Concrete compression testing machine

Abstract

The utility model relates to the technical field of concrete detection, and discloses a concrete compression testing machine which comprises a testing machine body, the testing machine body is provided with a working table for placing concrete, the upper surface of the working table is provided with a protective cover capable of adjusting the size, and the working table is provided with a pressure measuring plate capable of moving up and down towards the working table. The lower surface of the pressure measuring plate right faces a cover opening of the protective cover, the protective cover is internally provided with a protective space for placing concrete of different sizes, and the pressure measuring plate can be inserted into the protective space. When concrete is broken, the concrete is protected by the protective cover, so that the influence of the concrete on the safety of detection personnel in the breaking process can be reduced, and the detection safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of concrete detection, and specifically relates to a concrete compression testing machine. BACKGROUND

[0002] With the vigorous development of China's construction industry, various performance concrete needs to be used on the market. After the processing of concrete is completed, the performance of the concrete usually needs to be detected in the laboratory. In the process of detecting the compressive performance of the concrete, a compression testing machine is usually used.

[0003] In the detection process, the processed concrete bottom is placed on the workbench of the compression testing machine, the operating table of the compression testing machine is adjusted, the pressure hammer of the compression testing machine is allowed to fall, the pressure hammer is pressed on the top of the concrete during the falling process, and the pressure is gradually increased until the surface of the concrete is broken, the pressure on the surface of the concrete is stopped, and the display value of the compression testing machine is recorded.

[0004] According to the related technology in the above, the inventor believes that the pressure hammer of the compression testing machine will splash in the process of crushing the concrete, which will affect the safety of the detection personnel. UTILITY MODEL CONTENTS

[0005] The utility model intends to provide a concrete compression testing machine, which can reduce the impact of the concrete on the safety of the detection personnel in the process of crushing and improve the safety of detection.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] 1) A concrete compression testing machine, comprising a testing machine body, the testing machine body has a workbench for placing concrete, the upper surface of the workbench has a protective cover capable of adjusting the size, the workbench has a pressure plate moving upward and downward toward the workbench, the lower surface of the pressure plate is opposite to the cover opening of the protective cover, the protective cover has a protective space for placing different sizes of concrete, and the pressure plate can be inserted into the protective space.

[0008] By adopting the above technical scheme, in use, the size of the protective space of the protective cover is adjusted according to different sizes of concrete, so that different sizes of concrete can be placed in the protective space of the protective cover; then, the pressure plate is driven to run toward the protective space, an acting force is applied to the concrete in the protective space, until the surface of the concrete is broken, the pressure on the surface of the concrete is stopped, and the testing machine body records the display value of the compression; in this process, the broken concrete is protected by the protective cover, which can reduce the impact of the concrete on the safety of the detection personnel in the process of breaking and improve the safety of detection.

[0009] 2) The concrete compression testing machine according to 1), wherein:

[0010] The protective cover comprises two first protective plates arranged in the axial direction of the workbench and two second protective plates arranged in the radial direction of the workbench, the two first protective plates are arranged opposite to each other and can move away from or close to each other under the drive of the first driving structure, and the two second protective plates are arranged opposite to each other and can move away from or close to each other under the drive of the second driving structure, so that the side edges of the two first protective plates and the second protective plates are connected to each other to form a rectangular frame structure.

[0011] According to the first driving structure in the above technical scheme, the two first protective plates can be driven to move close to each other in the axial direction of the workbench, and at the same time, the second driving structure can drive the two second protective plates to move close to each other in the radial direction of the workbench, in the process of moving close to each other of the first protective plates and the second protective plates, gradually contact the side surface of the concrete, and clamp the side of the concrete, and when the concrete is stable, the first protective plates and the second protective plates protect the broken concrete, reduce the influence of the broken concrete on the safety of the tester, and improve the safety of the test.

[0012] 3) The concrete compression testing machine according to 2), wherein:

[0013] The first driving structure comprises a strip-shaped slot opened on the workbench top surface, a second lead screw is placed in the strip-shaped slot, a second servo motor is coaxially connected to the end of the second lead screw, two second nut sleeves are threadedly connected to the second lead screw, and the two second nut sleeves correspond to the two first protective plates respectively, each second nut sleeve is embedded in the bottom of the first protective plate, and the bottom of the protective plate extends into the strip-shaped slot.

[0014] According to the second servo motor driving the second lead screw to rotate in the above technical scheme, in the process of rotating, the second lead screw and the second nut sleeve cooperate to realize the conversion of the rotational motion of the second lead screw into the linear motion of the second nut sleeve, so that the second nut sleeve drives the first protective plates to move close to or away from each other in the direction of the strip-shaped slot.

[0015] 4) The concrete compression testing machine according to 2), wherein:

[0016] The workbench is provided with a support frame for supporting the pressure plate, and the second driving structure is arranged on the support frame, the second driving structure comprises bolts threadedly connected on both sides of the support frame, the ends of the two oppositely arranged bolts abut against the side surfaces of the second protective plates respectively, and the bottom of the second protective plate slides along the top surface of the workbench.

[0017] By adopting the technical scheme, the bolt can be adjusted according to the size requirement of the concrete, the bolt passes through the two sides of the support frame and abuts against the side surface of the second protective plate, thereby pushing the second protective plate to slide along the tabletop of the workbench and making the two second protective plates close to each other, and when the second protective plates are away from each other, the bolt only needs to be away from the second protective plate, and the second protective plates can be directly moved by the tester to make the two second protective plates away from each other, thereby adapting to different sizes of concrete.

[0018] 5) The concrete compression test machine according to 4), wherein:

[0019] The tabletop of the workbench is provided with a sliding groove in a strip shape, and the sliding groove is provided with two sliding blocks sliding along the axial direction of the sliding groove, and each sliding block is fixedly connected with the bottom of the corresponding second protective plate.

[0020] By adopting the technical scheme, the sliding block is fixedly connected with the bottom of the corresponding second protective plate to support the second protective plate, and the sliding cooperation between the two sliding blocks and the sliding groove enables the second protective plate to slide along the axial direction of the sliding groove, so that the two second protective plates can be close to or away from each other to adapt to different sizes of concrete.

[0021] 6) The concrete compression test machine according to 4), wherein:

[0022] The support frame comprises two support rods fixed on the tabletop of the workbench, and the two support rods are provided with a moving rod sliding up and down along the height direction thereof, the upper surface of the moving rod is provided with a third driving structure for driving the moving rod to slide downward, the lower surface of the moving rod is connected with a connecting rod perpendicular to the moving rod, and the end of the connecting rod away from the moving rod is connected with the pressure plate.

[0023] By adopting the technical scheme, the third driving structure drives the moving rod to slide downward, and during the sliding process of the moving rod, the moving rod is connected with the pressure plate through the connecting rod, thereby enabling the pressure plate to move downward along the height direction thereof, so that the pressure plate can perform pressure test on the concrete in the protective cover, and meanwhile, the safety of the tester is ensured when the pressure plate performs test in the protective cover, and the safety of the test is improved.

[0024] 7) The concrete compression test machine according to 6), wherein:

[0025] The top portions of the two support rods are connected with a support plate for supporting the third driving structure, the side surfaces of the two support rods are respectively provided with a sliding groove opened along the height direction thereof, and the two ends of the moving rod are respectively fixed with a moving block embedded into the sliding groove.

[0026] The cooperation of the chute and the moving block realizes the up-down sliding of the moving rod along the height direction, and the support plate supports the third driving structure, thereby ensuring the stability of the up-down sliding of the moving rod.

[0027] 8) The concrete compression test machine according to 6), wherein:

[0028] The third driving structure comprises a first servo motor fixed on the support plate, the output shaft of the first servo motor is coaxially connected with a first screw rod facing the moving rod, the side of the moving rod facing the first screw rod is provided with a mounting hole, and a first nut sleeve is mounted in the mounting hole and sleeved on the first screw rod.

[0029] The first servo motor drives the first screw rod to rotate, and the cooperation of the first screw rod and the first nut sleeve realizes the conversion of the rotary motion of the first screw rod into the linear motion of the first nut sleeve, so that the first nut sleeve drives the moving rod to move up and down along the height thereof, thereby driving the up-down movement of the pressure plate.

[0030] Compared with the prior art, the utility model still has the following technical effects:

[0031] The protective cover is arranged on the test machine body, the concrete is covered by the detection personnel, the test machine body performs the pressure test on the concrete, the safety of the detection personnel is not affected in the process of the fragmentation of the concrete, and the safety of the detection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural schematic view of the utility model concrete compression test machine;

[0033] Figure 2 It is a structural schematic view of the operation between the protective cover and the workbench of the utility model concrete compression test machine. DETAILED DESCRIPTION

[0034] The following is further described in detail through specific embodiments:

[0035] The reference signs in the drawings of the specification comprise: workbench 1, support rod 2, moving rod 3, pressure plate 4, support plate 5, first servo motor 6, first screw rod 7, connecting rod 8, first protective plate 9, second protective plate 10, bolt 11, second servo motor 12, second screw rod 13 and second nut sleeve 14.

[0036] Embodiment, see Figure 1 and Figure 2The concrete compression testing machine in the embodiment comprises a testing machine body, the testing machine body has a workbench 1 for placing concrete, the upper surface of the workbench 1 has a size-adjustable protective cover, the workbench 1 has a pressure plate 4 moving up and down towards the workbench 1, the lower surface of the pressure plate 4 is opposite to the cover opening of the protective cover, the protective cover has a protective space for placing different sizes of concrete, and the pressure plate 4 can be inserted into the protective space.

[0037] According to the technical scheme, in use, the size of the protective space of the protective cover is adjusted according to different sizes of concrete, so that the different sizes of concrete can be placed in the protective space of the protective cover; then, the pressure plate 4 is driven to run towards the protective space, an acting force is applied to the concrete in the protective space, and when the surface of the concrete is broken, the pressure on the surface of the concrete is stopped, and the testing machine body records the display value of the compression; in this process, the broken concrete is protected by the protective cover, the safety of the detection personnel is reduced in the process of breaking, and the safety of detection is improved.

[0038] Referring to Figure 2 More specifically, the protective cover comprises two first protective plates 9 arranged in the axial direction of the workbench 1 and two second protective plates 10 arranged in the radial direction of the workbench 1, the two first protective plates 9 are arranged opposite to each other and can move away from or close to each other under the drive of the first driving structure, the two second protective plates 10 are arranged opposite to each other and can move away from or close to each other under the drive of the second driving structure, and the side edges of the two first protective plates 9 and the second protective plates 10 are connected to each other to form a rectangular frame structure.

[0039] According to the technical scheme, the first driving structure can drive the two first protective plates 9 to move close to each other in the axial direction of the workbench 1, and the second driving structure can drive the two second protective plates 10 to move close to each other in the radial direction of the workbench 1, in the process of moving close to each other of the first protective plates 9 and the second protective plates 10, the first protective plates 9 and the second protective plates 10 gradually contact the side surface of the concrete and clamp the side surface of the concrete, and the first protective plates 9 and the second protective plates 10 protect the broken concrete when the concrete is tested under compression, reduce the safety influence of the broken concrete on the detection personnel in the process of breaking, and improve the safety of detection.

[0040] The first driving structure comprises a strip-shaped groove opened on the table top of the workbench 1, a second lead screw 13 is placed in the strip-shaped groove, a second servo motor 12 is coaxially connected to the end of the second lead screw 13, two second nut sleeves 14 are threadedly connected to the second lead screw 13, the two second nut sleeves 14 correspond to the two first protective plates 9 respectively, each second nut sleeve 14 is embedded in the bottom of the first protective plate 9, and the bottom of the protective plate extends into the strip-shaped groove.

[0041] By adopting the technical scheme, the second servo motor 12 drives the second screw rod 13 to rotate, and the second screw rod 13 and the second nut sleeve 14 cooperate to convert the rotary motion of the second screw rod 13 into the linear motion of the second nut sleeve 14, so that the second nut sleeve 14 drives the first protective plate 9 to move towards or away from each other along the direction of the strip-shaped groove.

[0042] In addition, the workbench 1 is provided with a support frame for supporting the pressure plate 4, and the second driving structure is arranged on the support frame. The second driving structure includes two bolts 11 threadedly connected on both sides of the support frame. The ends of the two oppositely arranged bolts 11 respectively abut against the side surfaces of the second protective plate 10, and the bottom of the second protective plate 10 slides along the tabletop of the workbench 1.

[0043] By adopting the technical scheme, the bolt 11 can be adjusted according to the size requirements of the concrete. The bolt 11 passes through the two sides of the support frame and abuts against the side surface of the second protective plate 10, thereby pushing the second protective plate 10 to slide along the tabletop of the workbench 1 and making the two second protective plates 10 move towards each other. When the two second protective plates 10 move away from each other, the tester only needs to move the second protective plate 10 to make the two second protective plates 10 move away from each other, thereby adapting to different sizes of concrete.

[0044] More specifically, the tabletop of the workbench 1 is provided with a long strip-shaped sliding groove, and the sliding groove has two sliding blocks that slide along the axis direction of the sliding groove. Each sliding block is fixedly connected with the bottom of the corresponding second protective plate 10. By adopting the technical scheme, the sliding block is fixedly connected with the bottom of the corresponding second protective plate 10 to support the second protective plate 10. At the same time, the sliding cooperation between the two sliding blocks and the sliding groove enables the second protective plate 10 to slide along the axis direction of the sliding groove, and the two second protective plates 10 move towards or away from each other to adapt to the detection of concrete of different sizes.

[0045] More specifically, the support frame includes two support rods 2 fixed on the tabletop of the workbench 1, and a moving rod 3 that slides up and down along the height direction between the two support rods 2. The upper surface of the moving rod 3 is provided with a third driving structure for driving the moving rod 3 to slide up and down. The lower surface of the moving rod 3 is connected with a connecting rod 8 perpendicular to the moving rod 3, and the end of the connecting rod 8 away from the moving rod 3 is connected with the pressure plate 4.

[0046] By adopting the third driving structure in the technical scheme, the moving rod 3 is driven to slide downwards, and the moving rod 3 is connected with the pressure plate 4 through the connecting rod 8 in the sliding process. In the embodiment, the connecting rod 8 has a hollow structure and can pass through the first screw rod 7, and the length of the first screw rod 7 can allow the pressure plate 4 to perform the pressure test on the concrete, so as to realize the downward movement of the pressure plate 4 along the height direction thereof, so that the pressure plate 4 can perform the pressure test on the concrete in the protective cover, and meanwhile, the safety of the detection personnel can be ensured when the pressure plate 4 performs the test in the protective cover, and the safety of the detection can be improved.

[0047] The top of the two supporting rods 2 opposite to each other is connected with a supporting plate 5 for supporting the third driving structure, and the side of the two supporting rods 2 opposite to each other is respectively provided with a sliding groove opened along the height direction thereof, and the two ends of the moving rod 3 are respectively fixed with moving blocks embedded into the sliding grooves. By adopting the cooperation of the sliding grooves and the moving blocks in the technical scheme, the moving rod 3 can slide up and down along the height direction, and the supporting plate 5 supports the third driving structure, so as to ensure the stability of the upward and downward sliding of the moving rod 3.

[0048] Meanwhile, the third driving structure comprises a first servo motor 6 fixed on the supporting plate 5, the output shaft of the first servo motor 6 is coaxially connected with a first screw rod 7 towards the moving rod 3, the side of the moving rod 3 towards the first screw rod 7 is provided with a mounting hole, and a first nut sleeve is mounted in the mounting hole and sleeved on the first screw rod 7.

[0049] By adopting the first servo motor 6 in the technical scheme to drive the first screw rod 7 to rotate, the first screw rod 7 is cooperated with the first nut sleeve to realize the conversion of the rotary motion of the first screw rod 7 into the linear motion of the first nut sleeve, so that the first nut sleeve drives the moving rod 3 to move up and down along the height direction thereof, thereby driving the upward and downward movement of the pressure plate 4.

[0050] The protective cover is arranged on the testing machine body, so that the detection personnel can cover the concrete, the testing machine body can perform the pressure test on the concrete, the safety of the detection personnel can be ensured in the process of the fragmentation of the concrete, and the safety of the detection can be improved.

[0051] The above is only the embodiment of the utility model, and the well-known specific technical schemes and / or common knowledge in the scheme are not described in detail. It should be noted that, for those skilled in the art, without departing from the technical scheme of the utility model, a plurality of deformations and improvements can be made, which should also be regarded as the protection range of the utility model, and these will not affect the effect and practicability of the utility model. The protection range claimed in the application should be subject to the content of the claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A concrete compression testing machine characterized by, The utility model provides a concrete testing machine, which comprises a machine body, a workbench for placing concrete, an upper surface of the workbench having a size-adjustable protective cover, a pressure plate on the workbench moving up and down towards the workbench, a lower surface of the pressure plate facing a cover opening of the protective cover, the protective cover having a protective space for placing concrete of different sizes, and the pressure plate being capable of being inserted into the protective space.

2. A concrete compression testing machine as claimed in claim 1 wherein: The protective cover comprises two first protective plates arranged in the axial direction of the workbench and two second protective plates arranged in the radial direction of the workbench, the two first protective plates being arranged opposite to each other and being capable of moving away from or close to each other under the action of a first driving structure, and the two second protective plates being arranged opposite to each other and being capable of moving away from or close to each other under the action of a second driving structure, so that the side edges of the two first protective plates and the two second protective plates are connected to each other to form a rectangular frame structure.

3. A concrete compression testing machine as claimed in claim 2 wherein: The first driving structure comprises a strip-shaped slot formed in the workbench top surface, a second screw rod arranged in the strip-shaped slot, a second servo motor coaxially connected to the end of the second screw rod, and two second nut sleeves threadedly connected to the second screw rod, the two second nut sleeves corresponding to the two first protective plates respectively, each second nut sleeve being embedded in the bottom of the first protective plate, and the bottom of the protective plate extending into the strip-shaped slot.

4. The concrete compression testing machine of claim 2, wherein: The workbench is provided with a support frame for supporting the pressure plate, and the second driving structure is arranged on the support frame, the second driving structure comprising bolts threadedly connected to the two sides of the support frame, the ends of the two oppositely arranged bolts abutting against the side surfaces of the second protective plates, and the bottom of the second protective plate sliding along the top surface of the workbench.

5. A concrete compression testing machine as claimed in claim 4 wherein: The top surface of the workbench is provided with a long strip-shaped sliding groove, and the sliding groove has two sliding blocks sliding along the axial direction of the sliding groove, each sliding block being fixedly connected to the bottom of the corresponding second protective plate.

6. A concrete compression testing machine as claimed in claim 4 wherein: The support frame comprises two support rods fixed to the top surface of the workbench, a moving rod sliding up and down along the height direction of the two support rods, a third driving structure arranged on the upper surface of the moving rod for driving the moving rod to slide up and down, a connecting rod connected to the lower surface of the moving rod and perpendicular to the moving rod, and the end of the connecting rod away from the moving rod being connected to the pressure plate.

7. A concrete compression testing machine as claimed in claim 6 wherein: The top portions of the two support rods opposite to each other are connected to a support plate for supporting the third driving structure, and the side surfaces of the two support rods opposite to each other are provided with sliding grooves formed along the height direction of the support rods, and the two ends of the moving rod are respectively fixedly connected to moving blocks embedded in the sliding grooves.

8. A concrete compression testing machine as claimed in claim 6 wherein: The third driving structure comprises a first servo motor fixed to the support plate, a first screw rod coaxially connected to the output shaft of the first servo motor and facing the moving rod, a mounting hole formed in the side surface of the moving rod facing the first screw rod, and a first nut sleeve mounted in the mounting hole and sleeved on the first screw rod.

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