A sample box pulling structure for a cement curing box used for detection

Abstract

The present application relates to a pulling and pushing structure for a sample box of a cement curing box for testing, belonging to the technical field of cement testing. It includes a curing box and a curing rack. A number of pulling grooves are formed on the curing rack, and sample boxes are slidably arranged in a number of the pulling grooves. A handle is installed at one end of each sample box. Two support pulleys are arranged on the side walls of a number of the pulling grooves. Two L-shaped bar frames are symmetrically installed on the outer side of each sample box. The bar frame includes a horizontal part and a vertical part. The bottom of the horizontal part is in movable abutment with the support pulley. A chute is formed on the side of the vertical part away from the sample box, and a slider is slidably connected in the chute. A spring is connected between the slider and the side wall of the chute away from the handle end. A limiting component is arranged on the slider. The present application improves the pulling and pushing structure of the sample box in the cement curing box, avoiding the sample box being easily separated from the curing rack during the pulling and pushing process, thus causing the accidental dropping of the sample box. Moreover, the sample box has elastic buffering when being pulled and pushed, preventing the cement in the sample box from splashing out when the pulling and pushing speed is too fast.

Description

Technical Field

[0001] This application relates to the field of cement testing technology, and particularly to a pulling structure for the sample box of a cement curing box for testing. Background Art

[0002] A cement curing box is a device used to provide a constant temperature and humidity, mainly for the curing of cement blocks to ensure the best hardening effect under specific environmental conditions. A cement curing box usually consists of an inner cavity, a partition rack, an outer shell, a refrigeration compressor, an ultrasonic humidifier, an electric heating tube heater, a temperature and humidity control instrument, etc. It can provide an environment with a constant temperature and humidity to ensure the strength and durability of cement components during the curing period.

[0003] During the cement production process, it is often necessary to conduct sampling tests through a cement curing box to ensure that the produced cement meets the standards. In order to improve the curing efficiency during the cement testing process, multiple drawer-type sample boxes that can be pulled out are usually provided inside the curing box in the prior art to facilitate batch testing of cement under controlled variables.

[0004] However, since the sample box mainly contains water liquid during cement curing, when frequently pulling out the sample box to add samples and observe the curing situation, the sample box often accidentally falls off because the pulling structure of the sample box is relatively loose. This not only causes waste of resources but also may injure the operator in some cases. Therefore, it is urgent to improve the pulling structure of the cement sample box. Summary of the Invention

[0005] In order to improve the pulling structure of the sample box in the cement curing box, so that it can be opened to the maximum extent for easy access to samples and at the same time ensure the stable connection of the pulling structure and reduce the probability of accidental dropping of the sample box, this application provides a pulling structure for the sample box of a cement curing box for testing.

[0006] The pulling structure for the sample box of a cement curing box for testing provided by this application adopts the following technical solution:

[0007] A sample box pulling structure for a cement curing box for detection, comprising a curing box and a curing rack arranged in the curing box. A plurality of pulling slots are arranged in an array on the curing rack, and sample boxes are slidably arranged in the plurality of pulling slots. A handle convenient for human hands to hold is installed at one end of the sample box. Two support pulleys are symmetrically and rotatably arranged on the two side walls of the plurality of pulling slots along the vertical direction. Two L-shaped bar frames are symmetrically installed on the two opposite outer sides of the sample box. The bar frame includes a horizontally connected part and a vertically connected part. The bottom of the horizontally connected part is in movable contact with the support pulley. A chute is arranged along the length direction on the side of the vertically connected part away from the sample box. A slider is slidably connected in the chute. A spring is connected between the slider and the side wall of the chute away from the handle end. A limiting component is arranged on the slider to prevent the sample box from slipping out of the pulling slot and to achieve the pulling buffer of the sample box.

[0008] Optionally, the limiting component includes a clamping block rotatably arranged on the side of the slider away from the sample box along the circumferential direction and a positioning pin detachably penetrating through the clamping block. The inner side of the clamping block is an arc-shaped structure matching the shape of the support pulley. A first pin hole and a second pin hole both dimensionally matching the positioning pin are arranged on the slider. One end of the positioning pin penetrating through the clamping block is clamped in the first pin hole or the second pin hole;

[0009] When the positioning pin is located in the first pin hole, the clamping block abuts against the side of the support pulley close to the handle along the length direction of the sample box;

[0010] When the positioning pin is located in the second pin hole, the clamping block abuts against the side of the support pulley away from the handle along the length direction of the sample box.

[0011] Optionally, the positioning pin is fixedly connected to the clamping block, and a compression spring is connected to one end of the positioning pin close to the sample box. A hemispherical contact point dimensionally matching both the first pin hole and the second pin hole is connected to the end of the compression spring away from the positioning pin. The contact point can be completely retracted into the clamping block.

[0012] Optionally, a plurality of rollers are rotatably arranged on the inner side of the clamping block close to the support pulley, and the plurality of rollers are all in contact with the support pulley.

[0013] Optionally, when the spring is in a normal state, the distance between the slider and the handle is between one-half and two-thirds of the total length of the sample box.

[0014] Optionally, a retaining strip is integrally connected to the inner side wall of the sample box along the circumferential direction to prevent the cement slurry in the sample box from splashing out during the pulling process of the sample box.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] While ensuring that the sample box can be quickly disassembled, the present application improves the connection structure between the sample box and the curing rack, so that the tester will not accidentally pull out the sample box from the drawing slot when pulling the sample box, enhancing the safety and practicality of the overall structure of the cement curing operation;

[0017] The present application adds a buffer structure to the sample box, so that when the tester pulls the sample box, the sample box has a buffer repulsive force, avoiding the result that the moving speed of the sample box is too fast and causing the cement slurry inside it to splash out, ensuring the smoothness of the pulling process;

[0018] The sample box pulling structure of the present application is simply installed and can conveniently separate the sample box from the curing rack, facilitating the installation and disassembly of the sample box. Description of the Drawings

[0019] Figure 1 is the overall structure schematic diagram of a sample box pulling structure of a cement curing box for testing in the present application.

[0020] Figure 2 is Figure 1 the cross-sectional view at A-A in

[0021] Figure 3 is the overall structure when the sample box pulling structure of a cement curing box for testing in the present application is normally in the drawing slot.

[0022] Figure 4 is the exploded view of the sample box pulling structure of a cement curing box for testing in the present application.

[0023] Figure 5 is the schematic diagram of the connection structure between the sample box and the support pulley when the sample box is not limited.

[0024] Figure 6 is the schematic diagram of the connection structure between the sample box and the support pulley when the sample box is limited.

[0025] Figure 7 is the structural view of the clamping block of a sample box pulling structure of a cement curing box for testing in the present application.

[0026] Description of the reference numerals: 1, curing box; 11, box door; 2, curing rack; 21, drawing slot; 3, sample box; 31, handle; 32, retaining bar; 4, support pulley; 5, bar rack; 51, horizontal part; 52, vertical part; 521, chute; 6, slider; 61, pin hole one; 62, pin hole two; 7, spring; 8, limiting component; 81, clamping block; 811, roller; 82, positioning pin; 83, compression spring; 84, clamping contact point. Detailed implementation manners

[0027] The following further elaborates on this application in conjunction with the appended Figures 1-7 drawings for a more detailed description.

[0028] An embodiment of this application discloses a structure for pulling out and inserting a sample box of a cement curing box for testing.

[0029] Referring to Figure 1 , a structure for pulling out and inserting a sample box of a cement curing box for testing includes a curing box 1 placed on the ground and a curing rack 2 installed inside the curing box 1. The curing box 1 is hinged with a box door 11, and a closed cement curing environment can be formed inside it. A plurality of pulling slots 21 are arranged in an array on one side of the curing rack 2 close to the box door 11, and a sample box 3 for placing cement is slidably arranged in each pulling slot 21. The curing box 1 in this application can meet the requirement of simultaneously cultivating multiple cement samples, improving the curing efficiency.

[0030] Referring to Figure 2 and Figure 3 , a handle 31 is integrally connected to one side of the sample box 3 close to the box door 11, facilitating manual gripping and easily adding curing materials.

[0031] Preferably, a retaining strip 32 is integrally connected to the inner side of the sample box 3 along the circumferential direction. When the sample box 3 moves too fast or shakes violently, the retaining strip 32 can effectively prevent a large amount of internal slurry from spilling out, playing a protective role.

[0032] Referring to FIGS. 2 and Figure 3 , two support pulleys 4 are symmetrically and rotatably installed on the opposite side walls of a plurality of pulling slots 21 in the vertical direction. The two support pulleys 4 are respectively in contact with the two sides of the sample box 3, used to support the sample box 3 and change the sliding during pulling out and inserting of the sample box 3 into rolling, facilitating pulling out and reducing wear.

[0033] Two L-shaped bar frames 5 are integrally and symmetrically connected to the sample box 3. The tops of the two support pulleys 4 are respectively in rolling contact with the bottom sides of the parts of the two bar frames 5 protruding out of the sample box 3 in the horizontal direction, so as to prevent the support pulleys 4 from directly contacting the sample box 3 and increasing wear.

[0034] Referring to Figure 4 , further, the bar frame 5 includes a horizontally connected transverse part 51 and a vertically connected vertical part 52 located below the transverse part 51. One side of the vertical part 52 away from the transverse part 51 is fixedly connected to the side wall of the sample box 3, and the support pulley 4 is movably in contact with the bottom side of the transverse part 51. A sliding groove 521 is opened in the vertical part 52 along the length direction of the sample box 3 away from the sample box 3. A sliding block 6 is slidably arranged in the sliding groove 521, and a spring 7 is connected between the side of the sliding block 6 away from the handle 31 and the side wall of the sliding groove 521.

[0035] A limiting component 8 is provided on the sliding block 6 to prevent the sample box 3 from accidentally coming out of the drawing slot 21 during the drawing process. At the same time, the structure in which the limiting component 8 is linked with the spring 7 can also provide buffering for the sample box 3, avoiding the situation that the moving speed of the sample box 3 is too fast when the tester applies too much force, and then the cement slurry in the box splashes out.

[0036] Refer to Figure 4 , specifically, the limiting component 8 includes a clamping block 81 rotatably arranged on the side of the sliding block 6 away from the sample box 3 along the circumferential direction and a positioning pin 82 detachably penetrating through the clamping block 81. The positioning pin 82 is used to fix the position of the clamping block 81 on the sliding block 6. The inner side of the clamping block 81 is an arc structure and is in abutting fit with one side of the support pulley 4 along the length direction of the sample box 3 to form a clamping effect.

[0037] A first pin hole 61 and a second pin hole 62 that are both in clamping fit with the positioning pin 82 are formed on the sliding block 6. The first pin hole 61 and the second pin hole 62 respectively correspond to two positions of the positioning pin 82. One side of the positioning pin 82 penetrating through the clamping block 81 penetrates into the first pin hole 61 or the second pin hole 62 to limit the rotation of the clamping block 81 around the center of the sliding block 6. Among them, the first pin hole 61 is located at one end of the side of the sliding block 6 close to the handle 31, and the second pin hole 62 is located at the opposite end on the same side of the sliding block 6.

[0038] Refer to Figure 5 , when the limit pin is located in the first pin hole 61, the clamping block 81 is located on the side of the sliding block 6 close to the handle 31. At this time, the clamping block 81 does not limit the removal of the sample box 3, and the tester can conveniently remove or install the sample box 3, making it more convenient to clean the sample box 3 and place large maintenance materials.

[0039] Refer to Figure 6 , when the limit pin is located in the second pin hole 62, the clamping block 81 is located on the side of the sliding block 6 away from the handle 31. At this time, the clamping block 81 abuts against the support pulley 4 movably. When the sample box 3 is drawn, the clamping block 81 and the support pulley 4 form a clamping structure, and the sample box 3 cannot be smoothly drawn out and removed.

[0040] At the same time, when the tester draws the sample box 3 outwards, the support pulley 4 presses against the clamping block 81 tightly. Since the clamping block 81 is arranged on the sliding block 6, a reverse force will be given to the sample box 3 under the action of the spring 7, slowing down the drawing speed of the sample box 3 and improving the buffering effect.

[0041] Refer to Figure 4 and Figure 6, Further, to make it more convenient for the inspectors to operate and avoid the complex operation of inserting and removing the positioning pin 82 back and forth, the positioning pin 82 is designed to be fixedly connected to the clamping block 81. Specifically, a compression spring 83 is connected to one end of the positioning pin 82 close to the sample box 3, and a clamping contact point 84 that is dimensionally matched with both the first pin hole 61 and the second pin hole 62 is connected to the end of the compression spring 83 away from the positioning pin 82. The clamping contact point 84 is of a hemispherical structure, so that when the clamping block 81 is fixed at any position in the first pin hole 61 and the second pin hole 62 on the slider 6, a part of the end of the clamping contact point 84 away from the compression spring 83 is located in the first pin hole 61 or the second pin hole 62, and when the compression spring 83 contracts, it can completely enter the clamping block 81.

[0042] When it is necessary to change the position of the clamping block 81, the inspector only needs to press the clamping block 81 to make it rotate, and the operation is simple. And since the acting force of the support pulley 4 on the clamping block 81 is a lateral force, the clamping block 81 will not move easily, and the structure is stable.

[0043] At the same time, there is a gap between the bottom of the sample box and the drawing slot 21. Since the length of the clamping block 81 is large, when removing the sample box, the inspector can also press the clamping block 81 and the support pulley 4 simultaneously by hand to make them rotate synchronously, making the operation of moving the clamping block 81 more convenient.

[0044] Refer to Figure 7 , Preferably, a plurality of rollers 811 are rotatably arranged along the inner arc surface of the clamping block 81 close to the support pulley 4. The plurality of rollers 811 are all in contact with the support pulley 4 to change the friction between the clamping block 81 and the support pulley 4 into rolling, and extend the service life of the clamping block 81.

[0045] Refer to Figure 6 and Figure 7 , Preferably, when the spring 7 is in a normal state, the distance between the slider 6 and the handle 31 is between one-half and two-thirds of the total length of the sample box 3 facing away from the handle 31, so as to ensure that the clamping block 81 can be easily moved while preventing the inspector from generating a reverse elastic force prematurely when pulling the sample box 3, increasing the operation difficulty of the inspector.

[0046] This structure makes it easier for the inspector to put small-sized curing materials into the sample box 3.

[0047] The implementation principle of the sample box drawing structure of a cement curing box for testing in the embodiment of the present application is:

[0048] In the initial state, the positioning pin 82 is located in the first pin hole 61. At this time, the sample box 3 can be smoothly and quickly placed into the sliding slot 21. Then, the clamping block 81 is pushed, and the positioning pin 82 is driven into the second pin hole 62. At this time, the clamping block 81 is located on the side of the support pulley 4 away from the handle 31. The clamping block 81 abuts against the support pulley 4, providing movable limit for the sample box 3 and also buffering for the pulling action of the sample box 3.

[0049] This structure makes the disassembly and assembly of the sample box 3 convenient, and the structure is simple, with high practicability.

[0050] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A pulling and drawing structure of a sample box for a cement curing box for detection, comprising a curing box (1) and a curing rack (2) arranged in the curing box (1). A plurality of pulling and drawing grooves (21) are arranged in an array on the curing rack (2), and sample boxes (3) are slidably arranged in the plurality of pulling and drawing grooves (21). A handle (31) convenient for human hands to hold is installed at one end of the sample box (3), and the characteristics are as follows: Two support pulleys (4) are symmetrically and rotatably arranged on the two side walls of several of the sliding grooves (21) in the vertical direction. Two L-shaped bar frames (5) are symmetrically installed on the two opposite outer sides of the sample box (3). The bar frame (5) includes a horizontally connected horizontal part (51) and a vertically connected vertical part (52). The bottom of the horizontal part (51) is in movable abutment with the support pulley (4). A sliding groove (521) is provided along the length direction on the side of the vertical part (52) away from the sample box (3). A slider (6) is slidably connected in the sliding groove (521). A spring (7) is connected between the slider (6) and the side wall of the sliding groove (521) away from the handle (31). A limiting component (8) for preventing the sample box (3) from slipping out of the sliding groove (21) and realizing the pulling buffer of the sample box (3) is provided on the slider (6). The limiting component (8) includes a clamping block (81) rotatably arranged on the side of the slider (6) away from the sample box (3) along the circumferential direction and a positioning pin (82) detachably penetrating through the clamping block (81). The inner side of the clamping block (81) is an arc-shaped structure that fits the shape of the support pulley (4). A first pin hole (61) and a second pin hole (62) that are both dimensionally matched with the positioning pin (82) are provided on the slider (6). One end of the positioning pin (82) penetrating through the clamping block (81) is clamped in the first pin hole (61) or the second pin hole (62). When the positioning pin (82) is located in the first pin hole (61), the clamping block (81) abuts against the side of the support pulley (4) close to the handle (31) along the length direction of the sample box (3). When the positioning pin (82) is located in the second pin hole (62), the clamping block (81) abuts against the side of the support pulley (4) away from the handle (31) along the length direction of the sample box (3).

2. The sample box pulling structure of a cement curing box for detection according to claim 1, characterized in that: The positioning pin (82) is fixedly connected to the clamping block (81), and a compression spring (83) is connected to one end of the positioning pin (82) close to the sample box (3). A hemispherical contact point (84) that is dimensionally matched with both the first pin hole (61) and the second pin hole (62) is connected to the end of the compression spring (83) away from the positioning pin (82). The contact point (84) can be completely retracted into the clamping block (81).

3. The sample box pulling structure for a cement curing box used for detection according to claim 2, wherein: A plurality of rollers (811) are rotatably arranged on the inner side of the clamping block (81) close to the support pulley (4), and a plurality of the rollers (811) are all in abutment with the support pulley (4).

4. A sample box pulling structure for a cement curing box used for detection according to claim 3, characterized in that: When the spring (7) is in a normal state, the distance between the slider (6) and the handle (31) is between one-half and two-thirds of the total length of the sample box (3).

5. The sample box pulling structure of a cement curing box for detection according to claim 1, characterized in that: A retaining strip (32) is integrally connected to the inner side wall of the sample box (3) along the circumferential direction to prevent the cement slurry in the sample box (3) from splashing out during the pulling process of the sample box (3).

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