Car traction device

Abstract

This utility model discloses a car traction device, including a bracket, a cross arm, and pressure rods. The bracket includes an upper support arm, a lower support arm, a sliding rod, and fasteners. The outer end of the lower support arm is connected to the pressure rod via the cross arm, and the outer end of the upper support arm is also connected to the pressure rod via the cross arm. The inner end of the upper support arm extends to the sliding rod, and the lower support arm is slidably connected to the sliding rod. Fasteners are connected to the upper and lower support arms to tighten or loosen and adjust the distance between the upper and lower support arms. In this car traction device, the upper and lower support arms form a telescopic structure, allowing at least three pressure rods to be placed around the tire. Then, the lower support arm is retracted, tightening the pressure rods to clamp them tightly against the outer wall of the tire tread. The fasteners are then tightened to secure the device. The pressure rods increase ground friction, and driving the car causes the tire and pressure rods to rotate, thus enabling the car to slip and get out of trouble.

Description

Technical Field

[0001] This utility model relates to the field of automobile rescue device technology, and in particular to an automobile get-out-of-difficulty device. Background Technology

[0002] When a vehicle gets stuck on low-traction surfaces such as mud, sand, or icy roads, existing methods for getting the vehicle out of trouble typically rely on external rescue equipment (including tow ropes and winches) and artificial support materials (such as planks, snow chains, and traction boards) to pull the vehicle out. However, this external rescue equipment has the following problems: 1. Relying on external rescue is time-consuming and costly, especially when a vehicle is stuck in harsh outdoor conditions alone. If it cannot be freed in time, it can sometimes even be life-threatening. 2. Installation is troublesome and difficult for non-professionals to install. Utility Model Content

[0003] The purpose of this invention is to provide a car traction device that can help a car get out of trouble when it slips, in order to address the above-mentioned problems.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The car traction device includes a bracket, a cross arm, and a pressure bar. The bracket includes an upper support arm, a lower support arm, a sliding rod, and fasteners. The outer end of the lower support arm is connected to the pressure bar via the cross arm, and the outer end of the upper support arm is connected to the pressure bar via the cross arm. The inner end of the upper support arm extends to the sliding rod, and the lower support arm is slidably connected to the sliding rod. Fasteners are connected to the upper and lower support arms to lock or loosen and adjust the distance between the upper and lower support arms.

[0005] The system comprises at least three pressure bars, divided into two groups. These two groups are evenly distributed across the upper and lower support arms. Each support arm has a corresponding crossarm, and the three pressure bars are connected to the upper or lower support arm via their respective crossarms. Furthermore, at least three pressure bars protrude from the back of the upper or lower support arm. Alternatively, the system may have four pressure bars, with two pressure bars forming a group, distributed on the left or right sides of either the upper or lower support arm.

[0006] As mentioned above, the upper support arm and the lower support arm form a telescopic structure that can fit at least three pressure rods around the tire. Then, the lower support arm is retracted, the pressure rods are tightened and clamped to the outer wall of the tire crown, and the fasteners are tightened to fix it. The pressure rods are used to increase the ground friction. The car is driven to drive the tire and pressure rods to rotate, so that the car can slip and get out of trouble.

[0007] Based on the aforementioned solution, in an improved version, to address the issue of the large space occupied by the car traction device's pressure bar being constantly in the extended state, a pressure bar protrudes from the back side of the outer end of the cross arm. One side of the inner end of the cross arm is hinged to the upper or lower support arm, and the other side of the inner end of the cross arm is detachably connected to the upper or lower support arm via a limiting bolt assembly. The cross arm can be extended and fixed when the locking bolt is tightened, and can rotate and retract around the hinge position when the locking bolt is loosened. Thus, the hinge structure and locking bolt assembly enable both the extended state for fixing and the retracted state for storage. The protruding length of the pressure bar from the back side of the cross arm is greater than the width of the car's tire, thereby increasing the ground friction.

[0008] Based on the aforementioned solution, in an improved solution, to improve the connection and fixation stability of the vehicle traction device, the vehicle traction device further includes a hanger, which includes a pull rope and a rope tensioner. The rope tensioner is installed on the front side of the upper support arm or the lower support arm. The two ends of the pull rope are detachably connected to the tensioning port of the rope tensioner so that the pull rope can be threaded onto the wheel spoke. Under the condition of external force tightening, the rope tensioner can tighten the pull rope to press the upper support arm, the lower support arm, and the slide bar tightly against the wheel spoke. In this way, it can be connected and fixed to the wheel spoke, further improving the connection stability. Specifically, the rope tensioner includes a housing, a top rope plate, and a tightening screw. The bottom of the housing is located on the side of the upper or lower support arm. Sliding holes are provided on both sides of the housing, extending between the top and bottom of the housing. The top rope plate passes through these sliding holes. A top screw hole is provided in the middle of the top rope plate. The tightening screw passes through the top of the housing and is threaded into the top screw hole. Rope holes adapted to the pull rope are provided at both ends of the top rope plate. A tensioning sleeve is provided at the rope hole. The tensioning sleeve has a tensioning opening adapted to the pull rope. A clamping bolt is threaded to the side wall of the tensioning sleeve. The clamping bolt can clamp or loosen the pull rope when tightened or loosened. In this way, the pull rope can be quickly disassembled and fixed.

[0009] Based on the aforementioned solution, in an improved solution, to achieve a secure connection of the car traction device's fasteners, the fasteners include lifting lugs and a lead screw assembly. The top of the lifting lugs has lifting holes, and two lifting lugs are respectively located on the front of the upper and lower support arms. The lead screw assembly is bolted to the two lifting holes. Thus, the lead screw assembly extends vertically and employs an inward-contracting tightening structure. Using a wrench can improve the tightening of the lever, enhancing the connection's firmness and stability. Preferably, the car traction device's fasteners also include bushings. Bushings are arranged at the lifting holes, and the shaft holes of the two bushings are aligned and extend vertically. The lead screw assembly passes through and is bolted to the two bushings. Thus, the bushings guide and limit the vertical extension.

[0010] Based on the aforementioned solution, in an improved version, to address the issue of needing to lift the wheels significantly when stuck in mud, the vehicle traction device further includes an external support component. This external support component includes a pry bar, which is detachably connected to the outer end of the upper support arm. In its installed state, the pry bar protrudes from the side of the upper support arm or upwards. This allows the pry bar to be installed with a certain length of axial extension from the outer edge of the tire, embedding itself in the unslipped ground next to the wheel ruts, providing better support and allowing the pry bar to lift higher. Alternatively, the pry bar can protrude a certain length radially from the tire, embedding itself deeper into the ground, providing even better support. Preferably, the pry bar includes a body and an end plate, with the end plate radially protruding from the outer end of the body. This radial protrusion increases the contact area, thereby improving support. Preferably, the external support of the vehicle traction device also includes a plug rod, a pry bar is disposed at the upper end of the plug rod, and the pry bar extends upward or protrudes from the front side of the plug rod. The upper end of the upper support arm is provided with a blind groove extending downward, and the lower end of the plug rod is inserted into the blind groove. In this way, the pry bar can be disassembled and installed, and the pry bar can be detachably connected.

[0011] By adopting the above technical solution, this utility model has the following beneficial effects: This utility model discloses a car traction device. The upper and lower support arms form a telescopic structure, allowing at least three pressure rods to be fitted around the tire. Then, the lower support arm retracts, tightening the pressure rods to clamp them firmly against the tire's outer wall. Fasteners are then tightened to secure the device. The pressure rods increase ground friction. Driving the car causes the tire and pressure rods to rotate, enabling the car to slip and escape. The at least three pressure rods create multiple clamping positions, opening and clamping the tire's outer edge. When one pressure rod rotates to ground contact, the others clamp onto the tire, resulting in greater stability and improved circumferential ground friction. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the bracket connection structure of Example 1 of the car get-out device of this utility model. Figure 2 yes Figure 1 Another perspective structural diagram. Figure 3 yes Figure 1 Another perspective structural diagram. Figure 4 yes Figure 1 Another perspective structural diagram. Figure 5 yes Figure 1 Another perspective structural diagram. Figure 6 yes Figure 1 Top view. Figure 7 yes Figure 1 Use the state structure diagram. Figure 8 This is a schematic diagram of the crowbar structure of Example 1 of the car get-out device of this utility model. Figure 9 yes Figure 8 Another perspective structural diagram.

[0013] Figure 10This is a schematic diagram of a crowbar structure, Example 2 of the car get-out device of this utility model. Figure 11 yes Figure 10 Another perspective structural diagram. Figure 12 This is another schematic diagram of a pry bar structure in Example 2 of the car get-out device of this utility model. Figure 13 yes Figure 12 Another perspective structural diagram. Figure 14 This is a top view of the bracket connection in Example 2 of the car get-out device of this utility model.

[0014] Figure 15 This is a top view of the bracket connection in Example 3 of the car get-out device of this utility model.

[0015] In the attached diagram, 1 is the pressure bar, 2 is the cross arm, 3 is the upper support arm, 4 is the lower support arm, 5 is the slide bar, 6 is the screw rod, 7 is the pull rope, and 8 is the crowbar. Detailed Implementation

[0016] Example

[0017] As mentioned above, this application includes basic solutions and improved solutions. For example, an improved solution may include a hanging device to further enhance the connection strength; an improved solution may include a crowbar; an improved solution may include a crowbar and a hanging device, etc. The feature combinations of each application example can be combined according to actual needs. The following will use examples of preferred combinations of all features to illustrate the application.

[0018] See Figures 1-15 The car traction device of this embodiment includes a bracket, a cross arm 2, and a pressure rod 1. The bracket includes an upper support arm 3, a lower support arm 4, a sliding rod 5, and fasteners. The outer end of the lower support arm is connected to the pressure rod via the cross arm, and the outer end of the upper support arm is connected to the pressure rod via the cross arm. The inner end of the upper support arm extends to a sliding rod, and the lower support arm is slidably connected to the sliding rod (e.g., ...). Figure 7 As shown, the tire can move radially outward or inward. Fasteners are connected to the upper and lower support arms to lock or release and adjust the distance between the upper and lower support arms.

[0019] The system comprises at least three pressure rods, divided into two groups. These two groups are evenly distributed across the upper and lower support arms. Each support arm has a corresponding crossarm, and the three pressure rods are connected to the upper or lower support arm via their respective crossarms. At least three pressure rods protrude from the back of the upper and lower support arms (extending axially along the tire and protruding from the back of the support). For example, with three pressure rods, one group has two rods symmetrically arranged on both sides of the upper support arm, and the other group has one rod extending vertically, each positioned in the middle of its respective area. In this case, the crossarms have two different structures and lengths. Alternatively, with four pressure rods, two rods form a group, distributed on the left or right sides of the upper or lower support arm. In this case, the four pressure rods can be symmetrically arranged horizontally and vertically, using the same crossarm structure. As shown in the figure, four rods are used as an example. The pressure rods can be welded or... Figure 1 The cross arm 2 is connected by a nut and bolt as shown.

[0020] To address the issue of the car traction device's lever occupying significant space when constantly extended, a lever is protruding from the back of the outer end of the crossarm. One side of the inner end of the crossarm is hinged to either the upper or lower support arm, as shown in the figure, via a pin 22 and a sleeve 21. The sleeve 21 can be welded or bolted. The other side of the inner end of the crossarm is detachably connected to the upper or lower support arm via a limiting bolt assembly 23. The crossarm can be extended and fixed when the locking bolt is tightened, and can rotate and retract around the hinged position when the locking bolt is loosened. Thus, the hinged structure and locking bolt enable both the extended and retracted states for secure operation. To ensure greater ground friction, the protruding length of the strut extending beyond the back of the crossarm can be limited to one-third the width of the car's tire. For example, if the tire width is 225mm and the strut length is 112.5mm, or if the tire width is 225mm and the strut length is 225mm, or if the tire width is 225mm and the strut length is 230 or 240mm, then if the strut length is greater than the tire width, care must be taken to ensure the clearance between the tire and the fender liner to prevent the strut from scraping the fender liner due to its excessive length.

[0021] Of course, the pin 22 and the limiting bolt kit 23 can be interchanged. To facilitate the disassembly and assembly of the limiting bolt kit, a wing nut is used in conjunction with the bolt.

[0022] To improve the stability of the car traction device, it also includes a hanger, which consists of a pull rope 7 and a rope tensioner. The rope tensioner is installed on the side of the upper or lower support arm. As shown in the figure, the rope tensioner is welded or bolted to the upper support arm through a U-shaped structure on its bottom wall. The two ends of the pull rope are detachably connected to the tensioning port of the rope tensioner so that the pull rope can be threaded onto the wheel spoke. Under external force, the rope tensioner can tighten the pull rope to press the upper and lower support arms and the slide bar against the wheel spoke. In this way, it can be connected and fixed to the wheel spoke, further improving the connection stability. This can be achieved using an existing rope tensioner, as shown in the following example. The rope tensioner includes a housing 71, a top rope plate 72, and a tightening screw 74. The bottom end of the housing is located on the side of the upper or lower support arm. Sliding holes are provided on both sides of the housing, extending between the top and bottom ends of the housing. The top rope plate passes through these sliding holes. A top screw hole is provided in the middle of the top rope plate. The tightening screw passes through the top of the housing and is threaded into the top screw hole. Rope holes adapted to the pull rope are provided at both ends of the top rope plate. A tensioning sleeve 73 is provided at the rope hole. The tensioning sleeve has a tensioning port adapted to the pull rope. A clamping bolt is threaded to the side wall of the tensioning sleeve (a screw hole connecting to the tensioning port is provided and threaded to the clamping bolt). The clamping bolt can clamp or loosen the pull rope when tightened or loosened. In this way, the pull rope can be quickly disassembled and fixed.

[0023] The fasteners can be existing electronic telescopic structures such as electric telescopic rods or existing mechanical fastening structures. This application uses a mechanical fastening structure as an example to illustrate the fastening connection of the car traction device. The fasteners include a lifting lug 61 and a lead screw assembly 6. The lifting lug can be a single-plate structure or a U-shaped double-plate structure as shown in the figure. The top of the lifting lug has a lifting hole. The two lifting lugs are respectively set on the front of the upper support arm and the lower support arm. The lead screw assembly (lead screw and nut) is bolted to the two lifting holes. In this way, the lead screw assembly is arranged vertically, and an inward contraction and tightening structure is adopted. With the help of a wrench, the tightening of the pressure rod can be improved, and the connection firmness and stability can be improved. Preferably, the fasteners of the car traction device also include bushings. Bushings are arranged at the lifting holes. The shaft holes of the two bushings are in the same straight line and extend vertically. The lead screw assembly passes through and is bolted to the two bushings. In this way, the bushings play a role in guiding and limiting the vertical extension arrangement.

[0024] To address the issue of needing to lift the wheels significantly when stuck in mud, this vehicle traction device also includes an external support component. This component includes a pry bar 8, which is detachably connected to the outer end of the upper support arm. In its installed state, the pry bar protrudes from the side of the upper support arm or upwards. This allows the pry bar to be installed with a certain length of axial extension from the outer edge of the tire, embedding itself in the unslipped ground next to the wheel ruts for better support, thus allowing the pry bar to lift higher. Alternatively, the pry bar can protrude a certain length radially from the tire, embedding itself deeper into the ground for even better support. Preferably, the pry bar 8 includes a body and an end plate. The end plate protrudes radially from the outer end of the body, increasing the contact area and thus improving support. Preferably, the external support component of the vehicle traction device also includes a pry bar, with a pry bar positioned at the upper end of the pry bar, extending upwards or protruding from the side of the pry bar. The upper end of the upper support arm has a downward-extending blind groove in the shape of a rectangle, square, or hexagon, etc., into which the lower end of the pry bar is inserted. This allows for the pry bar to be detached and installed. To secure the pry bar, a pressure hole is formed on the side wall of the upper support arm, and a tightening bolt is threaded into the pressure hole, thereby pressing the outer wall of the pry bar firmly into place.

[0025] like Figures 1-7 Example 1 of a car traction device uses a horizontal arm hinged connection. A long opening extending through the top of the upper support arm is made on the front. The width of the opening is smaller than the slot. The insertion rod 81 is fitted to the slot 31. A pry bar is mounted on the insertion rod via a support plate. It can be arranged radially or axially along the tire. The support plate has a relatively long vertical length. To accommodate the width of the long opening, the support plate is recessed inward by a certain length, for example, 10mm on each side. Figures 8-9 .like Figures 10-14 Example 2 is a car get-out device. The difference is that the bearing plate is shorter and is arranged close to the side wall of the plug rod. The upper support arm has a slot '31' and no long opening (the radial limiting effect is poor due to the lack of a long opening and bearing plate). Figures 10-11 The central pry bar is arranged radially through the support plate 82. Figures 12-13 The central pry bar is axially arranged through the support plate '82'. Figure 14 The middle cross arm '2' is a single straight segment and welded in place. To accommodate different tire sizes, the lengths of the lower support arm '4' and the slide bar '5' are appropriately increased. Figure 15 Example 3 is a car traction device. The difference lies in the two-arm structure. The arm '2' adopts a single straight segment structure and is welded and fixed, while the arm "2" adopts an inward concave angle structure and is welded and fixed, which better supports the inward pressure force from the outer edge of the tire.

[0026] As described above, the upper and lower support arms form a telescopic structure that allows at least three pressure rods to be fitted around the tire. Then, the lower support arm retracts, tightening the pressure rods to clamp them firmly against the tire's outer wall. Fasteners are then tightened to secure the structure. The pressure rods increase ground friction, and driving the car causes the tire and pressure rods to rotate, enabling the car to slip and get out of trouble. The at least three pressure rods create multiple clamping positions, opening and clamping against the tire's outer edge. When one pressure rod rotates to ground contact, the others clamp onto the tire, resulting in a more stable connection and increased circumferential ground friction.

[0027] As described above, this vehicle traction device includes a telescopic sleeve bracket (upper and lower support arms, slide bar), a tire clamping and fixing mechanism (pressure bar and cross arm), a rope tensioner, and a multi-functional pry bar. The travel of the telescopic sleeve bracket is adjusted by the nut on the T-shaped screw to clamp the tire. The rope tensioner tightens the steel cable to secure the traction device to the wheel spokes. The pry bar (and pressure bar) provide relatively stable support for the stuck tire. The vehicle's own power is used to rotate the traction device, and the multi-functional pry bar is used to increase traction and achieve rapid extrication.

[0028] This vehicle traction device is a multi-functional vehicle traction device that can be quickly installed, adapts to various terrains, and requires no external rescue. It has the following advantages.

[0029] 1) Quick Fixing Device: Utilizing the telescopic sleeve support structure, tightening the nuts on the trapezoidal screws on the support frame quickly clamps the tire onto the tire via the pressure rods on the four movable arms connected to the support frame, fixing it to the wheel. The cable tensioner is then used to further secure the traction device to the wheel spokes by tightening the wire rope.

[0030] 2) Multiple detachable structures and accessories provide various ways to get out of trouble: 1. Utilize the tire protrusion of the pressure bar on the movable arm to increase ground friction and achieve general slippage and get out of trouble; 2. By installing a pry bar sleeve on the support arm and installing a multi-functional pry bar, the pry bar extends radially outward, and the tire rotation drives the pry bar to pry the car out of trouble; 3. By installing a multi-functional pry bar on the side, the car can be pried off the side by the tires using a better foundation on the side.

[0031] 3) It requires no external rescue and can be operated by a single person; it adapts to terrain and is suitable for various scenarios such as muddy, sandy, and icy roads; it is lightweight and portable and can be integrated into the trunk of a vehicle. It has the advantages of being lightweight, easy to operate, easy to install, has a small storage space, and is highly adaptable, making it suitable for various complex road condition rescue scenarios.

[0032] It should be noted that the examples of the above embodiments can preferably be combined with one or more of each other according to actual needs, and the accompanying drawings of multiple examples adopt a set of combined technical features, which will not be described in detail here.

[0033] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying 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.

[0034] The above description is a detailed explanation and illustration of the preferred embodiments of the present utility model. However, these descriptions are not intended to limit the scope of protection claimed by the present utility model. All equivalent changes or modifications made under the technical teachings of the present utility model shall fall within the patent protection scope covered by the present utility model.

Claims

1. A car traction device, characterized in that: The device includes a bracket, a cross arm, and pressure rods. The bracket includes an upper support arm, a lower support arm, a sliding rod, and fasteners. The outer end of the lower support arm is connected to the pressure rod via the cross arm, and the outer end of the upper support arm is connected to the pressure rod via the cross arm. The inner end of the upper support arm extends to the sliding rod, and the lower support arm is slidably connected to the sliding rod. The fasteners are connected to the upper and lower support arms to lock or loosen and adjust the distance between the upper and lower support arms. The number of pressure rods is at least three, and the at least three pressure rods are divided into two groups, which are evenly distributed on the upper and lower support arms. Each group of pressure rods is equipped with a matching cross arm, and the at least three pressure rods are respectively connected to the upper or lower support arm via corresponding cross arms. The at least three pressure rods protrude from the back side of the upper and lower support arms.

2. The vehicle traction device according to claim 1, characterized in that: The number of pressure rods is 4, with 2 pressure rods forming a group, and they are distributed on the left and right sides of the upper or lower support arm.

3. The vehicle traction device according to claim 1 or 2, characterized in that: A pressure rod is provided on the back side of the outer end of the cross arm. One side of the inner end of the cross arm is hinged to the upper support arm or the lower support arm, and the other side of the inner end of the cross arm is detachably connected to the upper support arm or the lower support arm by a limiting bolt assembly. The cross arm can be unfolded and fixed when the locking bolt is locked, and can be rotated and retracted around the hinge position when the locking bolt is loosened.

4. The vehicle traction device according to claim 1, characterized in that: It also includes a hanging device, which includes a pull rope and a rope tensioner. The rope tensioner is installed on the side of the upper or lower support arm. The two ends of the pull rope are detachably connected to the tensioning port of the rope tensioner so that the pull rope can be threaded onto the wheel spoke. When the rope tensioner is tightened by external force, it can tighten the pull rope to press the upper and lower support arms and the slide bar against the wheel spoke.

5. The vehicle traction device according to claim 4, characterized in that: The rope tensioner includes a housing, a top rope plate, and a tightening screw. The bottom end of the housing is located on the side of the upper or lower support arm. Sliding holes are provided on both sides of the housing, extending between the top and bottom ends of the housing. The top rope plate passes through the sliding holes. A top screw hole is provided in the middle of the top rope plate. The tightening screw passes through the top end of the housing and is threaded into the top screw hole. Rope holes adapted to the pull rope are provided at both ends of the top rope plate. A tensioning sleeve is provided at the rope hole. The tensioning sleeve has a tensioning opening adapted to the pull rope. A clamping bolt is threaded to the side wall of the tensioning sleeve, and the clamping bolt can clamp or loosen the pull rope when tightened or loosened.

6. The vehicle traction device according to claim 1, characterized in that: The fastener includes a lifting lug and a lead screw assembly. The top of the lifting lug has a lifting hole, and the two lifting lugs are respectively located on the front of the upper support arm and the lower support arm. The lead screw assembly is bolted to the two lifting holes.

7. The vehicle traction device according to claim 6, characterized in that: The fastener also includes bushings, with bushings arranged at the lifting holes. The shaft holes of the two bushings are aligned in a straight line and extend vertically. The lead screw assembly passes through and is bolted to the two bushings.

8. The vehicle traction device according to claim 1, characterized in that: It also includes an external support component, which includes a pry bar. The pry bar is detachably connected to the outer end of the upper support arm, and the pry bar protrudes from the front side of the upper support arm or protrudes upward when installed.

9. The vehicle traction device according to claim 8, characterized in that: The external support also includes a plug rod, a pry bar is disposed at the upper end of the plug rod, and the pry bar extends upward or protrudes from the front side of the plug rod. The upper end of the upper support arm is provided with a blind groove extending downward, and the lower end of the plug rod is inserted into the blind groove. The pry bar includes a rod body and an end plate, and the end plate protrudes radially from the outer end of the rod body.

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