Mine pneumatic loading mechanical operating valve and using method

Abstract

The invention relates to the technical field of operating valves, and discloses a mine pneumatic loading mechanical operating valve and a using method.The mine pneumatic loading mechanical operating valve comprises a supporting frame, a pressure adjusting cavity, a brake cavity and a distribution cavity are formed in the front face of the supporting frame, and operating mechanisms are arranged in the pressure adjusting cavity, the brake cavity and the distribution cavity; a reinforcing mechanism is arranged on the outer side of the supporting frame, and limiting mechanisms are arranged at the top and the bottom of the supporting frame. The device has the advantages of being high in practicability and good in stability. According to the device, through the arrangement of the reinforcing mechanism, a reinforcing spring in a compressed state can push an inserting block to be inserted into a limiting opening formed in a sealing bolt, the sealing bolt is limited, the device is not prone to loosening in the mine working process, good stability is achieved, the sealing performance of the device is also improved, and the service life of the device is prolonged. The possibility of liquid leakage in the pressure regulating cavity and the distribution cavity is reduced, the service life of the device is further prolonged, and the practicability is enhanced.

Description

Technical Field

[0001] This invention relates to the field of control valve technology, specifically to a control valve for pneumatic loading machinery in mining and its usage method. Background Technology

[0002] The control valve is a special control valve used to operate and control the vehicle's transmission. One side is connected to the transmission, and the other side is connected to the vehicle's gear shift lever to operate the valve body and control the transmission.

[0003] According to the patent application CN 114412863A, "This invention relates to the field of mining machinery technology and discloses a control valve for pneumatic loading machinery in mining, including a control valve body. A shift valve, a shut-off valve, and a pressure regulating valve are fixedly installed in the middle of the control valve body. The shift valve is located above the shut-off valve, and the pressure regulating valve is located below the shut-off valve. This invention replaces the original use of steel balls and springs with a structure consisting of a locking block, a second fixing block, a first fixing block, a first slider, and a first limiting spring. This device can lock and limit the original gear position, and can use the first fixing block to lock it. When it is necessary to engage a gear, it is pressed to slide the gear into the next gear slot and then lock it. The first limiting spring can automatically reset it. Compared with the existing use of steel balls and springs, this invention effectively improves the stability of its use, ensures that the vehicle will not slip during gear engagement, and ensures the safety of its use."

[0004] Based on the above, the inventor believes that the following defects exist: This pneumatic loading machinery control valve for mining solves the problem of shut-off valves failing to rebound during use, ensuring operational safety. However, common control valves often use sealing bolts to seal the cavity, which may loosen during use, leading to leakage of lubricating oil and other liquids inside the cavity. This can cause the device to malfunction and cause inconvenience to workers. Therefore, it is necessary to design a more practical and stable pneumatic loading machinery control valve and its operating method. Summary of the Invention

[0005] The purpose of this invention is to provide a control valve for pneumatic loading machinery in mining and its usage method, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a control valve for pneumatic loading machinery in mining, including a support frame, wherein a pressure regulating chamber, a brake chamber and a distribution chamber are respectively opened on the front of the support frame, and a control mechanism is provided inside the pressure regulating chamber, the brake chamber and the distribution chamber, a reinforcement mechanism is provided on the outside of the support frame, and a limit mechanism is provided at the top and bottom of the support frame.

[0007] The reinforcement mechanism includes a fixed box fixedly connected to the outside of the support frame. A spring is reinforced on the inner wall of the fixed box. A connecting plate is fixedly connected to the end of the reinforcing spring away from the inner wall of the fixed box. A connecting shaft is sleeved on the inner ring of the reinforcing spring. A support shaft is fixedly connected to one side of the connecting plate. A movable plate is fixedly connected to the end of the support shaft away from the connecting plate. A rotating shaft is fixedly connected to one side of the movable plate. A rotating shaft is fixedly connected to the end of the rotating shaft away from the movable plate. A misalignment plate is rotatably connected to the outer wall of the rotating shaft. A fixed block is fixedly connected to one side of the fixed box. A long plate is fixedly connected to the end of the connecting shaft away from the connecting plate. An insert block is fixedly connected to the side of the long plate near the fixed box. A push block is fixedly connected to one side of the long plate. A push shaft is fixedly connected inside the push block.

[0008] According to the above technical solution, the connecting plate is slidably connected to the inner wall of the fixed box. The connecting plate has a sliding hole inside. The connecting plate is slidably connected to the outer wall of the connecting shaft through the sliding hole. During the movement of the connecting plate, it can be limited so that it can slide stably to compress the reinforcing spring, thereby further achieving the purpose of reinforcing the mechanism.

[0009] According to the above technical solution, a slot matching the support shaft is opened on one side of the fixed box. The support shaft passes through the slot and passes through one side of the fixed box. Under the action of the support shaft and the moving plate, when the misaligned plate cannot move, the connecting plate can be immobilized, thereby improving the convenience of operation during the reinforcement process.

[0010] According to the above technical solution, the fixed block has a misalignment opening inside, and the size of the misalignment plate is smaller than the size of the misalignment opening. Under the action of the misalignment opening, the misalignment plate is limited, so that the insert block will not be pushed by the elastic action of the reinforcing spring, making it convenient for workers to operate and use the sealing bolt.

[0011] According to the above technical solution, a through hole matching the connecting shaft is provided on one side of the fixed box. The connecting shaft passes through the through hole to one side of the fixed box, thereby allowing the connecting shaft to move stably through the through hole. At the same time, the long plate is pushed to reset under the elastic action of the reinforcing spring.

[0012] According to the above technical solution, the limiting mechanism includes a limiting block, which is disposed on the outside of the support frame. A threaded shaft is rotatably connected to one side of the limiting block, and sliders are fixedly connected to both sides of the limiting block. A handwheel is fixedly connected to the end of the threaded shaft away from the limiting block. A support plate is provided on the outer wall of the threaded shaft, and an installation block is fixedly connected to the outside of the support plate. A fixing groove is fixedly connected to one side of the support plate. Under the action of the limiting block, the support frame can be clamped and limited, thereby preventing the device from easily loosening during operation and enhancing the stability of the device.

[0013] According to the above technical solution, there are two limiting blocks. One side of each limiting block is in close contact with the outer side of the support frame. A connecting hole is opened inside the support plate. The threaded shaft is threadedly connected to the inside of the support plate through the connecting hole. The slider is slidably connected to the inner wall of the fixed groove. The threaded shaft can be rotated by shaking the handwheel, so that the rotation of the threaded shaft can push the limiting block to move, thereby achieving the purpose of reinforcement and facilitating operation by the staff.

[0014] According to the above technical solution, the control mechanism includes a pressure reducing valve rod, which is slidably connected to the inner wall of the pressure regulating chamber. A first pressure regulating spring is sleeved on one end of the pressure reducing valve rod, and a second pressure regulating spring is sleeved on the outer ring of the first pressure regulating spring. The second pressure regulating spring is provided with a balance slide column. A sealing bolt is threaded to the outer side of the support frame. A return spring is provided on the inner wall of the brake chamber. A brake valve rod is sleeved on one end of the return spring. An air cut-off brake assembly is threaded to the right end of the brake valve rod. A distribution rod is provided inside the distribution chamber. The pressure of liquid or gas can be effectively controlled through the mutual cooperation of the pressure reducing valve rod, the first pressure regulating spring, the second pressure regulating spring, and the balance slide column.

[0015] According to the above technical solution, the sealing bolt is threaded to the outside of the support frame, the insert is inserted into one side of the sealing bolt, one end of the return spring contacts the inner wall of the brake chamber, and the brake valve rod is inserted into the inner wall of the brake chamber. Under the action of the air brake assembly, the brake valve rod and the return spring, when a hydraulic or pneumatic system failure or sudden power failure is detected during the operation of machinery or equipment, the air brake assembly can quickly cut off the air source to prevent the power transmission device from going out of control and serious accidents from occurring.

[0016] A method for using a control valve for pneumatic loading machinery in mining includes the following steps: S2, Device Assembly First, during the assembly of the control mechanism, the reinforcing spring allows the insert block to be inserted into one side of the sealing bolt, thereby achieving the purpose of tightening and sealing the bolt and preventing it from easily loosening. Furthermore, the limiting block enhances the stability of the support frame during use, preventing it from easily loosening, thus achieving the overall assembly of the device.

[0017] S1, Loader Movement To start the loading machine, the air compressor transmits air pressure to the pneumatic valves, cylinders, and control valves. The operator presses the start button on the air compressor to begin operation, opens the air outlet of the air tank to transmit air pressure to the pneumatic devices, reduces the cylinder pressure to its minimum, and then pulls the control valve handle to the "forward" position to initiate the loading machine's movement. Alternatively, the operator pulls the handle on the pneumatic control valve to the "forward" position to control the flow of compressed air into the cylinders, thus enabling the loading machine to move forward.

[0018] S3, Operation and Execution The pressure of liquids or gases can be effectively controlled through the coordinated action of the pressure reducing valve stem, the first pressure adjusting spring, the second pressure adjusting spring, and the balance slide. Through the action of the air-stop brake assembly, the brake valve stem, and the return spring, in the event of a hydraulic or pneumatic system malfunction or sudden power failure during machinery or equipment operation, the air-stop brake assembly can quickly cut off the air source, preventing runaway power transmission devices and serious accidents. It can also quickly and reliably cut off the air source, avoiding uncontrolled movement of the device and protecting the safety of equipment and personnel. Under the action of the distribution rod, one inlet fluid or gas can be distributed to multiple different outlets, or different inlets can be introduced into one outlet. In this way, flow control and transfer can be effectively achieved. Furthermore, the distribution rod is simple to use, has a clear structure, and easily achieves stable and reliable liquid or gas control.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. This invention, by incorporating a reinforcement mechanism, allows for reinforcement of the sealing bolts. First, by pushing the push shaft, the connecting plate moves the long plate away from the fixed box via the push block. This allows the long plate to pull the connecting plate via the functional connecting shaft. During this movement, the connecting plate compresses the reinforcement spring. Simultaneously, the movement of the long plate also moves the insert block. Furthermore, the compression of the reinforcement spring by the connecting plate is facilitated by the support shaft, moving plate, rotating shaft, and misalignment plate. Once the misalignment plate has completely penetrated the fixed block, a 90-degree rotation of the misalignment plate causes it to shift away from the fixed block, thus limiting its movement. Furthermore, the insert block will not be ejected by the elastic force of the reinforcing spring, thus preventing it from moving. Next, the operator can assemble the control mechanism. After the sealing bolt is assembled, the misalignment plate can be rotated 90 degrees, allowing it to move via the functional fixing block. This compresses the reinforcing spring, which pushes the insert block into the limiting port of the sealing bolt, thus limiting the sealing bolt. This prevents the device from easily loosening during mining operations, achieving good stability and improving the device's sealing performance. It also reduces the possibility of liquid leakage inside the pressure regulating chamber and distribution chamber, further extending the device's service life and enhancing its practicality.

[0020] 2. This invention, by setting a limiting mechanism, installs the limiting mechanism in a suitable position through the mounting holes in the mounting block. Then, by turning the handwheel, the rotational motion of the threaded shaft is converted into the linear motion of the limiting block, thereby enabling the limiting block to move closer to the support frame and clamp and limit the support frame. This effectively reduces the swaying and deviation of the support frame when the mining loader shakes during operation, thus enabling the device to move stably and further improving the stability of the device. The handwheel also further enhances the convenience of operation.

[0021] 3. This invention, through the provision of a control mechanism, effectively controls the pressure of liquids or gases through the coordinated action of a pressure-reducing valve rod, a first pressure-adjusting spring, a second pressure-adjusting spring, and a balance slide. Under the action of the air-stop brake assembly, brake valve rod, and return spring, in the event of a hydraulic or pneumatic system malfunction or sudden power failure during mechanical or equipment operation, the air-stop brake assembly can quickly cut off the gas source, preventing runaway power transmission devices and serious accidents. It can also quickly and reliably cut off the gas source, avoiding uncontrolled movement of the device and protecting the safety of equipment and personnel. Under the action of the distribution rod, one inlet fluid or gas can be distributed to multiple different outlets, or different inlets can be introduced into one outlet. In this way, flow control and transfer can be effectively achieved. Furthermore, the distribution rod is simple to use, has a clear structure, and easily achieves stable and reliable liquid or gas control. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a front view of the structure of the present invention; Figure 2 This is a bottom view of the structure of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a structural diagram of the fixed box. Figure 5 This is a schematic diagram of part of the reinforcement machine structure; Figure 6 This is a structural diagram of the limiting mechanism; In the diagram: 1. Pressure regulating chamber; 2. Brake chamber; 3. Distribution chamber; 4. Reinforcing mechanism; 41. Fixing box; 42. Reinforcing spring; 43. Connecting shaft; 44. Connecting plate; 45. Support shaft; 46. Moving plate; 47. Rotating shaft; 48. Misalignment plate; 49. Fixing block; 401. Long plate; 402. Push block; 403. Insertion block; 404. Push shaft; 5. Limiting mechanism; 51. Limiting block; 52. Threaded shaft; 53. Slider; 54. Support plate; 55. Handwheel; 56. Fixing groove; 57. Mounting block; 6. Control mechanism; 61. Pressure reducing valve rod; 62. First pressure regulating spring; 63. Second pressure regulating spring; 64. Balance slide column; 65. Sealing bolt; 66. Air brake assembly; 67. Brake valve rod; 68. Return spring; 69. Distribution rod; 7. Support frame. Detailed Implementation

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

[0024] This invention provides the following technical solutions: Example 1

[0025] Combination Figures 1 to 6 A control valve for a pneumatic loading machine in a mine includes a support frame 7. The front of the support frame 7 is provided with a pressure regulating chamber 1, a brake chamber 2 and a distribution chamber 3. Each of the pressure regulating chamber 1, brake chamber 2 and distribution chamber 3 is provided with a control mechanism 6. The outside of the support frame 7 is provided with a reinforcement mechanism 4. The top and bottom of the support frame 7 are provided with limit mechanisms 5.

[0026] The reinforcement mechanism 4 includes a fixed box 41, which is fixedly connected to the outside of the support frame 7. A reinforcement spring 42 is reinforced on the inner wall of the fixed box 41. A connecting plate 44 is fixedly connected to the end of the reinforcement spring 42 away from the inner wall of the fixed box 41. A connecting shaft 43 is sleeved on the inner ring of the reinforcement spring 42. A support shaft 45 is fixedly connected to one side of the connecting plate 44. A moving plate 46 is fixedly connected to the end of the support shaft 45 away from the connecting plate 44. A rotating shaft 47 is fixedly connected to one side of the moving plate 46. A rotating shaft 47 is fixedly connected to the end of the rotating shaft 47 away from the moving plate 46. A misalignment plate 48 is rotatably connected to the outer wall of the rotating shaft 47. A fixing block 49 is fixedly connected to one side of the fixed box 41. A long plate 401 is fixedly connected to the end of the connecting shaft 43 away from the connecting plate 44. An insert block 403 is fixedly connected to the side of the long plate 401 near the fixed box 41. A push block 402 is fixedly connected to one side of the long plate 401. A push shaft 404 is fixedly connected inside the push block 402.

[0027] Furthermore, the connecting plate 44 is slidably connected to the inner wall of the fixed box 41. The connecting plate 44 has a sliding hole inside. The connecting plate 44 is slidably connected to the outer wall of the connecting shaft 43 through the sliding hole. During the movement of the connecting plate 44, it can be limited so that it can slide stably to compress the reinforcing spring 42, thereby further achieving the purpose of reinforcing the mechanism.

[0028] Furthermore, a slot matching the support shaft 45 is provided on one side of the fixed box 41. The support shaft 45 passes through the slot and passes through one side of the fixed box 41. Under the action of the support shaft 45 and the moving plate 46, when the misaligned plate 48 cannot move, the connecting plate 44 can be immobilized, thereby improving the convenience of operation during the reinforcement process.

[0029] Furthermore, the fixing block 49 has a misalignment opening inside, and the size of the misalignment plate 48 is smaller than the size of the misalignment opening. Under the action of the misalignment opening, the misalignment plate 48 is limited, so that the insert block 403 will not be pushed by the elastic action of the reinforcing spring 42, making it convenient for the staff to operate and use the sealing bolt 65.

[0030] Furthermore, a through hole matching the connecting shaft 43 is provided on one side of the fixed box 41. The connecting shaft 43 passes through the through hole and passes through one side of the fixed box 41, thereby allowing the connecting shaft 43 to move stably through the through hole. At the same time, under the elastic action of the reinforcing spring 42, the long plate 401 is pushed to reset. Example 2

[0031] See Figures 1 to 6Furthermore, based on Embodiment 1, the limiting mechanism 5 further includes a limiting block 51, which is disposed on the outside of the support frame 7. A threaded shaft 52 is rotatably connected to one side of the limiting block 51, and sliders 53 are fixedly connected to both sides of the limiting block 51. A handwheel 55 is fixedly connected to the end of the threaded shaft 52 away from the limiting block 51. A support plate 54 is provided on the outer wall of the threaded shaft 52, and an installation block 57 is fixedly connected to the outside of the support plate 54. A fixing groove 56 is fixedly connected to one side of the support plate 54. Under the action of the limiting block 51, the support frame 7 can be clamped and limited, thereby preventing the device from easily loosening during operation and enhancing the stability of the device.

[0032] Furthermore, there are two limit blocks 51. One side of each limit block 51 is in close contact with the outer side of the support frame 7. The support plate 54 has a connecting hole. The threaded shaft 52 is threadedly connected to the inside of the support plate 54 through the connecting hole. The slider 53 is slidably connected to the inner wall of the fixing groove 56. The threaded shaft 52 can be rotated by shaking the handwheel 55. The rotation of the threaded shaft 52 can push the limit block 51 to move, thereby achieving the purpose of reinforcement and making it convenient for operators to use. Example 3

[0033] See Figures 1 to 6 Based on Embodiments 1 and 2, the control mechanism 6 further includes a pressure reducing valve rod 61, which is slidably connected to the inner wall of the pressure regulating chamber 1. A first pressure regulating spring 62 is sleeved on one end of the pressure reducing valve rod 61, and a second pressure regulating spring 63 is sleeved on the outer ring of the first pressure regulating spring 62. A balance slide 64 is provided at the right end of the second pressure regulating spring 63. A sealing bolt 65 is threadedly connected to the outer side of the support frame 7. A return spring 68 is provided on the inner wall of the brake chamber 2. A brake valve rod 67 is sleeved on one end of the return spring 68, and an air cut-off brake assembly 66 is threadedly connected to the right end of the brake valve rod 67. A distribution rod 69 is provided inside the distribution chamber 3. The pressure of liquid or gas can be effectively controlled through the mutual cooperation of the pressure reducing valve rod 61, the first pressure regulating spring 62, the second pressure regulating spring 63, and the balance slide 64.

[0034] Furthermore, the sealing bolt 65 is threaded onto the outside of the support frame 7, the insert block 403 is inserted into one side of the sealing bolt 65, one end of the return spring 68 contacts the inner wall of the brake chamber 2, and the brake valve rod 67 is inserted into the inner wall of the brake chamber 2. Under the action of the air brake assembly 66, the brake valve rod 67 and the return spring 68, when a hydraulic or pneumatic system failure or sudden power failure is detected during the operation of machinery or equipment, the air brake assembly 66 can quickly cut off the air source to prevent the power transmission device from going out of control and serious accidents from occurring.

[0035] A method for using a control valve for pneumatic loading machinery in mining includes the following steps: S1, Device Assembly First, during the assembly of the control mechanism 6, the reinforcing spring 42 allows the insert 403 to be inserted into one side of the sealing bolt 65, thereby enabling the sealing bolt 65 to achieve the purpose of tightening and sealing, preventing the sealing bolt 65 from easily loosening. Furthermore, the limiting block 51 enhances the stability of the support frame 7 during use, preventing it from easily loosening, thus achieving the overall assembly of the device.

[0036] S2, Loader Movement To start the loading machine, the air compressor transmits air pressure to the pneumatic valves, cylinders, and control valves. The operator presses the start button on the air compressor to begin operation, opens the air outlet of the air tank to transmit air pressure to the pneumatic devices, reduces the cylinder pressure to its minimum, and then pulls the control valve handle to the "forward" position to initiate the loading machine's movement. Alternatively, the operator pulls the handle on the pneumatic control valve to the "forward" position to control the flow of compressed air into the cylinders, thus enabling the loading machine to move forward.

[0037] S3, Operation and Execution The pressure of liquid or gas can be effectively controlled through the coordinated action of the pressure reducing valve rod 61, the first pressure adjusting spring 62, the second pressure adjusting spring 63, and the balance slide 64. Under the action of the air cut-off brake assembly 66, the brake valve rod 67, and the return spring 68, when a hydraulic or pneumatic system malfunction or sudden power failure is detected during the operation of machinery or equipment, the air cut-off brake assembly 66 can quickly cut off the air source, preventing the power transmission device from going out of control and serious accidents. It can also quickly and reliably cut off the air source, avoiding uncontrolled movement of the device and protecting the safety of equipment and personnel. Under the action of the distribution rod 69, one inlet fluid or gas can be distributed to multiple different outlets, or different inlets can be introduced into one outlet. In this way, flow control and transfer can be effectively achieved. Furthermore, the distribution rod 69 is simple to use, has a clear structure, and easily achieves stable and reliable liquid or gas control.

[0038] In actual operation, when this device is used, the operator can first install the device in a suitable position, and then install the limiting mechanism 5 in a suitable position through the mounting hole opened in the mounting block 57. Then, by turning the handwheel 55, the handwheel 55 can drive the threaded shaft 52 to rotate. At the same time, under the mutual sliding limiting action of the slider 53 and the fixing groove 56, the rotational motion of the threaded shaft 52 can be converted into the linear motion of the limiting block 51. Thus, the limiting block 51 can move towards the support frame 7 to clamp and limit the support frame 7. In this way, when the mining loader shakes during operation, it can effectively reduce the shaking and deviation of the support frame 7, so that the device can move stably and further improve the stability of the device. The handwheel 55 can further improve the convenience of operation. During operation, the pressure of liquids or gases can be effectively controlled through the coordinated action of the pressure reducing valve stem 61, the first pressure adjusting spring 62, the second pressure adjusting spring 63, and the balance slide 64. Through the action of the air cut-off brake assembly 66, the brake valve stem 67, and the return spring 68, in the event of a hydraulic or pneumatic system malfunction or sudden power failure during machinery or equipment operation, the air cut-off brake assembly 66 can quickly cut off the gas supply, preventing runaway power transmission devices and serious accidents. It can also quickly and reliably cut off the gas supply, avoiding uncontrolled movement of the device and protecting the safety of equipment and personnel. Under the action of the distribution rod 69, one inlet fluid or gas can be distributed to multiple different outlets, or different inlets can be directed to one outlet. In this way, flow control and transfer can be effectively achieved, and the distribution rod 69 is simple to use, has a clear structure, and easily achieves stable and reliable liquid or gas control.

[0039] When the sealing bolt 65 needs to be reinforced, the push shaft 404 is first moved, causing the connecting plate 44 to move the long plate 401 away from the fixed box 41 via the push block 402. This allows the long plate 401 to pull the connecting plate 44 via the functional connecting shaft 43. During this movement, the connecting plate 44 compresses the reinforcing spring 42. Simultaneously, the movement of the long plate 401 also moves the insert block 403. Furthermore, during the compression of the reinforcing spring 42, the connecting plate 44 moves via the support shaft 45, the moving plate 46, the rotating shaft 47, and the misalignment plate 48. Once the misalignment plate 48 has completely penetrated the fixed block 49, a 90-degree rotation of the misalignment plate 48 causes it to be misaligned with the fixed block 49, thus achieving the desired misalignment. Plate 48 is positioned so that the insert block 403 will not be ejected by the elastic force of the reinforcing spring 42, thus preventing the insert block 403 from moving. Next, the operator can assemble the control mechanism 6. After the sealing bolt 65 is assembled, the misalignment plate 48 can be rotated 90 degrees, allowing it to move via the functional fixing block 49. The reinforcing spring 42, under compression, can then push the insert block 403 into the limiting port of the sealing bolt 65, thus limiting the sealing bolt 65. This prevents the device from easily loosening during mining operations, achieving good stability and improving the device's sealing performance. It also reduces the possibility of liquid leakage inside the pressure regulating chamber 1 and the distribution chamber 3, further extending the device's service life and enhancing its practicality.

[0040] 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.

[0041] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A control valve for pneumatic loading machinery in mining, comprising a support frame (7), characterized in that: The front of the support frame (7) is provided with a pressure regulating chamber (1), a brake chamber (2) and a distribution chamber (3). The pressure regulating chamber (1), the brake chamber (2) and the distribution chamber (3) are all provided with a control mechanism (6). The outside of the support frame (7) is provided with a reinforcement mechanism (4). The top and bottom of the support frame (7) are provided with a limit mechanism (5). The reinforcing mechanism (4) includes a fixed box (41) fixedly connected to the outside of the support frame (7). The inner wall of the fixed box (41) is reinforced with a spring (42). A connecting plate (44) is fixedly connected to one end of the reinforcing spring (42) away from the inner wall of the fixed box (41). A connecting shaft (43) is sleeved on the inner ring of the reinforcing spring (42). A support shaft (45) is fixedly connected to one side of the connecting plate (44). A moving plate (46) is fixedly connected to one end of the support shaft (45) away from the connecting plate (44). A rotating shaft (47) is fixedly connected to one side of the moving plate (46). The rotating shaft (47) is fixedly connected to one end away from the moving plate (46). The outer wall of the rotating shaft (47) is rotatably connected to the misalignment plate (48). The fixed box (41) is fixedly connected to one side of the fixed block (49). The connecting shaft (43) is fixedly connected to one end away from the connecting plate (44) of the long plate (401). The long plate (401) is fixedly connected to one side of the fixed box (41) of the insert block (403). The long plate (401) is fixedly connected to one side of the push block (402). The push block (402) is fixedly connected to the inside of the push block (402).

2. The control valve for a pneumatic loading machine in a mine according to claim 1, characterized in that: The connecting plate (44) is slidably connected to the inner wall of the fixed box (41). The connecting plate (44) has a sliding hole inside and is slidably connected to the outer wall of the connecting shaft (43) through the sliding hole.

3. The control valve for a pneumatic loading machine in a mine according to claim 1, characterized in that: The fixed box (41) has a slot on one side that matches the support shaft (45), and the support shaft (45) passes through the slot on one side of the fixed box (41).

4. The control valve for a pneumatic loading machine in a mine according to claim 1, characterized in that: The fixed block (49) has a misalignment opening inside, and the size of the misalignment plate (48) is smaller than the size of the misalignment opening.

5. The control valve for a pneumatic loading machine in a mine according to claim 1, characterized in that: The fixed box (41) has a through hole on one side that matches the connecting shaft (43), and the connecting shaft (43) passes through the through hole to one side of the fixed box (41).

6. The control valve for a pneumatic loading machine in a mine according to claim 1, characterized in that: The limiting mechanism (5) includes a limiting block (51), which is located on the outside of the support frame (7). A threaded shaft (52) is rotatably connected to one side of the limiting block (51). Slider blocks (53) are fixedly connected to both sides of the limiting block (51). A handwheel (55) is fixedly connected to one end of the threaded shaft (52) away from the limiting block (51). A support plate (54) is provided on the outer wall of the threaded shaft (52). An installation block (57) is fixedly connected to the outside of the support plate (54). A fixing groove (56) is fixedly connected to one side of the support plate (54).

7. The control valve for a pneumatic loading machine in a mine according to claim 6, characterized in that: Two limiting blocks (51) are provided. One side of each limiting block (51) is in close contact with the outside of the support frame (7). A connecting hole is provided inside the support plate (54). The threaded shaft (52) is threadedly connected to the inside of the support plate (54) through the connecting hole. The slider (53) is slidably connected to the inner wall of the fixing groove (56).

8. The control valve for a pneumatic loading machine in a mine according to claim 1, characterized in that: The control mechanism (6) includes a pressure reducing valve rod (61), which is slidably connected to the inner wall of the pressure regulating chamber (1). A first pressure regulating spring (62) is sleeved on one end of the pressure reducing valve rod (61), and a second pressure regulating spring (63) is sleeved on the outer ring of the first pressure regulating spring (62). A balance slide column (64) is provided on the right end of the second pressure regulating spring (63). A sealing bolt (65) is threaded on the outer side of the support frame (7). A reset spring (68) is provided on the inner wall of the brake chamber (2). A brake valve rod (67) is sleeved on one end of the reset spring (68), and an air cut-off brake assembly (66) is threaded on the right end of the brake valve rod (67). A distribution rod (69) is provided inside the distribution chamber (3).

9. A control valve for pneumatic loading machinery in mining according to claim 8, characterized in that: The sealing bolt (65) is threaded to the outside of the support frame (7), the insert (403) is inserted into one side of the sealing bolt (65), one end of the reset spring (68) is in contact with the inner wall of the brake chamber (2), and the brake valve rod (67) is inserted into the inner wall of the brake chamber (2).

10. The method of using a control valve for a pneumatic loading machine in a mine according to claim 1, characterized in that: Includes the following steps: S1, Device Assembly First, during the assembly of the control mechanism (6), the reinforcing spring (42) allows the insert (403) to be inserted into one side of the sealing bolt (65), so that the sealing bolt (65) can achieve the purpose of tightening and sealing, so that the sealing bolt (65) will not easily loosen. Furthermore, the limiting block (51) can enhance the stability of the support frame (7) during use, so that it will not easily loosen, thus achieving the overall assembly of the device. S2, Loader Movement To start the loading machine, the air compressor transmits air pressure to the pneumatic valves, cylinders, and control valves. The operator presses the start button on the air compressor to begin operation, opens the air outlet of the air tank to transmit air pressure to the pneumatic devices, reduces the cylinder pressure to its minimum, and pulls the control valve handle to the "forward" position to initiate the loading machine's movement. Alternatively, the operator pulls the handle on the pneumatic control valve to the "forward" position to control the flow of compressed air into the cylinders, thus enabling the loading machine to move forward. S3, Operation and Execution The pressure of liquid or gas can be effectively controlled by the cooperation of the pressure reducing valve rod (61), the first pressure adjusting spring (62), the second pressure adjusting spring (63) and the balance slide (64). Under the action of the air cut-off brake assembly (66), the brake valve rod (67) and the return spring (68), when a hydraulic or pneumatic system failure or sudden power failure is found during the operation of machinery or equipment, the air cut-off brake assembly (66) can quickly cut off the air source to prevent the power transmission device from going out of control and serious accidents. It can also quickly and reliably cut off the air source to avoid the device from going out of control and protect the safety of equipment and personnel. Under the action of the distribution rod (69), one inlet fluid or gas can be distributed to multiple different outlets, or different inlets can be introduced into one outlet. In this way, flow control and transfer can be effectively realized. The distribution rod (69) is simple to use, has a clear structure, and can easily achieve stable and reliable liquid or gas control.

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