Vacuum tire disassembling and assembling machine convenient to move

Abstract

The utility model discloses a vacuum tire changer convenient to move, which comprises a shell and a moving part, the moving part is arranged in the shell, the moving part is provided with an overturning rod a which is transversely and rotatably arranged in the shell, a rotating roller a is arranged on the side surface of the overturning rod a, an overturning rod b is transversely and rotatably arranged in the shell, and the rotating roller a is arranged on the side surface of the overturning rod b. A rotating roller b is arranged on the side face of the overturning rod b, the overturning rod b and the overturning rod a are arranged in parallel, a transmission connecting rod is longitudinally and rotationally arranged in the shell, one end of the transmission connecting rod is connected with the overturning rod a in a meshed mode, and the other end of the transmission connecting rod is connected with the overturning rod b in a meshed mode. According to the synchronous turnover mechanism, the moving part is arranged, the turnover rod a and the turnover rod b can rotate at the same time through transmission of the transmission connecting rod, the double-shaft linkage synchronous turnover mechanism is achieved, the rotary idler wheels on the two sides can be controlled to be unfolded or folded at the same time only by operating the turnover rod on the single side, the operation steps in the equipment moving process are simplified, and the working efficiency is improved; and gear meshing transmission ensures the synchronism and stability of double-shaft rotation.

Description

Technical Field

[0001] This utility model relates to the field of vacuum tire changer technology, specifically a portable vacuum tire changer. Background Technology

[0002] A tubeless tire changer is a specialized piece of machinery used for removing and installing tubeless tires. It is widely used in tire repair for automobiles, trucks, and construction vehicles. It uses a pry bar, shovel, or rotating jaws to separate the tire bead from the rim edge, avoiding rim scratches caused by manual prying and assisting in the installation of new tires. This significantly improves repair efficiency and reduces the intensity of manual labor.

[0003] To facilitate movement, existing tubeless tire changers typically have rollers installed at the bottom. Currently, the common solution on the market is to symmetrically place two rotatable, folding rollers on each side of the machine base. However, in actual use, the operator must bend over and manually flip each roller from its folded position to the working position. Since only two rollers are provided, the other side of the machine must be lifted during movement to allow the rollers to touch the ground and bear weight. This means the operator's arms and back have to bear a significant portion of the machine's weight, making this operation highly susceptible to muscle strain. Furthermore, the unilateral lifting action poses a safety hazard; improper operation could cause the machine to become unbalanced and slip. Utility Model Content

[0004] The purpose of this invention is to provide a portable tubeless tire changer to address the issues raised in the background section. Because the machine only has two rollers, the other side must be lifted during movement to allow the rollers to touch the ground and bear weight. This means the operator's arms and waist have to support a significant portion of the machine's weight, easily leading to muscle strain. Furthermore, the unilateral lifting action poses a safety hazard; improper operation could cause the machine to become unbalanced and slip.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a portable vacuum tire mounting and dismounting machine, comprising a housing and a movable part:

[0006] The movable part is disposed inside the housing. The movable part has a flipping rod a that is laterally rotatably disposed inside the housing. A rotating roller a is disposed on the side of the flipping rod a. A flipping rod b is laterally rotatably disposed inside the housing. A rotating roller b is disposed on the side of the flipping rod b. The flipping rod b is disposed parallel to the flipping rod a. A transmission link is longitudinally rotatably disposed inside the housing. One end of the transmission link is engaged with the flipping rod a, and the other end of the transmission link is engaged with the flipping rod b. The rotation of the flipping rod a drives the transmission link to rotate, thereby driving the flipping rod b to rotate and flip out the rotating rollers a and b.

[0007] By adopting the above technical solution, the rotating rods a and b can be rotated simultaneously through the transmission linkage, realizing a synchronous rotating mechanism with dual-axis linkage. Only one side of the rotating rod needs to be operated to simultaneously control the unfolding or retraction of the rotating rollers on both sides, which simplifies the operation steps when moving the equipment and improves work efficiency. The gear meshing transmission ensures the synchronicity and stability of the dual-axis rotation and avoids the problem of equipment tilting caused by the asynchronous unfolding of the wheels on both sides.

[0008] Preferably, the movable part also has rotating rods disposed at both ends of the flip rod a, the rotating rods being located outside the housing, and a handrail being provided at the end of the rotating rods away from the flip rod a.

[0009] By adopting the above technical solution, operators can easily apply force through the exposed rotating rod and handrail, which conforms to ergonomic design and reduces the labor intensity of operators. The handrail design also facilitates pushing and pulling operations when moving the equipment.

[0010] Preferably, the moving part also has a sleeve disposed on the side of the rotating rod, and a retaining shaft is laterally slidably disposed inside the sleeve. A spring is disposed at one end of the retaining shaft and the spring is located inside the sleeve.

[0011] By adopting the above technical solution, the spring force can keep the locking shaft extending outward, ensuring that the equipment position can be automatically locked in the non-operational state, and preventing the rotating roller from accidentally retracting and causing equipment instability.

[0012] Preferably, the housing also has a slot on the side of the housing that engages with a retaining pin.

[0013] By adopting the above technical solution, when the rotating rollers a and b are fully extended or retracted, the locking shaft will automatically engage with the slot under the action of the spring.

[0014] Preferably, the moving part also has a bevel tooth a located at the middle position of the flipping rod a, and a bevel tooth b is provided at one end of the transmission link near the flipping rod a, the bevel tooth b meshing with the bevel tooth a.

[0015] By adopting the above technical solution, the rotation of the flipping rod a can drive the transmission link to rotate through the transmission of bevel teeth a and b.

[0016] Preferably, the moving part also has a bevel tooth d located at the middle position of the flipping rod a, and a bevel tooth c is provided at one end of the transmission link near the flipping rod b, the bevel tooth c meshing with the bevel tooth d.

[0017] By adopting the above technical solution, the rotation of the transmission link can drive the rotating rod b to rotate after being transmitted through the bevel teeth c and d.

[0018] Preferably, the bevel tooth a and the bevel tooth d are both located on the same side of the transmission connecting rod, and the flipping rod a and the flipping rod b have a mirror symmetrical structure along the central axis of the outer shell.

[0019] By adopting the above technical solution, the mirror symmetrical layout can make the force on the two flip rods more balanced and the transmission efficiency higher. At the same time, flip rod a and flip rod b will rotate in opposite directions after being transmitted through the transmission link.

[0020] Preferably, the rotating roller a has two wheels located at both ends of the flipping rod a, and the rotating roller b also has two wheels located at both ends of the flipping rod b.

[0021] By adopting the above technical solution, the four-wheel support design greatly improves the stability and load-bearing capacity of the equipment during movement. The four wheels are evenly distributed on both sides of the equipment, ensuring that it remains balanced during movement.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: by providing a moving part, the flipping rod a and flipping rod b can be rotated simultaneously through the transmission link, realizing a synchronous flipping mechanism with dual-axis linkage. Only one side flipping rod needs to be operated to simultaneously control the unfolding or retraction of the rotating rollers on both sides, which simplifies the operation steps when moving the equipment and improves work efficiency. The gear meshing transmission ensures the synchronicity and stability of the dual-axis rotation and avoids the problem of equipment tilting caused by the asynchronous unfolding of the wheels on both sides. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a schematic diagram of the overall structure of this application;

[0025] Figure 3 This is a schematic diagram of the overall structure of this application;

[0026] Figure 4 This is a schematic diagram of the overall cross-sectional structure of this application;

[0027] Figure 5 This is a schematic diagram of the overall cross-sectional structure of this application;

[0028] Figure 6 This is a schematic diagram of the connection structure between the rotating rod and the locking shaft in this application.

[0029] In the diagram: 1. Outer shell; 101. Slot; 2. Moving part; 201. Flipping rod a; 202. Rotating roller a; 203. Bevel tooth a; 204. Rotating rod; 205. Sleeve; 206. Snap pin; 207. Spring; 208. Transmission connecting rod; 209. Bevel tooth b; 210. Bevel tooth c; 211. Flipping rod b; 212. Rotating roller b; 213. Bevel tooth d. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a technical solution: a portable tubeless tire changer, comprising a housing 1 and a movable part 2.

[0033] The housing 1 has a hydraulic structure inside, which uses hydraulic assistance to separate or press the tire bead from the edge of the wheel hub, while ensuring the sealing between the tire and the wheel hub. This is the prior art and will not be described in detail below.

[0034] The movable part 2 is disposed inside the outer casing 1. A flipping rod a201 is laterally rotatable inside the outer casing 1, and a rotating roller a202 is disposed on the side of the flipping rod a201. A flipping rod b211 is also laterally rotatable inside the outer casing 1, and a rotating roller b212 is disposed on the side of the flipping rod b211. The flipping rod b211 is parallel to the flipping rod a201. A transmission connecting rod 208 is longitudinally rotatable inside the outer casing 1. One end of the transmission connecting rod 208 is engaged with the flipping rod a201, and the other end of the transmission connecting rod 208 is engaged with the flipping rod b211. The rotation of the transmission link 208 drives the flipping rod b211 to rotate simultaneously, flipping out the rotating rollers a202 and b212. The transmission link 208 can simultaneously rotate the flipping rods a201 and b211, realizing a synchronous flipping mechanism with dual-axis linkage. Only one side of the flipping rod needs to be operated to simultaneously control the unfolding or retraction of the rotating rollers on both sides, simplifying the operation steps when moving the equipment and improving work efficiency. The gear meshing transmission ensures the synchronicity and stability of the dual-axis rotation, avoiding the equipment tilting problem caused by the asynchronous unfolding of the two wheels.

[0035] Example 2

[0036] Please see Figure 4 , Figure 5 and Figure 6 This embodiment provides a technical solution: a portable tubeless tire mounting and dismounting machine, including a moving part 2, a flipping rod a201, and a flipping rod b211.

[0037] Rotating rods 204 are fixedly installed at both ends of the tilting rod a201. This fixing method is a conventional detachable fixing method, such as bolt connection or snap-fit ​​connection. The rotating rods 204 are located outside the outer casing 1. A handrail is provided at the end of the rotating rod 204 away from the tilting rod a201, allowing operators to easily apply force through the exposed rotating rod 204 and handrail. This ergonomic design reduces the operator's labor intensity. The handrail design also facilitates pushing and pulling operations when moving the equipment.

[0038] A sleeve 205 is fixedly installed on the side of the rotating rod 204. The fixing method is an existing detachable fixing, such as bolt connection, snap connection, etc. A retaining shaft 206 is slidably installed inside the sleeve 205. A spring 207 is installed at one end of the retaining shaft 206. The spring 207 is located inside the sleeve 205. The spring force of the spring 207 can keep the retaining shaft 206 in an outward extension tendency, ensuring that the equipment position can be automatically locked in the non-operation state, preventing the rotating roller from accidentally retracting and causing the equipment to become unstable. The spring 207 is in the open state when not affected by external force.

[0039] A slot 101 is provided on the side of the outer casing 1. The slot 101 is engaged with the locking shaft 206. When the rotating rollers a202 and b212 are fully extended or retracted, the locking shaft 206 will automatically engage with the slot 101 under the action of the spring 207.

[0040] A bevel tooth a203 is integrally provided in the middle position of the flipping rod a201, and a bevel tooth b209 is provided at one end of the transmission link 208 near the flipping rod a201. The bevel tooth b209 is meshed with the bevel tooth a203. The rotation of the flipping rod a201 can drive the transmission link 208 to rotate through the transmission of the bevel tooth a203 and the bevel tooth b209.

[0041] A bevel tooth d213 is integrally provided in the middle position of the flipping rod b211, and a bevel tooth c210 is provided at one end of the transmission link 208 near the flipping rod b211. The bevel tooth c210 is meshed with the bevel tooth d213. The rotation of the transmission link 208 can drive the flipping rod b211 to rotate through the transmission of the bevel tooth c210 and the bevel tooth d213.

[0042] Both bevel gear a203 and bevel gear d213 are located on the same side of the transmission link 208. The flipping rod a201 and flipping rod b211 are mirror-symmetrical along the central axis of the outer shell 1. The mirror-symmetrical layout makes the force on the flipping rods on both sides more balanced and the transmission efficiency higher. At the same time, the flipping rods a201 and b211 will rotate in opposite directions after being transmitted through the transmission link 208.

[0043] Two rotating rollers a202 are located at both ends of the tilting rod a201, and two rotating rollers b212 are also located at both ends of the tilting rod b211. This four-wheel support design greatly improves the stability and load-bearing capacity of the equipment during movement. The four wheels are evenly distributed on both sides of the equipment to ensure that the equipment remains balanced during movement.

[0044] Working principle: First, when the tubeless tire changer needs to be moved, the operator holds the rotating rod 204 and applies rotational force to start the rotating rod a201. The rotation of the rotating rod a201 drives the bevel teeth b209 on the transmission connecting rod 208 through the bevel teeth a203 on it, causing the transmission connecting rod 208 to start rotating. The bevel teeth c210 at the other end of the transmission connecting rod 208 mesh with the bevel teeth d213 on the rotating rod b211, causing the rotating rod b211 to rotate synchronously in the opposite direction. Through this gear transmission mechanism, the rotating rods a201 and b211 on both sides achieve synchronous reverse rotation, thereby driving the rotating roller a202 and the rotating rod a202 to rotate in the opposite direction. Roller b212 simultaneously extends outwards or retracts inwards. When the roller is fully extended, the retaining pin 206 inside the sleeve 205 automatically pops out under the force of the spring 207, engaging and locking with the retaining groove 101 on the outer casing 1, ensuring the roller remains stable in the extended state. At this time, the equipment is movable, and the operator can easily push the equipment to move it using the handle. When it is necessary to fix the equipment for tire removal or installation, the operator only needs to press the retaining pin 206 to disengage it from the retaining groove 101, and then rotate the rotating rod 204 in the opposite direction. Through the same transmission mechanism, the rollers a202 and b212 retract synchronously. After the rollers are fully retracted, the bottom of the equipment is in direct contact with the ground, ensuring stability during operation.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable vacuum tire mounting and dismounting machine, characterized in that, include: shell; The movable part is disposed inside the housing. The movable part has a flipping rod a that is laterally rotatably disposed inside the housing. A rotating roller a is disposed on the side of the flipping rod a. A flipping rod b is laterally rotatably disposed inside the housing. A rotating roller b is disposed on the side of the flipping rod b. The flipping rod b is disposed parallel to the flipping rod a. A transmission link is longitudinally rotatably disposed inside the housing. One end of the transmission link is engaged with the flipping rod a. The other end of the transmission link is engaged with the flipping rod b. The rotation of the flipping rod a drives the transmission link to rotate, thereby driving the flipping rod b to rotate and flip out the rotating rollers a and b.

2. The portable vacuum tire mounting and dismounting machine according to claim 1, characterized in that: The movable part also has rotating rods disposed at both ends of the flip rod a, the rotating rods being located outside the housing, and a handrail being provided at the end of the rotating rods away from the flip rod a.

3. The portable vacuum tire mounting and dismounting machine according to claim 1, characterized in that: The moving part also has a sleeve disposed on the side of the rotating rod, and a retaining shaft is laterally slidably disposed inside the sleeve. One end of the retaining shaft is provided with a spring, which is located inside the sleeve.

4. The portable vacuum tire mounting and dismounting machine according to claim 3, characterized in that: The housing also has a slot on the side of the housing that engages with a retaining pin.

5. The portable vacuum tire mounting and dismounting machine according to claim 1, characterized in that: The moving part also has a bevel tooth a located in the middle of the flipping rod a, and a bevel tooth b is provided at one end of the transmission link near the flipping rod a, which meshes with the bevel tooth a.

6. A portable vacuum tire mounting and dismounting machine according to claim 5, characterized in that: The moving part also has a bevel tooth d located at the middle position of the flipping rod a, and a bevel tooth c is provided at one end of the transmission link near the flipping rod b, which meshes with the bevel tooth d.

7. A portable vacuum tire mounting and dismounting machine according to claim 6, characterized in that: Both bevel teeth a and d are located on the same side of the transmission connecting rod, and the flipping rod a and flipping rod b are mirror-symmetrical along the central axis of the outer casing.

8. A portable vacuum tire mounting and dismounting machine according to claim 1, characterized in that: The rotating roller a has two wheels located at both ends of the flipping rod a, and the rotating roller b also has two wheels located at both ends of the flipping rod b.

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