Interlocking structure of cable testing device

Abstract

The utility model discloses an interlocking structure of a cable testing device, which is used for locking or unlocking a cable testing unit door and comprises a mechanism end yoke plate mechanism and an interlocking mechanism, the mechanism end yoke plate mechanism is linked with a main loop, and the interlocking mechanism is locked or unlocked with the cable testing unit door. When the interlocking mechanism and the cable test unit door are unlocked, the anti-grounding opening mechanism and the interlocking plate are locked, the cable test unit door cannot be unlocked, and when the cable test unit door is in a grounding state, the cable test unit door can be normally unlocked, so that the safety and the reliability are effectively improved. The effect of prohibiting grounding opening of the main loop under the condition that the cable test unit door is opened is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of electrical technology and relates to an interlocking structure of a cable testing device. Background Art

[0002] The test unit interface must be protected during normal operation. By designing an interlocking device for the door, it can only be opened for operation when it is in the grounded position. Otherwise, the door cannot be opened normally, or the grounding and disconnecting operation cannot be performed after the door is opened. The existing structure is relatively complex and unstable, and cannot meet the interlocking requirements of the cable test unit door. Summary of the invention

[0003] In order to overcome at least one deficiency of the prior art, the utility model provides an interlocking structure of a cable testing device.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an interlocking structure of a cable testing device, used to lock or unlock the cable testing unit door, including a mechanism end connecting plate mechanism and an interlocking mechanism, the mechanism end connecting plate mechanism is linked with the main circuit, and the interlocking mechanism is locked or unlocked with the cable testing unit door.

[0005] Furthermore, it also includes a reset device, which is connected to the mechanism end connecting plate mechanism, and the mechanism end connecting plate mechanism is moved up and reset through energy release of the reset device.

[0006] Furthermore, the interlocking mechanism includes an interlocking transmission structure, an interlocking drive structure and an interlocking fixed structure. The interlocking transmission structure is connected to the mechanism end connecting plate mechanism. The mechanism end connecting plate mechanism moves synchronously with the interlocking transmission structure. The interlocking transmission structure is connected to the interlocking drive structure. The interlocking fixed structure is arranged on the cable testing unit door. The interlocking drive structure and the interlocking fixed structure are locked or unlocked.

[0007] Furthermore, it also includes an anti-grounding tripping mechanism, the main circuit includes an interlock box, an operating shaft and a grounding shaft, the operating end of the operating shaft and the grounding end of the grounding shaft are located at the upper and lower positions of the interlock box, the interlock box includes an interlock plate, and when the interlock mechanism and the cable test unit door are locked, the anti-grounding tripping mechanism and the interlock plate are unlocked, and when the interlock mechanism and the cable test unit door are unlocked, the anti-grounding tripping mechanism and the interlock plate are locked.

[0008] Furthermore, it also includes a short-circuit interlocking mechanism, which includes an interlocking input structure and an interlocking output structure. The interlocking input structure and the interlocking output structure are connected and move synchronously. The cable testing device includes a grounding bus, the interlocking input structure is linked to the grounding bus, and the interlocking output structure is locked or unlocked with the cable testing unit door.

[0009] Furthermore, the cable testing device is installed in a cabinet, and the cabinet is provided with a frame and a mechanism door, and the mechanism door is hinged to the cable testing unit door.

[0010] Furthermore, the interlocking mechanism includes a transverse lock bracket, which is fixed to the mechanism door, and the interlocking drive structure is arranged on the transverse lock bracket and is slidably connected to the transverse lock bracket.

[0011] Furthermore, the interlocking transmission structure includes a transverse locking push plate, one end of which is rotatably connected to the mechanism end link plate mechanism, and the other end of which is rotatably connected to the interlocking drive structure.

[0012] Furthermore, the anti-grounding tripping mechanism includes a positive lock, a synchronous crank arm and a spring. The positive lock and the synchronous crank arm are connected and move synchronously. The spring is arranged on the synchronous crank arm, and the interlocking plate is provided with a slot. The synchronous crank arm is connected or disengaged with the slot by a buckle.

[0013] Furthermore, the short-circuit interlocking mechanism also includes a rotating bracket, which is fixedly connected to the frame, and the interlocking input structure and the interlocking output structure are rotatably connected to the rotating bracket. The interlocking input structure includes a rotating plate, which is rotatably connected to the rotating bracket, and the interlocking output structure includes a buckle plate, which is fixedly connected to the rotating plate, and the two rotate synchronously.

[0014] In summary, the utility model is beneficial in that:

[0015] 1) The interlocking mechanism of the utility model makes the cable test unit door locked and unable to be opened when in an ungrounded state, and unlocked and able to be opened normally when in a grounded state, thereby effectively improving safety and reliability.

[0016] 2) In the utility model, when the interlocking mechanism and the cable test unit door are unlocked, the anti-grounding tripping mechanism and the interlocking plate are locked, thereby achieving the effect of prohibiting the main circuit grounding tripping when the cable test unit door is open.

[0017] 3) The utility model locks or unlocks the interlock output structure and the cable test unit door through the linkage between the interlock input structure and the grounding bar, thereby achieving the effect of prohibiting the cable test unit door from being closed when the grounding bar is not installed.

[0018] 4) The interlocking structure of the utility model is entirely hidden inside the cabinet, so it cannot be directly destroyed by external tools, thereby improving safety.

[0019] 5) The interlocking mechanism, anti-grounding tripping mechanism and short-circuit interlocking mechanism of the utility model are modularly installed and are independent of each other, which effectively improves the reliability and stability of the structure. The parts have a simple structure and are easy to process and have the advantages of low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the interlocking structure and cable testing device of the utility model.

[0021] Figure 2 This is a schematic diagram of unlocking the cable test unit door using the interlocking structure of the utility model.

[0022] Figure 3 This is a schematic diagram of locking the cable test unit door using the interlocking structure of the utility model.

[0023] Figure 4 It is an exploded schematic diagram of the anti-grounding tripping mechanism of the utility model.

[0024] Figure 5 It is a schematic diagram of the anti-grounding tripping mechanism and the unlocking of the interlocking plate of the utility model.

[0025] Figure 6 It is a schematic diagram of the locking of the anti-grounding tripping mechanism and the interlocking plate of the utility model.

[0026] Figure 7 It is a schematic diagram of locking the short-circuit interlocking mechanism and the cable test unit door of the utility model.

[0027] Figure 8 It is a schematic diagram of the short-circuit interlocking mechanism and the cable test unit door unlocking of the utility model.

[0028] Markings in the figure: mechanism end connecting plate mechanism 1, interlocking mechanism 2, cable testing device 3, short-circuit interlocking mechanism 4, reset device 6, anti-grounding tripping mechanism 7, cable testing unit door 8, interlocking box 9, connecting rod 10, mechanism end connecting plate 11, transverse lock bracket 21, transverse lock push plate 22, lock tongue bracket 23, transverse lock connecting plate 24, grounding bar 31, rotating bracket 41, buckle plate 42, rotating plate 43, frame 51, mechanism door 52, reset spring 61, reset rod 62, limit box 71, positive lock 72, spring 73, synchronous crank arm 74, interlocking plate 91, lock slot 231, lock plate 741, card slot 911. DETAILED DESCRIPTION

[0029] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0030] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0031] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the vertical relationship may actually be an approximately vertical relationship.

[0033] Embodiment 1:

[0034] like Figure 1-Figure 8 As shown, an interlocking structure of a cable testing device is used to lock or unlock the cable testing unit door 8, including a mechanism end connecting plate mechanism 1 and an interlocking mechanism 2, wherein the mechanism end connecting plate mechanism 1 is linked to the main circuit, and the interlocking mechanism 2 is locked or unlocked with the cable testing unit door 8.

[0035] The cable testing device 3 is installed in the cabinet, and the location of the cable testing device 3 is set as a cable testing room. The cable testing room is provided with a frame 51 and a mechanism door 52. The mechanism door 52 is provided with a cable testing unit door 8. The mechanism door 52 is hinged to the cable testing unit door 8. The cable testing unit door 8 can be opened to perform cable testing.

[0036] like Figure 1 As shown, to facilitate the description of the orientation of this embodiment, a coordinate system is established, the x direction is set as the front-to-back direction, the positive direction of x is forward, and the negative direction of x is backward; the y direction is set as the left-to-right direction, the positive direction of y is left, and the negative direction of y is right; the z direction is set as the up-down direction, the positive direction of z is upward, and the negative direction of z is downward.

[0037] The mechanism end connecting plate mechanism 1 includes a connecting rod 10 and a mechanism end connecting plate 11. The connecting rod 10 is linked with the main circuit (not shown in the figure). The connecting rod 10 and the mechanism end connecting plate 11 are connected. The non-grounding operation of the main circuit drives the connecting rod 10 and the mechanism end connecting plate 11 to move downward, and the interlocking mechanism 2 locks the cable test unit door 8. The grounding operation of the main circuit disconnects it from the connecting rod 10, and the interlocking mechanism 2 unlocks the cable test unit door 8.

[0038] The interlocking structure also includes a reset device 6, which is connected to the mechanism end connecting plate mechanism 1. When the main circuit is grounded, the reset device 6 releases energy to move the mechanism end connecting plate mechanism 1 upward and reset.

[0039] The reset device 6 includes a reset spring 61 and a reset rod 62. The reset rod 62 is connected to the mechanism end connecting plate 11 of the mechanism end connecting plate mechanism 1. The reset rod 62 moves synchronously with the mechanism end connecting plate 11 of the mechanism end connecting plate mechanism 1. The reset spring 61 is sleeved on the reset rod 62. The two ends of the reset spring 61 are respectively connected to the mechanism end connecting plate 11 and the frame 51 of the cabinet. The non-grounding operation of the main circuit drives the mechanism end connecting plate mechanism 1 to move downward, and the reset rod 62 moves downward synchronously. The reset spring 61 is compressed to store energy, and the interlocking mechanism 2 locks the cable test unit door 8. The grounding operation of the main circuit disconnects it from the connecting rod 10, and the reset spring 61 resets and releases energy, driving the mechanism end connecting plate mechanism 1 to move upward, and the interlocking mechanism 2 unlocks the cable test unit door 8.

[0040] The reset rod 62 is slidably connected to the frame 51 to prevent the reset rod 62 and the mechanism end link plate mechanism 1 from being offset in the reset movement direction.

[0041] The interlocking mechanism 2 includes an interlocking transmission structure, an interlocking drive structure and an interlocking fixed structure. The interlocking transmission structure is connected to the mechanism end connecting plate mechanism 1, and the interlocking transmission structure is connected to the interlocking drive structure. The interlocking fixed structure is arranged on the cable testing unit door 8. The interlocking drive structure and the interlocking fixed structure are locked or unlocked. The mechanism end connecting plate mechanism 1 moves synchronously with the interlocking transmission structure. The up and down movement of the mechanism end connecting plate mechanism 1 drives the interlocking drive structure to move left and right through the interlocking transmission structure. Specifically, the mechanism end connecting plate mechanism 1 moves upward to drive the interlocking drive structure to move to the left, and the interlocking drive structure disengages from the interlocking fixed structure to unlock the cable testing unit door 8. The mechanism end connecting plate mechanism 1 moves downward to drive the interlocking drive structure to move to the right, and the interlocking drive structure is engaged with the interlocking fixed structure to lock the cable testing unit door 8.

[0042] The interlocking mechanism 2 includes a transverse locking bracket 21 , which is fixed to the mechanism door 52 , and an interlocking driving structure is disposed on the transverse locking bracket 21 and is slidably connected to the transverse locking bracket 21 .

[0043] The interlocking transmission structure comprises a transverse locking push plate 22, one end of which is rotatably connected to the mechanism end link plate 11 of the mechanism end link plate mechanism 1, and the other end of which is rotatably connected to the interlocking driving structure.

[0044] The interlocking driving structure includes a transverse locking plate 24 , which is rotatably connected to the transverse locking push plate 22 . The transverse locking plate 24 is disposed on the transverse locking bracket 21 and is slidably connected to the transverse locking bracket 21 .

[0045] The interlocking fixing structure includes a lock tongue bracket 23, which is arranged on the cable test unit door 8. The lock tongue bracket 23 is provided with a lock slot 231. The position of the lock slot 231 is opposite to the interlocking driving structure. The transverse locking plate 24 moves to the right and is inserted into the lock slot 231 to lock the lock tongue bracket 23, thereby locking the cable test unit door 8. The transverse locking plate 24 moves to the left and exits the lock slot 231 to unlock the lock tongue bracket 23, thereby unlocking the cable test unit door 8. At this time, the cable test unit door 8 is locked and cannot be opened when it is not grounded, and is unlocked and can be opened normally when it is grounded.

[0046] The main circuit includes an interlock box 9, an operating shaft (not shown in the figure) and a grounding shaft (not shown in the figure). The operating shaft and the grounding shaft are distributed up and down. The operating end of the operating shaft and the grounding end of the grounding shaft are located at the upper and lower positions of the interlock box 9. The interlock box 9 includes an interlock plate 91. When the main circuit is not grounded, the interlock plate 91 moves down to expose the operating end of the operating shaft for operation. When the main circuit is grounded, the interlock plate 91 moves up to expose the grounding end of the grounding shaft for operation.

[0047] The interlocking structure also includes an anti-grounding tripping mechanism 7, which is locked or unlocked with the interlocking plate 91. When the interlocking mechanism 2 is locked with the cable test unit door 8, the anti-grounding tripping mechanism 7 is unlocked with the interlocking plate 91. When the interlocking mechanism 2 is unlocked with the cable test unit door 8, the anti-grounding tripping mechanism 7 is locked with the interlocking plate 91, thereby achieving the effect of prohibiting the main circuit grounding tripping when the cable test unit door 8 is open.

[0048] The anti-grounding tripping mechanism 7 includes a positive lock 72, a synchronous crank arm 74 and a spring 73. The positive lock 72 and the synchronous crank arm 74 are connected and move synchronously. The spring 73 is arranged on the synchronous crank arm 74. The interlocking plate 91 is provided with a card slot 911. The synchronous crank arm 74 is snap-connected or disengaged with the card slot 911. When the cable test unit door 8 is opened, the spring 73 releases energy to drive the positive lock 72 to move forward so that the synchronous crank arm 74 snaps into the card slot 911 to lock the interlocking plate 91. When the cable test unit door 8 is closed, the positive lock 72 is pushed to move backward and the spring 73 is compressed, so that the positive lock 72 is disengaged from the card slot 911 to unlock the interlocking plate 91.

[0049] The anti-grounding tripping mechanism 7 also includes a limit box 71, which is fixedly connected to the cable test unit door 8, and a positive lock 72 and a synchronous crank arm 74 are slidably connected to the limit box 71. A spring 73 is sleeved on the synchronous crank arm 74, and the spring 73 is located between the synchronous crank arm 74 and the end wall of the limit box 71. When the positive lock 72 drives the synchronous crank arm 74 to move backward, the compressed spring 73 is moved, and the spring 73 releases energy to drive the positive lock 72 to move forward.

[0050] The synchronous crank arm 74 is provided with a locking plate 741 , and the position of the locking plate 741 is opposite to the locking slot 911 .

[0051] The cable testing device 3 includes a grounding bar 31, which is installed at a set position of the frame 51. The grounding bar 31 needs to be removed when performing cable testing, and then the grounding bar 31 is reinstalled after the cable testing is completed. In order to avoid closing the cable testing unit door 8 when the grounding bar 31 is not installed, the interlocking structure also includes a short-circuit interlocking mechanism 4.

[0052] The short-circuit interlocking mechanism 4 includes an interlocking input structure and an interlocking output structure. The interlocking input structure and the interlocking output structure are connected and move synchronously. The interlocking input structure is linked with the grounding bus 31. The interlocking output structure is locked or unlocked with the cable test unit door 8. When the interlocking output structure is locked with the cable test unit door 8, the cable test unit door 8 cannot be closed. When the interlocking output structure is unlocked with the cable test unit door 8, the cable test unit door 8 can be closed.

[0053] The short-circuit interlocking mechanism 4 further includes a rotating bracket 41 , the rotating bracket 41 is fixedly connected to the frame 51 , and the interlocking input structure and the interlocking output structure are rotatably connected to the rotating bracket 41 .

[0054] The interlocking input structure includes a rotating plate 43, which is rotatably connected to the rotating bracket 41. The interlocking output structure includes a buckle plate 42, which is fixedly connected to the rotating plate 43, and the two rotate synchronously.

[0055] like Figure 7 As shown, when the grounding bar 31 is installed, the rotating plate 43 is set at its lower end, and the buckle plate 42 is rotated and flipped upward to increase the distance with the cable test unit door 8 to unlock it. At this time, the cable test unit door 8 can be closed. When the grounding bar 31 is removed, the buckle plate 42 is rotated and flipped downward by its own gravity or the action of a spring to reduce the distance with the cable test unit door 8 to lock it. At this time, the cable test unit door 8 cannot be closed.

[0056] By controlling the angle of the pinch plate 42 when it is rotated upward or downward, the distance between the end surface of the pinch plate 42 and the cable test unit door 8 when it is not opened can be controlled.

[0057] In this embodiment, the rotating plate 43 and the buckle plate 42 are integrally formed.

[0058] During the implementation of this embodiment, when the main circuit is not grounded, the control mechanism end connecting plate mechanism 1 moves downward, and the interlocking mechanism 2 locks the cable test unit door 8. When the main circuit is grounded, the reset device 6 releases energy to move the mechanism end connecting plate mechanism 1 upward and reset it, and the interlocking mechanism 2 unlocks the cable test unit door 8, so that the cable test unit door 8 is locked and cannot be opened when it is not grounded, and the cable test unit door 8 is unlocked and can be opened normally when it is grounded; when the interlocking mechanism 2 is unlocked from the cable test unit door 8, the anti-grounding tripping mechanism 7 is locked from the interlocking plate 91, so that the main circuit grounding tripping is prohibited when the cable test unit door 8 is open; and through the linkage between the interlocking input structure and the grounding bar 31, the interlocking output structure is locked or unlocked from the cable test unit door 8, so that the cable test unit door 8 is prohibited from closing when the grounding bar 31 is not installed.

[0059] The interlocking structure of the present application is hidden as a whole inside the cabinet, so it cannot be directly destroyed by external tools, which improves safety; the interlocking mechanism 2, the anti-grounding tripping mechanism 7 and the short-circuit interlocking mechanism 4 of the present application are modularly installed and independent of each other, which effectively improves the reliability and stability of the structure, and the component structure is simple, with the advantages of easy processing and low cost.

[0060] The interlocking structure in this embodiment can be used alone in existing equipment, and the main circuit, interlocking box and other unexplained structures use existing components and are not described here.

[0061] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. An interlocking structure of a cable testing device, used to lock or unlock a cable testing unit door, characterized in that: It includes a mechanism end connecting plate mechanism and an interlocking mechanism. The mechanism end connecting plate mechanism is linked with the main circuit. The interlocking mechanism is locked or unlocked with the cable test unit door. The interlocking mechanism includes an interlocking transmission structure, an interlocking drive structure and an interlocking fixed structure. The interlocking transmission structure is connected with the mechanism end connecting plate mechanism. The mechanism end connecting plate mechanism moves synchronously with the interlocking transmission structure. The interlocking transmission structure is connected with the interlocking drive structure. The interlocking fixed structure is arranged on the cable test unit door. The interlocking drive structure and the interlocking fixed structure are locked or unlocked.

2. The interlocking structure of a cable testing device according to claim 1, characterized in that: It also includes a reset device, which is connected to the mechanism end connecting plate mechanism, and the mechanism end connecting plate mechanism is moved up and reset through energy release of the reset device.

3. The interlocking structure of a cable testing device according to claim 1, characterized in that: It also includes an anti-grounding tripping mechanism, the main circuit includes an interlock box, an operating shaft and a grounding shaft, the operating end of the operating shaft and the grounding end of the grounding shaft are located at the upper and lower positions of the interlock box, the interlock box includes an interlocking plate, when the interlocking mechanism and the cable test unit door are locked, the anti-grounding tripping mechanism and the interlocking plate are unlocked, when the interlocking mechanism and the cable test unit door are unlocked, the anti-grounding tripping mechanism and the interlocking plate are locked.

4. The interlocking structure of a cable testing device according to claim 1, characterized in that: It also includes a short-circuit interlocking mechanism, which includes an interlocking input structure and an interlocking output structure. The interlocking input structure and the interlocking output structure are connected and move synchronously. The cable testing device includes a grounding bus. The interlocking input structure is linked to the grounding bus, and the interlocking output structure is locked or unlocked with the cable testing unit door.

5. The interlocking structure of a cable testing device according to claim 1, characterized in that: The cable testing device is installed in a cabinet, and the cabinet is provided with a frame and a mechanism door, and the mechanism door is hinged with the cable testing unit door.

6. The interlocking structure of a cable testing device according to claim 5, characterized in that: The interlocking mechanism comprises a transverse lock bracket, which is fixed to the mechanism door, and an interlocking drive structure is arranged on the transverse lock bracket and is slidably connected to the transverse lock bracket.

7. The interlocking structure of a cable testing device according to claim 1, characterized in that: The interlocking transmission structure comprises a transverse locking push plate, one end of which is rotatably connected to the mechanism end link plate mechanism, and the other end of which is rotatably connected to the interlocking driving structure.

8. The interlocking structure of a cable testing device according to claim 3, characterized in that: The anti-grounding tripping mechanism includes a positive lock, a synchronous crank arm and a spring. The positive lock and the synchronous crank arm are connected and move synchronously. The spring is set on the synchronous crank arm, and the interlocking plate is provided with a slot. The synchronous crank arm is connected or disengaged with the slot by a buckle.

9. The interlocking structure of a cable testing device according to claim 4, characterized in that: The short-circuit interlocking mechanism also includes a rotating bracket, which is fixedly connected to the frame, and the interlocking input structure and the interlocking output structure are rotatably connected to the rotating bracket. The interlocking input structure includes a rotating plate, which is rotatably connected to the rotating bracket, and the interlocking output structure includes a buckle plate, which is fixedly connected to the rotating plate, and the two rotate synchronously.

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