Crawler belt adjusting structure for electric shovel walking mechanism
By setting up a partition plate with a clamp in the track adjustment structure of the electric shovel walking mechanism, the problem of the pad plate displacement due to vibration is solved, the reliability and durability of the equipment are improved, and the failure rate and maintenance cost are reduced.
Patent Information
- Application Number
- CN202422110300.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-29
AI Technical Summary
The track adjustment structure of the existing electric shovel walking mechanism is prone to cause the pad displacement during vibration, causing the track to slack or mechanical failure, affecting the reliability and durability of the equipment.
A track adjustment structure including a tripod, a pad plate, a square shaft, a tensioner and a track are designed, and a partition plate with a clamp is provided between the tensioner and the pad plate. Through the matching of the partition plate and the rectangular hole, the position of the pad plate is fixed to prevent it from being displaced due to vibration.
It effectively prevents the displacement of the pad due to vibration, maintains the tightening state of the track, improves the reliability and durability of the electric shovel walking mechanism, and reduces the failure rate and maintenance costs.
Smart Images
Figure CN223031118U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mining equipment, in particular to a crawler adjustment structure for an electric shovel walking mechanism. Background Art
[0002] In mining work, the electric shovel is a heavy mechanical equipment, mainly used for earth and stone excavation operations in open-pit mines. The walking mechanism of the electric shovel is one of its key components, which is responsible for supporting the weight of the whole machine and realizing the walking function. The walking mechanism mainly includes parts such as a tripod, a square shaft, a tensioning wheel and a crawler. A rectangular hole is provided on the tripod, and the square shaft is inserted into the rectangular hole of the tripod to form a stable base to support other components of the electric shovel. A connecting end with a circular cross-section is provided at the end of the square shaft, and the tensioning wheel is sleeved on the connecting end of the square shaft. The inner side of the crawler is tangent to and in close contact with the outer edge of the tensioning wheel. By adjusting the position of the square shaft in the rectangular hole, and then adjusting the position of the tensioning wheel, the purpose of adjusting the tightness of the crawler can be achieved.
[0003] The existing adjustment method is to insert a pad into the rectangular hole to adjust the position of the square shaft in the rectangular hole. However, in the actual working environment, the electric shovel will vibrate during the movement, which may cause relative displacement between the pad and the rectangular hole, causing the pad to slide toward the tensioning wheel, which may cause a collision between the pad and the tensioning wheel, or cause the pad to detach from the rectangular hole and make the track loose.
[0004] If the displacement of the pad is not effectively prevented and this situation is not discovered in time, it may cause the tension wheel to rupture and deform, or even lead to serious faults such as square shaft breakage. These problems will not only cause a long downtime, but also increase the cost of spare parts, directly affect the operating efficiency of the equipment, and increase the labor intensity of maintenance personnel.
[0005] Therefore, in order to improve the reliability and durability of the electric shovel's traveling mechanism, effective measures must be taken to prevent the displacement of the pad, thereby avoiding the occurrence of the above-mentioned faults and improving the overall operating efficiency of the equipment. Utility Model Content
[0006] In order to solve the technical problems of low reliability and high failure rate of the existing devices, the utility model provides a crawler adjustment structure for the electric shovel walking mechanism with good reliability and durability.
[0007] The technical solution adopted by the utility model to solve its technical problems is:
[0008] The track adjusting structure for the walking mechanism of an electric shovel includes a footrest, a backing plate, a square shaft, a tensioning wheel, and a track. The footrest has a rectangular hole, and the square shaft passes through the rectangular hole of the footrest. The gaps between the front and rear sides of the square shaft and the rectangular hole are filled with detachable backing plates. The end of the square shaft is provided with a connecting end having a circular cross-section. The tensioning wheel is sleeved on the connecting end of the square shaft. The inner side of the track is tangent to and in close contact with the outer edge of the tensioning wheel. It also includes a baffle plate having a shaft hole. The baffle plate is sleeved on the connecting end of the square shaft and is located between the tensioning wheel and the backing plate. The shaft hole is in clearance fit with the connecting end of the square shaft. The left surface of the baffle plate contacts the side surface of the backing plate. A clamping plate is fixedly provided on the left surface of the baffle plate, and the clamping plate is clamped in the gap between the side surface of the backing plate and the rectangular hole.
[0009] Furthermore, the left surface of the baffle plate has a convex platform extending perpendicular to the left surface. The convex platform has a through hole, and the connecting end of the square shaft passes through the through hole. The outer edge of the convex platform is clamped in the rectangular hole.
[0010] Furthermore, the convex platform is composed of a first stop block and a second stop block. The first stop block and the second stop block are located at the outer edge of the shaft hole on the left surface of the baffle plate. The first stop block and the second stop block enclose to form a through hole. The through hole has the same radius as the shaft hole and their axes coincide. The outer walls of the first stop block and the second stop block are respectively clamped in the rectangular hole.
[0011] Furthermore, the clamping plate is arranged perpendicular to the left surface of the baffle plate, and the vertical height of the clamping plate is higher than that of the convex platform.
[0012] Furthermore, the baffle plate is provided with a mounting groove penetrating the left surface and the right surface. The clamping plate is embedded in the mounting groove and fixed by welding.
[0013] Furthermore, the material of the baffle plate is Q345D.
[0014] The beneficial effects of the present utility model are as follows:
[0015] 1. By arranging a baffle plate with a clamping plate between the tensioning wheel and the backing plate, it can effectively prevent the displacement of the backing plate caused by vibration, thereby ensuring the fastening state of the track. This not only improves the reliability of the walking mechanism of the electric shovel but also reduces the risk of track slack or other mechanical failures caused by the displacement of the backing plate.
[0016] 2. The convex platform design on the baffle plate further strengthens the connection stability between the baffle plate and the square shaft. Since the outer edge of the convex platform is clamped in the rectangular hole, this structure can better fix the position of the baffle plate, prevent its displacement during use, and increase the stability of the entire track adjusting structure.
[0017] 3. By dividing the boss into a first stop block and a second stop block, and aligning the through-hole formed by them with the rectangular hole, this design not only maintains the function of the boss, but also simplifies the assembly process, improves the manufacturing efficiency, and further enhances the fixing effect between the partition board and the rectangular hole due to the existence of the first stop block and the second stop block.
[0018] 4. The height of the clamping plate is designed to be higher than that of the boss, which can ensure that the clamping plate is more firmly clamped in the gap between the side of the backing plate and the rectangular hole, thereby more effectively preventing the displacement of the backing plate and enhancing the overall stability of the system.
[0019] 5. After installing a groove on the partition board and embedding the clamping plate, welding fixation is carried out. This design increases the welding surface between the clamping plate and the partition board, increases the crack resistance, and this lap welding method makes the connection between the clamping plate and the partition board more firm and not easily loosened due to changes in the external environment.
[0020] 6. Select Q345D as the material of the partition board. This material has good comprehensive mechanical properties and is suitable for use under harsh working conditions. It can withstand large stresses and is not easily deformed, thus extending the service life of the component and reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic structural diagram of the track adjusting structure for the walking mechanism of an electric shovel of the present utility model;
[0022] Figure 2 is a front view of the partition board;
[0023] Figure 3 is a top view of the partition board;
[0024] Figure 4 is a left view of the partition board;
[0025] In the figure, the labels are: 1 - tripod, 2 - backing plate, 3 - square shaft, 4 - tensioning wheel, 5 - track, 6 - rectangular hole, 7 - partition board, 71 - shaft hole, 8 - clamping plate, 9 - boss, 91 - first stop block, 92 - second stop block, 93 - through-hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application more clearly expressed, the present utility model will be further described below with reference to the accompanying drawings.
[0027] First of all, it should be stated that the technical solutions of the embodiments of this application are clearly and completely described. The described embodiments are part of the embodiments of this application, rather than a limitation to the present utility model. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by this application.
[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "first", "second", "upper", "lower", "left", "right", "inner", "outer", "axial" or "radial" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present utility model.
[0029] It should be noted that in the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated: it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0030] Referring to Figures 1 to 4 , the present utility model provides a track adjusting structure for an electric shovel traveling mechanism.
[0031] As Figure 1 shown, in the embodiment of this solution, the track adjusting structure for an electric shovel traveling mechanism includes a footrest 1, a backing plate 2, a square shaft 3, a tensioning wheel 4, and a track 5. The footrest 1 has a rectangular hole 6. The square shaft 3 passes through the rectangular hole 1 of the footrest 1. The gaps between the front and rear sides of the square shaft 3 and the rectangular hole 6 are filled with detachable backing plates 2. The end of the square shaft 3 is provided with a connecting end with a circular cross-section. The tensioning wheel 4 is sleeved on the connecting end of the square shaft 3. The inner side of the track 5 is tangent to and in close contact with the outer edge of the tensioning wheel 4. By adjusting the thickness of the backing plates 2 on the front and rear sides of the square shaft 3, the tensioning wheel 4 is driven to move in the radial direction of the track 5, thereby adjusting the tightness of the track 5. It also includes a baffle 7 having a shaft hole 71. The baffle 7 is sleeved on the connecting end of the square shaft 3 and is located between the tensioning wheel 4 and the backing plate 2. The shaft hole 71 has a clearance fit with the connecting end of the square shaft 3. The left surface of the baffle 7 is in contact with the side surface of the backing plate 2. A clamping plate 8 is fixedly provided on the left surface of the baffle 7, and the clamping plate 8 is clamped in the gap between the side surface of the backing plate 2 and the rectangular hole 6.
[0032] By providing a baffle plate 7 with a clamping plate 8 between the tension wheel 4 and the backing plate 2, displacement of the backing plate 2 due to vibration can be effectively prevented, so that the backing plate 2 can be firmly located in the rectangular hole 6, and collision between the backing plate 2 and the tension wheel 4 and separation of the backing plate 2 from the rectangular hole 6 can be avoided to a great extent, thereby causing serious faults such as cracking and deformation of the tension wheel 4 and even breaking of the square shaft 3. This will reduce the failure rate, avoid problems such as downtime processing and spare parts cost consumption, and improve the reliability and durability of the device.
[0033] As for how the clamping plate 8 is set, the clamping plate 8 can be set perpendicular to the left surface of the baffle plate 7, or can be set at a certain inclination. There is no special limitation here. As long as the clamping plate 8 can be clamped in the gap between the side of the pad 2 and the rectangular hole 6, the baffle plate 7 can be fixed in the rectangular hole 6.
[0034] like Figures 2 to 4 As shown, in the embodiment of the present scheme, the left surface of the baffle plate 7 has a boss 9 extending perpendicularly to the left surface, the boss 9 has a through hole 93, the connecting end of the square shaft 3 is passed through the through hole 93, and the outer edge of the boss 9 is clamped in the rectangular hole 6.
[0035] The radius of the through hole 93 here can be set to be larger than the shaft hole 71, or can be equal to the shaft hole 71, which is not particularly limited here.
[0036] The through hole 93 can be a complete hole or an incomplete hole, as long as it can avoid the connection end of the square shaft 3.
[0037] like Figures 2 to 4 As shown, in the embodiment of the present scheme, the boss 9 is composed of a first stop block 91 and a second stop block 92, and the first stop block 91 and the second stop block 92 are located at the outer edge of the axial hole 71 on the left surface of the baffle plate 7, and the first stop block 91 and the second stop block 92 are surrounded by a through hole 93, and the through hole 93 has the same radius as the axial hole 71 and the axis coincides with the through hole 93, and the outer wall of the first stop block 91 and the outer wall of the second stop block 92 are respectively clamped in the rectangular hole 6.
[0038] Here, the through hole 93 is an incomplete hole, which is surrounded by the first stopper 91 and the second stopper 92 .
[0039] like Figures 2 to 4 As shown, in the embodiment of the present scheme, the clamping plate 8 is arranged perpendicular to the left surface of the baffle plate 7 , and the vertical height of the clamping plate 8 is higher than the boss 9 .
[0040] like Figures 2 to 4 As shown, in the embodiment of the present scheme, the baffle plate 7 is provided with a mounting groove penetrating the left surface and the right surface, and the clamping plate 8 is embedded in the mounting groove and fixed by welding.
[0041] The installation groove is opened on the partition board 7 and the clamping plate 8 is embedded and then welded and fixed. This design increases the welding surface between the clamping plate 8 and the partition board 7, increases the crack resistance, and this lap welding method makes the connection between the clamping plate 8 and the partition board 7 more firm and not easy to loosen due to changes in the external environment.
[0042] In the embodiment of the present solution, the material of the partition board 7 is Q345D. Selecting Q345D as the material of the partition board 7, this material has good comprehensive mechanical properties and is suitable for use under harsh working conditions. It can withstand large stresses and is not easy to deform, thus extending the service life of the component and reducing the maintenance cost.
Claims
1. A crawler track adjustment structure for an electric shovel walking mechanism, comprising a foot frame (1), a pad (2), a square shaft (3), a tensioning wheel (4) and a crawler track (5), wherein the foot frame (1) has a rectangular hole (6), the square shaft (3) is inserted into the rectangular hole (6) of the foot frame (1), the gap between the front and rear sides of the square shaft (3) and the rectangular hole (6) is filled by a detachable pad (2), a connecting end with a circular cross section is arranged at the end of the square shaft (3), the tensioning wheel (4) is sleeved on the connecting end of the square shaft (3), the inner side of the crawler track (5) is tangent to and in close contact with the outer edge of the tensioning wheel (4), and the characteristics are: The invention also comprises a baffle plate (7) having an axial hole (71), the baffle plate (7) being sleeved on the connecting end of the square shaft (3) and being located between the tension wheel (4) and the backing plate (2), the axial hole (71) and the connecting end of the square shaft (3) being clearance-matched, the left surface of the baffle plate (7) being in contact with the side surface of the backing plate (2), and a clamping plate (8) being fixedly arranged on the left surface of the baffle plate (7), and the clamping plate (8) being clamped in the clearance between the side surface of the backing plate (2) and the rectangular hole (6).
2. The crawler adjustment structure for the electric shovel walking mechanism according to claim 1, characterized in that: The left surface of the baffle plate (7) has a boss (9) extending perpendicularly to the left surface, the boss (9) has a through hole (93), the connecting end of the square shaft (3) is inserted into the through hole (93), and the outer edge of the boss (9) is clamped in the rectangular hole (6).
3. The crawler adjustment structure for the electric shovel walking mechanism according to claim 2, characterized in that: The boss (9) is composed of a first stopper (91) and a second stopper (92). The first stopper (91) and the second stopper (92) are located at the outer edge of the shaft hole (71) on the left surface of the baffle plate (7). The first stopper (91) and the second stopper (92) are combined to form a through hole (93). The through hole (93) and the shaft hole (71) have the same radius and their axes coincide. The outer wall of the first stopper (91) and the outer wall of the second stopper (92) are respectively clamped in the rectangular hole (6).
4. The crawler adjustment structure for the electric shovel walking mechanism according to claim 2, characterized in that: The clamping plate (8) is arranged perpendicularly to the left surface of the baffle plate (7), and the vertical height of the clamping plate (8) is higher than the boss (9).
5. The crawler adjustment structure for the electric shovel travel mechanism according to claim 1, characterized in that: The baffle plate (7) is provided with a mounting groove penetrating the left surface and the right surface, and the clamping plate (8) is embedded in the mounting groove and fixed by welding.
6. The crawler adjustment structure for the electric shovel travel mechanism according to claim 1, characterized in that: The material of the baffle plate (7) is Q345D.