Portable winter concrete temperature adjustable heat preservation box

Abstract

The application relates to the technical field of winter concrete construction, in particular to a portable winter-construction concrete temperature-adjustable heat preservation box, which comprises two box bodies, the two box bodies are located on the two sides of a wall body respectively, the box body comprises a base, a shell, a heat preservation layer, a heat supply source and a pull-and-pull assembly, the shell is installed on the base, the heat preservation layer is arranged on the inner side of the shell, the heat supply source is arranged on the side, away from the shell, of the heat preservation layer, the heat supply source is electrically connected with an external power supply, the shell is provided with an opening, when the box body is used for construction, one side of the opening of the shell abuts against the wall body, a heat preservation bin can be formed between the shell, the base and the wall body; the pull-and-pull assembly is used for connecting and fixing the two box bodies, and the pull-and-pull assembly can make the side, close to each other, of the two box bodies tightly adhere to the wall body. The application has the effect of improving the heat preservation and maintenance effect during winter concrete construction, so as to guarantee the strength effect of the formed concrete.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of winter concrete construction technology, in particular to a portable winter concrete temperature adjustable heat preservation box. BACKGROUND

[0002] Concrete is a commonly used building material, which is formed by mixing sand, cement, gravel and water. Concrete has strict temperature requirements, especially in cold winter. During winter concrete construction, after pouring, there is a risk of freezing inside the concrete due to low temperature, and for large volume concrete, the heat generated by cement hydration is difficult to dissipate due to poor thermal conductivity, which may cause cracks, so it is necessary to heat and maintain the concrete.

[0003] There are many methods for winter concrete heat preservation and maintenance in related technologies, such as warm shed method, heat storage method, steam heating method, electrode heating method, electric heating mold method, far infrared heating method, etc. Among them, the warm shed method is widely used in winter concrete construction.

[0004] The warm shed method is to close all door and window openings and air permeable parts, and continuously warm the enclosed area with a warm air blower for more than 24 hours to achieve heat preservation and maintenance of the concrete. However, the heat preservation effect of the warm shed is not good, the temperature in the warm shed is relatively low as a whole, which affects the heat preservation and maintenance effect of the concrete, and ultimately affects the strength of the concrete. SUMMARY

[0005] In order to improve the heat preservation and maintenance effect of winter concrete construction and ensure the strength of the formed concrete, the present application provides a portable winter concrete temperature adjustable heat preservation box.

[0006] The portable winter concrete temperature adjustable heat preservation box provided by the present application adopts the following technical scheme:

[0007] A portable winter concrete temperature adjustable heat preservation box, comprising two box bodies, the two box bodies are located on the two sides of the wall body respectively;

[0008] The box body comprises a base, a shell, a heat preservation layer, a heat source and a tension assembly, the shell is installed on the base, the heat preservation layer is arranged on the inner side of the shell, the heat source is arranged on the side of the heat preservation layer away from the shell, the heat source is electrically connected with an external power supply, the shell is provided with an opening, when used in construction, one side of the opening of the shell abuts against the wall body, and a heat preservation bin can be formed between the shell, the base and the wall body;

[0009] The pair of pulling assemblies are used for connecting and fixing the two box bodies, and can make the side of the two box bodies close to each other closely contact with the wall.

[0010] By adopting the above technical scheme, when installed, the two box bodies are placed on the two sides of the wall respectively, and are connected and fixed by the pair of pulling assemblies, so that the side of the two box bodies close to each other closely contacts with the wall, thereby forming a heat preservation bin between the box body and the wall. When the heat source switch is opened, the heat source transmits heat to the heat preservation bin, so that the temperature in the heat preservation bin is relatively high, i.e. in the most suitable temperature range for concrete curing. The heat can directly act on the concrete, and the heat preservation effect is better. Moreover, the structure is simple, a large amount of cost can be saved, and the use of electric heating in the heat preservation bin can save energy compared with the existing method.

[0011] Optionally, the pair of pulling assemblies comprises a screw rod, two limiting plates and two fixing members. The screw rod is arranged on the two box bodies and the wall. The limiting plates are arranged at the two ends of the screw rod and are arranged on the screw rod. The limiting plates are arranged on the side of the shell away from the wall. The two fixing members are arranged on the screw rod and are arranged on the two sides of the wall. When used, the two fixing members abut against the wall.

[0012] By adopting the above technical scheme, when used, the screw rod is inserted into the shell on one side, passes through the wall, and is then inserted out of the shell on the other side, and then the two ends are fastened by nuts, so that the two box bodies can be connected and fixed together. Meanwhile, the two fixing members can clamp the wall, thereby playing a reinforcing role.

[0013] Optionally, the fixing member comprises a sleeve, a supporting leg and an abutting plate. The sleeve is arranged on the screw rod. The supporting leg and the abutting plate are arranged in plurality and are arranged in one-to-one correspondence. One end of the supporting leg is connected to the sleeve, and the abutting plate is connected to the end of the supporting leg away from the sleeve.

[0014] By adopting the above technical scheme, when installed, the abutting plate is arranged in parallel with the wall, and the abutting plate abuts against the wall. Under the action of the supporting leg, the supporting leg plays a supporting role, thereby playing a supporting and reinforcing role.

[0015] Optionally, the sleeve is threadedly connected to the screw rod, and the end of the sleeve away from the wall is provided with a lock nut.

[0016] By adopting the above technical scheme, the distance between the two sleeves can be adjusted by screwing the sleeve. When the thickness of the wall changes, the device can still be applicable, and the lock nut can further play a reinforcing and anti-loosening role.

[0017] Optionally, the base comprises a bottom plate and a plurality of universal wheels, the plurality of universal wheels are arranged on the side of the bottom plate away from the box, and the plurality of universal wheels are distributed in a rectangular shape.

[0018] By adopting the above technical scheme, the heat preservation box is convenient to move, and the convenience and practicability of the heat preservation box are increased.

[0019] Optionally, the bottom plate is provided with a through hole through which heat can pass, the base further comprises a surrounding plate, the surrounding plate is in a U shape, the surrounding plate is connected with the shell through the connecting assembly, and the surrounding plate can move vertically under the action of the plurality of connecting assemblies.

[0020] By adopting the above technical scheme, the surrounding plate, the bottom plate and the wall can form a heat preservation chamber, heat in the heat preservation chamber can enter the heat preservation chamber through the through hole, the surrounding plate can block the outward diffusion of heat, and the heat preservation effect is improved.

[0021] Optionally, the connecting assembly comprises a sliding rail, a sliding block and a tension spring, the sliding rail is installed on the outer side wall of the shell, the sliding block is in sliding connection with the sliding rail, one end of the tension spring is connected with the sliding block, the other end of the tension spring away from the sliding block is connected with the top of the sliding rail, the surrounding plate is provided with a fastener, and the bottom plate is provided with a limiting hole into which the fastener is inserted.

[0022] By adopting the above technical scheme, when heat preservation and maintenance are performed, the surrounding plate is pressed down until it abuts against the ground, and then the fastener is fixed, so that the heat preservation effect is achieved; when the heat preservation and maintenance work is completed, the fixing relationship of the surrounding plate is released, and the surrounding plate is automatically reset under the action of the tension spring, so that the heat preservation box is convenient to move.

[0023] Optionally, the bottom of the surrounding plate is processed with a plurality of spikes, and the plurality of spikes are distributed at intervals along the length direction of the surrounding plate.

[0024] By adopting the above technical scheme, the spikes can be inserted into the ground, so that the surrounding plate is convenient to fix.

[0025] Optionally, the shell is provided with a handle.

[0026] By adopting the above technical scheme, the handle can be convenient for the construction personnel to operate.

[0027] Optionally, the shell is provided with a temperature measuring hole, and the temperature measuring hole is in communication with the heat preservation chamber.

[0028] By adopting the above technical scheme, the temperature in the heat preservation chamber can be detected through the temperature measuring hole, so that the heat source can be controlled, and the temperature in the heat preservation chamber can be ensured to be within the best range.

[0029] To sum up, the present application includes at least one of the following beneficial technical effects:

[0030] 1. Two heat preservation boxes are provided in the present application, which are arranged on the two sides of the wall, wherein the box comprises a shell, a heat preservation layer, a heat source and a pull screw, the heat preservation layer is arranged on the inner side of the shell, the heat source is arranged on the side of the heat preservation layer away from the shell and connected with an external power source, and the two boxes are connected and fixed by the pull screw. When installing, the two boxes are placed on the two sides of the wall and connected and fixed by the pull screw. A heat preservation chamber can be formed between the box and the wall. The heat source transmits heat to the heat preservation chamber. The heat can directly act on the concrete, and the heat preservation effect is better. The structure of the present application is simple, and a large amount of cost can be saved;

[0031] 2. A base is provided in the present application, and a plurality of universal wheels are installed on the base to facilitate the movement of the heat preservation box and increase the convenience and practicality of the heat preservation box. Meanwhile, a sliding groove is installed on the outer side wall of the shell, a sliding block is slidably connected in the sliding groove, a tension spring is arranged between the sliding block and the bottom of the sliding groove, and a coaming is fixed on the sliding block. The coaming can be connected with the base by fasteners. When heat preservation is performed, the coaming is pressed down until it abuts against the ground, and then the fasteners are fixed. In this way, the coaming, the base, the wall and the ground can form a heat preservation chamber. Under the action of the coaming, heat can be less diffused outward and can act more on the concrete. When the heat preservation and curing work is completed, the fixing relationship of the coaming is released, and the coaming is automatically reset under the action of the tension spring, so as to facilitate the movement of the heat preservation box;

[0032] 3. The pull screw in the present application comprises a screw rod and two fixed components. The two fixed components comprise a sleeve, a plurality of legs and a plurality of abutting plates. The sleeve is threadedly connected with the screw rod, the sleeve is fixed on the sleeve at one end of the leg, and the abutting plate is fixed on the end of the leg away from the sleeve. The arrangement direction of the abutting plate is parallel to the wall. When installing, the screw rod is provided through the wall, and the two ends are fixed by nuts. In this way, the heat preservation boxes on the two sides of the wall are connected and fixed. At the same time, the sleeve is screwed, so that the abutting plate directly or indirectly abuts against the wall, which can reinforce the wall and inhibit the possibility of wall deformation. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structure diagram of the portable winter concrete temperature adjustable heat preservation box in the present application after hiding one side box;

[0034] Figure 2 is a top view of the installation structure of the portable winter concrete temperature adjustable heat preservation box in the present application after hiding part of the shell;

[0035] Figure 3is a structural schematic diagram of a pulling assembly in the present application;

[0036] Figure 4 is a structural schematic diagram of a base in the present application;

[0037] Figure 5 is a front view of a portable winter concrete temperature adjustable insulation box in the present application, in which one side of the box is hidden.

[0038] Marked for explanation: 1, wall; 2, box; 21, base; 211, bottom plate; 212, universal wheel; 213, coaming; 22, shell; 221, framework; 2211, main keel; 2212, auxiliary keel; 222, protective layer; 23, insulation layer; 24, heat source; 25, insulation warehouse; 3, pulling assembly; 31, screw rod; 32, limiting plate; 33, fixing piece; 331, sleeve; 332, supporting leg; 333, abutting plate; 34, lock nut; 4, handle; 5, connecting assembly; 51, sliding rail; 52, sliding block; 53, extension spring; 54, fastener; 6, thorn; 7, temperature measuring hole. DETAILED DESCRIPTION

[0039] The following will be combined with the Figures 1-5 The present application is further described in detail.

[0040] The present application discloses a kind of portable winter concrete temperature adjustable insulation box, referring to Figure 1 And Figure 2 Portable winter concrete temperature adjustable insulation box includes two box 2, two box 2 is located at the two sides of wall 1 respectively, the structure of two box 2 is same, box 2 includes base 21, shell 22, insulation layer 23 and heat source 24, shell 22 is installed on base 21, insulation layer 23 is arranged in the inside of shell 22, heat source 24 is arranged on the side of insulation layer 23 away from shell 22, heat source 24 is electrically connected with external power supply, shell 22 is provided with opening, when construction is used, the side of the opening of shell 22 is in abutment with wall 1, insulation warehouse 25 can be formed between shell 22, base 21 and wall 1.

[0041] When installing, two box 2 is placed at the two sides of wall 1 respectively, the side of two box 2 close to each other is closely combined with wall 1, so that insulation warehouse 25 can be formed between box 2 and wall 1, heat source 24 is connected with external power supply, heat source 24 transmits heat to insulation warehouse 25, so that the temperature in insulation warehouse 25 is relatively high, i.e. in the temperature range most suitable for concrete curing, these heat can directly act on concrete, and the insulation effect is better, and the structure in the present application is simple, can save a lot of cost.

[0042] Specifically, referring to Figure 1 AndFigure 2 The shell 22 comprises a framework 221 and a protective layer 222, the framework 221 is located between the protective layer 222 and the thermal insulation layer 23, wherein the framework 221 comprises a transverse main keel 2211 and a vertical auxiliary keel 2212, and the main keel 2211 and the auxiliary keel 2212 are arranged vertically. In this way, under the action of the protective layer 222 and the framework 221, the box body 2 as a whole has high strength and higher safety.

[0043] It should be noted that the protective layer 222 is preferably a metal material, and an aluminum plate is preferably used; the main keel 2211 and the auxiliary keel 2212 can be made of metal materials or other materials such as wood, and are not limited in the embodiment. The thermal insulation layer 23 is preferably a thermal insulation board, and the type of the thermal insulation board is not limited; the heat source 24 is preferably an electric heat tracing, and the electric heat tracing is composed of a conductive polymer and two parallel metal wires and an insulation layer. The conductive polymer has a very high positive temperature coefficient characteristic, and is connected in parallel with each other, can automatically adjust the output power with the temperature change of the heated system, and automatically limit the temperature of heating. Of course, the heat source 24 can also select other products that meet the requirements.

[0044] Referring to Figure 2 and Figure 3 , in order to improve the tightness between the box body 2 and the wall body 1, the application also provides a pull assembly 3. The pull assembly 3 can connect and fix two box bodies 2, and the pull assembly 3 can make the side of the two box bodies 2 close to each other tightly fit with the wall body 1, so as to improve the sealing between the shell 22 and the wall body 1, and further improve the thermal insulation effect.

[0045] Specifically, referring to Figure 2 and Figure 3 , the pull assembly 3 comprises a screw rod 31, two limiting plates 32 and two fixing members 33, the screw rod 31 is arranged on the two box bodies 2 and the wall body 1, the limiting plates 32 are respectively located at both ends of the screw rod 31, the limiting plates 32 are arranged on the screw rod 31, the limiting plates 32 are located on the side of the shell 22 away from the wall body 1, and the two fixing members 33 are arranged on the screw rod 31 and are respectively located on both sides of the wall body 1.

[0046] When used in construction, the two fixing members 33 can abut against the wall body 1. During installation, the screw rod 31 is first inserted from one side of the shell 22, passes through the wall body 1, and is then inserted out of the other side of the shell 22, and then the limiting plate 32 is inserted, and the limiting plate 32 is fastened to the shell 22 by a nut, so as to improve the fastening strength. At the same time, the two fixing members 33 can also reinforce the wall body 1 and inhibit the possibility of deformation of the wall body 1.

[0047] Referring to Figure 2 and Figure 3The fixing member 33 comprises a sleeve 331, a supporting leg 332 and an abutting plate 333. The sleeve 331 is arranged on the screw rod 31. The supporting leg 332 and the abutting plate 333 are arranged in plurality and one-to-one correspondence. One end of the supporting leg 332 is connected to the sleeve 331, and the abutting plate 333 is connected to the end of the sleeve 331 away from the supporting leg 332. During installation, the abutting plate 333 can abut against the wall body 1, so that the fixing member 33 can play a supporting and fixing role. At the same time, the abutting plate 333 is directly or indirectly pressed on the wall body 1, which can effectively inhibit the possibility of deformation of the wall body 1 during maintenance. In the embodiment, the number of the fixing member 33 can be adjusted. In the embodiment, three fixing members 33 are taken as an example for illustration. The three fixing members 33 can form a stable triangular structure, and the supporting strength is better.

[0048] It should be particularly pointed out that the sleeve 331 is threadedly connected with the screw rod 31. In this way, by screwing the sleeve 331, the distance between the two sleeves 331 can be adjusted. In this way, when the thickness of the wall body 1 changes, the device can still be applicable, thereby improving the practicability. Of course, in order to achieve the purpose of preventing loosening, the end of the sleeve 331 away from the wall body 1 is provided with a lock nut 34. During installation, the sleeve 331 is first screwed until the abutting plate 333 is tightly attached to the wall body 1, and then the lock nut 34 is screwed to press the sleeve 331, thereby achieving the purpose of preventing loosening. The type of the lock nut 34 is not specifically limited in the embodiment.

[0049] It should be pointed out that in order to facilitate the adjustment of the sleeve 331 and the lock nut 34, the top of the shell 22 can be detachable. The detachable manner can adopt plug-in connection, bolt connection, buckle connection, etc. In the embodiment, no specific limitation is made.

[0050] Referring to Figure 2 and Figure 4 Further, the base 21 comprises a bottom plate 211 and a plurality of universal wheels 212. The shell 22 is arranged on the bottom plate 211. The shell 22, the bottom plate 211 and the wall body 1 jointly constitute the heat preservation bin 25. The plurality of universal wheels 212 are arranged on the side of the bottom plate 211 away from the box body 2, and the plurality of universal wheels 212 are distributed in a rectangular shape. The universal wheels 212 facilitate the movement of the heat preservation bin, and can increase the convenience and practicability of the heat preservation bin. Of course, in order to facilitate the movement of the box body 2, a handle 4 is arranged on the outer wall of the shell 22. The construction personnel can pull or push the handle 4 to drive the whole box body 2 to move, thereby improving the convenience of operation.

[0051] Referring to Figure 4 and Figure 5Due to the presence of the universal wheel 212, the bottom plate 211 has a certain spacing from the ground, and the wall body 1 corresponding to the spacing is directly exposed to the air, so that the strength of the concrete of this part cannot be guaranteed. Therefore, the application also provides a plurality of connecting assemblies 5, the bottom plate 211 is provided with a through hole through which heat can pass, and the base 21 further comprises a coaming 213, the coaming 213 is in a U shape, the coaming 213 is connected with the shell 22 through the connecting assembly 5, and the coaming 213, the bottom plate 211, the ground and the wall body 1 can form a heat preservation chamber, heat in the heat preservation bin 25 can enter the heat preservation chamber through the through hole, and the coaming 213 can block the outward diffusion of heat, so that the heat preservation and maintenance effect can be improved.

[0052] With reference to Figure 2 and Figure 5 , the coaming 213 can move vertically under the action of the plurality of connecting assemblies 5. Specifically, the connecting assembly 5 comprises a sliding rail 51, a sliding block 52 and a tension spring 53, the sliding rail 51 is installed on the outer side wall of the shell 22, the sliding block 52 is in sliding connection with the sliding rail 51, one end of the compression spring is connected to the sliding block 52, and the other end of the compression spring away from the sliding block 52 is connected to the top of the sliding rail 51, the coaming 213 is provided with a fastener 54, and the bottom plate 211 is provided with a limiting hole (not shown in the figure) for inserting the fastener 54. When heat preservation and maintenance is performed, the coaming 213 is pressed downward, so that the coaming 213 is lowered until it abuts against the ground, and then the fastener 54 is fixed, so that the heat preservation effect is achieved; when the heat preservation and maintenance work is completed, the fixing relationship of the coaming 213 is released, and under the action of the tension spring 53, the coaming 213 is automatically reset, so that there is a spacing between the bottom of the coaming 213 and the ground, so as to facilitate the movement of the heat preservation box.

[0053] The bottom of the coaming 213 is further provided with a plurality of spikes 6, and the plurality of spikes 6 are distributed at intervals along the length direction of the coaming 213. The spikes 6 can be inserted into the ground, so as to facilitate the fixation of the coaming 213 and improve the stability.

[0054] With reference to Figure 1 and Figure 2 , the shell 22 is provided with a temperature measuring hole 7, the temperature measuring hole 7 is in communication with the heat preservation bin 25, and the temperature in the heat preservation bin 25 can be detected in real time by the construction personnel, so as to control the heat source 24 and ensure that the temperature in the heat preservation bin 25 is within the best range.

[0055] Of course, a temperature sensor can also be installed in the heat preservation bin 25, and the temperature sensor is electrically connected with a controller, the controller can adopt a PLC controller, and the heat source 24 is also electrically connected with the controller, and a low threshold and a high threshold are set in the controller, and the working state of the heat source 24 is controlled by comparing the real-time temperature with the two thresholds, that is, when the temperature is lower than the low threshold, the controller controls the heat source 24 to work; when the temperature is higher than the high threshold, the controller controls the heat source 24 to stop working. In this way, automatic control can be realized, and higher convenience is achieved.

[0056] The box body 2 on both sides of the wall body 1 is the same structure, in the embodiment, only the box body 2 on one side is described, and the box body 2 on the other side is symmetrically arranged with respect to the wall body 1, and specific description is not made. Of course, the size of the box body 2 needs to be adjusted according to the size of the wall body 1.

[0057] The implementation principle of the portable winter concrete temperature adjustable heat preservation box in the embodiment is as follows: during heat preservation and maintenance, the two box bodies 2 are respectively arranged on both sides of the wall body 1, the screw rod 31 is first inserted from the shell 22 on one side, passes through the wall body 1, and then is inserted from the shell 22 on the other side, and then is inserted into the limiting plate 32, and the limiting plate 32 is fastened on the corresponding shell 22 through the nut; the sleeve 331 is screwed until the abutting plate 333 directly or indirectly presses on the wall body 1, and the lock nut 34 is pressed tightly; the surrounding plate 213 is pressed down until the bottom of the surrounding plate 213 is tightly attached to the ground, and the surrounding plate 213 is fixed by the fastener 54; the heat source 24 is connected with the external power supply, the heat source 24 transmits heat to the heat preservation bin 25, so that the temperature in the heat preservation bin 25 is relatively high, and at the same time, heat can be transmitted to the heat preservation chamber through the through hole in the base 21, and the heat can directly act on the concrete, the heat preservation effect is better, the maintenance effect of the concrete is better, and the structure in the application is simple, easy to turnover, and can be repeatedly used, so that a large amount of cost can be saved.

[0058] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: any equivalent changes made on the basis of the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A portable, temperature-adjustable insulation box for winter concrete construction, characterized in that: It includes two boxes (2), which are located on both sides of the wall (1); The box (2) includes a base (21), a shell (22), an insulation layer (23), a heat source (24), and a pull-out assembly (3). The shell (22) is installed on the base (21). The insulation layer (23) is located inside the shell (22). The heat source (24) is located on the side of the insulation layer (23) away from the shell (22). The heat source (24) is electrically connected to an external power source. The shell (22) has an opening. When in use, one side of the opening of the shell (22) abuts against the wall (1). An insulation chamber (25) can be formed between the shell (22), the base (21), and the wall (1). The pull assembly (3) is used to connect and fix the two boxes (2). The pull assembly (3) enables the two boxes (2) to be in close contact with each other on the side that is close to each other to be tightly fitted to the wall (1). The base (21) includes a base plate (211) and a plurality of casters (212). The plurality of casters (212) are all located on the side of the base plate (211) away from the box (2), and the plurality of casters (212) are arranged in a rectangular pattern. It also includes multiple connecting components (5), the base plate (211) has through holes for heat to pass through, the base (21) also includes a surrounding plate (213), the surrounding plate (213) is U-shaped, the surrounding plate (213) is connected to the housing (22) through the connecting components (5), and the surrounding plate (213) can move vertically under the action of the multiple connecting components (5).

2. The portable adjustable temperature insulation box for winter concrete construction according to claim 1, characterized in that: The pull assembly (3) includes a screw (31), two limiting plates (32) and two fasteners (33). The screw (31) passes through the two housings (2) and the wall (1). The limiting plates (32) are located at both ends of the screw (31) and pass through the screw (31). The limiting plates (32) are located on the side of the housing (22) away from the wall (1). The two fasteners (33) are both set on the screw (31) and are located on both sides of the wall (1). When in use, the two fasteners (33) abut against the wall (1).

3. The portable adjustable temperature insulation box for winter concrete construction according to claim 2, characterized in that: The fixing component (33) includes a sleeve (331), a support leg (332), and abutment plate (333). The sleeve (331) is mounted on the screw (31). Multiple support legs (332) and abutment plates (333) are provided, and the support legs (332) and abutment plates (333) are arranged in a one-to-one correspondence. One end of the support leg (332) is connected to the sleeve (331), and the abutment plate (333) is connected to the end of the support leg (332) away from the sleeve (331).

4. The portable adjustable temperature insulation box for winter concrete construction according to claim 3, characterized in that: The sleeve (331) is threadedly connected to the screw (31), and an anti-loosening nut (34) is provided at the end of the sleeve (331) away from the wall (1).

5. The portable adjustable temperature insulation box for winter concrete construction according to claim 1, characterized in that: The connecting assembly (5) includes a slide rail (51), a slider (52), and a tension spring (53). The slide rail (51) is mounted on the outer side wall of the housing (22). The slider (52) is slidably connected to the slide rail (51). One end of the tension spring (53) is connected to the slider (52), and the other end of the tension spring (53) away from the slider (52) is connected to the top of the slide rail (51). Fasteners (54) are threaded through the enclosure plate (213), and a limiting hole for the fasteners (54) to be inserted is provided on the bottom plate (211).

6. The portable adjustable temperature insulation box for winter concrete construction according to claim 5, characterized in that: The bottom of the enclosure (213) is processed with a plurality of spikes (6), which are spaced apart along the length of the enclosure (213).

7. The portable adjustable temperature insulation box for winter concrete construction according to claim 1, characterized in that: A handle (4) is provided on the housing (22).

8. The portable adjustable temperature insulation box for winter concrete construction according to claim 1, characterized in that: A temperature measuring hole (7) is provided on the shell (22), and the temperature measuring hole (7) is connected to the heat preservation chamber (25).

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