Lubricating and cooling mechanism for high-speed rotation of hydraulic weeding machine

Abstract

The utility model discloses a lubricating and cooling mechanism for high-speed rotation of a hydraulic weeding machine, which comprises a weeding rotating block and a rotating bearing component for mounting a hydraulic motor, and the rotating bearing component is hermetically sleeved on the outer wall of an output shaft of the hydraulic motor. An output shaft of the hydraulic motor penetrates out of the rotating bearing assembly, the weeding rotating block is arranged on the outer wall of the end of the output shaft of the hydraulic motor, an oil inlet pipe, an oil return pipe and a first oil drainage port are connected to an oil way of the hydraulic motor, and the oil way in the hydraulic motor communicates with an oil supply tank through the oil inlet pipe and the oil return pipe. A drainage input port and a second oil drainage port are formed in the rotating bearing assembly, a transmission connecting shaft is connected to an output shaft of the hydraulic motor, and the weeding rotating block is arranged on the outer wall of the transmission end of the transmission connecting shaft in a sleeving mode. According to the utility model, leaked oil of the hydraulic motor can be guided into the cavity of the motor mounting seat to lubricate and cool the roller bearing, so that the cooling effect is improved, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of forestry equipment, in particular to a lubrication and cooling mechanism for a hydraulic weeder rotating at high speed. Background Art

[0002] Mowing (weeding) equipment is a professional equipment with a relatively high technical core commonly used in forestry work, which can cut weeds on the ground. However, most of the mowing (weeding) equipment on the market is driven by motors or diesel engines, and the rotating bearings in the rotating mechanism are generally grease lubricated (butter lubricated), but grease lubrication has poor fluidity, and the bearing lubrication and cooling are insufficient. Long-term continuous work will cause serious wear and heat of the rotating bearing, causing the rotating bearing to be frequently damaged, shortening the service life of the rotating shaft and increasing the working cost. Utility Model Content

[0003] The purpose of the utility model is to provide a lubricating and cooling mechanism for high-speed rotation of a hydraulic weeder. The lubricating and cooling mechanism of the utility model can guide the leakage oil of the hydraulic motor into the cavity of the motor mounting seat to lubricate and cool the roller bearing, avoiding the leakage potential of the sealing end inside the hydraulic motor, which not only improves the cooling effect, but also prolongs the service life of the bearing. In order to achieve the above purpose, the following technical effects are adopted:

[0004] According to one aspect of the utility model, a lubrication and cooling mechanism for high-speed rotation of a hydraulic weeder is provided, the lubrication and cooling mechanism comprising a weeding rotating block and a rotating bearing assembly for installing a hydraulic motor, the rotating bearing assembly is sealingly sleeved on the outer wall of the output shaft of the hydraulic motor, the output shaft of the hydraulic motor passes through the rotating bearing assembly and the weeding rotating block is arranged on the outer wall of the output shaft end of the hydraulic motor, an oil inlet pipe, an oil return pipe and a first oil drain port are respectively connected to the oil circuit of the hydraulic motor, the oil circuit inside the hydraulic motor is respectively connected to the oil supply tank through the oil inlet pipe and the oil return pipe, a drainage input port and a second oil drain port are respectively arranged on the rotating bearing assembly, the first oil drain port is connected to the drainage input port through the drainage oil pipe, the second oil drain port is connected to the oil supply tank through the oil drain pipe, a transmission connecting shaft is connected to the output shaft of the hydraulic motor, the fixed end of the transmission connecting shaft is connected to the output shaft of the hydraulic motor through the rotating bearing assembly, and the weeding rotating block is sleeved on the outer wall of the transmission end of the transmission connecting shaft.

[0005] The above scheme is further preferred, wherein the rotating bearing assembly includes a motor mounting seat and a first roller bearing, a first shaft retaining spring and a hole retaining spring arranged in the motor mounting seat, the outer wall of the hydraulic motor is fixed to the motor mounting seat by a vertical fastening bolt parallel to the axial direction, one end of the fixed end of the transmission connecting shaft axially passes through the motor mounting seat and is sleeved with the outer wall of the output shaft of the hydraulic motor, the other end of the transmission end of the transmission connecting shaft axially passes through the motor mounting seat and is transmission-connected to the weeding rotating block, the first roller bearing, the first shaft retaining spring and the hole retaining spring are arranged on the transmission connecting shaft close to the side of the hydraulic motor, a first sealing ring for sealing the first shaft retaining spring is arranged on the output shaft of the hydraulic motor on the side of the transmission connecting shaft and the hydraulic motor, a second oil drain port connected to the oil drain pipe is arranged on the side of the motor mounting seat outside the first sealing ring, and a drainage input port connected to the drainage oil pipe is arranged on the side of the motor mounting seat close to the side of the weeding rotating block.

[0006] The above scheme is further preferred, in which a second sealing ring for sealing a retaining ring of a hole is provided on the outer wall of the transmission connecting shaft close to the hydraulic motor side, and the second oil drain port is provided on the side of the motor mounting seat outside the transmission connecting shaft close to the second sealing ring.

[0007] The above scheme is further preferred that a spacer sleeve close to the first roller bearing is arranged on the transmission connecting shaft close to the weeding rotating block, and a second shaft retaining spring and a skeleton oil seal sealed in the motor mounting seat are arranged on the transmission connecting shaft between the spacer sleeve and the weeding rotating block in sequence, and a drainage input port connected to the drainage oil pipe is arranged on the side wall of the motor mounting seat outside between the second shaft retaining spring and the skeleton oil seal.

[0008] The above scheme is further preferred, in which a second roller bearing is arranged on the transmission connecting shaft between the second shaft retaining spring and the skeleton oil seal, and a drainage input port connected to the drainage oil pipe is arranged on the inner wall of the cavity of the motor mounting seat outside the second roller bearing.

[0009] The above scheme is further preferred in that an oil immersion hole communicating with the internal cavity of the transmission connecting shaft is provided on the outer wall of the transmission connecting shaft between the second shaft retaining spring and the second roller bearing.

[0010] The above scheme is further preferred that a clamping disc is provided on the outer wall of the transmission end of the transmission connecting shaft, the weeding rotating block is connected to the transmission end of the transmission connecting shaft through the clamping disc, an axial sealing block is provided at the transmission end of the transmission connecting shaft, and one or more third sealing rings are provided on the outer wall of the sealing block.

[0011] In summary, the utility model adopts the above-mentioned technical scheme, and the utility model has the following technical effects: the utility model utilizes the hydraulic oil in the oil leakage circuit of the hydraulic motor to lubricate and cool the roller bearing, thereby solving the problem that when the motor rotates, hydraulic oil will be generated in the motor housing due to the lubrication of the motor itself and the internal leakage of the motor, and the hydraulic oil will accumulate more and more, causing the motor housing to leak oil at the motor sealing end due to excessive internal pressure; the utility model guides the leakage oil of the hydraulic motor into the cavity of the motor mounting seat to lubricate and cool the roller bearing, and then discharges the hydraulic oil from the cavity of the motor mounting seat back to the oil tank, avoiding the potential leakage of the internal sealing end of the hydraulic motor, which not only improves the cooling effect of the rotating bearing assembly, but also extends the service life of the rotating bearing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of a high-speed rotating lubrication and cooling mechanism of a hydraulic weeder of the utility model;

[0013] Figure 2 This is a schematic diagram of the exploded structure of a high-speed rotating lubrication and cooling mechanism of a hydraulic weeder of the utility model.

[0014] Figure 3 It is a cross-sectional structural schematic diagram of a high-speed rotating lubrication and cooling mechanism of a hydraulic weeder of the utility model;

[0015] In the drawings, there are a hydraulic motor 1, a rotary bearing assembly 2, a weeding rotary block 3, an oil supply tank 4, an oil inlet pipe 10, an oil return pipe 11, a first oil drain port 12, a drainage input port 20, a second oil drain port 21, a drainage oil pipe 22, an oil drain pipe 23, and a transmission connecting shaft 30;

[0016] Motor mounting seat 200, vertical fastening bolt 200a, first roller bearing 201, first shaft retaining spring 202, hole retaining spring 203, first sealing ring 204, second sealing ring 205. Spacer 206, second shaft retaining spring 207, skeleton oil seal 208, second roller bearing 209, oil immersion hole 210, clamping plate 301, sealing block 302, third sealing ring 303. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail 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 readers to have a thorough understanding of one or more aspects of the utility model, and these aspects of the utility model can be realized even without these specific details.

[0018] Combination Figure 1 , Figure 2 and Figure 3 As shown, according to the utility model, a lubricating and cooling mechanism for high-speed rotation of a hydraulic weeder, the lubricating and cooling mechanism comprises a weeding rotating block 3 and a rotating bearing assembly 2 for mounting a hydraulic motor 1, the rotating bearing assembly 2 is sealed on the outer wall of the output shaft of the hydraulic motor 1, the output shaft of the hydraulic motor 1 passes through the rotating bearing assembly 2 and the weeding rotating block 3 is arranged on the outer wall of the output shaft end of the hydraulic motor 1, the oil circuit inside the hydraulic motor 1 is respectively connected with an oil inlet pipe 10, an oil return pipe 11 and a first oil drain port 12, and the oil circuit of the hydraulic motor 1 is respectively connected through The oil inlet pipe 10 and the oil return pipe 11 are connected to the oil supply tank 4. A drainage input port 20 and a second oil drain port 21 are respectively provided on the rotary bearing assembly 2. The first oil drain port 12 is connected to the drainage input port 20 through a drainage oil pipe 22. The second oil drain port 21 is connected to the oil supply tank 4 through an oil drain pipe 23. A transmission connecting shaft 30 is connected to the output shaft of the hydraulic motor 1. The fixed end of the transmission connecting shaft 30 is connected to the output shaft of the hydraulic motor 1 through the rotary bearing assembly 2. The weeding rotating block 3 is sleeved on the outer wall of the transmission end of the transmission connecting shaft 30. When the hydraulic motor 1 rotates at high speed, the hydraulic oil in the housing will be discharged into the cavity of the rotating bearing assembly 2 for lubrication and cooling, and then discharged from the cavity, thereby achieving the purpose of quickly lubricating and cooling the rotating bearing assembly 2, improving the cooling effect, and extending the service life of the rotating bearing assembly 2; when the hydraulic motor 1 drives the weeding rotating block 3 to rotate at high speed, the first oil drain port 12 on the hydraulic motor 1 is connected to the drainage input port 20 of the rotating bearing assembly 2 through the drainage oil pipe 22, and the hydraulic motor 1 injects the hydraulic oil in the oil drain circuit into the sealed cavity of the rotating bearing assembly 2 for lubrication and cooling, and then returns to the oil supply tank 4 in the oil circuit through the second oil drain port 21 on the rotating bearing assembly 2.

[0019] In the present utility model, combined with Figure 1 , Figure 2 and Figure 3As shown, the rotary bearing assembly 2 includes a motor mounting seat 200 and a first roller bearing 201, a first shaft retaining spring 202 and a hole retaining spring 203 arranged in the motor mounting seat 200. The outer wall of the hydraulic motor 1 is fixed to the motor mounting seat 200 by a vertical fastening bolt 200a parallel to the axial direction. One end of the fixed end of the transmission connecting shaft 30 axially passes through the motor mounting seat 200 and is splined with the output shaft of the hydraulic motor 1. The other end of the transmission end of the transmission connecting shaft 30 axially passes through the motor mounting seat 200 and is transmission-connected to the weeding rotating block 3. The first roller bearing 201, the first shaft retaining spring 202 and the hole retaining spring 203 are arranged on the transmission connecting shaft 30 close to the hydraulic motor 1. A first sealing ring 204 for sealing is arranged on the output shaft of the hydraulic motor 1 on one side of the transmission connecting shaft 30 and the hydraulic motor 1, and the first sealing ring 204 is used to seal the gap between the motor rotating shaft and the transmission connecting shaft 30; a second oil drain port 21 connected to the oil drain pipe 23 is arranged on the side of the motor mounting seat 200 outside the first sealing ring 204, and a drainage input port 20 connected to the drainage oil pipe 22 is arranged on the side of the motor mounting seat 200 close to the weeding rotating block 3; a second sealing ring 205 for sealing is arranged on the outer wall of the transmission connecting shaft 30 close to the hydraulic motor 1, and the second oil drain port 21 is arranged on the side of the motor mounting seat 200 outside the transmission connecting shaft 30 close to the second sealing ring 205. An oil drain channel connected to the second oil drain port 21 is arranged on the inner wall of the cavity of the motor mounting seat 200 between the second sealing ring 205 and the hole retaining spring 203, so that the hydraulic oil in the motor mounting seat 200 lubricates and cools the first roller bearing 201, and the hydraulic oil is discharged from the oil drain channel through the second oil drain port 21, and then flows back to the oil supply tank 4 through the oil drain pipe 23; a spacer sleeve 206 close to the first roller bearing 201 is arranged on the transmission connecting shaft 30 close to the weeding rotating block 3, and a second shaft retaining spring 207 and a skeleton oil seal 208 sealed in the motor mounting seat 200 are arranged on the transmission connecting shaft 30 between the spacer sleeve 206 and the weeding rotating block 3 in turn, and the motor mounting seat on the periphery between the second shaft retaining spring 207 and the skeleton oil seal 208 is provided. A drainage input port 20 connected to the drainage oil pipe 22 is arranged on the cavity side wall of 200, a second roller bearing 209 is arranged on the transmission connecting shaft 30 between the second shaft retaining ring 207 and the skeleton oil seal 208, a drainage input port 20 connected to the drainage oil pipe 22 is arranged on the cavity inner wall of the motor mounting seat 200 outside the second roller bearing 209, the second sealing ring 205 is used to seal the hydraulic motor mounting port and the motor mounting seat, the third sealing ring 303 is used to seal the gap between the clamping disk 301 and the sealing block 302, and the skeleton oil seal 208 is used to seal the gap between the motor mounting seat 200 and the transmission connecting shaft 30, so that the three components of the motor mounting seat 200, the hydraulic motor 1 and the transmission connecting shaft 30 are connected internally to form a sealed cavity.When the hydraulic motor 1 drives the transmission connecting shaft 30 to rotate at a high speed in the motor mounting seat 200, the weeding rotating block 3 on the transmission connecting shaft 30 cuts the weeds on the ground. At this time, due to the lubrication and internal leakage of the hydraulic motor 1 itself, hydraulic oil will be generated in the inner cavity of the housing of the hydraulic motor 1 and accumulate more and more. When the hydraulic motor 1 rotates at a high speed, in order to prevent the motor housing from leaking oil at the motor sealing end due to excessive internal pressure, an oil drain pipe is generally connected to the oil drain port of the hydraulic motor 1 for drainage, and the hydraulic oil is transferred back to the oil drain port. In the utility model, a drainage oil pipe 22 for draining hydraulic oil is connected to the first oil drain port 12 of the hydraulic motor 1, so that the hydraulic motor 1 drains the hydraulic oil in the housing through the first oil drain port 12 and the drainage oil pipe 22 to the drainage input port 20 and enters the internal cavity of the motor mounting seat 200, lubricates and cools the second roller bearing 209 and the first roller bearing 201 in the motor mounting seat 200, and then discharges from the second oil drain port 21 of the motor mounting seat 200, and flows back to the oil supply tank 4 through the oil drain pipe 23.

[0020] In the present utility model, combined with Figure 1 , Figure 2 and Figure 3 As shown, an oil immersion hole 210 connected to the internal cavity of the transmission connecting shaft 30 is provided on the outer wall of the transmission connecting shaft 30 between the second shaft retaining ring 207 and the second roller bearing 209. The hydraulic oil entering the internal cavity of the motor mounting seat 200 cools and lubricates the internal cavity of the transmission connecting shaft 30 through the oil immersion hole 210, and is discharged from the oil outlet hole on the outer wall of the transmission connecting shaft 30 on the side of the first sealing ring 204, and then flows out to the motor mounting seat 200 and is discharged from the oil leakage channel through the second oil leakage port 21.

[0021] In the present utility model, combined with Figure 1 , Figure 2 and Figure 3 As shown, a clamping disc 301 is arranged on the outer wall of the transmission end of the transmission connecting shaft 30, and the weeding rotating block 3 is connected to the transmission end of the transmission connecting shaft 30 through the clamping disc 301. An axial sealing block 302 is arranged on the transmission end of the transmission connecting shaft 30, and a plurality of third sealing rings 303 are arranged on the outer wall of the sealing block 302. The third sealing ring 303 is used for sealing the hydraulic oil inside the transmission connecting shaft 30, and can cool the outside and inside of the transmission connecting shaft 30, thereby improving the service life of the entire rotating bearing assembly 2.

[0022] 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 protection scope of the present invention.

Claims

1. A lubrication and cooling mechanism for high-speed rotation of a hydraulic weeder, characterized in that: The lubrication and cooling mechanism includes a weeding rotating block and a rotating bearing assembly for installing a hydraulic motor, the rotating bearing assembly is sealingly sleeved on the outer wall of the output shaft of the hydraulic motor, the output shaft of the hydraulic motor passes through the rotating bearing assembly and the weeding rotating block is arranged on the outer wall of the end of the output shaft of the hydraulic motor, an oil inlet pipe, an oil return pipe and a first oil drain port are respectively connected to the oil circuit of the hydraulic motor, the oil circuit inside the hydraulic motor is connected to the oil supply tank through the oil inlet pipe and the oil return pipe respectively, a drainage input port and a second oil drain port are respectively arranged on the rotating bearing assembly, the first oil drain port is connected to the drainage input port through the drainage oil pipe, the second oil drain port is connected to the oil supply tank through the oil drain pipe, a transmission connecting shaft is connected to the output shaft of the hydraulic motor, the fixed end of the transmission connecting shaft is connected to the output shaft of the hydraulic motor through the rotating bearing assembly, and the weeding rotating block is sleeved on the outer wall of the transmission end of the transmission connecting shaft.

2. The lubrication and cooling mechanism for high-speed rotation of a hydraulic weeder according to claim 1, characterized in that: The rotary bearing assembly includes a motor mounting seat and a first roller bearing, a first shaft retaining spring and a hole retaining spring arranged in the motor mounting seat. The outer wall of the hydraulic motor is fixed to the motor mounting seat by a vertical fastening bolt parallel to the axial direction. One end of the fixed end of the transmission connecting shaft axially passes through the motor mounting seat and is sleeved with the outer wall of the output shaft of the hydraulic motor. The other end of the transmission end of the transmission connecting shaft axially passes through the motor mounting seat and is transmission-connected to the weeding rotating block. The first roller bearing, the first shaft retaining spring and the hole retaining spring are arranged on the transmission connecting shaft close to the side of the hydraulic motor. A first sealing ring for sealing the first shaft retaining spring is arranged on the output shaft of the hydraulic motor on the side of the transmission connecting shaft and the hydraulic motor. A second oil drain port connected to the oil drain pipe is arranged on the side of the motor mounting seat outside the first sealing ring. A drainage input port connected to the drainage oil pipe is arranged on the side of the motor mounting seat close to the side of the weeding rotating block.

3. The lubrication and cooling mechanism for high-speed rotation of a hydraulic weeder according to claim 2, characterized in that: A second sealing ring for sealing a hole retaining ring is arranged on the outer wall of the transmission connecting shaft near the hydraulic motor side, and the second oil drain port is arranged on the side of the motor mounting seat outside the transmission connecting shaft near the second sealing ring side.

4. The lubrication and cooling mechanism for high-speed rotation of a hydraulic weeder according to claim 2, characterized in that: A spacer sleeve close to the first roller bearing is arranged on the transmission connecting shaft close to the weeding rotating block, and a second shaft retaining spring and a skeleton oil seal sealed in the motor mounting seat are arranged on the transmission connecting shaft between the spacer sleeve and the weeding rotating block in sequence, and a drainage input port connected to the drainage oil pipe is arranged on the side wall of the motor mounting seat outside between the second shaft retaining spring and the skeleton oil seal.

5. A lubricating and cooling mechanism for high-speed rotation of a hydraulic weeder according to claim 4, characterized in that: A second roller bearing is arranged on the transmission connection shaft between the second shaft retaining ring and the skeleton oil seal, and a drainage input port connected with the drainage oil pipe is arranged on the inner wall of the cavity of the motor mounting seat outside the second roller bearing.

6. A lubricating and cooling mechanism for high-speed rotation of a hydraulic weeder according to claim 5, characterized in that: An oil immersion hole communicating with the inner cavity of the transmission connecting shaft is arranged on the outer wall of the transmission connecting shaft between the second shaft retaining spring and the second roller bearing.

7. A lubricating and cooling mechanism for high-speed rotation of a hydraulic weeder according to any one of claims 1 to 6, characterized in that: A clamping disc is arranged on the outer wall of the transmission end of the transmission connecting shaft, and the weeding rotating block is connected to the transmission end of the transmission connecting shaft through the clamping disc. An axial sealing block is arranged on the transmission end of the transmission connecting shaft, and one or more third sealing rings are arranged on the outer wall of the sealing block.

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