Coating tool for cable insulation resistance test

Abstract

The utility model belongs to the technical field of electrical test equipment, and provides a coating tool for a cable insulation resistance test, which comprises a seat support comprising a horizontal bottom plate, a left side plate and a right side plate; the clamping and fixing assembly comprises a left clamping piece and a right clamping piece; the two ends of the driven screw rod are rotatably arranged on the left side plate and the right side plate respectively, the two ends of the driven screw rod are in meshed connection with the left clamping piece and the right clamping piece respectively, and the driven screw rod is sleeved with a wrapping assembly in threaded connection with the driven screw rod; and the coating assembly is provided with a conductive adhesive tape for winding and coating the cable sample clamped and fixed between the left clamping piece and the right clamping piece. The coating tool for the cable insulation resistance test can fully, comprehensively, tightly and firmly coat a cable sample, a shielding layer and a semi-conductive layer do not need to be manually wound, the test efficiency is improved, errors caused by manual winding are eliminated, and the accuracy of a test result is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electrical test equipment technical field, especially relate to a kind of cable insulation resistance test with cladding tooling. BACKGROUND

[0002] According to the relevant provisions in the standard JB / T 10491-2022 rated voltage 450 / 750V and below cross-linked polyolefin insulated wire and cable chapter 7 finished cable test and requirements, the insulation resistance test needs to be carried out on cable or wire, and the specific test content can be referred to the relevant content in 7.5.For the specific test method of cable or wire insulation resistance test with conductor maximum temperature above 90℃, shielding layer and semiconductive layer need to be coated on the cut cable or core sample.At present, in the actual test operation process, metal braid or metal belt is generally used to coat cable or core sample, however, during the winding process of metal braid or metal belt, for part of cable or core sample with small outer diameter, due to the too small size of outer diameter, manual winding process is time-consuming and laborious, and cannot be better wound and coated;At the same time, during the manual winding process, it is impossible to ensure that the metal braid or metal belt is wound and coated uniformly, so that the metal braid or metal belt cannot be in close contact and shielding with cable or core sample, which affects the accuracy and reliability of experimental results.In addition, according to the test method, the effective measurement of cable or core sample coating is 1.0m, and a long time is needed for manual winding of metal braid or metal belt, which seriously affects the efficiency of test.

[0003] Therefore, it is necessary to design a cable insulation resistance test coating tooling that can effectively solve at least part of the above problems and defects. SUMMARY

[0004] The utility model discloses to solve above technical problem, propose a kind of cable insulation resistance test with cladding tooling, can be fully comprehensive, tightly firm to the cable sample realization coating, without manual winding shielding layer and semiconductive layer, improve the efficiency of test, eliminate the error generated by manual winding, guarantee the accuracy of test result.

[0005] The technical scheme of the utility model is:

[0006] The utility model discloses a kind of cable insulation resistance test with cladding tooling, comprising:

[0007] The seat support includes horizontal bottom plate, and left side plate and right side plate vertically arranged at both ends of horizontal bottom plate;

[0008] The clamping assembly includes a left clamping piece rotatably arranged on the left side plate, and a right clamping piece rotatably arranged on the right side plate;

[0009] A driven screw is rotatably arranged on the left and right side plates and is engaged with the left and right clamping members, and a cladding assembly is threadedly connected to the driven screw;

[0010] The cladding assembly is provided with a conductive adhesive tape to wrap the cable sample clamped between the left and right clamping members.

[0011] Preferably, the cladding assembly further comprises a moving seat movably arranged on the outer periphery of the driven screw, and a bearing seat fixedly arranged above the moving seat.

[0012] The conductive adhesive tape is rotatably arranged on the bearing seat.

[0013] Preferably, the bearing seat is provided with a support shaft movably connected thereto, and the axis of the support shaft and the axis of the driven screw are located in the same plane and have an included angle.

[0014] The conductive adhesive tape is fixedly arranged around the outer periphery of the support shaft.

[0015] Preferably, the upper end surface of the horizontal bottom plate is provided with a limiting groove, and the bottom of the moving seat is provided with a sliding block matched with the limiting groove.

[0016] Preferably, the conductive adhesive tape is a double conductive adhesive tape, or a semi-conductive adhesive tape.

[0017] Preferably, the left clamping member comprises a driving gear rotatably embedded in the left side plate, a left pipe seat coaxially arranged with the driving gear, and a driving handle, the left pipe seat is fixedly arranged on the side of the driving gear facing the right side plate, and the driving handle is fixedly arranged on the side of the driving gear away from the right side plate.

[0018] The right clamping member comprises a driven gear rotatably embedded in the right side plate, and a right pipe seat coaxially arranged with the driven gear, the right pipe seat is fixedly arranged on the side of the driven gear facing the left side plate, and the driven gear is coaxially arranged with the driving gear.

[0019] Preferably, the end portions of the left and right pipe seats are provided with insertion grooves and a compression unit movably penetrating the pipe body and extending into the insertion grooves.

[0020] Preferably, the compression unit comprises a knob, a column, and a pressing plate connected in sequence.

[0021] The column penetrates the pipe body of the left and right pipe seats and is threadedly connected thereto, and the pressing plate is radially movably arranged in the insertion groove.

[0022] Preferably, the horizontal bottom plate is connected to the left side plate and the right side plate in an integral structure.

[0023] The utility model discloses relative to prior art has the following advantages and effects:

[0024] (1) adopt rotatable setting on the left side plate left clamping piece and rotatable setting on the right side plate right clamping piece, through left clamping piece and right clamping piece can be fixed between the cable sample flatness in left side plate and right side plate, and through manual rotation left clamping piece's drive handle realizes the rotation of cable sample, thereby facilitating the conductive adhesive tape comprehensive even winding and covering in the outer periphery of cable sample;

[0025] (2) adopt two ends respectively with left clamping piece and right clamping piece meshing connection driven screw, through rotation left clamping piece can drive driven screw and right clamping piece synchronous rotation, simple structure is convenient to use, need not manual winding and covering cable sample, improves the efficiency of test, guarantees the accuracy of test result;

[0026] (3) adopt setting and covering assembly of conductive adhesive tape, and covering assembly is with driven screw screw connection, to make it can move to left or right under the transmission lease of driven screw, thereby driving conductive adhesive tape comprehensive even winding in the outer periphery of cable sample, simultaneously adopt conductive adhesive tape to replace the existing metal braid and metal band, under the prerequisite of not influencing test test result, reduce the difficulty of winding and covering shield layer and semiconductive layer, make conductive adhesive tape tightly reliable and cover in the outer periphery of cable sample, improve the reliability of test result. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the structure schematic view of cable insulation resistance test with covering tool in the utility model embodiment;

[0028] Figure 2 It is the front view of cable insulation resistance test with covering tool in the utility model embodiment;

[0029] Figure 3 It is another structure schematic view of cable insulation resistance test with covering tool in the utility model embodiment;

[0030] Figure 4 It is Figure 3 The enlarged structure schematic view of position A in the embodiment;

[0031] Reference numerals: 1. Seat bracket; 11. Horizontal base plate; 111. Limiting groove; 12. Left side plate; 13. Right side plate; 2. Left clamping component; 21. Left tube seat; 22. Drive handle; 3. Right clamping component; 31. Right tube seat; 4. Driven screw; 5. Covering assembly; 51. Conductive tape; 52. Moving seat; 521. Slider; 53. Bearing seat; 531. Support shaft; 6. Inserting groove; 7. Clamping unit; 71. Knob; 72. Column; 73. Pressure plate; 8. Cable sample. Detailed Implementation

[0032] To enable those skilled in the art to better understand this utility model, it will now be further described in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this utility model.

[0033] Example:

[0034] like Figures 1-4 As shown, this utility model provides a wrapping fixture for cable insulation resistance testing, which includes a support 1, a clamping component rotatably mounted on the support 1, and a driven screw 4. The driven screw 4 is provided with a wrapping component 5 that can move to the left or right, so that the conductive tape 51 in the wrapping component 5 can be fully and evenly wrapped around the outer periphery of the cable sample 8.

[0035] The cross-section of the support bracket 1 is a "U" shape with an opening at the top. The support bracket 1 includes a horizontal base plate 11 and a left side plate 12 and a right side plate 13 vertically arranged at both ends of the horizontal base plate 11. Furthermore, the horizontal base plate 11 is connected to the left side plate 12 and the right side plate 13 in an integral structure.

[0036] refer to Figure 2 As shown, the clamping assembly includes a left clamping member 2 rotatably mounted on the left side plate 12 and a right clamping member 3 rotatably mounted on the right side plate 13. The left clamping member 2 and the right clamping member 3 are at the same horizontal height to clamp and fix the cable sample 8 in a straight position. Specifically, the left clamping member 2 includes a rotatable drive gear embedded in the left side plate 12, a left tube seat 21 coaxially arranged with the drive gear, and a drive handle 22. The left tube seat 21 is fixedly located on the side of the drive gear facing the right side plate 13, and the drive handle 22 is fixedly located on the side of the drive gear facing away from the right side plate 13. The right clamping member 3 includes a rotatable driven gear embedded in the right side plate 13 and a right tube seat 31 coaxially arranged with the driven gear. The right tube seat 31 is fixedly located on the side of the driven gear facing the left side plate 12. The driven gear is coaxially arranged with the drive gear. It should be noted that neither the drive gear nor the driven gear is shown in the figure, and both are equipped with protective covers to improve safety during use and prevent accidental contact.

[0037] In combination Figure 3 And Figure 4 The end of the left pipe base 21 and the right pipe base 31 is provided with an insertion groove 6, and a pressing unit 7 movably penetrates the pipe base and extends into the insertion groove 6, so as to insert and fix the two ends of the cable sample 8 in the insertion groove 6 of the left pipe base 21 and the right pipe base 31 respectively. The pressing unit 7 comprises a knob 71, a column 72 and a pressing piece 73 connected with each other, the column 72 is screwed through the pipe body of the left pipe base 21 and the right pipe base 31, and the pressing piece 73 is fixedly arranged at the end of the column 72 and is arranged in the insertion groove 6 and can move radially.

[0038] As shown in Figure 1 And Figure 2 The driven screw 4 is rotatably embedded in the left side plate 12 and the right side plate 13 at both ends respectively, and the two ends of the driven screw 4 are meshingly connected with the driving gear and the driven gear through gears respectively, so that the driven gear is synchronously rotated under the driving of the driving gear, so that the cable sample 8 is stably rotated, and the axis of the driven screw 4 is parallel to the axes of the driving gear and the driven gear and located in the same plane.

[0039] The driven screw 4 is sleeved with a covering assembly 5 movably connected therewith, the covering assembly 5 comprises a moving seat 52 movably sleeved on the outer periphery of the driven screw 4, a bearing seat 53 fixedly arranged above the moving seat 52, and a conductive tape 51 rotatably arranged on the bearing seat 53, the moving seat 52 is screw-connected with the driven screw 4, so that the moving seat 52 moves leftward or rightward along with the driven screw 4 during rotation of the driven screw 4, and the horizontal bottom plate 11 is provided with a limiting groove 111, and the bottom of the moving seat 52 is provided with a sliding block 521 matched with the limiting groove 111.

[0040] Optionally, in some embodiments, the bearing seat 53 is detachably connected with the moving seat 52, so as to facilitate replacement of the bearing seat 53 and the conductive tape 51.

[0041] As shown in Figure 2 And Figure 3 The bearing seat 53 is provided with a supporting shaft 531 movably connected therewith and located directly above the driven screw 4, the axis of the supporting shaft 531 is located in the same plane as the axis of the driven screw 4 and has an included angle with the axis of the driven screw 4, so that there is a wrapping angle between the conductive tape 51 and the cable sample 8, thereby realizing overlapping lap winding and wrapping during wrapping of the conductive tape 51, and the conductive tape 51 is fixedly wound on the outer periphery of the supporting shaft 531.

[0042] Further, the conductive tape 51 is a double-conductive tape, or the conductive tape 51 is a semi-conductive tape, specifically, the double-conductive tape 51 can be a double-conductive copper foil tape, and the semi-conductive tape 51 can be a self-adhesive black butyl semi-conductive tape.

[0043] In summary, the cable insulation resistance test is fully covered by the cable sample, and the shielding layer and the semi-conductive layer are not manually wound, the test efficiency is improved, the error caused by manual winding is eliminated, and the accuracy of the test result is guaranteed.

[0044] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent change and modification made within the range of the utility model should still belong to the range covered by the utility model.

Claims

1. A covering fixture for testing cable insulation resistance, characterized in that, The utility model relates to a cable test sample clamping device, including: Seat support (1), seat support (1) includes horizontal bottom plate (11) and vertical setting left side plate (12) and right side plate (13) both ends of horizontal bottom plate (11); Clamping assembly, left clamping piece (2) rotatable setting on left side plate (12) and right clamping piece (3) rotatable setting on right side plate (13) are included; Driven screw rod (4), driven screw rod (4) both ends rotatable setting on left side plate (12) and right side plate (13) respectively, and its both ends are engaged with left clamping piece (2), right clamping piece (3) connection, driven screw rod (4) is set with the cladding assembly (5) with screw connection thereof; Wherein, the cladding assembly (5) is provided with a conductive tape (51) to wrap the cable sample (8) clamped between the left clamping piece (2) and the right clamping piece (3).

2. The cable insulation resistance test covering tool according to claim 1, characterized by: The cladding assembly (5) further comprises a movable seat (52) movably sleeved on the outer periphery of the driven screw rod (4), and a bearing seat (53) fixedly arranged above the movable seat (52); The conductive tape (51) is rotatably arranged on the bearing seat (53).

3. The cable insulation resistance test covering tool according to claim 2, characterized by: The bearing seat (53) is provided with a support shaft (531) movably connected thereto, and the axis of the support shaft (531) and the axis of the driven screw rod (4) are located in the same plane and have an included angle therebetween. The conductive tape (51) is fixedly wound around the outer periphery of the support shaft (531).

4. The cable insulation resistance test covering tool according to claim 2, characterized by: A limiting groove (111) is arranged on the upper end surface of the horizontal bottom plate (11), and the movable seat (52) is provided with a sliding block (521) matched with the limiting groove (111).

5. The cable insulation resistance test covering tool according to claim 1, characterized by: The conductive tape (51) is a double conductive tape, or the conductive tape (51) is a semi-conductive tape.

6. The cable insulation resistance test covering tool according to claim 1, characterized by: The left clamping piece (2) comprises a drive gear rotatably embedded in the left side plate (12), a left pipe seat (21) coaxially arranged with the drive gear, and a drive handle (22), the left pipe seat (21) is fixedly arranged on one side of the drive gear facing the right side plate (13), and the drive handle (22) is fixedly arranged on one side of the drive gear away from the right side plate (13). The right clamping piece (3) comprises a driven gear rotatably embedded in the right side plate (13), a right pipe seat (31) coaxially arranged with the driven gear, the right pipe seat (31) is fixedly arranged on one side of the driven gear facing the left side plate (12), and the driven gear is coaxially arranged with the drive gear.

7. The cable insulation resistance test covering tool according to claim 6, characterized by: The end portions of the left pipe seat (21) and the right pipe seat (31) are provided with insertion grooves (6) and pressure units (7) movably penetrating the pipe body and extending into the insertion grooves (6).

8. The cable insulation resistance test covering tool according to claim 7, characterized by: The pressure unit (7) comprises a knob (71), a columnar rod (72), and a pressing piece (73) connected in sequence; The columnar rod (72) penetrates the pipe body of the left pipe seat (21) and the right pipe seat (31) and is screw-connected therewith, and the pressing piece (73) is radially movably arranged in the insertion groove (6).

9. The cable insulation resistance test covering tool according to claim 1, characterized by: The horizontal bottom plate (11) is connected with the left side plate (12) and the right side plate (13) in an integral structure.

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