Abstract:
Embodiments of the present invention disclose a microwave antenna adjustment apparatus, which relates to the field of communications technologies and is invented for resolving a problem that an existing adjustment apparatus has a low horizontal adjustment precision and is costly. The present invention is applicable to adjustment of a microwave antenna.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International Application No. PCT/CN2013/070739, filed on Jan. 18, 2013, which claims priority to Chinese Patent Application No. 201210277132.X, filed on Aug. 6, 2012, both of which are hereby incorporated by reference in their entireties. 
    
    
     TECHNICAL FIELD 
     The present invention relates to the field of communications technologies, and in particular, to a microwave antenna adjustment apparatus. 
     BACKGROUND 
     Microwave transmission is a widely used communication transmission manner. The microwave transmission requires a pair of microwave antennas for signal transmission. Therefore, to select microwave transmission, pairs of microwave antennas must be installed. A microwave antenna is generally pole-mounted on a tower or a rooftop. Therefore, complex operations such as installation at heights and antenna alignment are involved. The antenna alignment is categorized into coarse adjustment and fine adjustment. The coarse adjustment is to find signals. After the signals are found, fine adjustment is performed, which is to regulate the signals to comply with indicator values. After the fine adjustment is complete, the position of the antenna needs to be maintained unchanged, and the antenna is fastened. The alignment task is now complete. 
     A solution in the prior art for the fine adjustment of the microwave antenna is providing a hanger that has an adjustment function. The microwave antenna is mounted on the hanger, and installation personnel adjust a horizontal adjustment bolt and a pitching adjustment bolt on the hanger to drive the microwave antenna that is fastened on the hanger, thereby enabling the microwave antenna to horizontally rotate and rotate in a pitching manner. However, during the adjustment, angle adjustment is generally implemented by manually pulling the adjustment bolt. A precision of manual adjustment is low and movement occurs during the fastening. Therefore, repeated adjustment and fastening are required. 
     Another technical solution in the prior art is designing a hanger on which a worm and gear mechanism is mounted. The microwave antenna is fastened on the hanger. A horizontal adjustment handle is rotated when adjusting a horizontal azimuth angle, and a pitching adjustment handle is rotated when adjusting a pitching angle. However, although the adjustment precision may be improved by using the worm and gear mechanism, each hanger requires one worm and gear mechanism, thereby increasing material costs. 
     SUMMARY 
     Embodiments of the present invention provide a microwave antenna adjustment apparatus, to reduce adjustment costs based on the premise that a horizontal adjustment precision is met. 
     To achieve the foregoing objective, the embodiments of the present invention adopt the following technical solutions: 
     A microwave antenna adjustment apparatus includes a hoop that is permanently mounted on a base and a hanger to which the microwave antenna is mounted, where the hoop is hinged to the hanger by using a first hinged shaft. 
     The microwave antenna adjustment apparatus further includes an adjustment mechanism, where the adjustment mechanism includes a first bracket and a second bracket, where the first bracket is hinged to the second bracket by using a second hinged shaft, the first bracket is detachably connected to the hoop, and the second bracket is detachably connected to the hanger; a worm is disposed on the second bracket, and a worm gear cooperating with the worm is permanently connected to the first bracket; and a driving mechanism is disposed on the second bracket, where the driving mechanism is used for driving the worm to rotate so that the worm drives the worm gear to rotate. 
     Specifically, the driving mechanism includes a first gear and a second gear that mesh with each other, where the first gear is coaxially and permanently connected to the worm, and the second gear is connected to a hand-operated handle that drives the second gear. 
     Preferably, a screw permanently connected to the hanger is further disposed on the second bracket. 
     Optionally, the second bracket is connected, by using a bolt, to or fastened to the hanger. 
     In addition, a positioning hole is disposed on the hoop, and a positioning pin cooperating with the positioning hole is disposed on the first bracket. 
     Optionally, the hoop is connected, by using a bolt, to or fastened to the first bracket. 
     Further, the microwave antenna adjustment apparatus further includes a clamp nut and a threaded rod cooperating with the clamp nut, where one end of the threaded rod is hinged to the hanger, and the other end is connected to the hoop by using the clamp nut. 
     Further, a through hole is disposed on the hoop, the threaded rod penetrates through the through hole, and the clamp nut includes a first clamp nut and a second clamp nut, where the first clamp nut and the second clamp nut are separately located on two sides of the through hole. 
     The second gear is detachably connected to the hand-operated handle, and the hand-operated handle is further configured to drive a pitching adjustment nut on the hanger to rotate. 
     According to the microwave antenna adjustment apparatus provided by the embodiments of the present invention, during adjustment of the microwave antenna, the second bracket of the adjustment mechanism is connected to the hanger, and the first bracket is connected to the hoop. The worm cooperates with and is connected to the worm gear, and the hoop is generally connected to the base permanently. Therefore, the first bracket is fixed as opposed to the base. In this way, eventually, the second bracket rotates within a horizontal plane as opposed to the first bracket, and drives the microwave antenna that is connected to the hanger to rotate within the horizontal plane, thereby completing horizontal adjustment of the microwave antenna. After position adjustment is completed for the microwave antenna, the adjustment mechanism may be removed instead of permanently staying at heights. This extends a service life of the adjustment mechanism, reduces the number of adjustment mechanisms, and reduces costs. In addition, because the worm and worm mechanism is a high-precision linear adjustment mechanism, during horizontal adjustment of the microwave antenna, the adjustment process is a linearly changing process, microwave signals continuously change with no shift, and therefore the adjustment precision is high. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       To describe the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show merely some embodiments of the present invention, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts. 
         FIG. 1  is a schematic structural diagram of a microwave antenna adjustment apparatus according to an embodiment of the present invention; 
         FIG. 2  is a schematic structural diagram of an adjustment mechanism shown in  FIG. 1 ; 
         FIG. 3  is a schematic diagram, from another angle view of view, of a microwave antenna adjustment apparatus according to an embodiment of the present invention; 
         FIG. 4  is a schematic structural diagram of a worm and gear mechanism shown in  FIG. 2 ; 
         FIG. 5  is a schematic diagram, from another angle of view, of an adjustment mechanism shown in  FIG. 1 ; 
         FIG. 6  is a schematic diagram, from another angle of view, of a microwave antenna adjustment apparatus according to an embodiment of the present invention; and 
         FIG. 7  is a schematic diagram, from another angle of view, of a microwave antenna adjustment apparatus according to an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     The following clearly and describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. 
     As shown in  FIG. 1 ,  FIG. 2 , and  FIG. 3 , a specific embodiment illustrating a microwave antenna adjustment apparatus provided by the present invention is given. The microwave antenna adjustment apparatus includes a hoop  10  that is permanently mounted on a base  1 , and a hanger  20  to which a microwave antenna  2  is mounted. The hoop  10  is hinged to the hanger  20  by using a first hinged shaft  120 . 
     The microwave antenna adjustment apparatus further includes an adjustment mechanism  111 . The adjustment mechanism  111  includes a first bracket  30  and a second bracket  40 . The first bracket  30  is hinged to the second bracket  40  by using a second hinged shaft  32 , the first bracket  30  is detachably connected to the hoop  10 , and the second bracket  40  is detachably connected to the hanger  20 . 
     A worm  41  is disposed on the second bracket  40 , and a worm gear  31  cooperating with the worm  41  is permanently connected to the first bracket  30 . A driving mechanism  42  is further disposed on the second bracket  40 , where the driving mechanism  42  is used for driving the worm  41  to rotate so that the worm  41  drives the worm gear  31  to rotate. 
     According to the microwave antenna adjustment apparatus provided by this embodiment of the present invention, during adjustment of the microwave antenna, the second bracket  40  of the adjustment mechanism  111  is connected to the hanger  20 , and the first bracket  30  is connected to the hoop  10 . The worm  41  cooperates with and is connected to the worm gear  31 , and the hoop  10  is generally connected to the base  1  permanently. Therefore, the first bracket  30  is fixed as opposed to the base  1 . In this way, eventually, the second bracket  40  rotates within a horizontal plane as opposed to the first bracket  30 , and drives the microwave antenna  2  that is connected to the hanger  20  to rotate within the horizontal plane, thereby completing horizontal adjustment of the microwave antenna. After position adjustment is completed for the microwave antenna  2 , the adjustment mechanism  111  may be removed instead of permanently staying at heights. This extends a service life of the adjustment mechanism  111 , reduces the number of adjustment mechanisms  111 , and reduces costs. 
     In addition, because the worm and gear mechanism is a high-precision linear adjustment mechanism, during horizontal adjustment of the microwave antenna, the adjustment process is a linearly changing process, microwave signals continuously change with no shift, and therefore the adjustment precision is high. Therefore, this embodiment of the present invention resolves a problem that an existing adjustment apparatus has a low horizontal adjustment precision and is costly. 
     With respect to the foregoing embodiment, it should be noted that the worm and gear mechanism is preferably a worm and gear mechanism having a self-locking function. That is, only the worm drives the worm gear to rotate, and after adjustment to a desired position, other auxiliary positioning tools are not required; and the adjusted position is maintained in a stable state. Therefore, adjustment stability is higher. 
     Specifically, as shown in  FIG. 4 , the driving mechanism includes a first gear  44  and a second gear  45  that mesh with each other, where the first gear  44  is coaxially and permanently connected to the worm  41 , and the second gear  45  is connected to a hand-operated handle  46  that drives the second gear  45 . In this way, the second gear  45  may be driven, by rotating the hand-operated handle  46 , to rotate, and to further drive the first gear  44  to rotate. Eventually, the worm gear  31  is driven by the worm  41  to rotate. Generally, the second gear  45  serving as a driving gear is a small-diameter gear, whereas the first gear  44  serving as a driven gear is a large-diameter gear. In this way, cooperation of the first gear  44  and the second gear  45  is equivalent to a reduction mechanism, which may implement uniform linear actuation. In other embodiments of the present invention, other tools may be used to drive the second gear  45  to rotate or motor driving may be used for the entire driving mechanism. 
     Preferably, as shown in  FIG. 1 , a screw  43  permanently connected to the hanger  20  is further disposed on the second bracket  40 . The second bracket  40  may be permanently connected to the hanger  20  by using a common mechanical connection, for example, a screw and a bolt. Alternatively, the second bracket  40  may be designed as a certain structure that is directly fastened to the hanger. Still alternatively, as readily figured out by a person skilled in the art, the second bracket  40  may be detachably connected to the hanger  20  by using another mechanical connection manner. 
     Preferably, as shown in  FIG. 1  and  FIG. 5 , a positioning hole  11  is disposed on the hoop  10 , and a positioning pin  33  cooperating with the positioning hole  11  is disposed on the first bracket  30 . In this way, the first bracket  30  is precisely and permanently connected to the hoop  10 , so that no relative motion occurs between the first bracket  30  and the hoop  10 . In addition, the positioning pin  33  cooperates with and is connected to the positioning hole  11 , facilitating operations. That is, the positioning pin is inserted for use, and is removed if not used. The present invention is not limited thereto. The first bracket  30  and the hoop  10  may use another positioning manner, for example, connecting by using a screw or a bolt, or fastening. Alternatively, the first bracket  30  may not be directly connected to the hoop  10 , but may be only supported on the hoop  10 , and the first bracket  30  is designed as a structure capable of holding the base (for example, a pole) as long as no relative motion occurs between the first bracket  30  and the base. 
     Further, as shown in  FIG. 6 , the microwave antenna adjustment apparatus further includes a clamp nut  24  and a threaded rod  23  cooperating with the clamp nut  24 , where one end of the threaded rod  23  is hinged to the hanger  20  by using a third hinged shaft  22 , and the other end is connected to the hoop  10  by using the clamp nut  24 . In this way, during position adjustment of the microwave antenna, the clamp nut  24  is released so that the hanger  20  rotates within the horizontal plane as opposed to the hoop  10 . After the adjustment is complete, the clamp nut  24  is tightened to implement relative and fixed connection between the hanger  20  and the hoop  10 , thereby implementing fastening of the microwave antenna  2 . 
     Preferably, as shown in  FIG. 6 , a through hole is disposed on the hoop  10 , the threaded rod  23  penetrates through the through hole, and the clamp nut  24  includes a first clamp nut  241  and a second clamp nut  242 , where the first clamp nut  241  and the second clamp nut  242  are separately located on two sides of the through hole. In this way, when the microwave antenna  2  needs to be clockwise adjusted, the second clamp nut  242  is released so that the hanger  20  is capable of clockwise rotating; when the microwave antenna  2  needs to be counterclockwise rotated, the first clamp nut  241  is released so that the hanger  20  is capable of counterclockwise rotating. After the adjustment is complete, the correspondingly released clamp nut is tightened to implement fastening of the microwave antenna. 
     As shown in  FIG. 6 , the second gear  45  is detachably connected to the hand-operated handle  46 , and the hand-operated handle  46  may be further configured to drive a pitching adjustment nut  21  on the hanger  20  to rotate. The pitching adjustment nut  21  may cooperate with the hand-operated handle  46 . In this way, during pitching angle adjustment of the microwave antenna  2 , the hand-operated handle  46  may be used, and no other dedicated adjustment tools are required. Certainly, other tools or manual adjustment may also be used. 
     In this embodiment, as shown in  FIG. 6  and  FIG. 7 , a U-shaped metal sheet  26  is disposed on the lower end of the hanger  20 , the pitching adjustment nut  21  penetrates through an end-portion through hole of the U-shaped metal sheet  26 , a certain radial gap is arranged between the end-portion through hole and the pitching adjustment nut  21 , an adjustment threaded hole (not shown in the drawings) that matches the pitching adjustment nut  21  is disposed on the hanger  20 , and when the pitching adjustment nut  21  is rotated, the lower end of the hanger  20  slides along a U-shaped groove as opposed to the U-shaped metal sheet  26 . An upper threaded hole  251  and a lower threaded hole  252  are separately disposed on upper and lower ends of an installation plate  3  of the microwave antenna  2 , a threaded through hole corresponding to the upper threaded hole  251  is disposed on the upper end of the hanger  20 , and a first screw (not shown in the drawings) penetrates through the threaded through hole and the upper threaded hole. Corresponding punch holes (not shown in the drawings) are disposed on plates on the two sides of the U-shaped metal sheet  26 , the position of the punch hole corresponds to the lower threaded hole  252  of the installation plate  3 , and a second screw (not shown in the drawings) is inserted into the corresponding punch hole on the plate on one side and the lower threaded hole  252 . In this way, when the pitching adjustment nut  21  is rotated, due to the gap between the end-portion through hole and the pitching adjustment nut  21 , the U-shaped metal sheet  26  may move forward and backward, and rotate at a small amplitude, so that the installation plate  3  connected thereto is driven to rotate around the first screw and the second screw, thereby implementing adjustment of the pitching angle of the microwave antenna  2 . 
     During the pitching adjustment of the microwave antenna, the pitching adjustment nut is used because fine adjustment of the microwave antenna is mainly horizontal adjustment and the adjustment of the pitching angle is relatively simpler. Therefore, the worm and gear mechanism is not used during the adjustment of the pitching angle. In this way, the structure of the adjustment apparatus is simplified, and costs are reduced. 
     An adjustment process of the microwave antenna adjustment apparatus provided by this embodiment of the present invention is described with reference to  FIG. 1  to  FIG. 7 . 
     101. Fasten the first bracket  30  of the adjustment mechanism  111  on the hoop  10  by means of cooperation between the positioning pin  33  and the positioning hole  11 . 
     102. Tighten the screw  43  on the second bracket  40  of the adjustment mechanism  111 , so that the second bracket  40  is permanently connected to the hanger  20 . 
     103. Release the first clamp nut  251  or the second clamp nut  252  on the threaded rod  23  as required. 
     104. Rotate the hand-operated handle  46  so that the hanger  20 , under driving of the second bracket  40 , clockwise rotates or counterclockwise rotates, thereby implementing horizontal positioning. 
     105. Tighten the first clamp nut  251  or the second clamp nut  252  to implement fastening of the microwave antenna  2 . 
     106. Remove the hand-operated handle  46  from the adjustment mechanism  111 , and then sleeve the hand-operated handle  46  on the pitching adjustment nut  21  of the hanger  20 ; and rotate the hand-operated handle  46  to implement pitching adjustment of the microwave antenna  2 . 
     107. After the adjustment of the microwave antenna is complete, release the screw  43 , and remove the adjustment mechanism  111 . 
     The foregoing descriptions are merely specific implementation manners of the present invention, but are not intended to limit the protection scope of the present invention. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in the present invention shall fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.