A wear-resistant bushing for tail wheel of bucket elevator

Abstract

The present invention provides a wear-resistant bushing for a bucket elevator tail wheel, which belongs to the field of wear-resistant bushings and includes a bushing seat, an outer bushing, an inner bushing and an L-shaped guide rail. The outer bushing is fixedly mounted on the bushing seat, the outer bushing is vertically arranged with the bushing seat, one end of the inner bushing is sleeved in the outer bushing, the inner bushing is sleeved on the external tail wheel shaft, and the L-shaped guide rail is fixedly mounted on the external tail wheel side door. The present invention is not easy to get stuck, so that the tail wheel can work normally, and the disassembly and assembly are simple. Even if the material falls in, it will automatically fall off due to the left and right lateral movement of the tail wheel when the equipment is running. With a modular structure, the wear-resistant sleeve is a wear part and needs to be replaced at ordinary times, while other parts are hardly damaged. The wear-resistant sleeve is fastened with bolts and can be directly taken out and replaced after the bolts are removed, without the need for knocking or jacking, and is very easy to disassemble and assemble.

Description

Technical Field

[0001] The invention relates to the field of wear-resistant bushings, in particular to a wear-resistant bushing for a tail wheel of a bucket elevator. Background Art

[0002] Bucket elevator is a continuous conveying machine that uses a series of buckets evenly fixed on an endless traction member to lift materials vertically. Bucket elevator uses a series of buckets fixed on a traction chain or belt to transport bulk materials upward in a vertical or nearly vertical direction. The tail wheel wear-resistant bushing is an important component of the bucket elevator. The existing tail wheel wear-resistant bushing adopts a conventional square guide rail and is positioned with the seat groove. After the material enters the matching position from the gap, it is very easy to get stuck, resulting in the tail wheel being unable to move up and down freely, thereby generating severe friction, causing the bushing to wear more, abnormal noise is loud, and the current is increased. After one side is stuck, the height of the two sides of the tail wheel is inconsistent, and there is even a risk of the tail wheel chain derailing. The seat groove is matched with the square guide rail, and there will be 3 contact surfaces, each of which has a gap. After running for a long time, the gap between the guide rail and the groove becomes larger, and the material is easier to enter, resulting in material jamming. After the material is stuck, the guide rail is difficult to remove and it is difficult to clean the jammed material. The wear-resistant sleeve is a wear part and needs to be replaced after normal wear. It adopts interference fit, which is tight and has no top thread hole, so it is difficult to disassemble and replace the wear-resistant sleeve. Therefore, a wear-resistant sleeve for the tail wheel of a bucket elevator is needed. Summary of the invention

[0003] The purpose of the present invention is to provide a bucket elevator tail wheel wear-resistant bushing to solve the existing technical problems of material jamming and difficulty in disassembly and assembly.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A bucket elevator tail wheel wear-resistant bushing comprises a bushing seat, an outer bushing, an inner bushing and an L-shaped guide rail, wherein the outer bushing is fixedly mounted on the bushing seat, the outer bushing is vertically arranged with the bushing seat, one end of the inner bushing is sleeved in the outer bushing, the inner bushing is sleeved on the external tail wheel shaft, and the L-shaped guide rail is fixedly mounted on the external tail wheel side door.

[0006] Furthermore, the bushing seat is arranged in a square shape, with a circular hole in the middle, both ends of the circular hole are transparent to form a cylindrical hole, and four symmetrical bushing seat bolt holes are arranged around the circular hole.

[0007] Furthermore, the outer bushing is provided with an outer bushing first cylinder and an outer bushing second cylinder, the outer bushing first cylinder and the outer bushing second cylinder are integrally formed, the outer bushing first cylinder and the outer bushing second cylinder are vertically arranged, the outer bushing first cylinder and the outer bushing second cylinder have the same inner diameter, the outer bushing second cylinder has a larger outer diameter than the outer bushing first cylinder, and the outer bushing first cylinder is provided with 4 symmetrical outer bushing bolt holes, which are the same size as the 4 bushing seat bolt holes on the bushing seat.

[0008] Furthermore, the outer bushing and the bushing seat are configured as detachable devices, and the outer bushing and the bushing seat are fixedly connected using hexagonal bolts.

[0009] Furthermore, the inner sleeve is provided with a first inner sleeve cylinder and a second inner sleeve cylinder, the first inner sleeve cylinder and the second inner sleeve cylinder are integrally formed, the first inner sleeve cylinder and the second inner sleeve cylinder are vertically arranged, the first inner sleeve cylinder and the second inner sleeve cylinder have the same inner diameter, the outer diameter of the second inner sleeve cylinder is larger than the outer diameter of the first inner sleeve cylinder, and a groove is arranged on the inner wall of the first inner sleeve cylinder, and the groove is square.

[0010] Further, the inner sleeve first cylinder of the inner sleeve is sleeved inside the outer sleeve first cylinder and the outer sleeve second cylinder of the outer sleeve, and the outer diameter of the inner sleeve first cylinder is smaller than the inner diameter of the outer sleeve first cylinder.

[0011] Furthermore, the L-shaped guide rail is provided with a guide rail body and a facade, the main body and the facade are arranged vertically, the width of the facade is larger than the width of the guide rail body, a guide rail hole is arranged on the facade, the L-shaped guide rail and the external tail wheel side door are arranged as detachable devices, and the L-shaped guide rail and the external tail wheel side door are fixedly connected using hexagonal head bolts.

[0012] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0013] The present invention is not easy to get stuck, ensuring that the tail wheel can work normally, and is easy to disassemble and assemble. Even if the material falls in, it will automatically fall off through the left and right lateral movement of the tail wheel when the equipment is running. The modular structure is adopted. The wear-resistant bushing is a wear part and needs to be replaced at ordinary times. Other parts are almost not damaged. The wear-resistant bushing is fastened with bolts. After the bolts are removed, it can be directly taken out and replaced without knocking or jacking. It is very easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the connection between the bushing seat and the outer bushing of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the bushing seat of the present invention;

[0016] Figure 3 is a top view of the bushing seat of the present invention;

[0017] Figure 4 is a side view of the bushing seat of the present invention;

[0018] Figure 5 It is a structural schematic diagram of the outer bushing of the present invention;

[0019] Figure 6 is a top view of the outer bushing of the present invention;

[0020] Figure 7 is a side view of the outer bushing of the present invention;

[0021] Figure 8 It is a structural schematic diagram of the inner liner of the present invention;

[0022] Fig. 9 is a top view of the inner liner of the present invention;

[0023] Fig.10 is a side view of the inner liner of the present invention;

[0024] Fig.11 It is a structural schematic diagram of the L-shaped guide rail of the present invention.

[0025] Numbers in the figure: 1-bushing seat, 1.1-bushing seat bolt hole, 1.2-circular hole, 2-outer bushing, 2.1-outer bushing first cylinder, 2.2-outer bushing second cylinder, 2.3-outer bushing bolt hole, 3-inner bushing, 3.1-inner bushing first cylinder, 3.2-inner bushing second cylinder, 3.3-groove, 4-L-type guide rail, 4.1-guide rail body, 4.2-vertical surface, 4.3-guide rail hole, 5-hexagonal bolt. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0027] like Figure 1-11 As shown, a bucket elevator tail wheel wear-resistant bushing includes a bushing seat 1, an outer bushing 2, an inner bushing 3 and an L-shaped guide rail 4. The outer bushing 2 is fixedly mounted on the bushing seat 1, the outer bushing 2 is vertically arranged with the bushing seat 1, one end of the inner bushing 3 is sleeved in the outer bushing 2, the inner bushing 3 is sleeved on the external tail wheel shaft, and the L-shaped guide rail 4 is fixedly mounted on the external tail wheel side door. After the inner bushing 3 is sleeved in the outer bushing 2, the bushing seat 1 is installed on the tail wheel shaft to ensure that the tail wheel can rotate freely, the inner bushing 3 rotates with the tail wheel, the outer bushing 2 and the bushing seat 1 are fixed, and the wear-resistant bushing is used to replace the bearing.

[0028] like Figure 2As shown, the bushing seat 1 is set in a square shape, with a circular hole 1.2 in the middle. Both ends of the circular hole 1.2 are transparent to form a cylindrical hole. Four symmetrical bushing seat bolt holes 1.1 are set around the circular hole 1.2. The inner diameter of the circular hole 1.2 is the same as the inner diameter of the first cylinder 2.1 of the outer bushing and the second cylinder 2.2 of the outer bushing. The bushing seat bolt hole 1.1 is the same size as the outer bushing bolt hole 2.3, ensuring that the two components can be fastened together. The surface of the bushing seat 1 is heat treated to a hardness of HRC41~46; burrs are removed and black anti-rust paint is sprayed. The groove of the original bushing seat is removed and directly replaced with a 30mm thin plate to reduce the side contact position. During installation, a 5mm gap is required between the bushing seat 1 and the L-shaped guide rail 4, so that the tail wheel can move horizontally for a certain distance. Even if material falls into the 5mm gap, it will eventually fall due to the horizontal movement of the tail wheel, so that the material will no longer be stuck and will not be stuck.

[0029] like Figure 5 As shown, the outer bushing 2 is provided with an outer bushing first cylinder 2.1 and an outer bushing second cylinder 2.2. The outer bushing first cylinder 2.1 and the outer bushing second cylinder 2.2 are integrally formed, the outer bushing first cylinder 2.1 and the outer bushing second cylinder 2.2 are vertically arranged, the outer bushing first cylinder 2.1 and the outer bushing second cylinder 2.2 have the same inner diameter, the outer bushing second cylinder 2.2 has an outer diameter 35 mm larger than the outer diameter of the outer bushing first cylinder 2.1, and the outer bushing second cylinder 2.2 is provided with 4 symmetrical outer bushing bolt holes 2.3, which are the same size as the 4 bushing seat bolt holes 1.1 on the bushing seat 1. The inner hole surface of the outer bushing 2 is heat treated with a hardness of HRC52-55 and a depth ≥2mm. The outer diameter of the second cylinder 2.2 of the outer bushing is 35mm larger than the outer diameter of the first cylinder 2.1 of the outer bushing in order to ensure that it will not be worn out during long-term operation and to prevent the inside of the tail wheel from moving. The outer bushing bolt hole 2.3 is provided to facilitate disassembly and assembly with the bushing seat 1 and save manpower.

[0030] like Figure 1 As shown, the outer bushing 2 and the bushing seat 1 are configured as detachable devices, and the outer bushing 2 and the bushing seat 1 are fixedly connected using M16*40, 8.8 grade hexagonal head bolts 5. The wear-resistant sleeve is a wear part and needs to be replaced after normal wear. It is easy to disassemble and assemble when replaced.

[0031] like Figure 8As shown, the inner sleeve 3 is provided with a first inner sleeve cylinder 3.1 and a second inner sleeve cylinder 3.2. The first inner sleeve cylinder 3.1 and the second inner sleeve cylinder 3.2 are integrally formed, the first inner sleeve cylinder 3.1 and the second inner sleeve cylinder 3.2 are vertically arranged, the first inner sleeve cylinder 3.1 and the second inner sleeve cylinder 3.2 have the same inner diameter, the outer diameter of the second inner sleeve cylinder 3.2 is 40 mm larger than the outer diameter of the first inner sleeve cylinder 3.1, and a groove 3.3 is arranged on the inner wall of the first inner sleeve cylinder 3.1, and the groove 3.3 is square. The outer surface of the inner bushing 3 is heat treated, with a hardness of HRC52-55 and a depth ≥2mm. The outer diameter of the second cylinder 3.2 of the inner bushing is 40mm larger than the outer diameter of the first cylinder 3.1 of the inner bushing in order to ensure that it will not be worn out during long-term operation and to prevent the inside of the tail wheel from moving. The inner bushing 3 is installed on the tail wheel shaft, and the inner bushing 3 rotates with the tail wheel. The outer bushing 2 and the bushing seat 1 are fixed, and the bearing is replaced by a wear-resistant bushing.

[0032] like Figure 5 and Figure 8 As shown, the inner sleeve first cylinder 3.1 of the inner sleeve 3 is sleeved in the outer sleeve first cylinder 2.1 and the outer sleeve second cylinder 2.2 of the outer sleeve 2. The outer diameter of the inner sleeve first cylinder 3.1 is 2mm smaller than the inner diameter of the outer sleeve first cylinder 2.1, ensuring that there is a 2mm gap between the inner sleeve 3 and the outer sleeve 2. The installed sleeve seat 1, outer sleeve 2 and inner sleeve 3 are installed on the tail wheel shaft. The outer sleeve 2 and the inner sleeve 3 have a 2mm gap to ensure that the tail wheel can rotate freely. The inner sleeve 3 rotates with the tail wheel, and the outer sleeve 2 and the sleeve seat 1 are fixed, and the bearing is replaced by a wear-resistant sleeve.

[0033] like Fig.11 As shown, the L-shaped guide rail 4 is provided with a guide rail body 4.1 and a facade 4.2. The body 4.1 is vertically arranged with the facade 4.2. The width of the facade 4.2 is 5 mm larger than the width of the guide rail body 4.1. A guide rail hole 4.3 is arranged on the facade 4.2. The L-shaped guide rail 4 and the external tail wheel side door are provided as detachable devices. The L-shaped guide rail 4 and the external tail wheel side door are fixedly connected and arranged with M16*40, 8.8 grade hexagonal head bolts 5. The L-shaped guide rail 4 is tempered and has a hardness of HRC26 to 33. The L-shaped guide rail 4 shall not have warping in the length direction, and the linear deviation shall be less than 1 mm. The tail wheel side door guide rail hole 4.3 is a long hole, which can adjust the position of the L-shaped guide rail 4. Even if the material is stuck, the hexagonal bolt 5 can be loosened to move the L-shaped guide rail 4 to make the material fall. The main function of the guide rail of the original tail wheel bushing is to position the tail wheel to prevent it from moving laterally and swinging left and right, so that the tail wheel can slide up and down in a fixed position; changing the square guide rail to an L-shaped guide rail 4 and installing it on both sides can also prevent the tail wheel from moving outward.

[0034] Installation requirements:

[0035] The L-shaped guide rail is installed on the tail wheel side door, the inner bushing is installed on the tail wheel shaft, the outer bushing is fastened to the bushing seat by hexagonal bolts, and then the bushing seat (connected with the inner bushing) is installed on the tail wheel shaft (there is a 2mm gap between the inner and outer bushings to ensure that the tail wheel can rotate freely, the inner bushing rotates with the tail wheel, and the outer bushing and bushing seat are fixed. Wear-resistant bushings are used instead of bearings).

[0036] 1. The main function of the guide rail of the original tail wheel bushing is to position the tail wheel to prevent it from lateral movement and left and right swing, so that the tail wheel can slide up and down in a fixed position; changing the square guide rail to an L-shaped guide rail, after installing it on both sides, it can also prevent the tail wheel from moving outward. The inner bushing and the outer bushing are set with two large steps (the inner bushing is 40mm thick and the outer bushing is 35mm thick), which can ensure that it will not wear out during long-term operation and prevent the tail wheel from moving inward;

[0037] 2. Remove the groove of the bushing seat and directly replace it with a 30mm thin plate to reduce the side contact position. During installation, a 5mm gap is required between the seat and the L-shaped guide rail to allow the tail wheel to move laterally a certain distance. Even if material falls into the 5mm gap, it will eventually fall due to the lateral left and right movement of the tail wheel, so that the material will no longer be stuck and it will not get stuck.

[0038] 3. The guide rail hole on the tail wheel side door is a long hole, and the position of the guide rail can be adjusted. Even if the material is stuck, the bolts can be loosened and the guide rail can be moved to make the material fall.

[0039] 4. The outer bushing is connected to the bushing seat with hexagonal bolts, which is easy to disassemble and assemble when replaced.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bucket elevator tail wheel wear-resistant bushing, characterized in that: The utility model comprises a bushing seat (1), an outer bushing (2), an inner bushing (3) and an L-shaped guide rail (4), wherein the outer bushing (2) is fixedly mounted on the bushing seat (1), the outer bushing (2) and the bushing seat (1) are arranged vertically, one end of the inner bushing (3) is sleeved in the outer bushing (2), the inner bushing (3) is sleeved on the external tail wheel shaft, and the L-shaped guide rail (4) is fixedly mounted on the external tail wheel side door; The bushing seat (1) is arranged in a square shape, with a circular hole (1.2) arranged in the middle, both ends of the circular hole (1.2) are transparent to form a cylindrical hole, and four symmetrical bushing seat bolt holes (1.1) are arranged around the circular hole (1.2); The outer bushing (2) is provided with an outer bushing first cylinder (2.1) and an outer bushing second cylinder (2.2); the outer bushing first cylinder (2.1) and the outer bushing second cylinder (2.2) are integrally formed and arranged; the outer bushing first cylinder (2.1) and the outer bushing second cylinder (2.2) are arranged vertically; the outer bushing first cylinder (2.1) and the outer bushing second cylinder (2.2) have the same inner diameter; the outer bushing second cylinder (2.2) has a larger outer diameter than the outer bushing first cylinder (2.1); and the outer bushing second cylinder (2.2) is provided with four symmetrical outer bushing bolt holes (2.3) which are the same in size as the four bushing seat bolt holes (1.1) on the bushing seat (1); The outer bushing (2) and the bushing seat (1) are configured as detachable devices, and the outer bushing (2) and the bushing seat (1) are fixedly connected using hexagonal bolts (5); The inner sleeve (3) is provided with a first inner sleeve cylinder (3.1) and a second inner sleeve cylinder (3.2); the first inner sleeve cylinder (3.1) and the second inner sleeve cylinder (3.2) are integrally formed and arranged; the first inner sleeve cylinder (3.1) and the second inner sleeve cylinder (3.2) are arranged vertically; the first inner sleeve cylinder (3.1) and the second inner sleeve cylinder (3.2) have the same inner diameter; the second inner sleeve cylinder (3.2) has a larger outer diameter than the first inner sleeve cylinder (3.1); and a groove is arranged on the inner wall of the first inner sleeve cylinder (3.1); the groove is in a square shape; The inner sleeve first cylinder (3.1) of the inner sleeve (3) is sleeved inside the outer sleeve first cylinder (2.1) and the outer sleeve second cylinder (2.2) of the outer sleeve (2), and the outer diameter of the inner sleeve first cylinder (3.1) is smaller than the inner diameter of the outer sleeve first cylinder (2.1); The L-shaped guide rail (4) is provided with a guide rail body (4.1) and a vertical surface (4.2), the body (4.1) and the vertical surface (4.2) are arranged vertically, the width of the vertical surface (4.2) is larger than the width of the guide rail body (4.1), and a guide rail hole (4.3) is arranged on the vertical surface (4.2), the L-shaped guide rail (4) and the external tail wheel side door are arranged as a detachable device, and the L-shaped guide rail (4) and the external tail wheel side door are fixedly connected and arranged using a hexagonal bolt (5).

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