Device for testing tensile strength of electric wire rod

Abstract

The utility model relates to the technical field of electric wire rod testing equipment, in particular to an electric wire rod tensile strength testing device which comprises a machine frame. A clamping mechanism is arranged on the machine frame and comprises moving seats, the moving seats are symmetrically arranged on the two sides of the top end of the machine frame, supporting cylinders are connected to the moving seats, clamping blocks are rotatably connected to the inner sides of the supporting cylinders, supporting shafts are fixedly connected to the clamping blocks, transmission gears are fixedly connected to the tail ends of the supporting shafts, and the transmission gears are fixedly connected to the tail ends of the supporting shafts. And the outer side of the transmission gear is in meshed connection with a gear ring. The two ends of a wire rod can be clamped and fixed through rotation of the clamping blocks by arranging the annularly arranged clamping block structures, and meanwhile, the clamping blocks clamp the wire rod through a plurality of clamping sites, so that deformation of the wire rod caused by excessive clamping is avoided, and influence on a tensile test result due to deformation of the wire rod is avoided. And an annular clamping structure is arranged, so that the circular aperture of the inner side of a clamping block can be gradually reduced for clamping during clamping, and the wire rod is convenient to place.

Description

Technical Field

[0001] This utility model relates to the technical field of wire and cable testing equipment, specifically a device for testing the tensile strength of wires and cables. Background Technology

[0002] Electrical wires are products used to transmit electrical energy, information, and convert electrical energy. During production, the tensile strength of electrical wires must be tested before they can be used in practice. This tensile strength test requires clamping structures to secure both ends of the wire to prevent it from loosening and affecting the test results. However, most existing clamping structures are quite simple, typically consisting of two symmetrically arranged clamping blocks with V-grooves. To prevent the wire from loosening or slipping, the clamping blocks often apply significant force, which can easily cause deformation of the wire during clamping, thus affecting the test results due to changes in strength at the deformed areas. Furthermore, aligning both ends of the wire with the clamping blocks during installation is inconvenient due to the small size of the V-grooves between the blocks.

[0003] In view of this, we propose a device for testing the tensile strength of electrical wires. Utility Model Content

[0004] The purpose of this utility model is to provide a device for testing the tensile strength of electrical wires, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for testing the tensile strength of electrical wires includes a frame;

[0007] The frame is equipped with a clamping mechanism, which includes a movable seat. The movable seats are symmetrically arranged on both sides of the top of the frame. A support cylinder is connected to the movable seat. A clamping block is rotatably connected to the inner side of the support cylinder. A support shaft is fixedly connected to the clamping block. A transmission gear is fixedly connected to the end of the support shaft. A gear ring is meshed with the outer side of the transmission gear.

[0008] Preferably, a sleeve is fixedly connected to the toothed ring, the sleeve is sleeved on the outside of the support cylinder, a limit ring is slidably connected to the outside of the support cylinder, and a buffer spring is fixedly connected to the end of the limit ring.

[0009] Preferably, a locking block is rotatably connected to one side of the limiting ring, a torsion spring is fixedly connected to the side of the locking block, and a slot corresponding to the locking block structure is opened on the side of the sleeve.

[0010] Preferably, the top of the movable seat is provided with a sliding groove, a slider is fixedly connected to the outside of the support cylinder, the slider is slidably connected inside the sliding groove, and a pressure sensor is fixedly connected inside the sliding groove.

[0011] Preferably, the clamping mechanism is provided with a driving mechanism on its side. The driving mechanism includes a movable frame, which is slidably connected to the top of the frame. A driving rod is rotatably connected to the movable frame, and driving gears that mesh with the gear ring are fixedly connected to both ends of the driving rod.

[0012] Preferably, the drive rod is a bidirectional threaded rod structure, the side of the movable seat is provided with a thread that meshes with the drive rod, and the end of the drive rod is connected to a motor.

[0013] Preferably, the top of the movable frame is engaged with a fastening bolt.

[0014] By employing the above technical solution, this utility model provides a device for testing the tensile strength of electrical wires, which has at least the following beneficial effects:

[0015] (1) The present invention uses a ring-shaped clamping block structure to clamp and fix both ends of the wire by rotating the clamping block, thereby preventing the wire from coming loose. At the same time, since the clamping block clamps the wire through multiple clamping points, it avoids excessive clamping that could cause deformation of the wire and prevents the deformation of the wire from affecting the tensile test results.

[0016] (2) The circular clamping structure of this utility model can gradually reduce the diameter of the circular hole on the inner side of the clamping block during clamping. Therefore, the clamping structure forms a large space in the initial state, which facilitates the operator to place the wire at both ends and improves the efficiency of the wire tensile test. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0020] Figure 3 This is an enlarged schematic diagram of point A in this utility model;

[0021] Figure 4 This is a schematic diagram of the movable seat structure of this utility model;

[0022] Figure 5 This is an enlarged schematic diagram of section B of this utility model;

[0023] Figure 6 This is a schematic diagram of the internal structure of this utility model.

[0024] In the diagram: 1. Frame; 2. Clamping mechanism; 201. Moving seat; 202. Support cylinder; 203. Clamping block; 204. Support shaft; 205. Transmission gear; 206. Gear ring; 207. Sleeve; 208. Limiting ring; 209. Buffer spring; 210. Locking block; 212. Locking groove; 3. Slide groove; 4. Slider; 5. Pressure sensor; 6. Drive mechanism; 601. Moving frame; 602. Drive rod; 603. Drive gear; 604. Thread; 605. Motor; 606. Fastening bolt. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] A device for testing the tensile strength of electrical wires, such as Figures 1-6 As shown, it includes a frame 1; the frame 1 is equipped with a clamping mechanism 2, which can clamp and fix the wires, thereby improving the stability of the wires during the testing process.

[0028] Specifically, the clamping mechanism 2 includes a movable base 201, which is symmetrically arranged on both sides of the top of the frame 1. The movable bases 201 at both ends can drive the two ends of the wire respectively, so that the two ends of the wire move in opposite directions to perform tensile strength testing. A support cylinder 202 is connected to the movable base 201. A clamping block 203 is rotatably connected to the inner side of the support cylinder 202. The structure of the support cylinder 202 can support the clamping block 203. At the same time, there are multiple sets of clamping blocks 203, which are arranged around the support cylinder 202. The inner side of the clamping block 203 is an arc-shaped structure. The surrounding clamping blocks 203 form a structure similar to a shutter. The annular clamping structure can increase the contact area between the clamping structure and the wire, thereby improving the clamping effect. At the same time, the annular clamping structure can apply force evenly to the outer wall of the wire, thereby avoiding the wire from being squeezed and deformed due to excessive clamping force. A support shaft 204 is fixedly connected to the clamping block 203. The support shaft 204 supports the clamping block 203, allowing it to rotate and be adjusted around the support shaft 204. A transmission gear 205 is fixedly connected to the end of the support shaft 204. A gear ring 206 is meshed with the outer side of the transmission gear 205. The gear ring 206 can cooperate with the transmission gear 205, and the rotation of the gear ring 206 can simultaneously drive the clamping block 203 to rotate synchronously, thereby achieving adjustment of the clamping structure.

[0029] In addition, a sleeve 207 is fixedly connected to the toothed ring 206. The sleeve 207 is fitted onto the outside of the support cylinder 202, and the sleeve 207 structure can support the toothed ring 206. A limit ring 208 is slidably connected to the outside of the support cylinder 202. A buffer spring 209 is fixedly connected to the end of the limit ring 208. The limit ring 208 structure can cooperate with the sleeve 207. By having the buffer spring 209 press the limit ring 208 against the end of the sleeve 207, the rotation of the sleeve 207 can be restricted, thereby locking the clamping structure after the wire clamping operation is completed.

[0030] Furthermore, a locking block 210 is rotatably connected to one side of the limiting ring 208, and a torsion spring is fixedly connected to the side of the locking block 210. The structure of the locking block 210 can cooperate with the limiting ring 208, allowing the locking block 210 to rotate only at a set angle. At the same time, the torsion spring, through its elasticity, causes the locking block 210 to rotate and adhere to the side wall of the sleeve 207. A slot 212 corresponding to the structure of the locking block 210 is opened on the side of the sleeve 207. The structure of the slot 212 can cooperate with the locking block 210, using the limitation of the rotation angle of the locking block 210 to lock the rotation of the sleeve 207.

[0031] It is worth noting that the top of the movable base 201 has a groove 3, and a slider 4 is fixedly connected to the outside of the support cylinder 202. The slider 4 is slidably connected inside the groove 3. The structure of the groove 3 can guide the movement of the support cylinder 202 and prevent the support cylinder 202 from rotating or shifting during movement. A pressure sensor 5 is fixedly connected inside the groove 3. The two ends of the pressure sensor 5 are fixed to the movable base 201 and the support cylinder 202, respectively. The tensile strength data of the wire can be obtained by detecting the pressure between the support cylinder 202 and the movable base 201.

[0032] Example 2

[0033] like Figures 1-2 As shown, based on Embodiment 1, the clamping mechanism 2 is provided with a driving mechanism 6 on its side. The driving mechanism 6 can drive and control the rotation of the clamping block 203 or the movement of the moving seat 201.

[0034] In this embodiment, the drive mechanism 6 includes a movable frame 601, which is slidably connected to the top of the frame 1. The movable frame 601 can support and adjust the movement of the entire drive device. A drive rod 602 is rotatably connected to the movable frame 601. Drive gears 603 that mesh with the gear ring 206 are fixedly connected to both ends of the drive rod 602. The drive rod 602 can drive the gear ring 206 through the drive gears 603.

[0035] Furthermore, the drive rod 602 has a bidirectional threaded 604 rod structure, and the side of the movable seat 201 has a threaded 604 that meshes with the drive rod 602. The drive rod 602 with its bidirectional threaded 604 rod structure can cooperate with the threaded 604 on the side of the movable seat 201. Rotation of the drive rod 602 causes the two movable seats 201 on both sides to move in opposite directions and continuously move away from each other, thus realizing the tensile strength test of the wire. A motor 605 is connected to the end of the drive rod 602, providing power for its rotation. A fastening bolt 606 is engaged at the top of the movable frame 601, allowing the movable frame 601 to be fixed after adjustment.

[0036] In use, the tensile strength testing device for electrical wires of this invention first inserts both ends of the electrical wire into the support cylinder 202, positioning them inside the clamping block 203. Then, the motor 605 is started, which drives the drive gear 603 via the drive rod 602, which in turn drives the gear ring 206 to rotate. As the gear ring 206 rotates, it drives multiple transmission gears 205 on its inner side to rotate synchronously. The clamping block 203 rotates synchronously under the drive of the transmission gears 205, clamping and fixing both ends of the wire. Simultaneously with the rotation of the gear ring 206, the sleeve 207 on the gear ring 206 rotates synchronously, causing the locking blocks 210 to switch between different slots 212. When the drive sleeve 207 stops rotating, the locking blocks 210 in the slots 212 restrict the reverse rotation of the sleeve 207, thus maintaining the wire ends in a tightly clamped state.

[0037] Subsequently, motor 605 stops moving and the moving frame 601 continues to move away from the moving base 201. Drive gear 603 then disengages from gear ring 206. When the moving frame 601 reaches its end, drive rod 602 engages with thread 604 on the moving base 201, and the moving frame 601 is locked in place by fastening bolt 606. Then, motor 605 is restarted, and drive rod 602 rotates, driving the two moving bases 201 to move. During movement, the moving bases 201 stretch the wire to both ends. The tensile strength test value of the wire can be obtained through pressure sensor 5 between the moving base 201 and the support cylinder 202.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the tensile strength of electrical wires, comprising a frame (1), characterized in that: The frame (1) is provided with a clamping mechanism (2). The clamping mechanism (2) includes a movable seat (201). The movable seat (201) is symmetrically arranged on both sides of the top of the frame (1). A support cylinder (202) is connected to the movable seat (201). A clamping block (203) is rotatably connected to the inner side of the support cylinder (202). A support shaft (204) is fixedly connected to the clamping block (203). A transmission gear (205) is fixedly connected to the end of the support shaft (204). A gear ring (206) is meshed with the outer side of the transmission gear (205).

2. The tensile strength testing device for electrical wires according to claim 1, characterized in that: A sleeve (207) is fixedly connected to the toothed ring (206). The sleeve (207) is sleeved on the outside of the support cylinder (202). A limit ring (208) is slidably connected to the outside of the support cylinder (202). A buffer spring (209) is fixedly connected to the end of the limit ring (208).

3. The tensile strength testing device for electrical wires according to claim 2, characterized in that: The limiting ring (208) is rotatably connected to a locking block (210) on one side, and a torsion spring is fixedly connected to the side of the locking block (210). The sleeve (207) has a locking groove (212) on its side that corresponds to the structure of the locking block (210).

4. The tensile strength testing device for electrical wires according to claim 1, characterized in that: The top of the movable seat (201) is provided with a sliding groove (3), and a slider (4) is fixedly connected to the outside of the support cylinder (202). The slider (4) is slidably connected inside the sliding groove (3), and a pressure sensor (5) is fixedly connected inside the sliding groove (3).

5. The tensile strength testing device for electrical wires according to claim 4, characterized in that: The clamping mechanism (2) is provided with a driving mechanism (6) on its side. The driving mechanism (6) includes a movable frame (601), which is slidably connected to the top of the frame (1). A driving rod (602) is rotatably connected to the movable frame (601), and driving gears (603) that mesh with the gear ring (206) are fixedly connected to both ends of the driving rod (602).

6. The tensile strength testing device for electrical wires according to claim 5, characterized in that: The drive rod (602) is a bidirectional threaded (604) rod structure. The side of the moving seat (201) is provided with a thread (604) that meshes with the drive rod (602). The end of the drive rod (602) is connected to a motor (605).

7. The tensile strength testing device for electrical wires according to claim 5, characterized in that: The top of the movable frame (601) is engaged with a fastening bolt (606).

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