Anti-bending test device for insulating sleeve of cable outdoor terminal

Abstract

The invention provides a bending resistance test device for an insulating sleeve of a cable outdoor terminal. The bending resistance test device comprises a connecting seat, a first supporting column, a second supporting column, a fixed pulley and a first connecting rope. The connecting seat is connected with a mounting bracket of the insulating sleeve; the first supporting column rotates on a vertical plane by taking the hinging part as a supporting point; the length of the second pillar extending out of the first pillar is adjustable; the fixed pulley is fixedly connected to the extending end of the second strut; one end of the first connecting rope is connected with the insulating sleeve, the other end of the first connecting rope passes through the fixed pulley and then extends downwards to be connected with the tension mechanism, and the tension mechanism is used for adjusting preset tension applied to the top of the insulating sleeve by the first connecting rope. According to the invention, after the insulating sleeve is installed to the cable outdoor terminal, the bending resistance test of the insulating sleeve can be realized. By adjusting the angle of the first support column and the extension length of the second support column, the device can meet the bending resistance test of insulating sleeves at different installation positions and different installation heights.

Description

Technical Field

[0001] The present application relates to the technical field of cable installation, and more particularly, to a bending resistance test device for an insulating bushing of a cable outdoor terminal. Background Art

[0002] An insulating bushing is an insulating component widely used in the power system. It is assembled with a cable and its cable accessories to form a cable outdoor terminal. The porcelain bushing outdoor terminal is connected to the overhead transmission line through a jumper wire.

[0003] During actual operation, the insulating bushing needs to bear the weight of the jumper wire itself and the weight brought by the swinging of the jumper wire in the air. Therefore, it is required that the insulating bushing must be able to withstand a certain bending resistance.

[0004] However, for multiple insulating bushings already installed on the cable outdoor terminal, there are characteristics such as different installation heights and different installation brackets. The total height of different types of bushings and installation brackets is generally 3m - 10m. Since the position of the insulating bushing cannot be moved after installation, it is difficult to conduct a bending resistance test on the insulating bushing.

[0005] In summary, an improved technical solution is needed to address the above deficiencies in the prior art. Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide a bending resistance test device for an insulating bushing of a cable outdoor terminal, which can realize the bending resistance test on the insulating bushing after the insulating bushing is installed on the cable outdoor terminal.

[0007] The present application specifically provides a bending resistance test device for an insulating bushing of a cable outdoor terminal, including:

[0008] A connecting seat for fixedly connecting with the installation bracket of the insulating bushing;

[0009] A first pillar, one end of the first pillar is hinged to the connecting seat, so that the first pillar rotates on a vertical plane with the hinge part as a fulcrum to adjust and control the angle between the first pillar and the insulating bushing;

[0010] A second pillar, the second pillar includes an insertion end and a protruding end, the second pillar is inserted into the first pillar through the insertion end, and the length of the second pillar protruding from the first pillar is adjustable;

[0011] A fixed pulley fixedly connected to the protruding end of the second pillar;

[0012] A first connecting rope, one end of the first connecting rope is used to connect with the conductor outlet rod of the insulating sleeve, the other end of the first connecting rope extends downward after passing through the fixed pulley, and a tension mechanism is arranged at the end of the other end of the first connecting rope, and the tension mechanism is used to adjust the magnitude of the predetermined tension applied by the first connecting rope to the top of the insulating sleeve.

[0013] In an implementable manner, a hinge portion is arranged on the connecting seat, and one end of the first support pillar is hinged to the connecting seat through the hinge portion.

[0014] In an implementable manner, the hinge portion further includes a first fastener. After the angle adjustment of the first support pillar is completed, the position of the first support pillar is fixed through the first fastener;

[0015] Pin holes are arranged on both the hinge portion and the first support pillar, and the pin holes and the first fastener are both arranged horizontally.

[0016] In an implementable manner, a connecting ring is arranged in the middle of the first support pillar, a second connecting rope is arranged in the connecting ring, and after passing through the connecting ring, the second connecting rope is connected to the middle of the insulating sleeve.

[0017] In an implementable manner, the tension mechanism further includes a tension sensor, and the tension sensor is used to obtain the tension of the first connecting rope on the insulating sleeve.

[0018] In an implementable manner, the tension mechanism is a weight or a wire winding machine.

[0019] In an implementable manner, an opening is arranged on one side of the connecting seat, and the opening is used to connect with the mounting bracket of the insulating sleeve;

[0020] Two fastening bolts are arranged on the top surface of the connecting seat, and the fastening bolts are used to fixedly connect the connecting seat with the mounting bracket.

[0021] In an implementable manner, a rubber layer is arranged on the inner wall of the opening of the connecting seat.

[0022] In an implementable manner, a plurality of first positioning holes are arranged on the column body of the first support pillar, and the first positioning holes are arranged horizontally; a second positioning hole is arranged on the column body of the second support pillar; after the extension length of the second support pillar is adjusted, the second positioning hole and the corresponding first positioning hole are fixedly connected through a second fastener.

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] In the technical solution of the present application, through the setting of the connecting seat, the device is fixedly connected to the mounting bracket of the insulating sleeve to meet the test requirements of different installation positions. Through the setting of the first pillar and the second pillar, the protruding position of the fixed pulley can be adjusted to meet the requirements of different installation heights of the insulating sleeve in the outdoor cable terminal. After adjustment, the fixed pulley is flush with the top of the insulating sleeve.

[0025] Through the setting of the fixed pulley, the vertical force is converted into a horizontal tensile force and applied to the conductor outlet rod of the insulating sleeve to complete the bending resistance test of the insulating sleeve on the outdoor cable terminal.

[0026] By hinging the first pillar to the connecting seat, the included angle between the first pillar and the insulating sleeve in the vertical plane is adjusted, and further the height position of the fixed pulley in the vertical direction is adjusted.

[0027] Therefore, the present application can realize the bending resistance test of the insulating sleeve after the insulating sleeve is installed on the outdoor cable terminal. By adjusting the angle of the first pillar and the protruding length of the second pillar, the device meets the bending resistance test of the insulating sleeve at different installation positions and different installation heights. A predetermined tensile force in the horizontal direction is applied to the insulating sleeve through the first connecting rope and maintained for a predetermined period of time, and it is observed whether there is any cracking in the insulating sleeve to complete the bending resistance test of the insulating sleeve. Description of the Drawings

[0028] Figure 1 is a schematic structural view of the bending resistance test device for the insulating sleeve of the outdoor cable terminal in an embodiment of the present invention.

[0029] Figure 2 is an assembly schematic view of the connecting seat, the first pillar, and the second pillar in the bending resistance test device for the insulating sleeve of the outdoor cable terminal in an embodiment of the present invention.

[0030] Figure 3 is a schematic structural view of the connecting seat in the bending resistance test device for the insulating sleeve of the outdoor cable terminal in an embodiment of the present invention.

[0031] Among them, the description of the reference numerals is as follows:

[0032] 1. Connecting seat; 2. First pillar; 3. Second pillar; 4. Fixed pulley; 5. Insulating sleeve; 51. Conductor outlet rod; 52. Umbrella skirt; 53. Mounting bracket; 6. First connecting rope; 7. Second connecting rope; 8. First fastener; 9. Fastening bolt; 10. Connecting ring. Detailed Embodiments

[0033] The following further details the specific embodiments of the present invention in conjunction with the drawings. These embodiments are only used to illustrate the present invention and are not intended to limit the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0037] See Figures 1 to 3 , the present application provides a bending resistance test device for an insulating sleeve of a cable outdoor terminal, including:

[0038] A connecting seat 1, and the connecting seat 1 is used for fixedly connecting with the mounting bracket 53 of the insulating sleeve 5.

[0039] A first pillar 2, and the first pillar 2 is hinged to the connecting seat 1 through a hinge portion, so that the first pillar 2 rotates on a vertical plane with the hinge portion as a fulcrum to adjust the included angle between the first pillar 2 and the insulating sleeve 5.

[0040] A second pillar 3, the second pillar 3 includes an insertion end and a protruding end, the second pillar 3 is inserted into the first pillar 2 through the insertion end, and the length of the second pillar 3 protruding from the first pillar 2 is adjustable.

[0041] A fixed pulley 4, fixedly connected to the protruding end of the second pillar 3.

[0042] The first connecting rope 6, one end of the first connecting rope 6 is used to connect with the conductor outlet rod 51 of the insulating sleeve 5, the other end of the first connecting rope 6 extends downward after passing through the fixed pulley 4, and a tension mechanism is arranged at the end of the other end of the first connecting rope 6. By adjusting the predetermined tension of the tension mechanism, a predetermined tension is applied to the conductor outlet rod 51 at the top of the rope insulating sleeve 5.

[0043] Through the setting of the connecting seat 1, the device is fixedly connected to the mounting bracket 53 of the insulating sleeve 5 to meet the test requirements of different installation positions. Through the settings of the first support column 2 and the second support column 3, the protruding position of the fixed pulley 4 can be adjusted to meet the requirements of different installation heights of the insulating sleeve 5 in the outdoor cable terminal. After adjustment, the fixed pulley 4 is flush with the top of the insulating sleeve 5.

[0044] Through the setting of the fixed pulley 4, the vertical force is converted into a horizontal tension and applied to the conductor outlet rod 51 of the insulating sleeve 5 to complete the bending resistance test of the insulating sleeve 5 on the outdoor cable terminal.

[0045] By hinging the first support column 2 and the connecting seat 1, the angle between the first support column 2 and the insulating sleeve 5 in the vertical plane is adjusted, and then the height position of the fixed pulley 4 in the vertical direction is adjusted.

[0046] Therefore, this application can realize the bending resistance test of the insulating sleeve 5 after the insulating sleeve 5 is installed on the outdoor cable terminal. By adjusting the angle of the first support column 2 and the protruding length of the second support column 3, the device meets the bending resistance test of the insulating sleeve 5 at different installation positions and different installation heights. A predetermined horizontal tension is applied to the insulating sleeve 5 through the first connecting rope 6 and maintained for a predetermined period of time, and it is observed whether there is any cracking in the insulating sleeve 5 to complete the bending resistance test of the insulating sleeve 5.

[0047] In an implementable manner, as Figure 2 shown, the hinge part and the first support column 2 are fixedly connected through the first fastener 8.

[0048] Specifically, pin holes are provided on both the hinge part and the first support column 2, and the pin holes and the first fastener 8 are all horizontally arranged, so that the first support column 2 swings in the vertical plane to adjust the angle between the first support column 2 and the insulating sleeve 5.

[0049] In an implementable manner, as Figure 1 shown, a connecting ring 10 is arranged in the middle of the first support column 2, a second connecting rope 7 is arranged in the connecting ring 10, and after passing through the connecting ring 10, the second connecting rope 7 is connected to the middle of the insulating sleeve 5.

[0050] It should be noted that the second connecting rope 7 is arranged around the insulating sleeve 5, and under the action of the umbrella skirt 52 of the insulating sleeve 5, the sliding between the second connecting rope 7 and the insulating sleeve 5 is avoided. Through the connecting ring 10 and the second connecting rope 7, the connection between the device and the insulating sleeve 5 can be ensured, and the angle between the insulating sleeve 5 and the first column during the test can be ensured not to change, so as to ensure the completion of the bending resistance test.

[0051] In an implementable manner, the tension mechanism further includes a tension sensor, and the tension sensor is used to obtain the tension of the first connecting rope 6 on the insulating sleeve 5, so as to provide data information for the bending resistance test.

[0052] In an implementable manner, the connecting seat 1 includes a rectangular column of 80mm×80mm×800mm, and an opening is arranged on one side of the connecting seat 1, and the opening is used to connect with the mounting bracket 53 of the insulating sleeve 5.

[0053] It should be noted that as Figure 3 shown, two fastening bolts 9 are arranged on the top surface of the connecting seat 1. After the mounting bracket 53 is inserted into the opening, the connecting seat 1 and the mounting bracket 53 are fixedly connected through the fastening bolts 9. Through the arrangement of the fastening bolts 9, the connection of the mounting brackets 53 with different thicknesses can be satisfied.

[0054] In an implementable manner, a rubber layer is arranged on the inner wall of the opening of the connecting seat 1, and the rubber layer increases the friction between the connecting seat 1 and the mounting bracket 53, so that the connection between the connecting seat 1 and the mounting bracket 53 is more stable.

[0055] In an implementable manner, a plurality of first positioning holes are arranged on the column body of the first pillar 2, and the first positioning holes are arranged horizontally; a second positioning hole is arranged on the column body of the second pillar 3; after the extension length of the second pillar 3 is adjusted, the second positioning hole and the corresponding first positioning hole are fixedly connected through a second fastener. Through the arrangement of the second pillar 3, the test requirements of the insulating sleeve 5 with different installation heights can be met.

[0056] In an implementable manner, the tension mechanism is a weight or a wire winding machine. The tension applied to the top of the insulating sleeve 5 is adjusted by adjusting the number of weights, or the tension is adjusted by a wire winding machine.

[0057] When this application is used, it includes the following steps:

[0058] S1. Fix the connecting seat 1 and the mounting bracket 53 of the insulating sleeve 5.

[0059] S2. With the hinge part as the fulcrum, adjust the angle between the first column and the insulating sleeve 5, and fix the first column with the first fastener 8.

[0060] S3. Set the second connecting rope 7, and fixedly connect the connecting ring 10 with the middle part of the insulating sleeve 5 through the second connecting rope 7. Ensure that during the test, the angle between the insulating sleeve 5 and the first column does not change.

[0061] S4. Adjust the extending length of the second column so that the height of the fixed pulley 4 is flush with the top of the insulating sleeve 5.

[0062] S5. Fix one end of the first connecting rope 6 to the top of the insulating sleeve 5, pass the other end of the first connecting rope 6 through the fixed pulley 4 and extend downward, and fixedly connect it with the tension mechanism.

[0063] S6. Adjust the magnitude of the tension received by the top of the insulating sleeve 5 through the tension mechanism to complete the bending test of the insulating sleeve 5.

[0064] In summary, this application can realize the bending test of the insulating sleeve 5 after the insulating sleeve 5 is installed on the cable outdoor terminal. By adjusting the angle of the first support 2 and the extending length of the second support 3, this device can meet the bending tests of the insulating sleeve 5 at different installation positions and different installation heights. Apply a predetermined horizontal tension to the insulating sleeve 5 through the first connecting rope 6, maintain it for a predetermined period, and observe whether there is any cracking in the insulating sleeve 5 to complete the bending test of the insulating sleeve 5.

[0065] Each component in this device can be independently disassembled and assembled, without being restricted by location and space, and is convenient to move.

[0066] Through the setting of the connecting seat 1, fixedly connect this device with the installation bracket 53 of the insulating sleeve 5 to meet the test requirements of different installation positions. Through the settings of the first support 2 and the second support 3, the extending position of the fixed pulley 4 can be adjusted to meet the requirements of different installation heights of the insulating sleeve 5 in the cable outdoor terminal. After adjustment, make the fixed pulley 4 flush with the top of the insulating sleeve 5.

[0067] Through the setting of the fixed pulley 4, convert the vertical force into a horizontal tension, and can select a suitable position according to the ground conditions to apply the construction tension to the insulating sleeve 5 to complete the bending test of the insulating sleeve 5 on the cable outdoor terminal.

[0068] By hinging the first support 2 with the connecting seat 1, adjust the angle between the first support 2 and the insulating sleeve 5 in the vertical plane, and further adjust the height position of the fixed pulley 4 in the vertical direction.

[0069] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An insulating sleeve bending test device for a cable outdoor terminal, characterized in that, it includes: a connecting seat for fixedly connecting with the mounting bracket of the insulating sleeve; a first pillar, one end of the first pillar is hinged to the connecting seat, so that the first pillar rotates on a vertical plane with the hinge part as the fulcrum to adjust and control the angle between the first pillar and the insulating sleeve; a second pillar, the second pillar includes an insertion end and a protruding end, the second pillar is inserted into the first pillar through the insertion end, and the length of the second pillar protruding from the first pillar is adjustable; a fixed pulley fixedly connected to the protruding end of the second pillar; a first connecting rope, one end of the first connecting rope is used to connect with the conductor outlet rod of the insulating sleeve, the other end of the first connecting rope extends downward after passing through the fixed pulley, and a tension mechanism is arranged at the end of the other end of the first connecting rope, and the tension mechanism is used to adjust the magnitude of the predetermined tension applied by the first connecting rope to the top of the insulating sleeve.

2. The insulating sleeve bending test device for a cable outdoor terminal according to claim 1, characterized in that, a hinge part is arranged on the connecting seat, and one end of the first pillar is hinged to the connecting seat through the hinge part.

3. The insulating sleeve bending test device for a cable outdoor terminal according to claim 2, characterized in that, the hinge part further includes a first fastener, and after the angle adjustment of the first pillar is completed, the position of the first pillar is fixed through the first fastener; pin holes are arranged on both the hinge part and the first pillar, and the pin holes and the first fastener are both arranged horizontally.

4. The insulating sleeve bending test device for a cable outdoor terminal according to claim 1, characterized in that, a connecting ring is arranged in the middle of the first pillar, a second connecting rope is arranged in the connecting ring, and after passing through the connecting ring, the second connecting rope is connected to the middle of the insulating sleeve.

5. The insulating sleeve bending test device for a cable outdoor terminal according to claim 1, characterized in that, the tension mechanism further includes a tension sensor for obtaining the tension of the first connecting rope on the insulating sleeve.

6. The insulating sleeve bending test device for a cable outdoor terminal according to claim 5, characterized in that, the tension mechanism is a weight or a wire winding machine.

7. The insulating sleeve bending test device for a cable outdoor terminal according to claim 1, characterized in that, an opening is arranged on one side of the connecting seat for connecting with the mounting bracket of the insulating sleeve; two fastening bolts are arranged on the top surface of the connecting seat for fixedly connecting the connecting seat with the mounting bracket.

8. The insulating sleeve bending test device for a cable outdoor terminal according to claim 1, characterized in that, a rubber layer is arranged on the inner wall of the opening of the connecting seat.

9. The insulating sleeve bending test device for a cable outdoor terminal according to claim 1, characterized in that, A plurality of first positioning holes are arranged on the column body of the first support column, and the first positioning holes are arranged horizontally; a second positioning hole is arranged on the column body of the second support column; after the extending length of the second support column is adjusted, the second positioning hole and the corresponding first positioning hole are fixedly connected through a second fastener.

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