A suspended adjustable gas-liquid mixing cavity type buffer and working method

Abstract

The present invention discloses a suspended adjustable gas-liquid mixed cavity type buffer and a working method, which comprises: an anchor rod, the top of which is inserted into the roof of the tunnel, and the bottom of the anchor rod is connected to the tower umbrella cover; a cavity tube, which is connected to the bottom of the tower umbrella cover; a liquid filling interface matched with an external liquid pump is provided at the lower part of the cavity tube, and a liquid inlet and outlet switch is provided on the liquid filling interface; a lower plate is sealed and connected to the bottom of the cavity tube; a buffer pull rod, which is movably inserted into the interior of the cavity tube, and the top of the buffer pull rod has a piston column matching the inner wall of the cavity tube, and the bottom of the buffer pull rod is connected to the hook ring after passing through the lower plate downward, and a gas-liquid cavity is enclosed between the lower surface of the piston column, the inner wall of the cavity tube and the upper surface of the lower plate, wherein the interior of the buffer pull rod has an air guide hole; a steel wire rope, one end of which is connected to the hook ring, and the other end of the steel wire rope is connected to the belt conveyor. The present invention has the advantages of simple structure, adjustable buffering performance, and convenient and quick use.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel support devices, and in particular to a suspended adjustable gas-liquid mixing cavity type buffer. Background Art

[0002] The filling materials in the goaf are generally transported by belt conveyors arranged in the tunnels. In many tunnels, the belt conveyors must be suspended on the tunnel roof due to factors such as large deformation of the bottom plate. Affected by the imbalance of the filling material supply and the change of the filling material density, the belt conveyors will vibrate to a certain extent. In order to avoid damage to the equipment due to vibration, shock-absorbing and buffering devices must be arranged.

[0003] At present, the shock absorbing device of the belt conveyor in the coal mine is a metal spring. However, the performance parameters of the metal spring are fixed and cannot be changed when leaving the factory. When the application location is changed or the transportation capacity of the belt conveyor is changed, the buffering performance of the metal spring is often not suitable for the new environment and needs to be replaced with a new metal spring, which makes the operation cumbersome and increases the cost. Summary of the invention

[0004] The present invention mainly solves the technical problems existing in the prior art, thereby providing a suspended adjustable gas-liquid mixing cavity type buffer with simple structure and adjustable buffering performance.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions:

[0006] The invention provides a suspended adjustable gas-liquid mixing cavity type buffer, which comprises:

[0007] An anchor rod, the top of which is inserted into the roof of the tunnel, and the bottom of which is connected to the tower umbrella cover;

[0008] The cavity is connected to the bottom of the tower canopy; the lower part of the cavity is provided with a liquid filling interface matched with an external liquid pump, and the liquid filling interface is provided with a liquid inlet and outlet switch; the bottom of the cavity is sealed and connected with a lower plate;

[0009] A buffer pull rod is movably arranged inside the cavity tube, the top of the buffer pull rod is provided with a piston column matching the inner wall of the cavity tube, the bottom of the buffer pull rod passes downward through the lower plate and is connected to the hook ring, and a gas-liquid cavity is enclosed between the lower surface of the piston column, the inner wall of the cavity tube and the upper surface of the lower plate, wherein the buffer pull rod has an air guide hole inside, the outlet end of the air guide hole is located at the upper part of the buffer pull rod and is connected to the upper part of the gas-liquid cavity, the inlet end of the air guide hole is located at the bottom of the buffer pull rod, and cooperates with an external air pump through an air inlet pipe, and an air inlet switch is provided on the air inlet pipe;

[0010] One end of the steel wire rope is connected to the hook ring, and the other end of the steel wire rope is connected to the belt conveyor.

[0011] Furthermore, an upper plate is provided between the top of the cavity tube and the bottom of the tower umbrella cover, an anti-impact spring is provided on the lower surface of the upper plate, and the anti-impact spring cooperates with the piston column.

[0012] Furthermore, the bottom of the tower umbrella cover passes through the upper plate and the top of the cavity tube in sequence through the upper bolt and then cooperates with the upper nut to lock the tower umbrella cover, the upper plate and the cavity tube.

[0013] Furthermore, a plurality of cover plate holes are provided at intervals on the tower umbrella cover.

[0014] Furthermore, an upper sealed rubber ring is provided between the piston column and the inner wall of the cavity.

[0015] Furthermore, a lower sealed rubber ring is provided between the buffer pull rod and the lower plate.

[0016] Furthermore, a lower mounting circular plate is provided at the bottom of the buffer pull rod, the hook ring is locked on the buffer pull rod through a hanging fastening clip and fastening clip bolts and nuts, and the hook ring is sleeved on the outer surface of the lower mounting circular plate.

[0017] Furthermore, the bottom of the cavity tube is locked with the lower plate by means of lower bolts and lower nuts.

[0018] The beneficial effects of the present invention are as follows: the belt conveyor is suspended in the tunnel by binding and connecting the hook ring and the belt conveyor respectively with the steel wire rope, and the compression performance of the gas and liquid in the gas-liquid cavity is used for buffering. When the buffering capacity needs to be adjusted, it is achieved by further injecting or discharging liquid, further inflating or exhausting the liquid, gas volume and ratio inside the gas-liquid cavity, so that the present invention has the advantages of simple structure, adjustable buffering performance, and convenient and quick use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a diagram showing the use state of the suspended adjustable gas-liquid mixing cavity type buffer of the present invention;

[0021] Figure 2It is a diagram of the filling state of the suspended adjustable gas-liquid mixing cavity type buffer of the present invention;

[0022] Figure 3 It is a diagram of the inflation state of the suspended adjustable gas-liquid mixing cavity type buffer of the present invention;

[0023] Figure 4 It is a structural schematic diagram of a suspended adjustable gas-liquid mixing cavity type buffer of the present invention;

[0024] Figure 5 It is a first angle sectional view of the suspended adjustable gas-liquid mixing cavity type buffer of the present invention;

[0025] Figure 6 It is a second angle sectional view of the suspended adjustable gas-liquid mixing chamber type buffer of the present invention. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0027] See also Figure 1-6 As shown, the suspended adjustable gas-liquid mixing cavity type buffer of the present invention comprises:

[0028] An anchor rod 1, the top of which is inserted into the roof 2 of the tunnel, and the bottom of which is connected to the tower umbrella cover 3;

[0029] The cavity tube 4 is connected to the bottom of the tower umbrella cover 3; the lower part of the cavity tube 4 is provided with a filling interface 6 matched with an external liquid pump 5, and the filling interface 6 is provided with a liquid inlet and outlet switch 7; the bottom of the cavity tube 4 is sealed and connected with a lower plate 8; in the present invention, the liquid inlet and outlet switch 7 is used to control the closing and opening of the filling interface 6, and the liquid pump 5 can fill or discharge the cavity tube 4 through the filling interface 6.

[0030] A buffer rod 9 is movably arranged inside the cavity 4, and a piston column 10 matching the inner wall of the cavity 4 is provided on the top of the buffer rod 9, and the bottom of the buffer rod 9 passes downward through the lower plate 8 and is connected to the hook ring 11, and a gas-liquid cavity 12 is enclosed between the lower surface of the piston column 10, the inner wall of the cavity 4 and the upper surface of the lower plate 8, wherein an air guide hole 13 is provided inside the buffer rod 9, and the outlet end of the air guide hole 13 is located at the upper part of the buffer rod 9 and is connected to the upper part of the gas-liquid cavity 12, and the inlet end of the air guide hole 13 is located at the bottom of the buffer rod 9, and cooperates with the external air pump 14 through the air inlet pipe 26, and an air inflation switch 15 is provided on the air inlet pipe 26; in the present invention, the air inflation switch 15 is used to control the closing and opening of the air inlet pipe 26, and the air inflation pump 14 can inflate or exhaust the gas-liquid cavity 12 through the air inlet pipe 26.

[0031] One end of the steel wire rope 14 is connected to the hook ring 11 , and the other end of the steel wire rope 14 is connected to the belt conveyor 15 .

[0032] The present invention is connected to the hook ring 11 and the belt conveyor 15 by binding with the steel wire rope 14 respectively, so that the belt conveyor 15 is suspended in the tunnel, and the compression performance of the gas and liquid in the gas-liquid chamber 12 is used for buffering. When the buffering capacity needs to be adjusted, it is achieved by further injecting or discharging liquid, further inflating or exhausting to adjust the volume and ratio of the liquid and gas inside the gas-liquid chamber 12, so that the present invention has the advantages of simple structure, adjustable buffering performance, and convenient and quick use.

[0033] Preferably, in order to further improve the buffering effect, an upper plate 16 is provided between the top of the cavity 4 and the bottom of the tower umbrella cover 3, and an anti-impact spring 17 is provided on the lower surface of the upper plate 16, and the anti-impact spring 17 cooperates with the piston column 10. When filling with liquid or gas, the piston column 10 can reduce the impact on the upper plate 16 through the buffering effect of the anti-impact spring 17 after rising.

[0034] In the present invention, the bottom of the tower canopy 3 passes through the upper plate 16 and the top of the cavity 4 in sequence through the upper bolt 18 and then cooperates with the upper nut 19 to lock the tower canopy 3, the upper plate 16 and the cavity 4.

[0035] Preferably, in order to reduce the overall weight, a plurality of cover plate holes 20 are provided at intervals on the tower canopy 3 .

[0036] In the present invention, in order to improve the sealing effect, an upper sealed rubber ring 21 is provided between the piston column 10 and the inner wall of the cavity 4. A lower sealed rubber ring 22 is provided between the buffer pull rod 9 and the lower plate 8.

[0037] In the present invention, a lower mounting circular plate 23 is provided at the bottom of the buffer pull rod 9, the hook ring 11 is locked on the buffer pull rod 9 through the hanging fastening clip 24 and the fastening clip bolt nut 25, and the hook ring 11 is sleeved on the outer surface of the lower mounting circular plate 23. In this way, the contact area between the hook ring 11 and the buffer pull rod 9 can be increased, thereby improving the overall safety.

[0038] Preferably, the bottom of the cavity 4 is locked with the lower plate 8 by means of a lower bolt 24 and a lower nut 25 .

[0039] The working process of the present invention is:

[0040] Injection and inflation stage: first close the inflation switch 15, open the liquid inlet and outlet switch 7, connect the liquid pump 5 to the liquid filling interface 6 through the pipeline, then start the liquid pump 5 to inject a certain amount of liquid into the gas-liquid cavity 12, and after reaching the design value, stop injecting liquid, close the liquid inlet and outlet switch 7, then connect the air inlet pipe 26 to the inflation pump 14, open the inflation switch 15 to inject a certain amount of gas into the gas-liquid cavity 12, and after reaching the design value, stop inflating and close the inflation switch 15. When the buffer capacity needs to be adjusted, it can be achieved by further injecting or discharging liquid, further inflating or exhausting gas to adjust the volume and ratio of liquid and gas in the gas-liquid cavity.

[0041] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. A suspended adjustable gas-liquid mixing cavity type buffer, characterized in that: include: An anchor rod, the top of which is inserted into the roof of the tunnel, and the bottom of which is connected to the tower umbrella cover; The cavity is connected to the bottom of the tower canopy; the lower part of the cavity is provided with a liquid filling interface matched with an external liquid pump, and the liquid filling interface is provided with a liquid inlet and outlet switch; the bottom of the cavity is sealed and connected with a lower plate; A buffer pull rod is movably arranged inside the cavity tube, the top of the buffer pull rod is provided with a piston column matching the inner wall of the cavity tube, the bottom of the buffer pull rod passes downward through the lower plate and is connected to the hook ring, and a gas-liquid cavity is enclosed between the lower surface of the piston column, the inner wall of the cavity tube and the upper surface of the lower plate, wherein the buffer pull rod has an air guide hole inside, the outlet end of the air guide hole is located at the upper part of the buffer pull rod and is connected to the upper part of the gas-liquid cavity, the inlet end of the air guide hole is located at the bottom of the buffer pull rod, and cooperates with an external air pump through an air inlet pipe, and an air inlet switch is provided on the air inlet pipe; One end of the steel wire rope is connected to the hook ring, and the other end of the steel wire rope is connected to the belt conveyor.

2. The suspended adjustable gas-liquid mixing cavity type buffer according to claim 1, characterized in that: An upper plate is arranged between the top of the cavity tube and the bottom of the tower umbrella cover, and an anti-impact spring is arranged on the lower surface of the upper plate, and the anti-impact spring is matched with the piston column.

3. The suspended adjustable gas-liquid mixing cavity type buffer according to claim 2, characterized in that: The bottom of the tower umbrella cover passes through the upper plate and the top of the cavity tube in sequence through the upper bolt and then cooperates with the upper nut to lock the tower umbrella cover, the upper plate and the cavity tube.

4. The suspended adjustable gas-liquid mixing cavity type buffer according to claim 1, characterized in that: The tower umbrella cover is provided with a plurality of cover plate holes at intervals.

5. The suspended adjustable gas-liquid mixing cavity type buffer according to any one of claims 1 to 4, characterized in that: An upper sealed rubber ring is arranged between the piston column and the inner wall of the cavity tube.

6. The suspended adjustable gas-liquid mixing cavity type buffer according to claim 5, characterized in that: A lower sealed rubber ring is arranged between the buffer pull rod and the lower plate.

7. The suspended adjustable gas-liquid mixing cavity type buffer according to claim 1, characterized in that: A lower mounting circular plate is provided at the bottom of the buffer pull rod, the hook ring is locked on the buffer pull rod through a hanging fastening clip and a fastening clip bolt nut, and the hook ring is sleeved on the outer surface of the lower mounting circular plate.

8. The suspended adjustable gas-liquid mixing cavity type buffer according to claim 1, characterized in that: The bottom of the cavity tube is locked with the lower plate through lower bolts and lower nuts.

9. The working method of the suspended adjustable gas-liquid mixing cavity type buffer according to any one of claims 1 to 8, characterized in that: During the liquid injection and gas charging stage, first close the gas charging switch, open the liquid inlet and discharge switch, connect the liquid pump to the liquid charging interface through the pipeline, then start the liquid pump to inject a certain amount of liquid into the gas-liquid cavity, and after reaching the design value, stop the liquid injection, close the liquid inlet and discharge switch 7, then connect the air inlet pipe to the gas charging pump, open the gas charging switch to fill a certain amount of gas into the gas-liquid cavity, and after reaching the design value, stop the gas charging, and close the gas charging switch; when the buffering capacity needs to be adjusted, it can be achieved by further injecting or discharging liquid, further inflating or exhausting the gas to adjust the volume and ratio of the liquid and gas inside the gas-liquid cavity.

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