Mass concrete middle condensation curing device and construction technology

Abstract

The present invention relates to the field of concrete curing, and discloses a large-volume concrete middle condensation curing device and construction technology, including a box body, a cross bar, a water inlet device, an air cooling device, a fixing component, a wireless temperature sensor and an electric telescopic rod. While the airbag is inflated, air enters the interior of the cavity through the air inlet pipe, so that the air enters the air outlet pipe for circulation, and the heat is absorbed and discharged by the air. The ventilation fan accelerates the internal air circulation and the heat dissipation speed. If the internal temperature is too high, the wireless temperature sensor transmits a signal to the signal receiver, so that the power supply controller controls the electromagnetic pump to pump water from the interior of the water collection tank, and enters the water collection cavity through the water collection pipe and the water distribution pipe, and is discharged by the water outlet pipe after further absorbing heat. The combined use of air cooling and water cooling improves the cooling effect, prevents the concrete from easily generating temperature joints, automatically controls the water inflow at the same time to reduce the waste of water resources, and has a low manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the field of concrete curing, and particularly to a mid-concrete condensation curing device and construction technology for mass concrete. Background Art

[0002] In the high-quality construction process of concrete, especially mass concrete, it is required to strictly control its temperature and keep the internal temperature of the concrete within the allowable design range. Due to the large heat of hydration of cement, the pre-temperature control of mass concrete is essentially a cooling process, that is, cooling the concrete.

[0003] A mass concrete condensation device is disclosed in the Chinese invention patent with the publication number CN113668864A. The mass concrete condensation device includes a box body and a cooling pipe installed outside the box body for cooling the concrete. A water storage port is also provided on the box body. The interior of the box body is divided into two independent chambers, upper and lower, by a partition. Among them, a fan for discharging hot air is arranged at the upper part of the upper chamber. The water outlet pipe is connected to the upper part of the upper chamber, and the water storage port is arranged at the upper part of the lower chamber. A water pump is installed at the bottom end of the lower chamber of the box body. The water inlet pipe is in a Γ shape, and the horizontal section at the top of the water inlet pipe is connected to the cooling pipe after passing through the box body. Check valves are arranged on both the water outlet pipe and the water inlet pipe. The structure of the present invention is compact and easy to manufacture, with good economy and is very practical for cooling mass concrete.

[0004] Regarding the above related technologies, the inventor believes that there are the following defects: The above equipment can walk on the surface of the poured concrete during use, but it cannot cool the interior of the concrete. If the equipment is used to cool the concrete inside, it is inconvenient to take out when the concrete solidifies. Summary of the Invention

[0005] To solve the technical problems of internal cooling of concrete and inconvenient removal of equipment, the present invention provides a mid-concrete condensation curing device and construction technology for mass concrete.

[0006] The present invention is implemented by the following technical solutions: A mid-concrete condensation curing device for mass concrete includes a box body, a cross bar, a water inlet device, an air cooling device, a fixing component, a wireless temperature sensor, and an electric telescopic rod. The cross bar slides on one side of the box body. The water inlet device for water circulation cooling is arranged inside the box body and used in cooperation with the cross bar. The air cooling device for heat exchange cooling is arranged at the bottom of the cross bar. The fixing component is arranged in adaptation with the air cooling device. The wireless temperature sensor is arranged inside the air cooling device. The electric telescopic rod is fixedly installed on one side of the box body, and the electric telescopic rod cooperates with the cross bar, the water inlet device, the air cooling device, and the fixing component to be inserted into the concrete for internal condensation.

[0007] Through the above technical solution, with the combined use of the water inlet device and the air cooling device, the heat inside the concrete can be quickly exchanged, improving the cooling speed.

[0008] As a further improvement of the above solution, the water inlet device includes a water collection tank, an electromagnetic pump, a power controller, a signal receiver, a telescopic hose, a water collection pipe, a water distribution pipe, a water collection cavity and a water outlet pipe. The electromagnetic pump is fixedly installed on the top of the water collection tank, and the electromagnetic pump is electrically connected to the power controller. The signal receiver penetrates through the top of the box body and is electrically connected to the power controller. One end of the telescopic hose is fixedly connected to the top of the electromagnetic pump. One end of the water collection pipe is fixedly connected to the other end of the telescopic hose. The top end of the water distribution pipe is fixedly connected to the lower surface of the water collection pipe, and the bottom end of the water distribution pipe is fixedly connected to the top of the water collection cavity. The water outlet pipe is fixedly connected to one side of the top of the water collection cavity.

[0009] Through the above technical solution, water can be introduced by the judgment of the wireless temperature sensor and used when the temperature is too high, which can avoid continuous water supply and reduce the waste of water resources.

[0010] As a further improvement of the above solution, the air cooling device includes an air guide pipe, a blower, an air inlet pipe, a cavity, an air outlet pipe and a ventilation fan. The air guide pipe is fixedly connected to one side of the blower. The air inlet pipe is fixedly connected to the bottom of the cavity. The air outlet pipe is fixedly connected to the top of the cavity. The ventilation fan is fixedly connected to one end of the air outlet pipe.

[0011] Through the above technical solution, the air inside the large-volume concrete can be kept flowing, the air flow rate can be increased, and the heat dissipation speed can be improved.

[0012] As a further improvement of the above solution, one end of the cross bar is fixedly connected to one end of the electric telescopic rod. A push handle is fixedly installed on one side of the box body, and a convex wheel is rotatably installed at the bottom of the box body. The convex wheel is regular hexagon-shaped. A chute corresponding to the cross bar is opened on one side of the box body. The wireless temperature sensor is fixedly installed inside the cavity, and the wireless temperature sensor is used in adaptation with the power controller and the signal receiver.

[0013] Through the above technical solution, the regular hexagon shape of the convex wheel can make the plane contact with the surface of the cast-in-place concrete, facilitating walking and maintaining stability, and having little impact on the concrete surface. When the concrete solidifies, the contact area is small, facilitating movement.

[0014] As a further improvement of the above solution, the water collection cavity is fixedly installed on the lower surface of the cross bar. The water collection pipe is arranged inside the cross bar. The water distribution pipe penetrates through the cross bar.

[0015] Through the above technical solution, it can automatically move up and down along with the cross bar, eliminating the need for manual disassembly by workers and reducing the labor intensity of workers.

[0016] As a further improvement of the above solution, a water injection pipe is provided on the front surface of the water collection tank, and the water collection tank is arranged inside the box body. The water inlet pipe of the electromagnetic pump is arranged at the bottom of the water collection tank.

[0017] Through the above technical solution, the required water can be stored inside the water collection tank first, and when it is used up, it can be refilled without the need for workers to continuously add water, with high automation.

[0018] As a further improvement of the above solution, the air outlet pipe is arranged inside the cross bar, and one end of the air outlet pipe penetrates through one end of the cross bar. The blower is fixedly installed at the bottom of the cross bar, and the air inflation volume of the blower is greater than the air outlet volume. The cavity is arranged inside the water collection cavity. The air inlet pipe is fixedly connected to the air bag, and the air guide pipe is threadedly connected and penetrates through the fixing ring to be connected to the air bag.

[0019] Through the above technical solution, water can absorb a part of the heat in the air, and when used in combination, it can improve the working efficiency, and can also improve the utilization rate of the equipment space and reduce the cost.

[0020] As a further improvement of the above solution, the fixing component includes a fixing ring, a fixing block, a fastening screw, and an air bag. The fixing block is fixedly connected to the upper surface of one side of the fixing ring. The fastening screw is arranged through the fixing block in a matching manner. The air bag is hermetically and fixedly connected to the fixing ring, and the air bag is in an oblong shape.

[0021] Through the above technical solution, it is convenient to insert into the interior of the concrete. When the curing is completed, the air bag deflates and the air bag shrinks and deforms, reducing the contact area with the concrete and facilitating the removal of the equipment.

[0022] As a further improvement of the above solution, the water collection cavity is slidably connected through the fixing ring inside the air bag, and grooves corresponding to the fastening screws are provided on the inner wall of the water collection cavity.

[0023] Through the above technical solution, after the air bag is used multiple times, it is inevitable that it will be damaged. The detachable fixing setting can facilitate the replacement of the damaged air bag.

[0024] As a further improvement of the above solution, the construction technology for the central condensation curing of mass concrete includes the following steps:

[0025] S1: Air bag fixation, filling the air bag with air through the blower and fixing it on the water collection cavity;

[0026] S2: Insertion, inserting the equipment into the cast-in-place concrete through the air bag;

[0027] S3: Air circulation, inflating the internal air cooling device through the blower to conduct heat exchange inside the concrete;

[0028] S4: System control. Signals are transmitted through wireless temperature sensors, and the power controller receives the signals through signal receivers for system control;

[0029] S5: Water circulation. When the temperature is too high, water spraying is controlled by an electromagnetic pump, and the water circulation can further exchange heat inside the concrete;

[0030] S6: Demolition. When the concrete curing is completed, the inflation is stopped, the airbag deforms and shrinks, facilitating the extraction of the equipment and removing the equipment.

[0031] Through the above technical solutions, rapid heat dissipation inside the concrete can be achieved, work efficiency can be improved, and at the same time, waste of water resources can be reduced.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0033] 1. While the airbag is inflated, air enters the inside of the cavity through the air inlet pipe, so that the air circulates through the air outlet pipe. Heat is absorbed by the air and discharged. The exhaust fan accelerates the internal air circulation and the heat dissipation speed. If the internal temperature is too high, the wireless temperature sensor transmits a signal to the signal receiver, causing the power controller to control the electromagnetic pump to pump water from the inside of the water collection tank, enter the water collection cavity through the water collection pipe and the water distribution pipe, further absorb heat and then be discharged through the water outlet pipe, and further exchange heat through water cooling. The design of the present invention improves the cooling effect by combining air cooling and water cooling, prevents the concrete from easily generating temperature cracks, automatically controls the water inflow at the same time to reduce the waste of water resources, and has a low manufacturing cost.

[0034] 2. The blower inflates the airbag through the air guide pipe, causing the airbag to expand and drive the fixed ring to slide upward on the surface of the water collection cavity. When the airbag is full, it is fixed on one side of the water collection cavity through the fixed ring, the fixed block and the fastening screw. The electric telescopic rod is controlled to pull the cross bar downward, so that the telescopic hose stretches and inserts the airbag and the equipment inside it into the concrete. The design of the present invention is convenient for replacement after the airbag is damaged after multiple uses, improving the practicability of the device. Brief Description of the Drawings

[0035] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0036] Figure 2 is a schematic internal structure diagram of the present invention;

[0037] Figure 3 is of the present invention Figure 2 an enlarged schematic structure diagram at A in;

[0038] Figure 4 is of the present invention Figure 1 an enlarged schematic structure diagram at B in;

[0039] Figure 5Schematic diagram of the internal structure of the crossbar of the present invention.

[0040] Main symbol descriptions:

[0041] 1. Box body; 2. Crossbar; 3. Pushing handle; 4. Convex wheel; 5. Water inlet device; 501. Water collecting tank; 502. Electromagnetic pump; 503. Power controller; 504. Signal receiver; 505. Telescopic hose; 506. Water collecting pipe; 507. Water distribution pipe; 508. Water collecting cavity; 509. Water outlet pipe; 6. Air cooling device; 601. Air duct; 602. Blower; 603. Air inlet pipe; 604. Cavity; 605. Air outlet pipe; 606. Exhaust fan; 7. Fixing component; 701. Fixing ring; 702. Fixing block; 703. Fastening screw; 704. Airbag; 8. Wireless temperature sensor; 9. Electric telescopic rod. Specific implementation manners

[0042] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0043] Embodiment 1: Please combine Figures 1-5, the large-volume concrete middle condensation curing device of this embodiment includes a box body 1, a cross bar 2, a wireless temperature sensor 8 and an electric telescopic rod 9. The cross bar 2 slides on one side of the box body 1. A chute corresponding to the cross bar 2 is opened on one side of the box body 1. A pusher 3 is fixedly installed on one side of the box body 1, and a convex wheel 4 is rotatably installed at the bottom of the box body 1. The convex wheel 4 is regular hexagon-shaped. One end of the cross bar 2 is fixedly connected to one end of the electric telescopic rod 9. The wireless temperature sensor 8 is fixedly installed inside the cavity 604, and the wireless temperature sensor 8 is adapted to be used with the power controller 503 and the signal receiver 504. The electric telescopic rod 9 is fixedly installed on one side of the box body 1, and the electric telescopic rod 9 cooperates with the cross bar 2, the water inlet device 5, the air cooling device 6 and the fixing component 7 to be inserted into the concrete for internal condensation. The electromagnetic pump 502 is fixedly installed on the top of the water collection tank 501. The water inlet pipe of the electromagnetic pump 502 is arranged at the bottom of the water collection tank 501. A water injection pipe is opened on the front surface of the water collection tank 501, and the water collection tank 501 is arranged inside the box body 1. The electromagnetic pump 502 is electrically connected to the power controller 503. The signal receiver 504 penetrates through the top of the box body 1 and is electrically connected to the power controller 503. One end of the telescopic hose 505 is fixedly connected to the top of the electromagnetic pump 502. One end of the water collection pipe 506 is fixedly connected to the other end of the telescopic hose 505. The water collection pipe 506 is arranged inside the cross bar 2. The top end of the water distribution pipe 507 is fixedly connected to the lower surface of the water collection pipe 506, and the bottom end of the water distribution pipe 507 is fixedly connected to the top of the water collection cavity 508. The water distribution pipe 507 penetrates through the cross bar 2. The water collection cavity 508 is slidably connected through the fixing ring 701 inside the air bag 704, and grooves corresponding to the fastening screws 703 are opened on the inner wall of the water collection cavity 508. The water collection cavity 508 is fixedly installed on the lower surface of the cross bar 2. The water outlet pipe 509 is fixedly connected to one side of the top of the water collection cavity 508. The air guide pipe 601 is fixedly connected to one side of the blower 602. The air guide pipe 601 is threadedly connected and penetrates through the fixing ring 701 to be connected to the air bag 704. The blower 602 is fixedly installed at the bottom of the cross bar 2, and the inflation volume of the blower 602 is greater than the air outlet volume. The air inlet pipe 603 is fixedly connected to the bottom of the cavity 604. The air inlet pipe 603 is fixedly connected to the air bag 704. The air outlet pipe 605 is fixedly connected to the top of the cavity 604. The cavity 604 is arranged inside the water collection cavity 508. The exhaust fan 606 is fixedly connected to one end of the air outlet pipe 605. The air outlet pipe 605 is arranged inside the cross bar 2, and one end of the air outlet pipe 605 penetrates through one end of the cross bar 2. The fixing component 7 includes a fixing ring 701, a fixing block 702, a fastening screw 703 and an air bag 704. The fixing block 702 is fixedly connected to the upper surface of one side of the fixing ring 701. The fastening screw 703 penetrates through the fixing block 702 and is arranged in a matching manner. The air bag 704 is hermetically and fixedly connected to the fixing ring 701, and the air bag 704 is oblong-shaped.

[0044] In the embodiment of the present application, the implementation principle of the large-volume concrete middle condensation curing device and construction technology is as follows: Turn on the blower 602, so that the blower 602 inflates the airbag 704 through the air duct 601, causing the airbag 704 to expand and drive the fixing ring to slide upward on the surface of the water collecting cavity 508. When the airbag 704 is full, it is fixed on one side of the water collecting cavity 508 through the fixing ring 701, the fixing block 702 and the fastening screw 703. Control the electric telescopic rod 9 to pull the cross bar 2 downward, so that the telescopic hose 505 stretches and inserts the airbag 704 and the equipment inside it into the concrete. While the airbag 704 is being inflated, air enters the inside of the cavity 604 through the air inlet pipe 603, so that the air passes through the air outlet pipe 605 for circulation, and the heat is absorbed and discharged by the air. The exhaust fan 606 accelerates the internal air circulation and speeds up the heat dissipation speed. If the internal temperature is too high, the wireless temperature sensor 8 transmits a signal to the signal receiver 504, so that the power controller 503 controls the electromagnetic pump 502 to pump water from the inside of the water collecting tank 501, and enters the water collecting cavity 508 through the water collecting pipe 506 and the water distribution pipe 507, and is discharged from the water outlet pipe 509 after further absorbing heat, and further heat exchange is carried out through water cooling to improve the cooling speed.

[0045] Embodiment 2: Combining Figures 1-5 , the construction technology of large-volume concrete middle condensation curing includes the following steps:

[0046] S1: Fixing. Inflate the airbag 704 through the blower 602 and fix it on the water collecting cavity 508. The expansion of the airbag 704 facilitates insertion into the concrete and can fully contact the surface of the concrete, increasing the contact area, improving the heat dissipation speed, and being convenient for replacement when damaged.

[0047] S2: Insertion. Insert the equipment into the cast-in-place concrete through the airbag 704. After the concrete curing is completed, stop inflating, and the airbag 704 shrinks and deforms, separating from the concrete for easy removal of the internal device.

[0048] S3: Air circulation. Inflate the internal air cooling device 6 through the blower 602 to carry out heat exchange inside the concrete, accelerate air circulation, speed up the heat exchange speed, and improve work efficiency.

[0049] S4: System control. Transmit signals through the wireless temperature sensor 8, and the power controller 503 receives signals through the signal receiver 504 for system control, and can control the spraying of water according to the temperature inside the concrete to prevent waste of water resources.

[0050] S5: Water circulation. When the temperature is too high, control the spraying of water through the electromagnetic pump 502. The water circulation can further carry out heat exchange inside the concrete, accelerate the heat exchange inside the concrete, and further accelerate the cooling speed.

[0051] S6: Demolition. When the concrete curing is completed, stop inflating, causing the airbag 704 to deform and shrink, facilitating the extraction of the equipment, and then remove the equipment.

[0052] Working principle: During operation, the worker pushes the equipment to the working location through the pusher 3 and the convex cam 4. The worker turns on the blower 602, causing the blower 602 to inflate the airbag 704 through the air duct 601. The inflation of the airbag 704 drives the fixing ring to slide upward on the surface of the water collecting cavity 508. When the airbag 704 is fully inflated, it is fixed to one side of the water collecting cavity 508 through the fixing ring 701, the fixing block 702, and the fastening screw 703. Then, control the electric telescopic rod 9 to pull the cross bar 2 downward, stretching the flexible hose 505 to insert the airbag 704 and the equipment inside it into the concrete. While the airbag 704 is being inflated, air enters the interior of the cavity 604 through the air inlet pipe 603, and then the air circulates through the air outlet pipe 605. The heat is absorbed by the air and discharged, and the ventilation fan 606 accelerates the internal air circulation to speed up the heat dissipation. If the internal temperature is too high, the wireless temperature sensor 8 transmits a signal to the signal receiver 504. The wireless temperature sensor 8 senses the temperature difference between the surface and the interior of the mass concrete. When the temperature difference is between 20 - 25 degrees, the power supply controller 503 controls the electromagnetic pump 502 to pump water from the interior of the water collecting tank 501, which enters the water collecting cavity 508 through the water collecting pipe 506 and the water distribution pipe 507. After further absorbing heat, it is discharged through the water outlet pipe 509, and heat exchange is further enhanced through water cooling to increase the cooling speed.

[0053] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. Large-volume concrete middle condensation curing device, Characterized in that, It includes a box body (1), a cross bar (2), a water inlet device (5), an air cooling device (6), a fixing component (7), a wireless temperature sensor (8) and an electric telescopic rod (9). The cross bar (2) slides on one side of the box body (1). The water inlet device (5) for water circulation cooling is arranged inside the box body (1) and used in cooperation with the cross bar (2). The air cooling device (6) for heat exchange cooling is arranged at the bottom of the cross bar (2). The fixing component (7) is arranged in adaptation with the air cooling device (6). The wireless temperature sensor (8) is arranged inside the air cooling device (6). The electric telescopic rod (9) is fixedly installed on one side of the box body (1), and the electric telescopic rod (9) cooperates with the cross bar (2), the water inlet device (5), the air cooling device (6) and the fixing component (7) to be inserted into the concrete for internal condensation; The water inlet device (5) includes a water collection tank (501), an electromagnetic pump (502), a power controller (503), a signal receiver (504), a telescopic hose (505), a water collection pipe (506), a water distribution pipe (507), a water collection cavity (508) and a water outlet pipe (509). The electromagnetic pump (502) is fixedly installed on the top of the water collection tank (501), and the electromagnetic pump (502) is electrically connected to the power controller (503). The signal receiver (504) penetrates through the top of the box body (1) and is electrically connected to the power controller (503). One end of the telescopic hose (505) is fixedly connected to the top of the electromagnetic pump (502). One end of the water collection pipe (506) is fixedly connected to the other end of the telescopic hose (505). The top end of the water distribution pipe (507) is fixedly connected to the lower surface of the water collection pipe (506), and the bottom end of the water distribution pipe (507) is fixedly connected to the top of the water collection cavity (508). The water outlet pipe (509) is fixedly connected to one side of the top of the water collection cavity (508); The air cooling device (6) includes an air guide pipe (601), a blower (602), an air inlet pipe (603), a cavity (604), an air outlet pipe (605) and a ventilation fan (606). The air guide pipe (601) is fixedly connected to one side of the blower (602). The air inlet pipe (603) is fixedly connected to the bottom of the cavity (604). The air outlet pipe (605) is fixedly connected to the top of the cavity (604). The ventilation fan (606) is fixedly connected to one end of the air outlet pipe (605); One end of the cross bar (2) is fixedly connected to one end of the electric telescopic rod (9). A push handle (3) is fixedly installed on one side of the box body (1), and a convex wheel (4) is rotatably installed at the bottom of the box body (1). The convex wheel (4) is regular hexagon-shaped. A chute corresponding to the cross bar (2) is opened on one side of the box body (1). The wireless temperature sensor (8) is fixedly installed inside the cavity (604), and the wireless temperature sensor (8) is used in adaptation with the power controller (503) and the signal receiver (504); The water collecting cavity (508) is fixedly installed on the lower surface of the cross bar (2), the water collecting pipe (506) is arranged inside the cross bar (2), and the water distribution pipe (507) penetrates through the cross bar (2); The air outlet pipe (605) is arranged inside the cross bar (2), and one end of the air outlet pipe (605) penetrates through one end of the cross bar (2). The blower (602) is fixedly installed at the bottom of the cross bar (2), and the air inflation volume of the blower (602) is greater than the air outlet volume. The cavity (604) is arranged inside the water collecting cavity (508). The air inlet pipe (603) is fixedly connected to the air bag (704), and the air guide pipe (601) is threadedly connected and penetrates through the fixing ring (701) to be connected to the air bag (704); The fixing assembly (7) includes a fixing ring (701), a fixing block (702), a fastening screw (703), and an air bag (704). The fixing block (702) is fixedly connected to the upper surface of one side of the fixing ring (701). The fastening screw (703) is arranged through the fixing block (702) in a matching manner. The air bag (704) is hermetically and fixedly connected to the fixing ring (701), and the air bag (704) is in an oblong shape; The water collecting cavity (508) is slidably connected through the fixing ring (701) and penetrates inside the air bag (704), and grooves corresponding to the fastening screws (703) are formed on the inner wall of the water collecting cavity (508).

2. The large-volume concrete middle condensation curing device according to claim 1, characterized in that, A water injection pipe is provided on the front surface of the water collecting tank (501), and the water collecting tank (501) is arranged inside the box body (1). The water inlet pipe of the electromagnetic pump (502) is arranged at the bottom of the water collecting tank (501).

3. The construction technology for large-volume concrete middle condensation curing, characterized in that, The construction technology uses the condensation curing device described in claim 1 or 2, and the construction technology includes the following steps: S1: Fixing the air bag (704), filling the air bag (704) with air through the blower (602) and fixing it on the water collecting cavity (508); S2: Insertion, inserting the device into the cast-in-place concrete through the air bag (704); S3: Air circulation, inflating the internal air cooling device (6) through the blower (602) to perform heat exchange inside the concrete; S4: System control, transmitting signals through the wireless temperature sensor (8), and the power controller (503) receives signals through the signal receiver (504) to perform system control; S5: Water circulation, controlling water spraying through the electromagnetic pump (502) when the temperature is too high, and the water circulation can perform further heat exchange inside the concrete; S6: Removal, when the concrete curing is completed, stop inflating, so that the air bag (704) deforms and shrinks, facilitating the pulling out of the device and removing the device.

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