Concrete freezing and thawing testing machine facilitating sample taking and placing

Abstract

The utility model relates to the technical field of concrete freezing and thawing tests, in particular to a concrete freezing and thawing testing machine convenient for taking and placing samples, which comprises a testing machine body and a concrete test piece barrel, the testing machine body is provided with a placing cavity, a drawing placing box is inserted in the placing cavity in a sliding manner, one end of the drawing placing box is fixedly provided with a connecting block, and the connecting block is connected with the concrete test piece barrel. A grounding roller is mounted at the bottom of the connecting block, an elastic self-locking connecting assembly is fixedly mounted on the side wall of the connecting block, one end of the elastic self-locking connecting assembly is connected with a positioning block mounted on the testing machine body, a vertical limiting groove is formed in the inner wall of the drawing placement box, and a lifting adjusting assembly is mounted in the vertical limiting groove; a limiting frame is mounted on the lifting adjusting assembly, and the concrete test piece barrel is inserted into the limiting frame; according to the concrete sample barrel taking-out device, the drawing placing box and the concrete sample barrel can be limited, concrete sample falling caused by shaking of the concrete sample barrel is avoided, the taking-out convenience of the concrete sample barrel is effectively improved, and the practicability is higher.

Description

Technical Field

[0001] The utility model relates to a concrete freeze-thaw testing machine which is convenient for taking and placing samples and belongs to the technical field of concrete freeze-thaw testing. Background Art

[0002] The concrete freeze-thaw tester is a device used to evaluate the frost resistance of concrete. Its main function is to detect the performance changes of concrete specimens after multiple freeze-thaw cycles by simulating freeze-thaw cycles, that is, alternating between cold and warm environments. The working principle of this equipment is to first put the concrete specimens that meet the requirements into the tester and soak them in water for a period of time so that the specimens can fully absorb water; then, put the specimens in a freezing environment for freezing, and after a certain period of time, transfer the specimens to a warm environment for thawing. Such freeze-thaw cycles will be repeated to simulate the freeze-thaw effect in the actual environment.

[0003] The existing concrete freeze-thaw testing machine usually opens the testing machine by flipping up the cover, and the concrete sample needs to be taken out and placed in the vertical direction. Due to the limited space in the testing machine, it is easy to cause inconvenience in taking and placing the concrete specimen barrel. At the same time, when multiple concrete specimen barrels are evenly placed in the testing machine, it is necessary to install a limit frame in the testing machine to limit the concrete specimen barrel. The limit frame in the testing machine is fixed in position. Although it can limit the upper side of the concrete specimen barrel, the upper side of the concrete specimen barrel is less exposed, which makes it inconvenient to take out the concrete specimen barrel, and there are certain disadvantages in the use process.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a concrete freeze-thaw testing machine that is convenient for taking and placing samples in order to solve the above-mentioned problems. The utility model has the advantages that a pull-out placement box can be pulled out from the testing machine body, and a limit frame can be moved to the lower side of the concrete specimen barrel, so that the concrete specimen barrel can be taken out more conveniently. At the same time, the pull-out placement box and the concrete specimen barrel can be limited to prevent the concrete specimen from falling due to the shaking of the concrete specimen barrel.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a concrete freeze-thaw testing machine which is convenient for taking and placing samples, comprising a testing machine body and a concrete specimen barrel, the testing machine body is provided with a placement cavity, the placement cavity is slidably inserted with the pull-out placement box, one end of the pull-out placement box is fixedly installed with the connecting block, the bottom of the connecting block is installed with the grounding roller, the side wall of the connecting block is fixedly installed with the elastic self-locking connection component, one end of the elastic self-locking connection component is connected to the positioning block installed on the testing machine body, a vertical limit groove is opened on the inner wall of the pull-out placement box, the lifting and lowering adjustment component is installed in the vertical limit groove, the lifting and lowering adjustment component is installed with the limit frame, and the concrete specimen barrel is inserted in the limit frame.

[0007] Furthermore, in order to enable the side support plate to slide laterally on the transverse fixing column, the elastic self-locking connection assembly includes the extending mounting plate and the extending limit plate, and the extending mounting plate and the extending limit plate are both fixed on the connecting block, and the transverse fixing column is fixedly installed on one end of the extending mounting plate, and the side support plate is slidably sleeved on the transverse fixing column.

[0008] Furthermore, in order to press the side support plate against the limit stop by means of the self-locking spring, the limit stop is fixedly mounted on one end of the transverse fixing column, and the side support plate is elastically connected to the protruding mounting plate through the self-locking spring.

[0009] Furthermore, in order to enable the side support plate to slide on the transverse fixed column by controlling the Z-shaped handle, the Z-shaped handle is fixedly mounted on one end of the side support plate.

[0010] Furthermore, in order to limit the Z-shaped pin by the extension limit plate, and at the same time, the extension mounting plate can be fixedly connected to the positioning block through the Z-shaped pin, the Z-shaped pin is fixedly installed on the other end of the side support plate, one end of the Z-shaped pin is slidably inserted into the extension limit plate, and the other end of the Z-shaped pin is inserted into the connecting pin hole opened on the positioning block.

[0011] Furthermore, in order to control the micro motor so that the vertical threaded rod can rotate in the vertical limit groove through the rotating joint, the lifting and lowering adjustment assembly includes the micro motor and the vertical threaded rod, the micro motor is fixed on the inner wall of one end of the vertical limit groove, the vertical threaded rod is rotatably installed on the inner wall of the other end of the vertical limit groove through the rotating joint, and one end of the vertical threaded rod is fixedly connected to the output shaft of the micro motor.

[0012] Furthermore, in order to control the rotation of the vertical threaded rod to drive the threaded slider to slide up and down in the vertical limit groove, so as to adjust the height of the limit frame, the threaded slider is installed on the vertical threaded rod, the threaded slider is slidably engaged in the vertical limit groove, and the limit frame is fixed on the threaded slider.

[0013] Furthermore, in order to observe the situation in the placement cavity through the transparent observation frame, the transparent observation frame is fixedly installed on the testing machine body, and the transparent observation frame is located above the placement cavity.

[0014] The technical effects and advantages of the utility model are as follows: the pull-out placement box can be pulled out from the testing machine body through the elastic self-locking connection component, making it more convenient to take out the concrete specimen barrel, and at the same time, the pull-out placement box can be fixed on the testing machine body to avoid the concrete sample from falling due to the shaking of the pull-out placement box during use; the height of the limit frame can be adjusted by the lifting and adjusting component, so that the limit frame can be moved to the upper side of the concrete specimen barrel to limit the concrete specimen barrel, and at the same time, the limit frame can be moved to the lower side of the concrete specimen barrel, so that the upper side of the concrete specimen barrel is more exposed, further improving the convenience of taking out the concrete specimen barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the pull-out placement box pull-out test machine body of the utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the grounding roller of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the elastic self-locking connection assembly of the utility model;

[0019] Figure 5 This is a structural schematic diagram of the lifting and adjusting component of the utility model;

[0020] In the figure: 1. Testing machine body; 2. Concrete specimen barrel; 3. Pull-out placement box; 4. Connection block; 5. Ground roller; 6. Elastic self-locking connection assembly; 601. Extending mounting plate; 602. Extending limit plate; 603. Horizontal fixing column; 604. Side support plate; 605. Limit block; 606. Self-locking spring; 607. Z-type grip; 608. Z-type pin rod; 7. Positioning block; 8. Lifting and adjusting assembly; 801. Micro motor; 802. Vertical threaded rod; 803. Rotating joint; 804. Threaded slider; 9. Limit frame; 10. Transparent observation frame. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 5 As shown, a concrete freeze-thaw testing machine for convenient sample placement and removal comprises a testing machine body 1 and a concrete specimen barrel 2. A placement cavity is provided on the testing machine body 1, in which a pull-out placement box 3 is slidably inserted, a connecting block 4 is fixedly installed at one end of the pull-out placement box 3, and a grounding roller 5 is installed at the bottom of the connecting block 4. The connecting block 4 is controlled to move toward the outside of the testing machine body 1 so that the pull-out placement box 3 is moved out of the placement cavity, so as to facilitate the removal of the concrete specimen barrel 2 in the pull-out placement box 3, and the grounding roller 5 is rolled on the ground, so as to maintain the horizontal stability of the pull-out placement box 3. An elastic self-locking connection component 6 is fixedly installed on the side wall of the connection block 4, and one end of the elastic self-locking connection component 6 is connected to a positioning block 7 installed on the testing machine body 1. When the pull-out placement box 3 is pushed into the testing machine body 1, the elastic self-locking connection component 6 is used to It is convenient to ensure that the pull-out placement box 3 will not shake during the use of the testing machine body 1, thereby ensuring the stability of the concrete specimen barrel 2. A vertical limit groove is opened on the inner wall of the pull-out placement box 3, and a lifting and adjusting component 8 is installed in the vertical limit groove. A limit frame 9 is installed on the lifting and adjusting component 8, and the concrete specimen barrel 2 is inserted in the limit frame 9. A transparent observation frame 10 is fixedly installed on the testing machine body 1, and the transparent observation frame 10 is located above the placement cavity. When in use, the lifting and adjusting component 8 is controlled to adjust the height of the limit frame 9 so that the limit frame 9 can be moved to the lower side of the concrete specimen barrel 2 to facilitate the removal of the concrete specimen barrel 2. At the same time, the limit frame 9 can be moved to the upper side of the concrete specimen barrel 2 to limit the upper side of the concrete specimen barrel 2 to prevent the concrete specimen barrel 2 from shaking and causing the concrete sample to flow out.

[0023] The elastic self-locking connection component 6 includes an extending mounting plate 601 and an extending limit plate 602, both of which are fixed on the connecting block 4, a transverse fixing column 603 is fixedly installed on one end of the extending mounting plate 601, a side support plate 604 is slidably sleeved on the transverse fixing column 603, a limit stopper 605 is fixedly installed on one end of the transverse fixing column 603, the side support plate 604 is elastically connected to the extending mounting plate 601 through a self-locking spring 606, a Z-shaped handle 607 is fixedly installed on one end of the side support plate 604, and a Z-shaped pin rod 608 is fixedly installed on the other end of the side support plate 604, one end of the Z-shaped pin rod 608 is slidably inserted on the extending limit plate 602, and the Z-shaped pin rod 608 is fixedly installed on one end of the side support plate 604. The other end of 608 is inserted into the connecting pin hole provided on the positioning block 7. When the pull-out placement box 3 is pushed into the placement cavity, the self-locking spring 606 presses the side support plate 604 against the limit stopper 605, and the side support plate 604 drives the Z-shaped pin rod 608 to be inserted into the connecting pin hole provided on the positioning block 7, so as to make the pull-out placement box 3 fixedly connected to the testing machine body 1, thereby improving the stability of the concrete specimen barrel 2 in the pull-out placement box 3. At the same time, the Z-shaped handle 607 is controlled to make the side support plate 604 slide on the horizontal fixing column 603, thereby driving the Z-shaped pin rod 608 to disengage from the connecting pin hole, so as to pull the pull-out placement box 3 out of the testing machine body 1, so as to take out the concrete specimen barrel 2.

[0024] The lifting and lowering adjustment component 8 includes a micro motor 801 and a vertical threaded rod 802. The micro motor 801 is fixed on the inner wall of one end of the vertical limit groove. The vertical threaded rod 802 is rotatably installed on the inner wall of the other end of the vertical limit groove through a rotating joint 803, and one end of the vertical threaded rod 802 is fixedly connected to the output shaft of the micro motor 801. A threaded slider 804 is installed on the vertical threaded rod 802. The threaded slider 804 is slidably engaged in the vertical limit groove. The limit frame 9 is fixed on the threaded slider 804. The micro motor 801 is controlled to be turned on, so that the vertical threaded rod 802 rotates in the vertical limit groove through the rotating joint 803, driving the threaded slider 804 to slide up and down in the vertical limit groove, and adjusting the height of the limit frame 9 so that the limit frame 9 is located on the upper side or lower side of the concrete specimen barrel 2.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] 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 freeze-thaw testing machine that is convenient for taking and placing samples, comprising a testing machine body (1) and a concrete specimen bucket (2), wherein the testing machine body (1) is provided with a placement cavity, and is characterized in that: A drawable placement box (3) is slidably inserted in the placement cavity, a connection block (4) is fixedly installed at one end of the drawable placement box (3), a grounding roller (5) is installed at the bottom of the connection block (4), an elastic self-locking connection component (6) is fixedly installed on the side wall of the connection block (4), one end of the elastic self-locking connection component (6) is connected to a positioning block (7) installed on the testing machine body (1), a vertical limit groove is opened on the inner wall of the drawable placement box (3), a lifting and lowering adjustment component (8) is installed in the vertical limit groove, a limit frame (9) is installed on the lifting and lowering adjustment component (8), and the concrete specimen barrel (2) is inserted in the limit frame (9).

2. The concrete freeze-thaw testing machine that is convenient for taking and placing samples according to claim 1 is characterized in that: The elastic self-locking connection assembly (6) comprises an extending mounting plate (601) and an extending limiting plate (602), wherein the extending mounting plate (601) and the extending limiting plate (602) are both fixed on the connection block (4), a transverse fixing column (603) is fixedly mounted on one end of the extending mounting plate (601), and a side support plate (604) is slidably sleeved on the transverse fixing column (603).

3. The concrete freeze-thaw testing machine that is convenient for taking and placing samples according to claim 2 is characterized in that: A limit stopper (605) is fixedly mounted on one end of the transverse fixed column (603), and the side support plate (604) is elastically connected to the extended mounting plate (601) via a self-locking spring (606).

4. The concrete freeze-thaw testing machine that is convenient for taking and placing samples according to claim 3 is characterized in that: A Z-shaped handle (607) is fixedly mounted on one end of the side support plate (604).

5. The concrete freeze-thaw testing machine that is convenient for taking and placing samples according to claim 4 is characterized in that: A Z-shaped pin rod (608) is fixedly mounted on the other end of the side support plate (604), one end of the Z-shaped pin rod (608) is slidably inserted into the extension limit plate (602), and the other end of the Z-shaped pin rod (608) is inserted into a connecting pin hole provided on the positioning block (7).

6. The concrete freeze-thaw testing machine that is convenient for taking and placing samples according to claim 1 is characterized in that: The lifting and lowering adjustment component (8) comprises a micro motor (801) and a vertical threaded rod (802), wherein the micro motor (801) is fixed to the inner wall of one end of the vertical limit groove, and the vertical threaded rod (802) is rotatably mounted on the inner wall of the other end of the vertical limit groove via a rotating joint (803), and one end of the vertical threaded rod (802) is fixedly connected to the output shaft of the micro motor (801).

7. The concrete freeze-thaw testing machine for convenient sample placement according to claim 6 is characterized in that: A threaded slider (804) is installed on the vertical threaded rod (802), the threaded slider (804) is slidably engaged in the vertical limiting groove, and the limiting frame (9) is fixed on the threaded slider (804).

8. The concrete freeze-thaw testing machine that is convenient for taking and placing samples according to claim 1 is characterized in that: A transparent observation frame (10) is fixedly mounted on the testing machine body (1), and the transparent observation frame (10) is located above the placement cavity.

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