A pneumatic control handle

Abstract

The present invention provides a pneumatic control handle, which includes a guide member, a valve body, a rising valve, a falling valve and a movable member. The guide member is fixedly clamped in the valve body. A first receiving groove and a second receiving groove are provided in the valve body. An air source port, a rising air outlet and a falling air outlet are provided on the valve body. The air source port is respectively communicated with the rising air outlet and the falling air outlet through the first receiving groove and the second receiving groove. The rising valve is arranged in the first receiving groove, and the falling valve is arranged in the second receiving groove. Both the rising valve and the falling valve include at least one movable part. The movable member is arranged on the guide member and drives the rising valve and the falling valve to work through the movable part. By providing the rising valve, the falling valve and the movable member, the control method of the air path in the valve body is changed. When in use, the rising valve and the falling valve work, avoiding the simultaneous air intake at the two air intake ends of the pneumatic lifting device and ensuring the normal use of the pneumatic lifting device.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting control devices, and particularly to a pneumatic control handle. Background Art

[0002] At present, common pneumatic lifting devices on the market, such as pneumatic hoists and pneumatic balance cranes, their lifting actions are all completed by an external lifting control handle. Most of the existing lifting control handles adopt a two-position three-way valve body. The two-position three-way valve body includes an air inlet hole, a rising air outlet hole, and a descending air outlet hole. The air inlet hole is connected to the air source, the rising air outlet hole is connected to the air inlet end on the pneumatic lifting device to control its rising, and the descending air outlet hole is connected to the air inlet end on the lifting device to control its descending.

[0003] Chinese Patent CN214935622U discloses a control handle for a mine pneumatic hoist monorail crane, and specifically discloses a valve body. A middle accommodation stepped hole and two side accommodation stepped holes are provided inside the valve body. An air inlet hole and two air outlet holes are provided on the valve body. The air inlet hole is communicated with the middle accommodation stepped hole, and the two air outlet holes are respectively communicated with the two side accommodation stepped holes in one-to-one correspondence. An emergency button is inserted into the middle accommodation stepped hole, and air outlet buttons are inserted into both of the two side accommodation stepped holes. During use, an operator can control the corresponding air path to conduct by pressing the air outlet button, thereby realizing the control of the lifting action of the pneumatic hoist.

[0004] The above control handle has the following technical problems during use: ① Two air outlet buttons are used to respectively control the conduction of the rising air path and the descending air path inside the valve body. When the operator presses the two air outlet buttons simultaneously due to misoperation, the two air inlet ends of the pneumatic hoist will intake air simultaneously, resulting in damage to the pneumatic hoist; ② Since there is no redundant air outlet hole inside the valve body, the output mode of the air path inside the control handle is relatively single. Summary of the Invention

[0005] In view of this, the present invention proposes a pneumatic control handle, which changes the control method of the air path inside the valve body, not only avoids the simultaneous intake of air at the two air inlet ends of the pneumatic lifting device, but also solves the technical problem that the service life of the traditional pneumatic control handle is limited by the buffer spring. In addition, the pneumatic control handle of the present invention also adds a reserved air outlet branch, and there is no need to externally connect a branch air path during use, simplifying the air path design.

[0006] The technical solution of the present invention is realized as follows: The present invention provides a pneumatic control handle, including a guiding member and a valve body. The guiding member passes through the valve body and is fixedly connected to the valve body. A first accommodation groove and a second accommodation groove are provided inside the valve body. An air source port, a rising air outlet port, and a descending air outlet port are provided on the valve body. The rising air outlet port is communicated with the air source port through the first accommodation groove, and the descending air outlet port is communicated with the air source port through the second accommodation groove.

[0007] It further includes a rising valve, a falling valve and a movable member. The rising valve is arranged in the first receiving groove and is used to control the communication state between the air source port and the rising air outlet; the falling valve is arranged in the second receiving groove and is used to control the communication state between the air source port and the rising air outlet; both the rising valve and the falling valve include at least one movable part; the movable member is arranged on the guiding member and drives the rising valve or the falling valve to work through the movable part.

[0008] Based on the above technical solutions, preferably, the rising valve includes a rising movable part and a rising spring. The rising movable part is arranged in the first receiving groove. One end of the rising movable part movably passes through the first receiving groove and abuts against the top surface of the movable member, and the other end selectively blocks the air outlet end of the first receiving groove; the rising spring is arranged between the first receiving groove and the rising movable part and can be telescoped in the moving direction of the rising movable part.

[0009] The falling valve includes a falling fixed part, a falling movable part, a falling abutting part and a falling spring. The falling fixed part is of a hollow structure. The falling fixed part is arranged in the second receiving groove and is communicated with the second receiving groove. A first through hole is provided on the falling fixed part, and the first through hole is communicated with the falling air outlet; the falling movable part is arranged in the falling fixed part. One end of the falling movable part movably passes through the falling fixed part and the movable member and is fixedly connected to the falling abutting part, and the other end selectively blocks the air inlet end of the falling fixed part; the falling abutting part abuts against the bottom surface of the movable member; the falling spring is arranged between the falling fixed part and the falling movable part and can be telescoped in the moving direction of the falling movable part.

[0010] Based on the above technical solutions, preferably, a reserved air outlet is provided on the valve body, and the reserved air outlet is communicated with the air source port.

[0011] More preferably, it further includes a reserved valve. A third receiving groove is provided in the valve body, and the reserved valve is arranged in the third receiving groove and is used to control the communication state between the air source port and the reserved air outlet.

[0012] More preferably, the reserved valve includes a reserved fixed part, a reserved movable part and a reserved spring. The reserved fixed part is of a hollow structure. The reserved fixed part is arranged in the third receiving groove and is communicated with the third receiving groove. A second through hole is provided on the reserved fixed part, and the second through hole is communicated with the reserved air outlet; the reserved movable part is arranged in the reserved fixed part. One end of the reserved movable part movably passes through the reserved fixed part, and the other end selectively blocks the air inlet end of the reserved fixed part; the reserved spring is arranged between the third receiving groove and the reserved movable part and can be telescoped in the moving direction of the reserved movable part.

[0013] Based on the above technical solutions, preferably, an air flow port and a reserved air source port are provided on the guiding member. The air flow port is located inside the valve body and is communicated with the air source port; the reserved air source port movably passes through one end of the guiding member away from the valve body along the length direction, and the reserved air source port is communicated with the air flow port.

[0014] Based on the above technical solutions, preferably, a limiting member is further included. A fourth accommodation groove is provided inside the valve body. The limiting member includes at least one movable part, and the movable member drives the limiting member to work synchronously with the descending valve through the movable part.

[0015] More preferably, the limiting member includes a limiting movable part, a limiting abutting part and a limiting spring. The limiting movable part is arranged in the fourth accommodation groove. One end of the limiting movable part movably passes through the fourth accommodation groove and the movable member and is fixedly connected to the limiting abutting part, and the other end selectively abuts against the bottom wall of the fourth accommodation groove; the limiting abutting part abuts against the bottom surface of the movable member; the limiting spring is arranged between the fourth accommodation groove and the limiting movable part and can expand and contract in the moving direction of the limiting movable part.

[0016] Based on the above technical solutions, preferably, a fifth accommodation groove is provided at one end of the valve body close to the movable member, and one end of the movable member close to the movable part is located in the fifth accommodation groove.

[0017] Based on the above technical solutions, preferably, a receiving tray is further included. The receiving tray is arranged at one end of the guiding member away from the movable member. A plurality of pipeline holes are provided on the receiving tray, and the pipeline holes allow the air path pipelines to pass through.

[0018] The pneumatic control handle of the present invention has the following beneficial effects compared with the prior art:

[0019] (1) By setting the ascending valve, the descending valve and the movable member, the control method of the air path inside the valve body is changed. During use, the ascending valve and the descending valve work, avoiding the simultaneous intake of air at the two intake ends of the pneumatic lifting device and ensuring the normal use of the pneumatic lifting device;

[0020] (2) A reserved air outlet branch is additionally provided inside the valve body. During use, the operator can control the conduction of the reserved air outlet branch according to the use requirements, thereby increasing the types of air path output methods inside the pneumatic control handle;

[0021] (3) A reserved air source branch is additionally provided inside the guiding member. On the one hand, when the air source port is blocked, the operator can supply air into the valve body through the reserved air source port, ensuring the normal operation of the air path inside the valve body. On the other hand, it can avoid the air supply pipeline being caught by other objects, eliminating potential safety hazards and facilitating the use of the operator;

[0022] (4) By setting the receiving tray, the various air path pipelines are separated from the movable member, facilitating the use of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Structural schematic diagram of the pneumatic control handle of the present invention;

[0025] Figure 2 Structural schematic diagram of the pneumatic control handle with the receiving tray removed;

[0026] Figure 3 For Figure 2 Top view of the pneumatic control handle of

[0027] Figure 4 For Figure 3 Front cross-sectional schematic view of A-A in

[0028] Figure 5 For Figure 3 Front cross-sectional schematic view of B-B in

[0029] Figure 6 For Figure 3 Front cross-sectional schematic view of C-C in

[0030] Figure 7 For Figure 3 Front cross-sectional schematic view of D-D in

[0031] In the figure: 1. Guide member; 101. Air flow port; 102. Reserved air source port; 2. Valve body; 21. First receiving groove; 22. Second receiving groove; 23. Third receiving groove; 24. Fourth receiving groove; 25. Fifth receiving groove; 201. Air source port; 202. Upward air outlet; 203. Downward air outlet; 204. Reserved air outlet; 3. Upward valve; 31. Upward moving part; 32. Upward spring; 4. Downward valve; 41. Downward fixed part; 411. First through hole; 42. Downward moving part; 43. Downward abutting part; 44. Downward spring; 5. Moving part; 6. Reserved valve; 61. Reserved fixed part; 611. Second through hole; 62. Reserved moving part; 63. Reserved spring; 7. Limiting member; 71. Limiting moving part; 72. Limiting abutting part; 73. Limiting spring; 8. Receiving tray; 81. Pipeline hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] As Figures 1 to 7 shown, a pneumatic control handle of the present invention includes a guide member 1 and a valve body 2.

[0034] The guide member 1 passes through the valve body 2 and is fixedly connected to the valve body 2. Specifically, the guide member 1 is provided with an annular protrusion, and the valve body 2 is provided with an annular groove. The annular protrusion is fixedly clamped with the annular groove. Here, the material of the guide member 1 is selected as aluminum alloy with high structural strength and light weight.

[0035] The valve body 2 serves as the main body of the pneumatic control handle. The valve body 2 is provided with a first receiving groove 21 and a second receiving groove 22, and the valve body 2 is provided with a gas source port 201, a rising air outlet 202, and a descending air outlet 203.

[0036] The gas source port 201 serves as the air inlet of the valve body 2, and the rising air outlet 202 and the descending air outlet 203 serve as the air outlets of the valve body 2. The rising air outlet 202 is connected to the gas source port 201 through the first receiving groove 21, and the descending air outlet 203 is connected to the gas source port 201 through the second receiving groove 22.

[0037] During use, the gas source port 201 is connected to the gas supply unit, the rising air outlet 202 is connected to the air inlet end that controls the rising of the pneumatic lifting device, and the descending air outlet 203 is connected to the air inlet end that controls the descending of the pneumatic lifting device. The gas supply unit supplies gas into the valve body 2 through the gas source port 201. When the gas source port 201 and the rising air outlet 202 are in a connected state, the gas is discharged from the rising air outlet 202, and the air inlet end that controls the rising of the pneumatic lifting device intakes air, and the pneumatic lifting device rises; when the gas source port 201 and the descending air outlet 203 are in a connected state, the gas is discharged from the descending air outlet 203, and the air inlet end that controls the descending of the pneumatic lifting device intakes air, and the pneumatic lifting device descends.

[0038] Most of the pneumatic control handles in the prior art use buttons to control the on-off of the air circuit in the valve body 2. That is, when the operator presses the up button, the air source port 201 is connected to the up air outlet 202, and the pneumatic lifting device rises; when the operator presses the down button, the air source port 201 is connected to the down air outlet 203, and the pneumatic lifting device descends. Such a control method has the following technical problems: when the operator presses the up button and the down button simultaneously due to misoperation, both intake ends of the pneumatic lifting device will intake air simultaneously, resulting in damage to the pneumatic lifting device.

[0039] In view of this, a pneumatic control handle of the present invention further includes an up valve 3, a down valve 4 and a movable member 5. By means of the up valve 3, the down valve 4 and the movable member 5, the control method of the air circuit in the valve body 2 is changed, avoiding the simultaneous intake of air at both intake ends of the pneumatic lifting device and ensuring the normal use of the pneumatic lifting device.

[0040] The up valve 3 is arranged in the first receiving groove 21 and is used to control the connection state between the air source port 201 and the up air outlet 202. When the up valve 3 works, the air source port 201 is connected to the up air outlet 202; when the up valve 3 does not work, the air source port 201 is not connected to the up air outlet 202.

[0041] The down valve 4 is arranged in the second receiving groove 22 and is used to control the connection state between the air source port 201 and the down air outlet 203. When the down valve 4 works, the air source port 201 is connected to the down air outlet 203; when the down valve 4 does not work, the air source port 201 is not connected to the down air outlet 203.

[0042] Both the up valve 3 and the down valve 4 include at least one movable part.

[0043] The movable member 5 is arranged on the guide member 1. The movable member 5 drives the up valve 3 or the down valve 4 to work through the movable part. In use, the operator can drive the movable member 5 to move on the guide member 1. When the movable member 5 does not move, the up valve 3 does not work and the down valve 4 does not work; when the movable member 5 moves upward, the up valve 3 works and the down valve 4 does not work; when the movable member 5 moves downward, the up valve 3 does not work and the down valve 4 works.

[0044] Here provides a technical structure of the up valve 3. The up valve 3 includes an up movable part 31 and an up spring 32. The up movable part 31 is arranged in the first receiving groove 21. One end of the up movable part 31 movably passes through the first receiving groove 21 and abuts against the top surface of the movable member 5. The other end of the up movable part 31 selectively blocks the air outlet end of the first receiving groove 21; the up spring 32 is arranged between the first receiving groove 21 and the up movable part 31 and can be telescoped in the moving direction of the up movable part 31. Here, the up spring 32 is used to reset the upward moving up movable part 31.

[0045] When the movable member 5 moves upward, the rising movable portion 31 is pushed upward by the movable member 5, the air outlet end of the first receiving groove 21 is opened, the rising valve 3 works, and the air source port 201 is communicated with the rising air outlet 202; when the movable member 5 moves downward, since the rising movable portion 31 is separated from the top surface of the movable member 5, the rising movable portion 31 remains stationary. At this time, the air outlet end of the first receiving groove 21 is blocked by the rising movable portion 31, the rising valve 3 does not work, and the air source port 201 is not communicated with the rising air outlet 202.

[0046] A through hole can be provided at the top of the first receiving groove 21. During use, a plug is detachably provided at the through hole, and the plug is used to replace the top wall of the first receiving groove 21. Without affecting the normal use of the rising valve 3, the operator can adjust the moving distance of the rising movable portion 31 in the vertical direction by replacing plugs of different sizes.

[0047] Here, a technical structure of a descending valve 4 is provided. The descending valve 4 includes a descending fixed portion 41, a descending movable portion 42, a descending abutting portion 43, and a descending spring 44. The descending fixed portion 41 is a hollow structure. The descending fixed portion 41 is disposed in the second receiving groove 22 and is communicated with the second receiving groove 22. A first through hole 411 is provided on the descending fixed portion 41, and the first through hole 411 is communicated with the descending air outlet 203; the descending movable portion 42 is disposed in the descending fixed portion 41. One end of the descending movable portion 42 movably passes through the descending fixed portion 41 and the movable member 5 and is fixedly connected to the descending abutting portion 43. The other end of the descending movable portion 42 selectively blocks the air inlet end of the descending fixed portion 41; the descending abutting portion 43 abuts against the bottom surface of the movable member 5; the descending spring 44 is disposed between the descending fixed portion 41 and the descending movable portion 42 and can be telescoped in the moving direction of the descending movable portion 42. Here, the descending spring 44 is used to reset the descending movable portion 42 that moves downward.

[0048] When the movable member 5 moves upward, since the fitting relationship between the descending movable portion 42 and the movable member 5 is a clearance fit, the descending movable portion 42 remains stationary. At this time, the air inlet end of the descending fixed portion 41 is blocked by the descending movable portion 42, the descending valve 4 does not work, and the air source port 201 is not communicated with the descending air outlet 203; when the movable member 5 moves downward, due to the presence of the descending abutting portion 43, the descending movable portion 42 is pushed downward by the movable member 5, the air inlet end of the descending fixed portion 41 is opened, the descending valve 4 works, and the air source port 201 is communicated with the descending air outlet 203 through the first through hole 411.

[0049] A through hole can be opened at the top of the second receiving groove 22 here. The through hole is used to ensure the normal movement of the descending valve 4. When the descending moving part 42 moves downward, since gas enters the second receiving groove 22 at the through hole, the air pressure above the descending moving part 42 remains unchanged, and it will not affect the normal movement of the descending moving part 42.

[0050] Rubber sealing rings can be sleeved on the ascending moving part 31 and the descending moving part 42 here to ensure the airtightness of the air circuit in the valve body 2 and prevent gas leakage in the valve body 2.

[0051] As a preferred embodiment, a pneumatic control handle of the present invention is provided with a reserved air outlet branch in the valve body 2. Specifically, a reserved air outlet 204 is provided on the valve body 2, and the reserved air outlet 204 is connected to the air source port 201. During use, the operator can control the conduction of the reserved air outlet branch according to the use requirements, thereby increasing the types of air circuit output modes in the pneumatic control handle.

[0052] The pneumatic control handle of the present invention includes a total of five air circuit output modes: ① only the ascending air circuit is conducted; ② only the descending air circuit is conducted; ③ only the reserved air outlet branch is conducted; ④ the ascending air circuit and the reserved air outlet branch are conducted simultaneously; ⑤ the descending air circuit and the reserved air outlet branch are conducted simultaneously.

[0053] To facilitate the operator to control the conduction of the reserved air outlet branch, a pneumatic control handle of the present invention further includes a reserved valve 6. A third receiving groove 23 is provided in the valve body 2, and the reserved valve 6 is arranged in the third receiving groove 23 to control the connection state between the air source port 201 and the reserved air outlet 204. When the reserved valve 6 is in the working state, the air source port 201 is connected to the reserved air outlet 204; when the reserved valve 6 is not in the working state, the air source port 201 is not connected to the reserved air outlet 204.

[0054] A technical structure of the reserved valve 6 is provided here. The reserved valve 6 includes a reserved fixed part 61, a reserved moving part 62 and a reserved spring 63. The reserved fixed part 61 is a hollow structure. The reserved fixed part 61 is fixedly arranged in the third receiving groove 23 and is connected to the third receiving groove 23. A second through hole 611 is provided on the reserved fixed part 61, and the second through hole 611 is connected to the reserved air outlet 204; the reserved moving part 62 is arranged in the reserved fixed part 61. One end of the reserved moving part 62 movably passes through the reserved fixed part 61, and the other end of the reserved moving part 62 selectively blocks the air inlet end of the reserved fixed part 61; the reserved spring 63 is arranged between the third receiving groove 23 and the reserved moving part 62 and can be telescoped in the moving direction of the reserved moving part 62. Here, the reserved spring 63 is used to reset the reserved moving part 62 that moves inward.

[0055] When the operator presses the reserved movable part 62 inward, the air inlet end of the reserved fixed part 61 is opened, and the reserved valve 6 works, and the air source port 201 is communicated with the reserved air outlet 204; when the operator stops pressing the reserved movable part 62, the reserved movable part 62 moves outward under the drive of the reserved spring 63, and the air inlet end of the reserved fixed part 61 is blocked by the reserved movable part 62, and the reserved valve 6 does not work, and the air source port 201 is not communicated with the reserved air outlet 204.

[0056] As a preferred embodiment, a pneumatic control handle of the present invention is provided with a reserved air source branch in the guide member 1. Specifically, the guide member 1 is provided with an air flow port 101 and a reserved air source port 102. The air flow port 101 is located in the valve body 2 and is communicated with the air source port 201. The reserved air source port 102 movably passes through one end of the guide member 1 away from the valve body 2 along the length direction. The reserved air source port 102 is communicated with the air flow port 101. In use, the operator can block the air source port 201 on the valve body 2 and communicate the reserved air source port 102 on the guide member 1 with the air supply unit, and the air supply unit supplies air into the valve body 2 through the reserved air source port 102.

[0057] There are two purposes for adding the reserved air source branch in the guide member 1 here: ① When the air source port 201 on the valve body 2 is blocked and air intake is impossible, the operator can supply air into the valve body 2 through the reserved air source port 102 on the guide member 1, so as to ensure the normal operation of the air circuit in the valve body 2; ② When the air supply unit is arranged close to the guide member 1, if the air supply unit is communicated with the air source port 201 on the valve body 2, then the air supply pipeline of the air supply unit needs to bypass the guide member 1, which is not only inconvenient for the operator to use, but also easy to hang and catch other objects, posing a safety hazard.

[0058] As a preferred embodiment, a pneumatic control handle of the present invention further includes a limiting member 7. A fourth receiving groove 24 is provided in the valve body 2. The limiting member 7 includes at least one movable part. The movable member 5 drives the limiting member 7 to work synchronously with the lowering valve 4 through the movable part. The limiting member 7 is used to limit the moving distance of the movable part of the lowering valve 4. Specifically, in order to ensure the use reliability of the limiting member 7, the number of the fourth receiving grooves 24 is two, and one limiting member 7 is provided in each fourth receiving groove 24.

[0059] A technical structure of a limiting member 7 is provided here. The limiting member 7 includes a limiting movable part 71, a limiting abutting part 72, and a limiting spring 73. The limiting movable part 71 is arranged in the fourth receiving groove 24. One end of the limiting movable part 71 passes through the fourth receiving groove 24 and the movable part 5 and is fixedly connected to the limiting abutting part 72. The other end of the limiting movable part 71 selectively abuts against the bottom wall of the fourth receiving groove 24. The limiting abutting part 72 abuts against the bottom surface of the movable part 5. The limiting spring 73 is arranged between the fourth receiving groove 24 and the limiting movable part 71 and can expand and contract in the moving direction of the limiting movable part 71. Here, the limiting spring 73 is used to reset the limiting movable part 71 moving downward.

[0060] When the movable part 5 moves upward, due to the clearance fit between the limiting movable part 71 and the movable part 5, the limiting movable part 71 remains stationary and the limiting member 7 does not work. When the movable part 5 moves downward, due to the existence of the limiting abutting part 72, the limiting movable part 71 will be pushed downward by the movable part 5 until the limiting movable part 71 abuts against the bottom wall of the fourth receiving groove 24.

[0061] To ensure the normal movement of the limiting member 7, no airtight treatment is performed between the limiting member 7 and the fourth receiving groove 24, that is, there is an air flow gap between the limiting movable part 71 and the side wall of the fourth receiving groove 24. The air flow gap is used to ensure the air pressure balance in the fourth receiving groove 24.

[0062] A through hole can be opened at the top of the fourth receiving groove 24. During use, a plug is detachably arranged at the through hole. The plug is used to replace the top wall of the fourth receiving groove 24 without affecting the normal use of the limiting member 7.

[0063] In addition, to prevent the control end of the movable part 5 from being damaged due to collision during use, a hidden structure design is made for the control end of the movable part 5. Specifically, a fifth receiving groove 25 is provided at one end of the valve body 2 close to the movable part 5. One end of the movable part 5 close to the rising movable part 31, the descending movable part 42, and the limiting movable part 71 is located in the fifth receiving groove 25. During use, due to the existence of the limiting member 7, the control end of the movable part 5 always moves within the fifth receiving groove 25.

[0064] As a preferred embodiment, a pneumatic control handle of the present invention further includes a receiving disc 8. The receiving disc 8 is arranged at one end of the guiding member 1 away from the movable part 5. A plurality of pipeline holes 81 are provided on the receiving disc 8 for air pipeline lines to pass through. Specifically, the number of the pipeline holes 81 is four, and the four pipeline holes 81 respectively correspond to the air source port 201, the rising air outlet 202, the descending air outlet 203, and the reserved air outlet 204 on the valve body 2 one by one.

[0065] The receiving tray 8 is mainly used to receive the gas supply pipeline, the upward gas outlet pipeline, the downward gas outlet pipeline, and the reserved gas outlet pipeline that are respectively connected to the gas source port 201, the upward gas outlet 202, the downward gas outlet 203, and the reserved gas outlet 204, and separate each gas pipeline from the moving part 5, so as to facilitate the operation of the operator.

[0066] Working principle: As Figures 1 to 7 shown, the operator fixes the valve body 2 with one hand and drives the moving part 5 to move with the other hand. When the moving part 5 moves upward, the upward valve 3 works and the downward valve 4 does not work. At this time, the gas source port 201 is connected to the upward gas outlet 202, and the intake end that controls its upward movement on the pneumatic lifting device intakes air, and the pneumatic lifting device rises; when the moving part 5 moves downward, the upward valve 3 does not work and the downward valve 4 works. At this time, the gas source port 201 is connected to the downward gas outlet 203, and the intake end that controls its downward movement on the pneumatic lifting device intakes air, and the pneumatic lifting device descends.

[0067] When the operator needs to operate the pneumatic control handle with one hand, lifting rings can be provided at both ends of the guiding member 1, and the pneumatic control handle can be hung on the pneumatic lifting device or other devices through the lifting rings for use. Here, the lifting rings can be replaced with screws or other components that are convenient for disassembly and connection.

[0068] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pneumatic control handle, comprising a guide member (1) and a valve body (2), wherein, The guide member (1) passes through the valve body (2) and is fixedly connected to the valve body (2); A first accommodation groove (21) and a second accommodation groove (22) are provided in the valve body (2). An air source port (201), a rising air outlet (202) and a descending air outlet (203) are provided on the valve body (2), wherein, The rising air outlet (202) is communicated with the air source port (201) through the first accommodation groove (21); The descending air outlet (203) is communicated with the air source port (201) through the second accommodation groove (22); It is characterized in that: it further comprises a rising valve (3), a descending valve (4) and a movable member (5), wherein, The rising valve (3) is arranged in the first accommodation groove (21) and is used to control the communication state between the air source port (201) and the rising air outlet (202); The descending valve (4) is arranged in the second accommodation groove (22) and is used to control the communication state between the air source port (201) and the rising air outlet (202); Both the rising valve (3) and the descending valve (4) include at least one movable part; The movable member (5) is arranged on the guide member (1) and drives the rising valve (3) or the descending valve (4) to work through the movable part; The rising valve (3) includes a rising movable part (31) and a rising spring (32), wherein, The rising movable part (31) is arranged in the first accommodation groove (21). One end of the rising movable part (31) movably passes through the first accommodation groove (21) and abuts against the top surface of the movable member (5), and the other end selectively blocks the air outlet end of the first accommodation groove (21); The rising spring (32) is arranged between the first accommodation groove (21) and the rising movable part (31) and can expand and contract in the movement direction of the rising movable part (31); The descending valve (4) includes a descending fixed part (41), a descending movable part (42), a descending abutting part (43) and a descending spring (44), wherein, The descending fixed part (41) is of a hollow structure. The descending fixed part (41) is arranged in the second accommodation groove (22) and is communicated with the second accommodation groove (22). A first through hole (411) is provided on the descending fixed part (41), and the first through hole (411) is communicated with the descending air outlet (203); The descending movable part (42) is arranged in the descending fixed part (41). One end of the descending movable part (42) movably passes through the descending fixed part (41) and the movable member (5) and is fixedly connected to the descending abutting part (43), and the other end selectively blocks the air inlet end of the descending fixed part (41); The descending abutting part (43) abuts against the bottom surface of the movable member (5); The descending spring (44) is arranged between the descending fixed part (41) and the descending movable part (42) and can expand and contract in the movement direction of the descending movable part (42); It further comprises a limiting member (7). A fourth accommodation groove (24) is provided in the valve body (2). The limiting member (7) includes at least one movable part. The movable member (5) drives the limiting member (7) to work synchronously with the descending valve (4) through the movable part.

2. The pneumatic control handle according to claim 1, characterized in that: A reserved air outlet (204) is provided on the valve body (2), and the reserved air outlet (204) is communicated with the air source port (201).

3. The pneumatic control handle according to claim 2, wherein: It further includes a reserved valve (6). A third accommodation groove (23) is provided in the valve body (2), and the reserved valve (6) is arranged in the third accommodation groove (23) and is used to control the communication state between the air source port (201) and the reserved air outlet (204).

4. The pneumatic control handle according to claim 3, wherein: The reserved valve (6) includes a reserved fixing part (61), a reserved movable part (62) and a reserved spring (63), where the reserved fixing part (61) is of a hollow structure. The reserved fixing part (61) is arranged in the third accommodation groove (23) and is communicated with the third accommodation groove (23). A second through hole (611) is provided on the reserved fixing part (61), and the second through hole (611) is communicated with the reserved air outlet (204); the reserved movable part (62) is arranged in the reserved fixing part (61). One end of the reserved movable part (62) movably passes through the reserved fixing part (61), and the other end selectively blocks the air inlet end of the reserved fixing part (61); the reserved spring (63) is arranged between the third accommodation groove (23) and the reserved movable part (62) and can expand and contract in the moving direction of the reserved movable part (62).

5. The pneumatic control handle according to claim 1 or 2, characterized in that: An air flow port (101) and a reserved air source port (102) are provided on the guiding part (1), where the air flow port (101) is located in the valve body (2) and is communicated with the air source port (201); the reserved air source port (102) movably passes through one end of the guiding part (1) far away from the valve body (2) along the length direction, and the reserved air source port (102) is communicated with the air flow port (101).

6. The pneumatic control handle according to claim 1, wherein: The limiting part (7) includes a limiting movable part (71), a limiting abutting part (72) and a limiting spring (73), where the limiting movable part (71) is arranged in the fourth accommodation groove (24). One end of the limiting movable part (71) movably passes through the fourth accommodation groove (24) and the movable part (5) and is fixedly connected with the limiting abutting part (72), and the other end selectively abuts against the bottom wall of the fourth accommodation groove (24); the limiting abutting part (72) abuts against the bottom surface of the movable part (5); the limiting spring (73) is arranged between the fourth accommodation groove (24) and the limiting movable part (71) and can expand and contract in the moving direction of the limiting movable part (71).

7. The pneumatic control handle according to claim 1 or 6, characterized in that: One end of the valve body (2) close to the movable part (5) is provided with a fifth accommodation groove (25), and one end of the movable part (5) close to the movable part is located in the fifth accommodation groove (25).

8. The pneumatic control handle according to claim 1, characterized in that: It further includes a receiving disc (8). The receiving disc (8) is arranged at one end of the guiding part (1) far away from the movable part (5). A plurality of pipeline holes (81) are provided on the receiving disc (8), and the pipeline holes (81) are for the passage of air pipeline.

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