CN219728306U - Rear wheel steering and lifting control device of semitrailer - Google Patents

Abstract

The utility model relates to the field of rear wheel steering and lifting control of semitrailers, and discloses a rear wheel steering and lifting control device of a semitrailer. According to the utility model, the rear wheel rotates under the action of the transmission oil cylinder, so that the transmission efficiency and the transmission precision are improved, and meanwhile, the lifting table is arranged on the frame, so that the height is adjustable, and the passing rate and the loading and unloading efficiency of the semi-trailer are improved.

Description

Rear wheel steering and lifting control device of semitrailer

Technical Field

The utility model relates to the field of rear wheel steering and lifting control of semi-trailers, in particular to a rear wheel steering and lifting control device of a semi-trailer.

Background

Semitrailers are trailers with axles placed behind the center of gravity of the vehicle when the vehicle is evenly loaded and equipped with coupling means for transmitting horizontal and vertical forces to the tractor, a heavy transportation vehicle connected to the head of the semitrailer by means of towing pins, are very popular for transporting goods of various lengths, weights, widths, shapes.

Most of the rear wheels of the existing semitrailers cannot be turned, the trailer has no automatic lifting function, and even if the rear wheels are provided with a turning device, the structure is complex, the production is inconvenient, and the use requirements of people cannot be met, so that the design of the rear wheel turning and lifting control device of the semitrailer with a simple structure is very necessary.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a rear wheel steering and lifting control device of a semitrailer.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a rear wheel steering and lift controlling means of semitrailer, includes the engine gear pump, total oil pipe one end of engine gear pump fixed connection, total oil pipe other end fixed connection joint is in the control valve oil inlet, the control valve oil inlet fixed welding is inboard in the control valve body, steering control handle is installed in the control valve body outside, steering control handle controls the start-stop of steering oil delivery house steward, steering oil delivery house steward fixed connection is in steering oil delivery branch pipe, steering oil delivery pipe joint is in steering cylinder, steering cylinder embeds steering piston, steering piston end fixed connection goes up the sleeve, steering upper sleeve welds in steering connecting rod one end, steering connecting rod other end fixed connection is in left knuckle, left knuckle bolted connection wheel hub, wheel hub and stabilizer bar one end are articulated, the stabilizer bar other end is articulated with right knuckle, right knuckle and steering axle sliding connection, steering axle and axle fixed connection.

As a further description of the above technical solution:

the lifting control handle controls the flow of the lifting oil conveying main pipe, the lifting oil conveying main pipe is connected in series and connected with the lifting oil cylinder in a clamping mode, the lifting oil cylinder is internally provided with a lifting piston, the lifting piston penetrates through the frame, and the lifting table is arranged above the frame.

As a further description of the above technical solution:

the steering cylinder is hinged to the side face of the axle, the axle is fixedly connected with a steel plate, two ends of the steel plate are fixed to the frame, and eight groups of steel plates are arranged.

As a further description of the above technical solution:

the axle is fixedly provided with a brake cylinder, the cylinder is fixedly connected with a hub through a connecting rod, and the hub is connected with a water tank through a water pipe.

As a further description of the above technical solution:

the steering oil cylinder is clamped with a steering oil return pipe which is fixedly connected with the control valve body.

As a further description of the above technical solution:

the frame fixed mounting trailer base body, trailer base body lower part screw thread installation tray, two sets of about the tray altogether.

The utility model has the following beneficial effects:

1. according to the utility model, the steering pistons are embedded in the four groups of steering cylinders and are directly and fixedly connected with the steering knuckle through the steering upper sleeve, so that the transmission loss in the steering transmission process is reduced, the transmission efficiency is improved, the left steering knuckle and the right steering knuckle realize synchronous linkage through the stabilizer bar, the mechanical structure is simple, the stability of a steering system is effectively ensured, the length of the stabilizer bar can be adjusted, the steering inclination angle is convenient to adjust, the steering system is very practical, and in addition, the four groups of cylinders are connected in series with the steering oil conveying main pipe through the steering oil conveying branch pipe, so that the steering of four hubs is synchronous, and the steering deviation is effectively reduced.

2. According to the utility model, the four groups of lifting cylinders are fixedly arranged at the bottom of the frame, the lifting pistons jack up the lifting platform under the acting force of the lifting cylinders, the four groups of steering cylinders are symmetrically arranged left and right, the side tilting of the lifting platform in the lifting process can be prevented, the four groups of lifting cylinders are provided with autonomous lifting functions, the lowering functions can be realized only under the self gravity of the lifting platform, the cost can be reduced to a certain extent, the cost performance of the lifting device is improved, the lifting platform is arranged above the frame, the lifting platform and the frame are used as a lower supporting vehicle body together under the non-lifting working condition, and the carrying capacity of the trailer is improved to a certain extent.

Drawings

Fig. 1 is a front structural view of a rear wheel steering and lifting control device of a semitrailer provided by the utility model;

FIG. 2 is a reverse side structural diagram of a rear wheel steering and lifting control device of a semitrailer according to the present utility model;

FIG. 3 is a bottom view of a rear wheel steering and lifting control device for a semi-trailer according to the present utility model;

FIG. 4 is a cross-sectional view of a rear wheel steering and lifting control device for a semitrailer according to the present utility model;

fig. 5 is an enlarged view at a in fig. 3.

Legend description:

1. an engine gear pump; 2. a main oil inlet pipe; 3. an oil inlet of the control valve; 4. a control valve body; 5. a steering control handle; 6. turning to an oil delivery main pipe; 7. turning to oil transportation branch pipes; 8. a steering cylinder; 9. a steering piston; 10. turning the upper sleeve; 11. a steering connecting rod; 12. a left knuckle; 13. a hub; 14. a stabilizer bar; 15. a right knuckle; 16. a steering shaft; 17. an axle; 18. a steel plate; 19. a frame; 20. lifting the control handle; 21. lifting the oil transportation main pipe; 22. a lifting oil cylinder; 23. a lifting piston; 24. a water tank; 25. a trailer base body; 26. a steering oil return pipe; 27. a lifting table; 28. a tray; 29. and a brake cylinder.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, one embodiment provided by the present utility model is: the utility model provides a rear wheel steering and lift control device of semitrailer, including engine gear pump 1, engine gear pump 1 fixed connection total oil feed pipe 2 one end, total oil feed pipe 2 is as the hydraulic oil source of steering device and elevating gear, total oil feed pipe 2 other end fixed connection joint is in control valve oil inlet 3, control valve oil inlet 3 fixed welding is inboard in control valve body 4, four sets of steering cylinder 8 are in series connection with steering oil manifold 6 through steering oil branch pipe 7, make four wheel hub 13 turn to synchronous, effectively reduce steering bias, steering control handle 5 controls the start-stop of steering oil manifold 6, steering oil manifold 6 fixed connection is in steering oil branch pipe 7, steering oil branch pipe 7 joint is in steering cylinder 8, steering cylinder 8 embeds steering piston 9, steering piston 9 end fixed connection goes up sleeve 10, the synchronous linkage is realized through the stabilizer bar to left and right steering knuckle, mechanical structure is simple, moreover effectually guaranteed steering system's stability, go up sleeve 10 welds in steering connecting rod 11 one end, steering rod 11 other end fixed connection is in left knuckle 12, left knuckle 12 connects wheel hub 13, wheel hub 13 and right knuckle 14 and stabilizer bar 14 are connected with the pivot axle 16, steering shaft 16 is fixed with the pivot 16, the other end is connected with the pivot 16, the pivot 16 is fixed with the pivot axle 16.

The lifting control handle 20 is fixedly arranged on the control valve body 4, the lifting control handle 20 controls the flow of the lifting oil conveying main pipe 21, the lifting oil conveying main pipe 21 is connected with the lifting oil cylinder 22 in series, the lifting piston 23 is arranged in the lifting oil cylinder 22 in a clamped mode, the lifting piston 23 penetrates through the frame 19, the lifting table 27 is arranged above the frame 19, the steering oil cylinder 8 is hinged to the side face of the axle 17, the axle 17 is fixedly connected with the steel plate 18, two ends of the steel plate 18 are fixedly arranged on the frame 19, eight groups of the steel plate 18 are arranged, the axle 17 is fixedly provided with the brake cylinder 29, the air cylinder is fixedly connected with the hub 13 through a connecting rod, the hub 13 is connected with the water tank 24 through a water pipe, the steering oil cylinder 8 is connected with the steering oil return pipe 26 in a clamped mode, the steering oil return pipe 26 is fixedly connected with the control valve body 4, the frame 19 is fixedly provided with the trailer base body 25, the lower portion of the trailer base body 25 is provided with the tray 28 in a threaded mode, and the left and right of the tray 28 are provided with two groups.

Working principle: the engine gear pump 1 is arranged at the right front of the frame 19, the engine gear pump 1 is used for conveying high-pressure hydraulic oil through the main oil inlet pipe 2 to the control valve body 4, the steering control handle 5 is arranged on the control valve body 4, the steering control handle 5 is used for controlling the flow and the flow direction of the hydraulic oil in the steering oil conveying pipe and the steering oil return pipe 26 through up-down displacement, the steering oil conveying pipe is connected with the steering oil cylinder 8, the hydraulic oil pushes the steering piston 9 to move, the steering piston 9 moves and pushes the left steering knuckle 12 to rotate around the steering shaft 16, the left steering knuckle 12 is connected with the hub 13, the steering function of the rear wheel is realized, the lifting control handle 20 is arranged on the control valve body 4, the flow and the flow direction of the lifting oil conveying main pipe 21 are controlled through up-down displacement, the lifting oil cylinder 22 is controlled, the lifting piston 23 is controlled to lift and descend, and the lifting piston 23 pushes the lifting table 27 to lift and descend, and finally the lifting function of the semitrailer is realized.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. The utility model provides a rear wheel steering and lift controlling means of semitrailer, includes engine gear pump (1), its characterized in that: the novel steering device is characterized in that one end of a main oil inlet pipe (2) is fixedly connected to the engine gear pump (1), the other end of the main oil inlet pipe (2) is fixedly connected and clamped to a control valve oil inlet (3), the control valve oil inlet (3) is fixedly welded to the inner side of a control valve body (4), a steering control handle (5) is arranged on the outer side of the control valve body (4), the steering control handle (5) controls the start and stop of a steering oil conveying main pipe (6), the steering oil conveying main pipe (6) is fixedly connected to a steering oil conveying branch pipe (7), the steering oil conveying branch pipe (7) is clamped to a steering cylinder (8), a steering piston (9) is embedded in the steering cylinder (8), a steering upper sleeve (10) is fixedly connected to the steering piston (9), the steering upper sleeve (10) is welded to one end of a steering connecting rod (11), the other end of the steering connecting rod (11) is fixedly connected to a left steering knuckle (12), the left steering knuckle (12) is connected with a wheel hub (13) through a bolt, the wheel hub (13) is hinged to one end of a stabilizer bar (14), and the other end of the stabilizer bar (14) is hinged to a steering shaft (16), and the steering knuckle (16) is fixedly connected to a steering shaft (16).

2. The rear wheel steering and lifting control device of a semitrailer according to claim 1, wherein: the lifting control valve comprises a control valve body (4), a lifting control handle (20) is fixedly installed on the control valve body, the lifting control handle (20) controls the flow of a lifting oil conveying main pipe (21), the lifting oil conveying main pipe (21) is connected with a lifting oil cylinder (22) in series in a clamping mode, a lifting piston (23) is installed in the lifting oil cylinder (22) in an embedded mode, the lifting piston (23) penetrates through a frame (19), and a lifting table (27) is arranged above the frame (19).

3. The rear wheel steering and lifting control device of a semitrailer according to claim 1, wherein: the steering cylinder (8) is hinged to the side face of the axle (17), the axle (17) is fixedly connected with the steel plate (18), two ends of the steel plate (18) are fixed to the frame (19), and eight groups of steel plates (18) are arranged.

4. The rear wheel steering and lifting control device of a semitrailer according to claim 1, wherein: the axle (17) is fixedly provided with a brake cylinder (29), the cylinder is fixedly connected with a hub (13) through a connecting rod, and the hub (13) is connected with a water tank (24) through a water pipe.

5. The rear wheel steering and lifting control device of a semitrailer according to claim 1, wherein: the steering oil cylinder (8) is clamped with a steering oil return pipe (26), and the steering oil return pipe (26) is fixedly connected to the control valve body (4).

6. The rear wheel steering and lifting control device of a semitrailer according to claim 2, wherein: the frame (19) is fixedly provided with a trailer base body (25), a tray (28) is arranged on the lower portion of the trailer base body (25) in a threaded mode, and the tray (28) is divided into two groups.