Steel strand stretching clamp

Abstract

The utility model discloses a steel strand stretching clamp which comprises a tension sensor and a workbench, an auxiliary guiding device and a clamping device are arranged on the workbench, the clamping device comprises a first installation frame, a winding block, a lifting plate, a first oil cylinder and a pressing plate, the two ends of the winding block are both fixedly connected with the first installation frame, and the lifting plate is fixedly connected with the first oil cylinder. The clamping device is arranged, the two ends of the steel strand rope can be spirally wound on the winding block and wound for a plurality of circles, after winding is completed, the steel strand rope is pressed between the pressing plate and the attaching plane through the pressing plate, friction force is increased by increasing the clamping length between the steel strand rope and the pressing plate and the clamping length between the steel strand rope and the attaching plane, and therefore the steel strand rope can be wound more stably. And displacement of the steel strand rope during stretching detection is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stretching clamps, and more specifically, to a steel strand stretching clamp. Background Art

[0002] When the steel strand is produced and put into use, it needs to be tested by tensile testing equipment first. When the existing testing equipment tests the steel strand, one end of the steel strand is generally installed on the fixed seat through a clamp, and the other end is installed on the movable seat through a clamp. A hydraulic cylinder is provided on the equipment body, and a tension sensor is connected between the hydraulic cylinder and the movable seat. When the steel strand is installed, the movable seat can be pulled by the hydraulic cylinder, and the current value is displayed by the tension sensor during the process to perform tensile testing on the steel strand. However, when existing clamps are used to clamp the steel strands, they are generally clamped and fixed from both ends of the steel strands by two clamping blocks. When the tension on the steel strands increases to a certain value, the friction between the clamping blocks and the steel strands is insufficient to fix the steel strands, which may easily cause the steel strands to slip, thereby affecting the detection results. In addition, when some clamps are used to clamp the steel strands, it is easy for the connecting line at the clamping points at both ends of the steel strands to be non-parallel to the extension and retraction direction of the hydraulic cylinder, resulting in inaccurate values ​​of the tension sensor when the hydraulic cylinder stretches the steel strands. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the problems existing in the prior art, the utility model provides a steel strand stretching clamp to solve the technical problems mentioned in the background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel strand stretching clamp, comprising a tension sensor and a workbench, the workbench is provided with an auxiliary guiding device and a clamping device, the clamping device comprises a first mounting frame, a winding block, a lifting plate, a first oil cylinder and a pressing plate, both ends of the winding block are fixedly connected to the first mounting frame, and the top of the winding block is provided with a fitting plane, two first oil cylinders are provided, and are respectively fixedly arranged on both sides of the first mounting frame, the telescopic end of the first oil cylinder passes through the first mounting frame and is fixedly connected to the lower surface of the lifting plate, the pressing plate is fixedly arranged on the lower surface of the lifting plate and is arranged corresponding to the fitting plane, the lower surface of the lifting plate is provided with a first guide rod, the bottom end of the first guide rod passes through the first mounting frame and is slidably connected to the first mounting frame, the upper surface of the workbench is provided with a first movable plate and a second movable plate, a transverse movement mechanism is provided between the first movable plate and the workbench, and one end of the second movable plate is fixedly connected to the tension sensor.

[0007] The utility model is further configured such that a first fixed plate and a second fixed plate are respectively provided at both ends of the workbench, the transverse movement mechanism is connected to the first fixed plate, a detection cylinder is provided on the second fixed plate, and the telescopic end of the detection cylinder passes through the second fixed plate and is connected to the tension sensor.

[0008] The utility model is further configured as follows: the auxiliary guiding device includes a second mounting frame, a fixed seat, a driving motor, a lead screw, a first movable block and a second movable block, the fixed seat is fixedly arranged on the second mounting frame, the first movable block and the second movable block are respectively provided with a first clamping block and a second clamping block, the thread directions of the two ends of the lead screw are opposite, and the two ends of the lead screw are rotatably connected to the fixed seat, the driving motor is arranged on one side of the fixed seat, and the output end of the driving motor is connected to the lead screw, the first movable block and the second movable block are respectively threadedly sleeved on the two ends of the lead screw, and the first movable block and the second movable block are both slidably connected to the fixed seat.

[0009] The utility model is further configured as follows: the transverse movement mechanism includes a second oil cylinder and a second guide rod, the second oil cylinder is fixedly arranged on the first fixed plate, and its telescopic end passes through the first fixed plate and is connected to the first movable plate, one end of the second guide rod is connected to the first movable plate, and the other end passes through the first fixed plate and is slidably connected to the first fixed plate.

[0010] The utility model is further configured that a third guide rod is provided on the second movable plate, and one end of the third guide rod penetrates the second fixed plate and is slidably connected with the second fixed plate.

[0011] The utility model is further configured such that the auxiliary guide device and the clamping device are each provided with two groups, wherein one group of the auxiliary guide device and one group of the clamping device are arranged on the upper surface of the first movable plate, and another group of the auxiliary guide device and another group of the clamping device are arranged on the upper surface of the second movable plate.

[0012] The utility model is further configured that a protective cover is provided on the upper surface of the workbench, and a protective door is hingedly provided on the protective cover.

[0013] The utility model is further configured such that both the first clamping block and the second clamping block are provided with anti-slip pads.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a steel strand stretching clamp, which has the following beneficial effects:

[0016] 1. The utility model is provided with a clamping device, which can spirally wind the two ends of the steel strand on the winding block and wind several turns. After the winding is completed, the steel strand is pressed between the pressing plate and the fitting plane by the pressing plate. The friction force is increased by increasing the clamping length between the steel strand, the pressing plate and the fitting plane to prevent the steel strand from shifting during the tensile test.

[0017] 2. The utility model is provided with an auxiliary guide device, which is convenient for centering and clamping the steel strand, ensuring that the stretching directions of the steel strand and the detection cylinder are parallel, so as to improve the accuracy of the detection.

[0018] 3. The utility model is provided with a protective cover to prevent the steel strand from breaking and splashing onto the staff during the tensile test, thereby preventing the staff from being injured. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a steel strand stretching clamp in the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model without the protective cover;

[0021] Figure 3 It is a structural schematic diagram of the clamping device in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the auxiliary guide device in the utility model;

[0023] Figure 5 It is a schematic structural diagram of the first movable plate, the clamping device and the auxiliary guiding device in the utility model.

[0024] In the figure: 1. tension sensor; 2. workbench; 3. first mounting frame; 4. winding block; 5. lifting plate; 6. first oil cylinder; 7. pressure plate; 8. fitting plane; 9. first guide rod; 10. first movable plate; 11. second movable plate; 12. first fixed plate; 13. second fixed plate; 14. detection cylinder; 15. second mounting frame; 16. fixed seat; 17. driving motor; 18. lead screw; 19. first movable block; 20. second movable block; 21. first clamping block; 22. second clamping block; 23. second oil cylinder; 24. second guide rod; 25. third guide rod; 26. protective cover; 27. protective door; 28. anti-slip mat. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0028] See also Figure 1-5 , a steel strand stretching clamp, comprising a tension sensor 1 and a workbench 2, the workbench 2 is provided with an auxiliary guiding device and a clamping device, the clamping device comprises a first mounting frame 3, a winding block 4, a lifting plate 5, a first oil cylinder 6 and a pressing plate 7, both ends of the winding block 4 are fixedly connected to the first mounting frame 3, and the top of the winding block 4 is provided with a fitting plane 8, two first oil cylinders 6 are provided, and are respectively fixedly arranged on both sides of the first mounting frame 3, the telescopic end of the first oil cylinder 6 passes through the first mounting frame 3 and is fixedly connected to the lower surface of the lifting plate 5, the pressing plate 7 is fixedly arranged on the lower surface of the lifting plate 5, and is arranged corresponding to the fitting plane 8, the lower surface of the lifting plate 5 is provided with a first guide rod 9, the bottom end of the first guide rod 9 passes through the first mounting frame 3 and is slidably connected to the first mounting frame 3, the upper surface of the workbench 2 is provided with a first movable plate 10 and a second movable plate 11, a transverse movement mechanism is provided between the first movable plate 10 and the workbench 2, and one end of the second movable plate 11 is fixedly connected to the tension sensor 1. The auxiliary guide device comprises a second mounting frame 15, a fixed seat 16, a driving motor 17, a lead screw 18, a first moving block 19 and a second moving block 20. The fixed seat 16 is fixedly arranged on the second mounting frame 15. The first moving block 19 and the second moving block 20 are respectively provided with a first clamping block 21 and a second clamping block 22. The two ends of the lead screw 18 have opposite thread directions, and both ends of the lead screw 18 are rotatably connected to the fixed seat 16. The driving motor 17 is arranged on one side of the fixed seat 16, and the output end of the driving motor 17 is connected to the lead screw 18. The first moving block 19 and the second moving block 20 are respectively threadedly sleeved on both ends of the lead screw 18, and the first moving block 19 and the second moving block 20 are both slidably connected to the fixed seat 16. The auxiliary guide device and the clamping device are both provided with two groups, one group of the auxiliary guide device and one group of the clamping device are arranged on the upper surface of the first moving plate 10, and the other group of the auxiliary guide device and the other group of the clamping device are arranged on the upper surface of the second moving plate 11. Anti-slip pads 28 are provided on the first clamping block 21 and the second clamping block 22 .

[0029] In this embodiment, in the initial state, the pressing plate 7 is away from the fitting plane 8, and the first movable plate 10 is close to the second movable plate 11. One end of the steel strand is placed in one of the auxiliary guide devices, and the driving motor 17 is started to drive the lead screw 18 to rotate, and drive the first movable block 19 and the second movable block 20 to approach each other, drive the first clamping block 21 and the second clamping block 22 to approach the steel strand, and clamp and fix the steel strand. Then, the steel strand is wound around the winding block 4, and after several spiral windings, the steel strand is pulled while the first oil cylinder 6 is started to drive the lifting plate 5 and the pressing plate 7 to move downward, and the steel strand is clamped between the pressing plate 7 and the fitting plane 8, completing the clamping and fixation of this end of the steel strand. In the same way, the other end of the steel strand is clamped and fixed on another set of auxiliary guide devices and clamping devices.

[0030] See also Figure 1-5 As an implementation of the transverse mechanism: the first fixed plate 12 and the second fixed plate 13 are respectively provided at both ends of the workbench 2, the transverse mechanism is connected to the first fixed plate 12, the second fixed plate 13 is provided with a detection cylinder 14, the telescopic end of the detection cylinder 14 passes through the second fixed plate 13 and is connected to the tension sensor 1. The transverse mechanism includes a second cylinder 23 and a second guide rod 24, the second cylinder 23 is fixedly arranged on the first fixed plate 12, and its telescopic end passes through the first fixed plate 12 and is connected to the first movable plate 10, one end of the second guide rod 24 is connected to the first movable plate 10, and the other end passes through the first fixed plate 12 and is slidably connected to the first fixed plate 12. A third guide rod 25 is provided on the second movable plate 11, one end of the third guide rod 25 passes through the second fixed plate 13 and is slidably connected to the second fixed plate 13. A protective cover 26 is provided on the upper surface of the workbench 2, and a protective door 27 is hinged on the protective cover 26.

[0031] More specifically, at this time, the protective door 27 is closed and the second oil cylinder 23 is started, so that it drives the first movable plate 10 to move outward, driving the steel rope to be in a straightened but not tensile state. At this time, the second oil cylinder 23 stops, and the steel rope is stretched and tested by detecting the extension and retraction of the oil cylinder 14.

[0032] In summary, when the overall equipment is in use or running: in the initial state, the pressing plate 7 is away from the fitting plane 8, the first movable plate 10 is close to the second movable plate 11, one end of the steel strand is placed in one of the auxiliary guide devices, and the drive motor 17 is started to drive the lead screw 18 to rotate, and drive the first movable block 19 and the second movable block 20 to approach each other, drive the first clamping block 21 and the second clamping block 22 to approach the steel strand, and clamp and fix the steel strand, and then wrap the steel strand around the winding block 4, and after spirally winding several circles, while pulling the steel strand, start the first oil cylinder 6 to drive the lifting plate 5 and the pressing plate 7 to move downward, clamp the steel strand between the pressing plate 7 and the fitting plane 8, and complete the clamping and fixation of this end of the steel strand, and in the same way, clamp and fix the other end of the steel strand on another set of auxiliary guide devices and clamping devices.

[0033] At this time, the protective door 27 is closed and the second oil cylinder 23 is started to drive the first movable plate 10 to move outward, driving the steel strand to be in a straight but tension-free state. At this time, the second oil cylinder 23 stops, and the steel strand is stretched and tested by detecting the extension and retraction of the oil cylinder 14.

[0034] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A steel strand tensile fixture, comprising a tension sensor (1) and a workbench (2), characterized in that: The workbench (2) is provided with an auxiliary guiding device and a clamping device, and the clamping device comprises a first mounting frame (3), a winding block (4), a lifting plate (5), a first oil cylinder (6) and a pressing plate (7). Both ends of the winding block (4) are fixedly connected to the first mounting frame (3), and the top of the winding block (4) is provided with a fitting plane (8). Two first oil cylinders (6) are provided and are respectively fixedly arranged on both sides of the first mounting frame (3). The telescopic end of the first oil cylinder (6) passes through the first mounting frame (3) and is fixedly arranged on the lower surface of the lifting plate (5). The lifting plate (5) is fixedly connected, the pressing plate (7) is fixedly arranged on the lower surface of the lifting plate (5) and is arranged corresponding to the fitting plane (8), the lower surface of the lifting plate (5) is provided with a first guide rod (9), the bottom end of the first guide rod (9) passes through the first mounting frame (3) and is slidably connected to the first mounting frame (3), the upper surface of the workbench (2) is provided with a first movable plate (10) and a second movable plate (11), a transverse movement mechanism is provided between the first movable plate (10) and the workbench (2), and one end of the second movable plate (11) is fixedly connected to the tension sensor (1).

2. The steel strand stretching fixture according to claim 1, characterized in that: A first fixed plate (12) and a second fixed plate (13) are respectively provided at both ends of the workbench (2); the transverse movement mechanism is connected to the first fixed plate (12); a detection cylinder (14) is provided on the second fixed plate (13); the telescopic end of the detection cylinder (14) passes through the second fixed plate (13) and is connected to the tension sensor (1).

3. The steel strand stretching fixture according to claim 2, characterized in that: The auxiliary guide device comprises a second mounting frame (15), a fixed seat (16), a driving motor (17), a lead screw (18), a first moving block (19) and a second moving block (20); the fixed seat (16) is fixedly arranged on the second mounting frame (15); the first moving block (19) and the second moving block (20) are respectively provided with a first clamping block (21) and a second clamping block (22); the two ends of the lead screw (18) have opposite thread directions, and both ends of the lead screw (18) are rotatably connected to the fixed seat (16); the driving motor (17) is arranged on one side of the fixed seat (16), and the output end of the driving motor (17) is connected to the lead screw (18); the first moving block (19) and the second moving block (20) are respectively threadedly sleeved on the two ends of the lead screw (18), and the first moving block (19) and the second moving block (20) are both slidably connected to the fixed seat (16).

4. The steel strand stretching fixture according to claim 3 is characterized in that: The transverse movement mechanism comprises a second oil cylinder (23) and a second guide rod (24); the second oil cylinder (23) is fixedly arranged on the first fixed plate (12), and its telescopic end passes through the first fixed plate (12) and is connected to the first movable plate (10); one end of the second guide rod (24) is connected to the first movable plate (10), and the other end passes through the first fixed plate (12) and is slidably connected to the first fixed plate (12).

5. The steel strand stretching fixture according to claim 2, characterized in that: The second movable plate (11) is provided with a third guide rod (25), one end of which passes through the second fixed plate (13) and is slidably connected to the second fixed plate (13).

6. The steel strand stretching fixture according to claim 4, characterized in that: The auxiliary guide devices and the clamping devices are each provided in two groups, one group of the auxiliary guide devices and one group of the clamping devices are provided on the upper surface of the first movable plate (10), and the other group of the auxiliary guide devices and the other group of the clamping devices are provided on the upper surface of the second movable plate (11).

7. The steel strand stretching fixture according to claim 1, characterized in that: A protective cover (26) is provided on the upper surface of the workbench (2), and a protective door (27) is hingedly provided on the protective cover (26).

8. The steel strand stretching fixture according to claim 3 is characterized in that: Anti-slip pads (28) are provided on both the first clamping block (21) and the second clamping block (22).

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