A distributed load-bearing structure of a rubber track shoe

Abstract

The present invention belongs to the field of track shoes, and specifically relates to a distributed load-bearing structure of a rubber track shoe, comprising an inner track shoe mechanism, an outer track shoe mechanism and a side track shoe which are arranged in combination; the inner track shoe mechanism comprises an inner track shoe with a cavity provided inside, a raised tooth pillow is formed on the upper part of the inner track shoe, and a plurality of tooth grooves are arranged on the tooth pillow; the outer track shoe mechanism comprises an outer track frame, a core rod is symmetrically installed on the upper layer of the outer track frame, inner support members are installed at intervals on the core rod, and a raised guide plate member is installed on the bottom of the inner support member; a ring frame is also sleeved on the outer wall of the core rod; gravity is dispersed by the upper track shoe, the reaction force of complex road surface is dispersed by the movable outer track shoe, and the shear force during turning is dispersed by the adjustable side track shoe, and the load is distributed at multiple points, thereby reducing the loss of the track shoe, thereby improving its service life, and adapting to complex road environment.

Description

Technical Field

[0001] The invention relates to the field of track shoes, and in particular to a distributed load-bearing structure of a rubber track shoe. Background Art

[0002] The patent with application number CN201910300172.3 discloses a track system and engineering vehicle for movable heavy engineering machinery, wherein the track system includes a track, a driving wheel, a guide wheel, a plurality of supporting rollers and a plurality of sprocket wheels; the track is composed of a plurality of track shoes connected in sequence to form a closed loop; the driving wheel is arranged in the track and located at the rear end of the track; the guide wheel is arranged in the track and located at the front end of the track; a plurality of supporting rollers are arranged in the track at intervals and located at the lower part between the driving wheel and the guide wheel; a plurality of sprocket wheels are arranged in the track at intervals and located at the upper part between the driving wheel and the guide wheel. The present invention greatly optimizes the contact conditions between the track shoes and the rolling surfaces of the supporting rollers, the guide wheels and the sprocket wheels, the track can provide continuous support to the supporting rollers, the contact stress is smaller, the overall casting processability is better, and the total weight is lighter, which helps to improve the flexibility and maneuverability of the whole machine while ensuring reliability.

[0003] Its rubber track shoes are still of an integrated design. During the operation of the track system, when the rubber track shoes come into contact with the road surface, the upper and lower layers of the track are respectively affected by the gravity of the construction machinery and the reaction force of the road surface. The bidirectional stress is difficult to disperse, resulting in peeling, falling off, and cracking of the rubber track shoes, which are difficult to solve. When turning, the edges of the rubber track shoes are affected by the roll shear force, and there is a risk of edge wheel debonding, affecting driving safety. Summary of the invention

[0004] (I) Purpose of the invention

[0005] In order to solve the technical problems existing in the background technology, the present invention proposes a distributed load-bearing structure of a rubber track shoe, which has the characteristics of split structure combined assembly, and multi-point distributed load-bearing reduces the loss of the rubber track shoe on complex road surfaces and increases the service life of the rubber track shoe.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the present invention provides a distributed load-bearing structure of a rubber track shoe, comprising an inner track shoe mechanism, an outer track shoe mechanism and a side track shoe that are arranged in combination;

[0008] The inner track shoe mechanism comprises an inner track shoe with a cavity formed inside, a raised tooth pillow is formed on the upper part of the inner track shoe, and a plurality of tooth grooves are arranged on the tooth pillow;

[0009] The outer crawler shoe mechanism comprises an outer crawler frame, the upper layer of the outer crawler frame is symmetrically provided with a core rod, inner support members are installed at intervals on the core rod, and a raised guide plate member is installed at the bottom of the inner support member;

[0010] The outer wall of the mandrel is also sleeved with a ring frame, a suspension plate is installed at the lower part of the ring frame, a spring member is connected to the bottom of the suspension plate, and the lower layer of the spring member is connected to an outer track shoe;

[0011] The steering mechanism includes a first shaft frame connected to the inner track shoe and a second shaft frame connected to the side track shoe. A shaft rod passes through the through holes of the first shaft frame and the second shaft frame. The shaft rod is connected to the output end of the steering motor. An angle sensor is provided on the steering motor.

[0012] Preferably, the bolt mechanism includes a first bolt groove provided on the tooth pillow and a second bolt groove installed on the outer track frame, and the first bolt groove and the second bolt groove are screwed and fixed by bolts.

[0013] Preferably, the lower portion of the first bolt groove and the upper portion of the second bolt groove are attached to each other, and matching threaded inner grooves are formed on the inner walls of both.

[0014] Preferably, the outer track frame is an inverted "U-shaped" structure, and a fixed track shoe is formed at the end.

[0015] Preferably, a through hole for the core rod to pass through is formed on the inner support member, and the guide plate member formed at the bottom divides the inner support member into two sections, which are respectively located above the adjacent outer track shoes.

[0016] Preferably, the ring frame is located in the middle of two adjacent inner support members and is symmetrically mounted on two core rods, and a movable space for the spring member to deform is reserved between the suspension plate and the outer track plate.

[0017] Preferably, the limiting mechanism includes a boss groove symmetrically opened on the outer track shoe, a boss connected to the spring member is placed in the boss groove, and a limiting bolt passing through the outer track shoe is installed in a through hole opened between the boss and the boss groove.

[0018] Preferably, the outer track shoe moves up and down along the guide plate members attached on both sides, and a limiting groove is reserved between the outer track shoe and the guide plate members.

[0019] Preferably, a groove is provided at the bottom of the outer track shoe, and the grooves provided between adjacent outer track shoes are of a through structure.

[0020] The above-mentioned technical scheme of the present invention has the following beneficial technical effects: the track plate adopts a split combination design, the gravity is dispersed by the upper track plate, the reaction force of complex road surfaces is dispersed by the movable outer track plate, and the shear force during turning is dispersed by the adjustable side track plate. The load is distributed at multiple points, which reduces the loss of the track plate, thereby increasing its service life and adapting to complex road environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the lower structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the direction adjustment mechanism of the present invention;

[0024] Figure 4 It is a schematic diagram of the separation structure of the inner track shoe mechanism and the outer track shoe mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the outer track shoe mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the limiting mechanism of the present invention.

[0027] Reference numerals:

[0028] 11. Inner track shoe; 12. Tooth pillow; 13. Tooth groove; 21. First bolt groove; 22. Bolt; 23. Second bolt groove; 31. Outer track frame; 32. Mandrel; 33. Inner support member; 34. Guide plate member; 41. Ring frame; 42. Suspension plate; 43. Spring member; 44. Outer track shoe; 45. Groove; 51. Boss groove; 52. Boss; 53. Limit bolt; 6. Side track shoe; 71. First axle frame; 72. Second axle frame; 73. Shaft; 74. Adjustment motor; 75. Angle sensor. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0030] like Figure 1-6 As shown, a distributed load-bearing structure of a rubber track shoe proposed by the present invention comprises an inner track shoe mechanism, an outer track shoe mechanism and a side track shoe 6 which are arranged in combination;

[0031] The inner track shoe mechanism comprises an inner track shoe 11 with a cavity formed inside, a raised tooth pillow 12 is formed on the upper part of the inner track shoe 11, and a plurality of tooth grooves 13 are arranged on the tooth pillow 12. In the working state, the gear teeth on the outer wall of the driving wheel are embedded in the inner cavity of the tooth groove 13. As the driving wheel rotates, the driving wheel gears are sequentially embedded in the tooth grooves on the tooth pins 12 of the adjacent inner track shoes 11, driving the inner track shoes 11 to rotate alternately.

[0032] The outer crawler shoe mechanism comprises an outer crawler frame 31, a core rod 32 is symmetrically mounted on the upper layer of the outer crawler frame 31, inner support members 33 are installed at intervals on the core rod 32, and a raised guide plate member 34 is installed at the bottom of the inner support member 33;

[0033] The outer wall of the core rod 32 is also sleeved with a ring frame 41 , a hanging plate 42 is installed at the lower part of the ring frame 41 , a spring member 43 is connected to the bottom of the hanging plate 42 , and the lower layer of the spring member 43 is connected to an outer track shoe 44 .

[0034] It should be noted that: the inner track shoe mechanism is close to the outer wall of the driving wheel; the outer track shoe mechanism is close to the road surface; and the side track shoe 6 is at a certain distance from the road surface.

[0035] It should be added that, when assembling the crawler system, adjacent inner crawler shoe mechanisms are connected by hinges to form a disc-shaped structure that can rotate along the drive wheel.

[0036] In this embodiment, the outer track shoe mechanism assembly is installed in the inner cavity of the inner track shoe mechanism, and the outer track shoe 44 is designed in sections and is suspended below the suspension plate 42 by spring members 43 at equal intervals. When the track system moves over a complex road surface, the upward reaction force of the raised section protruding from the road surface acts on the outer track shoe 44, and the spring member 43 is compressed and deformed under the force, driving the outer track shoe 44 to extend upward along the guide plate member 34 installed at the bottom of the inner support member 33, switching the outer track shoe group in a flat state to a wavy state, so that it is closely attached to the raised section of the road surface, while ensuring the grip during the travel process, while solving the problem of the difficulty in dispersing the reaction force of the road surface.

[0037] As an example of the connection between the inner track shoe mechanism and the outer track shoe mechanism:

[0038] The bolt mechanism includes a first bolt groove 21 opened on the tooth pillow 12 and a second bolt groove 23 installed on the outer track frame 31. The first bolt groove 21 and the second bolt groove 23 are screwed and fixed by bolts 22. The outer track shoe mechanism is placed in the inner cavity of the inner track shoe mechanism. The bolts 22 at the four corners are screwed into the first bolt groove 21 and the second bolt groove 23 in sequence, which can ensure the stable connection between the inner track shoe mechanism and the outer track shoe mechanism.

[0039] The lower part of the first bolt groove 21 and the upper part of the second bolt groove 23 are attached to each other, and the inner walls of both are provided with matching threaded inner grooves. The outer wall of the bolt 22 is also provided with external threads, and the upper and lower sections are screwed into the lower part of the first bolt groove 21 and the second bolt groove 23 respectively.

[0040] like Figure 3 As shown, the steering mechanism includes a first shaft frame 71 connected to the inner track shoe 11 and a second shaft frame 72 connected to the side track shoe 6. A shaft rod 73 passes through the through holes of the first shaft frame 71 and the second shaft frame 72. The shaft rod 73 is connected to the output end of the steering motor 74. The steering motor 74 is provided with an angle sensor 75 for detecting the roll angle.

[0041] As a working example of the side track shoe 6, when the track system needs to be used for turning, the side track shoe 6 can be adjusted to a position attached to the road surface through the steering mechanism, and the steering motor 74 drives the shaft 73 to rotate in the first shaft frame 71, thereby driving the outer track shoe 6 connected to the second shaft frame 72 to rotate, and the shear force on the edge of the track shoe when turning is changed to the side track shoe 6 being subjected to force. Because the side wall of the side track shoe 6 is a curved structure, the curved surface contacts the ground after rotation, which increases the distributed force position other than the outer track shoe 44, prevents the track shoe from falling off the drive wheel, and improves the stability of the track system.

[0042] like Figure 4 As shown, the outer track frame 31 is an inverted "U-shaped" structure, and a fixed track shoe is formed at the end.

[0043] It can be understood that the upper part of the outer track frame 31 is retained in the inner cavity of the inner track shoe 11 and has no direct contact with the road surface. It is used to assist the installation of the outer track shoe 44. The edge-molded track shoe is a fixed design and is used to limit the position of each outer track shoe 44 in the middle.

[0044] like Figure 5 As shown, a through hole is provided on the inner support member 33 for the core rod 32 to pass through, and the guide plate member 34 formed at the bottom divides the inner support member 33 into two sections, which are respectively located above the adjacent outer track shoes 44; the ring frame 41 is located in the middle of the two adjacent inner support members 33, and is symmetrically installed on the two core rods 32, and a movable space for the spring member 43 to deform is reserved between the suspension plate 42 and the outer track shoe 44.

[0045] When the outer track shoe 44 below is affected by the reaction force of the road surface, the outer track shoe 44 compresses the spring member 43 upwards. The bottom separated by the inner support member 33 can prevent the spring member 43 from being over-compressed and can be reset when the road surface becomes flat again.

[0046] As an example of the movement of any outer track shoe 44: when the outer track shoe 44 is affected by the reaction force of a complex road surface, it moves up and down along the guide plate members 34 attached on both sides, and a limiting groove is left between the outer track shoe 44 and the guide plate member 34. The limiting groove is also designed to prevent the outer track shoe 44 from excessively moving upward and causing the spring member 43 to be squeezed and damaged.

[0047] like Figure 6 As shown, the limiting mechanism includes a boss groove 51 symmetrically opened on the outer track shoe 44, a boss 52 connected to the spring member 43 is placed in the boss groove 51, and a limiting bolt 53 passing through the outer track shoe 44 is installed in the through hole opened between the boss 52 and the boss groove 51.

[0048] Among them, when the outer track shoe 44 is damaged, the limit bolt 53 is taken out of the through hole opened between the boss 52 and the boss groove 51, and the replacement outer track shoe 44 is placed along the clamping area between the two guide plate members 34, and the boss 52 and the boss groove 51 are attached again, and then the limit bolt 53 is inserted into the through hole opened between the boss 52 and the boss groove 51, so that the outer track shoe 44 can be quickly replaced.

[0049] In order to prevent road sludge and impurities from scratching the surface of the outer track shoe 44, a groove 45 is further provided at the bottom of the outer track shoe 44. The groove 45 provided between adjacent outer track shoes 44 is a through structure, which can accommodate sludge and impurities in the groove 45 and increase the friction when it contacts the road surface.

[0050] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A distributed load-bearing structure of a rubber track shoe, characterized in that: It comprises an inner track shoe mechanism, an outer track shoe mechanism and a side track shoe (6) which are arranged in combination; The inner track shoe mechanism comprises an inner track shoe (11) with a cavity formed inside, a raised tooth pillow (12) is formed on the upper part of the inner track shoe (11), and a plurality of tooth grooves (13) are arranged on the tooth pillow (12); The outer crawler plate mechanism comprises an outer crawler frame (31), a core rod (32) is symmetrically mounted on the upper layer of the outer crawler frame (31), inner support members (33) are installed at intervals on the core rod (32), and a raised guide plate member (34) is installed at the bottom of the inner support member (33); The outer wall of the core rod (32) is also sleeved with a ring frame (41), a suspension plate (42) is installed at the lower part of the ring frame (41), a spring member (43) is connected to the bottom of the suspension plate (42), and the lower layer of the spring member (43) is connected to an outer track shoe (44); The outer track shoe (44) is designed in sections and is suspended below the suspension plate (42) at equal intervals through the spring member (43); The inner support member (33) is provided with a through hole for the core rod (32) to pass through, and the guide plate member (34) formed at the bottom divides the inner support member (33) into two sections, which are respectively located above the adjacent outer track shoes (44); The ring frame (41) is located in the middle of two adjacent inner support members (33) and is symmetrically mounted on two core rods (32); a movable space for the spring member (43) to deform is reserved between the suspension plate (42) and the outer track plate (44); The steering mechanism comprises a first shaft frame (71) connected to the inner track shoe (11) and a second shaft frame (72) connected to the side track shoe (6); a shaft rod (73) passes through through holes of the first shaft frame (71) and the second shaft frame (72); the shaft rod (73) is connected to an output end of a steering motor (74); and an angle sensor (75) is provided on the steering motor (74).

2. The load-bearing distribution structure of a rubber track shoe according to claim 1, characterized in that: The bolt mechanism comprises a first bolt groove (21) formed on the tooth pillow (12) and a second bolt groove (23) mounted on the outer track frame (31); the first bolt groove (21) and the second bolt groove (23) are screwed and fixed via bolts (22).

3. The load-bearing distribution structure of a rubber track shoe according to claim 2, characterized in that: The lower part of the first bolt groove (21) and the upper part of the second bolt groove (23) are attached to each other, and matching threaded inner grooves are provided on the inner walls of both.

4. The load-bearing distribution structure of a rubber track shoe according to claim 1, characterized in that: The outer crawler frame (31) is an inverted "U-shaped" structure, and a fixed crawler shoe is formed at the end.

5. The load-bearing distribution structure of a rubber track shoe according to claim 1, characterized in that: The limiting mechanism comprises a boss groove (51) symmetrically arranged on the outer track shoe (44), a boss (52) connected to the spring member (43) being placed in the boss groove (51), and a limiting bolt (53) penetrating the outer track shoe (44) being installed in a through hole arranged between the boss (52) and the boss groove (51).

6. The load-bearing distribution structure of a rubber track shoe according to claim 1, characterized in that: The outer track shoe (44) moves up and down along the guide plate members (34) attached on both sides, and a limiting groove is reserved between the outer track shoe (44) and the guide plate member (34).

7. The load-bearing distribution structure of a rubber track shoe according to claim 1, characterized in that: A groove (45) is provided at the bottom of the outer track shoe (44), and the grooves (45) provided between adjacent outer track shoes (44) are of a through structure.

8. The load-bearing distribution structure of a rubber track shoe according to claim 1, characterized in that: The side wall of the side track shoe (6) is a curved surface structure, and the curved surface contacts the ground after rotation.

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