Prestressed steel bar hardness detection device

Abstract

The utility model discloses a hardness detection device for a prestressed steel bar. The hardness detection device comprises a hardness detector, a limiting clamping mechanism and a lifting adjusting mechanism, the hardness detector is composed of a test bench, a lifting platform and a hardness meter, the lifting platform is fixedly installed in the test bench, and the hardness meter is fixedly installed above the lifting platform. And the limiting clamping mechanism is fixedly installed above the lifting table and comprises an adjusting plate, the adjusting plate is fixedly installed above the lifting table, and a matching plate is rotationally installed above the adjusting plate. Through the arrangement of the limiting clamping mechanism and the lifting adjusting mechanism, the device can stably clamp the prestressed steel bar on a hardness detection instrument, so that the hardness detection error of the prestressed steel bar is reduced, and the detected data can more accurately reflect the mechanical property and the use performance of the prestressed steel bar; and meanwhile, the prestressed steel bars with different diameters and lengths can be limited and clamped, so that the application range is enlarged.

Description

Technical Field

[0001] The utility model belongs to the technical field of prestressed steel bar hardness detection, and in particular relates to a prestressed steel bar hardness detection device. Background Art

[0002] Prestressed steel rod is a kind of prestressed steel with high technical content. It has the characteristics of high strength toughness, low relaxation, strong bond with concrete and material saving. It has been widely used in high-strength prestressed concrete centrifugal pipe piles, electric poles, railway sleepers and other prestressed components at home and abroad, and has a very broad market internationally, especially in Asia.

[0003] During the production process of prestressed steel bars, the hardness of the prestressed steel bars needs to be tested by hardness testing instruments. The hardness testing instruments mainly include test benches, lifting platforms and hardness testers. The prestressed steel bars are placed on the lifting platform, and the lifting platform is raised together with the prestressed steel bars to the hardness tester. Then, the hardness of the prestressed steel bars is tested by the hardness tester, and finally the readings are processed on the display screen. However, when the prestressed steel bars are placed on the lifting platform, it is difficult for the lifting platform to limit and clamp the prestressed steel bars, and the prestressed steel bars need to be manually positioned by staff, which poses a high safety hazard.

[0004] Most common hardness testing instruments do not have the function of limiting the clamping of prestressed steel bars, and cannot stably clamp the prestressed steel bars on the hardness testing instruments, which results in the need for manual positioning by staff when performing hardness testing on the prestressed steel bars. This causes errors in the hardness testing of the prestressed steel bars, and the test data is difficult to truly reflect the mechanical properties and performance of the prestressed steel bars. At the same time, manual positioning also has a high safety hazard, and the prestressed steel bars are prone to deviation.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a prestressed steel bar hardness detection device, which can limit and clamp the prestressed steel bar, thereby improving the accuracy of the hardness detection instrument in detecting the prestressed steel bar.

[0007] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0008] A prestressed steel bar hardness detection device comprises: a hardness detector, a limit clamping mechanism, and a lifting and lowering adjustment mechanism.

[0009] The hardness tester consists of a test bench, a lifting platform and a hardness tester. The lifting platform is fixedly installed inside the test bench, and the hardness tester is fixedly installed above the lifting platform.

[0010] The limit clamping mechanism is fixedly installed above the lifting platform, and the limit clamping mechanism includes an adjusting plate, which is fixedly installed above the lifting platform, a matching plate is rotatably installed above the adjusting plate, a fixed plate is fixedly installed at one end of the matching plate away from the adjusting plate, a plurality of groups of evenly distributed connecting rods are slidably installed between the fixed plate and the matching plate, one end of the connecting rod away from the fixed plate is hinged above the adjusting plate, and one end of the connecting rod close to the fixed plate is hinged with a tightening block.

[0011] The lifting and adjusting mechanism is fixedly installed below the adjusting plate, and the lifting and adjusting mechanism includes a receiving plate, and the receiving plate is fixedly installed above the lifting platform. A plurality of groups of evenly distributed lifting screws are rotatably installed on one side of the receiving plate close to the adjusting plate, and the plurality of groups of lifting screws are all arranged through the adjusting plate, and the lifting screws are threadedly connected to the adjusting plate.

[0012] In one or more embodiments of the utility model, an adjustment groove is formed above the adjustment plate. The adjustment groove is provided to facilitate the sliding of the mating plate in the adjustment groove, thereby limiting the movement trajectory of the mating plate above the adjustment plate. A plurality of evenly distributed limit grooves are formed at the bottom of the adjustment groove. By forming a plurality of evenly distributed limit grooves in the adjustment groove, the position movement of the mating plate can be limited by the limit grooves.

[0013] In one or more embodiments of the utility model, a mating bolt is threadedly mounted on one side of the mating plate, the mating bolt is arranged through the mating plate, and one end of the mating bolt located in the adjustment groove is threadedly mated with the limit groove. By inserting the mating bolt through the mating plate, it is convenient to limit the rotation and movement of the mating plate above the adjustment plate through the mating bolt, and by adjusting the mating bolt to move in the adjustment groove, the movement path of the mating plate on the adjustment plate is limited.

[0014] In one or more embodiments of the utility model, multiple groups of evenly distributed moving sleeves are hinged between the matching plate and the fixed plate, and the multiple groups of moving sleeves are all slidably sleeved on the outside of the connecting rod. By hingedly connecting the multiple groups of moving sleeves between the matching plate and the fixed plate, it is convenient to slide the multiple groups of connecting rods into the moving sleeves, so that the multiple groups of moving sleeves restrict the sliding movement of the connecting rods between the matching plate and the fixed plate.

[0015] In one or more embodiments of the utility model, multiple groups of evenly distributed connecting plates are fixedly installed between the matching plate and the fixed plate, and the multiple groups of connecting plates are staggered with the movable sleeves. The arrangement of multiple groups of connecting plates facilitates the fixed connection of the matching plate and the fixed plate, so that multiple groups of connecting rods can be adjusted and moved between the matching plate and the fixed plate.

[0016] In one or more embodiments of the utility model, a bridge wheel is rotatably mounted on one side of the receiving plate close to the adjusting plate. By rotatably mounting the bridge wheel on the side of the receiving plate, the bridge wheel is conveniently rotated on the side of the receiving plate. Multiple groups of fixed gears are meshed on the outer side of the bridge wheel, and the multiple groups of fixed gears are fixedly sleeved on the outer side of the lifting screw. By meshing multiple groups of fixed gears on the outer side of the bridge wheel, the multiple groups of fixed gears are conveniently rotated through the meshing transmission of the bridge wheel.

[0017] In one or more embodiments of the utility model, the outer side of the bridge wheel is meshed with a driving gear. By meshing the driving gear on the outer side of the bridge wheel, it is convenient to adjust the driving gear to rotate, so that the driving gear meshes and drives the bridge wheel to rotate, thereby making the bridge wheel drive multiple groups of fixed gears to rotate.

[0018] In one or more embodiments of the utility model, a connecting rod is fixedly mounted inside the driving gear, and the connecting rod is rotatably mounted on one side of the receiving plate. The setting of the connecting rod facilitates the driving gear to be rotatably mounted on the side of the receiving plate through the connecting rod, so that by adjusting the rotation of the connecting rod, the connecting rod adjusts the rotation of the driving gear, so that the driving gear externally meshes with the bridge wheel and rotates on the side of the receiving plate.

[0019] In one or more embodiments of the utility model, a handle is fixedly mounted on one end of the connecting rod away from the driving gear. By fixing the handle on the side of the connecting rod, it is convenient to adjust the rotation of the connecting rod through the handle, so that the connecting rod adjusts the rotation of the driving gear, thereby causing the driving gear to mesh with the transmission bridge wheel to rotate.

[0020] In one or more embodiments of the utility model, the top ends of the plurality of lifting screws are fixedly mounted with limit plates, and the limit plates are arranged in cooperation with the adjustment plate. The plurality of limit plates are arranged so as to limit the movement path of the adjustment plate outside the lifting screws.

[0021] Compared with the prior art, the utility model can enable the device to stably clamp the prestressed steel rod on the hardness testing instrument through the setting of the limit clamping mechanism and the lifting and lowering adjustment mechanism, thereby reducing the error of the hardness detection of the prestressed steel rod, and making the detection data more accurately reflect the mechanical properties and performance of the prestressed steel rod. At the same time, prestressed steel rods of different diameters and lengths can be limit clamped, thereby increasing the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional diagram of a prestressed steel bar hardness detection device in one embodiment of the utility model;

[0024] Figure 2 It is a three-dimensional diagram of a position limiting clamping mechanism and a lifting and lowering adjustment mechanism in one embodiment of the utility model;

[0025] Figure 3 It is a top view of the position limiting clamping mechanism and the lifting and lowering adjustment mechanism of an embodiment of the utility model;

[0026] Figure 4 It is a cross-sectional stereoscopic view of a position limiting clamping mechanism in one embodiment of the utility model;

[0027] Figure 5 It is a three-dimensional diagram of the lifting and lowering adjustment mechanism in one embodiment of the utility model.

[0028] Description of main reference numerals:

[0029] 1-hardness tester, 101-test bench, 102-lifting platform, 103-hardness tester, 2-limit clamping mechanism, 201-adjusting plate, 202-matching plate, 203-fixed plate, 204-connecting rod, 205-tightening block, 206-adjusting groove, 207-limiting groove, 208-matching bolt, 209-moving sleeve, 210-connecting plate, 3-lifting adjustment mechanism, 301-supporting plate, 302-lifting screw, 303-bridge wheel, 304-fixed gear, 305-driving gear, 306-connecting rod, 307-handle, 308-limiting plate. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] like Figures 1 to 5As shown, a prestressed steel bar hardness detection device in one embodiment of the utility model includes: a hardness detector 1, a limit clamping mechanism 2, and a lifting and lowering adjustment mechanism 3.

[0032] like Figure 1 As shown, the hardness tester 1 is composed of a test bench 101, a lifting platform 102 and a hardness tester 103. Through the setting of the test bench 101, it is convenient to fix the lifting platform 102 and the hardness tester 103 through the test bench 101, so that the test bench 101 cooperates with the lifting platform 102 and the hardness tester 103 to test the hardness of the prestressed steel bar.

[0033] like Figure 1 As shown, the lifting platform 102 is fixedly installed in the test bench 101, and the hardness tester 103 is fixedly installed above the lifting platform 102. Through the setting of the lifting platform 102, it is convenient to lift and lower the prestressed steel rod through the lifting platform 102, so that the prestressed steel rod contacts the hardness tester 103, and the hardness tester 103 detects the hardness of the prestressed steel rod, thereby increasing the accuracy of the detection.

[0034] like Figure 2 As shown, the position limiting clamping mechanism 2 is fixedly installed above the lifting platform 102, and the position limiting clamping mechanism 2 includes an adjusting plate 201, and the adjusting plate 201 is fixedly installed above the lifting platform 102. Through the setting of the adjusting plate 201, the adjusting plate 201 is fixedly installed above the lifting platform 102, so that the prestressed steel rod can be limited by the adjusting plate 201, so that the prestressed steel rod can be matched with the hardness tester 103, so that the detection value of the hardness of the prestressed steel rod is more accurate.

[0035] like Figure 3 As shown, a matching plate 202 is rotatably mounted above the adjustment plate 201. By setting the matching plate 202, the matching plate 202 is rotated and moved above the adjustment plate 201, so that the adjustment plate 201 positions and clamps prestressed steel bars of different diameters, thereby increasing the application range of the device.

[0036] like Figure 2 As shown, a fixing plate 203 is fixedly installed at one end of the matching plate 202 away from the adjusting plate 201. By fixing the fixing plate 203 above the matching plate 202, it is convenient to limit and clamp the prestressed steel bars of different diameters by the fixing plate 203 and the matching plate 202. At the same time, there is a certain distance between the matching plate 202 and the fixing plate 203, so that the center of gravity of the prestressed steel bar is placed between the matching plate 202 and the fixing plate 203, so that the prestressed steel bar is more firmly limited in the matching plate 202.

[0037] like Figure 4As shown, multiple groups of evenly distributed connecting plates 210 are fixedly installed between the matching plate 202 and the fixed plate 203, and the multiple groups of connecting plates 210 are staggered with the movable sleeve 209. Through the arrangement of multiple groups of connecting plates 210, it is convenient to fix the matching plate 202 and the fixed plate 203, so that the multiple groups of connecting rods 204 can be adjusted and moved between the matching plate 202 and the fixed plate 203.

[0038] like Figures 1 to 4 As shown, multiple groups of evenly distributed connecting rods 204 are slidably installed between the fixed plate 203 and the matching plate 202. The multiple groups of connecting rods 204 are arranged to facilitate the centering, clamping and limiting of the prestressed steel rods through the multiple groups of connecting rods 204, so that the prestressed steel rods can be stably fixed in the matching plate 202.

[0039] like Figure 4 As shown, multiple groups of evenly distributed moving sleeves 209 are hinged between the matching plate 202 and the fixed plate 203, and the multiple groups of moving sleeves 209 are all slidably sleeved on the outside of the connecting rod 204. By hingedly connecting the multiple groups of moving sleeves 209 between the matching plate 202 and the fixed plate 203, it is convenient to slide the multiple groups of connecting rods 204 into the moving sleeves 209, so that the multiple groups of moving sleeves 209 limit the moving path of the connecting rod 204 between the matching plate 202 and the fixed plate 203, so that the device is convenient for centering and clamping prestressed steel bars of different diameters.

[0040] like Figure 4 As shown, one end of the connecting rod 204 away from the fixed plate 203 is hinged above the adjusting plate 201. By hingedly connecting one end of the connecting rod 204 above the adjusting plate 201, when the matching plate 202 is rotated, the connecting rod 204 is hinged and rotated above the adjusting plate 201, and slides and moves in the movable sleeve 209, so that it is convenient to adjust the rotation and movement of the connecting rod 204 by rotating the matching plate 202, so that multiple groups of connecting rods 204 move in the matching plate 202 and the fixed plate 203, so that the prestressed steel bars of different diameters can be conveniently clamped by the device.

[0041] like Figures 2 to 4 As shown, a clamping block 205 is hingedly connected to one end of the connecting rod 204 near the fixed plate 203. By hingedly connecting the clamping block 205 to one end of the connecting rod 204 near the fixed plate 203, it is convenient to clamp and limit the prestressed steel bars of different diameters through the clamping block 205, so that the device can limit and support the prestressed steel bars of different diameters.

[0042] like Figures 1 to 5 As shown, an adjusting groove 206 is cut on the upper side of the adjusting plate 201. The adjusting groove 206 is provided to facilitate the sliding of the matching plate 202 in the adjusting groove 206, thereby limiting the movement track of the matching plate 202 above the adjusting plate 201.

[0043] like Figure 3 As shown, a plurality of evenly distributed limiting grooves 207 are formed at the bottom of the adjusting groove 206. By forming a plurality of evenly distributed limiting grooves 207 in the adjusting groove 206, the position movement of the matching plate 202 can be limited by the limiting grooves 207.

[0044] like Figures 2 to 4 As shown, a matching bolt 208 is threadedly assembled on one side of the matching plate 202, and the matching bolt 208 is arranged through the matching plate 202, and one end of the matching bolt 208 located in the adjustment groove 206 is threadedly matched with the limiting groove 207. By setting the matching bolt 208 through the matching plate 202, it is convenient to limit the rotation and movement of the matching plate 202 above the adjustment plate 201 through the matching bolt 208, so that when the matching plate 202 is rotated above the adjustment plate 201, it is necessary to separate the matching bolt 208 from the limiting groove 207, so that the matching bolt 208 moves in the adjustment groove 206, so that the movement path of the matching plate 202 on the adjustment plate 201 is limited by the setting of the matching bolt 208, so that the movement of the matching plate 202 on the adjustment plate 201 is more stable.

[0045] like Figure 5 As shown, the lifting and lowering adjustment mechanism 3 is fixedly installed below the adjustment plate 201, and the lifting and lowering adjustment mechanism 3 includes a receiving plate 301, and the receiving plate 301 is fixedly installed above the lifting platform 102. By fixing the receiving plate 301 below the adjustment plate 201, it is convenient to support and limit the prestressed steel rod through the receiving plate 301, so that when the prestressed steel rod contacts the hardness tester 103, the receiving plate 301 supports and limits the lower part of the prestressed steel rod, so that the detection of the hardness tester 103 is more accurate.

[0046] like Figure 5 As shown, a bridge wheel 303 is rotatably mounted on one side of the receiving plate 301 close to the adjusting plate 201. By rotatably mounting the bridge wheel 303 on the side of the receiving plate 301, the bridge wheel 303 rotates on the side of the receiving plate 301, thereby facilitating the lifting and lowering movement of the adjusting plate 201 by the bridge wheel 303.

[0047] like Figure 5 As shown, the outer side of the bridge wheel 303 is meshed with multiple sets of fixed gears 304, and the multiple sets of fixed gears 304 are fixedly sleeved on the outer side of the lifting screw 302. By meshing the multiple sets of fixed gears 304 on the outer side of the bridge wheel 303, it is convenient to mesh and drive the multiple sets of fixed gears 304 to rotate through the bridge wheel 303.

[0048] like Figures 2 to 5As shown, a plurality of evenly distributed lifting screws 302 are rotatably mounted on one side of the receiving plate 301 close to the adjusting plate 201, and the plurality of lifting screws 302 are all arranged through the adjusting plate 201, and the lifting screws 302 are threadedly connected with the adjusting plate 201. Through the arrangement of the plurality of lifting screws 302, the lifting screws 302 are threadedly connected with the adjusting plate 201, so that the driving gear 305 is engaged with the bridge wheel 303 to rotate, so that the bridge wheel 303 is engaged with the transmission plurality of fixed gears 304 to rotate, so that the adjusting plate 201 moves outside the plurality of rotating lifting screws 302, so that through the arrangement of the lifting screws 302, the device can be convenient for limiting and clamping prestressed steel bars of different lengths, thereby increasing the scope of application of the device.

[0049] like Figure 5 As shown, the outer side of the bridge wheel 303 is meshed with a driving gear 305. By meshing the driving gear 305 on the outer side of the bridge wheel 303, it is convenient to adjust the driving gear 305 to rotate, so that the driving gear 305 meshes and drives the bridge wheel 303 to rotate, thereby causing the bridge wheel 303 to drive multiple groups of fixed gears 304 to rotate.

[0050] like Figure 5 As shown, a connecting rod 306 is fixedly mounted inside the driving gear 305, and the connecting rod 306 is rotatably mounted on one side of the receiving plate 301. Through the setting of the connecting rod 306, it is convenient to rotatably mount the driving gear 305 on the side of the receiving plate 301 through the connecting rod 306, so that by adjusting the rotation of the connecting rod 306, the connecting rod 306 adjusts the rotation of the driving gear 305, so that the driving gear 305 is externally meshed with the bridge wheel 303 and rotates on the side of the receiving plate 301, so that it is convenient to adjust the lifting and lowering movement of the adjusting plate 201 by rotating the connecting rod 306.

[0051] like Figure 5 As shown, a handle 307 is fixedly mounted on one end of the connecting rod 306 away from the driving gear 305. By fixing the handle 307 on the side of the connecting rod 306, it is convenient to adjust the rotation of the connecting rod 306 through the handle 307, so that the connecting rod 306 adjusts the rotation of the driving gear 305, so that the driving gear 305 meshes with the transmission bridge wheel 303 to rotate, so that the device can limit the support of prestressed steel bars of different lengths.

[0052] like Figures 2 to 5 As shown, the top ends of the multiple sets of lifting screws 302 are fixedly mounted with limit plates 308, which are arranged in cooperation with the adjustment plate 201. By setting the multiple sets of limit plates 308, it is convenient to limit the moving path of the adjustment plate 201 outside the lifting screws 302 through the multiple sets of limit plates 308, so that the device can limit and clamp prestressed steel bars of different lengths.

[0053] During specific use, when the hardness of the prestressed steel rod is tested by this device, the matching bolt 208 is adjusted to move away from the limiting groove 207, and the matching bolt 208 is separated from the limiting groove 207, so that the matching bolt 208 moves in the adjustment groove 206, so that the matching plate 202 and the matching bolt 208 rotate on the adjustment plate 201.

[0054] When the matching plate 202 moves relative to the adjustment plate 201, the multiple groups of connecting rods 204 slide and move in the movable sleeves 209, and the multiple groups of movable sleeves 209 cooperate with the connecting rods 204 to rotate and move between the matching plate 202 and the fixed plate 203. The matching bolts 208 are adjusted to move to the edge of the adjustment slot 206 in cooperation with the matching plate 202, so that the multiple groups of abutting blocks 205 are at the maximum spacing, and the matching bolts 208 are moved to the bottom of the adjustment slot 206, so that the matching bolts 208 are matched with the limiting slots 207.

[0055] Then, the prestressed steel bar to be measured for hardness is vertically passed through the matching plate 202 and placed above the receiving plate 301, and the handle 307 is turned to adjust the connecting rod 306 to rotate, so that the connecting rod 306 drives the driving gear 305 to rotate, so that the driving gear 305 externally meshes with the bridge wheel 303 to rotate, so that the bridge wheel 303 externally meshes with multiple groups of fixed gears 304 to rotate, so that the fixed gear 304 drives the lifting screw 302 to rotate, and the adjustment plate 201 moves outside the multiple groups of lifting screws 302. Thus, by turning the handle 307 to adjust the adjustment plate 201 to move up and down outside the lifting screw 302, the center of gravity of the prestressed steel bar is between the matching plate 202 and the receiving plate 301.

[0056] Subsequently, the matching plate 202 is adjusted in the same manner as above, so that the multiple sets of pressing blocks 205 between the matching plate 202 and the fixed plate 203 are pressed against the outside of the prestressed steel rod, and then the lifting platform 102 is adjusted to move closer to the hardness tester 103, so that the hardness tester 103 can detect the hardness of the prestressed steel rod.

[0057] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0058] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A prestressed steel bar hardness detection device, characterized in that: include: A hardness tester (1), the hardness tester (1) comprising a test bench (101), a lifting platform (102) and a hardness tester (103), wherein the lifting platform (102) is fixedly installed inside the test bench (101), and the hardness tester (103) is fixedly installed above the lifting platform (102); A limit clamping mechanism (2) is fixedly mounted above the lifting platform (102), the limit clamping mechanism (2) comprising an adjusting plate (201), the adjusting plate (201) is fixedly mounted above the lifting platform (102), a matching plate (202) is rotatably mounted above the adjusting plate (201), a fixed plate (203) is fixedly mounted at one end of the matching plate (202) away from the adjusting plate (201), a plurality of groups of evenly distributed connecting rods (204) are slidably mounted between the fixing plate (203) and the matching plate (202), one end of the connecting rod (204) away from the fixing plate (203) is hingedly connected to the top of the adjusting plate (201), and one end of the connecting rod (204) close to the fixing plate (203) is hingedly connected to a pressing block (205); The lifting and adjusting mechanism (3) is fixedly mounted below the adjusting plate (201), and the lifting and adjusting mechanism (3) comprises a receiving plate (301), and the receiving plate (301) is fixedly mounted above the lifting platform (102). A plurality of groups of evenly distributed lifting screw rods (302) are rotatably mounted on a side of the receiving plate (301) close to the adjusting plate (201), and the plurality of groups of lifting screw rods (302) are all arranged to penetrate the adjusting plate (201), and the lifting screw rods (302) are threadedly connected to the adjusting plate (201).

2. A prestressed steel bar hardness detection device according to claim 1, characterized in that: An adjustment groove (206) is bored on the top of the adjustment plate (201), and a plurality of evenly distributed limit grooves (207) are bored on the bottom of the adjustment groove (206).

3. A prestressed steel bar hardness detection device according to claim 2, characterized in that: A mating bolt (208) is threadedly mounted on one side of the mating plate (202). The mating bolt (208) passes through the mating plate (202). One end of the mating bolt (208) located in the adjustment groove (206) is threadedly mated with the limiting groove (207).

4. A prestressed steel bar hardness detection device according to claim 3, characterized in that: A plurality of groups of evenly distributed movable sleeves (209) are hinged between the matching plate (202) and the fixed plate (203), and the plurality of groups of movable sleeves (209) are slidably sleeved on the outer side of the connecting rod (204).

5. A prestressed steel bar hardness detection device according to claim 4, characterized in that: A plurality of groups of evenly distributed connecting plates (210) are fixedly installed between the matching plate (202) and the fixed plate (203), and the plurality of groups of connecting plates (210) and the movable sleeve (209) are staggeredly distributed.

6. A prestressed steel bar hardness detection device according to claim 1, characterized in that: A bridge wheel (303) is rotatably mounted on one side of the receiving plate (301) close to the adjusting plate (201), and multiple groups of fixed gears (304) are meshed on the outer side of the bridge wheel (303). The multiple groups of fixed gears (304) are fixedly sleeved on the outer side of the lifting screw (302).

7. A prestressed steel bar hardness detection device according to claim 6, characterized in that: A driving gear (305) is meshed on the outer side of the bridge wheel (303).

8. A prestressed steel bar hardness detection device according to claim 7, characterized in that: A connecting rod (306) is fixedly sleeved inside the driving gear (305), and the connecting rod (306) is rotatably mounted on one side of the receiving plate (301).

9. A prestressed steel bar hardness detection device according to claim 8, characterized in that: A handle (307) is fixedly mounted on one end of the connecting rod (306) away from the driving gear (305).

10. A prestressed steel bar hardness detection device according to claim 9, characterized in that: A limit plate (308) is fixedly mounted on the top ends of the plurality of lifting screw rods (302), and the limit plate (308) is arranged in coordination with the adjustment plate (201).

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