Brake device for trailer

Abstract

The utility model provides a braking device for a trailer, and belongs to the technical field of logistics. Comprising a trailer body, a mounting frame is arranged at the bottom of the trailer body, a traction rod is hinged to the front end of the mounting frame, a cross rod is arranged on the mounting frame in the axial direction of wheels, brake pads used for abutting against the outer walls of the wheels are arranged at the two ends of the cross rod, and elastic pieces used for driving the cross rod to horizontally move and making the brake pads away from the wheels are arranged on the mounting frame. The traction rod is provided with a driving assembly used for driving the transverse rod to move horizontally and making the brake pad make friction contact with the outer wall of the wheel. And during unloading, a worker does not need to manually pull the trailer for braking. The device has the effects of saving manpower and reducing labor intensity.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics, in particular to a braking device for a trailer. Background Art

[0002] In the logistics industry, trailers are a commonly used type of transportation equipment. The goods are loaded onto trailers and then pulled to transport them to unloading points for unloading.

[0003] The patent with announcement number CN219007853U discloses a trailer, including a frame, which includes a front wall, a rear wall, a frame composed of two symmetrical side walls, a bottom frame at the bottom of the frame, and four rollers respectively arranged on both sides of the front wall and the rear wall. The front wall is the same as the rear wall, including two symmetrical telescopic vertical pipes and a folding assembly. The upper and lower ends of the telescopic vertical pipe are respectively provided with an upper fixed seat and a lower fixed seat, and a sliding seat is provided on the sliding sleeve of the telescopic vertical pipe. The upper and lower ends of the left or right side of the folding assembly are riveted to the upper fixed seat and the sliding seat respectively; the side wall includes two hinged X-shaped folding parts, the X-shaped folding parts include two long tubes riveted in the center, and the upper and lower ends of the front side or the rear side of the side wall are riveted to the upper fixed seat and the sliding seat respectively; the bottom frame includes a center seat and four bottom tubes symmetrically arranged at the four corners of the center seat, one end of the four bottom tubes is riveted to one end of the center seat respectively, and the other end is riveted to the lower fixed seat.

[0004] When the trailer is used for unloading on a slope, at least one operator needs to manually pull the trailer to prevent it from rolling along the slope, and then other operators carry out cargo handling, which requires a lot of manpower and has a high labor intensity. Utility Model Content

[0005] In view of the above problems, the utility model provides a braking device for a trailer.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0007] A braking device for a trailer is provided, comprising a trailer body, a mounting frame is provided at the bottom of the trailer body, a traction rod is hinged at the front end of the mounting frame, a cross bar is provided on the mounting frame along the axial direction of the wheel, brake pads for abutting against the outer wall of the wheel are provided at both ends of the cross bar, an elastic member for driving the cross bar to translate and keep the brake pad away from the wheel is provided on the mounting frame, and a driving assembly for driving the cross bar to translate and make the brake pad contact with the outer wall of the wheel by friction is provided on the traction rod.

[0008] Furthermore, the elastic member includes a spring, a mounting frame is provided on the mounting frame, a sliding column is horizontally provided in the mounting frame along the trailer transportation direction, a first through hole with a size matching the outer diameter of the sliding column is opened on the cross bar, the sliding column is slidably inserted into the first through hole, the spring is sleeved on the sliding column, and both ends of the spring are respectively abutted against the cross bar and the mounting frame.

[0009] Furthermore, the wheels include two front wheels and two rear wheels, the traction rod is vertically rotatably connected to one end of the mounting frame close to the front wheel, the cross bar is arranged between the front wheel and the rear wheel, and the brake pad is arranged on one side of the cross bar close to the rear wheel.

[0010] Furthermore, the driving assembly includes a connecting frame, a pulling rod and a first rotating frame. The connecting frame is vertically rotatably arranged on the mounting frame. One end of the connecting frame is movably abutted against a side of the cross bar away from the brake pad. The other end of the connecting frame is hinged to one end of the pulling rod. The other end of the pulling rod is hinged to the first rotating frame. The first rotating frame is vertically rotatably arranged at one end of the bottom of the trailer body close to the front wheel. A lifting cylinder is vertically slidably arranged on the mounting frame below the first rotating frame. The movable end of the first rotating frame is overlapped on the top of the lifting cylinder. A lifting assembly for driving the lifting cylinder to move is provided on the traction rod.

[0011] Furthermore, the lifting assembly includes a U-shaped frame, a connecting rod and two second rotating frames, one end of the two second rotating frames are hinged to the end of the U-shaped frame, the other ends of the two second rotating frames are respectively hinged to the lifting sleeve and the mounting frame, one end of the first connecting rod is fixedly connected to the U-shaped frame, and the other end of the connecting rod is hinged to the traction rod.

[0012] Furthermore, the connecting rod includes a mounting tube and a sliding rod slidably connected in the mounting tube, one end of the sliding rod is hinged on the traction rod, one end of the mounting tube is hinged to the second rotating frame, and a limiting member is built into the mounting tube for limiting the sliding of the sliding rod.

[0013] The beneficial effects of the utility model are as follows: the staff only needs to gently put down the towing rod so that the movable end of the towing rod can rotate to the bottom of the mounting frame under the action of its own gravity. During the rotation process, the driving component drives the cross bar to translate, which can compress the elastic part and make the brake pad abut against the outer wall of the wheel. Relying on the friction between the brake pad and the wheel, the wheel is restricted from continuing to roll, and then the trailer can be parked and unloaded; the staff pulls up the movable end of the towing rod and rotates the end to the top of the mounting frame. At this time, the driving component releases the cross bar, and the elastic part can drive the cross bar away from the wheel to avoid the brake pad from contacting the wheel, so that the trailer can be pulled to continue transportation, which has the effect of saving manpower and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a braking device for a trailer according to an embodiment of the present application.

[0015] Figure 2 This is a schematic structural diagram from another perspective of a braking device for a trailer according to an embodiment of the present application.

[0016] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A.

[0017] Figure 4 for Figure 2 A partial enlarged schematic diagram of part B.

[0018] Among them, 1. trailer body; 2. mounting frame; 21. mounting frame; 22. sliding column; 3. traction rod; 4. cross bar; 41. brake pad; 5. elastic member; 51. spring; 6. driving assembly; 61. connecting frame; 62. pulling rod; 63. first rotating frame; 64. lifting cylinder; 7. lifting assembly; 71. U-shaped frame; 72. connecting rod; 721. mounting cylinder; 722. sliding rod; 73. second rotating frame. DETAILED DESCRIPTION

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] The present application embodiment discloses a braking device for a trailer, referring to Figure 1 and Figure 2 , comprising a trailer body 1, a mounting frame 2 is welded at the bottom of the trailer body 1, and a traction rod 3 is connected to the front end of the mounting frame 2 through a rotating shaft for vertical rotation. A cross bar 4 is arranged on the mounting frame 2 along the axial direction of the wheel, and brake pads 41 for abutting against the outer wall of the wheel are welded at both ends of the cross bar 4. An elastic member 5 for driving the cross bar 4 to translate and keep the brake pad 41 away from the wheel is installed on the mounting frame 2, and a driving component 6 for driving the cross bar 4 to translate and make the brake pad 41 frictionally contact with the outer wall of the wheel is installed on the traction rod 3.

[0021] In the embodiment of the present application, the traction rod 3 is connected to the cross bar 4 through the driving assembly 6. When the trailer needs to stop and unload, the staff only needs to gently put down the traction rod 3 so that the movable end of the traction rod 3 rotates to the bottom of the mounting frame 2 under its own gravity. During the rotation process, the driving assembly 6 drives the cross bar 4 to translate, which can compress the elastic member 5 and make the brake pad 41 abut against the outer wall of the wheel. The friction between the brake pad 41 and the wheel limits the wheel from continuing to roll. When the trailer needs to continue to transport, the staff pulls up the movable end of the traction rod 3 and rotates the end to the top of the mounting frame 2. At this time, the driving assembly 6 releases the cross bar 4, and the elastic member 5 can drive the cross bar 4 away from the wheel to prevent the brake pad 41 from contacting the wheel. When unloading, there is no need for the staff to manually pull the trailer for braking, which has the effect of saving manpower and reducing labor intensity.

[0022] Specifically, the elastic member 5 includes a spring 51, a mounting frame 21 is welded on the mounting frame 2, and a sliding column 22 is horizontally welded in the mounting frame 21 along the trailer transportation direction. A first through hole whose size matches the outer diameter of the sliding column 22 is opened on the cross bar 4, and the sliding column 22 is slidably inserted into the first through hole. The spring 51 is sleeved on the sliding column 22, and the two ends of the spring 51 are respectively abutted against the cross bar 4 and the mounting frame 21. Since the mounting frame 21 is welded on the mounting frame 2, the spring 51 can limit the cross bar 4 from sliding close to the outer wall of the wheel through its own elastic force. Ensure that the brake pad 41 does not contact the outer wall of the wheel during trailer transportation.

[0023] Specifically, the wheels include two front wheels and two rear wheels, and the traction rod 3 is vertically rotatably arranged on the mounting frame 2 at one end close to the front wheel. The cross bar 4 is installed between the front wheel and the rear wheel, and the brake pad 41 is welded to the side of the cross bar 4 close to the rear wheel. When the movable end of the traction rod 3 rotates to the bottom of the mounting frame 2, the driving assembly 6 can drive the cross bar 4 to move axially along the sliding column 22 and close to the rear wheel of the trailer. During the sliding process, the spring 51 is compressed, and the brake pad 41 abuts against the outer wall of the rear wheel, and the rear wheel is restricted from continuing to roll through friction resistance, thereby achieving braking of the entire trailer.

[0024] Reference Figure 3 and Figure 4 The driving assembly 6 includes a connecting frame 61, a pull rod 62 and a first rotating frame 63. The connecting frame 61 is vertically rotatably arranged on the mounting frame 2, one end of the connecting frame 61 is movably abutted against a side of the cross bar 4 away from the brake pad 41, the other end of the connecting frame 61 is hinged to one end of the pull rod 62, and the other end of the pull rod 62 is hinged to the first rotating frame 63. The first rotating frame 63 is vertically rotatably arranged at one end of the bottom of the trailer body 1 near the front wheel. A lifting cylinder 64 is vertically slidably installed on the mounting frame 2 below the first rotating frame 63, the movable end of the first rotating frame 63 is overlapped on the top of the lifting cylinder 64, and a lifting assembly 7 for driving the lifting cylinder 64 to move is installed on the traction rod 3.

[0025] In the embodiment of the present application, the lifting cylinder 64 can be driven to slide vertically by the lifting assembly 7. When the lifting cylinder 64 rises vertically, the movable end of the first rotating frame 63 is pushed by the lifting cylinder 64 and rotates around its own rotation axis, so that the other end of the first rotating frame 63 pulls the pull rod 62 to move away from the rear wheel. During the movement, the pull rod 62 pulls the end of the connecting frame 61 away from the cross bar 4 to rotate around its own rotation axis, so that the movable end of the connecting frame 61 can push the cross bar 4 to slide along the sliding column 22 and approach the rear wheel until the brake pad 41 abuts against the outer wall of the rear wheel, thereby playing a braking role. When the lifting cylinder 64 descends vertically, the movable end of the first rotating frame 63 is released. At this time, the elastic force of the spring 51 is sufficient to drive the cross bar 4 away from the rear wheel, and under the transmission action, the connecting frame 61, the pull rod 62 and the first rotating frame 63 can move to the original position.

[0026] Specifically, the lifting assembly 7 includes a U-shaped frame 71, a connecting rod 72 and two second rotating frames 73. One end of each of the two second rotating frames 73 is vertically rotatably connected to the end of the U-shaped frame 71 through a rotating shaft, and the other ends of the two second rotating frames 73 are vertically rotatably connected to the lifting sleeve and the mounting frame 2 through another rotating shaft. One end of the first connecting rod is welded and fixed to the U-shaped frame 71, and the other end of the connecting rod 72 is vertically rotatably connected to the traction rod 3 through another rotating shaft.

[0027] In the embodiment of the present application, the connecting rod 72 can be driven to extend and retract by vertically rotating the traction rod 3. When the movable end of the traction rod 3 rotates to the bottom of the mounting frame 2, the connecting rod 72 extends to the maximum length and pulls the rotating shaft on the U-shaped frame 71 close to the lifting cylinder 64, so that the connection parts of the two second rotating frames 73 are also close to the lifting cylinder 64, thereby driving the lifting cylinder 64 to rise vertically; when the movable end of the traction rod 3 rotates to the top of the mounting frame 2, the first connecting rod shrinks to the minimum length and pushes the rotating shaft on the U-shaped frame 71 away from the lifting cylinder 64, so that the connection parts of the two second rotating frames 73 are also away from the lifting cylinder 64, thereby driving the lifting cylinder 64 to move vertically downward.

[0028] Specifically, the connecting rod 72 includes a mounting tube 721 and a sliding rod 722 slidably connected in the mounting tube 721. One end of the sliding rod 722 is vertically rotatably connected to the traction rod 3, one end of the mounting tube 721 is rotatably connected to the second rotating frame 73, and a limiting member for limiting the sliding movement of the sliding rod 722 is built into the mounting tube 721. The telescopic function of the connecting rod 72 can be achieved by sliding the first sliding rod 722 in the mounting tube 721.

[0029] The implementation principle of a trailer brake device in the embodiment of the present application is as follows: when the trailer needs to stop and unload, the staff only needs to gently put down the traction rod 3, so that the movable end of the traction rod 3 rotates to the bottom of the mounting frame 2 under its own gravity. During the rotation process, the driving assembly 6 drives the cross bar 4 to translate, which can compress the elastic member 5 and make the brake pad 41 abut against the outer wall of the wheel. The friction between the brake pad 41 and the wheel is relied on to limit the wheel from continuing to roll; when the trailer needs to continue to transport, the staff pulls up the movable end of the traction rod 3 and rotates the end to the top of the mounting frame 2. At this time, the driving assembly 6 releases the cross bar 4, and the elastic member 5 can drive the cross bar 4 away from the wheel to prevent the brake pad 41 from contacting the wheel. When unloading, there is no need for the staff to manually pull the trailer for braking, which has the effect of saving manpower and reducing labor intensity.

[0030] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A braking device for a trailer, characterized in that: The invention comprises a trailer body (1), a mounting frame (2) is provided at the bottom of the trailer body (1), a traction rod (3) is hingedly connected to the front end of the mounting frame (2), a cross bar (4) is provided on the mounting frame (2) along the axial direction of the wheel, brake pads (41) are provided at both ends of the cross bar (4) for abutting against the outer wall of the wheel, an elastic member (5) is provided on the mounting frame (2) for driving the cross bar (4) to translate and move the brake pad (41) away from the wheel, and a driving assembly (6) is provided on the traction rod (3) for driving the cross bar (4) to translate and make the brake pad (41) in frictional contact with the outer wall of the wheel.

2. A trailer braking device according to claim 1, characterized in that: The elastic member (5) comprises a spring (51), a mounting frame (21) is provided on the mounting frame (2), a sliding column (22) is horizontally provided in the mounting frame (21) along the transport direction of the trailer, a first through hole with a size matching the outer diameter of the sliding column (22) is opened on the cross bar (4), the sliding column (22) is slidably inserted into the first through hole, the spring (51) is sleeved on the sliding column (22), and two ends of the spring (51) are respectively in contact with the cross bar (4) and the mounting frame (21).

3. A trailer braking device according to claim 1, characterized in that: The wheels include two front wheels and two rear wheels, the traction rod (3) is vertically rotatably connected to one end of the mounting frame (2) close to the front wheel, the cross bar (4) is arranged between the front wheel and the rear wheel, and the brake pad (41) is arranged on one side of the cross bar (4) close to the rear wheel.

4. A trailer braking device according to claim 3, characterized in that: The driving assembly (6) comprises a connecting frame (61), a pulling rod (62) and a first rotating frame (63); the connecting frame (61) is vertically rotatably arranged on the mounting frame (2); one end of the connecting frame (61) is movably abutted against a side of the cross bar (4) away from the brake pad (41); the other end of the connecting frame (61) is hinged to one end of the pulling rod (62); the other end of the pulling rod (62) is hinged to the first rotating frame (63); the first rotating frame (63) is vertically rotatably arranged at one end of the bottom of the trailer body (1) close to the front wheel; a lifting cylinder (64) is vertically slidably arranged on the mounting frame (2) below the first rotating frame (63); the movable end of the first rotating frame (63) is overlapped on the top of the lifting cylinder (64); and a lifting assembly (7) for driving the lifting cylinder (64) to move is provided on the traction rod (3).

5. A trailer braking device according to claim 4, characterized in that: The lifting assembly (7) comprises a U-shaped frame (71), a connecting rod (72) and two second rotating frames (73), one end of each of the two second rotating frames (73) is hinged to the end of the U-shaped frame (71), the other ends of the two second rotating frames (73) are respectively hinged to the lifting sleeve and the mounting frame (2), one end of the first connecting rod is fixedly connected to the U-shaped frame (71), and the other end of the connecting rod (72) is hinged to the traction rod (3).

6. A trailer braking device according to claim 5, characterized in that: The connecting rod (72) comprises a mounting tube (721) and a sliding rod (722) slidably connected in the mounting tube (721); one end of the sliding rod (722) is hinged on the traction rod (3); one end of the mounting tube (721) is hinged to the second rotating frame (73); and a limiting member for limiting the sliding rod (722) from sliding away is built into the mounting tube (721).

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