CN116022516A - Automatic tensioning device for chain of underground coal mine scraper - Google Patents
Automatic tensioning device for chain of underground coal mine scraper Download PDFInfo
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- CN116022516A CN116022516A CN202310322553.8A CN202310322553A CN116022516A CN 116022516 A CN116022516 A CN 116022516A CN 202310322553 A CN202310322553 A CN 202310322553A CN 116022516 A CN116022516 A CN 116022516A
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Abstract
The application relates to an automatic tensioning device for a scraper chain in a coal mine, which relates to the field of coal mine conveying devices for the coal mine, and comprises a tensioning mechanism and an auxiliary lubricating mechanism for lubricating the scraper chain; the tensioning mechanism comprises two symmetrically arranged mounting substrates, the two mounting substrates are fixedly connected with the scraper main body, feedback assemblies are arranged on the two mounting substrates, one ends of the feedback assemblies are connected with the transmission assemblies, and the transmission assemblies are connected with scraper chains; the feedback component is used for feeding back the chain state of the transmission scraper machine; the other end of the feedback component is connected with a fixing component, and the fixing component is used for supporting and fixing the transmission component. The utility model has the advantages of guarantee scrape trigger chain and be in tensioning state all the time, avoid scrape trigger chain and send and move and influence transmission efficiency, improve scrape trigger chain life's effect.
Description
Technical Field
The application relates to the field of coal mine conveying devices for underground coal mines, in particular to an automatic tensioning device for a chain of an underground coal mine scraper.
Background
The scraper is widely used for daily exploitation and conveying work under the coal mine, the scraper for the coal mine adopts a steel groove and an open type, so that coal mined by the coal mining machine is convenient to fall onto the scraper conveyor, and a middle double-chain structure is adopted in the steel groove to drag the wear-resistant steel plate; the production process of the product has high requirements and high system stability.
The existing underground coal mine scraper mainly comprises a scraper main body, a scraper motor, a scraper chain and a transmission gear; when the scraper is conveyed, the scraper chain is required to bear the weight of a coal mine to be conveyed, the chain is loosened after long-term use, the scraper chain cannot be normally used, and the conveying efficiency of the scraper chain is affected.
Aiming at the related technology, the inventor considers that the long-term use of the scraper chain of the scraper for underground coal mines at the present stage can lead to loosening of the chain, influence the transmission efficiency of the scraper chain and reduce the service life of the scraper chain.
Disclosure of Invention
In order to ensure that the scraper chain is always in a tensioning state, the scraper chain is prevented from loosening to influence the transmission efficiency, the service life of the scraper chain is prolonged, and the application provides an automatic tensioning device for the scraper chain in a coal mine.
The application provides an automatic overspeed device tensioner of colliery in pit scraper chain adopts following technical scheme:
an automatic tensioning device for a scraper chain of a coal mine underground comprises a tensioning mechanism and an auxiliary lubrication mechanism for lubricating the scraper chain;
the tensioning mechanism comprises two symmetrically arranged mounting substrates, the two mounting substrates are fixedly connected with the scraper main body, feedback assemblies are arranged on the two mounting substrates, one ends of the feedback assemblies are connected with the transmission assemblies, and the transmission assemblies are connected with scraper chains;
the feedback component is used for feeding back the chain state of the transmission scraper machine;
the other end of the feedback component is connected with a fixing component, and the fixing component is used for supporting and fixing the transmission component.
Through adopting above-mentioned technical scheme, scrape trigger chain and appear not hard up when moving, scrape trigger chain not hard up state and feed back for feedback assembly through drive assembly, feedback assembly atress and then drive fixed subassembly work, fixed subassembly atress and then play the supporting role to feedback assembly and drive assembly for scrape trigger chain and be in tensioning state all the time, avoid scraping trigger chain not hard up and influence transmission efficiency, improve and scrape trigger chain life.
Optionally, each of the two feedback assemblies includes a plurality of first telescopic rods, a first spring, a first communication pipe, a second telescopic rod and a second spring;
the number of the first telescopic rods is not less than one, the number of the first telescopic rods is not more than three, a first spring is arranged in each first telescopic rod, one end of the first spring is fixedly connected with the output end of the first telescopic rod, the other end of the first spring is fixedly connected with one end, far away from the output end, of the fixed end of the first telescopic rod, and one end, far away from the fixed end, of the output end of the first telescopic rod is connected with a transmission assembly;
each first telescopic link stiff end is kept away from and is all linked together first connecting pipe on the one end of output, each first connecting pipe keep away from the one end of first telescopic link all with the one end intercommunication that the output was kept away from to the second telescopic link stiff end, second spring one end with second telescopic link output fixed connection, the second spring other end with the one end fixed connection that the output was kept away from to the second telescopic link stiff end, the one end that the stiff end was kept away from to the second telescopic link output is connected with fixed subassembly.
Through adopting above-mentioned technical scheme, when scraping the trigger chain and taking place not hard up, the effort between trigger chain and each transmission straight-tooth wheel reduces, first telescopic link output removes to the one end of keeping away from first telescopic link stiff end under first spring effect, and then make several transmission straight-tooth wheel remove to the direction of keeping away from each other and with scrape trigger chain tensioning, in the stiff end of first telescopic link output is removed the hydraulic fluid suction first telescopic link of second telescopic link stiff end in through first connecting pipe, and then make second telescopic link output remove to the one end of keeping away from fixed subassembly, and then drive fixed subassembly work, scrape trigger chain tensioning state and receive the feedback in real time, and in time transmit feedback state for fixed subassembly, guarantee to scrape trigger chain and can in time be by tensioning.
Optionally, the transmission assembly includes a plurality of transmission spur gears and a plurality of mounting plates;
the number of the mounting plates is the same as that of the first telescopic rods, and the mounting plates are respectively and fixedly arranged at one end of the output ends of the first telescopic rods, which is far away from the fixed end;
and each mounting plate is rotatably provided with a transmission spur gear, and each transmission spur gear is meshed and connected with a scraper chain.
Through adopting above-mentioned technical scheme, scrape trigger motor work and then drive transmission spur gear and rotate, drive spur gear and rotate and then drive and scrape trigger chain motion, drive and scrape trigger main part work through the transmission between trigger chain and the transmission spur gear and then, realize scraping trigger transportation function, simultaneously through transmitting the tensioning state who scrapes trigger chain to feedback assembly, realize the mechanical linkage who scrapes the automatic overspeed device tensioner of trigger chain in pit in colliery.
Optionally, the fixing component comprises a first push plate, a hydraulic fluid storage cavity, a second communicating pipe, a third telescopic rod, a third spring, a third communicating pipe, a valve plug, a fourth telescopic rod, a fourth spring, a fixing plate and a sliding plate;
the first push plate is fixedly connected with the output end of the second telescopic rod, one end, away from the second telescopic rod, of the first push plate is abutted to the hydraulic fluid storage cavity, the hydraulic fluid storage cavity is fixedly arranged on the sliding plate, and the sliding plate is slidably arranged on the mounting substrate;
the hydraulic fluid storage cavity is communicated with a second communicating pipe, one end of the second communicating pipe, which is far away from the hydraulic fluid storage cavity, is communicated with one end of the third telescopic rod fixed end, which is far away from the output end, a third spring is installed in the third telescopic rod, one end of the third spring is fixedly connected with the output end of the third telescopic rod, the other end of the third spring is fixedly connected with one end of the third telescopic rod fixed end, which is far away from the output end, a valve plug is fixedly connected with one end of the third telescopic rod output end, which is far away from the fixed end, the valve plug is embedded in the third communicating pipe and is slidably installed in the third communicating pipe, and two ends of the third communicating pipe are respectively communicated with two ends of the fourth telescopic rod fixed end;
the output end of the fourth telescopic rod is fixedly connected with the sliding plate, the fixed end of the fourth telescopic rod is fixedly connected with the fixed plate, and the fixed plate is fixedly arranged on the mounting substrate;
the novel telescopic device is characterized in that a fourth spring is arranged in the fourth telescopic rod, one end of the fourth spring is fixedly connected with the output end of the fourth telescopic rod, and the other end of the fourth spring is fixedly connected with one end, far away from the output end, of the fixed end of the fourth telescopic rod.
Optionally, one end of the fixed end of the fourth telescopic rod is communicated with one end of a fourth communicating pipe, and the other end of the fourth communicating pipe is communicated with the other end of the fixed end of the fourth telescopic rod;
the fourth communicating pipe is provided with a first one-way valve.
Optionally, a plurality of fifth telescopic rods are arranged between the fixed plate and the sliding plate, the number of the fifth telescopic rods is not less than two, one end of each fifth telescopic rod is fixedly connected with the fixed plate, and the other end of each fifth telescopic rod is fixedly connected with the sliding plate;
and each fifth telescopic rod is sleeved with a fifth spring, and two ends of each fifth spring are fixedly connected with the fixed plate and the sliding plate respectively.
Through adopting above-mentioned technical scheme, through the work of each spare part of the inside fixed subassembly of feedback subassembly drive, and then make each subassembly reach the balance again in the fixed subassembly and stabilize, guarantee straining device stable in structure, and then make the scraper chain be in the tensioning state all the time.
Optionally, the auxiliary lubrication mechanism comprises a limiting shell, a lubricating oil storage cavity, an oil spraying port, a second push plate and a sixth spring;
the utility model discloses a scraper machine, including spacing casing, lubricating oil storage cavity, limiting casing fixed mounting is in the scraper machine main part, fixed mounting has the one end in lubricating oil storage cavity on the limiting casing, the lubricating oil has offered the oil spout of several evenly distributed on the lubricating oil storage cavity, each the oil spout all with lubricating oil storage cavity intercommunication, fixed mounting has the second push pedal on the lubricating oil storage cavity other end, second push pedal slidable mounting is in on the limiting casing, the second push pedal is kept away from fixed mounting has the sixth spring of several evenly distributed on the one end in lubricating oil storage cavity, each the sixth spring other end fixed mounting is in on the limiting casing.
Optionally, the second push plate is rotatably provided with a rotating shaft, the rotating shaft is coaxially and fixedly provided with a driven spur gear, and the driven spur gear is in meshed connection with the scraper chain.
Through adopting above-mentioned technical scheme, when scraping the trigger chain loose, scrape trigger chain middle section sagging and then play the thrust of keeping away from the trigger chain direction to driven spur gear, driven spur gear atress and then drive the pivot and move to keeping away from the trigger chain direction of scraping, sixth spring length extension, simultaneously the pivot moves down and then drive the second push pedal and move to keeping away from the direction of scraping the trigger chain, the second push pedal removes and then compresses lubricating oil storage chamber, lubricating oil storage chamber pressurized and then passes through the oil spout blowout and spouts to driven spur gear with lubricating oil storage intracavity storage lubricating oil, driven spur gear is on scraping trigger chain is paintd to scraping trigger chain when scraping trigger chain drive pivoted down, realize the lubrication to scraping trigger chain, improve the transmission efficiency who scrapes trigger chain.
Optionally, an air inlet is formed in the lubricating oil storage cavity, and the air inlet is communicated with the lubricating oil storage cavity;
and a second one-way valve is arranged on the air inlet.
Through adopting above-mentioned technical scheme, set up the air inlet and guarantee that air can get into the lubricating oil and store the intracavity, guarantee that lubricating oil stores the chamber and is restored to original state after being extruded, make things convenient for extrusion oil spout next time.
Optionally, in the plurality of transmission spur gears, at least one transmission spur gear is coaxial with and fixedly connected with the output shaft of the scraper motor;
in the plurality of the transmission spur gears, at least one transmission spur gear is coaxial with and fixedly connected with the input shaft of the scraper main body.
Through adopting above-mentioned technical scheme, scrape trigger motor work and then drive transmission spur gear and rotate, drive spur gear and rotate and then drive and scrape trigger chain motion, drive and scrape trigger main part work through the transmission between trigger chain and the transmission spur gear and then drive, realize scraping trigger transportation function.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the scraper chain is loosened during operation, the loosening state of the scraper chain is fed back to the feedback assembly through the transmission assembly, the feedback assembly is stressed to drive the fixing assembly to work, the fixing assembly is stressed to support the feedback assembly and the transmission assembly, the scraper chain is always in a tensioning state, the transmission efficiency is prevented from being influenced due to loosening of the scraper chain, and the service life of the scraper chain is prolonged;
2. the feedback assembly drives each part inside the fixed assembly to work, so that each assembly inside the fixed assembly is balanced and stable again, the structure stability of the tensioning mechanism is ensured, and the scraper chain is always in a tensioning state;
3. the scraper motor works to drive the transmission spur gear to rotate, the transmission spur gear rotates to drive the scraper chain to move, and the scraper main body is driven to work through transmission between the scraper chain and the transmission spur gear, so that the scraper conveying function is realized.
Drawings
FIG. 1 is a schematic installation view of an embodiment of the present application;
FIG. 2 is a schematic structural view of an embodiment of the present application;
FIG. 3 is a partial cross-sectional view of an embodiment of the present application;
FIG. 4 is an enlarged view at A of FIG. 3 according to an embodiment of the present application;
FIG. 5 is an enlarged view of FIG. 3 at B in an embodiment of the present application;
fig. 6 is a partial cross-sectional view of an auxiliary lubrication mechanism of an embodiment of the present application.
Reference numerals illustrate: 1. a scraper main body; 2. a scraper motor; 3. a scraper chain; 4. a tensioning mechanism; 41. a mounting substrate; 42. a transmission assembly; 421. a transmission spur gear; 422. a mounting plate; 43. a feedback assembly; 431. a first telescopic rod; 4311. a first spring; 432. a first communication pipe; 433. a second telescopic rod; 4331. a second spring; 44. a fixing assembly; 4401. a first push plate; 4402. a hydraulic fluid storage chamber; 4403. a second communicating pipe; 4404. a third telescopic rod; 44041. a third spring; 4405. a valve plug; 4406. a third communicating pipe; 4407. a fourth communicating pipe; 44071. a first one-way valve; 4408. a fourth telescopic rod; 44081. a fourth spring; 4409. a fixing plate; 4410. a sliding plate; 4411. a fifth telescopic rod; 44111. a fifth spring; 5. an auxiliary lubrication mechanism; 51. a limit housing; 52. a lubricant oil storage chamber; 53. an oil spraying port; 54. a second push plate; 55. a rotating shaft; 56. a driven spur gear; 57. a sixth spring; 58. an air inlet; 59. and a second one-way valve.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-6.
The embodiment of the application discloses an automatic tensioning device for a chain of a scraper in a coal mine.
Referring to fig. 1 and 2, the automatic tensioning device for the underground coal mine scraper chain comprises a tensioning mechanism 4, the tensioning mechanism 4 comprises two mounting substrates 41, the two mounting substrates 41 are symmetrically and fixedly mounted on a scraper main body 1, feedback assemblies 43 are mounted on the two mounting substrates 41, one ends of the feedback assemblies 43 are connected with fixing assemblies 44, the fixing assemblies 44 are mounted on the mounting substrates 41, the other ends of the feedback assemblies 43 are connected with a transmission assembly 42, the transmission assembly 42 is connected with a scraper chain 3, an auxiliary lubrication mechanism 5 is further connected to the scraper chain 3, and the auxiliary lubrication mechanism 5 is mounted on the scraper main body 1.
The scraper motor 2 works to drive the transmission assembly 42 to work, the transmission assembly 42 works to drive the scraper chain 3 to work, the scraper chain 3 further drives the scraper main body 1 to work, when the scraper chain 3 works for a long time and loosens, an automatic tensioning device of the scraper chain in the coal mine starts to work, looseness occurs when the scraper chain 3 runs, the looseness state of the scraper chain 3 is fed back to the feedback assembly 43 through the transmission assembly 42, the feedback assembly 43 is stressed to drive the fixing assembly 44 to work, the fixing assembly 44 is stressed to further support the feedback assembly 43 and the transmission assembly 42, the scraper chain 3 is always in a tensioning state, the transmission efficiency is prevented from being influenced due to the looseness of the scraper chain 3, and the service life of the scraper chain 3 is prolonged.
Referring to fig. 3 and fig. 4, two feedback assemblies 43 installed on two mounting substrates 41 respectively include several first telescopic rods 431, the number of first telescopic rods 431 is not less than one and is not more than three, each first telescopic rod 431 stiff end is all even and fixed mounting on mounting substrate 41, transmission assembly 42 is all installed on each first telescopic rod 431 output end one end of keeping away from the stiff end, all be provided with first spring 4311 in each first telescopic rod 431, first spring 4311 one end and first telescopic rod 431 output end fixed connection, the one end fixed connection of output end is kept away from to first spring 4311 other end and first telescopic rod 431 stiff end, each first spring 4311 all is in compression state all the time, each first telescopic rod 431 stiff end is kept away from on the first end of output end all the intercommunication have first connecting pipe 432, each first connecting pipe 432 is kept away from first telescopic rod 431 one end and second telescopic rod 433 stiff end and is kept away from the one end intercommunication of output end, second telescopic rod 433 fixed mounting substrate 41, second telescopic rod fixed mounting is provided with first spring 4311, second telescopic rod 433 output end is kept away from stiff end 44 and second telescopic rod 433 fixed connection, second spring 4331 is kept away from the second telescopic rod 433 fixed connection, second telescopic rod 433 is in compression state all the second telescopic rod 433, and output end is in compression state, second telescopic rod 4331 is kept away from second telescopic rod 433 fixed end 31. The first telescopic rod 431, the second telescopic rod 433 and the first communication pipe 432 are all filled with hydraulic fluid.
Referring to fig. 1 and 2, the two transmission assemblies 42 respectively connected with the two feedback assemblies 43 each include a plurality of mounting plates 422, the number of the plurality of mounting plates 422 is the same as that of the first telescopic rods 431, each mounting plate 422 is fixedly mounted on an output end of each first telescopic rod 431, each mounting plate 422 is rotatably mounted with a transmission spur gear 421, and each transmission spur gear 421 is engaged with and connected with the scraper chain 3. At least one transmission spur gear 421 of the plurality of transmission spur gears 421 is coaxial with and fixedly connected with the output shaft of the scraper motor 2; among the plurality of transmission spur gears 421, at least one transmission spur gear 421 is coaxially and fixedly connected with the input shaft of the scraper main body 1.
The scraper motor 2 works to drive the transmission spur gears 421 to rotate, the transmission spur gears 421 rotate to drive the scraper chains 3 to move, the scraper main body 1 is driven to work through transmission between the scraper chains 3 and the transmission spur gears 421, the scraper conveying function is achieved, the scraper chains 3 are loosened along with the increase of the scraper running time, when the scraper chains 3 are loosened, acting force between the scraper chains 3 and the transmission spur gears 421 is reduced, under the action of the first springs 4311, the output ends of the first telescopic rods 431 move towards one ends far away from the fixed ends of the first telescopic rods 431, the transmission spur gears 421 move towards the directions far away from each other and tension the scraper chains 3, hydraulic fluid in the fixed ends of the second telescopic rods 433 is pumped into the fixed ends of the first telescopic rods 431 through the first connecting pipes 432 when the output ends of the first telescopic rods 431 move, the output ends of the second telescopic rods 433 move towards one ends far away from the fixed ends of the fixed assemblies 44, and the fixed assemblies 44 are driven to work.
Referring to fig. 3 and 5, the two fixing assemblies 44 respectively connected with the two feedback assemblies 43 each include a first push plate 4401, the first push plate 4401 is fixedly connected with the output end of the second telescopic rod 433, one end of the first push plate 4401, which is far away from the second telescopic rod 433, is abutted with the hydraulic fluid storage cavity 4402, the first push plate 4401 always applies a force, which is far away from the second telescopic rod 433, to the hydraulic fluid storage cavity 4402 under the action of the second telescopic rod 433, the hydraulic fluid storage cavity 4402 is filled with hydraulic fluid, the hydraulic fluid storage cavity 4402 is arranged on a sliding plate 4410, the sliding plate 4410 is slidably mounted on a mounting substrate 41, the hydraulic fluid storage cavity 4402 is communicated with a second communicating pipe 4403, one end, which is far away from the hydraulic fluid storage cavity 4402, is communicated with one end, which is far away from the output end, of the third telescopic rod 4404, of the third communicating pipe 4403 is provided with a third spring 44041, one end of the third telescopic rod 4404 is fixedly connected with the output end of the third telescopic rod 4404, the other end of the third spring 44041 is fixedly connected with one end of the fixed end of the third telescopic rod 4404 far away from the output end, the third spring 44041 is always in a stretching state, a valve plug 4405 is fixedly arranged on one end of the output end of the third telescopic rod 4404 far away from the fixed end, the valve plug 4405 is embedded and slidably arranged in the third communicating pipe 4406, the valve plug 4405 is arranged at the middle section of the third communicating pipe 4406, when one end of the valve plug 4405 far away from the third telescopic rod 4404 is tightly abutted with the inner wall of the third communicating pipe 4406, the valve plug 4405 blocks two ends of the third communicating pipe 4406, two ends of the third communicating pipe 4406 are respectively communicated with two ends of the fixed end of the fourth telescopic rod 4408, a fourth spring 44081 is arranged in the fourth telescopic rod 4408, one end of the fourth spring 44081 is fixedly connected with the output end of the fourth telescopic rod 4408, the other end of the fourth spring 44081 is fixedly connected with one end of the fixed end of the fourth telescopic rod 4408 far away from the output end, the fourth spring 44081 is always in a contracted state. The two ends of the fixed end of the fourth telescopic rod 4408 are respectively communicated with the two ends of the fourth communicating pipe 4407, the fourth communicating pipe 4407 is provided with a first one-way valve 4407, and under the action of the first one-way valve 4407, the liquid flowing direction in the fourth communicating pipe 4407 always flows from one end of the fixed end of the fourth telescopic rod far away from the output end to one end of the fixed end of the fourth telescopic pipe close to the output end. The output end of the fourth telescopic rod 4408 is fixedly connected with the sliding plate 4410, the fixed end of the fourth telescopic rod 4408 is fixedly connected with the fixed plate 4409, the fixed plate 4409 is fixedly installed on the installation base plate 41, two symmetrically arranged fifth telescopic rods 4411 are installed on the fixed plate 4409, the fixed ends of the two fifth telescopic rods 4411 are fixedly connected with the fixed plate 4409, the output ends of the two fifth telescopic rods 4411 are fixedly connected with the sliding plate 4410, the two fifth telescopic rods 4411 are sleeved with fifth springs 44111, one end of each fifth spring 44111 is fixedly connected with the sliding plate 4410, and the other end of each fifth spring 44111 is fixedly connected with the fixed plate 4409. The second communicating tube 4403, the third telescopic rod 4404, the third communicating tube 4406, the fourth communicating tube 4407 and the fourth telescopic rod 4408 are all filled with hydraulic fluid.
When the scraper chain 3 is loosened, the feedback assembly 43 is stressed to drive the first push plate 4401 to move in a direction away from the sliding plate 4410, the first push plate 4401 moves to reduce the thrust of the first push plate 4401 to the hydraulic fluid storage cavity 4402, so that part of the hydraulic fluid in the fixed ends of the second communicating pipe 4403 and the third telescopic rod 4404 flows back into the hydraulic fluid storage cavity 4402, the hydraulic fluid in the fixed end of the third telescopic rod 4404 is reduced, simultaneously under the action of the third spring 44041, the output end of the third telescopic rod 4404 drives the valve plug 4405 to move in a direction away from the third communicating pipe 4406, the two ends of the third communicating pipe 4406 are communicated, and under the action of the fourth spring 44081, the output end of the fourth telescopic rod 4408 moves in a direction close to the sliding plate 4410, the hydraulic fluid in one end of the fixed end of the fourth telescopic rod 4408 enters one end of the fourth telescopic rod 4408, which is far away from the output end, through the third communicating pipe 4406, the output end of the fourth telescopic rod 4408 moves to drive the sliding plate 4410 to move towards the direction away from the fixed end, the sliding plate 4410 moves to push the hydraulic fluid storage cavity 4402 to move towards the direction close to the first push plate 4401 and extrude the hydraulic fluid storage cavity 4402, the hydraulic fluid storage cavity 4402 is pressed to press part of hydraulic fluid in the hydraulic fluid storage cavity 4402 into the second communicating pipe 4403, the hydraulic fluid in the second communicating pipe 4403 enters the fixed end of the third telescopic rod 4404 to push the output end of the third telescopic rod 4404 and the valve plug 4405 to move towards the direction close to the third communicating pipe 4406 until one end of the valve plug 4405 away from the third telescopic rod 4404 is tightly attached to the inner wall of the third communicating pipe 4406, the two ends of the third communicating pipe 4406 are blocked again, each component in the fixed component 44 is balanced and stable again, the structure of the tensioning mechanism 4 is stable, so that the scraper chain 3 is always in a tensioned state.
Referring to fig. 1 and 6, the auxiliary lubrication mechanism 5 includes a limit housing 51, the limit housing 51 is fixedly mounted on the scraper main body 1, and the limit housing 51 is disposed in the middle of the scraper chain 3, a lubricant storage cavity 52 is fixedly mounted on the limit housing 51, lubricant is stored in the lubricant storage cavity 52, a plurality of evenly distributed oil injection ports 53 are disposed on the lubricant storage cavity 52, the plurality of oil injection ports 53 are all communicated with the lubricant storage cavity 52, and the number of the oil injection ports 53 is not more than four. The lubricating oil storage cavity 52 is also provided with an air inlet 58, the air inlet 58 is communicated with the lubricating oil storage cavity 52 and is arranged at the top of the lubricating oil storage cavity 52, a second one-way valve 59 is arranged on the air inlet 58, and under the action of the second one-way valve 59, the air inlet 58 only supplies air outside the lubricating oil storage cavity 52 to enter the lubricating oil storage cavity 52 through the air inlet 58. The top of the lubricating oil storage cavity 52 is fixedly provided with a second push plate 54, the second push plate 54 is slidably arranged on the limiting shell 51, a plurality of evenly distributed sixth springs 57 are fixedly arranged on the second push plate 54, the number of the sixth springs 57 is not less than two, one end, far away from the second push plate 54, of the sixth springs 57 is fixedly connected with the limiting shell 51, and the axial direction of the sixth springs 57 is the same as the sliding direction of the second push plate 54 on the limiting shell 51. The second push plate 54 is rotatably provided with a rotating shaft 55, the rotating shaft 55 is sleeved with a driven spur gear 56, the driven spur gear 56 is coaxially arranged with the rotating shaft 55, the driven spur gear 56 is meshed with the middle section of the scraper chain 3, and the driven spur gear 56 is covered on a plurality of oil injection ports 53.
When scraper chain 3 is not hard up, scraper chain 3 middle section sags and then plays the thrust of keeping away from scraper chain 3 direction to driven spur gear 56, driven spur gear 56 atress and then drive pivot 55 to be kept away from scraper chain 3 direction and remove, sixth spring 57 length extension, simultaneously pivot 55 moves down and then drive second push pedal 54 and remove to be kept away from scraper chain 3 direction, second push pedal 54 moves and then compresses lubricating oil storage chamber 52, lubricating oil storage chamber 52 is pressurized and then spouts and spouts the lubricating oil that stores in the lubricating oil storage chamber 52 to driven spur gear 56 through spouting port 53, driven spur gear 56 is rotated under the drive of scraper chain 3 on scraping the scraper chain 3, realize the lubrication to scraper chain 3, improve the transmission efficiency of scraper chain 3.
The embodiment of the application provides an implementation principle of an automatic tensioning device for a chain of a coal mine underground scraper machine, which comprises the following steps: when the scraper chain 3 is loosened during operation, the loosening state of the scraper chain 3 is fed back to the feedback assembly 43 through the transmission assembly 42, the feedback assembly 43 is stressed and then drives the fixing assembly 44 to work, the fixing assembly 44 is stressed and then plays a supporting role on the feedback assembly 43 and the transmission assembly 42, the scraper chain 3 is always in a tensioning state, the transmission efficiency is prevented from being influenced due to loosening of the scraper chain 3, and the service life of the scraper chain 3 is prolonged.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. An automatic overspeed device tensioner of scraper chain in pit in colliery for install on scraper chain (3), its characterized in that: comprises a tensioning mechanism (4) and an auxiliary lubrication mechanism (5) for lubricating a scraper chain (3);
the tensioning mechanism (4) comprises two symmetrically arranged mounting substrates (41), the two mounting substrates (41) are fixedly connected with the scraper main body (1), feedback assemblies (43) are arranged on the two mounting substrates (41), one ends of the feedback assemblies (43) are connected with a transmission assembly (42), and the transmission assembly (42) is connected with the scraper chain (3);
the feedback assembly (43) is used for feeding back the state of the chain (3) of the transmission scraper machine;
the other end of the feedback component (43) is connected with a fixing component (44), and the fixing component (44) is used for supporting and fixing the transmission component (42).
2. The automatic tensioning device for a chain of a coal mine underground scraper machine according to claim 1, wherein: the two feedback assemblies (43) comprise a plurality of first telescopic rods (431), first springs (4311), first communication pipes (432), second telescopic rods (433) and second springs (4331);
the number of the first telescopic rods (431) is not less than one, the number of the first telescopic rods (431) is not more than three, a first spring (4311) is arranged in each first telescopic rod (431), one end of each first spring (4311) is fixedly connected with the output end of each first telescopic rod (431), the other end of each first spring (4311) is fixedly connected with one end, far away from the output end, of the fixed end of each first telescopic rod (431), and one end, far away from the fixed end, of each first telescopic rod (431) is connected with a transmission assembly (42);
each first telescopic link (431) stiff end is kept away from and is all linked together on the one end of output has first communication pipe (432), each first communication pipe (432) keep away from the one end that first telescopic link (431) was kept away from with second telescopic link (433) stiff end keep away from the one end intercommunication of output, second spring (4331) one end with second telescopic link (433) output fixed connection, second spring (4331) other end with one end fixed connection that output was kept away from to second telescopic link (433) stiff end, one end that stiff end was kept away from to second telescopic link (433) output is connected with fixed subassembly (44).
3. The automatic tensioning device for a chain of a scraper machine under a coal mine, as claimed in claim 2, wherein: the transmission assembly (42) comprises a plurality of transmission spur gears (421) and a plurality of mounting plates (422);
the number of the mounting plates (422) is the same as that of the first telescopic rods (431), and the mounting plates (422) are respectively and fixedly arranged at one end, far away from the fixed end, of the output ends of the first telescopic rods (431);
and each mounting plate (422) is rotatably provided with a transmission straight gear (421), and each transmission straight gear (421) is in meshed connection with the scraper chain (3).
4. The automatic tensioning device for a chain of a scraper machine under a coal mine, as claimed in claim 2, wherein: the fixing assembly (44) comprises a first push plate (4401), a hydraulic fluid storage cavity (4402), a second communicating pipe (4403), a third telescopic rod (4404), a third spring (44041), a third communicating pipe (4406), a valve plug (4405), a fourth telescopic rod (4408), a fourth spring (44081), a fixing plate (4409) and a sliding plate (4410);
the first push plate (4401) is fixedly connected with the output end of the second telescopic rod (433), one end, away from the second telescopic rod (433), of the first push plate (4401) is abutted against the hydraulic fluid storage cavity (4402), the hydraulic fluid storage cavity (4402) is fixedly arranged on the sliding plate (4410), and the sliding plate (4410) is slidably arranged on the mounting substrate (41);
the hydraulic fluid storage cavity (4402) is communicated with a second communicating pipe (4403), one end of the second communicating pipe (4403) away from the hydraulic fluid storage cavity (4402) is communicated with one end of the third telescopic rod (4404) away from the output end, a third spring (44041) is installed in the third telescopic rod (4404), one end of the third spring (44041) is fixedly connected with the output end of the third telescopic rod (4404), the other end of the third spring (44041) is fixedly connected with one end of the third telescopic rod (4404) away from the output end, one end of the third telescopic rod (4404) away from the fixed end is fixedly connected with a valve plug (4405), the valve plug (4405) is embedded in the third communicating pipe (4406) and is slidably installed in the third communicating pipe (4406), and two ends of the third communicating pipe (4406) are respectively communicated with two ends of the fixed end of the fourth telescopic rod (4408);
the output end of the fourth telescopic rod (4408) is fixedly connected with the sliding plate (4410), the fixed end of the fourth telescopic rod (4408) is fixedly connected with the fixed plate (4409), and the fixed plate (4409) is fixedly arranged on the mounting substrate (41);
install fourth spring (44081) in fourth telescopic link (4408), fourth spring (44081) one end with fourth telescopic link (4408) output fixed connection, fourth spring (44081) other end with the one end fixed connection that output was kept away from to fourth telescopic link (4408) stiff end.
5. The automatic tensioning device for a chain of a coal mine underground scraper machine according to claim 4, wherein: one end of the fixed end of the fourth telescopic rod (4408) is communicated with one end of a fourth communicating pipe (4407), and the other end of the fourth communicating pipe (4407) is communicated with the other end of the fixed end of the fourth telescopic rod (4408);
the fourth communicating pipe (4407) is provided with a first one-way valve (44071).
6. The automatic tensioning device for a chain of a coal mine underground scraper machine according to claim 4, wherein: a plurality of fifth telescopic rods (4411) are arranged between the fixed plate (4409) and the sliding plate (4410), the number of the fifth telescopic rods (4411) is not less than two, one end of each fifth telescopic rod (4411) is fixedly connected with the fixed plate (4409), and the other end of each fifth telescopic rod (4411) is fixedly connected with the sliding plate (4410);
and each fifth telescopic rod (4411) is sleeved with a fifth spring (44111), and two ends of each fifth spring (44111) are fixedly connected with the fixing plate (4409) and the sliding plate (4410) respectively.
7. The automatic tensioning device for a chain of a coal mine underground scraper machine according to claim 1, wherein: the auxiliary lubrication mechanism (5) comprises a limit shell (51), a lubricating oil storage cavity (52), an oil injection port (53), a second push plate (54) and a sixth spring (57);
limiting shell (51) fixed mounting is on scraper machine main part (1), the one end in fixedly mounting lubricating oil storage chamber (52) on limiting shell (51), several evenly distributed's oil spout (53) have been seted up on lubricating oil storage chamber (52), each oil spout (53) all with lubricating oil storage chamber (52) intercommunication, fixed mounting has second push pedal (54) on lubricating oil storage chamber (52) other end, second push pedal (54) slidable mounting is in on limiting shell (51), second push pedal (54) are kept away from fixedly mounting has several evenly distributed's sixth spring (57) on the one end in lubricating oil storage chamber (52), each sixth spring (57) other end fixed mounting is in on limiting shell (51).
8. The automatic tensioning device for a chain of a coal mine underground scraper machine according to claim 7, wherein: the second push plate (54) is rotatably provided with a rotating shaft (55), the rotating shaft (55) is coaxially and fixedly provided with a driven spur gear (56), and the driven spur gear (56) is meshed and connected with the scraper chain (3).
9. The automatic tensioning device for a chain of a coal mine underground scraper machine according to claim 7, wherein: an air inlet (58) is formed in the lubricating oil storage cavity (52), and the air inlet (58) is communicated with the lubricating oil storage cavity (52);
the air inlet (58) is provided with a second one-way valve (59).
10. The automatic tensioning device for a chain of a scraper machine in a coal mine, as claimed in claim 3, wherein: among the plurality of transmission spur gears (421), at least one transmission spur gear (421) is coaxial with and fixedly connected with the output shaft of the scraper motor (2);
among the plurality of transmission spur gears (421), at least one transmission spur gear (421) is coaxially and fixedly connected with the input shaft of the scraper main body (1).
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| CN202310322553.8A CN116022516B (en) | 2023-03-30 | 2023-03-30 | Automatic tensioning device for chain of underground coal mine scraper |
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