CN218464675U

CN218464675U - Screw rod type scraper chain tensioning structure

Info

Publication number: CN218464675U
Application number: CN202222494544.0U
Authority: CN
Inventors: 牛军辉; 潘昕; 高轩
Original assignee: Huating Coal Group Co Ltd
Current assignee: Huating Coal Group Co Ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-02-10
Anticipated expiration: 2032-09-20

Abstract

The utility model discloses a screw rod formula scrapes chain tensioning structure relates to and scrapes chain structure technical field, and it is not hard up to drop to current hydraulic pressure tension device cardboard, causes the problem of stretching out the inefficacy easily, presents following scheme, including first fixed plate, the top of first fixed plate is fixed with the fixed block, and the both sides of fixed block all are provided with lock nut, the fixed block all is provided with the lead screw with lock nut. The utility model discloses an adopt screw drive to scrape the board chain and open and advance, transmission torque is big, the lead screw design has spring buffer structure, adopt two lock nuts to lock locking, shock resistance is strong, open and advance the effect reliably, difficult not hard up, avoided the loaded down with trivial details of single-link hydraulic line, saved cardboard, hydraulic pressure rubber tube, material consumption such as control valve, guarantee to dig the first cargo airplane shock resistance of anchor machine and open and advance the reliability, reduce first cargo airplane fault rate, alleviate intensity of labour, improved production efficiency.

Description

Screw rod type scraper chain tensioning structure

Technical Field

The utility model relates to a scrape chain technical field, especially relate to a chain tensioning texture is scraped to lead screw formula.

Background

The scraper chain of the first conveyor of the existing underground coal mine digging and anchoring machine adopts a hydraulic oil cylinder and clamping plate mode to carry out tensioning operation, needs to be provided with an independent hydraulic pipeline and a control valve, is convenient to tension, saves manpower, and is the mainstream trend of scraping equipment of the first conveyor of the existing digging and anchoring machine.

However, in the working process under the conditions of high rock hardness and poor environment, the vibration and displacement become large along with the first conveyor when conveying materials with large hardness and uneven particles, and the prior technical scheme has the following defects:

after the existing scraper chain is deformed and elongated, the scraper can generate loose blocking in the running process, the blocking plate of the hydraulic tensioning device is loosened and falls off, tensioning failure is easily caused, equipment is required to be stopped to process faults, tensioning operation is carried out again, the continuous operation capability of each system of the driving and anchoring machine is greatly influenced, and the exertion of the overall performance of the driving and anchoring machine is hindered.

SUMMERY OF THE UTILITY MODEL

The not enough to prior art, the utility model provides a chain take-up is scraped to lead screw formula mutually supports with straining device through fixed block, lock nut, lead screw that set up, has overcome prior art's not enough, and effectual among the solution prior art hydraulic pressure is opened and is advanced the device cardboard and become flexible and drop, causes the problem of opening and advancing the inefficacy easily.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a screw rod formula scraper chain tensioning structure, includes first fixed plate, the top of first fixed plate is fixed with the fixed block, and the both sides of fixed block all are provided with lock nut, the fixed block all is provided with the lead screw with lock nut, and the outer wall of lead screw cup joints and is fixed with solid fixed ring, the one end that the fixed block was kept away from to the lead screw is pegged graft and is had straining device, and straining device's outside is provided with the mount pad, the bottom of mount pad is fixed with the second fixed plate, and the one end of mount pad is provided with spacing bolt.

The second fixed plate passes through fixing bolt to be fixed to the chute side, first fixed plate passes through fixing bolt to be fixed to the drive arrangement side, the fixed block drives lead screw and first fixed plate assembly and removes, and then drive arrangement and remove on the track that slides, realize scraping the board chain and stretch into, the lead screw drives drive arrangement with first fixed plate and removes and stretch into the back, two lock nut fastenings around utilizing, prevent effectively that the lead screw is not hard up, guarantee to stretch into the device reliability, the lead screw, the connecting pipe, the go-between, a spring, the mount pad assembly constitutes the buffer structure that stretches into, during atress, the lead screw extrudees go-between and connecting pipe assembly through solid fixed ring, and then make the spring atress shrink, guarantee to scrape the board chain device and can effectively absorb the impact force bearing the impact force, guaranteed to scrape the board chain and be in the state of stretching all the time, avoid scraping board chain atress overload damage and damaging, and then make the board chain

Preferably, threaded holes are formed in four corners of the top of the first fixing plate, gaskets are arranged above the threaded holes, and fixing bolts are screwed in the threaded holes.

The first fixing plate is fixed to the side of the driving device by a fixing bolt.

Preferably, the one end system of lead screw annular outer wall has the screw thread, and the other end of lead screw annular outer wall is threadless, and solid fixed ring is located the threadless annular outer wall of lead screw, and the thread groove has been seted up to the threadless one end of lead screw.

When the screw rod is inserted into the fixing block and is fastened by the front locking nut and the rear locking nut, the screw rod is effectively prevented from loosening, and the reliability of the tensioning device is ensured.

Preferably, the tensioning mechanism comprises a connecting pipe, a connecting ring and a spring, the connecting ring is sleeved and fixed at one end of the annular outer wall of the connecting pipe, and the spring is sleeved and arranged at the other end of the annular outer wall of the connecting pipe in a sliding manner.

When the scraper chain device is stressed, the lead screw extrudes the connecting ring and the connecting pipe assembly through the fixing ring, so that the spring is stressed and contracted, and the scraper chain device is guaranteed to effectively absorb the impact force when bearing the impact force.

Preferably, the annular outer wall of the connecting ring is provided with a mounting groove, a first felt oil seal is embedded in the mounting groove, a second felt oil seal is arranged at the other end of the connecting pipe, and the second felt oil seal is sleeved on the annular outer wall of the screw rod in a sliding mode.

The space in the mounting seat is blocked through the arranged first felt ring oil seal and the second felt ring oil seal, so that the lubricating oil is prevented from flowing out.

Preferably, the limiting bolt is in threaded connection with a thread groove of the screw rod, and a gasket is arranged between the limiting bolt and the mounting seat.

Through spacing bolt and lead screw spiro union, can prevent that the lead screw from taking out in the mount pad.

Preferably, threaded holes are formed in four corners of the top of the second fixing plate, gaskets are arranged above the threaded holes, and fixing bolts are screwed in the threaded holes.

The second fixing plate is fixed to the chute side face by a fixing bolt.

The utility model has the advantages that:

the chain tension of the scraper is carried out by adopting thread transmission, the transmission torque is large, the screw rod is provided with a spring buffer structure, double-fastening lock nuts are adopted for locking and looseness prevention, the impact resistance is strong, the tension effect is reliable, the looseness is not easy to occur, only equipment needs to be checked and maintained regularly, the complexity of an independent connection hydraulic pipeline is avoided, clamping plates and hydraulic rubber pipes are saved, the consumption of materials such as control valves is reduced, the impact resistance and the tension reliability of a first conveyor of the digging and anchoring machine are guaranteed, the failure rate of the first conveyor is reduced, the labor intensity is reduced, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of a screw-type scraper chain tensioning structure provided by the present invention;

fig. 2 is a rear view of the overall structure of a screw rod type scraper chain tensioning structure provided by the present invention;

fig. 3 is a schematic view of a connection structure of a first fixing plate of a screw rod type scraper chain tensioning structure provided by the present invention;

fig. 4 is a schematic diagram of a screw structure of a screw-type scraper chain tensioning structure provided by the present invention;

fig. 5 is the utility model provides a screw rod formula scraper chain tension structure's straining device structure sketch map.

In the figure: 1. a first fixing plate; 2. a gasket; 3. fixing the bolt; 4. a fixed block; 5. locking the nut; 6. a screw rod; 7. a fixing ring; 8. a tensioning mechanism; 9. a connecting pipe; 10. a connecting ring; 11. a spring; 12. a first felt oil seal; 13. a second felt oil seal; 14. a mounting seat; 15. a second fixing plate; 16. and a limiting bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The embodiment is as follows:

referring to fig. 1-5, a screw rod type scraper chain tensioning structure comprises a first fixing plate 1, threaded holes are formed in four corners of the top of the first fixing plate 1, gaskets 2 are arranged above the threaded holes, fixing bolts 3 are screwed in the threaded holes, and the first fixing plate 1 is fixed to the side face of a driving device through the fixing bolts 3.

The top of first fixed plate 1 is fixed with fixed block 4, the both sides of fixed block 4 all are provided with lock nut 5, fixed block 4 all is provided with lead screw 6 with lock nut 5, the outer wall of lead screw 6 cup joints and is fixed with solid fixed ring 7, the one end system of the 6 annular outer walls of lead screw has the screw, the other end non-thread of the 6 annular outer walls of lead screw, gu fixed ring 7 is located the 6 non-threaded annular outer walls of lead screw, the thread groove has been seted up to the 6 non-threaded one end of lead screw, after lead screw 6 is pegged graft with fixed block 4, and fasten by two lock nut 5 around, prevent effectively that lead screw 6 is not hard up, guarantee to open and to put the reliability.

The one end that fixed block 4 was kept away from to lead screw 6 is pegged graft and is had straining device 8, straining device 8 includes connecting pipe 9, go-between 10 and spring 11, go-between 10 cup joints the annular outer wall one end that is fixed in connecting pipe 9, the other end that slides in the annular outer wall of connecting pipe 9 is established to spring 11 cover, during the atress, lead screw 6 extrudees go-between 10 and connecting pipe 9 assembly through solid fixed ring 7, and then make the shrink of spring 11 atress, guarantee to scrape the chain device and can effectively absorb the impact force bearing the impact force, the mounting groove has been seted up to the annular outer wall of go-between 10, the embedded first felt circle oil blanket 12 that is equipped with of mounting groove, the other end of connecting pipe 9 is provided with second felt circle oil blanket 13, second felt circle oil blanket 13 cover is established and is slided on the annular outer wall of lead screw 6, shutoff is carried out the space in the mount pad 14 through the first felt circle oil blanket 12 that sets up and second felt circle oil blanket 13, prevent the outflow of lubricating oil.

The outside of straining device 8 is provided with mount pad 14, the bottom of mount pad 14 is fixed with second fixed plate 15, the one end of mount pad 14 is provided with limit bolt 16, limit bolt 16 and the thread groove spiro union of lead screw 6, be provided with packing ring 2 between limit bolt 16 and the mount pad 14, through limit bolt 16 and the spiro union of lead screw 6, can prevent that lead screw 6 from taking out from mount pad 14, the top four corners of second fixed plate 15 all sets up threaded hole, the threaded hole top all is provided with packing ring 2, the spiro union has fixing bolt 3 in the threaded hole, second fixed plate 15 passes through fixing bolt 3 to be fixed to the chute side.

The working principle is as follows:

the second fixing plate 15 is fixed to the side face of the chute through the fixing bolt 3, the first fixing plate 1 is fixed to the side face of the driving device through the fixing bolt 3, the fixing block 4 drives the screw rod 6 and the first fixing plate 1 combination body to move, and then drives the driving device to move on a sliding track, stretching of the scraper chain is achieved, the screw rod 6 and the first fixing plate 1 drive the driving device to move and stretch, the screw rod 6 and the front and rear locking nuts 5 are fastened, the screw rod 6 is effectively prevented from loosening, the reliability of the stretching device is guaranteed, the screw rod 6, the connecting pipe 9, the connecting ring 10, the spring 11 and the mounting seat 14 combination body form a stretching buffer structure, when stressed, the screw rod 6 extrudes the connecting ring 10 and the connecting pipe 9 combination body through the fixing ring 7, and then the spring 11 is enabled to be stressed and contracted, the scraper chain device is guaranteed to be capable of effectively absorbing impact force when bearing the impact force, the scraper chain is guaranteed to be always in a stretching state, and overload damage of the scraper chain is avoided.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a screw rod formula scraper chain tensioning texture, includes first fixed plate (1), its characterized in that, the top of first fixed plate (1) is fixed with fixed block (4), and the both sides of fixed block (4) all are provided with lock nut (5), fixed block (4) all are provided with lead screw (6) with lock nut (5), and the outer wall of lead screw (6) cup joints and is fixed with solid fixed ring (7), the one end that fixed block (4) were kept away from in lead screw (6) is pegged graft and is had straining device (8), and the outside of straining device (8) is provided with mount pad (14), the bottom of mount pad (14) is fixed with second fixed plate (15), and the one end of mount pad (14) is provided with spacing bolt (16).

2. The screw rod type scraper chain tensioning structure according to claim 1, characterized in that four corners of the top of the first fixing plate (1) are provided with threaded holes, gaskets (2) are arranged above the threaded holes, and fixing bolts (3) are screwed in the threaded holes.

3. The screw rod type scraper chain tensioning structure as claimed in claim 1, wherein one end of the annular outer wall of the screw rod (6) is threaded, the other end of the annular outer wall of the screw rod (6) is unthreaded, the fixing ring (7) is located on the unthreaded annular outer wall of the screw rod (6), and a thread groove is formed at the unthreaded end of the screw rod (6).

4. The screw rod type scraper chain tensioning structure according to claim 1, wherein the tensioning mechanism (8) comprises a connecting pipe (9), a connecting ring (10) and a spring (11), the connecting ring (10) is sleeved and fixed at one end of the annular outer wall of the connecting pipe (9), and the spring (11) is sleeved and arranged at the other end of the annular outer wall of the connecting pipe (9).

5. The tensioning structure of the lead screw type scraper chain as claimed in claim 4, wherein the annular outer wall of the connecting ring (10) is provided with a mounting groove, a first felt oil seal (12) is embedded in the mounting groove, the other end of the connecting pipe (9) is provided with a second felt oil seal (13), and the second felt oil seal (13) is sleeved on and slides on the annular outer wall of the lead screw (6).

6. The screw rod type scraper chain tensioning structure as claimed in claim 3, characterized in that the limit bolt (16) is screwed with the thread groove of the screw rod (6), and a washer (2) is arranged between the limit bolt (16) and the mounting seat (14).

7. The screw rod type scraper chain tensioning structure according to claim 1, wherein threaded holes are formed in four corners of the top of the second fixing plate (15), gaskets (2) are arranged above the threaded holes, and fixing bolts (3) are screwed in the threaded holes.