A reinforcing steel strength detection device for construction engineering
The clamping and bending mechanism driven by a servo motor solves the problems of loosening and low efficiency in rebar detection devices, achieving stable clamping and multiple bending detections, thus improving safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 雷亚楠
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-14
AI Technical Summary
Existing rebar strength testing devices are prone to loosening when fixing rebars, posing a safety hazard. Furthermore, the devices need to be replaced for fatigue testing, resulting in low testing efficiency.
By employing fixed and detection components, and using a clamping and bending mechanism driven by a servo motor, stable clamping and multiple bending tests of the reinforcing bars are achieved. The strength and fatigue are observed in conjunction with the servo motor and scale plate.
It improves the safety and efficiency of rebar inspection, can stably clamp the rebar, clearly observe the bending strength, and can simultaneously detect fatigue.
Smart Images

Figure CN224500225U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel bar strength testing technology, and in particular to a steel bar strength testing device for building engineering. Background Technology
[0002] Reinforcing steel is widely used in the construction industry. It is used to create steel frames, which, together with concrete, form the main load-bearing structure of a building. Reinforcing steel includes plain round bars, ribbed bars, and twisted bars. Reinforcing steel for reinforced concrete refers to straight or coiled steel bars used for reinforcing concrete; its shape is divided into plain round bars and deformed bars. Before using reinforcing steel in construction projects, its strength must be tested to ensure the quality of subsequent construction.
[0003] However, in existing technologies, most steel bar strength testing devices fix both ends of the steel bar and then use a hydraulic cylinder to press down on the middle part of the steel bar for testing. During the pressing process, the fixed ends of the steel bar bend and are subjected to large forces, which can cause the steel bar to loosen and fall off, posing a certain safety hazard. Moreover, the pressing can only test the strength of the steel bar. When fatigue testing is required, different testing devices need to be used, which reduces the efficiency of steel bar testing. Utility Model Content
[0004] The purpose of this invention is to address the problem that most existing rebar strength testing devices fix both ends of the rebar and then use a hydraulic cylinder to press down on the middle part of the rebar for testing. During the pressing process, the fixed ends of the rebar bend and are subjected to large forces, which can cause the rebar to loosen and fall off, posing a certain safety hazard. Moreover, the pressing can only test the strength of the rebar. When fatigue testing is required, different testing devices need to be used, which reduces the efficiency of rebar testing.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a steel reinforcement strength testing device for construction engineering, comprising: a table, and further comprising:
[0006] A fixing component is disposed at the center of the table body, the fixing component comprising:
[0007] A cylindrical object is fixedly positioned at the center of the table body and extends through the table body.
[0008] A limiting groove is formed at the center of the outer surface of the table;
[0009] Two rectangular plates are fixedly installed on both sides of the center of the bottom of the table body, and the two rectangular plates are symmetrical to each other;
[0010] The detection component is located on the top outer surface of the table.
[0011] Preferably, the fixing component further includes:
[0012] A bidirectional screw is movably mounted on one side of the opposing surfaces of the two rectangular plates;
[0013] A guide rod is fixedly installed on the side of the two rectangular plates opposite each other, away from the bidirectional screw.
[0014] Two movable plates are movably mounted on the outer surfaces of the bidirectional screw and the guide rod, and the two movable plates are symmetrical to each other;
[0015] Two connecting plates are fixedly installed at the center of the opposite surfaces of the two movable plates. Multiple connecting rods are fixedly installed on the opposite surfaces of the two connecting plates, and the connecting rods penetrate the cylinder.
[0016] The connecting plate can slide laterally inside the limiting through groove;
[0017] Multiple arc-shaped blocks are fixedly disposed on the opposite surfaces of the multiple connecting rods, and the multiple arc-shaped blocks are movably disposed inside the cylinder.
[0018] The technical effect of adopting the above-mentioned further solution is that the bidirectional screw drives the connecting plate, connecting rod and arc block to move relative to or away from each other through two moving plates, and adjusts according to the size of the reinforcing bar. The relative movement of the two sets of arc blocks clamps and fixes the reinforcing bar, so that the reinforcing bar is more stably embedded in the inside of the cylinder.
[0019] Preferably, the detection component includes:
[0020] Two semicircular plates are fixedly installed on the outer surface of the table body. The two semicircular plates are symmetrical to each other, and semicircular through grooves are opened on the outer surface of the two semicircular plates.
[0021] An arc-shaped adjusting plate is movably disposed inside the semi-circular through groove, and a through hole is provided at the center of the arc-shaped adjusting plate;
[0022] Both positioning plates are fixedly installed on the opposite side of the arc-shaped adjustment plate.
[0023] The technical effect of adopting the above-mentioned further solution is that the arc-shaped adjustment plate drives the steel bar embedded in the through hole to bend, and the bending value of the steel bar can be observed on the semi-circular scale plate by the indicator arrow on the top of the positioning plate.
[0024] Preferably, a mounting plate is fixedly installed at the center of both sides of the top of the table body, and a first servo motor is fixedly installed on the opposite side of the two mounting plates. Both positioning plates are connected to the output end of the first servo motor.
[0025] The technical effect of adopting the above-mentioned further solution is that: two first servo motors are activated simultaneously, which drive the arc-shaped adjustment plate to slide inside the semi-circular through groove through the positioning plate.
[0026] Preferably, an indicator arrow is fixedly provided on the top of both positioning plates.
[0027] The technical effect of adopting the above-mentioned further solution is that the value of the steel bar bending can be observed on the semi-circular scale plate by the indicator arrow on the top of the positioning plate.
[0028] Preferably, a semi-circular scale plate is fixedly provided on the outer surface of both semi-circular plates for detecting the strength value of the reinforcing bars.
[0029] The technical effect of adopting the above-mentioned further solution is that a second servo motor is fixedly installed on one outer surface of the semi-circular scale plate, and the output end of the second servo motor passes through the rectangular plate and is connected to the bidirectional screw.
[0030] The technical effect of adopting the above-mentioned further solution is: the second servo motor is turned on to drive the bidirectional screw to rotate, and the bidirectional screw drives the connecting plate, connecting rod and arc block to move relative to or away from each other through two moving plates, and adjusts according to the size of the steel bar.
[0031] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0032] 1. In this utility model, the reinforcing bar to be tested is inserted into the inside of the cylinder through the through hole. Then, the second servo motor is turned on to drive the bidirectional screw to rotate. The bidirectional screw drives the connecting plate, connecting rod and arc-shaped block to move relative to or away from each other through two moving plates. The adjustment is made according to the size of the reinforcing bar. The relative movement of the two sets of arc-shaped blocks clamps and fixes the reinforcing bar, making the reinforcing bar more stably embedded in the inside of the cylinder. The connecting rod can improve the stability of the arc-shaped block and make it better clamp the reinforcing bar. The upper end of the connecting plate is movably embedded in the limiting through groove. The limiting through groove can improve the stability of the connecting plate. In this way, when the reinforcing bar is bent, it will not come out of the inside of the cylinder, thus improving safety.
[0033] 2. In this utility model, two first servo motors are activated simultaneously, driving an arc-shaped adjusting plate to slide inside a semi-circular through groove via a positioning plate. The two first servo motors drive the positioning plate to rotate in the same direction. The arc-shaped adjusting plate drives the reinforcing bar embedded in the through hole to bend. The bending value of the reinforcing bar can be observed on the semi-circular scale plate indicated by the indicator arrow on the top of the positioning plate. The semi-circular scale plate is fixedly installed on the outer surface of the semi-circular plate, so the strength value of the reinforcing bar after bending can be more clearly understood. The two first servo motors can drive the reinforcing bar to bend back and forth via the positioning plate, so it can also be used to detect the fatigue of the reinforcing bar, greatly improving the efficiency of reinforcing bar detection. Attached Figure Description
[0034] Figure 1 This utility model provides a structural schematic diagram of a steel reinforcement strength testing device for building engineering;
[0035] Figure 2 This utility model provides a side view structural diagram of a steel reinforcement strength testing device for building engineering;
[0036] Figure 3 This utility model provides an exploded structural diagram of a steel reinforcement strength testing device for building engineering.
[0037] Figure 4 This utility model provides a cross-sectional structural schematic diagram of a steel reinforcement strength testing device for building engineering.
[0038] Legend:
[0039] 1. Table body; 101. Cylinder; 102. Limiting slot; 103. Arc-shaped block; 104. Mounting plate; 105. First servo motor; 106. Positioning plate; 107. Indicator arrow; 108. Semicircular scale plate; 109. Semicircular plate; 110. Semicircular slot; 111. Arc-shaped adjustment plate; 112. Through hole; 113. Rectangular plate; 114. Bidirectional screw; 115. Second servo motor; 116. Guide rod; 117. Moving plate; 118. Connecting plate; 119. Connecting rod. Detailed Implementation
[0040] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0041] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0042] Example 1, as Figure 1-4 As shown, this utility model provides a steel reinforcement strength testing device for building engineering, including: a table body 1, a fixing component, and a testing component;
[0043] The fixing components include: a cylinder 101 fixedly installed at the center of the table body 1, the cylinder 101 penetrating the table body 1; rectangular plates 113 fixedly installed on both sides at the center of the bottom of the table body 1; a bidirectional screw 114 movably embedded on one side of the opposite face of the two rectangular plates 113; a guide rod 116 fixedly installed on the other side of the opposite face of the rectangular plates 113; and two movable plates 117 movably fitted on the outer surfaces of the bidirectional screw 114 and the guide rod 116, the two movable plates 117 being symmetrical and their opposite faces... A connecting plate 118 is fixedly installed at the center of each of the two connecting plates 118. Multiple connecting rods 119 are fixedly installed on the opposite surfaces of the two connecting plates 118. The connecting rods 119 penetrate the cylinder 101. Arc-shaped blocks 103 are fixedly installed on the opposite surfaces of the two sets of connecting rods 119. The arc-shaped blocks 103 are movably embedded inside the cylinder 101. A second servo motor 115 is fixedly installed on one outer surface of one of the rectangular plates 113. The output end of the second servo motor 115 penetrates the rectangular plate 113 and is fixedly connected to the bidirectional screw 114.
[0044] In this embodiment, the reinforcing bar to be tested is inserted into the cylinder 101 through the through hole 112. Then, the second servo motor 115 is turned on to drive the bidirectional screw 114 to rotate. The bidirectional screw 114 drives the connecting plate 118, connecting rod 119 and arc block 103 to move relative to or away from each other through two moving plates 117. The movement is adjusted according to the size of the reinforcing bar. The relative movement of the two sets of arc blocks 103 clamps and fixes the reinforcing bar, making the reinforcing bar more stably embedded in the cylinder 101. The connecting rod 119 can improve the stability of the arc block 103, making it better clamp the reinforcing bar. The upper end of the connecting plate 118 is movably embedded in the limiting through groove 102. The limiting through groove 102 can improve the stability of the connecting plate 118. In this way, when the reinforcing bar is bent, the reinforcing bar will not come out of the cylinder 101, thus improving safety.
[0045] Example 2, as Figure 1-4 As shown, the detection assembly includes: semicircular plates 109 are fixedly installed on both sides of the top of the table body 1, semicircular through grooves 110 are opened on the outer surface of the semicircular plates 109, the two sides of the arc-shaped adjustment plate 111 are movably embedded in the interior of the semicircular through grooves 110, and a through hole 112 is opened at the center of the arc-shaped adjustment plate 111; mounting plates 104 are fixedly installed on both sides of the outer surface of the top of the table body 1, first servo motors 105 are fixedly installed on the opposite surfaces of the two mounting plates 104, positioning plates 106 are fixedly installed on the output ends of the two first servo motors 105, the two positioning plates 106 are fixedly installed on both sides of the arc-shaped adjustment plate 111, an indicator arrow 107 is fixedly installed on the top of the positioning plate 106, and semicircular scale plates 108 are fixedly installed on the outer surfaces of the two semicircular plates 109.
[0046] In this embodiment, two first servo motors 105 are simultaneously activated, driving the arc-shaped adjustment plate 111 to slide inside the semi-circular through groove 110 via the positioning plate 106. The two first servo motors 105 drive the positioning plate 106 to rotate in the same direction. The arc-shaped adjustment plate 111 drives the reinforcing bar embedded in the through hole 112 to bend. The bending value of the reinforcing bar can be observed on the semi-circular scale plate 108 indicated by the indicator arrow 107 on the top of the positioning plate 106. The semi-circular scale plate 108 is fixedly installed on the outer surface of the semi-circular plate 109, so the strength value of the reinforcing bar after bending can be more clearly understood. The two first servo motors 105 are the same in model, power, etc., so they can be started synchronously. The two first servo motors 105 can drive the reinforcing bar to reciprocate bending via the positioning plate 106, so it can also be used to detect the fatigue of the reinforcing bar, greatly improving the efficiency of reinforcing bar detection.
[0047] Working principle: The reinforcing bar to be tested is inserted into the cylinder 101 through the through hole 112. Then, the second servo motor 115 is turned on to drive the bidirectional screw 114 to rotate. The bidirectional screw 114 drives the connecting plate 118, connecting rod 119 and arc block 103 to move relative to or away from each other through two moving plates 117. The adjustment is made according to the size of the reinforcing bar. The relative movement of the two sets of arc blocks 103 clamps and fixes the reinforcing bar, making the reinforcing bar more stably embedded in the cylinder 101. The connecting rod 119 can improve the stability of the arc block 103 and make it better clamp the reinforcing bar. The upper end of the connecting plate 118 is movably embedded in the limiting through groove 102. The limiting through groove 102 can improve the stability of the connecting plate 118. In this way, when the reinforcing bar is bent, the reinforcing bar will not come out of the cylinder 101, thus improving safety.
[0048] Simultaneously, two first servo motors 105 are activated, driving the arc-shaped adjustment plate 111 to slide inside the semi-circular through groove 110 via the positioning plate 106. The two first servo motors 105 drive the positioning plate 106 to rotate in the same direction. The arc-shaped adjustment plate 111 drives the reinforcing bar embedded in the through hole 112 to bend. The bending value of the reinforcing bar can be observed on the semi-circular scale plate 108 indicated by the indicator arrow 107 on the top of the positioning plate 106. The semi-circular scale plate 108 is fixedly installed on the outer surface of the semi-circular plate 109, so the strength value of the reinforcing bar after bending can be more clearly understood. The two first servo motors 105 are the same in model and power, so they can be started synchronously. The two first servo motors 105 can drive the reinforcing bar to reciprocate bending via the positioning plate 106, so it can also be used to detect the fatigue of the reinforcing bar, greatly improving the efficiency of reinforcing bar detection.
[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A device for testing the strength of reinforcing steel bars used in construction engineering, comprising: The table body (1) is characterized in that it further includes: A fixing component is disposed at the center of the table body (1), the fixing component comprising: A cylindrical tube (101) is fixedly installed at the center of the table body (1) and extends through the table body (1). A limiting groove (102) is provided at the center of the outer surface of the table body (1); Two rectangular plates (113) are fixedly installed on both sides of the center of the bottom of the table body (1), and the two rectangular plates (113) are symmetrical to each other; The detection component is disposed on the top outer surface of the table body (1).
2. The steel reinforcement strength testing device for building engineering according to claim 1, characterized in that: The fixing component also includes: A bidirectional screw (114) is movably disposed on one side of the opposite surfaces of the two rectangular plates (113); The guide rod (116) is fixedly disposed on the side of the two rectangular plates (113) opposite to each other away from the bidirectional screw (114); Two movable plates (117) are movably disposed on the outer surfaces of the bidirectional screw (114) and the guide rod (116), and the two movable plates (117) are symmetrical to each other; Two connecting plates (118) are fixedly disposed at the center of the opposite surfaces of the two movable plates (117). Multiple connecting rods (119) are fixedly disposed on the opposite surfaces of the two connecting plates (118), and the connecting rods (119) penetrate the cylinder (101). The connecting plate (118) can slide laterally inside the limiting through groove (102); Multiple arc-shaped blocks (103) are fixedly disposed on the opposite surfaces of multiple connecting rods (119), and multiple arc-shaped blocks (103) are movably disposed inside the cylinder (101).
3. The steel reinforcement strength testing device for building engineering according to claim 1, characterized in that: The detection component includes: Two semicircular plates (109) are fixedly installed on the outer surface of the table body (1). The two semicircular plates (109) are symmetrical to each other, and semicircular through grooves (110) are opened on the outer surface of the two semicircular plates (109). An arc-shaped adjusting plate (111) is movably disposed inside the semi-circular through groove (110), and a through hole (112) is provided at the center of the arc-shaped adjusting plate (111). Both positioning plates (106) are fixedly set on the opposite side of the arc-shaped adjustment plate (111).
4. The steel reinforcement strength testing device for building engineering according to claim 3, characterized in that: Mounting plates (104) are fixedly installed at the center of both sides of the top of the table body (1). A first servo motor (105) is fixedly installed on the opposite side of the two mounting plates (104). The two positioning plates (106) are connected to the output end of the first servo motor (105).
5. The steel reinforcement strength testing device for building engineering according to claim 3, characterized in that: Indicator arrows (107) are fixedly provided on the top of both positioning plates (106).
6. The steel reinforcement strength testing device for building engineering according to claim 3, characterized in that: The outer surfaces of the two semicircular plates (109) are each fixedly provided with a semicircular scale plate (108) for detecting the strength value of the reinforcing bars.
7. The steel reinforcement strength testing device for building engineering according to claim 1, characterized in that: A second servo motor (115) is fixedly installed on one side of the outer surface of one of the rectangular plates (113). The output end of the second servo motor (115) passes through the rectangular plate (113) and is connected to the bidirectional screw (114).