CN217294723U

CN217294723U - Assembled crawler chassis with suspension vibration attenuation module

Info

Publication number: CN217294723U
Application number: CN202221282455.3U
Authority: CN
Inventors: 朱福平; 王瑶瑶; 郭金港; 魏勋利; 宋全
Original assignee: Science and Technology Branch of XCMG
Current assignee: Science and Technology Branch of XCMG
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-08-26
Anticipated expiration: 2032-05-26

Abstract

The utility model discloses an assembled crawler chassis with suspension damping module. The driving wheel and the tensioning device are arranged on the crawler rack, and the thrust wheel assembly is arranged below the crawler rack through the suspension vibration damping module; the crawler rack comprises a main body, a U-shaped seat beam and an L-shaped connecting plate; a horizontal part of the L-shaped connecting plate is fixed with a positioning pin and provided with a bolt mounting hole; the rear end of the main body is provided with a pair of installation seat plates, the inner side surfaces of the installation seat plates are provided with sliding grooves, the axle center of the rear guide wheel is provided with a pin shaft, and the end part of the pin shaft is provided with a symmetrical plane matched with the sliding grooves. The crawler chassis and the whole frame are connected in an assembling way, so that the assembly efficiency of four wheels with one belt can be improved, the maintainability can be improved, the redundant impurities of a frame welding assembly can be reduced, and the processing and the manufacturing are facilitated; the rear guide wheel is mounted with the slide groove of the main body of the track rack through a pin shaft flat structure, so that the rear guide wheel assembly is convenient to mount and dismount; the whole operation comfort performance is good, the structure is simple, the operation is convenient and reliable, and the operation is easy to realize.

Description

Assembled crawler chassis with suspension vibration attenuation module

Technical Field

The utility model relates to a crawler-type running gear, in particular to running gear on triangle rubber track chassis suitable for small-size shovel soil transportation machinery belongs to engineering machine tool technical field.

Background

The skid-steer loader is a compact engineering machine suitable for all-terrain, multi-working-condition and multifunctional operation, and is mainly divided into a tire type and a crawler type according to different running mechanisms. The tire type skid-steer loader has high maneuverability, and the crawler type skid-steer loader has the unique advantages in construction operation of muddy, wet and slippery non-paved road surfaces due to large ground contact area, small ground pressure and excellent passing performance.

The crawler-type skid steer loaders are mainly divided into crawler chassis with a suspension vibration damping structure and crawler chassis without the suspension vibration damping structure according to the chassis structure type. The suspension vibration damping mechanism is arranged between the thrust wheel assembly and the track rack, and is beneficial to improving the operation comfort performance of a driver, and can be more suitable for higher speed of the whole machine. The existing track rack connecting mechanism is complex, and the track rack is not easy to assemble and disassemble with the connection of the frame and the rear guide wheel assembly, so that subsequent maintenance is not convenient.

SUMMERY OF THE UTILITY MODEL

In order to improve the assemblability of track rack, the utility model provides an assembled crawler chassis with suspension damping module can extensively be applicable to operation fields such as agricultural, forestry.

The utility model discloses a following technical scheme realizes: an assembled crawler chassis with a suspension vibration damping module comprises a crawler rack fixedly connected with a frame, wherein a driving wheel and a tensioning device are mounted on the crawler rack, and a thrust wheel assembly is mounted below the crawler rack through the suspension vibration damping module;

the crawler frame comprises a main body, the front end and the rear end of the inner side surface of the main body are respectively fixed with a U-shaped seat beam, and an L-shaped connecting plate is fixed on the inner side of the U-shaped seat beam; the horizontal part of the L-shaped connecting plate is fixedly provided with a positioning pin for positioning with a frame, and the horizontal part of the L-shaped connecting plate is provided with a plurality of groups of bolt mounting holes for connecting with the frame;

the rear end of the main body is provided with a pair of mounting seat plates, and the rear guide wheel is mounted between the two mounting seat plates; the inner side surface of the mounting seat plate is provided with a sliding groove, the axle center of the rear guide wheel is provided with a pin shaft, and the end part of the pin shaft is provided with a symmetrical plane matched with the sliding groove.

It further comprises the following steps: the main body of the crawler rack is of an integrated punch forming structure.

Drag link joint is provided with to the side of the main part of track rack.

The lower side surface of the main body of the crawler belt rack is horizontal, and the upper side surface of the main body is inclined; the tensioning device is parallel to the upper side face of the main body, and a front guide wheel is mounted at the end part of the tensioning device; the rubber track is mounted on the drive wheel, the front guide wheel, the thrust wheel assembly and the rear guide wheel.

The tensioning device comprises a tensioning oil cylinder and a buffer spring assembly connected to the end part of the tensioning oil cylinder, and the tensioning oil cylinder and the buffer spring assembly are arranged in a slide way in the track rack main body; the rear guide wheel is arranged at one end, far away from the tensioning oil cylinder, of the buffer spring assembly.

The tensioning oil cylinder is of a lubricating grease adjusting structure, and lubricating grease is injected into the tensioning oil cylinder through filling equipment to push a cylinder rod of the tensioning oil cylinder to move forwards.

The suspension vibration attenuation module comprises a plurality of spring steel plates with the length increasing in a step-by-step manner, the front parts of the spring steel plates are provided with bolt holes, and all the spring steel plates are fixedly connected into a whole through bolts; the rear end of the spring steel plate with the longest bottom length is wound to form a cylindrical structure body, and the cylindrical structure body is connected with a center pin shaft of the thrust wheel assembly through a bolt.

The thrust wheel assembly is of a three-flange wheel body structure.

The main body, the U-shaped seat beam and the L-shaped connecting plate are fixed by welding.

The driving wheel is driven by a hydraulic motor or a servo motor, and the number of teeth of the driving wheel is odd.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the crawler chassis is connected with the whole machine frame in an assembling manner, so that on one hand, the assembling efficiency of four wheels and one belt can be improved, and the maintainability can be improved; on the other hand, the complexity of the frame welding assembly can be reduced, and the processing and the manufacturing are more facilitated; the rear guide wheel is mounted with the slide groove of the main body of the track rack through a pin shaft flat structure, so that the rear guide wheel assembly is convenient to mount and dismount;

2. the upper surface of the crawler belt rack main body forms a certain angle with the horizontal plane, so that the gap between the upper surface of the crawler belt rack and the crawler belt is reduced, and the soil accumulation in the operation process can be reduced;

3. the weight of the whole machine is borne by the suspension vibration attenuation module through the thrust wheel assembly, so that the whole operation comfort performance is good; the tensioning device adopts a sliding type tensioning structure and adopts lubricating grease adjustment, so that the structure is simple, convenient and reliable, and easy to realize.

Drawings

FIG. 1 is a schematic view of the connection between a crawler chassis and a frame of the present invention;

FIG. 2 is a schematic structural view of the crawler chassis of the present invention;

fig. 3 is a schematic structural view (first view angle) of the crawler frame of the present invention;

fig. 4 is a schematic structural view (second view angle) of the crawler frame of the present invention;

fig. 5 is a front view of the thrust wheel assembly of the present invention;

fig. 6 is a schematic perspective view of the thrust wheel assembly of the present invention;

fig. 7 is a schematic perspective view of the tensioner of the present invention;

fig. 8 is a schematic perspective view of the suspension damping module of the present invention;

fig. 9 is a schematic perspective view of the rear guide wheel of the present invention;

in the figure: 1. a frame; 2. a crawler chassis; 3. a drive wheel; 4. a track bed; 4-1, a main body; 4-2, mounting a seat plate; 4-21, a chute; 5. a tensioning device; 6. a rubber track; 7. a front guide wheel; 8. a suspension vibration reduction module; 9. a thrust wheel assembly; 10. a rear guide wheel; 10-1, a pin shaft; 10-2, a symmetry plane; 11. tensioning the oil cylinder; 12. a buffer spring assembly; 13. an L-shaped connecting plate; 14. a U-shaped seat beam.

Detailed Description

The following is a specific embodiment of the present invention, which will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, an assembled tracked undercarriage with suspended vibration damping modules is provided, and the tracked undercarriage 2 is fixedly connected to two sides of a frame 1. The track frame 4 is provided with a driving wheel 3 and a tensioning device 5, and the end part of the tensioning device 5 is connected with a front guide wheel 7. The tensioning degree of the rubber crawler 6 can be adjusted by the tensioning device 5, and the front guide wheel 7 plays a role of ensuring the rubber crawler 6 to be wound and guided correctly. And a thrust wheel assembly 9 is arranged below the crawler frame 4 through a suspension vibration damping module 8, and the thrust wheel assembly 9 bears the weight of the whole machine. The rear guide wheels 10 are mounted to the rear end of the track frame 4. Rubber tracks 6 are mounted on the drive wheel 3, front guide wheel 7, track roller assembly 9 and rear guide wheel 10.

Referring to fig. 3 and 4, the crawler belt rack 4 includes a main body 4-1, and the main body 4-1 is an integral punch-formed structure. The front end and the rear end of the inner side surface of the main body 4-1 are respectively welded and fixed with a U-shaped seat beam 14, and the inner side of the U-shaped seat beam 14 is welded and fixed with an L-shaped connecting plate 13. The horizontal part of the L-shaped connecting plate 13 is fixed with a positioning pin for positioning with the frame 1, and the horizontal part of the L-shaped connecting plate 13 is provided with a plurality of groups of bolt mounting holes for connecting with the frame 1. The main body 4-1, the U-shaped seat beam 14 and the L-shaped connecting plate 13 are welded to form an integrated track rack 4, reinforcing ribs are distributed on the integrated track rack to ensure the structural strength of the integrated track rack, and the L-shaped connecting plate 13 is fixed with the whole vehicle frame 1 in an assembling mode through positioning pins and bolts. Compared with the traditional welding type structure of the crawler chassis and the frame, the assembly type mounting structure can improve the assembly efficiency of four wheels and one belt and improve the maintainability; on the other hand, the redundancy and the complexity of the frame welding assembly can be reduced, and the processing and the manufacturing are more facilitated.

Referring again to fig. 9, the main body 4-1 has a pair of mounting plates 4-2 at a rear end thereof, and a rear guide wheel 10 is mounted between the two mounting plates 4-2. The inner side surface of the mounting seat plate 4-2 is provided with a sliding groove 4-21, the axis of the rear guide wheel 10 is provided with a pin shaft 10-1, and the end part of the pin shaft 10-1 is provided with a symmetrical plane 10-2 matched with the sliding groove 4-21. The rear guide wheel 10 adopts a flat structure and a structure that the installation seat plate 4-2 is slidably installed with the sliding groove 4-21, so that the rear guide wheel 10 is convenient to install and detach.

Referring to fig. 2 to 4, and fig. 6, the lower side of the main body 4-1 of the track frame 4 is horizontal, and the upper side of the main body 4-1 is inclined. The crawler-type machinery is mostly on muddy and wet road surfaces in the operating environment, and the upper surface of the crawler table frame main body 4-1 is of an inclined structure, so that the soil can be prevented from being gathered on the upper part of the table frame, and the service life of the crawler base plate is prolonged. Four groups of long round holes are arranged on the side surface of the main body 4-1 at the positions corresponding to the installation positions of the thrust wheel assemblies and are used for buffering the stroke of the thrust wheel assemblies. In addition, the main body 4-1 is provided with a tensioning device observation window, so that the movement condition of the tensioning device can be observed conveniently.

The tensioning device 5 is of an inclined structure and is parallel to the upper side face of the main body 4-1, and the tensioning device forms a certain angle with the horizontal plane. The tensioning device 5 comprises a tensioning cylinder 11 and a buffer spring assembly 12 connected to the end of the tensioning cylinder 11, and the tensioning cylinder 11 and the buffer spring assembly 12 are installed in an inclined slideway inside the main body 4-1 of the track frame 4. The rear guide wheel 10 is mounted on the damping spring assembly 12 at the end remote from the tensioning cylinder 11.

The tensioning oil cylinder 11 is of a lubricating grease adjusting structure, when the tension degree of the rubber track 6 needs to be adjusted, lubricating grease is injected into the tensioning oil cylinder 11 through filling equipment to push a cylinder rod of the tensioning oil cylinder 11 to move forwards, the buffer spring assembly 12 is further pushed to move forwards, the front guide wheel 7 is finally pushed to move and tension the rubber track 6, and the front guide wheel 7 plays a role of a tensioning wheel in the process.

Referring to fig. 2 and 7, the suspension vibration damping module 8 includes a plurality of spring steel plates with gradually increasing lengths, bolt holes are formed in the front portions of the spring steel plates, and all the spring steel plates are fixedly connected with the track frame 4 through bolts. The rear end of the spring steel plate with the longest bottom length is wound to form a cylindrical structure body, and the cylindrical structure body is connected with a center pin shaft of the thrust wheel assembly 9 through a bolt.

As shown in fig. 5 and 6, the thrust wheel assembly 9 has a three-flange wheel body structure. In this embodiment, the thrust wheel assembly 9 is formed by welding three-segment type hubs, and the anti-falling performance of the track can be effectively improved. The thrust wheel assembly 9 is connected with the suspension vibration damping module 8, so that the suspension vibration damping effect is achieved, and the whole machine can run more stably and reliably.

The driving wheel 3 is driven by a hydraulic motor or a servo motor, the number of teeth of the driving wheel 3 is odd, each tooth of the driving wheel component participates in meshing in the working cycle, the tooth surface structure of the driving wheel component is a linear tooth, and power is transmitted by matching with the rubber track core metal.

The upper side surface of the main body 4-1 of the crawler belt rack 4 is provided with drag chain plates, and the drag chain plates can provide certain function of lifting the rubber crawler belt 6 in the relative loosening process of the rubber crawler belt 6.

In the process of driving the whole machine,

the power source of the whole machine transmits power to the driving wheel 3, the driving wheel 3 is of a gear structure, the number of teeth on the driving wheel is odd, each gear tooth can be guaranteed to be engaged in the winding process of the rubber crawler 6, the power is transmitted to the rubber crawler 6 through matching with the core metal on the rubber crawler 6, further, the rubber crawler 6 moves relative to the ground, and the ground friction pushes the whole machine to move. In the movement process, the weight of the whole machine is transmitted to the suspension vibration attenuation modules 8 through the thrust wheel assemblies 9, so that the multiple groups of suspension vibration attenuation modules 8 become main carriers of the weight of the whole machine, and the effects of suspension vibration attenuation and improvement of driving comfort are further achieved.

Claims

1. An assembled crawler chassis with a suspension vibration attenuation module comprises a crawler rack (4) fixedly connected with a frame (1), wherein a driving wheel (3) and a tensioning device (5) are installed on the crawler rack (4), and a thrust wheel assembly (9) is installed below the crawler rack (4) through the suspension vibration attenuation module (8);

the method is characterized in that:

the crawler belt rack (4) comprises a main body (4-1), the front end and the rear end of the inner side surface of the main body (4-1) are respectively fixed with a U-shaped seat beam (14), and the inner side of the U-shaped seat beam (14) is fixed with an L-shaped connecting plate (13); a horizontal part of the L-shaped connecting plate (13) is fixedly provided with a positioning pin for positioning with the frame (1), and the horizontal part of the L-shaped connecting plate (13) is provided with a plurality of groups of bolt mounting holes for connecting with the frame (1);

the rear end of the main body (4-1) is provided with a pair of mounting seat plates (4-2), and a rear guide wheel (10) is mounted between the two mounting seat plates (4-2); the inner side surface of the mounting seat plate (4-2) is provided with a sliding groove (4-21), the axis of the rear guide wheel (10) is provided with a pin shaft (10-1), and the end part of the pin shaft (10-1) is provided with a symmetrical plane (10-2) matched with the sliding groove (4-21).

2. The fabricated crawler chassis with suspended vibration attenuation modules of claim 1, wherein: the main body (4-1) of the track rack (4) is of an integrated punch forming structure.

3. The fabricated crawler chassis with suspended vibration attenuation modules of claim 1, wherein: drag chain plates are arranged on the upper side face of the main body (4-1) of the crawler belt rack (4).

4. The fabricated track undercarriage with suspended vibration attenuation modules of claim 1, wherein: the lower side surface of a main body (4-1) of the crawler belt rack (4) is horizontal, and the upper side surface of the main body (4-1) is inclined; the tensioning device (5) is parallel to the upper side face of the main body (4-1), and a front guide wheel (7) is mounted at the end part of the tensioning device (5); the rubber crawler (6) is arranged on the driving wheel (3), the front guide wheel (7), the thrust wheel assembly (9) and the rear guide wheel (10).

5. The fabricated track undercarriage with suspended vibration attenuation modules of claim 4, wherein: the tensioning device (5) comprises a tensioning oil cylinder (11) and a buffer spring assembly (12) connected to the end part of the tensioning oil cylinder (11), and the tensioning oil cylinder (11) and the buffer spring assembly (12) are installed in a slide way in the main body (4-1) of the track rack (4); the rear guide wheel (10) is arranged at one end, far away from the tensioning oil cylinder (11), of the buffer spring assembly (12).

6. The fabricated track undercarriage with suspension damping modules of claim 5, wherein: the tensioning oil cylinder (11) adopts a lubricating grease adjusting structure, and lubricating grease is injected into the tensioning oil cylinder (11) through filling equipment to push a cylinder rod of the tensioning oil cylinder (11) to move forwards.

7. The fabricated track undercarriage with suspended vibration attenuation modules of claim 1, wherein: the suspension vibration attenuation module (8) comprises a plurality of spring steel plates with the length increasing in a step-by-step manner, the front parts of the spring steel plates are provided with bolt holes, and all the spring steel plates are fixedly connected into a whole through bolts; the rear end of the spring steel plate with the longest bottom length is wound to form a cylindrical structure body, and the cylindrical structure body is connected with a center pin shaft of the thrust wheel assembly (9) through a bolt.

8. The fabricated crawler chassis with suspended vibration attenuation modules of claim 1, wherein: the thrust wheel assembly (9) is of a three-flange wheel body structure.

9. The fabricated track undercarriage with suspended vibration attenuation modules of claim 1, wherein: the main body (4-1), the U-shaped seat beam (14) and the L-shaped connecting plate (13) are fixed by welding.

10. The fabricated crawler chassis with suspended vibration attenuation modules of claim 1, wherein: the driving wheel (3) is driven by a hydraulic motor or a servo motor, and the number of teeth of the driving wheel (3) is odd.