Cooling device for gearbox

Abstract

The present invention discloses a cooling device for a gearbox, comprising an oil circulation mechanism, the oil circulation mechanism including a circulating oil pipe and a hydraulic oil pump, the circulating oil pipe including an oil outlet pipe connected to the bottom of the case and an oil return pipe connected to the top of the case, the oil return pipe being connected to the oil inlet of the hydraulic oil pump, and the oil return pipe being connected to the oil outlet of the hydraulic oil pump, a refrigerator being provided on one side of the case, the refrigerator including a condenser pipe wound around the oil return pipe, the oil outlet pipe being provided with a control mechanism, the control mechanism including a fastening clamp sleeved around the oil outlet pipe, the fastening clamp including an annular portion with an open end and ear plates fixed to both ends of the annular portion, a high thermal expansion element being provided on the inner side of the annular portion, the high thermal expansion element increasing in volume upon heating, the high thermal expansion element being coated on the outer circumference of the oil outlet pipe, a detection assembly being provided on the ear plates, the detection assembly being used to control the start and stop of the refrigerator. The present invention has the effect of reducing energy loss in cooling the gearbox.

Description

Technical Field

[0001] The present invention relates to the field of gearbox auxiliary devices, and in particular to a cooling device for a gearbox. Background Art

[0002] With the development of industry, the application of gearboxes is gradually increasing. Its main functions are to adjust the speed of the power source, change the transmission direction, change the torque and distribute power, etc. It is widely used in many industries such as machine tools, conveying equipment, mixing equipment, wind power generation, etc.

[0003] In the related art, a Chinese utility model patent with announcement number CN201599367U discloses a speed-changing gearbox, comprising a box body, an input shaft and an output shaft; an input duplex gear is axially slidably provided on the input shaft, an output duplex gear is axially slidably provided on the output shaft, a transition shaft is provided between the input shaft and the output shaft, and a first duplex gear and a second duplex gear are provided on the transition shaft.

[0004] Regarding the above-mentioned related technologies, in order to provide lubrication and cooling effects for the gears in the box, lubricating oil is usually provided in the box. However, as the gears in the box rotate at high speed, the oil temperature of the lubricating oil in the box will gradually increase due to the friction between the gears, which will affect the transmission of the gears inside the gearbox, accelerate the wear of the gears, and shorten the service life of the gearbox. Common refrigeration equipment is a refrigerator. The condenser on the refrigerator is wrapped around the oil pipe to cool the lubricating oil in the pipe, but the refrigerator usually works continuously, thereby increasing the energy loss of the gearbox cooling process. Summary of the Invention

[0005] In order to reduce the energy loss of cooling the gearbox, the present application provides a cooling device for the gearbox.

[0006] The cooling device for the gearbox provided in this application adopts the following technical solution:

[0007] The cooling device for the gear box includes an oil circulation mechanism connected to the box body, the oil circulation mechanism includes a circulating oil pipe connected to the box body and a hydraulic oil pump arranged on the circulating oil pipe, the circulating oil pipe includes an oil outlet pipe connected to the bottom of the box body and an oil return pipe connected to the top of the box body, the oil return pipe is connected to the oil inlet end of the hydraulic oil pump, the oil return pipe is connected to the oil outlet end of the hydraulic oil pump, a refrigerator is provided on one side of the box body, and the refrigerator includes a cooling device wound around the oil return pipe. Condensate pipe, the oil outlet pipe is provided with a control mechanism, the control mechanism includes a fastening clamp sleeved on the outside of the oil outlet pipe, the fastening clamp includes an annular portion with an opening on one side and ear plate portions respectively fixed to the two ends of the annular portion, a high thermal expansion component is provided on the inner side surface of the annular portion, the volume of the high thermal expansion component increases after being heated, the high thermal expansion component is coated on the outer peripheral surface of the oil outlet pipe, the ear plate portion is provided with a detection component for detecting the opening and closing of the two ear plate portions, and the detection component is used to control the start and stop of the refrigerator.

[0008] By adopting the above technical solution, when the gearbox is operating, the hydraulic oil pump can extract the lubricating oil in the box through the oil outlet pipe and re-inject it into the box through the return oil pipe. As the gearbox operates, the gears in the gearbox rub against each other, causing the temperature of the lubricating oil in the box to gradually increase. Therefore, the wall temperature of the oil outlet pipe will also increase accordingly, causing the high-temperature expansion component in the control mechanism to expand, and the annular portion to open, so that the ear plate portions fixed at the two ends of the annular portion are separated from each other, so that the detection component controls the refrigerator to start when the lubricating oil temperature is too high, and then the condenser cools the return oil pipe and the lubricating oil in the pipe, so that the lubricating oil returning to the box is in a low-temperature state, achieving the effect of cooling the gearbox, and when the temperature of the lubricating oil in the gearbox drops, the temperature of the oil outlet pipe also gradually drops. At this time, the high-temperature expansion component contracts, causing the two ear plate portions to move closer to each other, so that the detection component controls the refrigerator to automatically stop running after the lubricating oil temperature drops, reducing the energy loss in the cooling process of the gearbox.

[0009] Preferably, a connecting hole is provided on the ear plate portion, and the detection assembly includes a threaded rod passing through the connecting holes on the two ear plate portions, one end of the threaded rod is threadedly connected to a nut, and the nut abuts against the ear plate portion, and the other end of the threaded rod is fixedly connected to a baffle, and the side of the baffle close to the ear plate portion is fixedly connected to a detection tube, a detection rod is slidably provided in the detection tube, the end of the detection rod away from the baffle is hingedly connected to an abutment plate, and the abutment plate abuts against the ear plate portion, and a thrust assembly is provided between the abutment plate and the baffle to prevent the abutment plate from approaching the baffle, a fixed contact piece is embedded on the inner wall of the detection tube, and a dynamic contact piece that can abut against the fixed contact piece is embedded on the outer circumference of the detection rod, and a power supply is provided on one side of the refrigerator, the dynamic contact piece is electrically connected to one of the electrodes of the power supply, the other electrode of the power supply is electrically connected to one of the terminal posts of the refrigerator, and the other terminal post of the refrigerator is electrically connected to the fixed contact piece.

[0010] By adopting the above technical solution, when the wall temperature of the oil outlet pipe rises, the high-thermal expansion component in the control mechanism expands, stretching the annular portion, so that the two ear plate portions move away from each other, and under the resistance of the nut, the ear plate portion on the side away from the nut can push the abutment plate, so that the abutment plate overcomes the thrust of the thrust assembly and moves in the direction close to the baffle, thereby causing the detection rod to slide into the detection tube, causing the moving contact piece to contact the fixed contact piece, and then the refrigerator starts when the lubricating oil temperature is too high, and when the lubricating oil temperature in the gear box drops, the high-thermal expansion component contracts, and under the thrust of the thrust assembly, the detection rod slides out of the detection tube, causing the moving contact piece to disengage from the fixed contact piece, thereby causing the refrigerator to automatically stop running after the lubricating oil temperature drops.

[0011] Preferably, a limiting groove is provided on the inner wall of the detection tube, and a limiting block is fixedly connected to the outer circumference of the detection tube, and the limiting block is slidably arranged in the limiting groove.

[0012] By adopting the above technical solution, the limiting block is slidably arranged in the limiting groove, thereby preventing the detection rod from sliding out of the detection tube, thereby improving the stability of the detection assembly.

[0013] Preferably, the thrust assembly includes a thrust spring, which is sleeved outside the detection tube and the detection rod, one end of the thrust spring abuts against the side of the baffle close to the ear plate portion, and the other end of the thrust spring abuts against the side of the abutment plate away from the ear plate portion.

[0014] By adopting the above technical solution, the thrust spring is sleeved outside the detection tube and the detection rod, one end of the thrust spring abuts against the side of the baffle close to the ear plate, and the other end of the thrust spring abuts against the side of the abutment plate away from the ear plate, thereby preventing the abutment plate from moving toward the baffle.

[0015] Preferably, the high thermal expansion member is an annular structure, one side of the high thermal expansion member is open, and the opening of the high thermal expansion member faces between the two ear plate parts.

[0016] By adopting the above technical solution, the opening of the high-thermal expansion component is directed toward between the two ear plate portions. Under the elastic force of the thrust spring, the annular portion can prevent the inner circumference of the high-thermal expansion component from separating from the outer circumference of the oil outlet pipe, so that the high-thermal expansion component can more stably contact the outer circumference of the oil outlet pipe, so that the detection device can more accurately detect the temperature of the oil outlet pipe.

[0017] Preferably, a filter is provided on one side of the hydraulic oil pump, and the oil outlet pipe is connected to the hydraulic oil pump through the filter. The filter includes a barrel-shaped shell and a cover body threadedly matched with the barrel-shaped shell. A filter screen is vertically provided in the barrel-shaped shell, and the filter screen separates the barrel-shaped shell into left and right sides. The oil outlet pipe and the oil inlet end of the hydraulic oil pump are both connected to the top surface of the cover body, and the oil outlet pipe and the oil inlet end of the hydraulic oil pump are symmetrically arranged on the cover body.

[0018] By adopting the above technical solution, the filter is vertically arranged in the barrel-shaped shell, so that the filter divides the barrel-shaped shell into left and right sides, and the oil outlet pipe and the oil inlet end of the hydraulic oil pump are symmetrically arranged on the cover body. When the cover body and the barrel-shaped shell are tightened, the filter can filter the lubricating oil, thereby reducing the possibility of impurities generated by friction between gears entering the gear box again and causing damage to the tooth surface of the gear.

[0019] Preferably, two mounting grooves are provided on the inner peripheral wall of the barrel-shaped shell, the mounting grooves are connected to the top surface and the inner bottom wall of the barrel-shaped shell, and the two sides of the filter are respectively inserted into the two mounting grooves.

[0020] By adopting the above technical solution, the two sides of the filter are respectively inserted into the two installation grooves, thereby preventing the filter from rotating along the axial direction of the barrel-shaped shell in the barrel-shaped shell, making the position of the filter more stable, and thus enabling the filter to filter the lubricating oil more stably.

[0021] Preferably, a slot is provided on the top surface of the filter screen, and the two sides of the slot are connected to the two side surfaces of the filter screen. A sealing strip is provided in the slot for vertical sliding, and the two ends of the sealing strip are flush with the two sides of the filter screen. An elastic component that hinders the sealing strip from moving downward is provided in the slot, and the top surface of the sealing strip is used to contact the inner top wall of the cover body.

[0022] By adopting the above technical solution, when the cover body and the barrel-shaped shell are tightened, the sealing strip is tightly pressed against the inner top wall of the cover body under the obstruction of the elastic component, so that the sealing strip can prevent the oil on both sides of the filter from flowing into each other, so that the lubricating oil on the side connected to the oil outlet pipe can be stably filtered through the filter, thereby improving the filtration efficiency.

[0023] Preferably, the elastic component includes a vertical spring, one end of the vertical spring is fixed to the bottom wall of the slot, and the other end of the vertical spring abuts against the bottom surface of the sealing strip.

[0024] By adopting the above technical solution, one end of the vertical spring is fixed to the bottom wall of the slot, and the other end of the vertical spring abuts against the bottom surface of the sealing strip, thereby preventing the sealing strip from sliding downward.

[0025] Preferably, a retaining groove is provided on the inner wall of the slot, a retaining block is fixedly connected to the side surface of the sealing strip, and the retaining block is slidably disposed in the retaining groove.

[0026] By adopting the above technical solution, the stopper is slidably arranged in the stop groove, preventing the sealing strip from escaping from the slot, so that the sealing strip can be stably located on the top of the filter screen.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When the gearbox is operating, the hydraulic oil pump can extract the lubricating oil in the box through the oil outlet pipe and re-inject it into the box through the return oil pipe. As the gearbox operates, the gears in the gearbox rub against each other, causing the temperature of the lubricating oil in the box to gradually increase. Therefore, the wall temperature of the oil outlet pipe will also increase accordingly, causing the high-temperature expansion member in the control mechanism to expand, and the annular portion to open, so that the ear plates fixed at the two ends of the annular portion move away from each other, so that the detection component controls the refrigerator to start when the lubricating oil temperature is too high, and then the condenser pipe cools the return oil pipe and the lubricating oil in the pipe, so that the lubricating oil returning to the box is in a low-temperature state, thereby achieving the effect of cooling the gearbox, and when the temperature of the lubricating oil in the gearbox drops, the temperature of the oil outlet pipe also gradually drops. At this time, the high-temperature expansion member contracts, causing the two ear plates to move closer to each other, so that the detection component controls the refrigerator to automatically stop running after the lubricating oil temperature drops, thereby reducing the energy loss in the cooling process of the gearbox;

[0029] 2. When the wall temperature of the oil outlet pipe rises, the high-temperature expansion member in the control mechanism expands, stretching the annular portion, causing the two ear plates to move away from each other. Under the interference of the nut, the ear plate on the side away from the nut can push the abutment plate, causing the abutment plate to overcome the thrust of the thrust assembly and move toward the baffle, thereby causing the detection rod to slide into the detection tube, causing the moving contact piece to contact the fixed contact piece, and thus the refrigerator to start when the lubricating oil temperature is too high. When the lubricating oil temperature in the gearbox drops, the high-temperature expansion member contracts. Under the thrust of the thrust assembly, the detection rod slides out of the detection tube, causing the moving contact piece to disengage from the fixed contact piece, thereby causing the refrigerator to automatically stop when the lubricating oil temperature drops.

[0030] 3. The filter is vertically arranged in the barrel-shaped shell, so that the filter divides the barrel-shaped shell into left and right sides. The oil outlet pipe and the oil inlet end of the hydraulic oil pump are symmetrically arranged on the cover. When the cover and the barrel-shaped shell are tightened, the filter can filter the lubricating oil, thereby reducing the possibility of impurities generated by friction between gears entering the gear box again and causing damage to the tooth surface of the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the cooling device in the embodiment of the present application.

[0032] Figure 2 It is a structural diagram of the control mechanism in the embodiment of the present application.

[0033] Figure 3 It is a cross-sectional view of the high thermal expansion component in the embodiment of the present application.

[0034] Figure 4 It is a cross-sectional view of the detection tube and the detection rod in the embodiment of the present application.

[0035] Figure 5 It is a cross-sectional view of the filter in the embodiment of the present application.

[0036] Figure 6 yes Figure 5 A partial enlarged view of point A in the middle.

[0037] Explanation of reference numerals: 1. oil circulation mechanism; 11. circulating oil pipe; 111. oil outlet pipe; 1111. retaining ring; 1112. screw cap; 112. oil return pipe; 12. hydraulic oil pump; 2. control mechanism; 21. fastening clamp; 211. annular portion; 212. ear plate portion; 2121. connecting hole; 22. high thermal expansion member; 221. inner arc plate; 222. end plate; 223. side plate; 224. elastic membrane; 225. high thermal expansion material; 23. detection assembly; 231. threaded rod; 232. nut; 233. detection tube; 2331. limiting groove; 233 2. Fixed contact piece; 234. Detection rod; 2341. Moving contact piece; 2342. Limit block; 235. Baffle; 236. Abutment plate; 2361. Connecting hole; 237. Thrust assembly; 2371. Thrust spring; 238. Power supply; 3. Refrigerator; 31. Condenser; 4. Filter; 41. Barrel-shaped shell; 411. Mounting groove; 42. Cover; 421. Externally threaded pipe; 43. Filter screen; 431. Slot; 432. Stop groove; 44. Sealing strip; 441. Block; 45. Elastic assembly; 451. Vertical spring; 5. Box; 100. Cooling device. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 This application is described in further detail.

[0039] The present application embodiment discloses a cooling device for a gear box. Figure 1 and Figure 2 As shown, the cooling device 100 includes an oil circulation mechanism 1, a control mechanism 2 and a refrigerator 3. The oil circulation mechanism 1 includes a circulating oil pipe 11 and a hydraulic oil pump 12. The circulating oil pipe 11 includes an oil outlet pipe 111 and an oil return pipe 112. One end of the oil outlet pipe 111 is connected to the bottom of the housing 5. A filter 4 is provided on the oil outlet pipe 111. The end of the oil outlet pipe 111 away from the housing 5 is connected to the oil inlet of the hydraulic oil pump 12 through the filter 4. One end of the oil return pipe 112 is connected to the top of the housing 5. The end of the oil return pipe 112 away from the housing 5 is connected to the oil inlet of the hydraulic oil pump 12. The oil return pipe 112 is connected to the oil outlet of the hydraulic oil pump 12.

[0040] Reference Figure 1 As shown, the hydraulic oil pump 12 draws the lubricating oil from the tank 5 through the oil outlet pipe 111. After the lubricating oil passes through the filter 4, the hydraulic oil pump 12 injects the lubricating oil back into the tank 5 through the oil return pipe 112. The refrigerator 3 is arranged on one side of the tank 5 and includes a condenser 31, which is spirally wound around the outside of the oil return pipe 112 to cool the lubricating oil.

[0041] Reference Figure 2As shown, the control mechanism 2 includes a fastening clamp 21, a high-heat expansion member 22 and a detection assembly 23. The fastening clamp 21 is sleeved on the outside of the oil outlet pipe 111. The fastening clamp 21 includes an annular portion 211 and an ear plate portion 212. The annular portion 211 is sleeved on the outside of the oil outlet pipe 111, and the top side of the annular portion 211 is open. The ear plate portion 212 is located on the annular portion 211 and is welded and fixed in two pieces. The two ear plate portions 212 are both located on the outer circumference of the annular portion 211. The two ear plate portions 212 are respectively located at both ends of the annular portion 211. The side surfaces of the ear plate portions 212 that are close to each other are flush with the two end faces of the annular portion 211, and a connecting hole 2121 is provided on the ear plate portion 212. The high-heat expansion member 22 is arranged on the inner side of the annular portion 211, and the high-heat expansion member 22 is coated on the outer circumference of the oil outlet pipe 111.

[0042] Reference Figure 2 and Figure 3 As shown, the high-thermal expansion member 22 is an annular structure and includes an inner arc plate 221, an end plate 222, a side plate 223, an elastic membrane 224, and a high-thermal expansion material 225. The top of the inner arc plate 221 is open, and the two end surfaces of the inner arc plate 221 are flush with the two end surfaces of the annular portion 211. The inner circumference of the inner arc plate 221 is in contact with the outer circumference of the oil outlet pipe 111. The side plates 223 and the end plates 222 are both welded and fixed on the inner arc plate 221. The two side plates 223 are respectively located on both sides of the outer circumference of the inner arc plate 221. The side plates 223 are annular plates with an open top. The inner circumference of the side plates 223 is in contact with the outer circumference of the inner arc plate 221. The outer circumference of the side plates 223 is in contact with the circumference of the annular portion 211. The two end plates 222 are both located on the outer circumference of the inner arc plate 221. The two end plates 222 are respectively located at both ends of the inner arc plate 221. The side surfaces of the two end plates 222 that are close to each other are flush with the two end surfaces of the inner arc plate 221. The two sides of the end plates 222 are respectively welded and fixed to the side surfaces of the two side plates 223 that are close to each other. The elastic membrane 224 is fixed between the two side plates 223. The elastic membrane 224 is respectively fixed to the inner side surfaces of the side plates 223 and the end plates 222, so that the interior of the high thermal expansion member 22 forms a closed structure. The high thermal expansion material 225 is filled between the elastic membrane 224 and the inner arc plate 221. In this embodiment, the high thermal expansion material 225 is mercury.

[0043] Reference Figure 2 and Figure 4As shown, the detection assembly 23 includes a threaded rod 231, a nut 232, a detection tube 233, a detection rod 234, a baffle 235, an abutment plate 236, and a thrust assembly 237. The threaded rod 231 passes through the connection holes 2121 in the two lugs 212. The diameter of the connection holes 2121 is larger than the diameter of the threaded rod 231. The nut 232 is threadedly connected to the threaded rod 231. The nut 232 is located at one end of the threaded rod 231, and the side of the nut 232 abuts the side of one lug 212 away from the other lug 212. The baffle 235 is welded to the end of the threaded rod 231 away from the nut 232.

[0044] Reference Figure 2 and Figure 4 As shown, two detection tubes 233 are welded and fixed on the side of the baffle 235 near the ear plate portion 212. The two detection tubes 233 are symmetrically distributed on both sides of the threaded rod 231 in the horizontal direction. Two detection rods 234 are provided, and the two detection rods 234 are slidably set in the two detection tubes 233. The ends of the two detection rods 234 away from the baffle 235 are hinged to the side of the baffle 235 near the baffle 235. The abutment plate 236 abuts the ear plate portion 212 on the side near the baffle 235. A connecting hole 2361 is opened on the side of the abutment plate 236, and the threaded rod 231 passes through the connecting hole 2361. The diameter of the connecting hole 2361 is larger than the diameter of the threaded rod 231.

[0045] Reference Figure 2 and Figure 4 As shown, a limiting groove 2331 is provided on the inner wall of the detection tube 233, and the length direction of the limiting groove 2331 is parallel to the length direction of the detection tube 233. A limiting block 2342 is fixedly connected to the outer peripheral surface of the detection tube 233, and the limiting block 2342 is slidably set in the limiting groove 2331.

[0046] Reference Figure 1 and Figure 4 As shown, a fixed contact piece 2332 is embedded on the inner wall of the detection tube 233 close to the side of the box body 5, and a movable contact piece 2341 is embedded on the outer peripheral surface of the detection rod 234 close to the side of the box body 5. A power supply 238 is provided on one side of the refrigerator 3, and the movable contact piece 2341 is electrically connected to one of the electrodes of the power supply 238, and the other electrode of the power supply 238 is electrically connected to one of the terminals of the refrigerator 3, and the other terminal of the refrigerator 3 is electrically connected to the fixed contact piece 2332.

[0047] Reference Figure 2 and Figure 4As shown, the thrust assembly 237 includes a thrust spring 2371, which is sleeved around the detection tube 233 and the detection rod 234. One end of the thrust spring 2371 abuts against the side of the baffle 235 near the ear plate portion 212, and the other end of the thrust spring 2371 abuts against the side of the abutment plate 236 away from the ear plate portion 212. Under the elastic force of the thrust spring 2371, the abutment plate 236 abuts against the ear plate portion 212, and the movable contact piece 2341 is separated from the fixed contact piece 2332. When the temperature of the lubricating oil rises, the wall temperature of the oil outlet pipe 111 rises, the high thermal expansion component 22 expands, and the ear plate portion 212 on the side away from the nut 232 can push the abutment plate 236, so that the abutment plate 236 overcomes the thrust of the thrust assembly 237 and moves toward the baffle 235, thereby causing the detection rod 234 to slide into the detection tube 233, so that the moving contact piece 2341 is connected with the fixed contact piece 2332.

[0048] Reference Figure 1 and Figure 5 As shown, the filter 4 is arranged near one side of the hydraulic oil pump 12, and the filter 4 includes a barrel-shaped shell 41, a cover 42 and a filter screen 43. The inner circumferential surface of the cover 42 is threadedly connected to the top of the barrel-shaped shell 41. When the cover 42 and the barrel-shaped shell 41 are tightened, the top surface of the barrel-shaped shell 41 contacts the inner top wall of the cover 42. Two mounting grooves 411 are provided on the inner circumferential wall of the barrel-shaped shell 41. The mounting grooves 411 are connected to the top surface and the inner bottom wall of the barrel-shaped shell 41. The two mounting grooves 411 are symmetrically arranged on the barrel-shaped shell 41. The filter screen 43 is vertically arranged in the barrel-shaped shell 41. The filter screen 43 divides the barrel-shaped shell 41 into left and right sides. The two side surfaces of the filter screen 43 respectively contact the two inner walls of the two mounting grooves 411 that are away from each other.

[0049] Reference Figure 1 and Figure 5 As shown, the oil outlet pipe 111 and the oil inlet end of the hydraulic oil pump 12 are both connected to the top surface of the cover body 42, and an external threaded tube 421 is welded and fixed on the cover body 42. The two external threaded tubes 421 are symmetrically arranged on the cover body 42, and the external threaded tubes 421 are communicated with the inner side of the cover body 42. The outer peripheral surface of the tube body of the oil inlet end of the hydraulic oil pump 12 and the outer peripheral surface of the end of the oil outlet pipe 111 away from the box body 5 are fixedly connected with a retaining ring 1111, and the outer peripheral surface of the tube body of the oil inlet end of the hydraulic oil pump 12 and the oil outlet pipe 111 are both provided with a screw cover 1112, and the inner peripheral surfaces of the two screw covers 1112 are respectively threadedly connected to the two external threaded tubes 421. When the rotary cover 1112 is tightened with the external threaded tube 421, the top surface of the retaining ring 1111 conflicts with the inner top wall of the rotary cover 1112, and the bottom surface of the retaining ring 1111 conflicts with the top end surface of the external threaded tube 421. The pipe body and the oil outlet pipe 111 at the oil inlet end of the hydraulic oil pump 12 both pass through the cover body 42 and extend into the cup-shaped shell and are located on both sides of the filter screen 43.

[0050] Reference Figure 5 and Figure 6 As shown, a slot 431 is defined on the top surface of the filter 43. Both sides of the slot 431 communicate with the two side surfaces of the filter 43. A sealing strip 44 slides vertically within the slot 431, with both ends of the sealing strip 44 flush with the sides of the filter 43. An elastic assembly 45 is disposed within the slot 431 to prevent the sealing strip 44 from moving downward. The top surface of the sealing strip 44 is configured to abut against the inner top wall of the cover 42. The elastic assembly 45 includes five vertical springs 451, which are evenly distributed along the length of the sealing strip 44 within the slot 431. One end of each vertical spring 451 is fixed to the bottom wall of the slot 431, while the other end abuts against the bottom surface of the sealing strip 44. A retaining groove 432 is defined on the inner wall of the slot 431. A stopper 441 is fixedly connected to the side of the sealing strip 44 and vertically slides within the retaining groove 432.

[0051] The implementation principle of the cooling device for the gearbox in the embodiment of the present application is as follows: when the wall temperature of the oil outlet pipe 111 increases, the high thermal expansion material 225 filled in the high thermal expansion member 22 expands, stretching the annular portion 211 so that the two ear plate portions 212 move away from each other. Under the resistance of the nut 232, the ear plate portion 212 on the side away from the nut 232 can push the abutment plate 236, so that the abutment plate 236 overcomes the thrust of the thrust spring 2371 and moves towards the baffle 235, thereby causing the detection rod 234 to slide into the detection tube 233, causing the moving contact piece 2341 to contact the fixed contact piece 2332, and then causing the refrigerator 3 to automatically start when the lubricating oil temperature is too high, so that the condenser 31 cools the return oil pipe 112 and the lubricating oil in the pipe, thereby reducing the energy loss in the cooling process of the gearbox.

[0052] When the temperature of the lubricating oil in the gear box drops, the high thermal expansion component 22 contracts. Under the thrust of the thrust assembly 237, the detection rod 234 slides out of the detection tube 233, causing the contact piece to disengage from the fixed contact piece 2332, thereby causing the refrigerator 3 to automatically stop running after the lubricating oil temperature drops.

[0053] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A cooling device for a gearbox, characterized in that: The invention relates to a hydraulic oil pump (12) comprising an oil circulation mechanism (1) connected to a housing (5), wherein the oil circulation mechanism (1) comprises a circulating oil pipe (11) connected to the housing (5) and a hydraulic oil pump (12) arranged on the circulating oil pipe (11), wherein the circulating oil pipe (11) comprises an oil outlet pipe (111) connected to the bottom of the housing (5) and an oil return pipe (112) connected to the top of the housing (5), wherein the oil return pipe (112) is connected to the oil inlet end of the hydraulic oil pump (12), and the oil return pipe (112) is connected to the oil outlet end of the hydraulic oil pump (12), and a refrigerator (3) is provided on one side of the housing (5), wherein the refrigerator (3) comprises a condensing pipe (31) wound around the oil return pipe (112), and the oil outlet pipe (111) is connected to the oil inlet end of the hydraulic oil pump (12). A control mechanism (2) is provided on the pipe (111), the control mechanism (2) comprising a fastening clamp (21) sleeved on the outside of the oil outlet pipe (111), the fastening clamp (21) comprising an annular portion (211) with an opening on one side and ear plate portions (212) respectively fixed to both ends of the annular portion (211), a high-heat expansion component (22) is provided on the inner side surface of the annular portion (211), the volume of the high-heat expansion component (22) increases after being heated, the high-heat expansion component (22) is covered on the outer peripheral surface of the oil outlet pipe (111), a detection component (23) for detecting the opening and closing of the two ear plate portions (212) is provided on the ear plate portion (212), and the detection component (23) is used to control the start and stop of the refrigerator (3); The high thermal expansion member (22) is an annular structure, comprising an inner arc plate (221), an end plate (222), a side plate (223), an elastic membrane (224) and a high thermal expansion material (225), wherein the high thermal expansion material (225) is mercury; The top of the inner arc plate (221) is open, the two end surfaces of the inner arc plate (221) are flush with the two end surfaces of the annular portion (211), and the inner circumference of the inner arc plate (221) is in contact with the outer circumference of the oil outlet pipe (111); The side plates (223) and the end plates (222) are both welded and fixed on the inner arc plate (221). The two side plates (223) are respectively located on both sides of the outer peripheral surface of the inner arc plate (221). The side plates (223) are annular plates with an open top. The inner peripheral surface of the side plates (223) fits with the outer peripheral surface of the inner arc plate (221). The outer peripheral surface of the side plates (223) fits with the peripheral surface of the annular portion (211). The two end plates (222) are both located on the outer peripheral surface of the inner arc plate (221). The two end plates (222) are respectively located at both ends of the inner arc plate (221). The side surfaces of the two end plates (222) that are close to each other are flush with the two end surfaces of the inner arc plate (221). The two sides of the end plates (222) are respectively welded and fixed to the side surfaces of the two side plates (223) that are close to each other. The elastic membrane (224) is fixed between the two side plates (223), and the elastic membrane (224) is respectively fixed to the inner side surfaces of the side plates (223) and the end plate (222), so that the interior of the high thermal expansion member (22) forms a closed structure, and the high thermal expansion material (225) is filled between the elastic membrane (224) and the inner arc plate (221); The ear plate portion (212) is provided with a connecting hole (2121), and the detection assembly (23) comprises a threaded rod (231) passing through the connecting holes (2121) on the two ear plate portions (212), one end of the threaded rod (231) is threadedly connected to a nut (232), and the nut (232) abuts against the ear plate portion (212), and the other end of the threaded rod (231) is fixedly connected to a baffle (235), and a detection tube (233) is fixedly connected to the side of the baffle (235) close to the ear plate portion (212), and a detection rod (234) is slidably provided in the detection tube (233), and the end of the detection rod (234) away from the baffle (235) is hinged to an abutment plate (236), and the abutment plate (236) abuts against On the ear plate portion (212), a thrust assembly (237) is provided between the abutting plate (236) and the baffle (235) to prevent the abutting plate (236) from approaching the baffle (235); a fixed contact piece (2332) is embedded on the inner wall of the detection tube (233); a movable contact piece (2341) capable of abutting against the fixed contact piece (2332) is embedded on the outer peripheral surface of the detection rod (234); a power supply (238) is provided on one side of the refrigerator (3); the movable contact piece (2341) is electrically connected to one of the electrodes of the power supply (238); the other electrode of the power supply (238) is electrically connected to one of the terminals of the refrigerator (3); and the other terminal of the refrigerator (3) is electrically connected to the fixed contact piece (2332).

2. The cooling device for a gear box according to claim 1, characterized in that: A limiting groove (2331) is provided on the inner wall of the detection tube (233), a limiting block (2342) is fixedly connected to the outer circumference of the detection tube (233), and the limiting block (2342) is slidably arranged in the limiting groove (2331).

3. The cooling device for a gear box according to claim 1, characterized in that: The thrust assembly (237) includes a thrust spring (2371), which is sleeved on the outside of the detection tube (233) and the detection rod (234). One end of the thrust spring (2371) abuts against the side of the baffle (235) close to the ear plate portion (212), and the other end of the thrust spring (2371) abuts against the side of the abutting plate (236) away from the ear plate portion (212).

4. The cooling device for a gear box according to claim 3, characterized in that: The high-heat expansion component (22) is an annular structure, one side of the high-heat expansion component (22) is open, and the opening of the high-heat expansion component (22) faces between the two ear plate parts (212).

5. The cooling device for a gear box according to claim 1, characterized in that: A filter (4) is provided on one side of the hydraulic oil pump (12), and the oil outlet pipe (111) is connected to the hydraulic oil pump (12) through the filter (4), and the filter (4) includes a barrel-shaped shell (41) and a cover body (42) threadedly matched with the barrel-shaped shell (41), and a filter screen (43) is vertically provided in the barrel-shaped shell (41), and the filter screen (43) divides the barrel-shaped shell (41) into left and right sides, and the oil outlet pipe (111) and the oil inlet end of the hydraulic oil pump (12) are both connected to the top surface of the cover body (42), and the oil outlet pipe (111) and the oil inlet end of the hydraulic oil pump (12) are symmetrically arranged on the cover body (42).

6. The cooling device for a gear box according to claim 5, characterized in that: Two mounting grooves (411) are provided on the inner peripheral wall of the barrel-shaped shell (41), the mounting grooves (411) are connected to the top surface and the inner bottom wall of the barrel-shaped shell (41), and the two sides of the filter screen (43) are respectively inserted into the two mounting grooves (411).

7. The cooling device for a gear box according to claim 5, characterized in that: A slot (431) is provided on the top surface of the filter (43), and both sides of the slot (431) are connected to the two side surfaces of the filter (43). A sealing strip (44) is provided in the slot (431) for vertical sliding, and both ends of the sealing strip (44) are flush with the two sides of the filter (43). An elastic component (45) is provided in the slot (431) to prevent the sealing strip (44) from moving downward, and the top surface of the sealing strip (44) is used to contact the inner top wall of the cover (42).

8. The cooling device for a gear box according to claim 7, characterized in that: The elastic component (45) includes a vertical spring (451), one end of which is fixed to the bottom wall of the slot (431), and the other end of which is in contact with the bottom surface of the sealing strip (44).

9. The cooling device for a gear box according to claim 7, characterized in that: A retaining groove (432) is provided on the inner wall of the slot (431), and a retaining block (441) is fixedly connected to the side surface of the sealing strip (44), and the retaining block (441) is slidably disposed in the retaining groove (432).

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