Wheel fixer

Abstract

The invention provides a wheel fixer, and belongs to the technical field of machinery. The problem that an existing wheel fixator is inconvenient to operate and wastes time and labor is solved. The wheel fixing device comprises a support, a binding belt, a tensioning frame, a first reversing shaft and a belt shaft, the tensioning frame is hinged to the support through a hinge shaft, a self-locking shaft and a tensioning shaft which are parallel to the hinge shaft and distributed in a triangular mode are fixed to the tensioning frame, one end of the binding belt is provided with a belt hook, and the other end of the binding belt is wound around the first reversing shaft, the self-locking shaft and the tensioning shaft in sequence and then wound around the belt shaft. When the tensioning frame swings to the first position, the tensioning shaft is located below the self-locking shaft, the tensioning shaft and the self-locking shaft are both located between the hinged shaft and the first reversing shaft, when the tensioning frame swings to the second position, the tensioning shaft is located below a connecting line between the hinged shaft and the first reversing shaft, and the self-locking shaft is located below the tensioning shaft. During operation, pre-tightening is achieved only by slightly rotating the belt shaft, then the swing frame is pushed upwards forcibly to tighten the binding belt and achieve self-locking, and operation is easy, convenient and labor-saving.

Description

Technical Field

[0001] The invention belongs to the technical field of machinery and relates to a wheel fixer. Background Art

[0002] During the transportation of a vehicle, the wheels need to be fixed to prevent the vehicle from moving around randomly during transportation to ensure transportation safety. A wheel fixer is a tool used to fix the wheels of a vehicle during transportation.

[0003] For example, a Chinese patent application (application number 201920016137.4) discloses a wheel fixer, comprising a bracket capable of resting against a wheel, a reel rotatably arranged on the bracket, and a binding strap, wherein the bracket is provided with a tensioning shaft 1 and a tensioning shaft 2, the protruding end of the binding strap is connected to a belt hook, and the other end is wound around the reversing shaft 1 and the reversing shaft 2 in turn, and is wound around the reel. The wheel fixer also comprises a bird stopper and two ratchets fixedly mounted on both ends of the reel, the bird stopper comprises two V-shaped plate-shaped and symmetrically arranged pawls, the two pawls are respectively located on the sides of the two ratchets, the middle portions of the two pawls are respectively hinged to the outer walls of the two side plates of the bracket, and one end of the two pawls can be engaged with the corresponding ratchets. When fixing the vehicle, the bracket is placed against the wheel and fixed to the floor of the truck, and then the binding strap is hooked around the wheel hook and hung on the hook hole on the floor of the truck. The binding strap is tightened by rotating the reel with a tool to complete the fixing of the wheel.

[0004] When the wheel fixer is used to fix the wheel, the tool needs to be used to continuously rotate the reel to tighten the binding belt. Moreover, the further it is tightened, the greater the force required to be applied, which makes the operation inconvenient, time-consuming and labor-intensive.

[0005] In order to solve the above problem, the conventional approach is to use a dedicated labor-saving tool to rotate the reel, which is very costly. Summary of the Invention

[0006] The purpose of the present invention is to address the above-mentioned problems in the existing technology and propose a wheel holder. The technical problem to be solved by the present invention is: how to solve the problem that the existing wheel holder is inconvenient to operate and time-consuming and labor-intensive.

[0007] The yoke is a device for rotating the wheels of the vehicle, wherein the yoke has a first end fixed to the chassis and a second end fixed to the chassis to move the yoke relative to the chassis, wherein the yoke has a first end fixed to the chassis and a second end fixed to the chassis to move the yoke relative to the chassis.

[0008] When fixing a vehicle with this wheel fixer, the tensioning frame is swung to the first position, the bracket is placed against the wheel and fixed to the floor of the truck through a hook, and then one end of the strap with the hook is passed around the wheel hook and hung on the hook hole of the truck floor. At this time, the tensioning shaft and the self-locking shaft are both located between the hinge shaft and the reversing shaft 1, and the tensioning shaft is located below the self-locking shaft. The other end of the strap is passed around the reversing shaft 1, the self-locking shaft and the tensioning shaft in sequence and then wrapped around the belt shaft. The belt shaft is rotated to pre-tighten the strap. During this process, rotating the belt shaft does not require much effort. The tensioning frame is then pushed to swing about the hinge shaft. Because the self-locking shaft, the tensioning shaft, and the hinge shaft are arranged parallel and triangularly, the self-locking shaft and the tensioning shaft can further wind and tension the pre-tensioned strap during the swinging process. When the tensioning frame is swung to the second position, the self-locking shaft is located below the tensioning shaft, and the tensioning shaft is located below the line connecting the hinge shaft and the reversing shaft 1, crossing the critical point bounded by the line connecting the hinge shaft and the reversing shaft 1. After the strap is tensioned, a component force always pulls the self-locking shaft and the tensioning shaft downward, preventing the tensioning frame from swinging back upward, achieving self-locking, and thus completing the wheel fixation. In other words, through the design of the above structure, the present application only needs to gently rotate the belt shaft to achieve pre-tensioning, and then forcefully push the tensioning frame downward to further tighten the strap and achieve self-locking, without having to laboriously rotate the belt shaft, making operation simple and labor-saving.

[0009] In the aforementioned wheel anchor, the bracket is provided with an arcuate locking groove concentrically arranged with the hinge axis. The two ends of the locking groove are located above and below the hinge axis, respectively. The self-locking shaft is inserted into the locking groove. When the tensioning frame swings to the first position, the self-locking shaft swings to the upper end of the locking groove. When the tensioning frame swings to the second position, the self-locking shaft swings to the lower end of the locking groove. The locking groove design stabilizes the swinging of the tensioning frame and prevents deflection. The concentric arrangement enables the swinging of the tensioning frame to smoothly drive the self-locking shaft along the locking groove to achieve tensioning and self-locking, making operation smoother and simpler. At the same time, the groove walls at both ends of the locking groove can be used for the self-locking shaft to rest on, that is, when the self-locking shaft rests on the upper groove wall of the locking groove, the tensioning frame is in the first position, and the belt shaft can be cooperated with to achieve pre-tensioning of the strap. When the self-locking shaft rests on the lower groove wall of the locking groove, the tensioning frame is in the second position. After the strap is tensioned, there is always a component force pulling the self-locking shaft and the tensioning shaft downward. The self-locking shaft is tightly pressed against the lower groove wall of the locking groove to achieve self-locking. There is no need to worry about swinging too much, making operation easier.

[0010] Preferably, in the aforementioned wheel retainer, the self-locking shaft, tensioning shaft, and hinge shaft are arranged in a right isosceles triangle, with the central angle of the locking groove being greater than 180°. This facilitates installation and improves uniformity. It also ensures that when the tensioning frame swings from the first position to the second position, the tensioning shaft can rewind the strap one more turn to achieve tensioning, allowing the self-locking shaft to further tighten the strap while simultaneously locking itself.

[0011] Preferably, in the wheel holder, the bracket is further provided with a second reversing shaft, and the first reversing shaft is located below the second reversing shaft. The design of the second reversing shaft enables the strap to exert greater tension on the tire.

[0012] In the aforementioned wheel locker, the outer diameter of the tensioning shaft is larger than that of the self-locking shaft, and the outer circumferential wall of the tensioning shaft has a friction pattern or particles. The larger outer diameter of the tensioning shaft provides a larger contact surface with the strap. Furthermore, the friction pattern or particles create friction between the tensioning shaft and the strap as it tensions the strap, further facilitating strap tightening and providing greater stability.

[0013] In the aforementioned wheel locker, a control handle is also connected to the tensioning frame or the self-locking shaft. The design of the control handle makes it easier to swing the tensioning frame upward to drive the tensioning shaft and the self-locking shaft to move together to tighten the strap and swing the self-locking shaft upward to achieve self-locking, which reduces the application of force and makes operation easier and more labor-saving.

[0014] In the aforementioned wheel locker, the operating handle comprises a Z-shaped handle portion and a plate-shaped connecting portion. The handle portion is fixed or integrally formed in the middle of the connecting portion and is sleeved onto the hinge shaft. One end of the connecting portion sleeves onto the end of the self-locking shaft. The aforementioned structural design of the operating handle creates a lever arm between the operating handle and the self-locking shaft, making downward swinging to tighten the strap much more labor-efficient.

[0015] Preferably, in the aforementioned wheel retainer, a friction member is provided between the belt shaft and the bracket to generate friction therebetween. The provision of the friction member creates a certain amount of frictional resistance between the belt shaft and the bracket, thereby ensuring that the belt shaft does not rotate after rotation during the pre-tensioning phase, providing a certain amount of pre-tensioning force. Furthermore, after pre-tensioning is completed, when the tensioning frame is pushed upward to tighten the strap, a certain amount of retraction and extension margin is provided, ensuring that the self-locking shaft can move into position and achieve self-locking.

[0016] Preferably, in the wheel retainer, friction members are sleeved on both ends of the belt shaft, and the friction members are circumferentially fixed to the belt shaft. Knob sleeves are also sleeved on both ends of the belt shaft, the friction member having a first one-way tooth, the knob sleeve having a second one-way tooth, and the belt shaft being sleeved with a spring, one end of the spring abutting the belt shaft and the other end abutting the knob sleeve, and under the elastic force of the spring, the second one-way tooth on the knob sleeve meshes with the first one-way tooth on the friction member. With the above arrangement, under normal conditions, the knob sleeve remains engaged with the friction member under the action of the elastic force, and rotating the knob sleeve can drive the friction member and the belt shaft to rotate together to pre-tighten the strap. If the knob sleeve is rotated too far with excessive force, the one-way structure and the spring will cause the knob sleeve and the friction member to slip, and the belt shaft will not continue to rotate, thereby avoiding over-tightening of the strap and affecting subsequent tensioning and self-locking operations.

[0017] In the aforementioned wheel anchor, hinged arms are fixed to both ends of the first reversing shaft, and the first reversing shaft is hingedly connected to the bracket via the hinged arms. The hook is hingedly connected to the first reversing shaft, and the middle portion of the bracket has a bent portion, so that the first reversing shaft can swing and rest against the bent portion. This arrangement further facilitates connection of the bracket to the truck floor, making operation more convenient.

[0018] Compared with the existing technology, this wheel fixer has the following advantages:

[0019] 1. During operation, you only need to gently turn the belt shaft to achieve pre-tightening, and then push the swing frame upwards to tighten the strap and achieve self-locking. There is no need to keep turning the belt shaft laboriously. The operation is simple and labor-saving.

[0020] 2. When the tensioning shaft tightens the strap, a friction force will be generated between itself and the strap, which will further help tighten the strap and provide better stability.

[0021] 3. The belt shaft is easy to operate during the pre-tightening stage, and the pre-tightening force is controllable. At the same time, after the pre-tightening is completed, the tensioning frame is pushed upward so that when the tensioning shaft tightens the strap, the belt shaft can reserve a certain amount of retraction and extension margin to ensure that the self-locking shaft can move into place to achieve self-locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the wheel retainer.

[0023] Figure 2 It is a cross-sectional view of the wheel retainer.

[0024] Figure 3 This is a cross-sectional view of the wheel retainer in a pre-tightened state when used to secure a wheel.

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0026] Figure 5 This is a cross-sectional view of the wheel retainer in a locked state when used to secure a wheel.

[0027] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0028] Figure 7 It is a three-dimensional image of the knob cover.

[0029] Figure 8 It is a three-dimensional diagram of the friction parts.

[0030] In the figure, 1. wheel; 2. bracket; 2a. locking groove; 3. strap; 4. reversing shaft 1; 5. reversing shaft 2; 6. belt shaft; 7. belt hook; 8. tensioning frame; 9. self-locking shaft; 10. tensioning shaft; 11. articulated shaft; 12. operating handle; 12a. handle part; 12b. connecting part; 13. friction part; 13a. one-way tooth 1; 14. knob sleeve; 14a. one-way tooth 2; 15. spring; 16. articulated arm; 17. hook. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0032] like Figure 1 、 3As shown in Figures 5 and 6 , the wheel retainer includes a bracket 2 and a strap 3. The bracket 2 has two side plates connected and fixed by a plurality of connecting columns. One side of the bracket 2 also has a contact plate for contacting the wheel 1. The bracket 2 is also provided with a reversing shaft 1 4, a reversing shaft 2 5, and a belt shaft 6. The reversing shaft 1 4 is located below the reversing shaft 2 5. Articulated arms 16 are fixed to both ends of the reversing shaft 1 4 and are hingedly connected to the bracket 2 via the articulated arms 16. A hook 17 is also hingedly connected to the reversing shaft 1 4. The bracket 2 has a bent portion in the middle, and the reversing shaft 1 4 can swing and rest against the bent portion.

[0033] A tensioning frame 8 is hingedly mounted on the bracket 2 and is capable of swinging relative to the bracket 2. The tensioning frame 8 includes two triangular plates, one of the corners of which is provided with a hinge shaft 11. The two triangular plates are hingedly mounted on the two side plates of the bracket 2 via the hinge shaft 11. The tensioning frame 8 is provided with a self-locking shaft 9 and a tensioning shaft 10. The self-locking shaft 9, the tensioning shaft 10, and the hinge shaft 11 are arranged in parallel. The self-locking shaft 9 and the tensioning shaft 10 are respectively arranged on the other two corners of the tensioning frame 8, forming a triangular distribution. The two ends of the tensioning shaft 10 are respectively fixed to the two triangular plates. The two side plates of the bracket 2 are also provided with an arc-shaped locking groove 2a. The locking groove 2a is arranged concentrically with the hinge shaft 11, and the two ends of the locking groove 2a are respectively located on the upper and lower sides of the hinge shaft 11. The two ends of the self-locking shaft 9 pass through the two triangular plates of the tensioning frame 8 and are arranged in the locking groove 2a. One end of the strap 3 has a hook 7. The other end of the strap 3 passes through reversing shaft 1 4, reversing shaft 2 5, self-locking shaft 9, and tensioning shaft 10, and then is wrapped around the strap shaft 6. In this example, the self-locking shaft 9, tensioning shaft 10, and hinge shaft 11 form a right isosceles triangle, and the central angle of the locking groove 2a is greater than 180°.

[0034] Specifically, if Figure 3-6 As shown, when the tensioning frame 8 swings relative to the bracket 2 to the first position, the self-locking shaft 9 is located at the upper end of the locking groove 2a, the tensioning shaft 10 and the self-locking shaft 9 are both located between the hinge shaft 11 and the reversing shaft 4, and the tensioning shaft 10 is located below the self-locking shaft 9. When the tensioning frame 8 swings relative to the bracket 2 to the second position, the self-locking shaft 9 is located at the lower end of the locking groove 2a, the tensioning shaft 10 is located below the line connecting the hinge shaft 11 and the reversing shaft 4, and the self-locking shaft 9 is located below the tensioning shaft 10. The outer diameter of the tensioning shaft 10 is larger than the outer diameter of the self-locking shaft 9, and the outer peripheral wall of the tensioning shaft 10 has friction patterns or particles.

[0035] like Figure 1 As shown, an operating handle 12 is further connected to the tensioning frame 8 or the self-locking shaft 9. In this embodiment, the operating handle 12 includes a Z-shaped handle portion 12a and a plate-shaped connecting portion 12b. The handle portion 12a is fixed or integrally formed with the middle portion of the connecting portion 12b and is sleeved on the hinge shaft 11. One end of the connecting portion 12b is sleeved on the end of the self-locking shaft 9.

[0036] Further, if Figure 2 、 7 As shown in FIG8 , a friction member 13 is provided between the belt shaft 6 and the bracket 2 to generate friction between the two. Friction members 13 are sleeved on both ends of the belt shaft 6, and the friction member 13 is circumferentially fixed to the belt shaft 6. Knob sleeves 14 are also sleeved on both ends of the belt shaft 6. The friction member 13 has a one-way tooth 13a, and the knob sleeve 14 has a one-way tooth 2 14a. A spring 15 is also sleeved on the belt shaft 6. Washers and locking nuts are also provided at both ends of the belt shaft 6. One end of the spring 15 rests on the washer of the belt shaft 6, and the other end rests on the knob sleeve 14. Under the elastic force of the spring 15, the one-way tooth 2 14a on the knob sleeve 14 engages with the one-way tooth 1 13a on the friction member 13, and presses the friction plate tightly against the corresponding side plate of the bracket 2.

[0037] When using this wheel fixer, pass the strap 3 around the wheel 1 and hook it on the hook 17 hole on the truck floor, then place the bracket 2 against the wheel 1 and fix it on the truck floor. First, turn the knob sleeve 14. The knob sleeve 14 drives the friction plate and the belt shaft 6 to overcome the friction force and rotate relative to the bracket 2 to pre-tighten the strap 3. The knob sleeve 14 and the friction member 13 cooperate with each other through the spring 15, the one-way tooth 13a and the one-way tooth 2 14a to avoid over-tightening. At this time, the tensioning frame 8 is in the first position, the self-locking shaft 9 is at the upper end of the locking groove 2a, the tensioning shaft 10 and the self-locking shaft 9 are both between the hinge shaft 11 and the reversing shaft 14, and the tensioning shaft 10 is below the self-locking shaft 9. The strap 3 remains in a pre-tightened state under the friction force between the friction plate and the bracket 2, as shown in FIG. Figure 3 and 4 As shown. Then, the tensioning frame 8 is pushed downward by the operating handle 12, so that the tensioning frame 8 swings to the second position relative to the bracket 2, that is, the self-locking shaft 9 swings to the lower end of the locking groove 2a. During the swinging process, the tensioning shaft and the self-locking shaft further wind and tension the strap 3. Since the tensioning frame 8 swings downward to the second position, the position of the tensioning shaft 10 exceeds the critical point with the line connecting the reversing shaft 4 and the hinge shaft 11 as the boundary, that is, the tensioning shaft 10 is located obliquely below the line connecting the reversing shaft 4 and the hinge shaft 11. At this time, the strap 3 remains in a tensioned state. After the strap 3 is tensioned, it always has a component force pulling the self-locking shaft 9 and the tensioning shaft 10 downward, so that the self-locking shaft 9 is pressed tightly against the inner wall of the lower end of the locking groove 2a, so that the tensioning frame 8 will not swing back upward, achieving self-locking, thereby completing the fixation of the wheel 1, as shown. Figure 5 and 6 That is to say, through the design of the above structure, when operating, the present application only needs to gently rotate the belt shaft 6 to achieve pre-tightening, and then push the swing frame downward to tighten the strap 3 and achieve self-locking. There is no need to keep laboriously rotating the belt shaft 6, which is easy to operate and labor-saving.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0039] Although this document frequently uses terms such as wheel 1, bracket 2, locking groove 2a, strap 3, reversing shaft 1 4, reversing shaft 2 5, belt shaft 6, belt hook 7, tensioning frame 8, self-locking shaft 9, tensioning shaft 10, articulated shaft 11, operating handle 12, handle portion 12a, connecting portion 12b, friction member 13, one-way tooth 1 13a, knob sleeve 14, one-way tooth 2 14a, spring 15, articulated arm 16, and hook 17, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations would be contrary to the spirit of the present invention.

Claims

1. A wheel holder, comprising a bracket (2) and a strap (3), wherein the bracket (2) is provided with a reversing shaft (4) and a strap shaft (6), one end of the strap (3) has a strap hook (7), the bracket (2) is provided with a hook (17), and the strap shaft (6) can be rotated and positioned relative to the bracket (2), characterized in that: The wheel holder further comprises a tensioning frame (8), the tensioning frame (8) being hinged to the bracket (2) via a hinge shaft (11), a self-locking shaft (9) and a tensioning shaft (10) being fixed to the tensioning frame (8), the self-locking shaft (9), the tensioning shaft (10) and the hinge shaft (11) being arranged in parallel and distributed in a triangular pattern, the other end of the strap (3) passing through the reversing shaft (4), the self-locking shaft (9) and the tensioning shaft (10) in sequence and then being wound around the strap shaft (6), when the tensioning frame ( 8) When the tensioning frame (8) swings around the hinge shaft (11) to the first position, the tensioning shaft (10) and the self-locking shaft (9) are both located between the hinge shaft (11) and the reversing shaft (4), and the tensioning shaft (10) is located below the self-locking shaft (9); when the tensioning frame (8) swings around the hinge shaft (11) to the second position, the tensioning shaft (10) is located below the line between the hinge shaft (11) and the reversing shaft (4), and the self-locking shaft (9) is located below the tensioning shaft (10).

2. The wheel holder according to claim 1, wherein: The bracket (2) is provided with a locking groove (2a) which is arc-shaped and arranged concentrically with the hinge shaft (11), and the two ends of the locking groove (2a) are respectively located on the upper and lower sides of the hinge shaft (11). The self-locking shaft (9) is inserted into the locking groove (2a), and when the tensioning frame (8) swings to the first position, the self-locking shaft (9) swings to the upper end of the locking groove (2a), and when the tensioning frame (8) swings to the second position, the self-locking shaft (9) swings to the lower end of the locking groove (2a).

3. The wheel holder according to claim 2, characterized in that: The self-locking shaft (9), the tensioning shaft (10) and the hinge shaft (11) are distributed in a right-angled isosceles triangle, and the central angle of the locking groove (2a) is greater than 180°.

4. The wheel holder according to claim 1, 2 or 3, characterized in that: The bracket (2) is also provided with a second reversing shaft (5), and the first reversing shaft (4) is located below the second reversing shaft (5).

5. The wheel holder according to claim 1, 2 or 3, characterized in that: The outer diameter of the tensioning shaft (10) is greater than the outer diameter of the self-locking shaft (9), and the outer peripheral wall of the tensioning shaft (10) is provided with friction patterns or particles.

6. The wheel holder according to claim 5, characterized in that: The tensioning frame (8) or the self-locking shaft (9) is also connected to an operating handle (12).

7. The wheel holder according to claim 6, characterized in that: The operating handle (12) comprises a Z-shaped handle portion (12a) and a plate-shaped connecting portion (12b); the handle portion (12a) is fixed or integrally formed in the middle of the connecting portion (12b) and sleeved on the hinge shaft (11); one end of the connecting portion (12b) is sleeved on the end of the self-locking shaft (9).

8. The wheel holder according to claim 1, 2 or 3, characterized in that: A friction member (13) is also provided between the belt shaft (6) and the bracket (2) to generate friction between the two.

9. The wheel holder according to claim 8, characterized in that Both ends of the belt shaft (6) are sleeved with friction members (13), and the friction members (13) are circumferentially fixed to the belt shaft (6). Both ends of the belt shaft (6) are also sleeved with knob sleeves (14), the friction member (13) has a one-way tooth 1 (13a), the knob sleeve (14) has a one-way tooth 2 (14a), and the belt shaft (6) is also sleeved with a spring (15), one end of the spring (15) rests on the belt shaft (6), and the other end rests on the knob sleeve (14), and under the elastic force of the spring (15), the one-way tooth 2 (14a) on the knob sleeve (14) is meshed with the one-way tooth 1 (13a) on the friction member (13).

10. The wheel holder according to claim 1, 2 or 3, characterized in that: The two ends of the reversing shaft (4) are fixed with hinged arms (16), and the reversing shaft (4) is hinged to the bracket (2) through the hinged arms (16). The hook (17) is hinged to the reversing shaft (4). The middle part of the bracket (2) has a bending portion, and the reversing shaft (4) can swing and abut against the bending portion.

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