Quality detection device for bridge steel bar connecting part

Abstract

The invention belongs to the technical field of quality detection of reinforcing steel bar connecting parts, and particularly relates to a quality detection device for a bridge reinforcing steel bar connecting part, which comprises a machine table, a fixed seat I and a fixed seat II are arranged on the machine table, a lifting frame is mounted outside the fixed seat II, and a fixed table is rotatably arranged outside the fixed seat I; the fixing table and the machine table are fixedly installed, a motor is in transmission connection with the center of the bottom of the first fixing base, fixing grooves are formed in the first fixing base and the second fixing base, clamping blocks are arranged on the two sides of each fixing groove, and a steel bar connected and fixed through a sleeve is placed between the first fixing base and the second fixing base. A vertically-lifting lifting rod is arranged on the inner wall, away from the steel bar, of the fixing groove, and the end, facing the steel bar, of the lifting rod is connected with a probe. The device can selectively or simultaneously perform drawing or torsion force application on the reinforcing steel bar, so that the detection applicability is improved, and the stress change of each position is monitored through the strain gauges distributed outside the sleeve.

Description

Technical Field

[0001] The present invention relates to the technical field of quality detection of steel bar connection parts, and in particular to a quality detection device for bridge steel bar connection parts. Background Art

[0002] As the requirements for safety, durability and construction efficiency of building bridge structures continue to increase, high-strength steel bars are widely used in major projects due to their excellent mechanical properties and material-saving advantages. Straight thread sleeve connection technology has become the preferred method for steel bar connection due to its high efficiency, reliability and environmental protection. It is generally necessary to test the connection quality of the straight thread sleeve connecting the steel bars.

[0003] The Chinese patent with patent announcement number CN117147134B discloses a steel sleeve connection quality detection device, which specifically includes: an installation mechanism; the installation mechanism includes a main frame, a connecting hole and a slide groove, a rectangular through groove is provided inside the main frame, and the main frame is a rectangular structure, and two groups of circular through holes are opened at the upper end of the front side of the main frame; there are two groups of connecting holes, and the connecting holes are symmetrically opened at the inner ends on both sides of the bottom of the main frame, the connecting holes pass through both sides of the main frame, and internal threads are provided inside the connecting holes; the slide groove is opened at the lower end of the inner side of the main frame; a connecting component is provided on the installation mechanism, and the connecting component includes a base and a slot, the base is a rectangular structure, and the base is arranged on the front side of the main frame, and the end of the connecting rod on the bottom side of the base is threadedly installed in the connecting hole inside the main frame.

[0004] However, the quality inspection of the steel bar connection sleeve in the prior art is limited, and the loosening of the fixed position of the steel bar end will affect the accuracy of the inspection. Summary of the Invention

[0005] Based on the technical problems of the background technology, the present invention proposes a quality detection device for bridge steel bar connection components.

[0006] The present invention proposes a bridge steel bar connection component quality inspection device, a bridge steel bar connection component quality inspection device, including a machine platform, a fixed seat 1 and a fixed seat 2 are provided on the machine platform, a lifting frame is installed outside the fixed seat 2, a fixed platform is rotatably provided outside the fixed seat 1, the fixed platform is fixedly installed between the machine platform, a motor is connected to the bottom center position of the fixed seat 1 for transmission, the fixed seat 1 and the fixed seat 2 are both provided with a fixing groove, clamping blocks are provided on both sides of the fixing groove, and steel bars fixed by sleeve connection are placed between the fixed seat 1 and the fixed seat 2, a lifting rod for vertical lifting is provided on the inner wall of the fixed groove away from the steel bar, a probe is connected to the end of the lifting rod facing the steel bar, a swingable pressure plate structure 1 is provided on the side of the clamping block facing the steel bar, the clamping block is arranged into detachable block 1, block 2 and block 3, a swingable pressure plate structure 2 is provided between the two blocks 2 and between the two blocks 3, the pressure plate structure 1 is provided with pressure plate 1, and the pressure plate structure 2 is provided with pressure plate 2; a pressure sensor is connected between the probe and the lifting rod, and a plurality of strain gauges are connected to the outer wall of the sleeve.

[0007] Preferably, the second pressure plate structures of two adjacent clamping blocks are distributed at both ends of the steel bar, and when the first pressure plate structure swings away from the steel bar, the second pressure plate structure can be driven to swing toward the steel bar.

[0008] Preferably, a mounting groove is provided at a position of the clamping block corresponding to the first pressure plate structure, a shaft rod is fixed to the bottom of the first pressure plate, and an end of the shaft rod is rotationally connected to the mounting groove via a torsion spring.

[0009] Preferably, the second pressure plate structure is provided with a second shaft rod rotatably connected to the clamping block, and the second shaft rod is arranged perpendicular to the side of the clamping block, the outer wall of the second shaft rod is fixed to the second pressure plate, and the side of the clamping block is provided with a positioning hole symmetrical to the second shaft rod.

[0010] Preferably, a plurality of limiting strips are fixed on the side of the first pressing plate facing the steel bar. When the second pressing plate is in contact with the steel bar, the second pressing plate is away from the two ends of the shaft and is located between adjacent convex strips on the steel bar.

[0011] Preferably, a sliding connecting strip is provided below the shaft rod 1 near the position of the shaft rod 2, the connecting strip is provided parallel to the shaft rod 2, a spring is connected between the end of the connecting strip and the clamping block, a fixing ring is installed at a position on the outer wall of the shaft rod 1 corresponding to the connecting strip, a plurality of tooth blocks 1 are fixed outside the fixing ring, tooth blocks 2 distributed at equal distances are fixed on the top of the connecting strip, and the connecting strip and the shaft rod 2 are connected by transmission.

[0012] Preferably, the tooth block 1 outside the fixing ring is arranged in an arc shape, and when the pressure plate 1 is vertical, the end of the connecting strip slides outward to contact the steel bar under the meshing action of the tooth block 1 and the tooth block 2.

[0013] Preferably, a shaft rod 3 is rotatably arranged in the clamping block between the shaft rod 2 and the connecting bar, and a gear 1 meshing with the gear block 2 is fixed to the outer wall of the shaft rod 3.

[0014] Preferably, gear 2 is fixed at a position on the outer wall of shaft rod 2 corresponding to shaft rod 3, and a position on the outer wall of shaft rod 3 corresponding to gear 2 is configured as a worm structure.

[0015] Preferably, block two and block three are installed on the side of block one facing the middle position of the fixing groove, shaft rod one and pressure plate one are arranged in block two, and shaft rod two and shaft rod three are arranged in block three.

[0016] The beneficial effects of the present invention are: In the present invention, the lifting frame pulls the steel bar upward with the fixed seat 2 to perform axial force detection, or the motor rotates the fixed seat 1 to twist and apply force in the circumferential direction of the steel bar connection component, so that the quality of the steel bar connection component can be detected in multiple directions as needed, thereby improving the applicability of the detection; the quality is judged by observing whether the state of the steel bar and the sleeve is deformed or damaged, and the stress changes at various positions are monitored by strain gauges distributed outside the sleeve to infer the quality of the steel bar connection component.

[0017] In the present invention, the change in the pressure value of the upper and lower position probes in contact with the end of the steel bar is used to determine whether slippage occurs between the steel bar and the clamping block, thereby determining the accuracy and validity of the test data; thereby, the effective clamping force on the steel bar can be controlled, avoiding excessive squeezing and clamping that causes the steel bar clamping position to break and affect the accuracy of the test, and also avoiding the clamping force being too small that causes slippage and affects the accuracy of the test.

[0018] In the present invention, since the pulling force on the steel bar and the rotational torsional force need to ensure the vertical stability of the steel bar during the quality inspection of the steel bar connection parts, when two adjacent clamps clamp the steel bar, the pressure plate 1 of the pressure plate structure 1 and the pressure plate 2 of the pressure plate structure 2 are in contact and squeezed with the surface of the steel bar, and the striped protruding parts on the outside of the steel bar improve the firmness of the clamping block position to fix the steel bar and the anti-deviating effect, thereby improving the effectiveness and accuracy of the quality inspection of the steel bar connection parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a bridge steel bar connection component quality inspection device proposed by the present invention; Figure 2 This is a schematic diagram of the position structure of a fixing seat of a bridge steel bar connection component quality inspection device proposed by the present invention; Figure 3 This is a schematic diagram of the clamping block position structure of a bridge steel bar connection component quality inspection device proposed by the present invention; Figure 4This is a schematic structural diagram of a pressure plate 1 and a pressure plate 2 of a bridge steel bar connection component quality inspection device proposed by the present invention; Figure 5 This is a schematic structural diagram of the connection position of the shaft rod 1 and the shaft rod 2 of the bridge steel bar connection component quality inspection device proposed by the present invention; Figure 6 This is a schematic diagram of the clamping block structure of a bridge steel bar connection component quality inspection device proposed by the present invention; Figure 7 This is a schematic diagram of the three-position structure of a bridge steel bar connection component quality inspection device proposed by the present invention; Figure 8 This is a schematic diagram of the block 2 position structure of a bridge steel bar connection component quality inspection device proposed by the present invention; Figure 9 This is a schematic diagram of the steel bar end structure of a bridge steel bar connection component quality inspection device proposed by the present invention.

[0020] In the figure: 1 machine, 2 frame, 3 fixing seat 1, 4 fixing seat 2, 5 lifting frame, 6 fixing table, 7 motor, 8 clamping block, 801 block 1, 802 block 2, 803 block 3, 9 steel bar, 901 groove, 10 sleeve, 11 pressure plate structure 1, 12 pressure plate structure 2, 13 mounting slot, 14 shaft rod 1, 15 pressure plate 1, 16 limit strip, 17 shaft rod 2, 18 pressure plate 2, 19 connecting strip, 191 limit slot, 20 spring, 21 fixing ring, 22 gear block 1, 23 gear 2, 24 shaft rod 3, 25 gear 1, 26 gear block 2, 27 telescopic slot, 28 limit block, 29 movable slot, 30 positioning hole, 31 lifting rod, 32 probe. DETAILED DESCRIPTION

[0021] Example 1: Reference Figures 1-9A quality inspection device for bridge steel bar connection components includes a machine platform 1, a protective frame 2 is installed on the machine platform 1, a fixed seat 3 and a fixed seat 2 4 are provided on the machine platform 1, a lifting frame 5 is installed outside the fixed seat 2 4, a fixed platform 6 is rotatably provided outside the fixed seat 3, the fixed platform 6 is fixedly installed between the machine platform 1, a motor 7 is transmission-connected to the center position of the bottom of the fixed seat 3, fixed grooves are provided at the facing positions of the fixed seat 1 3 and the fixed seat 2 4, and openings are provided at both ends of the fixed groove. Clamps 8 that slide horizontally through hydraulic control are provided on both sides of the fixed groove. Steel bars 9 connected and fixed by sleeves 10 are placed between the fixed seat 1 3 and the fixed seat 2 4. The fixed seat 1 3 and the fixed seat 2 4 clamp and fix the ends of the steel bars 9 through the clamps 8 on both sides of the fixed groove. A lifting rod 31 that lifts vertically is provided on the inner wall of the fixed groove away from the steel bars 9, and the lifting rod 31 is directed toward the end of the steel bars 9. A probe 32 is connected, and the probe 32 is arranged to form an arched arc structure toward the end of the steel bar 9. A groove 901 of an arc structure is opened at the position corresponding to the probe 32 at the end of the steel bar 9, and the inner diameter of the groove 901 is larger than the outer diameter of the end of the probe 32; a pressure sensor is connected between the probe 32 and the lifting rod 31, and a plurality of strain gauges are connected to the outer wall of the sleeve 10; when testing the quality of the sleeve 10 for connecting two steel bars, after the sample is fixedly connected through the sleeve 10, the steel bar 9 is placed vertically and the groove 901 at the end of the steel bar 9 corresponds to the probe 32 at the upper and lower positions. The steel bar 9 is conveniently and quickly placed vertically and clamped and fixed by overlapping the probe 32 and the groove 901, so as to avoid affecting the subsequent detection accuracy due to the tilt of the steel bar 9; the lifting frame 5 is lifted and lowered with the fixing seat 24 to adapt to the length of the steel bar, and the upper and lower pressure sensors generate pressure data; Then, the ends of the steel bars 9 are clamped and fixed by adjacent clamping blocks 8 at upper and lower positions, and multiple strain gauges are connected at the position of the sleeve 10 to monitor the stress changes at the position of the sleeve 10; During the test, the lifting frame 5 pulls the steel bar upward with the fixed seat 2 4 to perform axial force detection, or the motor 7 rotates the fixed seat 1 3 to apply twisting force to the circumferential direction of the steel bar connection component, so that the quality of the steel bar connection component can be detected in multiple directions according to needs, thereby improving the applicability of the detection; then the quality is judged by observing whether the state of the steel bar 9 and the sleeve 10 is deformed or damaged, and the stress changes at various positions are monitored by the strain gauges distributed outside the sleeve 10 to infer the quality of the steel bar connection component; at the same time, during the detection process, the pressure value change of the upper and lower position probes 32 in contact with the end of the steel bar 9 is used to judge whether slippage occurs between the steel bar 9 and the clamping block 8, thereby judging the accuracy and validity of the detection data; thereby, the effective clamping force on the steel bar can be controlled, avoiding excessive squeezing and clamping that causes breakage of the steel bar clamping position and affects the accuracy of the test, and avoiding slippage caused by too small clamping force that affects the accuracy of the test.

[0022] In the present invention, a swingable pressure plate structure 11 is provided on the side of the clamping block 8 facing the steel bar 9, and the clamping block 8 is configured as a detachable block 1 801, a block 2 802 and a block 3 803. A swingable pressure plate structure 2 12 is provided between the two blocks 2 802 and between the two blocks 3 803, and the pressure plate structures 2 12 of two adjacent clamping blocks 8 are distributed at both ends of the steel bar 9, so that the steel bar 9 and the adjacent clamping blocks 8 are distributed with two pressure plate structures 11 and pressure plate structures 2 12 arranged at intervals in the circumferential direction of the corresponding clamping positions. When the pressure plate structure 11 swings in the direction away from the steel bar 9, it can drive the pressure plate structure 2 12 to swing in the direction close to the steel bar 9. When the two adjacent clamps 8 are clamping the steel bars 9, the pressure plate structure 1 11 and the pressure plate structure 2 12 are in contact and squeezed with the surface of the steel bars 9. Through the protruding stripes on the outside of the steel bars, when the steel bars slide relative to the clamps 8, the pressure plate structure 1 11 is pushed outward, thereby driving the pressure plate structure 2 12 to swing toward the steel bars to increase the squeezing force. The sliding of the steel bars will also exert an outward force on the pressure plate structure 2 12. As a result, when the steel bars slide, the pressure plate structure 1 11 and the pressure plate structure 2 12 exert force on each other, thereby improving the firmness of the clamps 8 on the steel bars 9 and the anti-deviating effect, thereby improving the effectiveness and accuracy of the quality inspection of the steel bar connection components.

[0023] In the present invention, a mounting groove 13 is provided at the position corresponding to the clamping block 8 and the pressure plate structure 11, and the pressure plate structure 11 is provided with a pressure plate 15. A horizontally extending shaft rod 14 is fixed to the bottom of the pressure plate 15, and an axial hole 1 is provided at the position corresponding to the inner wall of the installation groove 13 and the shaft rod 14. The end of the shaft rod 14 is rotatably connected to the corresponding shaft hole bracket in the installation groove 13 through a torsion spring. The shaft rod 14 is arranged parallel to the side of the clamping block 8, and the cross-section of the installation groove 13 is larger than the cross-section of the pressure plate 15. In the initial state, the two clamping blocks 8 are separated and under the action of the torsion spring, the top of the pressure plate 15 is offset toward the outside of the installation groove 13. When the two adjacent clamping blocks 8 clamp and fix the steel bar 9, the pressure plate 15 will be retracted into the installation groove 13 until the plane of the pressure plate 15 is flush with the side of the clamping block 8. At this time, the outer wall of the steel bar is in contact with the clamping block 8 and the pressure plate 15 at the same time to clamp the steel bar.

[0024] In the present invention, the pressure plate structure 12 is provided with a shaft 17 rotatably connected to the clamping block 8. The shaft 17 is located at the end position of the pressure plate structure 11, and the shaft 17 is perpendicular to the side of the clamping block 8. The outer wall of the shaft 17 is fixed with a pressure plate 18. The side of the clamping block 8 is provided with a positioning hole 30 symmetrical to the shaft 17. In the initial state, when the steel bar is placed, the pressure plate 18 does not contact the surface of the steel bar, and the pressure plate structure 12 will move away from the steel bar 9 in the side direction with the clamping block 8; when two adjacent clamping blocks 8 approach each other to clamp the steel bar, the shaft 17 rotatably connected to the side of the clamping block 8 will be inserted into the positioning hole 30 of the adjacent clamping block 8, and the shaft 17 can rotate in the positioning hole 30. Then, when the steel bar 9 pushes the pressure plate 15 of the extrusion plate structure 11 outward, the pressure plate 2 18 in the pressure plate structure 2 12 can be deflected toward the steel bar 9 until the side of the pressure plate 15 is flush with the clamping block 8 so that the pressure plate 2 18 is away from the end of the shaft rod 2 17 and rests on the surface of the steel bar; it should be noted that: according to needs, the initial position of the pressure plate 2 18 can be adjusted to fix steel bars of different sizes; and after the steel bar is initially placed, the pressure plates 15 and 18 distributed around can be used to correct the steel bar 9 during the slow approach of the two clamping blocks 8 to ensure the accuracy of the vertical placement of the steel bar, thereby improving the accuracy and stability of subsequent quality inspections of the steel bar connection components.

[0025] In the present invention, a plurality of limiting strips 16 are fixed on the side of the pressure plate 15 facing the steel bar 9. When the pressure plate 15 is used to clamp the steel bar, some of the limiting strips 16 will be embedded between adjacent convex strips on the outer wall of the steel bar, thereby ensuring the stability of the clamping block 8 in clamping the steel bar. At the same time, when the steel bar slides relative to the clamping block 8, the limiting strips 16 can be squeezed outward to push the pressure plate 15 outward, and when the pressure plate 2 18 is in contact with the steel bar 9, the pressure plate 2 18 can be away from the end of the shaft rod 2 17 and located between adjacent convex strips on the steel bar 9 as needed, thereby improving the limiting and stabilizing effect of the pressure plate 2 18 on the steel bar; and by setting the position of the limiting strips 16 and the end of the pressure plate 2 18 in contact, the stability between the clamping block 8 and the steel bar can be guaranteed when the steel bar is twisted for detection by rotating the fixing seat 1 3.

[0026] In the present invention, a slidable connecting strip 19 is provided below the shaft rod 14 near the position of the shaft rod 2 17, and the connecting strip 19 is provided in parallel with the shaft rod 2 17. A spring 20 is connected between the end of the connecting strip 19 facing the clamping block 8 and the clamping block 8. A fixing ring 21 is installed at a position corresponding to the outer wall of the shaft rod 14 and the connecting strip 19. A plurality of tooth blocks 1 22 are fixed outside the fixing ring 21, and tooth blocks 2 26 distributed at equal distances are fixed on the top of the connecting strip 19. The connecting strip 19 is in transmission connection with the shaft rod 2 17; the tooth blocks 1 22 outside the fixing ring 21 are distributed in an arc shape. In the initial state, when the pressure plate 15 deflects outward, the tooth block 1 22 does not contact the tooth block 2 26, and the connecting strip 19 contracts inward under the action of the spring 20. When the pressure plate 15 tends to When the teeth are vertical, the tooth block 1 22 engages with the tooth block 2 26 until the pressure plate 15 is vertical. Under the action of the tooth block 1 22 and the tooth block 2 26, the end of the connecting bar 19 slides outward to contact the steel bar 9. Therefore, if the pressure plate 15 is squeezed by the steel bar during the clamping process, the connecting bar 19 and the pressure plate 2 18 will squeeze the steel bar at the same time, thereby improving the stability of the steel bar fixation. The arc-shaped tooth block 1 22 avoids the pressure plate 2 18 from moving in an area that is too large, thereby avoiding affecting the positioning effect of the initial placement of the steel bar. It should be noted that: a limiting groove 191 is provided on the side of the connecting bar 19, and a limiting block 28 is provided in the clamping block 8 to limit the sliding of the limiting groove 191 to ensure that the connecting bar 19 slides horizontally along the extension direction of the shaft rod 2 17.

[0027] Example 2: A quality inspection device for bridge steel bar connection components. Based on Example 1, a transmission connection is achieved between the connecting bar 19 and the shaft rod 2 17 through a crank-connecting rod structure, so that the circumferential rotation of the shaft rod 2 17 is achieved through the horizontal displacement of the connecting bar 19, so that the pressure plate 1 15 is subjected to an inward force during the clamping process and can drive the pressure plate 2 18 to squeeze the surface of the steel bar.

[0028] Example 3: A quality inspection device for bridge steel bar connection components. Based on Example 1, a shaft rod 3 24 is rotatably provided in the clamping block 8 between the shaft rod 2 17 and the connecting bar 19. A gear 1 25 meshing with the tooth block 2 26 is fixed to the outer wall of the shaft rod 3 24. The shaft rod 3 24 and the shaft rod 2 17 are connected by a bevel gear set, so that during the clamping process, the pressure plate 15 is subjected to an inward force to drive the pressure plate 2 18 to squeeze the surface of the steel bar.

[0029] Example 4: Reference Figures 1-9, a bridge steel bar connection component quality inspection device, based on Example 1, a shaft rod three 24 is rotatably provided in the clamping block 8 between the shaft rod two 17 and the connecting bar 19, and a gear one 25 meshing with the tooth block two 26 is fixed on the outer wall of the shaft rod three 24, and a gear two 23 is fixed at the position corresponding to the outer wall of the shaft rod two 17 and the shaft rod three 24, and a worm structure is set at the position corresponding to the outer wall of the shaft rod three 24 and the gear two 23, so that the pressure plate one 15 is subjected to an inward force during the clamping process, which can drive the pressure plate two 18 to squeeze the steel bar surface, and the connection between the worm structure and the gear two 23 can effectively ensure the stability of the position of the pressure plate two 18 in the steel bar clamping operation, especially when the rotating fixed seat one 3 applies a torsional force to the steel bar connection component for testing, which can improve the stability of the clamping block 8 planar structure in clamping the steel bar 9.

[0030] In the present invention, the clamping block 8 is configured to be detachable block 1 801, block 2 802 and block 3 803, and block 2 802 and block 3 803 are installed on the side of block 1 801 facing the middle position of the fixed groove, shaft rod 14 and pressure plate 1 15 are arranged in block 2 802, shaft rod 2 17 and shaft rod 3 24 are arranged in block 3 803, and a telescopic groove 27 is provided at the position corresponding to block 1 801 and connecting bar 19 to ensure the movable distance of connecting bar 19, and a movable groove 29 is provided at the position corresponding to block 2 802 and block 3 803 and gear 1 25 and gear 2 23 to ensure the space for the connection parts between connecting bar 19 and shaft rod 2 17 to move. The disassembly setting of the protruding part of the clamping block 8 facilitates the disassembly and installation of pressure plate structure 1 11 and pressure plate structure 2 12 and the replacement of parts, and a groove body is specifically opened at the position corresponding to the connecting structure in the clamping block 8 to ensure the rigidity requirement of the clamping block 8.

[0031] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A bridge steel bar connection component quality inspection device, comprising a machine platform (1), a fixing seat 1 (3) and a fixing seat 2 (4) being provided on the machine platform (1), a lifting frame (5) being installed outside the fixing seat 2 (4), and characterized in that: The fixing seat 1 (3) is provided with a fixing platform (6) for rotation outside, and the fixing platform (6) is fixedly installed between the machine (1). The center position of the bottom of the fixing seat 1 (3) is connected to the motor (7). The fixing seat 1 (3) and the fixing seat 2 (4) are both provided with fixing grooves, and clamping blocks (8) are provided on both sides of the fixing grooves. The fixing seat 1 (3) and the fixing seat 2 (4) are used to place the steel bar (9) connected and fixed by the sleeve (10). The inner wall of the fixing groove away from the steel bar (9) is provided with a vertical lifting rod (31). The end of the rod (31) facing the steel bar (9) is connected to a probe (32), and the side of the clamping block (8) facing the steel bar (9) is provided with a swingable pressure plate structure (11), and the clamping block (8) is provided with a detachable block (801), a block (802) and a block (803). A swingable pressure plate structure (12) is provided between the two blocks (802) and between the two blocks (803). The pressure plate structure (11) is provided with a pressure plate (15), and the pressure plate structure (12) is provided with a pressure plate (18). A pressure sensor is connected between the probe (32) and the lifting rod (31), and a plurality of strain gauges are connected to the outer wall of the sleeve (10).

2. A bridge steel bar connection component quality inspection device according to claim 1, characterized in that: The second pressure plate structure (12) of the two adjacent clamping blocks (8) is distributed at both ends of the steel bar (9), and when the first pressure plate structure (11) swings in a direction away from the steel bar (9), it can drive the second pressure plate structure (12) to swing in a direction close to the steel bar (9).

3. A bridge steel bar connection component quality inspection device according to claim 2, characterized in that: A mounting groove (13) is provided at a position corresponding to the clamping block (8) and the pressure plate structure (11). A shaft (14) is fixed to the bottom of the pressure plate (15). The end of the shaft (14) is rotatably connected to the mounting groove (13) via a torsion spring.

4. A bridge steel bar connection component quality inspection device according to claim 3, characterized in that: The second pressure plate structure (12) is provided with a second shaft rod (17) rotatably connected to the clamping block (8), and the second shaft rod (17) is perpendicularly arranged to the side of the clamping block (8), the outer wall of the second shaft rod (17) is fixed to the second pressure plate (18), and the side of the clamping block (8) is provided with a positioning hole (30) symmetrical to the second shaft rod (17).

5. A bridge reinforcement connection component quality inspection device according to claim 4, characterized in that: A plurality of limiting strips (16) are fixed to the side of the first pressing plate (15) facing the steel bar (9). When the second pressing plate (18) is in contact with the steel bar (9), the end of the second pressing plate (18) away from the second shaft rod (17) is located between adjacent convex strips on the steel bar (9).

6. A bridge reinforcement connection component quality inspection device according to claim 4, characterized in that: A slidably arranged connecting strip (19) is provided below the shaft rod 1 (14) near the position of the shaft rod 2 (17). The connecting strip (19) is provided in parallel with the shaft rod 2 (17). A spring (20) is connected between the end of the connecting strip (19) and the clamping block (8). A fixing ring (21) is installed at a position corresponding to the outer wall of the shaft rod 1 (14) and the connecting strip (19). A plurality of tooth blocks 1 (22) are fixed outside the fixing ring (21). Tooth blocks 2 (26) distributed at equal distances are fixed on the top of the connecting strip (19). The connecting strip (19) and the shaft rod 2 (17) are connected in a transmission manner.

7. A bridge reinforcement connection component quality inspection device according to claim 6, characterized in that: The tooth block 1 (22) outside the fixing ring (21) is arranged in an arc shape. When the pressure plate 1 (15) is vertical, the tooth block 1 (22) and the tooth block 2 (26) mesh together to make the end of the connecting strip (19) slide outward to contact the steel bar (9).

8. A bridge reinforcement connection component quality inspection device according to claim 7, characterized in that: A shaft rod 3 (24) is rotatably provided in the clamping block (8) between the shaft rod 2 (17) and the connecting strip (19), and a gear 1 (25) meshing with the gear block 2 (26) is fixed to the outer wall of the shaft rod 3 (24).

9. A bridge reinforcement connection component quality inspection device according to claim 8, characterized in that: Gear 2 (23) is fixed at the position corresponding to the outer wall of the shaft rod 2 (17) and the shaft rod 3 (24), and the position corresponding to the outer wall of the shaft rod 3 (24) and the gear 2 (23) is set to a worm structure.

10. A bridge steel bar connection component quality inspection device according to claim 9, characterized in that: Block 2 (802) and block 3 (803) are installed on one side of block 1 (801) toward the middle position of the fixing groove, shaft rod 1 (14) and pressure plate 1 (15) are arranged in block 2 (802), and shaft rod 2 (17) and shaft rod 3 (24) are arranged in block 3 (803).

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