SELF-PROPELLED CRUSHING MACHINE

Abstract: A self-propelled crushing machine comprising a hopper (11) and a crusher (8) connected to said hopper mounted on a vehicle body (1) provided with a travelling equipment (19), wherein a bottom plate (51) of said hopper (11) is reciprocatingly movable horizontally in the direction of a charge opening (8b) of the crusher (8). With this arrangement, the bottom plate (51) of the hopper (11) temporarily receives material to be crushed, and thereafter, delivers and drops the material into the charge opening (8b) of the crusher (8), so that, even if the gravity of the material and the amount of charge into the hopper are varied, the substantially equal amount of material to be crushed can be delivered into the crusher per unit time.

Description: The present invention relates to a self-propelling crushing machine with the features cited in the preamble of claim 1. This crushing machine is for crushing an object of crush, such as concrete waste and so forth in a site of taking down a building or the like. In a crushing machine of this type disclosed in JP-U-64 32744, the hopper is located above the crusher and connected to the inlet of the crusher by means of a narrow feeding channel. The material to be crushed has to pass this channel which bears the danger that the channel is blocked by the material itself. The motor for the crusher is provided between and in line with the crusher and the driving power source. JP-A-62 040 687 describes a crushing machine mounted on a follower having a hopper at the rear end and a motor at the front side thereof and in the middle of the width of the follower. The hopper is provided with a bottom plate which is positioned at the rear end of the follower. By a reciprocal movement of the bottom plate, the material to be crushed is discharged to an inlet of the crusher. The crushed material is discharged via an outlet at the bottom of the crusher into a container which has to be embedded in the ground. JP-A-03 130 859 discloses a crushing machine which is embodied as a lorry having the driver's cab with the engine in the front while a crusher and a hopper are distanced thereto in the back instead of a loading platform. A motor for the crusher is provided at an intermediate position between the crusher and the driver's cab and distanced to the latter one. DE-U-91 15 117 discloses a crushing machine mounted on a follower. A hopper is located at the rear end of the follower while the driving power source is located at the front side in the middle of the follower. It is the object of the present invention to provide an improved crushing machine of the above-mentioned type which is compact to be operable in small working sites and enables an easier feeding and conveyance of the material. According to the present invention, this object is attained with a crushing machine having the features cited in claim 1. Advantageous features and embodiments are cited in the dependent claims. With the construction set forth above, the bottom plate of the hopper once receives the object of crush and then feed it into the charge inlet of the crusher by reciprocal motion. As a result, substantially constant amount of the object of crush may be fed into the crusher per a unit period, even when the own weight of the object of crush or the charge amount thereof into the hopper fluctuates. Accordingly, stable crushing operation can be performed by the crusher. Also, the hopper may not be blocked by the object of crush. In the construction set forth above, it is preferred that said bottom plate of said hopper and a circular plate rotatingly driven by a motor are connected to each other by a link for reciprocally driving said bottom plate by rotation of said circular plate. With construction set forth above, a discharge conveyer is disposed between said left and right pair of traveling mechanisms. Also, said discharge conveyer is tiltable. BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be understood more fully from the detailed description given herebelow and from the accompanying drawings of the preferred embodiment of the invention, which, however, should not be taken to be limitative to the present invention, but are for explanation and understanding only. In the drawings: Fig. 1 is a side elevation of one embodiment of a self-propelling crushing machine according to the present invention; Fig. 2 is a front elevation of the above-mentioned embodiment; Fig. 3 is a plan view of the above-mentioned embodiment; Fig. 4 is a side elevation showing a detail of a discharge conveyer portion in the above-mentioned embodiment; and Fig. 5 is a section showing a detail of a hopper portion in the above-mentioned embodiment. BEST MODE FOR IMPLEMENTING THE INVENTION The preferred embodiment of a self-propelling crushing machine according to the present invention with reference to Figs. 1 to 5. As shown in Fig. 1 and 2, a pair of left and right track frames 3, 3 mounted on the lower left and right sides of a vehicular chassis 1 via cross members 2. On the track frame 3, a hydraulic motor 17, a sprocket 4 and an idler 5 driven by the hydraulic motor 17 are mounted. A crawler 6 is wound over the sprocket 4 and the idler 5 to form a crawler type drive mechanism 7. A pair of left and right drive mechanisms 7, 7 form a traveling device 19. On the vehicular chassis 1, a hopper 11 driven by a hydraulic motor, a crusher 8 which is connected to the hopper and driven by a hydraulic motor, an engine 10 for driving a hydraulic pump 18 which supplies a pressurized fluid to respective hydraulic motors and a valve group 9 for switching supply of the pressurized fluid from the hydraulic pump 18 to respective hydraulic motors are mounted. At a portion projecting sidewardly from one side surface 8a of the crusher 8 in the vehicular chassis 1 is provided with a hand rail 12 to serve as an operator's platform 13. A pair of left and right traveling levers 14, 14 are provided in the operator's platform 13. On the other hand, on a cover 40 located at the same side to the operator's platform 13, an operation lever 15 for controlling the hopper 11 and the crusher 8 by operating the valve group 9 is provided. Between a pair of the driving devices 7, 7, a discharge conveyer 16 is provided for vertical rocking motion. The inlet side 16a of the discharge conveyer 16 is located just beneath the discharge outlet of the crusher 8. On the other hand, the outlet side 16b of the discharge conveyer projects frontwardly from the driving mechanisms 7, 7 and the vehicular chassis 1. Next, the detail at respective parts will be discussed. As shown in Fig. 5, the hopper 11 is mounted on a base 50 of the vehicular chassis 1. A bottom plate 51 of the hopper 11 is adapted to horizontally reciprocate toward and away from the charging inlet 8b of the crusher 8. On the other hand, one end of a connecting link 53 is connected to the bottom plate 51 via a pin 52. The other end of the connecting link 53 is connected to a circular plate 54 via a pin 55. The circular plate 54 is driven to rotate by means of a hydraulic motor 56. When the circular plate 54 is driven to rotate, the bottom plate 51 is driven to reciprocate to feed the object of crush charged into the hopper 11 into the charging inlet 8b of the crusher 8. As shown in Fig. 3, the rotary shaft 20 of the crusher 8 is provided with a flywheel 41 at one end extending from the one side 8a. The other end of the rotary shaft is adapted to be driven by a hydraulic motor 24 via a pulley 21, a belt 22 and a pulley 23. The hydraulic motor 24 is positioned at the side or obliquely sideward position of the crusher 8 and at the opposite side to the operator's platform 13. On the other hand, the flywheel 41 is surrounded by the cover 40 at the one side. On the other hand, the pulley 21, the belt 22 and the pulley 23 are covered by a cover 42 at the other side. As shown in Figs. 2 and 4, the discharge conveyer 16 is provided with a drive pulley 26 and a driven pulley 27 on a frame 25 thereof. A belt 28 is wound around the drive pulley 26 and the driven pulley 27. The drive pulley 26 is adapted to be driven by a hydraulic motor 29. On the frame 25, a V-shaped belt guide 30 is provided so that the belt 28 may run through a V-shaped path. On the other hand, a supporting strip 31 fixed to the frame 25 is pivoted on a bracket 32 which is mounted on the vehicular chassis 1 for vertical pivotal movement about a pin 33. A receptacle piece 34 attached to the frame 25 is connected to the vehicular chassis 1 via a connecting member 35, such as a turn buckle, a rod, a wire or so forth. By adjusting the length of the adjusting member 35, the discharge conveyer 16 may rise and fall between an upwardly tilted position and a horizontal position. Since the shown embodiment is constructed as set forth above, when the object of crush is charged into the hopper 11, the bottom plate 31 once receives the charged object of crush, and subsequently, feeds the received object of crush to the charging inlet 8b of the crusher 8 by reciprocal motion thereof. As a result, even when the own weight of the object of crush or the charge amount of the object of crush into the hopper fluctuates, substantially constant amount of object of crush can be fed into the crusher 8. Accordingly, stable crushing operation can be performed by the crusher 8. Also, the hopper 11 may not be blocked by the object of crush. Although the invention has been illustrated and described with respect to exemplary embodiment thereof, it should be understood by those skilled in the art that the foregoing and various other changes, omissions and additions may be made therein and thereto, without departing from the scope of the present invention as set out in the appended claims. INDUSTRIAL APPLICABILITY As set forth above, the self-propelled crushing machine according to the present invention is useful in appropriately transporting to respective construction sites, and efficiently crushing large mass of the taken down construction, such as concrete block in the construction sites for recycling.

Claims: A self-propelled crushing machine comprising: a vehicular chassis (1) having a self-propelling travelling device (6, 7); a crusher (8) provided at a longitudinally intermediate position of said vehicular chassis (1); a driving power source (10) located at the rear side of said crusher (8); a motor (24) for the crusher (8); a hopper (11) connected to said crusher (8) for feeding object to be crushed; and a discharge conveyer (16) having an outlet to the front side of said crushing machine; characterised in that a bottom plate (51) is incorporated in said hopper (11), said bottom plate (51) being reciprocally movable in horizontal direction relative to a charge inlet (8b) of said crusher (8); said hopper (11) is located at the front side of said crushing machine; the motor (24) for the crusher (8) is located at the lateral position of said vehicular chassis (1). A self-propelled crushing machine according to claim 1, characterised in that the hopper (11) is disposed at one end portion of the vehicular chassis (1) in a longitudinal direction thereof so as to substantially align with the crusher (8); a motor means (24) for the crusher (8) is disposed at a side portion of the vehicular chassis (1); the bottom plate (51) disposed for the hopper is movable towards the charge inlet (8b) of the crusher (8); the bottom plate is operated by a rotatable disc (54) connected to the bottom plate (51) through a connection link (53); wherein an assembly of said hopper (11) and said bottom plate are supported on the vehicular chassis by means of a frame (50); said motor (24) for the crusher (8) and the crusher (8) are connected by means of a belt (22); said hopper (11), said motor (24) and said discharge conveyor (16) are arranged in a concentrated manner at an end of the vehicular chassis other than the location side of the driving power source (10) in the longitudinal direction of the vehicular chassis (1) by projecting said discharge conveyor means (16) longitudinally outside of the vehicular chassis on the hopper side; and the hopper (11) and a discharge end side of the discharge conveyor means (16) are closely disposed to each other. A self-propelled crushing machine according to claim 2, characterised in that said disc (54) and said connecting link (53) are provided beneath said bottom plate (51).

Inventors: NISHIDA YASUTAKA, TAMURA YUKIO, NISHIDA, YASUTAKA, TAMURA, YUKIO, NISHIDA, YASUTAKA, KAWASAKI FACTORY OF K. K., TAMURA, YUKIO, KAWASAKI FACTORY OF K. K.
Applicants: KOMATSU MFG CO LTD, KABUSHIKI KAISHA KOMATSU SEISAKUSHO
Application year: 1993
Main classification: B02C21
IPC codes: B02C21