Driving locking structure of wheel fixer

Abstract

The utility model provides a driving locking structure of a wheel fixator, and belongs to the technical field of wheel fixers. The problem that an existing wheel fixator is high in cost is solved. The wheel fixator comprises a bottom frame and two right-angle-shaped swing arms, and the bottom ends of the two swing arms are hinged to the bottom frame. The driving locking structure comprises a rotating shaft, a first transmission plate, a ratchet wheel, a second transmission plate, a third transmission plate and a pawl, the rotating shaft is axially positioned and circumferentially and rotatably arranged in the bottom frame in a penetrating manner, the first transmission plate and the ratchet wheel are fixedly connected to the rotating shaft in a sleeving manner, one end of the pawl is hinged to the bottom frame, and the rotating shaft is positioned between the two swinging arms; the two ends of the first transmission plate are hinged to the bottom ends of the two swing arms through the second transmission plate and the third transmission plate correspondingly, and the other end of the pawl abuts against the ratchet wheel. The driving locking structure of 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 wheel fixer, and relates to a driving locking structure of wheel fixer. BACKGROUND

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

[0003] In view of the above problems, people have made various improvements, and 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 has a first guide groove arranged in the vertical direction, the support frame is provided with a lifting plate which is connected with the first guide groove in a sliding manner, the support frame is connected with a driving mechanism which can drive the lifting plate to move up and down, the support frame is provided with two symmetrical swing arms which can swing up and down at the same time, one end of the two swing arms is hinged to the support frame, and the two clamping arms are arranged vertically on 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 uses an oil cylinder as the driving mechanism, the piston rod of the oil cylinder is connected to the two swing arms through an intermediate connecting piece and a lifting plate, the two swing arms are moved upward and unfolded by the extension of the piston rod of the oil cylinder, the wheels 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 wheels will not be hindered to open to the fixed position. However, the wheel fixing device with the above structure uses an oil cylinder with high cost, the support frame, the lifting plate and the two swing arms are all protruding and have large volumes, resulting in high cost of the wheel fixing device with the above structure. SUMMARY

[0005] The utility model aims at the above problems existing in the prior art, and provides a driving locking structure of wheel fixer, which solves the technical problem of how to reduce the cost and ensure the fixing effect.

[0006] The utility model discloses a drive locking structure of a wheel fixer, which comprises a chassis and two swing arms in a right angle, the bottom ends of the two swing arms are hingedly connected to the chassis, and the drive locking structure comprises a rotating shaft arranged in the chassis and capable of rotating in the axial direction and rotating in the circumferential direction, a first transmission plate and a ratchet wheel arranged on the rotating shaft, a second transmission plate, a third transmission plate and a pawl hingedly connected to the chassis at one end, the rotating shaft is located between the two swing arms, the two ends of the first transmission plate are hingedly connected to the bottom ends of the two swing arms through the second transmission plate and the third transmission plate, and the other end of the pawl abuts against the ratchet wheel.

[0007] When loading the vehicle, the operator rotates the rotating shaft, the rotating shaft rotates to drive the two swing arms to simultaneously move inward and close to the wheel through the second transmission plate and the third transmission plate, the swing arms abut against the wheel, the combination of the ratchet wheel and the pawl enables the rotating shaft to rotate in only one direction, the swing arms cannot be loosened due to the ratchet wheel and the pawl, and the wheel is locked and positioned.

[0008] In the drive locking structure of the wheel fixer, the bottom ends of the two swing arms are bent outward to form obtuse angles, the swing arms are hingedly connected to the chassis at the corners of the bottom ends, and the second transmission plate and the third transmission plate are hingedly connected to the ends of the bottom ends of the two swing arms. The swing arm has the structure, which is equivalent to increasing the swing angle of the swing arm, so that the overall transmission structure can be relatively small, and the cost is reduced.

[0009] In the drive locking structure of the wheel fixer, two hinge shafts are hingedly arranged in the chassis, the bottom ends of the two swing arms are fixedly connected to the two hinge shafts, the two hinge shafts are parallel to the rotating shaft, and the rotating shaft is located in the middle of the two hinge shafts. The structure enables the swing arms to rotate smoothly and makes the chassis have sufficient strength at the position, so that the fixing effect of the wheel is ensured.

[0010] As another case, in the above-mentioned drive locking structure of the vehicle wheel fixer, two hinge shafts are fixed in the chassis, the bottom ends of the two swing arms are respectively hinged to 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 chassis has sufficient strength at this position, ensuring the fixing effect of the vehicle wheel.

[0011] In the above-mentioned drive locking structure of the vehicle wheel fixer, the outer end of the rotating shaft is fixed with a rotating disc, the rotating disc is located outside the chassis, the ratchet wheel and the pawl are located between the rotating disc and the chassis, and a plurality of rotating tubes are arranged at equal intervals on the rotating disc and in the radial direction of the rotating disc. This structure makes the ratchet wheel and the pawl not easily disturbed by the outside world, reasonably utilizes the space, and provides the rotating rod with the rotating tube for penetration. The rotating shaft can be rotated by using the lever principle, the swing arm rotates smoothly, and the cost is low compared with the oil cylinder.

[0012] In the above-mentioned drive locking structure of the vehicle wheel fixer, the first transmission plate, the second transmission plate and the third transmission plate are located in the chassis and are arranged close to the inner side wall of the chassis. This structure avoids the contact between the first transmission plate, the second transmission plate and the third transmission plate and other parts as much as possible, and makes the drive locking structure stable.

[0013] In the above-mentioned drive locking structure of the vehicle wheel fixer, the cross section of the rotating shaft is a regular polygon. This structure ensures the circumferential rotation of the rotating shaft, and the rotating shaft does not have the problem of slipping.

[0014] Compared with the prior art, the drive locking structure of the vehicle wheel fixer has the following advantages:

[0015] 1. The swing arm of the vehicle wheel fixer is directly hinged to the chassis, without the need to set a support frame, and the oil cylinder is not used for driving. The ratchet wheel and the pawl are mature technologies, and the cost is low, thereby reducing the cost. After the swing arm is locked by the ratchet wheel and the pawl, the swing arm will not be loosened in the reverse direction, and the fixing effect of the vehicle wheel is ensured.

[0016] 2. The vehicle wheel fixer realizes one-way locking through the ratchet wheel and the pawl, and realizes rotation through the rotating disc. The structure is simple, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a partial structure schematic view of the drive locking structure.

[0018] Figure 2 is a state diagram of the swing arm of the vehicle wheel fixer standing up and an enlarged view of the partial structure of the drive locking structure.

[0019] Figure 3 is the state diagram when the car wheel fixer swing arm is laid flat.

[0020] In the figure, 1, the chassis; 2, the swing arm; 3, the rotating shaft; 4, the first transmission plate; 5, the ratchet wheel; 6, the second transmission plate; 7, the third transmission plate; 8, the pawl; 9, the hinged shaft; 10, the rotating disc; 11, the rotating tube. DETAILED DESCRIPTION

[0021] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0022] As shown in Figure 1 , Figure 2 , Figure 3 , the car wheel fixer includes a chassis 1, a swing arm 2 and a driving locking structure, the driving locking structure includes a rotating shaft 3, a first transmission plate 4, a ratchet wheel 5, a second transmission plate 6, a third transmission plate 7, a pawl 8, a hinged shaft 9, a rotating disc 10 and a rotating tube 11.

[0023] The swing arm 2 is in a right angle shape, and the number is two. The bottom ends of the two swing arms 2 are hingedly connected to the chassis 1. Specifically, the bottom ends of the two swing arms 2 are outwardly bent to be in an obtuse angle shape. In this embodiment, two hinged shafts 9 are hingedly connected in the chassis 1, and the corners of the bottom ends of the two swing arms 2 are respectively fixedly connected to the two hinged shafts 9. The two hinged shafts 9 are parallel to the rotating shaft 3, and the rotating shaft 3 is located in the middle of the two hinged shafts 9. In actual production, two hinged shafts 9 are fixedly connected in the chassis 1, and the corners of the bottom ends of the two swing arms 2 are respectively hingedly connected to the two hinged shafts 9. The two hinged shafts 9 are parallel to the rotating shaft 3, and the rotating shaft 3 is located in the middle of the two hinged shafts 9.

[0024] The cross section of the rotating shaft 3 is a regular polygon. The rotating shaft 3 is axially positioned and circumferentially rotatable in the chassis 1, and the rotating shaft 3 is located between the two swing arms 2. The first transmission plate 4 is sleeved and fixedly connected to the rotating shaft 3. The two ends of the first transmission plate 4 are hingedly connected to the ends of the bottom ends of the two swing arms 2 through the second transmission plate 6 and the third transmission plate 7. The first transmission plate 4, the second transmission plate 6 and the third transmission plate 7 are located in the chassis 1 and are arranged close to the inner side wall of the chassis 1. The ratchet wheel 5 is sleeved and fixedly connected to the rotating shaft 3. One end of the pawl 8 is hingedly connected to the chassis 1, and the other end of the pawl 8 abuts against the ratchet wheel 5.

[0025] The outer end of the rotating shaft 3 is fixedly connected with the rotating disc 10, the rotating disc 10 is located outside the chassis 1, and the ratchet wheel 5 and the pawl 8 are located between the rotating disc 10 and the chassis 1. In this embodiment, six rotating tubes 11 are equally spaced 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 four or eight.

[0026] When loading the vehicle, the rotating rod is inserted into the rotating tube 11, and by using the principle of lever, a certain external force is applied to make the rotating disc 10 rotate, so as to make the rotating shaft 3 rotate, and through the first transmission plate 4, the second transmission plate 6 and the third transmission plate 7, the two swing arms 2 are driven to simultaneously move inward to approach the wheels, and through the locking of the ratchet 5 and the pawl 8, the wheels are positioned. When unloading the vehicle, the pawl 8 is pushed away, so that the ratchet 5 is no longer locked, and the two swing arms 2 simultaneously move outward to move away from the wheels, so that the unloading of the vehicle can be realized.

[0027] 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.

[0028] Although the terms such as chassis 1, swing arm 2, rotating shaft 3, first transmission plate 4, ratchet 5, second transmission plate 6, third transmission plate 7, pawl 8, hinged shaft 9, rotating disc 10, rotating tube 11 and the like are used more frequently herein, but the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present application; any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A drive locking structure for a wheel retainer, the wheel retainer comprising a base frame (1) and two right-angled swing arms (2), the bottom ends of both swing arms (2) being hinged to the base frame (1), characterized in that, The drive locking structure includes an axially positioned and circumferentially rotatable rotating shaft (3) passing through the base frame (1), a first transmission plate (4) and a ratchet (5), a second transmission plate (6), a third transmission plate (7) sleeved and fixed to the rotating shaft (3), and a pawl (8) with one end hinged to the base frame (1). The rotating shaft (3) is located between the two swing arms (2). The two ends of the first transmission plate (4) are hinged to the bottom ends of the two swing arms (2) respectively through the second transmission plate (6) and the third transmission plate (7). The other end of the pawl (8) abuts against the ratchet (5).

2. The drive locking structure for a wheel retainer according to claim 1, characterized in that, The bottom ends of both swing arms (2) are bent outward at obtuse angles. The corner of the bottom end of the swing arm (2) is hinged to the base frame (1). The second transmission plate (6) and the third transmission plate (7) are respectively hinged to the ends of the bottom ends of the two swing arms (2).

3. The drive locking structure for a wheel retainer according to claim 1 or 2, characterized in that, The base frame (1) is hinged with two hinge shafts (9). The bottom ends of the two swing arms (2) are respectively fixed to the two hinge shafts (9). The two hinge shafts (9) are parallel to the rotating shaft (3). The rotating shaft (3) is located in the middle of the two hinge shafts (9).

4. The drive locking structure of a wheel retainer according to claim 1 or 2, characterized in that, Two hinge shafts (9) are fixedly connected in the base frame (1). The bottom ends of the two swing arms (2) are respectively hinged to the two hinge shafts (9). The two hinge shafts (9) are parallel to the rotating shaft (3). The rotating shaft (3) is located in the middle of the two hinge shafts (9).

5. The drive locking structure for a wheel retainer according to claim 1 or 2, characterized in that, The outer end of the rotating shaft (3) is fixedly connected to a rotating disk (10). The rotating disk (10) is located outside the base frame (1). The ratchet (5) and the pawl (8) are located between the rotating disk (10) and the base frame (1). A plurality of rotating tubes (11) are equally spaced on the rotating disk (10). The rotating tubes (11) are arranged radially along the rotating disk (10).

6. The drive locking structure for a wheel retainer according to claim 1 or 2, characterized in that, The first transmission plate (4), the second transmission plate (6) and the third transmission plate (7) are all located in the base frame (1) and are set against the inner side wall of the base frame (1).

7. The drive locking structure of a wheel retainer according to claim 1 or 2, characterized in that, The cross-section of the rotating shaft (3) is a regular polygon.

Images