Automobile tire replacing device

Abstract

The utility model discloses an automobile tire replacing device which comprises a lifting table, universal wheels with brakes are fixed to the four corners of the bottom of the lifting table, a rotating table is rotationally connected to the top of the lifting table, a limiting rod is fixed to one side of the top of the lifting table, and a limiting groove is formed in the outer edge of the rotating table. A screw rod is arranged at the center of the rotating table, the bottom end of the screw rod is rotationally connected with the center of the lifting table, the outer side of the screw rod is sleeved with a fixing cylinder, the bottom end of the fixing cylinder is fixed to the center of the lifting table, and a cylinder body of the fixing cylinder is rotationally connected with the rotating table; the top end of the fixing barrel is rotationally connected with the top end of a screw body, the two ends of the screw body are in threaded connection with nut seats, the outer walls of the two ends of a barrel body of the fixing barrel are in sliding connection with sliding blocks, the nut seats are fixedly connected with the sliding blocks, air cylinders are symmetrically fixed to the two sides of each sliding block, and clamping plates are fixed to the output ends of the air cylinders.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile maintenance auxiliary tools, and in particular relates to an automobile tire replacement device. Background Art

[0002] In the process of replacing a tire of a car, a technician is usually required to first remove the fixing bolts of the old tire, and then replace the old tire with a new tire and install it. However, the weight of a general household car tire is 5-9 kg. When replacing, the tire needs to be manually installed and then the bolts need to be tightened. During installation, if it is a single operation, it is relatively difficult, and one hand needs to operate and fix the tire with the other hand. This causes the tire to be easily dislocated, and it is troublesome to tighten the bolts, so the bolts are not tightened. Therefore, the utility model proposes a car tire replacement device, which is intended to assist technicians in fixing tires and simplify the process of replacing car tires.

[0003] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vehicle tire changing device comprises a lifting platform, wherein four corners of the bottom of the lifting platform are fixed with universal wheels with brakes, the top of the lifting platform is rotatably connected with a rotating platform, one side of the top of the lifting platform is located at a fixed limiting rod, a limiting groove is provided on the outer edge of the rotating platform, the limiting rod body is placed in the limiting groove, a screw is arranged at the center of the rotating platform, the bottom end of the screw is rotatably connected with the center of the lifting platform, a fixing cylinder is sleeved on the outer side of the screw, the bottom end of the fixing cylinder is fixed at the center of the lifting platform, the fixing cylinder body is rotatably connected with the rotating platform, the top end of the fixing cylinder is rotatably connected with the top end of the screw body, both ends of the screw body are threadedly connected with nut seats, the outer walls of both ends of the fixing cylinder body are slidably connected with sliders, the nut seat and the slider are fixedly connected, cylinders are symmetrically fixed on both sides of the slider, a clamping plate is fixed on the output end of the cylinder, and an elastic telescopic benchmark is fixed on the middle end of the fixing cylinder body located between the two sliders.

[0005] As a preferred technical solution of the utility model, the threads at both ends of the screw rod are opposite, and the internal threads of the nut seat adapted thereto are also opposite.

[0006] As a preferred technical solution of the utility model, the working surface of the clamping plate is an arc-shaped structure.

[0007] As a preferred technical solution of the utility model, a hand wheel is fixedly connected to the top end of the screw.

[0008] As a preferred technical solution of the utility model, the elastic telescopic pole includes an extension rod, one end of which is slidably connected to a hollow rod, one end of which extends into the interior of the hollow rod, a spring is installed inside the hollow rod, and both ends of the spring respectively abut against the ends of the hollow rod and the extension rod.

[0009] As a preferred technical solution of the utility model, a diagonal support plate is welded between one side of the symmetrically arranged cylinder and the sliding block.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model adjusts the benchmark rod through the lifting platform to align the benchmark rod with the center of the tire, and then rotates the screw rod, utilizes the movement of the nut seat to drive the slide table to move and then fix the tire for disassembly and assembly. The utility model assists in replacing the tire, prevents the tire from being too heavy to hinder the maintenance personnel from disassembling and assembling, and reduces the difficulty of tire replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the fixed cylinder in the utility model;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the elastic telescopic benchmark in the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the rotating platform and the lifting platform in the utility model;

[0017] In the figure: 1. lifting platform; 2. universal wheel with brake; 3. rotating platform; 4. screw; 5. fixing cylinder; 6. nut seat; 7. sliding block; 8. cylinder; 9. clamping plate; 10. hand wheel; 11. limiting rod; 12. limiting groove; 13. diagonal support plate; 14. extension rod; 15. elastic telescopic pole; 16. hollow rod; 17. spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example

[0020] See also Figure 1-4 The utility model provides the following technical solutions: a vehicle tire replacement device, including a lifting platform 1, universal wheels 2 with brakes are fixed at the four corners of the bottom of the lifting platform 1, a rotating platform 3 is rotatably connected to the top of the lifting platform 1, a fixed limiting rod 11 is located on one side of the top of the lifting platform 1, a limiting groove 12 is provided on the outer edge of the rotating platform 3, the limiting rod 11 is placed in the limiting groove 12, a screw 4 is arranged at the center of the rotating platform 3, the bottom end of the screw 4 is rotatably connected to the center of the lifting platform 1, a fixed cylinder 5 is sleeved on the outside of the screw 4, the bottom end of the fixed cylinder 5 is fixed to the center of the lifting platform 1, the fixed cylinder 5 is rotatably connected to the rotating platform 3, and the top of the fixed cylinder 5 It is rotatably connected to the top of the screw rod 4, both ends of the screw rod 4 are threadedly connected with nut seats 6, the outer walls of both ends of the fixed tube 5 are slidably connected with sliders 7, the nut seat 6 and the slider 7 are fixedly connected, cylinders 8 are symmetrically fixed on both sides of the slider 7, a clamping plate 9 is fixed on the output end of the cylinder 8, and an elastic telescopic benchmark 15 is fixed at the middle end of the fixed tube 5 body located between the two sliders 7. In this implementation scheme, the benchmark is adjusted by the lifting platform 1 to align the benchmark with the center of the tire, and then the screw 4 is rotated, and the nut seat 6 is used to move the slider 7 to fix the tire, and the tire can be disassembled and assembled by recovering the output piston rod with the help of the cylinder 8.

[0021] In order to ensure that the two nut seats 6 move simultaneously when the screw rod 4 is rotated, in this embodiment, as a preferred technical solution of the utility model, the threads at both ends of the screw rod 4 are opposite, and the internal threads of the nut seats 6 adapted thereto are also opposite.

[0022] In order to facilitate the clamping of the tire, in this embodiment, as a preferred technical solution of the utility model, the working surface of the clamping plate 9 is an arc-shaped structure.

[0023] In order to facilitate the rotation of the screw rod 4 , in this embodiment, as a preferred technical solution of the utility model, a hand wheel 10 is fixedly connected to the top end of the screw rod 4 .

[0024] In order to retract the piston rod when the cylinder 8 is in operation, in this embodiment, as a preferred technical solution of the utility model, the elastic telescopic rod 15 includes an extension rod 14, one end of the extension rod 14 is slidably connected to a hollow rod 16, one end of the extension rod 14 extends into the interior of the hollow rod 16, a spring 17 is installed inside the hollow rod 16, and both ends of the spring 17 respectively abut the ends of the hollow rod 16 and the extension rod 14.

[0025] In order to increase the stability of the cylinder 8 , in this embodiment, as a preferred technical solution of the utility model, a diagonal support plate 13 is welded between one side of the symmetrically arranged cylinder 8 and the slider 7 .

[0026] In summary, with the aid of the above technical solution of the utility model, when in use, the braked universal wheel 2 at the bottom is used to push the whole to the front of the car, and then the lifting platform 1 is used to adjust the height of the elastic telescopic pole 15 at the top so that the tip of the extension rod 14 is aligned with the center position of the tire. After the adjustment is completed, the cylinder 8 is output, so that the damaged tire of the car can be placed between the two clamping plates 9 on one side, and then the new car tire to be replaced is placed on the bottom clamping plate 9 on the other side, and then the screw rod 4 is rotated by the hand wheel 10, and the rotating nut seat 6 of the screw rod 4 is used to rotate the rod body. The threads are close to each other and then clamp the two tires. After clamping firmly, the damaged tire bolts of the car are removed from both sides by using a wrench. The single-side cylinder 8 retracts the piston rod to compress the elastic telescopic mark rod 15, and the damaged tire can be removed. Then the rotating table 3 is rotated, and the limiting rod 11 moves in the limiting groove 12 to limit the rotation angle of the rotating table 3, so that the rotating table 3 is rotated 180 degrees, and the replaced new tire is rotated oppositely. The cylinder 8 is used to output again to install the new tire on the wheel axle. After that, the bolts are tightened again, and the screw rod 4 is rotated to loosen the tire, and then the damaged tire can be removed.

[0027] Finally, it should be noted that in the present utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0028] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A vehicle tire changing device, comprising a lifting platform (1), characterized in that: Universal wheels (2) with brakes are fixed at the four corners of the bottom of the lifting platform (1); the top of the lifting platform (1) is rotatably connected to a rotating platform (3); a fixed limiting rod (11) is located on one side of the top of the lifting platform (1); a limiting groove (12) is provided on the outer edge of the rotating platform (3); the rod body of the limiting rod (11) is placed in the limiting groove (12); a screw rod (4) is arranged at the center of the rotating platform (3); the bottom end of the screw rod (4) is rotatably connected to the center of the lifting platform (1); a fixing cylinder (5) is sleeved on the outer side of the screw rod (4); the bottom end of the fixing cylinder (5) is fixed to the lifting platform (1) ), the body of the fixed cylinder (5) and the rotating platform (3) are rotatably connected, the top end of the fixed cylinder (5) and the top end of the screw rod (4) are rotatably connected, both ends of the screw rod (4) are threadedly connected with nut seats (6), the outer walls of both ends of the body of the fixed cylinder (5) are slidably connected with sliders (7), the nut seats (6) and the slider (7) are fixedly connected, cylinders (8) are symmetrically fixed on both sides of the slider (7), a clamping plate (9) is fixed on the output end of the cylinder (8), and an elastic telescopic mark rod (15) is fixed at the middle end of the body of the fixed cylinder (5) located between the two sliders (7).

2. The vehicle tire changing device according to claim 1, characterized in that: The threads at both ends of the screw rod (4) are opposite to each other, and the internal threads of the nut seat (6) adapted thereto are also opposite to each other.

3. The vehicle tire changing device according to claim 1, characterized in that: The working surface of the clamping plate (9) is an arc-shaped structure.

4. The vehicle tire changing device according to claim 1, characterized in that: The top end of the screw rod (4) is fixedly connected with a hand wheel (10).

5. The vehicle tire changing device according to claim 1, characterized in that: The elastic telescopic pole (15) comprises an extension rod (14), one end of the extension rod (14) is slidably connected to a hollow rod (16), one end of the extension rod (14) extends into the interior of the hollow rod (16), a spring (17) is installed inside the hollow rod (16), and two ends of the spring (17) respectively abut against the ends of the hollow rod (16) and the extension rod (14).

6. The vehicle tire changing device according to claim 1, characterized in that: A diagonal support plate (13) is welded between one side of the symmetrically arranged cylinder (8) and the slider (7).

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