CN112627278A

CN112627278A - Excavator track assists erection equipment

Info

Publication number: CN112627278A
Application number: CN202110099471.2A
Authority: CN
Inventors: 晏铭
Original assignee: Shenzhen Hewanrui Trade Co ltd
Current assignee: Shenzhen Hewanrui Trade Co ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-04-09

Abstract

The invention relates to the field related to excavators, in particular to an excavator track assisting installation device which comprises a machine body and a lifting groove, wherein the lifting groove is arranged on the right end wall of the machine body and extends towards the inside of the machine body, a lifting device extending to the right side and the bottom of the machine body is arranged in the lifting groove, the lifting device can drive the machine body to move up and down so as to adjust the height of the excavator during installation, the height of the excavator can be aligned with the height of the excavator, a first transmission cavity is arranged in the machine body and is positioned on the left side of the lifting groove, the excavator track assisting installation device can assist a driver to install a track on the excavator again when the track falls off during excavator operation, for an excavator driver with low proficiency, the excavator driver is prevented from damaging the excavator during installation of the track, and the equipment is used for installing the track, the time can be greatly saved, and the construction period is shortened.

Description

Excavator track assists erection equipment

Technical Field

The invention relates to the field related to excavators, in particular to equipment for assisting installation of an excavator track.

Background

The excavator is one of important engineering equipment in engineering construction, is common in various construction sites, and a driver operating the excavator needs to be skilled in the process of driving the excavator, so that when the excavator is operated, the crawler of the excavator often falls off due to excessive soil, the excavator cannot continue to operate, but the operation of the excavator for installing the crawler requires high operation requirements, so that the excavator crawler is required to be designed to assist installation equipment, and the existing problems are solved.

Disclosure of Invention

The invention aims to provide equipment for assisting in installing an excavator crawler, which can overcome the defects in the prior art, so that the practicability of the equipment is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to excavator track-assisted mounting equipment, which comprises an excavator body and a lifting groove arranged on the right end wall of the excavator body and extending towards the inside of the excavator body, wherein a lifting device extending to the right side and the bottom of the excavator body is arranged in the lifting groove, the lifting device can drive the excavator body to move up and down so as to adjust the height during mounting, so that the equipment height can be aligned with the height of an excavator, a first transmission cavity positioned on the left side of the lifting groove is arranged in the excavator body, the right end wall of the first transmission cavity is rotatably provided with two vertically symmetrical threaded sleeves, the threaded sleeves extend out of the left side of the excavator body leftwards, the outer surfaces of the threaded sleeves are fixedly provided with first gears positioned in the first transmission cavity, the inner parts of the threaded sleeves are in threaded fit with first threaded rods extending rightwards, the left end walls of the upper and the lower first threaded rods are jointly, when the upper and lower two threaded sleeves synchronously rotate, the workbench can be driven to move left and right under the action of the first threaded rod, a mounting device is arranged on the workbench and comprises the workbench and a second transmission cavity arranged in the workbench, telescopic arms extending to the outer parts of the front and rear sides of the machine body are symmetrically arranged on the front and rear end walls of the second transmission cavity in a vertically sliding manner, a bracket positioned at the rear side of the machine body is fixedly arranged on the rear end wall of the telescopic arm at the upper side, an open chute is forwards arranged in the telescopic arm at the upper side, the bracket positioned at the front side of the machine body is fixedly arranged on the front end wall of the telescopic arm at the lower side, the open chute is backwards arranged in the telescopic arm at the lower side, and a sliding rod in sliding fit with the upper chute is fixedly arranged on the rear end wall of the bracket at the front side, the sliding rod matched with the sliding groove on the lower side is fixedly arranged on the front side end wall of the support on the rear side, racks are fixedly arranged on the upper telescopic arm and the lower telescopic arm close to the inner side end wall, a gear shaft located in the second transmission cavity is rotatably arranged on the left end wall of the second transmission cavity, a second gear located in the second transmission cavity is fixedly arranged on the outer surface of the gear shaft, the second gear is simultaneously meshed with the upper rack and the lower rack, and when the gear shaft drives the second gear to rotate, the second gear is meshed with the racks to drive the telescopic arms to slide back and forth; the machine body is internally provided with a third transmission cavity positioned at the rear side of the first transmission cavity, the third transmission cavity and the first transmission cavity are internally provided with a transmission device, and the transmission device is used for transmitting power between the lifting device and the mounting device.

Furthermore, the mounting device further comprises a support and a first wheel shaft which is rotatably arranged inside the support and is vertically symmetrical, a first supporting wheel is fixedly arranged on the outer surface of the first wheel shaft, a second wheel shaft is rotatably arranged inside the support, a second supporting wheel is fixedly arranged on the outer surface of the second wheel shaft, the second wheel shaft and the first supporting wheel are matched to jointly support the crawler, and the crawler is matched with the telescopic arm to slide back and forth, so that the crawler is supported, the power wheel of the excavator can be sleeved by the crawler, the workbench is matched with the first threaded rod to drive the workbench to move towards the position close to the excavator, and the chuck can clamp the wheel teeth, so that the crawler is mounted at the correct position.

Further, the lifting device comprises the lifting groove and a fourth transmission cavity which is arranged in the machine body and is positioned at the upper side of the lifting groove, the bottom wall of the lifting groove is rotatably provided with a second threaded rod which extends into the fourth transmission cavity, the top end of the second threaded rod is fixedly provided with a first bevel gear which is positioned in the fourth transmission cavity, the left end wall of the lifting groove is provided with two threaded blocks which extend to the outer part of the right side of the lifting groove in a vertical sliding manner, the threaded blocks are sleeved on the second threaded rod and are in threaded fit with the outer surface of the second threaded rod, the second threaded rod drives the threaded blocks to move up and down when rotating, the right end walls of the upper threaded block and the lower threaded block are jointly and fixedly provided with a fixed support which is positioned at the right side of the machine body, the bottom wall of the fixed support is fixedly provided with a base, the lifting device further comprises a first rotating shaft which is rotatably arranged on the front end wall and the rear end wall of the fourth transmission cavity, a second bevel gear which is positioned in the fourth transmission cavity and meshed with the first bevel gear is fixedly arranged on the outer surface of the first rotating shaft, and a first belt wheel which is positioned on the rear side of the second bevel gear is fixedly arranged on the outer surface of the first rotating shaft.

Further, the transmission device comprises a third transmission cavity and a motor arranged in the machine body and positioned between the third transmission cavity and the first transmission cavity, the output shaft of the motor extends to the rear end wall of the third transmission cavity, a first spline shaft positioned in the third transmission cavity is arranged on the outer surface of the output shaft in a spline fit mode, a third gear positioned in the third transmission cavity is fixedly arranged on the outer surface of the first spline shaft, an air cylinder positioned on the rear side of the third transmission cavity is arranged in the machine body, a piston rod extending into the third transmission cavity and contacting with the first spline shaft is arranged in the air cylinder in a front-back sliding mode, the piston rod can drive the first spline shaft to move back and forth when moving back and forth, a second rotating shaft positioned on the right side of the output shaft is arranged on the front end wall and the rear end wall of the third transmission cavity in a rotating mode, the fixed second band pulley that is provided with of second pivot surface, the second band pulley pass through the belt with first band pulley cooperation is connected, the fixed second pivot surface be provided with be located the second band pulley rear side can with third gear engagement's fourth gear, third transmission chamber rear end wall rotates and is provided with and extends to first transmission intracavity just is located the left third pivot of output shaft, the fixed third pivot surface be provided with be located the third transmission intracavity can with third gear engagement's fifth gear.

Furthermore, the transmission device also comprises a spline shaft which is arranged in the first transmission cavity and is in spline fit with the outer surface of the third rotating shaft, a third bevel gear which is arranged in the first transmission cavity is fixedly arranged at the rear end of the spline shaft, a fourth bevel gear which is arranged at the front side of the third bevel gear is fixedly arranged on the outer surface of the spline shaft, a magnet is fixedly arranged at the front end of the spline shaft and can be attracted or repelled with an electromagnet which is fixedly arranged at the front end wall of the first transmission cavity, a fourth rotating shaft is rotatably arranged at the right end wall of the first transmission cavity, a sixth gear which is arranged in the first transmission cavity is fixedly arranged on the outer surface of the fourth rotating shaft, the sixth gear is meshed with the first gear, a fifth bevel gear which is arranged at the left side of the sixth gear is fixedly arranged at the left end of the fourth rotating shaft, and the fifth bevel gear can be meshed, the left end wall of the first transmission cavity is rotatably provided with a fifth rotating shaft which extends to the outside of the first transmission cavity leftwards, the right end of the fifth rotating shaft is fixedly provided with a sixth bevel gear which is positioned in the first transmission cavity, the sixth bevel gear can be meshed with the third bevel gear, the right end wall of the second transmission cavity is rotatably provided with a second spline shaft which extends to the outside of the workbench, the right end of the second spline shaft is in spline fit with the left end of the fifth rotating shaft, the left end of the second spline shaft is in fit connection with the gear shaft through an over-limit protector, the second spline shaft drives the gear shaft to synchronously rotate, and when the gear shaft is subjected to large resistance and cannot continuously rotate, the second spline shaft cannot continuously drive the gear shaft to rotate under the action of the over-limit protector.

The invention has the beneficial effects that: the excavator track auxiliary mounting equipment provided by the invention can assist a driver to mount the track on the excavator again when the track falls off in the operation of the excavator, avoids the damage to the excavator in the process of mounting the track for the excavator driver with low proficiency, and can greatly save time and shorten the construction period by using the equipment to mount the track.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of an excavator track-assisted mounting apparatus of the present invention.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

FIG. 3 is a schematic diagram of B-B in FIG. 1.

Fig. 4 is a schematic view of the structure of C-C in fig. 1.

Fig. 5 is a schematic diagram of the structure D-D in fig. 2.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Referring to fig. 1-5, the excavator track assisting installation device includes a body 10 and a lifting groove 44 formed in a right end wall of the body 10 and extending into the body 10, a lifting device 71 extending to a right side and a bottom of the body 10 is disposed inside the lifting groove 44, the lifting device 71 can drive the body 10 to move up and down, so as to adjust a height during installation, and enable the height of the device to be aligned with a height of an excavator, a first transmission cavity 28 located on a left side of the lifting groove 44 is disposed inside the body 10, two vertically symmetrical threaded sleeves 31 are rotatably disposed on a right end wall of the first transmission cavity 28, the threaded sleeves 31 extend out of a left side of the body 10, a first gear 32 located in the first transmission cavity 28 is fixedly disposed on an outer surface of the threaded sleeves 31, a first threaded rod 30 extending to a right side is disposed inside the threaded sleeve 31 in a threaded fit manner, and the upper and lower two first threaded rods are disposed on the The left end wall of the threaded rod 30 is jointly and fixedly provided with a workbench 17 positioned on the left side of the machine body 10, when the upper and lower threaded sleeves 31 synchronously rotate, the workbench 17 can be driven to move left and right under the action of the first threaded rod 30, the workbench 17 is provided with a mounting device 72 in a carrying manner, the mounting device 72 comprises the workbench 17 and a second transmission cavity 18 arranged in the workbench 17, the front and rear end walls of the second transmission cavity 18 are provided with telescopic arms 19 extending to the outer parts of the front and rear sides of the machine body 10 in a vertically symmetrical sliding manner, the rear end wall of the upper telescopic arm 19 is fixedly provided with a bracket 16 positioned on the rear side of the machine body 10, the inner part of the upper telescopic arm 19 is forwardly provided with an open chute 23, the front end wall of the lower telescopic arm 19 is fixedly provided with the bracket 16 positioned on the front side of the machine body 10, and the inner part of the lower telescopic arm 19 is rearwardly provided with the open, a sliding rod 24 in sliding fit with the sliding groove 23 on the upper side is fixedly arranged on the rear end wall of the bracket 16 on the front side, the sliding rod 24 in sliding fit with the sliding groove 23 on the lower side is fixedly arranged on the front end wall of the bracket 16 on the rear side, racks 20 are fixedly arranged on the inner side end walls of the upper telescopic arm 19 and the lower telescopic arm 19 on the rear side, a gear shaft 22 in the second transmission cavity 18 is rotatably arranged on the left end wall of the second transmission cavity 18, a second gear 21 in the second transmission cavity 18 is fixedly arranged on the outer surface of the gear shaft 22, the second gear 21 is simultaneously meshed with the upper rack 20 and the lower rack 20, and when the gear shaft 22 drives the second gear 21 to rotate, the second gear 21 is meshed with the racks 20 to drive the telescopic arms 19 to slide back and forth; a third transmission cavity 54 located at the rear side of the first transmission cavity 28 is arranged inside the machine body 10, a transmission device 73 is arranged inside the third transmission cavity 54 and the first transmission cavity 28, and the transmission device 73 transmits power to the lifting device 71 and the mounting device 72.

Advantageously, the mounting device 72 further comprises the support 16 and a first wheel shaft 15 rotatably disposed inside the support 16 and symmetrical up and down, the first wheel shaft 15 is provided with a first supporting wheel 14 fixedly on the outer surface, the support 16 is provided with a second wheel shaft 48 rotatably, the second wheel shaft 48 is provided with a second supporting wheel 49 fixedly on the outer surface, the second wheel shaft 48 and the first supporting wheel 14 cooperate to support the track 12, and cooperate with the telescopic arm 19 to slide back and forth, so as to support the track 12, so as to enable the track 12 to be sleeved on the power wheel of the excavator, and cooperate with the first threaded rod 30 to drive the worktable 17 to move close to the excavator, so as to enable the chuck 13 to clamp the gear teeth, so as to mount the track 12 at the right position.

Advantageously, the lifting device 71 includes the lifting groove 44 and a fourth transmission cavity 39 disposed inside the machine body 10 and located on the upper side of the lifting groove 44, the bottom wall of the lifting groove 44 is rotatably provided with a second threaded rod 43 extending into the fourth transmission cavity 39, the top end of the second threaded rod 43 is fixedly provided with a first bevel gear 42 located in the fourth transmission cavity 39, the left end wall of the lifting groove 44 is slidably provided with two threaded blocks 45 extending to the outside of the right side of the lifting groove 44 up and down, the threaded blocks 45 are sleeved on the second threaded rod 43 and are in threaded fit with the outer surface of the second threaded rod 43, the threaded blocks 45 are driven to move up and down when the second threaded rod 43 is rotated, the right end walls of the two upper and lower threaded blocks 45 are jointly and fixedly provided with a fixed support 46 located on the right side of the machine body 10, the bottom wall of the fixed support 46 is fixedly provided with a base 47 located on the lower, the base 47 is used for supporting the machine body 10, the lifting device 71 further includes a first rotating shaft 40 rotatably disposed on the front and rear end walls of the fourth transmission cavity 39, a second bevel gear 41 engaged with the first bevel gear 42 and disposed in the fourth transmission cavity 39 is fixedly disposed on the outer surface of the first rotating shaft 40, and a first pulley 64 disposed on the rear side of the second bevel gear 41 is fixedly disposed on the outer surface of the first rotating shaft 40.

Advantageously, the transmission device 73 includes the third transmission cavity 54 and the motor 11 disposed inside the machine body 10 and between the third transmission cavity 54 and the first transmission cavity 28, an output shaft 57 of the motor 11 extends rearward to a rear end wall of the third transmission cavity 54, an outer surface of the output shaft 57 is provided with a first spline shaft 56 in a spline fit manner in the third transmission cavity 54, an outer surface of the first spline shaft 56 is fixedly provided with a third gear 55 in the third transmission cavity 54, an inside of the machine body 10 is provided with a cylinder 58 at a rear side of the third transmission cavity 54, an inside of the cylinder 58 is slidably provided with a piston rod 59 extending into the third transmission cavity 54 and contacting with the first spline shaft 56, the piston rod 59 moves the first spline shaft 56 forward and backward when moving forward and backward, a front and rear end wall of the third transmission cavity 54 is rotatably provided with a second rotating shaft 60 at a right side of the output shaft 57, a second belt wheel 62 is fixedly arranged on the outer surface of the second rotating shaft 60, the second belt wheel 62 is connected with the first belt wheel 64 in a matched manner through a belt 63, a fourth gear 61 which is positioned on the rear side of the second belt wheel 62 and can be meshed with the third gear 55 is fixedly arranged on the outer surface of the second rotating shaft 60, a third rotating shaft 33 which extends into the first rotating cavity 28 and is positioned on the left side of the output shaft 57 is rotatably arranged on the rear end wall of the third rotating cavity 54, and a fifth gear 53 which is positioned in the third rotating cavity 54 and can be meshed with the third gear 55 is fixedly arranged on the outer surface of the third rotating shaft 33.

Advantageously, the transmission device 73 further comprises a spline shaft 35 disposed on the outer surface of the third rotating shaft 33 in a spline fit manner and located in the first transmission cavity 28, a third bevel gear 34 disposed in the first transmission cavity 28 is fixedly disposed at the rear end of the spline shaft 35, a fourth bevel gear 52 disposed on the front side of the third bevel gear 34 is fixedly disposed on the outer surface of the spline shaft 35, a magnet 51 is fixedly disposed on the front end of the spline shaft 35, the magnet 51 can be attracted or repelled with an electromagnet 50 fixedly disposed on the front end wall of the first transmission cavity 28, a fourth rotating shaft 37 is rotatably disposed on the right end wall of the first transmission cavity 28, a sixth gear 38 disposed in the first transmission cavity 28 is fixedly disposed on the outer surface of the fourth rotating shaft 37, the sixth gear 38 is meshed with the first gear 32, and a fifth bevel gear 36 disposed on the left side of the sixth gear 38 is fixedly disposed on the left side of the fourth rotating shaft 37, the fifth bevel gear 36 can be meshed with the fourth bevel gear 52, the left end wall of the first transmission cavity 28 is rotatably provided with a fifth rotating shaft 27 which extends to the left outside the first transmission cavity 28, a sixth bevel gear 29 positioned in the first transmission cavity 28 is fixedly arranged at the right end of the fifth rotating shaft 27, the sixth bevel gear 29 can be meshed with the third bevel gear 34, the right end wall of the second transmission cavity 18 is rotatably provided with a second spline shaft 26 extending out of the workbench 17, the right end of the second spline shaft 26 is in spline fit with the left end of the fifth rotating shaft 27, the left end of the second spline shaft 26 is in fit connection with the gear shaft 22 through an over-limit protector 25, the second spline shaft 26 drives the gear shaft 22 to synchronously rotate, and when the gear shaft 22 cannot rotate continuously due to a large resistance, the second spline shaft 26 cannot rotate continuously to drive the gear shaft 22 to rotate under the action of the over-limit protector 25.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

Sequence of mechanical actions of the whole device:

in the initial state, the third bevel gear 34 is engaged with the sixth bevel gear 29, the fifth bevel gear 36 is disengaged from the fourth bevel gear 52, the fifth gear 53 is engaged with the third gear 55, and the fourth gear 61 is disengaged from the third gear 55.

When the apparatus of the present invention is in operation, after the track 12 is put over the first supporting wheel 14 and the second supporting wheel 49, the motor 11 is started to rotate the output shaft 57, so as to rotate the first spline shaft 56, so as to rotate the third gear 55, so as to rotate the fifth gear 53, so as to rotate the third rotating shaft 33, so as to rotate the spline shaft 35, so as to rotate the third rotating shaft 33, so as to rotate the sixth bevel gear 29, so as to rotate the fifth rotating shaft 27, so as to rotate the second spline shaft 26, so as to rotate the gear shaft 22, so as to rotate the second gear 21, so as to slide the telescopic arm 19 back and forth, so that the first supporting wheel 14 and the second wheel shaft 48 jointly support the track 12, then controlling the piston rod 59 to move backwards to move the first spline shaft 56 backwards, so that the third gear 55 moves backwards to engage with the fourth gear 61, so that the third gear 55 drives the fourth gear 61 to rotate, so that the second rotating shaft 60 is driven to rotate, so that the second belt pulley 62 is driven to rotate, so that the first belt pulley 64 is driven to rotate, so that the first rotating shaft 40 is driven to rotate, so that the second bevel gear 41 is driven to rotate, so that the first bevel gear 42 is driven to rotate, so that the second threaded rod 43 is driven to rotate, so that the machine body 10 is driven to move upwards by the thread block 45, so that the height of the crawler 12 is the same as that of an excavator, then controlling the electromagnet 50 to repel with the magnet 51, so that the spline shaft 35 moves backwards, so that the fourth bevel gear 52 engages with the fifth bevel gear 36, so that the third bevel gear 34 is not engaged with the fourth transmission cavity 39, and the first spline shaft 56 is controlled to re-engage the third gear 55 with the fifth gear 53, and the spline shaft 35 rotates to drive the fourth bevel gear 52 to rotate, so that the fifth bevel gear 36 is driven to rotate, so that the fourth rotating shaft 37 is driven to rotate, so that the sixth gear 38 is driven to rotate, so that the first gear 32 is driven to rotate, so that the threaded sleeve 31 is driven to rotate, so that the first threaded rod 30 is driven to move left, so that the workbench 17 moves left, so that the crawler 12 can be sleeved on the power wheels of the excavator, and the chuck 13 can be used for clamping the teeth, so that the crawler 12 can be installed at the right position.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an excavator track assists erection equipment, includes the organism and sets up organism right side wall to the inside lift groove that extends of organism, its characterized in that: the inner part of the lifting groove is provided with a lifting device extending to the right side and the bottom of the machine body, the lifting device can drive the machine body to move up and down so as to adjust the height during installation, so that the equipment height can be aligned with the height of an excavator, the inner part of the machine body is provided with a first transmission cavity positioned at the left side of the lifting groove, the right end wall of the first transmission cavity is rotationally provided with two vertically symmetrical threaded sleeves, the threaded sleeves extend out of the outer part of the left side of the machine body leftwards, the outer surface of the threaded sleeves is fixedly provided with a first gear positioned in the first transmission cavity, the inner part of the threaded sleeves is provided with a first threaded rod extending rightwards in a threaded fit manner, the left end walls of the upper threaded rod and the lower threaded rod are fixedly provided with a workbench positioned at the left side of the machine body together, and when the, the workbench is provided with a mounting device, the mounting device comprises the workbench and a second transmission cavity arranged in the workbench, the front end wall and the rear end wall of the second transmission cavity are provided with telescopic arms extending to the outer parts of the front side and the rear side of the machine body in an up-and-down symmetrical sliding manner, the rear end wall of the upper telescopic arm is fixedly provided with a bracket positioned at the rear side of the machine body, the inner part of the upper telescopic arm is provided with an open chute forwards, the front end wall of the lower telescopic arm is fixedly provided with the bracket positioned at the front side of the machine body, the inner part of the lower telescopic arm is provided with an open chute backwards, the rear end wall of the front bracket is fixedly provided with a slide bar in sliding fit with the chute at the upper side, the front end wall of the rear bracket is fixedly provided with the slide bar in fit with the chute at the lower side, and the upper telescopic arm and the, a gear shaft positioned in the second transmission cavity is rotatably arranged on the left end wall of the second transmission cavity, a second gear positioned in the second transmission cavity is fixedly arranged on the outer surface of the gear shaft, the second gear is simultaneously meshed with the upper rack and the lower rack, and when the gear shaft drives the second gear to rotate, the second gear is meshed with the racks to drive the telescopic arm to slide back and forth; the machine body is internally provided with a third transmission cavity positioned at the rear side of the first transmission cavity, the third transmission cavity and the first transmission cavity are internally provided with a transmission device, and the transmission device is used for transmitting power between the lifting device and the mounting device.

2. An excavator track assist mounting apparatus as claimed in claim 1 wherein: the mounting device further comprises a support and a first wheel shaft which is rotatably arranged inside the support and is vertically symmetrical, a first supporting wheel is fixedly arranged on the outer surface of the first wheel shaft, a second wheel shaft is rotatably arranged inside the support, a second supporting wheel is fixedly arranged on the outer surface of the second wheel shaft, the second wheel shaft and the first supporting wheel are matched to jointly support the crawler, and the second wheel shaft and the first supporting wheel are matched with the telescopic arm to slide back and forth so as to support the crawler, so that the crawler can be sleeved on the power wheel of the excavator, and the first threaded rod is matched to drive the workbench to move close to the excavator, so that the chuck can clamp the wheel teeth, and the crawler is mounted at the correct position.

3. An excavator track assist mounting apparatus as claimed in claim 1 wherein: the lifting device comprises the lifting groove and a fourth transmission cavity which is arranged in the machine body and is positioned at the upper side of the lifting groove, the bottom wall of the lifting groove is rotationally provided with a second threaded rod which extends into the fourth transmission cavity, the top end of the second threaded rod is fixedly provided with a first bevel gear which is positioned in the fourth transmission cavity, the left end wall of the lifting groove is vertically and slidably provided with two threaded blocks which extend to the outer part of the right side of the lifting groove, the threaded blocks are sleeved on the second threaded rod and are in threaded fit with the outer surface of the second threaded rod, the second threaded rod drives the threaded blocks to move up and down when rotating, the right end walls of the upper threaded block and the lower threaded block are jointly and fixedly provided with a fixed support which is positioned at the right side of the machine body, the bottom wall of the fixed support is fixedly provided with a base, the lifting device further comprises a first rotating shaft which is rotatably arranged on the front end wall and the rear end wall of the fourth transmission cavity, a second bevel gear which is positioned in the fourth transmission cavity and meshed with the first bevel gear is fixedly arranged on the outer surface of the first rotating shaft, and a first belt wheel which is positioned on the rear side of the second bevel gear is fixedly arranged on the outer surface of the first rotating shaft.

4. An excavator track assist mounting apparatus as claimed in claim 1 wherein: the transmission device comprises a third transmission cavity and a motor which is arranged in the machine body and is positioned between the third transmission cavity and the first transmission cavity, the output shaft of the motor extends to the rear end wall of the third transmission cavity backwards, a first spline shaft which is positioned in the third transmission cavity is arranged on the outer surface of the output shaft in a spline fit mode, a third gear which is positioned in the third transmission cavity is fixedly arranged on the outer surface of the first spline shaft, an air cylinder which is positioned at the rear side of the third transmission cavity is arranged in the machine body, a piston rod which extends into the third transmission cavity and is in contact with the first spline shaft is arranged in the air cylinder in a front-back sliding mode, the piston rod can drive the first spline shaft to move forwards and backwards when moving forwards and backwards, a second rotating shaft which is positioned on the right side of the output shaft is arranged on the front end wall and the rear end wall of the third transmission cavity in, the second belt wheel passes through the belt with first belt wheel cooperation is connected, second pivot external surface is fixed be provided with be located the second belt wheel rear side can with third gear engagement's fourth gear, third transmission chamber rear end wall rotates and is provided with extend to in the first transmission chamber and be located the left third pivot of output shaft, third pivot external surface is fixed be provided with be located the third transmission intracavity can with third gear engagement's fifth gear.

5. An excavator track assist mounting apparatus as claimed in claim 1 wherein: the transmission device also comprises a spline shaft which is arranged in the first transmission cavity and is in spline fit with the outer surface of the third rotating shaft, a third bevel gear which is arranged in the first transmission cavity is fixedly arranged at the rear end of the spline shaft, a fourth bevel gear which is arranged at the front side of the third bevel gear is fixedly arranged on the outer surface of the spline shaft, a magnet is fixedly arranged at the front end of the spline shaft and can be attracted or repelled with an electromagnet fixedly arranged at the front end wall of the first transmission cavity, a fourth rotating shaft is rotatably arranged at the right end wall of the first transmission cavity, a sixth gear which is arranged in the first transmission cavity is fixedly arranged on the outer surface of the fourth rotating shaft, the sixth gear is meshed with the first gear, a fifth bevel gear which is arranged at the left side of the sixth gear is fixedly arranged at the left end of the fourth rotating shaft, and the fifth bevel gear can be meshed, the left end wall of the first transmission cavity is rotatably provided with a fifth rotating shaft which extends to the outside of the first transmission cavity leftwards, the right end of the fifth rotating shaft is fixedly provided with a sixth bevel gear which is positioned in the first transmission cavity, the sixth bevel gear can be meshed with the third bevel gear, the right end wall of the second transmission cavity is rotatably provided with a second spline shaft which extends to the outside of the workbench, the right end of the second spline shaft is in spline fit with the left end of the fifth rotating shaft, the left end of the second spline shaft is in fit connection with the gear shaft through an over-limit protector, the second spline shaft drives the gear shaft to synchronously rotate, and when the gear shaft is subjected to large resistance and cannot continuously rotate, the second spline shaft cannot continuously drive the gear shaft to rotate under the action of the over-limit protector.