting port is provided with the stone tongs, the mounting hole is connected by the targeting port with outside, the targeting port Width draw near and be gradually reduced to the mounting hole, between the opposite end of the targeting port and the mounting hole connectivity part Diameter away from not less than the traction rope.
6. it is used for the fixing piece of deep well pump as claimed in claim 5, it is characterised in that
The locating part includes：Gag lever post and the sleeve being set on the gag lever post, the sleeve connection is in the hanging clamp On tool, the gag lever post is installed in the stone tongs by the sleeve, and can be moved back and forth along the sleeve, is come close Or away from the limiting plate.
7. it is used for the fixing piece of deep well pump as claimed in claim 6, it is characterised in that
The sleeve includes fixing end and external part, is provided with the fixing end for the gag lever post and the sleeve connection Fixed part, the both ends of the gag lever post extend through the fixed part and extend to the outer of the sleeve from the external part Portion.
8. it is used for the fixing piece of deep well pump as claimed in claim 7, it is characterised in that
The locating part further includes：Adjustment portion and elastic component, the adjustment portion be arranged on the fixed part and the fixing end it Between, the adjustment portion is moved with the sleeve and is connected, and the elastic component is set on the gag lever post, and the two of the elastic component End is connected in the adjustment portion and the gag lever post respectively.
A kind of 9. lifting device, it is characterised in that including：
At least one fixing piece for being used for deep well pump such as claim 1 to 8 any one of them, the fixing piece are used to fix institute State the lift pipe of deep well pump；
Haulage gear, the haulage gear include tractive unit and drive division, the drive division by the tractive unit with it is described solid Determine part connection, the drive division drives the tractive unit to draw the fixing piece movement.
10. lifting device as claimed in claim 9, it is characterised in that
The fixing piece is multiple, and multiple fixing pieces are spaced apart along the extending direction of the lift pipe, multiple described Fixing piece is connected by the tractive unit with the drive division.
CN201711169557.8A 2017-11-22 2017-11-22 Fixing piece for deep well pump and the lifting device including it CN107917070A (en)
CN201711169557.8A CN107917070A (en) 2017-11-22 2017-11-22 Fixing piece for deep well pump and the lifting device including it
CN107917070A true CN107917070A (en) 2018-04-17
ID=61897671
CN (1) CN107917070A (en)
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