Insulation skin anti-cracking testing device

Abstract

The utility model belongs to the technical field of detection equipment, and discloses an insulation skin anti-cracking testing device which comprises a box body, a supporting frame and two supports, the box body is provided with a testing cavity, a position adjusting piece is arranged on the box body, the two supports are arranged on the supporting frame in a sliding mode in the first direction, and the two supports are used for supporting the two ends of a testing rod. The two supports are connected with the position adjusting piece, and the position adjusting piece is used for driving the two supports to slide on the supporting frame in the first direction. The anti-cracking testing device for the insulation skin is simple in structure, the distance between the two supports can be adjusted through the position adjusting piece, the two supports are driven to be close to or far away from each other, the distance between the two supports can be adjusted according to the length of a to-be-supported test bar, the use requirements of test bars with different lengths are met, and the anti-cracking testing device for the insulation skin is suitable for popularization and application. And the applicability and the use compatibility are effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to an insulating skin anti-cracking test device. Background Art

[0002] A cable generally consists of a conductor, an insulating skin, a filler, and a sheath. The insulating skin of the cable may crack under the condition of too high external temperature, which will cause damage to the cable and affect the performance and service life of the conductor inside the cable. Therefore, it is necessary to conduct a high-temperature anti-cracking test on the insulating skin of the cable to detect the reliability and stability of the performance of the insulating skin.

[0003] In the prior art, the corresponding test device generally supports a test rod, winds the insulating skin to be detected around the test rod, and then heats the test rod to observe the cracking situation of the insulating skin. However, the existing test device can only support test rods of a fixed length, cannot meet the use requirements of test rods of different lengths, has a single function, and poor applicability. Content of the Utility Model

[0004] The purpose of the utility model is to provide an insulating skin anti-cracking test device, which has a simple structure, can meet the use requirements of test rods of different lengths, and effectively ensures applicability and use compatibility.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An insulating skin anti-cracking test device, comprising:

[0007] A box body having a test cavity, and a temperature adjusting member for adjusting the temperature in the test cavity is provided on the box body;

[0008] A support frame is arranged in the test cavity, and a position adjusting member is provided on the support frame;

[0009] Two supports are arranged on the support frame at intervals along a first direction, and the two supports are used to support the two ends of the test rod, and the two supports are respectively connected to the position adjusting member;

[0010] The position adjusting member is used to drive the two supports to slide along the first direction on the support frame.

[0011] Preferably, the position adjusting member includes a bidirectional screw rod, the bidirectional screw rod is rotatably connected to the support frame, and the axial direction of the bidirectional screw rod extends along the first direction;

[0012] The two supports are respectively threadedly connected to two thread segments with opposite thread directions on the bidirectional screw rod.

[0013] Preferably, the support frame is provided with a guiding long hole along a first direction, the support is provided with a sliding head, and the sliding head is slidably connected to the guiding long hole.

[0014] Preferably, the support frame includes two spaced-apart first frame portions and two spaced-apart second frame portions. The two first frame portions and the two second frame portions together enclose a frame structure. The guiding long hole is formed in one of the first frame portion and the second frame portion, and the bidirectional screw is located inside the frame structure and is rotatably connected to the other of the first frame portion and the second frame portion.

[0015] Preferably, a connecting head is provided on the support, the connecting head is placed inside the frame structure, and the connecting head is provided with a threaded hole threadedly connected to the bidirectional screw.

[0016] Preferably, at least one support groove is respectively formed on each support, and the support grooves on the two supports are arranged opposite to each other in the first direction.

[0017] Preferably, limiting and blocking portions are provided on one sides of the two supports facing away from each other along the first direction, and the limiting and blocking portions are correspondingly arranged with the support grooves to block the ends of the test bars.

[0018] Preferably, the support includes a first seat portion and a second seat portion; wherein,

[0019] The first seat portion is slidably connected to the support frame along the first direction and is threadedly connected to the bidirectional screw;

[0020] The second seat portion extends along a side facing away from the support frame, the support groove is formed at the end of the second seat portion, and the limiting and blocking portion is provided on one side of the support groove.

[0021] Preferably, a scale plate is provided on the support frame and extends along the first direction.

[0022] Preferably, a handle is respectively provided on each support, and the two handles are arranged oppositely.

[0023] Beneficial effects:

[0024] The insulation skin anti-cracking test device provided by the present utility model has two supports slidably connected to the support frame in the first direction. The position adjusting member can drive the two supports to slide along the first direction on the support frame, adjust the distance between the two supports, and then drive the two supports to approach or move away from each other. When the device works, the distance between the two supports is adjusted correspondingly according to the length of the test rod to be supported. Subsequently, the test rod is placed along the first direction, so that both ends of the test rod are supported on the two supports at the same time, and the insulation skin to be tested is wound on the test rod. Next, the support frame and the supports are jointly placed into the test cavity, and the test cavity is heated to the target temperature by the temperature adjusting member and maintained for a specified time. After the time arrives, the test rod and the insulation skin are taken out. When the insulation skin returns to the normal ambient temperature, the operator observes whether cracks appear on the insulation skin. The device has a simple structure, can adjust the distance between the two supports correspondingly to meet the use requirements of test rods of different lengths, and effectively ensures applicability and use compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the insulation skin anti-cracking test device provided by the present utility model;

[0026] Figure 2 is a schematic structural diagram of one perspective of the insulation skin anti-cracking test device provided by the present utility model;

[0027] Figure 3 is a schematic structural diagram of another perspective of the insulation skin anti-cracking test device provided by the present utility model;

[0028] Figure 4 is a schematic structural diagram of yet another perspective of the insulation skin anti-cracking test device provided by the present utility model;

[0029] Figure 5 is at Figure 2 the partial enlarged view of A in;

[0030] Figure 6 is at Figure 4 the partial enlarged view of B in;

[0031] Figure 7 is a schematic structural diagram of the support provided by the present utility model.

[0032] In the figure:

[0033] 1, box body; 11, test cavity; 12, door panel;

[0034] 2, support frame; 201, first frame part; 202, second frame part; 21, bidirectional screw; 211, screwing head; 22, scale plate; 23, guiding long hole;

[0035] 3. Support; 31. First support part; 32. Second support part; 321. Support groove; 322. Limit stop part; 33. Sliding head; 34. Connecting head; 341. Threaded hole; 35. Handle

[0036] 4. Test bar

[0037] 5. Insulating skin Detailed implementation manners

[0038] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only the parts related to the present utility model rather than all the structures are shown in the accompanying drawings.

[0039] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0040] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0041] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplifying the operation, 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, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0042] This embodiment provides an insulating skin anti-cracking test device. Refer to Figures 1 to 7As shown in the figure, the insulating skin anti-cracking test device includes a box body 1, a support frame 2, and two supports 3. Among them, the box body 1 has a test chamber 11, and a temperature adjusting member capable of adjusting the temperature in the test chamber 11 is provided on the box body 1. The support frame 2 is arranged in the test chamber 11, and a position adjusting member is arranged on the support frame 2. The two supports 3 are slidably arranged on the support frame 2 along the first direction, and the two supports 3 are used to support both ends of the test rod 4. The two supports 3 are respectively connected to the position adjusting member. The position adjusting member is used to drive the two supports 3 to slide on the support frame 2 along the first direction.

[0043] In this embodiment, the setting of the position adjusting member can drive the two supports 3 to slide on the support frame 2 along the first direction, adjust the distance between the two supports 3, and further drive the two supports 3 to approach or move away from each other.

[0044] Exemplarily, when the device works, the distance between the two supports 3 is correspondingly adjusted according to the length of the test rod 4 to be supported. Subsequently, the test rod 4 is placed along the first direction, so that both ends of the test rod 4 are supported on the two supports 3 at the same time, and the insulating skin 5 to be tested is wound around the test rod 4. Next, the support frame 2 and the supports 3 are jointly placed into the test chamber 11, and the test chamber 11 is heated to the target temperature by the temperature adjusting member and maintained for a specified time. After the time arrives, the test rod 4 and the insulating skin 5 are taken out. When the insulating skin 5 returns to the normal ambient temperature, the operator observes whether cracks appear on the insulating skin 5.

[0045] In this embodiment, the position adjusting member includes a bidirectional screw 21. The bidirectional screw 21 is rotatably connected to the support frame 2, and the axial direction of the bidirectional screw 21 extends along the first direction. The two supports 3 are respectively threadedly connected to two thread segments with opposite helix directions on the bidirectional screw 21. Specifically, by rotating the bidirectional screw 21, the two supports 3 can be simultaneously driven to approach or move away from each other, and thus the distance between the two supports 3 can be adjusted.

[0046] Exemplarily, when the bidirectional screw 21 is rotated clockwise, the distance between the two supports 3 becomes larger; when the bidirectional screw 21 is rotated counterclockwise, the distance between the two supports 3 becomes smaller.

[0047] In this embodiment, the direction indicated by a in the attached drawing is the first direction. The first direction can be a horizontal direction.

[0048] In some other feasible embodiments, the position adjusting member can be set as a driving cylinder or a linear servo module (not shown). Taking the position adjusting member set as a driving cylinder as an example, there are two driving cylinders, and the two driving cylinders are arranged in one-to-one correspondence with the two supports 3. Specifically, the cylinder body of the driving cylinder is fixed on the support frame 2, the cylinder rod of the driving cylinder extends along the first direction and is connected to the corresponding support 3. The cylinder rod of the driving cylinder expands and contracts relative to the cylinder body, and can drive the corresponding support 3 to slide on the support frame 2 along the first direction.

[0049] In some other feasible embodiments, among the two supports 3, only one support 3 needs to be set to be slidably connected to the support frame 2, and the other support 3 can be set to be fixed. The position adjusting member can be set as a single-threaded end screw, a driving cylinder or a linear servo module. The position adjusting member is connected to the support 3 slidably connected to the support frame 2 and drives this support 3 to slide along the first direction, and can also adjust the distance between the two supports 3.

[0050] Exemplarily, the box body 1 can be selected from the natural ventilation aging test machines in existing equipment.

[0051] Exemplarily, one end of the bidirectional screw 21 passes through the support frame 2 and is arranged. And a screwing head 211 is arranged at the passing end of the bidirectional screw 21. The arrangement of the screwing head 211 facilitates controlling the rotation of the bidirectional screw 21.

[0052] Exemplarily, a through hole (not shown) is provided on the support frame 2, and the bidirectional screw 21 passes through the through hole and is rotatably connected to the through hole. Specifically, a bearing (not shown) is arranged between the bidirectional screw 21 and the through hole. The reliable rotation of the bidirectional screw 21 can be realized through the bearing.

[0053] In this embodiment, at least one support groove 321 is respectively formed on each support 3, and the support grooves 321 on the two supports 3 are arranged opposite to each other in the first direction one by one. Along the first direction, each group of two corresponding support grooves 321 are used to jointly support a test bar 4. The arrangement of the support grooves 321 can support multiple test bars 4 reliably and effectively at the same time.

[0054] In this embodiment, the number of the support grooves 321 spacedly formed on each support 3 is three.

[0055] Exemplarily, the shape of the support groove 321 can be set as a V shape, and can also be set as other shapes such as a U shape, etc., and no more limitations are made here.

[0056] Specifically, limit stop portions 322 are arranged on one sides of the two supports 3 facing away from each other in the first direction. The limit stop portions 322 are arranged corresponding to the support grooves 321 to stop the ends of the test bars 4. Specifically, by arranging the limit stop portions 322, when the support grooves 321 support the test bars 4, the corresponding limit stop portions 322 can axially limit the test bars 4 to prevent the test bars 4 from randomly moving and ensure the reliable and stable support of the test bars 4.

[0057] Exemplarily, the support 3 includes a first seat portion 31 and a second seat portion 32. Among them, the first seat portion 31 is slidably connected to the support frame 2 in the first direction and is threadedly connected to the bidirectional screw 21; the second seat portion 32 extends along the side facing away from the support frame 2, a support groove 321 is opened at the end of the second seat portion 32, and a limit stop portion 322 is provided on one side of the support groove 321. In this embodiment, the first seat portion 31 and the second seat portion 32 can jointly form the support 3 arranged in an L shape. The first seat portion 31 is used to achieve a reliable sliding connection with the support frame 2, and the second seat portion 32 protrudes from the first seat portion 31 and can support the test rod 4 when supporting the test rod 4.

[0058] Exemplarily, the first seat portion 31 and the second seat portion 32 are integrally formed, or can be fixedly connected by welding, or can also be fixedly connected by external connecting pieces such as screws and bolts.

[0059] In this embodiment, the support frame 2 is provided with a scale plate 22 extending in the first direction. By providing the scale plate 22 with scale values thereon, the distance between the two supports 3 can be observed in real time, and the distance between the two supports 3 can be quickly and accurately adjusted according to the length of the test rod 4 to be supported.

[0060] Optionally, the scale plate 22 is adhesively connected to the support frame 2.

[0061] In this embodiment, the support frame 2 is provided with a guiding long hole 23 in the first direction, and the support 3 is provided with a sliding head 33, and the sliding head 33 is slidably connected to the guiding long hole 23. Specifically, the length direction of the guiding long hole 23 is parallel to the first direction, and the sliding head 33 is slidably connected to the guiding long hole 23, which can ensure that the support 3 moves relative to the support frame 2 strictly along the first direction.

[0062] Exemplarily, the support frame 2 includes two spaced-apart first frame portions 201 and two spaced-apart second frame portions 202. The two first frame portions 201 and the two second frame portions 202 jointly enclose a frame structure. The guiding long hole 23 is opened on one of the first frame portion 201 and the second frame portion 202, and the bidirectional screw 21 is located inside the frame structure and is rotatably connected to the other of the first frame portion 201 and the second frame portion 202. In this embodiment, the two first frame portions 201 are spaced apart in the first direction, the two second frame portions 202 are spaced apart in the second direction, and the two first frame portions 201 and the two second frame portions 202 jointly enclose a rectangular frame structure. The guiding long hole 23 is opened on the second frame portion 202, and the bidirectional screw 21 is rotatably connected to the first frame portion 201. With such a setting, the structure is simple, the internal space of the support frame 2 can be further fully utilized, and the installation position of the bidirectional screw 21 is also reasonably arranged, making the overall structure more compact.

[0063] Specifically, a connector 34 is provided on the support 3. The connector 34 is placed inside the frame structure, and the connector 34 is provided with a threaded hole 341 that is threadedly connected to the bidirectional screw 21. Specifically, the internal threads of the two threaded holes 341 of the two supports 3 have opposite helix directions, so as to respectively match the two external thread segments of the bidirectional screw 21 with opposite helix directions.

[0064] Exemplarily, the connector 34 and the support 3 can be integrally formed, or can be fixedly connected by welding, or can also be fixedly connected by external connectors such as screws and bolts.

[0065] Specifically, a sliding head 33 is provided on the connector 34 of each support 3. The sliding head 33 is located inside the frame structure and passes through the guiding long hole 23. With such a setting, the overall structure is designed to be more compact, making full use of the space inside the support frame 2, reasonably arranging the installation position of the sliding head 33, and having a higher space utilization rate.

[0066] In this embodiment, a handle 35 is further provided on the support 3. The provision of the handle 35 enables the convenient handling of the entire support 3 and the support frame 2.

[0067] Exemplarily, a handle 35 is respectively provided on each support 3, and the two handles 35 are arranged oppositely. With such a setting, it is more convenient for the operator to perform the handling operation.

[0068] Exemplarily, the box body 1 is further provided with a door panel 12. The door panel 12 is used to open and close the test chamber 11. Specifically, when heating the test chamber 11, the door panel 12 closes the test chamber 11 to ensure reliable heating of the test chamber 11 by the temperature adjusting member. When it is necessary to take and place the test rod 4, the door panel 12 opens the test chamber 11 again.

[0069] In summary, the insulation skin anti-cracking test device provided in this embodiment has a simple structure, can correspondingly adjust the distance between the two supports 3 to meet the usage requirements of test rods 4 of different lengths, and effectively ensures the applicability and usage compatibility.

[0070] Obviously, the above embodiments of the present utility model are merely examples for clearly explaining the present utility model, and are not limitations on the embodiments of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. An insulation crack resistance testing device, characterized in that: include: A box body (1) having a test cavity (11), wherein the box body (1) is provided with a temperature regulating element capable of regulating the temperature in the test cavity (11); A support frame (2) is arranged in the test cavity (11), and a position adjustment member is provided on the support frame (2); Two supports (3), the two supports (3) are slidably arranged on the support frame (2) along a first direction, the two supports (3) are used to support two ends of the test rod (4), and the two supports (3) are respectively connected to the position adjustment member; The position adjustment member is used to drive the two supports (3) to slide on the support frame (2) along a first direction.

2. The insulation crack resistance testing device according to claim 1, characterized in that: The position adjustment member comprises a bidirectional screw (21), the bidirectional screw (21) is rotatably connected to the support frame (2), and the axial direction of the bidirectional screw (21) extends along a first direction; The two supports (3) are respectively threadedly connected to two thread segments with opposite rotation directions on the bidirectional screw (21).

3. The insulation crack resistance testing device according to claim 2, characterized in that: The support frame (2) is provided with a long guide hole (23) along a first direction, and the support (3) is provided with a sliding head (33), and the sliding head (33) is slidably connected to the long guide hole (23).

4. The insulation crack resistance testing device according to claim 3, characterized in that: The support frame (2) includes two first frame parts (201) and two second frame parts (202) arranged at intervals, the two first frame parts (201) and the two second frame parts (202) together enclose a frame structure, the guide long hole (23) is opened on one of the first frame part (201) and the second frame part (202), the bidirectional screw (21) is located in the frame structure, and the bidirectional screw (21) is rotatably connected to the other of the first frame part (201) and the second frame part (202).

5. The insulation crack resistance testing device according to claim 4, characterized in that: The support (3) is provided with a connecting head (34), the connecting head (34) is placed in the frame structure, and the connecting head (34) is provided with a threaded hole (341) threadedly connected to the bidirectional screw (21).

6. The insulation crack resistance testing device according to claim 2, characterized in that: At least one supporting groove (321) is respectively provided on each of the supports (3), and the supporting grooves (321) on the two supports (3) are arranged opposite to each other in a first direction.

7. The insulation crack resistance testing device according to claim 6, characterized in that: A limit stopper (322) is provided on one side of the two supports (3) facing away from each other along the first direction, and the limit stopper (322) is arranged corresponding to the support groove (321) to stop the end of the test rod (4).

8. The insulation crack resistance testing device according to claim 7, characterized in that: The support (3) comprises a first seat portion (31) and a second seat portion (32); wherein: The first seat portion (31) is slidably connected to the support frame (2) along a first direction, and is threadedly connected to the bidirectional screw (21); The second seat portion (32) is extended along a side facing away from the support frame (2), the support groove (321) is opened at the end of the second seat portion (32), and the limit stop portion (322) is arranged on one side of the support groove (321).

9. The insulation crack resistance testing device according to any one of claims 1 to 8, characterized in that: A scale plate (22) is provided on the support frame (2) extending along a first direction.

10. The insulation crack resistance testing device according to any one of claims 1 to 8, characterized in that: A handle (35) is provided on each support (3), and the two handles (35) are arranged opposite to each other.

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