Drilling dust removal hydraulic device for rock drill

Abstract

The utility model discloses a drilling dust removal hydraulic device for a rock drill, and relates to the technical field of rock drills. The wind driven generator comprises a machine head, a gear box, a middle body, a cylinder body, a handle body, an energy accumulator and a wind motor, the cylinder body is assembled at one end of the handle body, the middle body is assembled at one end of the cylinder body, the machine head is assembled at one end of the middle body, the gear box is assembled between the machine head and the middle body, and the energy accumulator is assembled on the cylinder body; in the utility model, by adopting the structure that the impact and the rotary drill rod are respectively independent, the impact energy and the rotating speed of the drill rod can be respectively adjusted according to ore rock conditions, the impact part adopts non-valve air distribution and can better utilize the expansion of compressed air to do work, and the rotary drill rod part is driven by a gear type wind motor and drives the drill rod to rotate through two-stage spur gear speed reduction; the gear type wind motor is arranged on the upper portion of the rock drill so as to shorten the total length of the rock drill and reduce the center height of the rock drill, and therefore the rock drill can be better suitable for operation in an underground narrow stope.

Description

TECHNICAL FIELD

[0001] The utility model relates to rock drill technology field, concretely is a drilling dust removal hydraulic device for rock drill. BACKGROUND

[0002] Rock drill is used to directly exploit stone material, it drills out blast hole on rock stratum, so that the explosive is put in to blast open rock, thereby completing exploitation stone material or other stone engineering, in addition, rock drill can also be used as breaker to break hard layer such as concrete, rock drill can be divided into four categories according to its power source, wind-driven rock drill, internal combustion rock drill, electric rock drill and hydraulic rock drill, wherein, wind-driven rock drill drives piston to impact forward in cylinder with compressed air, makes steel drill to hit rock, and is applied most widely;

[0003] However, wind-driven rock drill in prior art still has some defects:

[0004] The impact structure and the drill rotating structure of wind-driven rock drill in prior art are related to each other, the impact energy and the rotating speed of drill rod generated when working can not be adjusted respectively, and compressed air can not be fully used to do work, at the same time, the setting of impact mechanism and drill rotating structure can not shorten the total length of rock drill, so it is difficult to be applied to drilling operation in smaller space underground. UTILITY MODEL CONTENT

[0005] In order to solve the above problems, the utility model aims at providing a drilling dust removal hydraulic device for rock drill.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: a drilling dust removal hydraulic device for rock drill, the drilling dust removal hydraulic device comprises a machine head, a gear box, an intermediate body, a cylinder body, a handle body, an energy accumulator and a wind motor, the cylinder body is assembled at one end of the handle body, the intermediate body is assembled at one end of the cylinder body, the machine head is assembled at one end of the intermediate body, the gear box is assembled between the machine head and the intermediate body, the energy accumulator is assembled on the cylinder body, and the wind motor is assembled on one side of the gear box and is in transmission connection with the gear set in the gear box.

[0007] The inside of the handle body is provided with a handle body air chamber, the inside of the cylinder body is provided with a piston and a gas distribution rod, the piston is slidingly arranged in the cylinder body, and one end of the gas distribution rod is fixedly connected with one side of the piston.

[0008] The inside of the cylinder body is provided with a rear cavity air inlet, a cylinder rear cavity, a cylinder front cavity, a residual gas exhaust port and a front cavity air inlet, the rear cavity air inlet is in communication with the handle body air chamber, the residual gas exhaust port is arranged between the cylinder rear cavity and the cylinder front cavity and is in communication with the outside.

[0009] Preferably, the front cavity air inlet is equipped with a starting valve, and a hole is arranged in the front cavity air inlet, which is communicated with the rear cavity of the cylinder.

[0010] Preferably, the starting valve comprises a valve rod and a spring, and one end of the valve rod and one end of the spring are fixedly connected.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] In the utility model, the impact and the rotation of the drill rod are independent of each other, the impact energy and the rotation speed of the drill rod can be adjusted according to the mine rock conditions, the impact part adopts no cutting air distribution, the expansion work of the compressed air can be better utilized, the gear type air motor is arranged at the upper part of the rock drill to shorten the total length of the rock drill and reduce the center height of the rock drill, so that the rock drill can be better applied to the narrow mining field operation underground. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0014] Fig. 1 It is a whole structure schematic view of the drilling dust removal hydraulic device for the rock drill of the utility model.

[0015] Fig. 2 It is an internal structure schematic view of the drilling dust removal hydraulic device for the rock drill of the utility model.

[0016] In the drawing: 1, machine head;2, gear box;3, intermediate body;4, cylinder body;5, handle body;6, energy accumulator;7, air motor;11, drill tail;12, rotating sleeve;13, clamp sleeve;51, handle body air chamber;17, piston;18, air distribution rod;10, rear cavity air inlet;20, rear cavity of cylinder;30, front cavity of cylinder;40, residual air exhaust port;50, front cavity air inlet;60, starting valve;61, valve rod;62, spring;63, hole;71, gear;72, shaft gear. DETAILED DESCRIPTION

[0017] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work under the premise that the scope of the present application belongs to the protection range of the present application.

[0018] Embodiment: as shown in the utility model provides a drilling dust removal hydraulic device for rock drill, drilling dust removal hydraulic device includes head 1, gear box 2, intermediate body 3, cylinder body 4, handle body 5, energy accumulator 6 and wind motor 7, handle body 5 and wind motor 7 are all equipped with control valve, head 1 is equipped with drill tail 11, cylinder body 4 is assembled in one end of handle body 5, intermediate body 3 is assembled in one end of cylinder body 4, head 1 is assembled in one end of intermediate body 3, gear box 2 is assembled between head 1 and intermediate body 3, energy accumulator 6 is assembled on cylinder body 4, wind motor 7 is assembled in one side of gear box 2, and is transmission connection with gear set in gear box 2; Figs. 1-2

[0019] The inside of handle body 5 is provided with handle body air chamber 51, the inside of cylinder body 4 is provided with piston 17 and gas distribution rod 18, piston 17 is slidably arranged in cylinder body 4, one end of gas distribution rod 18 is fixedly connected with one side of piston 17.

[0020] The inside of cylinder body 4 is provided with rear cavity air inlet 10, cylinder rear cavity 20, cylinder front cavity 30, residual gas exhaust port 40 and front cavity air inlet 50, rear cavity air inlet 10 is communicated with handle body air chamber 51, residual gas exhaust port 40 is arranged between cylinder rear cavity 20 and cylinder front cavity 30, and is communicated with the outside.

[0021] Front cavity air inlet 50 is assembled with starting valve 60, hole 63 is arranged in front cavity air inlet 50, hole 63 is communicated with cylinder rear cavity 20, starting valve 60 includes valve rod 61 and spring 62, one end of valve rod 61 is fixedly connected with one end of spring 62.

[0022] Working principle: during the impact process:

[0023] When the control valve on handle body 5 is opened, compressed air enters handle body air chamber 51 through air pipe, and is alternately introduced into cylinder rear cavity 20 or cylinder front cavity 30 by gas distribution rod 18 at the tail of piston 17, to push piston 17 to make high-speed reciprocating motion, and continuously strike drill tail 11, to achieve the purpose of operation.

[0024] When piston 17 is located in cylinder rear cavity 20, compressed air enters cylinder rear cavity 20 through the neck of gas distribution rod 18 from rear cavity air inlet 10, to push piston 17 to move uniformly, at this time, cylinder front cavity 30 is communicated with the atmosphere, and residual gas in cylinder front cavity 30 is discharged to the atmosphere through residual gas exhaust port 40.​

[0025] When the piston 17 moves to the position between the rear chamber intake port 10 and the residual gas exhaust port 40, the front edge of the valve rod 18 closes the rear chamber intake port 10, stopping the intake of the compressed gas, and the compressed gas in the rear chamber 20 starts to expand and do work, pushing the piston 17 to continue moving forward;

[0026] The piston 17 continues to move forward, closing the residual gas exhaust port 40, and the front chamber 30 becomes a closed chamber, and the compressed gas in the front chamber 30 is compressed, at the same time, the compressed gas in the rear chamber 20 continues to expand and do work, pushing the piston 17 to move forward until the residual gas exhaust port 40 is opened;

[0027] When the piston 17 is about to open the residual gas exhaust port 40, the rear edge of the valve rod 18 opens the front chamber intake port 50, and the compressed gas enters the front chamber intake port 50. After the piston 17 opens the residual gas exhaust port 40, the rear chamber 20 is in communication with the atmosphere, and the residual gas is exhausted from the residual gas exhaust port 40 to the atmosphere. The piston 17 relies on inertia to overcome the resistance of the compressed gas in the front chamber 30 and slides forward to hit the drill tail 11, completing the stroke action;

[0028] During the return stroke of the piston 17:

[0029] After the piston 17 hits the drill tail 11, it accelerates to return due to the thrust of the compressed gas and the reaction force of the drill tail 11. The rear edge of the valve rod 18 closes the front chamber intake port 50, stopping the intake of the compressed gas, and the compressed gas in the front chamber 30 starts to expand;

[0030] The piston 17 continues to move backward, closing the residual gas exhaust port 40, and the rear chamber 20 becomes a closed chamber, and the compressed gas in the rear chamber 20 is compressed, and the compressed gas in the front chamber 30 continues to expand until the residual gas exhaust port 40 is opened;

[0031] The piston 17 moves backward, the front edge of the valve rod 18 opens the rear chamber intake port 10, and the compressed gas enters the rear chamber 20. The pressure in the rear chamber 20 rises rapidly, preventing the piston 17 from moving backward. At the same time, the piston 17 opens the residual gas exhaust port 40, and the residual gas in the front chamber 30 due to expansion escapes from the residual gas exhaust port 40. The piston 17 relies on inertia to overcome the resistance and moves backward at a speed that decreases rapidly. When the speed is zero, the return stroke is completed, and the stroke action of the next cycle begins;

[0032] If the piston 17 is at the dead center position (the dead center position and the position of the piston 17 at the residual gas exhaust port 40), at this time, the front chamber intake port 50, the rear chamber intake port 10 and the residual gas exhaust port 40 are all closed by the piston 17, and it cannot be started;

[0033] At the moment when the operating valve on the handle body 5 is opened, the compressed gas enters the rear chamber 20 through the hole 63, pushing the piston 17 to move forward away from the dead center position, completing the starting action;

[0034] Because the valve stem 61 of the starting valve 60 has different sizes of front and back end surfaces, a certain pressure difference is generated, so that the valve stem 61 is rapidly moved forward under the action of the pressure difference and overcomes the resistance of the spring 62 to close the hole 63, and when the impact is working normally, the hole 63 is in a closed state;

[0035] When the operating valve of the handle body 5 is closed and the impact is stopped, the pressure difference at both ends of the valve stem 61 disappears immediately, and the valve stem 61 is pushed back to the original position by the spring 62 to prepare for the next start;

[0036] In the rotary drill operation:

[0037] When the operating valve of the air motor 7 is opened, the compressed air is sent to the air motor 7 from one side of the air duct, and the other side of the air duct is communicated with the atmosphere, so that the compressed air generates a pressure difference on the gear 71 of the air motor 7, and the gear 71 of the air motor 7 rotates counterclockwise, and vice versa.

[0038] The gear 71 of the air motor 7 is a driving gear, and when the air motor 7 rotates, the rotating sleeve 12 is driven to rotate through the gear 71 and the shaft gear 72, and the rotating sleeve 12 drives the sleeve 13 to rotate through the end surface teeth, and the sleeve 13 drives the drill tail 11 to rotate through the flat hole and the flat tail of the drill tail 11.

[0039] Because the air motor 7 can rotate in two directions, the drill tail 11 can also rotate in two directions, which is convenient for the connection and disconnection of the drill rod of the drill tail 11.

[0040] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, and the mechanical parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0041] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technology, the present application also intends to include these modifications and variations.

Claims

1. A drilling dust removal hydraulic device for a rock drill, characterized in that, The drilling dust removal hydraulic device comprises a head (1), a gear box (2), an intermediate body (3), a cylinder body (4), a handle body (5), an accumulator (6) and a wind motor (7), the cylinder body (4) is assembled at one end of the handle body (5), the intermediate body (3) is assembled at one end of the cylinder body (4), the head (1) is assembled at one end of the intermediate body (3), the gear box (2) is assembled between the head (1) and the intermediate body (3), the accumulator (6) is assembled on the cylinder body (4), and the wind motor (7) is assembled on one side of the gear box (2) and is in transmission connection with a gear set in the gear box (2). An inner part of the handle body (5) is provided with a handle body air chamber (51), an inner part of the cylinder body (4) is provided with a piston (17) and a valve rod (18), the piston (17) is slidably arranged in the cylinder body (4), and one end of the valve rod (18) is fixedly connected with one side of the piston (17). An inner part of the cylinder body (4) is provided with a rear cavity air inlet (10), a cylinder rear cavity (20), a cylinder front cavity (30), a residual gas exhaust port (40) and a front cavity air inlet (50), the rear cavity air inlet (10) is in communication with the handle body air chamber (51), and the residual gas exhaust port (40) is arranged between the cylinder rear cavity (20) and the cylinder front cavity (30) and is in communication with the outside.

2. A drilling dust removal hydraulic device for a rock drill as claimed in claim 1, characterized in that, The front cavity air inlet (50) is assembled with a starting valve (60), and is provided with a hole (63), the hole (63) is in communication with the cylinder rear cavity (20).

3. A drilling dust removal hydraulic device for a rock drill as claimed in claim 2, characterized in that, The starting valve (60) comprises a valve rod (61) and a spring (62), and one end of the valve rod (61) is fixedly connected with one end of the spring (62).

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