Arc extinguish chamber closing holding spring assembling and detecting device

Abstract

The utility model belongs to the field of special equipment specially suitable for manufacturing electric switches, and particularly relates to an arc extinguish chamber closing holding spring assembling and detecting device. In order to solve the technical problem that an arc extinguish chamber pressure spring assembly tool in the prior art cannot detect whether an elastic force applied by a closing retaining spring to a moving contact meets the requirement or not, and cannot judge whether the assembly quality of the closing retaining spring meets the requirement or not, so that whether the breaking performance of an arc extinguish chamber meets the standard or not cannot be judged. The utility model provides an arc extinguish chamber closing retaining spring assembling and detecting device which comprises a tool frame, the tool frame is provided with a support, a positioning structure and a top pressing structure, and the top pressing structure further comprises a pressure sensor used for detecting the pressure applied by the top pressing structure to a closing retaining spring. Through the pressure sensor, whether the elastic force applied by the closing retaining spring to the moving contact meets the requirement, whether the assembling quality of the closing retaining spring meets the requirement and whether the breaking performance of the arc extinguish chamber meets the standard can be judged.

Description

Technical Field

[0001] The utility model belongs to the field of special equipment specially suitable for manufacturing electric switches, in particular to an arc extinguishing chamber closing holding spring installation and inspection device. Background Art

[0002] The arc extinguishing chamber includes a moving contact and a stationary contact. The moving contact is connected to a closing holding spring, which can drive the moving contact to move and apply a closing holding force to the moving contact after the arc extinguishing chamber is closed. Therefore, the assembly quality of the closing holding spring directly affects the breaking performance of the arc extinguishing chamber.

[0003] like Figure 1-2 As shown, in the prior art, the arc extinguishing chamber 38 includes a moving contact 37 and a static contact 39, a static end threaded hole 40 is provided at the static end of the arc extinguishing chamber, and a closing holding spring assembly is installed at the moving end of the arc extinguishing chamber. The closing holding spring assembly includes a rod joint for connecting with the rod 31, a spring barrel 34, a closing holding spring 35 located in the spring barrel 34, a plug 33 for limiting the maximum release stroke of the closing holding spring 35, and a conductive seat 36 electrically connected to the moving contact of the arc extinguishing chamber. The rod joint includes a joint body for fixedly connecting with the rod 31 and a slider 32 fixedly connected with the joint body, and the slider 32 is used to squeeze the closing holding spring 35, so that the rod 31 can drive the rod joint to squeeze the closing holding spring 35.

[0004] When closing the circuit breaker, the pull rod 31 moves toward the moving contact 37. After the moving contact 37 just contacts the static contact 39, the pull rod 31 continues to compress the closing holding spring 35 so that the closing holding spring 35 applies a closing holding force to the moving contact 37. The pull rod 31 can keep the closing holding spring 35 in the maximum compression state. When opening the circuit breaker, the pull rod 31 moves in the direction away from the moving contact 37 until the pull rod joint is blocked by the plug 33. At this time, the closing holding spring 35 is in the minimum compression state.

[0005] A Chinese invention patent with authorization announcement number CN110310852B and authorization announcement date 2021.02.23 discloses an arc extinguishing chamber compression spring assembly process and assembly tooling, wherein the compression spring is a closing holding spring, and the closing holding spring can be assembled to the arc extinguishing chamber through the arc extinguishing chamber compression spring assembly tooling.

[0006] Specifically, the arc extinguishing chamber compression spring assembly tooling includes a tooling frame, on which a support for supporting and placing the arc extinguishing chamber is provided; and at least two positioning structures extending in the up-down direction are also provided on the tooling frame, and the positioning structures are used to position and cooperate with the static end threaded holes on the static end cover plate of the arc extinguishing chamber to fix the arc extinguishing chamber during the installation of the closing holding spring; the tooling frame is also provided with a pressing structure, which is used to press the arc extinguishing chamber tie rod joint downward so that the tie rod joint compresses the compression spring in the spring tube of the arc extinguishing chamber to the set maximum release stroke (that is, the closing holding spring is in the minimum compression state). The pressing structure includes a screw threadedly connected to the tooling frame, the screw extending in the up-down direction, and a pressure block is installed at the lower end of the screw, and the pressure block is used to press the tie rod joint to indirectly press the compression spring.

[0007] When installing the compression spring on the arc extinguishing chamber using the arc extinguishing chamber compression spring assembly tool, first fix the arc extinguishing chamber by the positioning structure; then, press the pull rod joint downward by the pressing structure, thereby indirectly pressing the compression spring, so that the compression spring is compressed to the set maximum release stroke; finally, by fixing and assembling a fixed stopper (i.e., a plug) that cooperates with the pull rod joint stopper on the spring cylinder, the compression spring is limited to its maximum release stroke, and the assembly of the compression spring is completed. However, when installing the compression spring on the arc extinguishing chamber using the arc extinguishing chamber compression spring assembly tool, it is impossible to detect whether the elastic force applied by the closing holding spring to the moving contact meets the requirements, and it is also impossible to determine whether the assembly quality of the closing holding spring meets the requirements, and thus it is impossible to determine whether the breaking performance of the arc extinguishing chamber meets the standards. Utility Model Content

[0008] The purpose of the utility model is to provide an arc extinguishing chamber closing holding spring assembly and inspection device to solve the technical problem that the arc extinguishing chamber compression spring assembly tooling in the prior art cannot detect whether the elastic force applied by the closing holding spring to the moving contact meets the requirements, and also cannot judge whether the assembly quality of the closing holding spring meets the requirements, thereby unable to judge whether the breaking performance of the arc extinguishing chamber meets the standards.

[0009] In order to achieve the above-mentioned purpose, the technical solution of the arc extinguishing chamber closing holding spring installation and inspection device provided by the utility model is:

[0010] A device for assembling and inspecting a closing holding spring of an arc extinguishing chamber comprises a tool frame, on which a support, a positioning structure and a top-pressing structure are arranged. The top-pressing structure also comprises a pressure sensor for detecting the pressure exerted by the top-pressing structure on the closing holding spring.

[0011] Furthermore, a pressure detection piece for directly pressing downward the closing holding spring is detachably installed at the lower end of the pressing structure, and the outer diameter of the pressure detection piece is smaller than the inner diameter of the corresponding spring tube; an indicator mark is provided on the outer peripheral surface of the pressure detection piece for judging the compression amount of the closing holding spring.

[0012] Furthermore, the pressure inspection piece includes a pressure inspection piece body and an annular protrusion arranged on the outer peripheral surface of the pressure inspection piece body, and the arc edge of the annular protrusion constitutes the indication mark.

[0013] Furthermore, the upper surface of the annular protrusion is located in a horizontal plane, and the outer arc edge and the inner arc edge of the upper surface of the annular protrusion together constitute the indication mark.

[0014] Furthermore, an indicator mark for judging the compression amount of the closing holding spring is provided on the top pressing structure.

[0015] Furthermore, the indication mark includes a first mark for indicating when the arc extinguishing chamber is just closed and a second mark for indicating when the closing holding spring is in a maximum compression state.

[0016] Furthermore, the tooling frame is provided with a display for displaying data of the pressure sensor.

[0017] Furthermore, the top pressure structure includes a screw threadedly connected to the tooling frame, the screw extending in the up and down directions, and a slew bearing is provided at the lower end of the screw, and the end of the slew bearing away from the screw is fixedly connected to the pressure sensor to avoid circumferential displacement of the pressure sensor.

[0018] Furthermore, the tooling frame includes a straightening plate for fixing the moving end of the arc extinguishing chamber, and the straightening plate is provided with a stop groove for cooperating with the moving end stopper of the moving end of the arc extinguishing chamber to prevent the arc extinguishing chamber from rotating in the circumferential direction.

[0019] Furthermore, the tooling frame includes a base and a movable bottom plate installed on the base for guiding movement, the support is arranged on the movable bottom plate, and the movable bottom plate has a first station for moving the moving end stop part away from the stop groove and a second station for moving the moving end stop part in the stop groove.

[0020] The beneficial effects of the utility model are as follows: the utility model is an improved invention. The tooling frame can provide installation space for the support, the positioning structure and the top pressure structure; the support can support and place the arc extinguishing chamber, the positioning structure can fix the arc extinguishing chamber, and the top pressure structure can compress the compression spring in the spring tube of the arc extinguishing chamber to the set maximum release stroke; the pressure sensor can measure the pressure applied by the top pressure structure to the closing holding spring, and according to Newton's third law, the elastic force of the closing holding spring can be calculated. When the top pressure structure is stationary, the elastic force of the closing holding spring is equal to the pressure applied by the top pressure structure to the closing holding spring. When using the arc extinguishing chamber closing holding spring installation and inspection device of the utility model, first, the arc extinguishing chamber is installed on the support, and the arc extinguishing chamber is fixed by the positioning structure, and the closing holding spring is installed on the arc extinguishing chamber; then, the top pressure structure moves downward to squeeze the closing holding spring, and when the top pressure structure just contacts the closing holding spring (directly contacts the closing holding spring, or indirectly contacts the closing holding spring through the pull rod joint), the initial data of the pressure sensor and the initial position of the top pressure structure are recorded; then, the top pressure structure continues to move downward, at this time, the pressure measured by the pressure sensor changes suddenly, after the top pressure structure continues to move downward a distance, the data of the pressure sensor and the position of the top pressure structure are recorded, and the compression amount of the closing holding spring is calculated according to the change of the position of the top pressure structure, and the corresponding elastic force of the closing holding spring is calculated according to the change of the data of the pressure sensor, so as to judge whether the elastic force applied by the closing holding spring to the moving contact meets the requirements, judge whether the assembly quality of the closing holding spring meets the requirements, and judge whether the breaking performance of the arc extinguishing chamber meets the standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure after the arc extinguishing chamber and the closing holding spring are assembled in the prior art;

[0022] Figure 2 A bottom view of the static end of the arc extinguishing chamber in the prior art;

[0023] Figure 3 It is a structural schematic diagram of the arc extinguishing chamber closing holding spring installation and inspection device in the utility model;

[0024] Figure 4 for Figure 3 A magnified view of the structure above the middle centralizing plate;

[0025] Figure 5 It is a structural schematic diagram of the first step of assembling an arc extinguishing chamber and a closing holding spring assembly using the arc extinguishing chamber closing holding spring assembly and inspection device of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the second step of assembling the arc extinguishing chamber and the closing holding spring assembly using the arc extinguishing chamber closing holding spring assembly and inspection device of the utility model;

[0027] Figure 7 for Figure 6 An enlarged structural diagram of the moving end stopper of the arc extinguishing chamber;

[0028] Figure 8 for Figure 6 An enlarged view of the structure of the middle straightening plate and the stopper of the moving end stopper;

[0029] Fig. 9 It is a structural schematic diagram of the third step of assembling the arc extinguishing chamber and the closing holding spring assembly using the arc extinguishing chamber closing holding spring assembly and inspection device of the utility model;

[0030] Fig.10 It is a structural schematic diagram of the fourth step of assembling the arc extinguishing chamber and the closing holding spring assembly using the arc extinguishing chamber closing holding spring assembly and inspection device of the utility model;

[0031] Fig.11 It is a structural schematic diagram of the fifth step of assembling the arc extinguishing chamber and the closing holding spring assembly using the arc extinguishing chamber closing holding spring assembly and inspection device of the utility model;

[0032] Fig.12 for Fig.11 A structural diagram of the relative positions of the central inspection joint and the spring tube;

[0033] Fig.13 It is a structural schematic diagram of the sixth step of assembling the arc extinguishing chamber and the closing holding spring assembly using the arc extinguishing chamber closing holding spring assembly and inspection device of the utility model;

[0034] Fig.14 for Fig.13 A structural diagram of the relative positions of the central inspection joint and the spring tube;

[0035] Fig.15 It is a structural schematic diagram of the seventh step of assembling an arc extinguishing chamber and a closing holding spring assembly using the arc extinguishing chamber closing holding spring assembly and inspection device of the utility model.

[0036] Description of reference numerals:

[0037] 1. Movable bottom plate; 2. Support turntable; 3. Base; 4. Guide rail; 5. Lower support rod; 6. Straightening plate; 7. Display; 8. Upper support rod; 9. Screw; 10. Slewing bearing; 11. Pressure sensor; 12. Pressure block; 13. Pressure inspection piece; 131. First mark; 132. Second mark; 14. Support plate; 31. Pull rod; 32. Slider; 33. Plug; 34. Spring tube; 35. Closing holding spring; 36. Conductive seat; 37. Moving contact; 38. Arc extinguishing chamber; 39. Static contact; 40. Static end threaded hole; 41. Moving end stopper. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the embodiments.

[0039] The specific embodiment of the arc extinguishing chamber closing holding spring installation and inspection device provided by the utility model is as follows:

[0040] The purpose of this embodiment is to provide an arc extinguishing chamber closing holding spring inspection device that can determine whether the breaking performance of the arc extinguishing chamber 38 meets the standards. By adding a pressure sensor 11 for detecting the pressure applied by the top pressure structure to the closing holding spring 35, the elastic force of the closing holding spring 35 at different compression amounts can be calculated, thereby determining whether the elastic force applied by the closing holding spring 35 to the moving contact 37 meets the requirements, determining whether the assembly quality of the closing holding spring 35 meets the requirements, and determining whether the breaking performance of the arc extinguishing chamber 38 meets the standards.

[0041] like Figure 3-15 As shown, as a specific implementation, the arc extinguishing chamber closing holding spring installation and inspection device includes a tooling frame, on which a support, a positioning structure and a top pressure structure are provided. The top pressure structure also includes a pressure sensor 11 for detecting the pressure applied by the top pressure structure to the closing holding spring 35.

[0042] Specifically, as a specific implementation method, the specific structures of the tooling frame, support, positioning structure and top pressure structure can refer to the specific structures of the tooling frame, support, positioning structure and top pressure structure in the Chinese invention patent with authorization announcement number CN110310852B and authorization announcement date 2021.02.23, and add a pressure sensor 11 on the basis of the top pressure structure of the above-mentioned invention patent, and the specific structure will not be repeated here.

[0043] The tooling frame can provide installation space for the support, the positioning structure and the top pressure structure; the support can support and place the arc extinguishing chamber 38, the positioning structure can fix the arc extinguishing chamber 38, and the top pressure structure can compress the compression spring in the spring tube 34 of the arc extinguishing chamber 38 to a set maximum release stroke; the pressure applied by the top pressure structure to the closing holding spring 35 can be measured by the pressure sensor 11, and the elastic force of the closing holding spring 35 can be calculated according to Newton's third law. When the top pressure structure is stationary, the elastic force of the closing holding spring 35 is equal to the pressure applied by the top pressure structure to the closing holding spring 35. When using the arc extinguishing chamber closing holding spring installation and inspection device of the utility model, first, the arc extinguishing chamber 38 is installed on the support, and the arc extinguishing chamber 38 is fixed by the positioning structure, and the closing holding spring 35 is installed on the arc extinguishing chamber 38; then, the top pressure structure moves downward to squeeze the closing holding spring 35, and when the top pressure structure just contacts with the closing holding spring 35 (the pressing block 12 of the top pressure structure directly contacts with the closing holding spring 35, or the pressing block 12 of the top pressure structure indirectly contacts with the closing holding spring 35 through the pull rod joint), the initial data of the pressure sensor 11 and the initial position of the top pressure structure are recorded; then, the top pressure structure continues to move downward, At this time, the pressure measured by the pressure sensor 11 changes suddenly. After the top pressure structure continues to move downward for a certain distance (which can be a specific distance or a non-specific distance), the data of the pressure sensor 11 and the position of the top pressure structure are recorded, and the compression of the closing holding spring 35 is calculated according to the change of the position of the top pressure structure. The corresponding elastic force of the closing holding spring 35 is calculated according to the data change of the pressure sensor 11, so as to judge whether the elastic force applied by the closing holding spring 35 to the moving contact 37 meets the requirements, whether the assembly quality of the closing holding spring 35 meets the requirements, and whether the breaking performance of the arc extinguishing chamber 38 meets the standards. Of course, the top pressure structure can also be moved downward for multiple times to measure more groups of data, so as to better judge whether the breaking performance of the arc extinguishing chamber 38 meets the standards.

[0044] In order to better judge the compression amount of the closing holding spring 35, as a specific implementation, an indicator mark for judging the compression amount of the closing holding spring 35 is provided on the top pressure structure. When the specifications of the installed arc extinguishing chamber 38 and the closing holding spring 35 assembly are certain, the compression amount of the closing holding spring 35 can be conveniently judged by the indicator mark, and there is no need to record the position data of the top pressure structure, thereby reducing the workload of the staff.

[0045] Specifically, Figure 3-4As shown, the tooling frame includes a support plate 14, on which a threaded hole extending in the up-down direction is provided, and the top-pressing structure includes a screw rod 9 threadedly connected to the support plate 14, the screw rod 9 extending in the up-down direction, and a slewing bearing 10 is provided at the lower end of the screw rod 9, and the end of the slewing bearing 10 away from the screw rod 9 is fixedly connected to the pressure sensor 11 to prevent the pressure sensor 11 from producing a displacement in the circumferential direction, and an indication mark is provided on the screw rod 9. The up-down movement of the top-pressing structure can be conveniently controlled by the cooperation between the screw rod 9 and the support plate 14, and the structure is simple; the slewing bearing 10 can prevent the pressure sensor 11 from rotating with the screw rod 9, and the wiring of the pressure sensor 11 is convenient, and the structure is simple; the compression amount of the closing holding spring 35 is determined by judging the relative position of the indication mark and the support plate 14, and when the support plate 14 is aligned with the indication mark, the compression amount of the closing holding spring 35 is the compression amount of the closing holding spring 35 corresponding to the indication mark.

[0046] Of course, in other specific embodiments, the top pressure structure can also be a direct-acting cylinder installed on the support plate 14, and the support plate 14 is provided with a through hole for the piston rod of the direct-acting cylinder to pass through. A pressure sensor 11 is provided below one end of the piston rod passing through the through hole, and an indicator mark can be provided on the piston rod. The closing holding spring 35 can be easily compressed by the direct-acting cylinder, and when the indicator mark is aligned with the through hole of the support plate 14, the compression amount of the closing holding spring 35 can be easily determined. Alternatively, in other specific embodiments, the top pressure structure is a structure such as an electric telescopic rod. In this embodiment, the specific structure of the top pressure structure is not limited, as long as the top pressure structure can move up and down to squeeze the closing holding spring 35.

[0047] Of course, the indicator mark may not be provided on the pressing structure. In other specific embodiments, the lower end of the pressing structure is detachably provided with a pressure-checking piece 13 for directly pressing the closing holding spring downward, and the outer diameter of the pressure-checking piece 13 is smaller than the inner diameter of the corresponding spring barrel 34; the indicator mark is provided on the outer circumferential surface of the pressure-checking piece 13. By providing the pressure-checking piece 13 and making the outer diameter of the pressure-checking piece 13 smaller than the inner diameter of the corresponding spring barrel 34, when the pressure-checking piece 13 is used to press the closing holding spring, the pressure-checking piece 13 can enter the spring barrel 34, so that the indicator mark is provided on the outer circumferential surface of the pressure-checking piece 13, which facilitates the staff to judge whether the closing holding spring 35 is in the compression amount corresponding to the indicator mark according to the relative position of the indicator mark and the spring barrel 34.

[0048] In order to improve the accuracy of the indicator mark, as a specific implementation method, Figure 10-14As shown, the pressure test piece 13 includes a pressure test piece body and an annular protrusion arranged on the outer peripheral surface of the pressure test piece body, and the arc edge of the annular protrusion constitutes the indication mark. Specifically, the arc edge refers to the upper edge and lower edge of the outer peripheral surface and the inner peripheral surface of the annular protrusion. If the annular protrusion includes not only the inner peripheral surface corresponding to the inner diameter and the outer peripheral surface corresponding to the outer diameter, but also includes an intermediate peripheral surface with a diameter larger than the inner diameter and smaller than the outer diameter, then the upper edge and lower edge corresponding to the intermediate peripheral surface also constitute the arc edge.

[0049] exist Figure 10-14 In the specific implementation manner described in , the indicator mark is the upper edge of the outer circumferential surface of the annular protrusion, that is, the arc edge corresponding to the upper edge of the outer circumferential surface of the annular protrusion constitutes the indicator mark. However, in other specific implementation manners, the indicator mark can also be at least one of the lower edge of the outer circumferential surface of the annular protrusion, the upper edge of the outer circumferential surface of the annular protrusion, the upper edge of the inner circumferential surface of the annular protrusion, the lower edge of the inner circumferential surface of the annular protrusion, the upper edge of the middle circumferential surface, and the lower edge of the middle circumferential surface. In this embodiment, there is no limitation on which specific arc edge constitutes the indicator mark. Figure 10-14 In the specific embodiment described in, there are two annular protrusions, but in other specific embodiments, there may be one, three or other numbers of annular protrusions. It should be noted that the arc edge that can be used as an indicator mark must be an arc edge that can be directly seen from the side at the same height as the arc edge. If there is a hidden arc edge that is blocked and cannot be seen, then the hidden arc edge, although it is an arc edge, cannot be used as an indicator mark. It should be noted that when the annular protrusion is a transparent structure, all arc edges can be seen, and therefore can all be used as indicator marks.

[0050] In other specific embodiments, an indicator line can also be drawn on the outer circumferential surface of the pressure inspection piece 13 along the circumference of the pressure inspection piece 13, and the color of the indicator line can form a strong contrast with the color of the pressure inspection piece 13, so as to facilitate the staff to judge the compression amount of the closing holding spring 35. Of course, in other specific embodiments, an indicator scale can also be set along the axial direction of the pressure inspection piece 13 as an indicator mark, so as to facilitate the judgment of the compression amount of the closing holding spring 35. Of course, indicator scratches can also be set on the outer circumferential surface of the pressure inspection piece 13 as an indicator mark, etc. Of course, in other specific embodiments, a pointer corresponding to the indicator mark can also be set separately on the tooling frame. In this embodiment, there is no restriction on the setting method of the indicator mark, as long as the indicator mark can cooperate with the spring tube 34 or the tooling frame and other structures to indicate the compression amount of the closing holding spring 35.

[0051] By using the arc edge of the annular protrusion as an indicator mark, when the staff observes the compression amount of the closing holding spring 35, the staff's line of sight needs to be flush with the upper surface of the spring barrel 34, and observe whether the upper surface of the spring barrel 34 and the arc edge of the annular protrusion are located on the same plane. By aligning the arc edge of the annular protrusion with the upper surface of the spring barrel 34, the compression amount of the closing holding spring 35 can be obtained. At the same time, compared with the technical solution of drawing lines, since the line has a certain width, and the arc edge of the annular protrusion is a corner edge, the width is very small compared to the line, so the arc edge can be accurately aligned with the upper surface of the spring barrel 34, reducing the error.

[0052] In order to further improve the accuracy of the indicator mark, Figure 10-14 As shown, the upper surface of the annular protrusion is located in the horizontal plane, and the outer arc edge and the inner arc edge of the upper surface of the annular protrusion together constitute the indicator mark. The outer arc edge refers to the arc edge corresponding to the outer diameter of the annular protrusion, and the inner arc edge refers to the arc edge corresponding to the inner diameter of the annular protrusion. The outer arc edge and the inner arc edge of the upper surface of the annular protrusion together constitute the indicator mark. When judging whether the indicator mark is aligned with the upper surface of the spring barrel 34, the outer arc edge and the inner arc edge of the upper surface of the annular protrusion can be observed at the same time, so that the upper surface, the outer arc edge and the inner arc edge of the spring barrel 34 are located on the same straight line, ensuring that the upper surface of the spring barrel 34 is at the same height as the indicator mark, reducing the error of human observation. Of course, in other specific embodiments, the upper surface of the annular protrusion can also be an inclined surface, and the outer arc edge of the annular protrusion constitutes the indicator mark.

[0053] In order to conveniently judge whether the breaking performance of the arc extinguishing chamber 38 meets the standard, as a specific implementation method, Figure 10-14 As shown, the indicator mark includes a first mark 131 for indicating when the arc extinguishing chamber 38 is just closed and a second mark 132 for indicating when the closing holding spring 35 is in the maximum compression state. By setting the first mark 131 and the second mark 132, it is possible to conveniently judge the magnitude of the elastic force of the closing holding spring 35 when the arc extinguishing chamber 38 is just closed and the magnitude of the elastic force of the closing holding spring 35 when the closing holding spring 35 is in the maximum compression state, thereby conveniently judging whether the elastic force applied by the closing holding spring 35 to the moving contact 37 meets the requirements, and further judging whether the assembly quality of the closing holding spring 35 meets the requirements and whether the breaking performance of the arc extinguishing chamber 38 meets the standards.

[0054] Of course, in other specific embodiments, the first mark 131 and the second mark 132 may not be set. On the one hand, the elastic force of the closing holding spring 35 when the arc extinguishing chamber 38 is just closed and the elastic force of the closing holding spring 35 when the closing holding spring 35 is in the maximum compression state can be determined according to the displacement of the top pressure structure; on the other hand, the indicator mark may also correspond to other states of the closing holding spring 35, for example, the maximum release state of the closing holding spring 35, the length of the closing holding spring 35 is equal to half of the sum of the length of the closing holding spring 35 in the maximum release state and the length of the closing holding spring 35 in the maximum compression state. Of course, the indicator mark may also correspond to other states of the closing holding spring 35. In this embodiment, there is no restriction on the compression amount of the closing holding spring 35 corresponding to the indicator mark, as long as the indicator mark can facilitate the staff to judge the compression amount of the closing holding spring 35. Since the elastic coefficient of the closing holding spring 35 is constant, the elastic force of the closing holding spring 35 at different compression amounts can be used to obtain the elastic force of the closing holding spring 35 in the maximum compression state, and the elastic force of the closing holding spring 35 when the arc extinguishing chamber 38 is just closed can also be calculated.

[0055] In order to conveniently observe the data of the pressure sensor 11, as a specific implementation method, Figure 3 As shown, a display 7 for displaying the data of the pressure sensor 11 is provided on the tooling frame. The data of the pressure sensor 11 can be conveniently observed through the display 7. Of course, in other specific embodiments, the pressure sensor 11 can also transmit the data to the computer, and the computer directly determines whether the elastic force of the closing holding spring 35 on the moving contact 37 meets the requirements. The computer can be set on the tooling frame, or on the ground around the tooling frame or in a remote server, as long as the computer can transmit the data results to the staff.

[0056] In order to better prevent the arc extinguishing chamber 38 from rotating, as a specific implementation method, Figure 6-8 As shown, the fixture frame includes a straightening plate 6 for fixing the moving end of the arc extinguishing chamber 38, and a stop groove is provided on the straightening plate 6 for stopping and cooperating with the moving end stopper 41 of the moving end of the arc extinguishing chamber 38 to prevent the arc extinguishing chamber 38 from rotating in the circumferential direction. The stop groove and the moving end stopper 41 can further prevent the arc extinguishing chamber 38 from rotating in the circumferential direction of the arc extinguishing chamber 38, thereby ensuring that the assembly process of the arc extinguishing chamber 38 meets the assembly requirements.

[0057] Of course, in other specific embodiments, the straightening plate 6 may not be provided, and only the positioning structure may be used to prevent the arc extinguishing chamber 38 from rotating; or, the structure of the straightening plate 6 may refer to the straightening plate 6 in the Chinese invention patent with authorization announcement number CN110310852B and authorization announcement date 2021.02.23, and the specific structure will not be repeated here.

[0058] In order to facilitate the installation of the arc extinguishing chamber 38 on the support, as a specific implementation method, Figure 3-6 As shown, the tooling frame includes a base 3 and a movable bottom plate 1 which is movably mounted on the base 3, a support is arranged on the movable bottom plate 1, and the movable bottom plate 1 has a first position for moving the moving end stopper 41 away from the stopper groove and a second position for moving the moving end stopper 41 in the stopper groove. The movable bottom plate 1 which is movably mounted on the base 3 is arranged, and the support is arranged on the movable bottom plate 1. When the arc extinguishing chamber 38 is installed on the support, the movable bottom plate 1 can be moved first to be in the first position, so as to increase the installation space of the arc extinguishing chamber 38 and facilitate the installation of the arc extinguishing chamber 38; after the arc extinguishing chamber 38 is installed, the movable bottom plate 1 is moved again to be in the second position to fix the arc extinguishing chamber 38. In different specific embodiments, the movable bottom plate 1 and the base 3 can be guided to slide with the channel slide rail and the slider 32, or guided to roll with the roller and the guide rail 4. In this embodiment, the guided movable cooperation between the movable bottom plate 1 and the base 3 is not limited.

[0059] Specifically, the tooling frame includes a base 3, a movable bottom plate 1 that is guided and movably matched with the base 3, and a support turntable 2 arranged on the movable bottom plate 1. A lower support rod 5 is arranged on the base 3, and a straightening plate 6 is arranged above the lower support rod 5. A display 7 is arranged on the straightening plate 6, and an upper support rod 8 is also arranged on the straightening plate 6. A support plate 14 is arranged on the upper support rod 8, and the support turntable 2 is a support. The positioning structure is a positioning pin arranged on the support turntable 2, and the positioning pin is positioned and matched with the static end threaded hole 40 of the static end of the arc extinguishing chamber 38. Of course, in other specific embodiments, the positioning structure can also be a positioning pin hole arranged on the support turntable 2, and an intermediate pin is inserted into the positioning pin hole, and the intermediate pin is positioned and matched with the static end threaded hole 40 of the static end of the arc extinguishing chamber 38. The support turntable 2 is arranged, and the arc extinguishing chamber 38 is fixed on the support turntable 2, so that the arc extinguishing chamber 38 can be easily rotated, and the moving end stopper 41 of the moving end of the arc extinguishing chamber 38 is stopped and matched with the stop groove on the straightening plate 6.

[0060] Of course, in other specific embodiments, the support turntable 2 may not be provided, and the positioning structure may be directly provided on the movable bottom plate 1, so that the movable bottom plate 1 serves as a support. Alternatively, the movable bottom plate 1 is not provided, and a support is provided on the base 3, and the positioning structure is not provided on the support, but the support is provided in a grid shape and the positioning structure is provided on the tooling frame with reference to the structure in the Chinese invention patent with the authorization announcement number CN110310852B and the authorization announcement date 2021.02.23.

[0061] As a specific implementation method, Figure 5-15 As shown, when the arc extinguishing chamber 38 and the closing holding spring 35 are assembled together, the assembly is mainly divided into seven steps.

[0062] First step: If Figure 5 As shown, the movable bottom plate 1 is moved to be in the first position, and the arc extinguishing chamber 38 is installed on the supporting turntable 2 (i.e., the support);

[0063] Step 2: If Figure 6-8 As shown, the movable bottom plate 1 is moved to the second position so that the movable bottom plate 1 is in the second position, so that the movable end stopper 41 of the movable end of the arc extinguishing chamber 38 is engaged with the stopper groove of the straightening plate 6 to prevent rotation;

[0064] Step 3: If Fig. 9 As shown, the spring tube 34 and the conductive seat 36 are installed on the moving end of the arc extinguishing chamber 38;

[0065] Step 4: If Fig.10 As shown, the closing holding spring 35 is installed in the spring tube 34, and the pressure detection member 13 is installed at the lower end of the top pressure structure. The connection between the pressure detection member 13 and the top pressure structure can be any detachable connection method such as screw connection and pin connection, which is not limited in this embodiment;

[0066] Step 5: If Figure 11-12 As shown, the top pressure structure moves downward, and the first mark 131 of the pressure inspection member 13 is flush with the upper surface of the spring tube 34. At this time, the reading of the pressure sensor 11 in the display 7 is observed to determine whether the elastic force of the closing holding spring 35 on the moving contact 37 meets the requirements;

[0067] Step 6: If Figure 13-14 As shown, the top pressure structure continues to move downward, and the second mark 132 of the pressure inspection member 13 is flush with the upper surface of the spring tube 34. At this time, the reading of the pressure sensor 11 in the display 7 is observed to determine whether the elastic force of the closing holding spring 35 on the moving contact 37 meets the requirements;

[0068] Step 7: If Fig.15 As shown, the pressure inspection piece 13 is removed, and the pull rod joint is installed on the spring tube 34, the top pressure structure is controlled to move downward to indirectly compress the closing holding spring 35 to the maximum release state through the pull rod joint, and the plug 33 is installed to fix the closing holding spring 35. At this point, the arc extinguishing chamber 38 and the closing holding spring 35 assembly are assembled.

[0069] The reason for using the pressure inspection member 13 to detect the closing holding spring 35, rather than directly installing the pull rod joint onto the spring cylinder 34 and using the top pressure structure to press the pull rod joint to measure the elastic force of the closing holding spring 35 on the moving contact, is that when the elastic force of the closing holding spring 35 on the moving contact does not meet the requirements, it is convenient to replace a new closing holding spring 35. Of course, in other specific embodiments, the pressure inspection member 13 may not be provided, and the top pressure structure may be used to directly press the pull rod joint to measure the elastic force of the closing holding spring 35 on the moving contact.

[0070] Finally, it should be noted that the above are only preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An arc extinguishing chamber closing holding spring installation and inspection device, comprising a tool frame, on which a support, a positioning structure and a top pressure structure are provided, characterized in that: The top pressure structure also includes a pressure sensor for detecting the pressure applied by the top pressure structure to the closing holding spring. A pressure detection piece for directly pressing the closing holding spring downward is detachably installed at the lower end of the top pressure structure, and the outer diameter of the pressure detection piece is smaller than the inner diameter of the corresponding spring tube; an indicator mark for judging the compression amount of the closing holding spring is provided on the outer peripheral surface of the pressure detection piece.

2. The arc extinguishing chamber closing holding spring installation and inspection device according to claim 1, characterized in that: The pressure inspection piece comprises a pressure inspection piece body and an annular protrusion arranged on the outer peripheral surface of the pressure inspection piece body, and the arc edge of the annular protrusion constitutes the indication mark.

3. The arc extinguishing chamber closing holding spring installation and inspection device according to claim 2, characterized in that: The upper surface of the annular protrusion is located in the horizontal plane, and the outer arc edge and the inner arc edge of the upper surface of the annular protrusion together constitute the indication mark.

4. The arc extinguishing chamber closing holding spring installation and inspection device according to any one of claims 1 to 3, characterized in that: The indication mark comprises a first mark for indicating when the arc extinguishing chamber is just closed and a second mark for indicating when the closing holding spring is in a maximum compression state.

5. The arc extinguishing chamber closing holding spring installation and inspection device according to any one of claims 1 to 3, characterized in that: The tooling frame is provided with a display for displaying data of the pressure sensor.

6. The arc extinguishing chamber closing holding spring installation and inspection device according to any one of claims 1 to 3, characterized in that: The top pressure structure includes a screw threadedly connected to the tooling frame, the screw extending in the up and down directions, and a slewing bearing is provided at the lower end of the screw, and the end of the slewing bearing away from the screw is fixedly connected to the pressure sensor to avoid circumferential displacement of the pressure sensor.

7. The arc extinguishing chamber closing holding spring installation and inspection device according to any one of claims 1 to 3, characterized in that: The fixture frame comprises a straightening plate for fixing the moving end of the arc extinguishing chamber, and a stop groove is provided on the straightening plate for cooperating with the moving end stopper of the moving end of the arc extinguishing chamber to prevent the arc extinguishing chamber from rotating in the circumferential direction.

8. The arc extinguishing chamber closing holding spring installation and inspection device according to claim 7, characterized in that: The tooling frame includes a base and a movable bottom plate which is movably mounted on the base. The support is arranged on the movable bottom plate. The movable bottom plate has a first station for moving the moving end stop away from the stop groove and a second station for moving the moving end stop in the stop groove.

9. An arc extinguishing chamber closing holding spring installation and inspection device, comprising a fixture frame, on which a support, a positioning structure and a top pressure structure are provided, characterized in that: The top pressure structure also includes a pressure sensor for detecting the pressure applied by the top pressure structure to the closing holding spring. The top pressure structure is provided with an indicating mark for judging the compression amount of the closing holding spring.

10. The arc extinguishing chamber closing holding spring installation and inspection device according to claim 9, characterized in that: The indication mark comprises a first mark for indicating when the arc extinguishing chamber is just closed and a second mark for indicating when the closing holding spring is in a maximum compression state.

11. The arc extinguishing chamber closing holding spring installation and inspection device according to claim 9, characterized in that: The tooling frame is provided with a display for displaying data of the pressure sensor.

12. The arc extinguishing chamber closing holding spring installation and inspection device according to claim 9, characterized in that: The top pressure structure includes a screw threadedly connected to the tooling frame, the screw extending in the up and down directions, and a slewing bearing is provided at the lower end of the screw, and the end of the slewing bearing away from the screw is fixedly connected to the pressure sensor to avoid circumferential displacement of the pressure sensor.

13. The arc extinguishing chamber closing holding spring installation and inspection device according to claim 9, characterized in that: The fixture frame comprises a straightening plate for fixing the moving end of the arc extinguishing chamber, and a stop groove is provided on the straightening plate for cooperating with the moving end stopper of the moving end of the arc extinguishing chamber to prevent the arc extinguishing chamber from rotating in the circumferential direction.

14. The arc extinguishing chamber closing holding spring installation and inspection device according to claim 13, characterized in that: The tooling frame includes a base and a movable bottom plate which is movably mounted on the base. The support is arranged on the movable bottom plate. The movable bottom plate has a first station for moving the moving end stop away from the stop groove and a second station for moving the moving end stop in the stop groove.

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