CN214295432U

CN214295432U - Multifunctional large-scale heavy-duty vehicle tire dismounting device

Info

Publication number: CN214295432U
Application number: CN202120017754.3U
Authority: CN
Inventors: 陆桂森
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-09-28
Anticipated expiration: 2031-01-06

Abstract

The multifunctional large-scale heavy-duty vehicle tire dismounting device is characterized in that a rear frame is positioned behind the device, a tire lifting mechanism is arranged on the rear frame, and a chuck is arranged at the tail end of a cantilever of the tire lifting mechanism; the side frame is positioned on the side surface of the equipment, and a vacuum tire dismounting mechanism and an inner tire dismounting mechanism and an outer tire dismounting mechanism are arranged on the side frame; the bottom of the device is a tire clamping and translating mechanism. The invention can realize the separation and installation of the tire rim and the tire body of various large-scale load-carrying vehicles, including the disassembly and assembly of the vacuum tire and the inner and outer tire tires, has convenient operation and full mechanical action, improves the disassembly and assembly efficiency of the tires and lightens the working strength of maintenance personnel.

Description

Multifunctional large-scale heavy-duty vehicle tire dismounting device

Technical Field

The utility model relates to an auto repair assembly technical field specifically is a multifunctional tire dismouting equipment.

Background

The tire changer, also called tire changer and tire changer, is used for installing and unloading automobile tires, can change tires for different vehicles such as automobiles, motorcycles, heavy trucks and the like, and is necessary equipment for automobile maintenance factories. The tire dismouting machine can realize the automation mechanized operation basically with tire and rim separation operation in-process at whole dismouting, has alleviateed maintenance workman's working strength greatly. The tire dismouting machine is mainly through on the rotatable chuck, utilizes the child lip of sled sword embedding tire in, peels off the child lip, and then realizes tire and rim separation.

The tires of the heavy-duty vehicles are large in size, the diameter of some tires even reaches more than 1 meter, the replacement of the tires of the heavy-duty vehicles is usually complex and laborious, and the tires of the heavy-duty vehicles are mainly divided into two forms, namely vacuum tires and tires comprising inner tires and outer tires. The tire in the form of a vacuum tire is a single layer, namely the vacuum tire and a rim are assembled and disassembled; the tire that contains interior child still often sets up the catch except that the installation need be dismantled to the installation between especially tire rim and the child lip, and the catch is the taper ring for further fixed with cover tire and rim, demolish the catch in the tradition and do not have professional equipment, mostly adopt artifical dismouting, waste time and energy, and efficiency is extremely low, leads to the fact the injury to the tire.

Prior art documents on a tire mounting and demounting apparatus are searched as follows:

1. a large tire mounting and dismounting tool; application No.: CN 201220303133.2; the applicant: qingdao harbor (group) Ltd; and (3) abstract: the utility model provides a large-scale tire assembly and disassembly tools, it includes the base, connects support frame and the tire expander on the base, the support frame upper end is connected with pulley gear, the tire expander includes upper portion hook, lower part hook and has the suspension support of rope, the pulley gear lower extreme is connected with the rope, upper portion hook is connected on suspension support, lower part hook fixed connection is on the base. Use when tire assembly and disassembly tools carries out the dismouting, the circle mouth grow that upper portion hook and lower part hook combined action can make the tire can convenient and fast ground dismantle the inner tube of a tyre and line tire, has improved dismouting work efficiency, has reduced labourer's intensity, has reduced personnel's use, plays very important effect when mechanical equipment salvagees the trouble, can make equipment go in putting into production as early as possible.

2. A cart tire changer; application No.: CN 99234498.0; the applicant: the Wangxiang and the abstract: a tire dismounting technology, in particular to a large-scale tire dismounting machine. The technical key is that a claw arm fixedly arranged on a base is in bending-detaching telescopic flexible connection through a straight oil cylinder. The power outer shaft arranged on the upper part of the clamping jaw arm is connected with the inner shaft in a hydraulic piston mode. The sliding plate is fixedly connected with a tyre disassembling frame, a tyre disassembling plate, a tyre disassembling hook and a steering gear and is connected with the base in a hydraulic sliding mode. The utility model discloses the dismouting tire saves labour, saves time, laborsaving, work efficiency is high, be difficult for hindering child mouth and rim, and its design benefit is reasonable, and simple structure is practical, is particularly useful for large tire's dismouting.

3. Large tire changing machines; application No.: CN 201711380214.6; the applicant: taian space special vehicle company, abstract: the utility model provides a large-scale tire dismouting machine, includes hydraulic pressure station, base, rim location mould and hydraulic motor the mid-mounting of base has rim location mould, and this rim location mould passes through the hydraulic motor drive and rotates on the base, hydraulic motor and the hydraulic pressure station intercommunication of base lateral part still include crossbeam, left side stand arm, right side stand arm and dismouting mechanism, crossbeam and base parallel arrangement and form the interval. The invention has the advantages that: the tire can rotate around the axis of the tire, the tire dismounting mechanism can move along the axis of the tire, and the actions of hooking, pulling, extruding and the like are completed, so that the separation and mounting of the tire and the rim are completed. On the premise of meeting the requirement of vacuum tire dismounting, the problem that the tire is difficult to detach due to adhesion of a large-size belt inner tire cushion is solved, and the tire is quickly dismounted.

4. A large horizontal tire changer capable of preventing the damage of an inner tube; application No.: CN 202010815613.6; the applicant: the mechanical equipment limited of the Liaotongwei Dewei GmbH: a large horizontal tyre dismounting machine capable of preventing inner tyre from being damaged comprises a base platform, a sliding platform arranged at one end of the base platform, a chuck device, a tyre dismounting mechanism, a hydraulic driving device and an operating platform, wherein the tyre dismounting mechanism comprises a first sliding trolley moving on the sliding platform, a sliding seat fixed with the first sliding trolley and provided with a cavity in the middle, a wheel carrier sliding sleeve fixed in the cavity in the middle of the sliding seat and an integrated tyre dismounting linkage mechanism, the integrated tyre dismounting linkage mechanism comprises a pressing wheel shaft arranged in the wheel carrier sliding sleeve and provided with a pressing wheel at the end part capable of sliding in the pressing wheel shaft, a dismounting hook limiting sleeve fixed on the pressing wheel shaft and a dismounting hook shaft arranged in the dismounting hook limiting sleeve and provided with a dismounting hook at the end part capable of sliding in the dismounting hook limiting sleeve, the disassembly and assembly hook limiting sleeve is provided with a limiting post which can be inserted into the disassembly and assembly hook limiting sleeve, and the disassembly and assembly hook shaft is provided with a groove for accommodating the limiting post. The tire has the advantages of no damage to the inner tube, large size range of the detachable tire and capability of being used for the tire with the inner tube and the tire without the inner tube.

It is apparent that no prior art has appeared concerning a mounting and dismounting device incorporating a variety of large load vehicle tire types.

Disclosure of Invention

The utility model discloses multi-functional tire dismouting equipment can realize the separation and the installation of the tire rim of the large-scale load vehicle of multiple form and matrix, including the dismouting of vacuum child and interior child tire, the simple operation, full mechanical action has improved tire dismouting efficiency, alleviates maintenance personal working strength.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the multifunctional tire dismounting device comprises a rear frame, a tire lifting mechanism and a chuck, wherein the rear frame is positioned behind the device, the tire lifting mechanism is arranged on the rear frame, and the chuck is arranged at the tail end of a cantilever of the tire lifting mechanism; the side frame is positioned on the side surface of the equipment, and a vacuum tire dismounting mechanism and an inner tire dismounting mechanism and an outer tire dismounting mechanism are arranged on the side frame; the bottom of the device is a tire clamping and translating mechanism.

The tire lifting mechanism includes: the middle of the two vertical lifting tracks is provided with a vertical lifting oil cylinder, a piston rod of the lifting oil cylinder is connected with a sliding block, the sliding block moves up and down on the lifting tracks, the sliding block is connected with a horizontal lifting beam, a horizontal rotating shaft is fixed at the tail end of a cantilever of the lifting beam, the horizontal rotating shaft is connected with a chuck, and a speed reduction motor is installed to drive the chuck to move obliquely. The lifting mechanism can realize the up-and-down position adjustment of the tire, and has good reliability.

The chuck is of a double-layer structure, the center of the chuck is a main shaft, and the chuck is connected with a speed reduction motor to drive the chuck to rotate; the main shaft is connected with the chuck main body, a vacuum tire cylinder is arranged on the upper layer of the main body and is hinged with the rotating plate to drive the rotating plate to rotate, two arms of the rotating plate are hinged with chutes on the locking plate, and the locking plate can move back and forth along the sliding rail; the lower layer of the main body is provided with a common tire cylinder, the end part of a piston rod of the common tire cylinder is provided with a top block, the bottom of the main body is provided with a briquetting cylinder, and the top of a piston rod of the briquetting cylinder drives a briquetting to move back and forth; a rotary air distribution valve is arranged on the main shaft, a first air distribution pipe of the rotary air distribution valve is connected with the vacuum tire cylinder, a second air distribution pipe of the rotary air distribution valve is connected with the common tire cylinder, and a third air distribution pipe of the rotary air distribution valve is connected with the pressing block cylinder.

The chuck can realize two actions, one is that the main shaft rotates to the tire that drives above clamping rotates, on the other hand, can realize that the tire carries out 0 degree to 90 degrees slopes, in order to make things convenient for the clamping chucking adjustment of tire. The chuck with the double-layer structure can adapt to clamping of vacuum tires and common tires (inner tires and outer tires) and has strong adaptability. The vacuum tire is reversely mounted, the column rod penetrates through the bolt hole of the rim to prevent the tire from moving and rotating, and the inner ring of the rim is tightly propped after the locking plate extends out, so that the vacuum tire is fixed. The common tire (inner tire and outer tire) is positively mounted, and the ejector block is matched with the pressing block to clamp the edge of the inner ring of the rim, so that the common tire (inner tire and outer tire) is clamped.

The tire dismounting and mounting mechanism for the vacuum tire comprises a tire dismounting arm hinged to the side frame, the tire dismounting arm is driven by a tire dismounting arm oil cylinder hinged to the side frame, the working end of the tire dismounting arm is hinged to a tire prying cutter, and the tire prying cutter is driven by a tire prying cylinder hinged to the tire dismounting arm.

The tire disassembling arm is further hinged with a tire pressing cylinder, and a tire pressing wheel is arranged at the end part of a piston of the tire pressing cylinder.

The steps of removing the vacuum tire are as follows: the tire dismounting arm is controlled to descend in place by controlling the tire dismounting arm oil cylinder, then the tire horizontal height is adjusted by adjusting the lifting oil cylinder, the cutting edge of the tire prying knife is embedded below the tire bead, then the cutting edge of the tire prying knife is lifted by adjusting the tire prying oil cylinder, the tire bead is turned out of the rim, the speed reduction motor is rotated, the tire bead is completely separated from the rim in a circle, and then the vacuum tire is dismounted.

The steps of installing the vacuum tire are as follows: the tire is placed above the rim in a aligned mode, the tire on one side is embedded into the edge of the rim, the tire pressing cylinder is adjusted to press the tire, the tire pressing wheel presses the edge of the tire, then the speed reduction motor is rotated, the circumference of the tire lip is gradually pressed into the rim, and the vacuum tire is installed.

The tire gripping translation mechanism includes: the sliding device comprises a translation oil cylinder fixedly connected with the bottom of a rear frame, a piston end of the translation oil cylinder is hinged with a rear pressure plate, the lower part of the rear pressure plate is hinged on a sliding frame, the left side and the right side of the rear pressure plate are connected with the sliding frame through tension springs, the sliding frame is fixed on a sliding sleeve, the sliding sleeve can slide back and forth on a sliding rail, and the front part of the sliding frame is hinged with a front pressure plate.

The left side and the right side of the sliding frame are respectively provided with a slope and a roller. The slope and the roller wheel can facilitate the tire to roll into the sliding frame, and the angle of the tire can be finely adjusted on the sliding frame, so that the tire can be smoothly sleeved into the chuck.

The tire loading steps are as follows: the tire that will just pull down rolls vertically after the gassing and places on the balladeur train, and the translation hydro-cylinder overcomes extension spring pulling force top with the rear platen and leans forward, and preceding clamp plate is in extreme position and can't continue to incline forward, and preceding clamp plate compresses tightly the tire with the clamp plate, and there is bellied top splenium rear platen surface, extrudees the tire inwards, makes the tire marginal ageing department break away from with the rim adhesion, conveniently tears child operation down on next step, and the tire can 360 degrees rotatory each departments extrude.

After extrusion adhesion is finished, the chuck is adjusted to the position coinciding with the center of the rim, the sliding frame is translated by the translation oil cylinder, the tire center rim is gradually sleeved into the chuck, after the tire center rim is sleeved, the chuck is locked, the tire can be loaded, a speed reduction motor can be driven subsequently, and the tire is rotated to the horizontal position for subsequent operation.

The inner and outer tire dismounting mechanism comprises: the swing arm is vertically hinged to the side frame, a lock ring prying tool is fixed to a cantilever end of the swing arm, a tire prying tool is further hinged to the swing arm, the working position of the tire prying tool is located in front of the lock ring prying tool, and a pressing roller is arranged in the middle of the swing arm.

The inner and outer tire dismounting steps are as follows: swing arm is swung out the work position and is used the round pin location, the level of adjustment tire, make the compression roller push down the matrix, expose the joint portion of catch and rim, tire sled sword for with tire assorted arc, between tool bit embedding rim and the tire, prop apart both, further reduce the degree of difficulty that the catch pried up, then the chuck is rotatory to catch connection end position, the end is connected to the catch of the tool bit embedding joint portion of catch sled sword, increase the tire level a little again, the catch end just separates with the rim, then restart gear motor, pry off the round catch gradually, and then accomplish the separation of catch. And subsequently, the outer tire and the inner tire are sequentially detached and separated.

The inner and outer tire mounting steps are as follows: the swing arm is swung out to the work position and is used the round pin location, and the level of adjustment tire makes the compression roller push down the matrix, exposes the joint portion of catch and rim, and the tire sled sword is packed up and is not used, and the step portion of catch sled sword compresses tightly the catch downwards and connects the end and put in place, then starts gear motor B, impresses the rim with the round catch gradually, and then accomplishes the installation of catch.

The invention has the advantages that:

(1) the utility model discloses can realize large-scale load-carrying vehicle's tire matrix, including the dismouting of the tire dismouting and the catch of vacuum child, interior child form, pack into from the tire and begin, lift off to the tire, all adopt mechanical operation control, changed the difficult problem of large-scale load-carrying vehicle tire maintenance.

(2) The utility model discloses tire system about full-automatic, the manual work only needs to roll the tire into the position, subsequent tire lifting, turned angle, horizontal rotation are accomplished by equipment, labour saving and time saving.

(3) The utility model discloses a press from both sides tight translation mechanism and can make the tire of ageing adhesion also can accomplish smoothly and demolish, need not the tradition manual work and carry out the sledge hammer and strike, the low efficiency operation that the crowbar was peeled off.

(4) The utility model discloses to demolising of vacuum child. And the removal of the locking ring, do not cause any damage to the tire and the rim.

Description of the drawings:

fig. 1 is a schematic view of the appearance structure of the rear frame and the tire lifting mechanism of the present invention;

FIG. 2 is a schematic view of the appearance structure of the rear frame and the tire clamping and translating mechanism of the present invention;

fig. 3 is a schematic side view of the tire lifting mechanism and the tire clamping and translating mechanism of the present invention (the tire enters a pressed state);

fig. 4 is a schematic side view of the tire lifting mechanism and the tire clamping and translating mechanism of the present invention (in a state where the tire is in butt joint with the chuck);

fig. 5 is a schematic side view of the tire lifting mechanism and the tire clamping and translating mechanism of the present invention (the chuck is rotated to a horizontal position);

FIG. 6 is a schematic side view of the tire mounting/dismounting mechanism for a side frame and a vacuum tire of the present invention (with a pry tool inserted into the tire casing);

FIG. 7 is a schematic side view (in a standby state) of the tire mounting/dismounting mechanism for the side frame and the vacuum tire according to the present invention;

FIG. 8 is a schematic side view of the tire mounting/dismounting mechanism for a side frame and a vacuum tire of the present invention (tire body prized up);

FIG. 9 is a schematic side view of the side frame and vacuum tire mounting/dismounting mechanism of the present invention (in the mounted tire state);

FIG. 10 is a side view of the side frame and inner and outer tire mounting and dismounting mechanism of the present invention (with the locking ring removed);

FIG. 11 is a schematic top view of the side frame and inner and outer tire mounting and dismounting mechanism of the present invention (with the locking ring removed);

FIG. 12 is a schematic side view of the side frame and inner and outer tire mounting and dismounting mechanism of the present invention (lock ring mounted state);

FIG. 13 is a schematic structural view showing the appearance of the inner and outer tire mounting and dismounting mechanism;

FIG. 14 is a side view of the chuck;

FIG. 15 is a schematic view of the cross-sectional configuration A-A of FIG. 14;

FIG. 16 is a schematic view of the cross-sectional structure B-B of FIG. 14;

the number designations in the figures are: 1. a rear frame; 11. lifting the track; 12. lifting the oil cylinder; 13. a slider; 14. lifting the beam; 21. a translation oil cylinder; 22. a slide rail; 23. a sliding sleeve; 24. a carriage; 25. a slope; 26. a roller; 27. a front platen; 28. a rear pressing plate; 29. a tension spring; 3. a tire; 31. a locking ring; 41. a main shaft; 42. a vacuum tire cylinder; 421. a rotating plate; 422. a locking plate; 423. a post rod; 43. a common tire cylinder; 44. a briquetting cylinder; 441. briquetting; 45. rotating the gas distribution valve; 46. a horizontal rotating shaft; 5. a side frame; 51. disassembling the tire arm; 52. a tyre arm dismounting oil cylinder; 53. a tire prying cylinder; 54. prying a tire cutter; 55. a tire pressing cylinder; 56. pressing a tire wheel; 61. swinging arms; 62. a compression roller; 63. a lock ring prying tool; 64. a tire prying tool; 71. a tire; 72. a rim; 73. and a locking ring.

Detailed Description

Example 1

The multifunctional tire dismounting device is characterized in that a rear frame 1 is positioned behind the device, a tire lifting mechanism is arranged on the rear frame 1, and a chuck is arranged at the tail end of a cantilever of the tire lifting mechanism; the side frame 5 is positioned on the side surface of the equipment, and a vacuum tire dismounting mechanism and an inner tire dismounting mechanism and an outer tire dismounting mechanism are arranged on the side frame 5; the bottom of the equipment is provided with a tire clamping and translating mechanism;

the tire lifting mechanism includes: the middle of the two vertical lifting tracks 11 is provided with a vertical lifting oil cylinder 12, a piston rod of the lifting oil cylinder 12 is connected with a sliding block 13, the sliding block 13 moves up and down on the lifting tracks, the sliding block 13 is connected with a horizontal lifting beam 14, a horizontal rotating shaft 47 is fixed at the tail end of a cantilever of the lifting beam 14, the horizontal rotating shaft 47 is connected with a chuck, and a speed reduction motor is arranged to drive the chuck to move obliquely;

the chuck is of a double-layer structure, the center of the chuck is a main shaft 41, and the chuck is connected with a speed reduction motor to drive the chuck to rotate; the spindle is connected with the chuck main body, a vacuum tire cylinder 42 and a column rod 423 are arranged on the upper layer of the main body, the vacuum tire cylinder 42 is hinged to drive the rotating plate 421 to rotate, two arms of the rotating plate 421 are hinged to inclined grooves on the locking plate 422, and the locking plate 422 can move back and forth along a sliding rail; the lower layer of the main body is provided with a common tire cylinder 43, the end part of a piston rod of the common tire cylinder 43 is provided with a top block, the bottom of the main body is provided with a briquetting cylinder 44, and the top of the piston rod of the briquetting cylinder 44 drives a briquetting 441 to move forwards and backwards; a rotary air distribution valve 45 is arranged on the main shaft 41, a first air distribution pipe of the rotary air distribution valve 44 is connected with the vacuum tire cylinder 42, a second air distribution pipe of the rotary air distribution valve 44 is connected with the common tire cylinder 43, and a third air distribution pipe of the rotary air distribution valve is connected with the briquetting cylinder 44;

the vacuum tire dismounting and mounting mechanism comprises a tire dismounting arm 51 hinged on the side frame 5, and is driven by a tire dismounting arm cylinder 52 hinged on the side frame 5, the working end of the tire dismounting arm 51 is hinged with a tire prying tool 54, and the tire prying tool 54 is driven by a tire prying cylinder 53 hinged on the tire dismounting arm 51;

the tire dismounting arm 51 is also hinged with a tire pressing cylinder 55, and the end part of a piston of the tire pressing cylinder 55 is provided with a tire pressing wheel 56;

the tire gripping translation mechanism includes: the bottom of the rear frame 1 is fixedly connected with a translation oil cylinder 21, the piston end of the translation oil cylinder 21 is hinged with a rear pressure plate 28, the lower part of the rear pressure plate 28 is hinged on a sliding frame 24, the left side and the right side of the rear pressure plate 28 are connected with the sliding frame (24) through tension springs 29, the sliding frame 24 is fixed on a sliding sleeve 23, the sliding sleeve 23 can slide back and forth on a sliding rail 22, and the front part of the sliding frame 24 is hinged with a front pressure plate 27;

the left side and the right side of the sliding frame 24 are respectively provided with a slope 25 and a roller 26;

the inner and outer tire dismounting mechanism comprises: the swing arm 61 is vertically hinged to the side frame 5, a lock ring prying knife 63 is fixed to a cantilever end of the swing arm 61, a tire prying knife 64 is further hinged to the swing arm 61, the working position of the tire prying knife 64 is located in front of the lock ring prying knife 63, and a pressing roller 62 is arranged in the middle of the swing arm 61.

Claims

1. Multi-functional large-scale load vehicle tire dismouting equipment, its characterized in that: the rear frame (1) is positioned behind the equipment, the rear frame (1) is provided with a tire lifting mechanism, and the tail end of a cantilever of the tire lifting mechanism is provided with a chuck; the side frame (5) is positioned on the side surface of the equipment, and a vacuum tire dismounting mechanism and an inner tire dismounting mechanism and an outer tire dismounting mechanism are arranged on the side frame (5); the bottom of the device is a tire clamping and translating mechanism.

2. The multifunctional large heavy-duty vehicle tire mounting and demounting equipment as claimed in claim 1, wherein: the tire lifting mechanism includes: the middle of each vertical lifting track (11) is provided with a vertical lifting oil cylinder (12), a piston rod of each lifting oil cylinder (12) is connected with a sliding block (13), each sliding block (13) moves up and down on each lifting track, each sliding block (13) is connected with a horizontal lifting cross beam (14), a horizontal rotating shaft (47) is fixed at the tail end of a cantilever of each lifting cross beam (14), each horizontal rotating shaft (47) is connected with a chuck, and a speed reduction motor is installed to drive the chuck to move obliquely.

3. The multifunctional large heavy-duty vehicle tire mounting and demounting equipment as claimed in claim 1, wherein: the chuck is of a double-layer structure, the center of the chuck is a main shaft (41) and the chuck is connected with a speed reduction motor to drive the chuck to rotate; the main shaft is connected with the chuck main body, a vacuum tire cylinder (42) and a column rod (423) are arranged on the upper layer of the main body, the vacuum tire cylinder (42) is hinged to drive the rotating plate (421) to rotate, two arms of the rotating plate (421) are hinged to inclined grooves in the locking plate (422), and the locking plate (422) can move back and forth along the sliding rails; a common tire cylinder (43) is arranged on the lower layer of the main body, a top block is arranged at the end part of a piston rod of the common tire cylinder (43), a briquetting cylinder (44) is arranged at the bottom of the main body, and a briquetting (441) is driven by the top of the piston rod of the briquetting cylinder (44) to move back and forth; a rotary air distribution valve (45) is arranged on the main shaft (41), a first air distribution pipe of the rotary air distribution valve (45) is connected with a vacuum tire cylinder (42), a second air distribution pipe of the rotary air distribution valve (45) is connected with a common tire cylinder (43), and a third air distribution pipe of the rotary air distribution valve is connected with a briquetting cylinder (44).

4. The multifunctional large heavy-duty vehicle tire mounting and demounting equipment as claimed in claim 1, wherein: the tire dismounting and mounting mechanism for the vacuum tire comprises a tire dismounting arm (51) hinged to a side frame (5), the tire dismounting arm (52) hinged to the side frame (5) is used for driving, a tire prying cutter (54) is hinged to the working end of the tire dismounting arm (51), and the tire prying cutter (54) is driven by a tire prying cylinder (53) hinged to the tire dismounting arm (51).

5. The multifunctional large heavy-duty vehicle tire mounting and demounting equipment as claimed in claim 4, wherein: the tire dismounting arm (51) is further hinged with a tire pressing cylinder (55), and the end part of a piston of the tire pressing cylinder (55) is provided with a tire pressing wheel (56).

6. The multifunctional large heavy-duty vehicle tire mounting and demounting equipment as claimed in claim 1, wherein: the tire gripping translation mechanism includes: the bottom of the rear frame (1) is fixedly connected with a translation oil cylinder (21), the piston end of the translation oil cylinder (21) is hinged with a rear pressure plate (28), the lower part of the rear pressure plate (28) is hinged on a sliding frame (24), the left side and the right side of the rear pressure plate (28) are connected with the sliding frame (24) through tension springs (29), the sliding frame (24) is fixed on a sliding sleeve (23), the sliding sleeve (23) can slide back and forth on a sliding rail (22), and the front part of the sliding frame (24) is hinged with a front pressure plate (27).

7. The multifunctional large heavy-duty vehicle tire mounting and demounting equipment as claimed in claim 6, wherein: the left side and the right side of the sliding frame (24) are respectively provided with a slope (25) and a roller (26).

8. The multifunctional large heavy-duty vehicle tire mounting and demounting equipment as claimed in claim 1, wherein: the inner and outer tire dismounting mechanism comprises: the swing arm (61) is vertically hinged to the side frame (5), a lock ring prying knife (63) is fixed to a cantilever end of the swing arm (61), a tire prying knife (64) is further hinged to the swing arm (61), the working position of the tire prying knife (64) is located in front of the lock ring prying knife (63), and a pressing roller (62) is arranged in the middle of the swing arm (61).