Hydraulic cylinder gear shifting speed reducer

Abstract

The invention relates to the technical field of speed reducers, and discloses a hydraulic cylinder gear shifting speed reducer which comprises a speed reducer box body, a pipeline frame is arranged on the speed reducer box body, and a plurality of spray heads are arranged at the bottom of the pipeline frame; the transmission shaft, the input shaft and the output shaft are arranged in the speed reducer box body; the lubricating component can convey a first preset amount of grease into the connecting shaft when the first gear shifting gear is meshed with the first reduction gear, and can convey a second preset amount of grease into the connecting shaft when the second gear shifting gear is meshed with the second reduction gear. Compared with the prior art, the quantity of lubricating grease is different, the quantity of the lubricating grease for lubricating the first gear shifting gear is larger than that of the lubricating grease for lubricating the second gear shifting gear, the quantity of the grease can be adaptively adjusted, and the problems that the rotating damping is increased due to the excessive quantity of the lubricating grease and the lubrication is insufficient due to the too small quantity of the lubricating grease are solved.

Description

Technical Field

[0001] The invention relates to the technical field of reducers, and in particular to a hydraulic cylinder shift reducer. Background Art

[0002] Hydraulic gearshift reducer is a transmission device that uses a hydraulic system to perform gear shifting operations. Its main function is to achieve changes in output speed and torque by changing the meshing state of the gears to adapt to different work requirements. Hydraulic gearshift reducers are widely used in engineering machinery, mining equipment, agricultural machinery, ships and other fields. They are widely favored for their advantages such as smooth gear shifting, simple operation and high reliability.

[0003] In application, the gear reducer needs to add lubricating oil regularly to lubricate the internal gears. The main functions of lubricating grease in the gear reducer include: reducing friction and wear: lubricating grease forms an oil film on the surface of the gear, reducing the friction coefficient between the gears, thereby reducing wear. Heat dissipation and cooling: lubricating grease helps to conduct and dissipate the heat generated during the operation of the gears to prevent overheating. Rust and corrosion prevention: lubricating grease covers the surface of the gears, isolates air and moisture, and prevents metal from rusting and corrosion. Vibration and noise reduction: lubricating grease can absorb and buffer the vibration and noise generated during the gear meshing process, improving the working environment.

[0004] Although lubricating grease is essential for the normal operation of reducer gears, its amount should be appropriate. Too much lubricating grease will bring a series of problems. For example, too much lubricating grease will cause greater friction resistance during the meshing process of the gears, reduce transmission efficiency, and increase the risk of oil leakage: Too much lubricating grease will increase the internal pressure of the reducer, easily cause damage to the seals, cause oil leakage, pollute the environment and increase maintenance costs. The amount of lubricating grease in the reducer needs to be controlled.

[0005] In the prior art, the lubrication of the reducer is usually carried out by using a power component such as an oil pump to extract grease into an oil pipe, and using a nozzle to spray the grease on the various gear components of the gear mechanism. For a shiftable reducer, a shift piston is usually used, which is connected to a shift lever. A hydraulic cylinder is used to push the shift piston to engage different gear sets and achieve switching of different gears. That is, when working, only one of the multiple gears on the shift lever is performing transmission work. Under the premise of controlling the amount of grease in the reducer, the prior art uses a nozzle to spray the grease. In this case, some of the grease will be sprayed on the gears that are not performing transmission work, resulting in ineffective lubrication. The grease is also distributed, which may result in insufficient lubrication of the parts that need lubrication. The ineffective lubrication increases the consumption of grease. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a hydraulic cylinder shift reducer, aiming to alleviate the above problems at least to a certain extent.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: A hydraulic cylinder shift reducer, comprising: A reducer housing, wherein a pipe rack is provided on the reducer housing, and a plurality of nozzles are provided at the bottom of the pipe rack; A transmission shaft, an input shaft and an output shaft arranged in the reducer housing; A first reduction gear and a second reduction gear are arranged on the transmission shaft, the output shaft and the input shaft are provided with transmission gears meshing with each other, and the transmission gear, the first reduction gear and the second reduction gear correspond to the positions of the nozzles; A connecting shaft provided at one end of the input shaft, wherein the connecting shaft is provided with a first shifting gear and a second shifting gear; A lubrication opening is provided on the first shift gear and the second shift gear, and a lubrication port is provided on the connecting shaft and communicates with the lubrication opening and the connecting shaft; A hydraulic shifting part provided between the reducer housing and the connecting shaft, used for moving the position of the connecting shaft, when the connecting shaft is in a first preset position, the lubrication port communicating with the first shift gear can be opened, and the lubrication port communicating with the second shift gear can be closed; when the connecting shaft is in a second preset position, the lubrication port communicating with the first shift gear can be closed, and the lubrication port communicating with the second shift gear can be closed; A filter portion provided on the reducer housing is used to filter lubricating grease, and a grease storage cavity is formed between the filter portion and the reducer housing; A conveying portion provided between the reducer housing and the pipe rack, for conveying the lubricating grease in the grease storage cavity to the pipe rack; A lubricating component provided between the reducer housing and the connecting shaft, used to transfer lubricating grease in the grease storage cavity to the connecting shaft, and the lubricating component can transport grease when the connecting shaft rotates; When the first shift gear is meshed with the first reduction gear, the lubricating component can deliver a first preset amount of grease into the connecting shaft, and when the second shift gear is meshed with the second reduction gear, the lubricating component can deliver a second preset amount of grease into the connecting shaft.

[0008] Preferably, the hydraulic shifting part includes a hydraulic cylinder connected to the reducer housing, one end of the telescopic shaft of the hydraulic cylinder is connected to a connecting plate extending into the reducer housing, the connecting plate is rotatably connected to the connecting shaft, the connecting shaft is slidably connected to the input shaft, a connecting pipe is rotatably connected to the reducer housing, and one end of the connecting pipe is connected to a limit bar slidably connected to the connecting shaft.

[0009] Preferably, the hydraulic shifting part also includes a support rod connected to one end of the connecting pipe, the outer wall of the support rod is provided with a side opening, a rack is connected in the side opening, a bracket is connected in the lubrication port, a first screw rod is rotatably connected to the bracket, a gear part meshing with the rack is connected to the first screw rod, and a sealing block slidably connected to the connecting shaft is threadedly connected to the first screw rod.

[0010] Preferably, a bellows is connected between the connecting pipe and the connecting shaft, and a cover body covering the hydraulic cylinder is connected to one side of the reducer housing.

[0011] Preferably, the lubrication component includes a connecting ring rotatably connected to the connecting tube, the inner side wall of the connecting tube is provided with a plurality of through openings connected to the connecting ring, the bottom of the grease storage cavity is connected to a lubrication tube, a piston is provided in the lubrication tube, the piston separates the lubrication tube into a delivery chamber and a liquid inlet chamber, a liquid infusion pipeline is connected between the delivery chamber and the connecting ring, a plurality of pressure pipelines are connected between the delivery chamber and the liquid inlet chamber, a liquid inlet pipe is connected between the liquid inlet chamber and the grease storage cavity, and a one-way valve mechanism is provided at one end of the liquid inlet pipe at the liquid inlet chamber, the pressure pipeline at one end of the delivery chamber, and the liquid infusion pipeline at one end of the delivery chamber.

[0012] Preferably, a first connecting frame is connected inside the liquid inlet pipe, a second screw rod is rotatably connected to the first connecting frame, a flow limiting tube slidably connected to the liquid inlet pipe is threadedly connected to the second screw rod, a plurality of flow limiting ports are provided on the outer wall of the flow limiting tube, a linkage shaft is slidably connected to the top of the lubrication pipe, a limiting port is provided at the bottom of the linkage shaft, a limiting rod connected to the piston is slidably connected to the limiting port, and a first spring is connected between the linkage shaft and the piston; A rotating shaft is rotatably connected to the reducer housing, a chain transmission mechanism is connected between the rotating shaft and the connecting pipe, a connecting rod is rotatably connected to the rotating shaft, and the linkage shaft is rotatably connected to the bottom of the connecting rod.

[0013] Preferably, a second spring is connected between the second screw rod and the first connecting frame, a guide frame is connected to the bottom of the liquid inlet pipe, a traction rope is connected to the connecting plate, and one end of the traction rope passes around the guide frame and is wound around the second screw rod.

[0014] Preferably, the one-way valve mechanism includes a second connecting frame connected to the liquid inlet pipe, the pressure pipe and the infusion pipe, the second connecting frame is slidably connected with a limiting shaft, a third spring is connected between the limiting shaft and the second connecting frame, and a baffle is connected to the limiting shaft.

[0015] Preferably, the filter unit comprises a filter frame connected to the reducer housing, and a filter screen is provided on the filter frame.

[0016] Preferably, the delivery part comprises a pump connected to the grease storage cavity, a liquid outlet end of the pump is connected to a delivery pipeline, and the delivery pipeline is communicated with the pipeline rack.

[0017] In summary, the present invention mainly has the following beneficial effects: 1. The present invention provides an input shaft. When it is used, an operator can connect a driving power source to the input shaft. The input shaft can rotate the first shift gear and the second shift gear through the connecting shaft. When the hydraulic shift unit controls the connecting shaft to allow the first shift gear and the first reduction gear to mesh, the output shaft rotates at a preset speed. When the hydraulic shift unit controls the connecting shaft to allow the second shift gear and the second reduction gear to mesh and the first shift gear and the first reduction gear to disengage, the output shaft rotates at a preset speed to achieve gear shifting. The first shift gear and the second shift gear have different gear ratios and different diameters, so that the first shift gear and the first reduction gear meshed therewith can be lubricated. At this time, the lubrication port connected to the second shift gear is in a closed state, so that the problem of ineffective lubrication caused by the lubrication grease flowing out through the lubrication opening thereon can be avoided, and the problem of insufficient lubrication of the first shift gear caused by the second shift gear sharing the grease can also be avoided.

[0018] 2. In the present invention, when the hydraulic shifting part allows the connecting shaft to move so that the second shifting gear and the second reduction gear are in a meshing state, similarly to the above, further, the lubricating component can deliver a first preset amount of grease to the connecting shaft when the first shifting gear is meshed with the first reduction gear, and can deliver a second preset amount of grease to the connecting shaft when the second shifting gear is meshed with the second reduction gear. When two different gears are transmitting, the amount of grease used to lubricate them is different. The amount of grease used to lubricate the first shifting gear is larger than that used to lubricate the second shifting gear, and the amount of grease can be adaptively adjusted, thereby avoiding the problem of increased rotational damping due to excessive amount of grease and insufficient lubrication due to insufficient amount of grease. This solves the problem in the prior art that the idling gears are ineffectively lubricated after shifting, the grease is distributed, and the parts that need lubrication may not be sufficiently lubricated, and the ineffectively lubricated parts increase the consumption of grease. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the transmission shaft structure of the present invention; Figure 3 is a schematic structural diagram of a first shift gear and a second shift gear of the present invention; Figure 4 It is a schematic diagram of the connecting shaft structure of the present invention; Figure 5 yes Figure 4 A schematic diagram of the enlarged local structure at point A in the middle; Figure 6 It is a schematic diagram of the rotating shaft structure of the present invention; Figure 7 It is a schematic diagram of the structure of the lubrication pipe of the present invention; Figure 8 It is a schematic diagram of the structure of the liquid inlet pipe of the present invention.

[0020] Reference numerals: 100, reducer housing; 101, pipe rack; 102, nozzle; 103, transmission shaft; 104, input shaft; 105, output shaft; 106, first reduction gear; 107, second reduction gear; 108, transmission gear; 109, connecting shaft; 110, first shift gear; 111, second shift gear; 112, lubrication opening; 113, lubrication port; 114, filter unit; 115, conveying unit; 116, grease storage cavity; 200, hydraulic cylinder; 201, connecting plate; 202, connecting pipe; 203, limit strip; 204, support rod; 205, side opening; 206, rack; 207, bracket; 208, first screw rod; 209, gear member; 210, blocking block; 211, bellows; 212, cover body; 300, connecting ring; 301, through port; 302, lubrication pipe; 303, piston; 304, delivery chamber; 305, liquid inlet chamber; 306, liquid delivery pipeline; 307, pressure pipeline; 308, liquid inlet pipe; 309, one-way valve mechanism; 310, second connecting frame; 311, limiting shaft; 312, third spring; 313, baffle; 400, first connecting frame; 401, second screw rod; 402, flow limiting tube; 403, flow limiting port; 404, linkage shaft; 405, limit port; 406, limit rod; 407, first spring; 408, second spring; 409, guide frame; 410, traction rope; 411, rotating shaft; 412, chain transmission mechanism; 413, connecting rod; 500, filter frame; 501, filter screen; 502, pump; 503, delivery pipeline. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] refer to Figure 1-Figure 8 , a hydraulic cylinder shift reducer, comprising: A reducer housing 100, a pipe rack 101 is provided on the reducer housing 100, and a plurality of nozzles 102 are provided at the bottom of the pipe rack 101; The transmission shaft 103, the input shaft 104 and the output shaft 105 are arranged in the reducer housing 100; A first reduction gear 106 and a second reduction gear 107 are arranged on the transmission shaft 103, and a transmission gear 108 meshing with each other is arranged on the output shaft 105 and the input shaft 104, and the transmission gear 108, the first reduction gear 106 and the second reduction gear 107 correspond to the positions of the nozzle 102; A connecting shaft 109 is provided at one end of the input shaft 104, and a first shifting gear 110 and a second shifting gear 111 are provided on the connecting shaft 109; A lubrication opening 112 is provided on the first shift gear 110 and the second shift gear 111 , and a lubrication port 113 is provided on the connecting shaft 109 and communicates with the lubrication opening 112 ; the lubrication port 113 is communicated with the connecting shaft 109 ; The hydraulic shifting part provided between the reducer housing 100 and the connecting shaft 109 is used to move the position of the connecting shaft 109. When the connecting shaft 109 is in the first preset position, the lubrication port 113 communicating with the first shift gear 110 can be opened and the lubrication port 113 communicating with the second shift gear 111 can be closed. When the connecting shaft 109 is in the second preset position, the lubrication port 113 communicating with the first shift gear 110 can be closed and the lubrication port 113 communicating with the second shift gear 111 can be closed. The filter 114 disposed on the reducer housing 100 is used to filter the lubricating grease, and a grease storage cavity 116 is formed between the filter 114 and the reducer housing 100; The conveying portion 115 disposed between the reducer housing 100 and the pipe rack 101 is used to convey the lubricating grease in the grease storage cavity 116 to the pipe rack 101; The lubricating component provided between the reducer housing 100 and the connecting shaft 109 is used to transfer the lubricating grease in the grease storage cavity 116 to the connecting shaft 109. The lubricating component can transport the grease when the connecting shaft 109 rotates; When the first shift gear 110 is meshed with the first reduction gear 106, the lubricating component can deliver a first preset amount of grease to the connecting shaft 109, and when the second shift gear 111 is meshed with the second reduction gear 107, the lubricating component can deliver a second preset amount of grease to the connecting shaft 109; By setting the input shaft 104, when in use, the operator can connect the driving power source to the input shaft 104, and the input shaft 104 can rotate the first shift gear 110 and the second shift gear 111 through the connecting shaft 109. When the hydraulic shift unit controls the connecting shaft 109 to allow the first shift gear 110 and the first reduction gear 106 to mesh, the output shaft 105 rotates at a preset speed. When the hydraulic shift unit controls the connecting shaft 109 to allow the second shift gear 111 and the second reduction gear 107 to mesh and the first shift gear 110 and the first reduction gear 106 to disengage, the output shaft 105 rotates at a preset speed to achieve gear shifting, wherein the gear ratios of the first shift gear 110 and the second shift gear 111 are different, and their diameters are also different. The first gear shifting gear 110 and the second gear shifting gear 111 are the same, that is, the amount of lubricating grease required by the first gear shifting gear 110 is larger than that of the second gear shifting gear 111. When working, the lubricating component can transport the lubricating grease in the grease storage cavity 116 to the connecting shaft 109. When the first gear shifting gear 110 and the first reduction gear 106 are in meshing state, and the second gear shifting gear 111 and the second reduction gear 107 are in a disengaged state, the lubricating port 113 connected to the first gear shifting gear 110 is opened, and the lubricating port 113 connected to the second gear shifting gear 111 is closed. The lubricating component can transport the lubricating grease to the connecting shaft 109 when the connecting shaft 109 rotates, and the grease can enter the lubricating port 113 and be guided by the lubricating port 113 to enter the lubricating opening 113 in the first gear shifting gear 110. 2, the first shift gear 110 is lubricated, and the lubricating grease can be dispersed on the tooth block thereon according to the centrifugal force when the first shift gear 110 rotates, so as to achieve the purpose of lubricating the first shift gear 110 and the first reduction gear 106 meshing therewith, and at this time, the lubrication port 113 connected to the second shift gear 111 is in a closed state, which can avoid the problem of ineffective lubrication caused by the lubrication opening 112 thereon flowing out of the lubricating grease, and can also avoid the problem that the first shift gear 110 cannot be sufficiently lubricated due to the grease being distributed by the second shift gear 111. When the hydraulic shifting part moves the connecting shaft 109 so that the second shift gear 111 and the second reduction gear 107 are in a meshing state, the same as above, Furthermore, the lubricating component can deliver a first preset amount of grease to the connecting shaft 109 when the first shift gear 110 is meshed with the first reduction gear 106, and can deliver a second preset amount of grease to the connecting shaft 109 when the second shift gear 111 is meshed with the second reduction gear 107. When two different gears are transmitting, the amount of grease used to lubricate them is different. The amount of grease used to lubricate the first shift gear 110 is larger than that used to lubricate the second shift gear 111. The amount of grease can be adjusted adaptively, avoiding the problem of increased rotation damping due to excessive grease and insufficient lubrication due to insufficient grease. This solves the problem of ineffective lubrication of idling gears after shifting in the prior art, and distributes the grease.This may result in insufficient lubrication of the parts that need lubrication, and the ineffective lubrication of the parts increases the consumption of lubricating grease.

[0023] As a further solution of the present invention, the hydraulic shifting unit includes a hydraulic cylinder 200 connected to the reducer housing 100, one end of the telescopic shaft of the hydraulic cylinder 200 is connected to a connecting plate 201 extending into the reducer housing 100, the connecting plate 201 is rotatably connected to the connecting shaft 109, the connecting shaft 109 is slidably connected to the input shaft 104, and a connecting pipe 202 is rotatably connected to the reducer housing 100, and one end of the connecting pipe 202 is connected to a limit bar 203 slidably connected to the connecting shaft 109; By setting up the hydraulic cylinder 200, when in use, the movement of the telescopic shaft of the hydraulic cylinder 200 can be used to allow the connecting plate 201 to drive the connecting shaft 109 to move, so as to achieve the purpose of allowing the connecting shaft 109 to drive the first shift gear 110 and the second shift gear 111 thereon to move. Specifically, when the input shaft 104 rotates, it can drive the connecting shaft 109 to rotate. The rotation of the connecting shaft 109 can allow the connecting tube 202 to rotate through the limit bar 203. The input shaft 104, the connecting tube 202, the limit bar 203 slidably connected to the connecting shaft 109, and the connecting plate 201 can support the position of the connecting shaft 109 to ensure that the connecting shaft 109 can rotate with the input shaft 104 while also generating linear motion.

[0024] As a further solution of the present invention, the hydraulic shifting unit further includes a support rod 204 connected to one end of the connecting pipe 202, the outer side wall of the support rod 204 is provided with a side opening 205, a rack 206 is connected in the side opening 205, a bracket 207 is connected in the lubrication port 113, a first screw rod 208 is rotatably connected to the bracket 207, a gear member 209 meshing with the rack 206 is connected to the first screw rod 208, and a blocking block 210 slidably connected to the connecting shaft 109 is threadedly connected to the first screw rod 208; By setting the blocking block 210, in the initial state, the blocking block 210 corresponding to the first shift gear 110 is not sleeved in the lubrication port 113, and the blocking block 210 corresponding to the second shift gear 111 is sleeved in the lubrication port 113. When the hydraulic shifting part allows the connecting shaft 109 to move, the connecting shaft 109 can drive the bracket 207, the blocking block 210, and the screw rod to move. When the screw rod moves, the gear part 209 and the rack 206 can also generate a rotational motion to allow the blocking block 210 to move. The blocking block 210 corresponding to the first shift gear 110 can move to be sleeved with the lubrication port 113 to close the lubrication port 113, and the blocking block 210 corresponding to the second shift gear 111 can move to be disengaged from the lubrication port 113 to open the lubrication port 113 to lubricate the second shift gear 111, thereby achieving the purpose of switching the lubrication port 113.

[0025] As a further solution of the present invention, a bellows 211 is connected between the connecting pipe 202 and the connecting shaft 109, and a cover 212 covering the hydraulic cylinder 200 is connected to one side of the reducer housing 100; By providing the bellows 211, when the connecting shaft 109 moves, the distance between the connecting shaft 109 and the connecting pipe 202 increases, and the provided bellows 211 can stretch to fill the distance between the two, so as to avoid the problem of lubricating grease leaking from the connection between the two.

[0026] As a further solution of the present invention, the lubricating component includes a connecting ring 300 rotatably connected to the connecting tube 202, the inner side wall of the connecting tube 202 is provided with a plurality of openings 301 connected to the connecting ring 300, the bottom of the grease storage cavity 116 is connected to the lubrication tube 302, a piston 303 is provided in the lubrication tube 302, the piston 303 separates the lubrication tube 302 into a delivery chamber 304 and a liquid inlet chamber 305, a liquid infusion pipeline 306 is connected between the delivery chamber 304 and the connecting ring 300, a plurality of pressure pipelines 307 are connected between the delivery chamber 304 and the liquid inlet chamber 305, a liquid inlet pipe 308 is connected between the liquid inlet chamber 305 and the grease storage cavity 116, the liquid inlet pipe 308 is located at one end of the liquid inlet chamber 305, the pressure pipeline 307 is located at one end of the delivery chamber 304 and the liquid infusion pipeline 306 is located at one end of the delivery chamber 304 and a one-way valve mechanism 309 is provided, and only one pressure pipeline 307 is shown in the figure.

[0027] By setting the one-way valve mechanism 309, grease can only enter the liquid inlet chamber 305 through the liquid inlet pipe 308, grease can only enter the delivery chamber 304 through the pressure pipe 307, and grease can only enter the connecting ring 300 through the liquid delivery pipe 306. When in use, the piston 303 can reciprocate up and down. In the initial state, the piston 303 is in the upper limit position. When the piston 303 moves downward, the grease in the liquid inlet chamber 305 can be pressed into the delivery chamber 304 through the pressure pipe 307. When 303 is reset upward, the grease in the delivery chamber 304 can be pressed into the connecting ring 300 through the infusion pipe 306, and the grease in the connecting ring 300 can enter the connecting pipe 202. The grease in the connecting pipe 202 can enter the bellows 211, the connecting shaft 109, the lubrication port 113 and the lubrication opening 112. Due to the rotation of the first shift gear 110 or the second shift gear 111, the centrifugal force can be used to reach the outside of the first shift gear 110 or the second shift gear 111 to lubricate one of them.

[0028] As a further solution of the present invention, a first connecting frame 400 is connected inside the liquid inlet pipe 308, a second screw rod 401 is rotatably connected to the first connecting frame 400, a flow limiting pipe 402 slidably connected to the liquid inlet pipe 308 is threadedly connected to the second screw rod 401, a plurality of flow limiting ports 403 are provided on the outer wall of the flow limiting pipe 402, a linkage shaft 404 is slidably connected to the top of the lubrication pipe 302, a limiting port 405 is provided at the bottom of the linkage shaft 404, a limiting rod 406 connected to the piston 303 is slidably connected to the limiting port 405, and a first spring 407 is connected between the linkage shaft 404 and the piston 303; The reducer housing 100 is rotatably connected with a rotating shaft 411, a chain transmission mechanism 412 is connected between the rotating shaft 411 and the connecting pipe 202, a connecting rod 413 is rotatably connected with the rotating shaft 411, and the linkage shaft 404 is rotatably connected to the bottom of the connecting rod 413; By setting the flow limiting tube 402, when the first shifting gear 110 and the first reduction gear 106 are in meshing state, the flow limiting ports 403 on the flow limiting tube 402 are all exposed outside the liquid inlet tube 308, and grease can enter the liquid inlet tube 308 through the plurality of flow limiting ports 403. When working, the linkage shaft 404 moves downward to resist the piston 303 to make it move downward, and the grease enters the delivery chamber 304. When the linkage shaft 404 moves upward, all the flow limiting ports 403 on the flow limiting tube 402 are exposed outside the liquid inlet tube 308. 03 are exposed to the outside. When the grease enters the liquid inlet chamber 305, the first spring 407 does not generate potential energy, that is, the movement distance of the piston 303 is equal to the movement distance of the linkage shaft 404. When the connecting shaft 109 moves to make the first shift gear 110 disengage from the first reduction gear 106 and the second shift gear 111 engage with the second reduction gear 107, the second screw rod 401 can be rotated to allow the second screw rod 401 to move the flow limiting tube 402 through the force of the thread, and part of the flow limiting port on the limit tube 403 and the liquid inlet pipe 308 are sleeved to reduce the area of ​​the flow restriction port 403 and thus reduce the flow rate. When the linkage shaft 404 moves upward, due to the reduction of the flow rate, the negative pressure force in the liquid inlet chamber 305 overcomes the force of the first spring 407, allowing the first spring 407 to stretch. When the linkage shaft 404 moves to the preset position, the first inlet port and the limit rod 406 can drive the piston 303 to move, that is, the distance moved by the piston 303 is less than the distance moved by the linkage shaft 404, and the amount of lubricating grease delivered is relatively large. It should be reduced, so as to achieve the purpose that when the second shift gear 111 is meshed with the second reduction gear 107, the amount of grease delivered to the connecting shaft 109 is less than the amount of grease when the first shift gear 110 is meshed with the first reduction gear 106; further, when the connecting tube 202 rotates following the connecting shaft 109 through the limit bar 203, the rotating shaft 411 can be rotated through the chain transmission mechanism 412, and the rotation of the rotating shaft 411 can make the linkage shaft 404 reciprocate up and down through the connecting rod 413.

[0029] As a further solution of the present invention, a second spring 408 is connected between the second screw rod 401 and the first connecting frame 400, a guide frame 409 is connected to the bottom of the liquid inlet pipe 308, a traction rope 410 is connected to the connecting plate 201, and one end of the traction rope 410 is passed around the guide frame 409 and wound around the second screw rod 401; By setting a traction rope 410, when the telescopic shaft of the hydraulic cylinder 200 moves to move the connecting shaft 109 through the connecting plate 201, so that the first shift gear 110 is disengaged from the first shift gear 110 and the second shift gear 111 is engaged with the second reduction gear 107, the movement of the connecting plate 201 can pull the traction rope 410, and the traction rope 410 can pull the second screw rod 401 through the guidance of the guide frame 409. The second screw rod 401 is subjected to force to generate rotation to release the traction rope 410, so as to achieve the purpose of moving the flow limiting tube 402 toward the first connecting frame 400 through the rotation of the second screw rod 401.

[0030] As a further solution of the present invention, the one-way valve mechanism 309 includes a second connecting frame 310 connected to the liquid inlet pipe 308, the pressure pipe 307 and the liquid delivery pipe 306, the second connecting frame 310 is slidably connected to a limit shaft 311, a third spring 312 is connected between the limit shaft 311 and the second connecting frame 310, and a baffle 313 is connected to the limit shaft 311; By setting the third spring 312, taking the liquid inlet pipe 308 as an example, when positive pressure is generated in the liquid inlet chamber 305, the limit shaft 311 can limit the position of the baffle 313 to keep the liquid inlet pipe 308 closed. When negative pressure is generated in the liquid inlet chamber 305, the baffle 313 is forced to move, separate from the liquid inlet pipe 308, and stretch the third spring 312, so that grease can enter the liquid inlet chamber 305 through the channel between the baffle 313 and the liquid inlet pipe 308, thereby achieving the purpose of unidirectional liquid inflow or outflow.

[0031] As a further solution of the present invention, the filter unit 114 includes a filter frame 500 connected to the reducer housing 100, and a filter screen 501 is provided on the filter frame 500; By providing the filter 501 , the lubricating grease can be filtered by the filter 501 , and the wear particles generated when lubricating each gear are filtered out, so as to ensure that the lubricating grease subsequently transported to the connecting shaft 109 or the pipeline rack 101 is relatively clean.

[0032] As a further solution of the present invention, the delivery part 115 includes a pump 502 connected to the grease storage cavity 116, and the liquid outlet end of the pump 502 is connected to a delivery pipeline 503, and the delivery pipeline 503 is connected to the pipeline rack 101; By setting up the pump 502, when in use, the pump 502 can transport the liquid in the grease storage cavity 116 to the pipe rack 101, and the nozzle 102 can spray it onto the transmission gear 108, the first reduction gear 106 and the second reduction gear 107 to accurately lubricate them, and the amount of grease transported can be adjusted by controlling the power of the pump 502 to avoid the problem of excessive amount of lubricating grease.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder shift reducer, characterized in that: include: A reducer housing (100), wherein a pipe rack (101) is provided on the reducer housing (100), and a plurality of nozzles (102) are provided at the bottom of the pipe rack (101); A transmission shaft (103), an input shaft (104) and an output shaft (105) arranged in the reducer housing (100); A first reduction gear (106) and a second reduction gear (107) are provided on the transmission shaft (103); a transmission gear (108) meshing with each other is provided on the output shaft (105) and the input shaft (104); the transmission gear (108), the first reduction gear (106) and the second reduction gear (107) correspond to the positions of the nozzle (102); A connecting shaft (109) provided at one end of the input shaft (104), wherein a first shifting gear (110) and a second shifting gear (111) are provided on the connecting shaft (109); A lubrication opening (112) is provided on the first shift gear (110) and the second shift gear (111), and a lubrication port (113) is provided on the connecting shaft (109) and is in communication with the lubrication opening (112). The lubrication port (113) is in communication with the connecting shaft (109); A hydraulic shifting portion provided between the reducer housing (100) and the connecting shaft (109), used for moving the position of the connecting shaft (109); when the connecting shaft (109) is in a first preset position, the lubrication port (113) communicating with the first shift gear (110) can be opened, and the lubrication port (113) communicating with the second shift gear (111) can be closed; when the connecting shaft (109) is in a second preset position, the lubrication port (113) communicating with the first shift gear (110) can be closed, and the lubrication port (113) communicating with the second shift gear (111) can be closed; A filter portion (114) provided on the reducer housing (100) is used to filter lubricating grease, and a grease storage cavity (116) is formed between the filter portion (114) and the reducer housing (100); A conveying portion (115) disposed between the reducer housing (100) and the pipe rack (101), used for conveying lubricating grease in the grease storage cavity (116) to the pipe rack (101); a lubricating component provided between the reducer housing (100) and the connecting shaft (109), used for transferring lubricating grease in the grease storage cavity (116) into the connecting shaft (109), wherein the lubricating component is capable of conveying grease when the connecting shaft (109) rotates; When the first shift gear (110) is meshed with the first reduction gear (106), the lubricating component is capable of delivering a first preset amount of grease to the connecting shaft (109); and when the second shift gear (111) is meshed with the second reduction gear (107), the lubricating component is capable of delivering a second preset amount of grease to the connecting shaft (109).

2. A hydraulic cylinder shift reducer according to claim 1, characterized in that: The hydraulic shifting unit comprises a hydraulic cylinder (200) connected to the reducer housing (100); one end of the telescopic shaft of the hydraulic cylinder (200) is connected to a connecting plate (201) extending into the reducer housing (100); the connecting plate (201) is rotatably connected to the connecting shaft (109); the connecting shaft (109) is slidably connected to the input shaft (104); a connecting pipe (202) is rotatably connected to the reducer housing (100); one end of the connecting pipe (202) is connected to a limit bar (203) slidably connected to the connecting shaft (109).

3. A hydraulic cylinder shift reducer according to claim 2, characterized in that: The hydraulic shifting unit further comprises a support rod (204) connected to one end of the connecting pipe (202); an outer side wall of the support rod (204) is provided with a side opening (205); a rack (206) is connected in the side opening (205); a bracket (207) is connected in the lubrication port (113); a first screw rod (208) is rotatably connected to the bracket (207); a gear member (209) meshing with the rack (206) is connected to the first screw rod (208); and a blocking block (210) slidably connected to the connecting shaft (109) is threadedly connected to the first screw rod (208).

4. A hydraulic cylinder shift reducer according to claim 2, characterized in that: A bellows (211) is connected between the connecting pipe (202) and the connecting shaft (109), and a cover (212) covering the hydraulic cylinder (200) is connected to one side of the reducer housing (100).

5. The hydraulic cylinder shift reducer according to claim 2, characterized in that: The lubricating component comprises a connecting ring (300) rotatably connected to the connecting pipe (202); the inner wall of the connecting pipe (202) is provided with a plurality of openings (301) connected to the connecting ring (300); the bottom of the grease storage cavity (116) is connected to a lubricating pipe (302); a piston (303) is provided in the lubricating pipe (302); the piston (303) separates the lubricating pipe (302) into a conveying chamber (304) and a liquid inlet chamber (305); the conveying chamber (304) and the connecting ring (305) are connected to each other. 00), a liquid infusion pipeline (306) is connected between the delivery chamber (304) and the liquid inlet chamber (305), a plurality of pressure pipelines (307) are connected between the delivery chamber (304) and the liquid inlet chamber (305), a liquid inlet pipe (308) is connected between the liquid inlet chamber (305) and the grease storage cavity (116), and a one-way valve mechanism (309) is provided at one end of the liquid inlet pipe (308) at the liquid inlet chamber (305), at one end of the pressure pipeline (307) at the delivery chamber (304), and at one end of the liquid infusion pipeline (306) at the delivery chamber (304).

6. A hydraulic cylinder shift reducer according to claim 5, characterized in that: The liquid inlet pipe (308) is connected to a first connecting frame (400), a second screw rod (401) is rotatably connected to the first connecting frame (400), a flow limiting pipe (402) slidably connected to the liquid inlet pipe (308) is threadedly connected to the second screw rod (401), a plurality of flow limiting openings (403) are provided on the outer wall of the flow limiting pipe (402), a linkage shaft (404) is slidably connected to the top of the lubrication pipe (302), a limiting opening (405) is provided at the bottom of the linkage shaft (404), a limiting rod (406) connected to the piston (303) is slidably connected to the limiting opening (405), and a first spring (407) is connected between the linkage shaft (404) and the piston (303); A rotating shaft (411) is rotatably connected to the reducer housing (100), a chain transmission mechanism (412) is connected between the rotating shaft (411) and the connecting pipe (202), a connecting rod (413) is rotatably connected to the rotating shaft (411), and the linkage shaft (404) is rotatably connected to the bottom of the connecting rod (413).

7. The hydraulic cylinder shift reducer according to claim 6, characterized in that: A second spring (408) is connected between the second screw rod (401) and the first connecting frame (400), a guide frame (409) is connected to the bottom of the liquid inlet pipe (308), a traction rope (410) is connected to the connecting plate (201), and one end of the traction rope (410) passes around the guide frame (409) and is wound around the second screw rod (401).

8. The hydraulic cylinder shift reducer according to claim 5, characterized in that: The one-way valve mechanism (309) comprises a second connecting frame (310) connected to the liquid inlet pipe (308), the pressure pipe (307) and the liquid delivery pipe (306); a limit shaft (311) is slidably connected to the second connecting frame (310); a third spring (312) is connected between the limit shaft (311) and the second connecting frame (310); and a baffle (313) is connected to the limit shaft (311).

9. The hydraulic cylinder shift reducer according to claim 1, characterized in that: The filter portion (114) comprises a filter frame (500) connected to the reducer housing (100), and a filter screen (501) is provided on the filter frame (500).

10. The hydraulic cylinder shift reducer according to claim 1, characterized in that: The delivery portion (115) comprises a pump (502) connected to the grease storage cavity (116); a liquid outlet end of the pump (502) is connected to a delivery pipeline (503); and the delivery pipeline (503) is in communication with the pipeline rack (101).

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