A high-performance idler wheel

Abstract

This utility model relates to a high-performance idler wheel, belonging to the field of idler wheel technology. It includes a sleeve, on which a bearing body is fitted. A connecting ring seat is fitted on the bearing body, and both the sleeve and the connecting ring seat are fixedly connected to the bearing body. An idler wheel body is fitted on the connecting ring seat. A locking assembly is provided between the connecting ring seat and the idler wheel body for detachable connection of the idler wheel body and the connecting ring seat. A hydraulic expansion sleeve is provided between the bearing body and the idler wheel body, abutting against the outer ring wall of the bearing body and the inner ring wall of the idler wheel body. A hydraulic cavity is formed within the hydraulic expansion sleeve, and an oil delivery assembly is provided on the hydraulic expansion sleeve for connection to an external hydraulic oil pump. This application has the effect of reducing the replacement and maintenance costs of idler wheels.

Description

Technical Field

[0001] This utility model relates to the field of idler wheel technology, and in particular to a high-performance idler wheel. Background Technology

[0002] An idler gear is a gear train component that only serves a transitional function and does not change the transmission ratio. It is used to make the force on the gear train more reasonable or to meet the overall layout of the transmission system.

[0003] Currently, the idler wheel mainly consists of a sleeve, an inner bearing ring, an outer bearing ring, steel balls, a cover plate, and the idler wheel body. The sleeve, inner bearing ring, outer bearing ring, and idler wheel body are all installed between the cover plates, nested sequentially. The sleeve is welded to the inner bearing ring, and the outer bearing ring is welded to the idler wheel body. The steel balls roll between the inner and outer bearing rings.

[0004] However, since the idler wheel structure, consisting of the sleeve, inner bearing ring, outer bearing ring, steel balls, cover plate, and idler wheel body, is relatively fixed, it needs to be completely disassembled and reinstalled when it needs to be replaced or maintained, resulting in high costs for idler wheel replacement and maintenance. Utility Model Content

[0005] To reduce the cost of replacing and maintaining idler gears, this application provides a high-performance idler gear.

[0006] The high-performance idler wheel provided in this application adopts the following technical solution: A high-performance idler wheel includes a sleeve, a bearing body fitted onto the sleeve, a connecting ring seat fitted onto the bearing body, both the sleeve and the connecting ring seat being fixedly connected to the bearing body, an idler wheel body fitted onto the connecting ring seat, a locking assembly provided between the connecting ring seat and the idler wheel body, the locking assembly being used for detachably connecting the idler wheel body and the connecting ring seat, a hydraulic expansion sleeve provided between the bearing body and the idler wheel body, the hydraulic expansion sleeve being used to abut against the outer ring wall of the bearing body and the inner ring wall of the idler wheel body, a hydraulic cavity being formed within the hydraulic expansion sleeve, and an oil delivery assembly provided on the hydraulic expansion sleeve, the oil delivery assembly being used to connect to an external hydraulic oil pump.

[0007] By adopting the above technical solution, when assembling the idler wheel, the sleeve, bearing body, and connecting ring seat are first nested and welded together in sequence. Then, the hydraulic expansion sleeve and the idler wheel body are sequentially fitted onto the connecting ring seat. After that, the idler wheel body and the connecting ring seat are fixed by the locking assembly. Finally, the external hydraulic oil pump is connected to the hydraulic cavity through the oil delivery assembly. The external hydraulic oil pump injects hydraulic oil into the hydraulic cavity. The hydraulic expansion sleeve expands evenly under the pressure of the hydraulic oil. When the idler wheel body and the connecting ring seat are pressed together by the hydraulic expansion sleeve, the idler wheel assembly is completed. When replacing the idler wheel body, on the one hand, the idler wheel body and the connecting ring seat are loosened by the locking assembly, and on the other hand, the external hydraulic oil pump extracts the hydraulic oil from the hydraulic cavity through the oil delivery assembly, causing the hydraulic expansion sleeve to contract. Then the idler wheel body can be replaced. When the idler wheel needs to be replaced or maintained, the need to disassemble and reassemble the entire idler wheel is reduced. By replacing only the idler wheel body, the replacement and maintenance cost of the idler wheel is reduced.

[0008] Preferably, the locking assembly includes a first ring seat, a plurality of locking screws and a plurality of locking nuts. The connecting ring seat has a plurality of locking through holes, the locking screws pass through the locking through holes, and the locking nuts are threaded onto the locking screws. The locking nuts are used to abut against one side of the connecting ring seat, and the other side of the connecting ring seat is used to abut against the first ring seat. The first ring seat is fixedly connected to the end wall of the locking screws on the side facing the connecting ring seat. The idler wheel body is sleeved on the first ring seat and fixedly connected to the first ring seat.

[0009] By adopting the above technical solution, when the idler wheel body is sleeved on the hydraulic expansion sleeve, the locking screw passes through the locking through hole, and then the locking nut is screwed in, so that the connecting ring seat abuts against the locking nut and the first ring seat, thereby achieving the effect of fixing the idler wheel body and the connecting ring seat.

[0010] Preferably, the locking assembly further includes a second ring seat, on which a plurality of screw through holes are formed, the locking screw passes through the screw through holes, the second ring seat is used to abut against the side of the connecting ring seat away from the first ring seat, and the locking nut is used to abut against the side of the second ring seat away from the connecting ring seat.

[0011] By adopting the above technical solution, when the idler wheel body is sleeved on the hydraulic expansion sleeve, the locking screw passes through the locking through hole and the screw through hole in sequence, and then the locking nut is screwed in, so that the second ring seat and the first ring seat abut against the connecting ring seat, thereby achieving the effect of fixing the idler wheel body and the connecting ring seat.

[0012] Preferably, both the first and second ring seats have through slots for inserting oil delivery components.

[0013] By adopting the above technical solution, when the first ring seat and the second ring seat abut against the connecting ring seat, the idler wheel body and the connecting ring seat achieve a fixed effect, and at this time the oil delivery assembly is inserted into the clearance groove.

[0014] Preferably, a piston is slidably disposed within the hydraulic cavity, and the outer ring wall of the piston is provided with an inclined surface, which fits against the inner wall of the hydraulic cavity. The outer diameter of one end of the piston, which is closer to the oil delivery assembly, is larger than the outer diameter of the other end of the piston, which is farther away from the oil delivery assembly.

[0015] By adopting the above technical solution, when the external hydraulic oil pump injects hydraulic oil into the hydraulic cavity, the hydraulic oil pushes the piston to move into the hydraulic cavity, and then the hydraulic expansion sleeve expands evenly under the compression of the piston.

[0016] Preferably, the inner wall of the hydraulic cavity is provided with threaded grooves.

[0017] By adopting the above technical solution, when the piston moves, a small amount of hydraulic oil can flow through the threaded grooves to the contact surface between the outer wall of the piston and the inner wall of the hydraulic cavity, which facilitates smooth piston movement.

[0018] Preferably, the oil delivery assembly includes an input oil pipe, an input nozzle, and an input check valve. One end of the input oil pipe is connected to the hydraulic cavity, and the other end of the input oil pipe is connected to the input nozzle. The input check valve is installed on the input oil pipe.

[0019] By adopting the above technical solution, when oil is injected into the hydraulic cavity, the external hydraulic oil pump is connected to the input oil nozzle.

[0020] Preferably, the oil delivery assembly further includes an output oil pipe, an output nozzle, and an output check valve. One end of the output oil pipe is connected to the hydraulic cavity, and the other end of the output oil pipe is connected to the output nozzle. The output check valve is installed on the output oil pipe.

[0021] By adopting the above technical solution, when the hydraulic oil in the hydraulic cavity is extracted, the external hydraulic oil pump is connected to the output nozzle.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a sleeve, bearing body, connecting ring seat, idler wheel body, locking assembly, hydraulic expansion sleeve, hydraulic cavity and oil supply assembly, when the idler wheel needs to be replaced or maintained, the situation of disassembling and installing the entire idler wheel is reduced. By replacing only the idler wheel body, the replacement and maintenance cost of the idler wheel is reduced. 2. By setting a first ring seat, a locking screw, a locking nut, and a locking through hole, the idler wheel body is fixed to the connecting ring seat; 3. By setting up a piston and an inclined plane, the hydraulic expansion sleeve expands evenly under the compression of the piston. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of a high-performance idler wheel in an embodiment of this application.

[0024] Figure 2 This is a cross-sectional view illustrating the connection relationship between the connecting ring seat and the idler wheel body in the embodiments of this application.

[0025] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0026] Explanation of reference numerals in the attached drawings: 1. Sleeve; 2. Bearing body; 3. Connecting ring seat; 4. Idler wheel body; 5. Locking assembly; 51. First ring seat; 52. Second ring seat; 53. Locking screw; 531. Locking through hole; 532. Screw through hole; 54. Locking nut; 6. Hydraulic expansion sleeve; 61. Hydraulic cavity; 7. Oil supply assembly; 71. Input oil pipe; 711. Input oil nozzle; 712. Input check valve; 72. Output oil pipe; 721. Output oil nozzle; 722. Output check valve; 8. Clearance groove; 9. Piston; 91. Inclined surface; 92. Threaded groove. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0028] This application discloses a high-performance idler wheel. (Refer to...) Figure 1 and Figure 2The assembly includes a sleeve 1, a bearing body 2 fitted onto the sleeve 1, and a connecting ring seat 3 fitted onto the bearing body 2. Both the sleeve 1 and the connecting ring seat 3 are welded to the bearing body 2. An idler wheel body 4 is fitted onto the connecting ring seat 3, and a locking assembly 5 is provided between the connecting ring seat 3 and the idler wheel body 4 for detachable connection. A hydraulic expansion sleeve 6 is installed between the bearing body 2 and the idler wheel body 4, abutting against the outer ring wall of the bearing body 2 and the inner ring wall of the idler wheel body 4. A hydraulic cavity 61 is formed inside the hydraulic expansion sleeve 6, and an oil supply assembly 7 is installed on the hydraulic expansion sleeve 6 for connection to an external hydraulic oil pump. When assembling the idler wheel, the sleeve 1, bearing body 2, and connecting ring seat 3 are first nested and welded together in sequence, and then the hydraulic expansion sleeve 6 and the idler wheel body 4 are sequentially fitted onto the connecting ring seat 3. Then, the locking assembly 5 is used to fix the idler wheel body 4 to the connecting ring seat 3. Finally, the external hydraulic oil pump is connected to the hydraulic cavity 61 through the oil delivery assembly 7, and the external hydraulic oil pump injects hydraulic oil into the hydraulic cavity 61. The hydraulic expansion sleeve 6 expands evenly under the pressure of the hydraulic oil. When the idler wheel body 4 and the connecting ring seat 3 are pressed together by the hydraulic expansion sleeve 6, the idler wheel assembly is completed. When replacing the idler wheel body 4, on the one hand, the locking assembly 5 separates the idler wheel body 4 from the connecting ring seat 3, and on the other hand, the external hydraulic oil pump extracts the hydraulic oil from the hydraulic cavity 61 through the oil delivery assembly 7, causing the hydraulic expansion sleeve 6 to contract, after which the idler wheel body 4 can be replaced. When the idler wheel needs to be replaced or maintained, the need to completely disassemble and reassemble the idler wheel is reduced. By replacing only the idler wheel body 4, the replacement and maintenance costs of the idler wheel are reduced.

[0029] Reference Figure 1 and Figure 2 The locking assembly 5 includes a first ring seat 51, a second ring seat 52, a plurality of locking screws 53, and a plurality of locking nuts 54. An idler wheel body 4 is sleeved on the first ring seat 51 and welded to it. The first ring seat 51 is welded to one end of each locking screw 53. A connecting ring seat 3 is located between the first ring seat 51 and the second ring seat 52, with the opposing surfaces of the first and second ring seats 51 abutting against the connecting ring seat 3. A plurality of locking through holes 531 are formed through the connecting ring seat 3, and a plurality of screw through holes 532 are formed through the second ring seat 52. The locking screws 53 pass through the screw through holes 532 and the locking through holes 531. The locking nuts 54 are threaded onto the locking screws 53 and abut against the side of the second ring seat 52 away from the connecting ring seat 3. When the idler wheel body 4 is fitted onto the hydraulic expansion sleeve 6, the locking screw 53 passes through the locking through hole 531 and the screw through hole 532 in sequence, and then the locking nut 54 is screwed in, so that the second ring seat 52 and the first ring seat 51 abut against the connecting ring seat 3, thereby achieving the effect of fixing the idler wheel body 4 and the connecting ring seat 3.

[0030] Reference Figures 1 to 3Both the first ring seat 51 and the second ring seat 52 have through slots 8 for inserting the oil delivery assembly 7. When the first ring seat 51 and the second ring seat 52 abut against the connecting ring seat 3, the idler wheel body 4 and the connecting ring seat 3 are fixed together, and the oil delivery assembly 7 is inserted into the slots 8.

[0031] Reference Figures 1 to 3 A piston 9 is slidably mounted inside the hydraulic cavity 61. The outer ring wall of the piston 9 has an inclined surface 91. The outer diameter of one end of the piston 9, closer to the oil supply assembly 7, is larger than the outer diameter of the other end. The inclined surface 91 fits against the inner wall of the hydraulic cavity 61, and a threaded groove 92 is formed on the inner wall of the hydraulic cavity 61. When an external hydraulic pump injects hydraulic oil into the hydraulic cavity 61, the hydraulic oil pushes the piston 9 into the hydraulic cavity 61, causing the hydraulic expansion sleeve 6 to expand evenly under the pressure of the piston 9. As the piston 9 moves, a small amount of hydraulic oil can flow through the threaded groove 92 to the contact surface between the outer wall of the piston 9 and the inner wall of the hydraulic cavity 61, facilitating smooth movement of the piston 9.

[0032] Reference Figures 1 to 3 The oil supply assembly 7 includes an input oil pipe 71, an input nozzle 711, an input check valve 712, an output oil pipe 72, an output nozzle 721, and an output check valve 722. One end of the input oil pipe 71 is connected to the hydraulic chamber 61, and the other end is connected to the input nozzle 711. The input check valve 712 is installed on the input oil pipe 71. When oil is injected into the hydraulic chamber 61, an external hydraulic pump is connected to the input nozzle 711. One end of the output oil pipe 72 is connected to the hydraulic chamber 61, and the other end is connected to the output nozzle 721. The output check valve 722 is installed on the output oil pipe 72. When hydraulic oil is withdrawn from the hydraulic chamber 61, an external hydraulic pump is connected to the output nozzle 721.

[0033] The implementation principle of a high-performance idler wheel according to an embodiment of this application is as follows: When assembling the idler wheel, firstly, the sleeve 1, bearing body 2, and connecting ring seat 3 are nested together and welded. Then, the hydraulic expansion sleeve 6 and the idler wheel body 4 are sequentially fitted onto the connecting ring seat 3. After the idler wheel body 4 is fitted onto the hydraulic expansion sleeve 6, the locking screw 53 passes through the locking through hole 531 and the screw through hole 532 sequentially, and then the locking nut 54 is screwed in, causing the second ring seat 52 and the first ring seat 51 to abut against the connecting ring seat 3, thus achieving the effect of fixing the idler wheel body 4 to the connecting ring seat 3. Finally, an external hydraulic oil pump injects hydraulic oil into the hydraulic cavity 61, and the hydraulic expansion sleeve 6 expands uniformly under the pressure of the hydraulic oil. When the idler wheel body 4 and the connecting ring seat 3 are abutted by the hydraulic expansion sleeve 6, the idler wheel assembly is complete. When replacing the idler wheel body 4, the idler wheel body 4 is separated from the connecting ring seat 3 by disassembling the locking screw 53. Simultaneously, an external hydraulic pump extracts hydraulic oil from the hydraulic chamber 61, causing the hydraulic expansion sleeve 6 to contract. Afterward, the idler wheel body 4 can be replaced. This method reduces the need for complete disassembly and reassembly of the idler wheel when replacement or maintenance is required, lowering maintenance costs by replacing only the idler wheel body 4.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-performance idler wheel, comprising a sleeve, wherein a bearing body is sleeved on the sleeve, characterized in that: A connecting ring seat is fitted onto the bearing body. Both the sleeve and the connecting ring seat are fixedly connected to the bearing body. An idler wheel body is fitted onto the connecting ring seat. A locking assembly is provided between the connecting ring seat and the idler wheel body. The locking assembly is used to detachably connect the idler wheel body and the connecting ring seat. A hydraulic expansion sleeve is provided between the bearing body and the idler wheel body. The hydraulic expansion sleeve is used to abut against the outer ring wall of the bearing body and the inner ring wall of the idler wheel body. A hydraulic cavity is formed inside the hydraulic expansion sleeve. An oil delivery assembly is provided on the hydraulic expansion sleeve. The oil delivery assembly is used to connect to an external hydraulic oil pump.

2. The high-performance idler wheel according to claim 1, characterized in that: The locking assembly includes a first ring seat, a plurality of locking screws, and a plurality of locking nuts. A plurality of locking through holes are formed through the connecting ring seat. The locking screws pass through the locking through holes. The locking nuts are threaded onto the locking screws. The locking nuts are used to abut against one side of the connecting ring seat, and the other side of the connecting ring seat is used to abut against the first ring seat. The first ring seat is fixedly connected to the end wall of the locking screws on the side facing the connecting ring seat. The idler wheel body is sleeved on the first ring seat and is fixedly connected to the first ring seat.

3. A high-performance idler wheel according to claim 2, characterized in that: The locking assembly further includes a second ring seat, on which a plurality of screw through holes are formed. The locking screw passes through the screw through holes. The second ring seat is used to abut against the side of the connecting ring seat away from the first ring seat. The locking nut is used to abut against the side of the second ring seat away from the connecting ring seat.

4. A high-performance idler wheel according to claim 3, characterized in that: Both the first and second ring seats have through slots for inserting oil delivery components.

5. A high-performance idler wheel according to claim 1, characterized in that: A piston is slidably disposed within the hydraulic cavity. The outer ring wall of the piston is provided with an inclined surface, which fits against the inner wall of the hydraulic cavity. The outer diameter of one end of the piston, which is closer to the oil delivery assembly, is larger than the outer diameter of the other end of the piston, which is farther away from the oil delivery assembly.

6. A high-performance idler wheel according to claim 5, characterized in that: The inner wall of the hydraulic cavity is provided with threaded grooves.

7. A high-performance idler wheel according to claim 1, characterized in that: The oil delivery assembly includes an input oil pipe, an input nozzle, and an input check valve. One end of the input oil pipe is connected to the hydraulic cavity, and the other end of the input oil pipe is connected to the input nozzle. The input check valve is installed on the input oil pipe.

8. A high-performance idler wheel according to claim 7, characterized in that: The oil delivery assembly also includes an output oil pipe, an output nozzle, and an output check valve. One end of the output oil pipe is connected to the hydraulic cavity, and the other end of the output oil pipe is connected to the output nozzle. The output check valve is installed on the output oil pipe.

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