CN115234639A

CN115234639A - Cooling device for gearbox

Info

Publication number: CN115234639A
Application number: CN202211010798.9A
Authority: CN
Inventors: 张华�; 王强; 吕仕成; 陈勤
Original assignee: Nanjing Runke Machinery Co ltd
Current assignee: Nanjing Runke Machinery Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-10-25

Abstract

The invention discloses a cooling device for a gear box, which comprises an oil path circulating mechanism, wherein the oil path circulating mechanism comprises a circulating oil pipe and a hydraulic oil pump, the circulating oil pipe comprises an oil outlet pipe communicated with the bottom of a box body and an oil return pipe communicated with the top of the box body, the oil return pipe is connected with the oil inlet end of the hydraulic oil pump, the oil return pipe is connected with the oil outlet end of the hydraulic oil pump, one side of the box body is provided with a refrigerator, the refrigerator comprises a condensation pipe wound on the oil return pipe, the oil outlet pipe is provided with a control mechanism, the control mechanism comprises a fastening clamp sleeved outside the oil outlet pipe, the fastening clamp comprises an annular part with one side in an open shape and lug plate parts respectively fixed at two ends of the annular part, a high-heat expansion part is arranged on the inner side surface of the annular part, the volume of the high-heat expansion part is increased after the high-heat expansion part is heated, the high-heat expansion part is coated on the outer peripheral surface of the oil outlet pipe, and a detection assembly is arranged on the lug plate part and used for controlling the start and stop of the refrigerator. This application has the effect that reduces and carries out refrigerated energy loss to the gear box.

Description

Cooling device for gearbox

Technical Field

The present invention relates to the field of gearbox accessories, and in particular to a cooling device for a gearbox.

Background

With the development of industry, the application of gear boxes is gradually increased, the gear boxes have the main functions of adjusting the rotating speed of a power source, changing the transmission direction, changing the rotating moment, distributing power and the like, and are widely applied to various industries such as machine tools, conveying equipment, stirring equipment, wind power generation and the like.

In the related art, the chinese utility model patent publication No. CN201599367U discloses a change speed gear box, which includes a box body, an input shaft and an output shaft; an input duplicate gear is axially and slidably arranged on the input shaft, an output duplicate gear is axially and slidably arranged on the output shaft, a transition shaft is arranged between the input shaft and the output shaft, and a first duplicate gear and a second duplicate gear are arranged on the transition shaft.

To above-mentioned correlation technique, in order to provide lubrication and cooling effect for the gear in the box, be provided with lubricating oil in the box usually, but along with the high-speed rotation of the gear in the box, the oil temperature of lubricating oil in the box can rise along with the friction between the gear gradually, can cause the influence to the transmission of the inside gear of gear box, accelerate the wearing and tearing of gear, gear box life has been shortened, common refrigeration plant is the refrigerator, condenser pipe on the refrigerator cools off intraductal lubricating oil around locating on the oil pipe, but the refrigerator is continuous work usually, thereby the energy loss to gear box cooling process has been increased.

Disclosure of Invention

In order to reduce the energy loss of cooling the gearbox, the present application provides a cooling arrangement for a gearbox.

The cooling device for the gearbox adopts the following technical scheme:

a cooling device for gear box, including the oil circuit circulation mechanism who communicates on the box, oil circuit circulation mechanism include with the circulating oil pipe that the box is linked together with set up in last hydraulic oil pump of circulating oil pipe, circulating oil pipe including communicate in bottom half go out oil pipe and communicate in the oil pipe that returns at box top, return oil pipe with the oil inlet end of hydraulic oil pump is connected, return oil pipe with the oil end of hydraulic oil pump is connected, one side of box is provided with the refrigerator, the refrigerator is including locating around the condenser pipe on returning oil pipe, be provided with control mechanism on going out oil pipe, control mechanism locates including the cover go out the outside fastening clamp of oil pipe, the fastening clamp includes that one side is the annular portion of opening form and is fixed in respectively the ear plate portion at annular portion both ends, be provided with high heat expansion spare on the medial surface of annular portion, high heat expansion spare is heated back volume increase, high heat expansion spare cladding in go out on oil pipe's the outer peripheral face, be provided with the determine module that is used for detecting two ear plate portion and open and shut on the ear plate portion, determine module is used for controlling opening and shutting of refrigerator stops.

By adopting the technical scheme, when the gear box operates, the hydraulic oil pump can pump out lubricating oil in the box body through the oil outlet pipe, and the lubricating oil is re-injected into the box body through the oil return pipe, along with the operation of the gear box, gears in the gear box rub against each other, so that the temperature of the lubricating oil in the box body gradually rises, the temperature of the pipe wall of the oil outlet pipe can also rise along with the temperature rise, the high-heat expansion piece in the control mechanism is expanded, the annular part is opened, the lug plate parts fixed on the two end parts of the annular part are mutually far away, the detection assembly control refrigerator is started when the temperature of the lubricating oil is too high, the condensation pipe is further used for cooling the lubricating oil returning pipe and the lubricating oil in the oil return pipe, the lubricating oil flowing back into the box body is in a low-temperature state, the effect of cooling the gear box is achieved, after the temperature of the lubricating oil in the gear box is reduced, the temperature of the oil outlet pipe is also gradually reduced, at the moment, the high-heat expansion piece contracts, the two lug plate parts are mutually close to enable the detection assembly control refrigerator to automatically stop operation after the temperature of the lubricating oil cooling machine, and reduce the energy loss of the cooling process of the gear box.

Preferably, a connecting hole is formed in the ear plate portion, the detection assembly comprises a threaded rod penetrating through the two connecting holes in the ear plate portion, a nut is connected to one end of the threaded rod in a threaded manner, the nut abuts against the ear plate portion, a baffle is fixedly connected to the other end of the threaded rod, the baffle is close to a detection tube fixedly connected to the side face of the ear plate portion, a detection rod is arranged in the detection tube in a sliding manner, the end portion, away from the baffle, of the detection rod is hinged to an abutting plate, the abutting plate abuts against the ear plate portion, a thrust assembly blocking the abutting plate to be close to the baffle is arranged between the abutting plate and the baffle, a fixed contact piece is embedded in the inner wall of the detection tube, a movable contact piece capable of abutting against the fixed contact piece is embedded in the outer peripheral face of the detection rod, a power supply is arranged on one side of the refrigerator, the movable contact piece is electrically connected with one electrode of the power supply, the other electrode of the power supply is electrically connected with one binding post of the refrigerator, and the other binding post of the refrigerator is electrically connected with the fixed contact piece.

Through adopting above-mentioned technical scheme, when the pipe wall temperature of oil pipe risees, high fever inflation piece inflation among the control mechanism, prop annular portion open, make two otic placodes keep away from each other, under the conflict effect of nut, the otic placode portion of keeping away from nut one side can promote the butt plate, make the butt plate overcome thrust subassembly's thrust and to the direction removal that is close to the baffle, thereby make the measuring rod slide to the measuring tube, make the movable contact with the fixed contact, and then make the refrigerator start when lubricating oil temperature is too high, and after the lubricating oil temperature in the gear box reduces, high fever inflation piece shrink, under thrust subassembly's thrust effect, the measuring rod slides out to the measuring tube outward, make follow contact and fixed contact break away from, thereby make the refrigerator automatic shutdown after lubricating oil temperature reduces.

Preferably, a limiting groove is formed in the inner wall of the detection tube, a limiting block is fixedly connected to the outer peripheral surface of the detection tube, and the limiting block is arranged in the limiting groove in a sliding mode.

Through adopting above-mentioned technical scheme, the stopper slides and sets up in the spacing inslot to hinder the possibility of test rod roll-off from the interior roll-off of test tube, thereby improved determine module's stability.

Preferably, the thrust subassembly includes thrust spring, thrust spring cover is located the detecting tube with outside the measuring pole, thrust spring's one end contradict in the baffle is close to on the side of otic placode, thrust spring's the other end contradict in the butt joint plate is kept away from on the side of otic placode.

Through adopting above-mentioned technical scheme, outside detecting tube and test rod were located to the thrust spring cover, thrust spring's one end was contradicted on the side that the baffle is close to the otic placode, and thrust spring's the other end is contradicted on the side that the otic placode was kept away from to the butt plate to hinder the butt plate to remove to the direction that is close to the baffle.

Preferably, the high thermal expansion member has a ring 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 portions.

Through adopting above-mentioned technical scheme, the opening of high fever inflation piece is towards between two otic placodes portions, under thrust spring's elastic force effect, and annular portion can hinder the inner peripheral surface of high fever inflation piece and break away from the outer peripheral face of oil pipe for high fever inflation piece can be more stable inconsistent with the outer peripheral face of oil pipe, make detection device can be more accurate detect the temperature of oil pipe.

Preferably, one side of hydraulic oil pump is provided with the filter, go out oil pipe and pass through the filter with the hydraulic oil pump is linked together, the filter include tubbiness casing and with tubbiness casing screw-thread fit's lid, the vertical filter screen that is provided with in the tubbiness casing, the filter screen will the tubbiness casing is separated for the left and right sides, go out oil pipe with the oil feed end of hydraulic oil pump all connect in on the top surface of lid, go out oil pipe with the oil feed end symmetry of hydraulic oil pump set up in on the lid.

Through adopting above-mentioned technical scheme, the filter screen is vertical to be set up in the tubbiness casing, makes the filter screen separate the tubbiness casing for the left and right sides, and the oil feed end symmetry that goes out oil pipe and hydraulic oil pump sets up on the lid, and when lid and tubbiness casing were screwed, the filter screen can filter lubricated fluid to impurity that friction produced between the gear has been reduced and has entered into the gear box once more, has caused the possibility of damage to the tooth surface of the gear.

Preferably, two mounting grooves are formed in the inner peripheral wall of the barrel-shaped shell, the mounting grooves are communicated with the top surface and the inner bottom wall of the barrel-shaped shell, and two sides of the filter screen are respectively inserted into the two mounting grooves.

Through adopting above-mentioned technical scheme, the both sides of filter screen are inserted respectively and are located two mounting grooves in to hinder the filter screen to rotate along the axis direction of tubbiness casing in the tubbiness casing, make the position of filter screen more stable, and then make the filter can be more stable filter lubricating oil.

Preferably, a slot has been seted up on the top surface of filter screen, the both sides of slot communicate in two sides of filter screen, vertical slip is provided with the sealing strip in the slot, the both ends of sealing strip with the both sides of filter screen flush mutually, be provided with in the slot and hinder the elastic component of sealing strip downstream, the top surface of sealing strip be used for with the inboard roof of lid is inconsistent.

Through adopting above-mentioned technical scheme, when lid and tubbiness casing were screwed, the sealing strip tightly supported on the inboard roof of lid under the hindrance effect of elasticity subassembly to make the sealing strip can hinder the fluid circulation each other of filter screen both sides, make the process filter that can be stable with the lubricating oil that goes out oil pipe and be linked together one side, improved filtration efficiency.

Preferably, the elasticity subassembly includes vertical spring, the one end of vertical spring is fixed in on the diapire of slot, the other end of vertical spring contradict in on the bottom surface of sealing strip.

Through adopting above-mentioned technical scheme, on the one end of vertical spring was fixed in the diapire of slot, the other end of vertical spring was contradicted on the bottom surface of sealing strip to hinder the sealing strip and slide downwards.

Preferably, a blocking groove is formed in the inner wall of the slot, a stop block is fixedly connected to the side face of the sealing strip, and the stop block is arranged in the blocking groove in a sliding mode.

Through adopting above-mentioned technical scheme, the dog slide set up in keep off the inslot, hinder the sealing strip to break away from the slot to make the top that is located the filter screen that the sealing strip can be stable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the gear box operates, the hydraulic oil pump can pump out lubricating oil in the box body through the oil outlet pipe and inject the lubricating oil into the box body again through the oil return pipe, gears in the gear box rub with each other along with the operation of the gear box, so that the temperature of the lubricating oil in the box body gradually rises, the temperature of the pipe wall of the oil outlet pipe also rises along with the temperature rise, a high-temperature expansion piece in the control mechanism expands to prop the annular part away from lug plates fixed at two end parts of the annular part, the detection assembly controls the refrigerator to start when the temperature of the lubricating oil is too high, the condensation pipe cools the lubricating oil in the oil return pipe and the pipe, the lubricating oil flowing back into the box body is in a low-temperature state, the effect of cooling the gear box is achieved, after the temperature of the lubricating oil in the gear box is reduced, the temperature of the oil outlet pipe is also gradually reduced, at the moment, the high-temperature expansion piece contracts to enable the two lug plates to approach each other, so that the detection assembly controls the refrigerator to automatically stop the operation after the temperature of the lubricating oil is reduced, and reduce the energy loss in the cooling process of the gear box;

2. when the temperature of the pipe wall of the oil outlet pipe rises, the high-heat expansion piece in the control mechanism expands to open the annular part, so that the two lug plates are far away from each other, under the action of the collision of the nut, the lug plate far away from one side of the nut can push the abutting plate, the abutting plate overcomes the thrust of the thrust assembly and moves towards the direction close to the baffle, the detection rod slides towards the detection pipe, the movable contact piece is contacted with the fixed contact piece, the refrigerator is started when the temperature of lubricating oil is too high, and after the temperature of the lubricating oil in the gear box is reduced, the high-heat expansion piece contracts, under the action of the thrust assembly, the detection rod slides out of the detection pipe, the auxiliary contact piece is separated from the fixed contact piece, and the refrigerator automatically stops running after the temperature of the lubricating oil is reduced;

3. the filter screen is vertical to be set up in the tubbiness casing, makes the filter screen separate the tubbiness casing for the left and right sides, and the oil inlet end symmetry that goes out oil pipe and hydraulic oil pump sets up on the lid, and when lid and tubbiness casing were screwed, the filter screen can filter lubricated fluid to the impurity that the friction produced between the gear has been reduced enters into the gear box once more, causes the possibility of damage to the tooth surface of the gear.

Drawings

Fig. 1 is a schematic view of the overall structure of a cooling device in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a control mechanism in the embodiment of the present application.

Fig. 3 is a sectional view of a high thermal expansion member in the embodiment of the present application.

FIG. 4 is a cross-sectional view of a test tube and test rod in an embodiment of the present application.

Fig. 5 is a cross-sectional view of a filter in an embodiment of the present application.

Fig. 6 is a partially enlarged view of a portion a in fig. 5.

Description of the reference numerals: 1. an oil path circulation mechanism; 11. circulating an oil pipe; 111. an oil outlet pipe; 1111. a baffle ring; 1112. screwing a cover; 112. an oil return pipe; 12. a hydraulic oil pump; 2. a control mechanism; 21. fastening a clamp; 211. an annular portion; 212. a ear plate portion; 2121. connecting holes; 22. a high thermal expansion member; 221. an inner arc plate; 222. an end plate; 223. a side plate; 224. an elastic film; 225. a high thermal expansion material; 23. a detection component; 231. a threaded rod; 232. a nut; 233. a detection tube; 2331. a limiting groove; 2332. a fixed contact piece; 234. a detection lever; 2341. a movable contact spring; 2342. a limiting block; 235. a baffle plate; 236. a butt joint plate; 2361. a communicating hole; 237. a thrust assembly; 2371. a thrust spring; 238. a power source; 3. a refrigerator; 31. a condenser tube; 4. a filter; 41. a barrel-shaped housing; 411. mounting grooves; 42. a cover body; 421. an externally threaded tube; 43. a filter screen; 431. a slot; 432. a baffle groove; 44. a sealing strip; 441. a stopper; 45. an elastic component; 451. a vertical spring; 5. a box body; 100. and a cooling device.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a cooling device for a gearbox. Referring to fig. 1 and 2, the cooling apparatus 100 includes an oil circulation mechanism 1, a control mechanism 2, and a refrigerator 3. The oil circulation mechanism 1 includes a circulation oil pipe 11 and a hydraulic oil pump 12, and the circulation oil pipe 11 includes an oil outlet pipe 111 and an oil return pipe 112. One end of the oil outlet pipe 111 is communicated with the bottom of the box body 5, the filter 4 is arranged on the oil outlet pipe 111, and one end, far away from the box body 5, of the oil outlet pipe 111 is connected with the oil inlet end of the hydraulic oil pump 12 through the filter 4. One end of the oil return pipe 112 is communicated with the top of the box body 5, one end of the oil return pipe 112 far away from the box body 5 is connected with the oil inlet end of the hydraulic oil pump 12, and the oil return pipe 112 is connected with the oil outlet end of the hydraulic oil pump 12.

Referring to fig. 1, the hydraulic oil pump 12 pumps out the lubricating oil in the case 5 through the oil outlet pipe 111, and after the lubricating oil passes through the filter 4, the hydraulic oil pump 12 re-injects the lubricating oil into the case 5 through the oil return pipe 112. The refrigerator 3 is disposed on one side of the box 5, the refrigerator 3 includes a condensation pipe 31, and the condensation pipe 31 is spirally wound on the outer side of the oil return pipe 112 to cool the lubricating oil.

Referring to fig. 2, the control mechanism 2 includes a fastening band 21, a high thermal expansion member 22, and a detection assembly 23. The fastening clamp 21 is sleeved outside the oil outlet pipe 111. The fastening clip 21 includes an annular portion 211 and an ear plate portion 212. The annular portion 211 is sleeved outside the oil outlet pipe 111, the top side of the annular portion 211 is open, two ear plate portions 212 are positioned on the annular portion 211 and are welded and fixed, the two ear plate portions 212 are positioned on the outer peripheral surface of the annular portion 211, the two ear plate portions 212 are respectively positioned at two ends of the annular portion 211, the side surfaces, close to each other, of the ear plate portions 212 are respectively flush with the end surfaces, connected with the annular portion 211, of the ear plate portions 212, and the connecting holes 2121 are formed in the ear plate portions 212. The high thermal expansion member 22 is provided inside the annular portion 211, and the high thermal expansion member 22 is covered on the outer peripheral surface of the oil outlet pipe 111.

Referring to fig. 2 and 3, the high thermal expansion member 22 has a ring structure, and the high thermal expansion member 22 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, two end faces of the inner arc plate 221 are flush with two end faces of the annular portion 211, respectively, and the inner circumferential surface of the inner arc plate 221 is attached to the outer circumferential surface of the oil outlet pipe 111. Curb plate 223 and end plate 222 are located interior arc board 221 and all go up welded fastening and have two, two curb plates 223 are located the both sides of interior arc board 221 outer peripheral face respectively, curb plate 223 is the annular plate form of top position opening form, the inner peripheral surface of curb plate 223 and the outer peripheral face of interior arc board 221 laminate mutually, the outer peripheral face of curb plate 223 and the global laminating of annular portion 211 mutually, two end plates 222 all are located the outer peripheral face of interior arc board 221, two end plates 222 are located the both ends of interior arc board 221 respectively, the side that two end plates 222 are close to each other flushes with two terminal surfaces of interior arc board 221 respectively mutually, welded fastening is respectively on the side that two curb plates 223 are close to mutually in the both sides of end plate 222. The elastic membrane 224 is fixed between the two side plates 223, the elastic membrane 224 is fixed to the inner side surfaces of the side plates 223 and the end plate 222, respectively, 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, and in this embodiment, the high thermal expansion material 225 is mercury.

Referring to fig. 2 and 4, sensing assembly 23 includes threaded rod 231, nut 232, sensing tube 233, sensing rod 234, stop plate 235, abutment plate 236, and thrust assembly 237. The threaded rod 231 passes through the connecting holes 2121 on the two ear plate parts 212, the diameter of the connecting hole 2121 is larger than that of the threaded rod 231, the nut 232 is in threaded connection with the threaded rod 231, the nut 232 is located at the end part of one end of the threaded rod 231, and the side surface of the nut 232 abuts against the side surface of one ear plate part 212 far away from the other ear plate part 212. The baffle 235 is welded to the end of the threaded rod 231 remote from the nut 232.

Referring to fig. 2 and 4, two detection tubes 233 are welded and fixed on the side surface of the baffle 235 close to the ear plate portion 212, the two detection tubes 233 are symmetrically distributed on two sides of the threaded rod 231 along the horizontal direction, two detection rods 234 are provided, the two detection rods 234 are respectively arranged in the two detection tubes 233 in a sliding manner, the end portions of the two detection rods 234 far away from the baffle 235 are hinged to the side surface of the abutting plate 236 close to the baffle 235, and the abutting plate 236 abuts against the ear plate portion 212 close to one side of the baffle 235. The side surface of the abutting plate 236 is provided with a communication hole 2361, the threaded rod 231 penetrates through the communication hole 2361, and the diameter of the communication hole 2361 is larger than that of the threaded rod 231.

Referring to fig. 2 and 4, a limiting groove 2331 is formed in an inner wall of the detection tube 233, a longitudinal direction of the limiting groove 2331 is parallel to a longitudinal direction of the detection tube 233, a limiting block 2342 is fixedly connected to an outer circumferential surface of the detection tube 233, and the limiting block 2342 is slidably disposed in the limiting groove 2331.

Referring to fig. 1 and 4, a fixed contact 2332 is embedded in the inner wall of the detection tube 233 near one side of the case 5, a movable contact 2341 is embedded in the outer circumferential surface of the detection rod 234 near one side of the case 5, a power supply 238 is provided at one side of the refrigerator 3, the movable contact 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 2332.

Referring to fig. 2 and 4, the thrust assembly 237 includes a thrust spring 2371, the thrust spring 2371 is sleeved outside 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 abutment plate 236 away from the ear plate portion 212. The abutting plate 236 abuts on the ear plate portion 212 by the elastic force of the urging spring 2371, and the movable contact piece 2341 is disengaged from the fixed contact piece 2332. When the temperature of the lubricant rises, the temperature of the wall of the oil outlet pipe 111 rises, the high thermal expansion member 22 expands, and the ear plate portion 212 on the side away from the nut 232 pushes the abutting plate 236, so that the abutting plate 236 overcomes the pushing force of the pushing assembly 237 and moves toward the baffle 235, thereby sliding the detection rod 234 into the detection pipe 233, and making the movable contact 2341 contact with the fixed contact 2332.

Referring to fig. 1 and 5, the filter 4 is provided on a side close to the hydraulic oil pump 12, and the filter 4 includes a barrel-shaped case 41, a cover 42, and a filter net 43. The inner peripheral surface of the lid 42 is screwed to the top of the barrel case 41, and when the lid 42 is screwed to the barrel case 41, the top surface of the barrel case 41 abuts against the inner top wall of the lid 42. Two mounting grooves 411 have been seted up on the internal perisporium of tubbiness casing 41, and mounting groove 411 communicates in the top surface and the interior diapire of tubbiness casing 41, and two mounting grooves 411 symmetry set up on tubbiness casing 41, and filter screen 43 is vertical to be set up in tubbiness casing 41, and filter screen 43 separates tubbiness casing 41 for the left and right sides, and two sides of filter screen 43 are inconsistent with two inside walls that two mounting grooves 411 were kept away from each other respectively.

Referring to fig. 1 and 5, the oil inlet ends of the oil outlet pipe 111 and the hydraulic oil pump 12 are both connected to the top surface of the cover 42, an external threaded pipe 421 is welded and fixed to the cover 42, the two external threaded pipes 421 are symmetrically arranged on the cover 42, the external threaded pipe 421 is communicated with the inner side of the cover 42, a baffle ring 1111 is fixedly connected to the outer peripheral surface of the oil inlet end of the hydraulic oil pump 12 and the outer peripheral surface of the oil outlet pipe 111 at the end far away from the box 5, both the outer peripheral surface of the oil inlet end of the hydraulic oil pump 12 and the oil outlet pipe 111 are sleeved with screw caps 1112, and the inner peripheral surfaces of the two screw caps 1112 are in threaded connection with the two external threaded pipes 421 respectively. When the screw cap 1112 is screwed with the external threaded pipe 421, the top surface of the retaining ring 1111 abuts against the inner top wall of the screw cap 1112, the bottom surface of the retaining ring 1111 abuts against the top end surface of the external threaded pipe 421, and the pipe body at the oil inlet end of the hydraulic oil pump 12 and the oil outlet pipe 111 both penetrate through the cap body 42 and extend into the cup-shaped housing and are located on both sides of the filter screen 43.

Referring to fig. 5 and 6, a slot 431 is formed in the top surface of the filter screen 43, two sides of the slot 431 are communicated with two side surfaces of the filter screen 43, a sealing strip 44 is vertically slidably arranged in the slot 431, two ends of the sealing strip 44 are flush with two sides of the filter screen 43, an elastic component 45 blocking the sealing strip 44 to move downwards is arranged in the slot 431, and the top surface of the sealing strip 44 is used for being abutted to the inner top wall of the cover body 42. The elastic assembly 45 comprises five vertical springs 451, the vertical springs 451 are uniformly distributed in the slot 431 along the length direction of the sealing strip 44, one end of each vertical spring 451 is fixed on the bottom wall of the slot 431, and the other end of each vertical spring 451 abuts against the bottom surface of the sealing strip 44. A blocking groove 432 is formed in the inner wall of the slot 431, a stopper 441 is fixedly connected to the side surface of the sealing strip 44, and the stopper 441 is vertically and slidably arranged in the blocking groove 432.

The implementation principle of the cooling device for the gearbox in the embodiment of the application is as follows: when the temperature of the pipe wall of the oil outlet pipe 111 rises, the high thermal expansion material 225 filled in the high thermal expansion member 22 expands, the annular portion 211 is expanded, so that the two ear plate portions 212 are far away from each other, under the interference action of the nut 232, the ear plate portion 212 far away from one side of the nut 232 can push the abutting plate 236, the abutting plate 236 overcomes the thrust of the thrust spring 2371 and moves towards the direction close to the baffle 235, so that the detection rod 234 slides towards the detection pipe 233, the movable contact plate 2341 is in contact with the fixed contact plate 2332, further, the refrigerator 3 is automatically started when the temperature of lubricating oil is too high, so that the condensation pipe 31 cools the lubricating oil in the oil return pipe 112 and the pipe, and the energy loss of the gear box in the cooling process is reduced.

When the temperature of the lubricant in the gear box is reduced, the high thermal expansion member 22 contracts, and under the thrust of the thrust assembly 237, the detection rod 234 slides out of the detection tube 233, so that the slave contact is disengaged from the fixed contact 2332, and the refrigerator 3 automatically stops operating after the temperature of the lubricant is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A cooling device for a gearbox, characterized by: including communicating oil circuit circulation mechanism (1) on box (5), oil circuit circulation mechanism (1) include with circulating oil pipe (11) that box (5) are linked together with set up in hydraulic oil pump (12) on circulating oil pipe (11), circulating oil pipe (11) including communicate in go out oil pipe (111) of box (5) bottom and communicate in go back oil pipe (112) at box (5) top, go back oil pipe (112) with the oil feed end of hydraulic oil pump (12) is connected, go back oil pipe (112) with the play oil end of hydraulic oil pump (12) is connected, one side of box (5) is provided with refrigerator (3), refrigerator (3) are including around locating condenser pipe (31) on returning oil pipe (112), be provided with control mechanism (2) on going out oil pipe (111), control mechanism (2) including the cover locate go out the outer fastening clamp (21) of oil pipe (111), fastening clamp (21) include that one side is open-form annular portion (211) and be fixed in respectively the ear portion (211) of annular portion (211), the expansion cladding piece (22) of high fever after being heated, be provided with the annular portion (22) on the high fever expansion cladding piece (211), the detecting assembly (23) for detecting the opening and closing of the two ear plate parts (212) is arranged on the ear plate parts (212), and the detecting assembly (23) is used for controlling the starting and stopping of the refrigerator (3).

2. A cooling arrangement for a gearbox according to claim 1, characterised in that: the detection device is characterized in that a connecting hole (2121) is formed in the ear plate part (212), the detection assembly (23) comprises a threaded rod (231) penetrating through the connecting holes (2121) in the two ear plate parts (212), a nut (232) is in threaded connection with one end of the threaded rod (231), the nut (232) abuts against the ear plate part (212), a baffle (235) is fixedly connected with the other end of the threaded rod (231), a detection tube (233) is fixedly connected onto the side surface of the baffle (235) close to the ear plate part (212), a detection rod (234) is arranged in the detection tube (233) in a sliding manner, an abutting plate (236) is hinged to the end part, far away from the baffle (235), of the detection rod (234), the abutting plate (236) abuts against the ear plate part (212), a thrust assembly (237) for obstructing the abutting plate (236) from approaching the baffle (235) is arranged between the abutting plate (236) and the baffle (235), a fixed contact piece (2332) is embedded in the inner wall of the detection tube (233), a contact piece (234) is arranged on the outer peripheral surface of the fixed contact piece, one side of the movable contact piece (2342) is electrically connected with the electrode (2341), and one side of the refrigerator (2341) is provided with one side of the movable contact piece (2343), the other electrode of the power supply (238) is electrically connected with one of the terminals of the refrigerator (3), and the other terminal of the refrigerator (3) is electrically connected with the fixed contact piece (2332).

3. A cooling arrangement for a gearbox according to claim 2, characterised in that: the inner wall of the detection pipe (233) is provided with a limiting groove (2331), the outer peripheral surface of the detection pipe (233) is fixedly connected with a limiting block (2342), and the limiting block (2342) is arranged in the limiting groove (2331) in a sliding mode.

4. A cooling arrangement for a gearbox according to claim 2, characterised in that: thrust subassembly (237) include thrust spring (2371), thrust spring (2371) cover is located detect pipe (233) with outside detection pole (234), the one end of thrust spring (2371) contradict in baffle (235) are close to on the side of otic placode (212), the other end of thrust spring (2371) contradict in butt joint board (236) are kept away from on the side of otic placode (212).

5. A cooling arrangement for a gearbox according to claim 4, characterised in that: the high-heat expansion piece (22) is of an annular structure, one side of the high-heat expansion piece (22) is in an opening shape, and the opening of the high-heat expansion piece (22) faces to the space between the two ear plate parts (212).

6. A cooling arrangement for a gearbox according to claim 1, characterised in that: one side of hydraulic oil pump (12) is provided with filter (4), go out oil pipe (111) and pass through filter (4) with hydraulic oil pump (12) are linked together, filter (4) including tubbiness casing (41) and with tubbiness casing (41) screw-thread fit's lid (42), vertically in tubbiness casing (41) be provided with filter screen (43), filter screen (43) will tubbiness casing (41) are separated for the left and right sides, go out oil pipe (111) with the oil feed end of hydraulic oil pump (12) all connect in on the top surface of lid (42), go out oil pipe (111) with the oil feed end symmetry of hydraulic oil pump (12) set up in on lid (42).

7. A cooling arrangement for a gearbox according to claim 6, characterised in that: two mounting grooves (411) have been seted up on the internal perisporium of tubbiness casing (41), mounting groove (411) communicate in the top surface and the interior diapire of tubbiness casing (41), the both sides of filter screen (43) are inserted respectively and are located two in mounting groove (411).

8. A cooling arrangement for a gearbox according to claim 6, characterised in that: slot (431) have been seted up on the top surface of filter screen (43), the both sides of slot (431) communicate in two sides of filter screen (43), vertical slip is provided with sealing strip (44) in slot (431), the both ends of sealing strip (44) with the both sides of filter screen (43) flush mutually, be provided with the hindrance in slot (431) sealing strip (44) downwardly moving's elasticity subassembly (45), the top surface of sealing strip (44) be used for with the inboard roof of lid (42) is inconsistent.

9. A cooling arrangement for a gearbox according to claim 8, characterised in that: the elastic assembly (45) comprises a vertical spring (451), one end of the vertical spring (451) is fixed on the bottom wall of the slot (431), and the other end of the vertical spring (451) abuts against the bottom surface of the sealing strip (44).

10. A cooling arrangement for a gearbox according to claim 8, characterised in that: a blocking groove (432) is formed in the inner wall of the inserting groove (431), a stop block (441) is fixedly connected to the side face of the sealing strip (44), and the stop block (441) is arranged in the blocking groove (432) in a sliding mode.