CN107697173B - Crawler belt walking device - Google Patents
Crawler belt walking device Download PDFInfo
- Publication number
- CN107697173B CN107697173B CN201711062579.4A CN201711062579A CN107697173B CN 107697173 B CN107697173 B CN 107697173B CN 201711062579 A CN201711062579 A CN 201711062579A CN 107697173 B CN107697173 B CN 107697173B
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- Prior art keywords
- mud removing
- mud
- section
- belt
- tooth
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/088—Endless track units; Parts thereof with means to exclude or remove foreign matter, e.g. sealing means, self-cleaning track links or sprockets, deflector plates or scrapers
- B62D55/0882—Track or sprocket cleaning devices mounted on the frame
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Road Repair (AREA)
- Soil Working Implements (AREA)
Abstract
The utility model provides a crawler running gear, including the support, the band pulley unit and around establishing the walking track on the band pulley unit, the walking track has a plurality of intervals arrangement's track teeth, form the tooth's socket between the adjacent track teeth, the upper portion of walking track has the desilting section, install the desilting device that is arranged in the tooth's socket of desilting section on the support, the desilting device includes the clitellum and drives the clitellum along the drive assembly of annular orbit operation, the clitellum has a section to lie in the flat section of desilting section top, the direction of travel of flat section is 0 ~ 90 contained angles with the direction of travel of desilting section, and the speed of travel of flat section equals the speed of travel of desilting section in the direction of travel of desilting section, install the desilting cutter that more in order to strike off the earth in the tooth's socket through the tooth's socket when following flat section motion on the clitellum. The crawler belt traveling device has the advantages of simple structure, easiness in manufacturing, low cost, good mud removing effect, low energy consumption, stability and reliability in working and the like.
Description
Technical Field
The invention relates to the technical field of crawler traveling equipment, in particular to a crawler traveling device.
Background
In the walking process of the crawler belt walking device, certain adhesion behavior is generated when the walking crawler belt is contacted with soil on the ground, if the soil which is continuously adhered is not removed in time, the soil can be slowly accumulated and is reinforced by repeatedly pressing the contact surface of the crawler belt and the substrate through continuous revolution, so that gaps among high crawler teeth of the crawler belt plate are gradually filled, the actual height of the crawler teeth is reduced, friction force between the walking crawler belt and the ground is reduced, the phenomenon of aging and slipping of the grabbing force occurs, and the passing capacity, the operation quality and the working efficiency of the crawler belt walking device are seriously affected. Therefore, it is necessary to remove soil on the running track of the crawler belt.
The existing mud removing device and mode for removing mud on walking track have various defects, such as:
1. the method has the advantages that the method is simple, practical and reliable, external force such as gas and liquid is utilized for impact desliming, but the defects of high positioning requirement, enough impact pressure requirement, high energy consumption and the like exist in the application process, and for the underwater (in-liquid) working environment, the effective impact force can be greatly weakened due to high water resistance, so that the method has great problems in engineering application, and only theoretical suggestions are proposed at present.
2. The method of utilizing vibration to remove mud not only needs very big impact force, but also needs to produce great amplitude for adhering the caterpillar band, which is contradictory with the tensioning of the operation vehicle and the caterpillar band, and is not practical, and the geological adhesion force of the seabed soft substrate and the like is very strong, and the common vibration can not separate the adhered sea mud at all.
3. The surface engineering is adopted to treat the contact surface or change the shape, for example, a hard brush is adopted to treat, the adhesion degree can be improved to a certain extent, the adhesion force is reduced, but the change is very weak, the influence on the substrate such as sea mud with strong adhesion force is almost eliminated, and the crawler running mechanism of the working vehicle is very simple and optimized, and is not suitable for changing the appearance structure to a great extent, so that the method is also not suitable for use.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects existing in the prior art and providing the crawler traveling device which has the advantages of simple structure, easiness in manufacturing, low cost, good desilting effect, low energy consumption and stable and reliable work.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a crawler running gear, includes the support, installs the band pulley unit on the support and winds the walking track of establishing on the band pulley unit, the walking track has a plurality of intervals arrangement's tooth, forms the tooth's socket of arranging along walking track width direction extension between the adjacent tooth, the upper portion of walking track has the desilting section, install the desilting device that is arranged in the tooth's socket of desilting section on the support, the desilting device includes the clitellum and installs the drive assembly who is used for driving the clitellum to follow annular orbit operation on the support, the clitellum has the straight section of one section in desilting section top, the running direction of straight section is 0 ~ 90 contained angles with the running direction of desilting section, and the running speed of straight section equals the running speed of desilting section at the running direction of desilting section, install the desilting cutter that passes through the tooth's socket in order to strike off the soil in the tooth's socket when following straight section motion on the clitellum.
In the crawler belt traveling device, preferably, the endless belt is provided with a plurality of mud removing cutters for simultaneously scraping mud in the tooth grooves, and the mud removing cutters are uniformly arranged at intervals around the endless belt.
The crawler belt walking device preferably comprises a driving assembly, wherein the driving assembly comprises a mounting seat fixedly mounted on the bracket, more than two driving chain wheels mounted on the mounting seat and a rotary driving mechanism for driving one of the driving chain wheels to rotate, and the endless belt is a chain belt wound on more than two driving wheels.
In the crawler belt walking device, preferably, the rotation driving mechanism comprises a rotation driving piece in the belt wheel unit, and the rotation driving piece is connected with the driving chain wheel through a transmission mechanism; and the mounting seat is provided with a tensioning wheel of the elastic tensioning ring belt.
The track running device is characterized in that the mud removing cutter is hinged on the annular belt and can swing back and forth around the hinge axis in the plane where the running track of the mud removing cutter is located, and the annular belt is also provided with an elastic mechanism for elastically blocking the swing of the mud removing cutter.
According to the crawler traveling device, preferably, the elastic mechanism comprises two abutment seats fixedly connected to the endless belt, the two abutment seats are respectively arranged on two sides of the mud removing cutter, and telescopic springs are arranged between the abutment seats and the mud removing cutter in a pressure equalizing mode.
In the crawler belt traveling device, it is preferable that each mud removing cutter is arranged to extend obliquely in the traveling direction of the straight section from top to bottom when moving to the straight section.
According to the crawler traveling device, preferably, the mud guard is fixedly arranged between the straight section and the mud removing section, and the mud guard is provided with the sliding grooves for the mud removing cutters to pass through corresponding to the mud removing cutters.
According to the crawler traveling device, preferably, one end of the mud guard is provided with a channel for the mud removing cutters to pass through and for scraping mud on the mud removing cutters corresponding to each mud removing cutter.
In the above crawler traveling device, preferably, the pulley unit is provided with a plurality of crawler supporting wheels for supporting the mud removing section and keeping the mud removing section horizontally arranged.
Compared with the prior art, the invention has the advantages that: the track running device is provided with the mud removing device, and as the running direction of the flat section of the mud removing device and the running direction of the mud removing section form an included angle with an acute angle, the dividing speed of the running speed of the flat section in the running direction of the mud removing section is equal to the running speed of the mud removing section, and when the mud removing cutter moves along with the endless belt and passes through the flat section, the mud removing cutter firstly enters the tooth groove from one end of the tooth groove, then moves along the tooth groove and is separated from the tooth groove from the other end of the tooth groove, so that soil in the tooth groove is scraped. Compared with the prior art, the track running device has the advantages that the mechanical structure is adopted to directly forcibly scrape the soil in the tooth grooves, the mud removing effect is good, the energy consumption is low, the work is stable and reliable, the original structure of the track running device is not required to be changed, and the performance of the track running device is not affected. The crawler belt running device also has the advantages of simple structure, easy manufacture and low cost.
Drawings
Fig. 1 is a schematic diagram of a crawler belt running apparatus in front view.
Fig. 2 is a schematic diagram of a partial depression sectional structure of the crawler belt running apparatus.
Fig. 3 is a schematic and schematic illustration of a part of the construction of the mud removing tool mounted on the endless belt.
Legend description:
1. a bracket; 2. a pulley unit; 21. a track support wheel; 3. a walking track; 30. a mud removal section; 31. track teeth; 32. tooth slots; 4. a mud removing device; 41. an endless belt; 411. a straight section; 42. a drive assembly; 421. a mounting base; 422. a drive sprocket; 423. a transmission mechanism; 43. a mud removing cutter; 44. a base; 45. a telescopic spring; 46. a mud guard; 461. a chute; 462. a channel.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples.
As shown in fig. 1 and 2, the crawler traveling device of the present embodiment includes a support 1, a pulley unit 2 mounted on the support 1, and a traveling crawler 3 wound around the pulley unit 2, the traveling crawler 3 has a plurality of crawler teeth 31 arranged at intervals, tooth grooves 32 extending in the width direction of the traveling crawler 3 are formed between adjacent crawler teeth 31, the upper portion of the traveling crawler 3 has a mud removing section 30, a mud removing device 4 for removing mud in the tooth grooves 32 of the mud removing section 30 is mounted on the support 1, the mud removing device 4 includes an endless belt 41 and a driving assembly 42 for driving the endless belt 41 to run along an endless track on the support 1, the endless belt 41 has a flat section 411 located above the mud removing section 30, the running direction of the flat section 411 forms an angle of 0 to 90 ° with the running direction of the mud removing section 30, both ends of the flat section 411 are located at both sides of the mud removing section 30, and the running speed of the flat section 411 in the running direction of the mud removing section 30 is equal to the running speed of the mud removing section 30, and more than one cutter 43 is mounted on the endless belt 41 for scraping mud through the tooth grooves 32 when running along the tooth grooves 32. Since the running direction of the flat section 411 forms an acute angle with the running direction of the mud removing section 30, the dividing speed of the running speed of the flat section 411 in the running direction of the mud removing section 30 is equal to the running speed of the mud removing section 30, and the mud removing cutter 43 firstly enters the tooth groove 32 from one end of the tooth groove 32 and then moves along the tooth groove 32 and is separated from the tooth groove 32 from the other end of the tooth groove 32 when moving along the endless belt 41 through the flat section 411, thereby scraping the mud in the tooth groove 32. Compared with the prior art, the track running device has the advantages that the mechanical structure is adopted to directly and forcedly scrape the soil in the tooth grooves 32, the mud removing effect is good, the energy consumption is low, the work is stable and reliable, the original structure of the track running device is not required to be changed, and the performance of the track running device is not affected. The device has the advantages of simple structure, easy manufacture and low cost.
The running direction of the flat section 411 and the running direction of the mud removing section 30 in this embodiment are preferably 45 ° included angle, which is beneficial to ensuring compactness and working efficiency. When the mud removing cutter 43 passes through the tooth slot 32, the lower end of the mud removing cutter 43 just contacts with the bottom surface of the tooth slot 32 or has a distance smaller than 2mm, and the two sides of the mud removing cutter 43 just contact with the two side walls of the tooth slot 32 or have a distance smaller than 2mm, so that the mud removing effect is better.
In this embodiment, install a plurality of mud removing cutters 43 that are arranged in scraping earth in a plurality of tooth grooves 32 simultaneously on the clitellum 41, a plurality of mud removing cutters 43 are evenly spaced around clitellum 41, and a plurality of mud removing cutters 43 get into a plurality of adjacent tooth grooves 32 of mud removing section 30 in proper order to strike off the operation to earth in a plurality of tooth grooves 32 simultaneously, can improve work efficiency like this greatly, and make the atress of clitellum 41 more even, work is more stable.
In this embodiment, the driving assembly 42 includes a mounting seat 421 fixedly mounted on the support 1, more than two driving sprockets 422 mounted on the mounting seat 421, and a rotation driving mechanism for driving one of the driving sprockets 422 to rotate, and the endless belt 41 is a chain belt wound around more than two driving wheels.
In this embodiment, the rotation driving mechanism includes the rotation driving member of the pulley unit 2, the rotation driving member of the pulley unit 2 is connected with the driving sprocket 422 through the transmission mechanism 423, the transmission mechanism 423 can adopt a combination of a chain transmission mechanism, an intermediate shaft and a bevel gear mechanism, the rotation driving mechanism directly obtains power from the pulley unit 2, the cost can be reduced, the compactness of the structure is improved, and the running speed of the flat section 411 (the running speed of the endless belt 41) can be equal to the running speed of the mud removing section 30 by reasonably designing the transmission ratio of the transmission mechanism 423, so that each mud removing cutter 43 can accurately and reliably pass through the tooth slot 32 running along with the walking track 3. Preferably, the mounting seat 421 is provided with a tensioning wheel of the elastic tensioning ring belt 41 so as to ensure the straightness of the straight section 411, enable the mud removing cutter 43 to stably scrape mud, and ensure the stable reliability of work.
In this embodiment, as shown in fig. 1 and 3, the mud removing cutter 43 is hinged on the endless belt 41 and can swing reciprocally around the hinge axis in the plane where the running track of the mud removing cutter 43 is located, an elastic mechanism for elastically blocking the swinging of the mud removing cutter 43 is further provided on the endless belt 41, when the mud removing cutter 43 enters the tooth slot 32 to scrape mud, the reaction force of the mud makes the mud removing cutter 43 swing backward against the action of the elastic mechanism, and when the tooth slot 32 is removed, the mud removing cutter 43 swings under the action of the elastic mechanism due to the blocking action of the mud, and generates rebound, so that the mud adhered on the mud removing cutter 43 can be sprung off, thereby playing the self-cleaning function of the mud removing cutter 43.
Specifically, the elastic mechanism comprises two abutment seats 44 fixedly connected to the endless belt 41, the two abutment seats 44 are respectively arranged on two sides of the mud removing cutter 43, and an expansion spring 45 is arranged between each abutment seat 44 and the mud removing cutter 43 in a pressure equalizing manner. Preferably, the mud removing cutter 43 is further mounted on the endless belt 41 through an elastic floating mechanism, the elastic floating mechanism enables the mud removing cutter 43 to elastically displace and float in a direction perpendicular to the running direction of the endless belt 41, so that even if fine manufacturing and assembly errors occur, the mud removing cutter 43 can pass through the tooth groove 32 through floating, the situation that the mud removing cutter 43 and the tooth groove 32 are in rigid contact collision to cause that the mud cannot pass through the tooth groove 32 normally or damage is avoided, and obviously, the design can reduce the manufacturing and assembly difficulty of the mud removing device 4 under the condition of ensuring stable and reliable work.
In this embodiment, when each mud removing tool 43 moves to the flat section 411, the mud removing tools are arranged to extend obliquely along the direction from top to bottom to the running direction of the flat section 411, that is, the mud removing tools 43 are arranged obliquely from top to bottom to the running direction of the flat section 411 when the mud removing tools 411 move in the flat section 411 (see fig. 3, the direction from left to right in the drawing is the running direction of the flat section 411), so that the mud removing tools 43 have a certain front inclination angle, the resistance (mainly shear force and torque) of the mud removing tools 43 can be reduced, the vibration of the mud removing tools 43 can be reduced, and the stability of scraping mud can be improved. Preferably, the included angle between the mud removing cutter 43 and the straight section 411 is 45 degrees, so that the mud removing cutter has the best stability, and the telescopic spring 45 can have proper telescopic degree when the mud removing cutter 43 scrapes mud, so that the rebound effect is ensured.
In this embodiment, a mud guard 46 is fixedly installed between the flat section 411 and the mud removing section 30, the mud guard 46 is provided with a chute 461 for passing through the mud removing cutter 43 corresponding to each mud removing cutter 43, and the mud guard 46 can prevent mud from adhering to the flat section 411, so as to ensure stable and reliable operation of the mud removing device 4. Further, one end of the mud guard 46 is provided with a channel 462 corresponding to each mud removing cutter 43 for the mud removing cutters 43 to pass through and scraping off mud on the mud removing cutters 43, and when the mud removing cutters 43 pass through the corresponding channels 462, the channels 462 prevent mud adhered to the mud removing cutters 43 from passing through so as to scrape off the mud removing cutters 43.
In this embodiment, the main structure of the pulley unit 2 adopts the prior art, and includes a driving wheel, a driven wheel and a track bearing wheel mounted on the bracket 1, the walking track 3 is wound on the driving wheel, the driven wheel and the track bearing wheel, the track bearing wheel contacts with a lower section of the walking track 3, and the lower section of the walking track 3 forms a straight grounding section. The drive sprocket 422 of the drive assembly 42 is preferably coupled to the axis of rotation of the drive wheel via a transmission 423. The pulley unit 2 is provided with a plurality of crawler support wheels 21 which support the mud removing section 30 and keep the mud removing section 30 horizontally, the mud removing section 30 is kept horizontally by the crawler support wheels 21, so that a mud removing cutter 43 can smoothly enter the tooth groove 32, and the mud in the tooth groove 32 can be scraped accurately and stably. Preferably, the pulley unit 2 is further provided with a tensioning assembly for tensioning the running track 3 to avoid shaking of the mud removal section 30, enabling the mud removal cutter 43 to smoothly enter the tooth slot 32, the tensioning assembly being set with reference to the prior art.
The above description is merely a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above examples. Modifications and variations which would be obvious to those skilled in the art without departing from the spirit of the invention are also considered to be within the scope of the invention.
Claims (8)
1. The utility model provides a crawler running gear, includes support (1), installs band pulley unit (2) on support (1) and around establishing walking track (3) on band pulley unit (2), walking track (3) have tooth track (31) of a plurality of interval arrangements, form tooth groove (32) of arranging along walking track (3) width direction extension between adjacent tooth track (31), its characterized in that: the upper part of the walking crawler belt (3) is provided with a mud removing section (30), the bracket (1) is provided with a mud removing device (4) for removing mud in a tooth groove (32) of the mud removing section (30), the mud removing device (4) comprises a girdle belt (41) and a driving component (42) which is arranged on the bracket (1) and is used for driving the girdle belt (41) to move along an annular track, the girdle belt (41) is provided with a straight section (411) which is positioned above the mud removing section (30), the running direction of the straight section (411) forms an included angle of 0-90 degrees with the running direction of the mud removing section (30), the partial speed of the running speed of the straight section (411) in the running direction of the mud removing section (30) is equal to the running speed of the mud removing section (30), and more than one mud removing cutter (43) which scrapes mud in the tooth groove (32) through the tooth groove (32) when moving along the straight section (411) is arranged on the girdle belt (41);
the annular belt (41) is provided with a plurality of mud removing cutters (43) for simultaneously scraping mud in a plurality of tooth grooves (32), and the mud removing cutters (43) are uniformly and alternately arranged around the annular belt (41);
the mud removing cutter (43) is hinged on the endless belt (41) and can swing back and forth around the hinge axis in the plane where the running track of the mud removing cutter (43) is located, and an elastic mechanism for elastically blocking the swinging of the mud removing cutter (43) is further arranged on the endless belt (41).
2. The crawler belt running gear according to claim 1, wherein: the driving assembly (42) comprises a mounting seat (421) fixedly mounted on the bracket (1), more than two driving chain wheels (422) mounted on the mounting seat (421) and a rotary driving mechanism for driving one of the driving chain wheels (422) to rotate, and the endless belt (41) is a chain belt wound on more than two driving wheels.
3. The crawler belt running gear according to claim 2, wherein: the rotary driving mechanism comprises a rotary driving piece of the belt wheel unit (2), and the rotary driving piece is connected with a driving chain wheel (422) through a transmission mechanism (423); the mounting seat (421) is provided with a tensioning wheel of the elastic tensioning ring belt (41).
4. The crawler belt running gear according to claim 1, wherein: the elastic mechanism comprises two abutment seats (44) fixedly connected to the endless belt (41), the two abutment seats (44) are respectively arranged on two sides of the mud removing cutter (43), and a telescopic spring (45) is arranged between each abutment seat (44) and the mud removing cutter (43) in a pressure equalizing mode.
5. The crawler belt running gear according to claim 1, wherein: when each mud removing cutter (43) moves to the flat section (411), the mud removing cutters are obliquely arranged along the direction from top to bottom to the running direction of the flat section (411).
6. The crawler belt running gear according to any one of claims 1 to 5, wherein: a mud guard (46) is fixedly arranged between the straight section (411) and the mud removing section (30), and a chute (461) for the mud removing cutters (43) to pass through is formed in the mud guard (46) corresponding to each mud removing cutter (43).
7. The crawler belt running gear according to claim 6, wherein: one end of the mud guard (46) is provided with a channel (462) corresponding to each mud removing cutter (43) for the mud removing cutters (43) to pass through and scraping mud on the mud removing cutters (43).
8. The crawler belt running gear according to any one of claims 1 to 5, wherein: the belt wheel unit (2) is provided with a plurality of crawler support wheels (21) for supporting the mud removing section (30) and keeping the mud removing section (30) horizontally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711062579.4A CN107697173B (en) | 2017-11-02 | 2017-11-02 | Crawler belt walking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711062579.4A CN107697173B (en) | 2017-11-02 | 2017-11-02 | Crawler belt walking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107697173A CN107697173A (en) | 2018-02-16 |
| CN107697173B true CN107697173B (en) | 2023-09-26 |
Family
ID=61178185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711062579.4A Active CN107697173B (en) | 2017-11-02 | 2017-11-02 | Crawler belt walking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107697173B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230053896A1 (en) * | 2020-01-17 | 2023-02-23 | Robert John Haas | Track cleaning system for tractors |
| CN113548122B (en) * | 2021-07-29 | 2023-07-21 | 襄阳金美科林农业开发有限公司 | Remote control walking robot for inclined plane of ditch in orchard |
| CN116873063B (en) * | 2023-09-04 | 2024-03-12 | 泉州市成裕机械设备有限公司 | Anti-winding crawler belt driving wheel mechanism based on side guide plate |
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| JPH0735271U (en) * | 1993-12-14 | 1995-06-27 | 新キャタピラー三菱株式会社 | Mud accumulation prevention device for truck frame |
| JPH08310457A (en) * | 1995-05-16 | 1996-11-26 | Shin Caterpillar Mitsubishi Ltd | Mud sedimentary preventer of track frame |
| KR970001603U (en) * | 1995-06-30 | 1997-01-21 | Earthquake prevention device of tracked traveling device | |
| JP2000247269A (en) * | 1999-02-24 | 2000-09-12 | Hitachi Constr Mach Co Ltd | Crawler vehicle |
| JP2004299664A (en) * | 2003-03-19 | 2004-10-28 | Komatsu Ltd | Crawler link polishing device and crawler traveling device |
| CN106428269A (en) * | 2016-10-25 | 2017-02-22 | 中南大学 | Crawler walking chassis with grouser angle adjustable |
| CN206049840U (en) * | 2016-07-19 | 2017-03-29 | 徐州徐工挖掘机械有限公司 | A kind of crawler of excavator automatic mud remover for digger |
| CN207466815U (en) * | 2017-11-02 | 2018-06-08 | 湖南农业大学 | Crawler unit |
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2017
- 2017-11-02 CN CN201711062579.4A patent/CN107697173B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735271U (en) * | 1993-12-14 | 1995-06-27 | 新キャタピラー三菱株式会社 | Mud accumulation prevention device for truck frame |
| JPH08310457A (en) * | 1995-05-16 | 1996-11-26 | Shin Caterpillar Mitsubishi Ltd | Mud sedimentary preventer of track frame |
| KR970001603U (en) * | 1995-06-30 | 1997-01-21 | Earthquake prevention device of tracked traveling device | |
| JP2000247269A (en) * | 1999-02-24 | 2000-09-12 | Hitachi Constr Mach Co Ltd | Crawler vehicle |
| JP2004299664A (en) * | 2003-03-19 | 2004-10-28 | Komatsu Ltd | Crawler link polishing device and crawler traveling device |
| CN206049840U (en) * | 2016-07-19 | 2017-03-29 | 徐州徐工挖掘机械有限公司 | A kind of crawler of excavator automatic mud remover for digger |
| CN106428269A (en) * | 2016-10-25 | 2017-02-22 | 中南大学 | Crawler walking chassis with grouser angle adjustable |
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| CN107697173A (en) | 2018-02-16 |
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