Lead screw slide block type dolly switch loop resistance test adapter

Abstract

The utility model relates to the technical field of adapters, and discloses a lead screw slide block type dolly switch loop resistance test adapter, which comprises a guide rail, the cross section of the guide rail is U-shaped, guide rail limiting pieces are welded and fixed at the two ends between the inner walls of the guide rail, and a lead screw is rotatably arranged at the central position between the two guide rail limiting pieces. A notch is formed in the middle of one side of the guide rail, an installation beam is fixedly installed on the outer wall, located on one side of the notch, of the guide rail through bolts, the installation beam is perpendicular to the guide rail and matched with the notch, and a conductive assembly used for being connected with a tulip contact is arranged in the guide rail. The arrangement of the device improves the connection mode of the wire clamp and the dolly switch tulip contact, avoids the spring damage or tulip contact damage caused by the contact between the wire clamp and the spring on the tulip contact in the test process, improves the test reliability, reduces the repeated test frequency, and improves the overall test efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of adapters, and in particular relates to a screw-slider type trolley switch loop resistance test adapter. Background Art

[0002] The circuit resistance test of the trolley switch is an important means for the substation to check whether the trolley switch can operate normally. The circuit resistance test can be used to determine whether there are problems such as poor contact, friction, and oxide layer in the internal circuit of the trolley switch.

[0003] At present, when the loop resistance test of the trolley switch is performed, the wire clamp provided by the instrument is used. The test wire clamp is very easy to contact the spring of the plum blossom contact of the trolley switch. The large current passing through the test process is bound to flow through the spring, which will cause the spring to heat up and form thermal fatigue, resulting in a decrease in the clamping force of the plum blossom contact and an increase in the loop resistance; at the same time, it will cause the plum blossom contact to burn and cause power grid safety accidents during operation; during the test, the contact area between the test wire clamp and the plum blossom contact is small. At the same time, in order to avoid contact between the test wire clamp and the plum blossom spring, the clampable area on the plum blossom contact becomes less, which usually leads to large errors in the test results and requires repeated tests.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A screw-slider type trolley switch loop resistance test adapter, comprising a guide rail, the guide rail cross section is "U"-shaped, guide rail limiters are welded and fixed at both ends of the inner wall of the guide rail, and a screw rod is rotatably installed at the center position between the two guide rail limiters, a notch is provided at the middle position of one side of the guide rail, and a mounting beam is fixedly installed on the outer wall of the guide rail on one side of the notch by bolts, the mounting beam is perpendicular to the guide rail, and the mounting beam matches the notch, and a conductive component for connecting a plum blossom contact is provided in the guide rail;

[0007] The conductive component includes a left conductive slider and a right conductive slider, which are symmetrically slidably installed between the inner walls of the guide rail limiter, and the screw rod passes through the left conductive slider and the right conductive slider and is threadedly connected. A transmission component for screw rod rotation adjustment is also provided in the guide rail and the mounting beam.

[0008] As a preferred embodiment of the utility model, the transmission assembly includes gear one, which is fixedly installed on the outer side of the screw circumference at a position corresponding to the notch, and the threads on both sides of the outer side of the screw circumference are in opposite directions.

[0009] As a preferred embodiment of the present utility model, a gear shaft is arranged between the two sides of the mounting beam near one end of the guide rail, the gear shaft includes gear shaft one and gear shaft two, the gear shaft one and gear shaft two respectively penetrate through the outer walls on both sides of the mounting beam and are inserted into the inner side of the mounting beam, and the gear shaft one and gear shaft two are snap-fitted at one end of the inner side of the mounting beam, the transmission assembly also includes gear two, gear two is fixedly mounted on the outer side of the gear shaft circumference, and gear two is meshed with gear one, and an external hexagonal ratchet connecting piece is arranged at one end of the outer side of the gear shaft two.

[0010] As a preferred embodiment of the utility model, the mounting beam is an assembled structure, the mounting beam is assembled by a bottom plate and two side plates fixed by bolts, the cross-section of the mounting beam is "U"-shaped, and a small round tube is fixedly installed in the middle position between the two side plates of the mounting beam.

[0011] As a preferred embodiment of the present invention, a handle fixing piece is fixedly installed between the inner walls of the mounting beam away from one end of the guide rail, and a handle is fixedly installed at a center position of the handle fixing piece away from one end of the guide rail.

[0012] As a preferred embodiment of the present invention, a wiring terminal is fixedly mounted on one end of the top of the mounting beam away from the guide rail by bolts, and at least two wiring ports are arranged on the wiring terminal.

[0013] As a preferred embodiment of the utility model, the left conductive slider and the right conductive slider are made of copper material, the upper parts of the left conductive slider and the right conductive slider are far away from each other and have an arc-shaped cross-section, and wiring ports are provided on the left conductive slider and the right conductive slider.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The setting of the device improves the connection method between the wire clamp and the plum blossom contact of the trolley switch, avoiding damage to the spring or the plum blossom contact caused by contact between the wire clamp and the spring on the plum blossom contact during the test, improving test reliability, reducing the number of repeated tests, and thus improving overall test efficiency.

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the attached picture:

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the planar structure of the utility model.

[0020] In the figure: 10, guide rail; 11, guide rail limiter; 12, screw rod; 20, mounting beam; 21, handle fixing piece; 22, small round tube; 31, left conductive slider; 32, right conductive slider; 41, gear one; 42, gear two; 43, gear shaft one; 44, gear shaft two; 50, wiring terminal; 60, handle. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0022] A screw-slider type trolley switch loop resistance test adapter, such as Figure 1-2 As shown, it includes a guide rail 10, the cross section of the guide rail 10 is "U"-shaped, guide rail limiters 11 are welded and fixed at both ends of the inner wall of the guide rail 10, and a screw rod 12 is rotatably installed at the center position between the two guide rail limiters 11, a notch is provided at the middle position of one side of the guide rail 10, and a mounting beam 20 is fixedly installed on the outer wall of the guide rail 10 on one side of the notch by bolts, the mounting beam 20 is perpendicular to the guide rail 10, and the mounting beam 20 matches the notch, and a conductive component for connecting a plum blossom contact is provided in the guide rail 10;

[0023] like Figure 1-2 As shown, the conductive component includes a left conductive slider 31 and a right conductive slider 32, and the left conductive slider 31 and the right conductive slider 32 are symmetrically slidably installed between the inner walls of the guide rail limiter 11, and the screw rod 12 passes through the left conductive slider 31 and the right conductive slider 32 and is threadedly connected. A transmission component for rotating and adjusting the screw rod 12 is also provided in the guide rail 10 and the mounting beam 20.

[0024] Specifically, when the device is in use, the two connection ports on the wiring terminal 50 are connected to the connection ports on the left conductive slider 31 and the right conductive slider 32 respectively. When testing, it is only necessary to clamp the test wire clamp of the loop resistance tester on the two connection ports on the wiring terminal 50, and then make the left conductive slider 31 and the right conductive slider 32 contact the two plum blossom contacts respectively to form a loop test.

[0025] like Figure 1-2 As shown, the transmission assembly includes a gear 41, which is fixedly mounted on the outer side of the screw rod 12 at a position corresponding to the notch, and the threads on the outer side of the screw rod 12 on both sides of the gear 41 have opposite directions.

[0026] like Figure 2As shown, a gear shaft is provided between the two sides of the mounting beam 20 near one end of the guide rail 10, and the gear shaft includes a gear shaft 1 43 and a gear shaft 2 44. The gear shaft 1 43 and the gear shaft 2 44 are respectively inserted into the inner side of the mounting beam 20 from the outer walls on both sides of the mounting beam 20, and the gear shaft 1 43 and the gear shaft 2 44 are located at one end of the inner side of the mounting beam 20 and are snap-fitted. The transmission assembly also includes a gear 2 42, which is fixedly installed on the outer side of the gear shaft circumference, and the gear 2 42 is meshed with the gear 1 41, and an outer end of the gear shaft 2 44 is provided with an external hexagonal ratchet connector.

[0027] Specifically, before using the device, use an appropriate ratchet wrench to insert the hexagonal ratchet connector on the gear shaft 2 44 to rotate the gear 2 42, thereby rotating the screw rod 12 through the transmission of the gear 1 41, and adjusting the distance between the left conductive slider 31 and the right conductive slider 32 as needed.

[0028] like Figure 2 As shown, the mounting beam 20 is an assembled structure. The mounting beam 20 is assembled by a bottom plate and two side plates fixed by bolts. The cross-section of the mounting beam 20 is "U"-shaped, and a small round tube 22 is fixedly installed in the middle position between the two side plates of the mounting beam 20.

[0029] Specifically, the mounting beam 20 of the assembled structure does not need to be bent, and only needs to be processed into a few steel plates and fixed and spliced ​​with bolts. The processing difficulty is low and maintenance is convenient.

[0030] like Figure 1-2 As shown, a handle fixing member 21 is fixedly installed between the inner walls of the mounting beam 20 at one end away from the guide rail 10 , and a handle 60 is fixedly installed at the center position of the handle fixing member 21 at one end away from the guide rail 10 .

[0031] like Figure 1-2 As shown, a wiring terminal 50 is fixedly mounted on one end of the top of the mounting beam 20 away from the guide rail 10 by bolts, and at least two wiring ports are provided on the wiring terminal 50.

[0032] Specifically, installing the transition terminal 50 is better than wiring on the conductive slider in terms of the probability of the test line crimping bolts loosening and the degree to which the test line is affected by the movement of the slider.

[0033] like Figure 1-2 As shown, the left conductive slider 31 and the right conductive slider 32 are made of copper material, and the upper parts of the left conductive slider 31 and the right conductive slider 32 are arc-shaped in cross-section on one side away from each other, and the left conductive slider 31 and the right conductive slider 32 are both provided with wiring ports.

[0034] Specifically, the arc-shaped contact surface of the conductive slider is in reliable contact with the plum blossom contact, ensuring two or more contact surfaces.

[0035] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A screw-slider type trolley switch loop resistance test adapter, comprising a guide rail (10), characterized in that: The guide rail (10) has a U-shaped cross section, and guide rail limiters (11) are welded and fixed at both ends of the inner wall of the guide rail (10), and a screw rod (12) is rotatably installed at the center position between the two guide rail limiters (11). A notch is provided at the middle position of one side of the guide rail (10), and a mounting beam (20) is fixedly installed on the outer wall of the guide rail (10) on one side of the notch by bolts, the mounting beam (20) is perpendicular to the guide rail (10), and the mounting beam (20) matches the notch, and a conductive component for connecting a plum blossom contact is provided in the guide rail (10); The conductive component comprises a left conductive slider (31) and a right conductive slider (32), the left conductive slider (31) and the right conductive slider (32) are symmetrically slidably mounted between the inner walls of the guide rail limiter (11), and the screw rod (12) penetrates the left conductive slider (31) and the right conductive slider (32) to be threadedly connected, and a transmission component for rotating and adjusting the screw rod (12) is also arranged in the guide rail (10) and the mounting beam (20).

2. The screw-slider type trolley switch loop resistance test adapter according to claim 1, characterized in that: The transmission assembly comprises a gear 1 (41), which is fixedly mounted on the outer side of the circumference of the screw rod (12) at a position corresponding to the notch, and the threads on the outer side of the circumference of the screw rod (12) located on both sides of the gear 1 (41) have opposite directions.

3. The screw-slider type trolley switch loop resistance test adapter according to claim 2, characterized in that: A gear shaft is arranged between the two sides of the mounting beam (20) at a position close to one end of the guide rail (10), and the gear shaft includes a gear shaft 1 (43) and a gear shaft 2 (44). The gear shaft 1 (43) and the gear shaft 2 (44) respectively penetrate the outer walls of the two sides of the mounting beam (20) and are inserted into the inner side of the mounting beam (20), and the gear shaft 1 (43) and the gear shaft 2 (44) are snap-fitted at one end of the inner side of the mounting beam (20). The transmission assembly also includes a gear shaft 2 (42), which is fixedly mounted on the outer side of the gear shaft, and the gear shaft 2 (42) is meshed with the gear shaft 1 (41). An outer end of the gear shaft 2 (44) is provided with an external hexagonal ratchet connecting piece.

4. The screw-slider type trolley switch loop resistance test adapter according to claim 1, characterized in that: The mounting beam (20) is an assembled structure. The mounting beam (20) is assembled by fixing a bottom plate and two side plates by bolts. The cross section of the mounting beam (20) is U-shaped, and a small round tube (22) is fixedly installed at the middle position between the two side plates of the mounting beam (20).

5. The screw-slider type trolley switch loop resistance test adapter according to claim 1, characterized in that: A handle fixing member (21) is fixedly mounted between the inner walls of the mounting beam (20) at one end away from the guide rail (10), and a handle (60) is fixedly mounted at the center position of the handle fixing member (21) at one end away from the guide rail (10).

6. The screw-slider type trolley switch loop resistance test adapter according to claim 1, characterized in that: A wiring terminal (50) is fixedly mounted on one end of the top of the mounting beam (20) away from the guide rail (10) by means of bolts, and the wiring terminal (50) is provided with at least two wiring ports.

7. The screw-slider type trolley switch loop resistance test adapter according to claim 1, characterized in that: The left conductive slider (31) and the right conductive slider (32) are made of copper material. The upper parts of the left conductive slider (31) and the right conductive slider (32) are separated from each other and have arc-shaped cross-sections. The left conductive slider (31) and the right conductive slider (32) are both provided with wiring ports.

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