Executing mechanism multi-gas-path sealing performance detection tool

Abstract

The utility model discloses an actuating mechanism multi-gas-path sealing performance detection tool which is characterized in that a gas path is arranged in a plug, and the gas path is communicated with a straight joint connected with the plug; the end portion of the plug is of a step structure integrally formed by a large cylinder and a small cylinder with different diameters, the step structure is matched with a step inner cavity of the executing mechanism, the two cylinders are sleeved with sealing rings, an air hole is formed in the end face of the bottom of the large cylinder, and when sealing performance detection is carried out, the outer walls of the two cylinders and the inner cavity of the executing mechanism form axial sealing respectively. The bottom end face of the large cylinder and an inner cavity of the execution mechanism form an air cavity which is communicated with a to-be-tested air path of the execution mechanism. Axial sealing is used for isolating a gas circuit needing to be plugged, the gas hole is used for achieving inflation detection of the gas circuit to be detected, the requirement for conducting sealing performance detection on all single gas circuits of an executing mechanism one by one can be met, sealing performance detection in the assembling process is increased, assembly product repair caused by the gas circuit sealing performance problem is reduced, and the finished product repair rate is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of actuator detection, and in particular relates to a multi-gas-path sealing detection tool for an actuator. Background Art

[0002] At present, most pure electric heavy-duty trucks, mining vehicles and AMT products are of central integrated structure. The most commonly used method is to select and shift gears through the electro-pneumatic shift actuator. The integrated electro-pneumatic shift actuator integrates sensors, solenoid valves, wiring harnesses and other components to a high degree inside, which greatly improves the reliability and control accuracy of the vehicle's gear shifting and wins praise from the majority of drivers.

[0003] As a core component of new energy and AMT products, the product quality of the actuator is particularly important, directly affecting the reliability and control accuracy of the vehicle's gear selection and shifting. As an actuator with highly integrated multiple and complex gas circuits, it usually has single gas circuit leakage or multiple gas circuits with gas cross-talk and other failure points, making it difficult to detect the sealing of each gas circuit. At present, after the overall assembly of the product is completed, the product assembly can be tested for sealing and offline testing. However, the failure rate of the product remains high, which has caused great trouble to the product repair process.

[0004] For the sealing test of multiple gas circuits of the actuator, during the assembly process, it is necessary to check the sealing of each single gas circuit of the actuator one by one. Figure 1 As shown, the actuator has two gas paths to be tested, and they need to be tested one by one. This requires that when testing one of them, the other needs to be blocked. The existing testing tooling cannot meet the above requirements. Utility Model Content

[0005] In order to solve the above technical defects, the utility model provides a multi-gas-circuit sealing detection tool for an actuator. The use of this system can solve the technical problem that the existing detection tool cannot effectively detect the multi-gas circuits of the actuator during the assembly process of the actuator.

[0006] In order to achieve the above purpose, the utility model adopts the following technical contents:

[0007] A multi-gas-path sealing detection tool for an actuator, comprising a plug;

[0008] An air passage is provided inside the plug, one end of the plug is connected to a straight-through joint, and the straight-through joint is communicated with the air passage;

[0009] The other end of the plug adopts a step structure, which is integrally formed by two large and small cylinders with different diameters, and the small cylinder is located at the bottom end of the plug;

[0010] The two cylinders are both provided with sealing rings, and the bottom end surface of the large cylinder is provided with at least one air hole, which is connected with the air passage;

[0011] When performing a sealing test, the outer walls of the two cylinders and the inner cavity of the actuator respectively form an axial seal, the bottom end surface of the large cylinder and the inner cavity of the actuator form an air cavity, and the air cavity is connected to the air path of the actuator to be tested.

[0012] Furthermore, a first groove is formed on the circumference of the large cylinder, and the first O-ring is sleeved in the first groove.

[0013] Furthermore, a second groove is formed on the circumference of the small cylinder, and the second O-ring is sleeved in the second groove.

[0014] Furthermore, a step surface is provided on the outer wall of the plug.

[0015] Furthermore, when performing a sealing test, the plug is inserted on the plug pressure plate.

[0016] Furthermore, the plug pressure plate is fixed to the actuator by screws.

[0017] Furthermore, the screw is a hexagon socket head screw.

[0018] Furthermore, a first air hole and a second air hole are formed on the bottom end surface of the large cylinder.

[0019] Furthermore, the plug is connected to the straight connector via threads.

[0020] Furthermore, the plug is made of stainless steel.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model provides a multi-gas-path sealing detection tool for an actuator. The detection tool adopts a plug, an airway is arranged inside the plug, and the airway is communicated with a straight-through joint connected to the plug; the end of the plug adopts a step structure composed of two large and small cylinders with different diameters, which is adapted to the step inner cavity of the actuator, and sealing rings are sleeved on the two cylinders. At least one air hole connected to the airway is arranged on the bottom end face of the large cylinder. When the sealing detection is performed, the outer walls of the two cylinders and the inner cavity of the actuator form an axial seal respectively, and the bottom end face of the large cylinder An air cavity is formed between the end face of the actuator and the inner cavity of the actuator, and the air cavity is connected with the air path to be tested of the actuator; the air path to be blocked is isolated by the axial seal, and the air hole is used to realize the inflation detection of the air path to be tested, which can meet the sealing inspection of each single air path of the actuator one by one, increase the sealing performance detection during the assembly process, and can detect the sealing of multiple air paths of the actuator in advance, which can effectively prevent the leakage of a single air path or the phenomenon of cross-gas in multiple air paths, greatly reduce the return of assembly products due to air path sealing problems, and reduce the return rate of finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of two gas paths among the multiple gas paths provided in this embodiment;

[0024] Figure 2 A structural cross-sectional view of a multi-gas-path sealing detection tool for an actuator provided in this embodiment;

[0025] Figure 3 A working state diagram of a multi-gas-path sealing detection tool for an actuator provided in this embodiment;

[0026] Figure 4 An axonometric diagram of a multi-gas-path sealing detection tool for an actuator provided in this embodiment;

[0027] Figure 5 An axonometric view of a plug of a tool for detecting the sealing properties of multiple gas paths of an actuator provided in this embodiment.

[0028] Reference numerals:

[0029] 1-straight-through connector, 2-plug, 3-plug pressure plate, 31-first plug pressure plate, 32-second plug pressure plate, 4-first O-ring, 5-second O-ring, 6-screw, 7-first air path, 8-second air path, 9-first air hole, 10-second air hole, 11-first groove, 12-second groove, 13-step surface. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] The utility model is further described in detail below with reference to the accompanying drawings:

[0038] Example

[0039] As described in the background technology, for the sealing test of multiple gas paths of the actuator, during the assembly process, it is necessary to perform sealing tests on each single gas path of the actuator one by one. Figure 1 As shown, the actuator has two gas paths to be tested, the first gas path 7 and the second gas path 8, and they need to be tested one by one. This requires that when testing one of them, the other needs to be blocked. That is to say, when testing the sealing of the second gas path 8, the test gas must not pass through the first gas path 7 to prevent the two gas paths from mixing with each other. The first gas path 7 needs to be blocked. Obviously, the existing testing tooling cannot meet the above requirements.

[0040] In order to solve the above problems, the present embodiment provides a multi-gas circuit sealing detection tool for an actuator. The use of this detection tool can meet the requirements of performing sealing inspection on each single gas circuit of the actuator one by one after the actuator is assembled with the cylinder and other seals, thereby increasing the sealing performance inspection during the assembly process, that is, the early inspection of the sealing of multiple gas circuits of the actuator, which greatly reduces the return of assembly products due to gas circuit sealing problems and reduces the return rate of finished products.

[0041] like Figure 2 As shown, the actuator multi-gas path sealing detection tool provided in this embodiment specifically includes:

[0042] The straight connector 1, the plug 2, the first O-ring 4, the second O-ring 5, the first air hole 9 and the second air hole 10 have the following specific structures and assembly relationships:

[0043] like Figure 2 and Figure 3As shown, a plug 2 is provided, and the plug 2 is preferably made of stainless steel to improve corrosion resistance; in the axial direction of the plug 2, two sealing ring grooves are opened according to the size of the pneumatic piston dynamic sealing groove, namely the first groove 11 and the second groove 12; the first groove 11 and the second groove 12 are correspondingly installed with the first O-ring 4 and the second O-ring 5; the bottom end of the plug 2 adopts a step structure, and the step structure is integrally composed of two large and small cylinders of different diameters, and the small cylinder is located at the bottom of the plug 2. The step structure is designed to better adapt to the inner cavity of the actuator, and its inner cavity is a step hole structure; the plug 2 is passed through the step hole where the two air paths converge, and the two O-rings act on the upper and lower walls of the step hole to form an axial seal, so as to seal and block the first air path 7 and the second air path 8 on the upper and lower sides of the step hole.

[0044] In this embodiment, Figure 2 and Figure 3 As shown, a thin central hole (i.e., airway) is arranged inside the plug 2, and two small air holes (a first air hole 9 and a second air hole 10) are arranged below the side of the plug 2 to communicate with the airway. At this time, the two air holes are just in the cavity blocked by the two O-rings. The upper part of the plug 2 is provided with a thread, on which a straight-through connector 1 of an air pipe is installed, which is used for inflating and exhausting when testing the airtightness of the airway.

[0045] Here, the reason for using two air holes is to increase the speed of inflation and exhaust. Since the diameter of the air holes is small, in order to improve the detection efficiency, two air holes, a first air hole 9 and a second air hole 10, are opened.

[0046] In this embodiment, Figure 4 As shown, in order to prevent the plug 2 from being installed in the step hole of the actuator due to excessive air pressure, which causes the plug 2 to fall out, a step structure composed of two large and small cylinders of different diameters is provided on the outer wall of the plug 2, and a plug pressure plate 3 is provided to act on the outer wall of the plug 2 (specifically, the top end face of the large cylinder), and the plug pressure plate 3 (the first plug pressure plate 31 and the second plug pressure plate 32) is fixed to the actuator by screws 6 (preferably hexagon socket head screws), thereby limiting the position of the plug 2.

[0047] In this embodiment, Figure 3 As shown, in order to facilitate the removal of the plug 2 from the step hole where the two airways converge after testing the sealing of the tested air path, two step surfaces 13 are opened on the plug 2 to facilitate the operator to find the force application point and remove the plug 2.

[0048] The working principle of the multi-gas-path sealing detection tool for an actuator provided in this embodiment is as follows:

[0049] like Figure 4 and Figure 5As shown, the second air path 8 is tested this time. When in use, the actuator multi-air path sealing detection tooling is placed on the actuator, and multiple plugs 2 are inserted into the step holes where all the air paths to be tested converge. Then, the plug pressing plate 3 is applied to the step surfaces of the outer walls of all the plugs 2, and the plug pressing plate 3 is fixed to the actuator by screws 6. At this time, the second air path 8 is connected with the first air hole 9 and the second air hole 10 of the plug 2, and the first air path 7 is isolated and blocked by the plug 2; the air pipe of the external air-tight equipment is directly connected to the straight-through connector 1 of the air pipe on the plug 2, the air-tight equipment is started, the air-tight detection program is run, and the air paths to be tested are sealed in turn.

[0050] In summary, the utility model provides a multi-gas-path sealing detection tool for an actuator, which has the following advantages over the existing detection tool:

[0051] This testing tool adopts a plug, and an air channel is provided inside the plug, and the air channel is communicated with a straight-through joint connected to the plug; the end of the plug adopts a step structure composed of two large and small cylinders of different diameters, which is adapted to the step inner cavity of the actuator, and sealing rings are sleeved on the two cylinders, and at least one air hole connected to the air channel is provided on the bottom end face of the large cylinder. When performing a sealing test, the outer walls of the two cylinders form axial seals with the inner cavity of the actuator respectively, and the bottom end face of the large cylinder forms an air cavity with the inner cavity of the actuator, and the air cavity is communicated with the air path to be tested of the actuator to be tested; the air path to be blocked is isolated by the axial seal, and the air hole is used to realize the inflation test of the air path to be tested, which can meet the sealing inspection of each single air path of the actuator one by one, increase the sealing performance test during the assembly process, and can detect the sealing of multiple air paths of the actuator in advance, which can effectively prevent the leakage of a single air path or the phenomenon of cross-gas in multiple air paths, greatly reduce the return of assembly products due to air path sealing problems, and reduce the return rate of finished products.

[0052] The above embodiment is only one of the implementation methods that can realize the technical solution of the utility model. The scope of protection required by the utility model is not limited only to this embodiment, but also includes within the technical scope disclosed by the utility model, any changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field.

Claims

1. A multi-gas-path sealing detection tool for an actuator, characterized in that: including a plug (2); An air passage is provided inside the plug (2), one end of the plug (2) is connected to a straight-through connector (1), and the straight-through connector (1) is in communication with the air passage; The other end of the plug (2) adopts a step structure, and the step structure is integrally formed by two large and small cylinders with different diameters, and the small cylinder is located at the bottom end of the plug (2); The two cylinders are both provided with sealing rings, and the bottom end surface of the large cylinder is provided with at least one air hole, which is connected with the air passage; When performing a sealing test, the outer walls of the two cylinders and the inner cavity of the actuator respectively form an axial seal, the bottom end surface of the large cylinder and the inner cavity of the actuator form an air cavity, and the air cavity is connected to the air path of the actuator to be tested.

2. The multi-gas-path sealing detection tool for actuators according to claim 1 is characterized in that: A first groove (11) is provided on the circumference of the large cylinder, and a first O-ring (4) is sleeved in the first groove (11).

3. The multi-gas-path sealing detection tool for actuators according to claim 1 is characterized in that: A second groove (12) is provided on the circumference of the small cylinder, and a second O-ring (5) is sleeved in the second groove (12).

4. The multi-gas-path sealing detection tool for actuators according to claim 1 is characterized in that: A step surface (13) is provided on the outer wall of the plug (2).

5. The multi-gas-path sealing detection tool for actuators according to claim 1 is characterized in that: When performing a sealing test, the plug (2) is inserted into the plug pressure plate (3).

6. The multi-gas-path sealing detection tool for actuators according to claim 5, characterized in that: The plug pressure plate (3) is fixed to the actuator by means of screws (6).

7. The multi-gas-path sealing detection tool for actuators according to claim 6 is characterized in that: The screw (6) is a hexagon socket head screw.

8. The multi-gas-path sealing detection tool for actuators according to claim 1 is characterized in that: A first air hole (9) and a second air hole (10) are provided on the bottom end surface of the large cylinder.

9. The multi-gas-path sealing detection tool for actuators according to claim 1, characterized in that: The plug (2) is connected to the straight connector (1) via threads.

10. The multi-gas-path sealing detection tool for actuators according to claim 1, characterized in that: The plug (2) is made of stainless steel.

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