Mechanical property testing device for cable protection pipe

Abstract

The utility model discloses a mechanical property testing device for a cable protection pipe, which comprises a rack, a first extrusion part and a second extrusion part, the first extrusion part and the second extrusion part are arranged on the rack, the rack is also provided with a power part and a controller for controlling the operation of the power part, and the power part pushes the first extrusion part to be close to the second extrusion part; the first electrode plate and the second electrode plate are respectively and electrically connected with the controller, the first electrode plate and the second electrode plate are both fixed on the cable protection tube and are arranged in a separated manner, and when the cable protection tube is extruded to a test requirement degree, the first electrode plate and the second electrode plate are in contact conduction. The mechanical property test device has the advantage of solving the problem of inaccurate test data caused by subjective observation when a mechanical property test is carried out on the cable protection pipe at present. Unification of test conditions for testing each cable protection tube is ensured, and the mechanical properties of the cable protection tubes are reflected as objectively as possible.

Description

Technical Field

[0001] The utility model relates to the field of mechanical performance tests, in particular to a mechanical performance test device for a cable protection tube. Background Art

[0002] The cable protection tube is a tube made of insulating material. An important mechanical test for the cable protection tube is to test its compressive resistance. For example, the Chinese patent CN206258315U discloses a loose tube pressure test device for optical cables. Although the test tubes are different, the test principles are basically the same. The test method is to put it on a pressure tester and deform the cable protection tube by squeezing it until it is flattened. During the test, the tester relies on the naked eye to observe whether the cable protection tube has been flattened. There are errors in the observation, and it is easy to suspend the test too early or too late, resulting in inaccurate experimental data. Utility Model Content

[0003] The utility model aims to provide a mechanical property test device for a cable protection tube, which can effectively solve the problem of inaccurate test data caused by subjective observation when performing mechanical property tests on existing cable protection tubes.

[0004] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0005] A mechanical property test device for a cable protection tube comprises a frame, a first extrusion member and a second extrusion member arranged on the frame, a power member and a controller for controlling the operation of the power member are also arranged on the frame, and the power member pushes the first extrusion member to move closer to the second extrusion member;

[0006] It also includes a first electrode sheet and a second electrode sheet electrically connected to the controller respectively. The first electrode sheet and the second electrode sheet are both fixed on the cable protection tube and separated. When the cable protection tube is squeezed to the test requirement, the first electrode sheet and the second electrode sheet are in contact and conductive.

[0007] In the above-mentioned cable protection tube mechanical property testing device, the first extrusion member and the second extrusion member are brought close to each other in the vertical direction, and the projections of the first electrode sheet and the second electrode sheet in the horizontal plane at least partially overlap.

[0008] In the above-mentioned cable protection tube mechanical property testing device, the first electrode sheet and the second electrode sheet are both fixed on the inner side wall of the cable protection tube.

[0009] In the above-mentioned cable protection tube mechanical property testing device, both the first electrode sheet and the second electrode sheet are tightly attached to the cable protection tube.

[0010] In the above-mentioned cable protection tube mechanical property testing device, the first electrode sheet and the second electrode sheet are both fixed on the end wall of the cable protection tube.

[0011] In the above-mentioned cable protection tube mechanical properties testing device, the first electrode sheet and the second electrode sheet both include an adhesive portion and a contact portion, the adhesive portion is fixedly connected to the end wall of the cable protection tube, and when the cable protection tube is squeezed to the test requirement, the contact portions of the two electrode sheets are in contact and conductive.

[0012] In the above-mentioned cable protection tube mechanical property testing device, the first electrode sheet and the second electrode sheet are aluminum foil or copper foil.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] By setting the first electrode sheet and the second electrode sheet that are in contact and conductive when the cable protection tube is squeezed to the required degree of the test, the problem of inaccurate test data caused by subjective observation when the cable protection tube is currently tested for mechanical properties is solved. By setting the first electrode sheet and the second electrode sheet on the cable protection tube, the first electrode sheet and the second electrode sheet move closer to each other as the cable protection tube is squeezed. When the cable protection tube is squeezed to the required degree of the test, the first electrode sheet and the second electrode sheet are in contact and conductive, and the controller will receive an electrical signal to control the power part to stop running, thereby ensuring that the test conditions for each cable protection tube are unified and the mechanical properties of the cable protection tube are reflected as objectively as possible.

[0015] Furthermore, the first extrusion member and the second extrusion member are brought together in the vertical direction, and the projections of the first electrode sheet and the second electrode sheet in the horizontal plane at least partially overlap, ensuring that when the cable protection tube is extruded to the test requirement, the first electrode and the second electrode can be accurately contacted and connected.

[0016] Furthermore, the first electrode sheet and the second electrode sheet are both fixed on the inner wall of the cable protection tube. A fixed position of the electrode sheet, when the two electrode sheets are flattened in the cable protection tube, can directly contact each other, which can reduce the difficulty of adjusting the position of the electrode sheets.

[0017] Furthermore, the first electrode sheet and the second electrode sheet are all tightly attached to the cable protection tube, so as to avoid the electrode sheets from being suspended in the air and to prevent the suspended electrode sheets from being in contact in advance during the test, resulting in inaccurate test data.

[0018] Furthermore, the first electrode sheet and the second electrode sheet are both fixed on the end wall of the cable protection tube. Fixing the electrode sheet on the end surface of the cable protection tube will not affect the test of the cable protection tube, and the two electrode sheets can also be in contact and conduction without hindrance when the cable protection tube is flattened.

[0019] Furthermore, the first electrode sheet and the second electrode sheet each include an adhesive portion and a contact portion, wherein the adhesive portion is fixedly connected to the end wall of the cable protection tube, and when the cable protection tube is squeezed to the test requirement, the contact portions of the two electrode sheets are in contact and conductive. The relative position of the electrode sheet on the cable protection tube can be fixed by the adhesive portion, and the position of the electrode sheet in contact and conductive can be adjusted by adjusting the position of the contact portion, thereby avoiding the situation where the cable protection tube has been flattened but the electrode sheet has not yet been in contact and conductive.

[0020] Furthermore, the first electrode sheet and the second electrode sheet are aluminum foil or copper foil. Copper foil and aluminum foil have good electrical conduction effect and are both relatively thin, which minimizes the impact on the degree of flattening of the cable protection tube when the two electrodes are in contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a stereoscopic diagram of a mechanical properties test device for a cable protection tube according to the utility model;

[0022] Figure 2 This is a schematic diagram of the installation of the first electrode sheet and the second electrode sheet on the cable protection tube in the first embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the installation of the first electrode sheet and the second electrode sheet on the cable protection tube in the second embodiment of the utility model.

[0024] The accompanying drawings are marked as follows:

[0025] The cable protection tube 100 , the frame 200 , the first electrode sheet 300 , the second electrode sheet 400 , the first extrusion piece 500 , the second extrusion piece 600 , the bonding portion 700 , and the contact portion 800 . DETAILED DESCRIPTION

[0026] A cable protection tube mechanical property testing device comprises a frame 200, a first extrusion piece 500 and a second extrusion piece 600 arranged on the frame 200, the frame 200 is also provided with a power piece and a controller for controlling the operation of the power piece, the power piece pushes the first extrusion piece 500 to move closer to the second extrusion piece 600; and also comprises a first electrode sheet 300 and a second electrode sheet 400 respectively electrically connected to the controller, the first electrode sheet 300 and the second electrode sheet 400 are both fixed on the cable protection tube 100 and separated, when the cable protection tube 100 is extruded to the test requirement, the first electrode sheet 300 and the second electrode sheet 400 are in contact and conductive.

[0027] By providing the first electrode sheet 300 and the second electrode sheet 400 that are in contact and conductive when the cable protection tube 100 is squeezed to the required degree of the test, the problem of inaccurate test data caused by subjective observation when the cable protection tube 100 is currently tested for mechanical properties is solved. By providing the first electrode sheet 300 and the second electrode sheet 400 on the cable protection tube 100, the first electrode sheet 300 and the second electrode sheet 400 move closer to each other as the cable protection tube 100 is squeezed. When the cable protection tube 100 is squeezed to the required degree of the test, the first electrode sheet 300 and the second electrode sheet 400 are in contact and conductive, and the controller will receive an electrical signal to control the power part to stop running, thereby ensuring that the test conditions for each cable protection tube 100 are unified and the mechanical properties of the cable protection tube 100 are reflected as objectively as possible.

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] See also Figure 1 , Figure 2 This is a first embodiment of a mechanical properties testing device for a cable protection tube of the utility model. The mechanical properties testing device for a cable protection tube includes a frame 200. The frame 200 forms a frame structure. A first extrusion member 500 and a second extrusion member 600 are provided on the frame 200. In this embodiment, the second extrusion member 600 is located above the first extrusion member 500. Such an upper and lower arrangement facilitates placing the cable protection tube 100 on the first extrusion member 500 for mechanical testing. Of course, the first extrusion member 500 and the second extrusion member 600 can also be arranged horizontally.

[0034] A power piece is provided at the bottom of the frame 200, and the power piece pushes the first extrusion piece 500 upward to run with the second extrusion piece 600 to extrude the cable protection tube 100. The second extrusion piece 600 is fixed on the frame 200. Of course, the position of the second extrusion piece 600 on the frame 200 can be adjusted according to the diameter of the cable protection tube 100. A controller is also provided at the bottom of the frame 200, and the controller is used to control the start and stop of the power piece. The power piece can be a device that can provide a linear extrusion force, such as a hydraulic cylinder.

[0035] The test device also includes a first electrode sheet 300 and a second electrode sheet 400 electrically connected to the controller. The first electrode sheet 300 and the second electrode sheet 400 are both fixed on the cable protection tube 100 and separated, that is, when the test is not started, the first electrode sheet 300 and the second electrode sheet 400 are not conductive. Only when the cable protection tube 100 is squeezed and squeezed to the degree required by the test, the first electrode sheet 300 and the second electrode sheet 400 are in contact and conductive, and after conductive, an electrical signal is generated and sent to the controller, and the controller can control the power component to stop running, thereby ensuring that each cable protection tube 100 sample is squeezed to the same degree and reaches a relatively uniform test standard.

[0036] Furthermore, the projections of the first electrode sheet 300 and the second electrode sheet 400 in the horizontal plane at least partially overlap. Since the first extrusion piece 500 and the second extrusion piece 600 are close to each other in the vertical direction to extrude the cable protection tube 100, the projections of the first electrode sheet 300 and the second electrode sheet 400 in the horizontal plane at least partially overlap, and when the cable protection tube 100 is flattened, it can be ensured that the first electrode sheet 300 and the second electrode sheet 400 will definitely be in contact and conduction. Of course, if the first extrusion piece 500 and the second extrusion piece 600 are in a horizontal movement and close to each other, the projections of the first electrode sheet 300 and the second electrode sheet 400 in the vertical plane will at least partially overlap.

[0037] In this embodiment, the first electrode sheet 300 and the second electrode sheet 400 are both fixed on the inner wall of the cable protection tube 100, so that when the cable protection tube 100 is flattened, the first electrode sheet 300 and the second electrode sheet 400 will inevitably contact and conduct, and the area of ​​the first electrode sheet 300 and the second electrode sheet 400 can be made as large as possible, and the distance that the two ends of the first electrode sheet 300 and the second electrode sheet 400 extend horizontally along the inner wall of the cable protection tube 100 can also be as long as possible, to ensure that the first electrode sheet 300 and the second electrode sheet 400 can be accurately conducted when the cable protection tube 100 is flattened.

[0038] Generally, the first electrode sheet 300 and the second electrode sheet 400 are fixed to the cable protection tube 100 by pasting, so that the first electrode sheet 300 and the second electrode sheet 400 can be fixed as much as possible, reducing the difficulty of installing the test equipment and speeding up the test efficiency. The first electrode sheet 300 and the second electrode sheet 400 can be made of copper foil or aluminum foil, so that the thickness of the first electrode sheet 300 and the second electrode sheet 400 can be reduced as much as possible, making the test data more accurate and reducing the influence of the thickness of the electrode sheet on the test data.

[0039] During the test, the first extrusion piece 500 and the second extrusion piece 600 are fixed on the cable protection tube 100, and then the cable protection tube 100 is placed on the first extrusion piece 500, and a start signal is sent to the controller, and the controller controls the power piece to start running, pushing the first extrusion piece 500 to run in the direction of the second extrusion piece 600. When the cable protection tube 100 is flattened to the degree required by the test, the first electrode sheet 300 and the second electrode sheet 400 are in contact and conductive, and a stop signal is sent to the controller, and the controller controls the power piece to stop running, and reads the force applied by the power piece to compress the cable protection tube 100 at this time, so as to obtain the mechanical performance data of the cable protection tube 100. Since the first electrode sheet 300 and the second electrode sheet 400 will automatically conduct each time the cable protection tube 100 is squeezed to the degree required by the test, it is ensured that the test standard is consistent each time, and the tester does not need to observe the squeezing degree of the cable protection tube 100 with the naked eye to control the power piece to close, thereby ensuring the accuracy of the test data.

[0040] Embodiment 2:

[0041] like Figure 3 As shown, the difference from the first embodiment is that the installation positions of the first electrode sheet 300 and the second electrode sheet 400 in this embodiment are different. In this embodiment, the first electrode sheet 300 and the second electrode sheet 400 are both installed on the end wall of the cable protection tube 100, that is, installed on the side wall of the end face of the cable protection tube 100. In this way, when the cable protection tube 100 is squeezed to the test requirement, the first electrode sheet 300 and the second electrode sheet 400 can also be in contact and conductive.

[0042] Furthermore, in order to improve the accuracy of conduction between the first electrode sheet 300 and the second electrolyte sheet, the first electrode sheet 300 and the second electrode sheet 400 both include an adhesive portion 700 and a contact portion 800. The adhesive portion 700 is fixedly connected to the end wall of the cable protection tube 100, and the contact portion 800 extends a certain distance toward the center of the cable protection tube 100. When the cable protection tube 100 is squeezed to the required degree of the test, the contact portions 800 of the two electrode sheets are in contact and conductive.

[0043] The mechanical testing method of the cable protection tube 100 of this embodiment is consistent with that of the first embodiment. For other contents not described in this embodiment, reference may be made to the first embodiment.

[0044] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A mechanical property test device for a cable protection tube, comprising a frame, a first extrusion member and a second extrusion member arranged on the frame, wherein a power member and a controller for controlling the operation of the power member are also arranged on the frame, and the power member pushes the first extrusion member to move closer to the second extrusion member; It is characterized in that It also includes a first electrode sheet and a second electrode sheet electrically connected to the controller respectively. The first electrode sheet and the second electrode sheet are both fixed on the cable protection tube and separated. When the cable protection tube is squeezed to the test requirement, the first electrode sheet and the second electrode sheet are in contact and conductive.

2. A cable protection tube mechanical properties testing device as claimed in claim 1, characterized in that: The first extrusion member and the second extrusion member are brought closer together in a vertical direction, and projections of the first electrode sheet and the second electrode sheet in a horizontal plane at least partially overlap.

3. A cable protection tube mechanical properties testing device as claimed in claim 1, characterized in that: The first electrode sheet and the second electrode sheet are both fixed on the inner side wall of the cable protection tube.

4. A cable protection tube mechanical properties testing device as claimed in claim 3, characterized in that: The first electrode sheet and the second electrode sheet are all tightly attached to the cable protection tube.

5. A cable protection tube mechanical properties testing device as claimed in claim 1, characterized in that: The first electrode sheet and the second electrode sheet are both fixed on the end wall of the cable protection tube.

6. A cable protection tube mechanical properties testing device as claimed in claim 5, characterized in that: The first electrode sheet and the second electrode sheet each include an adhesive portion and a contact portion, wherein the adhesive portion is fixedly connected to the end wall of the cable protection tube, and when the cable protection tube is squeezed to the required degree for the test, the contact portions of the two electrode sheets are in contact and conductive.

7. A cable protection tube mechanical properties testing device as claimed in claim 1, characterized in that: The first electrode sheet and the second electrode sheet are aluminum foil or copper foil.

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