CN212105721U

CN212105721U - Impacter and piston assembly thereof

Info

Publication number: CN212105721U
Application number: CN202020559329.2U
Authority: CN
Inventors: 沈国华
Original assignee: Zhejiang Planka Brazing Tool Co ltd
Current assignee: Zhejiang Planka Brazing Tool Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-12-08
Anticipated expiration: 2030-04-15

Abstract

The utility model discloses a piston assembly of impacter, relate to drilling equipment technical field, it includes the cylinder body, piston and gas distribution seat, slope gas pocket and air supply hole have been seted up along axial lateral wall to the cylinder body, slope gas pocket and air supply hole are close to cylinder body axial both ends setting respectively, the gas distribution seat includes pedestal and gas distribution pole, the pedestal is connected and the shutoff is equipped with the one end setting of slope gas pocket in the cylinder body, pedestal and cylinder body concatenation form the piston chamber, and the pedestal separates the setting with the piston chamber with the slope gas pocket, set up the inlet port on the pedestal, the venthole with the inlet port intercommunication, the venthole sets up with slope gas pocket intercommunication, central gas pocket has been seted up along the axial in the piston, the diameter of central gas pocket is 19.2-19.7 mm. Through reducing the diameter of the central air hole, the gas consumption is reduced when the slag discharge condition is in a state, so that the gas waste is reduced, and the whole use is more energy-saving.

Description

Impacter and piston assembly thereof

Technical Field

The utility model relates to a drilling equipment technical field, more specifically say, it relates to an impacter and piston assembly thereof.

Background

The impactor is a hole bottom power tool which takes compressed air as a power medium and generates continuous impact load by using energy of the compressed air. The compressed air can also be used as a hole washing medium.

For example, the patent is a Chinese patent with the patent number of CN104265159B, the patent discloses a down-the-hole impactor, which comprises an impactor main body, wherein the rear part of the impactor main body is provided with a rear joint, the front part of the impactor main body is provided with a front joint, a hollow pore channel is formed in the rear joint, a drill bit is connected with the front joint, a drill bit central hole is formed in the drill bit, the drill bit central hole is communicated with an end surface inclined hole of the drill bit, a check valve is arranged at the outlet of the hollow pore channel in the impactor main body, a gas distribution rod and a check valve seat in the impactor main body are of an integrated structure, and the gas distribution rod and the check valve seat in the impactor main body realize; the piston is arranged in the inner cylinder and moves in the inner cylinder and the outer sleeve; the front part of the piston is guided by a guide sleeve, the front end of the piston is matched with the drill bit, and a central air hole in the piston is communicated with a central hole of the drill bit. The diameter of the central air hole in the existing piston is generally 22 mm.

When the impactor is adopted, when the piston is in an extending state, compressed air enters the central hole of the drill bit through the central air hole of the piston to discharge slag and clear the hole, and at the moment, the air consumption is easy to be overlarge, so that energy waste is caused, and the impactor is troublesome and needs to be improved.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides an impacter and piston assembly thereof, it has more energy-conserving advantage.

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

the utility model provides an impacter and piston assembly thereof, includes cylinder body, piston and distribution seat, slope gas pocket and air supply hole have been seted up along axial lateral wall to the cylinder body, slope gas pocket and air supply hole are close to cylinder body axial both ends setting respectively, the distribution seat includes pedestal and distribution pole, the pedestal is connected and the shutoff is equipped with the one end setting of slope gas pocket in the cylinder body, pedestal and cylinder body concatenation form the piston chamber, just the pedestal separates piston chamber and slope gas pocket and sets up, set up the inlet port on the pedestal, with the venthole of inlet port intercommunication, venthole and slope gas pocket intercommunication set up, central gas pocket has been seted up along the axial in the piston, the diameter of central gas pocket is 19.2-19.7 mm.

Through the technical scheme, according to actual tests, the diameter of the central air hole is too small, the slag discharging effect is insufficient, and when the diameter of the central air hole is controlled to be 19.2-19.7mm, the slag discharging effect can be ensured, and the air consumption can be saved. The diameter of the central air hole is reduced, so that the gas consumption is reduced when the slag is discharged, the gas waste is reduced, and the whole use is more energy-saving.

The present invention may be further configured in a preferred embodiment as: the piston is close to the one end of distributing gas pole and has seted up the adaptation groove with distributing gas pole complex, the adaptation groove sets up with central gas pocket is coaxial, just the diameter in adaptation groove is 20 mm.

Through above-mentioned technical scheme, the diameter of original adaptation groove is 25mm usually, now adjusts the adaptation groove diameter to 20mm, has further reduced the air flow in adaptation groove, and the size adjustment of cooperation center gas pocket for the gas consumption when the sediment is arranged to the clear hole reduces, thereby makes holistic use more energy-conserving.

The present invention may be further configured in a preferred embodiment as: the piston includes in proper order along the axial with piston chamber complex portion of sliding, connecting portion and with the big tip of impacter main part inside wall complex, the diameter of connecting portion is less than the portion of sliding and big tip sets up and is formed with the annular.

Through above-mentioned technical scheme, set up the annular, through the annular setting with the one end of sliding part along axial length reduction, with the air duct grow simultaneously, when the air supply promoted the piston and stretches out, make the circulation of air supply more smooth and easy, also reduced the friction surface of sliding part and cylinder body inside wall simultaneously, reduced the energy of the friction loss of sliding part and cylinder body inside wall, make holistic use more energy-conserving.

The present invention may be further configured in a preferred embodiment as: two groups of air supply holes are distributed along the axial direction.

Through above-mentioned technical scheme, the air supply hole distributes two sets ofly, and every group air supply hole all is circumference evenly distributed along the cylinder body. When the piston stretches out, the portion of sliding blocks a set of gas supply hole of keeping away from the gas distribution seat, and the gas of air supply enters into the piston intracavity and gets into the central gas pocket of piston through a set of gas supply hole that is close to the gas distribution seat this moment and carries out row sediment clear hole, and when the piston was in the state of retracting, the portion of sliding corresponds and blocks a set of gas supply hole of being close to the gas distribution seat, and the gas of air supply entered into the piston outer wall through a set of gas supply hole of keeping away from the gas distribution seat this moment to promote the piston and stretch out. The two groups of air supply holes are arranged, so that the reciprocating stroke of the piston is shortened, the friction surface between the cylinder body and the piston sliding part is reduced, and the energy of the friction loss between the sliding part and the inner side wall of the cylinder body is reduced, so that the whole use is more energy-saving.

The present invention may be further configured in a preferred embodiment as: and one end of the piston, which is close to the gas distribution seat, is also provided with a capacity expansion groove.

Through the technical scheme, set up the dilatation groove, when making the piston with the shutoff of piston chamber through setting up of dilatation groove, the airtight space grow of piston intracavity to make behind the piston compression airtight space stronger to the explosive force that the piston stretches out, make the chisel attack explosive force of impacter stronger, thereby make the efficiency of impacter higher, to the hole of the same degree of depth, reduced the operating time of impacter, thereby further reach energy-conserving effect.

The present invention may be further configured in a preferred embodiment as: the expansion groove is communicated with the adaptation groove, the expansion groove is arranged in a spherical groove mode, the spherical center of the expansion groove is arranged on the axis of the adaptation groove, and the gas distribution rod extends the depth of at least one expansion groove.

Through above-mentioned technical scheme, through dilatation groove and adaptation groove intercommunication for the dilatation groove can be as big as possible the setting, thereby makes confined space bigger, thereby helps improving the chisel attack explosive power of impacter.

The present invention may be further configured in a preferred embodiment as: the expansion groove and the adaptation groove are in arc transition arrangement.

Through the technical scheme, the adapter rod is guided into the adapter groove more conveniently and accurately, and the whole use is more stable.

An impactor including a piston assembly as defined in any preceding claim.

Through the technical scheme, the impactor is more energy-saving in actual use.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the diameter of the central air hole is reduced, so that the gas consumption is reduced in the state of deslagging, the gas waste is reduced, and the integral use is more energy-saving;

(2) by arranging the annular groove, the energy of friction loss between the sliding part and the inner side wall of the cylinder body is reduced, so that the whole use is more energy-saving;

(3) through seting up the dilatation groove for the chisel attack explosive force of impacter is stronger, thereby makes the efficiency of impacter higher, to the hole of the same degree of depth, has reduced the operating time of impacter, thereby further reaches energy-conserving effect.

Drawings

FIG. 1 is a general schematic view of a first embodiment;

FIG. 2 is a schematic diagram of a valve seat according to the first embodiment;

FIG. 3 is a schematic view of the piston according to the first embodiment in an extended state;

FIG. 4 is a schematic sectional view of the piston structure according to the first embodiment;

fig. 5 is a schematic view of the piston in the retracted state according to the first embodiment.

Reference numerals: 1. a cylinder body; 2. a piston; 21. a sliding part; 22. a connecting portion; 23. a large end portion; 3. a gas distribution base; 31. a base body; 32. a gas distribution rod; 4. inclining the air hole; 5. an air supply hole; 6. an air inlet; 7. an air outlet; 8. a ring groove; 9. a central air hole; 10. an adaptation groove; 11. a capacity expansion slot.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

The first embodiment is as follows:

a piston assembly of an impactor is shown in figure 1 and comprises a cylinder body 1, a piston 2 and an air distribution seat 3. The cylinder body 1 is in a round tube shape, the cylinder body 1 is provided with an inclined air hole 4 and an air supply hole 5 along the axial outer side wall, and the inclined air hole 4 and the air supply hole 5 are respectively arranged close to the two axial ends of the cylinder body 1. The inclined air holes 4 are distributed along the circumferential direction of the cylinder body 1 in a plurality, and the air supply holes 5 are distributed along the axial direction in two groups. Each group of air supply holes 5 is distributed with a plurality of hole positions along the circumferential direction of the cylinder body 1.

As shown in fig. 2 and 3, the air distribution seat 3 includes a seat body 31 and an air distribution rod 32. The seat body 31 is connected and sealed at one end of the cylinder body 1 provided with the inclined air hole 4, the seat body 31 and the cylinder body 1 are spliced to form a piston cavity, and the piston cavity and the inclined air hole 4 are separated by the seat body 31. A plurality of air inlets 6 are opened at one end of the seat body 31 far away from the air supply hole 5, the air inlets 6 are arranged in circular holes and are circumferentially and uniformly distributed along the axis of the seat body 31. The lateral wall of pedestal 31 has still seted up venthole 7, and venthole 7 is the annular groove setting along the lateral wall of pedestal 31, and venthole 7 communicates with inlet port 6 and sets up with a plurality of slope gas pocket 4 intercommunication.

As shown in fig. 3 and 4, the piston 2 is rod-shaped as a whole, and the piston 2 includes a sliding portion 21 engaged with the piston cavity, a connecting portion 22, and a large end portion 23 engaged with the inner side wall of the impactor body in this order along the axial direction. The sliding portion 21, the connecting portion 22 and the large end portion 23 are integrally provided, and the length of the sliding portion 21 in the axial direction is 48 mm. The connecting portion 22 is smaller in diameter than the slip portion 21 and the large end portion 23, and is provided with the ring groove 8. The piston 2 is internally provided with a central air hole 9 along the axial direction, the diameter of the central air hole 9 is 19.2-19.7mm, and in the embodiment, the diameter of the central air hole 9 is 19.7 mm. An adaptation groove 10 is formed in one end, close to the gas distribution rod 32, of the piston 2, the adaptation groove 10 is coaxially arranged with the central air hole 9, and the diameter of the adaptation groove 10 is 20 mm. The diameter of the gas distribution rod 32 is matched with the adaptation groove 10, and when the gas distribution rod 32 penetrates into the adaptation groove 10, the gas distribution rod 32 seals the adaptation groove 10, so that a closed space is formed in the piston cavity.

The piston 2 is close to the one end of gas distribution seat 3 and has still seted up dilatation groove 11, and dilatation groove 11 and adaptation groove 10 intercommunication are just being the circular arc transition setting between dilatation groove 11 and the adaptation groove 10. The capacity expansion groove 11 is a spherical groove, the spherical center of the capacity expansion groove 11 is arranged on the axis of the adaptive groove 10, and the gas distribution rod 32 lengthens the depth of at least one capacity expansion groove 11.

The working principle of the embodiment is as follows:

referring to fig. 3 and 5, when the piston 2 is extended, the sliding part 21 blocks the group of gas supply holes 5 far away from the gas distribution base 3, and gas of a gas source enters the piston cavity through the group of gas supply holes 5 near the gas distribution base 3 and enters the central gas hole 9 of the piston 2 for deslagging and hole cleaning. When the piston 2 is in retraction, the gas distribution rod 32 is correspondingly inserted into the adapting groove 10, meanwhile, the sliding part 21 seals a group of gas supply holes 5 close to the gas distribution seat 3, at this time, under the inertia effect, the piston 2 continues to retract, and at this time, the piston 2 compresses the closed space in the piston cavity. When the piston 2 retracts to the dead point, the compressed pressure of the closed space is released to push the piston 2 out, meanwhile, air of an air source enters the outer wall of the piston 2 through a group of air supply holes 5 far away from the air distribution seat 3 to further push the piston 2 to extend out, and the piston 2 is pushed out by the cooperation of the air supply holes and the air supply holes.

Example two:

an impactor comprising an impactor body (not shown) with a rear fitting (not shown) at the rear and a front fitting (not shown) at the front, a hollow bore (not shown) in the rear fitting, and a drill bit (not shown) connected to the front fitting. In practice, the drill bit is usually a drill bit, and a central drill bit hole (not shown) is formed in the drill bit and is communicated with the end face inclined hole of the drill bit. The piston assembly in the first embodiment is further arranged in the impactor body and is used for driving the drill bit to chisel through an air source. A check valve (not shown) is arranged at the outlet of the hollow pore passage in the impactor body and is used for plugging one end, close to the rear joint, of the gas distribution seat 3 so as to limit the condition that gas of a gas source directly enters the piston cavity through the gas distribution seat 3.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a piston assembly of impacter, includes cylinder body (1), piston (2) and air distribution seat (3), slope gas pocket (4) and air feed hole (5) have been seted up along axial lateral wall in cylinder body (1), slope gas pocket (4) and air feed hole (5) are close to cylinder body (1) axial both ends setting, its characterized in that respectively: the gas distribution seat (3) comprises a seat body (31) and a gas distribution rod (32), the seat body (31) is connected with and sealed at one end of the cylinder body (1) provided with an inclined gas hole (4), the seat body (31) and the cylinder body (1) are spliced to form a piston cavity, the seat body (31) separates the piston cavity from the inclined gas hole (4), the seat body (31) is provided with an air inlet hole (6) and an air outlet hole (7) communicated with the air inlet hole (6), the air outlet hole (7) is communicated with the inclined gas hole (4), the piston (2) is internally provided with a central gas hole (9) along the axial direction, and the diameter of the central gas hole (9) is 19.2-19.7 mm.

2. The piston assembly of an impactor according to claim 1, wherein: piston (2) are close to the one end of joining in marriage gas pole (32) and seted up with joining in marriage gas pole (32) complex adaptation groove (10), adaptation groove (10) and central gas pocket (9) coaxial setting, just the diameter in adaptation groove (10) is 20 mm.

3. The piston assembly of an impactor according to claim 1, wherein: piston (2) along the axial include in proper order with piston chamber complex slide portion (21), connecting portion (22) and with big tip (23) of impacter main part inside wall complex, the diameter of connecting portion (22) is less than slide portion (21) and big tip (23) setting and is formed with annular (8).

4. The piston assembly of an impactor according to claim 3, wherein: two groups of air supply holes (5) are distributed along the axial direction.

5. The piston assembly of an impactor according to claim 2, wherein: an expansion groove (11) is further formed in one end, close to the gas distribution seat (3), of the piston (2).

6. The piston assembly of an impactor according to claim 5, wherein: the expansion groove (11) is communicated with the adaptation groove (10), the expansion groove (11) is a spherical groove, the spherical center of the expansion groove (11) is located on the axis of the adaptation groove (10), and the gas distribution rod (32) is lengthened by the depth of at least one expansion groove (11).

7. The piston assembly of an impactor according to claim 6, wherein: the expansion groove (11) and the adaptation groove (10) are arranged in a circular arc transition mode.

8. An impactor, comprising: comprising a piston assembly according to any one of claims 1 to 7.