Combined track assembly for excavator

Abstract

The combined track assembly for the excavator comprises a bearing plate, horizontal plates with the length smaller than that of the bearing plate are arranged in the middle of the lower portions of the two sides of the bearing plate, a connecting plate is installed at the end, away from the bearing plate, of each horizontal plate, and rotating wheels are connected between the two ends of each connecting plate and one side of the bearing plate through bearings. A tensioning assembly and a plurality of thrust wheels are installed at the upper end and the lower end of the horizontal plate respectively, and a crawler belt is arranged outside the rotating wheel, the tensioning assembly and the thrust wheels. The lifting device has the advantages that the lifting plate is driven to ascend and descend through the tensioning assembly, namely the lifting assembly, so that the tensioning wheel ascends and descends, the tightness degree of the crawler belt is changed, and when the crawler belt becomes tight, the situation that when an excavator is used, due to the uneven road, the crawler belt and a chain wheel are loosened, operation of the excavator is hindered, and operation is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to a combined crawler assembly for excavators. Background Art

[0002] An excavator is a kind of construction machinery. In the excavation of buildings, factories, channels, canals and earthwork, excavators have gradually replaced a large amount of manual labor and become an indispensable tool for people's excavation work. The crawler is driven by the driving wheel. It is a flexible chain around the driving wheel, road wheel, idler wheel and track roller. It plays an important role in military and industry, and is often used as a moving part of large machinery such as excavators and tanks.

[0003] During the use of the excavator, due to the uneven road, the crawler and the sprocket become loose, which hinders the operation of the excavator and affects the operation. For this reason, we propose a combined crawler assembly for the excavator. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the above problems and provide a combined crawler assembly for an excavator.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a combined crawler assembly for an excavator, including a load-bearing plate, a horizontal plate with a length less than its length is provided at the lower center position on both sides of the load-bearing plate, a connecting plate is installed at one end of the horizontal plate away from the load-bearing plate, and each bearing between the two ends of the connecting plate and one side of the load-bearing plate is connected to a rotating wheel, and a tensioning assembly and a plurality of supporting rollers are respectively installed on the upper and lower ends of the horizontal plate, and crawlers are arranged outside the rotating wheel, the tensioning assembly and the supporting roller.

[0006] The tensioning assembly includes a box body installed on the upper end of the horizontal plate, a lifting assembly is installed in the box body, a lifting plate connected to the lifting assembly is provided at the upper end of the box body, and a tensioning wheel in contact with the inner side of the crawler is installed at the upper end of the lifting plate.

[0007] Furthermore, the lifting assembly includes a slide groove provided at the upper end of the box body, a pair of left-right symmetrical sliders are slidably connected in the slide groove, a pair of threaded rods passing through the sliders and threadedly connected thereto are connected to the bearings between the left and right walls of the slide groove, a guide block through which the threaded rods pass is provided at the center of the slide groove, a pair of support rods are hinged at the upper end of the slider, both sides of the lifting plate are hinged to the other end of the support rods respectively, a pair of guide rods passing through the guide blocks are fixed to the lower end of the lifting plate, and power assemblies connected to the pair of threaded rods are installed at both ends of the box body.

[0008] Furthermore, the power assembly includes a motor installed at one end of the box body and connected to one of the threaded rods, the other end of the threaded rod passes through the side wall of the box body and is connected to a sprocket, and a pair of sprockets are externally meshed with chains.

[0009] Furthermore, a pair of hinged seats 1 hinged to one end of the support rod are installed at the upper end of the sliding block, and a pair of hinged seats 2 hinged to the other end of the support rod are installed at each end of the lifting plate.

[0010] Furthermore, the guide block is integrated with the box body and is provided with a through hole through which the guide rod passes, and the through hole is misaligned with the threaded rod.

[0011] The advantages of the utility model compared with the prior art are:

[0012] 1. The lifting plate is driven up and down by the tensioning assembly, that is, the lifting assembly, so that the tensioning wheel is raised and lowered, thereby changing the tightness of the track. When the track becomes tight, it prevents the track and the sprocket from loosening due to uneven roads during the use of the excavator, which causes the operation of the excavator to be hindered and the operation to be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the overall structure diagram of the utility model.

[0014] Figure 2 It is the overall internal structure diagram of the utility model.

[0015] Figure 3 It is a structural diagram of the tensioning assembly of the utility model.

[0016] Figure 4 It is a partial structural diagram of the lifting component of the utility model.

[0017] Figure 5 This is a guide rod installation structure diagram of the utility model.

[0018] As shown in the figure: load-bearing plate 1, horizontal plate 101, connecting plate 2, rotating wheel 3, tensioning assembly 4, supporting wheel 5, track 6, box body 7, slide groove 701, lifting assembly 8, slider 9, threaded rod 10, guide block 11, through hole 1101, support rod 12, guide rod 13, motor 14, sprocket 15, chain 16, articulated seat 1 17, articulated seat 2 18, lifting plate 19, tensioning wheel 20. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] Combined with Figure 1-3A combined crawler assembly for an excavator includes a load-bearing plate 1, and horizontal plates 101 with a length less than the length of the load-bearing plate 1 are provided at the lower center of both sides of the load-bearing plate 1. A connecting plate 2 is installed at one end of the horizontal plate 101 away from the load-bearing plate 1, and a rotating wheel 3 is connected to each bearing between the two ends of the connecting plate 2 and one side of the load-bearing plate 1. A tensioning assembly 4 and a plurality of supporting rollers 5 are installed at the upper and lower ends of the horizontal plate 101, respectively. A crawler 6 is provided outside the rotating wheel 3, the tensioning assembly 4, and the supporting rollers 5. The tensioning assembly 4 includes a box body 7 installed at the upper end of the horizontal plate 101, and a lifting assembly 8 is installed in the box body 7. A lifting plate 19 connected to the lifting assembly 8 is provided at the upper end of the box body 7, and a tensioning wheel 20 in contact with the inner side of the crawler 6 is installed at the upper end of the lifting plate 19.

[0021] During the specific implementation of the utility model, the lifting plate 19 is driven to rise and fall through the tensioning assembly 4, that is, through the lifting assembly 8, so that the tensioning wheel 20 is raised and lowered, thereby changing the tightness of the crawler track 6. When the crawler track 6 becomes tighter, it is prevented that the crawler track and the sprocket are loosened due to uneven roads during the use of the excavator, resulting in obstruction of the operation of the excavator and affecting the operation.

[0022] Combined with Figure 3-5 The lifting assembly 8 includes a slide groove 701 provided at the upper end of the box body 7, a pair of left-right symmetrical sliders 9 are slidably connected in the slide groove 701, a pair of threaded rods 10 passing through the sliders 9 and threadedly connected thereto are connected to the bearings between the left and right walls of the slide groove 701, a guide block 11 through which the threaded rod 10 passes is provided at the center of the slide groove 701, a pair of support rods 12 are hinged at the upper end of the slider 9, the two sides of the lifting plate 19 are respectively hinged to the other end of the support rod 12, a pair of guide rods 13 passing through the guide block 11 are fixed at the lower end of the lifting plate 19, and power assemblies connected to the pair of threaded rods 10 are installed at both ends of the box body 7. The power assembly includes a motor 14 installed at one end of the box body 7 and connected to one of the threaded rods 10, the other end of the threaded rod 10 passes through the side wall of the box body 7 and is connected to a sprocket 15, and a pair of chains 16 are meshed outside the sprockets 15.

[0023] When the lifting assembly 8 is in use, the corresponding threaded rod 10 is driven to rotate by the motor 14, thereby causing the corresponding sprocket 15 to rotate, and the other sprocket 15 is rotated through the meshing chain 16, so that the other threaded rod 10 rotates in the same direction, so that a pair of symmetrical sliders 9 slide relative to each other in the slide groove 701, so that the two pairs of support rods 12 act on the lifting plate 19, so that the lifting plate 19 is lifted and lowered under the guidance of the guide block 11 and the guide rod 13, so that the tensioning wheel 20 is lifted and lowered, thereby changing the tightness of the track 6.

[0024] Combined with Figure 4-5A pair of hinged seats 17 hinged to one end of the support rod 12 are installed at the upper end of the slider 9, and a pair of hinged seats 18 hinged to the other end of the support rod 12 are installed at each end of the lifting plate 19.

[0025] Combined with Figure 5 The guide block 11 is integrated with the box body 7 and is provided with a through hole 1101 through which the guide rod 13 passes. The through hole 1101 is misaligned with the threaded rod 10 to prevent the guide rod 13 from contacting the threaded rod 10.

[0026] The above describes the utility model and its implementation methods, which are not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A combined crawler assembly for an excavator, comprising a bearing plate (1), characterized in that: A horizontal plate (101) having a length less than that of the load-bearing plate (1) is provided at a lower center position on both sides of the load-bearing plate (1); a connecting plate (2) is installed at one end of the horizontal plate (101) away from the load-bearing plate (1); a rotating wheel (3) is connected to each bearing between the two ends of the connecting plate (2) and one side of the load-bearing plate (1); a tensioning assembly (4) and a plurality of supporting rollers (5) are installed at the upper and lower ends of the horizontal plate (101), respectively; tracks (6) are provided outside the rotating wheel (3), the tensioning assembly (4) and the supporting rollers (5); The tensioning assembly (4) comprises a box body (7) mounted on the upper end of a horizontal plate (101), a lifting assembly (8) being mounted inside the box body (7), a lifting plate (19) connected to the lifting assembly (8) being disposed at the upper end of the box body (7), and a tensioning wheel (20) in contact with the inner side of the crawler track (6) being mounted at the upper end of the lifting plate (19).

2. The combined crawler assembly for an excavator according to claim 1, characterized in that: The lifting assembly (8) comprises a slide groove (701) provided at the upper end of the box body (7), a pair of left-right symmetrical sliders (9) are slidably connected in the slide groove (701), a pair of threaded rods (10) passing through the sliders (9) and threadedly connected thereto are connected to the bearings between the left and right walls of the slide groove (701), a guide block (11) through which the threaded rod (10) passes is provided at the center of the slide groove (701), a pair of support rods (12) are hinged at the upper end of the slider (9), the two sides of the lifting plate (19) are respectively hinged to the other end of the support rods (12), a pair of guide rods (13) passing through the guide block (11) are fixed at the lower end of the lifting plate (19), and power assemblies connected to the pair of threaded rods (10) are installed at both ends of the box body (7).

3. The combined crawler assembly for an excavator according to claim 2, characterized in that: The power assembly comprises a motor (14) mounted on one end of the box body (7) and connected to a threaded rod (10); the other end of the threaded rod (10) passes through the side wall of the box body (7) and is connected to a sprocket (15); a pair of sprockets (15) are externally meshed with chains (16).

4. The combined crawler assembly for an excavator according to claim 2, characterized in that: A pair of hinged seats (17) hinged to one end of the support rod (12) are installed at the upper end of the slider (9), and a pair of hinged seats (18) hinged to the other end of the support rod (12) are installed at each end of the lifting plate (19).

5. The combined crawler assembly for an excavator according to claim 2, characterized in that: The guide block (11) is integrated with the box body (7) and is provided with a through hole (1101) through which the guide rod (13) passes. The through hole (1101) is offset from the threaded rod (10).

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