Automatic inertia brake device for tractor and towed vehicle

Abstract

The utility model relates to the technical field of mechanical equipment, and discloses an automatic inertia brake device for a tractor and a towed vehicle, which comprises a trailer frame, one end of the trailer frame is fixedly connected with a protective shell, the inside of the protective shell is fixedly connected with a circular sleeve, the outer wall of the circular sleeve is rotatably connected with a Z-shaped pull tab, and the Z-shaped pull tab is fixedly connected with the protective shell. A traction rod is slidably connected to the interior of the protective shell, one end of the traction rod is attached to the Z-shaped pull piece, the outer wall of the traction rod is sleeved with a pressure spring, and one end of the pressure spring is fixedly connected to the interior of the protective shell. According to the utility model, the problems that the braking distance of the front vehicle is increased, some unnecessary accidents are caused and great potential safety hazards exist due to overlarge impact force of the rear vehicle to the front vehicle caused by difficulty in braking at the same time are solved, and the purposes of ensuring the driving safety of the front tractor and the rear towed vehicle are achieved; and the defect that no braking measure exists in the running process of the dragged vehicle is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to an automatic inertia braking device for a tractor and a towed vehicle. Background Art

[0002] A tractor is a vehicle specially designed to tow other vehicles or heavy loads, and is commonly used in transportation, construction, and agriculture. A tractor usually has a powerful engine and a sturdy frame, which can provide sufficient power and traction to drag heavy objects. In order to improve safety and operational efficiency, an automatic inertia brake device is often required between the tractor and the towed vehicle. This device can automatically activate the brake system of the towed vehicle when the tractor slows down or brakes, preventing the towed vehicle from continuing to move forward due to inertia, causing a collision or loss of control, thereby ensuring the synchronous deceleration and safe parking of the two vehicles during the towing process. This technology not only improves the safety of operation, but also reduces the burden on the driver and improves the smoothness and reliability of the transportation process.

[0003] Traditional tractors are mainly used in agriculture, construction and transportation, and their powerful towing capabilities are utilized. These vehicles are usually equipped with high-power engines and sturdy frames to provide sufficient power and durability. Traditional tractors mainly connect loads or other vehicles together through mechanical connections, such as towing hooks or towing bars. When operating, the driver needs to be proficient in controlling the direction and speed of the tractor to ensure the stability and safety of the towing process. Since traditional tractors lack modern automatic inertia braking devices, the driver must pay special attention to braking or decelerating, and gradually slow down to avoid the danger of inertia of the towed object, so as to ensure the smooth progress of the entire towing process.

[0004] Traditional tractors will inevitably encounter emergency situations when driving. When braking, the rear towed vehicle has no simultaneous braking function. The impact force of the rear vehicle on the front vehicle is too large, which increases the braking distance of the front vehicle, causing some unnecessary accidents and posing a great safety hazard. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an automatic inertia braking device for a tractor and a towed vehicle, aiming to improve the problem that it is difficult for the front vehicle and the rear vehicle of a traditional tractor to brake at the same time, resulting in excessive impact force of the rear vehicle on the front vehicle, increasing the braking distance of the front vehicle, causing some unnecessary accidents, and posing great safety hazards.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic inertia braking device for a tractor and a towed vehicle, comprising a trailer frame, one end of the trailer frame is fixedly connected to a protective shell, the interior of the protective shell is fixedly connected to a circular sleeve, the outer wall of the circular sleeve is rotatably connected to a Z-shaped pull tab, the interior of the protective shell is slidably connected to a traction rod, one end of the traction rod is in contact with the Z-shaped pull tab, the outer wall of the traction rod is sleeved with a pressure spring, one end of the pressure spring is fixedly connected to the interior of the protective shell, the other end of the pressure spring is fixedly connected to a limiting plate, the inner wall of the limiting plate is fixedly connected to the outer wall of the traction rod, and one end of the Z-shaped pull tab is provided with a brake assembly, and the brake assembly is used to automatically start braking when the Z-shaped pull tab rotates.

[0007] Furthermore, the brake assembly includes a second connector, one end of which is rotatably connected to one end of the Z-shaped pull tab, and the other end of the second connector is fixedly connected to a brake cable.

[0008] Furthermore, the outer wall of the second connecting member is rotatably connected to a rotating shaft, and the outer wall of the rotating shaft is fixedly connected to the outer wall of the trailer frame.

[0009] Furthermore, a connecting member 1 is rotatably connected to the outer wall of the rotating shaft, and the connecting member 1 is arranged on one side of the connecting member 2.

[0010] Furthermore, the first connector and the second connector are both arranged in the middle of the outer wall of the trailer frame, and a mounting hole is opened inside the trailer frame.

[0011] Furthermore, one end of the traction rod is fixedly connected with a traction ring, and the traction ring is arranged on one side of the protective shell.

[0012] Furthermore, the outer wall of the Z-shaped pull tab is rotatably connected to the interior of the protective shell, and the outer wall of the limiting piece is slidably connected to the interior of the protective shell.

[0013] Furthermore, a limiting rod is fixedly connected to the interior of the protective shell, and the limiting rod is arranged on one side of the Z-shaped pull tab.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, firstly, when the front vehicle brakes in an emergency, the traction ring, traction rod, pressure spring, Z-shaped pull piece, circular sleeve, brake cable, connector 2 and limit rod are used to brake the rear vehicle at the same time, which solves the problem that it is difficult to brake at the same time, resulting in excessive impact force of the rear vehicle on the front vehicle, increasing the braking distance of the front vehicle, causing some unnecessary accidents and posing great safety hazards. The driving safety of the front traction vehicle and the rear towed vehicle is ensured, and the disadvantage of no braking measures during the driving of the rear towed vehicle is effectively improved.

[0016] 2. In the utility model, first, when the Z-shaped pull piece pulls the brake cable to move, the rotating shaft will be driven to rotate through the connecting member 2, thereby driving the connecting member 1 to move synchronously, and then quickly respond to the brake connected to the connecting member 1, realizing rapid response braking, ensuring that the two vehicles brake at the same time as much as possible, reducing the possibility of loss of control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of an automatic inertia braking device for a tractor and a towed vehicle proposed by the utility model;

[0018] Figure 2 A schematic diagram of the structure of one side of a trailer frame of an automatic inertia brake device for a tractor and a towed vehicle proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of a protective shell of an automatic inertia brake device for a tractor and a towed vehicle proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the protective shell structure of an automatic inertia brake device for a tractor and a towed vehicle proposed by the utility model;

[0021] Figure 5 The utility model discloses a schematic diagram of a trailer frame structure of an automatic inertia braking device for a tractor and a towed vehicle.

[0022] Legend:

[0023] 1. Trailer frame; 2. Brake cable; 3. Round sleeve; 4. Z-shaped pull tab; 5. Towing rod; 6. Pressure spring; 7. Limiting plate; 8. Protective shell; 9. Towing ring; 10. Rotating shaft; 11. Connector 1; 12. Mounting hole; 13. Connector 2; 14. Limiting rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1 - Figure 3 , the utility model provides an embodiment: an automatic inertia brake device for a tractor and a towed vehicle, comprising a trailer frame 1, one end of the trailer frame 1 is fixedly connected with a protective shell 8, the interior of the protective shell 8 is fixedly connected with a circular sleeve 3, the outer wall of the circular sleeve 3 is rotatably connected with a Z-shaped pull tab 4, the interior of the protective shell 8 is slidably connected with a traction rod 5, one end of the traction rod 5 is fitted with the Z-shaped pull tab 4, the outer wall of the traction rod 5 is sleeved with a pressure spring 6, one end of the pressure spring 6 is fixedly connected to the interior of the protective shell 8, the other end of the pressure spring 6 is fixedly connected with a limiting plate 7, the inner wall of the limiting plate 7 is fixedly connected to the outer wall of the traction rod 5, one end of the Z-shaped pull tab 4 is provided with a brake brake assembly, the brake brake assembly is used to automatically start braking when the Z-shaped pull tab 4 rotates, the brake brake assembly comprises a second connector 13, one end of the second connector 13 is rotatably connected to one end of the Z-shaped pull tab 4, and the other end of the second connector 13 is fixedly connected with a brake cable 2;

[0026] Specifically, when the front vehicle brakes, the rear tractor vehicle will be impacted, thereby driving the traction rod 5 to slide inside the protective shell 8 through the traction ring 9, and the movement of the traction rod 5 will drive the limit plate 7 to move, so that the pressure spring 6 is stretched between the limit plate 7 and the protective shell 8. At the same time, the movement of the traction rod 5 will also push one end of the Z-shaped pull tab 4 to move, so that the Z-shaped pull tab 4 rotates with the circular sleeve 3 as the center of the circle, thereby driving the connecting piece 2 13 and the brake cable 2 to move through the other end of the Z-shaped pull tab 4 to achieve braking, and then start the brake of the rear tractor vehicle. After braking, the rebound of the pressure spring 6 can achieve buffering and drive the traction rod 5 back to the initial state. In this process, the limit rod 14 can also limit the excessive rotation of the Z-shaped pull tab 4 to prevent damage to the brake when the Z-shaped pull tab 4 rotates excessively.

[0027] Reference Figure 1 , Figure 4 and Figure 5The outer wall of the second connecting member 13 is rotatably connected with a rotating shaft 10, the outer wall of the rotating shaft 10 is fixedly connected to the outer wall of the trailer frame 1, the outer wall of the rotating shaft 10 is rotatably connected with a connecting member 11, the connecting member 11 is arranged on one side of the second connecting member 13, the connecting member 11 and the connecting member 2 13 are both arranged in the middle of the outer wall of the trailer frame 1, the interior of the trailer frame 1 is provided with a mounting hole 12, one end of the traction rod 5 is fixedly connected with a traction ring 9, the traction ring 9 is arranged on one side of the protective shell 8, the outer wall of the Z-shaped pull piece 4 is rotatably connected to the interior of the protective shell 8, the outer wall of the limiting piece 7 is slidably connected to the interior of the protective shell 8, the interior of the protective shell 8 is fixedly connected to a limiting rod 14, and the limiting rod 14 is arranged on one side of the Z-shaped pull piece 4;

[0028] Specifically, when the Z-shaped pull tab 4 pulls the brake cable 2 to move, one end of the brake cable 2 will drive the second connector 13 to move. The movement of the second connector 13 will further pull the rotating shaft 10 to rotate. After the rotating shaft 10 rotates, it drives the one side connector 11 connected to it to rotate around the rotating shaft 10 as the center. This series of actions are linked to achieve the effect of rapid braking.

[0029] Working principle: When the automatic inertia brake device of the vehicle is needed, the impact force generated by the towed vehicle behind squeezes or hits the towing rod 5 of the inertia brake device while the towing vehicle in front brakes. The towing rod 5 shrinks inwards and hits the Z-shaped pull tab 4. The Z-shaped pull tab 4 tilts upward and pulls, so that the brake cable 2 tightens the brake caliper or the brake disc of the drum brake, thereby playing the role of automatic braking, greatly improving the driving safety during towing.

[0030] In addition, when the Z-shaped pull tab 4 pulls the brake cable 2 to move, one end of the brake cable 2 drives the connecting piece 2 13 to move, and then the movement of the connecting piece 2 13 pulls the rotating shaft 10 to rotate, and then the rotation of the rotating shaft 10 drives the connecting piece 1 11 on one side to rotate with the rotating shaft 10 as the center, thereby achieving rapid braking.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic inertia braking device for a tractor and a towed vehicle, comprising a trailer frame (1), characterized in that: One end of the trailer frame (1) is fixedly connected to a protective shell (8), the interior of the protective shell (8) is fixedly connected to a circular sleeve (3), the outer wall of the circular sleeve (3) is rotatably connected to a Z-shaped pull tab (4), the interior of the protective shell (8) is slidably connected to a traction rod (5), one end of the traction rod (5) is in contact with the Z-shaped pull tab (4), the outer wall of the traction rod (5) is sleeved with a pressure spring (6), one end of the pressure spring (6) is fixedly connected to the interior of the protective shell (8), the other end of the pressure spring (6) is fixedly connected to a limit plate (7), the inner wall of the limit plate (7) is fixedly connected to the outer wall of the traction rod (5), and one end of the Z-shaped pull tab (4) is provided with a brake assembly, which is used to automatically start braking when the Z-shaped pull tab (4) rotates.

2. The automatic inertia braking device for a tractor and a towed vehicle according to claim 1, characterized in that: The brake assembly comprises a second connecting member (13), one end of which is rotatably connected to one end of the Z-shaped pull tab (4), and the other end of which is fixedly connected to a brake cable (2).

3. The automatic inertia braking device for a tractor and a towed vehicle according to claim 2, characterized in that: The outer wall of the second connecting member (13) is rotatably connected to a rotating shaft (10), and the outer wall of the rotating shaft (10) is fixedly connected to the outer wall of the trailer frame (1).

4. The automatic inertia braking device for a tractor and a towed vehicle according to claim 3, characterized in that: The outer wall of the rotating shaft (10) is rotatably connected to a connecting piece 1 (11), and the connecting piece 1 (11) is arranged on one side of the connecting piece 2 (13).

5. The automatic inertia braking device for a tractor and a towed vehicle according to claim 4, characterized in that: The first connecting member (11) and the second connecting member (13) are both arranged in the middle of the outer wall of the trailer frame (1), and a mounting hole (12) is provided inside the trailer frame (1).

6. The automatic inertia braking device for a tractor and a towed vehicle according to claim 1, characterized in that: One end of the traction rod (5) is fixedly connected to a traction ring (9), and the traction ring (9) is arranged on one side of the protective shell (8).

7. The automatic inertia braking device for a tractor and a towed vehicle according to claim 1, characterized in that: The outer wall of the Z-shaped pull tab (4) is rotatably connected to the interior of the protective shell (8), and the outer wall of the limiting sheet (7) is slidably connected to the interior of the protective shell (8).

8. The automatic inertia braking device for a tractor and a towed vehicle according to claim 1, characterized in that: A limiting rod (14) is fixedly connected to the interior of the protective shell (8), and the limiting rod (14) is arranged on one side of the Z-shaped pull tab (4).

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