Lever type tire unloader

Abstract

The utility model relates to the technical field of automobile maintenance, in particular to a lever type tire unloader. The utility model provides a lever type tire unloader, including bottom plate, slide bar, bracing frame, pulley, locating lever, bi-directional screw, arm of force, connecting rod and lifting rod, bottom plate is L-shaped design, slide bar up and down symmetry is provided the left part of bottom plate, the front end and the rear end of two slide bar are both slidingly connected with bracing frame, the pulley is both provided the middle adjacent side of two bracing frame, the locating lever is provided with the two-way screw, arm of force, connecting rod and lifting rod. The two-way screw is arranged between the tops of the supporting frames in a threaded mode, the force arms are symmetrically arranged on the left side of the bottom plate, the connecting rods are symmetrically arranged between the two force arms, and the lifting rod is arranged on the right side of the bottom plate. According to the lever principle, the tire is easily lifted and the two-way screw is rotated by controlling the force arm, the connecting rod and the lifting rod, so that the two supporting frames are driven to move towards the rim, the tire and the rim are effectively separated by means of the thrust of the pulley, and the operation is labor-saving, simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile maintenance, in particular to a lever-type tire unloader. Background Art

[0002] Truck tire replacement is an important maintenance process. In traditional tire removal, tire wrenches, crowbars and other tools are required for manual replacement. Truck tires are usually larger and heavier than passenger car tires, which increases the difficulty and physical strength required for manual operation. Manually using tools such as crowbars to apply force on the edge of the tire may cause the tire to pop out suddenly and cause personal injury if the operation is improper.

[0003] In order to solve the above problems, a lever-type tire unloader needs to be designed. Utility Model Content

[0004] In order to overcome the disadvantages that manual tire unloading operation is more difficult and physically demanding because tires of bicycles are usually larger and heavier than tires of passenger cars, the utility model provides a lever-type tire unloader.

[0005] The lever-type tire unloader includes a base plate, a sliding rod, a support frame, a pulley, a positioning rod, a bidirectional screw, a force arm, a connecting rod and a lifting rod. The base plate is designed in an L shape. The sliding rod is symmetrically arranged on the left part of the base plate. The front and rear ends of the two sliding rods are slidably connected with the support frame. The pulleys are arranged on one side adjacent to the middle of the two support frames. The positioning rod is slidably arranged on the base plate. The bidirectional screw thread is arranged between the tops of the support frames. The force arm is symmetrically arranged on the left side of the base plate. The connecting rod is symmetrically arranged between the two force arms. The lifting rod is arranged on the right side of the base plate.

[0006] As a further preferred solution, a rotating disk is also included, and the rotating disk is arranged on the front and rear ends of the bidirectional screw.

[0007] As a further preferred solution, it also includes a handle, which is arranged at the upper ends of the two force arms.

[0008] As a further preferred solution, a support rod is also included, and the support rod is connected between the connecting rod and the left side of the base plate.

[0009] As a further preferred solution, it also includes moving wheels, which are symmetrically arranged at the bottom of the base plate.

[0010] As a further preferred solution, the lever arm is connected by a double connecting rod.

[0011] As a further preferred solution, the handle is provided with an anti-slip pad.

[0012] The beneficial effects and significant improvements of the utility model are:

[0013] The utility model is designed with a force arm, a handle, a connecting rod, a supporting rod and a lifting rod. When in use, the handle is pushed downward to drive the bottom plate and the lifting rod to tilt and lift the tire. In this way, the principle of lever is utilized to make manual operation more labor-saving. The bidirectional screw is driven to rotate by rotating the rotating disk. Under the action of the bidirectional screw, the two supporting frames and the pulley are driven to approach each other until the pulley contacts the rim in the tire and rotates. The tire is separated from the rim by the thrust of the two pulleys, and the operation is simpler and more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a partial three-dimensional structural schematic diagram of the sliding rod and the supporting frame of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the bidirectional screw, rotating disk, force arm, connecting rod and other parts of the utility model.

[0017] Among them: 1-bottom plate, 2-slide rod, 3-support frame, 4-pulley, 5-positioning rod, 6-bidirectional screw, 7-rotating disk, 8-arm, 9-handle, 10-connecting rod, 11-support rod, 12-lifting rod, 13-moving wheel. DETAILED DESCRIPTION

[0018] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this article are only for the position of the structure shown in the corresponding drawings. The serial numbers of the parts in this article, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words such as connection and coupling in this application include direct and indirect connection (coupling) unless otherwise specified.

[0019] Example: Lever tire remover, please see Figures 1 to 3, including a base plate 1, a slide bar 2, a support frame 3, a pulley 4, a positioning rod 5, a bidirectional screw 6, a rotating disk 7, a lever arm 8, a handle 9, a connecting rod 10, a support rod 11, a lifting rod 12 and a moving wheel 13. The base plate 1 is designed in an L shape. The left part of the base plate 1 is symmetrically connected with the slide bar 2. The front and rear ends of the two slide bars 2 are slidably connected. The pulley 4 is installed on the side close to each other in the middle of the two support frames 3. The positioning rod 5 is slidably connected between the top left side of the base plate 1 and the middle of the two support frames 3. The positioning rod 5 is designed in a U shape. It runs through the center position of the two support frames 3, and a bidirectional screw rod 6 is connected between the tops of the support frames 3 by threads. The front and rear ends of the bidirectional screw rod 6 are connected to rotating disks 7. A force arm 8 is symmetrically connected to the left side of the base plate 1. Both force arms 8 are connected to handles 9. The handles 9 are equipped with anti-slip pads to improve safety performance. A connecting rod 10 is symmetrically connected to the two force arms 8 horizontally and vertically. A supporting rod 11 is connected between the connecting rod 10 and the left side of the base plate 1. A lifting rod 12 is connected to the lower right side of the base plate 1, and a moving wheel 13 is symmetrically installed on the left side of the bottom of the base plate 1.

[0020] When the lever-type tire unloader is needed, the positioning rod 5 is pulled out to facilitate the placement of the tire, and the tire to be removed is placed steadily on the lifting rod 12 located on the bottom plate 1. Then, the bottom plate 1 is pushed forward, and with the help of the moving wheel 13, the bottom plate 1 can be smoothly moved to a suitable position. While pushing the bottom plate 1, the handle 9 and the connecting rod 10 need to be pressed down with force, which will drive the front end of the bottom plate 1 to tilt upward, so that the tire naturally slides into the bottom plate 1. Subsequently, the positioning rod 5 is reinserted into the original position of the support frame 3 to ensure that the tire is firmly fixed to prevent it from sliding in subsequent operations. Next, the rotating disk 7 at both ends of the bidirectional screw 6 is rotated to drive the bidirectional screw 6 to rotate. Under the action of the bidirectional screw 6, the two support frames 3 will move in a direction close to each other until the pulley 4 contacts the rim of the tire. As the support frame 3 continues to move, the pulley 4 will gradually push the tire, and the tire will be separated from the rim by lever and tilt angle. Through the rolling action of the pulley 4, the tire will be pushed out smoothly, thereby achieving effective separation of the tire from the rim. The entire process makes full use of the lever principle, greatly reducing the physical exertion of operators and improving the efficiency and safety of tire unloading.

[0021] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. Lever type tire unloader, characterized by: The invention comprises a base plate (1), a sliding rod (2), a support frame (3), a pulley (4), a positioning rod (5), a bidirectional screw rod (6), a force arm (8), a connecting rod (10) and a lifting rod (12). The base plate (1) is designed in an L shape. The sliding rod (2) is symmetrically arranged on the left part of the base plate (1) from top to bottom. The front end and the rear end of the two sliding rods (2) are slidably connected with the support frame (3). The pulleys (4) are arranged on one side adjacent to the middle of the two support frames (3). The positioning rod (5) is slidably arranged on the base plate (1). The bidirectional screw rod (6) is threadedly arranged between the tops of the support frames (3). The force arm (8) is symmetrically arranged on the left side of the base plate (1). The connecting rod (10) is symmetrically arranged between the two force arms (8). The lifting rod (12) is arranged on the right side of the base plate (1).

2. The lever-type tire remover according to claim 1, characterized in that: It also includes a rotating disk (7), which is arranged on the front and rear ends of the bidirectional screw (6).

3. The lever-type tire remover according to claim 2, characterized in that: It also includes a handle (9), which is arranged on the upper ends of the two force arms (8).

4. The lever-type tire remover according to claim 3, characterized in that: It also includes a support rod (11), which is connected between the connecting rod (10) and the left side of the bottom plate (1).

5. The lever-type tire remover according to claim 4, characterized in that: It also includes moving wheels (13), which are symmetrically arranged at the bottom of the base plate (1).

6. The lever-type tire remover according to claim 5, characterized in that: The lever arm (8) is connected by a double connecting rod (10).

7. The lever-type tire remover according to claim 6, characterized in that: The handle (9) is provided with an anti-slip pad.

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