A system for on-line repair of a flight and chain of an underground coal mine flightbarrier

Abstract

The utility model discloses a system for the system of the chain on -line maintenance of coal mine underground scraper blade and chain, include: tensioning equipment, place in the scraper blade of needing maintenance's side, the trend of scraper blade and the placement trend of tensioning equipment are perpendicular to each other, maintenance clamping plate is the "n" shape structure of opening downward, and the opening place is used for the scraper blade of needing maintenance of bending extension, one side of maintenance clamping plate and the connector fixed connection of tensioning end of tensioning equipment, chain pull rope, one end is fixed on maintenance clamping plate, and the other end is fixedly connected with the hook, and the hook is used for hanging on the chain of needing maintenance of fracture, the utility model discloses can straighten the scraper blade under the condition of not starting motor, and also need not start motor when replacing scraper blade and maintaining the chain of fracture, and the safety hidden danger existing in prior art is reduced greatly.

Description

Technical Field

[0001] This utility model belongs to the field of scraper conveyor maintenance, and in particular relates to a system for online maintenance of scrapers and chains of underground scraper conveyors in coal mines. Background Technology

[0002] The 40T scraper conveyor in the mine often deforms during the transport of materials from the working face. When pulled to the head of the conveyor, the deformed scraper causes the chain to derail. During maintenance, the chain needs to be disassembled and the scraper replaced. When reconnecting the chain, one person briefly operates the scraper conveyor motor while two other people connect the chain at the head of the conveyor. Both motors are 55KW motors. The machine is running during the chain connection, which is very dangerous and frequently causes workers' hands to be crushed, resulting in minor abrasions or even fractures. In addition, since the scraper conveyor transports gangue, the scraper screws often wear out and lose their threads. Two people need to work together to use a sledgehammer and a chopping block to break open the nuts and replace them, which poses a significant safety hazard. Utility Model Content

[0003] The purpose of this invention is to provide a system for online maintenance of scraper blades and chains of underground scraper conveyors in coal mines, in order to solve the problems of safety hazards and the need to start the motor during maintenance of scraper conveyor chains and scraper blades in the prior art.

[0004] This utility model adopts the following technical solution: a system for online maintenance of scraper blades and chains of underground scraper conveyors in coal mines, comprising: The tensioning equipment is placed next to the scraper that needs maintenance, with the direction of the scraper perpendicular to the direction in which the tensioning equipment is placed. The maintenance clamp is an "n"-shaped structure with its opening facing downwards. The opening is for the scraper that needs maintenance to be bent to extend into. One side of the maintenance clamp is fixedly connected to the connector at the tensioning end of the tensioning equipment. The chain pull rope has one end fixed to the maintenance clamp and the other end fixedly connected to a hook, which is used to hang on the chain that has broken and needs repair. Among them, the tensioning equipment is used for: When the scraper blade bends and needs repair, the tensioning equipment applies force to the repair clamp, thereby straightening the bent part of the scraper blade. When a chain breaks and needs repair, the tensioning equipment pulls the repair clamp and the chain traction rope in sequence, which in turn pulls the chain, keeping the broken parts of the chain interlocked, thus allowing the chain to be repaired.

[0005] The beneficial effects of this utility model are: This invention can straighten the scraper without starting the motor, and also does not require starting the motor when replacing the scraper or repairing a broken chain, which greatly reduces the safety hazards present in the prior art. This invention, by setting a force-positioning mechanism, can fix the fixed end of the tensioning equipment, thereby straightening and pulling bent scrapers and broken chains, greatly reducing the problem of unstable force in the tensioning equipment. Attached Figure Description

[0006] Figure 1 This is a first-view structural schematic diagram of the present invention; Figure 2 This is a structural schematic diagram of the present invention from a second perspective.

[0007] Among them: 10. Tensioning equipment; 11. Maintenance clamp; 12. Chain pulling rope; 13. Force positioning mechanism; 14. Force bearing plate; 15. Side fixing plate; 16. Force block; 17. Scraper; 18. Chain. Detailed Implementation

[0008] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0009] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more. The term "orientation" in this utility model refers to the orientation of the utility model within the... Figure 1 Description of the state's progression.

[0010] This utility model discloses a system for online maintenance of scraper blades and chains of underground scraper conveyors in coal mines, such as... Figure 1 and Figure 2 As shown, it includes: tensioning equipment 10, maintenance clamp 11, and chain tension rope 12.

[0011] The tensioning device 10 is placed next to the scraper 17 that needs maintenance, and the direction of the scraper 17 is perpendicular to the direction in which the tensioning device 10 is placed.

[0012] The maintenance clamp 11 has an "n"-shaped structure with the opening facing downwards. The opening of the maintenance clamp 11 is used for the scraper 17 that needs to be repaired due to bending to extend into. One side of the maintenance clamp 11 is fixedly connected to the connector at the tensioning end of the tensioning device 10.

[0013] One end of the chain pull rope 12 is fixed to the maintenance clamp 11, and the other end of the chain pull rope 12 is fixedly connected to a hook, which is used to hang on the chain 18 that has broken and needs to be repaired.

[0014] Among them, tensioning equipment 10 is used for: When the scraper 17 bends and needs repair, the tensioning device 10 applies force to the repair clamp 11, thereby straightening the bend of the scraper 17. When chain 18 breaks and needs repair, the tensioning device 10 pulls the repair clamp 11 and the chain pulling rope 12 in sequence, which in turn causes the chain pulling rope 12 to pull the chain 18, so that the broken parts of the chain 18 are kept overlapping, and thus the chain 18 can be repaired.

[0015] During maintenance, if the scraper 17 needs to be straightened, then it is not necessary to hook the chain pull rope 12 onto the chain 18. If the chain 18 needs to be pulled, then it is not necessary to extend the maintenance clamp 1111 into both sides of the scraper 17. Therefore, during maintenance, this utility model can either repair the hanging plate first or repair the chain 18 first, and can be repaired according to the needs. If the scraper 17 is bent but the chain 18 is intact, then the scraper 17 can be straightened. If the scraper 17 is bent and the chain 18 is also broken, then the scraper 17 can be tensioned first using the maintenance clamp 11 to keep the scraper 17 horizontal, and then the chain 18 can be pulled so that the two ends of the broken chain 18 overlap each other, and then the chain 18 can be rejoined.

[0016] This utility model also includes a force-bearing positioning mechanism 13, which includes a force-bearing bearing plate 14 and two side fixing plates 15. The force-bearing bearing plate 14 is located between the two sides of the scraper conveyor and is horizontally arranged. A force-bearing block 16 is fixedly connected to the force-bearing bearing plate 14. The force-bearing block 16 is arranged corresponding to the tensioning device 10. The force-bearing block 16 is used to abut against the fixed end of the tensioning device 10, thereby enabling the tensioning device 10 to tighten the bent scraper 17 or the broken chain 18.

[0017] The two side fixing plates 15 have an "n" shaped structure. The two side fixing plates 15 are located on both sides of the load-bearing plate 14. The inner sides of the two side fixing plates 15 are fixedly connected to the two ends of the load-bearing plate 14. The openings of the two side fixing plates 15 are used to extend into the groove sides of the scraper machine on the left and right sides, and then the entire load-bearing positioning mechanism 13 is fixed to the groove sides of the hanging plate machine by tightening screws.

[0018] Two chain pull ropes 12 are provided, and are used to hook onto the two chains 18 of the scraper conveyor when maintaining the chain 18.

[0019] The horizontal height of the load-bearing plate 14 is flush with the lower opening of the two side fixing plates 15. Example

[0020] In a certain mine, scraper 17 is used to transport gangue, and the screws on scraper 17 often wear out and lose their threads. It requires two people to work together with a sledgehammer and a chopping block to break open the nuts and replace them, which poses a great safety hazard.

[0021] When using this invention for maintenance, the maintenance clamp 11 is secured to the scraper 17. A horizontally positioned guard plate, 45cm in length and width, can be welded to the upper side of the force-bearing block 16. This guard plate prevents small stones extruded by the scraper 17 during operation from injuring workers. When straightening the scraper 17, both ends of the scraper 17 are fixed by the scraper 17 machine's chain 18, so the scraper 17 will maintain a certain balance. The tensioning device is placed next to the scraper 17 to be maintained. The tensioning device is powered by compressed air, which drives the hydraulic system. By operating the hydraulic system handle, the tensioning device can straighten the scraper 17. The operation is convenient and can be completed by one person.

[0022] In the existing technology, the conveyor scraper 17 needs to be inspected every shift. When replacing the scraper 17, the screws are severely worn over a long period of time, requiring manual labor to swing a sledgehammer and use a chopper to smash it, which affects the production progress for a long time. After the modification, only one person is needed to operate it.

[0023] Previously, each shift required two people to inspect and replace scraper blades 17 and screws for half a shift. Converted to one person's monthly salary, one person's daily wage was 300 yuan * 30 days = 9000 yuan * 12 months = approximately 108,000 yuan. The workface used two conveyors. The material cost of one scraper blade 17 was 50 yuan, and 6 scrapers were replaced per day, which was 300 yuan per day. 300 * 30 days = 9000 yuan, 9000 * 12 months = 108,000 yuan. Roughly calculated, the savings in labor and material costs were approximately 200,000 yuan per year.

[0024] In this utility model, the tensioning machine head and the pump box together weigh approximately 60 catties, making them easy to move around. During maintenance, they can be moved freely, and the scraper 17 can be repaired according to its position, which is very convenient.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A system for online maintenance of scraper blades and chains of underground scraper conveyors in coal mines, characterized in that, include: The tensioning device (10) is placed next to the scraper (17) that needs maintenance, and the direction of the scraper (17) is perpendicular to the direction in which the tensioning device (10) is placed. The maintenance clamp (11) is an "n"-shaped structure with the opening facing downwards, and the opening is for the scraper (17) that needs to be repaired to extend into; one side of the maintenance clamp (11) is fixedly connected to the connector at the tensioning end of the tensioning device (10); The chain pull rope (12) has one end fixed to the maintenance clamp (11) and the other end fixedly connected to a hook, which is used to hang on the chain (18) that has broken and needs to be repaired. The tensioning device (10) is used for: When the scraper (17) bends and needs repair, the tensioning device (10) applies force to the repair clamp (11), thereby straightening the bend of the scraper (17) by the repair clamp (11). When the chain (18) breaks and needs repair, the maintenance clamp (11) and the chain pulling rope (12) are pulled in sequence by the tensioning device (10), which in turn causes the chain pulling rope (12) to pull the chain (18), so that the broken chain (18) remains connected to each other, and the chain (18) is repaired.

2. The system for online maintenance of scraper blades and chains of underground scraper conveyors in coal mines according to claim 1, characterized in that, Also includes: The force positioning mechanism (13) includes: a force bearing plate (14) and two side fixing plates (15). The force bearing plate (14) is located between the two sides of the scraper and is horizontally arranged. A force block (16) is fixedly connected to the force bearing plate (14). The force block (16) is arranged corresponding to the tensioning device (10). The force block (16) is used to abut against the fixed end of the tensioning device (10), thereby enabling the tensioning device (10) to tighten the bent scraper (17) or the broken chain (18). The two side fixing plates (15) have an "n" shaped structure. The two side fixing plates (15) are located on both sides of the load-bearing plate (14). The inner sides of the two side fixing plates (15) are fixedly connected to the two ends of the load-bearing plate (14). The openings of the two side fixing plates (15) are used to extend into the grooves on the left and right sides of the scraper machine, and then the entire force positioning mechanism (13) is fixed on the groove of the hanging plate machine by tightening screws.

3. The system for online maintenance of scraper blades and chains of underground scraper conveyors in coal mines according to claim 1, characterized in that, Two chain pull ropes (12) are provided, and are used to hook onto the two chains (18) of the scraper conveyor when repairing the chain (18).

4. The system for online maintenance of scraper blades and chains of underground scraper conveyors in coal mines according to claim 2, characterized in that, The horizontal height of the load-bearing plate (14) is flush with the lower opening of the two side fixing plates (15).

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