Prestressed steel strand testing device

Abstract

The utility model relates to the technical field of steel strand detection, and discloses a prestressed steel strand testing device which comprises an operation table, a detection machine is fixedly connected to the outer wall of the rear side of the operation table, an adjusting mechanism is arranged on the operation table, an auxiliary mechanism is arranged on the adjusting mechanism, and the adjusting mechanism comprises a movable frame. The movable frame is slidably connected to the outer wall of one side of the operation table, worms are rotatably connected to the inner walls of the two sides of the movable frame through bearings, spur gears are fixedly connected to the ends, away from the movable frame, of the worms, worm wheels are connected to the worms in an engaged mode, and threaded rods are fixedly connected to the inner rings of the worm wheels. According to the utility model, the movable frame, the spur gear and other structures are arranged, so that the problems that the clamping pieces can be opened only by beating the clamping pieces to be opened towards two sides during disassembly, the operation is relatively tedious, time-consuming and labor-consuming, the manual operation amount is increased, and the subsequent stress test time of the steel stranded wire is delayed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel strand detection, in particular to a prestressed steel strand testing device. Background Art

[0002] The tensile test of steel strands usually uses two sets of wedge-shaped clamps to fix the two ends of the steel strand respectively. Then, the two sets of wedge-shaped clamps are separated by force. At the same time, the pulling force applied to the wedge-shaped clamps is measured to determine the tensile strength of the steel strand. However, in the process of fixing the steel strand, in order to reduce the impact on the test results, the length of the steel strand clamped by the two wedge-shaped clamps needs to be the same to ensure that the steel strand is evenly stressed during the test and to achieve the purpose of the same clamping length of the steel strand.

[0003] After searching, Chinese patent announcement number: CN220542648U discloses a prestressed steel strand tension test device, which belongs to the technical field of prestressed steel strand detection equipment, including a tensile machine, a guide column and a guide sleeve are fixedly connected to the tensile machine, a slide seat is slidably installed on the outside of the guide column, and a spring is symmetrically fixedly connected to the side of the slide seat, and a clip is slidably embedded in the inside of the guide sleeve, and the upper end of the clip is fixedly connected to the lower end of the spring, and the upper end of the clip is in active contact with the slide seat. The guide sleeve acts inward on the clip, so that the clip acts inward on the prestressed steel strand, so that the clip virtually clamps the prestressed steel strand, and then the prestressed steel strand is tightened by the tensile machine.

[0004] The above device has the following defects: when disassembling, it is necessary to knock the clip to open it to both sides, which is cumbersome, time-consuming and labor-intensive, increases the amount of manual operation, and delays the subsequent stress test time of the steel strand. At the same time, the steel strand can only be tightened in one direction for prestressing test, which affects the efficiency of the prestressing test. Therefore, a prestressed steel strand testing device is proposed to solve the above problems. Utility Model Content

[0005] In order to remedy the above deficiencies, the utility model provides a prestressed steel strand testing device, which aims to improve the problem in the prior art that the clamps need to be knocked open to both sides during disassembly, which is cumbersome, time-consuming and labor-intensive to operate and increases the amount of manual operation.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a prestressed steel strand testing device, comprising an operating table, a detection machine is fixedly connected to the rear outer wall of the operating table, an adjustment mechanism is arranged on the operating table, an auxiliary mechanism is arranged on the adjustment mechanism, the adjustment mechanism comprises a movable frame, the movable frame is slidably connected to the outer wall of one side of the operating table, the inner walls on both sides of the movable frame are rotatably connected to a worm through bearings, a spur gear is fixedly connected to the end of the worm away from the movable frame, a worm wheel is meshingly connected to the worm, a threaded rod is fixedly connected to the inner ring of the worm wheel, a splint is threadedly connected to the threaded rod, and a toothed plate is fixedly connected to the outer wall of one side of the operating table.

[0007] As a further description of the above technical solution: the auxiliary mechanism includes a slide groove, which is opened on the inner wall of one side of the detection machine, and the inner walls on both sides of the slide groove are slidably connected with sliding blocks, and the outer wall of one side of the sliding block is hinged with a movable rod, and a limited position channel is opened on the inner wall of one side of the operating table.

[0008] As a further description of the above technical solution: a handle is fixedly connected to the outer wall of the spur gear on one side away from the worm, and an anti-slip pad is fixedly connected to the side outer wall of the handle.

[0009] As a further description of the above technical solution: one end of the threaded rod is rotatably connected to an inner wall of one side of the movable frame through a bearing, and the clamping plate is slidably connected to the inner walls of both sides of the movable frame.

[0010] As a further description of the above technical solution: a grinding pad is fixedly connected to an outer wall of one side of the clamping plate, and the spur gear and the tooth plate are meshed with each other.

[0011] As a further description of the above technical solution: the sliding block is fixedly connected to the output end of the hydraulic cylinder, and the side outer wall of the sliding block is fixedly connected with a wear-resistant pad.

[0012] As a further description of the above technical solution: there are two movable rods, the two movable rods are symmetrical, one end of the movable rod away from the sliding block is hinged to the inner wall of one side of the movable frame, and the movable rod is slidably connected to the inner wall of one side of the limiting path.

[0013] As a further description of the above technical solution: a support base is fixedly connected to the bottom outer wall of the operating table, and a hydraulic cylinder is fixedly connected to the outer wall of one side of the detection machine.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, by arranging structures such as a movable frame, a spur gear, and a handle, the steel strands can be conveniently opened, closed, and separated, which improves the problem that the clips need to be knocked to open them on both sides during disassembly. The operation is cumbersome, time-consuming, and labor-intensive, which increases the amount of manual operation and delays the subsequent stress test time of the steel strands. At the same time, long-term knocking can easily cause wear and damage to the surface of the accessories.

[0016] 2. In the utility model, by setting up structures such as sliding blocks, movable rods, and limit rails, the two movable frames are simultaneously expanded and closed outwards to cooperate with the stress test of the steel strands, thereby improving the problem that the steel strands can only be tensioned in one direction and the prestress test efficiency is affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall front view of a prestressed steel strand testing device proposed by the utility model;

[0018] Figure 2 It is an overall side view schematic diagram of a prestressed steel strand testing device proposed by the utility model;

[0019] Figure 3 A schematic diagram of an adjustment mechanism of a prestressed steel strand testing device proposed by the utility model;

[0020] Figure 4 The utility model provides a schematic diagram of an auxiliary mechanism of a prestressed steel strand testing device.

[0021] Legend:

[0022] 1. Operating table; 2. Testing machine; 31. Support seat; 32. Hydraulic cylinder; 4. Adjusting mechanism; 41. Movable frame; 42. Worm; 43. Spur gear; 44. Handle; 45. Worm wheel; 46. Threaded rod; 47. Clamp; 48. Sanding pad; 49. Tooth plate; 5. Auxiliary mechanism; 51. Slide; 52. Sliding block; 53. Movable rod; 54. Limiting track. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 3The utility model provides an embodiment: a prestressed steel strand test device, including an operating table 1, a detection machine 2 is fixedly connected to the rear outer wall of the operating table 1, an adjustment mechanism 4 is arranged on the operating table 1, an auxiliary mechanism 5 is arranged on the adjustment mechanism 4, the adjustment mechanism 4 includes a movable frame 41, the movable frame 41 is slidably connected to the outer wall of one side of the operating table 1, and the inner walls on both sides of the movable frame 41 are rotatably connected to the worm 42 through the bearing, and the worm 42 and the worm wheel 45 are arranged to cooperate with each other, so that the clamping plate 47 and the movable frame 41 is used to clamp and fix the steel strands, one end of the worm 42 away from the movable frame 41 is fixedly connected to a spur gear 43, a worm wheel 45 is meshingly connected to the worm 42, and a threaded rod 46 is fixedly connected to the inner ring of the worm wheel 45. By setting two threads on the two threaded rods 46 with opposite directions, a clamping plate 47 is threadedly connected to the threaded rods 46, and a toothed plate 49 is fixedly connected to the outer wall of one side of the operating table 1. By setting the toothed plate 49 to drive the two spur gears 43 to rotate a certain angle, the steel strands inside the clamping plate 47 are loosened.

[0025] Reference Figure 2-Figure 3 The outer wall of the spur gear 43 on one side away from the worm 42 is fixedly connected with a handle 44, and the outer wall of the side of the handle 44 is fixedly connected with an anti-slip pad. One end of the threaded rod 46 is rotatably connected to the inner wall of one side of the movable frame 41 through a bearing, and the clamping plate 47 is slidably connected to the inner walls on both sides of the movable frame 41. The outer wall of one side of the clamping plate 47 is fixedly connected with a frosted pad 48. The frosted pad 48 is provided to increase the friction between the clamping plate 47 and the bracket of the movable frame 41, thereby reducing the looseness when the steel strand is clamped. The spur gear 43 and the tooth plate 49 are meshed with each other, and the bottom outer wall of the operating table 1 is fixedly connected with a support seat 31, and the outer wall of one side of the detection machine 2 is fixedly connected with a hydraulic cylinder 32. The hydraulic cylinder 32 is provided to drive the sliding block 52 to move and adjust.

[0026] Reference Figure 3-Figure 4 The auxiliary mechanism 5 includes a slide groove 51, which is provided on an inner wall of one side of the detection machine 2. The inner walls on both sides of the slide groove 51 are slidably connected with sliding blocks 52. The outer wall of one side of the sliding block 52 is hinged with a movable rod 53. By setting the movable rod 53, the two movable frames 41 are simultaneously driven to expand outward and approach each other. A limited position path 54 is provided on the inner wall of one side of the operating table 1. The sliding block 52 is fixedly connected to the output end of the hydraulic cylinder 32. The outer wall of the side of the sliding block 52 is fixedly connected with a wear-resistant pad. There are two movable rods 53, which are symmetrical respectively. One end of the movable rod 53 away from the sliding block 52 is hinged to the inner wall of one side of the movable frame 41. The movable rod 53 is slidably connected to the inner wall of one side of the limiting path 54. The limiting path 54 is provided to enable the movable rod 53 to move smoothly.

[0027] Working principle: by rotating the handle 44, the worm 42 is driven to rotate, the worm 42 is driven to rotate the worm wheel 45, the worm wheel 45 is driven to rotate the threaded rod 46, the threaded rod 46 is driven to move the clamping plate 47, the clamping plate 47 moves to clamp and fix the steel strand, and then the hydraulic cylinder 32 is turned on to drive the sliding block 52 to move, the sliding block 52 moves to drive the movable rod 53 to move, the movable rod 53 moves to drive the two movable frames 41 to open outward, and perform prestressed test on the steel strand. When it needs to be removed and replaced, the hydraulic cylinder 32 is directly used to retract the sliding block 52, the sliding block 52 moves to drive the movable rod 53 to move, the movable rod 53 moves to drive the two movable frames 41 to move inward, and then the spur gear 43 contacts the tooth plate 49, so that the spur gear 43 rotates and drives the worm 42 to rotate, the worm 42 rotates to drive the worm wheel 45 to rotate, the worm wheel 45 rotates to drive the threaded rod 46 to rotate, and the threaded rod 46 rotates to release the clamping plate 47 to release the steel strand.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prestressed steel strand testing device, comprising an operating table (1), characterized in that: The rear outer wall of the operating table (1) is fixedly connected to a detection machine (2); an adjustment mechanism (4) is provided on the operating table (1); an auxiliary mechanism (5) is provided on the adjustment mechanism (4); the adjustment mechanism (4) comprises a movable frame (41); the movable frame (41) is slidably connected to an outer wall of one side of the operating table (1); inner walls on both sides of the movable frame (41) are rotatably connected to a worm (42) via bearings; an end of the worm (42) away from the movable frame (41) is fixedly connected to a spur gear (43); a worm wheel (45) is meshingly connected to the worm wheel (45); a threaded rod (46) is fixedly connected to the inner ring of the worm wheel (45); a clamping plate (47) is threadedly connected to the threaded rod (46); and a toothed plate (49) is fixedly connected to an outer wall of one side of the operating table (1).

2. A prestressed steel strand testing device according to claim 1, characterized in that: The auxiliary mechanism (5) comprises a slide groove (51), the slide groove (51) is provided on an inner wall of one side of the detection machine (2), the inner walls on both sides of the slide groove (51) are slidably connected to sliding blocks (52), an outer wall on one side of the sliding block (52) is hinged to a movable rod (53), and a limited position path (54) is provided on the inner wall on one side of the operating table (1).

3. A prestressed steel strand testing device according to claim 1, characterized in that: A handle (44) is fixedly connected to an outer wall of a side of the spur gear (43) away from the worm (42), and an anti-slip pad is fixedly connected to an outer wall of a side of the handle (44).

4. A prestressed steel strand testing device according to claim 1, characterized in that: One end of the threaded rod (46) is rotatably connected to an inner wall of one side of the movable frame (41) via a bearing, and the clamping plate (47) is slidably connected to the inner walls of both sides of the movable frame (41).

5. The prestressed steel strand testing device according to claim 1, characterized in that: A grinding pad (48) is fixedly connected to an outer wall of one side of the clamping plate (47), and the spur gear (43) and the toothed plate (49) are meshed with each other.

6. A prestressed steel strand testing device according to claim 2, characterized in that: The sliding block (52) is fixedly connected to the output end of the hydraulic cylinder (32), and a wear-resistant pad is fixedly connected to the side outer wall of the sliding block (52).

7. A prestressed steel strand testing device according to claim 2, characterized in that: There are two movable rods (53) in total. The two movable rods (53) are symmetrical to each other. One end of the movable rod (53) away from the sliding block (52) is hinged to an inner wall of one side of the movable frame (41). The movable rod (53) is slidably connected to an inner wall of one side of the limiting path (54).

8. The prestressed steel strand testing device according to claim 1, characterized in that: A support seat (31) is fixedly connected to the bottom outer wall of the operating table (1), and a hydraulic cylinder (32) is fixedly connected to one side outer wall of the detection machine (2).

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