Electric shovel tensioning wheel protection device

Abstract

The electric shovel tensioning wheel protection device comprises a circular plate, and a circular hole is formed in the surface of the circular plate; and a first positioning block, a second positioning block, a third positioning block and a fourth positioning block are fixedly mounted on the surface of the circular plate. The first positioning block, the second positioning block, the third positioning block and the fourth positioning block are right-angle triangular blocks. The long sides of the first positioning block, the second positioning block, the third positioning block and the fourth positioning block are of an arc-shaped structure, and the circle center of a circle formed by arcs of the first positioning block, the second positioning block, the third positioning block and the fourth positioning block coincides with the center of the round hole. The tensioning wheel limiting device has the advantages of being more reasonable in structural design, easy and convenient to machine and manufacture, low in invested production cost, convenient and fast to install and operate, safe and reliable to use and capable of protecting and limiting the tensioning wheel and preventing the tensioning shaft stop iron from jumping out to cause potential safety hazards.

Description

Technical Field

[0001] The utility model relates to the technical field of protection equipment for electric shovels, and particularly relates to a protection device for a tensioning wheel of an electric shovel. Background Art

[0002] An electric shovel is one of the main excavation equipment in ten-million-ton open-pit mines, with high productivity, high operation rate, and low operation cost. An electric shovel consists of a traveling device, a slewing device, a working device, a lubrication system, and a gas supply system. The bucket is the main component of the electric shovel, which directly bears the acting force of the excavated ore, so it wears greatly. The dipper stick is also one of the main components in the excavation process of the electric shovel. Its function is to connect and support the bucket and transmit the pushing force to the bucket. The bucket completes the action of excavating soil under the combined action of the pushing and lifting forces.

[0003] Among the mining excavation equipment, an electric shovel is an indispensable excavation equipment. During the long-term use of the tensioning wheel, due to the lack of a protection device, when it moves out of position during long-term use, the retaining iron of the tensioning shaft may pop out, causing equipment accidents.

[0004] Therefore, a structure is needed to solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a protection device for a tensioning wheel of an electric shovel, which has a more reasonable structural design, is simple to process and manufacture, has a low production cost, is convenient to install and operate, is safe and reliable in use, can protect and limit the tensioning wheel, and prevent the retaining iron of the tensioning shaft from popping out and causing potential safety hazards.

[0006] A protection device for a tensioning wheel of an electric shovel according to the utility model includes a circular plate, and circular holes are formed on the surface of the circular plate; a first positioning block, a second positioning block, a third positioning block, and a fourth positioning block are fixedly installed on the surface of the circular plate.

[0007] The round holes are opened on the surface of the circular plate. During the walking and twisting of the electric shovel, the circular plate can be sleeved on the tensioning shaft through the round holes. The first positioning block, the second positioning block, the third positioning block and the fourth positioning block can be embedded into the hip bone holes and fit with the inner wall of the hip bone holes. At this time, the circular plate fits the surface of the crawler plate. Occasionally, there will be friction between the tensioning wheel and the circular plate of the tensioning wheel. When acting on the circular plate, there will be a torque or couple that twists the circular plate, and the circular plate has a tendency to rotate; the first positioning block, the second positioning block, the third positioning block and the fourth positioning block embedded in the hip bone holes will limit the rotation of the tensioning wheel. After long-term operation, the first positioning block, the second positioning block, the third positioning block and the fourth positioning block will be continuously worn. When the wear reaches a certain degree, the first positioning block, the second positioning block, the third positioning block and the fourth positioning block will be broken. After the first positioning block, the second positioning block, the third positioning block and the fourth positioning block are broken, the circular plate and the tensioning wheel will rotate together when the electric shovel walks. Since the circular plate is circular in design and the size is the same on the circular ring surface, no matter how it rotates, the circular plate can always block the tensioning shaft stop iron, that is, the tensioning shaft stop iron will not move out towards the tensioning wheel, so equipment accidents will not occur. Maintenance personnel can be arranged for maintenance in an orderly manner, reducing the occurrence of safety accidents and the number of emergency repairs, effectively protecting the tensioning wheel of the electric shovel, extending its service life, ensuring the safety of operators, and facilitating maintenance.

[0008] The first positioning block, the second positioning block, the third positioning block and the fourth positioning block are right-angled triangular blocks.

[0009] In mining excavation equipment, the electric shovel is an indispensable excavation equipment. In the existing equipment in use, for the tensioning wheel, when it moves or the right-angled positioning block with an arc is worn during long-term use, it will cause the tensioning shaft stop iron to move out and cause equipment accidents.

[0010] Therefore, a protective device is needed to solve the safety accident caused by the movement of the tensioning shaft stop iron.

[0011] Setting the first positioning block, the second positioning block, the third positioning block and the fourth positioning block as right-angled triangular blocks can closely fit with the hip bone holes, prevent the tensioning wheel protection device from moving, and thus cannot play a good protective role for the tensioning wheel. During the walking of the electric shovel, the circular plate will not rotate with the tensioning wheel, protecting the hip bone holes and reducing wear, and can improve the service life of the tensioning wheel.

[0012] The long sides of the first positioning block, the second positioning block, the third positioning block and the fourth positioning block are arc-shaped structures, and the circle formed by the arc sides of the first positioning block, the second positioning block, the third positioning block and the fourth positioning block has the same center as the center of the round hole.

[0013] The long sides of the first positioning block, the second positioning block, the third positioning block, and the fourth positioning block are arc-shaped structures, which can further ensure that the first positioning block, the second positioning block, the third positioning block, and the fourth positioning block fit against the inner wall of the hip bone hole after being inserted. During the walking process of the electric shovel, it is ensured that the circular plate will not rotate with the tensioning wheel, protecting the hip bone hole and reducing wear.

[0014] The beneficial effects of the present utility model:

[0015] 1) The circular holes opened on the surface of the circular plate. During the walking and twisting processes of the electric shovel, the circular plate can be sleeved on the tensioning shaft through the circular holes. The first positioning block, the second positioning block, the third positioning block, and the fourth positioning block can be inserted into the hip bone hole and fit against the inner wall of the hip bone hole. At this time, the circular plate fits against the surface of the crawler plate. Occasionally, there will be a frictional force between the tensioning wheel and the circular plate of the tensioning wheel. When acting on the circular plate, a torque or couple for twisting the circular plate will be generated, and the circular plate has a tendency to rotate. The first positioning block, the second positioning block, the third positioning block, and the fourth positioning block inserted into the hip bone hole will limit the rotation of the tensioning wheel. After long-term operation, the first positioning block, the second positioning block, the third positioning block, and the fourth positioning block will continuously wear. When the wear reaches a certain degree, the first positioning block, the second positioning block, the third positioning block, and the fourth positioning block will break. After the first positioning block, the second positioning block, the third positioning block, and the fourth positioning block break, the circular plate and the tensioning wheel will rotate together when the electric shovel walks. Since the circular plate is circularly designed and the size is the same on the circular ring surface, no matter how it rotates, the circular plate can always block the tensioning shaft stop iron, that is, the tensioning shaft stop iron will not move out towards the tensioning wheel direction. Therefore, equipment accidents will not occur, and maintenance personnel can be arranged for maintenance in an orderly manner, reducing the occurrence of safety accidents and the number of emergency repairs. It can effectively protect the tensioning wheel of the electric shovel, extend its service life, ensure the safety of operators, and is convenient for maintenance.

[0016] 2) The first positioning block, the second positioning block, the third positioning block, and the fourth positioning block are set as right-angled triangular blocks, which can fit tightly against the hip bone hole, prevent the tensioning wheel protection device from moving, and thus fail to provide good protection for the tensioning wheel. During the walking process of the electric shovel, the circular plate will not rotate with the tensioning wheel, protecting the hip bone hole and reducing wear, and can improve the service life of the tensioning wheel.

[0017] 3) The long sides of the first positioning block, the second positioning block, the third positioning block, and the fourth positioning block are arc-shaped structures, which can further ensure that the first positioning block, the second positioning block, the third positioning block, and the fourth positioning block fit against the inner wall of the hip bone hole after being inserted. During the walking process of the electric shovel, it is ensured that the circular plate will not rotate with the tensioning wheel, protecting the hip bone hole and reducing wear.

[0018] 4) The structure of the protection device is more reasonable, with simple processing and manufacturing, low production cost, convenient installation and operation, safe and reliable use. It can protect and limit the tension wheel, prevent the safety hazard caused by the ejection of the tension shaft stop iron. It has been put into production and use, with good use effect, can effectively protect the tension wheel, improve the service life of the electric shovel, reduce the cost input, and is worthy of wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of the present invention;

[0020] Figure 2 is a side view of the present invention;

[0021] Figure 3 is a view of the present invention in use state.

[0022] In the figure: circular plate 1, first positioning block 2, second positioning block 3, third positioning block 4, round hole 5, fourth positioning block 6, tension shaft 7, crawler plate 8. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Embodiment 1.

[0024] The following will further describe the present invention in conjunction with the attached Figures 1-3 drawings.

[0025] The present invention includes a circular plate 1, a first positioning block 2, a second positioning block 3, a third positioning block 4, a round hole 5, and a fourth positioning block 6. The specific structure includes a circular plate 1, and a round hole 5 is provided on the surface of the circular plate 1; a first positioning block 2, a second positioning block 3, a third positioning block 4, and a fourth positioning block 6 are fixedly installed on the surface of the circular plate 1.

[0026] The first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 are right-angled triangular blocks.

[0027] The radius of the circular plate 1 is: 330 mm; the radius of the round hole 5 is: 115 mm; the thickness of the circular plate 1 is 20 mm; the distance between the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 is 230 mm, and the thickness is 40 mm.

[0028] Usage method: A circular hole 5 with a diameter of 115 mm is opened at the center position of the circular plate 1. After beveling the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6, they are welded to the surface of the circular plate 1, ensuring that the weld reinforcement after welding does not exceed the surface height of the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6, fully ensuring that the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 can be embedded into the hip bone hole and fit with the inner wall of the hip bone hole; for the circular hole 5 opened on the surface of the circular plate 1, during the walking and twisting of the electric shovel, the circular plate 1 can be sleeved on the tensioning shaft 7 through the circular hole 5. The first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 provided can be embedded into the hip bone hole and fit with the inner wall of the hip bone hole. At this time, the circular plate 1 fits the surface of the crawler plate 8. Tensioning wheels are arranged on both sides of the tensioning shaft 7. When there is friction between the tensioning wheels and the circular plate 1 of the tensioning wheel, when acting on the circular plate 1, there will be a moment or couple that twists the circular plate 1, and the circular plate 1 has a tendency to rotate; the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 embedded in the hip bone hole will limit the rotation of the tensioning wheel. During long-term operation, the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 will continuously wear. When worn to a certain extent, the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 will be broken. When the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 are broken, the circular plate 1 and the tensioning wheel will rotate together when the electric shovel walks. Due to the circular design of the circular plate 1, the size is the same on the circular ring surface. No matter how it rotates, the circular plate 1 can always block the tensioning shaft stop iron, that is, the tensioning shaft stop iron will not move out towards the tensioning wheel, so no equipment accident will occur.

[0029] Embodiment 2.

[0030] The utility model includes a circular plate 1, a first positioning block 2, a second positioning block 3, a third positioning block 4, a circular hole 5, and a fourth positioning block 6. The specific structure includes a circular plate 1, and a circular hole 5 is opened on the surface of the circular plate 1; the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 are fixedly installed on the surface of the circular plate 1.

[0031] The first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 are right-angled triangular blocks.

[0032] The long sides of the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 are arc-shaped structures, and the circle formed by the arc sides of the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 has a center that coincides with the center of the circular hole 5.

[0033] The radius of the said circular plate 1 is: 330 mm; the radius of the circular hole 5 is: 115 mm; the thickness of the circular plate 1 is 20 mm; the distance between the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 is 230 mm, the thickness is 40 mm, and the radian of the arc edge is 145 mm.

[0034] Usage method: A circular hole 5 with a diameter of 115 mm is opened at the center position of the circular plate 1. After the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 are beveled, they are welded to the surface of the circular plate 1, ensuring that the weld reinforcement after welding does not exceed the surface height of the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6. The circle formed by the arc edges of the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 has its center coinciding with the center of the circular hole 5, fully ensuring that the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 can be inserted into the hip bone hole and fit with the inner wall of the hip bone hole; the circular hole 5 opened on the surface of the circular plate 1 allows the circular plate 1 to be sleeved on the tensioning shaft 7 through the circular hole 5 during the walking and twisting of the electric shovel. The first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 can be inserted into the hip bone hole and fit with the inner wall of the hip bone hole. At this time, the circular plate 1 fits the surface of the crawler plate 8. Tensioning wheels are arranged on both sides of the tensioning shaft 7. When the tensioning wheels act on the circular plate 1, a frictional force will be generated between the tensioning wheels and the circular plate 1, resulting in a torque or couple that twists the circular plate 1, causing the circular plate 1 to have a tendency to rotate; the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 inserted into the hip bone hole will restrict the rotation of the tensioning wheels. During long-term operation, the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 will continuously wear. When the wear reaches a certain extent, the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 will break. After the first positioning block 2, the second positioning block 3, the third positioning block 4, and the fourth positioning block 6 break, the circular plate 1 and the tensioning wheels will rotate together when the electric shovel walks. Since the circular plate 1 is circular in design and has the same size on the circular ring surface, no matter how it rotates, the circular plate 1 can always block the tensioning shaft stop iron, that is, the tensioning shaft stop iron will not move towards the tensioning wheel direction, so no equipment accident will occur.

Claims

1. A tension wheel protection device for an electric shovel, characterized in that: It comprises a circular plate (1), a circular hole (5) being formed on the surface of the circular plate (1); a first positioning block (2), a second positioning block (3), a third positioning block (4) and a fourth positioning block (6) being fixedly mounted on the surface of the circular plate (1).

2. The electric shovel tension wheel protection device according to claim 1, characterized in that: The first positioning block (2), the second positioning block (3), the third positioning block (4) and the fourth positioning block (6) are right-angled triangle blocks.

3. The electric shovel tension wheel protection device according to claim 2, characterized in that: The long sides of the first positioning block (2), the second positioning block (3), the third positioning block (4) and the fourth positioning block (6) are arc-shaped structures, and the center of the circle formed by the extension lines of the arc-shaped sides of the first positioning block (2), the second positioning block (3), the third positioning block (4) and the fourth positioning block (6) coincides with the center of the circular hole (5).

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