Concrete crack resistance testing device

Abstract

The utility model relates to the field of testing devices, in particular to a concrete crack resistance testing device which comprises a testing machine, a hydraulic extrusion block is mounted on one side of the top end of the testing machine, a placing table is fixedly connected to one side of the top end of the testing machine, and an adjusting mechanism is arranged on one side of the top end of the testing machine; wherein the adjusting mechanism comprises a fixed connection part; according to the arrangement of the adjusting mechanism, two first push plates and two second push plates are utilized to form a rectangle, and under the action of a bevel gear, when a first two-way screw rod is rotated, the first two-way screw rod can drive the two first push plates and a second two-way screw rod can drive the two second push plates to get close to each other at the same time, and a concrete block is pushed to move; the concrete block can be conveniently placed between the two first push plates and the two second push plates, it is guaranteed that the center of the concrete block, the center point of the placing table and the center point of the hydraulic extrusion block are located on the same straight face during testing, adjustment is accurate, repeated adjustment is not needed, and labor is saved during adjustment.

Description

Technical Field

[0001] The utility model relates to the field of testing devices, in particular to a concrete anti-cracking testing device. Background Art

[0002] Concrete is a general term for engineering composite materials that are made of aggregates bonded together by cementitious materials. The term concrete usually refers to cement concrete that is made by mixing cement as a cementitious material, sand and stone as aggregates, and water (which may contain admixtures and additives) in a certain proportion. In order to evaluate the crack resistance of concrete under different conditions and ensure the safety, durability and reliability of concrete structures during use, it is necessary to conduct crack resistance tests on square concrete blocks.

[0003] The Chinese patent "A concrete crack resistance performance testing device" authorization announcement number "CN 215492858U" makes the side of the card block fit with the pressure block, aligns the other end of the indicator rod with the center of the lower side of the pressure block, and places the concrete block on the loading surface. According to the position of the indicator needle, adjust the center position of the concrete block to align with the indicator needle, and then remove the card block for testing, thereby improving the convenience of alignment and thus improving the convenience and safety of use.

[0004] In the above application, under the action of the indicator rod, the staff aligns the center point of the concrete block with the center point of the pressure block, but the concrete block has a certain weight, and the staff needs to constantly adjust the position of the concrete block during the alignment process, which is quite laborious.

[0005] Therefore, a concrete crack resistance testing device is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a concrete crack resistance testing device in order to solve the above-mentioned problem, thereby improving the problem that the concrete blocks have a certain weight and the workers need to constantly adjust the positions of the concrete blocks during the alignment process, which is quite laborious.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme: a concrete crack resistance testing device, comprising: a testing machine, a hydraulic extrusion block is installed on one side of the top of the testing machine, a placing table is fixedly connected to one side of the top of the testing machine, and an adjustment mechanism is arranged on one side of the top of the testing machine; wherein, the adjustment mechanism comprises a mounting frame fixedly connected to one side of the top of the testing machine, two connecting plates are slidably connected to the inner wall of the mounting frame, a first push plate is fixedly connected to the inner wall of the connecting plate, two movable plates are slidably connected to the top of the mounting frame, a second push plate is fixedly connected to the bottom end of the movable plate, the two first push plates and the two second push plates are distributed in a rectangular shape, and an adjustment component is arranged on the surface of the mounting frame.

[0008] Preferably, the adjustment assembly includes two bevel gears, the two bevel gears are meshed and connected, the front end of the installation frame is fixedly connected with two first fixed blocks, the opposite sides of the two first fixed blocks are rotatably connected with a first bidirectional screw, one end of the two connecting plates passes through the installation frame and is threadedly connected to the surface of the first bidirectional screw, and one end of the first bidirectional screw passes through the first fixed block and is fixedly connected to one end of one of the bevel gears. And under the action of the bevel gear, when the first bidirectional screw is rotated, it is beneficial for the first bidirectional screw to drive the two first push plates and the second bidirectional screw to drive the two second push plates to approach each other at the same time.

[0009] Preferably, the adjustment assembly also includes two second fixed blocks fixedly connected to one side of the mounting frame, a second bidirectional screw rod is rotatably connected between the opposite sides of the two second fixed blocks, one side of the bottom end of the two movable plates is threadedly connected to the surface of the second bidirectional screw rod, and one end of the second bidirectional screw rod passes through the second fixed block and is fixedly connected to one end of another bevel gear.

[0010] Preferably, a fixing frame is embedded and installed at the top of the placing table, and a mounting plate is slidably connected to the inner wall of the fixing frame. The top of the mounting plate is rotatably connected to balls distributed in equal rows, and the upper ends of the balls penetrate the fixing frame. When adjusting the position of the concrete block, under the action of multiple balls, the friction force of the concrete block when moving is reduced, and the stability of the concrete block when moving is improved. When adjusting, the concrete block is effectively protected, and the accuracy of the concrete block test data is guaranteed.

[0011] Preferably, the front end of the mounting frame is fixedly connected to a mounting block, the inner wall of the mounting block is threadedly connected to a bolt, the top of the bolt is rotatably connected to a connecting block, and one end of the mounting plate passes through the mounting frame and is fixedly connected to one side of the connecting block. After the adjustment is completed, it is helpful to release the contact between the ball and the concrete block, which is conducive to better testing the concrete block.

[0012] Preferably, a clamping block is fixedly connected to the inner wall of the connecting block, which is beneficial for limiting the first bidirectional screw rod and the second bidirectional screw rod when the concrete block is subjected to an extrusion test, thereby ensuring the stability of the first push plate and the second push plate.

[0013] Preferably, the overall shape of the fixing frame is a "cross" shape, which is helpful to ensure that when the concrete block is placed on the placement table, the ball is in contact with the bottom end of the concrete block.

[0014] Preferably, the top of the fixing frame is provided with circular holes distributed in equal rows, and the diameter of the circular holes is larger than the diameter of the ball, which is helpful to reduce the friction between the ball and the fixing frame when the ball rotates.

[0015] The beneficial effects of the utility model are:

[0016] 1. The setting of the adjustment mechanism uses two first push plates and two second push plates to form a rectangle, and under the action of the bevel gear, when the first bidirectional screw is rotated, it is conducive to the first bidirectional screw to drive the two first push plates and the second bidirectional screw to drive the two second push plates to approach each other at the same time, and push the concrete block to move, which is conducive to placing the concrete block between the two first push plates and the two second push plates, ensuring that the center of the concrete block is in the same plane as the center point of the placement table and the center point of the hydraulic extrusion block during the test, and the adjustment is more accurate, no repeated adjustment is required, and the adjustment is more labor-saving;

[0017] 2. When adjusting the position of the concrete block, the action of multiple balls helps to reduce the friction when the concrete block moves, improves the stability when pushing the concrete block to move, and effectively protects the concrete block during adjustment, ensuring the accuracy of the concrete block test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the adjustment mechanism of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0021] Figure 4 This is a schematic diagram of the placement table structure of the utility model;

[0022] Figure 5 It is an exploded view of the fixing frame and the mounting plate of the utility model.

[0023] In the figure: 1. testing machine; 2. hydraulic extrusion block; 3. placing table; 4. adjusting mechanism; 401. mounting frame; 402. connecting plate; 403. first push plate; 404. moving plate; 405. second push plate; 406. adjusting assembly; 4061. bevel gear; 4062. first fixing block; 4063. first bidirectional screw rod; 4064. second fixing block; 4065. second bidirectional screw rod; 407. fixing frame; 4071. mounting plate; 4072. sphere; 4073. round hole; 408. mounting block; 4081. bolt; 4082. connecting block; 409. clamping block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] When implementing: Figure 1-5 As shown, a concrete crack resistance testing device comprises: a testing machine 1, a hydraulic extrusion block 2 is installed on one side of the top of the testing machine 1, a placing table 3 is fixedly connected to one side of the top of the testing machine 1, and an adjustment mechanism 4 is arranged on one side of the top of the testing machine 1; wherein, the adjustment mechanism 4 comprises a mounting frame 401 fixedly connected to one side of the top of the testing machine 1, two connecting plates 402 are slidably connected to the inner wall of the mounting frame 401, a first push plate 403 is fixedly connected to the inner wall of the connecting plate 402, two moving plates 404 are slidably connected to the top of the mounting frame 401, a second push plate 405 is fixedly connected to the bottom end of the moving plate 404, the two first push plates 403 and the two second push plates 405 are distributed in a rectangular shape, and an adjustment component 406 is arranged on the surface of the mounting frame 401.

[0026] The testing machine 1 and the hydraulic extrusion block 2 are relatively mature devices in the prior art and will not be described in detail here.

[0027] The placement table 3 is located at the center of the installation frame 401, and the center point of the placement table 3 and the center point of the hydraulic extrusion block 2 are on the same vertical plane. The two first push plates 403 and the two second push plates 405 are symmetrical about the center of the placement table 3, and the distance between the two first push plates 403 and the two second push plates 405 is the same.

[0028] like Figure 2 and Figure 3As shown, the adjustment assembly 406 includes two bevel gears 4061, and the two bevel gears 4061 are meshingly connected. The front end of the mounting frame 401 is fixedly connected with two first fixing blocks 4062, and a first bidirectional screw rod 4063 is rotatably connected between the opposite sides of the two first fixing blocks 4062. One end of the two connecting plates 402 passes through the mounting frame 401 and is threadedly connected to the surface of the first bidirectional screw rod 4063, and one end of the first bidirectional screw rod 4063 passes through the first fixing block 4062 and is fixedly connected to one end of one of the bevel gears 4061. The adjustment assembly 406 also includes two second fixed blocks 4064 fixedly connected to one side of the mounting frame 401, and a second bidirectional screw rod 4065 is rotatably connected between the opposite sides of the two second fixed blocks 4064, and one side of the bottom end of the two movable plates 404 is threadedly connected to the surface of the second bidirectional screw rod 4065, and one end of the second bidirectional screw rod 4065 passes through the second fixed block 4064 and is fixedly connected to one end of another bevel gear 4061.

[0029] When testing a concrete block, the block is placed on the placing table 3, the first bidirectional screw 4063 is rotated, and one of the bevel gears 4061 is driven to rotate, and under the action of the other bevel gear 4061, the second bidirectional screw 4065 is rotated synchronously with the first bidirectional screw 4063, the threads of the two connecting plates 402 connected to the first bidirectional screw 4063 are opposite, and the threads of the two moving plates 404 connected to the second bidirectional screw 4065 are opposite, so when the first bidirectional screw 4063 and the second bidirectional screw 4065 are rotated When the first push plates 403 and the second push plates 405 are moved together, the two connecting plates 402 drive the two first push plates 403 to move closer to each other, and the two movable plates 404 drive the two second push plates 405 to move closer to each other. In the process of the first push plates 403 and the second push plates 405 moving, the four surfaces of the concrete block will respectively contact one side of the two first push plates 403 and the two second push plates 405, and the concrete block will be placed in the rectangle formed by the first push plates 403 and the second push plates 405. At this time, the center point of the concrete block is on the same vertical plane as the center point of the placement platform 3 and the center point of the hydraulic extrusion block 2.

[0030] There is a certain distance between the bottom ends of the first push plate 403 and the second push plate 405 and the top end of the placement table 3 .

[0031] like Figure 4 and Figure 5As shown, a fixing frame 407 is embedded and installed at the top of the placing table 3, and a mounting plate 4071 is slidably connected to the inner wall of the fixing frame 407, and the top of the mounting plate 4071 is rotatably connected to round balls 4072 distributed in equal rows, and the upper ends of the surfaces of the round balls 4072 penetrate the fixing frame 407. The overall shape of the fixing frame 407 is a "cross". Round holes 4073 distributed in equal rows are opened at the top of the fixing frame 407, and the diameter of the round holes 4073 is larger than the diameter of the round balls 4072.

[0032] When the concrete block is placed on the placement table 3, the bottom end of the concrete block contacts the surface of the ball 4072. When the first push plate 403 and the second push plate 405 push the concrete block to move, the concrete block causes the ball 4072 to rotate.

[0033] like Figure 4 As shown, the front end of the mounting frame 401 is fixedly connected to a mounting block 408, the inner wall of the mounting block 408 is threadedly connected to a bolt 4081, the top of the bolt 4081 is rotatably connected to a connecting block 4082, and one end of the mounting plate 4071 passes through the mounting frame 401 and is fixedly connected to one side of the connecting block 4082.

[0034] After the position adjustment of the concrete block is completed, the bolt 4081 is rotated to drive the connecting block 4082 to move downward, thereby driving the mounting plate 4071 to move downward synchronously. When the mounting plate 4071 moves downward, it will drive the ball 4072 to shrink into the fixed frame 407. At this time, the bottom end of the concrete block contacts the top end of the placement table 3.

[0035] like Figure 4 As shown, the inner wall of the connecting block 4082 is fixedly connected with a clamping block 409. When the bolt 4081 is turned to drive the connecting block 4082 to move downward, the clamping block 409 will be driven to move downward synchronously. The clamping block 409 is a half-circular ring, and its diameter is the same as that of the first bidirectional screw rod 4063. When the clamping block 409 moves downward, it will contact the surface of the first bidirectional screw rod 4063 and press the first bidirectional screw rod 4063 tightly.

[0036] When the utility model is used to test the concrete block, the brick is placed on the placing table 3, the bottom end of the concrete block contacts the surface of the ball 4072, and the first bidirectional screw 4063 is rotated. Under the action of the two bevel gears 4061, the second bidirectional screw 4065 is rotated synchronously with the first bidirectional screw 4063, so that the two connecting plates 402 drive the two first push plates 403 and the two moving plates 404 drive the two second push plates 405 to approach each other and push the concrete block at the same time. The concrete block will cause the ball 4072 to rotate during the movement, and the first push plate 403 and the second push plate 405 will be moved during the movement of the concrete block. The four faces of the concrete block will contact one side of the two first push plates 403 and the two second push plates 405 respectively, and the concrete block will be placed in the rectangle formed by the first push plates 403 and the second push plates 405. At this time, the center point of the concrete block is in the same vertical plane as the center point of the placement table 3 and the center point of the hydraulic extrusion block 2. After the position adjustment is completed, the bolt 4081 is rotated to drive the connecting block 4082 to make the mounting plate 4071 move downward synchronously, thereby driving the ball 4072 to shrink into the fixed frame 407. At this time, the bottom end of the concrete block is in contact with the top end of the placement table 3, and the hydraulic extrusion block 2 is started to move downward to test the concrete block.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A concrete crack resistance testing device, characterized in that: include: A testing machine (1), wherein a hydraulic extrusion block (2) is installed on one side of the top end of the testing machine (1), a placing table (3) is fixedly connected to one side of the top end of the testing machine (1), and an adjustment mechanism (4) is provided on one side of the top end of the testing machine (1); The adjustment mechanism (4) comprises a mounting frame (401) fixedly connected to one side of the top end of the testing machine (1); the inner wall of the mounting frame (401) is slidably connected to two connecting plates (402); the inner wall of the connecting plate (402) is fixedly connected to a first push plate (403); the top end of the mounting frame (401) is slidably connected to two movable plates (404); the bottom end of the movable plate (404) is fixedly connected to a second push plate (405); the two first push plates (403) and the two second push plates (405) are distributed in a rectangular shape; and an adjustment component (406) is arranged on the surface of the mounting frame (401).

2. A concrete crack resistance testing device according to claim 1, characterized in that: The adjustment assembly (406) comprises two bevel gears (4061), the two bevel gears (4061) are meshedly connected, the front end of the installation frame (401) is fixedly connected with two first fixing blocks (4062), the opposite sides of the two first fixing blocks (4062) are rotatably connected with a first bidirectional screw rod (4063), one end of the two connecting plates (402) passes through the installation frame (401) and is threadedly connected to the surface of the first bidirectional screw rod (4063), and one end of the first bidirectional screw rod (4063) passes through the first fixing block (4062) and is fixedly connected to one end of one of the bevel gears (4061).

3. A concrete crack resistance testing device according to claim 1, characterized in that: The adjustment assembly (406) also includes two second fixed blocks (4064) fixedly connected to one side of the installation frame (401), and a second bidirectional screw rod (4065) is rotatably connected between the opposite sides of the two second fixed blocks (4064), and one side of the bottom end of the two movable plates (404) is threadedly connected to the surface of the second bidirectional screw rod (4065), and one end of the second bidirectional screw rod (4065) passes through the second fixed block (4064) and is fixedly connected to one end of another bevel gear (4061).

4. A concrete crack resistance testing device according to claim 1, characterized in that: A fixing frame (407) is embedded and installed at the top of the placement table (3); a mounting plate (4071) is slidably connected to the inner wall of the fixing frame (407); and round balls (4072) distributed in equal rows are rotatably connected to the top of the mounting plate (4071); and the upper ends of the surfaces of the round balls (4072) penetrate the fixing frame (407).

5. A concrete crack resistance testing device according to claim 4, characterized in that: The front end of the installation frame (401) is fixedly connected to a mounting block (408), the inner wall of the installation block (408) is threadedly connected to a bolt (4081), the top end of the bolt (4081) is rotatably connected to a connecting block (4082), and one end of the installation plate (4071) passes through the installation frame (401) and is fixedly connected to one side of the connecting block (4082).

6. A concrete crack resistance testing device according to claim 5, characterized in that: The inner wall of the connecting block (4082) is fixedly connected with a clamping block (409).

7. A concrete crack resistance testing device according to claim 4, characterized in that: The overall shape of the fixing frame (407) is a "cross" shape.

8. A concrete crack resistance testing device according to claim 4, characterized in that: The top of the fixing frame (407) is provided with circular holes (4073) distributed in equal rows, and the diameter of the circular holes (4073) is larger than the diameter of the sphere (4072).

Images