Primary flow test auxiliary tool

Abstract

The invention discloses a current-through test auxiliary tool, which relates to the field of current-through test detection, and comprises a telescopic insulating rod and a testing mechanism; the testing mechanism is fixed at the top end of the telescopic insulating rod, and the testing mechanism comprises: a shell, a first limit bow, a second limit bow, a linkage platform, a transmission component, a linkage component, and a first limit piece; the shell is fixed at the top end of the telescopic insulating rod; the first limit bow is installed on the shell through the transmission component; the transmission component is fixed in the shell; the linkage component is fixed in the shell and connected to the transmission component; the second limit bow is rotatably arranged on the shell; the linkage platform is slidably arranged on the shell; the first limit piece is fixed in the shell; using this method, when performing a current-through test on a lead wire, there is no need to use a climbing device, thereby improving the safety of the experiment; and the testing mechanism realizes quick connection and quick release of the lead wire sleeve, thereby improving the portability of the current-through test detection.

Description

Technical Field

[0001] The invention relates to the field of flow test detection, in particular to a flow test auxiliary tool. Background Art

[0002] In the power system, the acceptance and commissioning of open-type switches is an important link to ensure the normal operation of the power system. However, this link has a high safety risk. In a current-through test of a device, the staff needs to simulate the live operation of the device and pass a large current into the primary side of the CT to check whether the primary connection of the CT in the switch is reliable, whether the extraction ratio is consistent with the set value issued, and whether there is an open circuit in the secondary related protection measurement circuit.

[0003] There are some problems with the traditional flow test method. First, the traditional test method requires workers to work at height, which increases the safety risk of workers. Second, the height work requires ladders, lifting platforms, and needs to be carried and supported. Improper handling or lack of responsibility can easily cause safety risks to workers.

[0004] In view of the above problems, the present invention provides a primary flow test auxiliary tool to solve the above problems. Summary of the invention

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a primary current flow test auxiliary tool, comprising: a telescopic insulating rod, a testing mechanism;

[0006] The testing mechanism is fixed at the top end of the telescopic insulating rod, and the testing mechanism comprises: a housing, a first limiting bow, a second limiting bow, a linkage platform, a transmission component, a linkage component, and a first limiting member;

[0007] The housing is fixed to the top of the telescopic insulating rod; the first limit bow is installed on the housing through the transmission component, and is used to detect and clamp the cable;

[0008] The transmission component is fixed in the housing and is used to adjust and transmit the first limit bow;

[0009] The linkage assembly is fixed in the housing and connected to the transmission assembly, and is used to limit the position of the second limit bow; the second limit bow is rotatably arranged on the housing, and is used to detect and clamp the cable;

[0010] The linkage platform is slidably disposed on the housing, and is used to cooperate with the second limiting bow to clamp and limit the cable when testing the cable;

[0011] The first limiting member is fixed in the housing, and is used to limit the second limiting bow during installation.

[0012] Further, preferably, the transmission component comprises:

[0013] A first slide rail is fixed on the housing and has a slide groove therein; one end of a bottom rod is slidably arranged in the slide groove, and the other end of the bottom rod is fixed to the first limit bow;

[0014] A first spring, disposed between the first slide rail and the bottom rod;

[0015] A second slide rail is fixed in the housing; a first slide platform is slidably arranged in the second slide rail, and the top of the first slide platform is connected to the bottom rod;

[0016] A linkage rod has one end fixed on the second slide rail and the other end connected to the linkage assembly.

[0017] Further, preferably, the linkage assembly comprises: a third slide rail, a first rack set, and a second rack set;

[0018] The third slide rail is fixed on the housing, and a avoidance groove is formed through the third slide rail; a first rack set is rotatably arranged in the avoidance groove; an output end of the first rack set is connected to the first limiter;

[0019] The second rack set is coaxially fixed with the first rack set, and an input end of the second rack set is connected to the linkage rod.

[0020] Further, preferably, the first position-limiting member comprises: a third slide rail and a second slide platform;

[0021] The third slide rail is fixed on the shell; one end of the second slide table is slidably arranged in the third slide rail, and during the installation process, the second slide table limits the second limit bow; the other end of the second slide table is connected to the output end of the first rack group.

[0022] Further, preferably, during the flow test, the linkage platform cooperates with the second limit bow to limit and clamp the cable; when the cable needs to be disassembled after the flow test is completed, the limit state of the cable is released.

[0023] Further, preferably, the second limiting bow comprises: a bottom bow, an adjustment spring, and a top bow;

[0024] The bottom arch is rotatably arranged on the shell;

[0025] The top bow is rotatably arranged on the bottom bow, and an adjusting spring is arranged at the connection between the bottom bow and the top bow.

[0026] Further, preferably, the bottom bow is provided with a torsion spring on the shaft rotatably connected to the shell.

[0027] Compared with the prior art, the present invention provides a flow test auxiliary tool, which has the following beneficial effects:

[0028] 1. The use of an insulated telescopic rod with adjustable length allows testers to avoid climbing during the flow test, thus improving the safety of the test;

[0029] 2. Through the linkage cooperation among the transmission component, linkage component, first limit member and linkage platform in the test mechanism, the first limit bow and the second limit bow can be portable and quickly sleeved on the cable and prevent the equipment from shaking; at the same time, after the test is completed, the first limit bow and the second limit bow can quickly release the sleeved state of the cable, thereby achieving the purpose of quick release, that is, significantly improving the efficiency of the flow test. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is the overall schematic diagram of the auxiliary tool for a flow test;

[0031] Figure 2 A schematic diagram of the test mechanism structure of a flow test auxiliary tool Figure 1 ;

[0032] Figure 3 Schematic diagram of the test mechanism for the auxiliary tool of the primary flow test Figure 2 ;

[0033] Figure 4 A schematic diagram of the top of the transfer assembly for a flow test auxiliary tool;

[0034] Figure 5 This is a schematic diagram of the bottom structure of the primary flow test auxiliary tool transfer assembly;

[0035] Figure 6 This is a schematic diagram of the second limit bow structure of a flow test auxiliary tool;

[0036] Figure 7 This is an enlarged schematic diagram of the local structure of the second limit bow of the primary flow test auxiliary tool;

[0037] Figure 8 This is a schematic diagram of the main installation status of the test mechanism of the auxiliary tool for primary flow test;

[0038] Fig. 9 It is a schematic diagram of the three-dimensional installation status of the test mechanism of the auxiliary tool for primary flow test;

[0039] Fig.10 It is a three-dimensional schematic diagram of the linkage components of the test mechanism of the auxiliary tool for primary flow test;

[0040] Fig.11 It is a three-dimensional schematic diagram of the first limiter of the test mechanism of the auxiliary tool for primary flow test.

[0041] In the figure: 1. telescopic insulating rod; 2. testing mechanism; 21. shell; 22. first limit bow; 23. second limit bow; 231. bottom bow; 232. adjusting spring; 233. top bow; 24. linkage table; 31. first slide rail; 32. bottom rod; 33. first spring; 4. transmission assembly; 41. first slide; 42. second slide rail; 43. linkage rod; 5. linkage assembly; 51. third slide rail; 52. first rack group; 53. second rack group; 6. first limit member; 61. fourth slide rail; 62. second slide. DETAILED DESCRIPTION

[0042] Reference Figures 1 to 11 , the present invention provides a technical solution: a primary current flow test auxiliary tool, comprising: a telescopic insulating rod 1, a testing mechanism 2;

[0043] The testing mechanism 2 is fixed at the top of the telescopic insulating rod 1, and the testing mechanism 2 includes: a housing 21, a first limiting bow 22, a second limiting bow 23, a linkage platform 24, a transmission component 4, a linkage component 5, and a first limiting member 6;

[0044] The housing 21 is fixed to the top of the telescopic insulating rod 1; the first limit bow 22 is installed on the housing 21 through the transmission component 4, and is used to detect and clamp the cable;

[0045] The transmission component 4 is fixed in the housing 21 and is used to adjust and transmit the first limiting bow 22;

[0046] The linkage assembly 5 is fixed in the housing 21 and connected to the transmission assembly 4, and is used to limit the position of the second limit bow 23; the second limit bow 23 is rotatably arranged on the housing 21, and is used to detect and clamp the cable;

[0047] The linkage platform 24 is slidably disposed on the housing 21, and is used to cooperate with the second limiting bow 23 to clamp and limit the cable when detecting the cable;

[0048] The first limiting member 6 is fixed in the housing 21 and is used to limit the second limiting bow 23 during installation.

[0049] It should be noted that before starting the current flow test, the length of the telescopic insulating rod 1 is firstly adjusted reasonably according to the height of the upper cable and the lower cable from the ground.

[0050] like Figure 8As shown, before conducting the flow test, it is necessary to pull the second limit bow 23 to make it under the limitation of the first limit member 6. After completing the above operations, first use the telescopic insulating rod 1 to make the first limit bow 22 sleeved on the cable, and then pull the telescopic insulating rod 1 downward to make the first limit bow 22 slide up relative to the shell 21 under the action of the cable. The sliding of the first limit bow 22 makes the transmission component 4 cooperate with the linkage component 5, so that the first limit member 6 releases the limitation of the second limit bow 23, that is, the second limit bow 23 rotates and sleeves on the cable under the action of elastic force and inertia, and cooperates with the second limit bow 23 to clamp and limit the cable under the action of the linkage platform 24, so as to cooperate with the first limit bow 22 to make the test equipment hang on the cable to prevent shaking, sliding and falling.

[0051] After completing the current flow test, the telescopic insulating rod 1 is pushed upward, so that the linkage platform 24 slides downward relative to the shell 21 under the pressure of the cable, thereby expanding the relative clamping space of the linkage platform 24 and the second limit bow 23 for the cable, and then the cable is first freed from the clamping limit space formed by the second limit bow 23 and the linkage platform 24 through sliding deflection, and finally the cable is separated from the first limit bow 22 through deflection swing, that is, the state of being hung on the cable is finally released.

[0052] In summary, the problem of rapid attachment and removal of cables is solved, and the portability of cable flow test detection is improved.

[0053] As a preferred embodiment, the transmission component 4 includes:

[0054] The first slide rail 31 is fixed on the housing 21 and has a slide groove therein; one end of a bottom rod 32 is slidably arranged in the slide groove, and the other end of the bottom rod 32 is fixed to the first limit bow 22;

[0055] A first spring 33, disposed between the first slide rail 31 and the bottom rod 32;

[0056] A second slide rail 42 is fixed in the housing 21; a first slide platform 41 is slidably arranged in the second slide rail 42, and the top of the first slide platform 41 is connected to the bottom rod 32;

[0057] One end of the linkage rod 43 is fixed on the second slide rail 42 , and the other end is connected to the linkage assembly 5 .

[0058] It should be noted that when the first limit bow 22 slides upward, the first spring 33 is compressed, and at the same time, the first slide table 41 slides upward synchronously in the second slide rail 42, that is, the linkage rod 43 slides. In the process of the linkage rod 43 sliding upward, the linkage assembly 5 releases the limitation of the second limit bow 23 by the first limit member 6.

[0059] In the absence of external force, the first limiting bow 22 will return to its initial state under the action of the first spring 33 .

[0060] As a preferred embodiment, the linkage assembly 5 includes: a third slide rail 51, a first rack set 52, and a second rack set 53;

[0061] The third slide rail 51 is fixed on the housing 21, and a clearance groove is formed in the middle thereof; a first rack set 52 is rotatably arranged in the clearance groove; an output end of the first rack set 52 is connected to the first limit member 6;

[0062] The second rack set 53 is coaxially fixed with the first rack set 52 , and an input end of the first rack set 52 is connected to the linkage rod 43 .

[0063] It needs to be explained that the upward sliding of the linkage rod 43 will drive the first rack group 52 to move, thereby causing the second rack group 53 to move synchronously, i.e., the first limit member 6 moves to release the limitation on the second limit bow 23, causing the second limit bow 23 to rotate and complete the connection of the cable under the action of the linkage platform 24.

[0064] As a preferred embodiment, the first position-limiting member 6 includes: a fourth slide rail 61 and a second slide platform 62;

[0065] The fourth slide rail 61 is fixed on the shell 21; one end of the second slide 62 is slidably set in the fourth slide rail 61, and during the installation process, the second slide 62 limits the second limit bow 23; the other end of the second slide 62 is connected to the output end of the second rack group 53.

[0066] As a preferred embodiment, the linkage platform 24 cooperates with the second limiting bow 23 to limit and clamp the cable during the flow test; when the cable needs to be disassembled after the flow test is completed, the limiting state of the cable is released.

[0067] As a preferred embodiment, the second limiting bow 23 includes: a bottom bow 231, an adjustment spring 232, and a top bow 233;

[0068] The bottom arch 231 is rotatably disposed on the housing 21;

[0069] The top bow 233 is rotatably disposed on the bottom bow 231 , and an adjustment spring 232 is disposed at the connection between the bottom bow 231 and the top bow 233 .

[0070] As a preferred embodiment, the bottom bow 231 is provided with a torsion spring on the axis of rotation connected to the housing 21 .

[0071] It should be noted that before installation, the second limit bow 23 is pulled to rotate, and finally the bottom bow 231 falls onto the second slide 62, so that the second slide 62 overcomes the torsional torque provided by the torsion spring.

[0072] During installation, the second slide 62 slides in the fourth slide rail 61 under the action of the linkage assembly 5, so that the second slide 62 is out of contact with the bottom bow 231, that is, the limitation on the bottom bow 231 is released, so that the bottom bow 231 rotates under the torque of the torsion spring, thereby completing the secondary socket clamping of the cable.

[0073] During the rotation of the bottom bow 231 and the top bow 233 , due to the rotational inertia generated, the bottom bow 231 rotates into the linkage platform 24 , thereby cooperating with the second limit bow to clamp and limit the cable to prevent sliding and shaking.

[0074] The linkage platform 24 is pressed down to expand the clamping space formed by it and the second limiting bow, thereby releasing the clamping and limiting effect on the cable; the setting of the adjustment spring 232 prevents the top bow 233 from interfering during the cable sleeve connection process.

[0075] During specific implementation, the length of the telescopic insulating rod 1 is adjusted according to the height of the cable, so as to cooperate with the testing mechanism 2 so that the first limit bow 22 and the second limit bow 23 can complete the connection and removal of the cable under the action of its transmission component 4, linkage component 5 and first limit member 6, which significantly improves the portability of the flow test detection.

[0076] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flow test auxiliary tool, characterized by: include: Telescopic insulating rod (1), testing mechanism (2); The testing mechanism (2) is fixed to the top end of the telescopic insulating rod (1), and the testing mechanism (2) comprises: a housing (21), a first limiting bow (22), a second limiting bow (23), a linkage table (24), A transmission component (4), a linkage component (5), and a first limit member (6); The housing (21) is fixed to the top end of the telescopic insulating rod (1); the first limit bow (22) is installed on the housing (21) through the transmission component (4) and is used to detect and clamp the cable; The transmission component (4) is fixed in the housing (21) and is used for adjusting and transmitting the first limiting bow (22); The linkage assembly (5) is fixed in the housing (21) and connected to the transmission assembly (4) for limiting the position of the second limit bow (23); the second limit bow (23) is rotatably arranged on the housing (21) for detecting and clamping the cable; The linkage platform (24) is slidably disposed on the housing (21) and is used to cooperate with the second limiting bow (23) to clamp and limit the cable when testing the cable; The first limiting member (6) is fixed in the housing (21) and is used to limit the position of the second limiting bow (23) during installation; The transmission component (4) comprises: A first slide rail (31) is fixed on the housing (21) and has a slide groove therein; one end of a bottom rod (32) is slidably disposed in the slide groove, and the other end of the bottom rod (32) is fixed to the first limiting bow (22); A first spring (33) is arranged between the first slide rail (31) and the bottom rod (32); A second slide rail (42) is fixed in the housing (21); a first slide platform (41) is slidably arranged in the second slide rail (42), and the top of the first slide platform (41) is connected to the bottom rod (32); A linkage rod (43), one end of which is fixed on the second slide rail (42) and the other end of which is connected to the linkage assembly (5); when the first slide platform (41) slides upward in the second slide rail (42), the linkage rod (43) slides synchronously; The linkage assembly (5) comprises: a third slide rail (51), a first rack set (52), and a second rack set (53); The third slide rail (51) is fixed on the housing (21), and a run-off groove is formed in the middle thereof; a first rack set (52) is rotatably arranged in the run-off groove; an output end of the first rack set (52) is connected to the first limit member (6); The second rack set (53) is coaxially fixed with the first rack set (52), and the input end of the first rack set (52) is connected to the linkage rod (43).

2. The primary flow test auxiliary tool according to claim 1, characterized in that: The first position-limiting member (6) comprises: a fourth slide rail (61) and a second slide platform (62); The fourth slide rail (61) is fixed on the housing (21); one end of the second slide table (62) is slidably arranged in the fourth slide rail (61), and during the installation process, the second slide table (62) limits the second limit bow (23); the other end of the second slide table (62) is connected to the output end of the second rack group (53).

3. The primary flow test auxiliary tool according to claim 2, characterized in that: During the flow test, the linkage platform (24) cooperates with the second limit bow (23) to limit and clamp the cable; when the cable needs to be disassembled after the flow test is completed, the limit state of the cable is released.

4. The primary flow test auxiliary tool according to claim 2, characterized in that: The second limiting bow (23) comprises: a bottom bow (231), an adjustment spring (232), and a top bow (233); The bottom arch (231) is rotatably arranged on the housing (21); The top bow (233) is rotatably arranged on the bottom bow (231), and an adjustment spring (232) is arranged at the connection between the bottom bow (231) and the top bow (233).

5. The primary flow test auxiliary tool according to claim 4, characterized in that: The bottom bow (231) is provided with a torsion spring on a shaft rotatably connected to the housing (21).

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