CN211816549U

CN211816549U - Core of breaking hammer

Info

Publication number: CN211816549U
Application number: CN202020360195.1U
Authority: CN
Inventors: 赵东领
Original assignee: Yantai Sanyu Machinery Equipment Co Ltd
Current assignee: Yantai Sanyu Machinery Equipment Co Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-10-30
Anticipated expiration: 2030-03-20

Abstract

The utility model discloses a quartering hammer core, which comprises an upper cylinder body, wherein the top end of the upper cylinder body is provided with a sealing gasket, the top end of the sealing gasket is provided with a cylinder cover, a stepped cavity is arranged inside the upper cylinder body, a piston is arranged inside the stepped cavity, a plurality of oil ways are arranged on the side wall of the stepped cavity, the oil ways extend to the outer side surface of the upper cylinder body, the bottom end of the upper cylinder body is connected with a connecting cylinder, the bottom end of the connecting cylinder is provided with a lower cylinder body, a drill rod is arranged inside the lower cylinder body, the top of the drill rod is symmetrically provided with a limiting pin, and the; the circumference outside of connecting the jar is provided with the ring channel, connects the inside of jar and has seted up the cavity, and the lateral wall of cavity has seted up gas circuit and gas circuit intercommunication cavity and ring channel. Has the advantages that: the core of the breaking hammer is firmer in structure, and the impact force and the penetrating power of the core are increased compared with the traditional cylindrical drill rod, so that the breaking effect is better.

Description

Core of breaking hammer

Technical Field

The utility model relates to an engineering machine tool technical field particularly, relates to a quartering hammer core.

Background

The hydraulic breaking hammer is called as the breaking hammer or the breaker for short, the power source of the hydraulic breaking hammer is the pressure provided by an excavator, a loader or a pump station, and the hydraulic breaking hammer can effectively break stones and rocks in engineering construction and improve the working efficiency. The principle of selecting the hydraulic breaking hammer is to select the most suitable hydraulic breaking hammer according to the type of the excavator and the operation environment.

At present, the drill rod of traditional quartering hammer is generally a cylinder structure, broken rubble on road surface or rock, traditional drill rod is because its penetrating power of cylinder formula structure mainly concentrates the tip that shows at the circular cone, the cylinder body of rod and the area of contact of broken thing are big, cause the interior pressure of unit area little, therefore its penetrating power of cylinder drill rod is not enough, traditional quartering hammer core generally does not have dustproof mechanism in addition, the piece powder that leads to splashing when the quartering hammer work gets into the cylinder body, and then influence the lubricated effect of drill rod, traditional quartering hammer core's piston generally adopts nitrogen gas balancing unit in addition, gaseous compression ratio is great, show on the piston that it is that the piston is bigger at the inside displacement volume of nitrogen gas balancing unit, lead to traditional quartering hammer core load from this and be less.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the problem among the correlation technique, the utility model provides a quartering hammer core to overcome the above-mentioned technical problem that current correlation technique exists.

Therefore, the utility model discloses a specific technical scheme as follows:

a quartering hammer core comprises an upper cylinder body, wherein a sealing gasket is arranged at the top end of the upper cylinder body, a cylinder cover is arranged at the top end of the sealing gasket, a stepped cavity is arranged in the upper cylinder body, a piston is arranged in the stepped cavity, a plurality of oil ways are formed in the side wall of the stepped cavity and extend to the outer side face of the upper cylinder body, a connecting cylinder is connected to the bottom end of the upper cylinder body, a lower cylinder body is arranged at the bottom end of the connecting cylinder, a drill rod is arranged in the lower cylinder body, limiting pins are symmetrically arranged at the top of the drill rod, a dustproof mechanism wraps the outer side of the circumference of the bottom of the lower cylinder body, an upper oil seal; the circumference outside of connecting the jar is provided with the ring channel, connects the inside of jar and has seted up the cavity, and the gas circuit has been seted up to the lateral wall of cavity, and gas circuit intercommunication cavity and ring channel, and the one end that the cavity was kept away from to the gas circuit is provided with air check valve, is provided with the sound absorption piece in the ring channel.

Furthermore, in order to play a role in guiding and limiting, a first through hole is formed in the top end of the lower cylinder body, a plurality of counter bores are formed in the end face of the bottom end of the lower cylinder body in a surrounding mode of the first through hole, and internal threads are arranged on the side wall of the bottom of each counter bore.

Furthermore, in order to increase the impact force and the penetrating power of the quadrangular pyramid section in actual use compared with a traditional cylindrical drill rod and enable the crushing effect to be better, the drill rod comprises a first cylindrical section, a second cylindrical section is arranged at the bottom end of the first cylindrical section, key grooves are symmetrically formed in two sides of the top of the second cylindrical section, and the bottom end of the second cylindrical section is connected with the quadrangular pyramid section.

Furthermore, in order to make the dust-proof mechanism can effectually prevent that the piece powder that splashes when broken from entering into the cylinder body, lead to lubricated effect variation, influence the motion of drill rod, simultaneously because the dustproof pad is the rubber pad, can effectual absorption drill rod's reaction force when taking place the drill rod and empty the beating, in order to reduce the injury of drill rod to cylinder body and piston, and then play protection cylinder body and piston increase of service life's effect, dust-proof mechanism is including setting up the dust cover of fixing in the drill rod circumference outside, be provided with the dustproof pad between the bottom terminal surface of dust cover and lower cylinder body, the inboard bottom of dust cover is provided with a plurality of T shape guide pins, and T shape guide pin and dust cover threaded connection, dust-proof mechanism is still including setting up the stifled silk in the.

Furthermore, in order to reduce dust accumulation and further prevent dust from entering the cylinder body, the dustproof effect is improved, a second through hole is formed in the middle of the plug, and an inclined surface is arranged at the top end of the dustproof cover.

Further, in order when the piston moves to the top dead center, the hydraulic oil in the piston compression balance cavity, hydraulic oil extrusion gasbag reaches balance piston's purpose in order to absorb the kinetic energy of piston to reduce the impact of piston to the cylinder body, the ladder chamber includes balance cavity and the piston chamber that is located balance cavity bottom, and balance cavity's bilateral symmetry is provided with the gasbag.

The utility model has the advantages that:

(1) the utility model discloses a quartering hammer core structure is firmer, with the oil circuit integration on the cylinder body, has reduced there is the way process, makes the piston response faster, has carried efficiency, adopts the drill rod design of four pyramid formulas simultaneously, and more traditional cylinder formula drill rod has increased its impact force and penetrating power, makes crushing effect better.

(2) The tail end of the drill rod is of a rectangular pyramid structure, so that the impact force and the penetrating power of the rectangular pyramid section are increased compared with those of a traditional cylindrical drill rod in actual use, and the crushing effect is better.

(3) The balance cavity is matched with the air bag through the arrangement, so that when the piston moves to the top dead center, the piston compresses hydraulic oil in the balance cavity, the hydraulic oil extrudes the air bag to absorb the kinetic energy of the piston, the purpose of balancing the piston is achieved, the impact of the piston on the cylinder body is reduced, and meanwhile, the load of the core of the breaking hammer is increased.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a demolition hammer movement according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural view of a connecting cylinder of a demolition hammer movement according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a lower cylinder of a demolition hammer movement according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a drill rod of a demolition hammer movement according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a dust cover of a demolition hammer movement according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a stepped cavity of a demolition hammer movement according to an embodiment of the present disclosure.

In the figure:

1. a cylinder body; 2. a gasket; 3. a cylinder cover; 4. a stepped cavity; 401. a balancing chamber; 402. a piston cavity; 403. an air bag; 5. a piston; 6. an oil path; 7. a connecting cylinder; 701. an annular groove; 702. a cavity; 703. a gas circuit; 704. an air check valve; 705. a sound absorbing block; 8. a lower cylinder body; 801. a first through hole; 802. a counter bore; 803. an internal thread; 9. a drill rod; 901. a first cylindrical section; 902. a second cylindrical section; 903. a keyway; 904. a quadrangular pyramid section; 10. a spacing pin; 11. a dust-proof mechanism; 1101. a dust cover; 1102. a dust-proof pad; 1103. a T-shaped guide pin; 1104. plugging with a thread; 1105. a second through hole; 1106. an inclined surface; 12. oil seal is arranged; 13. and (6) lower oil seal.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a quartering hammer core.

The invention will now be further described with reference to the accompanying drawings and specific embodiments, as shown in figures 1-7, the breaking hammer movement according to the embodiment of the utility model comprises an upper cylinder body 1, a sealing gasket 2 is arranged at the top end of the upper cylinder body 1, a cylinder cover 3 is arranged at the top end of the sealing gasket 2, a step cavity 4 is arranged inside the upper cylinder body 1, a piston 5 is arranged inside the step cavity 4, a plurality of oil paths 6 are arranged on the side wall of the step cavity 4, the oil circuit 6 extends to the outer side surface of the upper cylinder body 1, the bottom end of the upper cylinder body 1 is connected with a connecting cylinder 7, the bottom end of the connecting cylinder 7 is provided with a lower cylinder body 8, the inside of the lower cylinder body 8 is provided with a drill rod 9, the top of the drill rod 9 is symmetrically provided with a limiting pin 10, the outer side of the bottom circumference of the lower cylinder body 8 is wrapped with a dustproof mechanism 11, an upper oil seal 12 is arranged at the top of the piston 5, and a lower oil seal 13 is arranged at the bottom of the piston 5; an annular groove 701 is formed in the outer side of the circumference of the connecting cylinder 7, a cavity 702 is formed in the connecting cylinder 7, an air path 703 is formed in the side wall of the cavity 702, the air path 703 is communicated with the cavity 702 and the annular groove 701, an air check valve 704 is arranged at one end, far away from the cavity 702, of the air path 703, and a sound absorption block 705 is arranged in the annular groove 701.

By means of the scheme, the structure of the core of the breaking hammer is firmer, the oil way is integrated on the cylinder body, the process of the oil way is reduced, the response of the piston is quicker, the efficiency is improved, meanwhile, the quadrangular pyramid drill rod design is adopted, the impact force and the penetrating power of the quadrangular pyramid drill rod are increased compared with the traditional cylindrical drill rod, and the breaking effect is better.

In one embodiment, the top end of the lower cylinder 8 is provided with a through hole 801, the bottom end face of the lower cylinder 8 is provided with a plurality of counter bores 802 surrounding the through hole 801, and the side walls of the bottoms of the counter bores 802 are provided with internal threads 803, so that the lower cylinder 8 provides a fixed support for the reciprocating motion of the drill rod 9, and the drill rod 9 can only move along the radial direction of the through hole 801 to play a role of guiding and limiting.

In one embodiment, the drill rod 9 comprises a first cylindrical section 901, a second cylindrical section 902 is arranged at the bottom end of the first cylindrical section 901, key grooves 903 are symmetrically arranged on two sides of the top of the second cylindrical section 902, a quadrangular pyramid section 904 is connected to the bottom end of the second cylindrical section 902, and the quadrangular pyramid section 904 is used as a crushing end of the drill rod, so that the contact area between the drill rod and a crushed object is reduced, the pressure in a unit area is increased, and the quadrangular pyramid section 904 is increased in impact force and penetrating force compared with a traditional cylindrical drill rod in actual use, and the crushing effect is better.

In one embodiment, the dust-proof mechanism 11 comprises a dust cover 1101 fixed on the outer side of the circumference of the drill rod 9, a dust-proof pad 1102 is arranged between the dust cover 1101 and the bottom end face of the lower cylinder 8, a plurality of T-shaped guide pins 1103 are arranged at the bottom of the inner side of the dust cover 1101, the T-shaped guide pins 1103 are in threaded connection with the dust cover 1101, the dust-proof mechanism 11 further comprises a plug 1104 arranged in a counter bore 802, and the dust-proof pad 1102 is a rubber pad, so that the dust-proof mechanism 11 can effectively prevent splashed debris powder from entering the cylinder during crushing, the lubricating effect is poor, and the movement of the drill rod 9 is affected.

In one embodiment, the through hole II 1105 is formed in the middle of the plug 1104, the inclined surface 1106 is formed in the top end of the dust cover 1101, and the dust cover 1101 is wrapped on the outer side of the circumference of the lower cylinder body 8, so that dust accumulation can be effectively reduced due to the existence of the inclined surface 1106, dust is further prevented from entering the cylinder body, and the dust prevention effect is improved.

In one embodiment, the stepped cavity 4 comprises a balance cavity 401 and a piston cavity 402 at the bottom end of the balance cavity 401, air bags 403 are symmetrically arranged on both sides of the balance cavity 401, and inert gas is filled in the air bags 403, so that when the piston 5 moves to the top dead center, the piston 5 compresses hydraulic oil in the balance cavity 401, and the hydraulic oil extrudes the air bags 403 to absorb the kinetic energy of the piston 5, thereby achieving the purpose of balancing the piston and reducing the impact of the piston on the cylinder.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In practical application, the oil path 6 is in butt joint with an inlet and an outlet of a control valve of an excavator or a hydraulic station so as to control the piston to reciprocate, when the piston 5 moves to an upper dead point, the piston 5 compresses hydraulic oil in the balance cavity 401, the hydraulic oil extrudes the air bag 403 to absorb kinetic energy of the piston 5 so as to achieve the purpose of balancing the piston, when the piston 5 descends to a lower dead point to impact the drill rod 9, compressed air in the cavity 702 is discharged from the air path 703, meanwhile, the sound absorption block can absorb vibration and noise generated when the piston 5 impacts the drill rod 9, when the drill rod 9 is in contact with a road surface or a broken object, the dust prevention mechanism 11 can effectively prevent scattered powder from entering the cylinder body during breaking, so that the lubricating effect is deteriorated and the movement of the drill rod 9 is influenced, and meanwhile, because the dust prevention pad 1102 is a rubber pad, the reaction force of the drill rod 9 can be effectively absorbed when the drill rod 9, to reduce the risk of damage to the cylinder and piston by the drill rod 9.

To sum up, with the help of the utility model discloses an above-mentioned technical scheme is rectangular pyramid structure through the end that sets up drill rod 9 to make quadrangular pyramid section 904 more traditional cylinder formula drill rod increase its impact force and penetrating power when in-service use, make crushing effect better. Through setting up balanced chamber 401 and gasbag 403 and cooperating to when piston 5 moved to the top dead center, hydraulic oil in balanced chamber 401 was compressed to piston 5, and hydraulic oil extrusion gasbag 403 is in order to absorb piston 5's kinetic energy, reaches the purpose of balanced piston, in order to reduce the impact of piston to the cylinder body. Therefore, the structure of the core of the breaking hammer is firmer, the oil way is integrated on the cylinder body, the process of the oil way is reduced, the response of the piston is quicker, the efficiency is improved, and meanwhile, the design of the quadrangular pyramid drill rod is adopted, so that the impact force and the penetrating power of the breaking hammer are increased compared with the traditional cylindrical drill rod, and the breaking effect is better.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The breaking hammer core is characterized by comprising an upper cylinder body (1), wherein a sealing gasket (2) is arranged at the top end of the upper cylinder body (1), a cylinder cover (3) is arranged at the top end of the sealing gasket (2), a step cavity (4) is arranged inside the upper cylinder body (1), a piston (5) is arranged inside the step cavity (4), a plurality of oil ways (6) are formed in the side wall of the step cavity (4), the oil ways (6) extend to the outer side face of the upper cylinder body (1), the bottom end of the upper cylinder body (1) is connected with a connecting cylinder (7), a lower cylinder body (8) is arranged at the bottom end of the connecting cylinder (7), a drill rod (9) is arranged inside the lower cylinder body (8), limiting pins (10) are symmetrically arranged at the top of the drill rod (9), and a dustproof mechanism (11) is wrapped outside the bottom circumference of the lower cylinder body (8), an upper oil seal (12) is arranged at the top of the piston (5), and a lower oil seal (13) is arranged at the bottom of the piston (5);

the air suction type air cylinder is characterized in that an annular groove (701) is formed in the outer side of the circumference of the connecting cylinder (7), a cavity (702) is formed in the connecting cylinder (7), an air path (703) is formed in the side wall of the cavity (702), the air path (703) is communicated with the cavity (702) and the annular groove (701), an air check valve (704) is arranged at one end, far away from the cavity (702), of the air path (703), and a sound suction block (705) is arranged in the annular groove (701).

2. The breaking hammer movement according to claim 1, wherein a first through hole (801) is formed in the top end of the lower cylinder body (8), a plurality of counter bores (802) are formed in the end face of the bottom end of the lower cylinder body (8) and surround the first through hole (801), and internal threads (803) are formed in the side wall of the bottom of each counter bore (802).

3. The breaking hammer movement according to claim 1, wherein the drill rod (9) comprises a first cylindrical section (901), a second cylindrical section (902) is arranged at the bottom end of the first cylindrical section (901), key grooves (903) are symmetrically arranged on two sides of the top of the second cylindrical section (902), and a quadrangular pyramid section (904) is connected to the bottom end of the second cylindrical section (902).

4. A demolition hammer cartridge according to claim 2, wherein the dust-proof mechanism (11) comprises a dust-proof cover (1101) fixed to the outside of the circumference of the drill rod (9), a dust-proof pad (1102) is arranged between the dust-proof cover (1101) and the bottom end face of the lower cylinder (8), a plurality of T-shaped guide pins (1103) are arranged at the bottom inside the dust-proof cover (1101), the T-shaped guide pins (1103) are in threaded connection with the dust-proof cover (1101), and the dust-proof mechanism (11) further comprises a plug (1104) arranged in the counter bore (802).

5. A demolition hammer movement according to claim 4, characterized in that a second through hole (1105) is provided in the middle of the plug (1104), and an inclined surface (1106) is provided at the top end of the dust cover (1101).

6. A breaking hammer movement according to claim 1, characterized in that the stepped cavity (4) comprises a balance cavity (401) and a piston cavity (402) at the bottom end of the balance cavity (401), and air bags (403) are symmetrically arranged on both sides of the balance cavity (401).