Cable tensile strength testing device

Abstract

The utility model provides a cable tensile strength testing device, and relates to the technical field of deep shale gas horizontal well fracturing. The first clamping and fixing mechanism is used for clamping and fixing a ferrule structure of the tested cable, and the ferrule structure is formed by bending one end of the cable into an arc-shaped closed loop; the rope sleeving column is transversely connected to the base in a sliding mode, and the loop structure can be connected to the rope sleeving column in a sleeving mode; the tension detection mechanism comprises a tension detector, one end of the tension detector is connected with the rope sleeving column, and the other end of the tension detector is connected with the base; the winding mechanism comprises a winding roller and a driving motor which are in transmission connection, the winding roller is installed on the base, and a containing groove is formed in the side wall of the winding roller; and the second clamping mechanism is arranged in the accommodating groove and is used for clamping and fixing the other end of the cable. And through the arrangement of the winding roller, the cable can be pulled, and the device can adapt to cables with different lengths.

Description

Technical Field

[0001] The utility model relates to the technical field of deep shale gas horizontal well fracturing technology, in particular to a cable tensile strength testing device. Background Art

[0002] Deep shale gas horizontal well fracturing technology, especially volume fracturing technology, can effectively improve the recovery rate of shale gas. Deep shale gas horizontal wells have characteristics such as deep operation wells, high friction, high cable pumping pressure, and long time consumption. For cable pumping, a special Φ8.0mm cable is generally selected. To meet actual needs, the inventor has improved the existing cable. One of the improvements is to increase the diameter of the Φ8.0mm cable to Φ9.0mm; it is necessary to test whether the improved Φ9.0mm cable has sufficient tensile strength (whether it can meet higher requirements). For this purpose, the inventor has proposed a cable tensile strength testing device. Summary of the Utility Model

[0003] In view of the above situation, the utility model provides a cable tensile strength testing device, which can test the tensile strength of the cable and can adapt to cables of different lengths during the test.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] The utility model provides a cable tensile strength testing device, including:

[0006] A base;

[0007] A first clamping mechanism for clamping and fixing the ferrule structure of the cable to be tested, and the ferrule structure is formed by bending one end of the cable into an arc-shaped closed loop;

[0008] A sleeve rope post is horizontally slidably connected to the base, and the ferrule structure can be sleeved on the sleeve rope post;

[0009] A tensile force detection mechanism, including a tensile force detector, one end of the tensile force detector is connected to the sleeve rope post, and the other end is connected to the base;

[0010] A winding mechanism, including a winding roller and a driving motor connected in transmission, the winding roller is installed on the base, and a receiving groove is provided on the side wall of the winding roller;

[0011] A second clamping mechanism arranged in the receiving groove for clamping and fixing the other end of the cable.

[0012] In some embodiments of the utility model, a convex edge is provided at the lower part of the sleeve rope post.

[0013] In some embodiments of the utility model, the base includes a receiving groove.

[0014] In some embodiments of the present utility model, the first clamping mechanism is movably arranged, and the first clamping mechanism includes a first clamping block and a second clamping block with adjustable spacing.

[0015] In some embodiments of the present utility model, the inner sides of the first clamping block and the second clamping block are both arc-shaped.

[0016] In some embodiments of the present utility model, a plurality of first screw rods are fixed on the first clamping block, first connection holes are formed on the second clamping block, the first screw rods can penetrate through the first connection holes, and first fastening nuts are connected to the first screw rods.

[0017] In some embodiments of the present utility model, the top of the second clamping mechanism is located in the receiving groove.

[0018] In some embodiments of the present utility model, the second clamping mechanism includes a third clamping block and a fourth clamping block with adjustable spacing; the third clamping block is fixed in the receiving groove.

[0019] The embodiments of the present utility model have at least the following advantages or beneficial effects:

[0020] During the test, after one end of the cable is bent into an arc-shaped closed loop to form a loop structure, the loop structure is sleeved on the lower part of the loop rope post, and then the other end of the cable is fixed on the winding roller through the second clamping mechanism. Then, the driving motor is started, and the driving motor drives the winding roller to rotate to gradually straighten the cable. After the cable is straightened, the driving motor continues to work to pull the cable, and the real-time tension is detected by the tension detector for tensile strength testing. In the above process, through the setting of the winding roller, not only can the cable be pulled, but also cables of different lengths can be adapted.

[0021] Other features and advantages of the present utility model will be described in the subsequent description, and part of them will become obvious from the description or be understood by implementing the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is a schematic structural diagram of a cable tensile strength testing device;

[0024] Figure 2 is Figure 1 a schematic structural diagram along the A direction;

[0025] Figure 3 isFigure 1 Partial enlarged view of position B;

[0026] Figure 4 For Figure 1 Partial enlarged view of position C.

[0027] Icon:

[0028] 11 - Storage groove, 12 - Cross bar, 13 - Longitudinal bar, 14 - Vertical plate, 15 - Support plate, 16 - Slot,

[0029] 2 - First clamping mechanism, 21 - First clamping block, 22 - Second clamping block, 23 - First screw rod, 24 - First fastening nut,

[0030] 3 - Rope sleeve post, 31 - Slide block, 32 - Convex edge,

[0031] 41 - Tensile detector,

[0032] 51 - Reel roller, 511 - Accommodating groove, 52 - Driving motor,

[0033] 6 - Second clamping mechanism, 61 - Third clamping block, 62 - Fourth clamping block, 63 - Second screw rod, 64 - Second fastening nut,

[0034] 7 - Cable, 71 - Sleeve structure. Detailed implementation manners

[0035] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention.

[0036] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of 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, and thus should not be construed as a limitation to the embodiments of the present invention.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0038] In the embodiments of the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0039] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0040] See Figures 1 to 4 , this embodiment provides a device for testing the tensile strength of a cable 7, which includes a base, a first clamping mechanism 2, a rope sleeving column 3, a tensile force detection mechanism, a winding mechanism, and a second clamping mechanism 6.

[0041] The base includes a storage groove 11, a cross bar 12, a longitudinal bar 13, and a vertical plate 14.

[0042] The storage groove 11 is used for placing tools such as wrenches.

[0043] One end of the cross bar 12 is fixed on the outer wall of the storage groove 11; the two cross bars 12 are arranged in parallel.

[0044] Both ends of the longitudinal bar 13 are respectively connected to the two cross bars 12.

[0045] The vertical plate 14 is fixed at one end of the cross bar 12 away from the storage groove 11, and a support plate 15 is fixed on the side of the vertical plate 14 facing the storage groove 11.

[0046] The first clamping mechanism 2 is used for clamping and fixing the ferrule structure 71 of the cable 7 to be measured (Φ9.0mm), and the ferrule structure 71 is formed by bending one end of the cable 7 into an arc-shaped closed loop.

[0047] The rope sleeving column 3 is horizontally slidably connected to the support plate 15, and the ferrule structure 71 can be sleeved on the rope sleeving column 3; specifically, the bottom of the rope sleeving column 3 is connected with a slider 31, and the bottom of the slider 31 is slidably connected with a slide rail, and the slide rail is arranged on the support plate 15.

[0048] The tensile force detection mechanism includes a tensile force detector 41. One end of the tensile force detector 41 is connected to the rope sleeving column 3 or the slider 31, and the other end is connected to the vertical plate 14.

[0049] The winding mechanism is arranged close to the storage groove 11, and the winding mechanism includes a winding roller 51 and a driving motor 52 which are in transmission connection. The winding roller 51 is installed on the outer wall of the storage groove 11 through a support, and a receiving groove 511 is formed on the side wall of the winding roller 51.

[0050] The second clamping mechanism 6 is disposed in the receiving groove 511, and the second clamping mechanism 6 is used to clamp and fix the other end of the cable 7; the top of the second clamping mechanism 6 is located in the receiving groove 511, that is, the second clamping mechanism 6 does not protrude from the side wall of the winding roller 51.

[0051] During the test, after one end of the cable 7 is bent into an arc-shaped closed loop to form a loop structure 71, the loop structure 71 is sleeved on the lower part of the loop rope post 3, and then the other end of the cable 7 is fixed on the winding roller 51 through the second clamping mechanism 6. Then, the driving motor 52 is started, and the driving motor 52 drives the winding roller 51 to rotate to gradually straighten the cable 7. After the cable 7 is straightened, the driving motor 52 continues to work to pull the cable 7, and the real-time tension is detected by the tension detector 41 for tensile strength test. In the above process, through the arrangement of the winding roller 51, not only can the cable 7 be pulled, but also the cables 7 of different lengths can be adapted.

[0052] A plurality of slots 16 are distributed on the base, and the slots 16 are used for inserting the baffle plates. The baffle plates play a protective role to prevent people from being injured when the cable 7 breaks.

[0053] The first clamping mechanism 2 is movably arranged (the first clamping mechanism 2 is not limited), and the first clamping mechanism 2 includes a first clamping block 21 and a second clamping block 22 with adjustable spacing; specifically, a plurality of first screw rods 23 are fixed on the first clamping block 21, first connection holes are formed on the second clamping block 22, the first screw rods 23 can penetrate through the first connection holes, and a first fastening nut 24 is connected to the first screw rods 23. The first fastening nut 24 is used for fastening after adjusting the spacing between the first clamping block 21 and the second clamping block 22.

[0054] Further, in order to improve the reliability of clamping and fixing, the inner sides of the first clamping block 21 and the second clamping block 22 are both arc-shaped. Compared with a flat plate structure, the contact area with the cable 7 is larger and the clamping is firmer.

[0055] Further, a convex edge 32 is provided at the lower part of the loop rope post 3 to prevent the loop structure 71 from accidentally disengaging from the loop rope post 3 upward during the test.

[0056] The second clamping mechanism 6 is arranged with reference to the first clamping mechanism 2. The second clamping mechanism 6 includes a third clamping block 61 and a fourth clamping block 62 with adjustable spacing; different from the first clamping mechanism 2, the third clamping block 61 is fixed in the receiving groove 511. Specifically, a plurality of second screw rods 63 are fixed on the third clamping block 61, second connection holes are formed on the fourth clamping block 62, the second screw rods 63 can penetrate through the second connection holes, and a second fastening nut 64 is connected to the second screw rods 63. The second fastening nut 64 is used for fastening after adjusting the spacing between the third clamping block 61 and the fourth clamping block 62.

[0057] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Without conflict, the embodiments of this application and the features in the embodiments can be arbitrarily combined with each other. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cable tensile strength testing device, characterized in that, Comprising: Base; A first clamping mechanism for clamping and fixing the ferrule structure of the cable to be measured, the ferrule structure being formed by bending one end of the cable into an arc-shaped closed loop; A rope sleeving post, horizontally slidably connected to the base, and the ferrule structure can be sleeved on the rope sleeving post; A tensile force detection mechanism, including a tensile force detector, one end of the tensile force detector is connected to the rope sleeving post, and the other end is connected to the base; A winding mechanism, including a winding roller and a driving motor connected in transmission, the winding roller is installed on the base, and a receiving groove is formed on the side wall of the winding roller; A second clamping mechanism arranged in the receiving groove for clamping and fixing the other end of the cable.

2. The cable tensile strength testing device according to claim 1, characterized in that, A convex edge is arranged at the lower part of the rope sleeving post.

3. The cable tensile strength testing device according to claim 1, wherein, The base includes a storage groove.

4. The cable tensile strength testing device according to claim 1, characterized in that, The first clamping mechanism is movably arranged, and the first clamping mechanism includes a first clamping block and a second clamping block with adjustable spacing.

5. The cable tensile strength testing device according to claim 4, characterized in that, The inner sides of the first clamping block and the second clamping block are both arc-shaped.

6. The cable tensile strength testing device according to claim 4, wherein, A plurality of first screw rods are fixed on the first clamping block, first connection holes are formed on the second clamping block, the first screw rods can penetrate through the first connection holes, and first fastening nuts are connected to the first screw rods.

7. The cable tensile strength testing device according to claim 1, wherein The top of the second clamping mechanism is located in the receiving groove.

8. The cable tensile strength testing device according to any one of claims 1 to 7, characterized in that, The second clamping mechanism includes a third clamping block and a fourth clamping block with adjustable spacing; the third clamping block is fixed in the receiving groove.

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