Elongation tester capable of rapidly clamping type wire rod

Abstract

The utility model discloses an elongation tester capable of quickly clamping a molded wire rod, which comprises a tester body and two placing blocks, one placing block is fixedly connected to the upper surface of the tester body, the other placing block is connected to the upper surface of the tester body in a sliding manner, and the two placing blocks are connected with the tester body in a sliding manner. Clamping mechanisms are arranged above the two placing blocks, through inclined plane matching of a first wedge-shaped plate and a second wedge-shaped plate of a linkage assembly, when a first threaded fastener is rotated to drive an upper pressing plate to move downwards, the first wedge-shaped plate synchronously presses downwards, horizontal component force of the wedge-shaped inclined plane is used for pushing the second wedge-shaped plate and a sliding block to move inwards, and the clamping mechanisms are clamped; compared with the mode that two locking bolts need to be operated respectively in the prior art, the structure can complete synchronous clamping on the upper side, the lower side and the two sides in the three-dimensional direction only by rotating the first threaded fastener once, and therefore the wire clamping efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of testing instrument body technology, and in particular to an elongation tester that can quickly clamp shaped wires. Background Technology

[0002] Enameled wire is widely used in the power industry, and the performance requirements for enameled wire in industry are getting higher and higher. Among them, elongation is an important parameter to reflect the performance of enameled wire. Elongation reflects the plastic deformation of enameled wire and can be used to assess the ductility of enameled wire. The testing instrument is a common instrument for testing the elongation of enameled wire.

[0003] A tester body with publication number CN211401945U includes a tester body, a movable fixture and a fixed fixture fixed to the tester body. Both the movable fixture and the fixed fixture include an upper clamp and a lower clamp connected to the tester body. The upper clamp is located above the lower clamp. A fixed plate is vertically connected between the upper clamp and the lower clamp. An upper pressure plate is arranged parallel between the upper clamp and the lower clamp. The upper clamp is provided with a first control element for controlling the contact between the upper pressure plate and the wire. A side pressure plate is also vertically arranged between the upper clamp and the lower clamp. The fixed plate is provided with a second control element for controlling the contact between the side pressure plate and the wire.

[0004] The above-mentioned device can increase the contact area between the wire and the clamp, and better clamp the wire. However, the device requires tightening two locking bolts to effectively fix the wire, which is cumbersome and makes it difficult to achieve rapid clamping of the wire. Utility Model Content

[0005] The purpose of this invention is to solve the problem of the difficulty in quickly clamping wires in the existing technology, and to provide an elongation tester that can quickly clamp wires.

[0006] To achieve the above objectives, the present invention adopts the following solution: an elongation tester capable of quickly clamping wire, comprising a tester body and two placement blocks, wherein one placement block is fixedly connected to the upper surface of the tester body, and the other placement block is slidably connected to the upper surface of the tester body, and a clamping mechanism is provided above both placement blocks.

[0007] The clamping mechanism includes a U-shaped plate fixedly connected to the upper surface of the tester body. A first threaded fastener is threadedly connected to the inside of the U-shaped plate. An upper pressure plate is slidably connected to the inside of the U-shaped plate, and the bottom surface of the first threaded fastener is rotatably mounted to the inside of the upper pressure plate. Two symmetrical sliders are slidably connected to the upper surface of the placement block. The sliders and the upper pressure plate are connected by a linkage component. Two side clamps are provided between the two sliders, and the side clamps and the sliders are connected by an adjustment component.

[0008] Preferably, the linkage component includes a first wedge plate fixedly connected to the bottom surface of the upper pressure plate, and a second wedge plate adapted to the first wedge plate is fixedly connected to the outer surface of the slider, and the inclined surface of the second wedge plate is in contact with the inclined surface of the first wedge plate.

[0009] Preferably, a support plate is fixedly connected to the upper surface of the slider, a spring is fixedly connected to the outer surface of the support plate, and the other end of the spring is fixedly connected to the inner wall of the U-shaped plate.

[0010] Preferably, the adjusting assembly includes a second threaded fastener threadedly connected inside the slider, one end of which is rotatably mounted inside the side clamp.

[0011] Preferably, a guide rod is fixedly connected to the side of the side clamp near the slider, and the guide rod is slidably inserted into the inside of the second wedge plate.

[0012] Preferably, a first flexible anti-slip pad is installed on the side of each of the two side clamps that are close to each other, and a second flexible anti-slip pad is installed on the bottom surface of the upper pressure plate.

[0013] Compared with existing technologies, this utility model has the following advantages:

[0014] 1. This utility model utilizes the inclined surfaces of the first and second wedge plates of the linkage assembly. When the first threaded fastener is rotated to drive the upper pressure plate to move downward, the first wedge plate presses down synchronously. The horizontal component of the wedge-shaped inclined surface pushes the second wedge plate and the slider to move inward, thereby achieving synchronous clamping action between the upper pressure plate and the side clamping plate. Compared with the prior art, which requires operating two locking bolts separately, this structure only needs to rotate the first threaded fastener once to complete the synchronous clamping in three dimensions, both vertically and horizontally, thus effectively improving the wire clamping efficiency.

[0015] 2. This utility model has an adjustment mechanism that allows the distance between the two clamping plates to be adjusted according to the model of the wire before clamping it, thereby enabling the clamping of wires of different models. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the placement block and clamping mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram showing the connection between the slider and the second threaded fastener of this utility model;

[0019] Figure 4 This is a cross-sectional view of the second wedge plate of this utility model.

[0020] Labels: 1. Tester body; 2. Placement block; 3. U-shaped plate; 4. First threaded fastener; 5. Upper pressure plate; 6. Side clamping plate; 7. Slider; 8. Second threaded fastener; 9. Guide rod; 10. First wedge plate; 11. Second wedge plate; 12. Spring; 13. Support plate; 14. First flexible anti-slip pad; 15. Second flexible anti-slip pad. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to embodiments:

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0023] like Figures 1 to 4 As shown, an elongation tester capable of quickly clamping wire includes a tester body 1 and two placement blocks 2. One placement block 2 is fixedly connected to the upper surface of the tester body 1, and the other placement block 2 is slidably connected to the upper surface of the tester body 1. A clamping mechanism is provided above both placement blocks 2 to fix the two ends of the wire to be tested onto the two placement blocks 2 respectively. The elongation of the wire is then measured by the displacement of one of the placement blocks 2. The slidably connected placement block 2 can be driven by a lead screw or guide rail mechanism inside the tester body 1 to achieve precise displacement control.

[0024] The clamping mechanism includes a U-shaped plate 3 fixedly connected to the upper surface of the tester body 1. A first threaded fastener 4 is threadedly connected inside the U-shaped plate 3. An upper pressure plate 5 is slidably connected inside the U-shaped plate 3. The bottom surface of the first threaded fastener 4 is rotatably mounted inside the upper pressure plate 5. Two symmetrical sliders 7 are slidably connected to the upper surface of the placement block 2. When the first threaded fastener 4 is turned, the upper pressure plate 5 can be raised or lowered accordingly. A T-shaped block is fixedly connected to the bottom surface of the slider 7. The T-shaped block is slidably connected inside the placement block 2.

[0025] The slider 7 and the upper pressure plate 5 are connected by a linkage assembly. The linkage assembly includes a first wedge plate 10 fixedly connected to the bottom surface of the upper pressure plate 5, a second wedge plate 11 adapted to the first wedge plate 10 fixedly connected to the outer surface of the slider 7, and the inclined surface of the second wedge plate 11 is in contact with the inclined surface of the first wedge plate 10. A support plate 13 is fixedly connected to the upper surface of the slider 7, and a spring 12 is fixedly connected to the outer surface of the support plate 13. The other end of the spring 12 is fixedly connected to the inner wall of the U-shaped plate 3. When the first threaded fastener 4 drives the upper pressure plate 5 to move downward, the inclined surface of the first wedge plate 10 pushes the second wedge plate 11 to move inward. At this time, the spring 12 is stretched and stores elastic potential energy. When the first threaded fastener 4 rotates in the opposite direction, the spring 12 releases potential energy and pushes the slider 7 to reset, realizing the automatic release of the clamping mechanism.

[0026] Two side clamps 6 are provided between the two sliders 7, and the side clamps 6 and the sliders 7 are connected by an adjustment assembly. The adjustment assembly includes a second threaded fastener 8 threaded inside the slider 7. One end of the second threaded fastener 8 is rotatably installed inside the side clamp 6. A guide rod 9 is fixedly connected to the side of the side clamp 6 near the slider 7. The guide rod 9 is slidably inserted into the inside of the second wedge plate 11. The inside of the second wedge plate 11 is provided with a guide hole that matches the guide rod 9. Before testing, the second threaded fastener 8 can be rotated according to the wire diameter to move the side clamp 6 horizontally through thread transmission and adjust the initial distance between the two side clamps 6.

[0027] The first threaded fastener 4 and the second threaded fastener 8 can be either screws or bolts.

[0028] Both side clamps 6 are fitted with a first flexible anti-slip pad 14 on their sides that are close to each other, and a second flexible anti-slip pad 15 is fitted on the bottom surface of the upper pressure plate 5. The flexible anti-slip pads are made of nitrile rubber and have parallel teeth pressed on their surface. When the side clamps 6 and the upper pressure plate 5 clamp the wire, the flexible anti-slip pads wrap around the surface of the wire through elastic deformation, and the teeth are embedded in the wire sheath to form a mechanical engagement. This not only meets the clamping force requirements for wire tensile testing, but also avoids wire damage caused by rigid clamping.

[0029] When testing the elongation of the wire, firstly, adjust the distance between the two clamping plates 6 by rotating the second threaded fastener 8 according to the diameter of the wire to be tested. Then, place the wire on the upper surface of the placement block 2, between the two clamping plates 6 and aligned with the center of the upper pressure plate 5. Then, rotate the first threaded fastener 4 clockwise to drive the upper pressure plate 5 to move vertically downward along the U-shaped plate 3. At this time, the inclined surface of the first wedge plate 10 pushes the second wedge plate 11 and the slider 7 to move inward. The two clamping plates 6 simultaneously clamp the sides of the wire, and the upper pressure plate 5 presses the top surface of the wire to achieve the fixation of the wire.

[0030] Finally, the tester body 1 is started, driving the sliding connection placement block 2 to move slowly in the horizontal direction. The wire undergoes plastic deformation under tension. The tester records displacement data and tension value in real time until the wire breaks. The system automatically calculates and displays the elongation.

[0031] After the test is completed, rotate the first threaded fastener 4 counterclockwise. The upper pressure plate 5 rises under the threaded transmission. The spring 12 releases its elastic potential energy to push the slider 7 outward. The side clamp 6 and the upper pressure plate 5 are released simultaneously, and then the wire can be taken out.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An extensibility tester capable of quickly clamping a wire, characterized by, Including test appearance body (1) and two placement piece (2), one of them The placement piece (2) is fixedly connected on the upper surface of the test appearance body (1), the other placement piece (2) is slidingly connected on the upper surface of the test appearance body (1), the upper surface of two placement pieces (2) is provided with clamping mechanism; The clamping mechanism includes a U-shaped plate (3) fixedly connected to the upper surface of the test appearance body (1), a first threaded fastener (4) threadedly connected inside the U-shaped plate (3), an upper pressing plate (5) slidingly connected inside the U-shaped plate (3), and the inside of the upper pressing plate (5) is rotatably mounted on the bottom surface of the first threaded fastener (4), the upper surface of the placement piece (2) is slidingly connected with two symmetrical sliding blocks (7), the sliding blocks (7) and the upper pressing plate (5) are connected through a linkage assembly, two side clamping plates (6) are arranged between the two sliding blocks (7), and the side clamping plates (6) and the sliding blocks (7) are connected through an adjusting assembly.

2. The quick-gripping type wire elongation tester according to claim 1, wherein The linkage assembly includes a first wedge-shaped plate (10) fixedly connected to the bottom surface of the upper pressing plate (5), a second wedge-shaped plate (11) fixedly connected to the outer surface of the sliding block (7) and matched with the first wedge-shaped plate (10), and the inclined surface of the second wedge-shaped plate (11) is in contact with the inclined surface of the first wedge-shaped plate (10).

3. The quick-grip wire elongation tester of claim 2, wherein, The upper surface of the sliding block (7) is fixedly connected with a support plate (13), the outer surface of the support plate (13) is fixedly connected with a spring (12), and the other end of the spring (12) is fixedly connected with the inner wall of the U-shaped plate (3).

4. The quick-grip wire elongation tester of claim 2, wherein, The adjusting assembly includes a second threaded fastener (8) threadedly connected inside the sliding block (7), and one end of the second threaded fastener (8) is rotatably mounted inside the side clamping plate (6).

5. The quick-grip wire elongation tester of claim 4, wherein, The side of the side clamping plate (6) close to the sliding block (7) is fixedly connected with a guide rod (9), and the guide rod (9) is slidingly inserted into the inside of the second wedge-shaped plate (11).

6. The quick-grip wire elongation tester of claim 1, wherein, The side of the side clamping plate (6) close to the sliding block (7) is fixedly connected with a guide rod (9), and the guide rod (9) is slidingly inserted into the inside of the second wedge-shaped plate (11). The side of the side clamping plate (6) close to the sliding block (7) is fixedly connected with a guide rod (9), and the guide rod (9) is slidingly inserted into the inside of the second wedge-shaped plate (11).

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