A reinforcing steel bar bending testing device for engineering quality detection

Abstract

This utility model provides a rebar bending test device for engineering quality inspection, relating to the field of rebar testing technology. Its features include a hydraulic jacking rod structure, a limiting structure, and a base. The hydraulic jacking rod structure includes a jacking rod mounting seat and a hydraulic press. A jacking rod is movably fitted inside the jacking rod mounting seat. The limiting structure includes a clamping seat and jaws. The clamping seat has an arc-shaped notch on the side near the jacking rod, and a connecting rod is fixed to the side of the arc-shaped notch near the jacking rod. The jaws are rotatably connected to the connecting rod via a connecting shaft. Multiple sets of jaws are arranged alternately, with the upper jaws having a locking protrusion on the side away from the clamping seat, which cooperates with the groove of the lower jaws for limiting positioning and forming a workpiece slot with the arc-shaped notch to fix the workpiece position. The advantages of this utility model are: convenient loading and unloading of rebars, improved overall testing efficiency, and the ability to meet different bending test requirements.

Description

Technical Field

[0001] This utility model relates to the field of rebar testing technology, and in particular to a rebar bending test device for engineering quality testing. Background Technology

[0002] With the development of urban infrastructure, more and more urban roads and buildings are extending outwards along main roads. This brings with it increased pressure on the supervision of projects and raw materials. Reinforcing steel, as one of the core structural components of the entire building, must withstand significant forces. Therefore, there are strict requirements for the bending capacity of reinforcing steel, and it needs to be tested before construction. Currently, most existing devices use a fixed frame structure to fix the workpiece, followed by pressure testing with a hydraulic press. This structure often requires multiple sets of bolts and fixing plates for workpiece fixing, making the overall operation cumbersome. Loading and unloading the workpiece requires considerable effort, and the bending test cannot fully simulate the effects of different bending degrees or shear forces, thus failing to meet current testing needs. Utility Model Content

[0003] The purpose of this utility model is to provide a steel bar bending test device for engineering quality inspection, which solves the technical problems of the existing technology where the loading and unloading of workpieces is cumbersome and cannot fully simulate different bending effects. It achieves the technical effect of convenient workpiece loading and unloading operation and can fully simulate different bending conditions.

[0004] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:

[0005] A rebar bending test device for engineering quality inspection includes a hydraulic jacking structure, a limiting structure, and a base. The hydraulic jacking structure includes a jacking mounting base and a hydraulic press. A jacking rod is movably mounted inside the jacking mounting base. The hydraulic press is located on the side of the jacking mounting base away from the jacking rod and is used to control the movement distance of the jacking rod. The limiting structure is located on the side of the jacking mounting base away from the hydraulic press. There are two sets of limiting structures, symmetrically arranged with the axis of the hydraulic jacking structure as a reference. Each limiting structure includes a clamping seat and a chuck. The lower end of the clamping seat is detachably connected to the base by bolts. The side of the clamping seat near the jacking rod has an arc notch. A connecting rod is fixed to the side of the arc notch near the jacking rod. The inner side of the connecting rod has a through hole. The chuck is rotatably connected to the connecting rod through a connecting shaft. There are multiple sets of chucks arranged alternately. The upper part of the chuck has a locking protrusion on the side away from the clamping seat, which cooperates with the groove of the lower part of the chuck for limiting and forming a workpiece slot with the arc notch to fix the workpiece position.

[0006] As an improvement, the hydraulic jack structure also includes a fixed base, which is located at the lower end of the jack mounting base and is fixedly connected to the base by bolts. The fixed base has an internal cavity containing a control module. One end of the control module is connected to the hydraulic press via wiring. A control panel is fixed to the upper end of the jack mounting base, and the lower end of the control panel is connected to the control module via wiring for controlling the operation of the hydraulic press.

[0007] As an improvement, a sleeve is provided between the push rod mounting base and the push rod, the sleeve is directly opposite the clamping base, one end of the sleeve is movably and sealingly connected to the slot of the push rod mounting base, the end of the sleeve near the push rod has a connecting hole, and a claw ring is threaded to the outside of the connecting hole. The push rod is sleeved to the connecting hole through a snap ring and is detachably fixed by the claw ring.

[0008] As an improvement, a clamping platform is provided at the connection between the lower end of the limiting structure and the base. A slide rail is fixed at the upper end of the clamping platform. The lower end of the clamping platform has a sliding groove that slides and connects with the slide rail. The slide rail has a cavity inside, and a lead screw is fixed inside it. A gear set is provided inside the clamping platform. The lower end of the gear set is threaded with the lead screw. A handwheel is rotatably connected to the side of the clamping platform away from the chuck. The rotating shaft of the handwheel is connected to the gear set for driving the clamping platform to move on the slide rail.

[0009] As an improvement, a crank handle is provided on the side of the handwheel away from the clamping seat. The crank handle is rotatably connected to the handwheel via a rotating shaft to assist in the rapid rotation of the handwheel. The gear set is arranged vertically. The upper end of the clamping seat has a through hole. A limiting rod is movably fitted inside the through hole. The limiting rod is a right-angle rod. A limiting seat is fixed at its lower end near the gear set. The lower end of the limiting seat has a toothed groove. The toothed groove meshes with the gear set to limit the rotation of the gear set.

[0010] As an improvement, a limiting rod is provided on the side of the clamping base away from the handwheel. The limiting rods are symmetrically arranged with the axis of the hydraulic push rod structure as a reference. The distance between the limiting rods is greater than the distance between the clamping bases. The clamping platform has a mounting hole near the limiting rod. The limiting rod is movably connected to the mounting hole. A fixing plate is provided on one side of the mounting hole. The inner side of the fixing plate has bolts that are detachably connected to the limiting rod. The limiting rod is used to restrict the movement of the workpiece.

[0011] As an improvement, the base also includes threaded connection holes, mounting grooves, and connecting seats. The base is made entirely of a metal plate, with a protective plate fixed to its outer side. The threaded connection holes are located on the inner side of the protective plate, and there are multiple sets of threaded connection holes arranged vertically for fixing with bolts. The mounting groove is located on the inner side of the protective plate and between the threaded connection holes. The connecting seats are located at the four corners of the lower end of the base and are fixed by welding. The connecting seats have threaded holes inside, and an adjusting seat is threaded to its lower end. An anti-slip plate is fixed to the lower end of the adjusting seat. The lower end of the anti-slip plate has anti-slip textures, and there are threaded holes at the four corners. Limit bolts are connected to the inner side of the threaded holes for installation and fixing.

[0012] The beneficial effects of this utility model are as follows: by setting a hydraulic push rod structure and a limiting structure, the bending test requirements of the workpiece can be fully met; by setting a sleeve and a claw ring structure, the shape of the push rod can be adjusted according to the needs of use, thereby fully simulating different bending effects and improving the overall test effect; by setting a claw structure in the limiting structure, the entire workpiece can be fully gripped, ensuring the connection strength of the overall workpiece while facilitating the overall disassembly and installation; by setting a limiting rod structure, the clamping seat can be assisted in fixing the workpiece, while avoiding excessive deformation of the workpiece that would affect the overall clamping effect. Attached Figure Description

[0013] Figure 1 This is a front view of a steel bar bending test device for engineering quality inspection according to this utility model;

[0014] Figure 2 This is a top view of the clamping platform portion of a steel bar bending test device for engineering quality inspection according to this utility model;

[0015] Figure 3 for Figure 1 Enlarged cross-sectional view of part A.

[0016] In the diagram: 1. Hydraulic jacking structure; 2. Limiting structure; 3. Clamping platform; 4. Base;

[0017] 110. Top rod mounting bracket; 111. Control panel; 112. Sleeve; 113. Claw ring; 114. Top rod; 120. Hydraulic press; 130. Fixing base;

[0018] 210. Clamping seat; 220. Claw; 221. Connecting rod; 222. Locking protrusion; 223. Connecting shaft; 230. Handwheel; 231. Crank handle; 232. Limiting rod; 233. Limiting seat; 234. Rotating shaft; 235. Gear set;

[0019] 310. Slide rail seat; 311. Lead screw; 320. Limit rod;

[0020] 410 Threaded connection hole; 420 Mounting groove; 430 Connecting seat; 431 Adjusting seat; 432 Anti-slip plate; 433 Limit bolt. Detailed Implementation

[0021] To make the content of this utility model easier to understand, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0022] like Figures 1 to 3 As shown, a rebar bending test device for engineering quality inspection includes a hydraulic jacking structure 1, a limiting structure 2, and a base 4. The hydraulic jacking structure 1 includes a jacking rod mounting seat 110 and a hydraulic press 120. A jacking rod 114 is movably fitted inside the jacking rod mounting seat 110. The hydraulic press 120 is located on the side of the jacking rod mounting seat 110 away from the jacking rod 114 and is used to control the movement distance of the jacking rod 114. The limiting structure 2 is located on the side of the jacking rod mounting seat 110 away from the hydraulic press 120. There are two sets of limiting structures 2, symmetrically arranged with the axis of the hydraulic jacking structure 1 as a reference. The limiting structure 2 includes a clamping seat 210. The clamping base 210 is detachably connected to the base 4 via bolts, and the clamping base 210 has an arc-shaped notch on the side near the top rod 114. A connecting rod 221 is fixed to the side of the arc-shaped notch near the top rod 114. The inner side of the connecting rod 221 has a through hole. The clamping claw 220 is rotatably connected to the connecting rod 221 via a connecting shaft 223. The clamping claw 220 has multiple sets arranged alternately. The upper part of the clamping claw 220 has a locking protrusion 222 on the side away from the clamping base 210, which cooperates with the groove of the lower part of the clamping claw 220 to limit the movement and form a workpiece slot with the arc-shaped notch for fixing the workpiece position. The inner side of the clamping claw 220 has reinforcing ribs, which can be used to install rubber pads to adjust the inner dimensions of the entire set of clamping claws 220 and improve the friction connection effect, making the clamping of the steel workpiece more secure.

[0023] When in use, the operator separates the jaws 220 and passes the steel bar workpiece through the arc notch and moves it inward. At this time, the jaws 220 will be driven to rotate towards the clamping seat 210. Then, the position can be fixed by the clamping protrusion 222, thereby fixing the steel bar. At this time, the operator can start the hydraulic press 120 to push out the push rod 114 and bend the steel bar workpiece.

[0024] The hydraulic jacking rod structure 1 also includes a fixed base 130, which is located at the lower end of the jacking rod mounting base 110 and is fixedly connected to the base 4 by bolts. The fixed base 130 has an internal cavity containing a control module. One end of the control module is connected to the hydraulic press 120 via wiring. A control panel 111 is fixed to the upper end of the jacking rod mounting base 110, and the lower end of the control panel 111 is connected to the control module via wiring for controlling the operation of the hydraulic press 120. A sleeve 112 is provided between the jacking rod mounting base 110 and the jacking rod 114. The sleeve 112 faces the clamping base 210. One end of the sleeve 112 is movably and sealingly connected to the slot of the jacking rod mounting base 110. The end of the sleeve 112 near the jacking rod 114 has a connecting hole. A claw ring 113 is threaded onto the outer side of the connecting hole. The jacking rod 114 is sleeved and connected to the connecting hole via a snap ring and is detachably fixed by the claw ring 113. The outer side of the claw ring 113 has equally spaced grooves that can be rotated and removed with a wrench. The push rod 114 can be replaced with a U-shaped head, a triangular head, or other types according to usage requirements for bending tests under different conditions.

[0025] When in use, the operator can adjust the power of the hydraulic press 120 through the control panel 111 to record and control the overall pressure changes, making the measurement more accurate. When replacing the push rod 114, the claw ring 113 can be loosened with a wrench, and the push rod 114 and the retaining ring can be taken out and the retaining ring separated. Then, the new push rod 114 is connected to the retaining ring and inserted into the connecting hole. The claw ring 113 is tightened, and the overall installation level is measured before use.

[0026] In practical use, some of the jacking rods 114 structures or steel reinforcement workpieces are large in size, and the distance between the devices cannot fully meet the overall usage requirements. Therefore, the following improvements have been made:

[0027] The lower end of the limiting structure 2 is connected to the base 4 with a clamping platform 3. The upper end of the clamping platform 3 is fixed with a slide rail 310. The lower end of the clamping platform 210 has a sliding groove that is slidably connected to the slide rail 310. The slide rail 310 has a cavity inside, and a lead screw 311 is fixed inside it. The clamping platform 210 has a gear set 235 inside. The lower end of the gear set 235 is threadedly engaged with the lead screw 311. A handwheel 230 is rotatably connected to the side of the clamping platform 210 away from the pawl 220. The rotating shaft of the handwheel 230 is connected to the gear set 235 for driving the clamping platform 210 to move on the slide rail 310. A crank handle 231 is provided on the side of the handwheel 230 away from the clamping base 210. The crank handle 231 is rotatably connected to the handwheel 230 via a rotating shaft 234, which is used to assist the handwheel 230 in rapid rotation. The gear set 235 is arranged vertically. The upper end of the clamping base 210 has a through hole, and a limiting rod 232 is movably fitted inside the through hole. The limiting rod 232 is a right-angle rod, and a limiting seat 233 is fixed at its lower end near the gear set 235. The lower end of the limiting seat 233 has a toothed groove, which meshes with the gear set 235 to limit the rotation of the gear set 235. The upper end of the clamping platform 3 has a protective cover to protect the slide rail 310 and prevent debris from falling and affecting the lead screw 311.

[0028] When the position of the limiting structure 2 needs to be adjusted, the height of the limiting lever 232 can be raised by holding it, so that the limiting seat 233 is separated from the gear set 235. Then, the operator can drive the gear set 235 to rotate by turning the handwheel 230, and move it laterally in conjunction with the lead screw 311. After the position adjustment is completed, the limiting lever 232 can be lowered to engage the limiting seat 233 with the gear set 235, restricting its rotation, thereby fixing the position.

[0029] A limiting rod 320 is provided on the side of the clamping base 210 away from the handwheel 230. The limiting rods 320 are symmetrically arranged with reference to the axis of the hydraulic push rod structure 1. The distance between the limiting rods 320 is greater than the distance between the clamping bases 210. The clamping platform 3 has a mounting hole near the limiting rod 320. The limiting rod 320 is movably connected to the mounting hole. A fixing plate is provided on one side of the mounting hole. The inner side of the fixing plate has bolts that are detachably connected to the limiting rod 320. The limiting rod 320 is used to restrict the movement of the workpiece. The limiting rod 320 is made entirely of metal and its overall height is higher than the maximum height of the chuck 220 to prevent excessive deformation of the steel workpiece.

[0030] When in use, the operator can limit the height of the limiting rod 320 by removing and installing bolts according to the usage requirements. During the bending test, both ends of the steel bar workpiece will deflect toward the limiting rod 320. At this time, the limiting rod 320 can restrict the subsequent movement of the steel bar workpiece, thereby ensuring normal bending test and protecting the use of the hydraulic jack structure 1.

[0031] The base 4 also includes threaded connection holes 410, mounting grooves 420, and connecting seats 430. The base 4 is made of metal plate, with a protective plate fixed to its outer side. The threaded connection holes 410 are located on the inner side of the protective plate. There are multiple sets of threaded connection holes 410, arranged vertically, for fixing with bolts. The mounting grooves 420 are located on the inner side of the protective plate and between the threaded connection holes 410. The connecting seats 430 are located at the four corners of the lower end of the base 4 and are fixed by welding. The connecting seats 430 have threaded holes inside, and an adjusting seat 431 is threadedly connected to its lower end. An anti-slip plate 432 is fixed to the lower end of the adjusting seat 431. The lower end of the anti-slip plate 432 has anti-slip texture, and there are threaded holes at the four corners. Limit bolts 433 are connected to the inner side of the threaded holes for installation and fixing. The protective plate of the base 4 can be fitted with a baffle. The baffle is slidably connected through the mounting groove 420 and fixed by bolts and threaded connection holes 410, thereby providing safety protection around the device and improving the overall safety of use.

[0032] When in use, the height and balance of the base 4 can be adjusted by adjusting the seat 431 to ensure that the equipment is in a stable balanced state during testing. After positioning is completed, the operator can further improve the connection strength between the equipment and the ground by using the limit bolt 433.

[0033] The above description is only a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.

Claims

1. A reinforcing bar bending test device for quality detection of engineering, characterized in that, The system includes a hydraulic push rod structure (1), a limiting structure (2), and a base (4). The hydraulic push rod structure (1) includes a push rod mounting seat (110) and a hydraulic press (120). A push rod (114) is movably mounted inside the push rod mounting seat (110). The hydraulic press (120) is located on the side of the push rod mounting seat (110) away from the push rod (114) and is used to control the movement distance of the push rod (114). The limiting structure (2) is located on the side of the push rod mounting seat (110) away from the hydraulic press (120). There are two sets of limiting structures (2), which are symmetrically arranged with the axis of the hydraulic push rod structure (1) as a reference. The limiting structure (2) includes a clamping seat (210) and a chuck (220). The lower end of the clamping seat (210) is detachably connected to the base (4) by bolts. The clamping seat (210) has an arc notch on the side near the top rod (114). A connecting rod (221) is fixed on the side of the arc notch near the top rod (114). The inner side of the connecting rod (221) has a through hole. The pawl (220) is rotatably connected to the connecting rod (221) through the connecting shaft (223). The pawl (220) has multiple sets of staggered upper and lower pawls. The upper part of the pawl (220) has a locking protrusion (222) on the side away from the clamping seat (210) and cooperates with the groove of the lower part of the pawl (220) to limit the position and form a workpiece slot with the arc notch for fixing the workpiece position.

2. The reinforcing bar bending test device for engineering quality detection according to claim 1, characterized in that, The hydraulic jack structure (1) also includes a fixed seat (130), which is located at the lower end of the jack mounting seat (110) and is fixedly connected to the base (4) by bolts. The fixed seat (130) has a cavity inside, and the cavity contains a control module. One end of the control module has a line connected to the hydraulic press (120). The upper end of the jack mounting seat (110) is fixed with a control panel (111), and the lower end of the control panel (111) has a line connected to the control module for controlling the operation of the hydraulic press (120).

3. The reinforcing bar bending test device for engineering quality detection according to claim 2, characterized in that, A sleeve (112) is provided between the top rod mounting base (110) and the top rod (114). The sleeve (112) is directly opposite the clamping base (210). One end of the sleeve (112) is sealed and movably connected to the slot of the top rod mounting base (110). The end of the sleeve (112) near the top rod (114) has a connecting hole. A claw ring (113) is threaded to the outside of the connecting hole. The top rod (114) is sleeved and connected to the connecting hole through a snap ring and is detachably fixed by the claw ring (113).

4. The steel bar bending test device for engineering quality inspection according to claim 1, characterized in that, The lower end of the limiting structure (2) is connected to the base (4) with a clamping platform (3). The upper end of the clamping platform (3) is fixed with a slide rail seat (310). The lower end of the clamping platform (210) has a sliding groove that is slidably connected to the slide rail seat (310). The slide rail seat (310) has a cavity inside, and a lead screw (311) is fixed inside it. The clamping platform (210) has a gear set (235) inside. The lower end of the gear set (235) is threadedly connected to the lead screw (311). A handwheel (230) is rotatably connected to the side of the clamping platform (210) away from the pawl (220). The rotating shaft of the handwheel (230) is connected to the gear set (235) for driving the clamping platform (210) to move on the slide rail seat (310).

5. A steel bar bending test device for engineering quality inspection according to claim 4, characterized in that, The handwheel (230) is provided with a crank handle (231) on the side away from the clamping seat (210). The crank handle (231) is rotatably connected to the handwheel (230) through a rotating shaft (234) to assist the handwheel (230) in rapid rotation. The gear set (235) is arranged vertically. The upper end of the clamping seat (210) has a through hole. A limiting rod (232) is movably sleeved on the inner side of the through hole. The limiting rod (232) is a right-angle rod. A limiting seat (233) is fixed at its lower end near the gear set (235). The lower end of the limiting seat (233) has a tooth groove. The tooth groove meshes with the gear set (235) to limit the rotation of the gear set (235).

6. The steel bar bending test device for engineering quality inspection according to claim 5, characterized in that, The clamping base (210) is provided with a limiting rod (320) on the side away from the handwheel (230). The limiting rods (320) are symmetrically arranged with the axis of the hydraulic push rod structure (1) as the reference. The distance between the limiting rods (320) is greater than the distance between the clamping bases (210). The clamping platform (3) has a mounting hole near the limiting rod (320). The limiting rod (320) is movably connected to the mounting hole. One side of the mounting hole has a fixing plate. The inner side of the fixing plate has bolts that are detachably connected to the limiting rod (320). The limiting rod (320) is used to restrict the movement of the workpiece.

7. The steel bar bending test device for engineering quality inspection according to claim 1, characterized in that, The base (4) also includes threaded connection holes (410), mounting grooves (420) and connecting seats (430). The base (4) is made of metal plate, with a protective plate fixed on its outer side. The threaded connection holes (410) are located on the inner side of the protective plate. There are multiple sets of threaded connection holes (410), arranged vertically, for fixing with bolts. The mounting grooves (420) are located on the inner side of the protective plate and between the threaded connection holes (410). The connecting seats (430) are located at the four corners of the lower end of the base (4) and are fixed by welding. The connecting seats (430) have threaded holes inside, and an adjusting seat (431) is threaded to its lower end. An anti-slip plate (432) is fixed to the lower end of the adjusting seat (431). The anti-slip plate (432) has anti-slip texture at its lower end and threaded holes at the four corners. Limit bolts (433) are connected to the inner side of the threaded holes for installation and fixing.

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