Multi-configuration track support device, and use method, traveling mechanism and construction machine

Abstract

A multi-configuration track support device, and a use method, a traveling mechanism and a construction machine. The multi-configuration track support device comprises a support device I and a support device II, wherein the support device I comprises a support frame and two wear-resistant strips and is formed by assembling same into one piece by means of bolts and washers. The two wear-resistant strips support two track surfaces of a track shoe, thereby appropriately achieving a supporting effect on a track, and enabling effective support after a track pin shaft is seriously abraded. The support device II is formed by welding a connecting plate and two mounting plates into one piece, and a carrier roller is mounted on the support device II to achieve the supporting effect on the track shoe. The position of a middle portion of the support device I is the same as that of a mounting hole of the connecting plate of the support device II, such that the two devices can be matched, and the multi-configuration track support device is realized. The track support device with two configurations can effectively achieve stable support at an initial stage of the track and a severely worn stage of the track, and is conveniently mounted and dismounted.

Description

Multi-configuration crawler support device and use method, walking mechanism, and engineering machinery Technical Field

[0001] The invention relates to a crawler support device with multiple configurations, in particular to a crawler support device with multiple configurations for a chassis system of a large mining excavator, and belongs to the field of engineering machinery. Background Art

[0002] The undercarriage assembly of a large mining excavator consists of guide wheels, supporting rollers, carrier sprockets, and drive wheels, collectively known as the "four wheels and one belt." The supporting rollers, located at the lower end of the longitudinal beam structure, carry and support the machine's weight, transferring it to the crawler tracks. The guide wheels guide the crawler tracks, preventing them from swerving or derailing. The carrier sprockets support the upper crawler tracks, preventing them from sagging. The drive wheels transmit power to the crawler tracks, which transfer the machine's weight and loads during operation and travel to the ground. A large mining excavator's motor drives the travel reducer, which in turn drives the drive wheels, enabling the machine to travel.

[0003] Traditional mining excavators have three carrier roller mounts welded to the top of the longitudinal beam. Depending on the available space, one carrier roller mount is welded to the front, rear, and center positions, and the carrier rollers are bolted to these mounts. The carrier rollers primarily support the upper track to prevent it from sagging excessively, potentially wearing out structural components or affecting the machine's travel. The mining excavator's travel mechanism consists of a series of track shoes assembled using pins. During travel, the entire track is tensioned using a tensioning device. During travel, the track and pins wear, causing the track to sag due to wear and loosening. Early in operation, the track can be gradually tightened by applying tensioning force to alleviate this loosening. As the machine operates longer, the track shoes wear more and the track becomes increasingly loose, making it difficult to maintain sufficient track tension using tensioning alone. In the traditional design process, faced with this situation, the crawler tracks are in a loose state and continue to move and perform actual excavation work. Such loose crawler tracks will bring huge walking resistance and friction, which will further increase the wear of the pin shaft and the track shoe. At the same time, the loose crawler tracks will wear against the structural parts, causing damage to the structural parts.

[0004] Based on the above background, it is necessary to innovatively design a multi-configuration support device. That is, in the early stage of equipment application, when the track wear is small, three support sprockets are used to support the track plate to prevent it from sagging. The middle support device is designed as an assembled installation structure. In the later stage, as the track plate is severely worn and droops significantly, the tensioning device is no longer sufficient to tension it. A fully supported support structure can be replaced to fully support the upper part of the track plate. The middle support sprocket device can be removed and replaced with this fully supported support structure, which can be fully matched and installed on the longitudinal beam structure to achieve complete assembly interchangeability. This fully supported support device can greatly reduce running friction resistance, reduce friction and wear, and facilitate the operation of the entire machine.

[0005] This invention innovatively designs a track support device with multiple configurations. It is a multi-configuration option that can flexibly adjust the support device with different configurations according to the working status of the entire machine to meet the working needs of the entire machine. It is highly practical and can better protect the overall working performance of the entire machine. Summary of the Invention

[0006] In response to the problems existing in the above-mentioned prior art, the present invention provides a multi-configuration crawler support device, which can efficiently and reliably realize the multi-configuration support of the crawler plates of large mining excavators, reliably realize the support of the crawler plates, and prevent abnormal walking of the entire machine and abnormal wear of structural parts due to wear and sagging of the crawler plates.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] In a first aspect, the present invention discloses a multi-configuration crawler support device, comprising:

[0009] Support device II is installed on the longitudinal beam structure, and carrier sprocket I is installed on support device II, and together with carrier sprocket II on both sides, it supports the initial track shoe;

[0010] Support device I is installed on the longitudinal beam structure after the support device II is removed, and is used to support the two track surfaces of the track shoe, and together with the carrier sprockets II on both sides, it can support the track shoe in the later stage of wear;

[0011] The middle part of the support device I has the same installation position as the support device I, which can realize the universal matching of the two support devices and switch according to different states of the track to achieve effective support, thereby forming a multi-configuration track support device.

[0012] In some embodiments, the support device II comprises:

[0013] A connecting plate is mounted on the longitudinal beam structure and has the same mounting components as the middle portion of the supporting device I. The mounting position of the connecting plate is substantially located in the middle of the supporting sprockets II on both sides;

[0014] A pair of mounting plates facing each other are fixed on both sides of the connecting plate. The center distance between the mounting holes of the two plates matches the mounting size of the carrier sprocket I. The carrier sprocket I is fixed on the two mounting plates.

[0015] In some embodiments, after the connecting plate and the mounting plate are fixed together, their heights are equal to the height of the drag sprocket seat on the longitudinal beam structure, and the height of the supporting sprocket I installed on the supporting device II is equal to the height of the supporting sprocket II installed on the drag wheel seat.

[0016] In some embodiments, the support device I comprises:

[0017] a support bracket, the bottom of which is mounted on the longitudinal beam structure;

[0018] A pair of wear-resistant strips are symmetrically arranged on both sides of the top surface of the support bracket for supporting the track surfaces on both sides of the track shoe. The overall height of the combination of the support bracket and the wear-resistant strips matches the height of the track shoe to ensure that it is at a horizontal surface.

[0019] In some embodiments, the wear-resistant strip is detachably mounted on the support bracket and can be replaced at any time according to the degree of wear.

[0020] In some embodiments, the wear-resistant strip is provided with a plurality of internally threaded blind holes on the side facing the support bracket, and the support bracket is provided with a plurality of through holes corresponding one to one with the internally threaded blind holes. Bolts are passed through the through holes and tightened in the internally threaded blind holes to fix the wear-resistant strip on the support bracket.

[0021] In some embodiments, the support bracket comprises:

[0022] An upper cover plate is used for assembling the wear-resistant strips, and both ends of the upper cover plate are close to the corresponding support sprocket II;

[0023] The three vertical ribs supported on the bottom surface of the upper cover plate are installed with the upper profile of the vertical ribs matching the profile of the upper cover plate. The middle vertical rib is installed at the center of the upper cover plate, and the two vertical ribs on both sides are arranged symmetrically with respect to the middle vertical rib;

[0024] A first fixed mounting plate for mounting on the longitudinal beam structure, fixed to the bottom of the middle vertical rib plate, and having the same mounting components as the support device II;

[0025] A pair of second fixing plates for being installed on the longitudinal beam structure are respectively fixed to the bottoms of the two vertical rib plates on both sides.

[0026] In some embodiments, the upper cover plate is bent twice to form a centrally symmetrical structure, with the upper end being a flat plate. A plurality of through holes are symmetrically opened on both side ends of the flat plate for installation with the upper wear-resistant strip; both sides of the upper cover plate are inclined downwards, for allowing the soil on the track shoe to slide to the ground along the inclined surface.

[0027] In some embodiments, the first fixed mounting plate and the second fixed mounting plate are coplanar, a plurality of mounting holes II are provided on the second fixed mounting plate, a plurality of mounting holes I are provided on the first fixed mounting plate, and the positions and sizes of the plurality of mounting holes I are equal to the positions and sizes of the mounting holes provided on the connecting plate of the support device II; a threaded hole coaxial with the mounting hole I and the mounting hole II is provided on the longitudinal beam structure, and the first and second fixed mounting plates are both fixed to the longitudinal beam structure by bolts.

[0028] In some embodiments, there are two symmetrically arranged connecting transverse ribs between the three vertical ribs; the connecting transverse ribs are right-angled and have a large arc transition, one of the right-angled sides is connected to the upper cover plate, the other right-angled side is connected to the vertical ribs, and the lower end is aligned with the lower end surface of the vertical ribs.

[0029] In some embodiments, there is a symmetrically arranged L-shaped transverse rib plate at each end of the outer sides of the three vertical rib plates, the horizontal portion of the L-shaped transverse rib plate is connected to the upper cover plate and aligned with the end of the upper cover plate, and the vertical portion of the L-shaped transverse rib plate is connected to the vertical rib plate and aligned with the lower end of the vertical rib plate.

[0030] In a second aspect, the present invention discloses a method for using the multi-configuration crawler support device described above:

[0031] In the early stage of engineering machinery application, the middle sprocket seat is designed as an assembled mounting seat. The connecting plate of the support device II is connected to the middle connection position of the longitudinal beam structure by bolts. The sprocket I is installed on the mounting plate of the support device II, and together with the sprockets II on both sides, the initial track shoe is supported.

[0032] As the track and the pin shaft gradually wear out, the track shoe will sag more and more. Two wear-resistant strips are assembled on the support frame to form support device I. Support device II is removed and the assembled support device I is installed on the longitudinal beam structure. Support device I is connected to the installation positions on both sides of the longitudinal beam structure through the fixed installation plates on both sides, and the middle fixed installation plate of support device I is connected to the middle installation position of the longitudinal beam structure. After the connection is completed, the two wear-resistant strips of support device I are just supported on the track surface of the track shoe, forming an effective support for the track.

[0033] In a third aspect, the present invention discloses a walking mechanism, comprising a longitudinal beam structure and a crawler track, wherein the above-mentioned multi-configuration crawler support device is installed between the longitudinal beam structure and the crawler track.

[0034] In a fourth aspect, the present invention discloses an engineering machine equipped with the above-mentioned multi-configuration crawler support device; or equipped with the above-mentioned walking mechanism.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present invention can quickly utilize a multi-configuration crawler support device, which is a multi-configuration selection. It can conveniently and effectively realize effective support of the crawler tracks in the early and late stages of the excavator, prevent abnormal walking of the entire machine and abnormal wear of structural parts due to wear and sagging of the crawler plates, is easy to install, and simply and reliably solves market application problems. It is a very applicable and efficient innovative design and is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, as part of this disclosure, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute undue limitations thereon. Obviously, the drawings described below are merely examples. Those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0038] In the attached figure:

[0039] FIG1 is a schematic structural diagram of a support frame of a support device I of the present invention;

[0040] FIG2 is a schematic diagram of the mounting structure of the support frame and the wear strip of the support device I of the present invention;

[0041] FIG3 is a schematic structural diagram of the support device I of the present invention;

[0042] FIG4 is a schematic structural diagram of the support device II of the present invention;

[0043] FIG5 is a schematic diagram of the installation position of the longitudinal beam structure of the present invention;

[0044] FIG6 is a schematic diagram showing the actual loading effect of the supporting device I of the present invention;

[0045] FIG7 is a second schematic diagram of the actual loading effect of the supporting device I of the present invention;

[0046] FIG8 is a schematic diagram showing the actual loading effect of the supporting device II of the present invention.

[0047] Figure ID:

[0048] Ⅰ-1, support frame; Ⅰ, support device; Ⅱ, support device;

[0049] 1. Upper cover plate; 2. Vertical rib plate; 3. Second fixed mounting plate; 4. First fixed mounting plate; 5. L-shaped transverse rib plate; 6. Wear strips; 7. Bolts; 8. Washers; 9. Connecting transverse rib plate;

[0050] 1-a, through hole; 3-a, mounting hole II, 4-a, mounting hole I;

[0051] Ⅰ-a, installation position on both sides; Ⅰ-b, installation position in the middle;

[0052] Ⅱ-1, mounting plate; Ⅱ-2, connecting plate;

[0053] L-1, longitudinal beam structure; L-2, carrier roller seat; K-1, carrier roller; K-2, track; a, bolt; b, washer; c, bolt; d, washer.

[0054] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0056] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0057] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0058] As shown in Figures 6, 7, and 8, a multi-configuration track support device includes a support device I and a support device II. Support device II is installed on the longitudinal beam structure L-1, and the middle carrier sprocket K-1 is installed on support device II. Together with the carrier sprockets K-1 on both sides, it supports the initial track shoe. Support device I is installed on the longitudinal beam structure L-1 after support device II is removed. It is used to support the two track surfaces of the track shoe and, together with the carrier sprockets K-1 on both sides, it supports the track shoe in the later stage of wear. The middle part of support device I has the same installation position as support device I, which can realize the universal matching of the two support devices and switch to achieve effective support according to the different states of the track K-2, thereby forming a multi-configuration track support device. The two configurations of track support devices can effectively achieve stable support for the track K-2 in the early stage and the later stage of wear, and are easy to install and disassemble.

[0059] As shown in Figures 2 and 4, the support device I is assembled integrally by the support frame I-1, two wear strips 6, bolts 7 and washers 8. The support device II is assembled integrally by two mounting plates II-1 and a connecting plate II-2.

[0060] The specific structure of the above-mentioned supporting device II is further explained below.

[0061] Continuing with reference to Figures 4 and 8, the connecting plate II-2 of the support device II is installed on the longitudinal beam structure L-1, and has the same mounting components as the middle part of the support device I. The installation position of the connecting plate II-2 is basically located in the middle of the supporting sprockets K-1 on both sides; a pair of opposing mounting plates II-1 are fixed on both sides of the connecting plate II-2, and the center distance between the mounting holes of the two matches the installation size of the supporting sprocket K-1, and the supporting sprocket K-1 is fixed on the two mounting plates II-1.

[0062] Further solution: After the connecting plate II-2 and the mounting plate II-1 are fixed together, the height of the two is equal to the height of the drag sprocket seat L-2 on the longitudinal beam structure L-1, and the height of the middle supporting sprocket K-1 installed on the support device II is equal to the height of the supporting sprocket K-1 on both sides installed on the drag roller seat L-2.

[0063] The specific structure of the above-mentioned supporting device I is further explained below.

[0064] As shown in Figures 2, 3, 6, and 7, support frame I-1 of support device I is integrally welded together by an upper cover plate 1, three vertical ribs 2, two L-shaped transverse ribs 5, a central connecting transverse rib 9, a second fixed mounting plate 3, and a first fixed mounting plate 4. The mounting position of the first fixed mounting plate 4 can be used to match the mounting position of connecting plate II-2 of support device II.

[0065] Support Unit I consists of two wear strips 6 made of a special wear-resistant material. They are symmetrically arranged on either side of Support Unit I-1 to support the track surface on both sides of the track teeth. Wear strips 6 are assembled on Support Unit I-1 and can be replaced at any time depending on the degree of wear.

[0066] The overall height of the combination of the support frame I-1 and the wear-resistant strip 6 matches the height of the track shoe to ensure that it is at a horizontal plane, which can ensure the effective supporting effect of the track shoe.

[0067] Further solution: As shown in Figures 1, 2 and 3, the upper cover plate 1 of the support frame Ⅰ-1 is bent twice to form a centrally symmetrical structure. The upper end is a flat plate, and six through holes 1-a are symmetrically opened on both side ends of the flat plate for installation with the upper wear-resistant strip 6; the upper cover plate 1 has downward inclined plates on both sides, so that when supporting the track plate conveniently, the soil on the track plate can slide to the ground along the inclined surface.

[0068] Further solution: As shown in Figures 1, 2 and 3, the wear-resistant strip 6 is provided with multiple internally threaded blind holes on the side facing the upper cover plate 1, and the upper cover plate 1 is provided with multiple through holes 1-a corresponding one to one with the internally threaded blind holes. The bolts 7 pass through the washers 8 and the through holes 1-a and are tightened in the internally threaded blind holes to fix the wear-resistant strip 6 on the upper cover plate 1.

[0069] Further solutions: As shown in Figures 1, 2, and 3, support bracket I-1 has three vertical ribs 2, supported on the bottom surface of the upper cover 1. Each vertical rib 2 is bilaterally symmetrical, with the upper profile of each rib matching the upper profile of the upper cover 1. The center vertical rib 2 is installed at the center of the upper cover 1, with the two vertical ribs 2 on either side symmetrically arranged relative to the center vertical rib 1. The vertical ribs 1 are shaped like a garment, with the lower "body" connected to the second fixed mounting plate 3 and the first fixed mounting plate 4 on the lower side.

[0070] Further solution: As shown in Figures 1, 2, and 3, the second fixing plate 3 is designed to be coplanar with the first fixing plate 4, with two second fixing plates 3 symmetrically arranged on either side of the first fixing plate 4. The second fixing plate 3 has four mounting holes II3-a arranged in a centrally symmetrical arrangement; the first fixing plate 4 has ten mounting holes I4-a arranged in a bilaterally symmetrical arrangement. The location and size of the mounting holes on the first fixing plate 4 are identical to those on the connecting plate II-2 of the support device II.

[0071] As shown in Figure 5, the support device I is fixedly connected to the longitudinal beam structure L-1 through three connection positions; the longitudinal beam structure L-1 is provided with threaded holes at the mounting positions Ia on both sides and the middle mounting position Ib, and the support device I is fixedly connected to the threaded holes at the mounting positions Ia on both sides and the middle mounting position Ib by bolts and washers.

[0072] Further solution: As shown in Figures 1, 2, and 3, there are two symmetrically arranged connecting transverse ribs 9 between the three vertical ribs 2. The connecting transverse ribs 9 are right-angled and have a large arc transition, which effectively relieves stress. One of the right-angled sides is connected to the upper cover plate 1, and the other right-angled side is connected to the vertical ribs 2. The lower end is aligned with the lower end surface of the vertical ribs 2. There is a symmetrically arranged L-shaped transverse rib 5 at each end of the outer side of the three vertical ribs 2. The horizontal portion of the L-shaped transverse rib 5 is connected to the upper cover plate 1 and aligned with the end of the upper cover plate 1. The vertical portion of the L-shaped transverse rib 5 is connected to the vertical ribs 2 and aligned with the lower end of the vertical ribs 2.

[0073] The present invention provides a multi-configuration crawler support device, specifically a support device with two configurations used on ultra-large tonnage mining excavators. The two configurations are used in combination to effectively support the crawler of the mining excavator, thereby meeting the walking performance of the entire machine.

[0074] As shown in Figure 8, in the early stages of mining excavator use, the center carrier sprocket seat L-2 was designed as a prefabricated mounting seat, such as the support device II mentioned in the present invention. Bolts a and washers b were used to connect the connecting plate II-2 of the support device II to the center mounting position Ib of the longitudinal beam structure L-1. The assembled support device II consists of two mounting plates II-1. The carrier sprocket L-2 is mounted in the mounting holes of the two mounting plates II-1. Together with the two carrier sprockets L-2 on either side, it supports the crawler track K-2 and prevents it from sagging excessively.

[0075] As shown in Figure 6 and Figure 7, as the mining excavator's operating time and travel increase, wear between the crawler track K-2 and the pin increases, causing the track shoe to sag more and more. This necessitates the use of a support device I to support the track shoe. The support frame I-1 of the support device I is securely connected to two wear strips 6 using six sets of bolts 7 and washers 8 on each side. The wear strips 6 have internally threaded blind holes. After the support frame I-1 and the wear strips 6 are assembled, the support device I is formed. The assembled support device I is then installed on the longitudinal beam structure L-1. Three position holes are opened on the top plate of the longitudinal beam structure L-1, namely the mounting positions Ia on both sides and the middle mounting position Ib. The support device I is connected to the mounting positions Ia on both sides of the longitudinal beam structure L-1 through the second fixed mounting plates 3 on both sides by bolts c and washers d, and the middle first fixed mounting plate 4 is connected to the middle mounting position Ib of the longitudinal beam structure L-1 by bolts a and washers b. After the connection is completed, the two wear-resistant strips 6 of the support device I are just supported on the track surface of the crawler shoe, forming an effective support for the crawler K-2.

[0076] The wear strips 6 of the support device I are made of a special wear-resistant material and can be replaced at any time after assembly. As the wear and tear between the wear strips 6 and the track surface increases, the support device I can be removed and replaced with the Mina wear strips 6. The new wear strips can then be replaced and the support can be continued. This solution is highly reliable and has strong practical value, worthy of promotion, and solves the bottleneck of traditional design.

[0077] In summary, the present invention discloses a track support device with multiple configurations, including a support device I and a support device II. Support device I includes a support frame, two wear-resistant strips, and is assembled into an integral body by bolts and washers. The support frame of support device I is fixedly connected to the longitudinal beam structure through three sets of mounting positions. The two wear-resistant strips support the two rail surfaces of the track plate, which well realizes the support function of the track and effectively supports the track pin shaft after severe wear; support device II is formed by welding a connecting plate and two mounting plates as a whole. Multiple mounting holes are opened on both sides of the connecting plate, and the connection with the longitudinal beam structure is achieved by bolts and washers. The two mounting plates are welded on both sides of the connecting plate at a certain distance, and the support sprocket is installed on support device II to achieve the support function of the track plate. The mounting hole positions of the middle connecting plate of support device I and support device II are the same, which can realize the universal matching of the two devices and realize the track support device with multiple configurations. The two configurations of track support devices can effectively realize stable support of the track in the early stage and the late stage of wear, and are easy to install and disassemble.

[0078] The present invention also discloses a walking mechanism, comprising a longitudinal beam structure and a crawler track, wherein the above-mentioned crawler track supporting device with multiple configurations is installed between the longitudinal beam structure and the crawler track.

[0079] The invention also discloses an engineering machine equipped with the above-mentioned traveling mechanism.

[0080] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0081] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are also intended to fall within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art will be able to use them in combination based on the known technical solutions and the technical problems to be solved by this application.

[0082] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A crawler support device with multiple configurations, characterized in that: include: Support device II is installed on the longitudinal beam structure, and carrier sprocket I is installed on support device II, and together with carrier sprocket II on both sides, it supports the initial track shoe; Support device I is installed on the longitudinal beam structure after the support device II is removed, and is used to support the two track surfaces of the track shoe, and together with the carrier sprockets II on both sides, it can support the track shoe in the later stage of wear; The middle part of the support device I has the same installation position as the support device I, which can realize the universal matching of the two support devices and switch according to different states of the track to achieve effective support, thereby forming a multi-configuration track support device.

2. A multi-configuration crawler support device according to claim 1, characterized in that: The supporting device II comprises: A connecting plate is mounted on the longitudinal beam structure and has the same mounting components as the middle portion of the supporting device I. The mounting position of the connecting plate is substantially located in the middle of the supporting sprockets II on both sides; A pair of mounting plates facing each other are fixed on both sides of the connecting plate. The center distance between the mounting holes of the two plates matches the mounting size of the carrier sprocket I. The carrier sprocket I is fixed on the two mounting plates.

3. The multi-configuration crawler support device according to claim 2, characterized in that: After the connecting plate and the mounting plate are fixed together, their heights are equal to the height of the drag chain wheel seat on the longitudinal beam structure, and the height of the supporting sprocket I installed on the supporting device II is equal to the height of the supporting sprocket II installed on the drag wheel seat.

4. The multi-configuration crawler support device according to claim 1, characterized in that: The supporting device I comprises: a support bracket, the bottom of which is mounted on the longitudinal beam structure; A pair of wear-resistant strips are symmetrically arranged on both sides of the top surface of the support bracket for supporting the track surfaces on both sides of the track shoe. The overall height of the combination of the support bracket and the wear-resistant strips matches the height of the track shoe to ensure that it is at a horizontal surface.

5. The multi-configuration crawler support device according to claim 4, characterized in that: The wear-resistant strip is detachably mounted on the support bracket and can be replaced at any time according to the degree of wear.

6. The multi-configuration crawler support device according to claim 5, characterized in that: The wear-resistant strip is provided with a plurality of internal threaded blind holes on the side facing the support bracket, and the support bracket is provided with a plurality of through holes corresponding to the internal threaded blind holes one by one. Bolts pass through the through holes and are tightened in the internal threaded blind holes to fix the wear-resistant strip on the support bracket.

7. The multi-configuration crawler support device according to claim 4, characterized in that: The support bracket comprises: An upper cover plate is used for assembling the wear-resistant strips, and both ends of the upper cover plate are close to the corresponding support sprocket II; The three vertical ribs supported on the bottom surface of the upper cover plate are installed with the upper profile of the vertical ribs matching the profile of the upper cover plate. The middle vertical rib is installed at the center of the upper cover plate, and the two vertical ribs on both sides are arranged symmetrically with respect to the middle vertical rib; A first fixed mounting plate for mounting on the longitudinal beam structure, fixed to the bottom of the middle vertical rib plate, and having the same mounting components as the support device II; A pair of second fixing plates for being installed on the longitudinal beam structure are respectively fixed to the bottoms of the two vertical rib plates on both sides.

8. The multi-configuration crawler support device according to claim 7, characterized in that: The upper cover plate is formed by bending twice and has a centrally symmetrical structure. The upper end is a flat plate, and multiple through holes are symmetrically opened on both sides of the flat plate for installation with the upper wear-resistant strip; the upper cover plate has downward inclined plates on both sides for allowing the soil on the crawler shoe to slide to the ground along the inclined surface.

9. The multi-configuration crawler support device according to claim 7, characterized in that: The first fixed mounting plate and the second fixed mounting plate are coplanar, the second fixed mounting plate is provided with a plurality of mounting holes II, the first fixed mounting plate is provided with a plurality of mounting holes I, and the positions and sizes of the plurality of mounting holes I are equal to the positions and sizes of the mounting holes provided on the connecting plate of the support device II; The longitudinal beam structure is provided with threaded holes coaxial with the mounting hole I and the mounting hole II, and the first and second fixed mounting plates are both fixed to the longitudinal beam structure by bolts.

10. The multi-configuration crawler support device according to claim 7, characterized in that: There are two symmetrically arranged connecting transverse ribs between the three vertical ribs; The connecting transverse ribs are right-angled and have a large arc transition, wherein one right-angle side is connected to the upper cover plate, the other right-angle side is connected to the vertical ribs, and the lower end is aligned with the lower end surface of the vertical ribs.

11. The multi-configuration crawler support device according to claim 7, characterized in that: There is a symmetrically arranged L-shaped transverse rib plate at each end of the outer side of the three vertical rib plates. The horizontal part of the L-shaped transverse rib plate is connected to the upper cover plate and aligned with the end of the upper cover plate. The vertical part of the L-shaped transverse rib plate is connected to the vertical rib plate and aligned with the lower end of the vertical rib plate.

12. A method for using the multi-configuration crawler support device according to any one of claims 1 to 11, characterized in that: In the early stage of engineering machinery application, the middle sprocket seat is designed as an assembled mounting seat. The connecting plate of the support device II is connected to the middle connection position of the longitudinal beam structure by bolts. The sprocket I is installed on the mounting plate of the support device II, and together with the sprockets II on both sides, the initial track shoe is supported. As the track and the pin shaft gradually wear out, the track shoe will sag more and more. Two wear-resistant strips are assembled on the support frame to form support device I. Support device II is removed and the assembled support device I is installed on the longitudinal beam structure. Support device I is connected to the installation positions on both sides of the longitudinal beam structure through the fixed installation plates on both sides, and the middle fixed installation plate of support device I is connected to the middle installation position of the longitudinal beam structure. After the connection is completed, the two wear-resistant strips of support device I are just supported on the track surface of the track shoe, forming an effective support for the track.

13. A walking mechanism comprising a longitudinal beam structure and a crawler track, characterized in that: The multi-configuration crawler support device according to any one of claims 1 to 11 is installed between the longitudinal beam structure and the crawler track.

14. An engineering machine, characterized in that: It is equipped with a multi-configuration crawler support device as described in any one of claims 1 to 11; or, it is equipped with a walking mechanism as described in claim 13.

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