Lubricating structure of high-speed wrist machine

Abstract

The utility model discloses a high -speed wrist -bending machine lubricating structure belongs to wrist -bending machine lubricating technical field, including the lower axle assembly and the arm embracing sub -assembly in the lower axle cavity, the lower axle assembly drive arm embracing sub -assembly, be equipped with the oil supply component on the lower axle assembly with arm embracing sub -assembly, the oil supply component includes the first oil supply pipe of access lower axle assembly and place the second oil supply pipe of arm embracing sub -assembly. The lower axle assembly and arm embracing sub -assembly all are located inside the lower axle cavity, and the lower axle assembly and arm embracing sub -assembly work together and realize accurate push cloth and cloth's tension adjustment, and this scheme is through the first oil supply pipe and the second oil supply pipe of oil supply component respectively to the lower axle assembly and arm embracing sub -assembly carry out oil lubrication, reduce the wearing and tearing of lower axle assembly and arm embracing sub -assembly's spare part, improve the performance and life of wrist -bending machine.

Description

Technical Field

[0001] This utility model relates to a lubrication structure, and more specifically, to a lubrication structure for a high-speed wrist flexor. Background Technology

[0002] The existing wrist bender uses a passive lubrication method where the lower shaft cavity is partially immersed in oil, leaving some parts of the cavity unlubricated. During operation, these parts experience slow wear. At high speeds, the wear intensifies due to heat, affecting the stability of the bender's movement and potentially causing transmission jamming due to iron dust.

[0003] For example, Chinese Patent Publication No. CN222684950U, published on March 28, 2025, discloses a utility model entitled "A Crankarm Hemming and Sewing Machine with an Oil Supply Structure." This application discloses a lubrication structure for a crankarm sewing machine, including a base with a lower shaft device and an upper shaft device connected by a synchronous belt; an oil box installed below the base for storing lubricating oil; a crankarm oil supply device located within the oil box for lubricating the lower shaft device; a sewing head oil supply device located within the oil box for lubricating the upper shaft device; and a transmission device installed within the base for transmitting power from the upper shaft device to the crankarm and sewing head oil supply devices, thus enabling the crankarm and sewing head oil supply devices to operate and ensuring stable and sufficient lubrication for each component, reducing wear on parts. However, this solution cannot provide oil lubrication for the arm assembly in the lower shaft cavity, leaving some parts without lubrication, which makes them prone to wear and reduces their lifespan. Utility Model Content

[0004] This invention overcomes the problem of ineffective lubrication of some structures in the lower shaft cavity of a wrist bend machine, and provides a lubrication structure for a high-speed wrist bend machine. This solution can effectively lubricate all structures in the lower shaft cavity of the wrist bend machine, reduce wear on parts, and improve the performance and lifespan of the wrist bend machine.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a lubrication structure for a high-speed wrist-cranking machine, including a lower shaft assembly and a retaining arm assembly disposed within the lower shaft cavity. The lower shaft assembly drives the retaining arm assembly. Both the lower shaft assembly and the retaining arm assembly are equipped with an oil supply assembly, which includes a first oil supply pipe connected to the lower shaft assembly and a second oil supply pipe disposed within the retaining arm assembly. Both the lower shaft assembly and the retaining arm assembly are located inside the lower shaft cavity. The lower shaft assembly and the retaining arm assembly work together to achieve precise fabric pushing and fabric tension adjustment. The first and second oil supply pipes of the oil supply assembly respectively lubricate the lower shaft assembly and the retaining arm assembly, reducing wear on the components of the lower shaft assembly and the retaining arm assembly, and improving the performance and service life of the wrist-cranking machine.

[0006] Preferably, the lower shaft assembly includes a lower shaft, which has an axially hollow portion at one end near the arm assembly and a first oil inlet at its end. The first oil supply pipe is connected to the first oil inlet. The first oil inlet guides the oil output from the first oil pipe into the interior of the lower shaft, thereby lubricating the structure on the lower shaft.

[0007] Preferably, the lower shaft has a radially arranged first oil outlet hole located in the hollow portion, the first oil outlet hole communicating with the hollow portion, and the lower shaft has a transmission component for driving the arm assembly located in the hollow portion. The first oil outlet hole can guide the oil in the hollow portion of the lower shaft to the transmission component, thereby lubricating the transmission component.

[0008] Preferably, the clutch arm assembly includes a clutch crank and a gear holder arranged in parallel. The second oil supply pipe includes an oil outlet section suspended between the clutch crank and the gear holder. The oil outlet section has a second oil outlet hole and a third oil outlet hole facing the clutch crank and the gear holder, respectively. The top of the clutch crank and the gear holder are respectively provided with a first oil receiving part and a second oil receiving part. The oil outlet holes on both sides of the oil outlet section of the second oil supply pipe can deliver oil to the oil receiving parts on both sides of the clutch crank and the gear holder, thereby achieving oil supply lubrication.

[0009] Preferably, the arm assembly further includes a clutch shaft seat, which is located on the side of the gear frame away from the clutch crank, and a third oil receiving part is provided on the top of the clutch shaft seat. The third oil receiving part can collect the oil output from the second oil supply pipe and lubricate the clutch shaft seat.

[0010] Preferably, the oil supply assembly includes a three-way valve, the output end of which is connected to the first oil supply pipe and the second oil supply pipe, and the input end of which is provided with an oil inlet pipe. After oil is introduced into the oil inlet pipe, it is output to the first oil supply pipe and the second oil supply pipe respectively through the three-way valve, thereby realizing the oil supply and lubrication of the lower shaft assembly and the retaining arm assembly.

[0011] Preferably, the oil supply assembly further includes a return oil pipe, and a drive pump is provided between the oil supply pipe and the return oil pipe. The drive pump provides power to the oil supply assembly, enabling the oil to circulate.

[0012] Preferably, an oil return groove is provided in the lower shaft cavity at the connection between the lower shaft assembly and the arm assembly, and the input end of the oil return pipe is located in the oil return groove. The oil return groove can collect and return the oil output from the oil supply assembly to the lubrication part, and resupply the oil supply assembly.

[0013] Preferably, the system also includes an upper shaft assembly. The drive pump is a gear pump. The upper shaft assembly includes a drive shaft and a driven shaft, which are connected by a belt drive. The driven shaft has a worm gear portion that meshes with the drive shaft of the drive pump. The movement of the upper shaft assembly drives the drive pump to move, providing power to the oil supply assembly.

[0014] Preferably, the drive pump is an electronic pump. Using an electronic pump provides power to the oil supply assembly while simplifying the internal structure of the wrist flexor.

[0015] Compared with the prior art, the beneficial effects of this utility model are: (1) without increasing the size of the existing wrist flexor, a circulating lubrication system is added to achieve lubrication of all parts of the lower shaft cavity; (2) the performance of the wrist flexor is effectively improved and the service life of the equipment is increased; (3) the structure design is simple, the cost is low, it is easy to implement, and it has good practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the arm support assembly of this utility model.

[0019] Figure 4 This is a schematic diagram of the oil supply component of this utility model.

[0020] Figure 5 This is a structural schematic diagram of one side of the arm assembly of this utility model.

[0021] Figure 6 This is a schematic diagram of the other side of the arm assembly of this utility model.

[0022] Figure 7 This is an exploded view of the lower shaft assembly of this utility model.

[0023] In the picture: 1. Lower shaft assembly; 1.1. Lower shaft; 1.11. First oil inlet; 1.12. First oil outlet; 1.2. Transmission assembly; 1.21. Front shaft sleeve; 1.211. Connecting hole; 1.212. Oil passage hole; 1.22. Feeding eccentric wheel; 1.23. Feeding cam; 1.24. Tooth lifting eccentric wheel; 1.25. Clutch slider; 1.26. Middle shaft sleeve; 1.27. Clutch frame; 2. Clutch arm assembly, 2.1. Clutch crank, 2.11. First oil inlet, 2.2. Gear holder, 2.21. Second oil inlet, 2.3. Clutch shaft seat, 2.31. Third oil inlet; 3. Oil supply assembly, 3.1. First oil supply pipe, 3.2. Second oil supply pipe, 3.21. Oil outlet section, 3.22. Second oil outlet hole, 3.23. Third oil outlet hole, 3.3. Three-way valve, 3.4. Oil inlet pipe, 3.5. Oil return pipe, 3.6. Drive pump, 3.61. Drive shaft; 4. Bottom shell, 4.1. Lower shaft cavity, 4.2. Oil return groove; 5. Upper shaft assembly, 5.1. Drive shaft, 5.2. Driven shaft, 5.21. Worm gear, 5.3. Belt. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0025] Example 1: As Figures 1 to 7 The diagram illustrates a lubrication structure for a high-speed wrist-cranking machine. The wrist-cranking machine includes a base shell 4, on which a lower shaft cavity 4.1 is provided. A lower shaft assembly 1 and a retaining arm assembly 2 are arranged inside the lower shaft cavity 4. The lower shaft assembly 1 and the retaining arm assembly 2 are arranged perpendicularly to each other. An oil supply assembly 3 is also arranged on the base shell 4, on the lower shaft assembly 1 and the retaining arm assembly 2, to supply oil to the lower shaft assembly 1 and the retaining arm assembly 2, thereby achieving oil supply lubrication for the components on the lower shaft assembly 1 and the retaining arm assembly 2, and thus ensuring lubrication of all parts inside the lower shaft cavity 4.1.

[0026] Specifically, the lower shaft assembly 1 includes a lower shaft 1.1, which is a rotating shaft structure. A transmission assembly 1.2 is arranged on the lower shaft 1.1. The lower shaft assembly 1 and the arm-holding assembly 2 transmit motion through the transmission assembly 1.2. That is, when the lower shaft assembly 1 moves, the arm-holding assembly 2 is driven to move through the transmission assembly 1.2. The lower shaft assembly 1 and the arm-holding assembly 2 are used to achieve precise pushing and tension adjustment of the fabric on the wrist-grip machine. The transmission assembly 1.2 is located on the side of the lower shaft assembly 1 closest to the arm-holding assembly 2.

[0027] Furthermore, the oil supply assembly 3 includes a return oil pipe 3.5, an inlet oil pipe 3.4, a three-way valve 3.3, a first oil supply pipe 3.1, a second oil supply pipe 3.2, and a drive pump 3.6. Specifically, the drive pump 3.6 is arranged on the bottom shell 4. The drive pump 3.6 can be an electric pump. The return oil pipe 3.5 and the inlet oil pipe 3.4 are respectively provided at both ends of the drive pump 3.6. An oil groove structure is arranged on the bottom shell 4 and below the lower shaft 1.1. The return oil pipe 3.5 and the inlet oil pipe 3.4 are both arranged in the oil groove. An oil return groove 4.2 is provided in the oil groove of the lower shaft cavity 4.1 and near the side of the arm assembly 2. The oil return groove 4.2 is a countersunk hole design in the oil groove. The input end of the return oil pipe 3.5 is arranged in the oil return groove 4.2. The oil return groove 4.2 can collect and return the lubricating oil on the arm assembly 2 and the lower shaft assembly 1 and resupply it to the return oil pipe 3.5. The output end of the return oil pipe 3.5 is connected to the drive pump 3.6, the output end of the drive pump 3.6 is connected to the input end of the inlet oil pipe 3.4, and the output end of the inlet oil pipe 3.4 is connected to the input end of the three-way valve 3.3. The three-way valve 3.3 has two output ports, and the two output ports of the three-way valve 3.3 are respectively connected to the first oil supply pipe 3.1 and the second oil supply pipe 3.2. The output end of the first oil supply pipe 3.1 is arranged on the lower shaft assembly 1, and the output end of the second oil supply pipe 3.2 is arranged on the arm assembly 2. When the drive pump 3.6 is working, it draws lubricating oil from the return oil tank 4.2 through the return oil pipe 3.5, and then pumps it to the inlet oil pipe 3.4. The inlet oil pipe 3.4 delivers the oil to the three-way valve 3.3, and supplies oil for lubrication to the lower shaft assembly 1 and the arm assembly 2 through the first oil supply pipe 3.1 and the second oil supply pipe 3.2 respectively. After passing through the lower shaft assembly 1 and the arm assembly 2, the lubricating oil finally flows back to the return oil tank 4.2, forming an oil circulation. This achieves full lubrication of the lower shaft assembly 1 and the arm assembly 2 in the lower shaft cavity 4.1, improving the performance of the wrist cranking machine, reducing component wear, and increasing service life.

[0028] Furthermore, such as Figure 3 and Figure 7 As shown, a transmission assembly 1.2 is provided at one end of the lower shaft assembly 1 near the arm assembly 2. An axial hollow portion is provided at one end of the lower shaft 1.1 near the arm assembly 2. The hollow portion is a hollow structure inside the lower shaft 1.1, and its length is adapted to the overall length of the transmission assembly 1.2 arranged on the lower shaft 1.1. A first oil inlet hole 1.11 is provided at the end of the lower shaft 1.1 for oil to enter the hollow portion. Several first oil outlet holes 1.12 are also provided at the hollow portion of the lower shaft 1.1, and the first oil outlet holes 1.11 and the first oil inlet holes 1.12 are connected through the hollow portion inside the lower shaft 1.1.

[0029] Furthermore, the transmission assembly 1.2 includes a front axle sleeve 1.21, a feeding eccentric wheel 1.22, a feeding cam 1.23, a tooth lifting eccentric wheel 1.24, a clutch slider 1.25, a central axle sleeve 1.26, and a clutch frame 1.27, etc. The functions of each component of the transmission assembly 1.2 are all existing technologies or common knowledge, and will not be described here. The front axle sleeve 1.21 is arranged in the circular mounting hole of the clutch bracket 1.27. A radially arranged connecting hole 1.211 is provided on the circumference of the front axle sleeve 1.21. An oil passage hole 1.212 is also provided inside the front axle sleeve 1.21. The direction of the oil passage hole 1.212 is parallel to the axial direction of the lower shaft 1.1. The position of the oil passage hole 1.212 output port corresponds to the position of the first oil inlet hole 1.11 of the lower shaft 1.1. The first oil supply pipe 3.1 of the oil supply assembly 3 is inserted into the connecting hole 1.211. When the first oil supply pipe 3.1 supplies oil, the oil enters the oil passage hole 1.212 through the connecting hole 1.211, and then flows into the first oil inlet hole 1.11 of the lower shaft 1.1 and then into the hollow part of the lower shaft 1.1. During the rotation of the lower shaft 1.1, the oil flows into the various components of the transmission assembly 1.2 through different first oil outlet holes 1.11, thereby achieving the lubrication of the transmission assembly 1.2. Radially arranged oil hole structures are provided on the feeding eccentric wheel 1.22, feeding cam 1.23, tooth lifting eccentric wheel 1.24, clutch slider 1.25 and clutch frame 1.27 to facilitate the return of lubricating oil (thrown out during rotation) and re-entering the return oil groove 4.2.

[0030] Furthermore, the arm assembly 2 includes a clutch crank 2.1, a gear bracket 2.2, and a clutch shaft seat 2.3, etc. The clutch crank 2.1, gear bracket 2.2, and clutch shaft seat 2.3 are arranged in parallel. The drive connection relationship between the arm assembly 2 and the transmission assembly 1.2 is existing technology or common knowledge, and will not be described in detail here. The second oil supply pipe 3.2 of the oil supply assembly 3 is arranged between the clutch crank 2.1 and the gear carrier 2.2. The second oil supply pipe 3.2 includes an oil outlet section 3.21. After exiting the three-way valve 3.3, the second oil supply pipe 3.2 needs to bypass the transmission assembly 1.2 so that the oil outlet section 3.21 is suspended on the arm assembly 2. The end of the oil outlet section 3.21 is a closed structure. A second oil outlet hole 3.22 and a third oil outlet hole 3.23 are arranged on the oil outlet section 3.21. The second oil outlet hole 3.22 faces the clutch crank 2.1, and the third oil outlet hole 3.23 faces the gear carrier 2.2 and the clutch shaft seat 2.3. The overall height of the oil outlet section 3.21 and the positions of the second oil outlet hole 3.22 and the third oil outlet hole 3.23 are slightly higher than the positions of the clutch crank 2.1 and the gear carrier 2.2. The clutch shaft seat 2.3 is the lowest position. A first oil inlet 2.11 is provided at the top of the clutch crank 2.1. The first oil inlet 2.11 is an oil hole structure. A crank, ball joint assembly, and other structures are rotatably connected to the clutch crank 2.1. The first oil inlet 2.11 can deliver the oil output from the second oil supply pipe 3.2 to the above-mentioned structures, achieving lubrication of the various structures on the clutch crank 2.1. A second oil inlet 2.21 is provided at the top of the gear frame 2.2. The second oil inlet 2.21 is a long strip-shaped oil groove structure at the top of the gear frame 2.2, which can supply oil lubrication to the structures connected to the gear frame 2.2. A third oil inlet 2.31 is provided at the top of the clutch shaft seat 2.3. The third oil inlet 2.31 is an oil hole structure, which can guide oil into the interior of the clutch shaft seat 2.3, ensuring lubrication between the clutch shaft seat 2.3 and the shaft. In other words, when the second oil supply pipe 3.2 supplies oil, the oil flows through the second oil outlet 3.22 at the oil outlet section 3.21 into the first oil receiving part 2.11 on the clutch crank 2.1, and through the third oil outlet 3.23 at the oil outlet section 3.21 into the second oil receiving part 2.21 on the gear frame 2.2 and the third oil receiving part 2.31 on the clutch shaft seat 2.3, thereby achieving lubrication of the various components on the clutch arm assembly 2.

[0031] Example 2: As Figures 1 to 7The diagram illustrates a lubrication structure for a high-speed wrist-cranking machine. The wrist-cranking machine includes a base shell 4, on which a lower shaft cavity 4.1 is provided. A lower shaft assembly 1 and a retaining arm assembly 2 are arranged inside the lower shaft cavity 4. The lower shaft assembly 1 and the retaining arm assembly 2 are arranged perpendicularly to each other. An oil supply assembly 3 and an upper shaft assembly 5 are also arranged on the base shell 4. The upper shaft assembly 5 can drive the drive pump 3.6 in the oil supply assembly 3 to operate, providing power to the oil supply assembly 3. The oil supply assembly 3 is arranged on the lower shaft assembly 1 and the retaining arm assembly 2 to supply oil to the lower shaft assembly 1 and the retaining arm assembly 2, thereby achieving oil supply and lubrication of the components on the lower shaft assembly 1 and the retaining arm assembly 2, and thus ensuring the lubrication of all parts in the lower shaft cavity 4.1.

[0032] Specifically, the lower shaft assembly 1 includes a lower shaft 1.1, which is a rotating shaft structure. A transmission assembly 1.2 is arranged on the lower shaft 1.1. The lower shaft assembly 1 and the arm-holding assembly 2 transmit motion through the transmission assembly 1.2. That is, when the lower shaft assembly 1 moves, the arm-holding assembly 2 is driven to move through the transmission assembly 1.2. The lower shaft assembly 1 and the arm-holding assembly 2 are used to achieve precise pushing and tension adjustment of the fabric on the wrist-grip machine. The transmission assembly 1.2 is located on the side of the lower shaft assembly 1 closest to the arm-holding assembly 2.

[0033] The upper shaft assembly 5 includes a drive shaft 5.1, a driven shaft 5.2, and a belt 5.3 connecting the drive shaft 5.1 and the driven shaft 5.2. Specifically, pulley structures are provided at the ends of the drive shaft 5.1 and the driven shaft 5.2, and the belt 5.3 is wound around the pulleys. The rotation of the drive shaft 5.1 can drive the rotation of the driven shaft 5.2. In this embodiment, the upper shaft assembly 5 not only enables the needle on the wrist-wrist machine to pierce the fabric and form a stitch track, but also provides power to the oil supply assembly 3.

[0034] Specifically, a worm gear portion 5.21 is arranged on the driven shaft 5.1, and the drive pump 3.6 in the oil supply assembly 3 is located at the position of the worm gear portion 5.21 on the driven shaft 5.2. The drive pump 3.6 is an internal gear pump, and the drive shaft 3.61 of the drive pump 3.6 meshes with the worm gear portion 5.21 on the driven shaft 5.2. When the drive shaft 5.1 drives the driven shaft 5.2 to rotate, the worm gear portion 5.21 on the driven shaft 5.2 drives the drive shaft 3.6 of the drive pump 3.6 to rotate, thereby enabling the drive pump 3.6 to work.

[0035] Furthermore, the oil supply assembly 3 includes a return oil pipe 3.5, an inlet oil pipe 3.4, a three-way valve 3.3, a first oil supply pipe 3.1, a second oil supply pipe 3.2, and a drive pump 3.6. Specifically, the drive pump 3.6 is arranged on the bottom shell 4, with a return oil pipe 3.5 and an inlet oil pipe 3.4 respectively provided at both ends of the drive pump 3.6; an oil groove structure is arranged on the bottom shell 4 and below the lower shaft 1.1, with both the return oil pipe 3.5 and the inlet oil pipe 3.4 arranged in the oil groove. An oil return groove 4.2 is provided in the oil groove of the lower shaft cavity 4.1 and near the side of the arm assembly 2. The oil return groove 4.2 has a countersunk hole design, and the input end of the return oil pipe 3.5 is arranged in the oil return groove 4.2. The oil return groove 4.2 can collect and return the lubricating oil on the arm assembly 2 and the lower shaft assembly 1 and resupply it to the return oil pipe 3.5. The output end of the return oil pipe 3.5 is connected to the drive pump 3.6, the output end of the drive pump 3.6 is connected to the input end of the inlet oil pipe 3.4, and the output end of the inlet oil pipe 3.4 is connected to the input end of the three-way valve 3.3. The three-way valve 3.3 has two output ports, and the two output ports of the three-way valve 3.3 are respectively connected to the first oil supply pipe 3.1 and the second oil supply pipe 3.2. The output end of the first oil supply pipe 3.1 is arranged on the lower shaft assembly 1, and the output end of the second oil supply pipe 3.2 is arranged on the arm assembly 2. When the drive pump 3.6 is working, it draws lubricating oil from the return oil tank 4.2 through the return oil pipe 3.5, and then pumps it to the inlet oil pipe 3.4. The inlet oil pipe 3.4 delivers the oil to the three-way valve 3.3, and supplies oil for lubrication to the lower shaft assembly 1 and the arm assembly 2 through the first oil supply pipe 3.1 and the second oil supply pipe 3.2 respectively. After passing through the lower shaft assembly 1 and the arm assembly 2, the lubricating oil finally flows back to the return oil tank 4.2, forming an oil circulation. This achieves full lubrication of the lower shaft assembly 1 and the arm assembly 2 in the lower shaft cavity 4.1, improving the performance of the wrist cranking machine, reducing component wear, and increasing service life.

[0036] Furthermore, such as Figure 3 and Figure 7 As shown, a transmission assembly 1.2 is provided at one end of the lower shaft assembly 1 near the arm assembly 2. An axial hollow portion is provided at one end of the lower shaft 1.1 near the arm assembly 2. The hollow portion is a hollow structure inside the lower shaft 1.1, and its length is adapted to the overall length of the transmission assembly 1.2 arranged on the lower shaft 1.1. A first oil inlet hole 1.11 is provided at the end of the lower shaft 1.1 for oil to enter the hollow portion. Several first oil outlet holes 1.12 are also provided at the hollow portion of the lower shaft 1.1, and the first oil outlet holes 1.11 and the first oil inlet holes 1.12 are connected through the hollow portion inside the lower shaft 1.1.

[0037] Furthermore, the transmission assembly 1.2 includes a front axle sleeve 1.21, a feeding eccentric wheel 1.22, a feeding cam 1.23, a tooth lifting eccentric wheel 1.24, a clutch slider 1.25, a central axle sleeve 1.26, and a clutch frame 1.27, etc. The functions of each component of the transmission assembly 1.2 are all existing technologies or common knowledge, and will not be described here. The front axle sleeve 1.21 is arranged in the circular mounting hole of the clutch bracket 1.27. A radially arranged connecting hole 1.211 is provided on the circumference of the front axle sleeve 1.21. An oil passage hole 1.212 is also provided inside the front axle sleeve 1.21. The direction of the oil passage hole 1.212 is parallel to the axial direction of the lower shaft 1.1. The position of the oil passage hole 1.212 output port corresponds to the position of the first oil inlet hole 1.11 of the lower shaft 1.1. The first oil supply pipe 3.1 of the oil supply assembly 3 is inserted into the connecting hole 1.211. When the first oil supply pipe 3.1 supplies oil, the oil enters the oil passage hole 1.212 through the connecting hole 1.211, and then flows into the first oil inlet hole 1.11 of the lower shaft 1.1 and then into the hollow part of the lower shaft 1.1. During the rotation of the lower shaft 1.1, the oil flows into the various components of the transmission assembly 1.2 through different first oil outlet holes 1.11, thereby achieving the lubrication of the transmission assembly 1.2. Radially arranged oil hole structures are provided on the feeding eccentric wheel 1.22, feeding cam 1.23, tooth lifting eccentric wheel 1.24, clutch slider 1.25 and clutch frame 1.27 to facilitate the return of lubricating oil (thrown out during rotation) and re-entering the return oil groove 4.2.

[0038] Furthermore, the arm assembly 2 includes a clutch crank 2.1, a gear bracket 2.2, and a clutch shaft seat 2.3, etc. The clutch crank 2.1, gear bracket 2.2, and clutch shaft seat 2.3 are arranged in parallel. The drive connection relationship between the arm assembly 2 and the transmission assembly 1.2 is existing technology or common knowledge, and will not be described in detail here. The second oil supply pipe 3.2 of the oil supply assembly 3 is arranged between the clutch crank 2.1 and the gear carrier 2.2. The second oil supply pipe 3.2 includes an oil outlet section 3.21. After exiting the three-way valve 3.3, the second oil supply pipe 3.2 needs to bypass the transmission assembly 1.2 so that the oil outlet section 3.21 is suspended on the arm assembly 2. The end of the oil outlet section 3.21 is a closed structure. A second oil outlet hole 3.22 and a third oil outlet hole 3.23 are arranged on the oil outlet section 3.21. The second oil outlet hole 3.22 faces the clutch crank 2.1, and the third oil outlet hole 3.23 faces the gear carrier 2.2 and the clutch shaft seat 2.3. The overall height of the oil outlet section 3.21 and the positions of the second oil outlet hole 3.22 and the third oil outlet hole 3.23 are slightly higher than the positions of the clutch crank 2.1 and the gear carrier 2.2. The clutch shaft seat 2.3 is the lowest position. A first oil inlet 2.11 is provided at the top of the clutch crank 2.1. The first oil inlet 2.11 is an oil hole structure. A crank, ball joint assembly, and other structures are rotatably connected to the clutch crank 2.1. The first oil inlet 2.11 can deliver the oil output from the second oil supply pipe 3.2 to the above-mentioned structures, achieving lubrication of the various structures on the clutch crank 2.1. A second oil inlet 2.21 is provided at the top of the gear frame 2.2. The second oil inlet 2.21 is a long strip-shaped oil groove structure at the top of the gear frame 2.2, which can supply oil lubrication to the structures connected to the gear frame 2.2. A third oil inlet 2.31 is provided at the top of the clutch shaft seat 2.3. The third oil inlet 2.31 is an oil hole structure, which can guide oil into the interior of the clutch shaft seat 2.3, ensuring lubrication between the clutch shaft seat 2.3 and the shaft. In other words, when the second oil supply pipe 3.2 supplies oil, the oil flows through the second oil outlet 3.22 at the oil outlet section 3.21 into the first oil receiving part 2.11 on the clutch crank 2.1, and through the third oil outlet 3.23 at the oil outlet section 3.21 into the second oil receiving part 2.21 on the gear frame 2.2 and the third oil receiving part 2.31 on the clutch shaft seat 2.3, thereby achieving lubrication of the various components on the clutch arm assembly 2.

Claims

1. A lubrication structure for a high-speed wrist flexor machine, characterized in that, It includes a lower shaft assembly and a retaining arm assembly disposed in the lower shaft cavity. The lower shaft assembly drives the retaining arm assembly. The lower shaft assembly and the retaining arm assembly are provided with an oil supply assembly. The oil supply assembly includes a first oil supply pipe connected to the lower shaft assembly and a second oil supply pipe disposed in the retaining arm assembly.

2. The lubrication structure for a high-speed wrist flexing machine according to claim 1, characterized in that, The lower shaft assembly includes a lower shaft, which has an axial hollow portion at one end near the arm assembly and a first oil inlet at the end. The first oil supply pipe is connected to the first oil inlet.

3. The lubrication structure for a high-speed wrist flexor machine according to claim 2, characterized in that, The lower shaft is provided with a radially arranged first oil outlet hole in the hollow part, the first oil outlet hole is connected to the hollow part, and a transmission component for driving the arm assembly is provided on the lower shaft and in the hollow part.

4. The lubrication structure for a high-speed wrist flexor machine according to claim 1, characterized in that, The clutch arm assembly includes a clutch crank and a gear holder arranged in parallel. The second oil supply pipe includes an oil outlet section, which is suspended between the clutch crank and the gear holder. The oil outlet section is provided with a second oil outlet hole and a third oil outlet hole facing the clutch crank and the gear holder, respectively. The top of the clutch crank and the gear holder are provided with a first oil receiving part and a second oil receiving part, respectively.

5. The lubrication structure for a high-speed wrist flexing machine according to claim 4, characterized in that, The arm assembly also includes a clutch shaft seat, which is located on the side of the gear frame away from the clutch crank, and a third oil receiving part is provided on the top of the clutch shaft seat.

6. A lubrication structure for a high-speed wrist flexor machine according to any one of claims 1 to 5, characterized in that, The oil supply assembly includes a three-way valve, the output end of which is connected to the first oil supply pipe and the second oil supply pipe, and the input end of which is provided with an oil inlet pipe.

7. The lubrication structure for a high-speed wrist flexor machine according to claim 6, characterized in that, The oil supply assembly also includes a return oil pipe, and a drive pump is provided between the oil supply pipe and the return oil pipe.

8. The lubrication structure for a high-speed wrist flexor machine according to claim 7, characterized in that, in The lower shaft cavity is provided with an oil return groove at the connection between the lower shaft assembly and the arm assembly, and the input end of the oil return pipe is located in the oil return groove.

9. The lubrication structure for a high-speed wrist flexing machine according to claim 7, characterized in that, It also includes an upper shaft assembly. The drive pump is a gear pump. The upper shaft assembly includes a drive shaft and a driven shaft. The drive shaft and the driven shaft are connected by a belt drive. The driven shaft is provided with a worm gear, which meshes with the drive shaft of the drive pump.

10. The lubrication structure for a high-speed wrist flexing machine according to claim 7, characterized in that, The drive pump is an electronic pump.

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