A column strength testing device and method of use thereof

Abstract

The application discloses a kind of column strength testing device and its using method, the device includes: test operating platform, with bottom plate and the two vertical walls being arranged at both ends of bottom plate;Two clamping components are respectively slidably arranged on two vertical walls, for clamping the two ends of the column to be measured;Compression strength test component cooperates with two clamping components, at least including the pressing block provided with pressure sensor and the laser displacement sensor being arranged directly below pressing block, for measuring the pressure and deformation that the column to be measured bears;Anti-torsion test component is rotatably connected with one end of the column to be measured, for measuring the torsional force that the column to be measured receives, wherein the other end of the column to be measured is fixed;Strain gauge fixing component cooperates with anti-torsion test component, and is connected with the column to be measured, for measuring the deformation generated after the column to be measured receives torsional force.The measurement result of the embodiment of the application is accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile column strength testing, and particularly relates to a column strength testing device and a use method thereof. BACKGROUND

[0002] The column is an important supporting structure of the automobile body structure, for example, the automobile b column can play a role in enhancing the body stiffness and protecting the passengers in the vehicle.

[0003] The existing column strength testing device has a structure for clamping and fixing the two ends of the column, which cannot be moved. When the column is pressed downward to measure the degree of deformation, the column may be less bent and deformed downward due to the tight fixing of the two ends, thus leading to inaccurate measurement results. When the column is twisted to test its mechanical strength, one end of the column needs to be rotated. If the power arm is small, it will be more laborious to rotate.

[0004] Therefore, overcoming the defects of the prior art is a technical problem urgently to be solved in the technical field. SUMMARY

[0005] In view of the above problems, the present application provides a column strength testing device and a use method thereof.

[0006] The object of the present application can be achieved by the following scheme:

[0007] In a first aspect, the present application provides a column strength testing device for compression strength testing and torsion testing, comprising:

[0008] A test operation table having a bottom plate and two vertical walls arranged at both ends of the bottom plate;

[0009] Two clamping assemblies are respectively and slidably arranged on the two vertical walls for clamping two ends of the column to be tested;

[0010] A compression strength testing assembly cooperates with the two clamping assemblies and at least includes a pressing block provided with a pressure sensor and a laser displacement sensor arranged directly below the pressing block, for measuring the bearing pressure and deformation of the column to be tested;

[0011] A torsion testing assembly is rotationally connected to one end of the column to be tested for measuring the torsional force received by the column to be tested, wherein the other end of the column to be tested is fixed;

[0012] A strain gauge fixing assembly cooperates with the torsion testing assembly and is connected to the column to be tested for measuring the deformation of the column to be tested after receiving the torsional force.

[0013] Further, the clamping assembly comprises an upper fixed clamping plate, a lower fixed clamping plate, a non-slip pad and a sliding block.

[0014] The upper fixed clamping plate and the lower fixed clamping plate are connected by screws and nuts, the inner wall of the side of the lower fixed clamping plate facing the upper fixed clamping plate is provided with an anti-skid pad, and the outer wall of the side of the lower fixed clamping plate away from the upper fixed clamping plate is provided with a sliding block.

[0015] Further, the two vertical walls are provided with sliding grooves matched with the sliding blocks.

[0016] Further, the longitudinal section shape of the sliding block is inverted T-shaped.

[0017] Further, the compression strength test assembly further comprises a supporting column, a hydraulic telescopic rod, a reinforcing corner block and a fixing column.

[0018] The supporting column comprises a vertical column and a horizontal column, the reinforcing corner block is arranged at the connection position of the vertical column and the horizontal column, and the vertical column is arranged on the bottom plate; the hydraulic telescopic rod is arranged on the horizontal column, and the pressing block is connected to the lower portion of the hydraulic telescopic rod.

[0019] The fixing column is arranged below the pressing block, the laser displacement sensor is arranged on the fixing column, and the vertical central axis of the laser displacement sensor is arranged to coincide with the vertical central axis of the pressing block.

[0020] Further, the torsion test assembly comprises a fixing block, a rotating shaft, a first power rod, a second power rod, a torque sensor and a connecting shaft.

[0021] The rotating shaft is rotatably connected to the inside of the fixing block, one end of the rotating shaft is fixedly connected to the first power rod, the outside of the first power rod is connected to the second power rod, the other end of the rotating shaft is provided with the torque sensor, and the side of the torque sensor is connected to the connecting shaft.

[0022] Further, the first power rod is arranged perpendicularly to the rotating shaft, and the fixing block is arranged on one of the vertical walls of the test operation table.

[0023] Further, the two ends of the to-be-tested column are provided with fixing clamps, one end of the to-be-tested column is fixedly connected to the fixing clamps arranged on the other vertical wall opposite to the fixing block, and the other end of the to-be-tested column is fixedly connected to the connecting shaft.

[0024] Further, the strain gauge fixing assembly comprises a deformation measurement strain gauge, a terminal, a wire, a strain meter, a buckle and a protective pad.

[0025] The deformation measuring strain gauge is arranged on the column to be measured, the end of the deformation measuring strain gauge is connected with the terminal, the terminal is electrically connected with the lead wire, and the lead wire is electrically connected with the strain gauge.

[0026] In the second aspect, the application provides a use method of a column strength testing device, which is used in the column strength testing device of any one of the first aspect, and the use method comprises:

[0027] In the compression strength test of the column, two clamping assemblies respectively fix two ends of the column, the pressing block of the compression strength testing assembly moves downward to press the column, the middle position of the column is bent downward, and the pressure sensor and the laser displacement sensor respectively measure the bearing pressure and deformation of the column;

[0028] In the torsion strength test of the column, one end of the column is fixed, the other end is rotationally connected with the torsion test assembly, the torsion test assembly twists the other end of the column, and the torsion test assembly and the strain gauge fixing assembly respectively measure the torsional force borne by the column and the deformation generated after the column is twisted

[0029] Compared with the prior art, the application has the following beneficial effects:

[0030] (1) By arranging the column clamping assembly, the two ends of the column are clamped and fixed, and the column clamping assembly is slidably arranged on the vertical wall of the test operation table, when the middle position of the column is bent downward under pressure, the clamping assembly can slide to the middle, without affecting the inward contraction of the two ends of the column, thereby not affecting the bending degree of the column, and not affecting the measurement result, so that the measurement result is accurate;

[0031] (2) The compression strength testing assembly is arranged, the pressing block moves downward to press the column downward, and the pressure sensor and the laser displacement sensor cooperate with each other to measure the bearing pressure and the deformation degree of the column in real time, so that the operator can calculate and analyze the compression strength of the column according to the obtained data;

[0032] (3) The torsion test assembly is arranged to rotate one end of the column, and the torque sensor is arranged, so as to facilitate the measurement of the torsional force borne by the column, the total length of the first power rod and the second power rod can be adjusted by rotating the second power rod, so as to facilitate the extension of the power arm of the tester when rotating the rotating shaft, and to facilitate the saving of strength;

[0033] (4) The strain gauge fixing assembly is arranged, the strain gauge is used for measuring the deformation of the column after the column is subjected to the torsion force, the buckle is used for fixing the lead wire, and the protective pad made of insulating material is arranged between the lead wire and the column body, so that the lead wire is prevented from being in contact with the metal column body to cause short circuit;

[0034] (5) The column strength testing device can perform compression strength test and torsion strength test, has high integration and saves space.

[0035] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0037] Figure 1 It is a perspective structural schematic view of a column strength testing device from one view angle provided in the embodiments of the present application;

[0038] Figure 2 It is a perspective structural schematic view of a column strength testing device from another view angle provided in the embodiments of the present application;

[0039] Figure 3 It is a perspective structural schematic view of a clamping assembly provided in the embodiments of the present application;

[0040] Figure 4 It is a perspective structural schematic view of a compression strength testing assembly provided in the embodiments of the present application;

[0041] Figure 5 It is a perspective structural schematic view of a torsion test assembly provided in the embodiments of the present application;

[0042] Figure 6 It is a perspective structural schematic view of a strain gauge fixing assembly provided in the embodiments of the present application;

[0043] In the figure, 1, test operation platform; 2, clamping assembly; 3, compressive strength test assembly; 4, torsion test assembly; 5, strain gauge fixing assembly; 6, fixed clamp; 201, upper fixed clamp plate; 202, circular hole; 203, screw; 204, nut; 205, lower fixed clamp plate; 206, non-slip pad; 207, sliding block; 301, support column; 302, hydraulic telescopic rod; 303, reinforcing angle block; 304, pressing block; 305, pressure sensor; 306, laser displacement sensor; 307, fixed column; 401, fixed block; 402, rotating shaft; 403, first power rod; 404, second power rod; 405, torque sensor; 406, connecting shaft; 501, column; 502, deformation measurement strain gauge; 503, terminal; 504, wire; 505, strain gauge; 506, buckle; 507, protective pad. DETAILED DESCRIPTION

[0044] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0045] Embodiment one

[0046] The embodiment one of the present application provides a column strength test device, which comprises:

[0047] The test operation platform 1 has a bottom plate and two vertical walls arranged at both ends of the bottom plate;

[0048] The two clamping assemblies 2 are respectively slidably arranged on the two vertical walls and used for clamping two ends of a column to be tested;

[0049] The compressive strength test assembly 3 cooperates with the two clamping assemblies 2 and at least comprises a pressing block 304 provided with a pressure sensor 305 and a laser displacement sensor 306 arranged directly below the pressing block 304, and is used for measuring the bearing pressure and deformation of the column to be tested;

[0050] The torsion test assembly 4 is rotationally connected with one end of the column to be tested and is used for measuring the torsion force received by the column to be tested, wherein the other end of the column to be tested is fixed;

[0051] The strain gauge fixing assembly 5 cooperates with the torsion test assembly and is connected with the column to be tested, and is used for measuring the deformation of the column to be tested after the column to be tested receives the torsion force.

[0052] The structural features and working principles of the column strength testing device will be described in detail below in combination with the accompanying drawings. It should be noted that the column in the embodiment of the present application can be exemplified by an automobile a-pillar or b-pillar.

[0053] In combination with the accompanying drawings Figure 1 and Figure 3 The two clamping assemblies 2 are used to clamp and fix the two ends of the column, and each clamping assembly 2 comprises an upper fixed clamping plate 201, a lower fixed clamping plate 205, an anti-skid pad 206 and a sliding block 207.

[0054] Two screws 203 are symmetrically arranged on the lower fixed clamping plate 205, and a circular hole 202 corresponding to the screws 203 is arranged on the upper fixed clamping plate 201, and the diameter of the circular hole 202 is slightly larger than the outer diameter of the screw 203. The upper fixed clamping plate 201 and the lower fixed clamping plate 205 are connected by the screw 203 and the nut 204, and the diameter of the circular hole 202 is slightly smaller than the outer diameter of the nut 204. The upper fixed clamping plate 201 and the screw 203 form a sliding structure through the circular hole 202. The upper fixed clamping plate 201 and the lower fixed clamping plate 205 cooperate with each other to facilitate clamping and fixing the column.

[0055] The anti-skid pad 206 is arranged on the inner wall of the side of the lower fixed clamping plate 205 facing the upper fixed clamping plate 201, for enhancing the fixing effect of the column. The sliding block 207 is arranged on the outer wall of the side of the lower fixed clamping plate 205 away from the upper fixed clamping plate 201, and the lower fixed clamping plate 205 and the test operation table 1 form a sliding structure through the sliding block 207. Correspondingly, a sliding groove matching the sliding block 207 is arranged on each of the two vertical walls of the test operation table 1. In a specific embodiment, the longitudinal section shape of the sliding block 207 is inverted “T” shape, and the longitudinal section shape of the sliding groove is also inverted “T” shape. When the two clamping assemblies 2 clamp the two ends of the column, the middle position of the column is bent downward under pressure, the lower fixed clamping plate 205 can slide to the middle position through the sliding block 207, without affecting the inward contraction of the two end portions of the column, and thus without affecting the bending degree of the column, so as not to affect the measurement result.

[0056] In combination with the accompanying drawings Figure 2 and Figure 4 The compression strength testing assembly 3 is used in cooperation with the two clamping assemblies 2 to apply pressure to the column and measure the bearing pressure and deformation of the column to be measured. The compression strength testing assembly 3 comprises a supporting column 301, a hydraulic telescopic rod 302, a reinforcing angle block 303, a pressing block 304, a pressure sensor 305, a laser displacement sensor 306 and a fixed column 307.

[0057] The support column 301 comprises upright columns and transverse columns, the junctions of which are provided with reinforcing corner blocks 303, the longitudinal section of the reinforcing corner blocks 303 is a right-angled triangle, and the upright columns are arranged on the bottom plate of the test operation table 1; the transverse columns are provided with hydraulic telescopic rods 302, the lower ends of the hydraulic telescopic rods 302 are connected with pressing blocks 304, the pressing blocks 304 are provided with pressure sensors 305 at the positions in contact with the column to be tested; fixed columns 307 are arranged below the pressing blocks 304, the fixed columns 307 are provided with laser displacement sensors 306, and the vertical central axes of the laser displacement sensors 306 are arranged in coincidence with the vertical central axes of the pressing blocks 304. The pressing blocks 304 and the support column 301 constitute a lifting structure through the hydraulic telescopic rods 302, the pressing blocks 304 can move downward through the hydraulic telescopic rods 302, thereby facilitating the downward pressing of the column, and meanwhile, the pressure sensors 305 and the laser displacement sensors 306 cooperate with each other to measure the bearing pressure and the deformation degree of the column in real time, and then the operating personnel can calculate and analyze the compressive strength of the column according to the obtained data.

[0058] With reference to the accompanying drawings Figure 1 and Figure 5 The anti-torsion test assembly 4 is rotationally connected with one end of the column to be tested, and is used for torsion of the column to be tested and measurement of the torsional force borne by the column to be tested, wherein the other end of the column to be tested is fixed. The anti-torsion test assembly 4 comprises a fixed square block 401, a rotating shaft 402, a first power rod 403, a second power rod 404, a torque sensor 405 and a connecting shaft 406; the rotating shaft 402 is rotationally connected inside the fixed square block 401, one end of the rotating shaft 402 is fixedly connected with the first power rod 403, the outside of the first power rod 403 is connected with the second power rod 404, the other end of the rotating shaft 402 is provided with the torque sensor 405, and the torque sensor 405 is connected with the connecting shaft 406 at the side. Further, the first power rod 403 is arranged perpendicularly to the rotating shaft 402, and the fixed square block 401 is arranged on one of the vertical walls of the test operation table 1.

[0059] With reference to the accompanying drawings Figure 1 The two ends of the column are provided with fixed clamps 6, one end of the column is fixedly connected with a fixed clamp 6 arranged on the other vertical wall opposite to the fixed square block 401, and the other end of the column is fixedly connected with the connecting shaft 406. The fixed clamp 6 comprises an upper clamp block and a lower clamp block, and the two are also connected by screws and nuts, and an antiskid pad is arranged on the lower clamp block to enhance the fixing effect of the column, and the upper clamp block and the lower clamp block are used for clamping the column. In order to ensure that the two ends of the column are at the same height after being connected with the anti-torsion test assembly 4, a fixed pad is arranged below the fixed clamp 6 of the column fixed on the other vertical wall opposite to the fixed square block 401.

[0060] In the anti-torsion test assembly 4, by rotating the first power rod 403, the column can be twisted, and the torque sensor 405 measures the torsional force on the column. By rotating the second power rod 404, the total length of the first power rod 403 and the second power rod 404 can be adjusted, thereby facilitating the extension of the power arm of the tester when rotating the rotating shaft 402, thereby saving effort. The first power rod 403 and the second power rod 404 are connected by threads.

[0061] The working principle of the torque sensor 405 is mainly based on the bridge principle of the strain gauge. In the torque sensor 405, the strain gauge is attached to the elastic shaft to measure the strain of the elastic shaft. When the elastic shaft is subjected to torque, the strain gauge will sense the strain and generate a change in resistance. These resistance changes will be connected to the bridge, and the bridge will generate a voltage signal proportional to the torque. This voltage signal can be further processed and recorded to measure the torque.

[0062] The working principle of the strain gauge is to use the physical and geometric properties of the conductor. When a conductor is stretched within its elastic limit, it will not be broken or permanently deformed, but will become narrower and longer. This deformation causes the end resistance to increase. Conversely, when a conductor is compressed, it will become wider and shorter. This deformation causes the end resistance to decrease. By measuring the resistance of the strain gauge, the strain of the covered area can be calculated.

[0063] In combination with the drawings of the specification Figure 1 and Figure 6 The strain gauge fixing assembly 5 is used in cooperation with the anti-torsion test assembly 4 and is connected to the column to be tested for measuring the deformation of the column to be tested after being subjected to torsional force. The strain gauge fixing assembly 5 includes a deformation measuring strain gauge 502, a terminal 503, a wire 504, a strain meter 505, a buckle 506, and a protective pad 507. The deformation measuring strain gauge 502 is arranged on the column 501, and the end of the deformation measuring strain gauge 502 is connected to the terminal 503. The terminal 503 is electrically connected to the wire 504, and the wire 504 is electrically connected to the strain meter 505. The protective pad 507 is arranged on the column 501, and the buckle 506 is clamped on the protective pad 507, and the buckle 506 is arranged at equal intervals on the protective pad 507. The strain meter 505 is arranged on the vertical wall opposite the anti-torsion test assembly 4 of the test operation table 1.

[0064] In combination with the drawings of the specification Figure 6The bottom of the column body 501 is connected with a deformation measuring strain gauge 502 by gluing, the material of the protective pad 507 is rubber material, the protective pad 507 is connected with the column body 501 by gluing, and the deformation measuring strain gauge 502 can be used to measure the deformation degree of the column body 501 after being subjected to a torsional force. The buckle 506 is used to fix the wire 504, and the protective pad 507 made of insulating material is arranged between the wire 504 and the column body 501, so that the wire 504 can be prevented from being in direct contact with the metal column body 501 to cause short circuit.

[0065] In combination with the embodiment of the present application, the working principle of the column compression strength test is described.

[0066] When the column compression strength test is performed, the two ends of the column are placed on the lower fixed clamping plates 205 on the two sides, the circular holes 202 at the end of the upper fixed clamping plate 201 are aligned with the screws 203, and the upper fixed clamping plate 201 is slid down to the bottom of the column, and the bottom of the nut 204 is tightly pressed against the upper fixed clamping plate 201, so that the ends of the column are clamped and fixed between the upper fixed clamping plate 201 and the lower fixed clamping plate 205. Then the hydraulic telescopic rod 302 is started, and the hydraulic telescopic rod 302 moves downward with the pressing block 304 to press the column. When the middle position of the column is pressed and bent downward, the two ends of the column will move to the middle position, and the sliding block 207 will slide inward at the same time. The pressure sensor 305 installed in the pressing block 304 can test the pressure borne by the column, and the bottom laser displacement sensor 306 can test the distance of the middle position of the column moving downward, so as to reflect the degree of bending downward of the column under different pressures, and the compression strength of the column can be analyzed.

[0067] In combination with the embodiment of the present application, the working principle of the column compression strength test is described.

[0068] When the torsional strength test is carried out on the column, the two ends of the column 501 are clamped and fixed inside the two fixed clamps 6, the deformation measuring strain gauge 502 is pasted on the bottom of the column body 501 by using glue, the terminal 503 is connected on the end of the deformation measuring strain gauge 502, the protective pad 507 is pasted on the bottom of the column body 501 by using glue, and the wire 504 is welded on the end of the terminal 503. Then the second power rod 404 is screwed outwards. Since the second power rod 404 is in threaded connection with the first power rod 403, the total length of the second power rod 404 and the first power rod 403 can be adjusted by screwing the second power rod 404. Then the end of the second power rod 404 is held and rotated. The rotation of the second power rod 404 drives the rotating shaft 402 to rotate inside the fixed block 401 through the first power rod 403. Since the other end of the column 501 is fixed, the torsional force of the column 501 can be measured by rotating one end of the column 501. The torque sensor 405 installed on the end of the rotating shaft 402 can measure the size of the torsional force of the column. At the same time, the deformation measuring strain gauge 502 pasted on the bottom of the column 501 can measure the deformation degree of the column 501 after being subjected to the torsional force. The size of the force and the degree of deformation can be used to analyze the strength of the column body 501 against the torsional force.

[0069] The column strength testing device provided by the embodiment one of the present application has at least the following beneficial effects:

[0070] (1) The column clamping assembly is arranged to clamp and fix the two ends of the column, and is slidably arranged on the vertical wall of the test operation table. When the middle position of the column is bent downward under pressure, the clamping assembly can slide to the middle position, without affecting the inward contraction of the two ends of the column, so as to not affect the bending degree of the column, and not affect the measurement result.

[0071] (2) The compression strength testing assembly is arranged. The column is pressed downward by the downward movement of the pressing block. The compression strength testing assembly and the laser displacement sensor are cooperated with each other to measure the bearing pressure and the deformation degree of the column in real time. Then the operator can calculate and analyze the compression strength of the column according to the obtained data.

[0072] (3) The torsional test assembly is arranged to rotate one end of the column. The torque sensor is arranged to measure the torsional force of the column. The total length of the first power rod and the second power rod can be adjusted by rotating the second power rod, so as to increase the power arm of the tester when rotating the rotating shaft, and to save the effort.

[0073] (4) The strain gauge fixing assembly is arranged, the strain gauge is used for measuring the deformation of the column after the column is subjected to the torsion force, the buckle is used for fixing the lead wire, and the protective pad made of insulating material is arranged between the lead wire and the column body, so that the lead wire is prevented from being in contact with the metal column body and causing short circuit;

[0074] (5) The column strength testing device can perform compression strength test and torsion strength test, has high integration and saves space.

[0075] Embodiment Two

[0076] The application provides a use method of the column strength testing device, and the use method is used for the column strength testing device provided in the application embodiment one, and the use method comprises the following steps:

[0077] When the compression strength test is performed on the column, the two clamping assemblies respectively fix the two ends of the column, the pressing block of the compression strength test assembly moves downward to press the column, the middle position of the column is bent downward, and the pressure sensor and the laser displacement sensor respectively measure the bearing pressure and deformation of the column.

[0078] When the torsion strength test is performed on the column, one end of the column is fixed, the other end is rotationally connected with the torsion test assembly, the strain gauge fixing assembly is connected with the column, the torsion test assembly twists the other end of the column, and the torsion test assembly and the strain gauge fixing assembly respectively measure the torsion force borne by the column and the deformation of the column after the column is twisted.

[0079] Although the application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently, and the modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A column strength testing apparatus for compressive strength testing and torsional testing, characterized by, The utility model relates to a kind of test operation platform and its test method, including: Test operation platform (1) with bottom plate and two vertical walls being arranged at both ends of bottom plate; Two clamping components (2) are respectively slidably arranged on two vertical walls, for clamping two ends of the column to be tested; Compression strength test component (3) cooperates with two clamping components (2), at least including pressing block (304) provided with pressure sensor (305) and laser displacement sensor (306) arranged directly below pressing block (304), for measuring the pressure and deformation of the column to be tested; Anti-torsion test component (4) is rotatably connected with one end of the column to be tested, for measuring the torsional force of the column to be tested, wherein the other end of the column to be tested is fixed; Strain gauge fixing component (5) cooperates with anti-torsion test component (4) and is connected with the column to be tested, for measuring the deformation of the column to be tested after being subjected to torsional force; The clamping component (2) includes an upper fixed clamping plate (201), a lower fixed clamping plate (205), a non-slip pad (206), and a sliding block (207); The upper fixed clamping plate (201) and the lower fixed clamping plate (205) are connected by screws (203) and nuts (204), the inner wall of the side of the lower fixed clamping plate (205) facing the upper fixed clamping plate (201) is provided with a non-slip pad (206), and the outer wall of the side of the lower fixed clamping plate (205) facing away from the upper fixed clamping plate (201) is provided with a sliding block (207); The compression strength test component (3) further includes a support column (301), a hydraulic telescopic rod (302), a reinforcing corner block (303), and a fixed column (307); The support column (301) includes a vertical column and a horizontal column, the reinforcing corner block (303) is arranged at the connection between the vertical column and the horizontal column, and the vertical column is arranged on the bottom plate; the horizontal column is provided with the hydraulic telescopic rod (302), and the lower part of the hydraulic telescopic rod (302) is connected with the pressing block (304); The fixed column (307) is arranged below the pressing block (304), the fixed column (307) is provided with the laser displacement sensor (306), and the vertical central axis of the laser displacement sensor (306) coincides with the vertical central axis of the pressing block (304); The anti-torsion test component (4) includes a fixed block (401), a rotating shaft (402), a first power rod (403), a second power rod (404), a torque sensor (405), and a connecting shaft (406); The rotating shaft (402) is rotatably connected inside the fixed block (401), one end of the rotating shaft (402) is fixedly connected with the first power rod (403), the outside of the first power rod (403) is connected with the second power rod (404), the other end of the rotating shaft (402) is provided with the torque sensor (405), and the side of the torque sensor (405) is connected with the connecting shaft (406).

2. The column strength testing apparatus of claim 1, wherein, Two vertical walls are provided with sliding grooves matched with the sliding blocks (207).

3. The column strength testing apparatus of claim 2, wherein, The longitudinal section shape of the sliding block (207) is inverted "T" shape.

4. The column strength testing apparatus of claim 1, wherein, The first power rod (403) is vertically arranged with the rotating shaft (402), and the fixed block (401) is arranged on one of the vertical walls of the test operation table (1).

5. The column strength testing apparatus of claim 4, wherein, The two ends of the to-be-tested column are provided with fixing clamps (6), one end of the to-be-tested column is fixed on the other vertical wall opposite to the fixed block (401), and the other end of the to-be-tested column is fixedly connected with the connecting shaft (406).

6. The column strength testing apparatus of claim 5, wherein, The strain gauge fixing assembly (5) comprises a deformation measuring strain gauge (502), a wiring terminal (503), a wire (504), a strain gauge (505), a buckle (506) and a protective pad (507). The deformation measuring strain gauge (502) is arranged on the to-be-tested column, the end of the deformation measuring strain gauge (502) is connected with the wiring terminal (503), the wiring terminal (503) is electrically connected with the wire (504), and the wire (504) is electrically connected with the strain gauge (505); wherein the protective pad (507) is arranged on the to-be-tested column, and the buckle (506) is clamped on the protective pad (507).

7. A method of using a column strength testing apparatus for use in a column strength testing apparatus as claimed in any one of claims 1 to 6, characterised by, The use method comprises: When the compressive strength of the column is tested, two clamping assemblies respectively fix the two ends of the column, the pressing block of the compressive strength testing assembly moves downward to press the column, the middle position of the column is bent downward, and the pressure sensor and the laser displacement sensor respectively measure the bearing pressure and deformation of the column; When the torsional strength of the column is tested, one end of the column is fixed, the other end is rotationally connected with the torsional testing assembly, the torsional testing assembly twists the other end of the column, and the torsional testing assembly and the strain gauge fixing assembly respectively measure the torsional force and the deformation generated after the column is twisted.

Images