A rigidity testing device for steel bars

Abstract

The utility model discloses a kind of rigidity testing devices for steel bar, including workbench, the top outer side of the workbench is fixedly installed with support frame, and the side of support frame is fixedly installed with control box, and the bottom of workbench is fixedly connected with support leg in symmetry;The top of the workbench is provided with adjusting mechanism, and the inner side of support frame is provided with detection assembly;Among them, the adjusting mechanism includes the bearing platform being set to the top of workbench, and the top outer side of bearing platform is symmetrically slidably connected with moving sleeve, and the top of moving sleeve is fixedly installed with fixed frame, to the effect that the both ends of fixed steel bar outside can be quickly adjusted, in turn, the phenomenon that steel bar appears in rigidity detection process can be effectively avoided to offset and jump, and staff can be flexibly adjusted according to the length and thickness of steel bar, greatly improve the flexibility when device is used, improve steel bar detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steel bar hardness testing technology, specifically a stiffness testing device for steel bars. Background Technology

[0002] Steel bars are a widely used metallic material, mainly composed of iron and carbon, and are made through specific smelting and processing processes. They have high strength, good toughness and wear resistance, and are therefore widely used in various industrial fields. Steel bars usually need to be inspected for quality before leaving the factory. The main quality inspection standards for steel bars include chemical analysis, metallographic examination, and hardness testing. Rockwell hardness is one of the important indicators for steel bar testing.

[0003] Publication number CN221925987U discloses a steel bar quality inspection device. This device uses an electrically operated telescopic rod to retract, positioning the detection head of the hardness detector directly above the steel bar on a steel bar support assembly. A hydraulic rod extends, causing the hardness detector to move downwards and perform hardness testing on the steel bar. By incorporating a steel bar support assembly, two second sliders can be slid left and right as needed to measure the required length of the steel bar, ensuring the distance between the two sliders is no greater than the required length of the steel bar. This facilitates the testing of steel bars of different lengths and increases the adaptability of the monitoring system. However, this patent still has the following problems in practical use: This device, equipped with a steel rod support assembly, allows for the testing of steel rod length by sliding two second sliders left and right, ensuring the distance between the two sliders is no greater than the required length of the steel rod. This facilitates the testing of steel rods of different lengths. However, the device only provides support and limitation on the bottom sides of the steel rod and lacks external positioning capabilities. Consequently, when the Rockwell hardness testing indenter presses against the top of the steel rod, the rod may shift or even jump out of the V-groove, significantly reducing the stability of the hardness test and affecting the testing results.

[0004] A stiffness testing device for steel bars is proposed to address the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a stiffness testing device for steel bars, in order to solve the problem mentioned in the background art. Currently, the device uses a steel bar support assembly to slide two second sliders left and right as needed to test the length of the steel bar, ensuring that the distance between the two second sliders is no greater than the length of the steel bar to be tested. This facilitates the testing of steel bars of different lengths. However, this device can only support and limit the bottom sides of the steel bar and does not have the effect of external positioning of the steel bar. As a result, when the Rockwell hardness testing indenter presses on the top of the steel bar, the steel bar may deviate or even jump out of the V-groove, which greatly reduces the stability of the steel bar hardness test.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a stiffness testing device for steel bars, comprising a workbench, a support frame fixedly installed on the top outer side of the workbench, a control box fixedly installed on one side of the support frame, and support legs symmetrically fixedly connected to the bottom of the workbench; an adjustment mechanism is provided on the top of the workbench, and a detection component is provided on the inner side of the support frame. The adjustment mechanism includes a support platform mounted on the top of the workbench. A movable sleeve is symmetrically slidably connected to the outer top of the support platform. A fixed frame is fixedly mounted on the top of the movable sleeve. A V-shaped groove is formed on the bottom inner side of the fixed frame. A first rubber pad is symmetrically embedded in the inner side of the V-shaped groove. A V-shaped block is slidably connected to the inner side of the fixed frame. A second rubber pad is symmetrically embedded in the inner side of the V-shaped block. A knob rod is threaded to the upper inner side of the fixed frame. The bottom of the knob rod is rotatably connected to the top of the V-shaped block. Slots are symmetrically formed on both sides of the support platform. Limit boxes are symmetrically embedded inside both sides of the movable sleeve. An insertion block is provided on one side of each limit box. The insertion block is inserted into the slot.

[0007] Preferably, the limiting box has a U-shaped rod slidably connected inside, and the two sides of the U-shaped rod are symmetrically sleeved with retraction springs. A push plate is fixedly connected to one side of the U-shaped rod, and the inserts are all welded to one side of the push plate.

[0008] Preferably, the top of the workbench is symmetrically fixedly connected with fixed plates, and screws are rotatably connected between the fixed plates. The support platform is disposed outside the screws and threadedly connected to the screws. A first forward and reverse motor is fixedly connected to one end of the screws.

[0009] Preferably, a limiting block is fixedly installed at the bottom of the support platform, and a limiting groove is opened at the top of the worktable. The outside of the limiting block and the inside of the limiting groove are in contact, and the limiting block and the limiting groove are slidably connected. Ball bearings are symmetrically rolled on both sides of the limiting block, and one side of the ball bearing is rolled on the inner wall of the limiting groove.

[0010] Preferably, the detection component includes an electric telescopic rod, and a detection pressure head is fixedly installed at the output end of the electric telescopic rod. A sliding box is fixedly installed on the top inner side of the support frame. A threaded rod is rotatably connected inside the sliding box, and a threaded block is threadedly connected to the outside of the threaded rod. The top of the electric telescopic rod is fixedly connected to the bottom of the threaded block, and a second forward and reverse motor is fixedly connected to one end of the threaded rod.

[0011] Preferably, a positioning rod is provided on the inner side of the U-shaped rod, and the positioning rod is clearance-fitted with the inner side of one end of the U-shaped rod.

[0012] Preferably, the outer side of the threaded block is slidably connected to the inner side of the sliding box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: A steel bar stiffness testing device is provided, specifically: When the operator rotates the knob, the V-block moves downwards. At this time, the first and second rubber pads press against the outer ends of the steel bar. Through the extension and reset properties of the spring, multiple sets of inserts are inserted into corresponding slots, thus achieving rapid adjustment and fixing of the outer ends of the steel bar. This effectively prevents the steel bar from shifting or jumping out during stiffness testing. Furthermore, the operator can flexibly adjust the device according to the length and thickness of the steel bar, greatly improving the flexibility of use and increasing the efficiency of steel bar testing. The operator activates the second forward and reverse motor, which drives the rotation of the threaded rod. The movement of the threaded block drives the movement of the electric telescopic rod. The operation of the electric telescopic rod drives the testing head to test the hardness of the top of the steel bar, thus achieving rapid adjustment of the testing head. This greatly improves the flexibility of use and facilitates subsequent loading and unloading operations of the steel bar.

[0014] By rotating the knob, the V-block moves downward, causing the first and second rubber pads to compress the outer ends of the steel bar. These pads deform under pressure. Then, by pulling the U-shaped rod, the push plate slides inside the limit box. This movement of the push plate moves multiple sets of insert blocks, compressing the two sets of springs. Releasing the U-shaped rod allows the springs to extend and reset, enabling the insert blocks to engage with their corresponding slots. This allows for quick adjustment and fixation of the steel bar's outer ends, effectively preventing displacement and slippage during stiffness testing. The operator can flexibly adjust the length and thickness of the steel bar, greatly improving the flexibility of the device and the efficiency of steel bar testing. The operator starts the first forward and reverse motor to drive the screw to rotate. The rotation of the screw drives the lateral reciprocating adjustment of the bearing platform, thereby achieving the effect of quickly adjusting the multi-point hardness test of the steel bar and further improving the flexibility of steel bar testing. The movement of the bearing platform drives the limit block to slide inside the limit groove. At this time, multiple sets of balls are rolled and connected with the inner wall of the limit groove, which greatly improves the stability of the bearing platform during movement. Moreover, the cooperation between the balls and the limit groove can reduce the resistance encountered by the bearing platform during movement. 2. The second forward and reverse motor is started by the operator to drive the rotation of the threaded rod. The rotation of the threaded rod causes the threaded block to slide inside the sliding box. The movement of the threaded block causes the electric telescopic rod to move. The operation of the electric telescopic rod drives the testing head to test the hardness of the top of the steel bar. The Rockwell hardness tester is used to test the hardness of the steel bar, thereby enabling the rapid adjustment of the testing head. This greatly improves the flexibility of the device and facilitates the subsequent loading and unloading of steel bars by the operator. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the adjustment mechanism in this utility model; Figure 3 This is a schematic side view of the overall structure of the fixed frame in this utility model; Figure 4 This is a top view of the overall structure of the limiting box in this utility model; Figure 5 This is a cross-sectional view of the overall structure of the workbench in this utility model; Figure 6 This is a cross-sectional view of the overall structure of the detection component in this utility model.

[0016] In the diagram: 1. Workbench; 101. Support frame; 102. Control box; 103. Support leg; 2. Adjustment mechanism; 201. Bearing platform; 202. Moving sleeve; 203. Fixed frame; 204. V-groove; 205. First rubber pad; 206. V-block; 207. Second rubber pad; 208. Knob rod; 209. Slot; 210. Limit box; 211. Insert block; 212. U-shaped rod; 213. Retraction spring; 214. Push plate; 215. Fixed plate; 216. Screw; 217. First forward / reverse motor; 218. Limit block; 219. Limit groove; 220. Ball bearing; 221. Positioning rod; 3. Detection assembly; 301. Electric telescopic rod; 302. Detection pressure head; 303. Sliding box; 304. Threaded rod; 305. Threaded block; 306. Second forward / reverse motor. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-6 The present invention provides a technical solution: a stiffness testing device for steel bars, including a workbench 1, a support frame 101 fixedly installed on the outer side of the top of the workbench 1, a control box 102 fixedly installed on one side of the support frame 101, and support legs 103 symmetrically fixedly connected to the bottom of the workbench 1; an adjustment mechanism 2 is provided on the top of the workbench 1, and a detection component 3 is provided on the inner side of the support frame 101. The adjustment mechanism 2 includes a support platform 201 mounted on the top of the workbench 1. A movable sleeve 202 is symmetrically slidably connected to the outer top of the support platform 201. A fixed frame 203 is fixedly mounted on the top of the movable sleeve 202. A V-groove 204 is formed on the bottom inner side of the fixed frame 203, and first rubber pads 205 are symmetrically embedded on the inner side of the V-groove 204. A V-block 206 is slidably connected to the inner side of the fixed frame 203, and second rubber pads 207 are symmetrically embedded on the inner side of the V-block 206. A knob rod 208 is threaded onto the upper inner side of the fixed frame 203, and the bottom of the knob rod 208 is rotatably connected to the top of the V-block 206. Slots 209 are symmetrically formed on both sides of the support platform 201. The moving sleeve 202 has symmetrically embedded limit boxes 210 on both sides, and each limit box 210 has a plug 211 on one side. The plug 211 is inserted into the slot 209. The limit box 210 has a U-shaped rod 212 slidably connected inside, and the U-shaped rod 212 has a symmetrically sleeved compression spring 213 on both sides. The U-shaped rod 212 has a push plate 214 fixedly connected to one side, and the plug 211 is welded to one side of the push plate 214. This allows for quick adjustment of the external ends of the fixed steel bar, effectively preventing the steel bar from shifting or jumping off during stiffness testing. The operator can also flexibly adjust the device according to the length and thickness of the steel bar, greatly improving the flexibility of the device and increasing the efficiency of steel bar testing. A fixed plate 215 is symmetrically fixedly connected to the top of the workbench 1, and a screw 216 is rotatably connected between the fixed plates 215. A support platform 201 is disposed outside the screw 216 and threadedly connected to it. A first forward / reverse motor 217 is fixedly connected to one end of the screw 216, thereby enabling rapid adjustment of the multi-point hardness detection of the steel bar and further improving the flexibility of steel bar testing. A limit block 218 is fixedly installed at the bottom of the support platform 201, and a limit groove 219 is formed at the top of the workbench 1. The outside of the limit block 218 fits against the inside of the limit groove 219, and the limit block 218 and the limit groove 219 are slidably connected. Ball bearings 220 are symmetrically rolled on both sides of the limit block 218. One side of 220 is rolled to the inner wall of the limiting groove 219. The movement of the support platform 201 drives the limiting block 218 to slide inside the limiting groove 219. At this time, multiple sets of balls 220 are rolled to the inner wall of the limiting groove 219, which greatly improves the stability of the support platform 201 when it moves. The cooperation between the balls 220 and the limiting groove 219 can reduce the resistance encountered by the support platform 201 when it moves. A positioning rod 221 is provided on the inner side of the U-shaped rod 212, and the positioning rod 221 is clearance-fitted with the inner side of one end of the U-shaped rod 212. Through the design of the positioning rod 221, the phenomenon of U-shaped rod 212 shifting or shaking due to equipment shaking or external force collision can be effectively reduced, which greatly improves the connection stability between the plug 211 and the slot 209.

[0019] The detection component 3 includes an electric telescopic rod 301, with a detection pressure head 302 fixedly installed at the output end of the electric telescopic rod 301. A sliding box 303 is fixedly installed on the top inner side of the support frame 101. A threaded rod 304 is rotatably connected inside the sliding box 303, and a threaded block 305 is threadedly connected to the outside of the threaded rod 304. The outside of the threaded block 305 is slidably connected to the inside of the sliding box 303. The top of the electric telescopic rod 301 is fixedly connected to the bottom of the threaded block 305. A second forward and reverse motor 306 is fixedly connected to one end of the threaded rod 304. This enables rapid adjustment of the detection pressure head 302, greatly improving the flexibility of the device during use and facilitating the subsequent loading and unloading of steel bars by the operators.

[0020] Working principle: Before using this steel bar stiffness testing device, it is necessary to check the overall condition of the device to ensure it can function normally. Figure 1 - Figure 6As shown, the operator first places the steel bar to be tested between the inner sides of the two sets of fixed frames 203. The power supply module inside the control box 102 supplies power to the electrical equipment, and the controller on one side of the control box 102 controls the operation of the electrical equipment. The operator slides the movable sleeve 202 outside the support platform 201 according to the length of the steel bar. Then, the operator rotates the knob rod 208, causing the V-block 206 to move downwards. At this time, the first rubber pad 205 and the second rubber pad 207 press against the outer ends of the steel bar, causing them to deform. Then, the operator pulls the U-shaped rod 212, causing the push plate 214 to slide inside the limit box 210. The movement of the push plate 214 causes the movement of multiple sets of insert blocks 211. At this time, the two sets of compression springs 213 are compressed and contracted. By releasing the U-shaped rod 212, the extension and restoring property of the compression springs 213 allows the multiple sets of insert blocks 211 to engage with the corresponding slots 209, thus achieving the effect of quickly adjusting and fixing the outer ends of the steel bar, effectively avoiding... The steel bar-free method avoids deviation and jumping during stiffness testing, and the operator can flexibly adjust the device according to the length and thickness of the steel bar, greatly improving the flexibility of the device and the efficiency of steel bar testing. By starting the first forward and reverse motor 217, the operator drives the screw 216 to rotate. The rotation of the screw 216 drives the lateral reciprocating adjustment of the support platform 201, thereby achieving the effect of quickly adjusting the multi-point hardness testing of the steel bar and further improving the flexibility of steel bar testing. The movement of the support platform 201 causes the limiting block 218 to slide inside the limiting groove 219. At this time, multiple sets of balls 220 are rolled and connected with the inner wall of the limiting groove 219, which greatly improves the stability of the support platform 201 during movement. The cooperation between the balls 220 and the limiting groove 219 reduces the resistance encountered by the support platform 201 during movement. The design of the positioning rod 221 effectively reduces the phenomenon of U-shaped rod 212 deviation and shaking caused by equipment shaking or external force collision, greatly improving the connection stability between the insert 211 and the slot 209. The second forward and reverse motor 306 is activated by the operator to drive the rotation of the threaded rod 304. The rotation of the threaded rod 304 causes the threaded block 305 to slide inside the sliding box 303. The movement of the threaded block 305 drives the movement of the electric telescopic rod 301. The operation of the electric telescopic rod 301 drives the testing head 302 to perform hardness testing on the top of the steel bar. The Rockwell hardness tester is used to test the hardness of the steel bar, thereby enabling rapid adjustment of the testing head 302. This greatly improves the flexibility of the device during use and facilitates the subsequent loading and unloading operations of the steel bars.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stiffness testing device for steel bars, comprising a workbench (1), a support frame (101) is fixedly installed on the top outer side of the workbench (1), a control box (102) is fixedly installed on one side of the support frame (101), and support legs (103) are symmetrically fixedly connected to the bottom of the workbench (1). Its features are, Also includes: The top of the workbench (1) is provided with an adjustment mechanism (2), and the inner side of the support frame (101) is provided with a detection component (3). The adjustment mechanism (2) includes a support platform (201) disposed on the top of the workbench (1), and a movable sleeve (202) is symmetrically slidably connected to the outer top of the support platform (201). A fixed frame (203) is fixedly installed on the top of the movable sleeve (202). A V-groove (204) is provided on the bottom inner side of the fixed frame (203). A first rubber pad (205) is symmetrically inlaid on the inner side of the V-groove (204). A V-block (206) is slidably connected to the inner side of the fixed frame (203). 6) The inner side is symmetrically inlaid with a second rubber pad (207), and the upper internal thread of the fixed frame (203) is connected with a knob rod (208). The bottom of the knob rod (208) is rotatably connected to the top of the V-shaped block (206). The two sides of the support platform (201) are symmetrically provided with slots (209). The two sides of the movable sleeve (202) are symmetrically inlaid with limit boxes (210). The limit boxes (210) are provided with inserts (211) on one side. The inserts (211) are inserted into the slots (209).

2. The stiffness testing device for steel bars according to claim 1, characterized in that: The limiting box (210) is internally slidably connected to a U-shaped rod (212), and the two sides of the U-shaped rod (212) are symmetrically sleeved with retraction springs (213). A push plate (214) is fixedly connected to one side of the U-shaped rod (212), and the inserts (211) are all welded to one side of the push plate (214).

3. The stiffness testing device for steel bars according to claim 1, characterized in that: The top of the workbench (1) is symmetrically fixedly connected with a fixing plate (215), and a screw (216) is rotatably connected between the fixing plates (215). The support platform (201) is located outside the screw (216) and threadedly connected to the screw (216). A first forward and reverse motor (217) is fixedly connected to one end of the screw (216).

4. The stiffness testing device for steel bars according to claim 1, characterized in that: The bottom of the support platform (201) is fixedly installed with a limiting block (218), and the top of the worktable (1) is provided with a limiting groove (219). The outside of the limiting block (218) and the inside of the limiting groove (219) are in contact, and the limiting block (218) and the limiting groove (219) are slidably connected. Both sides of the limiting block (218) are symmetrically connected with rolling balls (220), and one side of the rolling ball (220) is connected to the inner wall of the limiting groove (219).

5. The stiffness testing device for steel bars according to claim 1, characterized in that: The detection component (3) includes an electric telescopic rod (301), and a detection pressure head (302) is fixedly installed at the output end of the electric telescopic rod (301). A sliding box (303) is fixedly installed on the top inner side of the support frame (101). A threaded rod (304) is rotatably connected inside the sliding box (303). A threaded block (305) is threadedly connected to the outside of the threaded rod (304). The top of the electric telescopic rod (301) is fixedly connected to the bottom of the threaded block (305). A second forward and reverse motor (306) is fixedly connected to one end of the threaded rod (304).

6. The stiffness testing device for steel bars according to claim 2, characterized in that: A positioning rod (221) is provided on the inner side of the U-shaped rod (212), and the positioning rod (221) is in clearance fit with the inner side of one end of the U-shaped rod (212).

7. The stiffness testing device for steel bars according to claim 5, characterized in that: The threaded block (305) is slidably connected to the outside of the sliding box (303).

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