Engineering vehicle supporting leg turnover device

Abstract

The utility model provides an engineering vehicle landing leg turnover device which comprises a guide wheel and a mooring rope, the guide wheel is fixedly connected with a landing leg, the landing leg is further fixedly connected with a turnover oil cylinder, a piston rod of the turnover oil cylinder is further hinged to a movable pulley, one end of the mooring rope is fixedly connected with the guide wheel, and the other end of the mooring rope is fixedly connected with a positioning pin. The cable is wound around the peripheral face of the movable pulley and the peripheral face of the guide wheel, the guide wheel is hinged to the supporting shaft, the positioning pin and the supporting shaft are both fixedly connected with the cross beam, and the cross beam is installed on the engineering vehicle. By the adoption of the technical scheme, when the piston rod of the overturning oil cylinder stretches out and draws back, the cable slides along the outer circumferential face of the movable pulley and the outer circumferential face of the guide wheel, the guide wheel and the supporting leg are made to turn over correspondingly, and compared with the prior art, the supporting leg can turn over two unit strokes every time the piston rod of the overturning oil cylinder stretches out and draws back by one unit stroke. And therefore, the overall appearance volume of the utility model can be reduced, and the manufacturing difficulty of the utility model can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering vehicles, in particular to an outrigger flipping device for an engineering vehicle. Background Art

[0002] Engineering vehicles can be regarded as a kind of engineering equipment with a working device installed on a truck. Since engineering vehicles are easy to move, they play an important role in the fields of transportation, civil construction, emergency rescue and disaster relief. According to Newton's third law of mechanics, since the output torque of the working device is very large, the working device will produce a huge reaction force on the main body of the engineering vehicle when it is running. Therefore, in order to ensure the safe and stable operation of the working device and prevent the engineering vehicle from tipping over or overturning, it is necessary to install auxiliary support devices or positioning devices on the engineering vehicle to firmly position the main body of the engineering vehicle in a fixed position. Common auxiliary support devices include retractable outriggers. Before the working device is operated, the outriggers are unfolded and the engineering vehicle is supported on the ground by the outriggers, thereby ensuring the stable operation of the working device. When the working device is idle, the outriggers need to be folded around the engineering vehicle.

[0003] For example, the patent document with the announcement number "CN204384768U" discloses a hydraulically controlled zipper-type automatic flip leg mechanism for a truck-mounted crane, comprising a vertical leg cylinder (2) and a movable leg (7), wherein the movable leg is movably connected to one side of the vertical leg cylinder, and a locking plate (5) is provided on the other side of the vertical leg cylinder. It also comprises a hydraulic control (1), a sub-cylinder (9), a pulley (11) and a plate chain (12), wherein the sub-cylinder is fixed to the vertical leg cylinder by a fastener (10), the pulley is connected to the circular shaft of the movable leg, the pulley has a groove around it, the plate chain is arranged in the groove of the pulley, one end of the plate chain is fixed to the movable leg by an adjusting screw (3), and the other end is fixed to the top of the piston rod (8) of the sub-cylinder, and the sub-cylinder is connected to the hydraulic control. The patented technology realizes automatic flipping of the outrigger. However, since the plate chain (12) is not retractable, the movement stroke of the auxiliary cylinder piston rod determines the flipping angle of the outrigger. If the length of the outrigger increases, the movement stroke of the auxiliary cylinder needs to be increased, and the external dimensions of the corresponding auxiliary cylinder also have to be increased, making the already limited storage space in the engineering vehicle even more cramped, which not only increases the difficulty of manufacturing the corresponding flipping device, but also makes it difficult to promote and apply the patented technology. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an outrigger flipping device for an engineering vehicle.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides an engineering vehicle outrigger flipping device, comprising a guide wheel and a cable, wherein the guide wheel is fixedly connected to the outrigger, the outrigger is also fixedly connected to a flipping oil cylinder, the piston rod of the flipping oil cylinder is also hinged to a movable pulley, one end of the cable is fixedly connected to the guide wheel, the other end of the cable is fixedly connected to a positioning pin, and the cable is also wound around the outer circumference of the movable pulley and the outer circumference of the guide wheel, the guide wheel is also hinged to a supporting shaft, the positioning pin and the supporting shaft are both fixedly connected to a crossbeam, and the crossbeam is installed on the engineering vehicle.

[0007] The supporting shaft is also fixedly connected to the end cover, and the guide wheel is arranged between the cross beam and the end cover.

[0008] A supporting oil cylinder is also arranged inside the supporting leg.

[0009] The piston rod of the supporting oil cylinder is also hinged to the supporting ground block.

[0010] The length direction of the supporting leg and the axial direction of the piston rod of the tilting oil cylinder are parallel to each other.

[0011] The axial direction of the support shaft and the axial direction of the positioning pin are parallel to each other.

[0012] The cables may be replaced by steel wire ropes.

[0013] The guide wheel is in the shape of a fan cylinder as a whole.

[0014] The cross beam can be extended and retracted along the width direction of the engineering vehicle.

[0015] The beneficial effect of the utility model is that: by adopting the technical scheme of the utility model, when the piston rod of the flip cylinder is extended or retracted, the cable slides along the outer circumferential surface of the movable pulley and the outer circumferential surface of the guide wheel. Although the cable is not retractable, the effective connection distance between the piston rod of the flip cylinder and the locating pin is shortened, thereby causing the guide wheel and the support leg to flip accordingly. Compared with the prior art, since the end of the flip cylinder is hinged to the movable pulley, the support leg will flip two unit strokes for each unit extension or retraction of the piston rod of the flip cylinder, which is beneficial to reducing the overall external volume of the utility model and reducing the manufacturing difficulty of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric drawing of the utility model;

[0017] Figure 2 This utility model Figure 1 Exploded diagram of

[0018] Figure 3 This is the front view of the utility model when the tilting oil cylinder is retracted;

[0019] Figure 4 This is the front view of the utility model when the tilting cylinder is extended;

[0020] Figure 5 It is a schematic diagram of the connection between the utility model and an engineering vehicle.

[0021] In the figure: 1-guide wheel, 2-cable, 3-leg, 4-turning cylinder, 5-movable pulley, 6-locating pin, 7-support shaft, 8-crossbeam, 9-end cover, 10-support block, 11-engineering vehicle. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0023] like Figures 1 to 5 As shown, the utility model provides an engineering vehicle leg flipping device, including a guide wheel 1 and a cable 2, the guide wheel 1 is fixedly connected to the leg 3, the leg 3 is also fixedly connected to the flip cylinder 4, the piston rod of the flip cylinder 4 is also hinged to the movable pulley 5, one end of the cable 2 is fixedly connected to the guide wheel 1, the other end of the cable 2 is fixedly connected to the positioning pin 6, and the cable 2 is also wound around the outer circumference of the movable pulley 5 and the outer circumference of the guide wheel 1, the guide wheel 1 is also hinged to the supporting shaft 7, the positioning pin 6 and the supporting shaft 7 are both fixedly connected to the crossbeam 8, and the crossbeam 8 is installed on the engineering vehicle 11.

[0024] By adopting the technical solution of the utility model, when the piston rod of the flip cylinder is extended or retracted, the cable slides along the outer circumferential surface of the movable pulley and the outer circumferential surface of the guide wheel. Although the cable is not retractable, the effective connection distance between the piston rod of the flip cylinder and the locating pin is shortened, thereby causing the guide wheel and the support leg to flip accordingly. Compared with the prior art, since the end of the flip cylinder is hinged to the movable pulley, the support leg will flip two unit strokes for every unit extension or retraction of the piston rod of the flip cylinder, which is beneficial to reducing the overall external volume of the utility model and reducing the manufacturing difficulty of the utility model.

[0025] Specifically, the support shaft 7 is also fixedly connected with the end cover 9, and the guide wheel 1 is arranged between the cross beam 8 and the end cover 9. A supporting oil cylinder is also arranged in the support leg 3. The piston rod of the supporting oil cylinder is also hinged with the supporting block 10. Thus, the utility model can be stably supported on the ground.

[0026] In addition, the length direction of the outrigger 3 is parallel to the axial direction of the piston rod of the tilting oil cylinder 4. The axial direction of the support shaft 7 is parallel to the axial direction of the positioning pin 6. The cable 2 can be replaced by a steel wire rope. The guide wheel 1 is in the shape of a fan cylinder. Since the cable 2 is wound around the outer peripheral surface of the guide wheel 1, the larger the radius of the guide wheel 1, the longer the length of the corresponding cable 2 is, which is conducive to increasing the tilting stroke of the outrigger.

[0027] In addition, the crossbeam 8 can be extended and retracted along the width direction of the engineering vehicle 11. When the engineering vehicle is idle or the working device has completed its work task, the outriggers can be effectively folded to the side of the engineering vehicle, reducing the protruding space occupied by the engineering vehicle.

Claims

1. A leg flipping device for an engineering vehicle, characterized in that: The invention comprises a guide wheel (1) and a cable (2), wherein the guide wheel (1) is fixedly connected to a support leg (3), the support leg (3) is also fixedly connected to a tilting cylinder (4), the piston rod of the tilting cylinder (4) is also hinged to a movable pulley (5), one end of the cable (2) is fixedly connected to the guide wheel (1), the other end of the cable (2) is fixedly connected to a positioning pin (6), and the cable (2) is also wound around the outer peripheral surface of the movable pulley (5) and the outer peripheral surface of the guide wheel (1), the guide wheel (1) is also hinged to a supporting shaft (7), the positioning pin (6) and the supporting shaft (7) are both fixedly connected to a crossbeam (8), and the crossbeam (8) is installed on an engineering vehicle (11).

2. The engineering vehicle outrigger flipping device according to claim 1, characterized in that: The supporting shaft (7) is also fixedly connected to the end cover (9), and the guide wheel (1) is arranged between the cross beam (8) and the end cover (9).

3. The engineering vehicle outrigger flipping device according to claim 1, characterized in that: A supporting oil cylinder is also provided inside the supporting leg (3).

4. The engineering vehicle outrigger flipping device according to claim 3, characterized in that: The piston rod of the supporting oil cylinder is also hinged to the supporting block (10).

5. The engineering vehicle outrigger flipping device according to claim 1, characterized in that: The length direction of the supporting leg (3) and the axial direction of the piston rod of the tilting oil cylinder (4) are parallel to each other.

6. The engineering vehicle outrigger flipping device according to claim 1, characterized in that: The axial direction of the supporting shaft (7) and the axial direction of the positioning pin (6) are parallel to each other.

7. The engineering vehicle outrigger flipping device according to claim 1, characterized in that: The cable (2) can be replaced by a steel wire rope.

8. The engineering vehicle outrigger flipping device according to claim 1 or 2, characterized in that: The guide wheel (1) is in the shape of a fan cylinder as a whole.

9. The engineering vehicle outrigger flipping device according to claim 1 or 2, characterized in that: The cross beam (8) can be extended and retracted along the width direction of the engineering vehicle (11).

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