Tire changer

Abstract

The utility model discloses a tire changer which comprises a T-shaped base and a supporting stand column which are fixedly connected, the side, corresponding to the supporting stand column, of the T-shaped base is connected with a sliding base in a sliding mode, a workbench is hinged to the sliding base, the T-shaped base is provided with a first driving component, and the first driving component is used for driving the sliding base to horizontally slide on the T-shaped base; the upper surface of the sliding base is fixedly connected with a rack, the T-shaped base is fixedly connected with an encoder, an output shaft of the encoder is provided with a fluted disc, the fluted disc can be meshed with the rack, the encoder is connected with the PLC control box, and the first driving component is connected with the driving station and the PLC control box. The horizontal moving distance of the workbench is accurately positioned, when tires are disassembled and assembled, operation is easy, time and labor are saved, and the tire disassembling and assembling device is more conveniently suitable for disassembling and assembling the tires of different models.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile tires, in particular to a tire changing machine. Background Art

[0002] A car tire is mainly composed of a wheel hub and a tire. The tire is stuck in the wheel hub. When a tire needs to be repaired or replaced, the tire needs to be removed from the wheel hub. The repaired tire or the new tire needs to be re-stuck in the wheel hub to complete the installation. A tire remover is a commonly used equipment for replacing and repairing car tires. It is a device that removes and installs car tires from wheel hubs to complete the repair, replacement, and installation of car tires.

[0003] The existing tire changing machine generally mainly includes a bracket and a support seat. The bracket includes a column and a lifting workbench. The lifting workbench can slide up and down along the column. A turntable for fixing the wheel hub is provided on the support seat. A tire changing piece and a tire loading piece are provided on the lifting workbench. Most of the tire changing pieces are in the shape of a prying hook. The prying hook is inserted into the joint between the outer tire and the wheel hub, and then the turntable is rotated to rotate the wheel hub so as to remove the outer tire from the wheel hub. Common tire loading pieces mainly include rolling bowl type, pressure plate type and double roller type. The rolling bowl type tire loading piece uses a bowl-shaped follower roller to press on the outer tire to achieve tire loading. When the wheel hub is rotated, the tire mouth is deformed under the pressure of the rolling bowl and the supporting force of the edge of the wheel hub and then forced into the inside of the wheel hub. The double roller type tire loading piece is similar in principle to the rolling bowl type tire loading piece. It can be imagined that two rolling bowls are pressed on the outer tire one after another. The front roller first pre-presses the outer tire to deform once, and the rear roller rolls the outer tire twice to deform the outer tire twice and then forced into the inside of the wheel hub. The pressure plate type tire mounting device uses a flat pressure plate with an arc-shaped side to press the side of the outer tire and then gradually send it into the wheel hub.

[0004] When replacing or repairing a tire, the workbench of the existing tire changing machine will slide horizontally with the sliding base, and after sliding to the appropriate position below the disassembly and assembly component, the disassembly and assembly will be performed by the disassembly and assembly component above. The rim diameters of common tire models are currently 16cm, 17.5cm, 19.5cm and 22.5cm. However, during the sliding process of the workbench, the sliding distance of the workbench cannot be effectively positioned. It is often necessary to manually estimate the distance, or even make multiple adjustments, before the tire can slide to the right below the disassembly and assembly component. Especially for tires of different models, such a method is more likely to cause inconvenience in operation, time-consuming and labor-intensive, and low work efficiency.

[0005] Therefore, there is an urgent need in the art for a tire changing machine that is simple to operate, can accurately locate the sliding distance of a workbench, and saves time and effort. Summary of the invention

[0006] The purpose of the utility model is to provide a tire changing machine to solve the problems existing in the above-mentioned prior art. When disassembling and installing tires, the operation is simple, time-saving and labor-saving, and the sliding distance of the workbench can be accurately positioned to be more conveniently applicable to tires of different models.

[0007] To achieve the above purpose, the utility model provides the following solutions:

[0008] The utility model provides a tire changing machine, comprising a fixedly connected T-shaped base and a supporting column, a sliding base is slidably connected to one side of the T-shaped base corresponding to the supporting column, a workbench is hinged on the sliding base, and a first driving component is provided on the T-shaped base, and the first driving component is used to drive the sliding base to slide horizontally on the T-shaped base;

[0009] A rack is fixedly connected to the upper surface of the sliding base, an encoder is fixedly connected to the T-shaped base, a gear disc is provided on the output shaft of the encoder, the gear disc can engage with the rack, the encoder is connected to the control box, and the first driving component is respectively connected to the driving station and the control box.

[0010] Preferably, a column sleeve is sleeved on the upper end of the supporting column, a disassembly and assembly assembly is fixedly connected to the column sleeve, a second driving component is provided on the supporting column, the second driving component is used to drive the lifting and lowering of the column sleeve on the supporting column; the disassembly and assembly assembly includes a tire removing part and a tire mounting part, a sliding column is axially provided at the upper end of the column sleeve, the tire removing part and the tire mounting part are hinged on the sliding column, and the second driving component is respectively connected to the driving station and the control box.

[0011] Preferably, a third driving component is further provided on the T-shaped base, and the third driving component is used to drive the workbench to perform an axis-around-axis flipping motion on the sliding base, and the third driving component is respectively connected to the driving station and the control box.

[0012] Preferably, the first driving component is a first hydraulic cylinder, the fixed end of which is connected to the T-shaped base, and the movable end of which is connected to the sliding base; the second driving component is a second hydraulic cylinder, the fixed end of which is connected to the supporting column, and the movable end of which is connected to the top end of the column sleeve; the third driving component is a third hydraulic cylinder, the fixed end of which is connected to the sliding base, and the movable end of which is connected to the workbench.

[0013] Preferably, the drive station is a hydraulic pump station, which provides hydraulic oil to the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder. A solenoid valve is provided on the oil line connecting the hydraulic pump station to the first hydraulic cylinder, and the solenoid valve is used to control the oil supply to the first hydraulic cylinder.

[0014] Preferably, the hydraulic pump station and the control box are fixedly connected to the T-shaped base and are respectively located on both sides of the supporting column.

[0015] Preferably, a slide rail is provided on the top surface of the side of the T-shaped base corresponding to the supporting column so that the sliding base can slide along the slide rail.

[0016] Preferably, a support base is fixedly connected to the sliding base, the workbench is hinged to the support base, a plurality of evenly distributed fixing claws are arranged on the workbench, and a hydraulic motor is provided on the workbench, and the hydraulic motor is used to drive the horizontal rotation of the workbench.

[0017] Preferably, the PLC control box is provided with a position selection knob, a display screen, an equipment start / stop button and an operating lever.

[0018] Preferably, the control box is provided with four control gears. When the first driving component drives the sliding base to move to a preset position, the encoder sends a corresponding signal to the control box, and the control box controls the first driving component to stop driving and make the sliding base stay at the preset position. There are four preset positions, corresponding to four sizes of tires respectively.

[0019] Compared with the prior art, the utility model has achieved the following beneficial technical effects:

[0020] The tire changing machine provided by the utility model is provided with a control box with a solidified program or a PLC type. When the operator determines the parameters of the tire to be disassembled and installed, the operator controls the position selection knob on the control box, and the corresponding distance parameters are displayed on the display screen to start the tire changing machine. When the sliding base performs horizontal sliding, the single-chip computer system in the control box will issue a command to the solenoid valve connected to the first hydraulic cylinder to open the solenoid valve, and the first hydraulic cylinder drives the sliding base to slide horizontally. The horizontal sliding of the sliding base drives the rack to move horizontally. Due to the meshing action of the rack and the toothed disc on the encoder, the toothed disc on the encoder will rotate accordingly. The encoder records the angular displacement of the toothed disc in real time and sends the signal to the control box. The length of the workbench driven by the sliding base is equal to the length of the horizontal movement of the rack. Since the toothed disc performs synchronous rotation on the rack, the length of the horizontal movement of the rack is related to the angular displacement of the toothed disc. Therefore, the precise positioning of the length of the workbench only requires the precise positioning of the angular displacement of the toothed disc. When the angular displacement of the gear disc matches the preset distance parameter of the tire, the encoder will feed back the signal to the control box, and the single-chip computer system will issue a command to close the solenoid valve, so that the first hydraulic cylinder stops driving, so that the workbench stops sliding, so as to achieve accurate positioning of the horizontal moving distance of the workbench. When disassembling and assembling tires, the operation is simple, time-saving and labor-saving, and it is more convenient to disassemble and assemble tires of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a front view of the three-dimensional structure of the tire changing machine in the utility model;

[0023] Figure 2 It is a three-dimensional structural schematic diagram of the tire changing machine in the utility model from a rear view;

[0024] Figure 3 It is a structural schematic diagram of the sliding base connection part of the tire changing machine in the utility model;

[0025] Figure 4 It is a structural schematic diagram of the control box of the tire changing machine in the utility model.

[0026] In the figure: 1-T-shaped base, 2-support column, 3-sliding base, 4-workbench, 5-rack, 6-encoder, 7-toothed disc, 8-control box, 9-column sleeve, 10-tire removing part, 11-tire loading part, 12-sliding column, 13-first hydraulic cylinder, 14-second hydraulic cylinder, 15-third hydraulic cylinder, 16-hydraulic pump station, 17-solenoid valve, 18-slide rail, 19-support seat, 20-fixed claw, 21-hydraulic motor, 22-position selection knob, 23-display screen, 24-equipment start and stop button, 25-operating lever. DETAILED DESCRIPTION

[0027] 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.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] The utility model provides a tire changing machine, such as Figure 1-Figure 4As shown, it includes a fixedly connected T-shaped base 1 and a supporting column 2, the supporting column 2 is fixedly connected at the intersection of the T-shaped base 1, and a sliding base 3 is slidably connected to one side of the T-shaped base 1 corresponding to the supporting column 2. A workbench 4 is hinged on the sliding base 3 so that the workbench 4 can do an axis-turning movement on the sliding base 3. When the tire is disassembled, the tire to be disassembled will be clamped on the workbench 4, and the turning of the workbench 4 can change the placement direction of the tire. A first driving component is provided on the T-shaped base 1, and the first driving component is used to drive the sliding base 3 to slide horizontally on the T-shaped base 1. In this way, the sliding base 3 drives the tire on the workbench 4 to move horizontally when it moves horizontally, and then the tire is disassembled. A rack 5 is fixedly connected to the upper surface of the sliding base 3, an encoder 6 is fixedly connected to the T-shaped base 1, and a toothed disc 7 is provided on the output shaft of the encoder 6, and the toothed disc 7 can mesh with the rack 5. The encoder 6 is connected to the PLC control box 8, and the first driving component is connected to the drive station and the PLC control box 8 respectively. When the sliding base 3 slides horizontally, it will drive the rack 5 to move. Due to the meshing action of the rack 5 and the toothed disc 7, the toothed disc 7 on the encoder 6 will rotate accordingly. The rotation angle of the toothed disc 7 will be fed back to the encoder 6. The encoder 6 will feed back the angle signal to the PLC control box 8. The PLC control box 8 controls the first driving component of the drive station to stop driving the sliding base 3, so that the workbench 4 stops sliding, so as to achieve accurate positioning of the horizontal movement distance of the workbench 4. In this device, the length of the workbench driven by the sliding base is equal to the horizontal movement length of the rack. Since the toothed disc performs synchronous rotation on the rack, the horizontal movement length of the rack is related to the angular displacement of the toothed disc. Therefore, if you want to achieve accurate positioning of the length of the workbench, you only need to accurately locate the angular displacement of the toothed disc.

[0030] In the specific application process, after the tire is rolled over, the wheel hub is clamped on the workbench 4, and the PLC control box 8 is operated to turn the workbench 4 into a horizontal direction, and then the tire is turned into a horizontal direction, and then the PLC control box 8 is operated. The control box 8 is provided with four control gears. When the first driving component drives the sliding base 3 to move to the preset position, the encoder 6 sends a corresponding signal to the control box 8, and the control box controls the first driving component to stop driving and make the sliding base 3 stay at the preset position. There are four preset positions, corresponding to four sizes of tires. According to the tire model to be disassembled and assembled, a matching preset distance value is selected from the four numerical sizes of 16cm, 17.5cm, 19.5cm and 22.5cm. The PLC control box 8 will feed back the preset distance value signal to the encoder 6, and at the same time, the PLC control box 8 will feed back the driving signal to the first driving component. After receiving the driving signal, the first driving component will drive the sliding base 3 to slide horizontally, thereby driving the tire on the workbench 4 to slide horizontally. The sliding of the sliding base 3 will also drive the horizontal movement of the rack 5, thereby driving the rotation of the gear disc. The encoder 6 will feed back the angular displacement of the gear disc to the PLC control box 8 in real time. When the angular displacement of the gear disc is equal to the horizontal movement length of the rack at the preset position, the encoder 6 will feed back the signal to the PLC control box 8. The PLC control box 8 will transmit a stop driving signal to the first drive component, and then the first drive component stops driving, the sliding base 3 stops sliding, and the tire on the workbench 4 reaches the preset position, and then the tire can be disassembled and assembled.

[0031] In this embodiment, the upper end of the support column 2 is sleeved with a column sleeve 9, and a disassembly assembly component is fixedly connected to the column sleeve 9. The support column 2 is provided with a second driving component, and the second driving component is used to drive the column sleeve 9 to rise and fall on the support column 2; the disassembly assembly component includes a tire removing component 10 and a tire installing component 11, and a sliding column 12 is axially provided at the upper end of the column sleeve 9, and the tire removing component 10 and the tire installing component 11 are hinged on the sliding column 12, and the second driving component is respectively connected to the driving station and the PLC control box 8. The second driving component drives the column sleeve 9 to perform lifting and lowering movements on the support column 2, thereby driving the disassembly assembly component to move up and down, and moving the disassembly assembly component to a height that is convenient for the operator to operate, thereby realizing the automatic control and humanized operation of the equipment, and saving manpower. The tire removing component 10 and the tire installing component 11 are hinged and locked on the sliding column 12, and the operator can rotate the corresponding disassembly assembly component when disassembling the tire, thereby realizing the technical effect of simple structure and easy operation.

[0032] In this embodiment, a third driving component is further provided on the T-shaped base 1, and the third driving component is used to drive the workbench 4 to perform an axis-turning motion on the sliding base 3, and the third driving component is respectively connected to the driving station and the PLC control box 8. The third driving component can drive the tire on the workbench 4 to turn to a horizontal direction, and then perform a disassembly and assembly operation on the tire, thereby realizing automatic control of the equipment and saving manpower.

[0033] In this embodiment, the first driving component is a first hydraulic cylinder 13, the fixed end of the first hydraulic cylinder 13 is connected to the T-shaped base 1, and the movable end of the first hydraulic cylinder 13 is connected to the sliding base 3; the second driving component is a second hydraulic cylinder 14, the fixed end of the second hydraulic cylinder 14 is connected to the supporting column 2, and the movable end of the second hydraulic cylinder 14 is connected to the top of the column sleeve 9; the third driving component is a third hydraulic cylinder 15, the fixed end of the third hydraulic cylinder 15 is connected to the sliding base 3, and the movable end of the third hydraulic cylinder 15 is connected to the workbench 4. The driving station is a hydraulic pump station 16, which provides hydraulic oil for the first hydraulic cylinder 13, the second hydraulic cylinder 14 and the third hydraulic cylinder 15. The hydraulic pump station 16 is connected to the oil line of the first hydraulic cylinder 13 and is provided with a solenoid valve 17, and the solenoid valve 17 is used to control the oil supply of the first hydraulic cylinder 13.

[0034] In the specific application process, the workbench 4 is in a state where the wheel hub is clamped on the workbench 4 after the tire is rolled over, the hydraulic pump station 16 is turned on, the third hydraulic cylinder 15 is operated, and the third hydraulic cylinder 15 drives the workbench 4 to perform an axis-turning motion relative to the sliding base 3, so that the workbench 4 is turned into a horizontal direction, and then the first hydraulic cylinder 13 is operated, and the first hydraulic cylinder 13 drives the sliding base 3 to slide horizontally along the T-shaped base 1, and the encoder 6 feedbacks the signal, so that the sliding base 3 stops sliding at a position matching the tire model, and then the second hydraulic cylinder 14 is operated, and the second hydraulic cylinder 14 drives the column sleeve 9 to move downward, and the column sleeve 9 drives the disassembly and assembly components to move downward, and after moving to a suitable position above the tire, the tire is disassembled and assembled. This equipment adopts hydraulic drive, and the hydraulic devices are all external designs, which makes maintenance more convenient. A solenoid valve 17 is set on the oil circuit of the first hydraulic cylinder 13, and the solenoid valve 17 controls the oil supply of the hydraulic cylinder alone, thereby controlling the start and stop of the sliding base 3, realizing the precise positioning of the workbench 4, making the structure simple and the operation more convenient.

[0035] In this embodiment, the hydraulic pump station 16 and the PLC control box 8 are fixedly connected to the T-shaped base 1 and are respectively located on both sides of the support column 2, making the structure of the equipment more compact and easy to operate. The PLC control box can also be replaced by a single-chip control box with a solidified program.

[0036] In this embodiment, a slide rail 18 is provided on the top surface of the side of the T-shaped base 1 corresponding to the support column 2 so that the sliding base 3 slides along the slide rail 18 , thereby ensuring the stability of the sliding base 3 sliding on the T-shaped base 1 .

[0037] In this embodiment, a support base 19 is fixedly connected to the sliding base 3, and a workbench 4 is hinged on the support base 19. A plurality of evenly distributed fixing claws 20 are provided on the workbench 4, and a hydraulic motor 21 is provided on the workbench 4. The hydraulic motor 21 is used to drive the horizontal rotation of the workbench 4. The fixing claws 20 clamp the tire, and the hydraulic motor 21 is connected to the foot switch. After the horizontal and vertical positions of the tire are positioned, the foot switch is activated, so that the hydraulic motor 21 drives the workbench 4 to drive the tire to rotate horizontally, thereby realizing the disassembly and assembly of the tire by the disassembly and assembly assembly.

[0038] In this embodiment, the PLC control box 8 is provided with a position selection knob 22, a display screen 23, a device start / stop button 24, and an operating lever 25. After the operator determines the model and size of the tire to be disassembled and assembled, the position selection knob 22 is rotated, and the corresponding distance value is displayed on the display screen 23. The single-chip microcomputer system in the PLC control box 8 receives the instruction and feeds back the signal to the corresponding execution component. The operating lever 25 is used to apply the execution instruction to the corresponding execution component, which makes the operation more convenient and the positioning more accurate.

[0039] The utility model uses specific examples to illustrate the principle and implementation of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A tire changing machine, comprising a fixedly connected T-shaped base and a supporting column, characterized in that: A sliding base is slidably connected to one side of the T-shaped base corresponding to the supporting column, a workbench is hinged on the sliding base, and a first driving component is provided on the T-shaped base, and the first driving component is used to drive the sliding base to slide horizontally on the T-shaped base; A rack is fixedly connected to the upper surface of the sliding base, an encoder is fixedly connected to the T-shaped base, a gear disc is provided on the output shaft of the encoder, the gear disc is meshed with the rack, the encoder is connected to the control box, and the first driving component is respectively connected to the driving station and the control box.

2. The tire changing machine according to claim 1, characterized in that: The upper end of the supporting column is sleeved with a column sleeve, and a disassembly and assembly assembly is fixedly connected to the column sleeve. A second driving component is provided on the supporting column, and the second driving component is used to drive the lifting and lowering of the column sleeve on the supporting column; the disassembly and assembly assembly includes a tire removing part and a tire installing part, and a sliding column is axially provided at the upper end of the column sleeve, and the tire removing part and the tire installing part are hinged on the sliding column, and the second driving component is respectively connected to the driving station and the control box.

3. The tire changing machine according to claim 2, characterized in that: The T-shaped base is also provided with a third driving component, and the third driving component is used to drive the workbench to perform an axis-around-axis flipping motion on the sliding base, and the third driving component is respectively connected to the driving station and the control box.

4. The tire changing machine according to claim 3, characterized in that: The first driving component is a first hydraulic cylinder, a fixed end of which is connected to the T-shaped base, and a movable end of which is connected to the sliding base; the second driving component is a second hydraulic cylinder, a fixed end of which is connected to the supporting column, and a movable end of which is connected to the top end of the column sleeve; the third driving component is a third hydraulic cylinder, a fixed end of which is connected to the sliding base, and a movable end of which is connected to the workbench.

5. The tire changing machine according to claim 4, characterized in that: The driving station is a hydraulic pump station, which provides hydraulic oil for the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder. A solenoid valve is provided on the oil line connecting the hydraulic pump station to the first hydraulic cylinder, and the solenoid valve is used to control the oil supply to the first hydraulic cylinder.

6. The tire changing machine according to claim 5, characterized in that: The hydraulic pump station and the control box are fixedly connected to the T-shaped base and are respectively located on both sides of the supporting column.

7. The tire changing machine according to claim 1, characterized in that: A slide rail is arranged on the top surface of one side of the T-shaped base corresponding to the supporting column so that the sliding base can slide along the slide rail.

8. The tire changing machine according to claim 1, characterized in that: A support base is fixedly connected to the sliding base, the workbench is hinged on the support base, a plurality of evenly distributed fixing claws are arranged on the workbench, and a hydraulic motor is arranged on the workbench, and the hydraulic motor is used to drive the horizontal rotation of the workbench.

9. The tire changing machine according to claim 1, characterized in that: The control box is provided with a position selection knob, a display screen, an equipment start / stop button and an operating lever.

10. The tire changing machine according to claim 1, characterized in that: The control box is provided with four control gears. When the first driving component drives the sliding base to move to a preset position, the encoder sends a corresponding signal to the control box, and the control box controls the first driving component to stop driving and make the sliding base stay at the preset position. There are four preset positions, corresponding to four sizes of tires respectively.

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