A winter thermal insulation and curing device for construction beams and slabs

Abstract

This invention belongs to the field of building material maintenance technology, specifically a winter thermal insulation and maintenance device for construction beams and slabs. The proposed solution includes a main sheath and two side sheaths, with the two side sheaths slidably connected to the interior of both ends of the main sheath. The main sheath and the two side sheaths together constitute the thermal insulation sheath. This invention achieves heating and thermal insulation of construction beams and slabs. Through a spring-pressure switch linkage design, combined with a temperature sensor and controller, heating is initiated when the internal temperature of the thermal insulation sheath is lower than a preset value and stops when the preset value is reached. This enables automated control of heating and curing. Furthermore, the pressure switch detects the closure status of the cover plates. If the pressure switch is not triggered simultaneously, and the two cover plates are not fully closed, the controller will cut off the power to the electric heater and issue a warning, preventing low heating efficiency or localized overheating caused by an unsealed thermal insulation sheath. This significantly improves the safety, reliability, and automation level of thermal insulation and curing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building material maintenance, and particularly relates to a construction beam slab winter heat preservation maintenance device. BACKGROUND

[0002] In the field of bridge and building construction, low-temperature environment in winter poses a serious challenge to the quality of concrete beam slabs. Traditional maintenance methods mostly rely on covering heat preservation materials or building simple heat preservation sheds, but there are problems such as fast heat loss, inaccurate temperature control, etc., which easily lead to cracks in beam slabs due to temperature difference stress, seriously affecting the structural durability.

[0003] Through retrieval, a Chinese patent application with the application publication number CN216949602U discloses a construction beam slab winter heat preservation maintenance device, which comprises a plurality of heat preservation maintenance components. The construction beam slab winter heat preservation maintenance device can perform heat preservation maintenance on outdoor construction beam slabs under low-temperature conditions.

[0004] The structure design of the above-mentioned patent still has limitations. The heat preservation components need to be combined and spliced to form a closed space, which is complicated to operate and the sealing property depends on manual adjustment. At the same time, the device does not have temperature sensing and active heat preservation functions, and it is difficult to adapt to the precise maintenance needs in complex environments. There is an urgent need to design a new type of construction beam slab winter heat preservation maintenance device to solve the above problems. SUMMARY

[0005] Based on the technical problem that the existing beam slab winter maintenance device lacks an automatic temperature control system and needs to be manually adjusted frequently to adjust the heating equipment, the present application provides a construction beam slab winter heat preservation maintenance device.

[0006] The construction beam slab winter heat preservation maintenance device provided by the application comprises a main sheath and two side sheaths, the two side sheaths are slidably connected to the inside of the two ends of the main sheath, the main sheath and the two side sheaths jointly form a heat preservation sheath, the inside of the heat preservation sheath is fixedly connected with uniformly distributed electric heaters, one end of the side sheath outside the main sheath is hung with a cover plate, the outer walls of the two sides of the side sheath are fixedly connected with hooks, one of the cover plates is provided with hooks on the two sides, the two hooks are respectively inserted into the inside of two adjacent hooks, the other cover plate is fixedly connected with a hanging plate on the two sides, the middle position of the bottom of the hanging plate is fixedly connected with a pressure switch, the edge of the bottom of the hanging plate is fixedly connected with a guide rod, the rod body of the guide rod is slidably connected with a guide ear, the outer wall of the guide ear is fixedly connected with a lower clamping piece, the top of the lower clamping piece is fixedly connected with a spring, the top of the spring is fixedly connected with an upper clamping piece, the top of the upper clamping piece is in contact with the force sensitive element of the pressure switch, the bottom of the lower clamping piece is fixedly connected with a lifting column, the bottom of the lifting column is fixedly connected with a clamping block, the clamping block is clamped into the inside of the adjacent hook, the cover plate connected with the hanging plate is fixedly connected with a temperature sensor on the side close to the main sheath, the temperature sensor is connected with a controller through a signal line, the controller is fixedly connected to the side of the cover plate away from the main sheath, and the inside of the controller is provided with a warning mechanism.

[0007] Preferably, the bottom of the guide rod is threadedly connected with a limiting nut, and a gasket is arranged above the limiting nut.

[0008] Preferably, the outer walls of the two sides of the main sheath are fixedly connected with second handles, and the top of the cover plate is fixedly connected with a third handle.

[0009] Preferably, the bottom of the outer wall of the two sides of the main sheath is fixedly connected with a guide rail, the bottom of the outer wall of the two sides of the side sheath is fixedly connected with a sliding sleeve, and the two sliding sleeves on the same side sheath are slidably connected with the two guide rails.

[0010] Preferably, the bottom of the outer wall of the two sides of the main sheath is fixedly connected with a guide rail, the bottom of the outer wall of the two sides of the side sheath is fixedly connected with a sliding sleeve, and the two sliding sleeves on the same side sheath are slidably connected with the two guide rails.

[0011] Preferably, the top of the controller is provided with a display screen, and the display screen is provided with uniformly distributed buttons below.

[0012] Preferably, the top of the controller is provided with a display screen, and the display screen is provided with uniformly distributed buttons below.

[0013] Preferably, the two ends of the top of the main sheath are fixedly connected with supports, the top of the side away from the two supports is fixedly connected with a pin barrel, the inside of the two pin barrels is slidably connected with a pin, the top of the two pins is fixedly connected with a limiting sheet, the diameter of the limiting sheet is larger than the inner diameter of the pin barrel, the side away from the two pins is provided with a guide inclined surface, and the middle of the convex edge of the two buckles is provided with a positioning hole matched with the pin.

[0014] Preferably, the two sides of the top of the main sheath are fixedly connected with shaft seats, and the same frame is rotatably connected between the two shaft seats.

[0015] Preferably, the top of the side away from the shaft seat of the frame is fixedly connected with a first handle, the top of the side close to the first handle of the main sheath is fixedly connected with a support table, the support table is located below the photovoltaic power generation mechanism, the two sides of the end close to the support table of the frame are rotatably connected with rotating rods, the end away from the frame of the two rotating rods is rotatably connected with the same roller, the side close to the shaft seat of the support table is provided with a slope, and the other side of the support table is provided with a clamping groove matched with the roller.

[0016] Compared with the prior art, the construction beam slab winter heat preservation and maintenance device has the following beneficial effects:

[0017] 1. The construction beam slab winter heat preservation and maintenance device, by setting the electric heater, the spring, the pressure switch and the cover plate, through the telescopic heat preservation sheath structure formed by the main sheath and the side sheath, in combination with the uniformly distributed electric heaters inside, the accurate and uniform heating and heat preservation of the construction beam slab are realized, through the linkage design of the spring and the pressure switch, in cooperation with the temperature sensor and the controller, when the temperature inside the heat preservation sheath is lower than the preset value, heating is started, and when the preset value is reached, heating is stopped, the automatic control of heating and maintenance can be realized, the pressure switch can also detect the closing state of the cover plate, if the pressure switch is not triggered at the same time, the two cover plates are not completely closed, the controller will cut off the power supply of the electric heater and issue a warning, the problems of low heating efficiency or local overheating caused by the unsealed heat preservation sheath are avoided, and the safety, reliability and automation level of heat preservation and maintenance are significantly improved.

[0018] 2. The construction beam slab winter heat preservation maintenance device, through the setting up photovoltaic power generation mechanism, roller, rotating rod and support table, the photovoltavoltaic power generation mechanism can convert solar energy into electric energy, power supply for the device electric parts, the first handle is convenient for the operator to rotate the frame, it is convenient for adjusting the angle of photovoltaic power generation mechanism, ensure that it is always in the best light angle, optimize the solar energy conversion efficiency, the support table provides support for the photovoltaic power generation mechanism, in the process of turning up, the rotating rod tends to be vertical state, the roller rolls along the slope, until the roller passes through the support table and falls to the top of the main sheath, at this time, the operator releases the first handle, the photovoltaic power generation mechanism is fixed by the gravity of the photovoltaic power generation mechanism, the roller is clamped into the clamping groove, and the photovoltaic power generation mechanism is fixed after turning over.

[0019] 3. The construction beam slab winter heat preservation maintenance device, through the setting up photovoltaic power generation mechanism, roller, rotating rod and support table, the photovoltavoltaic power generation mechanism can convert solar energy into electric energy, power supply for the device electric parts, the first handle is convenient for the operator to rotate the frame, it is convenient for adjusting the angle of photovoltaic power generation mechanism, ensure that it is always in the best light angle, optimize the solar energy conversion efficiency, the support table provides support for the photovoltaic power generation mechanism, in the process of turning up, the rotating rod tends to be vertical state, the roller rolls along the slope, until the roller passes through the support table and falls to the top of the main sheath, at this time, the operator releases the first handle, the photovoltaic power generation mechanism is fixed by the gravity of the photovoltaic power generation mechanism, the roller is clamped into the clamping groove, and the photovoltaic power generation mechanism is fixed after turning over. DRAWINGS

[0020] Figure 1 The structure diagram of the construction beam slab winter heat preservation maintenance device is provided.

[0021] Figure 2 The left view of the construction beam slab winter heat preservation maintenance device is provided.

[0022] Figure 3 The structure diagram of the construction beam slab winter heat preservation maintenance device in the photovoltaic power generation mechanism turning state is provided.

[0023] Figure 4 The internal structure diagram of the main sheath and the edge sheath of the construction beam slab winter heat preservation maintenance device is provided.

[0024] Figure 5 The slide sleeve and guide rail structure diagram of the construction beam slab winter heat preservation maintenance device is provided.

[0025] Figure 6 The buckle and pin structure diagram of the construction beam slab winter heat preservation maintenance device is provided.

[0026] Figure 7 The pressure switch, spring and lifting column structure diagram of the construction beam slab winter heat preservation maintenance device is provided.

[0027] Figure 8 A support table structure diagram of a construction beam slab winter heat preservation and maintenance device.

[0028] In the figure: 1, main sheath; 2, base; 3, side sheath; 4, sliding sleeve; 5, cover plate; 6, shaft seat; 7, side frame; 8, photovoltaic power generation mechanism; 9, first handle; 10, second handle; 11, threaded sleeve; 12, push rod; 13, buckle; 14, support column; 15, crank handle; 16, hook; 17, transparent window; 18, third handle; 19, controller; 20, button; 21, display screen; 22, hanging lug; 23, support table; 24, rotating rod; 25, roller; 26, support; 27, pin cylinder; 28, clamping pin; 29, limiting sheet; 30, electric heater; 31, guide rail; 32, roller; 33, temperature sensor; 34, guide slope; 35, positioning hole; 36, hanging plate; 37, pressure switch; 38, upper clamping piece; 39, spring; 40, lower clamping piece; 41, guide rod; 42, guide lug; 43, limiting nut; 44, gasket; 45, lifting column; 46, clamping block; 47, clamping groove; 48, slope. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments of the present application.

[0030] REFERENCE Figures 1-8The utility model provides a kind of construction beam slab winter heat preservation maintenance device, including main sheath 1 and two edge sheaths 3, two edge sheaths 3 are respectively slidably connected in the inside of the both ends of main sheath 1, and main sheath 1 and two edge sheaths 3 jointly constitute heat preservation sheath, the inside of heat preservation slide cover is fixedly connected with the electric heater 30 of even distribution, the one end of edge sheath 3 at the outside of main sheath 1 is hung with cover plate 5, the outer wall of both sides of edge sheath 3 is fixedly connected with hook 16, one of cover plate 5 both sides is provided with lug 22, two lug 22 are respectively inserted in the inside of two adjacent hooks 16, the both sides of another cover plate 5 are fixedly connected with hanging plate 36, the middle position of the bottom of hanging plate 36 is fixedly connected with pressure switch 37, the edge of the bottom of hanging plate 36 is fixedly connected with guide rod 41, the rod body of guide rod 41 is slidably connected with guide lug 42, the outer wall of guide lug 42 is fixedly connected with lower clamping piece 40, the top of lower clamping piece 40 is fixedly connected with spring 39, the top of spring 39 is fixedly connected with upper clamping piece 38, the top of upper clamping piece 38 contacts the force sensing element of pressure switch 37, the bottom of lower clamping piece 40 is fixedly connected with lifting column 45, the bottom of lifting column 45 is fixedly connected with clamping block 46, clamping block 46 is clamped in the inside of adjacent hook 16 of itself, temperature sensor 33 is fixedly connected with the cover plate 5 of being connected with hanging plate 36 near one side of main sheath 1, temperature sensor 33 is connected with controller 19 by signal line, controller 19 is fixedly connected on the side of cover plate 5 away from main sheath 1 of itself adjacent, and warning mechanism is arranged in the inside of controller 19.

[0031] When using, main sheath 1 and two edge sheaths 3 constitute heat preservation sheath, the cover plate 5 of one end of edge sheath 3 is hung with hook 16 by lug 22, and the cover plate 5 of the other end is hung with hook 16 by hanging plate 36, spring 39, lifting column 45 and clamping block 46, the temperature range suitable for beam slab preservation is preset by controller 1, when temperature sensor 33 detects that the temperature inside heat preservation sheath is lower than preset value, controller 19 controls electric heater 30 to be powered to heat, to improve the temperature inside heat preservation sheath to be above preset value, to provide heat for construction beam slab, after cover plate 5 hung with hook 16 is equipped with controller 19, cover plate 5 is compressed spring 39 by gravity, the elastic force of spring 39 is extruded to upper clamping piece 38, to trigger pressure switch 37, when spring 39 is stretched and contracted, guide rod 41 is slid along the inner wall of guide lug 42, to limit the stretching and contracting direction of spring 39, to avoid pressure switch 37 to deviate, when two pressure switches 37 are not triggered simultaneously, it indicates that at least one side of cover plate 5 is not closed to accurate position, to cause heat preservation sheath not to be completely closed, and the heating effect of electric heater 30 is poor, at this time, controller 19 controls warning mechanism to issue sound and light signals to remind staff, and electric heater 30 is disconnected from power supply, when cover plate 5 is adjusted, two pressure switches 37 are triggered simultaneously, at this time, heat preservation sheath is completely closed, and warning mechanism stops warning, and electric heater 30 is powered to heat again.

[0032] In the application, the bottom of the guide rod 41 is threadedly connected with a limiting nut 43, a gasket 44 is arranged above the limiting nut 43, the limiting nut 43 and the gasket 44 are located at one end of the guide rod 41, the reset stroke of the spring 39 is limited, the limiting nut 43 is unscrewed from the end of the guide rod 41, the guide lug 42 is pulled out of the rod body of the guide rod 41, and the spring 39, the lifting column 45 and the clamping block 46 are removed from below the pressure switch 37, so that the installation and maintenance of equipment parts are facilitated, and the stability of the pressure value required for triggering the pressure switch 37 is ensured.

[0033] In the application, the outer walls on both sides of the main sheath 1 are fixedly connected with second handles 10, and the top of the cover plate 5 is fixedly connected with a third handle 18, so that the second handles 10 on the outer walls on both sides of the main sheath 1 facilitate the carrying and moving of the main sheath 1, and the third handle 18 on the top of the cover plate 5 facilitates the moving and adjusting of the cover plate 5.

[0034] In the application, the bottoms of the inner walls on both sides of the main sheath 1 are fixedly connected with guide rails 31, and the bottoms of the outer walls on both sides of the side sheath 3 are fixedly connected with sliding sleeves 4, the two sliding sleeves 4 on the same side sheath 3 are slidingly connected to the two guide rails 31 respectively, and the guide rail 31 in the main sheath 1 cooperates with the sliding sleeve 4 outside the side sheath 3, so that the side sheath 3 can stably slide in the main sheath 1, the telescopic function of the side sheath 3 is realized, and different lengths of beam plates can be adapted to.

[0035] In the application, the bottoms of the inner walls on both sides of the main sheath 1 are fixedly connected with guide rails 31, and the bottoms of the outer walls on both sides of the side sheath 3 are fixedly connected with sliding sleeves 4, the two sliding sleeves 4 on the same side sheath 3 are slidingly connected to the two guide rails 31 respectively, and the guide rail 31 in the main sheath 1 cooperates with the sliding sleeve 4 outside the side sheath 3, so that the side sheath 3 can stably slide in the main sheath 1, the telescopic function of the side sheath 3 is realized, and different lengths of beam plates can be adapted to.

[0036] In the application, the top of the controller 19 is provided with a display screen 21, and the display screen 21 is provided with uniformly distributed buttons 20 below, the display screen 21 can be used for displaying temperature values, and the buttons 20 are used for operating the controller 19.

[0037] In the application, the top of the controller 19 is provided with a display screen 21, and the display screen 21 is provided with uniformly distributed buttons 20 below, the display screen 21 can be used for displaying temperature values, and the buttons 20 are used for operating the controller 19.

[0037] In the application, the top of the controller 19 is provided with a display screen 21, and the display screen 21 is provided with uniformly distributed buttons 20 below, the display screen 21 can be used for displaying temperature values, and the buttons 20 are used for operating the controller 19.

[0037] In the application, the top of the controller 19 is provided with a display screen 21, and the display screen 21 is provided with uniformly distributed buttons 20 below, the display screen 21 can be used for displaying temperature values, and the buttons 20 are used for operating the controller 19.

[0038] In the application, the two ends of the top of the main sheath 1 are fixedly connected with supports 26, the top of the side away from the two supports 26 is fixedly connected with pin barrels 27, the inside of the two pin barrels 27 is slidably connected with clamping pins 28, the top of the two clamping pins 28 is fixedly connected with limiting sheets 29, the diameter of the limiting sheet 29 is larger than the inner diameter of the pin barrel 27, the side away from the two clamping pins 28 is provided with a guide inclined surface 34, the middle of the convex edge of the two buckles 13 is provided with a positioning hole 35 matched with the clamping pin 28, in the process of storing the side sheath 3 into the main sheath 1, the convex edge of the buckle 13 extrudes the inclined surface of the clamping pin 28, so that the clamping pin 28 rises upwards until the clamping pin 28 reaches above the positioning hole 35 and falls into the positioning hole 35, thereby realizing the automatic fixing of the side sheath 3, facilitating the storage and stacking of the whole device, improving the portability and storage safety of the device, and the guide inclined surface reduces the cross section of the bottom end of the clamping pin 28, facilitating the insertion into the positioning hole 35, and the limiting sheet 29 prevents the clamping pin 28 from falling off.

[0039] In the application, the two sides of the top of the main sheath 1 are fixedly connected with shaft seats 6, the same side frame 7 is rotatably connected between the two shaft seats 6, the inside of the side frame 7 is fixedly connected with a photovoltaic power generation mechanism 8, and the photovoltaic power generation mechanism 8 inside the side frame 7 can convert solar energy into electric energy to supply power to the electric components of the device.

[0040] In the application, the top of the side away from the shaft seat 6 of the side frame 7 is fixedly connected with a first handle 9, the top of the side close to the first handle 9 of the main sheath 1 is fixedly connected with a support table 23, the support table 23 is located below the photovoltaic power generation mechanism 8, the two sides of the end of the side frame 7 close to the support table 23 are rotatably connected with rotating rods 24, the end away from the side frame 7 of the two rotating rods 24 is rotatably connected with the same roller 25, the side close to the shaft seat 6 of the support table 23 is provided with a slope surface 48, the other side of the support table 23 is provided with a clamping groove 47 matched with the roller 25, and the first handle 9 at the top of the side frame 7 facilitates the rotation of the side frame 7 by the operator, facilitates the adjustment of the angle of the photovoltaic power generation mechanism 8, ensures that it is always at the best light collecting angle, optimizes the solar energy conversion efficiency, the support table 23 provides support for the photovoltaic power generation mechanism 8, in the process of upward overturning of the photovoltaic power generation mechanism 8, the rotating rod 24 tends to be perpendicular to the state of rotation, the roller 25 rolls along the slope surface 48, until the roller 25 passes over the support table 23 and falls to the top of the main sheath 1 again, at this time, the operator releases the first handle 9, the photovoltaic power generation mechanism 8 presses the rotating rod 24 through its own gravity, so that the roller 25 is clamped into the clamping groove 47, the roller 25 is fixed, and then the overturned photovoltaic power generation mechanism 8 is fixed.

[0041] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A construction beam slab winter heat preservation maintenance device, comprising a main sheath (1) and two edge sheaths (3), the two edge sheaths (3) are respectively slidably connected to the interiors of the two ends of the main sheath (1), characterized in that, The main sheath (1) and the two side sheaths (3) jointly constitute a heat preservation sheath, the inside of the heat preservation sheath is fixedly connected with uniformly distributed electric heaters (30), one end of the side sheath (3) outside the main sheath (1) is hung with a cover plate (5), the outer walls of the two sides of the side sheath (3) are fixedly connected with hooks (16), both sides of one of the cover plates (5) are provided with hanging ears (22), the two hanging ears (22) are respectively inserted into the interiors of two adjacent hooks (16), both sides of the other cover plate (5) are fixedly connected with hanging plates (36), the middle position of the bottom of the hanging plate (36) is fixedly connected with a pressure switch (37), the edge of the bottom of the hanging plate (36) is fixedly connected with a guide rod (41), the rod body of the guide rod (41) is slidingly connected with a guide ear (42), the outer wall of the guide ear (42) is fixedly connected with a lower clamping piece (40), the top of the lower clamping piece (40) is fixedly connected with a spring (39), the top of the spring (39) is fixedly connected with an upper clamping piece (38), the top of the upper clamping piece (38) contacts a force sensitive element of the pressure switch (37), the bottom of the lower clamping piece (40) is fixedly connected with a lifting column (45), the bottom of the lifting column (45) is fixedly connected with a clamping block (46), the clamping block (46) is clamped into the interior of the hook (16) adjacent to itself, the cover plate (5) connected with the hanging plate (36) is fixedly connected with a temperature sensor (33) on the side close to the main sheath (1), the temperature sensor (33) is connected with a controller (19) through a signal line, the controller (19) is fixedly connected to the side of the cover plate (5) adjacent to itself and away from the main sheath (1), and the inside of the controller (19) is provided with a warning mechanism; The top of the side away from each other of the two side sheaths (3) is fixedly connected with a buckle (13), one side of the two buckles (13) close to each other is provided with a convex rib, the bottom of the convex rib is at the same horizontal height as the top outer wall of the main sheath (1), the top of the two buckles (13) is fixedly connected with a support column (14), the two sides of the top outer wall of the main sheath (1) are fixedly connected with threaded sleeves (11), the interiors of the two threaded sleeves (11) are threadedly connected with push rods (12), one end of the push rod (12) is rotatably connected to the support column (14) adjacent to itself, and the other end of the push rod (12) is drivingly connected with a crank handle (15); The two ends of the top of the main sheath (1) are fixedly connected with brackets (26), the top of the side away from each other of the two brackets (26) is fixedly connected with a pin barrel (27), the interiors of the two pin barrels (27) are slidingly connected with clamping pins (28), the top of the two clamping pins (28) is fixedly connected with limit pieces (29), the diameter of the limit piece (29) is greater than the inner diameter of the pin barrel (27), and the side away from each other of the two clamping pins (28) is provided with a guide inclined surface (34), and the middle part of the convex rib of the two buckles (13) is provided with a positioning hole (35) matched with the clamping pin (28).

2. The construction beam slab winter heat preservation maintenance device according to claim 1, characterized in that, The bottom of the guide rod (41) is threadedly connected with a limit nut (43), and a gasket (44) is arranged above the limit nut (43).

3. The construction beam slab winter heat preservation maintenance device according to claim 1, characterized in that, The outer wall of the main sheath (1) is fixedly connected with a second handle (10), and the top of the cover plate (5) is fixedly connected with a third handle (18).

4. The construction beam slab winter heat preservation maintenance device according to claim 1, characterized in that, The bottom of the inner wall of the main sheath (1) is fixedly connected with a guide rail (31), and the bottom of the outer wall of the side sheath (3) is fixedly connected with a sliding sleeve (4).

5. The construction beam slab winter heat preservation maintenance device according to claim 4, characterized in that, The bottom of the inner wall of the main sheath (1) is fixedly connected with a guide rail (31), and the bottom of the outer wall of the side sheath (3) is fixedly connected with a sliding sleeve (4).

6. The construction beam slab winter heat preservation maintenance device according to claim 1, characterized in that, The bottom of the inner wall of the main sheath (1) is fixedly connected with a guide rail (31), and the bottom of the outer wall of the side sheath (3) is fixedly connected with a sliding sleeve (4).

7. The construction beam slab winter heat preservation maintenance device according to claim 1, characterized in that, The top of the controller (19) is provided with a display screen (21), and the display screen (21) is provided below with uniformly distributed buttons (20).

8. The construction beam slab winter heat preservation maintenance device according to claim 7, characterized in that, The top of the controller (19) is provided with a display screen (21), and the display screen (21) is provided below with uniformly distributed buttons (20). The top of the controller (19) is provided with a display screen (21), and the display screen (21) is provided below with uniformly distributed buttons (20). The top of the controller (19) is provided with a display screen (21), and the display screen (21) is provided below with uniformly distributed buttons (20). The top of the controller (19) is provided with a display screen (21), and the display screen (21) is provided below with uniformly distributed buttons (20).

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