Crawler walking mechanism and working machine

Abstract

The utility model relates to the technical field of operation machinery, and discloses a crawler walking mechanism and operation machinery. The crawler walking mechanism comprises a crawler chassis; the track frames are arranged on the two opposite sides of the track chassis, first connecting shafts are arranged between the track frames and the track chassis, the first ends of the first connecting shafts are rotationally connected with the track frames, and the second ends of the first connecting shafts are fixedly connected with the track chassis through first positioning blocks; the balance beam is arranged between the pair of crawler frames, second connecting shafts are arranged at the two ends of the balance beam respectively, the first ends of the second connecting shafts are in spherical hinge connection with the crawler frames, and the second ends of the second connecting shafts are fixedly connected with the crawler chassis; the third connecting shaft is arranged between the balance beam and the crawler chassis, the first end of the third connecting shaft is fixedly connected with the crawler chassis, and the second end of the third connecting shaft is rotationally connected with the balance beam. According to the crawler walking mechanism, each group of supporting wheels on the crawler frame can keep equal vertical load, and the maximum wheel pressure value is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of operating machinery, in particular to a crawler walking mechanism and an operating machinery. Background Art

[0002] Since the crawler frame and crawler chassis of crawler operating machinery are usually rigidly connected, when the crawler traveling mechanism travels on harsh road conditions (such as uneven ground), the center of gravity of the crawler chassis is not always in the middle of the two crawler frames, so the load on the crawler chassis cannot be evenly distributed to the crawler frames on both sides, which will lead to an increase in the maximum wheel pressure value on the support wheel and uneven wheel pressure distribution. Utility Model Content

[0003] In view of this, the utility model provides a crawler traveling mechanism and an operating machine to solve the problem that the wheel pressure distribution difference in the crawler traveling mechanism is large and the maximum wheel pressure is too large when passing through bad road conditions.

[0004] In a first aspect, the utility model provides a crawler walking mechanism, comprising:

[0005] Track chassis;

[0006] A pair of crawler frames are arranged on opposite sides of the crawler chassis, a first connecting shaft is arranged between the crawler frame and the crawler chassis, a first end of the first connecting shaft is rotatably connected to the crawler frame, and a second end of the first connecting shaft is fixedly connected to the crawler chassis via a first positioning block;

[0007] A balance beam is arranged between the pair of crawler frames, and two ends of the balance beam are respectively provided with a second connecting shaft, a first end of the second connecting shaft is connected to the crawler frame by a ball joint, and a second end of the second connecting shaft is fixedly connected to the crawler chassis;

[0008] The third connecting shaft is arranged between the balance beam and the crawler chassis, the first end of the third connecting shaft is fixedly connected to the crawler chassis, and the second end of the third connecting shaft is rotatably connected to the balance beam.

[0009] Beneficial effect: The crawler frame in the utility model is rotatably connected to the crawler chassis, the balance beam is rotatably connected to the crawler chassis, and the balance beam is hingedly connected to the two crawler frames, which can limit the center of gravity deviation range of the crawler walking mechanism when passing through severe road conditions to the greatest extent. In this way, the uniformity of wheel pressure distribution can be guaranteed to the greatest extent, the stress amplitude of the crawler frame and related wheel frames can be reduced, the fatigue life of the structure and shaft system components can be greatly improved, and the degree of damage to the ground by the crawler walking mechanism can be reduced.

[0010] In an optional embodiment, the crawler chassis is provided with a pair of mounting parts, the mounting parts are provided with a first through hole, the second end of the first connecting shaft passes through the first through hole, one end of the first positioning block is arranged on the second end of the first connecting shaft, and the other end of the first positioning block is fixedly connected to the mounting part.

[0011] Beneficial effects: By providing a mounting portion on the crawler chassis and providing a first through hole on the mounting portion, the first connecting shaft and the crawler chassis are easily installed and positioned, and the installation process is simplified. Furthermore, one end of the first positioning block is provided on the second end of the first connecting shaft and is fixedly connected to the mounting portion, the structure is simple, and the circumferential fixation and axial fixation of the first connecting shaft can be achieved, thereby achieving a stable connection between the first connecting shaft and the crawler chassis, and improving the overall stability and reliability of the walking mechanism.

[0012] In an optional embodiment, a groove matching with the first positioning block is provided on the side wall of the second end of the first connecting shaft.

[0013] Beneficial effect: By setting a groove that matches the first positioning block on the side wall of the second end of the first connecting shaft, on the one hand, the first positioning block can be more easily and accurately installed on the first connecting shaft, simplifying the installation process and saving the time consumed in installation; on the other hand, the mutual cooperation between the first positioning block and the first connecting shaft can be enhanced, and the connection stability and reliability between the two can be improved.

[0014] In an optional embodiment, there are multiple first positioning blocks, and the multiple first positioning blocks are arranged at intervals along the circumference of the first connecting shaft.

[0015] Beneficial effect: By arranging multiple first positioning blocks at intervals on the circumference of the first connecting shaft, on the one hand, the load can be evenly distributed to each positioning block to avoid a single positioning block from bearing too much load; on the other hand, the contact area between the first connecting shaft and the mounting part can be increased, thereby improving the stability and reliability of the structure.

[0016] In an optional embodiment, a plurality of the first positioning blocks are integrally formed.

[0017] Beneficial effects: Compared with separately manufactured positioning blocks, the integrally formed positioning blocks have better structural strength, thus improving the stability and reliability of the structure. In addition, the integrally formed positioning blocks have a simpler manufacturing process, thus reducing production costs and shortening production cycles.

[0018] In an optional embodiment, one end of the first positioning block is overlapped on a side of the mounting portion away from the track frame, and is connected to the mounting portion via a fastener.

[0019] Beneficial effect: By overlapping one end of a positioning block on the side of the mounting portion away from the track frame, the axial direction of the first connecting shaft can be limited, preventing the first connecting shaft from moving in the direction of the track frame. Furthermore, by fixing the first positioning block to the mounting portion by fasteners, the circumferential direction of the first connecting shaft can be limited, preventing it from rotating or shaking during the connection process, thereby ensuring the stability and reliability of the connection. In addition, by using fasteners, the first positioning block can be detachably connected to the mounting portion, thereby improving the portability of subsequent maintenance.

[0020] In an optional embodiment, a second through hole is provided on the track frame, the first end of the first connecting shaft passes through the second through hole, a second positioning block is provided on the first end of the first connecting shaft, and the second positioning block is overlapped on the side of the track frame away from the crawler chassis.

[0021] Beneficial effect: By setting the second through hole on the crawler frame, the installation and positioning of the first connecting shaft and the crawler frame are facilitated, and the installation process is simplified. Furthermore, one end of the second positioning block is set on the first end of the first connecting shaft, and the second positioning block is overlapped on the side of the crawler frame away from the crawler chassis. On the one hand, the axial direction of the first connecting shaft can be limited to prevent the first connecting shaft from moving in the direction of the crawler chassis; on the other hand, dust can be prevented from entering the gap between the first connecting shaft and the second through hole, ensuring the smoothness of the rotation of the first connecting shaft and the crawler frame.

[0022] In an optional embodiment, the track frame is further provided with a third through hole, in which an axial sleeve and a spherical bearing are installed, the axial sleeve is sleeved outside the spherical bearing, and the second connecting shaft is passed through the inner ring of the spherical bearing.

[0023] Beneficial effect: By arranging an axial sliding sleeve and a spherical bearing in the third through hole, not only can the track frame rotate along the three directions of the second connecting shaft, but the second connecting shaft can also move axially. In this way, the track frame can better adapt to different road inclination conditions while avoiding damage to the connecting structure.

[0024] In an optional embodiment, the second connecting shaft is fixedly connected to the balance beam via a third positioning block, and the third connecting shaft is fixedly connected to the crawler chassis via a fourth positioning block.

[0025] Beneficial effects: The second connecting shaft is fixedly connected to the balance beam through the third positioning block, which can achieve circumferential positioning and axial positioning of the second connecting shaft, preventing the second connecting shaft from shifting or rotating during the movement of the operating machinery; the third connecting shaft is fixedly connected to the crawler chassis through the fourth positioning block, which can achieve circumferential positioning and axial positioning of the third connecting shaft, preventing the third connecting shaft from shifting or rotating during the movement of the operating machinery.

[0026] In a second aspect, the utility model further provides an operating machine, comprising: the above-mentioned crawler walking mechanism.

[0027] Beneficial effect: By using the above crawler travel mechanism, each set of support wheels on the crawler frame can maintain an equal vertical load and reduce the maximum wheel pressure value. At the same time, it also avoids the possibility of damage to individual support wheels due to a sharp increase in wheel pressure caused by uneven ground, thereby improving the reliability of the entire crawler. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 The present invention is a schematic structural diagram of a crawler walking mechanism according to an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. crawler chassis; 101. mounting portion; 2. crawler frame; 3. first connecting shaft; 301. first positioning block; 302. second positioning block; 4. balance beam; 5. second connecting shaft; 501. third positioning block; 6. third connecting shaft; 601. fourth positioning block; 7. spherical bearing. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] Aiming at the problem that the wheel pressure distribution difference in a crawler traveling mechanism is large and the maximum wheel pressure is too large when passing through bad road conditions, the utility model provides a crawler traveling mechanism and an operating machine.

[0034] Combine the following Figure 1 , describing an embodiment of the utility model.

[0035] According to an embodiment of the present utility model, on the one hand, as Figure 1 As shown, a crawler walking mechanism is provided, including: a crawler chassis 1, a pair of crawler frames 2, a balance beam 4 and a third connecting shaft 6.

[0036] Specifically, a pair of track frames 2 are arranged on opposite sides of the track chassis 1, and a first connecting shaft 3 is provided between the track frames 2 and the track chassis 1, a first end of the first connecting shaft 3 is rotatably connected to the track frame 2, and a second end of the first connecting shaft 3 is fixedly connected to the track chassis 1 through a first positioning block 301; a balance beam 4 is arranged between the pair of track frames 2, and second connecting shafts 5 are respectively provided at both ends of the balance beam 4, a first end of the second connecting shaft 5 is ball-jointed to the track frame 2, and a second end of the second connecting shaft 5 is fixedly connected to the track chassis 1; a third connecting shaft 6 is arranged between the balance beam 4 and the track chassis 1, a first end of the third connecting shaft 6 is fixedly connected to the track chassis 1, and a second end of the third connecting shaft 6 is rotatably connected to the balance beam 4.

[0037] The crawler frame 2 in the embodiment of the utility model is rotatably connected to the crawler chassis 1, the balance beam 4 is rotatably connected to the crawler chassis 1, and the balance beam 4 is hingedly connected to the two crawler frames 1, which can limit the center of gravity deviation range of the crawler walking mechanism when passing through severe road conditions to the greatest extent. In this way, the uniformity of wheel pressure distribution can be guaranteed to the greatest extent, the stress amplitude of the crawler frame 1 and related wheel frames can be reduced, the fatigue life of the structure and shaft system components can be greatly improved, and the degree of damage to the ground by the crawler walking mechanism can be reduced.

[0038] It should be noted that the first connecting shaft 3 and the crawler frame 2 can be rotatably connected via a slewing bearing or a shaft sleeve. In a specific embodiment, a slewing bearing is provided in the second through hole. The outer ring of the slewing bearing is fixedly connected to the second through hole, and the first connecting shaft 3 is passed through the inner ring of the slewing bearing and fixedly connected to the inner ring of the slewing bearing.

[0039] According to an embodiment of the utility model, the crawler chassis 1 is provided with a pair of mounting parts 101, the mounting parts 101 are provided with a first through hole, the second end of the first connecting shaft 3 passes through the first through hole, one end of the first positioning block 301 is arranged on the second end of the first connecting shaft 3, and the other end of the first positioning block 301 is fixedly connected to the mounting part 101. By arranging the mounting part 101 on the crawler chassis 1 and providing the first through hole on the mounting part 101, the installation and positioning of the first connecting shaft 3 and the crawler chassis 1 are facilitated, and the installation process is simplified. Furthermore, one end of the first positioning block 301 is arranged on the second end of the first connecting shaft 3 and is fixedly connected to the mounting part 101, the structure is simple, and the circumferential fixation and axial fixation of the first connecting shaft 3 can be achieved, so that the first connecting shaft 3 can be firmly connected to the crawler chassis 1, and the overall stability and reliability of the walking mechanism can be improved.

[0040] According to an embodiment of the utility model, a groove matching with the first positioning block 301 is provided on the side wall of the second end of the first connecting shaft 3. By providing a groove matching with the first positioning block 301 on the side wall of the second end of the first connecting shaft, on the one hand, the first positioning block 301 can be more easily and accurately installed on the first connecting shaft 3, simplifying the installation process and saving the time consumed by the installation; on the other hand, the mutual cooperation between the first positioning block 301 and the first connecting shaft 3 can be enhanced, and the connection stability and reliability between the two can be improved.

[0041] According to an embodiment of the utility model, there are multiple first positioning blocks 301, and the multiple first positioning blocks 301 are arranged at intervals along the circumference of the first connecting shaft 3. By arranging multiple first positioning blocks 301 at intervals along the circumference of the first connecting shaft 3, on the one hand, the load can be evenly distributed to each positioning block to avoid a single positioning block from bearing too much load; on the other hand, the contact area between the first connecting shaft 3 and the mounting portion 101 can be increased, thereby improving the stability and reliability of the structure.

[0042] According to an embodiment of the utility model, the plurality of first positioning blocks 301 are integrally formed. Compared with the positioning blocks manufactured separately, the integrally formed positioning blocks have better structural strength, thus improving the stability and reliability of the structure. In addition, the manufacturing process of the integrally formed positioning blocks is simpler, thus reducing the production cost and shortening the production cycle.

[0043] According to an embodiment of the utility model, one end of the first positioning block 301 is overlapped on the side of the mounting portion 101 away from the track frame 2, and is connected to the mounting portion 101 through a fastener. By overlapping one end of a positioning block on the side of the mounting portion 101 away from the track frame 2, the axial direction of the first connecting shaft 3 can be limited to prevent the first connecting shaft 3 from moving in the direction of the track frame 2. Furthermore, by fixing the first positioning block 301 to the mounting portion 101 through fasteners, the circumferential direction of the first connecting shaft 3 can be limited to prevent it from rotating or shaking during the connection process, thereby ensuring the stability and reliability of the connection. In addition, by using fasteners, a detachable connection between the first positioning block 301 and the mounting portion 101 can be achieved, thereby improving the portability of subsequent maintenance.

[0044] According to an embodiment of the utility model, a second through hole is provided on the crawler frame 2, the first end of the first connecting shaft 3 passes through the second through hole, a second positioning block 302 is provided on the first end of the first connecting shaft 3, and the second positioning block 302 is overlapped on the side of the crawler frame 2 away from the crawler chassis 1. By providing the second through hole on the crawler frame 2, the installation and positioning of the first connecting shaft 3 and the crawler frame 2 are facilitated, and the installation process is simplified. Further, one end of the second positioning block 302 is provided on the first end of the first connecting shaft 3, and the second positioning block 302 is overlapped on the side of the crawler frame 2 away from the crawler chassis 1, on the one hand, the axial direction of the first connecting shaft 3 can be limited to prevent the first connecting shaft 3 from moving toward the direction of the crawler chassis 1; on the other hand, dust can be prevented from entering the gap between the first connecting shaft 3 and the second through hole, ensuring the smoothness of the rotation of the first connecting shaft 3 and the crawler frame 2.

[0045] It should be noted that there may be a plurality of second positioning blocks 302, and the plurality of second positioning blocks 302 may be arranged at intervals on the side wall of the first connecting shaft 3. In addition, the plurality of second positioning blocks 302 may be manufactured by an integrated molding process.

[0046] According to an embodiment of the utility model, the crawler frame 2 is further provided with a third through hole, in which an axial sleeve and a spherical bearing 7 are installed, the axial sleeve is sleeved outside the spherical bearing 7, and a second connecting shaft 5 is penetrated in the inner ring of the spherical bearing 7. By arranging the axial sleeve and the spherical bearing 7 in the third through hole, not only can the crawler frame 2 be rotated in three directions along the second connecting shaft 5, but also the second connecting shaft 5 can be moved in the axial direction, so that the crawler frame 2 can better adapt to different road inclination conditions while avoiding damage to the connection structure.

[0047] According to an embodiment of the utility model, the second connecting shaft 5 is fixedly connected to the balance beam 4 through the third positioning block 501, and the third connecting shaft 6 is fixedly connected to the track chassis 1 through the fourth positioning block 601. By fixing the second connecting shaft 5 to the balance beam 4 through the third positioning block 501, the circumferential positioning and axial positioning of the second connecting shaft 5 can be achieved, preventing the second connecting shaft 5 from being offset or rotated during the travel of the operating machine; by fixing the third connecting shaft 6 to the track chassis 1 through the fourth positioning block 601, the circumferential positioning and axial positioning of the third connecting shaft 6 can be achieved, preventing the third connecting shaft 6 from being offset or rotated during the travel of the operating machine. It should be noted that the number of the third positioning block 501 and the fourth positioning block 601 can be multiple.

[0048] According to an embodiment of the utility model, on the other hand, a working machine is provided, comprising: the above-mentioned crawler traveling mechanism. By using the above-mentioned crawler traveling mechanism, each set of supporting wheels on the crawler frame 2 can maintain an equal vertical load and reduce the maximum wheel pressure value. At the same time, it also avoids the possibility of individual supporting wheels being damaged due to a sharp increase in wheel pressure caused by uneven ground, thereby improving the reliability of the entire crawler.

[0049] It should be noted that the operating machine in this embodiment may be, but is not limited to, an excavator, a bulldozer, a crane and other operating machines.

[0050] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A crawler walking mechanism, characterized in that: include: Track chassis (1); A pair of crawler frames (2) are arranged on opposite sides of the crawler chassis (1); a first connecting shaft (3) is provided between the crawler frame (2) and the crawler chassis (1); a first end of the first connecting shaft (3) is rotatably connected to the crawler frame (2); and a second end of the first connecting shaft (3) is fixedly connected to the crawler chassis (1) via a first positioning block (301); A balance beam (4) is arranged between the pair of crawler frames (2), and second connecting shafts (5) are respectively arranged at both ends of the balance beam (4), a first end of the second connecting shaft (5) is ball-jointedly connected to the crawler frame (2), and a second end of the second connecting shaft (5) is fixedly connected to the crawler chassis (1); A third connecting shaft (6) is arranged between the balance beam (4) and the crawler chassis (1); a first end of the third connecting shaft (6) is fixedly connected to the crawler chassis (1), and a second end of the third connecting shaft (6) is rotatably connected to the balance beam (4).

2. The crawler walking mechanism according to claim 1, characterized in that: The crawler chassis (1) is provided with a pair of mounting parts (101), the mounting parts (101) are provided with a first through hole, the second end of the first connecting shaft (3) passes through the first through hole, one end of the first positioning block (301) is arranged on the second end of the first connecting shaft (3), and the other end of the first positioning block (301) is fixedly connected to the mounting part (101).

3. The crawler walking mechanism according to claim 2, characterized in that: A groove matching with the first positioning block (301) is provided on the side wall of the second end of the first connecting shaft (3).

4. The crawler walking mechanism according to claim 3, characterized in that: There are a plurality of first positioning blocks (301), and the plurality of first positioning blocks (301) are arranged at intervals along the circumference of the first connecting shaft (3).

5. The crawler walking mechanism according to claim 4, characterized in that: The plurality of first positioning blocks (301) are integrally formed.

6. The crawler walking mechanism according to any one of claims 2 to 5, characterized in that: One end of the first positioning block (301) is overlapped on a side of the mounting portion (101) away from the crawler frame (2), and is connected to the mounting portion (101) via a fastener.

7. The crawler walking mechanism according to any one of claims 1 to 5, characterized in that: A second through hole is provided on the crawler frame (2), and the first end of the first connecting shaft (3) passes through the second through hole. A second positioning block (302) is provided on the first end of the first connecting shaft (3), and the second positioning block (302) is overlapped on a side of the crawler frame (2) away from the crawler chassis (1).

8. The crawler walking mechanism according to any one of claims 1 to 5, characterized in that: The crawler frame (2) is also provided with a third through hole, in which an axial sleeve and a spherical bearing (7) are installed, the axial sleeve is sleeved outside the spherical bearing (7), and the inner ring of the spherical bearing (7) is penetrated by the second connecting shaft (5).

9. The crawler walking mechanism according to any one of claims 1 to 5, characterized in that: The second connecting shaft (5) is fixedly connected to the balance beam (4) via a third positioning block (501), and the third connecting shaft (6) is fixedly connected to the crawler chassis (1) via a fourth positioning block (601).

10. A working machine, characterized in that: include: The crawler walking mechanism according to any one of claims 1 to 9.

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