CN211995024U - Integral structure of a tire changer carriage - Google Patents

Abstract

The utility model relates to an integral structure of a sliding frame of a tire changer, comprising a sliding frame of a tire changing machine, a tire prying mechanism and a crowbar assembly located below the tire prying mechanism. The tire prying mechanism is mounted on the sliding frame and can be opposite to the sliding frame. To perform telescopic movement, the crowbar assembly is horizontally installed on the side of the carriage and can slide forward and backward relative to the carriage; the carriage is provided with a drive for driving the tire prying mechanism and the crowbar assembly to perform telescopic motion relative to the carriage The sliding frame is also provided with a pressing wheel assembly for preventing the toe portion of the tire that is about to be pressed into the rim from touching the edge of the rim when the tire is loaded. The tire prying mechanism and the crowbar assembly of the overall structure of the sliding frame of the utility model can perform independent telescopic movement relative to the sliding frame, ensuring that the tire prying mechanism and the crowbar assembly can also be suitable for the disassembly of smaller-sized tires, with a wide range of application and practicability. Strong, flexible, and can effectively protect the toe of the tire when loading the tire.

Description

Integral structure of a tire changer carriage

technical field

The utility model relates to an integral structure of a sliding frame of a tire changer.

Background technique

The tire prying device with crowbar and the crowbar assembly with crowbar on the tire changer are installed on the sliding frame of the tire changer. The tire prying device and the crowbar assembly can only be lifted up and down with the carriage. It cannot extend forward independently, which limits the working range of the tire lever device and the lever assembly. As a result, the current tire changer is only suitable for removing tires with a rim diameter of more than 600mm, mainly truck tires, and cannot be used for disassembly. Smaller size tires; and when the existing tire changer is loading tires, the toe portion of the tire and the edge of the rim are prone to scratches, resulting in damage to the tire lip.

Utility model content

In view of this, the purpose of the present invention is to provide an integral structure of the tire changer carriage with wide application range, strong practicability and good flexibility.

The utility model adopts the following scheme to realize: an integral structure of a tire changer carriage, comprising a tire changer carriage, a tire prying mechanism and a crowbar assembly located below the tire prying mechanism, the tire prying mechanism is mounted on the carriage and It can perform telescopic motion relative to the carriage, and the crowbar assembly is horizontally installed on the side of the carriage and can slide forward and backward relative to the carriage. A driving device for telescopic motion; the sliding frame is also provided with a pressing wheel assembly for preventing the toe portion of the tire that is about to be pressed into the rim from touching the edge of the rim when the tire is loaded.

Further, the tire prying mechanism and the crowbar assembly are driven by the same driving device for telescopic motion, and the side of the carriage is provided with a linkage mechanism that realizes the synchronous expansion and contraction of the tire prying mechanism and the crowbar assembly; A driving device drives a movable seat plate, the tire prying mechanism is mounted on the movable seat plate, the driving device includes a guide shaft arranged obliquely and a driving cylinder parallel to the guide shaft, and the movable seat plate is provided with The guide sleeve part is slidingly matched with the guide shaft, and the driving end of the drive cylinder is connected to the guide sleeve part of the movable seat plate, so that when the drive cylinder is extended and retracted, the tire lever mechanism is driven to extend and retract.

Further, the linkage mechanism includes a connecting rod, a swing arm and an executive rod. The upper end of the connecting rod is hinged to the driving end of the driving cylinder, the lower end of the connecting rod is hinged with the upper part of the swing arm, and the lower part of the swing arm is hinged to the side of the carriage so that the drive can be driven. When the cylinder is telescopic, the swing arm is pushed forward and backward by the connecting rod, and both ends of the executed rod are hinged on the middle part of the swing arm and the crowbar assembly respectively.

Further, the crowbar assembly includes a sleeve mounted on the side of the carriage and can slide back and forth relative to it, and a crowbar sleeved in the sleeve and rotatably matched with it; the pinch roller assembly includes a rear end hinged to the carriage. The swing frame which can swing left and right relative to the swing frame is installed on the swing frame and is pressed on the edge of the rim with the following end face and the outer peripheral part is pressed against the tire toe part of the rim to be pressed into the rim.

Further, a sliding block is sleeved on the swing frame, a vertical through hole is opened on the sliding block, a connecting shaft that can slide relative to the vertical through hole is coaxially penetrated, and the bottom end of the connecting shaft extends vertically. The bottom of the through hole is coaxially connected with the pressure roller through the bearing, the top of the connecting shaft protrudes from the top of the vertical through hole and a limit flange protrudes from the periphery, and a spring is sleeved on the connecting shaft between the pressure roller and the sliding block; The linkage rod is connected between the sliding block and the sleeve of the crowbar assembly, and the two ends of the linkage rod are respectively hinged on the sleeve and the sliding block.

Further, the tire prying mechanism includes a bracket, the front end of the bracket is installed with a prying plate, the middle part of the prying plate is hinged on the bracket, and the two ends of the prying plate have two hooks with different sizes for prying the tire and the prying plate is The hooks at both ends face oppositely; the bracket is provided with a limiting mechanism capable of keeping the skid plate in an inclined state or a vertical state.

Further, the limit mechanism includes a limit bar that can swing up and down and can withstand the upper part of the skid plate when it swings down to restrict its downward rotation and keep the skid plate in an inclined state; A limit ejector rod that swings up and down and uses the front end against the upper part of the skid plate to limit its backward rotation when the skid plate is in a vertical state.

Further, the middle part of the prying board is hinged on the bracket through a hinge shaft that is rotatably matched with the bracket, the prying board and the hinged shaft rotate synchronously, and one end of the hinged shaft is provided with the prying board to prevent the prying board when it is in an inclined and vertical state. The upper part is a spring damping mechanism that rotates away from the limit crossbar and the limit top rod; the spring damping mechanism includes a spring arranged along the diameter direction of the hinge shaft, the middle part of the spring is connected to the end of the hinge shaft, and the side part of the bracket is provided with When the prying board is in an inclined and vertical state, it can withstand a bayonet at one end of the spring, and a roller is installed on the bayonet.

Further, the length of one end of the prying board is less than the length of the other end, and the curvature of the hook at the shorter end is greater than the curvature of the hook at the longer end. The length is 100~200mm.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The tire prying mechanism and the crowbar assembly can perform independent telescopic movement relative to the carriage, ensuring that the tire prying mechanism and the crowbar assembly can also be used for the disassembly of smaller-sized tires, with a wide range of applications, strong practicability and good flexibility. ;

(2) When the tire is loaded, it has a protective effect on the toe of the tire to prevent it from being damaged by scratching with the edge of the rim;

(3) The tire prying mechanism and the crowbar assembly realize synchronous telescopic movement through linkage, which simplifies the structure and makes the structure more compact;

(4) The skid plate with double-head structure can be selected and used according to the size of the tire, which can reduce the difficulty of operation, save the time of tire removal, and reduce the damage to the toe of the tire.

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below through specific embodiments and related drawings.

Description of drawings

Fig. 1 is the structural side view of the tire changer with the overall structure of the sliding frame according to the embodiment of the present invention;

2 is a side view of the overall structure of the carriage according to the embodiment of the present invention;

Fig. 3 is the working schematic diagram of the vertical state limit ejector rod of the prying plate in the embodiment of the present utility model;

4 is a schematic diagram of the structure of a skid plate in an embodiment of the present invention;

5 is a top view of the pressure roller assembly in the embodiment of the present invention;

Fig. 6 is the schematic diagram of the use state of the crowbar in the embodiment of the present utility model when the tire is removed;

7 is a schematic diagram of the use state of the crowbar in the embodiment of the present invention;

8 is a schematic diagram of the working state of the crowbar and the pressing wheel in the embodiment of the present invention;

Description of the labels in the figure: 100-slide, 110-mount, 200-bracket, 210-pry board, 211-hook, 212-hinged shaft, 220-limit bar, 221-link, 230-limit Mandrel, 240-spring, 250-bayonet, 251-roller, 260-limit stopper, 300-movable seat plate, 310-guide shaft, 320-drive cylinder, 330-guide sleeve, 340-connecting rod, 350-swing arm, 360-executive rod, 400-sleeve, 410-crowbar, 420-guide bar, 500-tire, 600-rim, 700-pressure wheel assembly, 710-oscillating frame, 720-pressure wheel, 730- Slide block, 740-connecting shaft, 750-spring, 760-linkage rod, 770-limit stop.

Detailed ways

As shown in Figures 1-8, an overall structure of a tire changer carriage includes a tire changer carriage 100, a tire prying mechanism and a crowbar assembly located below the tire prying mechanism, and the tire prying mechanism is mounted on the carriage 100. and can perform telescopic movement relative to the carriage, the crowbar assembly is horizontally installed on the side of the carriage and can slide forward and backward relative to the carriage; the carriage is provided with a mechanism to drive the tire lever and the crowbar assembly to slide A drive device for the frame to perform telescopic movement; the sliding frame is also installed with a pressing wheel assembly 700 to prevent the toe portion of the tire that is about to be pressed into the rim from touching the edge of the rim during tire loading; the tire changer sliding frame The tire lever mechanism in the overall structure is used for tire removal, and the lever assembly is used for tire removal and tire installation. When removing the tire, the tire lever mechanism first prys out the upper toe of the tire from the rim, and the lever assembly is used for tire removal. Then push the toe of the lower side of the tire out of the rim, and the crowbar assembly presses the tire toe into the rim when installing the tire; and when installing the tire, due to the function of the pinch roller assembly, it can prevent the tire from being pressed in by the crowbar assembly. The tire toe part of the rim touches the edge of the rim, which can effectively protect the tire toe part and avoid damage.

The tire prying mechanism and the crowbar assembly in the overall structure of the tire changer carriage of the utility model can not only move up and down with the tire changer carriage, but also can perform telescopic movement relative to the carriage, so that the prying plate of the tire prying mechanism can Extending a farther distance forward, the crowbar assembly can also extend a farther distance, ensuring that the tire lever mechanism and the crowbar assembly can also be applied to the disassembly of smaller-sized tires, with a wide range of applications and strong practicability. Good flexibility.

In this embodiment, the tire prying mechanism and the crowbar assembly are driven by the same driving device for telescopic motion, and the side of the carriage is provided with a linkage mechanism to realize the synchronous expansion and contraction of the tire prying mechanism and the crowbar assembly; One tire is used for disassembly and assembly of the stick assembly. When the tire size becomes smaller, the action positions of the two also change together. Therefore, the linkage mechanism is used to realize the synchronous movement of the tire prying mechanism and the crowbar assembly, which can reduce the power source on the tire changer. The simplified structure also makes the structure more compact.

In this embodiment, the crowbar assembly includes a sleeve 400 installed on the side of the carriage and able to slide back and forth relative to it, and a crowbar 410 sleeved in the sleeve and rotatably matched with it. The front end of the crowbar is tapered. Obtuse structure.

In this embodiment, the side of the carriage is provided with a movable seat plate 300 driven and moved by a driving device, the tire prying mechanism is mounted on the movable seat plate 300, and the driving device includes an inclined guide shaft 310 and a drive cylinder 320 parallel to the guide shaft 310, the drive cylinder adopts a hydraulic cylinder, the movable seat plate 300 is provided with a guide sleeve portion 330 slidingly matched with the guide shaft 310, and the drive end of the drive cylinder 320 is connected to the The guide sleeve portion 330 of the movable seat plate 300 is placed on the guide sleeve portion 330 of the movable seat plate 300 to drive the tire prying mechanism to telescopically move when the driving cylinder 320 is stretched. The reciprocating telescopic motion in the inclined direction is also the reciprocating telescopic motion parallel to the direction of the guide shaft; one end of the driving cylinder 320 is hinged on the guide sleeve part 330, and the other end is hinged on the upper end of the guide shaft 310; The guide shaft fixing seat of the shaft; due to the small diameter of the tire, the width specification is also smaller, therefore, the driving device realizes the lifting movement while realizing the front and rear movement of the tire prying mechanism, and in one step, to simplify the structure of the driving device, At the same time, the use of the inclined drive cylinder can also make the structure more compact, which can prevent the overall size of the tire changer from increasing too much in the front and rear directions. It is driven by the horizontal cylinder and the vertical cylinder to achieve independent forward and backward movement, telescopic and lifting movements.

In this embodiment, the angle between the guide shaft and the horizontal direction is 65°~70°, preferably 68°, to ensure that the tire changer tire prying device can be applied to dismantle tires with a rim diameter of 450 mm or more, and can be used in More size tires.

In this embodiment, the linkage mechanism is located above the crowbar assembly. The linkage mechanism includes a connecting rod 340, a swing arm 350 and an execution rod 350. The upper end of the connecting rod 340 is hinged to the driving end of the driving cylinder 320, and the lower end of the connecting rod 340 is connected to the driving end of the driving cylinder 320. The upper part of the swing arm 350 is hinged, and the lower part of the swing arm 350 is hinged to the side of the carriage 100, so that when the drive cylinder is extended and retracted, the swing arm is pushed forward and backward by the connecting rod, and both ends of the executed rod are hinged on the middle part of the swing arm and the crowbar assembly respectively. The rod is hinged on the upper side of the sleeve of the crowbar assembly; when the driving cylinder is extended, the upper part of the swing arm is pushed to swing forward by the connecting rod, and then the execution rod is pushed forward, and the sleeve is pushed forward and extended.

In this embodiment, the side of the carriage 100 is welded with two mounting seats 110 for mounting the crowbar assembly, one behind the other, and the two ends of the sleeve 400 of the crowbar assembly are mounted on the two mounting seats 110 The front end side of the sleeve 400 is provided with a guide bar 420 parallel to its axis line, and the side of the front mounting seat mounting hole is provided with a sliding groove for sliding fit with the guide bar 420. , so as to limit the rotation of the sleeve, and the lower part of the swing arm is hinged on the rear mounting seat.

In this embodiment, the pinch roller assembly is located on the front side of the carriage. The pinch wheel assembly 700 includes a swing frame 710 whose rear end is hinged on the carriage 100 and can swing left and right relative to the swing frame 710 , and an end face mounted on the swing frame 710 with the following The pressure roller 720 is pressed on the edge of the rim and the outer periphery is pressed into the tire toe portion of the rim; when loading the tire, the crowbar is pressed on the tire, while the pressure roller is pressed on the edge of the rim and the side of the pressure roller is on top The toe of the tire is about to be pressed into the rim to prevent the toe of the tire from directly contacting the edge of the rim. Since both the crowbar assembly and the pressing wheel assembly are installed on the carriage, they can be lifted and lowered synchronously with the carriage. Therefore, it can be ensured that when the crowbar is pressed against the tire, the pressing wheel can also press the rim.

In this embodiment, a sliding block 730 is sleeved on the swing frame 710, a vertical through hole is formed on the sliding block, and a connecting shaft 740 which can slide relative to the vertical through hole is coaxially penetrated. The bottom end protrudes from the bottom of the vertical through hole and is coaxially connected to the pressing wheel 720 through the bearing. The top end of the connecting shaft protrudes from the top of the vertical through hole and a limit flange protrudes from the periphery. The connection between the pressing wheel and the sliding block A spring 750 is sleeved on the shaft; on the one hand, the function of the above spring ensures that the pressure roller has a certain pressure on the rim, and on the other hand, it also has a certain buffering effect on the pressure roller to prevent the pressure roller assembly from being damaged. During tire operation, in order to avoid the interference of the pinch roller assembly on the tire prying mechanism, the swing frame can be swung to the right to make way for the tire prying mechanism.

In this embodiment, a linkage rod 760 is connected between the sliding block 730 and the sleeve of the crowbar assembly, and both ends of the linkage rod are hinged on the sleeve and the sliding block, respectively; The linkage function of the wheel, when loading tires with different diameters, can realize the adjustment of the position of the pinch roller when the crowbar is extended or retracted.

In this embodiment, the rear end hinge part of the swing frame is provided with a limit block 770 for restricting the swing frame to the limit position of swinging to the left, and the limit position of swinging the swing frame to the left is about 12° left from the middle, The limit stop will stand against the carriage to limit the swing frame to continue swinging to the left. This position is also the working position of the swing frame. When the tire changer is working, the chuck on the tire changer drives the tire to rotate counterclockwise (top view), so After the swing frame is held up by the limit stop, it will not continue to swing to the left with the rotation of the tire.

In this embodiment, the tire prying mechanism includes a bracket 200 connected to the movable seat plate, the rear end of the bracket is hinged on the movable seat plate and can swing left and right, and the rear end hinge portion of the bracket is provided to limit the bracket The limit baffle 260 at the limit position of swinging to the left, the limit position of the bracket swinging to the left is vertical to the front side of the carriage (that is, when it is consistent with the front and rear directions), the limit baffle will stand against the left side of the movable seat plate to limit The bracket continues to swing to the left, and this position is also the working position of the tire prying mechanism. When the tire changer is working, the chuck on the tire changer drives the tire to rotate counterclockwise (top view), so the bracket is not supported by the limit baffle. It will continue to swing to the left with the rotation of the tire; the front end of the bracket 200 is installed with a prying plate 210, the middle of the prying plate 210 is hinged on the bracket, and the two ends of the prying plate 210 have two hooks 211 with different sizes for prying the tire. And the hooks 211 at both ends of the prying board 210 face oppositely; the bracket 200 is provided with a limiting mechanism that can keep the prying board 210 in an inclined state or a vertical state with a low front and a high rear; the prying mechanism on the tire prying mechanism of the present invention The plate has two hooks with different sizes, which are used for tires of different specifications. One end of the hook is suitable for tires with an outer diameter of 800mm (including 800mm), and the other end of the hook is suitable for tires with an outer diameter of less than 800mm. The skid plate is installed on the bracket by rotating, and can be switched to be used by rotation. When the skid plate is in an inclined state, the tire remover inserts the hook of the skid plate between the tire and the rim, and then rotates the skid plate to the vertical state. The hook portion is used to pry the toe of the tire out of the rim; therefore, the tire prying mechanism of the present invention has a prying board with a double-head structure corresponding to tires of different specifications, which can be selected and used according to the size of the tire, and has better flexibility and practicability. Cooperating with hooks of more suitable size, it can reduce the difficulty of operation, save the time of tire removal, and reduce the damage to the toe of the tire.

In this embodiment, the limiting mechanism includes a limiting cross bar 220 that can swing up and down and can hold up against the upper part of the skid plate when it is swayed to restrict its downward rotation and keep the skid plate in an inclined state; the limiting cross bar The top of 220 is provided with a limit ejector rod 230 that can swing up and down and is used to hold the upper part of the pry plate 210 at the front end to limit its backward rotation when the pry plate is in a vertical state. 230 is pressed on the hook at the upper end of the prying board; as shown in FIG. 1 , when the limiting cross bar 220 and the limiting ejector bar 230 are both in the upward swing state, the prying board can be moved clockwise or counterclockwise in both directions under the manual toggle operation. Rotate the whole circle; when the limit bar 220 is in the sway state, the prying board can only rotate clockwise for a full circle under the manual toggle operation, and the limit bar is pulled up from time to time during the rotation, and the reverse is reversed. When the clockwise is rotated, the upper part of the prying board will be held up by the limit bar; when the limit bar 220 and the limit ejector rod are both in the swaying state, the pry board can still be rotated in the clockwise direction for the entire circumference under the manual toggle operation. Rotate, and pull up the limit bar and the limit ejector bar from time to time during the rotation, and when turning counterclockwise, the upper part of the prying board will be held up by the limit ejector bar.

In this embodiment, the limit cross bar 220 is fixedly connected with a connecting rod 221 extending backward, and the rear end of the connecting rod is hinged on the bracket, so that the limit cross bar can swing up and down around the hinge point of the connecting rod; The two sides of the bracket 200 are provided with grooves that cooperate with the two ends of the limit bar; the rear end of the limit top rod 230 is hinged on the bracket, so that the limit top rod can swing its hinge point up and down.

In this embodiment, the middle of the prying plate 210 is hinged to the bracket through a hinge shaft 212 that is rotatably matched with the bracket. The prying plate and the hinge shaft 212 are synchronously rotated through the cooperation of the key and the keyway. A spring damping mechanism used to prevent the upper part of the skid from rotating away from the limit bar and the limit top rod when the board is in an inclined and vertical state; the function of the spring damping structure is to rotate the skid clockwise to the top of the skid When it is in a tilted state after passing the limit bar, a counterclockwise torque is provided to the pry board, so that the upper part of the pry board can abut against the limit bar, so that the pry board is kept in an inclined working state, and the lower part of the pry board is prevented from being tilted. Swing downwards; and when the skid plate rotates clockwise to the vertical state after the upper part of the skid plate has just passed the limit ejector rod, it also provides a counterclockwise torsion to the skid plate, so that the upper part of the skid plate can abut against the limiter. Position the ejector bar to keep the prying board in a vertical working state to prevent the prying board from rotating in a clockwise direction.

In this embodiment, the spring damping mechanism includes a spring 240 arranged along the diametrical direction of the hinge shaft, a sleeve is welded to the end of the hinge shaft, the spring is passed through the sleeve and passes through the side of the sleeve. Screw and screw spring, the middle of the spring 240 is connected to the end of the hinge shaft, the side of the bracket is provided with a bayonet 250 that can withstand one end of the spring when the pry is in an inclined and vertical state, and a roller is installed on the bayonet 251; When the prying board is in an inclined and vertical state under manual operation, the rear end of the spring is all out on the underside of the bayonet, so as to ensure that the spring provides a counterclockwise torque to the prying board, so that the prying board can be In the case of operation, it can be stably maintained in the inclined and vertical state. Only when the skid plate is manually moved and continues to rotate clockwise, the spring will be released from the latch; therefore, both ends of the spring must have a certain length to ensure that the skid plate is tilted and rotated. In the vertical state, the end of the spring is not separated from the bayonet. In this embodiment, the length of both ends of the spring is 4-5cm, and the center distance between the bayonet and the hinge shaft is about 3cm.

In this embodiment, the length of one end of the prying board is shorter than the length of the other end, and the curvature of the hook portion at the shorter end is greater than the curvature of the hook portion at the longer end, and the hooks at both ends of the prying board are arc-shaped, The length H2 of the longer end of the prying board is 30~80mm longer than the length H1 of the short end, and the length H2 of the longer end of the prying board is 150~250mm, preferably 200mm; the length H1 of the shorter end is 100~200mm, preferably 165mm; The inner radius R2 of the hook portion is 145~150mm, preferably 148mm, and the inner radius R1 of the hook portion at the relatively end of the prying plate is 40~45mm, preferably 43mm; The smaller hook portion is 70 to 80 mm, preferably 75 mm.

In the working process of the tire prying mechanism, when the diameter of the disassembled tire is not less than 800mm, the hook part with the longer end of the prying board and the hook part with a small curvature of the hook part is used for tire disassembly operation; when the diameter of the disassembled tire is less than 800mm, the prying plate is used The short end of the plate and the hook with a large hook part are used for tire removal; the specific tire removal operation process: adjust the tire mounted on the tire changer tire chuck to a tilted state of low front and high back, and the skid plate is also Adjust to the inclined state where the front end is inclined downward, insert the hook of the pry plate between the tire and the rim, and then adjust the tire to a horizontal state and rotate the pry plate to a vertical state to control the tire changer carriage Raise a certain height, use the hook of the prying plate to pry the tire toe out from the rim, and then the tire chuck drives the tire to rotate, so that the entire toe of the tire is detached from the rim.

The working process of the overall structure of the tire changer sliding frame of the utility model is that when the tire is removed, when the diameter of the disassembled tire is not less than 800 mm, the tire is removed by using the hook part with the longer end of the prying board and the hook part with a smaller curvature; The diameter of the tire is less than 800mm, the short end of the skid plate and the hook part with a large hook part are used for tire removal, and the tire mounted on the tire chuck of the tire changer is adjusted to a tilted state of low front and high back, and the skid is also Adjust to the inclined state that the front end is inclined downward, adjust the height of the carriage according to the diameter of the rim of the tire to be removed, and adjust its position by controlling the tire prying mechanism and the crowbar assembly through the driving device. Align the pry plate on the tire mechanism with the position between the tire toe and the rim, and then start the tire removal operation; when installing the tire, use the crowbar assembly to press the tire toe into the rim, and use the pinch wheel assembly to press The toe area of the tire that is about to be pressed into the rim to prevent it from touching the rim.

The above tire removal operation process includes the following steps: (1) Control the sliding frame of the tire changer to descend so that the hook of the skid plate is inserted between the tire toe and the rim; (2) Adjust the tire to a horizontal state and make the skid plate rotate to Vertical state; (3) Control the tire changer carriage to lift a certain height, and use the pry plate to pry out the part of the upper toe of the tire that is hooked by the hook part from the rim; (4) Then the tire chuck drives the tire to rotate (5) Continue to lift the tire changer carriage upwards, so that the crowbar pushes up against the underside of the tire, and the toe of the underside of the tire is pushed away from the rim by the crowbar. (6) The tire chuck drives the tire to rotate, so that the entire circle of toes on the underside of the tire is detached from the rim by a crowbar.

The above tire loading process includes the following steps: (1) Control the sliding frame of the tire changer to descend so that the crowbar of the crowbar assembly presses the upper side of the tire and presses the tire toe portion corresponding to the position pressed by the crowbar into the rim; At the same time, the lower end face of the pinch wheel of the pinch wheel assembly is pressed on the rim edge and the outer periphery of the pinch wheel bears against the toe of the tire to be pressed into the rim, so as to prevent the toe of the tire from directly contacting the edge of the rim; (2) Then the tire The chuck drives the tire to rotate, so that the entire toe of the tire is pressed into the rim by the crowbar.

Unless otherwise stated in any of the technical solutions disclosed in the above-mentioned utility model, if it discloses a numerical range, then the disclosed numerical range is the preferred numerical range, and any person skilled in the art should understand: the preferred numerical range is only It is a numerical value with obvious or representative technical effect among many practicable numerical values. Since the numerical values are too numerous to be exhaustive, only some numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values shall not constitute a limitation on the protection scope of the present invention.

If the present invention discloses or involves parts or structural parts that are fixedly connected to each other, then, unless otherwise stated, fixed connection can be understood as: detachable fixed connection (for example, using bolts or screws), can also be understood as : Non-removable fixed connection (such as riveting, welding), of course, the mutual fixed connection can also be replaced by a one-piece structure (for example, using a casting process to integrally form) (except that it is obviously impossible to use an integral forming process).

In addition, the terms used to represent the positional relationship or shape used in any of the technical solutions disclosed in the present invention, unless otherwise stated, have their meanings including states or shapes that are similar to, similar to, or close to.

Any component provided by the present invention may be assembled from a plurality of individual components, or may be a single component manufactured by an integral molding process.

Finally it should be noted that: the above embodiment is only used to illustrate the technical scheme of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should understand: still The specific embodiments of the present invention can be modified or some technical features can be equivalently replaced; without departing from the spirit of the technical solutions of the present invention, all of them should be included in the scope of the technical solutions claimed in the present invention.

Claims (9)

1. The utility model provides a tear child machine balladeur train overall structure open, includes the balladeur train of tearing the child machine, sled child mechanism and be located sled child mechanism below crowbar subassembly, its characterized in that: the tire prying mechanism is mounted on the sliding frame and can perform telescopic motion relative to the sliding frame, and the crowbar assembly is horizontally mounted on the side part of the sliding frame and can slide and stretch back and forth relative to the sliding frame; the sliding frame is provided with a driving device for driving the tire prying mechanism and the crowbar assembly to perform telescopic motion relative to the sliding frame; the sliding frame is also provided with a press wheel assembly which is used for preventing the toe part of the tire to be pressed into the rim from touching the rim edge when the tire is mounted.

2. The tire removing machine carriage overall structure of claim 1, wherein: the tire prying mechanism and the crowbar assembly are driven by the same driving device to perform telescopic motion, and the side part of the sliding frame is provided with a linkage mechanism for realizing synchronous telescopic motion of the tire prying mechanism and the crowbar assembly; the balladeur train lateral part is equipped with the activity bedplate that is driven by drive arrangement and removes, sled child mechanism install in on the activity bedplate, drive arrangement is including the guide shaft that the slope set up and the driving cylinder parallel with the guide shaft, be equipped with on the activity bedplate with guide shaft sliding fit's guide sleeve portion, the drive end of driving cylinder is connected on the guide sleeve portion of activity bedplate so that drive sled child mechanism concertina movement when the driving cylinder is flexible.

3. The tyre changer carriage overall structure of claim 2, characterized in that: the linkage mechanism comprises a connecting rod, a swing arm and an actuating rod, the upper end of the connecting rod is hinged to the driving end of the driving cylinder, the lower end of the connecting rod is hinged to the upper portion of the swing arm, the lower portion of the swing arm is hinged to the side portion of the sliding frame, so that the driving cylinder can push the swing arm to swing back and forth through the connecting rod when stretching, and two ends of the actuating rod are hinged to the middle of the swing arm and the.

4. Tyre changer carriage monoblock construction according to claim 1, 2 or 3, characterized in that: the crowbar component comprises a sleeve which is arranged on the side part of the sliding frame and can slide back and forth relative to the sliding frame and a crowbar which is sleeved in the sleeve and is matched with the sleeve in a rotating way; the pinch roller assembly comprises a swing frame and a pinch roller, wherein the rear end of the swing frame is hinged on the sliding frame and can swing left and right relative to the sliding frame, the pinch roller is arranged on the swing frame, the lower end surface of the pinch roller is pressed on the edge of the rim, and the outer periphery of the pinch roller is pressed against the toe opening of the tire to be pressed into the rim.

5. The tire remover carriage overall structure of claim 4, wherein: the swing frame is sleeved with a sliding block, a vertical through hole is formed in the sliding block, a connecting shaft capable of sliding relative to the sliding block is coaxially arranged in the vertical through hole in a penetrating mode, the bottom end of the connecting shaft extends out of the bottom of the vertical through hole and is coaxially connected with the pressing wheel through a bearing, the top end of the connecting shaft extends out of the top of the vertical through hole and is convexly provided with a limiting flange towards the periphery, and a spring is sleeved on the connecting shaft between the pressing wheel; the linkage rod is connected between the sliding block and the sleeve of the crowbar assembly, and two ends of the linkage rod are respectively hinged to the sleeve and the sliding block.

6. Tyre changer carriage monoblock construction according to claim 1, 2 or 3, characterized in that: the tire prying mechanism comprises a support, a prying plate is mounted at the front end of the support, the middle part of the prying plate is hinged to the support, two hooks of different sizes are arranged at two ends of the prying plate and used for prying the tire, and the directions of the hooks at the two ends of the prying plate are opposite; and the support is provided with a limiting mechanism capable of keeping the pry plate in an inclined state or a vertical state.

7. The tire remover carriage overall structure of claim 6, wherein: the limiting mechanism comprises a limiting cross rod which can swing up and down and can prop against the upper part of the prying plate when swinging down so as to limit the prying plate to rotate downwards and keep the prying plate in an inclined state; and a limiting ejector rod which can swing up and down and is used for enabling the front end to prop against the upper part of the prying plate to limit the prying plate to rotate backwards when the prying plate is in a vertical state is arranged above the limiting cross rod.

8. The tire remover carriage overall structure of claim 7, wherein: the middle part of the prying plate is hinged on the support through a hinge shaft which is rotationally matched with the support, the prying plate and the hinge shaft synchronously rotate, and one end of the hinge shaft is provided with a spring damping mechanism which is used for preventing the upper part of the prying plate from rotating towards the direction far away from the limiting transverse rod and the limiting ejector rod when the prying plate is in an inclined and vertical state; spring damping mechanism includes the spring that sets up along articulated shaft diameter direction, and the spring middle part is connected in articulated shaft tip, the support lateral part is provided with the bayonet lock that can withstand spring one end wherein when the pinch plate is in slope and vertical state, install the gyro wheel on the bayonet lock.

9. The tire remover carriage overall structure of claim 6, wherein: wherein one end length of the pry plate is less than the other end length, the hook portion curvature of the shorter end of the pry plate is greater than the hook portion curvature of the longer end of the pry plate, the longer end of the pry plate is 150-250 mm, and the shorter end of the pry plate is 100-200 mm.

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