A pneumatic winch brake control valve and a pneumatic winch

Abstract

The utility model provides a kind of pneumatic winch brake control valve and pneumatic winch, including valve body, valve core, operating hand lever and control pressure handle, the air inlet, gas outlet and air guide hole are equipped on valve body, the air inlet and gas outlet are all communicated with air guide hole, valve core is slidably embedded in air guide hole, and elastic element is clamped between the bottom end of the valve core and valve body, the top end of the valve core protrudes from air guide hole, operating hand lever is fixedly connected with valve body, one end of control pressure handle is hinged on valve body, and the top end of the valve core is abutted by the control pressure handle, so that control pressure handle and operating hand lever present certain angle, the control pressure handle can press valve core from first position to second position, when valve core is in first position, valve core can block air inlet and gas outlet on valve body, when valve core is in second position, air guide hole can communicate air inlet and gas outlet. The utility model discloses pneumatic winch brake control valve is easy to operate, convenient to use, and it is convenient to carry out long-time operation control.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic winch technology, and in particular to a pneumatic winch brake control valve and a pneumatic winch. Background Technology

[0002] In the harsh environment and safety-critical field of oil exploration, pneumatic winches, with their unique advantages, have become indispensable key equipment in drilling platforms, logging operations, and field exploration. Their application value and importance are mainly reflected in drill pipe and equipment handling, and the deployment and retrieval of logging instruments. During drilling platform operations, pneumatic winches are the core force for hoisting drill pipes, casing, and other heavy drilling equipment. Their strong pulling force and controllable speed ensure the efficient and orderly operation of the drilling platform. In logging operations, pneumatic winches are responsible for safely and smoothly lowering and accurately retrieving precision and expensive logging instruments into wells thousands of meters deep; their operational stability is crucial for protecting the instruments. In emergencies such as derrick construction, equipment maintenance, and blowouts, pneumatic winches also provide critical lifting and traction capabilities, ensuring flexibility and emergency response in on-site operations. The widespread application of pneumatic winches is primarily due to their inherent safety and reliable explosion-proof design. Powered by compressed air, pneumatic winches completely eliminate electrical sparks, making them an inherently safe power source in well site environments filled with flammable and explosive gases (such as methane and hydrogen sulfide). Their robust structure is resistant to moisture, dust, and corrosive gases, offering reliability far exceeding that of ordinary electric equipment. They are particularly suitable for low-speed, heavy-load conditions, easily handling extremely heavy loads such as drill pipes and casing. Pneumatic drive enables smooth, stepless speed regulation and precise lifting control; built-in overload protection prevents equipment damage and enhances operational safety. Compared to hydraulic or complex electric systems, pneumatic winches have a simpler structure, fewer components, and a lower failure rate. With their inherent safety, environmental adaptability, strong load capacity, and high reliability, pneumatic winches have become a crucial link in the oil exploration operation chain. They not only ensure the efficient operation of exploration work but also serve as a core line of defense for the safety of on-site personnel and the protection of high-value equipment. In the oil exploration field, where safety and efficiency are paramount, pneumatic winches hold an irreplaceable position, continuously providing a solid guarantee for the exploration and development of underground resources.

[0003] Currently, most pneumatic winches are equipped with two braking systems. One system combines a foot brake and a handbrake; the foot brake is used for temporary braking during operation, while the handbrake is used for prolonged braking after use. The other system combines a handbrake and a pneumatic brake; the handbrake maintains the winch at a complete stop after use, while the pneumatic brake is normally closed and opens when air is introduced. Currently, air intake and shut-off are controlled by pressing a reversing valve with the thumb. This method is inconvenient for operation during extended use and hinders certain coordinated operations, potentially leading to risks such as falling loads or equipment damage. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a pneumatic winch brake control valve and a pneumatic winch that are easy to operate, convenient to use, and easy to operate and control for a long time.

[0005] To achieve the above and other related objectives, one aspect of this utility model provides a pneumatic winch brake control valve, comprising a valve body having an air inlet, an air outlet, and an air guide hole, the air inlet and the air outlet being connected to the air guide hole; a valve core slidably embedded in the air guide hole, an elastic element sandwiched between the bottom end of the valve core and the valve body, and the top end of the valve core protruding from the air guide hole; an operating lever fixedly connected to the valve body; and a control handle, one end of which is hinged to the valve body, and the control handle abutting against the top end of the valve core, such that the control handle and the operating lever form a certain angle; the control handle can press the valve core from a first position to a second position; when the valve core is in the first position, the valve core can block the air inlet and the air outlet; when the valve core is in the second position, the air guide hole connects the air inlet and the air outlet.

[0006] Furthermore, the air guide hole includes a first section and a second section, the diameter of the first section is smaller than the diameter of the second section, and a positioning step is formed at the connection between the first section and the second section; the valve core includes a first diameter section adapted to the first section and a second diameter section adapted to the second section, the length of the second diameter section is smaller than the length of the second section, the air inlet and the air outlet are both connected to the second section; and the vertical distance between the air inlet and the air outlet is less than or equal to the length of the second diameter section.

[0007] Furthermore, the control lever is hinged to the valve body via a pin.

[0008] Furthermore, the valve body is provided with a threaded hole, and the operating lever is provided with a screw connection part, which is threadedly connected to the threaded hole.

[0009] Furthermore, the elastic element is a spring.

[0010] Furthermore, a first sealing ring is fitted onto the valve core.

[0011] Furthermore, the air guide hole is a through hole, and a sealing cap is threaded onto the valve body. The sealing cap is used to block one end of the air guide hole, and the elastic element is sandwiched between the sealing cap and the bottom end of the valve core.

[0012] Furthermore, a second sealing ring is provided at the connection between the sealing cover and the valve body.

[0013] As described above, the pneumatic winch brake control valve of this utility model has the following beneficial effects: In use, the control valve, i.e., the valve body, is connected to the control reversing valve of the pneumatic winch, and the air outlet of the valve body is connected to the brake cylinder of the pneumatic winch. By pushing the operating lever forward or backward, the operating lever will cause the valve body and the control reversing valve of the pneumatic winch connected to the valve body to move forward or backward together, thereby controlling the winch to perform lifting or lowering actions. Since the pneumatic brake of this pneumatic winch is a normally closed brake, while pushing the operating lever, the operator also needs to simultaneously hold the control lever, i.e. Pulling the control handle towards the operating lever causes it to contact the top of the valve core, pressing the valve core downwards relative to the guide hole (compressing the elastic element). This moves the valve core from the first position to the second position, changing the air inlet and outlet from a blocked state to a conducting state, allowing air to be supplied to the pneumatic brake, opening the brake, and enabling the pneumatic winch to lift and lower. When braking is needed, the operator simply releases the control handle, and the valve core returns to its initial first position under the action of the elastic element, thus blocking the air inlet and outlet. Compared with existing technologies, this pneumatic winch brake control valve combines the control handle and operating lever to control the lifting and lowering of the pneumatic brake. The control handle is hand-held, facilitating the control of the brake air supply, making it easy to operate, greatly improving the comfort and convenience of long-term operation, and ensuring operational safety.

[0014] Another aspect of this utility model provides a pneumatic winch, which includes the pneumatic winch brake control valve as described above.

[0015] The beneficial effects of this pneumatic winch are the same as those of the pneumatic winch brake control valve mentioned above, so they will not be repeated here. Attached Figure Description

[0016] Figure 1 The diagram shown is a structural schematic of the pneumatic winch brake control valve provided by this utility model.

[0017] Figure 2 The present invention is shown to provide Figure 1 Cross-sectional view of AA (valve core is in the closed state).

[0018] Figure 3 The present invention is shown to provide Figure 1 Cross-sectional view of AA (valve core in the open position).

[0019] Explanation of reference numerals in the attached figures 10-Valve body; 101-Air inlet; 102-Air outlet; 103-Air guide hole; 1031-Positioning step; 10a-Connecting hole; 20-Valve core; 21-First sealing ring; 201-First diameter section; 202-Second diameter section; 30-Operating lever; 301-Screw connection part; 40-Control handle; 11-Sealing cover; 110-Second sealing ring; 50-Spring. Detailed Implementation

[0020] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Please see Figures 1 to 3 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0024] The first aspect of this utility model provides a pneumatic winch brake control valve, such as... Figures 1 to 3 As shown, the pneumatic winch brake control valve includes a valve body 10, a valve core 20, an operating lever 30, and a control handle 40. The valve body 10 has an air inlet 101, an air outlet 102, and an air guide hole 103. Both the air inlet 101 and the air outlet 102 are connected to the air guide hole 103. The valve core 20 is slidably embedded in the air guide hole 103 of the valve body 10. An elastic element is sandwiched between the bottom end of the valve core 20 and the valve body 10, and the top end of the valve core 20 protrudes from the air guide hole 103. The operating lever 30 is connected to the valve body 10... The control handle 40 is fixedly connected, with one end hinged to the valve body 10, and the control handle 40 abuts against the top of the valve core 20, so that the control handle 40 and the operating lever 30 form a certain angle. The control handle 40 can press the valve core 20 from the first position to the second position. When the valve core 20 is in the first position, the valve core 20 can block the air inlet 101 and the air outlet 102 on the valve body 10. When the valve core 20 is in the second position, the air guide hole 103 can connect the air inlet 101 and the air outlet 102.

[0025] The beneficial effects of this utility model's pneumatic winch brake control valve are as follows: In use, the control valve (valve body) is connected to the control reversing valve of the pneumatic winch, and the air outlet 102 of the valve body 10 is connected to the brake cylinder of the pneumatic winch. By pushing the operating lever 30 forward or backward, the operating lever 30 will cause the valve body 10 and the control reversing valve of the pneumatic winch connected to the valve body 10 to move forward or backward together, thereby controlling the winch to perform lifting or lowering actions. Since the pneumatic brake of this pneumatic winch is a normally closed brake, while pushing the operating lever 30, the operator must also simultaneously hold the control handle 40, that is, pull the control handle 40 towards... When the operating lever 30 is rotated, the control handle 40 abuts against the top of the valve core 20, causing the control handle 40 to press the valve core 20 downward relative to the guide hole 103 (compressing the elastic element). This presses the valve core 20 from the first position to the second position, thus changing the air inlet 101 and air outlet 102 from a blocked state to a conducting state, enabling air supply to the pneumatic brake, opening the brake, and thus realizing the lifting and lowering movement of the pneumatic winch. When braking is required, the operator only needs to release the control handle 40, and the valve core 20, under the action of the elastic element, returns to its initial first position, thereby blocking the air inlet 101 and air outlet 102. Compared with the prior art, the pneumatic winch brake control valve of this utility model combines the control handle and the operating lever to control the lifting and lowering of the pneumatic brake. The control handle is hand-held, facilitating the on / off control of the brake air source, making it easy to operate, greatly improving the comfort and convenience of long-term operation, and ensuring operational safety.

[0026] Furthermore, such as Figure 2 and Figure 3As shown, in this embodiment, the air guide hole 103 includes a first hole segment and a second hole segment, wherein the diameter of the first hole segment is smaller than the diameter of the second hole segment, and a positioning step 1031 is formed at the connection between the first hole segment and the second hole segment; correspondingly, the valve core 20 includes a first diameter segment 201 adapted to the first hole segment and a second diameter segment 202 adapted to the second hole segment, that is, the diameter of the second diameter segment 202 is larger than the diameter of the first diameter segment 201, and the length of the second diameter segment 202 of the valve core 20 is less than the length of the second hole segment of the air guide hole 103. The air inlet 101 and the air outlet 102 are both connected to the second hole segment, and the vertical distance between the air inlet 101 and the air outlet 102 is less than or equal to the length of the second diameter segment 202 of the valve core 20. This configuration, as shown... Figure 2 and Figure 3 As shown, under normal conditions, based on the elastic force of the elastic element at the bottom of the valve core 20, the second diameter end 202 of the valve core 20 is clamped between the elastic element and the positioning step 1031, that is, the top surface of the second diameter section 202 is tightly fitted with the positioning step 1031. At this time, the valve core 20 is in the first position. Through the cooperation between the second diameter section 202 of the valve core 20 and the second hole section, that is, the outer peripheral surface of the second diameter section 202 of the valve core 20 is fitted with the inner wall of the second hole section, thereby... The air inlet 101 and air outlet 102 are sealed. When the control handle 40 is rotated towards the operating lever 30 to press the valve core 20, the elastic element is compressed, and the valve core 20 moves downward. This causes the first diameter section 201 of the valve core 20 to move downward into the second orifice section. Since the diameter of the first diameter section 201 is smaller than the diameter of the second orifice section, a gap appears between the valve core 20 and the second orifice section, which allows the air inlet 101 and air outlet 102 to communicate. The structure is simple and the operation is convenient. Specifically, in this embodiment, the elastic element is a spring 50.

[0027] Specifically, such as Figure 1 As shown, in this embodiment, the valve body 20 is provided with a threaded hole, and the operating lever 30 is provided with a screw connection part 301, which is threadedly connected to the threaded hole on the valve body 20. Specifically, the valve body 10 is also provided with a connection hole 10a, through which the valve body 10 is connected to the control reversing valve of the pneumatic winch. The connection hole 10a is specifically a threaded hole.

[0028] Furthermore, in order to improve the fit between the operating handle 40 and the top of the valve core 20, that is, to facilitate the operation of the operating handle 40 to press the valve core 20, preferably, in this embodiment, the top of the valve core 20 is arc-shaped.

[0029] Furthermore, such as Figure 1 As shown, in this embodiment, the control handle 40 is hinged to the valve body 10 via a pin 401. The structure is simple and the cost is low.

[0030] Furthermore, in order to improve the sealing performance of the connection between the valve core 20 and the air guide hole 103, such as... Figure 2 As shown, in this embodiment, a first sealing ring 21 is fitted onto the valve core 20. Specifically, two first sealing rings 21 are provided on the valve core 20, and the two first sealing rings 21 are respectively disposed on the first diameter section 201 and the second diameter section 202.

[0031] Furthermore, to facilitate the assembly of the valve body 10 and the valve core 20, such as... Figure 2 As shown, in this embodiment, the air guide hole 103 is a through hole, and a sealing cap 11 is threaded onto the valve body 10. The sealing cap 11 is used to block one end of the air guide hole 103, and the elastic element, i.e., the spring 50, is sandwiched between the sealing cap 11 and the bottom end of the valve core 20.

[0032] Furthermore, in order to improve the sealing performance of the connection between the sealing cover 11 and the valve body 10, in this embodiment, a second sealing ring 110 is provided at the connection between the sealing cover 11 and the valve body 10.

[0033] Another aspect of this utility model provides a pneumatic winch, which includes the pneumatic winch brake control valve as described above.

[0034] The beneficial effects of this pneumatic winch are the same as those of the pneumatic winch brake control valve mentioned above, so they will not be repeated here.

[0035] In summary, the pneumatic winch brake control valve and pneumatic winch of this invention combine a control lever and an operating handle to control the lifting and lowering of the pneumatic brake. Furthermore, the control lever is hand-held, facilitating the control of the brake air supply, making it easy to operate, greatly improving comfort and convenience during extended operation, and ensuring operational safety. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses high industrial application value.

[0036] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A pneumatic winch brake control valve, characterized in that... include: The valve body is provided with an air inlet, an air outlet and an air guide hole, and the air inlet and the air outlet are both connected to the air guide hole; A valve core is slidably embedded in the air guide hole, and an elastic element is sandwiched between the bottom end of the valve core and the valve body, and the top end of the valve core protrudes from the air guide hole. An operating lever, which is fixedly connected to the valve body; A control handle is provided, one end of which is hinged to the valve body, and the control handle abuts against the top of the valve core, such that the control handle and the operating lever form a certain angle; the control handle can press the valve core from a first position to a second position; when the valve core is in the first position, the valve core can block the air inlet and the air outlet; when the valve core is in the second position, the air guide hole connects the air inlet and the air outlet.

2. The pneumatic winch brake control valve according to claim 1, characterized in that, The air guide hole includes a first section and a second section, the diameter of the first section is smaller than the diameter of the second section, and a positioning step is formed at the connection between the first section and the second section; the valve core includes a first diameter section adapted to the first section and a second diameter section adapted to the second section, the length of the second diameter section is smaller than the length of the second section, the air inlet and the air outlet are both connected to the second section; and the vertical distance between the air inlet and the air outlet is less than or equal to the length of the second diameter section.

3. A pneumatic winch brake control valve according to claim 1, characterized in that, The control lever is hinged to the valve body via a pin.

4. A pneumatic winch brake control valve according to claim 1, characterized in that, The valve body is provided with a threaded hole, and the operating lever is provided with a screw connection part, which is threadedly connected to the threaded hole.

5. A pneumatic winch brake control valve according to claim 1, characterized in that, The elastic element is a spring.

6. A pneumatic winch brake control valve according to claim 1, characterized in that, The valve core is fitted with a first sealing ring.

7. A pneumatic winch brake control valve according to claim 1, characterized in that, The air guide hole is a through hole, and a sealing cap is threaded onto the valve body. The sealing cap is used to block one end of the air guide hole, and the elastic element is sandwiched between the sealing cap and the bottom end of the valve core.

8. A pneumatic winch brake control valve according to claim 7, characterized in that, A second sealing ring is provided at the connection between the sealing cover and the valve body.

9. A pneumatic winch, characterized in that, Includes the pneumatic winch brake control valve as described in any one of claims 1 to 8.

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