Fixing device for switch valve of constant deceleration hydraulic station of auxiliary shaft of coal mine
By designing a fixing device for the constant deceleration hydraulic station in the auxiliary shaft of a coal mine, and using structures such as gears and clamps to fix the valve handle, the problem of accidental activation of the valve was solved, ensuring the safety and stability of the hoist.
Patent Information
- Application Number
- CN202520808411.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-27
AI Technical Summary
The lack of fixed devices on the switching valves of the constant deceleration hydraulic station in the auxiliary shaft of the coal mine makes it easy for operators to touch the handles during inspections or cleaning, causing accidental rotation, resulting in pressure loss and braking accidents, which threatens the safe operation of the hoist.
A fixing device was designed. Through the cooperation of gears, clamping rods, rubber pads, diagonal rods and rectangular blocks, the rotation of the threaded rod drives the clamping rod to move and clamp the gear, preventing the first handle from turning accidentally. At the same time, through the cooperation of round shafts, slots, clamping rods and springs, the second handle is folded and locked, increasing the difficulty of opening the valve.
It effectively prevents accidental rotation of the valve handle, reduces the possibility of accidental contact, ensures the safe operation of the hoist, and avoids pressure loss accidents caused by accidental operation.
Smart Images
Figure CN223938824U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of hydraulic stations in coal mine auxiliary shafts, specifically a fixing device for the switching valves of a constant deceleration hydraulic station in a coal mine auxiliary shaft. Background Technology
[0002] The constant deceleration hydraulic station in the auxiliary shaft of a coal mine is a crucial safety control device in the mine hoisting system. It is mainly used to achieve constant deceleration control during emergency braking of the hoist, ensuring that the hoisting container (such as a cage or skip) stops at a constant deceleration, thereby protecting the safety of personnel and equipment. It is widely used in the auxiliary shaft hoisting system of coal mines, especially in situations requiring high safety and stability.
[0003] When using a constant deceleration hydraulic station in a coal mine auxiliary shaft, it is necessary to use corresponding switching valves for control. However, in actual use, the switching valves still have shortcomings. Due to the excessive length of the valve handles and the lack of corresponding fixing devices, operators are prone to accidentally touching the valve handles during inspections or cleaning, causing the valves to rotate unexpectedly. This can lead to pressure loss and trigger a series of braking accidents, posing a serious threat to the safe operation of the hoist. Therefore, improvements are needed. Utility Model Content
[0004] The purpose of this utility model is to address the above-mentioned problems. This utility model provides a fixing device for the switch valve of a constant deceleration hydraulic station in a coal mine auxiliary shaft, which has the advantage of fixing the switch valve handle.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for a switch valve in a constant deceleration hydraulic station in a coal mine auxiliary shaft, comprising a switch valve body, a base plate fixedly installed at the bottom end of the switch valve body, valve stems fixedly installed on the left and right sides of the middle of the top of the switch valve body, a first handle fixedly sleeved on the top of the outer surface of the valve stem, a gear fixedly installed at the bottom end of the first handle, the bottom end of the gear being movably connected to the top of the switch valve body, clamping rods movably connected on the front and rear sides of the top of the switch valve body, two clamping rods, rubber pads fixedly installed on the left and right sides of the opposite surfaces of the two clamping rods, inclined rods hinged to the middle of the bottom ends of the two clamping rods, two inclined rods, a rectangular block hinged to the bottom end of each of the two inclined rods, a threaded rod threadedly sleeved on the inner thread of the middle of the rectangular block, a handle fixedly sleeved on the top of the outer surface of the threaded rod, a top block movably connected to the bottom end of the handle, the inner surface of the middle of the top block being movably sleeved with the outer surface of the threaded rod.
[0006] As a preferred embodiment of this utility model, the left and right sides of the middle of the two clamping rods are respectively movably sleeved with limiting plates, and the front and rear sides of the outer surface of the limiting plates are respectively fixedly sleeved with support blocks, and the bottom end of the support block is fixedly connected to the top end of the switch valve body.
[0007] In a preferred embodiment of this utility model, a bottom block is movably sleeved on the bottom of the outer surface of the threaded rod. The bottom end of the bottom block is fixedly connected to the top end of the switch valve body. Limiting rods are fixedly installed on the front and rear sides of the top end of the bottom block, and the top end of the limiting rod is fixedly connected to the bottom end of the top block. The top of the outer surface of the limiting rod is movably sleeved on the inner surface of the rectangular block.
[0008] In a preferred embodiment of this invention, a second handle is movably sleeved on the outward side of the outer surface of the first handle, and a round shaft is movably sleeved inside the second handle, with the outer surface of the round shaft and the inner surface of the first handle being fixedly sleeved together.
[0009] As a preferred embodiment of this utility model, a slot is provided at the top center of the second handle near the first handle, and a lever is movably connected to the bottom of the second handle near the first handle, with the top of the lever movably connected to the bottom of the first handle.
[0010] As a preferred embodiment of this utility model, a T-shaped block is movably sleeved inside the lever on the side near the first handle. The top end of the T-shaped block is fixedly connected to the bottom end of the first handle. A spring is fixedly installed on the outward side of the outer surface of the T-shaped block, and the other end of the spring is fixedly connected to the inner surface of the lever.
[0011] As a preferred embodiment of this utility model, a baffle is movably connected to the top of the second handle near the side of the first handle, and the bottom end of the baffle is fixedly connected to the top end of the first handle.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. This utility model, by setting up gears, clamping rods, rubber pads, inclined rods, and rectangular blocks, causes the threaded rod to rotate when the handle is turned. Since the outer surface of the threaded rod and the inner surface of the rectangular block are threaded together, the rectangular block will move along with the inclined rod under the action of the threaded rod. This causes the other end of the inclined rod to exert a pulling force on the clamping rod, pulling the two clamping rods to move in opposite directions along with the rubber pads, thereby clamping the gear. In this way, the first handle can be fixed by the cooperation of the gears, clamping rods, and rubber pads to prevent it from rotating accidentally.
[0014] 2. This utility model, by setting up a round shaft, a slot, a lever, a T-block, and a spring, allows the lever to move along the outer surface of the T-block and compress the spring when the lever is pushed, thereby releasing the lever from obstructing the second handle. At this time, turning the second handle will cause it to rotate around the round shaft until the slot and lever are aligned. Under the restoring action of the spring, the lever will return to its original position and embed into the slot, thus locking the second handle. This allows the valve handle to be folded, increasing the difficulty of opening the valve and reducing the possibility of accidental activation of the valve handle. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the front of the present invention;
[0017] Figure 3 This is a side cross-sectional view of the present invention;
[0018] Figure 4 for Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;
[0019] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point B in the middle.
[0020] In the diagram: 1. Main body of the valve; 2. Base plate; 3. Valve stem; 4. First handle; 5. Gear; 6. Clamping rod; 7. Rubber pad; 8. Diagonal rod; 9. Rectangular block; 10. Threaded rod; 11. Handle; 12. Limiting plate; 13. Support block; 14. Top block; 15. Bottom block; 16. Limiting rod; 17. Round shaft; 18. Second handle; 19. Slot; 20. Clamping rod; 21. T-block; 22. Spring; 23. Baffle. Detailed Implementation
[0021] 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.
[0022] like Figures 1 to 5As shown, this utility model provides a fixing device for a constant deceleration hydraulic station switch valve in a coal mine auxiliary shaft. It includes a switch valve body 1, a base plate 2 fixedly installed at the bottom end of the switch valve body 1, valve stems 3 fixedly installed on the left and right sides of the top center of the switch valve body 1, a first handle 4 fixedly sleeved on the top of the outer surface of the valve stem 3, a gear 5 fixedly installed at the bottom end of the first handle 4, the bottom end of the gear 5 being movably connected to the top end of the switch valve body 1, and the front and rear sides of the top end of the switch valve body 1 being movably connected to... There are two clamping rods 6. Rubber pads 7 are fixedly installed on the left and right sides of the opposite faces of the two clamping rods 6. Diagonal rods 8 are hinged to the middle of the bottom of the two clamping rods 6. There are two diagonal rods 8. Rectangular blocks 9 are hinged to the bottom of the two diagonal rods 8. A threaded rod 10 is threaded into the middle of the rectangular block 9. A handle 11 is fixedly sleeved on the top of the outer surface of the threaded rod 10. A top block 14 is movably connected to the bottom of the handle 11. The inner surface of the middle of the top block 14 is movably sleeved with the outer surface of the threaded rod 10.
[0023] When the handle 11 is rotated, the threaded rod 10 will rotate along the inner surface of the top block 14. Since the threaded rod 10 and the rectangular block 9 are threaded together, as the threaded rod 10 rotates, the rectangular block 9 will move along with the bottom ends of the two inclined rods 8. This will cause the other ends of the two inclined rods 8 to exert a pulling force on the two clamping rods 6 respectively, pulling the two clamping rods 6 to move in opposite directions along with the rubber pads 7 to clamp the gear 5. This will fix the gear 5 and the first handle 4, thereby preventing the first handle 4 from rotating accidentally and causing a loss of pressure and triggering a series of braking accidents.
[0024] Among them, the left and right sides of the middle of the two clamping rods 6 are respectively movably sleeved with limit plates 12, and the front and rear sides of the outer surface of the limit plates 12 are respectively fixedly sleeved with support blocks 13, and the bottom end of the support blocks 13 is fixedly connected to the top end of the switch valve body 1.
[0025] The presence of the limiting plate 12 and the support block 13 will restrict the movement of the clamping rod 6, thereby ensuring the stability of the movement of the clamping rod 6 and the rubber pad 7.
[0026] Among them, a bottom block 15 is movably sleeved on the bottom of the outer surface of the threaded rod 10. The bottom end of the bottom block 15 is fixedly connected to the top end of the switch valve body 1. Limiting rods 16 are fixedly installed on the front and rear sides of the top end of the bottom block 15. The top end of the limiting rod 16 is fixedly connected to the bottom end of the top block 14. The top of the outer surface of the limiting rod 16 is movably sleeved on the inner surface of the rectangular block 9.
[0027] The presence of the bottom block 15, together with the top block 14, will provide auxiliary support and fixation, while the presence of the limiting rod 16 can restrict the movement of the rectangular block 9.
[0028] Among them, the second handle 18 is movably sleeved on the outward side of the outer surface of the first handle 4, and the round shaft 17 is movably sleeved inside the second handle 18. The outer surface of the round shaft 17 and the inner surface of the first handle 4 are fixedly sleeved.
[0029] When the second handle 18 is turned, it will rotate around the circular shaft 17, thereby folding the valve handle, increasing the difficulty of opening the valve and reducing the possibility of the valve handle being accidentally touched.
[0030] The second handle 18 has a slot 19 at the top center near the first handle 4, and a lever 20 is movably connected to the bottom of the second handle 18 near the first handle 4. The top of the lever 20 is movably connected to the bottom of the first handle 4.
[0031] The dimensions of the slot 19 and the lever 20 are the same, thus ensuring that the lever 20 can be inserted into the slot 19.
[0032] Among them, a T-shaped block 21 is movably sleeved inside the lever 20 near the first handle 4. The top of the T-shaped block 21 is fixedly connected to the bottom of the first handle 4. A spring 22 is fixedly installed on the outward side of the outer surface of the T-shaped block 21. The other end of the spring 22 is fixedly connected to the inner surface of the lever 20.
[0033] When the lever 20 is pushed, it will move along the outer surface of the T-block 21 and compress the spring 22. Under the restoring action of the spring 22, it will be forced to return to its original position.
[0034] Among them, a baffle 23 is movably connected to the top of the second handle 18 near the side of the first handle 4, and the bottom end of the baffle 23 is fixedly connected to the top end of the first handle 4.
[0035] The presence of the baffle 23 will block the second handle 18, thereby preventing the second handle 18 from being extended excessively.
[0036] Working principle and usage process of this utility model:
[0037] After the valve is used, the operator rotates the handle 11, causing the threaded rod 10 to rotate along the inner surfaces of the top block 14 and the bottom block 15. This causes the rectangular block 9, which is threaded onto the outer surface of the threaded rod 10, to move along the outer surface of the limiting rod 16, along with the second handle 18. This causes the other end of the second handle 18 to exert a pulling force on the clamping rod 6, pulling the two clamping rods 6 to move in opposite directions along the outer surface of the limiting plate 12, thereby clamping the gear 5. In this way, the first handle 4 can be fixed by the cooperation of the gear 5, the clamping rods 6, and the rubber pads 7, preventing it from rotating accidentally.
[0038] The operator then pushes the lever 20, causing it to move along the outer surface of the T-block 21 and compress the spring 22 until the lever 20 separates from the second handle 18, releasing the lever 20 from obstructing the second handle 18. Next, the second handle 18 is moved, causing it to rotate around the circular shaft 17. When the slot 19 and the lever 20 are aligned, the lever 20 is released. At this point, under the restoring action of the spring 22, the lever 20 returns to its original position and embeds into the slot 19, thus locking the position of the second handle 18. This allows the valve handle to be folded, increasing the difficulty of opening the valve and reducing the possibility of accidental activation of the valve handle.
[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fixing device for a switching valve in a constant deceleration hydraulic station in a coal mine auxiliary shaft, comprising a switching valve body (1), characterized in that: A base plate (2) is fixedly installed at the bottom end of the valve body (1). A valve stem (3) is fixedly installed on the left and right sides of the middle of the top of the valve body (1). A first handle (4) is fixedly sleeved on the top of the outer surface of the valve stem (3). A gear (5) is fixedly installed at the bottom end of the first handle (4). The bottom end of the gear (5) is movably connected to the top of the valve body (1). Clamping rods (6) are movably connected to the front and rear sides of the top of the valve body (1). There are two clamping rods (6). The two clamping rods (6) are connected to each other. Rubber pads (7) are fixedly installed on the left and right sides of the opposite side. The middle part of the bottom end of the two clamping rods (6) is hinged with a diagonal rod (8). There are two diagonal rods (8). The bottom end of each diagonal rod (8) is hinged with a rectangular block (9). The inner thread of the middle end of the rectangular block (9) is threaded with a threaded rod (10). The top of the outer surface of the threaded rod (10) is fixedly fitted with a handle (11). The bottom end of the handle (11) is movably connected with a top block (14). The inner surface of the middle end of the top block (14) and the outer surface of the threaded rod (10) are movably fitted together.
2. The fixing device for the switching valve of a constant deceleration hydraulic station in a coal mine auxiliary shaft according to claim 1, characterized in that: Limiting plates (12) are movably sleeved on the left and right sides of the middle of the two clamping rods (6). Support blocks (13) are fixedly sleeved on the front and rear sides of the outer surface of the limiting plates (12). The bottom end of the support blocks (13) is fixedly connected to the top end of the switch valve body (1).
3. The fixing device for the switching valve of a constant deceleration hydraulic station in a coal mine auxiliary shaft according to claim 1, characterized in that: A bottom block (15) is movably sleeved on the bottom of the outer surface of the threaded rod (10). The bottom end of the bottom block (15) is fixedly connected to the top end of the switch valve body (1). Limiting rods (16) are fixedly installed on the front and rear sides of the top end of the bottom block (15). The top end of the limiting rod (16) is fixedly connected to the bottom end of the top block (14). The top of the outer surface of the limiting rod (16) is movably sleeved on the inner surface of the rectangular block (9).
4. A fixing device for the switching valve of a constant deceleration hydraulic station in a coal mine auxiliary shaft according to claim 1, characterized in that: A second handle (18) is movably sleeved on the outward side of the outer surface of the first handle (4), and a round shaft (17) is movably sleeved inside the second handle (18). The outer surface of the round shaft (17) and the inner surface of the first handle (4) are fixedly sleeved.
5. A fixing device for the switching valve of a constant deceleration hydraulic station in a coal mine auxiliary shaft according to claim 4, characterized in that: A slot (19) is provided at the top center of the second handle (18) near the first handle (4), and a lever (20) is movably connected to the bottom of the second handle (18) near the first handle (4). The top of the lever (20) is movably connected to the bottom of the first handle (4).
6. A fixing device for the switching valve of a constant deceleration hydraulic station in a coal mine auxiliary shaft according to claim 5, characterized in that: A T-shaped block (21) is movably sleeved inside the lever (20) on the side near the first handle (4). The top end of the T-shaped block (21) is fixedly connected to the bottom end of the first handle (4). A spring (22) is fixedly installed on the outward side of the outer surface of the T-shaped block (21). The other end of the spring (22) is fixedly connected to the inner surface of the lever (20).
7. A fixing device for the switching valve of a constant deceleration hydraulic station in a coal mine auxiliary shaft according to claim 4, characterized in that: A baffle (23) is movably connected to the top of the second handle (18) near the side of the first handle (4), and the bottom end of the baffle (23) is fixedly connected to the top end of the first handle (4).