Pull-type walking chassis

Abstract

The utility model relates to a pull-type walking chassis which comprises a frame, front wheels are arranged on the front portion of the bottom end of the frame, and rear wheels are arranged on the rear portion of the bottom end of the frame. The supporting arm is connected to the front end of the frame, and the supporting arm is provided with a driving position and a parking position; the brake assembly is arranged on the frame and used for fixing the front wheel and the rear wheel; and the steering assembly is arranged on the frame, is connected to the front wheels and is used for pulling the frame to turn. By the adoption of the structure, the pull-type walking chassis is convenient to move and small in occupied space.

Description

Technical Field

[0001] The utility model relates to the technical field of trailer chassis, in particular to a towing type walking chassis. Background Art

[0002] At present, most vehicle-mounted equipment uses a second-class automobile chassis as a carrying device to carry the equipment to the designated work site. The second-class automobile chassis is costly and bulky, and the frame needs to be customized. However, some equipment needs to be moved a short distance and does not need to be transported over long distances, so the second-class automobile chassis is not suitable and economical for these equipment, and the second-class automobile chassis is inconvenient to place.

[0003] Therefore, there is an urgent need to provide a towing type walking chassis to solve the above problems. Utility Model Content

[0004] The utility model aims to overcome the shortcomings and defects of the prior art and provide a towing type walking chassis, which is easy to move and occupies a small space.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A towable walking chassis, characterized by comprising:

[0007] A frame, wherein a front wheel is provided at the front of the bottom end of the frame, and a rear wheel is provided at the rear of the bottom end of the frame;

[0008] A supporting arm connected to the front end of the frame, the supporting arm having a driving position and a parking position;

[0009] A brake assembly, disposed on the frame, for fixing the front wheel and the rear wheel;

[0010] A steering assembly is arranged on the frame and connected to the front wheel to pull the frame to turn.

[0011] Optionally, the support arm is rotatably connected to the frame, a locking hook is provided at the upper end of the support arm, and a supporting ring is provided at the front end of the frame; when the support arm is in the parking position, the locking hook is connected to the supporting ring.

[0012] Optionally, the brake assembly includes a front wheel brake assembly and a rear wheel brake assembly, the front wheel brake assembly is used to fix the front wheel, and the rear wheel brake assembly is used to fix the rear wheel.

[0013] Optionally, the front wheel brake assembly includes a parking brake and a brake cross bar, the parking brake is connected to the wheel axle of the front wheel, and the brake cross bar is movably abutted against the front wheel; the rear wheel brake assembly includes a brake handle, a pull rope and a disc brake, the brake handle is connected to the frame, and the disc brake is connected to the rear wheel; one end of the pull rope is connected to the brake handle, and the other end is connected to the disc brake.

[0014] Optionally, the steering assembly includes a support arm rotating shaft, a steering shaft and a slewing bearing, the support arm rotating shaft is arranged between the support arm and the parking brake, the steering shaft is connected to the support arm, the slewing bearing is connected to the steering shaft, and the frame and the slewing bearing are connected by bolts.

[0015] Optionally, the towed walking chassis further includes a steering limit assembly, wherein the steering limit assembly is connected to the steering shaft to limit a rotation angle of the steering shaft.

[0016] Optionally, the steering limit assembly includes a limit seat and a steering limit shaft, the limit seat is provided with two groups, the two limit seats are symmetrically arranged at the upper end of the frame, the steering limit shaft is connected to the steering shaft, and the steering limit shaft is located between the two limit seats.

[0017] Optionally, a shock-absorbing pad is provided at the lower end of the support arm.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] In the utility model, the towed walking chassis includes a frame, a front wheel is provided at the front bottom of the frame, a rear wheel is provided at the rear bottom of the frame, and a support arm is connected to the front end of the frame; the support arm has a driving position and a parking position, that is, when the support arm is placed horizontally, the support arm is in the driving position, and when the support arm is placed vertically, it is in the parking position, which can reduce the occupied space; the brake assembly is used to fix the wheels, and when the support arm is in the parking position, the brake assembly fixes the front wheel and the rear wheel to prevent the chassis from slipping; the steering assembly is connected to the front wheel to tow the frame to turn. Through the arrangement of the above components, the towed walking chassis is easy to move and occupies a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model when the middle support arm is in the driving position.

[0021] Figure 2 It is a structural schematic diagram of the utility model when the middle support arm is in the parking position.

[0022] Figure 3 It is a top view of the utility model.

[0023] Figure 4 for Figure 1 Schematic diagram of the structure along the AA direction.

[0024] Figure 5 for Figure 1 A local enlarged view along the BB direction.

[0025] The above drawings include the following reference numerals:

[0026] 1. Frame, 11. Front wheel, 12. Rear wheel, 2. Support arm, 21. Lock hook, 31. Parking brake, 32. Brake cross bar, 33. Brake handle, 34. Pull rope, 35. Disc brake, 41. Support arm shaft, 42. Steering shaft, 43. Swivel bearing, 51. Limit seat, 52. Steering limit shaft, 6. Shock absorber pad. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] The technical solution of the utility model provides a towing walking chassis.

[0031] Reference Figures 1 to 5 , in this embodiment, includes:

[0032] A frame 1, wherein a front wheel 11 is provided at the front bottom of the frame 1, and a rear wheel 12 is provided at the rear bottom of the frame 1;

[0033] A support arm 2 is connected to the front end of the frame 1, and the support arm 2 has a driving position and a parking position;

[0034] A brake assembly, provided on the frame 1, for fixing the front wheel 11 and the rear wheel 12;

[0035] A steering assembly is disposed on the vehicle frame 1 , and the steering assembly is connected to the front wheel 11 to pull the vehicle frame 1 to turn.

[0036] Optionally, in this embodiment, the towed walking chassis includes a frame 1, a front wheel 11 is provided at the front end of the bottom of the frame 1, a rear wheel 12 is provided at the rear end of the bottom of the frame 1, and a support arm 2 is connected to the front end of the frame 1. By setting the front wheel 11 and the rear wheel 12, the movement of the frame 1 can be achieved by dragging the support arm 2. A collar is provided at the front end of the support arm 2, and the collar is used to connect with the pin shaft of the tractor, so that the chassis can be towed by the tractor. The support arm 2 has a driving position and a parking position, that is, when the support arm 2 is placed horizontally, the support arm 2 can be moved. The support arm 2 is in the driving position, and when the support arm 2 is placed vertically, it is in the parking position. When the chassis is in the parking position, the support arm 2 is placed vertically to reduce the occupied space; the brake assembly is used to fix the wheels. When the support arm 2 is in the parking position, the brake assembly fixes the front wheel 11 and the rear wheel 12 to prevent the chassis from slipping; when the support arm 2 is placed horizontally, the brake assembly disconnects the fixation of the wheels, so that the chassis can move; the steering assembly is connected to the front wheel 11 to tow the frame 1 to turn. Through the arrangement of the above components, the towing walking chassis is easy to move and occupies a small space.

[0037] In this embodiment, the support arm 2 is rotatably connected to the frame 1, and a locking hook 21 is provided at the upper end of the support arm 2, and a supporting ring is provided at the front end of the parking brake 31. When the support arm 2 is in the parking position, the support arm 2 is placed vertically, that is, the supporting ring covers the locking hook 21 on the support arm 2, so that the support arm 2 can be fixed and kept vertically placed; when the chassis needs to be used, the locking hook 21 is removed from the supporting ring, the support arm 2 is placed in a horizontal position, and the brake handle 33 is disconnected so that the chassis can be moved.

[0038] In this embodiment, the brake assembly includes a front wheel 11 brake assembly and a rear wheel 12 brake assembly; the front wheel 11 brake assembly is used to fix the front wheel 11, and includes a parking brake 31 and a brake cross bar 32. When the support arm 2 is in the parking position, the parking brake 31 pushes the brake cross bar 32 to abut against the front wheel 11 to prevent the front wheel 11 from sliding. When the support arm 2 is in the driving position, the parking brake 31 pulls the brake cross bar 32 away from the front wheel 11. The brake assembly of the rear wheel 12 includes a brake handle 33, a pull rope 34 and a disc brake 35. The brake handle 33 is connected to the frame 1, the disc brake 35 is connected to the rear wheel 12, and the pull rope 34 is connected between the brake handle 33 and the disc brake 35. When the chassis is moving, the support arm 2 is placed horizontally, the brake handle 33 is pressed, and the pull rope 34 is pulled. The disc brake 35 releases the fixation of the rear wheel 12 under the pull of the pull rope 34. After the front wheel 11 and the rear wheel 12 are both released, the chassis can be towed by the tractor. When parking, the support arm 2 is erected, the lock hook 21 of the support arm 2 hooks the support ring, the brake handle 33 is lifted up, and the disc brake 35 completes the fixation of the rear wheel 12 under the action of the pull rope 34, and the brake cross bar 32 fixes the front wheel 11 at the same time to complete the braking of the chassis. In other embodiments, only the front wheel 11 brake assembly or only the rear wheel 12 brake assembly can be set, which is not limited here. In other embodiments, the disc brake may also be replaced by a drum brake.

[0039] In this embodiment, the steering assembly includes a support arm rotating shaft 41, a steering shaft 42 and a slewing bearing 43, wherein the support arm rotating shaft 41 is arranged between the support arm 2 and the parking brake 31, the steering shaft 42 is connected to the parking brake 31, and the slewing bearing 43 is connected to the steering shaft 42. When towing and turning, the support arm 2 drives the steering shaft 42, the parking brake 31 and the slewing bearing 43 to rotate, that is, drives the front wheel 11 to rotate to achieve turning; further, in this embodiment, the towing walking chassis also includes a steering limit assembly, which is connected to the steering shaft 42 to limit the rotation angle of the steering shaft 42 to prevent the chassis from rotating too much and causing the chassis or the equipment on the chassis to tip over.

[0040] Furthermore, the steering limit assembly includes a limit seat 51 and a steering limit shaft 52, the limit seat 51 is provided with two groups, and the two groups of limit seats 51 are symmetrically arranged at the upper end of the frame 1, wherein the steering limit shaft 52 is connected to the steering shaft 42, and the steering limit shaft 52 is arranged between the two groups of limit seats 51, and the length of the steering limit shaft 52 should be greater than the distance between the two groups of limit seats 51, so that the steering limit shaft 52 will contact the two groups of limit seats 51 when rotating. Through the setting of the limit seat 51 and the steering limit shaft 52, the rotation angle of the front wheel 11 is limited to prevent the chassis or the equipment on the chassis from tipping over.

[0041] In this embodiment, a shock absorbing pad 6 is further provided at the lower end of the support arm 2, and the support arm 2 is prevented from being damaged by hard contact with the ground, which may cause damage to the support arm 2 or the ground. The shock absorbing pad 6 may be made of a material with buffering properties such as rubber or a polymer compound.

[0042] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A towable walking chassis, characterized in that: include: A frame, wherein a front wheel is provided at the front of the bottom end of the frame, and a rear wheel is provided at the rear of the bottom end of the frame; A supporting arm connected to the front end of the frame, the supporting arm having a driving position and a parking position; A brake assembly, disposed on the frame, for fixing the front wheel and the rear wheel; A steering assembly is arranged on the frame and connected to the front wheel to pull the frame to turn.

2. A towable walking chassis according to claim 1, characterized in that: The support arm is rotatably connected to the frame, a locking hook is provided at the upper end of the support arm, and a supporting ring is provided at the front end of the frame; when the support arm is in the parking position, the locking hook is connected to the supporting ring.

3. A towable walking chassis according to claim 1, characterized in that: The brake assembly comprises a front wheel brake assembly and a rear wheel brake assembly, wherein the front wheel brake assembly is used to fix the front wheel, and the rear wheel brake assembly is used to fix the rear wheel.

4. A towable walking chassis according to claim 3, characterized in that: The front wheel brake assembly includes a parking brake and a brake cross bar, wherein the parking brake is connected to the wheel axle of the front wheel, and the brake cross bar is movably abutted against the front wheel; the rear wheel brake assembly includes a brake handle, a pull rope and a disc brake, wherein the brake handle is connected to the frame, and the disc brake is connected to the rear wheel; one end of the pull rope is connected to the brake handle, and the other end is connected to the disc brake.

5. A towable walking chassis according to claim 4, characterized in that: The steering assembly includes a support arm rotating shaft, a steering shaft and a slewing bearing. The support arm rotating shaft is arranged between the support arm and the parking brake, the steering shaft is connected to the support arm, the slewing bearing is connected to the steering shaft, and the frame and the slewing bearing are connected by bolts.

6. A towable walking chassis according to claim 5, characterized in that: The towing walking chassis further comprises a steering limit assembly, wherein the steering limit assembly is connected to the steering shaft to limit the rotation angle of the steering shaft.

7. A towable walking chassis according to claim 6, characterized in that: The steering limit assembly includes a limit seat and a steering limit shaft. The limit seat is provided with two groups. The two limit seats are symmetrically arranged at the upper end of the frame. The steering limit shaft is connected to the steering shaft, and the steering limit shaft is located between the two limit seats.

8. The towable walking chassis according to claim 1, characterized in that: A shock-absorbing pad is arranged at the lower end of the supporting arm.

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