Cable stranded wire tensile strength testing device

Abstract

The utility model relates to the technical field of cable detection, and discloses a cable stranded wire tensile strength testing device which comprises a base, a movable support is arranged above the left side of the base, a fixed support is connected above the right side of the base, and a driving device used for the movable support to move left and right is arranged in the base. The adjacent sides of the fixed support and the movable support are connected with cable clamping plates through supporting rods, grooves are formed in the centers of the adjacent sides of the two cable clamping plates, a plurality of threading holes are annularly distributed around the grooves, the threading holes are connected with the cable clamping plates in a left-right penetrating mode, and through holes are formed in the joints of the threading holes and the grooves. Locking sleeve rods are movably connected to the interiors of the multiple through holes correspondingly, and a transmission device used for enabling the multiple locking sleeve rods to stretch out and draw back is arranged in the groove. According to the utility model, the locking and dismounting operation of the cable stranded wire is convenient, the test efficiency is high, and the problem that the cable stranded wire falls off during the tension test is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of cable detection, in particular to a device for testing the tensile strength of cable strands. Background Art

[0002] A cable is usually a cable similar to a rope formed by stranding several or several groups of wires. The wires in each group are insulated from each other and are often twisted around a center. The whole is wrapped with a highly insulating covering layer. It is mostly erected in the air or installed underground or underwater for telecommunication or power transmission. After the cable is processed, it is necessary to select samples for tensile strength testing.

[0003] The existing document with the publication number CN111896374A discloses a device for testing the continuity of a mine communication tensile cable, including a base. A torsion motor is installed on one side wall of the base. One end of a lead screw is connected to the output end of the torsion motor. A reduction box is installed on the top of the nut slider. A transverse movement motor is installed on the outer wall of the reduction box. The reduction box is connected to a first connecting shaft. A vertical plate is installed on the top of the end of the base far from the torsion motor. A second connecting shaft is inserted into the vertical plate. Cable clamping plates are fixed on the exteriors of the first connecting shaft and the second connecting shaft. A plurality of test heads are arranged on one side wall of the cable clamping plate. A plurality of wire holes are opened on the other side wall of the cable clamping plate. Conductive contacts are arranged on the inner walls of the wire holes. A plurality of locking studs are screwed on the side wall of the cable clamping plate. It can simultaneously and stably and accurately test the tensile and torsional resistance of the cable to determine its service life; the cable clamping plate can clamp cables with different numbers of cores, and the operation method is simple, saving a large amount of manpower and material resources.

[0004] However, this solution still has deficiencies. In actual use, the multiple cores of the cable need to be respectively placed into the wire holes on the cable clamping plate and locked in turn through the locking studs. The locking and disassembly processes are too complicated, resulting in low test efficiency; and there is a risk that the cable cores will slip out during the test after locking.

[0005] Therefore, it is necessary to provide a device for testing the tensile strength of cable strands to solve the above technical problems. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the shortcomings existing in the prior art and propose a device for testing the tensile strength of cable strands.

[0007] To achieve the above object, the utility model adopts the following technical solution: A cable stranding tensile strength testing device, including a base, an activity bracket is arranged above the left side of the base, a fixed bracket is connected above the right side of the base, a driving device for the activity bracket to move left and right is arranged inside the base, cable clamping plates are connected to the adjacent sides of the fixed bracket and the activity bracket through support rods, grooves are formed at the central positions of the adjacent sides of the two cable clamping plates, a plurality of wire passing holes are annularly distributed around the grooves, the plurality of wire passing holes are connected through the cable clamping plates from left to right, through holes are formed at the connection positions of the plurality of wire passing holes and the grooves, locking sleeve rods are movably connected inside the plurality of through holes, and a transmission device for the plurality of locking sleeve rods to expand and contract is arranged inside the grooves.

[0008] Preferably, the transmission device includes a first bevel gear, the bottom of the first bevel gear is rotationally connected to the cable clamping plate through a rotating shaft, a transmission rod is arranged between the first bevel gear and the locking sleeve rod, the number of transmission rods is equal to the number of wire passing holes, and the positions of the transmission rods correspond to the wire passing holes one by one. The transmission rod is rotationally connected to the cable clamping plate through a rod sleeve, the rod sleeve is fixedly connected to the bottom of the groove, a second bevel gear is connected to the side of the transmission rod close to the first bevel gear, and the second bevel gear meshes with the first bevel gear.

[0009] Preferably, external threads are arranged on the outer surfaces of the ends of the plurality of transmission rods close to the locking sleeve rods, internal thread grooves are formed inside the ends of the plurality of locking sleeve rods close to the transmission rods, and the transmission rods are threadedly connected to the adjacent locking sleeve rods.

[0010] Preferably, sliders are connected to the bottoms of the plurality of locking sleeve rods, sliding grooves corresponding to the plurality of sliders are arranged inside the grooves, and the sliding grooves are slidably connected to the corresponding sliders.

[0011] Preferably, the ends of the plurality of locking sleeve rods close to the wire passing holes are conical surfaces, and anti-slip rings are arranged inside the plurality of wire passing holes.

[0012] Preferably, a cross groove is formed above the first bevel gear.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. In the utility model, by rotating the first bevel gear, the first bevel gear drives the transmission rod to rotate through the second bevel gear. The locking sleeve rod is threadedly connected to the transmission rod, thereby realizing the movement of the locking sleeve rod. Thus, the cable stranding is locked by the locking sleeve rod extending into the wire passing hole. When disassembling, only need to rotate the first bevel gear in the reverse direction, the operation is convenient and the efficiency is high.

[0015] 2. In the present utility model, during the telescopic process of multiple locking sleeve rods, multiple sliding grooves inside the groove play a guiding role to ensure the stability of the locking sleeve rod when entering and exiting the wire threading hole.

[0016] 3. In the present utility model, the conical surface structure of the locking sleeve rod ensures that when contacting the cable stranded wire, it presses tighter; the anti-slip ring can increase the internal friction force, thereby effectively preventing the problem of the cable stranded wire slipping out during the tensile test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a cross-sectional view of the internal structure of the cable clamping plate of the present utility model;

[0019] Figure 3 is Figure 2 an enlarged view of the structure at A in

[0020] Figure 4 is a schematic diagram of the structure of the transmission rod of the present utility model;

[0021] Figure 5 is a schematic diagram of the structure of the first bevel gear of the present utility model;

[0022] Figure 6 is a schematic diagram of the structure of the locking sleeve rod of the present utility model.

[0023] In the figure: 1 - base; 2 - fixed bracket; 3 - movable bracket; 4 - cable clamping plate; 41 - wire threading hole; 411 - anti-slip ring; 42 - groove; 5 - first bevel gear; 51 - cross groove; 6 - transmission rod; 61 - external thread; 7 - rod sleeve; 8 - second bevel gear; 9 - locking sleeve rod; 91 - internal thread groove; 92 - slider; 93 - conical surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present utility model and specific embodiments. The description herein is only used to explain the present utility model and does not limit the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts, any modifications, equivalent replacements, improvements, etc., shall be included within the protection scope of the present utility model.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" 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 situations.

[0027] Please refer to Figures 1-6 , the present utility model provides an embodiment: a cable stranding tensile strength testing device, including a base 1. Above the left side of the base 1, there is a movable bracket 3. Above the right side of the base 1, there is a fixed bracket 2 connected. Inside the base 1, there is a driving device for the left and right movement of the movable bracket 3 (the specific structure of the driving device has been disclosed in the comparative document CN111896374A, and the specific content will not be elaborated here). On the adjacent sides of the fixed bracket 2 and the movable bracket 3, there are cable clamping plates 4 connected through support rods. At the central positions of the adjacent sides of the two cable clamping plates 4, there are grooves 42. Around the grooves 42, there are a plurality of wire passing holes 41 distributed in a ring shape. The plurality of wire passing holes 41 are connected through the left and right of the cable clamping plates 4. At the connection positions of the plurality of wire passing holes 41 and the grooves 42, there are through holes. Inside the plurality of through holes, there are locking sleeve rods 9 movably connected. Inside the grooves 42, there is a transmission device for the telescopic movement of the plurality of locking sleeve rods 9.

[0028] Further, the transmission device includes a first bevel gear 5. The bottom of the first bevel gear 5 is rotatably connected to the cable clamping plate 4 through a rotating shaft. There is a transmission rod 6 between the first bevel gear 5 and the locking sleeve rod 9. The number of transmission rods 6 is equal to the number of wire threading holes 41, and the positions of the transmission rods 6 correspond to the wire threading holes 41 one by one. The transmission rod 6 is rotatably connected to the cable clamping plate 4 through a rod sleeve 7. The rod sleeve 7 is fixedly connected to the bottom of the groove 42. A second bevel gear 8 is connected to one side of the transmission rod 6 close to the first bevel gear 5. The second bevel gear 8 meshes with the first bevel gear 5. External threads 61 are provided on the outer surfaces of the ends of the plurality of transmission rods 6 close to the locking sleeve rod 9, and internal thread grooves 91 are provided inside the ends of the plurality of locking sleeve rods 9 close to the transmission rod 6. The transmission rod 6 is threadedly connected to the adjacent locking sleeve rod 9.

[0029] Specifically, by rotating the first bevel gear 5, the first bevel gear 5 drives the transmission rod 6 to rotate through the second bevel gear 8. The locking sleeve rod 9 is threadedly connected to the transmission rod 6, thereby realizing the movement of the locking sleeve rod 9. Thus, the locking sleeve rod 9 extends into the wire threading hole 41 to lock the cable stranded wire. When disassembling, only need to rotate the first bevel gear 5 in the reverse direction, which is convenient to operate and has high efficiency.

[0030] Further, sliders 92 are connected to the bottoms of the plurality of locking sleeve rods 9. Corresponding sliding grooves are provided inside the groove 42 for the plurality of sliders 92. The sliding grooves are slidably connected to the corresponding sliders 92.

[0031] Specifically, during the telescopic process of the plurality of locking sleeve rods 9, the plurality of sliding grooves inside the groove 42 play a guiding role to ensure the stability of the locking sleeve rod 9 entering and exiting the wire threading hole 41.

[0032] Further, the ends of the plurality of locking sleeve rods 9 close to the wire threading hole 41 are conical surfaces 93, and anti-slip rings 411 are provided inside the plurality of wire threading holes 41.

[0033] Specifically, the conical surface 93 structure of the locking sleeve rod 9 ensures that when contacting the cable stranded wire, it presses tighter; the anti-slip ring 411 can increase the internal friction force, thereby effectively preventing the problem of the cable stranded wire slipping out during the tensile test.

[0034] Further, a cross groove 51 is provided above the first bevel gear 5.

[0035] Specifically, the design of the cross groove 51 facilitates the rotation operation of the first bevel gear 5 and improves the usability.

[0036] Working principle of the utility model: When the utility model is in use, each cable of the cable stranding is placed into different wire threading holes 41, and the first bevel gear 5 is rotated. By rotating the first bevel gear 5, the first bevel gear 5 drives the transmission rod 6 to rotate through the second bevel gear 8. The locking sleeve rod 9 is threadedly connected to the transmission rod 6, thereby realizing the movement of the locking sleeve rod 9. Thus, the locking sleeve rod 9 extends into the wire threading hole 41 to lock the cable stranding. After that, the driving device drives the movable bracket 3 to move away from the cable clamp 4 for tensile testing. After the test is completed, rotating the first bevel gear 5 in the reverse direction can quickly disassemble the cable stranding.

[0037] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the utility model.

Claims

1. A tensile strength testing device for cable stranding, comprising a base (1). Above the left side of the base (1), there is a movable bracket (3). Above the right side of the base (1), a fixed bracket (2) is connected. Inside the base (1), there is a driving device for the left - right movement of the movable bracket (3). On the adjacent sides of the fixed bracket (2) and the movable bracket (3), cable clamping plates (4) are connected through support rods, and it is characterized in that: Grooves (42) are provided at the central positions of the adjacent sides of the two cable clamps (4). A plurality of wire threading holes (41) are annularly distributed around the grooves (42). The plurality of wire threading holes (41) are connected through the cable clamp (4) from left to right. Through holes are provided at the joints of the plurality of wire threading holes (41) and the grooves (42). Locking sleeve rods (9) are movably connected inside the plurality of through holes. A transmission device for telescoping the plurality of locking sleeve rods (9) is provided inside the groove (42).

2. The tensile strength testing device for a cable strand according to claim 1, wherein: The transmission device includes a first bevel gear (5). The bottom of the first bevel gear (5) is rotatably connected to the cable clamp (4) through a rotating shaft. A transmission rod (6) is provided between the first bevel gear (5) and the locking sleeve rod (9). The number of transmission rods (6) is equal to the number of wire threading holes (41), and the positions of the transmission rods (6) correspond to the wire threading holes (41) one by one. The transmission rod (6) is rotatably connected to the cable clamp (4) through a rod sleeve (7). The rod sleeve (7) is fixedly connected to the bottom of the groove (42). A second bevel gear (8) is connected to the side of the transmission rod (6) close to the first bevel gear (5). The second bevel gear (8) meshes with the first bevel gear (5).

3. The tensile strength testing device for cable stranding according to claim 2, characterized in that: External threads (61) are provided on the outer surfaces of the ends of the plurality of transmission rods (6) close to the locking sleeve rods (9). Internal thread grooves (91) are provided inside the ends of the plurality of locking sleeve rods (9) close to the transmission rods (6). The transmission rod (6) is threadedly connected to the adjacent locking sleeve rod (9).

4. The tensile strength testing device for a cable strand according to claim 3, wherein: Sliders (92) are connected to the bottoms of the plurality of locking sleeve rods (9). Corresponding chutes are provided inside the groove (42). The chutes are slidably connected to the corresponding sliders (92).

5. The tensile strength testing device for a cable strand according to claim 1, characterized in that: The ends of the plurality of locking sleeve rods (9) close to the wire threading holes (41) are conical surfaces (93). Anti-slip rings (411) are provided inside the plurality of wire threading holes (41).

6. The tensile strength testing device for a cable stranding wire according to claim 2, wherein: A cross groove (51) is provided above the first bevel gear (5).

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