Reinforcing steel bar strength testing machine

Abstract

The utility model discloses a reinforcing steel bar strength testing machine, which relates to the field of engineering material detection and comprises a working table, a motor fixedly connected to the bottom of the working table, a gear fixedly connected to the output end of the motor, a limiting column clamped to the top of the gear, a pressure sensor clamped to the top of the gear, and a vertical plate mounted on the working table. The vertical plate is located above the gear, a steel bar is clamped between the vertical plate and the limiting column, and one side of the gear is meshed with a rack. The device has the beneficial effects that a motor of the device drives a gear to rotate, the gear rotates to drive a pressure sensor to rotate, a reinforcing steel bar is bent under the limiting action of a vertical plate and a limiting column, and the bending test of the reinforcing steel bar is completed; the gear rotates to drive the rack to move in the front-back direction to stretch the reinforcing steel bar, when the reinforcing steel bar is broken, the tension sensor can record the force borne by the reinforcing steel bar in the breaking process and record data, the stretching test of the reinforcing steel bar is completed, the device can complete the test of two different performances of the reinforcing steel bar, and the application range is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering material detection field, in particular to a steel bar strength testing machine. BACKGROUND

[0002] Steel bar tensile experiment is an important detection method in building material field, and is mainly used for determining the mechanical performance index of steel bar in reinforced concrete structure. Through steel bar tensile experiment, the key indexes such as strength, deformation performance and fracture characteristics of steel bar can be known, thereby providing important basis for structure design.

[0003] For example, the patent document with the announcement number CN220473250U discloses a one-way tensile strength testing device of steel bar, which comprises a frame, a mounting plate fixedly connected to the inner wall of the frame, a hydraulic cylinder fixedly installed on the side wall of the mounting plate, a push plate fixedly connected to the output end of the hydraulic cylinder, a chuck fixedly connected to the left inner wall of the push plate and the frame respectively, a water tank fixedly connected to the top surface of the frame close to the left side, heating assemblies symmetrically arranged on the inner side of the frame, and two spraying assemblies arranged on the side wall of the water tank. According to the technical scheme, the steel bar can be heated to a specified temperature according to the model and application field of the steel bar, and then a pulling force is applied to the steel bar. By judging the tensile strength data of the steel bar at different temperatures, the strength coefficient of the steel bar affected by temperature can be accurately analyzed. Meanwhile, the cooling assembly can also be used to detect the tensile strength of the steel bar when it is rapidly cooled after being heated, so as to further improve the accuracy of the data of the tensile strength of the steel bar.

[0004] However, the device can only test the tensile performance of the steel bar. If more comprehensive strength test of the steel bar is needed, other devices have to be replaced, which increases the test cost and has a small practical range. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the above -mentioned problem and provides a steel bar strength testing machine.

[0006] The utility model realizes the above-mentioned purpose through the following technical scheme:

[0007] A steel bar strength testing machine, including the workbench, the bottom of workbench is fixedly connected with motor, the output of motor is fixedly connected with gear, the top of gear is clamped with the limit post, the top of gear is clamped with pressure sensor, and the workbench is installed with vertical board, and the vertical board is located above gear, and the vertical board and limit post are clamped with steel bar, and the side of gear is engaged with rack, and the side away from gear of rack is provided with tensile mechanism, and the rear top of workbench is provided with clamping mechanism, and the rear top of workbench is provided with protection mechanism, and the rear of workbench is fixedly connected with tensile force sensor, and the extension end of tensile force sensor is hung with the rear of rack.

[0008] Preferably, a plurality of assembly holes are formed on the gear, the plurality of assembly holes are arranged in a rectangular array, and the limiting column and the pressure sensor are clamped on the gear through the assembly holes.

[0009] Preferably, two adjusting plates are fixedly connected to the workbench, the two adjusting plates are located on the front and rear sides of the gear, a plurality of fixing holes are formed in the adjusting plates, and a mounting plate is arranged on the adjusting plate.

[0010] Preferably, the stretching mechanism comprises a stretching sliding groove, the stretching sliding groove is formed on one side of the workbench, the rack is slidably connected to the top of the workbench through the stretching sliding groove, a fixing block is fixedly connected to the side, away from the gear, of the rack, the fixing block is connected with a moving block through bolts, and the opposite surfaces of the fixing block and the moving block are both C-shaped.

[0011] Preferably, the clamping mechanism comprises a fixed plate, the fixed plate is fixedly connected to the top rear side of the workbench, a clamping sliding groove is formed on the top rear side of the workbench, a clamping block is slidably connected to the inner surface of the clamping sliding groove, a threaded rod is threadedly connected to the bottom of the clamping block, the threaded rod is rotatably connected to the inside of the clamping sliding groove, and a knob is fixedly connected to the side, away from the center of the workbench, of the threaded rod.

[0012] Preferably, the protection mechanism comprises a protection cover, the protection cover is hingedly connected to the rear side of the workbench, a handle is fixedly connected to the top of the protection cover, a snap ring is fixedly connected to the front side of the protection cover, a clamping groove is formed on the top front side of the workbench, the outer surface of the snap ring and the inner surface of the clamping groove are matched, and an observation window is fixedly connected to the outer surface of the protection cover.

[0013] Beneficial effects lie in that the motor drives the gear to rotate, the gear drives the pressure sensor to rotate, the reinforcing steel bar is bent under the limiting action of the vertical plate and the limiting column, and the bending test of the reinforcing steel bar is completed; the gear drives the rack to move in the front-rear direction, the reinforcing steel bar is stretched, the force sensor records the force borne when the reinforcing steel bar is broken and records data, and the stretching test of the reinforcing steel bar is completed; the device can complete the test on two different performances of the reinforcing steel bar, and the practical range is enhanced.

[0014] The additional technical features and advantages of the device will be more obvious in the following description, or can be understood through the specific practice of the device. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide a further understanding of the device, and constitute a part of the specification, and are used to explain the device together with the following specific embodiments, but do not constitute a limitation on the device. In the drawings:

[0016] Figure 1 is a main body top view structure diagram of the reinforcing steel strength testing machine;

[0017] Figure 2 This is a bottom view of the main structure of the steel bar strength testing machine described in this utility model;

[0018] Figure 3 This is a top view of the workbench structure of the steel bar strength testing machine described in this utility model;

[0019] Figure 4 This is a top view of the workbench of the rebar strength testing machine of the present invention, showing the rebar in a bent state.

[0020] Figure 5 This utility model describes a steel bar strength testing machine. Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 6 This utility model describes a steel bar strength testing machine. Figure 1 Enlarged structural diagram at point B in the middle.

[0022] The reference numerals in the attached drawings are explained as follows: 1. Workbench; 201. Motor; 202. Gear; 203. Assembly hole; 204. Limiting post; 205. Pressure sensor; 206. Rack; 301. Adjusting plate; 302. Fixing hole; 303. Mounting plate; 304. Vertical plate; 401. Tension slide; 402. Fixing block; 403. Moving block; 501. Fixing plate; 502. Clamping slide; 503. Clamping block; 504. Threaded rod; 505. Knob; 601. Protective cover; 602. Handle; 603. Snap ring; 604. Snap groove; 605. Observation window; 7. Reinforcing bar; 8. Tension sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1-6As shown, a kind of steel strength testing machine, including workbench 1, the bottom of workbench 1 is fixedly connected with motor 201, the output of motor 201 is fixedly connected with gear 202, the top of gear 202 is clamped with limit post 204, the top of gear 202 is clamped with pressure sensor 205, vertical plate 304 is installed on workbench 1, vertical plate 304 is located above gear 202, steel bar 7 is clamped between vertical plate 304 and limit post 204, start motor 201 to drive gear 202 rotation, gear 202 rotation drives pressure sensor 205 to rotate, due to the limiting effect of vertical plate 304 and limit post 204, steel bar 7 will be bent, pressure sensor 205 will record and transmit the force suffered by steel bar 7 when yielding to remote device, gear 202 one side is engaged with rack 206, rack 206 away from the side of gear 202 is provided with stretching mechanism, the rear top of workbench 1 is provided with clamping mechanism, the rear top of workbench 1 is provided with protection mechanism, the rear side of workbench 1 is fixedly connected with tension sensor 8, the working principle of tension sensor 8 is equivalent to spring scale in prior art, the extension end of tension sensor 8 is hung with the rear side of rack 206.

[0027] Gear 202 is provided with a plurality of assembly holes 203, a plurality of assembly holes 203 are distributed in rectangular array, limit post 204 and pressure sensor 205 are clamped on gear 202 by assembly hole 203, and different sizes of limit post 204 and pressure sensor 205 can be selected and replaced for different sizes of steel bar 7.

[0028] Two adjusting plates 301 are fixedly connected on workbench 1, two adjusting plates 301 are located on the front and rear sides of gear 202, a plurality of fixing holes 302 are formed in adjusting plate 301, mounting plate 303 is arranged on adjusting plate 301, the other end of mounting plate 303 is fixedly connected with vertical plate 304, different sizes of mounting plate 303 can also be selected and replaced for different sizes of steel bar 7, and fixed through fixing hole 302.

[0029] Stretching mechanism includes stretching sliding groove 401, stretching sliding groove 401 is formed in one side of workbench 1, rack 206 is slidingly connected on the top of workbench 1 by stretching sliding groove 401, fixed block 402 is fixedly connected on the side of rack 206 away from gear 202, moving block 403 is connected with fixed block 402 by bolt, the opposite surfaces of fixed block 402 and moving block 403 are C-shaped, the design of C-shaped can be more fitted to the outer surface of steel bar 7, so that the fixing effect is better.

[0030] The clamping mechanism comprises a fixed plate 501 fixedly connected to the top rear side of the workbench 1, the top rear side of the workbench 1 is provided with a clamping sliding groove 502, the inner surface of the clamping sliding groove 502 is slidably connected with a clamping block 503, the bottom of the clamping block 503 is threadedly connected with a threaded rod 504, the threaded rod 504 is rotatably connected in the interior of the clamping sliding groove 502, and one side of the threaded rod 504 away from the center of the workbench 1 is fixedly connected with a knob 505, so that the knob 505 can be more conveniently screwed to the clamping block 503.

[0031] The protection mechanism comprises a protective cover 601 which can effectively prevent the broken and splashing reinforcing bars 7 from hurting the operator, the protective cover 601 is hingedly connected to the rear side of the workbench 1, the top of the protective cover 601 is fixedly connected with a handle 602, the front side of the protective cover 601 is fixedly connected with a clamping ring 603, the top front side of the workbench 1 is provided with a clamping groove 604, the outer surface of the clamping ring 603 is matched with the inner surface of the clamping groove 604, when the protective cover 601 falls down, the clamping ring 603 is clamped into the clamping groove 604 to limit the protective cover 601, and the outer surface of the protective cover 601 is fixedly connected with an observation window 605, so that the testing process of the reinforcing bars 7 can be observed at any time through the observation window 605.

[0032] Working principle: when the device is used, if the bending performance of the reinforcing bars 7 needs to be tested, firstly, the limiting column 204 and the pressure sensor 205 are clamped into the corresponding assembly holes 203, then the mounting plate 303 and the vertical plate 304 are fixedly connected to the adjusting plate 301, subsequently, the reinforcing bars 7 are clamped between the vertical plate 304 and the limiting column 204, the motor 201 is started to drive the gear 202 to rotate, the gear 202 rotates to drive the pressure sensor 205 to rotate, and due to the limiting action of the vertical plate 304 and the limiting column 204, the reinforcing bars 7 are bent, and the pressure sensor 205 records the force borne by the reinforcing bars 7 when the reinforcing bars 7 yield and transmits the force to a remote device.

[0033] If the tensile performance of the reinforcing bars 7 needs to be tested, firstly, the reinforcing bars 7 are penetrated through the clamping mechanism and the protection mechanism, then the bolts on the moving block 403 are screwed, the one end of the reinforcing bars 7 is fixed between the moving block 403 and the fixed block 402, subsequently, the knob 505 is rotated, the knob 505 rotates to drive the threaded rod 504 to rotate, thereby driving the clamping block 503 to move on the surface of the workbench 1, the reinforcing bars 7 are fixed between the clamping block 503 and the fixed plate 501, the complete fixing of the reinforcing bars 7 is completed, subsequently, the motor 201 is started to drive the gear 202 to rotate, the gear 202 rotates to drive the rack 206 to move in the front-rear direction, the reinforcing bars 7 are stretched, when the reinforcing bars 7 are broken, the tension sensor 8 hung with the rack 206 can record the force borne by the reinforcing bars 7 when the reinforcing bars 7 are broken in real time, and the data is recorded and transmitted to a remote device.

[0034] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A steel bar strength testing machine, comprising a worktable (1), characterized in that: A motor (201) is fixedly connected to the bottom of the workbench (1). A gear (202) is fixedly connected to the output end of the motor (201). A limit post (204) is engaged with the top of the gear (202). A pressure sensor (205) is engaged with the top of the gear (202). A vertical plate (304) is installed on the workbench (1). The vertical plate (304) is located above the gear (202). The vertical plate (304) and the limit post (205) are connected together. 4) A steel bar (7) is clamped between them. A rack (206) meshes with one side of the gear (202). A tensioning mechanism is provided on the side of the rack (206) away from the gear (202). A clamping mechanism is provided on the top rear side of the workbench (1). A protective mechanism is provided on the top rear side of the workbench (1). A tension sensor (8) is fixedly connected to the rear side of the workbench (1). The extension end of the tension sensor (8) is hooked to the rear side of the rack (206).

2. The steel bar strength testing machine according to claim 1, characterized in that: The gear (202) has a plurality of mounting holes (203) arranged in a rectangular array. The limiting post (204) and the pressure sensor (205) are engaged with the gear (202) through the mounting holes (203).

3. The steel bar strength testing machine according to claim 1, characterized in that: Two adjusting plates (301) are fixedly connected to the workbench (1). The two adjusting plates (301) are located on the front and rear sides of the gear (202). Several fixing holes (302) are opened on the adjusting plates (301). An mounting plate (303) is provided on the adjusting plates (301). A vertical plate (304) is fixedly connected to the other end of the mounting plate (303).

4. A steel bar strength testing machine according to claim 1, characterized in that: The stretching mechanism includes a stretching slide (401) which is formed on one side of the workbench (1). The rack (206) is slidably connected to the top of the workbench (1) through the stretching slide (401). A fixed block (402) is fixedly connected to the side of the rack (206) away from the gear (202). A movable block (403) is bolted to the fixed block (402). The opposing surfaces of the fixed block (402) and the movable block (403) are both C-shaped.

5. A steel bar strength testing machine according to claim 1, characterized in that: The clamping mechanism includes a fixed plate (501), which is fixedly connected to the rear top of the workbench (1). A clamping groove (502) is provided on the rear top of the workbench (1). A clamping block (503) is slidably connected to the inner surface of the clamping groove (502). A threaded rod (504) is threadedly connected to the bottom of the clamping block (503). The threaded rod (504) is rotatably connected inside the clamping groove (502). A knob (505) is fixedly connected to the side of the threaded rod (504) away from the center of the workbench (1).

6. A steel bar strength testing machine according to claim 1, characterized in that: The protective mechanism includes a protective cover (601), which is hinged to the rear side of the workbench (1). A handle (602) is fixedly connected to the top of the protective cover (601), and a retaining ring (603) is fixedly connected to the front side of the protective cover (601). A slot (604) is provided on the front top side of the workbench (1). The outer surface of the retaining ring (603) and the inner surface of the slot (604) are adapted to each other. An observation window (605) is fixedly connected to the outer surface of the protective cover (601).

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