Early crack resistance testing device for concrete

Abstract

The utility model discloses a concrete early-stage crack resistance testing device which comprises a working table, a placing groove is formed in the middle of the upper end of the working table, and a discharging mechanism is installed at the position, located at the bottom of the placing groove, of the working table. The device has the beneficial effects that the discharging mechanism is mounted at the experimental position of a finished concrete block, so that after the finished concrete block is subjected to an anti-cracking performance test, the concrete block can automatically fall off after the test by shrinking the telescopic supporting plate into the accommodating groove; meanwhile, the two sides of the two-way clamping mechanism are each provided with one pushing mechanism, and after a telescopic supporting plate on the discharging mechanism is closed and reset, finished concrete blocks to be tested can be automatically pushed from the clamping position to the testing position under the action of pushing plates and first electric telescopic rods in the pushing mechanisms; therefore, automatic feeding of the concrete blocks is achieved, and the labor intensity of experimenters in the testing process is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of concrete performance test, in particular to a concrete early anti-cracking performance test 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 as a cementitious material, sand and stone as aggregates; mixed with water (which may contain admixtures and additives) in a certain proportion and stirred to obtain cement concrete, also known as ordinary concrete, which is widely used in civil engineering. The concrete early crack resistance test device is a derivative of concrete. At present, the concrete on the market is in use, and it is necessary to conduct an early crack resistance test on the concrete. The required finished concrete needs to be placed on the crack resistance test device for a pressure crack resistance test.

[0003] A Chinese patent with announcement number CN218036021U discloses a concrete early crack resistance test device, including a workbench with a first groove formed inside the workbench, a motor fixedly connected inside the first groove, and a driving shaft fixedly connected to one end of the motor output shaft.

[0004] The concrete early crack resistance test device described in the above patent can clamp and fix the excess finished concrete placed on the workbench when in use, so as to prevent the excess finished concrete blocks from affecting the crack resistance test of the concrete blocks in the test process. However, during the test, the unloading process of the concrete after the test and the movement of the concrete blocks to be tested to the test position are all achieved through manual handling, which greatly increases the labor intensity of the experimenters when conducting crack resistance tests on the finished concrete blocks. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a concrete early crack resistance testing device in view of the current status of the prior art, which can realize the automatic dropping of concrete blocks after the test and the automatic pushing of the finished concrete to be tested from the clamping position to the test position.

[0006] The utility model is achieved through the following technical scheme: the utility model proposes a concrete early crack resistance test device, including a workbench, a placement groove is opened in the middle of the upper end of the workbench, a discharge mechanism is installed on the workbench at the bottom of the placement groove, two two-way clamping mechanisms are symmetrically installed on the upper end of the workbench on both sides of the placement groove, and a pushing mechanism is installed on the workbench on one side of each of the two-way clamping mechanisms, wherein the discharge mechanism includes two telescopic support plates symmetrically installed at the bottom of the placement groove, two electric telescopic rods installed on one side wall of the telescopic support plates, and a storage groove opened on the workbench at the fixed part of the two electric telescopic rods, and the pushing mechanism includes a vertical plate welded on the workbench, an electric telescopic rod one installed on the pushing side of the vertical plate, and a pushing plate installed on the telescopic part of the electric telescopic rod one.

[0007] By adopting the above technical scheme, after the finished concrete block has completed the crack resistance test, the telescopic support plate in the discharge mechanism can be retracted into the storage groove to realize the automatic falling of the concrete block after the test. At the same time, by installing one pushing mechanism on both sides of the two-way clamping mechanism, the pushing plate in the pushing mechanism and the electric telescopic rod can work together to push the finished concrete block to be tested from the clamping position to the test position, thereby realizing automatic loading of concrete blocks.

[0008] Furthermore, the bidirectional clamping mechanism includes a slide groove opened on the workbench, a bidirectional screw installed in the middle of the slide groove, a clamping plate symmetrically installed on the two sections of the bidirectional screw with opposite rotation directions, and a motor installed on the workbench facing the bidirectional screw.

[0009] By adopting the above technical solution, the motor drives the bidirectional screw to rotate, and the excess finished concrete blocks placed on the workbench can be clamped and fixed under the action of the clamping plate.

[0010] Furthermore, two electric cylinders are symmetrically installed on the upper end of the workbench on both sides of the placement groove, and the telescopic parts of the two electric cylinders are jointly installed with a test block for performing a crack resistance test on the finished concrete block.

[0011] By adopting the above technical solution, after the finished concrete block to be tested is placed in the placement groove, the test pressing block is pressed on the finished concrete block under the action of the electric cylinder to test the crack resistance of the finished concrete block.

[0012] Furthermore, a material receiving cavity is provided in the workbench directly below the placement groove, and the material receiving cavity is communicated with the placement groove.

[0013] By adopting the above technical solution, the material collecting chamber can ensure convenient collection of concrete blocks after the crack resistance test.

[0014] Furthermore, a double-opening door is installed in the middle of one side wall of the workbench through a hinge, and an operation panel is installed on the workbench at the upper side of the door.

[0015] By adopting the above technical solution, the concrete blocks collected in the receiving chamber can be taken out in a centralized manner by opening the box door.

[0016] Furthermore, the telescopic support plate is bolted to the telescopic portion of the second electric telescopic rod, a portion of the telescopic support plate connected to the second electric telescopic rod is a concave structure, and the telescopic support plate is slidably connected to the storage groove.

[0017] By adopting the above technical solution, after the concrete test is completed, under the action of the second electric telescopic rod, the telescopic support plate can be retracted into the storage groove, thereby realizing the opening of the bottom of the placement groove, which facilitates the convenient falling of the concrete block after the test.

[0018] Furthermore, the fixing part of the electric telescopic rod 1 is connected to the vertical plate bolt, and the telescopic part of the electric telescopic rod 1 is connected to the push plate bolt.

[0019] By adopting the above technical solution, the push plate can be driven to move conveniently under the action of the electric telescopic rod, so as to automatically push the concrete block to be tested from the clamping position to the test position.

[0020] Furthermore, the bidirectional screw is slidably connected to the slide groove and is connected to the motor via a coupling, and the bidirectional screw passes through the clamping plate and is threadedly connected to the clamping plate.

[0021] By adopting the above technical solution, the motor is mainly used to provide power for the rotation of the bidirectional screw rod, so as to ensure the convenient rotation of the bidirectional screw rod.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The utility model installs a discharge mechanism at the experimental position of the finished concrete block, so that after the crack resistance test of the finished concrete block is completed, the telescopic support plate can be retracted into the storage groove to realize the automatic falling of the concrete block after the test. At the same time, a pushing mechanism is installed on both sides of the two-way clamping mechanism, and after the telescopic support plate on the discharge mechanism is closed and reset, the pushing plate in the pushing mechanism and the electric telescopic rod can work together to realize the automatic pushing of the finished concrete block to be tested from the clamping position to the experimental position, thereby realizing automatic loading of the concrete block, and effectively reducing the labor intensity of the experimenter during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a concrete early crack resistance test device described in the utility model;

[0025] Figure 2 It is a main cross-sectional view of a concrete early crack resistance test device according to the utility model;

[0026] Figure 3 It is a top view of a concrete early crack resistance test device according to the utility model;

[0027] Figure 4 It is a schematic diagram of the structure of a clamping plate in a concrete early crack resistance test device described in the utility model;

[0028] Figure 5 The utility model is a schematic structural diagram of a telescopic support plate in a concrete early anti-cracking performance testing device.

[0029] The following are the descriptions of the reference numerals:

[0030] 1. Test block; 2. Pushing mechanism; 201. Vertical plate; 202. Electric telescopic rod 1; 203. Pushing plate; 3. Bidirectional clamping mechanism; 301. Slide; 302. Clamping plate; 303. Motor; 304. Bidirectional screw; 4. Operation panel; 5. Workbench; 6. Electric cylinder; 7. Box door; 8. Discharging mechanism; 801. Telescopic support plate; 802. Electric telescopic rod 2; 803. Storage slot; 9. Placement slot; 10. Receiving chamber. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] like Figure 1-Figure 3As shown, a concrete early crack resistance test device in this embodiment includes a workbench 5, a placement groove 9 is opened in the middle of the upper end of the workbench 5, the placement groove 9 is the main position for placing the finished concrete blocks to be tested, a discharge mechanism 8 is installed on the workbench 5 at the bottom of the placement groove 9, two two-way clamping mechanisms 3 are symmetrically installed on the upper end of the workbench 5 on both sides of the placement groove 9, and a pushing mechanism 2 is installed on one side of each two-way clamping mechanism on the workbench 5, wherein the discharge mechanism 8 includes two telescopic support plates 801 symmetrically installed at the bottom of the placement groove 9, an electric telescopic rod 802 installed on one side wall of the telescopic support plate 801, and a storage groove 803 opened on the workbench 5 at the fixed part of the electric telescopic rod 802, and the pushing mechanism 2 includes a vertical plate 201 welded on the workbench 5, an electric telescopic rod 202 installed on the pushing side of the vertical plate 201, and a pushing plate 203 installed on the telescopic part of the electric telescopic rod 202.

[0033] Among them, after the finished concrete blocks have completed the crack resistance test, the telescopic support plate 801 in the discharge mechanism 8 can be retracted into the storage groove 803 to realize the automatic falling of the concrete blocks after the experiment. At the same time, a pushing mechanism 2 is installed on both sides of the bidirectional clamping mechanism 3, so that after the telescopic support plate 801 on the discharge mechanism 8 is closed and reset, the pushing plate 203 in the pushing mechanism 2 and the electric telescopic rod 202 can realize the automatic pushing of the finished concrete blocks to be tested from the clamping position to the test position, thereby realizing automatic loading of the concrete blocks.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the bidirectional clamping mechanism 3 includes a slide groove 301 opened on the workbench 5, a bidirectional screw rod 304 installed in the middle of the slide groove 301, a clamping plate 302 symmetrically installed on the two sections of the threaded parts with opposite rotation directions on the bidirectional screw rod 304, and a motor 303 installed on the workbench 5 facing the bidirectional screw rod 304. The motor 303 drives the bidirectional screw rod 304 to rotate, and under the action of the clamping plate 302, the excess finished concrete blocks placed on the workbench 5 can be clamped and fixed.

[0035] like Figure 1-Figure 3 As shown, in this embodiment, two electric cylinders 6 are symmetrically installed on the upper end of the workbench 5 on both sides of the placement groove 9, and the telescopic parts of the two electric cylinders 6 are jointly installed with a test block 1 for testing the crack resistance of the finished concrete block. When the finished concrete block to be tested is placed in the placement groove 9, the test block 1 is pressed on the finished concrete block under the action of the electric cylinder 6 to test the crack resistance of the finished concrete block.

[0036] like Figure 1-Figure 3As shown, in this embodiment, a receiving chamber 10 is provided in the workbench 5 directly below the placement groove 9. The receiving chamber 10 is connected with the placement groove 9. The receiving chamber 10 can ensure convenient collection of concrete blocks after the crack resistance test. A double-opening door 7 is installed in the middle of one side wall of the workbench 5 through a hinge. An operation panel 4 is installed on the upper side of the door 7 on the workbench 5. The concrete blocks collected in the receiving chamber 10 can be taken out in a centralized manner by opening the door 7.

[0037] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the telescopic support plate 801 is bolted to the telescopic part of the electric telescopic rod 802. The part of the telescopic support plate 801 that is connected to the electric telescopic rod 802 is a concave structure. The telescopic support plate 801 is slidably connected to the storage groove 803. When the concrete test is completed, under the action of the electric telescopic rod 802, the telescopic support plate 801 can be retracted into the storage groove 803, thereby realizing the opening of the bottom of the placement groove 9, which is convenient for the convenient falling of the concrete block after the test.

[0038] like Figure 1-Figure 3 As shown, in this embodiment, the fixed part of the electric telescopic rod 202 is bolted to the vertical plate 201, and the telescopic part of the electric telescopic rod 202 is bolted to the push plate 203. Under the action of the electric telescopic rod 202, the push plate 203 can be driven to move conveniently, so as to automatically push the concrete block to be tested from the clamping position to the test position.

[0039] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the bidirectional screw rod 304 is slidingly connected to the slide groove 301 and is connected to the motor 303 through a coupling. The bidirectional screw rod 304 passes through the splint 302 and is threadedly connected to the splint 302. The motor 303 is mainly used to provide power for the rotation of the bidirectional screw rod 304 to ensure the convenient rotation of the bidirectional screw rod 304.

[0040] The specific implementation process of this embodiment is as follows: during the test, the finished concrete block to be tested is first placed in the placement groove 9, and the excess finished concrete blocks are clamped and fixed under the action of the two-way clamping mechanism 3, and then the test pressing block 1 is driven by the electric cylinder 6 to squeeze the finished concrete block in the placement groove 9, so as to test the crack resistance of the finished concrete block. When the test is completed, the telescopic support plate 801 can be retracted into the storage groove 803 under the action of the electric telescopic rod 2 802 in the discharge mechanism 8, so as to realize the automatic falling of the concrete block after the experiment. At the same time, after the telescopic support plate 801 on the discharge mechanism 8 is closed and reset, the pushing plate 203 in the pushing mechanism 2 and the electric telescopic rod 1 202 can realize the automatic pushing of the finished concrete block to be tested from the clamping position to the test position, thereby realizing the automatic loading of the concrete block, and effectively reducing the manual labor intensity in the process of replacing new finished concrete blocks to be tested during the experiment.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A concrete early crack resistance test device, characterized in that: The invention comprises a workbench (5), wherein a placement groove (9) is provided in the middle of the upper end of the workbench (5), a material discharging mechanism (8) is installed on the workbench (5) at the bottom of the placement groove (9), two bidirectional clamping mechanisms (3) are symmetrically installed on the upper end of the workbench (5) at both sides of the placement groove (9), and a material pushing mechanism (2) is installed on the workbench (5) at one side of each of the bidirectional clamping mechanisms, wherein the material discharging mechanism (8) comprises two telescopic support plates (801) symmetrically installed at the bottom of the placement groove (9), a second electric telescopic rod (802) installed on a side wall of the telescopic support plate (801), and a storage groove (803) provided on the workbench (5) at the fixing part of the second electric telescopic rod (802), and the material pushing mechanism (2) comprises a vertical plate (201) welded to the workbench (5), a first electric telescopic rod (202) installed on the material pushing side of the vertical plate (201), and a material pushing plate (203) installed at the telescopic part of the first electric telescopic rod (202).

2. A concrete early crack resistance test device according to claim 1, characterized in that: The bidirectional clamping mechanism (3) comprises a slide groove (301) provided on the workbench (5), a bidirectional screw rod (304) installed in the middle of the slide groove (301), a clamping plate (302) symmetrically installed on two sections of threaded parts with opposite rotation directions on the bidirectional screw rod (304), and a motor (303) installed on the workbench (5) directly facing the bidirectional screw rod (304).

3. A concrete early crack resistance test device according to claim 1, characterized in that: Two electric cylinders (6) are symmetrically mounted on the upper end of the workbench (5) and located on both sides of the placement groove (9); a test pressing block (1) for performing a crack resistance test on the finished concrete block is mounted on the telescopic parts of the two electric cylinders (6).

4. A concrete early crack resistance test device according to claim 1, characterized in that: A material receiving cavity (10) is also provided in the workbench (5) directly below the placement groove (9), and the material receiving cavity (10) is communicated with the placement groove (9).

5. A concrete early crack resistance test device according to claim 1, characterized in that: A double-leaf door (7) is also installed in the middle of one side wall of the workbench (5) via a hinge, and an operation panel (4) is installed on the workbench (5) on the upper side of the door (7).

6. A concrete early crack resistance test device according to claim 1, characterized in that: The telescopic support plate (801) is bolted to the telescopic portion of the second electric telescopic rod (802); the portion of the telescopic support plate (801) connected to the second electric telescopic rod (802) is a concave structure; the telescopic support plate (801) is slidably connected to the storage groove (803).

7. A concrete early crack resistance test device according to claim 1, characterized in that: The fixing portion of the electric telescopic rod 1 (202) is bolted to the vertical plate (201), and the telescopic portion of the electric telescopic rod 1 (202) is bolted to the push plate (203).

8. A concrete early crack resistance test device according to claim 2, characterized in that: The bidirectional screw rod (304) is slidably connected to the slide groove (301) and is connected to the motor (303) via a coupling; the bidirectional screw rod (304) passes through the clamping plate (302) and is threadedly connected to the clamping plate (302).

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