Tensile testing machine for steel bar material

Abstract

The utility model discloses a tensile testing machine for a reinforcing steel bar material, and relates to the technical field of tensile testing of reinforcing steel bar materials. The device comprises a test box, a stretching assembly and a clamping assembly, a plurality of supporting rods are fixedly arranged at the bottom of the test box and installed on an external rack, the stretching assembly is installed in the test box and comprises a first moving plate and a second moving plate, a first sliding strip is fixedly arranged at the bottom of the first moving plate, and a second sliding strip is fixedly arranged at the bottom of the second moving plate. A first sliding strip is fixedly arranged at the bottom of the first moving plate and is in sliding fit with the inner bottom of the test box, a second sliding strip is fixedly arranged at the bottom of the second moving plate and is in sliding fit with the inner bottom of the test box, clamping assemblies are installed at the tops of the first moving plate and the second moving plate, and each clamping assembly comprises two arc-shaped plates, and positioning plates are fixedly arranged on the circumferential side faces of the arc-shaped plates; the first moving plate and the second moving plate are in sliding fit with the corresponding positioning plates. According to the utility model, through the specific structural design of each structure of the test box, the stretching assembly and the clamping assembly, the accuracy of the testing machine is improved.

Description

Technical Field

[0001] This utility model belongs to the field of tensile testing technology for reinforcing steel materials, and in particular relates to a tensile testing machine for reinforcing steel materials. Background Technology

[0002] Reinforcing bars refer to steel used in reinforced concrete and prestressed reinforced concrete. Their cross-section is circular, and sometimes square with rounded corners. During the production process, reinforcing bars need to be tested using a reinforcing bar testing machine. A reinforcing bar testing machine is a device used to test the conventional mechanical properties of various metals, non-metals, and composite materials.

[0003] Current rebar testing machines fix the rebar material with two clamps and then control the clamps to stretch the rebar to determine if it breaks. This testing equipment has a simple structure, but the rebar is prone to slippage between the clamps and the clamps, which reduces the accuracy of the test. To address this, we provide a rebar tensile testing machine to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a tensile testing machine for reinforcing steel materials. Through the specific structural design of the test chamber, tensile components and clamping components, the problem of slippage between the gripper and the reinforcing steel in existing testing machines is solved.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a tensile testing machine for reinforcing steel materials, including a test chamber, a tensile component, and a clamping component. Several support rods are fixedly installed at the bottom of the test chamber, and the support rods are mounted on an external frame. The tensile component is installed inside the test chamber, and the tensile component includes a first moving plate and a second moving plate. A first sliding strip is fixedly installed at the bottom of the first moving plate, and the first sliding strip slides in cooperation with the bottom of the test chamber. A second sliding strip is fixedly installed at the bottom of the second moving plate, and the second sliding strip slides in cooperation with the bottom of the test chamber. Clamping components are installed at the top of both the first and second moving plates. Each clamping component includes two arc-shaped plates, and positioning plates are fixedly installed on the periphery of the arc-shaped plates. The first and second moving plates slide in cooperation with their corresponding positioning plates.

[0006] The present invention is further provided that an observation window is provided on one side of the test chamber, the observation window is made of transparent material, a detachable closed door is installed on the other side of the test chamber, and a drive motor is installed at the bottom of the test chamber.

[0007] The present invention is further configured such that a first limiting strip is fixedly provided at the bottom of the first movable plate, the first limiting strip is slidably engaged with the test chamber, and a first toothed rack is fixedly provided on one side of the first limiting strip, the first toothed rack is slidably engaged with the test chamber.

[0008] The present invention is further configured such that a second limiting strip is fixedly provided at the bottom of the second movable plate, the second limiting strip is slidably engaged with the test chamber, and a second rack is fixedly provided on one side of the second limiting strip, the second rack being slidably engaged with the test chamber.

[0009] The present invention is further configured such that a drive gear is rotatably arranged at the bottom of the test chamber, the output end of the drive motor is fixedly connected to the drive gear, and both the first rack and the second rack mesh with the drive gear.

[0010] The present invention is further configured such that a first baffle is fixedly provided on the top of the first movable plate, a second baffle is fixedly provided on the top of the second movable plate, a tension sensor is installed on the top of both the first and second movable plates, and a cylinder is installed on one side of both the first and second baffles.

[0011] The present invention is further configured such that a connecting plate is fixedly provided at the output end of the cylinder, the first moving plate and the second moving plate are both slidably engaged with the corresponding connecting plate, a linkage plate is fixedly provided on one side of the connecting plate, a moving rod is fixedly provided at the bottom of the linkage plate, and the first moving plate and the second moving plate are both slidably engaged with the corresponding moving rod.

[0012] The present invention is further configured such that a plurality of linkage rods are rotatably provided at the bottom of the linkage plate, a connecting rod is fixedly provided on one side of the positioning plate, the connecting rod and the corresponding linkage rod are rotatably engaged, a threaded hole is provided on the circumferential side of the arc plate, a threaded rod is threaded inside the threaded hole, and a rubber ring is sleeved on one end of the threaded rod.

[0013] The present invention has the following beneficial effects: 1. The present invention moves the connecting plate by controlling the movement of the cylinder output end, and the movement of the linkage plate drives the corresponding linkage rod to rotate, so that the two connecting rods move towards each other, thereby driving the corresponding positioning plate to move towards each other, and the corresponding arc plate to move towards each other until the steel reinforcement material is tightly clamped. Then, the position of the arc plate and the steel reinforcement material is fixed by the threaded rod, which further limits the position of the steel reinforcement material and improves the stability of the steel reinforcement material.

[0014] 2. This utility model uses a drive motor to drive a drive gear to rotate. The first rack and the second rack move away from each other, causing the first moving plate and the second moving plate to move away from each other. During this process, the steel bar is stretched until it breaks. The tension sensor tests the tension on both sides, and then the fracture of the steel bar is observed and recorded through the observation window, which improves the accuracy of the test results.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a tensile testing machine for reinforcing steel.

[0018] Figure 2 for Figure 1 A structural sectional view.

[0019] Figure 3 This is a schematic diagram of the structure of the test chamber in this utility model.

[0020] Figure 4 for Figure 3 Another structural diagram from a different angle.

[0021] Figure 5 This is a schematic diagram of the tensioning component in this utility model.

[0022] Figure 6 This is a schematic diagram of the clamping component in this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1-Test chamber, 101-Support rod, 102-Observation window, 103-Closed door, 104-Drive motor, 2-Tension assembly, 201-First moving plate, 202-Second moving plate, 203-Second sliding bar, 204-First limiting bar, 205-First rack, 206-Second limiting bar, 207-Second rack, 208-Drive gear, 209-First baffle, 210-Second baffle, 211-Tension sensor, 212-First sliding bar, 3-Clamping assembly, 301-Arc plate, 302-Positioning plate, 303-Cylinder, 304-Connecting plate, 305-Linkage plate, 306-Threaded rod, 307-Linkage rod, 308-Connecting rod. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] For a specific implementation example, please refer to Implementation Example 1. Figure 1-6 This utility model is a tensile testing machine for reinforcing steel materials, including a test chamber 1, a tensile assembly 2, and a clamping assembly 3. Several support rods 101 are fixedly installed at the bottom of the test chamber 1 and are mounted on an external frame. The tensile assembly 2 is installed inside the test chamber 1 and includes a first moving plate 201 and a second moving plate 202. A first sliding strip 212 is fixedly installed at the bottom of the first moving plate 201 and slides in cooperation with the bottom of the test chamber 1. A second sliding strip 203 is fixedly installed at the bottom of the second moving plate 202 and slides in cooperation with the bottom of the test chamber 1. The clamping assembly 3 is installed on the top of both the first moving plate 201 and the second moving plate 202. The clamping assembly 3 includes two arc-shaped plates 301 and positioning plates 302 are fixedly installed on the periphery of the arc-shaped plates 301. The first moving plate 201 and the second moving plate 202 slide in cooperation with the corresponding positioning plates 302.

[0027] Specifically, an observation window 102 is provided on one side of the test chamber 1. The observation window 102 is made of transparent material. A detachable closed door 103 is installed on the other side of the test chamber 1. A drive motor 104 is installed at the bottom of the test chamber 1. A first limiting strip 204 is fixedly provided at the bottom of the first moving plate 201. The first limiting strip 204 slides with the test chamber 1. A first rack 205 is fixedly provided on one side of the first limiting strip 204. The first rack 205 slides with the test chamber 1.

[0028] Furthermore, a second limiting strip 206 is fixedly installed at the bottom of the second moving plate 202, and the second limiting strip 206 is slidably engaged with the test chamber 1. A second rack 207 is fixedly installed on one side of the second limiting strip 206, and the second rack 207 is slidably engaged with the test chamber 1. A drive gear 208 is rotatably installed at the bottom of the test chamber 1. The output end of the drive motor 104 is fixedly connected to the drive gear 208. The first rack 205 and the second rack 207 are both meshed with the drive gear 208. A first baffle 209 is fixedly installed on the top of the first moving plate 201, and a second baffle 210 is fixedly installed on the top of the second moving plate 202. A tension sensor 211 is installed on the top of both the first moving plate 201 and the second moving plate 202. A cylinder 303 is installed on one side of both the first baffle 209 and the second baffle 210.

[0029] The operation process of this embodiment is as follows: In the initial state, the first moving plate 201 and the second moving plate 202 are closest to each other, and the two arc plates 301 are not in contact. Then, the two ends of the steel bar are placed between the corresponding two arc plates 301. Then, the sealing door 103 is closed. Then, the steel bar is tightly clamped by the clamping assembly 3. Then, the drive motor 104 drives the drive gear 208 to rotate. The first rack 205 and the second rack 207 move away from each other, causing the first moving plate 201 and the second moving plate 202 to move away from each other. During this process, the steel bar is stretched until it breaks. The tension sensor 211 will test the tension on both sides. Then, the fracture of the steel bar is observed and recorded through the observation window 102. After the steel bar is tested, the sealing door 103 is opened, the clamping assembly 3 is released from the steel bar, and a new steel bar to be tested is placed.

[0030] In the second specific embodiment, based on the first specific embodiment, a connecting plate 304 is fixedly provided at the output end of the cylinder 303. The first moving plate 201 and the second moving plate 202 are both slidably engaged with the corresponding connecting plate 304. A linkage plate 305 is fixedly provided on one side of the connecting plate 304. A moving rod is fixedly provided at the bottom of the linkage plate 305. The first moving plate 201 and the second moving plate 202 are both slidably engaged with the corresponding moving rod.

[0031] Specifically, the bottom of the linkage plate 305 is rotatably provided with several linkage rods 307, and the side of the positioning plate 302 is fixedly provided with a connecting rod 308. The connecting rod 308 and the corresponding linkage rod 307 are rotatably engaged. The side of the arc plate 301 is provided with a threaded hole, and a threaded rod 306 is threaded inside the threaded hole. A rubber ring is fitted at one end of the threaded rod 306.

[0032] The operation process of this embodiment is as follows: In the initial state, the two arc-shaped plates 301 are farthest apart, that is, the two arc-shaped plates 301 are not in contact, and the linkage rod 307 is in a horizontal position. When the reinforcing bar is placed between the corresponding two clamping plates 301, the output end of the control cylinder 303 moves to drive the connecting plate 304 to move, and the linkage plate 305 moves to drive the corresponding linkage rod 307 to rotate, so that the two connecting rods 308 move towards each other, driving the corresponding positioning plate 302 to move towards each other. The corresponding arc-shaped plates 302 move towards each other until the reinforcing bar is tightly clamped, and then through the thread... Rod 306 fixes the position of the arc plate 301 and the reinforcing steel material, further defining the position of the reinforcing steel material. When the measurement is completed and the limitation of the reinforcing steel material needs to be released, the threaded rod 306 releases the position limitation of the reinforcing steel material. Then, the output end of the control cylinder 303 moves in the opposite direction, driving the connecting plate 304 to move in the opposite direction. The linkage plate 305 moves in the opposite direction, driving the corresponding linkage rod 307 to rotate in the opposite direction. This causes the two connecting rods 308 to move away from each other, driving the corresponding positioning plate 302 to move away from each other. The corresponding arc plate 302 moves away from each other until the reinforcing steel material is released from clamping.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tensile testing machine for reinforcing steel, characterized in that, include: Test chamber (1), the bottom of the test chamber (1) is fixedly provided with several support rods (101), the support rods (101) are installed on the external frame; Tensile assembly (2), the tensile assembly (2) is installed inside the test chamber (1), the tensile assembly (2) includes a first moving plate (201) and a second moving plate (202), the bottom of the first moving plate (201) is fixedly provided with a first sliding strip (212), the first sliding strip (212) slides in cooperation with the bottom of the test chamber (1), the bottom of the second moving plate (202) is fixedly provided with a second sliding strip (203), the second sliding strip (203) slides in cooperation with the bottom of the test chamber (1); And a clamping assembly (3), the first moving plate (201) and the second moving plate (202) are both equipped with a clamping assembly (3) on their tops. The clamping assembly (3) includes two arc-shaped plates (301). A positioning plate (302) is fixedly provided on the periphery of the arc-shaped plate (301). The first moving plate (201) and the second moving plate (202) are both slidably engaged with the corresponding positioning plate (302).

2. The tensile testing machine for reinforcing steel according to claim 1, characterized in that, The test chamber (1) is provided with an observation window (102) on one side, the observation window (102) is made of transparent material, the test chamber (1) is provided with a detachable closed door (103) on the other side, and a drive motor (104) is provided at the bottom of the test chamber (1).

3. The tensile testing machine for reinforcing steel according to claim 2, characterized in that, The bottom of the first movable plate (201) is fixedly provided with a first limiting strip (204), which slides with the test chamber (1). A first rack (205) is fixedly provided on one side of the first limiting strip (204), which slides with the test chamber (1).

4. The tensile testing machine for reinforcing steel according to claim 3, characterized in that, The bottom of the second movable plate (202) is fixedly provided with a second limiting strip (206), which slides with the test chamber (1). A second rack (207) is fixedly provided on one side of the second limiting strip (206), which slides with the test chamber (1).

5. A tensile testing machine for reinforcing steel according to claim 4, characterized in that, The test chamber (1) is rotatably equipped with a drive gear (208) at the bottom. The output end of the drive motor (104) is fixedly connected to the drive gear (208). The first rack (205) and the second rack (207) are both meshed with the drive gear (208).

6. A tensile testing machine for reinforcing steel according to claim 5, characterized in that, A first baffle (209) is fixedly installed on the top of the first movable plate (201), and a second baffle (210) is fixedly installed on the top of the second movable plate (202). A tension sensor (211) is installed on the top of both the first movable plate (201) and the second movable plate (202), and a cylinder (303) is installed on one side of both the first baffle (209) and the second baffle (210).

7. A tensile testing machine for reinforcing steel according to claim 6, characterized in that, A connecting plate (304) is fixedly provided at the output end of the cylinder (303), and the first moving plate (201) and the second moving plate (202) are both slidably engaged with the corresponding connecting plate (304); A linkage plate (305) is fixedly provided on one side of the connecting plate (304), and a moving rod is fixedly provided at the bottom of the linkage plate (305). The first moving plate (201) and the second moving plate (202) are both slidably engaged with the corresponding moving rod.

8. A tensile testing machine for reinforcing steel according to claim 7, characterized in that, The bottom of the linkage plate (305) is rotatably provided with a plurality of linkage rods (307), and a connecting rod (308) is fixedly provided on one side of the positioning plate (302). The connecting rod (308) and the corresponding linkage rod (307) are rotatably engaged. The arc plate (301) has a threaded hole on its circumferential side, and a threaded rod (306) is threaded inside the threaded hole. A rubber ring is fitted at one end of the threaded rod (306).

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