A tow truck front wheel braking device

Abstract

This utility model relates to the field of braking device technology, specifically a tow truck front wheel braking device, including a frame, a tow bar, a brake assembly, and a locking member. The frame includes a body and wheels, with the wheels rotatably mounted on the body. The tow bar is hinged to the end of the body away from the wheels. The brake assembly is mounted on the body, and the tow bar can rotate along the hinged position to engage with and drive the brake assembly to brake the wheels. The locking member is mounted on the tow bar, and after the tow bar drives the brake assembly to brake the wheels, the locking member engages with the brake assembly. By using the locking member, when the tow bar rotates along the hinge to engage with the brake assembly, the braking state can be locked, thus achieving continuous braking. Furthermore, the locking member is hinged, and rotating along the hinged position allows for rapid release of the brake.

Description

Technical Field

[0001] This utility model relates to the field of braking device technology, specifically a tow truck front wheel braking device. Background Technology

[0002] Trailers are a common mode of transportation, widely used in logistics, construction, outdoor activities, and many other fields. Their safety has always been a key focus of the industry, especially the performance of the braking system. As the usage scenarios for trailers become increasingly complex, the demand for efficient, reliable, and flexible braking systems is also growing; however, existing trailer braking devices still have some shortcomings in practical use, particularly in continuous braking and emergency braking.

[0003] The existing utility model patent CN218536236U proposes a buffer brake device for trailers. When the buffer spring is compressed and subjected to force, it simultaneously triggers the brake spring. The brake spring is axially connected to the brake pin, and the compression squeezes the brake booster oil to flow to the hydraulic pump. The hydraulic pump receives power and grips the brake disc to brake.

[0004] As described in the above technical solution, the brake booster oil is compressed by the buffer spring and the brake spring to flow to the hydraulic pump, thereby achieving the purpose of braking. However, the above device cannot continuously brake the trailer after braking is completed. In some special situations, such as when the trailer is parked on a slope or when it needs to be parked for a long time, relying solely on this brief braking effect is far from sufficient and may cause the trailer to roll away, posing a safety hazard. In addition, the device cannot achieve a rapid response when it is necessary to release the brake, making it difficult to meet the flexible needs of actual use. Utility Model Content

[0005] In view of the technical problems in the prior art, the present invention provides a towing front wheel braking device, which aims to solve the problem that existing trailers cannot maintain braking and quickly release the brake after braking.

[0006] A tow truck front wheel braking device includes a frame, a drawbar, a brake assembly, and a locking element, wherein, The frame includes a frame body and wheels, with the wheels rotatably mounted on the frame body; The traction rod is hinged to the end of the frame away from the wheels; The brake assembly is mounted on the frame, and the traction rod can rotate along the hinge position to abut against the drive brake assembly to brake the wheels. The snap-fit ​​component is located on the drawbar. After the drawbar drives the brake assembly to brake the wheels, the snap-fit ​​component can snap onto the brake assembly.

[0007] Preferably, the brake assembly includes a mounting bracket, a movable shaft, and a brake lever, wherein, The mounting bracket is fixedly mounted on the frame. The movable shaft passes laterally through the mounting frame and is slidably connected to the mounting frame. One end of the movable shaft can abut against the traction rod. The brake lever is located inside the mounting bracket and is fixedly connected to the movable shaft. The end of the brake lever extends outward to correspond to the wheel.

[0008] Preferably, the brake lever includes a crossbar and a brake block, wherein, The crossbar is fixedly connected to the movable shaft; The brake block is located at the end of the crossbar and corresponds to the wheel.

[0009] Preferably, the brake assembly further includes a spring located on the side of the crossbar facing the wheel, and the spring is sleeved on the movable shaft.

[0010] Preferably, the movable shaft includes a shaft body, an adjusting screw, and a locking nut, wherein, The shaft passes laterally through the mounting bracket and is slidably connected to the mounting bracket; The adjusting screw is located at the end of the shaft facing the traction rod and is threaded to the end of the shaft. The locking nut is threadedly connected to the adjusting screw.

[0011] Preferably, the brake assembly includes a lug, which is located at one end of the mounting bracket facing the traction rod, and the lug can be engaged with a snap-fit ​​component.

[0012] Preferably, the locking element includes a locking rod and a pedal, wherein, One end of the snap-fit ​​rod is hinged to the traction rod. The traction rod has a limiting hole corresponding to the snap-fit ​​rod. One end of the snap-fit ​​rod corresponding to the hanging ear passes through the limiting hole and extends to the hanging ear. The end of the snap-fit ​​rod extends to the bottom and has a hook that can snap with the hanging ear. The pedal is located at one end of the hinge of the locking rod.

[0013] Preferably, the locking rod is located at the top of the hanging ear, and the hook is inclined downward. When the traction rod is pushed up, the hanging ear can lift the end of the locking rod with the hook and lock it onto the hanging ear.

[0014] Preferably, the snap-fit ​​component further includes a tension spring, which is located at the bottom of the snap-fit ​​rod. One end of the tension spring is connected to the snap-fit ​​rod, and the other end is connected to the traction rod.

[0015] Preferably, the traction rod includes a rod body, a handle, and a pad, wherein, One end of the rod is hinged to the frame; The handle is located on the other end of the pole. The pad is located on the side of the rod facing the frame and corresponds to the end of the brake assembly.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The tow truck front wheel braking device provided by this utility model has the following advantages over the prior art: (1) The brake assembly is driven by the drawbar to brake the wheels. With the help of the snap-fit ​​piece hinged on the drawbar, when the drawbar rotates along the hinge to abut against the brake assembly, it can be snapped onto the brake assembly, so that the braking state can be locked, thereby achieving continuous braking. It is especially suitable for the scenario where the trailer is parked on a slope or needs to be parked for a long time, effectively avoiding the safety hazard of the trailer rolling away. At the same time, the snap-fit ​​piece is hinged, which makes it easy to rotate along the hinge position, thereby quickly releasing the brake. The operation is convenient and quick, improving the usability of the trailer.

[0017] (2) By fixing the mounting frame to the frame, the top of the mounting frame is provided with a hanging ear, as well as a movable shaft and a brake rod that can slide laterally on the mounting frame. When the traction rod pushes the movable shaft to move, the brake rod can stably brake the wheel, which improves the stability and reliability of the braking process. At the same time, after the braking is completed, the snap-fit ​​on the traction rod cooperates with the hanging ear to lock the braking state, thereby achieving the effect of continuous braking.

[0018] (3) By combining the crossbar and the brake block, the brake block is located at the end of the crossbar and corresponds to the wheel. It works with the spring in the mounting bracket, and the spring is located between the crossbar and the wheel and is sleeved on the movable shaft. When the locking part releases the brake, the elastic restoring force of the spring can automatically reset the movable shaft and the brake rod, so that the braking device returns to its initial state, which improves the response speed and flexibility of the device.

[0019] (4) By setting an adjusting screw at one end of the shaft corresponding to the traction rod, the adjusting screw is threaded to the end of the shaft, and a locking nut is threaded to the adjusting screw, so that the length or position of the movable shaft can be finely adjusted by the adjusting screw. With the locking nut, the adjusting screw can be locked in a specific position to prevent the adjusting screw from loosening or shifting during use, and to ensure that the length or position of the movable shaft remains stable, thereby ensuring the stable and reliable performance of the braking device, thus adapting to different sizes of wheels or different braking needs, and improving the versatility and adaptability of the braking device.

[0020] (5) By setting a pedal at one end of the latching rod and setting a downward-sloping hook at the corresponding end of the hanging ear, the latching rod can be operated by the pedal to separate the hook from the hanging ear, which can quickly unlock the device. The operation is simple and reliable. At the same time, since the hook is set downward-sloping, when the traction rod is pushed up, the hanging ear can lift the end of the latching rod with the hook and latch it onto the hanging ear. This allows the braking device to automatically complete the latching action during the braking process without additional operation, which improves the intelligence and ease of use of the device.

[0021] (6) By setting a tension spring at the bottom of the snap-fit ​​component, the elastic force of the tension spring can automatically pull the snap-fit ​​rod back to the initial position, so that the snap hook is separated from the hanging ear and the quick unlocking is achieved; at the same time, during the braking process, the tension spring can also provide a certain downward traction force to the snap-fit ​​rod, ensuring the stability and reliability of the snap-fit ​​action; the elastic force of the tension spring can assist the movement of the snap-fit ​​rod, reduce the force required by the operator during the snap-fit ​​and unlocking process, reduce the difficulty of operation, and improve the comfort and convenience of operation. Attached Figure Description

[0022] Figure 1 This is a front view of the overall design of a tow truck front wheel braking device according to the present invention; Figure 2 This is a top view schematic diagram of a tow truck front wheel braking device according to the present invention; Figure 3 for Figure 2 Sectional view along line AA; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a top view schematic diagram of the brake assembly of a tow truck front wheel braking device according to the present invention; Figure 6 for Figure 5 Sectional view along the BB direction.

[0023] In the diagram: 1. Frame; 11. Frame body; 12. Wheel; 2. Tow bar; 201. Limiting hole; 21. Bar body; 22. Handle; 23. Pad; 3. Brake assembly; 31. Mounting bracket; 32. Movable shaft; 321. Shaft body; 322. Adjusting screw; 323. Locking nut; 33. Brake lever; 331. Crossbar; 332. Brake block; 34. Lug; 35. Spring; 4. Snap-fit ​​component; 41. Snap-fit ​​rod; 42. Pedal; 43. Hook; 44. Tension spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6 The present application discloses a tow truck front wheel braking device, which includes a frame 1, a tow bar 2, a brake assembly 3, and a snap-fit ​​component 4.

[0026] like Figure 1-2 As shown, the frame 1 includes a frame body 11 and a wheel 12, with the wheel 12 rotatably mounted at the bottom of the frame body 11; the traction rod 2 is hinged to the end of the frame body 11 away from the wheel 12; the brake assembly 3 is fixedly mounted on the top of the frame body 11 and located between the traction rod 2 and the wheel 12, the traction rod 2 can rotate along the hinged position and can abut against the brake assembly 3 to brake the wheel 12; the snap-fit ​​4 is hinged to the traction rod 2, and after the traction rod 2 drives the brake assembly 3 to brake the wheel 12, the snap-fit ​​4 can snap onto the brake assembly 3.

[0027] Specifically, when the tow bar 2 rotates upward, it can abut against and drive the brake assembly 3 to brake the wheel 12, and the locking piece 4 is hinged to the tow bar 2; after the tow bar 2 drives the brake assembly 3 to brake the wheel 12, the locking piece 4 can lock onto the brake assembly 3, thereby locking the braking state and achieving continuous braking; it is especially suitable for scenarios where the trailer is parked on a slope or needs to be parked for a long time, effectively avoiding the safety hazard of the trailer rolling away; at the same time, the hinged setting of the locking piece 4 makes it easy to rotate along the hinge position, thereby quickly releasing the brake, making the operation convenient and quick, and improving the ease of use of the trailer.

[0028] In some embodiments, such as Figure 1-6 As shown, the brake assembly 3 includes a mounting bracket 31, a movable shaft 32, a brake lever 33, and a lug 34. The mounting bracket 31 is fixedly mounted on the top of the frame 11 and located between the traction rod 2 and the wheel 12. The movable shaft 32 passes laterally through the mounting bracket 31 and is slidably connected to the mounting bracket 31. One end of the movable shaft 32 can abut against the traction rod 2. The brake lever 33 is located inside the mounting bracket 31 and is fixedly connected to the movable shaft 32. The end of the brake lever 33 extends outward to correspond to the wheel 12. The lug 34 is located on the top of the mounting bracket 31 facing the traction rod 2 and can be engaged with the snap-fit ​​member 4.

[0029] Specifically, when the traction rod 2 rotates upward, it pushes the movable shaft 32 to slide along the mounting bracket 31, thereby driving the brake rod 33 to move, so that the end of the brake rod 33 contacts the wheel 12 to achieve the braking function; at this time, the locking piece 4 hinged on the traction rod 2 cooperates with the lug 34 to lock the braking state, thereby achieving the effect of continuous braking and improving the stability and reliability of the braking process.

[0030] Optionally, the brake lever 33 includes a crossbar 331 and a brake block 332, wherein the crossbar 331 is fixedly connected to the movable shaft 32; the brake block 332 is located at the end of the crossbar 331 and corresponds to the wheel 12, so that when the traction rod 2 rotates upward along the hinge, the crossbar 331 can drive the brake block 332 to precisely brake the wheel 12.

[0031] Optionally, the brake assembly 3 also includes a spring 35, which is located inside the mounting bracket 31 and between the crossbar 331 and the wheel 12. The spring 35 is sleeved on the movable shaft 32. When the brake is released, the elastic restoring force of the spring 35 can automatically reset the movable shaft 32 and the brake lever 33, so that the brake device returns to its initial state, improving the response speed and flexibility of the device. At the same time, during the braking process, the spring 35 can play a certain buffering role, reducing the impact force on the wheel 12 and the brake assembly 3 during braking, reducing the wear of parts, and improving the service life and reliability of the entire device.

[0032] In some embodiments, such as Figure 4-6 As shown, the movable shaft 32 includes a shaft body 321 and an adjusting screw 322. The shaft body 321 passes laterally through the mounting frame 31 and is slidably connected to the mounting frame 31. The adjusting screw 322 is located at one end of the shaft body 321 facing the traction rod 2 and is threadedly connected to the end of the shaft body 321.

[0033] Specifically, through the cooperation of the shaft 321 and the adjusting screw 322, the length or position of the movable shaft 32 can be finely adjusted by the adjusting screw 322, thereby adapting to different sizes of wheels 12 or different braking requirements, and improving the versatility and adaptability of the braking device.

[0034] Optionally, the movable shaft 32 also includes a locking nut 323, which is threadedly connected to the adjusting screw 322. The locking nut 323 can lock the adjusting screw 322 in a specific position to prevent the adjusting screw 322 from loosening or shifting during use, ensuring that the length or position of the movable shaft 32 remains stable, thereby ensuring the stable and reliable performance of the braking device.

[0035] In some embodiments, such as Figure 4-6As shown, the snap-fit ​​component 4 includes a snap-fit ​​rod 41 and a pedal 42. One end of the snap-fit ​​rod 41 is hinged to the traction rod 2. The traction rod 2 has a limiting hole 201 at the location corresponding to the snap-fit ​​rod 41. One end of the snap-fit ​​rod 41 corresponding to the hanging ear 34 passes through the limiting hole 201, and the end extends to the bottom with a hook 43 that can be snapped with the hanging ear 34. The pedal 42 is located at the top of one end of the snap-fit ​​rod 41 at the hinge.

[0036] Specifically, after the brake is applied by rotating the traction rod 2 upwards, the hook 43 of the locking rod 41 can be engaged with the lug 34 to lock the brake assembly 3 and achieve continuous braking. When it is necessary to release the brake, the locking rod 41 can be operated by the pedal 42 to separate the hook 43 from the lug 34, which can quickly unlock the brake. The operation is simple and reliable, meeting the flexible needs in actual use.

[0037] Optionally, the locking rod 41 is located at the top of the hanging ear 34, and the hook 43 is inclined downward. When the traction rod 2 is pushed up, the hanging ear 34 can lift the end of the locking rod 41 with the hook 43 and lock it onto the hanging ear 34. When the traction rod 2 is pushed up, the hanging ear 34 approaches the hook 43 of the locking rod 41, and the hook 43 is inclined downward, so that after the hanging ear 34 approaches, it can lift the locking rod 41 along the inclined part and lock it onto the hanging ear 34 under the action of gravity.

[0038] Optionally, the latching component 4 also includes a tension spring 44, which is located at the bottom of the latching rod 41. One end of the tension spring 44 is connected to the latching rod 41, and the other end is connected to the traction rod 2. When the brake is released, the elastic force of the tension spring 44 can automatically pull the latching rod 41 back to its initial position against the bottom of the limiting hole 201, so that the latch hook 43 is separated from the hanging ear 34, achieving quick unlocking. At the same time, during the braking process, the tension spring 44 can also provide a certain downward traction force to the latching rod 41, ensuring the stability and reliability of the latching action, reducing the force required by the operator during the latching and unlocking process, reducing the difficulty of operation, and improving the comfort and convenience of operation.

[0039] In some embodiments, such as Figure 1-2 As shown, the traction rod 2 includes a rod body 21, a handle 22, and a pad 23. One end of the rod body 21 is hinged to the frame 11, and the handle 22 is located at the other end of the rod body 21. The pad 23 is located on the side of the rod body 21 facing the frame 11 and corresponds to the end of the brake assembly 3.

[0040] Specifically, the traction hole facilitates the connection of the traction rod 2 to other equipment. Meanwhile, the handle 22 is located on the end of the rod 21 facing away from the frame 11, making it convenient for operators to hold and operate the traction rod 2 to perform braking or releasing actions. The pad 23 provides a certain degree of protection for the rod 21 when braking.

[0041] In practical use, when braking is required, the operator lifts the pull rod 2 upwards. The pull rod 2 rotates around the hinge point and pushes the movable shaft 32 to slide along the mounting bracket 31. The movable shaft 32 drives the brake lever 33 to move, and the brake block 332 at its end contacts the wheel 12, generating friction to slow down or stop the wheel 12. At the same time, the locking rod 41 of the locking member 4 is lifted by the lug 34, and the hook 43 engages with the lug 34, locking the braking state and achieving continuous braking, suitable for parking on slopes or long-term parking.

[0042] When the brake is released, the operator presses the pedal 42, the locking rod 41 rotates to separate the locking hook 43 from the hanging ear 34, the spring 35 releases its elastic potential energy, pushes the movable shaft 32 and the brake lever 33 to reset, the brake block 332 separates from the wheel 12, and the traction rod 2 is reset, the device returns to its initial state, ready for the next braking operation.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A braking device for the front wheel of a trailer, characterized in that: Includes a frame (1), a tow bar (2), a brake assembly (3), and a snap-fit ​​connector (4), among which, The frame (1) includes a frame (11) and wheels (12), the wheels (12) being rotatably mounted on the frame (11); The traction rod (2) is hinged to the end of the frame (11) away from the wheel (12); The brake assembly (3) is mounted on the frame (11), and the traction rod (2) can rotate along the hinge position to abut against the drive brake assembly (3) to brake the wheel (12); The snap-fit ​​component (4) is provided on the traction rod (2). After the traction rod (2) drives the brake assembly (3) to brake the wheel (12), the snap-fit ​​component (4) can be snapped onto the brake assembly (3).

2. The towing front wheel braking device according to claim 1, characterized in that, The brake assembly (3) includes a mounting bracket (31), a movable shaft (32), and a brake lever (33), wherein, The mounting bracket (31) is fixedly mounted on the frame (11); The movable shaft (32) passes laterally through the mounting frame (31) and is slidably connected to the mounting frame (31). One end of the movable shaft (32) can abut against the traction rod (2). The brake lever (33) is located inside the mounting bracket (31) and is fixedly connected to the movable shaft (32). The end of the brake lever (33) extends outward to correspond to the wheel (12).

3. The towing front wheel braking device according to claim 2, characterized in that, The brake lever (33) includes a crossbar (331) and a brake block (332), wherein, The crossbar (331) is fixedly connected to the movable shaft (32); The brake block (332) is located at the end of the crossbar (331) and corresponds to the wheel (12).

4. The towing front wheel braking device according to claim 3, characterized in that, The brake assembly (3) also includes a spring (35) located on the side of the crossbar (331) facing the wheel (12), and the spring (35) is sleeved on the movable shaft (32).

5. A tow truck front wheel braking device according to claim 2, characterized in that, The movable shaft (32) includes a shaft body (321), an adjusting screw (322), and a locking nut (323), wherein, The shaft (321) passes laterally through the mounting bracket (31) and is slidably connected to the mounting bracket (31); The adjusting screw (322) is located at one end of the shaft (321) facing the traction rod (2) and is threaded to the end of the shaft (321); The locking nut (323) is threadedly connected to the adjusting screw (322).

6. The towing front wheel braking device according to claim 2, characterized in that, The brake assembly (3) includes a lug (34) located at one end of the mounting bracket (31) facing the traction rod (2), and the lug (34) can be engaged with the snap-fit ​​member (4).

7. A tow truck front wheel braking device according to claim 6, characterized in that, The latching component (4) includes a latching rod (41) and a pedal (42), wherein, One end of the snap-fit ​​rod (41) is hinged to the traction rod (2). The traction rod (2) has a limiting hole (201) corresponding to the snap-fit ​​rod. One end of the snap-fit ​​rod (41) corresponding to the hanging ear (34) passes through the limiting hole (201) and extends toward the hanging ear (34). The end of the snap-fit ​​rod (41) extends toward the bottom and has a hook (43) that can be snapped with the hanging ear (34). The pedal (42) is located at one end of the hinge of the locking rod (41).

8. A tow truck front wheel braking device according to claim 7, characterized in that, The locking rod (41) is located at the top of the hanging ear (34), and the hook (43) is set at an angle downward. When the traction rod (2) is pushed up, the hanging ear (34) can lift up the end of the locking rod (41) with the hook (43) and lock it onto the hanging ear (34).

9. A tow truck front wheel braking device according to claim 7, characterized in that, The snap-fit ​​component (4) also includes a tension spring (44), which is located at the bottom of the snap-fit ​​rod (41). One end of the tension spring (44) is connected to the snap-fit ​​rod (41), and the other end is connected to the traction rod (2).

10. A tow truck front wheel braking device according to claim 1, characterized in that, The traction rod (2) includes a rod body (21), a handle (22), and a pad (23), wherein, One end of the rod (21) is hinged to the frame (11); The handle (22) is located on the other end of the rod (21); The pad (23) is located on the side of the rod (21) facing the frame (11) and corresponds to the end of the brake assembly (3).

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