Portable concrete compression resistance testing equipment

Abstract

The invention relates to the technical field of pressure testing, in particular to portable concrete pressure resistance testing equipment which comprises a top plate, a base and connecting rods, the top plate and the base are fixedly connected through at least two connecting rods, and a clamping plate, a base plate and a mounting plate are sequentially arranged between the top plate and the base from top to bottom; the clamping plate, the base plate and the mounting plate are slidably connected to the connecting rod, a pressure sensor is mounted in the center of the mounting plate, a hydraulic driving device is placed on the base plate, and a concrete test block is placed on the clamping plate. The hydraulic driving device pushes the clamping plate to move upwards, so that a concrete test block is clamped between the clamping plate and the top plate to be extruded and acts on the pressure sensor at the bottom in the form of counter-acting force, and the concrete test block is subjected to a compressive resistance test. The device is simple in structure, convenient to disassemble, assemble and carry, low in cost and high in practicability, and can be used for efficiently carrying out field testing and ensuring the testing precision at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of pressure testing, and in particular to a portable concrete pressure resistance testing device. Background Art

[0002] Concrete strength is one of the important indicators for measuring concrete quality. The strength of concrete is usually tested by performing a pressure test on the concrete. When performing a pressure test on concrete, the concrete needs to be made into concrete test blocks first, and then the compression test equipment is used to test the compression performance of the concrete test blocks.

[0003] Existing concrete pressure testing equipment is mostly fixed, making it difficult to move to the site for testing. Concrete blocks must be brought back for testing, reducing testing efficiency. Furthermore, most high-precision concrete pressure testing equipment is complex and expensive, making it difficult to promote and use. Summary of the Invention

[0004] In view of the technical problems existing in the prior art, the purpose of the present invention is to provide a portable concrete pressure resistance testing device, which has a simple structure, is easy to disassemble and assemble, and is easy to carry. It can efficiently perform on-site testing while ensuring test accuracy, and has low cost and strong practicality.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A portable concrete pressure resistance testing device includes a top plate, a base and connecting rods. The top plate and the base are connected and fixed by at least two connecting rods. A clamping plate, a pad and a mounting plate are arranged between the top plate and the base from top to bottom. The clamping plate, the pad and the mounting plate are all slidably connected to the connecting rods. A pressure sensor is installed at the center of the mounting plate, a hydraulic drive device is placed on the pad, and a concrete test block is placed on the clamping plate.

[0007] Furthermore, the top plate and the base are connected and fixed by four connecting rods, which are double-headed screws. The smooth rod diameter of the double-headed screw is larger than the diameter of the threaded end. Through holes are provided at the four corners of the top plate and the base. The through hole diameters of the top plate and the base are larger than the diameter of the threaded end and smaller than the residual smooth rod diameter. The two threaded ends of the double-headed screw pass through the through holes of the top plate and the base respectively and are fixed by nuts.

[0008] Furthermore, semicircular bayonet holes are provided at the four corners of the splint, the pad and the mounting plate, and the splint, the pad and the mounting plate are all slidably connected to the polished rod of the double-headed screw through the semicircular bayonet holes.

[0009] Furthermore, a mounting hole is provided at the center of the mounting plate, the pressure sensor is mounted in the mounting hole, and the pressure sensor is electrically connected to an external display through a circuit.

[0010] Furthermore, the hydraulic driving device includes a hydraulic jack, which is placed in the middle of the backing plate and connected to an external hydraulic pump through an oil pipe.

[0011] Furthermore, a square limiting groove is provided on the upper surface of the clamping plate, and the concrete test block is placed in the limiting groove.

[0012] Furthermore, a limiting block is also provided on the double-headed screw, and the limiting block is located between the clamping plate and the backing plate.

[0013] Furthermore, a plurality of limiting holes are evenly provided on the double-headed screw, and a semi-circular bayonet and a pin hole are provided on the limiting block. The limiting block is slidably clamped on the double-headed screw through the semi-circular bayonet and fixed on the double-headed screw through a pin.

[0014] Furthermore, foot supports are provided at the four corners of the base, and fixing holes are opened at the bottoms of the foot supports.

[0015] Generally speaking, the present invention has the following advantages:

[0016] First, the present invention provides power for the hydraulic jack through a hydraulic pump, drives the piston rod of the hydraulic jack to eject upward, and pushes the clamping plate to move upward, so that the concrete test block is clamped between the clamping plate and the top plate for extrusion, and acts on the pressure sensor at the bottom in the form of a reaction force to perform a compressive strength test on the concrete test block; the data of the pressure sensor is displayed through a display, which is convenient for real-time monitoring of the pressure data.

[0017] Second, the present invention adopts the combination of a double-headed screw and a nut, which can quickly disassemble and assemble the top plate, base, clamping plate, backing plate, mounting plate and limiting block, facilitating storage and packing. The overall equipment is convenient to carry, improving the portability and mobility of the testing equipment. There is no need to bring the concrete block back, and the testing equipment can be moved to the site for testing, improving the testing efficiency.

[0018] Third, the present invention uses a low-cost hydraulic jack to replace expensive hydraulic loading equipment. While ensuring the testing accuracy, it greatly reduces the equipment input cost, is more compact and portable, safe and reliable, has simple detection operations, low cost, and is convenient for popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention.

[0020] Figure 2 is a schematic structural diagram of the present invention from another perspective.

[0021] Figure 3 is a schematic structural diagram of the pressure sensor of the present invention.

[0022] Among them, 1 is a connecting rod, 2 is a nut, 3 is a clamping plate, 4 is a limiting groove, 5 is a limiting hole, 6 is a limiting block, 7 is a backing plate, 8 is a mounting plate, 9 is a foot support, 10 is a base, 11 is a top plate, 12 is a semi-circular bayonet, 13 is a hydraulic jack, 14 is a pressure sensor, 15 is a fixing hole, 16 is an oil pipe, 17 is a hydraulic pump, 18 is a pin hole, 19 is a mounting hole, and 20 is a circuit. Specific embodiments

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Combined with Figure 1 and Figure 2 As shown, a portable concrete compressive strength testing device includes a top plate, a base, and a connecting rod. The top plate and the base are fixedly connected by at least two connecting rods. A clamping plate, a backing plate, and a mounting plate are sequentially arranged from top to bottom between the top plate and the base. The clamping plate, the backing plate, and the mounting plate are all slidably connected to the connecting rod. A pressure sensor is installed at the center of the mounting plate, a hydraulic driving device is placed on the backing plate, and a concrete test block is placed on the clamping plate.

[0025] Combined with Figure 1 and Figure 2 As shown, specifically, the top plate and the base are fixedly connected by four connecting rods. The connecting rod is a double-headed screw rod. The diameter of the smooth rod of the double-headed screw rod is greater than the diameter of the threaded end. Through holes are provided at the four corners of the top plate and the base. The diameter of the through holes of the top plate and the base is greater than the diameter of the threaded end and less than the diameter of the smooth rod. The two threaded ends of the double-headed screw rod respectively pass through the through holes of the top plate and the base and are fixed by nuts. The connecting rod adopts a double-headed screw rod, the diameter of the smooth rod of the double-headed screw rod > the diameter of the threaded end, the diameter of the threaded end < the diameter of the through holes of the top plate and the base < the diameter of the smooth rod, which makes the installation of the top plate and the base convenient and fast, and the top plate will not slide down, and the top plate can be limited.

[0026] Combined with Figure 1 and Figure 2 As shown, specifically, semi-circular bayonets are provided at the four corners of the clamping plate, the backing plate, and the mounting plate. The clamping plate, the backing plate, and the mounting plate are all slidably clamped on the smooth rod of the double-headed screw rod through the semi-circular bayonets. By providing semi-circular bayonets, the installation and movement of the clamping plate, the backing plate, and the mounting plate are convenient.

[0027] Combined with Figures 1 to 3 As shown, specifically, a mounting hole is provided at the center of the mounting plate. The pressure sensor is installed in the mounting hole. The pressure sensor is electrically connected to an external display through a circuit. Through the display, the pressure change situation during the crushing process of the concrete test block can be intuitively seen. In this embodiment, the pressure sensor adopts a torsion ring type pressure sensor, which has the characteristics of high precision, high stability, and high reliability, and can ensure the accuracy of the concrete test block compressive strength test.

[0028] Combined with Figure 1 and Figure 2 As shown, specifically, the hydraulic drive device includes a hydraulic jack, which is placed in the middle of the backing plate. The hydraulic jack is connected to an external hydraulic pump through an oil pipe. In this embodiment, the hydraulic jack is a split-type hydraulic jack, and the hydraulic pump is an electric hydraulic pump. The electric hydraulic pump provides power for the hydraulic jack, drives the piston rod of the hydraulic jack to push out upward, and pushes the clamping plate upward, so that the concrete test block is clamped between the clamping plate and the top plate for extrusion. To save costs, a manual hydraulic pump can also be used as the hydraulic pump.

[0029] Combined with Figure 1 and Figure 2 As shown, specifically, a square limit groove is provided on the upper surface of the clamping plate, and the concrete test block is placed in the limit groove. By setting the limit groove, the concrete test block can be limited to prevent it from shifting during the extrusion process.

[0030] Combined with Figure 1 and Figure 2 As shown, in this embodiment, a limit block is also provided on the double-headed screw, and the limit block is located between the clamping plate and the backing plate. A plurality of limit holes are evenly provided on the double-headed screw. The limit block is provided with a semi-circular bayonet and a pin hole. The limit block is slidably clamped on the double-headed screw through the semi-circular bayonet and fixed on the double-headed screw through a pin. That is, the limit block is slidably clamped on the smooth rod of the double-headed screw through the semi-circular bayonet, and the pin passes through the pin hole on the limit block and the limit hole on the double-headed screw to fix the limit block on the double-headed screw. By setting the limit block, the clamping plate can be limited to prevent the clamping plate from slipping down and pressing on the hydraulic jack. A plurality of limit holes are evenly provided on the double-headed screw, and the position of the limit block can be adjusted according to the height of the hydraulic jack to adapt to hydraulic jacks of various specifications.

[0031] Combined with Figure 1 and Figure 2 As shown, specifically, foot supports are provided at the four corners of the base, and fixing holes are opened at the bottoms of the foot supports. By setting the foot supports, the stability of the base can be improved. At the same time, long screws can be used to pass through the fixing holes to fix the foot supports on the fixing frame or the ground to prevent the base from shifting or shaking, greatly improving the stability of the entire device.

[0032] The working principle of the present invention is as follows:

[0033] Assembly: First, pass four double-headed screws through the through-holes of the bottom plate and tighten and fix them with nuts. Then, slide the mounting plate and the backing plate downward from the top of the double-headed screws and sleeve them on the smooth rods of the double-headed screws. Next, sleeve the limit blocks and the clamping plates. Then, sleeve the top plate on the threaded end at the top of the double-headed screws and tighten and fix it with nuts. Then, install the pressure sensor in the mounting hole. According to the height of the hydraulic jack, fix the limit block on the double-headed screw by passing a pin through the pin hole on the limit block and the limit hole on the double-headed screw to limit the clamping plate. Then, place the hydraulic jack on the backing plate, connect the hydraulic jack to an external electric hydraulic pump through a oil pipe, and electrically connect the pressure sensor to an external display through a circuit.

[0034] During use, place the concrete test block in the limit groove on the clamping plate, start the electric hydraulic pump. The electric hydraulic pump provides power for the hydraulic jack, drives the piston rod of the hydraulic jack to eject upward, and pushes the clamping plate to move upward, driving the concrete test block to move upward, so that the concrete test block is clamped between the clamping plate and the top plate for extrusion and finally crushed. During this process, the pressure exerted on the concrete test block acts on the pressure sensor at the bottom in the form of a reaction force and is displayed through the display, facilitating real-time monitoring of the pressure data.

[0035] After use, remove the hydraulic jack and unscrew the nuts at both ends of the double-headed screw, then the top plate, the bottom plate, the clamping plate, the backing plate and the mounting plate can be quickly removed, which is convenient for disassembly and assembly. At the same time, it is also convenient for storage, occupying a small space. The concrete compressive strength testing equipment of the present invention can be completely packed and stored in a 28-inch suitcase, which is very portable and can be tested anytime and anywhere, efficient and convenient.

[0036] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. A portable concrete compressive strength testing device, characterized in that: It includes a top plate, a base and connecting rods. The top plate and the base are fixedly connected by at least two connecting rods. Between the top plate and the base, there are arranged a clamping plate, a cushion plate and a mounting plate in sequence from top to bottom. The clamping plate, the cushion plate and the mounting plate are all slidably connected to the connecting rods. A pressure sensor is installed at the center of the mounting plate. A hydraulic driving device is placed on the cushion plate, and a concrete test block is placed on the clamping plate.

2. The portable concrete compressive strength testing device according to claim 1, characterized in that: The top plate and the base are fixedly connected by four connecting rods. The connecting rods are double-headed screws. The diameter of the smooth rod of the double-headed screw is larger than the diameter of the threaded end. Through holes are provided at the four corners of the top plate and the base. The diameter of the through holes of the top plate and the base is larger than the diameter of the threaded end and smaller than the diameter of the smooth rod. The two threaded ends of the double-headed screw respectively pass through the through holes of the top plate and the base and are fixed by nuts.

3. The portable concrete compressive strength testing device according to claim 2, characterized in that: Semicircular bayonets are provided at the four corners of the clamping plate, the cushion plate and the mounting plate. The clamping plate, the cushion plate and the mounting plate are all slidably clamped on the smooth rod of the double-headed screw through the semicircular bayonets.

4. A portable concrete compressive strength testing device according to claim 3, wherein: A mounting hole is provided at the center of the mounting plate, and the pressure sensor is installed in the mounting hole. The pressure sensor is electrically connected to an external display through a circuit.

5. The portable concrete compressive strength testing device according to claim 3, wherein: The hydraulic driving device includes a hydraulic jack. The hydraulic jack is placed in the middle of the cushion plate. The hydraulic jack is connected to an external hydraulic pump through an oil pipe.

6. The portable concrete compressive strength testing device according to claim 3, characterized in that: A square limiting groove is provided on the upper surface of the clamping plate, and the concrete test block is placed in the limiting groove.

7. A portable concrete compressive strength testing device according to claim 2, characterized in that: A limiting block is also provided on the double-headed screw, and the limiting block is located between the clamping plate and the cushion plate.

8. A portable concrete compressive strength testing device according to claim 7, characterized in that: A plurality of limiting holes are evenly provided on the double-headed screw. The limiting block is provided with a semicircular bayonet and a pin hole. The limiting block is slidably clamped on the double-headed screw through the semicircular bayonet and is fixed on the double-headed screw by a pin.

9. A portable concrete compressive strength testing device according to claim 1, characterized in that: Foot supports are provided at the four corners of the base, and fixing holes are provided at the bottoms of the foot supports.

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