Wheel fixer

Abstract

The utility model provides a wheel fixator, and belongs to the technical field of fixers. The problem that an existing fixator is high in cost is solved. The wheel fixator comprises a bottom frame, two right-angle-shaped swing arms, a rotating shaft, a one-way locking structure and a transmission structure, a positioning plate is fixedly connected to the bottom frame, the middle of the positioning plate is concaved downwards to form a positioning groove, the bottom ends of the swing arms are hinged to the bottom frame, the rotating shaft is axially positioned and circumferentially and rotatably arranged in the bottom frame in a penetrating mode, and the transmission structure is arranged on the rotating shaft. The rotating shaft is located under the center of the positioning groove, a concave containing groove is formed in the side portion of the bottom frame, the one-way locking structure is located in the containing groove, the one-way locking structure is arranged between the rotating shaft and the bottom frame and enables the rotating shaft to rotate in a one-way mode, and the rotating shaft is connected with the bottom ends of the two swing arms through a transmission structure. And the rotating shaft rotates to drive the two swinging arms to simultaneously inwards get close to the wheels or simultaneously outwards get away from the wheels through the transmission structure. The wheel fixer has the advantages of reducing the cost and ensuring the fixing effect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fixer relates to a wheel fixer. BACKGROUND

[0002] The board car is a special transport tool for transporting passenger cars, in order to ensure the stability of the passenger car during transportation, the wheel needs to be fixed after the passenger car is parked on the board car, the traditional fixing method is to use a safety belt or a rope to fix the wheel, but there are problems such as trouble and poor fixing.

[0003] In view of the above problems, people make various improvements, some have also applied for patents, for example, the Chinese patent document discloses a wheel fixing device for passenger car loading and transportation [patent number: 202420454439.0; application publication number: CN222246998U], which comprises a chassis and two clamping arms, a support frame is arranged on the chassis, the support frame is provided with a first guide groove arranged in the vertical direction, the support frame is provided with a lifting plate slidably connected with the first guide groove, the support frame is connected with a driving mechanism capable of driving the lifting plate to move up and down, the support frame is provided with two symmetrical swing arms capable of swinging up and down at the same time, one end of the two swing arms is hinged to the support frame, two clamping arms are respectively arranged vertically at the other end of the two swing arms, the two swing arms are movably connected to the lifting plate, and the two swing arms can swing up and down synchronously with the movement of the lifting plate.

[0004] The wheel fixing device with the above structure, the driving mechanism is an oil cylinder, the piston rod of the oil cylinder is connected with the two swing arms through the intermediate connecting piece and the lifting plate, the two swing arms are moved upward and unfolded by the extension of the piston rod of the oil cylinder, the wheel can be clamped and positioned, the two swing arms are moved downward and folded by the retraction of the piston rod of the oil cylinder, and the wheel of the automobile cannot be blocked to the fixed position. However, the wheel fixing device with the above structure uses the oil cylinder with high cost, the support frame, the lifting plate and the two swing arms are all protruding, and the volume is large, so that the cost of the wheel fixing device with the above structure is high. SUMMARY

[0005] The utility model discloses a wheel fixer, which solves the technical problem of how to reduce the cost and ensure the fixing effect.

[0006] The utility model discloses a wheel fixer, including the chassis and two straight angle shape's swing arm, be firmly connected with the positioning plate on the chassis, the middle of positioning plate is concave and is set down and forms the positioning slot for the wheel positioning, its characterized in that, the wheel fixer still includes rotating shaft, one -way locking structure and transmission structure, two swing arm's bottom end all with the chassis are hinged, the rotating shaft axial positioning circumferentially rotatable is arranged in the chassis, the rotating shaft is located the direct below of positioning slot center, the side of chassis has the recessed setting containing groove, one -way locking structure is located in containing groove, one -way locking structure sets up between rotating shaft and chassis and can make rotating shaft one -way rotation, rotating shaft passes through transmission structure and two swing arm's bottom end all are connected, and rotating shaft rotation can drive two swing arm through transmission structure and simultaneously approach the wheel or simultaneously move away the wheel outward.

[0007] When loading the vehicle, the vehicle drives to the set position, the wheel is embedded into the positioning slot of the positioning plate, the wheel is positioned, then the operator rotates the rotating shaft, the rotating shaft rotates and drives two swing arms to simultaneously approach the wheel inward through the transmission structure, so that the swing arms abut against the wheel, the one-way locking structure makes the rotating shaft only rotate in one direction, and the one-way locking structure makes the swing arms not loose, and the wheel is locked and positioned.

[0008] In the above-mentioned wheel fixer, the bottom end of each of the two swing arms is outwardly bent to form an obtuse angle, the corner of the bottom end of the swing arm is hinged to the chassis, and the end of the bottom end of the swing arm is hinged to the transmission structure. The swing arm has this structure, which is equivalent to increasing the swing angle of the swing arm, so that the whole transmission structure can be relatively small, thereby reducing the cost.

[0009] In the above-mentioned wheel fixer, the transmission structure includes first, second and third transmission plates each in the shape of a long strip, the first transmission plate is sleeved and fixedly connected to the rotating shaft, and the ends of the first transmission plate are hinged to the ends of the bottom ends of the two swing arms through the second and third transmission plates. This structure has few transmission structure parts, simple structure and low cost, and in actual production, the transmission structure can be provided with more transmission plates hinged to the chassis to prolong the transmission path.

[0010] In the above-mentioned wheel fixer, two hinge shafts are hingedly connected in the base frame, the bottom ends of the two swing arms are respectively fixedly connected with the two hinge shafts, the two hinge shafts are parallel to the rotating shaft, and the rotating shaft is located at the middle of the two hinge shafts. This structure makes the swing arm rotate smoothly while the base frame has sufficient strength at this position, ensuring the fixing effect of the wheel.

[0011] As another case, in the above-mentioned wheel fixer, two hinge shafts are fixedly connected in the base frame, the bottom ends of the two swing arms are respectively hingedly connected with the two hinge shafts, the two hinge shafts are parallel to the rotating shaft, and the rotating shaft is located at the middle of the two hinge shafts. This structure makes the swing arm rotate smoothly while the base frame has sufficient strength at this position, ensuring the fixing effect of the wheel.

[0012] In the above-mentioned wheel fixer, the outer end of the rotating shaft is fixedly connected with a rotating disc, the rotating disc is located outside the base frame, the one-way locking structure is located between the rotating disc and the base frame, a plurality of rotating tubes are equidistantly arranged on the rotating disc, and the rotating tubes are arranged along the radial direction of the rotating disc. The position of the one-way locking structure makes the one-way locking structure not easily disturbed by the outside world, reasonably utilizes the space, and the rotating tubes are provided for the rotating rod to pass through, which can rotate the rotating shaft by using the lever principle to make the swing arm rotate smoothly, and the cost is low relative to the oil cylinder.

[0013] In the above-mentioned wheel fixer, the rotating disc is located in the accommodating groove. The arrangement of the accommodating groove makes the rotating disc not protrude outward, and reasonably utilizes the space.

[0014] In the above-mentioned wheel fixer, the one-way locking structure includes a ratchet wheel and a pawl, the ratchet wheel is sleeved and fixed at the outer end of the rotating shaft, one end of the pawl is hingedly connected with the base frame, and the other end abuts against the ratchet wheel. The ratchet wheel and the pawl are the most common one-way locking structure, which is cheap, so as to reduce the cost of the wheel fixer. In actual production, the one-way locking structure can also use the wedge effect of the taper head and the sleeve to realize self-locking by converting the axial force into the radial expansion force.

[0015] In the above-mentioned wheel fixer, the swing arm includes a swing arm and a clamping arm, the clamping arm is perpendicularly and fixedly connected with the top end of the swing arm, the bottom end of the swing arm is hingedly connected with the base frame, a support plate in the form of a flat plate is fixedly connected to the clamping arm, the support plate can abut against the wheel, and the support plate can be located in the gap between the two ends of the positioning plate and the base frame. The arrangement of the support plate can increase the contact area with the wheel, improve the firmness of the positioned wheel, make the base frame more flat, make the wheel travel stably, and make the wheel better enter the positioning groove.

[0016] In the above-mentioned wheel fixer, a plurality of fixing plates in strip shape are fixed on the base frame, the positioning plate is fixed on the fixing plates, the fixing plates are perpendicular to the clamping arms, the two ends of the fixing plates are respectively located in the gaps between the two ends of the positioning plate and the base frame, the two ends of the fixing plates are provided with concave support grooves, and the clamping arms can be partially embedded in the support grooves. The fixing plates play a supporting role, improve the stability of the positioning plate, and thus improve the stability of the wheel fixer. The support grooves are provided for embedding the clamping arms, so that the support plates do not exist in the protruding condition, and the wheel runs stably.

[0017] Compared with the prior art, the wheel fixer has the following advantages:

[0018] 1. The swing arm of the wheel fixer is directly hinged to the base frame, without the need to set a support frame, and also without the need to drive by an oil cylinder, so that the cost is reduced, and after the swing arm is locked to lock the wheel through the one-way locking structure, the swing arm will not be loosened in the reverse direction, so that the fixing effect of the wheel is ensured.

[0019] 2. The wheel fixer realizes one-way locking through a ratchet and a pawl, and realizes rotation through a rotating disc, so that the structure is simple and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a state diagram of the wheel fixer when fixing a vehicle.

[0021] Figure 2 is a state diagram of the swing arm of the wheel fixer when being retracted and an enlarged view of the rotating disc.

[0022] Figure 3 is a state diagram of the swing arm of the wheel fixer when being opened.

[0023] Figure 4 is a whole structure schematic diagram of the transmission structure of the wheel fixer.

[0024] In the drawings, 1 is a base frame, 2 is a swing arm, 21 is a swing arm, 22 is a clamping arm, 23 is a support plate, 3 is a positioning plate, 4 is a wheel, 5 is a positioning groove, 6 is a rotating shaft, 7 is a one-way locking structure, 71 is a ratchet, 72 is a pawl, 8 is a transmission structure, 81 is a first transmission plate, 82 is a second transmission plate, 83 is a third transmission plate, 9 is a hinge shaft, 10 is a rotating disc, 11 is a rotating tube, 12 is a containing groove, 13 is a fixing plate, and 131 is a support groove. DETAILED DESCRIPTION

[0025] The following is a specific embodiment of the utility model and is further described in combination with the drawings, but the utility model is not limited to these embodiments.

[0026] As Figure 1 , Figure 2 , Figure 3 illustrated, the vehicle wheel fixator comprises a chassis 1, a swing arm 2, a positioning plate 3, a rotating shaft 6, a one-way locking structure 7, a transmission structure 8, a hinged shaft 9, a rotating disc 10, a rotating tube 11 and a fixing plate 13.

[0027] The swing arm 2 is in a right angle shape, and comprises a swing arm 21 and a clamping arm 22, the clamping arm 22 is vertically fixedly connected to the top end of the swing arm 21, and a support plate 23 in a flat plate shape is fixedly connected to the clamping arm 22. The rotating shaft 6 is axially positioned and circumferentially rotatable through the chassis 1. In this embodiment, two hinged shafts 9 are hinged in the chassis 1, the bottom ends of the two swing arms 21 are fixedly connected to the two hinged shafts 9 respectively, the two hinged shafts 9 are parallel to the rotating shaft 6, and the rotating shaft 6 is located at the middle of the two hinged shafts 9. In actual production, two hinged shafts 9 are fixedly connected in the chassis 1, the bottom ends of the two swing arms 21 are hingedly connected to the two hinged shafts 9 respectively, the two hinged shafts 9 are parallel to the rotating shaft 6, and the rotating shaft 6 is located at the middle of the two hinged shafts 9.

[0028] The outer end of the rotating shaft 6 is fixedly connected with the rotating disc 10, the rotating disc 10 is located outside the chassis 1, the one-way locking structure 7 is located between the rotating disc 10 and the chassis 1, and the one-way locking structure 7 is arranged between the rotating shaft 6 and the chassis 1 to enable the rotating shaft 6 to rotate in one direction. In this embodiment, six rotating tubes 11 are arranged at equal intervals on the rotating disc 10, and the rotating tubes 11 are arranged along the radial direction of the rotating disc 10. In actual production, the number of rotating tubes 11 can be three or eight. The side of the chassis 1 has a recessed accommodating groove 12, and the one-way locking structure 7 and the rotating disc 10 are located in the accommodating groove 12. The one-way locking structure 7 comprises a ratchet wheel 71 and a pawl 72, the ratchet wheel 71 is sleeved and fixed on the outer end of the rotating shaft 6, one end of the pawl 72 is hingedly connected to the chassis 1, and the other end abuts against the ratchet wheel 71.

[0029] As Figure 4 illustrated, the bottom ends of the two swing arms 2 are outwardly bent to be obtuse-angled, and the corners of the bottom ends of the swing arms 2 are hingedly connected to the chassis 1. The transmission structure 8 comprises first, second and third transmission plates 81, 82 and 83 which are all in a strip shape, the first transmission plate 81 is sleeved and fixedly connected to the rotating shaft 6, and the two ends of the first transmission plate 81 are hingedly connected to the end portions of the bottom ends of the two swing arms 21 through the second and third transmission plates 82 and 83 respectively.

[0030] The positioning plate 3 is fixed on the chassis 1, the middle of the positioning plate 3 is concave downward to form a positioning groove 5 for positioning the wheel 4, and the rotating shaft 6 is located directly below the center of the positioning groove 5. Two long fixed plates 13 are fixed on the chassis 1, the positioning plate 3 is fixed on the fixed plates 13, the fixed plates 13 are perpendicular to the clamping arms 22, the two ends of the fixed plates 13 are respectively located in the gaps between the two ends of the positioning plate 3 and the chassis 1, and the two ends of the fixed plates 13 are provided with concave support grooves 131, and the clamping arms 22 can be partially embedded in the support grooves 131.

[0031] When loading the vehicle, the rotating rod is inserted into the rotating pipe 11, a certain external force is applied by using the lever principle to rotate the rotating disc 10, so as to rotate the rotating shaft 6, drive the two swing arms 2 to simultaneously move inward to the wheel 4 through the transmission structure 8, make the support plates 23 abut on the wheel 4, and position the wheel 4 through the locking of the ratchet wheel 71 and the pawl 72. When unloading the vehicle, the pawl 72 is pushed away, the ratchet wheel 71 is no longer locked, the two swing arms 2 simultaneously move outward away from the wheel 4, and the support plates 23 are located in the gaps between the two ends of the positioning plate 3 and the chassis 1, so that the wheel 4 can be raised and lowered.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0033] Although the terms such as chassis 1, swing arm 2, swing arm 21, clamping arm 22, support plate 23, positioning plate 3, wheel 4, positioning groove 5, rotating shaft 6, one-way locking structure 7, ratchet wheel 71, pawl 72, transmission structure 8, first transmission plate 81, second transmission plate 82, third transmission plate 83, hinged shaft 9, rotating disc 10, rotating pipe 11, containing groove 12, fixed plate 13 and support groove 131 are used more in this paper, but the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present application; any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A wheel fixture comprising a base frame (1) and two right-angled swing arms (2), a positioning plate (3) is fixed on the base frame (1), the middle of the positioning plate (3) is concave downward to form a positioning groove (5) for positioning a wheel (4), characterized in that, The wheel fixer further comprises a rotating shaft (6), a one-way locking structure (7) and a transmission structure (8), the bottom end of each of the two swing arms (2) is hingedly connected with the chassis (1), the rotating shaft (6) is axially positioned and circumferentially rotatable through the chassis (1), the rotating shaft (6) is located directly below the center of the positioning groove (5), the side of the chassis (1) is provided with a recessed accommodating groove (12), the one-way locking structure (7) is located in the accommodating groove (12), the one-way locking structure (7) is arranged between the rotating shaft (6) and the chassis (1) and enables the rotating shaft (6) to rotate in one direction, the rotating shaft (6) is connected with the bottom end of each of the two swing arms (2) through the transmission structure (8), and the rotation of the rotating shaft (6) can drive the two swing arms (2) to simultaneously move inward to approach the wheel (4) or simultaneously move outward to move away from the wheel (4) through the transmission structure (8).

2. A wheel holder according to claim 1, characterized in that The bottom end of each of the two swing arms (2) is outwardly bent to be obtuse-angled, the corner of the bottom end of the swing arm (2) is hingedly connected with the chassis (1), and the end of the bottom end of the swing arm (2) is hingedly connected with the transmission structure (8).

3. A wheel holder according to claim 2, characterized in that The transmission structure (8) comprises first, second and third transmission plates (81, 82 and 83) each in the shape of a long strip, the first transmission plate (81) is sleeved and fixed on the rotating shaft (6), and the two ends of the first transmission plate (81) are hingedly connected with the ends of the bottom ends of the two swing arms (2) through the second and third transmission plates (82 and 83).

4. A wheel fixture according to claim 1 or 2 or 3, characterized in that The chassis (1) is hingedly connected with two hinge shafts (9), the bottom end of each of the two swing arms (2) is fixedly connected with a hinge shaft (9), the two hinge shafts (9) are parallel to the rotating shaft (6), and the rotating shaft (6) is located at the middle of the two hinge shafts (9).

5. A wheel fixture according to claim 1 or 2 or 3, characterized in that The chassis (1) is hingedly connected with two hinge shafts (9), the bottom end of each of the two swing arms (2) is hingedly connected with a hinge shaft (9), the two hinge shafts (9) are parallel to the rotating shaft (6), and the rotating shaft (6) is located at the middle of the two hinge shafts (9).

6. A wheel fixture according to claim 1 or 2 or 3, characterized in that The outer end of the rotating shaft (6) is fixedly connected with a rotating disc (10), the rotating disc (10) is located outside the chassis (1), the one-way locking structure (7) is located between the rotating disc (10) and the chassis (1), a plurality of rotating tubes (11) are equidistantly arranged on the rotating disc (10), and the rotating tubes (11) are arranged along the radial direction of the rotating disc (10).

7. A wheel fixture according to claim 6, wherein The rotating disc (10) is located in the accommodating groove (12).

8. A wheel fixture according to claim 1 or 2 or 3, characterized in that The one-way locking structure (7) comprises a ratchet wheel (71) and a pawl (72), the ratchet wheel (71) is sleeved and fixed at the outer end of the rotating shaft (6), one end of the pawl (72) is hingedly connected with the chassis (1), and the other end abuts against the ratchet wheel (71).

9. A wheel fixture according to claim 1 or 2 or 3, characterized in that The swing arm (2) comprises a swing arm (21) and a clamping arm (22), the clamping arm (22) is vertically fixed to the top end of the swing arm (21), the bottom end of the swing arm (21) is hinged to the chassis (1), the clamping arm (22) is fixed with a flat support plate (23), the support plate (23) can abut against the wheel (4), and the support plate (23) can be located in the gap between the two ends of the positioning plate (3) and the chassis (1).

10. A wheel fixture according to claim 9, wherein A plurality of long strip-shaped fixed plates (13) are fixed on the chassis (1), the positioning plate (3) is fixed on the fixed plate (13), the fixed plate (13) is perpendicular to the clamping arm (22), the two ends of the fixed plate (13) are respectively located in the gap between the two ends of the positioning plate (3) and the chassis (1), and the two ends of the fixed plate (13) are both provided with recessed support grooves (131), and the clamping arm (22) can be partially embedded in the support grooves (131).

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