Sample propelling and protecting device for concrete compressive strength test

Abstract

The utility model discloses a sample propelling and protecting device for a concrete compressive strength test, which relates to the field of building concrete and comprises a base, an upper top plate is connected to the top of the base, a propelling device is mounted at the top of the upper top plate, and a controller is mounted at the top, close to the propelling device, of the upper top plate. The rolling shielding cloth is arranged in the first rotating groove, a coil spring is connected between the rotating rods, the end, away from the rotating rods, of the rolling shielding cloth is connected with a hook block, and the hook block is connected with the long hook block in a clamped mode. According to the sample propelling and protecting device for the concrete compressive strength test, when concrete is pressed to be broken and splashed, the concrete can hit the side face of the covering and rolling cloth, the covering and rolling cloth can prevent broken stone from splashing through a flexible material of the covering and rolling cloth, and the use safety of a concrete strength detector is improved; and after the T-shaped block slides out of the T-shaped groove, the fixing rod can be driven to be separated from the base, and at the moment, the fixing rod can be detached and replaced.

Description

Technical Field

[0001] This utility model relates to the field of building concrete technology, specifically to a sample propulsion and protection device for concrete compressive strength testing. Background Technology

[0002] Construction concrete is mainly composed of cement, sand, gravel, and water mixed in a certain proportion. It is an essential material for construction projects and is related to the safety of the project. In order to ensure safety, the strength of concrete samples is usually tested through concrete pushing devices and protective devices. The pushing device can apply pressure to the concrete, and the protective device can prevent the crushed concrete and gravel from flying and causing injury to people around. The operator can judge the strength of the concrete based on the pressure value.

[0003] Current concrete strength testing instruments still have certain shortcomings, such as the phenomenon of concrete debris scattering and splashing after being subjected to pressure:

[0004] To overcome the problem of concrete debris flying everywhere, a prior art Chinese patent (publication number: CN222232206U) discloses a construction concrete on-site construction strength testing device. It is designed with an independent feeding mechanism. The entire moving platform is set on a propulsion support and is propelled by a first electric pusher cylinder to push the concrete to the bottom of the testing mechanism. It can realize external material release and automated feeding. In order to prevent the concrete from deviating or tipping during the propulsion process, we designed a protective group. The protective plate is pushed by a second electric pusher cylinder to limit the concrete on the loading disc, which facilitates subsequent testing.

[0005] However, the concrete strength testing instruments currently in use still have certain shortcomings. In the aforementioned document, the automatic feeding of concrete is achieved through an independent drive device, but when the concrete is subjected to pressure testing, gravel will fly out without adequate protection. The flying gravel poses a safety hazard, so the existing structure needs to be improved. Utility Model Content

[0006] The purpose of this utility model is to provide a sample propulsion and protection device for concrete compressive strength testing, so as to solve the problems mentioned in the background art, such as the inconvenience of concrete testing instruments in shielding concrete aggregates, which poses safety hazards, and the inconvenience of replacing consumable parts of the testing instrument, which affects testing efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sample advancing and protective device for concrete compressive strength testing, comprising a base, an upper plate connected to the top of the base, a advancing device mounted on the top of the upper plate, and a controller mounted on the top of the upper plate near the advancing device.

[0008] A pressure sensor is connected to the upper surface of the output end of the propulsion device. Four fixed rods are connected to the top of the base. A rotating groove is opened through the center of the fixed rod. Rotating grooves are opened at both ends of the rotating groove. A protective mechanism to improve the safety of on-site concrete testing is set inside the base.

[0009] The base has four T-shaped grooves on its upper surface near the fixing rod, and the T-shaped grooves are equipped with a locking mechanism for replacing the fixing rod.

[0010] Furthermore, the protective mechanism includes a rotating rod that rotates through and within a rotating groove one, with both ends of the rotating rod rotating within a rotating groove two, and a protective cloth wrapped around the surface of the rotating rod.

[0011] Furthermore, the shielding cloth is disposed inside the rotating groove, a coil spring is connected between the rotating rods, and a hook block is connected to the end of the shielding cloth away from the rotating rod.

[0012] Furthermore, the hook block and the long hook block are interlocked, the long hook block is fixed to the side of each fixing rod, and there is a through hole at the center of the long hook block.

[0013] Furthermore, the engaging mechanism includes a T-shaped block that slides through the T-shaped groove. The T-shaped block has a telescopic groove extending through its side, and the telescopic grooves are symmetrically arranged about the left and right sides of the T-shaped block.

[0014] Furthermore, a locking block slides through the inside of the telescopic groove, and a spring connects the locking block and the telescopic groove telescopically. The locking block and the locking groove are locked together, and the locking groove is formed on both sides of the T-shaped groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The sample propulsion and protection device for the concrete compressive strength test can prevent the concrete from breaking and splashing when it is compressed. The fragments will hit the side of the shielding cloth. The shielding cloth can prevent the fragments from splashing through its flexible material, thus improving the safety of the concrete strength tester. When the T-shaped block slides out of the T-shaped groove, it can drive the fixing rod to separate from the base. At this time, the fixing rod can be disassembled and replaced.

[0017] 2. A shielding cloth is provided to cover the concrete debris splashing out, improving the safety of the detector.

[0018] 3. Equipped with a coil spring, the spring force can drive the rotating rod to rotate, thereby facilitating the winding of the cover cloth and improving the convenience of using the cover cloth.

[0019] 4. It is equipped with hook blocks that can be hooked onto the side of the long hook block, making operation simple and allowing selective unfolding of the cover cloth to cover a designated surface, thus improving the adaptability of the detector;

[0020] 5. It is equipped with a locking block, which slides and extends via a spring, allowing for quick engagement with the locking slot and improving the efficiency of the instrument in replacing consumable parts. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall disassembled three-dimensional structure of this utility model;

[0023] Figure 3 This is an enlarged three-dimensional structural diagram of the cover cloth of this utility model;

[0024] Figure 4 This is an enlarged three-dimensional structural diagram of the coil spring of this utility model;

[0025] Figure 5 This is an enlarged three-dimensional structural diagram of the long hook block of this utility model;

[0026] Figure 6 This is an enlarged three-dimensional structural diagram of the T-shaped block of this utility model;

[0027] Figure 7 This is an enlarged three-dimensional structural diagram of the locking block of this utility model.

[0028] In the diagram: 1. Base; 2. Top plate; 3. Propulsion device; 4. Controller; 101. Fixing rod; 102. Rotating groove one; 103. Rotating groove two; 104. Rotating rod; 105. Sheath cloth; 106. Coil spring; 107. Hook block; 108. T-slot; 109. T-block; 110. Telescopic groove; 111. Engaging block; 112. Engaging groove; 113. Long hook block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1, such as Figures 1-5The technical solution shown in this utility model is as follows: To solve the problem that concrete detectors are inconvenient to cover concrete aggregates, posing a safety hazard, a protective mechanism is disclosed: including a base 1, an upper plate 2 connected to the top of the base 1, a propulsion device 3 installed on the top of the upper plate 2, and a controller 4 installed on the top of the upper plate 2 near the propulsion device 3; a pressure sensor is connected to the upper surface of the output end of the propulsion device 3; four fixed rods 101 are connected to the top of the base 1; a rotating groove 102 is formed through the center of the fixed rods 101; rotating grooves 103 are formed at both ends of the rotating groove 102; and a mechanism for improving concrete aggregate quality is provided inside the base 1. The protective mechanism for on-site soil testing includes a rotating rod 104, which rotates through the rotating groove 102 and has both ends rotating inside the rotating groove 103. A cover cloth 105 is wrapped around the surface of the rotating rod 104 and is located inside the rotating groove 102. A coil spring 106 connects the rotating rods 104. A hook block 107 is connected to the end of the cover cloth 105 away from the rotating rod 104. The hook block 107 is engaged with a long hook block 113. The long hook block 113 is fixed to the side of each fixed rod 101 and has a through hole at its center.

[0031] When concrete strength needs to be tested, a concrete sample needs to be placed on the upper surface of base 1. Then, the pusher 3 is started by controller 4. When the pusher 3 is running, it can push downwards and press. When the output end of the pusher 3 presses against the concrete surface, the pressure sensor on the surface of the output end of the pusher 3 can detect this pressure. After the concrete is crushed, the strength of the concrete can be determined based on the degree of damage and the magnitude of the pressure. During the process of concrete being compressed, concrete is prone to sputtering. The hook block 107 can be pulled to extend the cover cloth 105. When the cover cloth 105 extends, it can drive the rotating rod 104 to rotate. When the rotating rod 104 rotates, it can rotate through the rotating groove one 102 and the rotating groove two 103. At the same time, the rotating rod 104 can roll up through the rotating groove two 103. Spring 106 is elastically wound up. When spring 106 is wound up to a certain extent, hook block 107 can be stretched to the side of long hook block 113. At this time, hooking hook block 107 into the notch inside long hook block 113 can achieve positioning. Hook block 107, positioned as a shielding cloth 105, can cover one side of base 1. The other three sets of shielding cloths 105 are used in the same way to cover the sides of base 1. When concrete is compressed and breaks and splashes, it will hit the side of shielding cloth 105. Shielding cloth 105, through its flexible material, can prevent the splashing of gravel, improving the safety of concrete strength testing. After the test is completed, shielding cloth 105 can be reset. When spring 106 is reset, it will drive rotating rod 104 to rotate, thereby achieving the winding of shielding cloth 105, improving ease of use.

[0032] Example 2, as follows Figure 1 , Figure 2 , Figure 6 and Figure 7 The present invention provides the following technical solution to address the problem of inconvenient replacement of consumable parts in concrete testing instruments, which affects testing efficiency: A locking mechanism is disclosed. Four T-shaped grooves 108 are provided on the upper surface of the base 1 near the fixed rod 101. A locking mechanism for replacing the fixed rod 101 is provided inside each T-shaped groove 108. The locking mechanism includes a T-shaped block 109, which slides through the T-shaped groove 108. A telescopic groove 110 is provided through the side of the T-shaped block 109, and the telescopic grooves 110 are symmetrically arranged about the left and right sides of the T-shaped block 109. A locking block 111 slides through the telescopic groove 110. A spring connects the locking block 111 to the telescopic groove 110. The locking block 111 and the locking groove 112 are locked together, and the locking groove 112 is located on both sides of the T-shaped groove 108.

[0033] The shielding cloth 105 of the concrete tester may be torn by gravel after prolonged use and needs to be replaced. The locking block 111 can be pushed to slide through the telescopic groove 110 and the locking groove 112. When the locking block 111 slides, it can compress the spring. After the locking block 111 is pressed into the telescopic groove 110, it pushes the fixing rod 101 outward of the base 1. When the fixing rod 101 is pushed, it can drive the T-block 109 to move. When the T-block 109 moves, it can slide through the T-groove 108. When the T-block 109 slides out of the T-groove 108, it can drive the fixing rod 101 to separate from the base 1. At this time, the fixing rod 101 can be disassembled and replaced, which improves the efficiency of replacing consumable parts of the concrete strength tester.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sample propulsion and protection device for a concrete compressive strength test, comprising a base (1), an upper plate (2) connected to the top of the base (1), a propulsion device (3) installed on the top of the upper plate (2), and a controller (4) installed on the top of the upper plate (2) near the propulsion device (3), characterized in that: A pressure sensor is connected to the upper surface of the output end of the propulsion device (3), and four fixed rods (101) are connected to the top of the base (1). A rotating groove (102) is opened through the center of the fixed rod (101), and a rotating groove (103) is opened at both ends of the rotating groove (102). A protective mechanism to improve the safety of concrete on-site testing is provided inside the base (1). The base (1) has four T-shaped grooves (108) on its upper surface near the fixing rod (101), and the T-shaped grooves (108) are provided with a locking mechanism for replacing the fixing rod (101).

2. A concrete compressive strength test specimen advancing and protecting device according to claim 1, characterized in that: The protective mechanism includes a rotating rod (104), which rotates through the first rotating groove (102) and has both ends rotating inside the second rotating groove (103). A cover cloth (105) is wrapped around the surface of the rotating rod (104).

3. A concrete compressive strength test specimen advancing and protecting device according to claim 2, characterized in that: The cover cloth (105) is disposed inside the rotating groove (102), and a coil spring (106) is connected between the rotating rod (104). A hook block (107) is connected to the end of the cover cloth (105) away from the rotating rod (104).

4. A concrete compressive strength test specimen advancing and protecting device according to claim 3, characterized in that: The hook block (107) and the long hook block (113) are engaged. The long hook block (113) is fixed to the side of each fixing rod (101), and there is a through hole at the center of the long hook block (113).

5. The concrete compression strength test specimen advancing and protecting device according to claim 1, characterized in that: The engaging mechanism includes a T-shaped block (109), which slides through the T-shaped groove (108). A telescopic groove (110) is provided through the side of the T-shaped block (109), and the telescopic groove (110) is symmetrically opened about the left and right sides of the T-shaped block (109).

6. A concrete compressive strength test specimen advancing and protecting device according to claim 5, characterized in that: A locking block (111) slides through the inside of the telescopic groove (110). A spring is telescopically connected between the locking block (111) and the telescopic groove (110). The locking block (111) and the locking groove (112) are locked together. The locking groove (112) is opened on both sides of the T-shaped groove (108).

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