CN217760978U

CN217760978U - Coal mining machine vibration prevention device

Info

Publication number: CN217760978U
Application number: CN202221739706.6U
Authority: CN
Inventors: 罗刚; 高永茂
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-11-08
Anticipated expiration: 2032-07-07

Abstract

The utility model relates to a coal mining equipment field, concretely relates to coal-winning machine device that keeps away and shakes, comprising a cylinder body, the symmetrical fixed mounting in the cylinder body outside has the buffering jar, the inside sliding connection of buffering jar has a sealing plug No. one, threaded bush is installed in the embedding of cylinder body upper end surface activity, the inside threaded bush lower extreme fixed surface that is located of cylinder body installs the sealing plug No. two, the inside movable mounting of threaded bush has the lead screw, lead screw upper end movable mounting has No. two connecting seats, the bearing is installed in the embedding of No. two inside upper surface fixed surfaces of connecting seat. The utility model discloses in, can increase the protection to the pneumatic cylinder, share the gravity of rocking arm effect on the pneumatic cylinder, and reduce the vibration that the rocking arm transmitted the pneumatic cylinder, slow down the wearing and tearing between pneumatic cylinder piston rod and the sealing member, keep the supporting effect of pneumatic cylinder, and the pneumatic cylinder is when damaging suddenly, and protective structure can play interim supporting role to the rocking arm, avoids the rocking arm to rock under the rotation of blade disc, keeps the stability of rocking arm.

Description

Vibration-preventing device of coal mining machine

Technical Field

The utility model relates to a coal mining equipment field, concretely relates to coal-winning machine keeps away device that shakes.

Background

The coal mining machine is one of main equipment of fully-mechanized coal mining complete equipment, is developed and evolved from a coal cutter, is a large-scale complex system integrating machinery, electricity and hydraulic pressure, has severe working environment, can cause the interruption of the whole coal mining work if a fault occurs, and causes huge economic loss, and is one of important equipment for realizing the mechanization and the modernization of coal mine production.

The notice number is; CN212927846U, the "a coal mining machine is with device that keeps away shakes of publishing, including coal-winning machine main part and shock absorber, the inner chamber bottom of shock absorber is provided with the third spring, the top of third spring is provided with the piston, the spout has all been seted up to the inner chamber left and right sides inner wall of shock absorber, the top inner wall of spout is provided with the fourth spring, the bottom of fourth spring is provided with the fixing base, the jack has been seted up on the inboard surface of fixing base, it has relief valve, fixed establishment to peg graft in the left side bottom of shock absorber, fixed establishment set up in the top of piston, and the top is provided with the bracing piece, still includes air inlet mechanism, air inlet mechanism peg graft in the right side bottom of shock absorber. The device can effectively improve the shock-proof effect of the coal mining machine during coal mining, avoid the stability of the machine body from being influenced by vibration, prolong the service life of the coal mining machine equipment and better meet the actual use requirements.

When using, keep away the effect of shaking through the spring realization, but current coal-winning machine rocking arm supports and angle modulation through the pneumatic cylinder, along with the extension angle change of rocking arm, the third spring also can be along with flexible, the spring loses efficacy gradually, it descends fast to keep away the effect of shaking, the action of gravity of rocking arm is on the pneumatic cylinder, the vibration that the rocking arm during operation produced also can be acted on the pneumatic cylinder, the pneumatic cylinder is when experiencing vibrations, can accelerate wearing and tearing between piston rod and the sealing member, the supporting effect who leads to the pneumatic cylinder reduces, can not protect the pneumatic cylinder, and the pneumatic cylinder is when the sudden damage, the rocking arm loses the support, rock under the rotation of blade disc, can not play interim supporting role to the rocking arm when the pneumatic cylinder damages.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problems, the utility model aims to provide a coal mining machine vibration-avoiding device, through the rotation of a motor and the transmission of a worm and a worm wheel, a screw rod is rotated, the distance between two connecting seats is changed along with the expansion of a hydraulic cylinder, under the gravity action of a rocker arm, a threaded sleeve slides in a cylinder body, a second sealing plug moves downwards, the pressure intensity in the space communicated with a buffer cylinder is increased at the moment, a first sealing plug moves upwards by jacking, when the pressure intensity above the first sealing plug in the buffer cylinder and the pressure intensity at the communication part of the cylinder body and the buffer cylinder are both at a certain value, the screw thread sleeve pipe is fixed, play supporting role to the rocking arm, thereby can increase the protection to the pneumatic cylinder, share the gravity of rocking arm effect on the pneumatic cylinder, slight removal through the screw thread sleeve pipe falls, the vibrations of pneumatic cylinder are transmitted to low rocking arm, slow down the wearing and tearing between pneumatic cylinder piston rod and the sealing member, the supporting effect who keeps the pneumatic cylinder, and the pneumatic cylinder is when the sudden damage, the power that the screw thread sleeve pipe received increases, it is fixed to carry out the short-range slip after-fixing, play interim supporting role to the rocking arm, avoid the rocking arm to rock under the rotation of blade disc, keep the stability of rocking arm.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a coal-winning machine keeps away device that shakes, includes the cylinder body, cylinder body outside symmetry fixed mounting has the cushion cylinder, the inside sliding connection of cushion cylinder has a sealing plug, threaded sleeve is installed in the embedding of cylinder body upper end surface activity, the inside threaded sleeve lower extreme fixed surface of being located of cylinder body installs the sealing plug No. two, the inside movable mounting of threaded sleeve has the lead screw, lead screw upper end movable mounting has the connecting seat No. two, the bearing is installed in the embedding of the inside surface fixation of connecting seat No. two, no. two connecting seat one side fixed mounting has the motor, the lead screw outside is surperficial upper end department fixed mounting has the worm wheel, worm wheel one side meshing is connected with the worm, threaded sleeve is oval cylindricality.

Further, the method comprises the following steps: the cylinder body outside surface upper end and the equal fixed embedding of lower extreme department install the valve No. one, cylinder body lower extreme fixed surface installs the connecting seat No. one, through the valve, toward the inside pump compressed gas of cylinder body.

The method is further characterized in that: the utility model discloses a damping cylinder, including cylinder body, cylinder body outside fixed surface installs the mount, the buffering jar passes through mount and cylinder body fixed connection, the trachea is installed to the fixed embedding of cylinder body outside fixed surface lower extreme department symmetry, makes cylinder body and buffering jar intercommunication through the trachea.

The method is further characterized in that: the utility model discloses a buffer cylinder, including buffer cylinder, trachea, no. two valves are installed to buffer cylinder outside fixed embedding of surface department in the surface, and through No. two valves, go into compressed gas toward the inside pump of buffer cylinder.

Further, the method comprises the following steps: the inside fixed surface of cylinder body installs the spacing ring No. one, the inside activity of cylinder body is equipped with reset spring No. one, a reset spring both ends respectively with No. two sealing plug lower surfaces and cylinder body fixed connection, the displacement of No. two sealing plugs of spacing ring restriction, an ascending power of reset spring for No. two sealing plugs makes it reset fast.

The method is further characterized in that: the inside fixed surface of buffer cylinder installs No. two spacing rings, the inside activity of buffer cylinder is equipped with No. two reset spring, no. two reset spring both ends respectively with a sealing plug upper surface and buffer cylinder fixed connection, the displacement of a sealing plug of No. two spacing ring restrictions, and No. two reset spring give a downward power of sealing plug, make its quick return.

The method is further characterized in that: the two ends of the worm are rotatably connected with the second connecting seat, the two ends of the worm respectively penetrate through the surfaces of the two sides of the second connecting seat, clamping rings are symmetrically and fixedly mounted on the surface of the outer side of the worm, the upper end of the screw rod is fixedly connected with the inner ring of the bearing, a supporting plate is fixedly mounted on the surface of the outer side of the motor, one end of the supporting plate is fixedly connected with the second connecting seat, the output end of the motor is fixedly connected with one end of the worm, the motor rotates, the screw rod is driven to rotate through the transmission of the worm and the worm wheel, the screw rod is pushed out of the threaded sleeve, otherwise, the hydraulic cylinder contracts, the motor rotates reversely, the screw rod is retracted into the threaded sleeve, and accordingly the distance between the two connecting seats changes along with the expansion of the hydraulic cylinder, and the rocker arm is supported.

The utility model has the advantages that:

the distance between the two connecting seats is changed along with the expansion and contraction of the hydraulic cylinder, the threaded sleeve slides in the cylinder body under the action of the gravity of the rocker arm, the second sealing plug moves downwards, the pressure in the space where the cylinder body is communicated with the buffer cylinder is increased at the moment, the first sealing plug is pushed to move upwards, the first return spring gives an upward force to the first sealing plug, the second return spring gives a downward force to the first sealing plug, the first sealing plug and the second sealing plug can be quickly reset, when the pressure above the first sealing plug in the buffer cylinder and the pressure at the communication position of the cylinder body and the buffer cylinder are both at a certain value, the threaded sleeve is fixed to support the rocker arm, so that the protection cutter head on the hydraulic cylinder can be increased, the gravity acting on the hydraulic cylinder is shared, the rocker arm slightly moves to reduce, the vibration transmitted to the hydraulic cylinder by the rocker arm, the abrasion between the piston rod and the sealing element is reduced, the supporting effect of the hydraulic cylinder is maintained, and when the hydraulic cylinder is suddenly damaged, the force on the threaded sleeve is increased, the cutter head is fixed after sliding in a small range, the rocker arm is slightly moves to support effect, and the temporary swinging of the rocker arm is avoided, and the rocking stability of the rocker arm is kept.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall split structure of the present invention;

FIG. 3 is a schematic sectional view of the cylinder body and the cushion cylinder of the present invention;

FIG. 4 is a schematic sectional view of the threaded sleeve and the second connecting seat of the present invention;

fig. 5 is a schematic view of the cross-sectional structure of the screw rod and the second connecting seat of the present invention.

In the figure: 1. a cylinder body; 101. a first valve; 102. a first connecting seat; 103. an air tube; 104. a first limit ring; 105. a first return spring; 2. a cushion cylinder; 201. a second valve; 202. a fixed mount; 203. air holes; 204. a first sealing plug; 205. a second limit ring; 206. a second return spring; 3. a threaded bushing; 301. a screw rod; 302. a bearing; 303. a second connecting seat; 304. a worm gear; 305. a second sealing plug; 4. a motor; 401. a support plate; 402. a worm; 403. and (4) clamping a ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, a coal mining machine vibration avoiding device comprises a cylinder body 1, buffer cylinders 2 are symmetrically and fixedly mounted on the outer side of the cylinder body 1, a first sealing plug 204 is connected to the inner portion of the buffer cylinder 2 in a sliding manner, a threaded sleeve 3 is mounted on the surface of the upper end of the cylinder body 1 in an embedded manner, a second sealing plug 305 is fixedly mounted on the surface of the lower end of the threaded sleeve 3 in the cylinder body 1, a lead screw 301 is movably mounted in the threaded sleeve 3, a second connecting seat 303 is movably mounted on the upper end of the lead screw 301, a bearing 302 is fixedly mounted on the upper surface of the inner portion of the second connecting seat 303 in an embedded manner, a motor 4 is fixedly mounted on one side of the second connecting seat 303, a worm wheel 304 is fixedly mounted on the upper end of the outer side of the lead screw 301, a worm 402 is engaged with a worm 402, and the threaded sleeve 3 is in an elliptic cylindrical shape.

The upper end and the lower end of the outer side surface of the cylinder body 1 are fixedly embedded with a first valve 101, the lower end surface of the cylinder body 1 is fixedly provided with a first connecting seat 102, and compressed gas is pumped into the cylinder body 1 through the first valve 101; the outer side surface of the cylinder body 1 is fixedly provided with a fixing frame 202, the buffer cylinder 2 is fixedly connected with the cylinder body 1 through the fixing frame 202, the lower end of the outer side surface of the cylinder body 1 is symmetrically and fixedly embedded with an air pipe 103, and the cylinder body 1 is communicated with the buffer cylinder 2 through the air pipe 103; an air hole 203 is formed in the lower end of the outer surface of the buffer cylinder 2, the air pipe 103 is fixedly connected with the buffer cylinder 2 through the air hole 203, a second valve 201 is fixedly embedded and mounted at the upper end of the outer surface of the buffer cylinder 2, and compressed air is pumped into the buffer cylinder 2 through the second valve 201; the first limiting ring 104 is fixedly installed on the inner surface of the cylinder body 1, the first return spring 105 is movably arranged in the cylinder body 1, two ends of the first return spring 105 are fixedly connected with the lower surface of the second sealing plug 305 and the cylinder body 1 respectively, the first limiting ring 104 limits the moving distance of the second sealing plug 305, and the first return spring 105 provides an upward force for the second sealing plug 305 to enable the second sealing plug 305 to be quickly reset; a second limiting ring 205 is fixedly installed on the inner surface of the buffer cylinder 2, a second return spring 206 is movably arranged in the buffer cylinder 2, two ends of the second return spring 206 are fixedly connected with the upper surface of the first sealing plug 204 and the buffer cylinder 2 respectively, the second limiting ring 205 limits the moving distance of the first sealing plug 204, and the second return spring 206 provides a downward force for the first sealing plug 204 to enable the first sealing plug 204 to be quickly reset; two ends of a worm 402 are rotatably connected with a second connecting seat 303, two ends of the worm 402 respectively penetrate through two side surfaces of the second connecting seat 303, clamping rings 403 are symmetrically and fixedly installed on the outer side surface of the worm 402, the upper end of a screw rod 301 is fixedly connected with an inner ring of a bearing 302, a supporting plate 401 is fixedly installed on the outer side surface of a motor 4, one end of the supporting plate 401 is fixedly connected with the second connecting seat 303, an output end of the motor 4 is fixedly connected with one end of the worm 402, the motor 4 rotates, the screw rod 301 is rotated through transmission of the worm 402 and a worm wheel 304 and is ejected out of a threaded sleeve 3, otherwise, the hydraulic cylinder is contracted, the motor 4 rotates reversely, the screw rod 301 is retracted into the threaded sleeve 3, so that the distance between the two connecting seats is changed along with extension and retraction of the hydraulic cylinder, the rocker arm is supported, the protection of the hydraulic cylinder can be increased, gravity acting on the hydraulic cylinder is shared, the cutter head is slightly moved and lowered through the movement of the threaded sleeve 3, vibration of the rocker arm is reduced, abrasion between a piston rod of the hydraulic cylinder and a sealing piece is reduced, the supporting effect of the hydraulic cylinder is kept, and the hydraulic cylinder is kept when the hydraulic cylinder is suddenly damaged, the force received by the hydraulic cylinder, the hydraulic cylinder is increased, the rocker arm is fixed after sliding in a small range, the temporary supporting effect is avoided, and the rocking stability of the rocker arm is kept.

The working principle is as follows: when the hydraulic cylinder is used, the connection mode of the cylinder body 1, the rocker arm and the coal mining machine is the same as the connection mode of the hydraulic cylinder, compressed gas is pumped into the cylinder body 1 through the first valve 101, the compressed gas is pumped into the buffer cylinder 2 through the second valve 201, the first connecting seat 102 is fixed with the coal mining machine body, the second connecting seat 303 is fixed with the rocker arm, the command setting is carried out on the motor 4 in advance, the motor 4 rotates along with the extension and contraction of the hydraulic cylinder, the hydraulic cylinder extends, the motor 4 rotates, the screw rod 301 rotates through the transmission of the worm 402 and the worm wheel 304, the screw rod 301 is ejected out of the threaded sleeve 3, otherwise, the hydraulic cylinder contracts, the motor 4 rotates reversely, the screw rod 301 is retracted into the threaded sleeve 3, the distance between the two connecting seats changes along with the extension and contraction of the hydraulic cylinder, the threaded sleeve 3 slides in the cylinder body 1 under the gravity action of the rocker arm, and the second sealing plug 305 moves downwards, at the moment, the pressure intensity in the space communicated with the cylinder body 1 and the buffer cylinder 2 is increased to push the first sealing plug 204 to move upwards, the first return spring 105 gives an upward force to the first sealing plug 204, the second return spring 206 gives a downward force to the first sealing plug 204 to enable the first sealing plug 204 and the second sealing plug 305 to be quickly reset, when the pressure intensity above the first sealing plug 204 in the buffer cylinder 2 and the pressure intensity at the communication part of the cylinder body 1 and the buffer cylinder 2 are both in a certain value, the thread bushing 3 is fixed to support the rocker arm, so that the protection to the hydraulic cylinder can be increased, the gravity of the rocker arm acting on the hydraulic cylinder is shared, the vibration transmitted to the hydraulic cylinder by the thread bushing 3 is reduced by slight movement of the low rocker arm, the abrasion between the piston rod and the sealing element of the hydraulic cylinder is reduced, the supporting effect of the hydraulic cylinder is maintained, and when the hydraulic cylinder is suddenly damaged, the force borne by the thread bushing 3 is increased, after the sliding is carried out within a small range, the rocker arm is fixed, a temporary supporting effect is realized on the rocker arm, the rocker arm is prevented from shaking under the rotation of the cutter head, and the stability of the rocker arm is kept.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only, and various modifications, additions and substitutions as described for the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.

Claims

1. The utility model provides a coal-winning machine keeps away device that shakes, a serial communication port, including cylinder body (1), cylinder body (1) outside symmetry fixed mounting has buffer cylinder (2), buffer cylinder (2) inside sliding connection has sealing plug (204) No. one, threaded sleeve (3) are installed in cylinder body (1) upper end surface activity embedding, cylinder body (1) inside is located threaded sleeve (3) lower extreme fixed surface and installs No. two sealing plugs (305), threaded sleeve (3) inside movable mounting has lead screw (301), lead screw (301) upper end movable mounting has No. two connecting seats (303), no. two inside fixed surface embedding of connecting seat (303) installs bearing (302), no. two connecting seat (303) one side fixed mounting has motor (4), lead screw (301) outside surface upper end department fixed mounting has worm wheel (304), worm wheel (304) one side meshing is connected with worm (402), threaded sleeve (3) are oval cylindricality.

2. The vibration avoiding device of the coal mining machine according to claim 1, wherein a first valve (101) is fixedly embedded at the upper end and the lower end of the outer side surface of the cylinder body (1), and a first connecting seat (102) is fixedly arranged on the lower end surface of the cylinder body (1).

3. The vibration avoiding device of the coal mining machine according to claim 1, wherein a fixing frame (202) is fixedly installed on the outer side surface of the cylinder body (1), the buffer cylinder (2) is fixedly connected with the cylinder body (1) through the fixing frame (202), and air pipes (103) are symmetrically and fixedly embedded at the lower end of the outer side surface of the cylinder body (1).

4. The vibration avoiding device of the coal mining machine according to claim 3, wherein an air hole (203) is formed in the lower end of the outer side surface of the buffering cylinder (2), the air pipe (103) is fixedly connected with the buffering cylinder (2) through the air hole (203), and a second valve (201) is fixedly embedded in the upper end of the outer side surface of the buffering cylinder (2).

5. The vibration avoiding device of the coal mining machine according to claim 1, wherein a first limiting ring (104) is fixedly installed on the inner surface of the cylinder body (1), a first return spring (105) is movably arranged in the cylinder body (1), and two ends of the first return spring (105) are respectively and fixedly connected with the lower surface of a second sealing plug (305) and the cylinder body (1).

6. The vibration avoiding device of the coal mining machine according to claim 1, wherein a second limiting ring (205) is fixedly mounted on the inner surface of the buffering cylinder (2), a second return spring (206) is movably arranged in the buffering cylinder (2), and two ends of the second return spring (206) are fixedly connected with the upper surface of the first sealing plug (204) and the buffering cylinder (2) respectively.

7. The coal mining machine vibration avoiding device according to claim 1, wherein two ends of the worm (402) are rotatably connected with the second connecting seat (303), two ends of the worm (402) respectively penetrate through two side surfaces of the second connecting seat (303), clamping rings (403) are symmetrically and fixedly mounted on the outer side surface of the worm (402), the upper end of the screw rod (301) is fixedly connected with an inner ring of the bearing (302), a supporting plate (401) is fixedly mounted on the outer side surface of the motor (4), one end of the supporting plate (401) is fixedly connected with the second connecting seat (303), and the output end of the motor (4) is fixedly connected with one end of the worm (402).