CN210113166U - Adjustable chassis and crawler excavator - Google Patents
Adjustable chassis and crawler excavator Download PDFInfo
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- CN210113166U CN210113166U CN201920882005.XU CN201920882005U CN210113166U CN 210113166 U CN210113166 U CN 210113166U CN 201920882005 U CN201920882005 U CN 201920882005U CN 210113166 U CN210113166 U CN 210113166U
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Abstract
The utility model relates to an excavator chassis, which aims to solve the problem that the angle of a track beam of the existing excavator chassis can not be adjusted relative to an underframe; the adjustable chassis comprises an underframe and crawler beams arranged on the left side and the right side of the underframe, and is characterized in that the crawler beams are hinged to the underframe, the hinged axes of the crawler beams are consistent with the length direction of the crawler beams, hydraulic oil cylinders are arranged between the crawler beams and the underframe, and the crawler beams are pushed by the telescopic hydraulic oil cylinders to rotate up and down around the hinged axes of the crawler beams. The utility model discloses in, when machinery need transversely be through having sloped narrow passageway, can adjust the angle of the relative chassis of track beam through hydraulic cylinder, also adjust the angle between track landing surface and the chassis to realize adjusting the horizontal inclination of excavator on domatic, and then reduce the risk of tumbling of excavator on domatic, improve its trafficability characteristic.
Description
Technical Field
The utility model relates to an excavator chassis, more specifically say, relate to an adjustable chassis and crawler-type excavator.
Background
The hydraulic excavator is a common engineering machine and is widely applied to the engineering of mining, building traffic, water conservancy and hydropower and the like. The chassis is an important part, not only bears the self weight of the whole excavator and the reaction force generated when the working device excavates, but also is a mounting bracket with four wheels, so that the excavator is ensured to move in a working field.
The excavator chassis generally comprises a left crawler belt beam frame, an underframe and a right crawler belt beam frame. In the existing structure, the chassis of the excavator is of an integral fixed structure, namely a left crawler beam and a right crawler beam are respectively welded on the left side and the right side of an underframe, so that the chassis does not have an adjusting function, and the passing performance of the chassis is generally limited. In order to improve the passing performance of the excavator, the track beam and the underframe are in adjustable connection, and the connection mode comprises that the underframe moves up and down relative to the track beam or the track beam moves left and right relative to the underframe. The chassis with the structure can improve the passing performance of the excavator under certain working conditions, but the passing performance of the excavator cannot be improved under certain working conditions, for example, when the excavator needs to transversely pass through narrow passages with slopes, the excavator cannot pass through the narrow passages due to the risk that the excavator tilts.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to the relative chassis of crawler beam on current excavator chassis problem that can not the angular adjustment, and provide an adjustable chassis and crawler excavator for the angularly adjustable of the relative chassis of crawler beam, thereby adjust the relative angle of crawler beam and chassis when needs transversely pass through some have sloping narrow passageways, thereby reduce the degree of inclination of excavator on domatic, reduce the risk of toppling.
The utility model discloses a realize that the technical scheme of its purpose is like: the adjustable chassis comprises an underframe and crawler beams arranged on the left side and the right side of the underframe, and is characterized in that the crawler beams are hinged to the underframe, the hinged axes of the crawler beams are consistent with the length direction of the crawler beams, hydraulic oil cylinders are arranged between the crawler beams and the underframe, and the crawler beams are pushed to stretch and retract to rotate up and down around the hinged axes of the crawler beams. The utility model discloses in, when machinery need transversely be through having sloped narrow passageway, can adjust the angle of the relative chassis of track beam through hydraulic cylinder, also adjust the angle between track landing surface and the chassis to realize adjusting the horizontal inclination of excavator on domatic, and then reduce the risk of tumbling of excavator on domatic, improve its trafficability characteristic.
Further, in the adjustable chassis, each side of the underframe is hinged with the crawler beam at the side at least at two positions spaced back and forth through coaxial pin shafts. Furthermore, the articulated seat that is used for articulating with the chassis on the crawler beam is arranged on the medial surface of crawler beam, the articulated seat that is used for articulating with the crawler beam on the chassis is arranged on the side of chassis. The inner side surface of the crawler beam refers to the right side surface of the left crawler beam and the left side surface of the right crawler beam.
Furthermore, in the adjustable chassis, two ends of the hydraulic oil cylinder are respectively hinged to the top of the crawler beam and the top of the underframe. Further, two hydraulic oil cylinders are arranged between the underframe and the crawler beam on each side, and the two hydraulic oil cylinders on each side are respectively positioned above the foremost hinged position and above the rearmost hinged position between the crawler beam on the side and the underframe.
Furthermore, in the adjustable chassis, the chassis is a box-shaped structure formed by welding a bottom plate, a cover plate, a support cylinder and side plates, and the left side and the right side of the cover plate are both bent downwards and the bent parts are welded with the bottom plate and the side plates. The chassis is of an X-shaped box structure, the side plates comprise a left front side plate and a right front side plate which are positioned on the front side, a left rear side plate and a right rear side plate which are positioned on the rear side, a front left side plate and a rear left side plate which are positioned on the left side, and a front right side plate and a rear right side plate which are positioned on the right side, the upper edges and the bottom edges of the side plates are respectively welded with the cover plate and the bottom plate, the right ends of the left front side plate, the left rear side plate, the front left side plate and the rear left side plate are welded with the supporting cylinder, the left ends of the right front side plate, the right rear side plate, the front right side plate and the rear right side plate are welded with the supporting cylinder, the downward bent part of the right front part of the cover plate is welded with the right ends of the right front side plate and the front right side plate and the front part of the right side of the bottom plate; the part bent downwards at the front part of the left side of the cover plate is welded with the left ends of the left front side plate and the front left side plate and the front part of the left side edge of the bottom plate, and the part bent downwards at the rear part of the left side of the cover plate is welded with the left ends of the left rear side plate and the rear left side plate and the rear part of the left side edge of the bottom plate.
Further, in the adjustable chassis, the crawler beam is of a box-type structure, and the top plate and the inner side plate of the crawler beam are formed by bending steel plates, that is, the top plate and the inner side plate are of an integrated structure formed by bending a steel plate.
The utility model discloses a realize that the technical scheme of its purpose is like: the crawler excavator is characterized by comprising the adjustable chassis.
Compared with the prior art, the utility model discloses in, when machinery need transversely be through having sloping narrow passage, can adjust the angle of the relative chassis of track beam through hydraulic cylinder, also adjust the angle between track landing surface and the chassis to realize adjusting the horizontal inclination of excavator on domatic, and then reduce the risk of tumbling of excavator on domatic, improve its trafficability characteristic.
Drawings
Fig. 1 is a schematic structural diagram of the adjustable chassis of the present invention.
Fig. 2 is a schematic structural view of the track beam in the middle of the utility model.
Fig. 3 is a schematic view of the structure of the chassis.
Fig. 4 is a schematic view of an excavator traversing a narrow passageway having two sloped sides.
Fig. 5 is a schematic view of an excavator traversing a narrow passageway having a side slope.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
As shown in fig. 1 and 3, the adjustable chassis in the present embodiment is a chassis of a crawler excavator, and the chassis includes an underframe and a left track beam 1 mounted on the left side of the underframe and a right track beam 2 mounted on the right side of the underframe, wherein the left track beam 1 is symmetrical to the right track beam 2 about a central plane. The left crawler beam 1 and the right crawler beam 2 have the same connecting structure with the underframe 3.
As shown in fig. 1 and 3, the underframe 3 is a box-shaped structure formed by welding a bottom plate 32, a cover plate 31, a support cylinder 33 and side plates, wherein the side plates include a left front side plate and a right front side plate located on the front side, a left rear side plate 303 and a right rear side plate 301 located on the rear side, a front left side plate 304 and a rear left side plate 305 located on the left side, and a front right side plate 302 and a rear right side plate located on the right side, the upper edges and the lower edges of the side plates are respectively welded with the cover plate 31 and the bottom plate 32, and the right ends of the left front side plate, the left rear side plate 303, the front left side plate 304 and the rear left side plate; the left ends of the right front side plate, right rear side plate 301, front right side plate 302 and rear right side plate are also welded to the support cylinder 33. The downward bent part of the right front part of the cover plate is welded with the right ends of the right front side plate and the front right side plate 302 and the front part of the right side edge of the bottom plate 32, and the downward bent part of the right rear part of the cover plate is welded with the right ends of the right rear side plate and the rear right side plate 301 and the rear part of the right side edge of the bottom plate 32; the downward bent part of the left front part of the cover plate is welded with the left ends of the left front side plate and the front left side plate 304 and the left front side of the bottom plate, and the downward bent part of the left rear part of the cover plate is welded with the left ends of the left rear side plate 303 and the rear left side plate 305 and the left rear side of the bottom plate. The chassis is formed into an X-shaped box-like structure by side plates, a bottom plate 32, a cover plate 31, and a support cylinder 33.
As shown in fig. 3, a crawler beam hinge base 34 is welded to the outer side surface of each of the downward bent portions on the left and right sides of the cover plate 31, and a hydraulic cylinder hinge base is provided on the upper surface of the cover plate and above the crawler beam hinge base. The hinge holes of the two crawler beam hinge seats 34 on the same side of the chassis are coaxial, and the hinge holes of the two hydraulic oil cylinder hinge seats on the same side of the chassis are also coaxial.
As shown in fig. 2, the left crawler beam 1 is also a box-type structure, and a guide wheel mounting bracket is installed at the front end thereof, and a hydraulic motor mounting bracket is installed at the rear end thereof. The top plate 13, the inner side plate 14 and the outer side plate of the left crawler beam 1 are of an integral structure formed by bending a steel plate, a U-shaped bent plate with a downward opening is formed, a bottom plate is welded at the opening of the U-shaped bent plate, and a guide wheel mounting support and a hydraulic motor mounting support are respectively welded at the front end and the rear end of the U-shaped bent plate, so that a box-type structure is formed. Two crawler beam hinge seats 11 are also arranged on the inner side surface of the inner side plate of the left crawler beam, the two crawler beam hinge seats 11 on the left crawler beam 1 are correspondingly matched with the two crawler beam hinge seats 34 on the left side of the underframe 3, and a front hinge structure and a rear hinge structure are formed through a pin shaft 5. The right track beam 2 is also in hinged connection with the undercarriage at the right side thereof by the same structure.
As shown in fig. 2 and fig. 1, two hydraulic cylinder hinge seats 12 are also arranged on the top surface of the left track beam 1, the two hydraulic cylinder hinge seats 12 are respectively hinged to piston rods of two hydraulic cylinders 4 through pin shafts 41, and cylinder ends of the two hydraulic cylinders 4 are hinged to two hydraulic cylinder hinge seats on the left side of the underframe 3 through pin shafts. The hydraulic oil cylinder 4 is also arranged between the right crawler beam 2 and the underframe 2 in the connection relationship.
Figure 4 figure 5 shows a crawler excavator having an undercarriage of the above construction. When the excavator runs on the flat ground, the angle between the crawler beam and the underframe is adjusted through the hydraulic oil cylinder, so that the ground landing surface of the crawler on the left crawler beam and the ground landing surface of the crawler on the right crawler beam are in the same plane, and the plane is vertical to the axial lead of the supporting cylinder of the underframe. When the excavator needs to transversely pass through a narrow channel (such as a ditch) with a slope on one side or slopes on two sides, the angle between the left crawler beam and the underframe can be adjusted through the hydraulic oil cylinder 4, so that the crawler landing surface on the left crawler beam and the crawler landing surface on the right crawler beam are positioned on the same plane with the respective supporting ground to form surface contact, the transverse inclination angle of the excavator on the slope surface can be adjusted within a certain range, the tipping risk of the excavator on the slope surface is reduced, and the passing performance of the excavator is improved. In addition, when passing through a slope, the crawler belt and the supporting ground are always in surface contact, so that the crawler belt has high gripping ability, and the damage to the ground is reduced.
Claims (10)
1. The adjustable chassis comprises an underframe and crawler beams arranged on the left side and the right side of the underframe, and is characterized in that the crawler beams are hinged to the underframe, the hinged axes of the crawler beams are consistent with the length direction of the crawler beams, hydraulic oil cylinders are arranged between the crawler beams and the underframe, and the crawler beams are pushed by the telescopic hydraulic oil cylinders to rotate up and down around the hinged axes of the crawler beams.
2. The adjustable undercarriage of claim 1 wherein each side of the undercarriage is hinged to the side track beam by coaxial pin joints at least at two spaced fore and aft locations.
3. The adjustable undercarriage of claim 2 wherein the track bar is provided with an articulation seat for articulation with an undercarriage on an inner side of the track bar, and wherein the undercarriage is provided with an articulation seat for articulation with the track bar on a side of the undercarriage.
4. The adjustable undercarriage of claim 3 wherein the hydraulic ram is pivotally connected at each end to a top of the track beam and a top of the undercarriage.
5. The adjustable undercarriage of claim 4 wherein two hydraulic rams are provided between the undercarriage and the track beam on each side, the two hydraulic rams on each side being located above a forwardmost articulation point and above a rearwardmost articulation point between the track beam and the undercarriage on that side respectively.
6. The adjustable chassis according to any one of claims 1 to 5, wherein the chassis is a box-shaped structure formed by welding a bottom plate, a cover plate, a support cylinder and side plates, and the left side and the right side of the cover plate are both bent downwards and the bent parts are welded with the bottom plate and the side plates.
7. The adjustable chassis according to any one of claims 1 to 5, wherein the track beam is of a box-type structure, and the top plate and the inner side plate of the track beam are formed by bending steel plates.
8. The adjustable chassis of claim 6, wherein the undercarriage is an "X" shaped box-type structure, the side plates comprise a left front side plate and a right front side plate which are positioned at the front side, a left rear side plate and a right rear side plate which are positioned at the rear side, a front left side plate and a rear left side plate which are positioned at the left side, a front right side plate and a rear right side plate which are positioned at the right side, the upper edge and the bottom edge of the side plate are respectively welded with the cover plate and the bottom plate, the right ends of the left front side plate, the left rear side plate, the front left side plate and the rear left side plate are welded with the supporting cylinder, the left ends of the right front side plate, the right rear side plate, the front right side plate and the rear right side plate are welded with the supporting cylinder, the part bent downwards at the front part of the right side of the cover plate is welded with the right ends of the right front side plate and the front right side plate and the front part of the right side edge of the bottom plate, and the part bent downwards at the rear part of the right side of the cover plate is welded with the right ends of the right rear side plate and the rear right side plate and the rear part of the right side edge of the bottom plate; the part bent downwards at the front part of the left side of the cover plate is welded with the left ends of the left front side plate and the front left side plate and the front part of the left side edge of the bottom plate, and the part bent downwards at the rear part of the left side of the cover plate is welded with the left ends of the left rear side plate and the rear left side plate and the rear part of the left side edge of the bottom plate.
9. The adjustable undercarriage of claim 8 wherein the hinged mounts on the undercarriage for articulation with the track beams are disposed on an outer side of the cover plate left front downward bend, left rear downward bend, right front downward bend, right rear downward bend.
10. A crawler excavator characterized by comprising an adjustable chassis according to any one of the preceding claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920882005.XU CN210113166U (en) | 2019-06-13 | 2019-06-13 | Adjustable chassis and crawler excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920882005.XU CN210113166U (en) | 2019-06-13 | 2019-06-13 | Adjustable chassis and crawler excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210113166U true CN210113166U (en) | 2020-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920882005.XU Active CN210113166U (en) | 2019-06-13 | 2019-06-13 | Adjustable chassis and crawler excavator |
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| Country | Link |
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| CN (1) | CN210113166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117775130A (en) * | 2024-02-26 | 2024-03-29 | 湖南千智机器人科技发展有限公司 | Walking chassis, control method of walking chassis and application method |
-
2019
- 2019-06-13 CN CN201920882005.XU patent/CN210113166U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117775130A (en) * | 2024-02-26 | 2024-03-29 | 湖南千智机器人科技发展有限公司 | Walking chassis, control method of walking chassis and application method |
| CN117775130B (en) * | 2024-02-26 | 2024-05-17 | 湖南千智机器人科技发展有限公司 | Walking chassis, control method of walking chassis and application method |
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