SU1543066A1 - Advancing device of mining machine - Google Patents

Description

The invention relates to the mining industry and can be used in the feeding devices of drilling machines-. The purpose of the invention is the reduction of machine drilling time due to the exclusion of idle speed ratchet mechanism. The feeding device of the drilling machine contains a guide post, a carriage (K) 4 mounted on it, a ratchet feed mechanism with a drive, the racks 2,3 of which are fixed on the guide post. The ratchet mechanism is made in the form of a two-armed lever (DR) 8, hinged on K 4 and ratchet boxes 10, 11 bearing on their shoulders. One of the shoulders of DR 8 is connected with a drive in the form of a power cylinder (SC) 9. Case and stem 13 SO 9 pivotally connected to K 4 and DR 8. To ensure the continuity of the feed force, the ratio of the distances from the crepe places

2 figs?

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3

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of the ratchet pawls 10, 11 on the DR 8 to the hinge 14 of the mounting of the DR 8 on K 4 is proportional to the ratio of the piston area to the piston area without the rod area 13 of SC 9. When the fluid is fed into the piston cavity of the SC 9, the DR 8 rotates. . Dog 11 slides up the rail 3

and sinks into the groove of the rail 3 under the action of the spring 16, which presses the dog against the rail 2 and 3. When fluid is supplied into the rod cavity of the SC 9, the DR 8 rotates, the dog 10 slides up along the rail 2 and sinks under the action of the spring 16 into the rail of the rail 2. When this K 4 moves up. 1 ep f-ly, 2 ill.

The invention relates to the field of the mining industry and can be used in the falling mechanisms of drilling machines.

The purpose of the invention is to reduce machine drilling time by eliminating the idle speed of the ratchet and ensuring the constancy of the feed effort.

1 schematically shows a drilling rig; in fig. 2 shows the feeding device of a drilling machine, view A in FIG.

The drilling machine includes a guide post 1 with racks 2 and

• 3, mounted on the rack 1 carriage
• 4, on which there is a drill 5 with a ^{g of} drilling tool 6, the mechanism 7 thrust. On the carriage 4 there is a snapshot feed mechanism, which is made in the form of a two-arm lever 8 hinged on the carriage 4, with one of the arms of the lever 8 connected to the drive, which is made in the form of a power hydraulic cylinder 9. On each arm of the lever 8 are hinged _a ratchet pawl 10 and 11 to communicate with the racks 2 and 3. The housing of the hydraulic cylinder 9 is pivotally mounted on a bracket 12 mounted on the carriage 4, and the rod 13 of the hydraulic cylinder

• 9 is hinged on the lever 8, which

The second, in turn, is pivotally mounted on the carriage 4 by means of an axis 14, the axis 14 being located on the axis of symmetry of the guide post 1. The distance from the hinge mounting of the pawl

• 10 to the axis 14, equal to b (shoulder of the pawl 10), is greater than the distance from the hinged fastening of the pawl 11 to the axis 14 equal to 1 (the shoulder of the pawl 11). And the ratio of the length of the shoulder of the doggie 10 (1>) to the shoulder of the doggie 11 (1) should be proportional to the ratio of the piston area, equal to Р _п , to the piston area without

12 square stock 8.

pa 9. Ie

B = - in

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de rod hydraulic cylinder 9 will be constant. To take the dogs 10 and 11 out of engagement, they are equipped with handles 15. The dogs 10 and 11 are constantly pressed against the ratchet rails 2 and 3 by springs

_w power cylinder · when the condition

feed feeder

20

thirty

35

40

45

50

55

with forward and reverse hok

I

16. The carriage 4 moves freely along the guide post 1.

The feed works

The device is drilling in the following way.

. Machine with tanning at the drilling site. With the help of the mechanism 7 thrust, the machine divides between the soil and the roof of the excavation. After turning on the drill 5 from the oil station (not shown), fluid pressure is supplied, for example, to the piston cavity of the hydraulic cylinder 9. At the same time, the rod 13 of the hydraulic cylinder 9 extends and turns the lever 8 (figure 2). Since the doggie 11 is engaged with the ratchet rail 2, the carriage 4 with the drill 5 and the drilling tool 6 begins to move up (to the bottomhole), drilling and starting the drilling is performed. At the same time, the doggie 11 slides freely on the ratchet rail 3 under the action. At the end of the working stroke 9, the doggie 11 sinks down the rails 3 under the action of

Switching the hydraulic cylinder 9 (not shown) can be done either manually or automatically by one of the known methods, for example, electro-. hydraulically, hydraulically or mechanically. After switching the distributor (not shown), the pressurized fluid flows into the rod cavity of the hydraulic cylinder 9. At

feeding device usrychaga 8 up, hydraulic cylinders in the groove ratchet springs 16. Pe5 1543066

6

This rod 13 hydraulic cylinder'9 begins to move in the opposite direction (up) and with the help of the lever 8, the dog 12 and ratchet rail 3, the movement is transmitted to the carriage 4 with a drill 5, i.e. · 'And during the return stroke of the rod 13 of the hydraulic cylinder 9 is a working feed. At the same time, the dog 10 slides on the ratchet rail 2, rising. For-, θ, the cycle repeats.

To equalize the supply force of the drilling tool 6 during the forward and reverse stroke of the rod 13 of the hydraulic cylinder 9 (as during the reverse stroke, the force on the cylinder rod is less by an amount equal to the product of the rod area and pressure) shoulder (b) attaching the pawl 10 to the lever more than shoulder (1 ) fastening dog 11. During operation - 20

the piston cavity of the hydraulic cylinder 9 and the pawl 10, the carriage 4 moves a greater distance than during the return stroke, i.e. during operation of the rod section of the hydraulic piston 9 and the dog 11. 25

After drilling with the help of handles 15, dogs 10 and 11 are removed from engagement with rails 2 and 3 and carriage 4 with a drill 5 and drilling tool 6 is lowered to its original position. zo

Claims (2)

<claim-text> Formula of Invention </ claim-text> <ul style = "list-style: none;"> <li> <claim-text> 1. The feeding device of the drilling machine, which includes a guide post and a carriage mounted on it, as well as a storage skidder with a drive, the rails of which are fixed on the guide post, characterized in that, in order to shorten the drilling time, due to the exclusion of the idle of the ratchet mechanism, the latter is made in the form of a two-arm lever hinged on the carriage and carrying a ratchet dog on each shoulder, while one of the arms of the lever is connected to the drive, which is made in the form of a power cylinder, to rpus and the rod of which is pivotally connected to the carriage and the lever. </ claim-text> </ li> <li> 2. The device according to claim 1, of which is, in order to ensure the continuity of the feed force, the ratio of the distances from the ratchet attachment points on the lever to the lever attachment hinge on the carriage is proportional to the ratio of the piston area to the piston area without the square of the rod of the power cylinder. 1543066