Spacing adjusting device for supporting plate of cement concrete curing box

Abstract

The utility model relates to cement quality detection technical field, concretely is a kind of cement concrete curing box's supporting plate spacing adjusting device, including box, the multiple fixed plates of symmetry fixed connection on the inner wall of the box and the supporting plate of installation in the top of the fixed plate, two jacking adjusting mechanisms are installed on each the fixed plate, the jacking adjusting mechanism includes the rotary drum that is rotatably connected in the fixed plate, spiral groove is set up on the lateral wall of the rotary drum, the upper end of the rotary drum is inserted into and has extension cylinder, guiding pin is fixedly connected on the outer lateral wall of the extension cylinder, the guiding pin is located in the spiral groove and can slide in the spiral groove. The utility model solves the problem that the existing curing box is laborious when operating in the supporting plate adjusting distance, simultaneously solves the problem that supporting plate lacks horizontal calibration function, leading to the problem that supporting plate can appear inclination, further influence the accuracy of cement test block strength result.

Description

Technical Field

[0001] This utility model relates to the field of cement quality testing technology, specifically to a device for adjusting the spacing of the support plates of a cement concrete curing box. Background Technology

[0002] Currently, cement quality testing is usually divided into physical performance testing and chemical performance testing. Among the physical performance testing items, mortar strength testing is one of the most important mandatory testing items for all types of cement. Its basic testing principle is: under standard conditions, standard mortar specimens are prepared using standard cement mortar mix ratios, and then placed in cement (concrete) curing chambers for curing to the specified age before conducting flexural strength and compressive strength tests.

[0003] The patent publication number "CN221850623U" discloses "A cement concrete curing box for processing autoclaved aerated concrete slabs, belonging to the field of cement concrete processing equipment, used to solve the problems of difficulty in collecting and cleaning condensate on the top of the box and difficulty in adjusting the distance between the support plates; the utility model includes a box body, with multiple support plates movably installed inside the box body, and a cleaning component fixedly installed on the top of the box body, located above the support plates. A feed inlet is opened on one side of the box body, and a rotating door is movably installed at the feed inlet. The utility model uses the cleaning component to scrape off the condensate on the inner wall of the top of the box body with a scraper, and at the same time uses a collection chamber and a guide channel to guide the condensate to a collection box, and then discharges it through a water outlet pipe, thereby achieving the collection and cleaning of condensate on the top of the box body. At the same time, by rotating the rotating block, the moving rod is driven upward by the screw thread, thereby lifting the support plates and thus achieving the adjustment of the distance between the support plates." The patent has the following problems: 1. The rotating block is close to the bottom of the support plate, making it difficult for workers to reach in with their hands or tools, and the operation is laborious; 2. The support plate may tilt after the height is adjusted. The unevenness of the support plate will cause the cement test block to be placed unstable or have uneven mass density, which will affect the accuracy of the cement test block strength results. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a support plate spacing adjustment device for a cement concrete curing box. This solves the problem of laborious operation when adjusting the support plate distance in existing curing boxes, and also solves the problem of the lack of a horizontal calibration function for the support plate, which may cause the support plate to tilt and thus affect the accuracy of the cement test block strength results.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a support plate spacing adjustment device for a cement concrete curing box, comprising a box body, multiple fixed plates symmetrically fixedly connected to the inner wall of the box body, and support plates installed above the fixed plates. Each fixed plate is equipped with two lifting adjustment mechanisms. Each lifting adjustment mechanism includes a rotating cylinder rotatably connected to the fixed plate. A spiral groove is formed on the side wall of the rotating cylinder. An extension cylinder extends into the upper end of the rotating cylinder. A guide pin is fixedly connected to the outer side wall of the extension cylinder. The guide pin is located in the spiral groove and can slide in the spiral groove. A sleeve adapted to the top end of the extension cylinder is provided at the bottom of the support plate. A level for calibrating the levelness of the support plate is installed at the upper end of the support plate.

[0006] The above structural design incorporates two lifting and adjusting mechanisms on each fixed plate. Utilizing the cooperation between the spiral groove on the side wall of the rotating drum and the guide pin on the extension drum, the extension drum can smoothly rise and fall during rotation, thereby adjusting the height of the support plate. This makes operation more convenient and labor-saving. The level on the support plate calibrates its levelness, preventing unevenness in the cement block's density and ensuring the accuracy of strength testing results. Furthermore, the support plate can be removed from the housing, facilitating cleaning after use.

[0007] Preferably, the upper end of the rotating drum passes through the fixed plate and a limit ring is fixedly connected to the outer side wall of the rotating drum, the lower end of the rotating drum passes through the fixed plate and is provided with a knob, and the side wall of the knob is provided with anti-slip texture.

[0008] By adopting the above structural design, the axial displacement of the rotating drum is limited by the limiting ring, which enhances the structural stability of the lifting and adjusting mechanism; the knob with anti-slip texture at the lower end of the rotating drum increases the friction force when the operator rotates the rotating drum, making the distance adjustment operation more convenient and labor-saving.

[0009] Preferably, the fixing plate has a vertical groove on its inner wall near the guide pin, and the guide pin can slide along the groove.

[0010] With the above structural design, the vertical groove on the inner wall of the fixed plate provides vertical guidance for the guide pin, ensuring that the extension cylinder always remains vertically raised and lowered when the guide pin slides along the groove, further improving the stability and verticality of the support plate during the lifting process.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By installing two lifting adjustment mechanisms on each fixed plate, and utilizing the cooperation between the spiral groove on the side wall of the rotating drum and the guide pin on the extension drum, the extension drum can be smoothly raised and lowered during rotation, thereby adjusting the height of the support plate, making operation more convenient and labor-saving. The level on the support plate can calibrate the levelness of the support plate, avoiding unevenness of the support plate that could lead to uneven density of the cement test blocks, and ensuring the accuracy of the cement test block strength test results. At the same time, the support plate can be removed from the box, making it convenient for staff to clean the support plate after use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal structure of the housing of this utility model; Figure 2 This is a schematic diagram of the lifting and adjusting mechanism of this utility model; Figure 3 This is a schematic diagram of the internal structure of the fixing plate of this utility model; Figure 4 This is a schematic diagram of the top structure of the support plate of this utility model; Figure 5 This is a schematic diagram of the bottom structure of the support plate of this utility model. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-5 This utility model provides a technical solution: a support plate spacing adjustment device for a cement concrete curing box, including a box body 1, a support plate 2, a fixing plate 3 and a lifting adjustment mechanism 4.

[0015] The box body 1 is the main structure of the curing box. Multiple fixing plates 3 are symmetrically fixed to two opposite inner side walls of the box body 1 for mounting the lifting and adjusting mechanism 4. The support plate 2 is mounted on the top of the lifting and adjusting mechanism 4 via a sleeve 201 at its bottom, for supporting cement specimens. A level 202 is also mounted on the upper surface of the support plate 2 for visually displaying its levelness.

[0016] Each of the fixed plates 3 is equipped with two lifting adjustment mechanisms 4, which together support a support plate 2 to ensure smooth lifting.

[0017] The lifting and adjusting mechanism 4 includes a rotating cylinder 401, an extension cylinder 402, and a guide pin 404. The rotating cylinder 401 is rotatably connected to a hole in the fixed plate 3 via a bearing or bushing. The lower end of the rotating cylinder 401 passes through the fixed plate 3 and is fixedly connected to a knob 405, which the operator can rotate to drive the entire device. The side wall of the knob 405 is machined with anti-slip texture to increase friction and facilitate the application of force. A limit ring 406 is also fixedly connected to the outer side wall of the rotating cylinder 401. The limit ring 406 is located above the fixed plate 3 and is used to prevent the rotating cylinder 401 from moving vertically, ensuring that it can only rotate.

[0018] A continuous spiral groove 403 is formed on the side wall of the rotating cylinder 401. The lower end of the extension cylinder 402 is inserted into the upper end of the rotating cylinder 401, and the two are in a relatively movable sleeve relationship. One end of the guide pin 404 is fixedly connected to the outer side wall of the extension cylinder 402, and the other end extends into the spiral groove 403 of the rotating cylinder 401 and can slide within the groove.

[0019] Furthermore, a vertical groove 301 is formed on the inner wall of the fixed plate 3 near the guide pin 404. After passing through the spiral groove 403, the end of the guide pin 404 extends into this groove 301. The function of the groove 301 is to restrict the rotation of the guide pin 404 and the extension cylinder 402 fixed thereto, allowing them to move only in a vertical straight line along the trajectory of the groove 301.

[0020] The bottom of the support plate 2 is fixedly connected to a sleeve 201 that matches the top end of the extension tube 402. The top end of the extension tube 402 is inserted into the sleeve 201, thereby supporting the support plate 2. The operator can lift and remove the support plate (2) for cleaning.

[0021] Working principle: When the height of a support plate 2 needs to be adjusted, the operator can directly rotate the knob 405 or first remove the support plate 2 and then rotate the knobs 405 of the four lifting adjustment mechanisms 4 supporting the support plate 2. The rotational action drives the rotating drum 401 to rotate. Since the end of the guide pin 404 is restricted within the vertical slide groove 301 of the fixed plate 3 and cannot rotate, the rotational motion of the rotating drum 401 is converted into the linear lifting and lowering motion of the guide pin 404 and the extension drum 402 in the vertical direction through the cooperation of the spiral groove 403 and the guide pin 404.

[0022] After adjusting the height, the operator places the support plate 2 back into the housing 1. The sleeve 201 of the support plate 2 is installed at the top of the extension tube 402. The operator observes the level 202 on the support plate 2 to determine if it is level. If the level 202 is not level, one or more knobs 405 of the lifting adjustment mechanism 4 can be finely adjusted until the bubble in the level 202 is centered, indicating that the support plate 2 is completely level. This ensures that all cement specimens are cured in a level state, guaranteeing uniform specimen density and thus improving the accuracy and reliability of subsequent strength testing results.

[0023] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for adjusting the spacing of support plates in a cement concrete curing box, comprising a box body (1), a plurality of fixing plates (3) symmetrically fixedly connected to the inner wall of the box body (1), and support plates (2) installed above the fixing plates (3), characterized in that: Each of the fixed plates (3) is equipped with two lifting adjustment mechanisms (4). The lifting adjustment mechanism (4) includes a rotating cylinder (401) rotatably connected in the fixed plate (3). A spiral groove (403) is provided on the side wall of the rotating cylinder (401). An extension cylinder (402) extends into the upper end of the rotating cylinder (401). A guide pin (404) is fixedly connected to the outer side wall of the extension cylinder (402). The guide pin (404) is located in the spiral groove (403) and can slide in the spiral groove (403). A sleeve (201) adapted to the top end of the extension cylinder (402) is provided at the bottom of the support plate (2). A level (202) for calibrating the levelness of the support plate (2) is installed at the upper end of the support plate (2).

2. The device for adjusting the spacing of the support plates of a cement concrete curing box according to claim 1, characterized in that: The upper end of the rotating cylinder (401) passes through the fixed plate (3) and a limit ring (406) is fixedly connected to the outer side wall of the rotating cylinder (401). The lower end of the rotating cylinder (401) passes through the fixed plate (3) and is provided with a knob (405). The side wall of the knob (405) is provided with anti-slip texture.

3. The device for adjusting the spacing of the support plates of a cement concrete curing box according to claim 1, characterized in that: The fixing plate (3) has a vertical groove (301) on its inner wall near the guide pin (404), and the guide pin (404) can slide along the groove (301).

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