A drain switch for use with a water pressure support

Abstract

A drain switch for a hydraulic support column includes a push rod mechanism, a docking seat, an extension wrench, and an extension rope. The push rod mechanism is matched with a one-way valve for water inlet on the hydraulic support column. The push rod mechanism includes a pin linked to the extension wrench. The extension wrench controls the length of the pin extending from the top of the push rod mechanism. The handle of the extension wrench is connected to the extension rope, allowing for remote control of the extension wrench's movement. The docking seat is used to fix the relative position of the push rod mechanism and the one-way valve, ensuring alignment between the pin of the push rod mechanism and the valve core of the one-way valve. This device has a simple structure, low cost, reduces construction risks during drainage of the hydraulic support column, and comprehensively protects the personal safety of the recovery operators.

Description

Technical Field

[0001] The utility model relates to a water discharge switch supporting a hydraulic prop. Background Art

[0002] In mine exploitation operations, as a key support and excavation facility, the hydraulic prop provides reliable support for the underground working space with water as the medium. However, when the hydraulic prop is used at a certain underground location and needs to be transferred to other locations for continued use, a necessary operation is to drain the water inside it completely for smooth recovery.

[0003] Currently, in the actual operation process, the adopted drainage method has relatively large safety hazards. Specifically, construction workers need to hold a top rod and continuously press the valve core of the check valve on the hydraulic prop at close range, so as to force the check valve to open and enable the water in the hydraulic prop to flow out from the check valve. However, as a support device to ensure mine safety, once the water inside the hydraulic prop is discharged, its support capacity will be lost instantly, which makes the underground area originally supported by this hydraulic prop face the risk of collapse. More seriously, in order to complete the drainage operation, construction workers have to work close to the hydraulic prop. In this case, once a collapse occurs, construction workers are extremely vulnerable to serious injuries, which virtually generates construction risks and is likely to cause construction accidents. Therefore, there is an urgent need for a safer and more effective drainage method for hydraulic props to reduce construction risks and ensure the smooth progress of underground operations. Content of the Utility Model

[0004] The utility model provides a water discharge switch supporting a hydraulic prop, which has a simple structure, low cost and can reduce the construction risk during the drainage of the hydraulic prop, so as to solve the deficiencies of the prior art.

[0005] To achieve the above object, the utility model first proposes a water discharge switch supporting a hydraulic prop, which includes a top rod mechanism, a docking clamp, an extension wrench and an extension rope. The top rod mechanism is matched with the check valve for water inlet on the hydraulic prop. The top rod mechanism includes a tappet linked with a wrench, and the length of the tappet extending from the top of the top rod mechanism is controlled by the extension wrench. The holding end of the extension wrench is connected with the extension rope to remotely control the action of the extension wrench through the extension rope. The docking clamp is used to fix the relative positions of the top rod mechanism and the check valve, so as to align the tappet of the top rod mechanism with the valve core of the check valve.

[0006] In this embodiment, the docking seat includes an upper and a lower locking plate arranged in parallel to each other. The distance between the upper and lower locking plates matches the stroke of the push rod. The upper and lower locking plates are respectively provided with a first locking groove and a second locking groove arranged in parallel to each other and positioned opposite each other. The first locking groove matches the annular locking edge on the one-way valve, and the second locking groove matches the annular locking groove on the outer wall of the push rod mechanism. The one-way valve is detachably installed in the first locking groove through the annular locking edge. The one-way valve can slide in the first locking groove, and the push rod mechanism is slidably assembled in the second locking groove through the annular locking groove.

[0007] In this embodiment, the cross-section of the annular groove is U-shaped and the opening of the annular groove is arranged radially outward. The thickness of the edge of the second groove matches the opening width of the annular groove. The annular groove is fitted into the edge of the second groove, and the edge of the second groove serves as a guide rail to realize the sliding of the annular groove within the second groove.

[0008] In this embodiment, the first slot is provided with a mounting inlet and a mounting positioning area. The diameter of the mounting inlet is larger than the outer diameter of the annular mounting edge on the one-way valve. The mounting inlet is used for the opening end of the one-way valve to enter the first slot, and the annular mounting edge is positioned between the upper and lower mounting plates. The length of the second slot covers at least the entire length of the first slot from the mounting inlet to the mounting positioning area.

[0009] In this embodiment, the push rod mechanism includes an outer tube, a push pin, and a return spring. The outer tube is a tube with a cavity in the middle. The top of the outer tube has a mating groove with an inner diameter matching the outer diameter of the one-way valve opening. An annular groove is fixed on the outer wall of the outer tube. The push pin is coaxially slidably mounted in the middle cavity of the outer tube. One end of the push pin is located inside the outer tube and a slider is fixed thereon. The other end of the push pin extends from the top of the outer tube and into the mating groove to form a pressing end that matches the valve core of the one-way valve. A return spring is fitted on the outside of the push pin and is placed in the middle cavity of the outer tube. One end of the return spring is fixed to the slider, and the other end is fixed to the bottom of the mating groove. A rotating shaft is installed radially at the bottom of the outer tube. An extended wrench is rotatably mounted on the rotating shaft. The extended wrench has an outwardly convex profile line forming a cam on the side connected to the rotating shaft. The bottom of the push pin abuts against the outer profile line of the cam through the slider, and the slider and the cam are slidably connected.

[0010] In this embodiment, the extended wrench has a through hole at the end away from the cam, and an extension rope is fixed inside the through hole.

[0011] In this embodiment, the extended wrench has two positions: an initial position and a working position. In the initial position, the extended wrench and the ejector pin are on the same straight line, and the slider is supported on the outer contour line of the cam with the minimum offset distance. When the extended wrench is rotated to be perpendicular to the ejector pin, the extended wrench is in the working position, and the slider is supported on the outer contour line of the cam with the maximum offset distance.

[0012] With the above structure, this utility model has the following advantages:

[0013] 1. This device can greatly improve the safety of dismantling water pressure support. With the help of extension rope (such as steel wire rope), water can be released and pressure relieved from a distance (more than 2 meters). Construction personnel do not need to get close to the water pressure support. This effectively avoids the safety risks to close-range operators caused by the collapse of the support due to the loss of support caused by the release of water inside the water pressure support. It comprehensively protects the personal safety of the recovery operators.

[0014] 2. This device has a simple structure and low cost. It utilizes the lever principle, using an extended wrench in conjunction with a cam to drive the ejector pin. This, combined with a return spring and the ejector pin, opens the one-way valve on the hydraulic support, releasing water and pressure. The extended wrench has an initial position and a working position; this clear workstation design allows operators to easily monitor the operation process, ensuring accurate opening and closing of the one-way valve, thus achieving reliable pressure release from the hydraulic support. The entire operation is stable and controllable, making it easy for construction personnel to master and use. Due to its simple structure and lightweight design, this device is convenient for construction personnel to carry and operate. It can flexibly cooperate with the hydraulic support for pressure release and recovery work, easily handling situations with limited space in underground well operations or requiring frequent changes in operating position, greatly enhancing its practicality.

[0015] 3. The docking seat of this device can quickly fix the relative position of the push rod mechanism and the one-way valve, and facilitates precise alignment of the push pin and the one-way valve core. The operation is convenient and efficient, further improving work efficiency and reducing construction risks. Attached Figure Description

[0016] Figure 1 This is a diagram showing the usage state of this utility model.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 This is a cross-sectional view of the docking seat of this utility model.

[0019] Figure 4 This is a top view of the docking seat of this utility model.

[0020] Figure 5 This is a cross-sectional view of the extended wrench of this utility model.

[0021] Figure 6 This is a cross-sectional view of the present invention.

[0022] In the attached diagram: 1. Push rod mechanism; 11. Connecting groove; 12. Outer sleeve; 13. Push pin; 14. Return spring; 15. Annular groove; 16. Slider; 17. Cam; 18. Rotating shaft; 2. Connecting seat; 21. First groove; 22. Second groove; 3. Extended wrench; 31. Sliding surface; 4. One-way valve; 41. Valve core; 42. Annular retaining edge; 43. Open end; 5. Extension rope. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] like Figures 1 to 6 As shown, a water release switch for a water pressure support includes a push rod mechanism 1, a docking seat 2, an extension wrench 3, and an extension rope 5. The push rod mechanism 1 is matched with a one-way valve 4 for water inlet on the water pressure support. The one-way valve 4 is equipped with a quick connector, and the outer side of the quick connector is provided with an annular retaining edge 42 for connection. The push rod mechanism 1 includes a pin 13 that is linked with the extension wrench 3. The length of the pin 13 extending from the top of the push rod mechanism 1 is controlled by the extension wrench 3. The holding end of the extension wrench 3 is connected to the extension rope 5, and the movement of the extension wrench 3 is controlled remotely by the extension rope 5. The docking seat 2 is used to fix the relative position of the push rod mechanism 1 and the one-way valve 4, so as to align the pin 13 of the push rod mechanism 1 with the valve core 41 of the one-way valve 4.

[0026] The docking seat 2 includes an upper and a lower plate arranged in parallel to each other. The distance between the upper and lower plates matches the stroke of the push rod. Both the upper and lower plates have parallel and opposite elongated through holes forming a first slot 21 and a second slot 22, respectively. The first slot 21 matches the annular retaining edge 42 on the outer wall of the inlet end of the one-way valve 4. The second slot 22 matches the annular retaining groove 15 on the outer wall of the push rod mechanism 1. The one-way valve 4 is detachably installed in the first slot 21 through the annular retaining edge 42. The one-way valve 4 can slide in the first slot 21 through the annular retaining edge 42. The push rod mechanism 1 is slidably assembled in the second slot 22 through the annular retaining groove 15.

[0027] The annular groove 15 has a U-shaped cross-section and its opening is arranged radially outward. The thickness of the edge of the second groove 22 matches the opening width of the annular groove 15. The annular groove 15 is fitted into the edge of the second groove 22, and the edge of the second groove 22 serves as a guide rail to enable the annular groove 15 to slide within the second groove 22. The first groove 21 has a fitting inlet and a fitting positioning area. The diameter of the fitting inlet is larger than the outer diameter of the annular clamping edge 42 on the one-way valve 4, which facilitates the entry of the opening end of the one-way valve 4 into the first groove 21 and places the annular clamping edge 42 between the upper and lower clamping plates. The length of the second groove 22 is not less than that of the first groove 21, and the length of the second groove 22 covers the entire length of the first groove 21 from the fitting inlet to the fitting positioning area.

[0028] like Figure 2 As shown, the push rod mechanism 1 includes an outer tube 12, a push pin 13, and a return spring 14. The outer tube 12 is a tube with a cavity in the middle. The top of the outer tube 12 has a mating groove 11 with an inner diameter matching the outer diameter of the opening end 43 of the one-way valve 4. An annular groove 15 is fixed on the outer wall of the outer tube 12. The push pin 13 is coaxially slidably assembled in the middle cavity of the outer tube 12. One end of the push pin 13 is located inside the outer tube 12 and a slider 16 is fixed thereon. The other end of the push pin 13 extends from the top of the outer tube 12 and extends into the mating groove 11 to form a pressing end that matches the valve core 41 of the one-way valve 4. A return spring is fitted on the outer side of the push pin 13. 14. The return spring 14 is placed in the middle cavity of the outer tube 12. One end of the return spring 14 is fixed on the slider 16, and the other end is fixed on the bottom of the docking groove 11. The bottom end of the outer tube 12 is radially mounted with a rotating shaft 18. An extended wrench 3 is rotatably mounted on the rotating shaft 18. The extended wrench 3 has an outwardly protruding contour line on the side connected to the rotating shaft 18 to form a cam 17. The bottom of the ejector pin 13 abuts against the outer contour line of the cam 17 through the slider 16. The slider 16 and the cam 17 are slidably connected. The extended wrench 3 has a through hole on the end away from the cam 17. An extension rope 5 is fixed in the through hole. The extension rope 5 is used to pull the extended wrench 3 over a long distance.

[0029] like Figure 5 As shown, the extended wrench 3 has two positions: an initial position and a working position. In the initial position, the extended wrench 3 and the ejector pin 13 are on the same straight line. At this time, the slider 16 is supported on the outer contour line of the cam 17 at the minimum offset position. By pulling the extended wrench 3 with the extension rope 5, the extended wrench 3 rotates around the rotating shaft 18 to be perpendicular to the ejector pin 13, reaching the working position of the extended wrench 3. At the same time, the cam 17 also rotates, so that the slider 16 is supported on the outer contour line of the cam 17 at the maximum offset position, thereby pushing the ejector pin 13 upward by a stroke L. The ejector pin 13 pushes up the valve core 41 on the one-way valve 4, realizing the opening of the one-way valve 4.

[0030] During operation, first move the push rod mechanism 1 to the mounting inlet of the first slot 21, then align the mounting inlet of the docking seat 2 with the one-way valve 4, and move the docking seat 2 up and down so that the open end 43 of the one-way valve 4 is placed in the mounting inlet, and at the same time, insert the open end 43 of the one-way valve 4 into the docking groove 11 of the push rod mechanism 1, thus completing the alignment of the push pin 13 of the push rod mechanism 1 with the valve core 41 of the one-way valve 4. Then move the docking seat 2 and the push rod mechanism 1 horizontally and synchronously so that the annular retaining edge 42 on the one-way valve 4 moves from the mounting inlet to the mounting positioning area along the first slot 21, thus completing the fixing of the relative position of the push rod mechanism 1 and the one-way valve 4. Then fine-tune the push rod mechanism 1 to ensure that the push pin 13 and the valve core 41 of the one-way valve 4 are coaxial.

[0031] When the water pressure support needs to release pressure and drain water, the operator simply pulls the extension rope 5, causing the extended wrench 3 to rotate from a vertical position to a horizontal position. This causes the ejector pin to push upward against the valve core of the one-way valve 4, compressing the spring in the one-way valve 4. The valve core then disengages from the sealing nylon gasket, allowing water to flow out of the one-way valve 4, thus completing the pressure release and compression of the water pressure support. After the construction position is safe, the water pressure support is retrieved, and the extended wrench is returned to its original position. The device is then removed by reversing the operation, enabling its reuse.

[0032] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A water discharge switch for use with a water pressure support, characterized in that: The device includes a push rod mechanism, a docking seat, an extension wrench, and an extension rope. The push rod mechanism is matched with a one-way valve for water inlet on the water pressure support. The push rod mechanism includes a pin that is linked to the extension wrench. The extension wrench controls the length of the pin extending from the top of the push rod mechanism. The handle end of the extension wrench is connected to the extension rope, allowing the extension wrench to be controlled remotely. The docking seat is used to fix the relative position of the push rod mechanism and the one-way valve, achieving alignment between the pin of the push rod mechanism and the valve core of the one-way valve.

2. The water discharge switch supporting the hydraulic pressure strut according to claim 1, characterized in that: The docking seat includes an upper and a lower locking plate arranged in parallel to each other. The distance between the upper and lower locking plates matches the stroke of the push rod. The upper and lower locking plates are respectively provided with a first locking groove and a second locking groove arranged in parallel to each other and positioned opposite each other. The first locking groove matches the annular locking edge on the one-way valve, and the second locking groove matches the annular locking groove on the outer wall of the push rod mechanism. The one-way valve is detachably installed in the first locking groove through the annular locking edge. The one-way valve can slide in the first locking groove, and the push rod mechanism is slidably assembled in the second locking groove through the annular locking groove.

3. The water discharge switch for the hydraulic prop according to claim 2, characterized in that: The annular slot has a U-shaped cross-section, and the opening of the annular slot is arranged radially outward. The thickness of the edge of the second slot matches the opening width of the annular slot. The annular slot is fitted into the edge of the second slot, and the edge of the second slot acts as a guide rail to realize the sliding of the annular slot within the second slot.

4. The water discharge switch for the hydraulic prop according to claim 2, characterized in that: The first slot has a mounting inlet and a mounting positioning area. The diameter of the mounting inlet is larger than the outer diameter of the annular mounting edge on the check valve. The mounting inlet is used for the opening end of the check valve to enter the first slot, and the annular mounting edge is positioned between the upper and lower mounting plates. The length of the second slot covers at least the entire length of the first slot from the mounting inlet to the mounting positioning area.

5. The water discharge switch supporting the hydraulic prop according to any one of claims 1 to 4, characterized in that: The push rod mechanism includes an outer tube, a push pin, and a return spring. The outer tube is a tube with a cavity in the middle. The top of the outer tube has a mating groove with an inner diameter matching the outer diameter of the one-way valve opening. An annular groove is fixed on the outer wall of the outer tube. The push pin is coaxially and slidably mounted in the middle cavity of the outer tube. One end of the push pin is located inside the outer tube and a slider is fixed thereon. The other end of the push pin extends from the top of the outer tube and into the mating groove to form a pressing end that matches the valve core of the one-way valve. A return spring is fitted on the outside of the push pin and is located in the middle cavity of the outer tube. One end of the return spring is fixed to the slider, and the other end is fixed to the bottom of the mating groove. A rotating shaft is installed radially at the bottom of the outer tube. An extended wrench is rotatably mounted on the rotating shaft. The extended wrench has a convex profile line on the side connected to the rotating shaft to form a cam. The bottom of the push pin abuts against the outer profile line of the cam through the slider. The slider and the cam are slidably connected.

6. The water discharge switch for the hydraulic prop according to claim 5, characterized in that: The extended wrench has a through hole at the end away from the cam, and an extension rope is fixed inside the through hole.

7. The water discharge switch for the hydraulic prop according to claim 5, characterized in that: The extended wrench has two positions: an initial position and a working position. In the initial position, the length direction of the extended wrench is on the same straight line as the ejector pin, and the slider is supported on the outer contour line of the cam with the minimum offset distance. When the extended wrench is rotated to be perpendicular to the ejector pin, the extended wrench is in the working position, and the slider is supported on the outer contour line of the cam with the maximum offset distance.

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