Deformed steel bar sample measuring device

Abstract

The utility model relates to steel bar length measurement, in particular to a deformed steel bar sample measuring device. The diameter deviation range of the deformed steel bar can be conveniently and accurately measured. Comprising a base unit; a clamping unit is arranged on one side of the base unit and used for fixing the end of the deformed steel bar. A measuring device is arranged on the side, away from the clamping unit, of the base unit and used for measuring the length of the deformed steel bar. At least one straightening trolley is arranged on the base unit in a sliding mode and used for straightening deformed steel bars. The straightening trolley comprises a driving mechanism, an adjustable clamping mechanism and a walking mechanism, the driving mechanism is used for driving the straightening trolley to move along the base unit, and the adjustable clamping mechanism is used for clamping and straightening the deformed steel bar.

Description

Technical Field

[0001] This utility model relates to the measurement of rebar length, and more particularly to a device for measuring threaded steel bar samples. Background Technology

[0002] In the production of rebar, the inspection of diameter deviation is a core part of the entire quality control process. This step determines the mechanical properties of the product, ensuring it meets the needs of actual engineering projects and also impacting project safety. Real-time diameter detection allows for rapid feedback of data to the production process, enabling precise adjustments to the roll gap and effectively reducing the scrap rate. Statistics show that every 1% reduction in deviation can save approximately 20 yuan per ton of steel.

[0003] However, most factories still use offline sampling inspection to determine the diameter deviation of rebar. Specifically, the manual inspection process includes three main steps: first, cutting a section of rebar to be inspected; second, accurately measuring the length of the cut rebar; and finally, accurately weighing the sample.

[0004] In this series of operations, accurately measuring the length of the rebar is crucial for determining the diameter deviation. However, in practice, the length of the rebar cut is usually more than 1 meter, and the rebar itself has poor straightness. When using calipers or tape measures to measure the length, the bending deformation of the rebar will cause measurement errors. These errors, after subsequent calculations, will result in a large deviation in the diameter deviation of the bar, making it difficult to truly reflect the actual quality of the product. Summary of the Invention

[0005] This invention addresses the problem of inaccurate length measurement in existing technologies by providing a rebar sample measuring device that can conveniently and accurately measure the diameter deviation range of rebar.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a threaded steel sample measuring device, comprising a base unit; a clamping unit is provided on one side of the base unit for fixing the end of the threaded steel; a measuring device is provided on the base unit on the side away from the clamping unit for measuring the length of the threaded steel.

[0007] At least one straightening trolley is slidably disposed on the base unit for straightening threaded steel bars; the straightening trolley includes a drive mechanism, an adjustable clamping mechanism and a traveling mechanism, the drive mechanism is used to drive the straightening trolley to move along the base unit, and the adjustable clamping mechanism is used to clamp and straighten the threaded steel bars.

[0008] Furthermore, the base unit includes a base plate, on which a guide rail is provided; the straightening trolley and the measuring device are slidably mounted on the guide rail.

[0009] Furthermore, the clamping unit includes a vertical plate fixed on the base plate, a nut plate on the vertical plate, a clamping screw threadedly connected to the nut plate, and a V-shaped jaw on the side of the vertical plate facing the straightening trolley; during operation, the threaded steel bar extends into the V-shaped jaw, and the bottom end of the clamping screw applies force to the threaded steel bar.

[0010] Furthermore, the traveling mechanism of the straightening trolley includes a sliding block slidably disposed on the guide rail.

[0011] Furthermore, the driving mechanism of the straightening trolley includes a U-shaped mounting base installed on the top of the sliding block, a motor mounted on the U-shaped mounting base, the motor shaft of the motor being horizontally arranged, and a gear mounted on the end of the motor shaft; a pad is provided on the base plate, and a rack is mounted on the pad; the gear meshes with the rack to form a gear and rack driving mechanism.

[0012] Furthermore, the adjustable clamping mechanism of the straightening trolley includes a frame mounted on the top of the U-shaped mounting base, with an upper V-shaped wheel and a lower V-shaped wheel rotatably mounted inside the frame. The upper V-shaped wheel can be raised and lowered to adjust the clamping force on the threaded steel.

[0013] Furthermore, the lower V-shaped wheel is rotatably mounted inside the frame via a support shaft. A sliding shaft groove is provided on the inner wall of the frame, and a sliding shaft is slidably mounted in the sliding shaft groove. An upper V-shaped wheel is mounted on the sliding shaft, and the sliding shaft is driven to lift and lower via an adjusting screw. The adjusting screw is threadedly connected to the top of the frame.

[0014] Furthermore, the measuring device includes a slider that is slidably mounted on the guide rail, and a backing plate is mounted on the top of the slider. In use, the end of the threaded steel bar abuts against the backing plate.

[0015] Furthermore, the base plate is provided with a scale along its length, and the side wall of the back plate facing the scale is provided with an indicator head for aligning with the scale for reading.

[0016] Furthermore, the indicator head includes a connecting part fixed to the back plate, and an indicator part connected to the connecting part, which is used for aligning the reading; the zero mark position of the scale corresponds to the reference position when one end of the threaded steel bar is fully inserted into the V-shaped jaws of the clamping unit and the other end abuts against the back plate.

[0017] Compared with the prior art, this utility model has the following advantages.

[0018] This invention enables convenient and accurate measurement of the diameter deviation range of threaded steel bars. The threaded steel bar sample measuring device incorporates multiple motor-driven calibration carriages, each with its own independently controllable sliding position. This allows for straightening of threaded steel bars of different lengths, providing uniform support and straightening along the entire length of the threaded steel bar.

[0019] The straightening trolley of this utility model can be compatible with the straightening of a certain range of threaded steel diameters, and the number of straightening trolleys can be increased or decreased according to the length of the threaded steel. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The scope of protection of the present invention is not limited to the following description.

[0021] Figure 1 A three-dimensional vision device for measuring threaded steel samples Figure 1 .

[0022] Figure 2 A three-dimensional vision device for measuring threaded steel samples Figure 2 .

[0023] Figure 3 A three-dimensional vision device for measuring threaded steel samples Figure 3 .

[0024] Figure 4 This is a three-dimensional view of the clamping unit of a threaded steel sample measuring device.

[0025] Figure 5 This is a top view of a device for measuring threaded steel samples.

[0026] Figure 6 A three-dimensional vision calibration carriage for a rebar sample measuring device. Figure 1 .

[0027] Figure 7 A three-dimensional vision calibration carriage for a rebar sample measuring device. Figure 2 .

[0028] In the diagram, 1. Base unit; 2. Clamping unit; 3. Straightening trolley; 4. Measuring device; 5. Threaded steel bar; 101. Base plate; 102. Guide rail; 103. Pad plate; 104. Rack; 105. Scale; 201. Vertical plate; 202. Nut plate; 203. Clamping screw; 204. V-jaw; 301. U-shaped mounting base; 302. Motor; 303. Gear; 304. Frame; 305. Support shaft; 306. Lower V-wheel; 307. Upper V-wheel; 308. Sliding shaft; 310. Adjusting screw; 311. Sliding shaft groove; 312. C-shaped support; 313. Sliding block; 401. Sliding block; 402. Indicator head; 403. Backing plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and beneficial effects of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0030] like Figure 1-7 As shown, the threaded steel sample measuring device includes a base unit 1; a clamping unit 2 is provided on one side of the base unit 1 for fixing the end of the threaded steel 5; a measuring device 4 is provided on the base unit 1, away from the clamping unit 2, for measuring the length of the threaded steel 5; at least one straightening carriage 3 is slidably arranged on the base unit 1 for straightening the threaded steel 5; the base unit 1 includes a base plate 101, on which a guide rail 102 is provided; the straightening carriage 3 includes a drive mechanism, an adjustable clamping mechanism, and a traveling mechanism, the drive mechanism is used to drive the straightening carriage 3 to move along the base unit 1, and the adjustable clamping mechanism is used to clamp and straighten the threaded steel 5. The straightening carriage 3 and the measuring device 4 are slidably arranged on the guide rail 102.

[0031] Preferably, the clamping unit 2 includes a vertical plate 201 fixed on the base plate 101, a nut plate 202 on the vertical plate 201, a clamping screw 203 threadedly connected to the nut plate 202, and a V-shaped jaw 204 on the side of the vertical plate 201 facing the straightening trolley 3. During operation, the threaded steel bar 5 extends into the V-shaped jaw 204, and the bottom end of the clamping screw 203 applies force to the threaded steel bar 5. The clamping unit 2, with its vertical plate 201, nut plate 202, clamping screw 203, and V-shaped jaw 204, not only firmly clamps the threaded steel bar 5 but also allows adjustment of the clamping force via the clamping screw 203, accommodating threaded steel bars 5 of different diameters, thus enhancing the versatility and operational flexibility of the device.

[0032] Preferably, the traveling mechanism of the straightening trolley 3 includes a sliding block 313 slidably disposed on the guide rail 102. The traveling mechanism, through the cooperation of the sliding block and the guide rail, enables the straightening trolley to move smoothly on the base unit, reducing frictional resistance, improving operating efficiency, and providing a stable foundation for subsequent straightening and measurement work.

[0033] The drive mechanism of the straightening trolley 3 includes a U-shaped mounting base 301 installed on the top of the sliding block 313. A motor 302 is mounted on the U-shaped mounting base 301, with the motor shaft of the motor 302 horizontally positioned and a gear 303 mounted at the end of the motor shaft. A pad 103 is provided on the base plate 101, and a rack 104 is mounted on the pad 103. The gear 303 meshes with the rack 104 to form a gear and rack drive mechanism. By adopting a gear and rack drive mechanism, the precise movement of the straightening trolley is achieved by the motor driving the gear to rotate, ensuring the positioning accuracy and stability during the straightening process, and significantly improving the automation level and work efficiency of threaded steel straightening.

[0034] The adjustable clamping mechanism of the straightening trolley 3 includes a frame 304 mounted on top of the U-shaped mounting base 301. An upper V-shaped wheel 307 and a lower V-shaped wheel 306 are rotatably mounted within the frame 304. The upper V-shaped wheel 307 is vertically adjustable to adjust the clamping force on the threaded steel bar 5. Through the cooperation of the upper and lower V-shaped wheels, combined with the lifting function of the upper V-shaped wheel, the adjustable clamping mechanism can flexibly adjust the clamping force on the threaded steel bar, meeting the needs of different specifications of threaded steel bars while effectively avoiding damage or slippage caused by excessively tight or loose clamping.

[0035] Example 1: There are four straightening carriages 3, which are distributed between the clamping unit 2 and the measuring device 4 for straightening the threaded steel 5. An adjustable shim set is provided between the pad 103 and the base plate 101 for precisely adjusting the installation height of the transmission rack 104.

[0036] Preferably, the lower V-shaped wheel 306 is rotatably mounted within the frame 304 via a support shaft 305. A sliding shaft groove 311 is provided on the inner wall of the frame 304, and a sliding shaft 308 is slidably mounted within the groove. An upper V-shaped wheel 307 is mounted on the sliding shaft 308. The sliding shaft 308 is driven to rise and fall by an adjusting screw 310. The adjusting screw 310 is threadedly connected to the top of the frame 304. The cooperative design of the sliding shaft and the adjusting screw enables precise lifting and lowering control of the upper V-shaped wheel. Simultaneously, the ball joint structure of the C-shaped support further enhances the flexibility and stability of the adjustment, improving clamping accuracy and straightening effect.

[0037] Example 2: The sliding shaft 308 of the straightening trolley 3 is connected to the adjusting screw 310 through the C-shaped support 312. The C-shaped support 312 has a downward-opening C-shaped structure, and the shaft holes symmetrically arranged on its two side walls form a rotatable connection with the two ends of the sliding shaft 308. The top center of the C-shaped support 312 has a connecting part, which is detachably connected to the bottom end of the adjusting screw 310 through a ball joint structure. The middle part of the adjusting screw 310 and the threaded hole at the top of the frame 304 form a helical transmission pair, and the top of the frame 304 is provided with a reinforcing rib to improve the structural strength at the threaded hole.

[0038] Preferably, the measuring device 4 includes a slider 401, which is slidably mounted on the guide rail 102. A backing plate 403 is mounted on the top of the slider 401. In use, the end of the threaded steel 5 abuts against the backing plate 403.

[0039] Example 3: The contact surface between the backing plate 403 and the end of the threaded steel bar 5 is a plane. This ensures close contact between the threaded steel bar 5 and the backing plate 403, increasing the contact area.

[0040] Preferably, a scale 105 is provided on the base plate 101 along its length, and an indicator head 402 is provided on the side wall of the back plate 403 facing the scale 105 for aligning the reading of the scale 105. The indicator head 402 includes a connecting part fixed to the back plate 403 and an indicator part connected to the connecting part, which is used for aligning the reading; the zero mark position of the scale 105 corresponds to the reference position when one end of the threaded steel bar 5 is fully inserted into the V-shaped jaws 204 of the clamping unit 2 and the other end abuts against the back plate 403.

[0041] The usage process of this utility model is described in conjunction with the accompanying drawings and technical solutions:

[0042] 1. When the length of the rebar needs to be measured, first move all the straightening trolleys to the clamping unit side by controlling the motor.

[0043] 2. Then insert the threaded steel bar between the upper and lower V-shaped wheels of the straightening trolley (at this time, operate the adjusting screw to move the upper V-shaped wheel upward a certain distance to facilitate the insertion of the threaded steel bar).

[0044] 3. Then, after pressing one end of the threaded steel bar against the bottom of the V-jaw, operate the clamping screw to press the end of the threaded steel bar against the V-jaw and fix it in place.

[0045] 4. At this time, by controlling the motor of the straightening trolley, the straightening trolley slides out from the clamping unit end to the other end in one go from front to back, so that the straightening trolley can be evenly distributed on the entire length of the threaded steel.

[0046] 5. Then, operate the adjusting screw to make the upper V-shaped wheel move downwards along the sliding groove, achieving the purpose of clamping the threaded steel bar between the upper and lower V-shaped wheels. During the clamping process, the threaded steel bar is naturally straightened.

[0047] 6. Next, move the measuring device along the guide rail to the other end of the threaded steel bar and press it against the backing plate. At this time, take a reading through the indicator head on the measuring device to confirm the length of the threaded steel bar and complete the measurement of the threaded steel bar.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "preferred embodiment," "detailed description," or "preferred embodiment," 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.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Therefore, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope defined by the claims of this utility model.

Claims

1. A threaded steel sample measuring device comprising a base unit (1); characterized in that, The base unit (1) is provided with a clamping unit (2) on one side for fixing the end of the threaded steel (5); the base unit (1) is provided with a measuring device (4) on the side away from the clamping unit (2) for measuring the length of the threaded steel (5); The base unit (1) is provided with at least one straightening trolley (3) slidingly arranged thereon for straightening the threaded steel (5); the straightening trolley (3) comprises a driving mechanism, an adjustable clamping mechanism and a walking mechanism, the driving mechanism is used to drive the straightening trolley (3) to move along the base unit (1), and the adjustable clamping mechanism is used to clamp and straighten the threaded steel (5).

2. The threaded steel sample measuring device according to claim 1, characterized in that, The base unit (1) comprises a bottom plate (101), and the bottom plate (101) is provided with guide rails (102); the straightening trolley (3) and the measuring device (4) are slidingly arranged on the guide rails (102).

3. The threaded steel sample measuring apparatus according to claim 2, characterized by The clamping unit (2) comprises a vertical plate (201) fixed on the bottom plate (101), the vertical plate (201) is provided with a nut plate (202), the nut plate (202) is threadedly connected with a pressing screw (203), and the side of the vertical plate (201) facing the straightening trolley (3) is provided with a V-shaped jaw (204); during operation, the threaded steel (5) extends into the V-shaped jaw (204), and the bottom end of the pressing screw (203) applies force to the threaded steel (5).

4. The threaded steel sample measuring apparatus according to claim 2, characterized by The walking mechanism of the straightening trolley (3) comprises a sliding block (313) slidingly arranged on the guide rail (102).

5. The threaded steel sample measuring apparatus according to claim 4, characterized by The driving mechanism of the straightening trolley (3) comprises a U-shaped mounting seat (301) mounted on the top of the sliding block (313), a motor (302) is mounted on the U-shaped mounting seat (301), the motor shaft of the motor (302) is horizontally arranged, and a gear (303) is mounted on the end of the motor shaft; a backing plate (103) is arranged on the bottom plate (101), and a rack (104) is mounted on the backing plate (103); the gear (303) is engaged with the rack (104) to form a gear and rack driving mechanism.

6. The threaded steel sample measuring apparatus according to claim 5, characterized by The adjustable clamping mechanism of the straightening trolley (3) comprises a frame (304) mounted on the top of the U-shaped mounting seat (301), an upper V-shaped wheel (307) and a lower V-shaped wheel (306) are rotatably mounted in the frame (304), and the upper V-shaped wheel (307) is arranged to be adjustable to adjust the clamping force on the threaded steel (5).

7. The threaded steel sample measuring device according to claim 6, characterized in that The lower V-shaped wheel (306) is rotatably mounted in the frame (304) through a support shaft (305), a sliding shaft groove (311) is formed in the inner wall of the frame (304), a sliding shaft (308) is slidingly installed in the sliding shaft groove (311), the upper V-shaped wheel (307) is mounted on the sliding shaft (308), and the sliding shaft (308) is driven to lift by an adjusting screw (310); the adjusting screw (310) is threadedly connected with the top of the frame (304).

8. The threaded steel sample measuring apparatus according to claim 2, characterized by The measuring device (4) comprises a sliding block (401) slidingly mounted on the guide rail (102), and a backrest (403) is mounted on the top of the sliding block (401); during use, the end of the threaded steel (5) abuts against the backrest (403).

9. The threaded steel sample measuring apparatus according to claim 8, characterized by The bottom plate (101) is provided with a scale (105) along the length direction, and the side wall of the side plate (403) towards the scale (105) is provided with an indicating head (402) for aligning the scale (105) reading.

10. The threaded steel sample measuring apparatus according to claim 9, characterized by The indicating head (402) comprises a connecting part fixed on the side plate (403) and an indicating part connected with the connecting part, and the indicating part is used for aligning the reading; the zero scale position of the scale (105) corresponds to the reference position when the threaded steel (5) is completely inserted into the V-shaped jaw (204) of the clamping unit (2) and the other end abuts against the side plate (403).

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