A multi-way reversing valve sealing detection device

Abstract

The present invention relates to the field of sealing detection technology, and in particular to a multi-way reversing valve sealing detection device, including a detection component, including a box for containing oil, a fixed bracket is arranged above the box, a high-definition camera is arranged on the fixed bracket, a liftable sliding bracket is arranged along the fixed bracket, a rotating part is arranged on the sliding bracket, and an air pump is arranged on the fixed bracket. Through the precise positioning and manipulation of the mechanical arm, this plug body can autonomously adapt to and accurately insert into various interfaces of the multi-way reversing valve, and then trigger the expansion mechanism inside the interface, and simultaneously achieve excellent sealing performance of the interface and reliable support and fixing of the multi-way reversing valve. This design not only abandons the tediousness and cost consumption of customizing fixtures for different models and specifications of multi-way reversing valves, but also greatly improves the versatility and flexibility of the detection device, and provides a convenient, efficient and economical solution for the sealing detection of multi-way reversing valves.

Description

Technical Field

[0001] The invention relates to the technical field of sealing detection, and in particular to a sealing detection device for a multi-way reversing valve. Background Art

[0002] In the design and maintenance of hydraulic systems, multi-way reversing valves are key components for regulating the direction and flow of hydraulic fluids, and they play a vital role. These valves are the cornerstone of ensuring efficient and safe operation of the system. Any slight leak in the seal may cause a sharp drop in system efficiency, increased energy consumption, and serious safety risks. Therefore, accurate and efficient sealing testing of multi-way reversing valves has become an indispensable part of maintaining the stability and reliability of the entire hydraulic system.

[0003] However, traditional sealing detection technologies, such as visual inspection and simple liquid immersion test, have gradually become incapable of meeting the increasingly stringent sealing performance standards, especially in the face of high-pressure and complex hydraulic systems. With the advancement of technology and the improvement of safety standards, the requirements for the detection of sealing performance of multi-way reversing valves are also tending towards higher accuracy and efficiency.

[0004] At present, the specialized detection methods commonly used in the industry have made some progress, such as partially immersing the reversing valve in oil and using compressed gas as the detection medium to observe signs of leakage. This method induces the appearance of potential leakage by placing the valve stem in an extreme position and turning on the gas supply, which significantly improves the sensitivity and accuracy of detection. However, this type of method still has certain limitations. It requires customized fixtures and sealing plugs for multi-way reversing valves of different models, specifications and structures, which not only increases the cost and complexity, but also limits the versatility and flexibility of detection and reduces detection efficiency. Summary of the invention

[0005] In view of the problems existing in the existing multi-way reversing valve sealing detection device mentioned above, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a multi-way reversing valve sealing detection device, the purpose of which is to get rid of the dependence on specific clamps and plugs, achieve wide applicability to multi-way reversing valves of various models and specifications, while maintaining or improving the accuracy and efficiency of detection.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a multi-way reversing valve sealing detection device, comprising a detection component, comprising a box for containing oil, a fixed bracket is arranged above the box, a high-definition camera is arranged on the fixed bracket, a liftable sliding bracket is arranged along the fixed bracket, a rotating member is arranged on the sliding bracket, and an air pump is arranged on the fixed bracket;

[0008] The clamping component includes a turntable installed on the sliding bracket, the turntable is connected to the rotating part, a plurality of mechanical arms are installed on the turntable, a plug body is installed at the front end of the mechanical arm, the plug body is inserted into any interface of the multi-way reversing valve, and automatically expands and seals it inside, and the other interfaces are sealed by screw plugs, and the plug body is connected to the air pump.

[0009] As a preferred solution of the multi-way reversing valve sealing detection device described in the present invention, wherein: an annular first air cavity is arranged in the plug body, a rubber ring and a spring are arranged inside the first air cavity, a plurality of protrusions are arranged on the end face of the rubber ring, and the plurality of protrusions are arranged in a ring shape, and a plurality of through grooves are opened on the end face of the plug body that fits the interface of the multi-way reversing valve, and the protrusions are located in the through grooves and correspond one-to-one with them.

[0010] As a preferred solution of the multi-way reversing valve sealing detection device described in the present invention, wherein: a second air cavity connected to the first air cavity is arranged inside the plug body, and a rubber pad is also installed on the end face of the plug body that fits the interface of the multi-way reversing valve, and a third air cavity is arranged inside the rubber pad, and the third air cavity is connected to the second air cavity.

[0011] As a preferred solution of the multi-way reversing valve sealing detection device described in the present invention, wherein: a ring body is installed on the end face of the plug body, an air hole is arranged at the center of the plug body, a pneumatic telescopic part is arranged in the air hole, and a plurality of groups of double connecting rods are arranged in a ring shape inside the rubber pad, one end of the double connecting rod is hinged to the ring body, and the other end is hinged to the pneumatic telescopic part, a support plate is rotatably installed at the rotation point, and the support plate is attached to the inner wall of the rubber pad.

[0012] As a preferred solution of the multi-way reversing valve sealing detection device described in the present invention, the pneumatic telescopic part includes an outer cylinder and an inner rod, a disc is provided at the front end of the inner rod, the double connecting rod is rotatably connected to the edge of the disc, the inner rod slides in the outer cylinder through a piston, the outer cylinder is fixed to the plug body through a connecting tube, and the outer cylinder is communicated with the second air cavity.

[0013] As a preferred solution of the multi-way reversing valve sealing detection device of the present invention, a hose is wound around the mechanical arm, one end of the hose is connected to the air hole of the plug body, and the other end is connected to the air pump.

[0014] As a preferred solution of the multi-way reversing valve sealing detection device of the present invention, wherein: an electric screw is arranged on the fixed bracket, and the sliding bracket is driven by the electric screw to perform lifting movement along the fixed bracket.

[0015] As a preferred solution of the multi-way reversing valve sealing detection device described in the present invention, wherein: the sliding bracket includes two symmetrically arranged tripods, which are fixed to each other by multiple connecting rods, multiple guide wheels are installed on the tripod, and multiple connecting rods are installed with screw seats screwed to the electric screw rod, the outer hinge point of the tripod is installed through a hard pipe, and the turntable is installed on the outer wall of the hard pipe.

[0016] As a preferred solution of the multi-way reversing valve sealing detection device described in the present invention, wherein: the rotating part includes a first bevel gear installed on the outer wall of the hard tube, the first bevel gear is meshingly connected with a second bevel gear, the second bevel gear is fixedly connected to the transmission rod, and the transmission rod is installed on the motor through a coupling.

[0017] As a preferred solution of the multi-way reversing valve sealing detection device described in the present invention, the high-definition camera is installed on the top of the fixed bracket and is located directly above the box body, and a lamp is also installed on the side of the high-definition camera.

[0018] Beneficial effects of the present invention: The core improvement of the present invention is to integrate the functions of the independent plug body and the special fixture required in the traditional detection process, and integrate the functions of the two into an integrated innovative plug body. Through the precise positioning and manipulation of the robotic arm, this plug body can autonomously adapt to and accurately insert into various interfaces of the multi-way reversing valve, and then trigger the expansion mechanism inside the interface, and simultaneously achieve excellent sealing performance of the interface and reliable support and fixation of the multi-way reversing valve. This design not only eliminates the tediousness and cost of customizing fixtures for different models and specifications of multi-way reversing valves, but also greatly improves the versatility and flexibility of the detection device, providing a convenient, efficient and economical solution for the sealing detection of multi-way reversing valves, and significantly enhancing the automation level and accuracy of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the sealing detection device of the multi-way reversing valve of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the sliding bracket part of the multi-way reversing valve sealing detection device of the present invention.

[0022] Figure 3It is a schematic diagram of the structure of the clamping components of the multi-way reversing valve sealing detection device of the present invention.

[0023] Figure 4 It is a partial structural schematic diagram of the clamping component of the multi-way reversing valve sealing detection device of the present invention.

[0024] Figure 5 It is a schematic diagram of the internal structure of the clamping component of the multi-way reversing valve sealing detection device of the present invention.

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the clamping component of the multi-way reversing valve sealing detection device of the present invention.

[0026] Figure 7 for Figure 6 A schematic diagram of the enlarged structure in the middle.

[0027] In the figure:

[0028] 100, detection component; 101, box; 102, fixed bracket; 103, high-definition camera; 104, sliding bracket; 104a, tripod; 104b, connecting rod; 104c, guide wheel; 104d, screw seat; 104e, hard pipe; 105, rotating part; 105a, first bevel gear; 105b, second bevel gear; 105c, transmission rod; 105d, coupling; 105e, motor; 106, air pump; 106a, hose; 107, electric screw;

[0029] 200, clamping component; 201, turntable; 202, mechanical arm; 203, plug body; 203a, first air cavity; 203b, rubber ring; 203c, spring; 203d, bump; 203e, through groove; 203f, second air cavity; 203g, air hole; 204, rubber pad; 204a, third air cavity; 205a, ring body; 205b, pneumatic telescopic part; 205b-1, outer cylinder; 205b-2, inner rod; 205b-3, disc; 205b-4, piston; 205b-5, connecting pipe; 205c, double connecting rod; 205d, support plate. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Example 1

[0035] Reference Figure 1-5 , which is the first embodiment of the present invention, provides a multi-way reversing valve sealing detection device, including a detection component 100, including a box body 101 for containing oil, a fixed bracket 102 is arranged above the box body 101, a high-definition camera 103 is arranged on the fixed bracket 102, a liftable sliding bracket 104 is arranged along the fixed bracket 102, a rotating member 105 is arranged on the sliding bracket 104, and an air pump 106 is arranged on the fixed bracket 102; a clamping component 200, which includes a turntable 201 installed on the sliding bracket 104, the turntable 201 is connected to the rotating member 105, a plurality of mechanical arms 202 are installed on the turntable 201, a plug body 203 is installed at the front end of the mechanical arm 202, the plug body 203 is inserted into any interface of the multi-way reversing valve, and automatically expands inside and seals it, and the other interfaces are sealed by screw plugs, and the plug body 203 is connected to the air pump 106.

[0036] In view of the problems existing in the sealing detection of multi-way reversing valves in the prior art, such as the need to customize special fixtures and plug bodies 203 for multi-way reversing valves of different models and specifications, and the limited accuracy of traditional detection methods, the present application proposes a universal multi-way reversing valve sealing detection device, which is designed to overcome the above challenges and provide a more universal, accurate and efficient detection solution.

[0037] The device includes a box 101 for containing oil, with a high-definition camera 103 fixed on the top to facilitate real-time monitoring of the detection process. The fixed bracket 102 above the box 101 is not only equipped with a high-definition camera 103, but also equipped with a liftable sliding bracket 104 and an air pump 106 to provide the necessary air pressure power for the detection. The rotating member 105 installed on the sliding bracket 104 is connected to the turntable 201, and a plurality of mechanical arms 202 are configured on the turntable 201. Each mechanical arm 202 is equipped with a special plug body 203 at the front end. These plug bodies 203 are uniquely designed and can automatically expand to adapt to different interfaces of the multi-way reversing valve and achieve sealing.

[0038] The plug body 203 is designed to be compact at the beginning, and is easy to insert into the interface of the multi-way reversing valve. Once it contacts the interface, the double connecting rod 205c mechanism inside the plug body 203 works together through the built-in mechanical trigger mechanism to cause the plug body 203 to expand and deform to form a seal. This mechanism involves the complex interaction of the pneumatic system, where the gas is transferred between the air cavities inside the plug body 203, the rubber pad 204 expands and fits tightly against the valve interface, and the movement of the piston 205b-4 of the pneumatic telescopic member 205b and the double connecting rod 205c structure further enhances the sealing and stability, ensuring that the plug body 203 is firmly fixed in the interface and avoiding any displacement during the detection process.

[0039] After the main interface is sealed by the plug body 203, other interfaces are sealed with screw plugs to ensure the sealing integrity of the test. Subsequently, the multi-way reversing valve is precisely operated by the robot arm 202 and is stably immersed in the oil tank. The air pump 106 injects gas into the valve through the air path. With the compressed air as the sensitive detection medium, any tiny leak can quickly appear as bubbles in the oil, or be accurately identified by the sensors installed later.

[0040] In general, this detection device, through the integration of precision machinery, pneumatic control and automation technology, not only achieves universal adaptation to multi-way reversing valves, but also greatly improves the accuracy and efficiency of detection. It can accurately and efficiently complete the sealing detection task under the conditions of simulating the actual working environment, providing a strong technical guarantee for the reliable operation of the hydraulic system, solving the limitations of traditional detection methods, and marking a major advancement in the sealing detection technology of multi-way reversing valves.

[0041] Example 2

[0042] Reference Figure 1-3, which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the fixed bracket 102 is provided with an electric screw 107, and the sliding bracket 104 is driven by the electric screw 107 to move up and down along the fixed bracket 102. The sliding bracket 104 includes two symmetrically arranged tripods 104a, which are fixed by a plurality of connecting rods 104b, a plurality of guide wheels 104c are installed on the tripod 104a, and a plurality of connecting rods 104b are provided with screw seats 104d screwed to the electric screw 107, the outer hinge point of the tripod 104a is installed through a hard pipe 104e, and the turntable 201 is installed on the outer wall of the hard pipe 104e. The rotating member 105 includes a first bevel gear 105a mounted on the outer wall of the hard tube 104e. The first bevel gear 105a is meshedly connected with a second bevel gear 105b. The second bevel gear 105b is fixedly connected to a transmission rod 105c. The transmission rod 105c is mounted on the motor 105e through a coupling 105d.

[0043] It should be noted that: the entire device is constructed based on a fixed bracket 102, on which an electric screw 107 is installed. As the core power source for driving the entire motion system, the sliding bracket 104 is a key platform for carrying the multi-way reversing valve and its detection components, and can move up and down along the fixed bracket 102. The sliding bracket 104 is composed of two symmetrically arranged tripods 104a, which are fixedly connected by multiple connecting rods 104b in the middle, which increases the stability of the structure. Guide wheels 104c are installed around the tripod 104a. These wheels roll along the guide rails on the fixed bracket 102, so that the sliding bracket 104 can be raised and lowered smoothly. The screw seat 104d fixed on the connecting rod 104b is threadedly matched with the electric screw 107. When the electric screw 107 rotates, the sliding bracket 104 is driven up and down by thread transmission. The outer side of the tripod 104a is connected by a hard tube 104e, which is not only used as a structural support, but also has a turntable 201 installed on its outer wall. The turntable 201 is used to carry the mechanical arm 202 and the multi-way reversing valve to realize their rotational movement. The movement of the turntable 201 is realized by a set of rotating parts 105, which mainly include a first bevel gear 105a and a second bevel gear 105b. The first bevel gear 105a is installed on the outer wall of the hard tube 104e and meshes with the second bevel gear 105b fixed on the transmission rod 105c. The transmission rod 105c is connected to the motor 105e through a coupling 105d. The operation of the motor 105e drives the second bevel gear 105b to rotate, and then through the meshing transmission of the bevel gears, the first bevel gear 105a is rotated, driving the entire turntable 201 and the mechanical arm 202 and the multi-way reversing valve thereon to rotate synchronously.

[0044] The high-definition camera 103 is installed on the top of the fixed bracket 102 and is located directly above the box 101. A lamp is also installed on the side of the high-definition camera 103. The high-definition camera 103 is installed on the top of the fixed bracket 102, which means that the camera can overlook the entire detection area from a high altitude and directly observe the multi-way reversing valve in the box 101 without obstruction. Such a layout ensures that the camera has a wide field of view and can capture every detail of the multi-way reversing valve in the oil. Whether it is a static or dynamic detection stage, it provides clear and comprehensive video image data for the detection personnel, which is convenient for real-time monitoring and subsequent analysis and evaluation. Considering that the light in the box 101 may be limited, especially when performing immersion detection, the lighting conditions are crucial to the camera effect. Therefore, lamps are specially installed at the high-definition camera 103. The role of these lamps is to provide sufficient lighting, eliminate shadows, and ensure that all details inside the box 101, especially the surface of the multi-way reversing valve, can be clearly seen under the camera lens. Good lighting can not only improve image quality and reduce misjudgments caused by insufficient light, but also enhance the ability to identify subtle leaks or surface defects, making the detection results more accurate and reliable.

[0045] In this embodiment, first, the special plug body 203 is precisely placed into any interface of the multi-way reversing valve by using the precise control of the mechanical arm 202 to achieve preliminary sealing and stable support. Multiple mechanical arms 202 work together to ensure the proper connection between the multi-way reversing valve and the detection device, and prepare for subsequent detection. After the assembly of the mechanical arm 202 and the multi-way reversing valve is completed, the system uses the electric screw 107 drive mechanism to realize the up and down movement of the entire detection device through the sliding bracket 104 composed of the screw seat 104d, the connecting rod 104b and the tripod 104a. The sliding bracket 104 is installed on the fixed bracket 102. Its vertical movement is due to the guide wheels 104c set around the body sliding along the fixed track to ensure smooth lifting. When the electric screw 107 drives the sliding bracket 104 to descend, the multi-way reversing valve and its associated mechanical arm 202 are immersed in the oil tank below the fixed bracket 102. During this process, the high-definition camera 103 deployed above the fixed bracket 102 continuously monitors and records the state of the multi-way reversing valve in the oil environment so as to observe the leakage in real time. At the same time, the starting motor 105e cooperates with the coupling 105d, the transmission rod 105c and the bevel gear set (the first bevel gear 105a and the second bevel gear 105b), and the hard pipe 104e on the tripod 104a and the turntable 201 begin to rotate slowly. The mechanical arm 202 installed on the turntable 201 drives the multi-way reversing valve to rotate, realizing multi-angle and all-round detection coverage. This dynamic flipping process ensures that each side of the reversing valve can be fully exposed to the oil, which is convenient for thorough inspection of potential leakage points.

[0046] The remaining structures are the same as those of Example 1.

[0047] Example 3

[0048] Reference Figure 3-7 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: a plurality of mechanical arms 202 are installed on the turntable 201, and a plug body 203 is installed at the front end of the mechanical arm 202. The plug body 203 is inserted into any interface of the multi-way reversing valve, and automatically expands and seals it inside the plug body 203. An annular first air cavity 203a is arranged in the plug body 203, and a rubber ring 203b and a spring 203c are arranged inside the first air cavity 203a. A plurality of protrusions 203d are arranged on the end surface of the rubber ring 203b, and the plurality of protrusions 203d are arranged in a ring shape. A plurality of through grooves 203e are opened on the end surface of the plug body 203 that fits the interface of the multi-way reversing valve, and the protrusions 203d are located in the through grooves 203e and correspond to them one by one.

[0049] It should be noted that the plug body 203 includes an annular first air cavity 203a, and a rubber ring 203b and a spring 203c are installed inside the first air cavity 203a. The rubber ring 203b can adapt to first air cavities 203a of different sizes and have an interference fit with them, which not only plays a sealing role to achieve a tighter fit, but also can squeeze the air in the first air cavity 203a and squeeze it into the second air cavity 203f. The spring 203c in the first air cavity 203a is used to reset the rubber ring 203b and suck back the gas in the second air cavity 203f. The end surface of the rubber ring 203b is provided with a plurality of protrusions 203d, which are arranged in a ring shape and correspond one to one with the through grooves 203e specially provided on the plug body 203. When the plug body 203 is pushed into the interface of the multi-way reversing valve, the protrusions 203d will move along the through grooves 203e. The ring shape of the protrusions 203d increases the contact opportunity between the protrusions 203d and the edge of the multi-way reversing valve interface. Even if the interface shape is slightly irregular, a good contact effect can be achieved through the joint action of the plurality of protrusions 203d, ensuring that there is no possibility of omission. Among them, the multi-way reversing valve interface that the mechanical arm 202 drives the plug body 203 to insert is not specially designated. First, the mechanical arm 202 is preferably inserted into the interface closest to it, and the symmetry effect also needs to be considered, preferably the inlet and outlet of the multi-way reversing valve.

[0050] A second air cavity 203f connected to the first air cavity 203a is arranged inside the plug body 203, and a rubber pad 204 is installed on the end face of the plug body 203 that fits the interface of the multi-way reversing valve. A third air cavity 204a is arranged inside the rubber pad 204, and the third air cavity 204a is connected to the second air cavity 203f.

[0051] It should be noted that after the gas is squeezed out of the first air cavity 203a, it will pass through the second air cavity 203f in sequence and finally enter the third air cavity 204a. In this process, the pressure of the gas forces the rubber pad 204 to expand, and the expansion of the rubber pad 204 can fit more closely to the inner wall of the multi-way reversing valve interface to form a highly sealed state. The double expansion design of the rubber ring 203b and the rubber pad 204 not only enhances the sealing effect, but also can adapt to interfaces of different sizes and shapes, ensuring the flexibility and reliability of the seal.

[0052] A ring body 205a is installed on the end face of the plug body 203, an air hole 203g is arranged at the center of the plug body 203, a pneumatic telescopic part 205b is arranged in the air hole 203g, and multiple groups of double connecting rods 205c are arranged in a ring inside the rubber pad 204, one end of the double connecting rod 205c is hinged on the ring body 205a, and the other end is hinged on the pneumatic telescopic part 205b, and a support plate 205d is rotatably installed at the rotation point, and the support plate 205d is attached to the inner wall of the rubber pad 204. The pneumatic telescopic member 205b includes an outer cylinder 205b-1 and an inner rod 205b-2. A disc 205b-3 is provided at the front end of the inner rod 205b-2. The double connecting rod 205c is rotatably connected to the edge of the disc 205b-3. The inner rod 205b-2 slides in the outer cylinder 205b-1 through the piston 205b-4. The outer cylinder 205b-1 is fixed to the plug body 203 through the connecting tube 205b-5, and the outer cylinder 205b-1 is connected to the second air cavity 203f.

[0053] It should be noted that: the end of the plug body 203 is equipped with a ring body 205a, and an air hole 203g is provided in the center. A pneumatic telescopic member 205b is installed inside the air hole 203g. The pneumatic telescopic member 205b is the power core of the entire sealing mechanism, and is composed of two parts: an outer cylinder 205b-1 and a slidable inner rod 205b-2. The front end of the inner rod 205b-2 is equipped with a disc 205b-3, and multiple groups of double connecting rods 205c mechanisms are installed on the ring body 205a. The two ends of the double connecting rods 205c are respectively connected to the ring body 205a and the disc 205b-3 of the pneumatic telescopic member 205b through a rotation point. This design makes it possible for the pneumatic telescopic member 205b to be more flexible. When the inner rod 205b-2 in the component 205b telescopes and slides under the action of air pressure, not only the inner rod 205b-2 itself will be displaced, but also the other end of the double link 205c (the part connected to the ring body 205a) will produce corresponding movement through the transmission of the double link 205c. The support plate 205d is installed on the rotation point of the double link 205c. As the double link 205c moves, the support plate 205d is close to the inner wall of the rubber pad 204, playing a supporting and fixing role.

[0054] Working principle of pneumatic telescopic member 205b: The outer cylinder 205b-1 of pneumatic telescopic member 205b is fixed on the plug body 203 and is connected to the second air cavity 203f in the plug body 203. When compressed gas is introduced into the second air cavity 203f, the gas pressure will push the inner rod 205b-2 to slide along the outer cylinder 205b-1. This action is converted into an expansion force on the outside through the double connecting rod 205c mechanism, resulting in the expansion and deformation of the rubber pad 204 and the entire plug body 203 structure, thereby more closely fitting the inner wall of the multi-way reversing valve interface to form a reliable sealing effect. Through the ingenious combination of the pneumatic telescopic member 205b and the double connecting rod 205c mechanism, the expansion of the rubber pad 204 is precisely controlled, which not only can adjust the sealing force according to actual needs, but also ensure the stability and consistency of the sealing process. The existence of the support plate 205d further enhances the stability of the sealing structure and prevents displacement or deformation caused by the internal and external pressure difference during the sealing and detection process, thereby improving the reliability and accuracy of the entire detection system.

[0055] An air hole 203g is arranged at the center of the plug body 203, and a hose 106a is wound around the robot arm 202. One end of the hose 106a is connected to the air hole 203g of the plug body 203, and the other end is connected to the air pump 106. As a part of this automated or semi-automated testing equipment, the robot arm 202 is not only responsible for accurately manipulating and placing the plug body 203, but also undertakes the task of gas delivery. A hose 106a is wound around the surface and the end of the robot arm 202, and the hose 106a plays the role of a gas transmission channel. One end of the hose 106a is tightly connected to the air hole 203g at the center of the plug body 203, ensuring that the gas can flow from the hose 106a into the plug body 203 without leakage; the other end is connected to the air pump 106, which is the power source of the entire gas injection system and is responsible for providing gas with constant or controllable pressure.

[0056] Gas injection test process: When everything is ready, the air pump 106 is started, and the compressed gas is transmitted through the hose 106a, passes through the air hole 203g of the plug body 203, and is finally injected into the interior of the multi-way reversing valve. This process simulates the pressure environment of the multi-way reversing valve in actual working conditions, and evaluates the sealing performance of the reversing valve by observing whether the gas leaks. If the reversing valve is well sealed, the gas will not leak; on the contrary, if there is a leak point, signs of gas leakage (such as the appearance of bubbles, pressure drop, etc.) will be detected, thereby revealing the sealing defects of the reversing valve.

[0057] In this embodiment: through the operation of the mechanical arm 202, the special plug body 203 is precisely inserted into any interface of the multi-way reversing valve. This plug body 203 is uniquely designed and includes an expandable structure. The initial form is easy to insert. Once it contacts the multi-way reversing valve interface, it begins to expand and deform through a mechanical trigger mechanism. This process involves the coordinated work of the double connecting rod 205c mechanism. The double connecting rod 205c first maintains a compact form to assist the front end of the plug body 203 to easily embed into the target interface. Once the special protrusion 203d on the plug body 203 encounters the multi-way reversing valve interface and bears the extrusion force, the preset pneumatic sequence is triggered immediately. The pressure of the protrusion 203d causes the rubber ring 203b to move inward to press the spring 203c in the first air cavity 203a, and the gas in the first air cavity 203a is transferred to the second air cavity 203f through the airway. The second air cavity 203f is connected with the third air cavity 204a and the pneumatic telescopic member 205b. The gas is then introduced into the third air cavity 204a of the rubber pad 204. This series of gas flows causes the rubber pad 204 to expand, perfectly fitting the inner wall of the multi-way reversing valve interface to form an initial seal. At the same time, the gas is also transmitted to the pneumatic telescopic part 205b, pushing its internal piston 205b-4 and the connected multiple sets of double connecting rods 205c structures to move in the outward direction.

[0058] It is worth noting that the disc 205b-3 fixed at the front end of the piston 205b-4 is connected to the inner rods of multiple sets of double connecting rods 205c. This linkage mechanism enables the outer rod parts of the double connecting rods 205c to expand outward synchronously, and the support plate 205d located at the hinge point of the two obtains power to expand in all directions. This expansion effect is like stretching the rubber pad 204 from the inside to form a stable trumpet shape, which not only strengthens the sealing effect between the plug body 203 and the interface, but also provides the necessary supporting force to ensure stable positioning during detection and effectively prevent any unnecessary displacement. This whole set of complex mechanical interactions and pneumatic collaborations jointly ensure that the sealing and fixation of the plug body 203 in the interface of the multi-way reversing valve meet the highest standards, laying a solid foundation for subsequent sealing detection.

[0059] After the main interface is sealed by the plug body 203, the remaining interfaces of the multi-way reversing valve are sealed with screw plugs to ensure the rigor of the test. At this time, the multi-way reversing valve has been accurately fixed by the robot arm 202 and slowly immersed in the box 101 filled with oil through the sliding bracket 104, ready for sealing detection. As the multi-way reversing valve is completely immersed in the oil, the air pump 106 injects gas into the multi-way reversing valve through the established air path. Due to the previous fine sealing measures, any leakage will immediately appear as bubbles in the oil or be detected by other sensors, especially using compressed air as the detection medium, even small leaks can be quickly identified. In summary, the detection process integrates precision machinery, pneumatic control and automation technology. Through a series of complex and coordinated operations, it ensures that the multi-way reversing valve is firmly supported and completely sealed before the sealing test, and can accurately and efficiently complete the sealing detection task under the conditions of simulating the real working environment.

[0060] The remaining structure is the same as that of Example 2.

[0061] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative, and the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-way reversing valve sealing detection device, characterized in that: include, The detection component (100) comprises a box (101) for containing oil, a fixed bracket (102) is arranged above the box (101), a high-definition camera (103) is arranged on the fixed bracket (102), a liftable sliding bracket (104) is arranged along the fixed bracket (102), a rotating member (105) is arranged on the sliding bracket (104), and an air pump (106) is arranged on the fixed bracket (102);The clamping component (200) comprises a rotating disk (201) mounted on the sliding bracket (104), the rotating disk (201) being connected to the rotating member (105), a plurality of mechanical arms (202) being mounted on the rotating disk (201), a plug body (203) being mounted at the front end of each mechanical arm (202), the plug body (203) being inserted into any interface of the multi-way reversing valve and automatically expanding and sealing the inside thereof, and the other interfaces being sealed by screw plugs, the plug body (203) being connected to the air pump (106), a first annular air cavity (203a) being arranged inside the plug body (203), a rubber ring (203b) and a spring (203c) being arranged inside the first air cavity (203a), A plurality of protrusions (203d) are arranged on the end surface of the rubber ring (203b), and the plurality of protrusions (203d) are arranged in a ring shape. A plurality of through grooves (203e) are provided on the end surface of the plug body (203) that is in contact with the interface of the multi-way reversing valve, and the protrusions (203d) are located in the through grooves (203e) and correspond one to one with the through grooves. A second air cavity (203f) is provided on the inner side of the first air cavity (203a) in the plug body (203) and is connected thereto. A rubber pad (204) is also installed on the end surface of the plug body (203) that is in contact with the interface of the multi-way reversing valve, and a third air cavity (204a) is provided inside the rubber pad (204), and the third air cavity (204a) is connected to the second air cavity (203f). The end surface of the plug body (203) is provided with a ring body (205a), the center of the plug body (203) is provided with an air hole (203g), a pneumatic telescopic member (205b) is provided in the air hole (203g), a plurality of groups of double connecting rods (205c) are provided in an annular shape inside the rubber pad (204), one end of the double connecting rod (205c) is hinged on the ring body (205a), and the other end is hinged on the pneumatic telescopic member (205b), a support plate (205d) is rotatably installed at the rotation point of the double connecting rod (205c), and the support plate (205d) is attached to the inner wall of the rubber pad (204), and the pneumatic telescopic member (205b) comprises an outer cylinder (205b-1) and an inner rod (205b-2). 2), a disc (205b-3) is provided at the front end of the inner rod (205b-2), the double connecting rod (205c) is rotatably connected to the edge of the disc (205b-3), the inner rod (205b-2) slides in the outer cylinder (205b-1) through the piston (205b-4), the outer cylinder (205b-1) is fixed to the plug body (203) through a connecting tube (205b-5), and the outer cylinder (205b-1) is connected to the second air cavity (203f), and a hose (106a) is wound around the mechanical arm (202), one end of the hose (106a) is connected to the air hole (203g) of the plug body (203), and the other end is connected to the air pump (106). ; 2. The multi-way reversing valve sealing detection device according to claim 1 is characterized in that: The fixed bracket (102) is provided with an electric screw rod (107), and the sliding bracket (104) is driven by the electric screw rod (107) to perform lifting movement along the fixed bracket (102).

3. The multi-way reversing valve sealing detection device according to claim 2 is characterized in that: The sliding bracket (104) comprises two symmetrically arranged tripods (104a), the two tripods (104a) being fixed to each other via a plurality of connecting rods (104b), a plurality of guide wheels (104c) being mounted on the tripods (104a), a plurality of connecting rods (104b) being mounted on screw seats (104d) screwed to the electric screw rod (107), an outer hinge point of the tripod (104a) being mounted via a hard tube (104e), and the turntable (201) being mounted on the outer wall of the hard tube (104e).

4. The multi-way reversing valve sealing detection device according to claim 3 is characterized in that: The rotating member (105) comprises a first bevel gear (105a) mounted on the outer wall of the hard tube (104e), the first bevel gear (105a) being meshingly connected with a second bevel gear (105b), the second bevel gear (105b) being fixedly connected to a transmission rod (105c), and the transmission rod (105c) being mounted on the motor (105e) via a coupling (105d).

5. The multi-way reversing valve sealing detection device according to claim 1 is characterized in that: The high-definition camera (103) is installed on the top of the fixing bracket (102) and is located directly above the box (101). A lamp is also installed on the side of the high-definition camera (103).

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