CN114368433B

CN114368433B - Caterpillar chassis guiding device and engineering machinery

Info

Publication number: CN114368433B
Application number: CN202210171675.7A
Authority: CN
Inventors: 金丹; 刘志杭; 王清锴; 刘存波; 阎鹏早; 王宏权; 王成军; 王志成; 闫召军; 张永震
Original assignee: Shantui Chutian Construction Machinery Co Ltd
Current assignee: Shantui Chutian Construction Machinery Co Ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2023-05-09
Anticipated expiration: 2042-02-24
Also published as: CN114368433A

Abstract

The invention relates to the technical field of engineering machinery, and particularly discloses a crawler chassis guiding device and engineering machinery, wherein the crawler chassis guiding device comprises a guide seat, a suspension mechanism and a guide wheel, and the suspension mechanism is pivoted with the guide seat; the guide wheel is in rotary fit with the suspension mechanism, and the rotating shaft of the guide wheel is parallel to the pivoting shaft of the suspension mechanism. When the construction machine equipped with the crawler chassis guide device runs on a rugged road, the guide wheel can swing around the pivot shaft due to the pivot of the suspension mechanism and the guide seat, so that the approach angle is changed. Therefore, when broken stone or steep slope road surfaces appear on the front road of the engineering machinery, the guide wheels can change the approach angle according to the actual road conditions, and the trafficability of the engineering machinery in different road conditions is further improved.

Description

Caterpillar chassis guiding device and engineering machinery

Technical Field

The invention relates to the technical field of engineering machinery, in particular to a crawler chassis guiding device and engineering machinery.

Background

Engineering machinery is an important component of equipment industry, is widely applied to the engineering construction field, and because construction environments are mostly distributed in mountains, hills, marshes and other areas, extremely harsh requirements are put on the trafficability of the engineering machinery, however, the traditional tire-type carrying and towing vehicle can only meet the common highway transportation, and cannot work in more complex terrain environments.

At present, an ordinary crawler-type engineering vehicle can meet the road transportation under the general working condition, however, under the complex working conditions such as a rugged mountain road and the like, as the front guide wheels cannot swing longitudinally, the approach angle is fixed, so that the climbing and passing performance of the crawler-type chassis are limited, particularly on broken stone and steep slope road surfaces, the impact and the destructive power suffered by the front guide wheels of the crawler-type chassis are huge, the passing performance is limited, the road surface with a larger gradient cannot be passed, the bump of a vehicle body is easily caused when the road surface passes through the rugged road surface, the influence on the structural strength and the riding comfort of the crawler-type chassis is larger, and the requirements of the traction and the transportation work of crawler-type construction equipment under the complex working condition cannot be met.

Disclosure of Invention

The invention aims at: the utility model provides a crawler chassis guider and engineering machine tool to solve among the relevant technique because anterior guide wheel can't vertically swing, its approach angle is fixed, leads to the climbing of crawler chassis and the limited problem of passing through the performance.

In one aspect, the present invention provides a crawler guide comprising:

a guide seat;

the suspension mechanism is pivoted with the guide seat;

the guide wheel is in running fit with the suspension mechanism, and the rotating shaft of the guide wheel is parallel to the pivoting shaft of the suspension mechanism.

As the preferable technical scheme of the crawler chassis guiding device, the suspension mechanism comprises a bracket and a thrust wheel assembly, wherein the bracket is pivoted with the guiding seat, and the thrust wheel assembly is arranged on the bracket.

The track wheel assembly comprises a swinging frame and two track wheels, wherein the swinging frame is pivoted with the bracket, and the two track wheels are respectively positioned at two ends of the pivoting position of the swinging frame and the bracket and are in running fit with the swinging frame;

the rotating shafts of the two thrust wheels, the pivot shaft of the swing frame and the rotating shaft of the guide wheel are parallel in pairs.

As the preferred technical scheme of crawler chassis guider, the swing frame includes first swing arm and second swing arm, first swing arm with the second swing arm interval just respectively the pin joint in the support, two the thrust wheel all is located first swing arm with between the second swing arm, and every the pivot of thrust wheel respectively with first swing arm with second swing arm normal running fit.

As crawler chassis guider's preferred technical scheme, the swing frame still includes first swing pin and second swing pin, first swing pin wears to locate first swing arm just the both ends of first swing pin respectively with the support rigid coupling, the second swing pin wears to locate the second swing arm just the both ends of second swing pin respectively with the support rigid coupling, first swing arm and second swing arm respectively with corresponding first swing pin with second swing pin normal running fit.

As a preferable technical scheme of the crawler chassis guiding device, a first fixing part and a second fixing part are convexly arranged at intervals of the bracket, the first swing arm is positioned between the first fixing part and the second fixing part, and two ends of the first swing pin penetrating through the first swing arm are fixedly connected with the first fixing part and the second fixing part respectively;

the support interval is convexly provided with a third fixing part and a fourth fixing part, the second swing arm is positioned between the third fixing part and the fourth fixing part, and two ends of the second swing pin penetrating through the second swing arm are fixedly connected with the third fixing part and the fourth fixing part respectively.

As a preferable technical scheme of the crawler chassis guide device, the first fixing part is provided with a first mounting hole, one end of the first swinging pin is in interference fit with the first mounting hole, the fourth fixing part is provided with a second mounting hole, and one end of the second swinging pin is in interference fit with the second mounting hole;

the swing frame further comprises a first end cover and a second end cover, wherein the first end cover seals the first mounting hole, and the second end cover seals the second mounting hole.

As the preferred technical scheme of crawler chassis guider, hang the mechanism still include spacing subassembly, spacing subassembly including two set up in stopper on the support, two the stopper interval set up in the both sides of thrust wheel subassembly.

As the preferable technical scheme of crawler chassis guider, crawler chassis guider still includes shock-absorbing structure, hang the mechanism with one side of guide holder pin joint position with the guide wheel rotates the cooperation, hang the mechanism with the opposite side of guide holder pin joint position and with the position of guide holder butt is provided with shock-absorbing structure.

In another aspect, the present disclosure provides a construction machine, including a crawler belt chassis guide in any one of the above aspects.

The beneficial effects of the invention are as follows:

the invention provides a crawler chassis guiding device and engineering machinery, wherein the crawler chassis guiding device comprises a guide seat, a suspension mechanism and a guide wheel, and the suspension mechanism is pivoted with the guide seat; the guide wheel is in rotary fit with the suspension mechanism, and the rotating shaft of the guide wheel is parallel to the pivoting shaft of the suspension mechanism. When the construction machine equipped with the crawler chassis guide device runs on a rugged road, the guide wheel can swing around the pivot shaft due to the pivot of the suspension mechanism and the guide seat, so that the approach angle is changed. Therefore, when broken stone or steep slope road surfaces appear on the front road of the engineering machinery, the guide wheels can change the approach angle according to the actual road conditions, and the trafficability of the engineering machinery in different road conditions is further improved.

Drawings

FIG. 1 is a schematic view of a crawler chassis walking part in an embodiment of the present invention;

FIG. 2 is a schematic view of a prior art track pan guide and tensioner configuration;

FIG. 3 is a schematic view of the structure of the guide and tensioner of the crawler chassis according to the embodiment of the present invention;

FIG. 4 is a schematic view of a guiding device of a crawler chassis according to an embodiment of the present invention;

FIG. 5 is a second schematic structural view of a guiding device of the crawler chassis according to the embodiment of the present invention;

FIG. 6 is a schematic diagram III of a guide device of a crawler chassis according to an embodiment of the present invention;

FIG. 7 is an exploded view of a track chassis guide in accordance with an embodiment of the present invention;

FIG. 8 is a second schematic explosion view of a guide device for a crawler chassis according to an embodiment of the present invention;

FIG. 9 is a schematic view of a suspension mechanism of a guide device according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a guide holder of a guide device according to an embodiment of the present invention.

In the figure:

100. a track; 200. a bogie frame;

300. a guide device; 301. a guide wheel bracket; 302. a guide wheel;

400. a tensioning device; 500. a driving device; 600. a thrust wheel device; 700. a riding wheel device;

1. a guide seat; 11. a guide protrusion;

2. a suspension mechanism; 21. a bracket; 211. a first fixing portion; 2111. a first mounting hole; 212. a second fixing portion; 213. a third fixing portion; 214. a fourth fixing portion; 2141. a second mounting hole;

2211. a first swing arm; 2212. a second swing arm; 2213. a first swing pin; 2214. a second swing pin; 2215. a first end cap; 2216. a second end cap; 222. a thrust wheel;

23. a limiting block;

4. a shock absorbing structure; 41. a first elastic member; 42. and a second elastic member.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

As shown in fig. 1, the traveling part of the crawler chassis includes a crawler 100, a bogie frame 200, a guide 300, a tensioning device 400 (shown in fig. 3), a driving device 500, a roller device 600, and a riding wheel device 700, wherein the tensioning device 400 is fixed to the bogie frame 200, the guide 300 is located at one end of the bogie frame 200, and the tensioning device 400 can drive the guide 300 to move. The driving device 500 is located at the other end of the bogie frame 200. The thrust wheel assembly 600 is located below the bogie frame 200. The riding wheel device 700 is disposed above the bogie frame 200. The crawler belt 100 is wound around the guide 300, the driving device 500, the roller device 600 and the riding wheel device 700. The driving device 500 drives the crawler 100 to move, and the tensioning device 400 drives the guiding device 300 to move, so that the crawler 100 is in a tensioned state. The function of the riding wheel device 700 is to drag the crawler belt 100, prevent the crawler belt 100 from sagging too much, reduce the jounce phenomenon of the crawler belt 100 in motion, and prevent the crawler belt 100 from sliding sideways. The guide 300 is used to guide the track 100 to rotate correctly, so that the track 100 can be prevented from being deviated and derailed, and the guide 300 is generally disposed in the advancing direction of the construction machine. The main function of the thrust wheel arrangement 600 is to support the weight of the work machine.

As shown in fig. 2, at present, the guiding device 300 generally comprises a guiding wheel bracket 301 and a guiding wheel 302, the guiding wheel 302 is in rotating fit with the guiding wheel bracket 301, and the tensioning device 400 drives the guiding wheel bracket 301 to move, so that the crawler 100 is tensioned. The engineering machinery provided with the guide device 300 cannot swing in the advancing process, so that the approach angle of the guide wheel 302 is a fixed value, so that the climbing and passing performance of the crawler chassis are limited, particularly on broken stone and steep road surfaces, the front guide wheel of the crawler chassis is huge in impact and destructive power, the passing performance is limited, the road surface with a larger gradient cannot be passed, the vehicle body jolt is easily caused when the road surface passes through a rugged road surface, the influence on the structural strength and riding comfort of the crawler chassis is larger, and the requirements of traction and transportation work of crawler construction equipment under complex working conditions cannot be met.

The guide device 300 slides along a preset direction under the action of the tensioning device 400, specifically, the tail end of the guide device 300 is rigidly connected with the tensioning device 400, and when the telescopic oil cylinder of the tensioning device 400 is filled with oil or discharged with oil, the guide device can move along with the tensioning device 400 in the preset direction, so that the tensioning degree of the crawler 100 is adjusted, and the crawler 100 is convenient to replace.

In order to solve the problem of limited trafficability of engineering machinery, as shown in fig. 3, the present embodiment provides a crawler chassis guiding device, where the crawler chassis guiding device includes a guiding seat 1, a suspension mechanism 2 and a guiding wheel 302, and the guiding seat 1 slides along a preset direction; the suspension mechanism 2 is pivoted with the guide seat 1; the guide wheel 302 is in rotary fit with the suspension mechanism 2, and the rotating shaft of the guide wheel 302 is parallel to the pivot shaft of the suspension mechanism 2. When the construction machine equipped with the crawler belt chassis guide travels on a rough road, since the suspension mechanism 2 is pivoted to the shoe 1, the guide wheel 302 can swing around the pivot shaft, thereby changing the approach angle. Therefore, when broken stone or steep slope road surface appears on the road in front of the engineering machinery, the guide wheel 302 can change the approach angle according to the actual road condition, so as to further improve the trafficability of the engineering machinery in different road conditions.

For the specific structure of the suspension mechanism 2, optionally, the suspension mechanism 2 includes a bracket 21 and a thrust wheel assembly, the bracket 21 is pivoted with the guide seat 1, and a plurality of thrust wheel assemblies are disposed on the bracket 21 at intervals along the preset direction of the guide seat 1. In this embodiment, the thrust wheel assembly is used to support the frame 21, the guide shoe 1 and the guide wheel 302 and counteract the downward force of the track 100 on the guide wheel 302. In this embodiment, the number of the thrust wheel assemblies is 1, and in other embodiments, the number of the thrust wheel assemblies may be 2, 3, 4, or the like.

For the specific structure of the thrust wheel assembly, as shown in fig. 4-9, optionally, the thrust wheel assembly includes a swing frame and two thrust wheels 222, the swing frame is pivoted with the bracket 21, and the two thrust wheels 222 are located at two ends of the pivot position of the swing frame and the bracket 21 and are respectively in running fit with the swing frame; the rotation axes of the two thrust wheels 222, the pivot axis of the swing frame, and the rotation axis of the guide wheel 302 are parallel to each other. The thrust wheel 222 is a load-bearing structure of the crawler chassis, and the conventional thrust wheel 222 is fixed on the bogie frame 200, and the thrust wheel 222 is suspended or stressed too much when passing over a rugged road, thereby affecting the service life and the stability of the vehicle body. In this embodiment, the swing frame is pivoted with the bracket 21, when the engineering machine runs on a rugged road, the swing frame adjusts its swing angle according to the shape of the ground, so as to improve the attachment area of the crawler 100 below the thrust wheel 222 and the ground, effectively reduce the ground specific pressure of the whole vehicle, improve the grip of the crawler 100, reduce the vibration impact of the chassis, thereby meeting the requirements of the complex working condition on the chassis trafficability, the vehicle body stability, the durability and the riding comfort of the crawler engineering machine, and simultaneously furthest reducing the difficulty of the processing technology, and having good economy and practicality.

For the specific structure of the swing frame, optionally, the swing frame includes a first swing arm 2211, a second swing arm 2212, a first swing pin 2213, a second swing pin 2214, a first end cover 2215 and a second end cover 2216, a first fixing portion 211 and a second fixing portion 212 are convexly arranged on the bracket 21 at intervals, the first swing arm 2211 is located between the first fixing portion 211 and the second fixing portion 212, the first swing pin 2213 sequentially penetrates through the first fixing portion 211, the first swing arm 2211 and the second fixing portion 212, and two ends of the first swing pin 2213 are in interference fit with the first fixing portion 211 and the second fixing portion 212 respectively, and the first swing arm 2211 and the first swing pin 2213 are in running fit; the bracket 21 is also convexly provided with a third fixing part 213 and a fourth fixing part 214, the second swing arm 2212 is positioned between the third fixing part 213 and the fourth fixing part 214, the second swing pin 2214 sequentially penetrates through the third fixing part 213, the second swing arm 2212 and the fourth fixing part 214, two ends of the second swing pin 2214 are respectively in interference fit with the third fixing part 213 and the fourth fixing part 214, and the second swing arm 2212 and the second swing pin 2214 are in running fit; at this time, the first swing arm 2211 and the second swing arm 2212 are parallel and spaced apart, the two thrust wheels 222 are located between the first swing arm 2211 and the second swing arm 2212, and the rotation shaft of each thrust wheel 222 is respectively in running fit with the first swing arm 2211 and the second swing arm 2212. Specifically, the axis of the first swing pin 2213 and the axis of the second swing pin 2214 are located on the same straight line. In this embodiment, when the construction machine runs on a rough road, since the two swing arms are respectively pivoted to the bracket 21, the two thrust wheels 222 can swing up and down along with the road, so as to ensure the degree of attachment to the road, improve the grip of the crawler belt 100, reduce the specific pressure for ground contact, and reduce the impact of the vehicle body and the damage of components.

Alternatively, the first fixing portion 211 is provided with a first mounting hole 2111, one end of the first swing pin 2213 is in interference fit with the first mounting hole 2111, the fourth fixing portion 214 is provided with a second mounting hole 2141, and one end of the second swing pin 2214 is in interference fit with the second mounting hole 2141; the swing frame further includes a first end cap 2215 and a second end cap 2216, the first end cap 2215 closing the first mounting hole 2111 and the second end cap 2216 closing the second mounting hole 2141. In this embodiment, taking the first swing pin 2213 as an example, the first swing pin 2213 includes a fixed shaft and a shaft sleeve sleeved on the fixed shaft, and the shaft sleeve is in running fit with the fixed shaft and in interference fit with the swing arm. The fixed shaft is internally provided with an oil way, one end of the fixed shaft, which is inserted into the first mounting hole 2111, is provided with a first oil inlet, lubricating oil can enter the oil way through the first oil inlet and then flow between the fixed shaft and the shaft sleeve, and as the engineering machinery mostly works in an environment with more dust and soil, the first oil inlet is blocked by dust or sand, so the first mounting hole 2111 is closed by adopting the first end cover 2215. The second swing pin 2214 is identical in structure to the first swing pin 2213, and the second end cap 2216 and the first end cap 2215 function identically.

Specifically, in the present embodiment, the first end cap 2215 and the second end cap 2216 are respectively fixed to the first fixing portion 211 and the second fixing portion 212 by screwing. In other embodiments, the first end cap 2215 and the second end cap 2216 may also be respectively fixed to the first fixing portion 211 and the second fixing portion 212 by a clamping manner.

Optionally, the suspension mechanism 2 further comprises a plurality of limiting assemblies, and the plurality of limiting assemblies and the plurality of thrust wheel assemblies are in one-to-one correspondence; the limiting assembly comprises two limiting blocks 23 arranged on the support 21, and the two limiting blocks 23 are arranged on two sides of the corresponding thrust wheel assembly at intervals. In this embodiment, the track 100 is formed by sequentially connecting a plurality of caterpillar units in series, wherein each caterpillar unit comprises a caterpillar link, and two adjacent caterpillar units are in pin joint through the caterpillar link, and the driving wheel, the guide wheel 302, the supporting wheel 222 and the riding wheel are in sliding fit with the caterpillar link. In order to prevent derailment of the crawler belt 100, two limiting blocks 23 are provided on the bracket 21, and the two limiting blocks 23 are located at both sides of the caterpillar link to limit the movement of the caterpillar link along the rotation axis direction of the thrust wheel 222, thereby preventing derailment of the crawler belt 100.

Optionally, the crawler chassis guiding device further includes a shock absorbing structure 4, one side of the pivot position of the bracket 21 and the guide seat 1 is in running fit with the guide wheel 302, and the shock absorbing structure 4 is disposed at the position of the other side of the pivot position of the bracket 21 and the guide seat 1 and abutting against the guide seat 1. In this embodiment, when the engineering machine is running, due to the difference of road surface environments, the guide wheel 302 swings along with it, so that the support 21 swings relative to the guide seat 1, the shock absorbing structure 4 is disposed at the other side of the pivot position of the support 21 and the guide seat 1 and at the position abutting against the guide seat 1, and the shock absorbing structure 4 can play a role in buffering, so as to reduce the shock of the impact between the guide seat 1 and the support 21, and play a limiting role on the support 21. Specifically, the shock absorbing structure 4 includes a first elastic member 41 and a second elastic member 42, each of the first elastic member 41 and the second elastic member 42 is made of a material capable of undergoing elastic deformation, the first elastic member 41 is disposed on the support 21, the second elastic member 42 is disposed on the guide holder 1, when the guide holder 1 abuts against the support 21, the first elastic member 41 and the second elastic member 42 abut against each other and undergo elastic deformation, and specifically, the first elastic member 41 and the second elastic member 42 are made of a rubber material.

As shown in fig. 10, the guide holder 1 is optionally provided with guide protrusions 11. In this embodiment, the tensioning device 400 is inserted into the guide projection 11. This arrangement is advantageous for improving the stability of the fastening of the tensioning device 400 to the guide shoe 1.

The embodiment also provides engineering machinery, which comprises the crawler chassis guiding device in the scheme.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. A crawler chassis guide, the guide (300) being located at one end of a trolley (200) and a tensioning device (400) being operable to drive the guide (300) in motion, comprising:

the guide seat (1), the guide seat (1) is connected to the tensioning device (400), and the guide seat (1) can slide along a preset direction under the action of the tensioning device (400);

the suspension mechanism (2) is pivoted with the guide seat (1);

the guide wheel (302), the guide wheel (302) with hang mechanism (2) normal running fit, the pivot of guide wheel (302) with hang the pin joint axle of mechanism (2) parallel.

2. The crawler chassis guide device according to claim 1, wherein the suspension mechanism (2) comprises a bracket (21) and a thrust wheel assembly, the bracket (21) is pivoted with the guide holder (1), and the thrust wheel assembly is arranged on the bracket (21).

3. The crawler chassis guide device according to claim 2, wherein the thrust wheel assembly comprises a swing frame and two thrust wheels (222), the swing frame is pivoted with the bracket (21), and the two thrust wheels (222) are respectively positioned at two ends of the pivot position of the swing frame and the bracket (21) and are in running fit with the swing frame;

the rotating shafts of the two supporting wheels (222), the pivot shaft of the swinging frame and the rotating shaft of the guide wheel (302) are parallel in pairs.

4. A crawler chassis guide as in claim 3 wherein the swing frame comprises a first swing arm (2211) and a second swing arm (2212), the first swing arm (2211) and the second swing arm (2212) are spaced apart and pivotally connected to the bracket (21) respectively, two of the thrust wheels (222) are located between the first swing arm (2211) and the second swing arm (2212), and the rotation axis of each of the thrust wheels (222) is in rotational engagement with the first swing arm (2211) and the second swing arm (2212) respectively.

5. The crawler chassis guide device according to claim 4, wherein the swing frame further comprises a first swing pin (2213) and a second swing pin (2214), the first swing pin (2213) is penetrating through the first swing arm (2211) and two ends of the first swing pin (2213) are fixedly connected with the bracket (21) respectively, the second swing pin (2214) is penetrating through the second swing arm (2212) and two ends of the second swing pin (2214) are fixedly connected with the bracket (21) respectively, and the first swing arm (2211) and the second swing arm (2212) are in running fit with the corresponding first swing pin (2213) and second swing pin (2214) respectively.

6. The crawler chassis guide device according to claim 5, wherein the bracket (21) is provided with a first fixing portion (211) and a second fixing portion (212) at intervals, the first swing arm (2211) is located between the first fixing portion (211) and the second fixing portion (212), and two ends of the first swing pin (2213) penetrating the first swing arm (2211) are fixedly connected with the first fixing portion (211) and the second fixing portion (212), respectively;

the support (21) is provided with a third fixing part (213) and a fourth fixing part (214) in a protruding mode at intervals, the second swing arm (2212) is located between the third fixing part (213) and the fourth fixing part (214), and two ends of the second swing pin (2214) penetrating through the second swing arm (2212) are fixedly connected with the third fixing part (213) and the fourth fixing part (214) respectively.

7. The crawler belt chassis guide as in claim 6 wherein said first fixing portion (211) is provided with a first mounting hole (2111), one end of said first swing pin (2213) is interference fit with said first mounting hole (2111), said fourth fixing portion (214) is provided with a second mounting hole (2141), one end of said second swing pin (2214) is interference fit with said second mounting hole (2141);

the swing frame further includes a first end cap (2215) and a second end cap (2216), the first end cap (2215) closing the first mounting hole (2111), and the second end cap (2216) closing the second mounting hole (2141).

8. A crawler chassis guide according to claim 3, wherein the suspension mechanism (2) further comprises a limiting assembly comprising two limiting blocks (23) arranged on the support (21), the two limiting blocks (23) being arranged at intervals on both sides of the thrust wheel assembly.

9. The crawler chassis guide device according to claim 1, further comprising a shock absorbing structure (4), wherein one side of the pivot position of the suspension mechanism (2) and the guide holder (1) is in running fit with the guide wheel (302), and the shock absorbing structure (4) is arranged at the position of the other side of the pivot position of the suspension mechanism (2) and the guide holder (1) and abutting against the guide holder (1).

10. A construction machine comprising a crawler belt chassis guide as claimed in any one of claims 1 to 9.