Steel strand deflection tensile testing machine
By designing a combination of support plate, fixing components, adjusting components and power drive components, the problem of slippage between anchor and steel strand in the steel strand skew tensile testing machine was solved, achieving higher test accuracy and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-04-14
AI Technical Summary
In existing steel strand skew tensile testing machines, the anchorage and steel strand are prone to slippage during the test, which reduces the accuracy of the tensile test.
A steel strand skew tensile testing machine was designed, comprising a support plate, a fixing component, an adjusting component, a tensile component, and a power drive component. By using a combination of limit anchors, clamping plates, adjusting wheels, and a motor, the stable clamping and tensile testing of the steel strand is ensured.
This improved the accuracy of the tensile test on steel strands, ensuring the reliability and precision of the test results.
Smart Images
Figure CN224122313U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of steel strand testing technology, and in particular relates to a steel strand skew tensile testing machine. Background Technology
[0002] Galvanized steel strand is typically used for load-bearing cables, guy wires, and reinforcing cores. It can also be used as ground wires for overhead power transmission, barrier cables along highways, or structural cables in building structures. Among prestressed steel strands, the most commonly used prestressed steel strands are uncoated low-relaxation prestressed steel strands, although galvanized ones are also available. They are commonly used in bridges, buildings, water conservancy, energy, and geotechnical engineering. Unbonded prestressed steel strands are commonly used in floor slabs and foundation engineering.
[0003] Existing steel strand skew tensile testing machines typically load or unload anchoring devices using axial loading devices and employ load sensors to ensure test accuracy. However, during steel strand skew tensile testing, specimen clamping is inconvenient, and slippage between the anchor and the steel strand can easily occur, reducing the accuracy of the steel strand tensile test. Therefore, we provide a steel strand skew tensile testing machine to solve the aforementioned problems. Utility Model Content
[0004] The purpose of this utility model is to provide a steel strand skew tensile testing machine. Through the specific structure of the support plate, fixing component, adjusting component, tensile component and power drive component, it solves the problem that the anchor and steel strand are prone to slippage in the existing steel strand testing machine, which reduces the accuracy of the tensile test.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a steel strand skew tensile testing machine, including a support plate, a fixing component, an adjusting component, a tensile component, and a power drive component. The support plate is installed on an external frame. The fixing component is installed on the top of the support plate and includes a limiting anchor. The limiting anchor has a first limiting port inside, and a steel strand is installed inside the first limiting port. The adjusting component is installed on the top of the support plate and includes a first adjusting wheel that slides with the support plate. The tensile component is installed on the top of the support plate and includes a tensile anchor. The tensile anchor has a second limiting port inside, and the second limiting port is connected to the other end of the steel strand. The power drive component is installed on the top of the support plate and includes a push plate that slides with the support plate.
[0006] The present invention is further configured such that a sliding cavity is provided at the top of the support plate, an arc-shaped plate is fixedly provided at the top of the sliding cavity, two positioning plates are fixedly provided at the top of the sliding cavity, a limit plate is fixedly provided inside the sliding cavity, a first motor is installed at the bottom of the support plate, and several support rods are fixedly provided at the bottom of the support plate.
[0007] The present invention is further configured such that the fixing component includes two clamping plates, the limiting anchor is installed between the two clamping plates, and a fixing chamber is fixedly provided on the top of the support plate, and the limiting anchor is inserted into the fixing chamber.
[0008] The present invention is further configured such that a load sensor is installed inside the fixed chamber, and limit frames are fixedly installed on both sides of the fixed chamber. A bidirectional threaded rod is rotatably arranged between the two limit frames, and the bidirectional threaded rod is threadedly engaged with the clamping plate.
[0009] The present invention is further configured such that a second motor is installed on one side of one of the limiting frames, the output end of the second motor is fixedly connected to the bidirectional threaded rod, the adjusting assembly further includes a second adjusting wheel, the first adjusting wheel and the second adjusting wheel are connected by a connecting rod, and the output end of the first motor is fixedly connected to the connecting rod.
[0010] The present invention is further configured such that a plurality of fasteners are threaded on the peripheral side of the tension anchor, and a movable plate is fixedly provided on one side of the tension anchor, and the movable plate is slidably engaged with the support plate.
[0011] The present invention is further configured such that a cylinder seat is slidably disposed on the top of the sliding cavity, the cylinder seat is slidably disposed between the cylinder seat and the arc-shaped plate, a cylinder is installed on the top of the cylinder seat, the output end of the cylinder is fixedly connected to the moving plate, and the cylinder seat is connected to the limiting plate by an elastic reset member.
[0012] The present invention is further configured such that a positioning threaded rod is rotatably provided between the two positioning plates, and a third motor is installed on one side of one of the positioning threaded rods. The output end of the third motor is fixedly connected to the positioning threaded rod, and the positioning threaded rod is threadedly engaged with the push plate.
[0013] The present invention has the following beneficial effects: 1. The present invention uses fasteners to tighten the limiting anchor, and then controls the second motor to rotate to drive the bidirectional threaded rod to rotate. The two clamping plates move towards each other until the two clamping plates are in contact with the limiting anchor. At this time, the limiting anchor is tightly clamped, making the steel strand more stable and improving the accuracy of the steel strand test.
[0014] 2. This utility model controls the first motor to drive the connecting rod to rotate. The first adjusting wheel and the second adjusting wheel revolve around each other, causing the first adjusting wheel to move away from the steel strand, while the second adjusting wheel gradually moves closer to the steel strand 3 until the limiting groove in the second adjusting wheel is in contact with the steel strand. Then, the steel strand is subjected to tensile testing. This process can measure the steel strand at different angles.
[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 steel strand skew tensile testing machine.
[0018] Figure 2 for Figure 1 Another structural diagram from a different angle.
[0019] Figure 3 for Figure 2 A schematic diagram of the structure at point A in the middle.
[0020] Figure 4 for Figure 2 A schematic diagram of the structure at point B.
[0021] Figure 5 This is a schematic diagram of the support plate in this utility model.
[0022] Figure 6 for Figure 5 A structural side view.
[0023] Figure 7 This is a schematic diagram of the fixing component in this utility model.
[0024] Figure 8 for Figure 7 Another structural diagram from a different angle.
[0025] Figure 9 This is a schematic diagram of the adjustment component in this utility model.
[0026] The attached diagram lists the components represented by each number as follows:
[0027] 1-Support plate, 101-Sliding cavity, 102-Arc plate, 103-Positioning plate, 104-Limiting plate, 105-First motor, 106-Support rod, 2-Fixing assembly, 201-Limiting anchor, 202-Clamping plate, 203-Fixing chamber, 204-Limiting frame, 205-Bidirectional threaded rod, 206-Second motor, 3-Steel strand, 4-Adjusting assembly, 401-First adjusting wheel, 402-Second adjusting wheel, 403-Connecting rod, 5-Tension assembly, 501-Tension anchor, 502-Fastener, 503-Moving plate, 504-Cylinder seat, 505-Cylinder, 506-Elastic reset component, 6-Power drive assembly, 601-Push plate, 602-Positioning threaded rod, 603-Third motor. Detailed Implementation
[0028] 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.
[0029] For a specific implementation example, please refer to Implementation Example 1. Figure 1-9 This utility model is a steel strand skew tensile testing machine, including a support plate 1, a fixing component 2, an adjusting component 4, a tensile component 5, and a power drive component 6. The support plate 1 is installed on an external frame. The fixing component 2 is installed on the top of the support plate 1 and includes a limiting anchor 201. The limiting anchor 201 has a first limiting port inside, and a steel strand 3 is installed inside the first limiting port. The adjusting component 4 is installed on the top of the support plate 1 and includes a first adjusting wheel 401 (the first adjusting wheel 401 has a limiting groove corresponding to the steel strand 3 on its circumferential side). The first adjusting wheel 401 is slidably engaged with the support plate 1. The tensile component 5 is installed on the top of the support plate 1 and includes a tensile anchor 501. The tensile anchor 501 has a second limiting port inside, and the second limiting port is connected to the other end of the steel strand 3. The power drive component 6 is installed on the top of the support plate 1 and includes a push plate 601, which is slidably engaged with the support plate 1.
[0030] Specifically, the top of the support plate 1 has a sliding cavity 101, the top of the sliding cavity 101 is fixedly provided with an arc plate 102, the top of the sliding cavity 101 is fixedly provided with two positioning plates 103, the inside of the sliding cavity 101 is fixedly provided with a limit plate 104, the bottom of the support plate 1 is equipped with a first motor 105, and the bottom of the support plate 1 is fixedly provided with several support rods 106.
[0031] Furthermore, the fixing assembly 2 also includes two clamping plates 202, a limiting anchor 201 installed between the two clamping plates 202, a fixing chamber 203 fixedly installed on the top of the support plate 1, the limiting anchor 201 inserted into the fixing chamber 203, a load sensor installed inside the fixing chamber 203, limiting frames 204 fixedly installed on both sides of the fixing chamber 203, a bidirectional threaded rod 205 rotatably installed between the two limiting frames 204, the bidirectional threaded rod 205 is threadedly engaged with the clamping plates 202, a second motor 206 is installed on one side of one of the limiting frames 204, and the output end of the second motor 206 is fixedly connected to the bidirectional threaded rod 205.
[0032] The operation process of this embodiment is as follows: The steel strand 3 is inserted between the first limiting port and the second limiting port, that is, the steel strand 3 is fixed between the limiting anchor 201 and the tension anchor 501. Initially, the steel strand 3 is in a horizontal position, and neither of the two clamping plates 202 is in contact with the limiting anchor 201. The limiting groove on the circumferential side of the first adjusting wheel 401 is in contact with the steel strand 3. Then, the second motor 206 is controlled to rotate, driving the bidirectional threaded rod 205 to rotate. The two clamping plates 202 move closer to each other until they are in contact with the limiting anchor 201. Then, the second motor 206 is turned off, and then the power drive assembly 6 is used. The tensioning assembly 5 is slid along the arc plate 102, causing the steel strand 3 to form a certain angle. Then, the tensioning assembly 5 drives the tensioning anchor 501 to move, causing the steel strand 3 to be stretched until it breaks. During this process, the load sensor detects the prestress of the steel strand 3. After the measurement is completed, the tensioning assembly 5 drives the tensioning anchor 501 to move in the opposite direction until the tensioning assembly 5 returns to its initial position. Then, the power drive assembly 6 is controlled to drive the tensioning assembly 5 to slide in the opposite direction along the arc plate 102, so that the steel strand 3 is returned to a horizontal position. Then, a new steel strand 3 is replaced between the limit anchor 201 and the tensioning anchor 501.
[0033] In a second specific embodiment, based on the first specific embodiment, the adjustment assembly 4 further includes a second adjustment wheel 402 (the second adjustment wheel 402 has a limiting groove on its circumferential side corresponding to the steel strand 3). The first adjustment wheel 401 and the second adjustment wheel 402 are connected by a connecting rod 403. The output end of the first motor 105 is fixedly connected to the connecting rod 403. When it is necessary to measure the steel strand 3 at different angles, the first motor 105 is controlled to drive the connecting rod 403 to rotate. The first adjustment wheel 401 and the second adjustment wheel 402 revolve, causing the first adjustment wheel 401 to move away from the steel strand 3, while the second adjustment wheel 402 gradually moves closer to the steel strand 3 until the limiting groove in the second adjustment wheel 402 fits into the steel strand 3. Then, the tensile test on the steel strand 3 continues.
[0034] Specifically, the tension anchor 501 has several fasteners 502 threaded on its circumferential side. A movable plate 503 is fixedly installed on one side of the tension anchor 501. The movable plate 503 is slidably engaged with the support plate 1. A cylinder seat 504 is slidably installed on the top of the sliding cavity 101. The cylinder seat 504 is slidably engaged with the arc plate 102. A cylinder 505 is installed on the top of the cylinder seat 504. The output end of the cylinder 505 is fixedly connected to the movable plate 503. The cylinder seat 504 is connected to the limiting plate 104 through an elastic reset member 506.
[0035] Furthermore, a positioning threaded rod 602 is rotatably provided between the two positioning plates 103, and a third motor 603 is installed on one side of one of the positioning plates 103. The output end of the third motor 603 is fixedly connected to the positioning threaded rod 602, and the positioning threaded rod 602 is threadedly engaged with the push plate 601.
[0036] The operation process of this embodiment is as follows: In the initial state, the push plate 601 is in contact with the cylinder seat 504. After the steel strand 3 is fixed, the third motor 603 is controlled to drive the positioning threaded rod 602 to rotate. The push plate 601 moves, driving the cylinder seat 504 to move. The cylinder 505 moves, driving the moving plate 503 to move. The tension anchor 501 moves, driving the steel strand 3 to move. After the steel strand 3 reaches the required measurement angle, the third motor 603 is turned off. Then, the cylinder 505 is controlled to drive the moving plate 503 to move towards the cylinder seat 504, and the tension anchor 501 moves. The steel strand 3 is pulled until it breaks. After the steel strand 3 is measured, the cylinder 505 is controlled to move in the opposite direction, which drives the moving plate 503 to move away from the cylinder seat 504. The tension anchor 501 moves in the opposite direction until it returns to the initial position. Then, the third motor 603 is controlled to rotate in the opposite direction, which drives the positioning threaded rod 602 to rotate in the opposite direction. The push plate 601 moves in the opposite direction, which drives the cylinder seat 504 to move in the opposite direction. The cylinder 505 moves in the opposite direction, which drives the moving plate 503 to move in the opposite direction. The tension anchor 501 moves in the opposite direction until it moves to the initial position.
[0037] 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.
[0038] 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 steel strand skew tensile testing machine, characterized in that, include: Support plate (1), which is mounted on an external frame; Fixing component (2), the fixing component (2) is installed on the top of the support plate (1), the fixing component (2) includes a limiting anchor (201), the limiting anchor (201) has a first limiting port inside, and a steel strand (3) is installed inside the first limiting port. Adjustment component (4), the adjustment component (4) is installed on the top of the support plate (1), the adjustment component (4) includes a first adjustment wheel (401), the first adjustment wheel (401) and the support plate (1) are in sliding engagement; Tensioning assembly (5), the tensioning assembly (5) is installed on the top of the support plate (1), the tensioning assembly (5) includes a tensioning anchor (501), the tensioning anchor (501) has a second limiting port inside, the second limiting port is connected to the other end of the steel strand (3); And a power drive assembly (6), which is mounted on the top of the support plate (1), the power drive assembly (6) including a push plate (601), the push plate (601) and the support plate (1) being slidably engaged.
2. The steel strand skew tensile testing machine according to claim 1, characterized in that, The support plate (1) has a sliding cavity (101) at the top, an arc plate (102) is fixedly installed at the top of the sliding cavity (101), two positioning plates (103) are fixedly installed at the top of the sliding cavity (101), and a limit plate (104) is fixedly installed inside the sliding cavity (101). The bottom of the support plate (1) is equipped with a first motor (105), and a number of support rods (106) are fixedly installed at the bottom of the support plate (1).
3. The steel strand skew tensile testing machine according to claim 2, characterized in that, The fixing component (2) also includes two clamping plates (202), the limiting anchor (201) is installed between the two clamping plates (202), and a fixing chamber (203) is fixedly provided on the top of the support plate (1), and the limiting anchor (201) is inserted into the fixing chamber (203).
4. The steel strand skew tensile testing machine according to claim 3, characterized in that, A load sensor is installed inside the fixed chamber (203). Limiting frames (204) are fixedly installed on both sides of the fixed chamber (203). A bidirectional threaded rod (205) is rotatably installed between the two limiting frames (204). The bidirectional threaded rod (205) is threadedly engaged with the clamping plate (202).
5. A steel strand skew tensile testing machine according to claim 4, characterized in that, One of the limiting frames (204) is equipped with a second motor (206) on one side, and the output end of the second motor (206) is fixedly connected to the bidirectional threaded rod (205); The adjustment assembly (4) further includes a second adjustment wheel (402), the first adjustment wheel (401) and the second adjustment wheel (402) are connected by a connecting rod (403), and the output end of the first motor (105) is fixedly connected to the connecting rod (403).
6. The steel strand skew tensile testing machine according to claim 5, characterized in that, The tension anchor (501) has several fasteners (502) threaded on its peripheral side. A movable plate (503) is fixedly installed on one side of the tension anchor (501), and the movable plate (503) slides with the support plate (1).
7. A steel strand skew tensile testing machine according to claim 6, characterized in that, A cylinder seat (504) is slidably disposed on the top of the sliding cavity (101), and the cylinder seat (504) is slidably disposed between the arc plate (102). A cylinder (505) is installed on the top of the cylinder seat (504). The output end of the cylinder (505) is fixedly connected to the moving plate (503), and the cylinder seat (504) is connected to the limiting plate (104) through an elastic reset member (506).
8. A steel strand skew tensile testing machine according to claim 7, characterized in that, A positioning threaded rod (602) is rotatably provided between the two positioning plates (103). A third motor (603) is installed on one side of one of the positioning threaded rods (602). The output end of the third motor (603) is fixedly connected to the positioning threaded rod (602). The positioning threaded rod (602) is threadedly engaged with the push plate (601).