CN219056428U - Rail-changeable chassis and working machine - Google Patents
Rail-changeable chassis and working machine Download PDFInfo
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- CN219056428U CN219056428U CN202320252282.9U CN202320252282U CN219056428U CN 219056428 U CN219056428 U CN 219056428U CN 202320252282 U CN202320252282 U CN 202320252282U CN 219056428 U CN219056428 U CN 219056428U
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Abstract
The utility model relates to a chassis, in order to solve the problem that the existing orbital transfer chassis is easy to deform and damage under the action of large track gauge and heavy load, the utility model constructs an orbital transfer chassis and an operation machine, wherein the orbital transfer chassis comprises a chassis provided with a slewing bearing and a track beam which is telescopically sleeved with the chassis through a telescopic arm, and is characterized in that a supporting device is arranged on the chassis, the supporting device comprises a supporting leg and a supporting oil cylinder, and the tail end of the supporting leg is provided with a supporting sole which is used for contacting with the ground; the support cylinder is used for driving the support leg to enable the tail end of the support leg to move up and down. When the track-changing chassis is in a wide-rail state, the supporting device supports the chassis, so that the stress between the telescopic arm and the chassis on the track beam in the chassis is reduced, and the telescopic arm and the chassis are prevented from being deformed and damaged due to long-time heavy load.
Description
Technical Field
The present utility model relates to a chassis, and more particularly, to a track-change chassis and a working machine.
Background
Many work machines, such as rotary drilling rigs, continuous wall trenchers, crawler cranes, etc., employ crawler travel chassis, most of which have a constant gauge, i.e., a constant distance between the tracks on both sides. In some work machines, the chassis is provided with a variable gauge adjustment type in order to achieve both stability of the machine during operation and passability of the machine during movement. In the chassis with the track capable of being adjusted in a changeable way, the chassis comprises a chassis and track beams arranged on two sides of the chassis, a slewing bearing device for supporting a vehicle body on the upper part of the machine is arranged on the chassis, the track beams are in telescopic sleeve joint with the chassis through telescopic arms and push the telescopic arms to slide in a telescopic way relative to the chassis through hydraulic cylinders, and when the machine walks, the track beams move towards the middle surface direction of the chassis to reduce the track gauge between the two track beams so as to obtain better trafficability; the track beams move back to the middle surface direction of the chassis during operation, and the track gauge between the track beams is increased, so that better stability is obtained.
In the existing track-changing machinery, after the track gauge between the track beams is increased, the sleeving length of the telescopic arms on the track beams and the underframe is reduced, the same vertical load acts on the underframe, the bending moment on the telescopic arms on the underframe and the track beams is increased, and under the action of heavy load and large track gauge of the machine for a long time, the telescopic arms on the underframe and the track beams are easy to bend, deform or be easy to damage.
Disclosure of Invention
The utility model aims to solve the technical problem that the existing track-changing chassis is easy to deform and damage under the action of large track gauge and heavy load, and provides the track-changing chassis and the working machine.
The technical scheme for achieving the purpose of the utility model is as follows: the track-changing chassis is characterized in that a supporting device is arranged on the chassis and comprises supporting legs and supporting oil cylinders, and supporting soles for contacting with the ground are arranged at the tail ends of the supporting legs; the support cylinder is used for driving the support leg to enable the tail end of the support leg to move up and down.
According to the utility model, when the track-changing chassis is in a wide-rail state, the support oil cylinder drives the support legs to enable the tail ends of the support legs to move downwards, and the support soles are contacted with the ground, so that the chassis is supported, the stress between the telescopic arms and the chassis on the track beams in the chassis is reduced, and the telescopic arms and the chassis are prevented from being deformed and damaged due to long-time heavy load.
In the track-changing chassis, the supporting device is arranged on the front side and/or the rear side of the chassis, and the supporting device is positioned on the middle surface of the chassis or is symmetrically arranged on the left side and the right side of the middle surface of the chassis. The support means may be arranged in the middle of the chassis, either on the front side of the chassis, on the rear side of the chassis, or on both the front and rear side of the chassis. The supporting devices may be symmetrically disposed about the middle surface of the chassis, for example, a supporting device may be disposed at each of the left and right ends of the rear side of the chassis, or a supporting device may be disposed at each of the left and right ends of the front side of the chassis. The middle surface of the chassis, namely the middle surface of the chassis, and the chassis and the structure of the chassis are bilaterally symmetrical about the middle surface.
In the track-changing chassis, the head ends of the supporting legs are hinged with the chassis through the pin shafts, and the two ends of the supporting oil cylinder are respectively connected with the chassis and the supporting legs through the pin shafts. When the supporting oil cylinder stretches out and draws back, the tail ends of the supporting legs swing up and down, the underframe can be supported when the supporting sole contacts with the ground, and the supporting legs swing up and are separated from contact with the ground.
In the track-changing chassis, the supporting legs can be vertically arranged and comprise a sleeve fixed relative to the chassis and a telescopic cylinder capable of extending up and down in the sleeve, and the supporting soles are arranged at the lower ends of the telescopic cylinder; the support oil cylinder is arranged in the supporting leg, and two ends of the support oil cylinder are respectively connected with the sleeve and the telescopic cylinder.
In the track-changing chassis, the sleeve can be fixedly connected with the chassis, for example, the sleeve is welded with the chassis, the sleeve can also be vertically embedded and installed on the chassis, even the upper end of the sleeve protrudes from the upper part of the chassis, so that the distance between the supporting sole and the ground is increased when the telescopic cylinder is retracted, and the influence of the supporting device on the trafficability of the chassis is reduced. The sleeve can also be connected with the underframe through a horizontal pin shaft which is horizontally arranged, and the sleeve can swing around the horizontal pin shaft between a vertical direction and a horizontal direction. When the underframe is not required to be supported, the sleeve swings upwards, and the sleeve and the underframe can be fixedly connected by using a limiting pin or a fastening piece to be kept in a horizontal state. When the underframe is required to be supported, the limiting pin or the fastener is removed to enable the sleeve to rotate downwards to be in a vertical state, and then the vertical state of the sleeve is locked and kept through the limiting pin and other similar devices.
In the track-changing chassis of the present utility model, the support device may further include a horizontal arm beam, a first end of the horizontal arm beam is connected to the chassis, a second end of the horizontal arm beam extends in a front-rear direction in a direction away from the chassis, and the support leg is disposed at the second end of the horizontal arm beam. Further, the horizontal arm beam comprises a first arm beam connected with the underframe and a second arm beam telescopically sleeved with the first arm beam, and the supporting leg is arranged on the second arm beam.
In the track-changing chassis, a connecting seat for connecting with the horizontal arm beam is arranged on the chassis, the first end of the horizontal arm beam is connected with the connecting seat through a pin shaft which is horizontally arranged, a limiting part is arranged on the chassis, and the horizontal arm beam is detachably and fixedly connected below the limiting part at a position close to the first end through a bolt.
In the track-changing chassis of the utility model, a connecting seat for connecting with the horizontal arm beam can be arranged on the chassis, the first end of the horizontal arm beam is connected with the connecting seat through a vertical pin shaft which is vertically arranged, and the horizontal arm beam can swing between the front and back direction and the left and right direction around the vertical pin shaft.
The technical scheme for achieving the purpose of the utility model is as follows: the construction of the working machine is characterized by comprising the rail-changing chassis, and the working machine can be a rotary drilling rig, a crawler crane, an excavator, a continuous wall grooving machine and the like.
Compared with the prior art, when the track-changing chassis is in a wide-rail state, the supporting device supports the chassis, so that the stress between the telescopic arm and the chassis on the track beam in the chassis is reduced, and the telescopic arm and the chassis are prevented from being deformed and damaged due to long-time heavy load.
Drawings
Fig. 1 is a schematic view of the structure of an example of a track-change chassis of the present utility model.
Fig. 2 is a schematic illustration of the connection of a support device to a chassis, 6, in an example of a track-change chassis of the present utility model.
Fig. 3 is a second schematic diagram of connection between a supporting device and a chassis in an example of the track-change chassis of the present utility model.
Part names and serial numbers in the figure:
The device comprises a chassis 2, a slewing bearing 21, a limiting part 22, a connecting seat 23 and a pin 24.
The support device 3, the horizontal arm beam 31, the first arm beam 311, the second arm beam 312, the bolt 313, the supporting leg 32, the sleeve 321, the telescopic cylinder 322 and the supporting sole 33.
Detailed Description
The following describes specific embodiments with reference to the drawings.
Fig. 1 shows a chassis structure of a work machine according to the utility model. The chassis is the chassis of crawler-type working machinery, and the working machinery can be a crawler crane, a rotary drilling rig, a continuous wall grooving machine, an excavator and the like.
As shown in fig. 1, the chassis includes an undercarriage 2 and track beams 1 disposed on both left and right sides of the undercarriage. The underframe 2 is H-shaped and is provided with a slewing bearing 21 at the center thereof. The slewing bearing 21 is used for connection with an upper body of the work machine so that the upper body can perform slewing motion relative to the chassis.
The underframe 2 is provided with two main beams which run left and right, and the two main beams are arranged in parallel and at intervals front and back. The inner side of the track beam 1 is provided with a telescopic arm (not shown in the figure), the telescopic arm is in sliding sleeve joint with the main beam of the chassis 2, the track beam 1 is driven by a hydraulic oil cylinder to slide left and right relative to the chassis through sliding fit of the telescopic arm and the main beam of the chassis, the distance change between the two track beams of the chassis is realized, and the track width adjustment is realized. When the working machine works, the distance between the two crawler beams of the chassis is increased, so that the chassis is in a wide rail state, the stability of the working machine is improved, and when the working machine walks or transports, the distance between the two crawler beams of the chassis is reduced, and the trafficability of the working machine is improved.
As shown in fig. 1, a supporting device 3 is arranged in the middle of the front side of the chassis 2 for supporting the chassis when the chassis is in a wide rail state. As shown in fig. 2 and 3, the supporting device 3 comprises a horizontal arm beam 31, a supporting leg 32 and a supporting cylinder (not shown in the figure), wherein the tail end of the supporting leg 32 is provided with a supporting sole 33 for contacting the ground; the support cylinder is used for driving the support leg to enable the tail end of the support leg to move up and down.
The first end of the horizontal arm beam 31 is connected to the chassis 2, the second end of the horizontal arm beam 31 extends in a front-rear direction, i.e. forward, away from the chassis, and the leg 32 is arranged at the second end of the horizontal arm beam, i.e. at the front end of the horizontal arm beam. A supporting sole 33 is attached to the lower ends of the legs.
The support leg 32 is vertically arranged and comprises a sleeve 321 fixed relative to the underframe and a telescopic cylinder 322 capable of extending and retracting up and down in the sleeve 321, and the support sole 33 is arranged at the lower end of the telescopic cylinder; the support cylinder is arranged in the supporting leg, and two ends of the support cylinder at two ends are respectively connected with the sleeve and the telescopic cylinder. The upper end of the sleeve (i.e. the head end of the supporting leg) is fixedly connected with the second end of the horizontal arm beam.
As shown in fig. 2 and 3, the horizontal arm beam 31 is composed of a first arm beam 311 connected to the chassis 2 and a second arm beam 312 telescopically coupled to the first arm beam 311, and the leg 32 is disposed on the second arm beam. When the support device 3 is needed to support the underframe 2, the position of the second arm beam 312 can be telescopically adjusted, so that the landing position of the supporting sole on the ground can be adjusted.
The underframe 2 is provided with a connecting seat 23 for being connected with a horizontal arm beam, a first end of the horizontal arm beam 31 is connected with the connecting seat 23 through a pin shaft 24 which is horizontally arranged, the underframe 2 is provided with a limiting part 22, and the horizontal arm beam 31 is detachably and fixedly connected below the limiting part at a position close to the first end through a bolt 313.
In some examples, the connection of the horizontal arm beam to the chassis may also be: the underframe is provided with a connecting seat which is used for being connected with the horizontal arm beam, the first end of the horizontal arm beam is connected with the connecting seat through a vertical pin shaft which is vertically arranged, and the horizontal arm beam can swing between the front and back direction and the left and right direction around the vertical pin shaft. When the underframe is required to be supported, the horizontal arm beam swings to the front-back direction, and when the underframe is not supported, the horizontal arm beam rotates to the left-right direction and correspondingly clings to the front side or the back side of the underframe.
In the above embodiment, when the track-changing chassis is in a wide-rail state, the support cylinder drives the support leg to enable the tail end of the support leg to move downwards, and the support sole is in contact with the ground, so that the chassis is supported, the stress between the telescopic arm and the chassis on the track beam in the chassis is reduced, and deformation and damage of the telescopic arm and the chassis due to long-time heavy load are avoided. When the support device is not needed for supporting the underframe, the horizontal arm beam and the underframe can be connected and removed, and the support device is detached.
The support device of the present utility model may have the following other forms, regardless of the traveling described above:
in some embodiments, the support means may also be arranged at the rear side of the chassis, or one support means at each of the front and rear sides of the chassis. The supporting devices may be symmetrically disposed about the middle surface of the chassis, for example, a supporting device may be disposed at each of the left and right ends of the rear side of the chassis, a supporting device may be disposed at each of the left and right ends of the front side of the chassis, or a supporting device may be disposed at each of the left and right ends of the front and rear sides of the chassis.
In some embodiments, the head end of the supporting leg may be connected to the chassis through a pin, the supporting cylinder is located outside the supporting leg, and two ends of the supporting cylinder are respectively connected to the chassis and the supporting leg through pins. When the supporting oil cylinder stretches out and draws back, the supporting legs swing up and down, the underframe can be supported when the supporting sole contacts with the ground, and the supporting legs swing up and are separated from contact with the ground.
In some embodiments, the sleeve of the supporting leg can be fixedly connected with the chassis, for example, the sleeve is welded with the chassis, the sleeve can be vertically embedded and installed on the chassis, and even the upper end of the sleeve protrudes from the upper portion of the chassis, so that the distance between the supporting sole and the ground is increased when the telescopic tube is retracted, and the influence of the supporting device on the trafficability of the chassis is reduced.
In some embodiments, the sleeve of the leg may be further connected to the chassis by a horizontal pin disposed horizontally, about which the sleeve is rotatable between a vertical direction and a horizontal direction. When the underframe is not required to be supported, the sleeve rotates upwards, and the sleeve can be connected with the underframe by using a limiting pin or a fastener to be kept in a horizontal state. When the underframe is required to be supported, the mechanism for limiting and fixing the sleeve is removed, the sleeve rotates downwards to be in a vertical state, and the vertical state of the sleeve is kept through a limiting pin and the like.
Claims (10)
1. The track-changing chassis comprises a chassis provided with a slewing bearing and a track beam which is sleeved with the chassis in a telescopic way through a telescopic arm, and is characterized in that a supporting device is arranged on the chassis, the supporting device comprises supporting legs and supporting oil cylinders, and the tail ends of the supporting legs are provided with supporting soles for contacting the ground; the support cylinder is used for driving the support leg to enable the tail end of the support leg to move up and down.
2. The track-change chassis according to claim 1, characterized in that the support means are provided on the front side and/or the rear side of the chassis, which support means are located on or symmetrically arranged about the middle plane of the chassis.
3. The track-changing chassis according to claim 1 or 2, wherein the head ends of the support legs are hinged to the chassis through pins, and the two ends of the support cylinder are respectively connected to the chassis and the support legs through pins.
4. The orbital transfer chassis according to claim 1 or 2, characterized in that the support legs are arranged vertically and comprise a sleeve fixed relative to the chassis and a telescopic tube which can be retracted up and down in the sleeve, and the support sole is arranged at the lower end of the telescopic tube; the support oil cylinder is arranged in the supporting leg, and two ends of the support oil cylinder are respectively connected with the sleeve and the telescopic cylinder.
5. The track-change chassis of claim 4, wherein the sleeve is fixedly connected to the chassis; or the sleeve is connected with the underframe through a horizontal pin shaft which is horizontally arranged, and the sleeve can swing around the horizontal pin shaft between a vertical direction and a horizontal direction.
6. The track-change chassis of claim 4, wherein the support device further comprises a horizontal arm beam, a first end of the horizontal arm beam being connected to the chassis, a second end of the horizontal arm beam extending in a front-to-back direction away from the chassis, the leg being disposed at the second end of the horizontal arm beam.
7. The track-change chassis of claim 6, wherein the horizontal arm beam comprises a first arm beam connected to the chassis, a second arm beam telescopically coupled to the first arm beam, and the leg is disposed on the second arm beam.
8. The track-changing chassis according to claim 6 or 7, characterized in that a connection seat for connection with the horizontal arm beam is provided on the chassis, a first end of the horizontal arm beam being connected with the connection seat by a horizontally arranged pin shaft; a limiting part is arranged on the underframe; the horizontal arm beam is detachably and fixedly connected below the limiting part at a position close to the first end of the horizontal arm beam through a bolt.
9. The track-changing chassis according to claim 6 or 7, characterized in that a connection seat for connection with the horizontal arm beam is provided on the chassis, a first end of the horizontal arm beam is connected with the connection seat through a vertically arranged vertical pin, and the horizontal arm beam can swing around the vertical pin between a front-rear direction and a left-right direction.
10. A work machine characterized by having a track-change chassis according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320252282.9U CN219056428U (en) | 2023-02-20 | 2023-02-20 | Rail-changeable chassis and working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320252282.9U CN219056428U (en) | 2023-02-20 | 2023-02-20 | Rail-changeable chassis and working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219056428U true CN219056428U (en) | 2023-05-23 |
Family
ID=86375856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320252282.9U Active CN219056428U (en) | 2023-02-20 | 2023-02-20 | Rail-changeable chassis and working machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219056428U (en) |
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2023
- 2023-02-20 CN CN202320252282.9U patent/CN219056428U/en active Active
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