Cable tension detection device

Abstract

A cable tension detection device belongs to the technical field of cable detection and comprises a machine body, the machine body is provided with a first supporting part and a second supporting part, the first supporting part and the second supporting part are provided with a connecting cylinder, the connecting cylinder is provided with a first clamping groove, and the first clamping groove is connected with a cable through a connecting lock. The connecting lock comprises a lock shell clamped with the first clamping groove, a locking inner core is inserted in the lock shell, the locking inner core is in threaded connection with the lock shell, the locking inner core comprises an elastic conical locking part for locking the cable, the lock shell comprises a first channel for extruding the elastic conical locking part, and the end part of the cable is directly clamped with the first clamping groove through the connecting lock; according to the cable testing device, the cable can be rapidly installed and positioned, the connecting lock can be connected with other cables to be tested in advance in the testing process of the cable, the installation time is effectively saved, the cable is prevented from directly making contact with the first clamping groove, the cable is prevented from being abraded, and the detection accuracy is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of cable testing technology, and in particular to a cable tensile testing device. Background Technology

[0002] Tensile force is an unavoidable external factor during the production, transportation, installation and use of cables. Cable tensile testing can detect quality problems in the cable in a timely manner. Therefore, cable tensile testing is one of the important indicators for measuring cable quality. It is of great significance for ensuring that cables can withstand the expected tensile load in various application scenarios and prevent failures such as breakage and deformation.

[0003] Cable tensile testing requires the use of a tensile testing device. The two clamps of the tensile testing device hold both ends of the cable, and the cable is stretched by changing the distance between the two clamps. In order to improve the testing efficiency, a cable strength testing device has emerged in which one end of the cable is connected to the clamp and the other end of the cable is connected to the slot, so as to improve the fixed installation efficiency of the two ends of the cable.

[0004] However, the aforementioned cable strength testing device still requires the use of clamps to assist in the use of slots. The connection between the clamps and the cable still takes up a lot of installation time, affecting the testing efficiency. In addition, the cable needs to be connected to the slot through a connector. The connector is generally formed by knotting the cable end. This method is only suitable for thinner cable structures. During the test, stress concentration points will form at the knotted part of the cable. At the same time, the knotted part of the cable will wear out in contact with the slot, and the knotted part is more likely to be pulled out first, affecting the accuracy of the test. Utility Model Content

[0005] To address the technical problem in the existing cable strength testing devices mentioned above, where the process of fixing and installing the cable at both ends is cumbersome and affects the testing efficiency, this utility model provides a cable tensile testing device.

[0006] The technical solution of this utility model is as follows:

[0007] This utility model provides a cable tensile testing device, comprising: a body, on which a first support part and a second support part that move relative to each other are provided, and a connecting cylinder is respectively installed on the first support part and the second support part. The connecting cylinder has a first slot, which is engaged with the end of the cable through a connecting lock. The connecting lock includes a lock shell that engages with the first slot, and a locking core is inserted into the lock shell. The locking core is threadedly connected to the lock shell. The locking core contains an elastic conical locking part for locking the cable, and the lock shell contains a first channel for compressing the elastic conical locking part. The connecting lock is engaged with the connecting lock through the first slot. The connecting lock is used to connect with the end of the cable. The end of the cable is directly engaged with the first slot through the connecting lock to achieve rapid installation and positioning of the cable. The connecting lock can be pre-connected to other cables to be tested during the cable testing process, effectively saving installation time and avoiding direct contact between the cable and the first slot, preventing cable wear and ensuring the accuracy of the test.

[0008] Preferably, the first channel is a tapered channel, which, by matching the shape of the elastic tapered locking part, achieves uniform compression of the elastic tapered locking part, thereby ensuring that the elastic tapered locking part effectively compresses and holds the cable.

[0009] Preferably, the lock housing also has a second channel inside, with the first channel and the second channel being coaxially arranged. The second channel is a circular channel, used for cable threading, and also assists in the compression of the elastic conical locking part.

[0010] Preferably, a second groove is provided on the outer wall of the lock housing along its circumference. The width of the second groove is the same as the wall thickness of the connecting cylinder. The connecting lock is engaged with the cylinder wall of the connecting cylinder through the second groove to achieve locking and limiting.

[0011] Preferably, the large end of the elastic conical locking part is fixedly connected to a threaded connection part, which is a bent structure. The bent part of the threaded connection part is provided with an internal thread, and the outer wall of the lock shell is provided with an external thread, so as to achieve a fixed connection between the lock shell and the locking core through the threaded connection.

[0012] Preferably, the interior of the elastic conical locking part and the threaded connection part is provided with a third channel, and the inner wall of the third channel is provided with an anti-slip groove. The third channel is used for the cable to pass through, thereby realizing the compression and clamping of the cable. The anti-slip groove can increase the friction between the cable and the connection, thereby improving the connection firmness between the locking device and the cable.

[0013] Preferably, the first support is fixedly disposed at the lower part of the machine body, and the second support is slidably disposed on the machine body. The second support is located above the first support. The second support is provided with a tension sensor connected to the connecting cylinder. The second support moves to pull the cable, and then the tension sensor detects the tension on the cable.

[0014] Preferably, the connecting cylinder is rotatably mounted on the corresponding first support and second support, and a number of first slots of different sizes are spaced apart along its circumference on the connecting cylinder, which can select the corresponding first slot for different cable specifications, and has strong overall adaptability.

[0015] As can be seen from the above technical solutions, the advantages of this utility model are:

[0016] 1. The connecting lock is used to connect to the end of the cable. The end of the cable is directly engaged with the first slot through the connecting lock to achieve quick installation and positioning of the cable. The connecting lock can be connected to other cables to be tested in advance during the cable testing process, which effectively saves installation time and avoids direct contact between the cable and the first slot, preventing cable wear and ensuring the accuracy of the test.

[0017] 2. A second slot is provided on the outer wall of the lock housing along its circumference. The width of the second slot is the same as the wall thickness of the connecting cylinder. The connecting lock is engaged with the cylinder wall of the connecting cylinder through the second slot to achieve locking and limiting, so as to prevent the connecting lock from being pulled out from the first slot during the tensile test.

[0018] 3. The connecting cylinder is rotatable, and several first slots of different sizes are spaced apart along its circumference, which can select the corresponding first slot for different cable specifications, and has strong overall adaptability. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of the cable tensile testing device according to one or more embodiments of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the lock case according to one or more embodiments of the present invention;

[0022] Figure 3 This is a cross-sectional structural diagram of the lock case according to one or more embodiments of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the locking inner core according to one or more embodiments of the present invention;

[0024] Figure 5This is a cross-sectional structural diagram of the locking inner core according to one or more embodiments of the present invention;

[0025] The components represented by the various reference numerals in the diagram are:

[0026] 1. Body; 2. Base; 3. First support part; 4. Second support part; 5. Connecting cylinder; 6. First slot; 7. First channel; 8. Second channel; 9. Second slot; 10. External thread; 11. Elastic conical locking part; 12. Third channel; 13. Threaded connection part; 14. Internal thread. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0028] In a typical embodiment of this utility model, such as Figure 1 As shown, a cable tensile testing device is proposed, comprising: a body 1, a base 2, a first support part 3, a second support part 4, a tensile sensor, a connecting cylinder 5, and a connecting lock. The body 1 is vertically fixed on the base 2. The first support part 3 is fixedly installed at the lower part of the body 1. The second support part 4 is slidably installed on the body 1 and is located above the first support part 3. A connecting cylinder 5 is installed on the first support part 3 and the second support part 4, respectively. The tensile sensor is fixedly installed inside the second support part 4 and is connected to the connecting cylinder 5 on the second support part 4. The connecting cylinder 5 has a first slot 6 for engaging with the connecting lock. The connecting lock is used to connect with the end of the cable. The end of the cable is directly engaged with the first slot 6 through the connecting lock to achieve rapid installation and positioning of the cable. The connecting lock can be pre-connected to the cable to be tested during the testing of other cables, effectively saving installation time and avoiding direct contact between the cable and the first slot 6, thus ensuring the accuracy of the test.

[0029] It is understandable that the sliding configuration of the second support part 4 is a conventional technical means of the tensile testing machine, such as using a motor to drive the lead screw to drive the vertical movement of the second support part 4. The specific driving method of the second support part 4 can be determined according to the actual design requirements, and no further restrictions are imposed here.

[0030] The locking device includes a lock housing and a locking core. The lock housing is a metal shell structure, such as... Figures 2-3As shown, the interior of the lock housing contains a first channel 7 and a second channel 8 that are connected. The first channel 7 and the second channel 8 are coaxially arranged. The second channel 8 is a circular channel for the cable to pass through. The first channel 7 is a tapered channel with a variable diameter to accommodate and compress the locking core, thereby clamping the cable with the locking core. The minimum diameter of the first channel 7 is the same as the diameter of the second channel 8, which assists in the compression of the elastic tapered locking part 11 and also serves as a limit to prevent the elastic tapered locking part 11 from being pulled out.

[0031] The outer wall of the lock housing away from the second channel 8 is provided with an external thread 10, which is used to connect with the locking inner core by means of a threaded connection, thereby ensuring the firmness of the connection between the lock housing and the locking inner core, and thus ensuring the firmness of the connection with the cable.

[0032] The outer wall of the lock housing is provided with a second groove 9 along its circumference. The connecting lock is engaged with the wall of the connecting cylinder 5 through the second groove 9 to achieve locking and limiting. Specifically, the width of the second groove 9 is the same as the wall thickness of the connecting cylinder 5. When the connecting lock is vertically inserted into the first groove 6, the wall of the connecting cylinder 5 at the corresponding position is engaged in the second groove 9 to achieve the connection between the connecting cylinder 5 and the connecting lock.

[0033] It is understood that in other embodiments, in order to improve the fit between the second slot 9 and the side wall of the connecting cylinder 5, the second slot 9 can be set as an arc-shaped slot that matches the curvature of the connecting cylinder 5 wall. The specific setting method is not limited here and can be determined according to the actual design requirements.

[0034] The cable is connected to the first slot 6 on the connecting cylinder 5 via a connecting lock, which avoids direct contact between the cable and the first slot 6 and effectively prevents friction damage to the cable.

[0035] like Figures 4-5 As shown, the locking inner core includes an elastic conical locking part 11 and a threaded connection part 13. The elastic conical locking part 11 and the threaded connection part 13 are fixedly connected together. The interior of the elastic conical locking part 11 and the interior of the threaded connection part 13 are provided with a third channel 12. The inner wall of the third channel 12 contains anti-slip grooves to improve anti-slip ability. The third channel 12 is used for the cable to pass through. The shape of the elastic conical locking part 11 matches the conical first channel 7. The size of the elastic conical locking part 11 is slightly larger than that of the first channel 7, so that the elastic conical locking part 11 can be squeezed under the action of the first channel 7, and then the cable inside is squeezed by the elastic conical locking part 11 to achieve locking and fixing. The threaded connection part 13 is a bent structure. The threaded connection part 13 is fixedly set at the large end of the elastic conical locking part 11. The bent part of the threaded connection part 13 contains an internal thread 14, so that the lock shell and the locking inner core are fixedly connected by the cooperation of the internal thread 14 and the external thread 10.

[0036] In order to improve the deformation capacity of the elastic conical locking part 11 and ensure the locking effect, several annular grooves can be provided on the surface of the elastic conical locking part 11 along its axial direction. It is understood that the depth, width, number and other aspects of the annular grooves can be determined according to the actual design requirements, and no further restrictions are imposed here.

[0037] To improve adaptability, the connecting cylinder 5 is rotatably mounted on the corresponding first support part 3 and second support part 4 via a rotating shaft, and several first slots 6 of different sizes are spaced apart along its circumference on the connecting cylinder 5, so as to adapt to the testing requirements of cables of different sizes.

[0038] Understandably, the connecting locks are also available in various sizes to accommodate different sizes of the first slot 6. The specific size and specifications are determined based on the actual design requirements, and no further restrictions are imposed here.

[0039] The specific working principle is as follows:

[0040] Select the corresponding size of the connecting lock according to the cable specifications. Remove the lock shell and locking core. Insert one end of the cable to be tested into the lock shell and locking core in sequence. Then, insert the elastic conical locking part 11 of the locking core into the first channel 7 of the lock shell and tighten the locking core. Use the first channel 7 to squeeze the elastic conical locking part 11 to lock the cable. Then, fix the connecting lock to the end of the cable together. After both ends of the cable have been fitted with connecting locks, insert the connecting locks into the corresponding first slots 6 to quickly fix both ends of the cable. The second support part 4 moves vertically to perform a tensile test on the cable. During the tensile test, install connecting locks on both ends of other cables to be tested, which effectively improves the testing efficiency.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cable tensile testing device, comprising: The body (1) is characterized in that the body (1) is provided with a first support part (3) and a second support part (4) that move relative to each other. A connecting cylinder (5) is installed on the first support part (3) and the second support part (4). A first slot (6) is provided on the connecting cylinder (5). The first slot (6) is connected to the cable through a connecting lock. The connecting lock includes a lock shell that engages with the first slot (6). A locking core is inserted inside the lock shell. The locking core is threadedly connected to the lock shell. The locking core contains an elastic conical locking part (11) for locking the cable. The lock shell contains a first channel (7) for squeezing the elastic conical locking part (11).

2. The cable tensile strength testing device according to claim 1, characterized in that, The first channel (7) is a conical channel.

3. The cable tensile strength testing device according to claim 2, characterized in that, The lock case is also provided with a second channel (8), the first channel (7) and the second channel (8) are coaxially arranged, and the second channel (8) is a circular channel.

4. The cable tensile strength testing device according to claim 1, characterized in that, A second slot (9) is provided on the outer wall of the lock shell along its circumference. The width of the second slot (9) is the same as the wall thickness of the connecting cylinder (5).

5. The cable tensile strength testing device according to claim 1, characterized in that, The large end of the elastic conical locking part (11) is fixedly connected to a threaded connection part (13). The threaded connection part (13) is a bent structure. The bent part of the threaded connection part (13) is provided with an internal thread (14), and the outer wall of the lock shell is provided with an external thread (10).

6. The cable tensile strength testing device according to claim 5, characterized in that, The interior of the elastic conical locking part (11) and the threaded connection part (13) is provided with a third channel (12), and the inner wall of the third channel (12) is provided with an anti-slip groove.

7. The cable tensile strength testing device according to claim 1, characterized in that, The first support part (3) is fixedly installed at the lower part of the body (1), and the second support part (4) is slidably installed on the body (1). The second support part (4) is located above the first support part (3), and a tension sensor connected to the connecting cylinder (5) is provided inside the second support part (4).

8. The cable tensile strength testing device according to claim 1, characterized in that, The connecting cylinder (5) is rotatably mounted on the corresponding first support part (3) and second support part (4), and several first slots (6) of different sizes are provided on the connecting cylinder (5) along its circumferential direction.

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