Special vehicle spare tire retracting and releasing device

Abstract

The utility model belongs to the technical field of automobile chassis spare tire carriers, and particularly relates to a special vehicle spare tire collecting and releasing device which comprises a stand column, a pin shaft is fixedly connected to the top of the stand column, a first connecting rod is rotationally connected to the outer side of the pin shaft, and a connecting ball is fixedly connected to the end face of the first connecting rod. The side face of the connecting ball is rotationally connected with a crank rod, the side face of the L-shaped base plate is fixedly connected with a positioning block, the end face of the positioning block is fixedly connected with a stabilizing seat, the stabilizing seat is rotationally connected with a supporting ball through an inserting shaft, and the outer side face of the supporting ball is fixedly connected with a second connecting rod. The end face of a second connecting rod is fixedly connected with the other side of a crank rod, the crank rod is rotationally connected with a connecting ball, rotation of a ball body and the crank rod can be transmitted to a stand column, a tire rotates at any angle, and the requirement for flexible tire replacement is better met; and overlarge noise during tire replacement is also reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of spare tire racks for vehicle chassis, and particularly relates to a spare tire retracting and extending device for special vehicles. Background Technique

[0002] Due to space layout limitations, most special vehicles are arranged horizontally or vertically at the rear side of the vehicle cab. Since the tires of special vehicles are large and the total weight of the tire and the wheel rim exceeds 200 kg, it is impossible to place it on the vehicle from the ground by manpower alone, and it is impossible for only the driver to remove it from the vehicle when replacing.

[0003] Most of the existing spare tire mechanisms are general mechanisms, equipped with independent fixing frames, flipping frames and fixing blocks. The structure is complex and cumbersome, taking up too much space, and the cooperation of each component is not flexible enough, which is not conducive to the retracting and extending requirements of spare tires for special vehicles. Therefore, an integrated retracting and extending mechanism is needed to meet the flexible retracting and extending requirements of spare tires for special vehicles. Content of the Utility Model

[0004] The purpose of the utility model is to provide a spare tire retracting and extending device for special vehicles, aiming to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A spare tire retracting and extending device for special vehicles, comprising,

[0007] A support assembly, the support assembly includes an L-shaped base plate, the bottom of the L-shaped base plate is fixedly connected with universal wheels, there are four universal wheels, and the four universal wheels are symmetrically distributed at the corners of the L-shaped base plate, and a retracting and extending assembly is cooperatively arranged on the side surface of the L-shaped base plate;

[0008] The retracting and extending assembly includes a stepping motor fixedly connected to the side surface of the L-shaped base plate, the output end of the stepping motor is fixedly connected with a straight shaft, the end surface of the straight shaft is inserted and connected with a connecting rod, the outer side of the connecting rod is fixedly connected with a rotating table, and a column is fixedly penetrated on the surface of the rotating table.

[0009] As a preferred scheme of the utility model, a pin shaft is fixedly connected to the top of the column, a first connecting rod is rotatably connected to the outer side of the pin shaft, a connecting ball is fixedly connected to the end surface of the first connecting rod, a crank rod is rotatably connected to the side surface of the connecting ball, a positioning block is fixedly connected to the side surface of the L-shaped base plate, and a stabilizing seat is fixedly connected to the end surface of the positioning block.

[0010] As a preferred scheme of the utility model, the stabilizing seat is rotatably connected with a support ball through an inserting shaft, the outer side surface of the support ball is fixedly connected with a second connecting rod, and the end surface of the second connecting rod is fixedly connected with the other side of the crank rod.

[0011] As a preferred embodiment of the present utility model, an inclined rod is fixedly connected between the outer wall of the column and the bottom of the rotating table, and a bent plate is fixedly connected to the bottom of the column, and a tire is inserted and connected to the end face of the bent plate.

[0012] As a preferred embodiment of the present utility model, an adapter assembly is disposed on the outer surface of the column. The adapter assembly includes a triangular plate fixed to the outside of the column, a transmission rod is rotatably connected to the side surface of the triangular plate, and a trapezoidal frame is fixedly connected to the end face of the transmission rod.

[0013] As a preferred embodiment of the present utility model, a base block is fixedly connected to the side surface of the L-shaped base plate. The number of the base blocks is two, and a side shaft is rotatably connected between the two base blocks, and the trapezoidal frame is fixedly sleeved on the outer wall surface of the side shaft.

[0014] As a preferred embodiment of the present utility model, grease is applied to the rotating parts of the connecting ball and the supporting ball, and the diameter of the supporting ball is larger than the diameter of the connecting ball.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: ① The rotational connection between the pin shaft and the first connecting rod enables the connecting ball to provide a stable supporting effect for the rotation of the column. The rotational connection between the crank rod and the connecting ball can transmit the rotation of the sphere and the rod to the column, enabling the tire to rotate at any angle, better meeting the requirement of flexible tire changing;

[0016] ② The rotational connection between the pin shaft and the first connecting rod enables the connecting ball to provide a stable supporting effect for the rotation of the column, and at the same time reduces the vibration of the tire during storage, better meeting the stable requirement of tire changing for special vehicles; Further, grease is applied to the rotating parts of the connecting ball and the supporting ball, which also reduces the excessive noise during tire changing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the structure of the component for achieving the effect of placing at any angle in the present utility model;

[0020] Figure 3 for the present utility modelFigure 2 Partial enlarged schematic view at position A

[0021] Figure 4 Schematic diagram of the structure of the component for realizing the rotational support effect in the present utility model

[0022] In the figure: 100, support component; 101, L-shaped substrate; 102, universal wheel; 200, retracting and extending component; 201, stepping motor; 202, straight shaft; 203, connecting rod; 204, rotating table; 205, column; 206, pin shaft; 207, first connecting rod; 208, connecting ball; 209, crank rod; 210, second connecting rod; 211, supporting ball; 212, stabilizing seat; 213, positioning block; 214, inclined rod; 215, bent plate; 216, tire; 300, connecting component; 301, triangular plate; 302, transmission rod; 303, trapezoidal frame; 304, side shaft; 305, base block Specific implementation manners

[0023] To make the above objects, features and advantages of the present utility model more obvious and understandable, the specific implementation manners of the present utility model will be described in detail below with reference to the accompanying drawings of the specification

[0024] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below

[0025] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it an individual or alternative embodiment that is mutually exclusive with other embodiments

[0026] Embodiment 1

[0027] Refer to Figure 1-2 , which is the first embodiment of the present utility model. This embodiment provides a spare tire retracting and extending device for a special vehicle, including

[0028] Support component 100, the support component 100 includes an L-shaped substrate 101, the bottom of the L-shaped substrate 101 is fixedly connected with universal wheels 102, four universal wheels 102 are provided, and the four universal wheels 102 are symmetrically distributed at the corners of the L-shaped substrate 101, and a retracting and extending component 200 is cooperatively arranged on the side of the L-shaped substrate 101

[0029] The retracting and extending assembly 200 includes a stepping motor 201 fixedly connected to the side surface of the L-shaped substrate 101. A straight shaft 202 is fixedly connected to the output end of the stepping motor 201. A connecting rod 203 is inserted and connected to the end surface of the straight shaft 202. A rotating table 204 is fixedly connected to the outside of the connecting rod 203. A column 205 is fixedly penetrated through the surface of the rotating table 204.

[0030] Specifically, the fixed connection between the L-shaped substrate 101 and the universal wheels 102 makes the overall device more stable when storing the spare tire, and can better meet the tire-changing requirements. The cooperative setting of the stepping motor 201, the straight shaft 202, and the connecting rod 203 further helps the rotating table 204 to rotate flexibly according to the specific occasion. The column 205 can rotate synchronously, further creating conditions for the flexible rotation of the tire 216.

[0031] Furthermore, a pin shaft 206 is fixedly connected to the top of the column 205. A first connecting rod 207 is rotatably connected to the outside of the pin shaft 206. A connecting ball 208 is fixedly connected to the end surface of the first connecting rod 207. A crank rod 209 is rotatably connected to the side surface of the connecting ball 208. A positioning block 213 is fixedly connected to the side surface of the L-shaped substrate 101. A stabilizing seat 212 is fixedly connected to the end surface of the positioning block 213.

[0032] Preferably, the rotatable connection between the pin shaft 206 and the first connecting rod 207 enables the connecting ball 208 to provide a stable supporting effect for the rotation of the column 205. The rotatable connection between the crank rod 209 and the connecting ball 208 can transmit the rotation of the sphere and the rod to the column 205, enabling the tire 216 to rotate at any angle, better meeting the requirements of flexible tire changing.

[0033] During use, first install the universal wheels 102 at the corner of the L-shaped substrate 101, then install the stepping motor 201 on the side surface of the L-shaped substrate 101. The straight shaft 202 and the connecting rod 203 are still assembled and connected. The rotating table 204 is fixed to the side of the connecting rod 203. Then, the column 205 is fixedly penetrated through the surface of the rotating table 204. The pin shaft 206 is fixed to the top of the column 205. The first connecting rod 207 is rotatably connected to the pin shaft 206. The crank rod 209 is rotatably installed on the side surface of the connecting ball 208 and can be used for the rotational support of the connecting ball 208.

[0034] Embodiment 2

[0035] Refer to Figure 2-3 , for the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides relevant components for realizing the stable retracting and extending effect of the tire.

[0036] Specifically, the stabilizing seat 212 is rotationally connected to a support ball 211 through a plug shaft. A second connecting rod 210 is fixedly connected to the outer side surface of the support ball 211, and the end surface of the second connecting rod 210 is fixedly connected to the other side of the crank rod 209.

[0037] Furthermore, the rotational connection between the stabilizing seat 212 and the support ball 211 enables the support ball 211 to be supported during rotation, avoiding the offset of the support ball 211 and also helping the tire 216 to be more stable during placement and storage.

[0038] Preferably, an inclined rod 214 is fixedly connected between the outer wall of the column 205 and the bottom of the rotating table 204, and a bent plate 215 is fixedly connected to the bottom of the column 205. A tire 216 is inserted and connected to the end surface of the bent plate 215.

[0039] Among them, the inclined rod 214 is arranged between the column 205 and the rotating table 204, so that the three form a triangular structure, improving the stability of the rotation of the column 205 and the rotating table 204. The insertion connection between the bent plate 215 and the tire 216 can meet the tire changing and installation requirements of tires 216 of different sizes.

[0040] In summary, the stabilizing seat 212 is installed on the side of the positioning block 213, the support ball 211 is installed inside the stabilizing seat 212 through a plug shaft, then the second connecting rod 210 is installed on the side of the support ball 211 to stably support the rotation of the support ball 211. At the same time, the inclined rod 214 is installed between the column 205 and the rotating table 204, which can be used as a reinforcing rib to enhance the connection strength. Then the bent plate 215 is connected to the bottom of the column 205, and the tire 216 is adaptively inserted and connected to the bent plate 215.

[0041] Embodiment 3

[0042] Refer to Figure 3-4 , which is the third embodiment of the present utility model. Different from the previous embodiment, this embodiment provides related components for realizing the rotational strengthening support effect.

[0043] Specifically, an engagement component 300 is cooperatively arranged on the outer surface of the column 205. The engagement component 300 includes a triangular plate 301 fixed to the outside of the column 205. A transmission rod 302 is rotationally connected to the side surface of the triangular plate 301. A trapezoidal frame 303 is fixedly connected to the end surface of the transmission rod 302. A base block 305 is fixedly connected to the side surface of the L-shaped base plate 101. The number of the base blocks 305 is two, and a side shaft 304 is rotationally connected between the two base blocks 305. The trapezoidal frame 303 is fixedly sleeved on the outer wall surface of the side shaft 304.

[0044] Furthermore, the rotation of the triangular plate 301 and the transmission rod 302 transmits the rotational motion of the column 205. The sleeving of the side shaft 304 and the trapezoidal frame 303 further helps the trapezoidal frame 303 to be well supported during rotation. At the same time, the trapezoidal shape of the trapezoidal frame 303 can reduce the jitter and offset of the tire 216 during replacement, and also improve the replacement efficiency.

[0045] Furthermore, grease is applied to the rotating parts of the connecting ball 208 and the supporting ball 211, and the diameter of the supporting ball 211 is larger than that of the connecting ball 208.

[0046] Preferably, the larger diameter of the supporting ball 211 than that of the connecting ball 208 can help the supporting ball 211 to bear a greater load, thereby enhancing the stability of the overall device during tire 216 replacement.

[0047] During use, the transmission rod 302 and the triangular plate 301 are rotatably installed, the trapezoidal frame 303 is connected to the side of the transmission rod 302, and then the side shaft 304 is inserted into the trapezoidal frame 303 to provide support for the rotation of the trapezoidal frame 303.

[0048] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible on the premise of substantially not deviating from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various components, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structure that performs the recited function in this disclosure, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0049] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present utility model, or those features that are not relevant to implementing the present utility model).

[0050] It should be understood that, during the development of any actual implementation, such as in any engineering or design project, a large number of specific implementation decisions can be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be routine work in design, manufacturing, and production.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A spare tire retracting and extending device for a special vehicle, characterized in that: include, A support assembly (100), the support assembly (100) comprising an L-shaped base plate (101), the bottom of the L-shaped base plate (101) being fixedly connected with a universal wheel (102), four universal wheels (102) being provided, the four universal wheels (102) being symmetrically distributed at the corners of the L-shaped base plate (101), and a retractable assembly (200) being provided on the side surface of the L-shaped base plate (101); The retractable assembly (200) comprises a stepper motor (201) fixedly connected to the side of the L-shaped base plate (101); the output end of the stepper motor (201) is fixedly connected to a straight shaft (202); the end surface of the straight shaft (202) is plugged with a connecting rod (203); the outer side of the connecting rod (203) is fixedly connected to a rotating platform (204); and a column (205) is fixedly passed through the surface of the rotating platform (204).

2. The special vehicle spare tire retracting and extending device according to claim 1, wherein: The top of the column (205) is fixedly connected to a pin shaft (206), the outer side of the pin shaft (206) is rotatably connected to a first connecting rod (207), the end face of the first connecting rod (207) is fixedly connected to a connecting ball (208), the side of the connecting ball (208) is rotatably connected to a crank rod (209), the side of the L-shaped base plate (101) is fixedly connected to a positioning block (213), and the end face of the positioning block (213) is fixedly connected to a stabilizing seat (212).

3. The special vehicle spare tire retracting and extending device according to claim 2, wherein: The stabilizing seat (212) is rotatably connected to a supporting ball (211) via an insertion shaft, the outer side surface of the supporting ball (211) is fixedly connected to a second connecting rod (210), and the end surface of the second connecting rod (210) is fixedly connected to the other side of the crank rod (209).

4. The special vehicle spare tire retracting and deploying device according to claim 3, characterized in that: An oblique rod (214) is fixedly connected between the outer wall of the column (205) and the bottom of the rotating platform (204), and a bent plate (215) is fixedly connected to the bottom of the column (205), and a tire (216) is plugged into the end surface of the bent plate (215).

5. The special vehicle spare tire retracting and extending device according to claim 4, characterized in that: The outer surface of the column (205) is provided with a connection assembly (300), and the connection assembly (300) comprises a triangular plate (301) fixed to the outer side of the column (205), the side surface of the triangular plate (301) is rotatably connected to a transmission rod (302), and the end surface of the transmission rod (302) is fixedly connected to a ladder frame (303).

6. The special vehicle spare tire retracting and extending device according to claim 5, characterized in that: A base block (305) is fixedly connected to the side of the L-shaped base plate (101), the number of the base blocks (305) is two, and a side shaft (304) is rotatably connected between the two base blocks (305), and the ladder frame (303) is fixedly sleeved on the outer wall surface of the side shaft (304).

7. The special vehicle spare tire retracting and extending device according to claim 6, wherein: The connecting ball (208) and the supporting ball (211) are both coated with grease at the rotating parts, and the diameter of the supporting ball (211) is larger than the diameter of the connecting ball (208).

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