Device for detecting tensile strength of steel strand

Abstract

The invention discloses a steel strand tensile strength detection device, and relates to the technical field of steel strand strength detection.The steel strand tensile strength detection device comprises a test rack body, a sliding rail and a moving block, the sliding rail is installed on the side wall of the rear side of the test rack body, the moving block is arranged in the sliding rail, and second push frames are installed on the two sides in the test rack body; the outer wall of the second pushing frame is sleeved with a double-face chuck frame matched with the inner wall of the moving block, a plurality of positioning shafts are installed in the double-face chuck frame, positioning frames are arranged on the outer walls of the positioning shafts, clamping frames are fixedly installed on the outer walls of the positioning frames through bolts, and clamping pieces are installed on the inner side walls of the clamping frames. Steel strand bodies are clamped between the inner walls of the clamping pieces, wear-resistant layers are arranged on the outer walls of the clamping pieces, the device is provided with a clamping frame for opening and closing displacement, the steel strand bodies on the two sides can be conveniently and automatically clamped, and the structure can synchronously detect the two sets of steel strand bodies at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of steel strand strength detection, in particular to a steel strand tensile strength detection device. Background Art

[0002] Steel strand is a steel product composed of multiple steel wires twisted together. The carbon steel surface can be coated with galvanized layer, zinc-aluminum alloy layer, aluminum clad layer, copper plating layer, epoxy resin coating, etc. as needed. After the steel strand is produced, a series of tests are required to determine whether the produced steel strand is qualified. The tensile strength test is an important test step.

[0003] However, CN215115519U The utility model relates to the technical field of steel strand detection, in particular to a steel strand tensile strength detection device, which can conveniently limit the positions of the two ends of the steel strand, reduce the situation of the steel strand falling off, thereby improving the detection effect of the steel strand and improving practicality; it includes two groups of rotating shafts, two groups of movable frames, two groups of cylinders, two groups of telescopic rods, two groups of limit blocks, multiple groups of adjusting threaded rods, multiple groups of limit seats, multiple groups of limit bolts and fixed frames, the two groups of rotating shafts are respectively provided with multiple groups of rotating handles, the multiple groups of limit bolts are respectively screwed through the multiple groups of first threaded holes and screwed into the multiple groups of threaded grooves, the two groups of limit blocks are respectively provided with multiple groups of second threaded holes, and the two groups of limit slots are respectively provided with multiple groups of slots, the multiple groups of adjusting threaded rods are respectively screwed through the multiple groups of second threaded holes and inserted into the multiple groups of slots, and the multiple groups of adjusting threaded rods are respectively rotatably connected to the multiple groups of slots, and the tops of the multiple groups of adjusting threaded rods are respectively provided with multiple groups of rotating handles.

[0004] The steel strand tensile strength testing device has the following problems during use: the traditional tensile drive equipment can only perform tensile testing on one steel strand, and the working time is long. When testing multiple strands, multiple clamping is required, and the working efficiency is low. In addition, the clamping blocks used when clamping the steel strands have poor wear resistance and are prone to falling off. Summary of the Invention

[0005] The purpose of the present invention is to provide a steel strand tensile strength detection device to solve the related problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a steel strand tensile strength testing device, comprising a test frame, a slide rail and a moving block, the rear side wall of the test frame is installed with a slide rail, and a moving block is arranged inside the slide rail, second push frames are installed on both sides of the interior of the test frame, and the outer wall of the second push frame is provided with a double-sided chuck frame that is compatible with the inner wall of the moving block, a plurality of positioning shafts are installed inside the double-sided chuck frame, and the outer wall of the positioning shaft is provided with a positioning frame, a clamping frame is fixed to the outer wall of the positioning frame by bolts, and a clamping piece is installed on the inner side wall of the clamping frame, the steel strand body is clamped between the inner walls of the clamping piece, the outer wall of the clamping piece is provided with a wear-resistant layer, and a transmission mechanism for driving the clamping frame to clamp synchronously is provided inside the double-sided chuck frame.

[0007] The present technical solution provides a steel strand tensile strength detection device, wherein the inner side wall of the test frame is provided with a marking line, and the outer wall of the steel strand body is pasted with a resistance strain gauge and a force-sensitive resistor.

[0008] The present technical solution provides a steel strand tensile strength testing device, wherein the side walls of the test frame are hinged with door panels, a guide rod is provided inside the test frame, and a slider connected to a double-sided chuck frame is sleeved on the outer wall of the guide rod.

[0009] The present technical solution provides a steel strand tensile strength testing device, wherein a motor is provided inside the test frame, and a screw rod penetrating a moving block is installed at the output end of the motor through a coupling, and the outer wall of the screw rod is engaged with the inner wall of the moving block.

[0010] The present technical solution provides a steel strand tensile strength detection device, wherein conical positioning blocks are attached to both ends of the steel strand body, and the outer walls of the conical positioning blocks are adapted to the clamping pieces.

[0011] The present technical solution provides a steel strand tensile strength detection device, wherein the wear-resistant coating is a silicon carbide ceramic coating.

[0012] The present technical solution provides a steel strand tensile strength detection device, wherein the transmission mechanism includes a fixed shaft and a semicircular gear, fixed shafts are installed on both sides of the inner part of the double-sided chuck frame through bearings, and the outer wall of the fixed shaft is provided with a semicircular gear, the outer wall of the fixed shaft is installed with a fixed frame, and the top end of the fixed frame is hinged with a first push frame hinged to one side of the positioning frame, the inner wall of the double-sided chuck frame is provided with a cylinder, and the output end of the cylinder is installed with a rack meshing with the outer wall of the semicircular gear.

[0013] The present technical solution provides a steel strand tensile strength detection device, wherein the top end of the rack is hingedly connected to a second push frame hingedly connected to the outer wall of the positioning frame.

[0014] Compared with the prior art, the present invention provides a steel strand tensile strength detection device with the following beneficial effects:

[0015] 1. The present invention drives the screw to rotate by starting the motor, so that the screw drives the moving block to move in the slide rail, and then the double-sided chuck frame clamps the steel strand body through the positioning frame position for stretching, and measures the change in the length of the steel strand body by the position marking line at the test frame to determine the tensile deformation and tension of the steel strand. In addition, by pasting the resistance strain gauge on the surface of the steel strand, the resistance change of the strain gauge is used to measure the strain of the steel strand. In addition, by pasting a force-sensitive resistor on the smooth surface of the steel strand body, the strain of the steel strand body can be calculated by calculating the change in resistance at the force-sensitive resistor, so that one driving device can measure multiple steel strand body qualities.

[0016] 2. The present invention starts the cylinder to drive the rack to engage with the outer wall of the semicircular gear, thereby driving the first push frame and the second push frame to drive the positions on both sides of the positioning frame to flip around the positioning axis, making it easy to open and close the clamping frame, so as to automatically clamp the steel strands on both sides. This structure can simultaneously detect two groups of steel strands through a set of driving equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a top cross-sectional structure of the present invention;

[0018] Figure 2 It is a right side cross-sectional structural schematic diagram of the present invention;

[0019] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0020] Figure 4 This is a schematic diagram of the main structure of the present invention;

[0021] Figure 5 It is a right-side structural schematic diagram of the present invention.

[0022] In the figure: 1. Test frame; 2. Slide rail; 3. Moving block; 4. Double-sided chuck frame; 5. Positioning shaft; 6. Positioning frame; 7. Fixed shaft; 8. Semicircular gear; 9. Fixed frame; 10. Cylinder; 11. Rack; 12. First push frame; 13. Second push frame; 14. Clamping frame; 15. Steel strand body; 16. Door panel; 17. Motor; 18. Screw; 19. Clip; 20. Conical positioning block; 21. Guide rod. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1, as Figure 1-2 As shown, the present invention provides a technical solution: a steel strand tensile strength testing device, comprising a test frame 1, a slide rail 2 and a moving block 3, the slide rail 2 is installed on the rear side wall of the test frame 1, and the moving block 3 is arranged inside the slide rail 2, second push frames 13 are installed on both sides of the inside of the test frame 1, and the outer wall of the second push frame 13 is provided with a double-sided chuck frame 4 adapted to the inner wall of the moving block 3, a plurality of positioning shafts 5 are installed inside the double-sided chuck frame 4, and the outer wall of the positioning shaft 5 is provided with a positioning frame 6, the outer wall of the positioning frame 6 is fixed with a clamping frame 14 by bolts, and the inner side wall of the clamping frame 14 is provided with a clip 19, and a steel strand body 15 is clamped between the inner walls of the clip 19, the inner side wall of the test frame 1 is provided with a marking line, and the outer wall of the steel strand body 15 is pasted with a resistance strain gauge and a force-sensitive resistor. The two side walls of the test frame 1 are hinged with door panels 16, and a guide rod 21 is provided inside the test frame 1 , and the outer wall of the guide rod 21 is provided with a slider connected to the double-sided chuck frame 4, the interior of the test frame 1 is provided with a motor 17, and the output end of the motor 17 is installed with a screw rod 18 passing through the moving block 3 through a coupling, and the outer wall of the screw rod 18 is engaged with the inner wall of the moving block 3, and the screw rod 18 is driven to rotate by starting the motor 17, so that the screw rod 18 drives the moving block 3 to move in the slide rail 2, and then the double-sided chuck frame 4 clamps the steel strand body 15 through the positioning frame 6 position for stretching, and the change in the length of the steel strand body 15 is measured by the position marking line at the test frame 1 to determine the tensile deformation and tension of the steel strand. In addition, by pasting a resistance strain gauge on the surface of the steel strand, the strain amount of the steel strand is measured by using the resistance change of the strain gauge. In addition, by pasting a force-sensitive resistor on the smooth surface of the steel strand body 15, the strain amount of the steel strand body 15 can be calculated by calculating the change in resistance at the force-sensitive resistor.

[0025] Example 2, as Figure 1-4As shown, the present invention provides a technical solution: a steel strand tensile strength testing device, comprising a wear-resistant layer provided on the outer wall of a clip 19, tapered positioning blocks 20 pasted on both ends of a steel strand body 15, and the outer wall of the tapered positioning block 20 is adapted to the clip 19, the wear-resistant coating is a silicon carbide ceramic coating, the tapered positioning block 20 at the steel strand body 15 is placed between the clips 19, and the silicon carbide ceramic coating 1 is added to the outer wall of the clip 19, and under a certain contact stress condition, it fits tightly with the tapered positioning block 20, and the smaller the surface roughness value, The higher the fatigue wear resistance, in addition, the clip 19 adopts a bimetallic composite wear-resistant steel plate, which is mainly composed of two parts: a low-carbon steel plate and an alloy wear-resistant layer. The two parts perform their respective functions. The low-carbon steel plate has super strength and toughness, while the alloy wear-resistant layer has good wear resistance. The two parts cooperate with each other to form a powerful wear-resistant steel plate. During the wear process, the bimetallic composite wear-resistant steel plate has high strength and can provide good support for the wear hard phase, giving full play to the wear-resistant hard phase's ability to resist wear, so that the wear-resistant material exhibits excellent wear resistance.

[0026] Example 3, as Figure 1-5 As shown, the present invention provides a technical solution: a steel strand tensile strength testing device, comprising a double-sided chuck frame 4 provided with a transmission mechanism for driving a clamping frame 14 for synchronous clamping, the transmission mechanism comprising a fixed shaft 7 and a semicircular gear 8, the fixed shaft 7 is mounted on both sides of the double-sided chuck frame 4 through bearings, and the outer wall of the fixed shaft 7 is provided with a semicircular gear 8, the outer wall of the fixed shaft 7 is provided with a fixed frame 9, and the top of the fixed frame 9 is hinged with a first push frame 12 hinged to one side of the positioning frame 6, the inner wall of the double-sided chuck frame 4 is provided with a fixed shaft 7 and a semicircular gear 8, There is a cylinder 10, and a rack 11 meshing with the outer wall of the semicircular gear 8 is installed at the output end of the cylinder 10. The top of the rack 11 is hinged with a second push frame 13 hinged with the outer wall of the positioning frame 6. When the cylinder 10 is started, the rack 11 is driven to mesh with the outer wall of the semicircular gear 8, which drives the first push frame 12 and the second push frame 13 to drive the positions on both sides of the positioning frame 6 to flip around the positioning axis 5, making it convenient to open and close the clamping frame 14, so as to facilitate the automatic clamping of the steel strands 15 on both sides. This structure can simultaneously detect two groups of steel strands 15.

[0027] Working principle: First, turn on the external power supply, and the operator opens the door panel 16. The conical positioning block 20 at the steel strand body 15 can be placed between the clips 19. By adding a silicon carbide ceramic coating to the outer wall of the clip 19, it fits tightly with the conical positioning block 20 under certain contact stress conditions. The smaller the surface roughness value, the higher the fatigue wear resistance. In addition, the clip 19 uses a bimetallic composite wear-resistant steel plate to increase the wear resistance. Then the cylinder 10 can be started to drive the rack 11 to engage with the outer wall of the semicircular gear 8, which drives the first push frame 12 and the second push frame 13 to drive the two sides of the positioning frame 6 to flip around the positioning axis 5, making it easier to open and close the clamping frame 14. The steel strand bodies 15 on both sides are automatically clamped, and then the motor 17 is started to drive the screw rod 18 to rotate, so that the screw rod 18 drives the moving block 3 to move in the slide rail 2, and then the double-sided chuck frame 4 clamps the steel strand body 15 through the positioning frame 6 position for stretching, and the change in the length of the steel strand body 15 is measured by the position marking line at the test frame 1 to determine the tensile deformation and tension of the steel strand. In addition, by pasting the resistance strain gauge on the surface of the steel strand, the resistance change of the strain gauge is used to measure the strain of the steel strand. In addition, by pasting a force-sensitive resistor on the smooth surface of the steel strand body 15, the strain of the steel strand body 15 can be calculated by calculating the change in resistance at the force-sensitive resistor.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A steel strand tensile strength testing device, comprising a test frame (1), a slide rail (2) and a moving block (3), characterized in that: The test frame (1) is provided with a slide rail (2) on the rear side wall, and a moving block (3) is provided inside the slide rail (2). Second push frames (13) are provided on both sides inside the test frame (1), and the outer wall of the second push frame (13) is provided with a double-sided chuck frame (4) adapted to the inner wall of the moving block (3). A plurality of positioning shafts (5) are provided inside the double-sided chuck frame (4), and a positioning frame (6) is provided on the outer wall of the positioning shaft (5). A clamping frame (14) is fixed to the outer wall of the positioning frame (6) by bolts, and a clamping piece (19) is provided on the inner side wall of the clamping frame (14). A steel strand (15) is clamped between the inner walls of the clamping piece (19), and a wear-resistant layer is provided on the outer wall of the clamping piece (19). A transmission mechanism for driving the clamping frame (14) to clamp synchronously is provided inside the double-sided chuck frame (4).

2. A steel strand tensile strength testing device according to claim 1, characterized in that: The inner side wall of the test frame (1) is provided with a marking line, and the outer wall of the steel strand body (15) is pasted with a resistance strain gauge and a force-sensitive resistor.

3. The steel strand tensile strength testing device according to claim 1, characterized in that: Door panels (16) are hingedly connected to the side walls of the test frame (1). A guide rod (21) is provided inside the test frame (1), and a sliding block connected to the double-sided chuck frame (4) is sleeved on the outer wall of the guide rod (21).

4. The steel strand tensile strength testing device according to claim 1, characterized in that: A motor (17) is provided inside the test frame (1), and a screw rod (18) penetrating the moving block (3) is installed at the output end of the motor (17) via a coupling, and the outer wall of the screw rod (18) is engaged with the inner wall of the moving block (3).

5. The steel strand tensile strength testing device according to claim 1, characterized in that: Conical positioning blocks (20) are pasted on both ends of the steel strand body (15), and the outer wall of the conical positioning block (20) is adapted to the clamping piece (19).

6. The steel strand tensile strength testing device according to claim 1, characterized in that: The wear-resistant coating is a silicon carbide ceramic coating.

7. The steel strand tensile strength testing device according to claim 1, characterized in that: The transmission mechanism comprises a fixed shaft (7) and a semicircular gear (8); the fixed shaft (7) is mounted on both sides of the double-sided chuck frame (4) via bearings, and the outer wall of the fixed shaft (7) is provided with a semicircular gear (8); the outer wall of the fixed shaft (7) is provided with a fixed frame (9), and the top end of the fixed frame (9) is hingedly connected to a first push frame (12) hingedly connected to one side of the positioning frame (6); the inner wall of the double-sided chuck frame (4) is provided with a cylinder (10), and the output end of the cylinder (10) is provided with a rack (11) meshing with the outer wall of the semicircular gear (8).

8. The steel strand tensile strength testing device according to claim 7, characterized in that: The top end of the rack (11) is hingedly connected to a second push frame (13) which is hingedly connected to the outer wall of the positioning frame (6).

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