CN215796438U - Vertical gear box for coal mine chain tightening - Google Patents

Abstract

The utility model relates to the technical field of coal mine chain tightening, in particular to a vertical gear box for coal mine chain tightening, which comprises an oil cylinder, an upper box body, a lower box body, a proximity switch, a pin shaft, a mounting seat, an input gear shaft, a transition sleeve, an idler wheel, a piston rod, a locking nut, a split pin and a disc spring, wherein a cover cylinder is arranged on a scraper machine on which the gear box is mounted, a chain tightening big gear is arranged inside the cover cylinder and connected with a chain wheel, an A port and a B port are arranged on the oil cylinder, the upper box body and the lower box body are connected through the pin shaft, the lower box body is fixed on the cover cylinder of the scraper machine through the mounting seat, and through the arrangement of structures such as the oil cylinder and the proximity switch, manual operation is replaced by oil cylinder driving, the labor intensity is reduced, and the oil cylinder is used for driving the large control force and is difficult to clamp; the remote control system can be remotely operated by hydraulic control or electric control, has high safety, and can realize digitization, intellectualization and automation by electric control.

Description

Vertical gear box for coal mine chain tightening

Technical Field

The utility model relates to the technical field of coal mine chain tightening, in particular to a vertical gear box for a coal mine chain tightening.

Background

In order to ensure the safe operation of the scraper conveyor, a certain tension should be provided in the scraper chain, and a certain pretightening force is usually applied to the scraper chain by a chain tightener. When the chain is tightened, one end of the scraper chain is fixed on the side plate of the headstock or on the chain blocking chute, the other end of the scraper chain bypasses the chain wheel of the handpiece, the chain wheel is reversed, the scraper chain is tightened immediately, when the tension of the scraper chain is proper, the chain tightener prevents the scraper chain from loosening, and after the two scraper chain heads are connected, the chain tightener releases the brake.

Among the prior art, hydraulic pressure chain tightener is one kind of the current common chain tightener, and chain tightener has the gear box, and by separation and the meshing of handle control chain tightener and main drive gearbox, realize operating condition and tight chain state, manual operation is troublesome and laboursome, and intensity of labour is big, and personnel's application of force is not enough, sometimes has the condition that blocks and can't pull, must lean on into scraper operation, and the degree of safety is poor, can't realize the intelligent of digitization.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a vertical gearbox for a coal mine chain tensioner.

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

the utility model provides a colliery is vertical gear box for chain tightening, includes the hydro-cylinder, goes up the box, proximity switch, round pin axle, mount pad, input gear axle, transition cover, idler, piston rod, lock nut, split pin and dish spring down, and what the gear box was installed scrapes the trigger and is provided with a cover section of thick bamboo, and the inside of a cover section of thick bamboo is provided with the tight chain gear wheel, and tight chain gear wheel connects the sprocket, is equipped with A mouth and B mouth on the hydro-cylinder, go up the box and pass through the round pin hub connection with lower box, lower box passes through the mount pad to be fixed on the cover section of thick bamboo of scraping the trigger, goes up box accessible round pin axle rotation and opens and shuts, the transition cover links to each other with hydraulic motor, and the box is connected to the cylinder of hydro-cylinder, the piston rod passes through lock nut, split pin and dish spring and is connected under on the box, because the effect of dish spring, allows the piston rod along with go up the box rotation to certain angle.

Preferably, when an oil inlet is formed in the B port of the oil cylinder, the piston rod retracts, the idler wheel descends along with the upper box body, when the upper box body and the lower box body are closed, the proximity switch is triggered, the idler wheel descends to a position meshed with the tight chain large gear inside the cover cylinder, the hydraulic motor drives the input gear through the transition sleeve to drive the meshed idler wheel to rotate, and power is conveyed to the chain wheel to achieve tight chain.

Preferably, when an oil inlet A of the oil cylinder enters, the piston rod extends out, the idler wheel is separated from the chain tightening large gear along with the ascending of the upper box body, the proximity switch is separated, and a signal is sent to the controller to monitor the state.

The utility model has the beneficial effects that: compared with the prior art, the utility model has simple structure and reasonable design, and can reduce labor intensity by utilizing the oil cylinder to drive to replace manual operation through the arrangement of structures such as the oil cylinder, the proximity switch and the like, and the oil cylinder is used for driving large operating force and is difficult to clamp; the remote control system can be remotely operated by hydraulic control or electric control, has high safety, and can realize digitization, intellectualization and automation by electric control.

Drawings

FIG. 1 is a schematic structural diagram of a vertical gearbox for a coal mine chain tensioner according to the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1 in accordance with the present invention.

In the figure: the device comprises an oil cylinder 1, an upper box 2, a lower box 3, a proximity switch 4, a pin shaft 5, a mounting seat 6, an input gear shaft 7, a transition sleeve 8, an idler wheel 9, a piston rod 10, a locking nut 11, a split pin 12 and a disc spring 13.

Detailed Description

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

Referring to fig. 1-2, a vertical gear box for coal mine chain tensioning comprises an oil cylinder 1, an upper box body 2, a lower box body 3, a proximity switch 4, a pin shaft 5, a mounting seat 6, an input gear shaft 7, a transition sleeve 8, an idler wheel 9, a piston rod 10, a lock nut 11, a split pin 12 and a disc spring 13, wherein a cover cylinder is arranged on a scraper mounted on the gear box, a chain tensioning gearwheel is arranged inside the cover cylinder, the chain tensioning gearwheel is connected with a sprocket, the oil cylinder 1 is provided with an opening A and an opening B, the upper box body 2 is connected with the lower box body 3 through the pin shaft 5, the lower box body 3 is fixed on the cover cylinder of the scraper through the mounting seat 6, the upper box body 2 can be opened and closed through the pin shaft 5 in a rotating manner, the transition sleeve 8 is connected with a hydraulic motor, the cylinder barrel of the oil cylinder 1 is connected with the upper box body 2, the piston rod 10 is connected with the lower box body 3 through the lock nut 11, the split pin 12 and the disc spring 13, and the disc spring 13 acts, allowing the piston rod 10 to rotate to a certain angle with the upper housing 2.

The oil cylinder 1 is used for driving to replace manual operation through the arrangement of the structures of the oil cylinder 1, the proximity switch 4 and the like, so that the labor intensity can be reduced, and the oil cylinder 1 is large in driving force and not easy to clamp; the remote control system can be remotely operated by hydraulic control or electric control, has high safety, and can realize digitization, intellectualization and automation by electric control.

When the oil enters the port B of the oil cylinder 1, the piston rod 10 retracts, the idler wheel 9 descends along with the upper box body 2, when the upper box body 2 is closed with the lower box body 3, the proximity switch 4 is triggered, the idler wheel 9 descends to a position meshed with the tight chain big gear inside the cover cylinder, the hydraulic motor drives the input gear through the transition sleeve 8, the idler wheel 9 meshed with the idle gear is driven to rotate, power is conveyed to the chain wheel to realize tight chain, when the oil enters the port A of the oil cylinder 1, the piston rod 10 extends out, the idler wheel 9 is separated from the tight chain big gear along with the ascending of the upper box body 2, the proximity switch 4 is separated, and a signal is sent to the controller to monitor the state.

In this embodiment, when needs chain tightening during operation, hydro-cylinder 1B mouth oil feed, 1 piston rod 10 of hydro-cylinder retracts this moment, idler 9 descends along with last box 2, until box 3 closure about, proximity switch 4 triggers, idler 9 descends to the position with the tight chain gear wheel meshing in the cover section of thick bamboo, external power source hydraulic motor drives input gear through transition cover 8 this moment, drive engaged with idler 9 and rotate, thereby carry the sprocket with power and realize tight chain, when not needing tight chain, hydro-cylinder 1A mouth oil feed, piston rod 10 stretches out, idler 9 rises along with last box 2, thereby break away from tight chain gear wheel, tight chain ware breaks away from with the main system of driving this moment, the normal work of main system of driving can not drive tight chain ware operation, proximity switch 4 breaks away from simultaneously, send a signal and be used for monitoring state for the controller.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (3)

1. A vertical gear box for coal mine chain tensioning comprises an oil cylinder (1), an upper box body (2), a lower box body (3), a proximity switch (4), a pin shaft (5), a mounting seat (6), an input gear shaft (7), a transition sleeve (8), an idler (9), a piston rod (10), a locking nut (11), a split pin (12) and a disc spring (13), wherein a cover cylinder is arranged on a scraper machine on which the gear box is mounted, a chain tensioning gear wheel is arranged inside the cover cylinder and connected with a sprocket, an A port and a B port are arranged on the oil cylinder (1), and the vertical gear box is characterized in that the upper box body (2) and the lower box body (3) are connected through the pin shaft (5), the lower box body (3) is fixed on the cover cylinder of the scraper machine through the mounting seat (6), the upper box body (2) can be opened and closed through the pin shaft (5) in a rotating manner, the transition sleeve (8) is connected with a hydraulic motor, the cylinder barrel of the oil cylinder (1) is connected with the upper box body (2), the piston rod (10) is connected with the lower box body (3) through a locking nut (11), a cotter pin (12) and a disc spring (13), and the piston rod (10) is allowed to rotate to a certain angle along with the upper box body (2) under the action of the disc spring (13).

2. The vertical gearbox for the coal mine chain tightening according to claim 1, characterized in that when the oil cylinder (1) enters the B port, the piston rod (10) retracts, the idle gear (9) descends along with the upper box body (2), when the upper box body (2) and the lower box body (3) are closed, the proximity switch (4) is triggered, the idle gear (9) descends to a position meshed with a chain tightening gear wheel inside the cover cylinder, and the hydraulic motor drives the input gear through the transition sleeve (8) to drive the meshed idle gear (9) to rotate, so that power is transmitted to the chain wheel to realize chain tightening.

3. The vertical gearbox for the coal mine chain tightening according to claim 1, characterized in that when an inlet A of the oil cylinder (1) is filled with oil, the piston rod (10) extends out, the idler wheel (9) is separated from the chain tightening large gear along with the ascending of the upper box body (2), the proximity switch (4) is separated, and a signal is sent to a controller to monitor the state.

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