DE202022104198U1 - Device for shuttering a concrete structure in a confined space - Google Patents

Abstract

Device for shuttering a concrete structure in a narrow space, characterized in that it comprises an inner formwork compartment (2) with an opening at each of two ends, a connecting rod (4) which is firmly connected to the inner formwork compartment (2) at one end, a fixing rod (3) having one end fixedly connected to the inner formwork compartment (2), and an outer formwork compartment (5) detachably connected to the inner formwork compartment (2) via the connecting rod (4), the end surface of one of the inner formwork compartment (2) the opposite end of the fixing rod (3) rests against the surface of the outer formwork compartment (5).

Description

TECHNICAL AREA

The present application relates to the field of concrete shuttering, and more particularly to a device for shuttering a concrete structure in a confined space.

STATE OF THE ART

When constructing a building, a temporary concrete structure shuttering device is typically erected to build a concrete structure in a specified position and form a specified shape.

An existing device for encasing a concrete structure comprises steel skeletons, each connected in series via a reinforcing bar, and a plurality of formwork panels arranged in the steel skeleton. An opening is provided at each end of the steel skeleton. The panel faces of the plurality of formwork panels each abut against the steel skeleton and are fixedly connected to the interior of the steel skeleton, so that the plurality of formwork panels in the skeleton are assembled into a structure with an opening on two sides. After embedding the concrete formwork apparatus in a poured concrete wall in advance, concrete is then poured into the opening formed by the multiple formwork panels, so that concrete solidifies in the structure formed by the multiple formwork panels, after which the steel skeleton and the plurality of formwork panels are removed one by one.

In view of the above prior art, the inventor found that the concrete shuttering device cannot be easily removed from a narrow space when the concrete shuttering device is embedded in a poured concrete wall in advance and placed between the concrete structure and the poured concrete wall should be a narrow space.

CONTENTS OF THIS APPLICATION

In order to achieve a narrow space between a concrete structure and a poured concrete wall and a concrete shuttering device not to be removed from the narrow space, the present application provides a concrete shuttering device in a narrow space.

• Eine Vorrichtung zum Einschalen einer Betonstruktur in einem engen Raum umfasst ein Innenschalungsfach mit jeweils einer Öffnung an zwei Enden, eine Verbindungsstange, die mit einem Ende an das Innenschalungsfach fest angeschlossen ist, eine Fixierstange, die mit einem Ende an das Innenschalungsfach fest angeschlossen ist, und ein Außenschalungsfach, das über die Verbindungsstange mit dem Innenschalungsfach verbunden ist, wobei die Endfläche eines dem Innenschalungsfach abgewandten Endes der Fixierstange an der Oberfläche des Außenschalungsfaches anliegt.

For the device for shuttering a concrete structure in a narrow space according to the present application, the following configuration is used:

• An apparatus for shuttering a concrete structure in a narrow space comprises an inner formwork compartment having an opening at two ends, a connecting rod having one end fixed to the inner formwork compartment, a fixing rod having one end fixed to the inner formwork compartment, and an outer formwork compartment which is connected to the inner formwork compartment via the connecting rod, wherein the end surface of an end of the fixing rod which faces away from the inner formwork compartment abuts on the surface of the outer formwork compartment.

By using the above configuration, the inner formwork compartment is embedded in a poured concrete wall in advance, and then concrete is poured into a space between the inner formwork compartment and the outer formwork compartment. The inner formwork compartment itself has openings so that a narrow space is formed between the inner formwork compartment and the poured concrete wall. After the concrete has cooled, the inner formwork compartment, connecting rod and fixing rod remain in the concrete and do not need to be dismantled. Rather, only the outer formwork compartment is to be dismantled outside the concrete structure, so that there is a narrow space between the inner formwork compartment and the poured concrete wall, and at the same time there is no need to dismantle the concrete formwork device from the narrow space, which can help to increase the construction efficiency and speed up the construction progress contributes.

Optionally, it is provided that the fixing rod is provided in a large number and the connecting rod is provided in a large number, wherein the plurality of fixing rods and the plurality of connecting rods are each firmly connected to the inner formwork compartment.

The above configuration contributes to increasing the stability of the connection between the inner formwork compartment and the outer formwork compartment, and provides a space for pouring concrete between the inner formwork compartment and the outer formwork compartment.

Optionally, it is provided that the outer formwork compartment comprises two second side panels and a second main panel, which is firmly connected between the two second side panels, with through holes being formed both on the second side panels and on the second main panel for the passage of the connecting rods.

By using the above configuration, after inserting the plurality of tie rods into first through holes and second through holes, a nut is attached to the tie rods, respectively, so that the tie rods are fixed to the outer formwork compartment, and thus a stable connection is established between the inner formwork compartment and the outer formwork compartment.

It is optionally provided that a reinforcement bar is permanently connected to the outer formwork compartment, which is provided in large numbers and is divided into groups of two, with the individual groups of reinforcement bars being arranged at a distance from one another, with one reinforcement element being permanently connected to the two reinforcement bars of each group , and wherein the connecting rod may be arranged through two reinforcing bars of a group and arranged through the reinforcing member.

By employing the above configuration, the reinforcing bars contribute to increasing the structural strength of the outer formwork panel, while the reinforcing member enables stable connection between each two reinforcing bars.

Optionally, it is provided that an end of the connecting rod remote from the inner formwork compartment is provided with a first insertion hole, the device for shuttering further comprising a penetrating rod with which the first insertion hole is matched, the penetrating rod being removably inserted in the first insertion hole.

By using the above configuration, the penetrating rod can be disassembled from the connecting rod.

It is optionally provided that two plug-in holes are formed on the inner wall of the connecting rod, the axes of which overlap one another;
that two mounting holes are formed on the inner wall of the through-bar connecting the inner surface of the through-bar to the outer surface, the mounting hole overlapping with the axis of the plug-in hole;
and in that a plug-in rod is provided in the mounting hole and is matched to the plug-in hole, wherein the plug-in rod can be inserted into the plug-in hole.

By employing the above configuration, relative movement of the through-rod and the connecting rod relative to each other is prevented by the plug-in rod inserted in the plug-in hole.

Optionally, two ends of the mounting hole are provided with a movable plate and a fixed plate, respectively, with the fixed plate being fixed in the mounting hole;
and a through hole is formed on each of the fixed plate and the movable plate, the axis of the through hole on the fixed plate overlapping the axis of the through hole on the movable plate, the through holes being aligned with the connecting rod, respectively wherein the connecting rod can be inserted into the through hole on the fixed plate and the through hole on the movable plate at the same time, and wherein the connecting rod is fixedly connected to the inner portion of the through hole on the movable plate.

By adopting the above configuration, the movable plate and the fixed plate enable the insertion of the connecting rod into the mounting hole stably and the connecting rod to be movable in the mounting hole.

It is optionally provided that a spring is provided between the movable plate and the fixed plate, the two ends of which are each firmly connected to the fixed plate and the movable plate, the spring being pushed onto the connecting rod.

By adopting the above configuration, when the penetrating rod is inserted into the connecting rod by means of the spring's own elastic force, the connecting rod can enter the mounting hole. When the plug rod is moved to a position corresponding to the plug hole, the plug rod can be automatically inserted into the plug hole by the elastic force of the spring.

1. 1. Durch Verwendung der oben genannten Ausgestaltung wird das Innenschalungsfach im Voraus in eine gegossene Betonwand eingebettet und dann wird Beton in einen Zwischenraum zwischen dem Innenschalungsfach und dem Außenschalungsfach eingegossen. Das Innenschalungsfach weist selbst Öffnungen auf, sodass zwischen dem Innenschalungsfach und der gegossenen Betonwand ein enger Raum gebildet wird. Nach Abkühlen des Betons verbleiben das Innenschalungsfach, die Verbindungsstange und die Fixierstange im Beton und müssen nicht demontiert werden. Vielmehr soll allein das Außenschalungsfach außerhalb der Betonstruktur demontiert werden, sodass zwischen dem Innenschalungsfach und der gegossenen Betonwand ein enger Raum vorhanden ist und gleichzeitig keine Demontage der Vorrichtung zum Einschalen von Beton aus dem engen Raum notwendig ist, was zum Erhöhen der Baueffizienz und zum Beschleunigen des Baufortschritts beiträgt.
2. 2. Die Verstärkungsstangen tragen zum Erhöhen der strukturellen Festigkeit des Außenschalungsfaches bei, während das Verstärkungselement eine stabile Verbindung zwischen zwei Verstärkungsstangen ermöglicht.
3. 3. Beim Einführen der hindurchgehenden Stange in die Verbindungsstange kann mittels der eigenen elastischen Kraft der Feder die Steckstange in das Montageloch einfahren. Beim Bewegen der Steckstange bis zu einer mit dem Steckloch korrespondierenden Position kann die Steckstange über die elastische Kraft der Feder automatisch in das Steckloch eingeführt werden.

As noted above, the present application includes at least one of the following beneficial technical effects:

1. 1. By using the above configuration, the inner formwork compartment is embedded in a poured concrete wall in advance, and then concrete is poured into a space between the inner formwork compartment and the outer formwork compartment. The inner formwork compartment itself has openings so that a narrow space is formed between the inner formwork compartment and the poured concrete wall. After the concrete has cooled down, the inner formwork compartment, the connecting rod and the fixing rod remain in the concrete and do not need to be dismantled. Rather, only the outer formwork compartment is to be dismantled outside the concrete structure, so that there is a narrow space between the inner formwork compartment and the poured concrete wall, and at the same time there is no need to dismantle the concrete formwork device from the narrow space, which can help to increase the construction efficiency and speed up the construction progress contributes.
2. 2. The reinforcing rods contribute to increasing the structural strength of the outer formwork compartment, while the reinforcing member enables stable connection between two reinforcing rods.
3. 3. When inserting the penetrating rod into the connecting rod, by means of the spring's own elastic force, the connecting rod can enter the mounting hole. When the plug rod is moved to a position corresponding to the plug hole, the plug rod can be automatically inserted into the plug hole by the elastic force of the spring.

character list

• 1 eine schematische Strukturansicht einer Vorrichtung zum Einschalen einer Betonstruktur in einem engen Raum nach einem ersten Ausführungsbeispiel,
• 2 eine schematische Strukturansicht eines Innenschalungsfaches, einer Verbindungsstange und einer Fixierstangen nach dem ersten Ausführungsbeispiel,
• 3 eine schematische Strukturansicht der Vorrichtung zum Einschalen einer Betonstruktur in einem engen Raum nach einem zweiten Ausführungsbeispiel,
• 4 eine schematische Strukturansicht der Verbindungsstange nach dem zweiten Ausführungsbeispiel,
• 5 eine schematische Darstellung der Verbindungsbeziehung zwischen einer ersten Bewegungsstange, einer zweiten Bewegungsstange, einer ersten Kontaktplatte, einer zweiten Kontaktplatte, einer Steckstange und einer hindurchgehenden Stange nach dem zweiten Ausführungsbeispiel,
• 6 die Verbindungsbeziehung zwischen der ersten Bewegungsstange, der zweiten Bewegungsstange, einer ersten Begrenzungsstange, einer zweiten Begrenzungsstange, der ersten Kontaktplatte, der zweiten Kontaktplatte, der Steckstange, einer beweglichen Platte, einer festen Platte und einer Feder nach dem zweiten Ausführungsbeispiel und den jeweiligen Aufbau in einer schematischen Darstellung,
• 7 eine schematische Schnittansicht der ersten Bewegungsstange, der zweiten Bewegungsstange, der Steckstange, der beweglichen Platte, der festen Platte und der Feder, die in der hindurchgehenden Stange angeordnet sind,
• 8 eine schematische Ausschnittsvergrößerung der Steckstange, der beweglichen Platte, der festen Platte und der Feder, die sich in einem Montageloch befinden, gemäß 7.

show in it

• 1 a schematic structural view of a device for encasing a concrete structure in a confined space according to a first embodiment,
• 2 a schematic structural view of an inner formwork compartment, a connecting rod and a fixing rod according to the first embodiment,
• 3 a schematic structural view of the device for shuttering a concrete structure in a narrow space according to a second embodiment,
• 4 a schematic structural view of the connecting rod according to the second embodiment,
• 5 a schematic representation of the connection relationship among a first moving rod, a second moving rod, a first contact plate, a second contact plate, a plug rod and a penetrating rod according to the second embodiment,
• 6 the connection relationship among the first moving rod, the second moving rod, a first limit rod, a second limit rod, the first contact plate, the second contact plate, the plug rod, a movable plate, a fixed plate and a spring according to the second embodiment and the respective structures in one schematic representation,
• 7 a schematic sectional view of the first moving rod, the second moving rod, the plug rod, the moving plate, the fixed plate and the spring arranged in the passing rod,
• 8th a schematic detail enlargement of the connecting rod, the moving plate, the fixed plate and the spring located in a mounting hole according to FIG 7 .

Reference List

1

cast concrete wall;

2

inner formwork compartment;

21

First Side Plate;

22

First Main Plate;

3

fixation rod;

4

connecting rod;

41

First insertion hole;

42

plug hole;

5

outer formwork compartment,

51

Second Side Plate;

52

Second Main Plate;

53

reinforcement bar;

54

reinforcement element;

6

continuous rod;

61

Second insertion hole;

611

mounting hole;

62

Solid Plate;

63

moving plate;

64

push rod;

65

Feather;

66

First moving bar;

661

First contact plate;

662

First Perimeter Bar;

67

Second moving rod;

671

second contact plate,

672

Second limit bar.

DETAILED DESCRIPTION

Embodiments of the present application disclose an apparatus for shuttering a concrete structure in a confined space.

First embodiment:

It will be on 1 pointed out. A device for shuttering a concrete structure in a narrow space comprises an inner formwork compartment 2 with two open ends, a fixing rod 3, which is fixedly connected to the inner formwork compartment 2 at one end, a connecting rod 4, which is fixedly connected to the inner formwork compartment 2 at one end , and an outer formwork compartment 5 connected to the inner formwork compartment 2 via the connecting rod 4 . An end of the connecting rod 4 facing away from the inner formwork compartment 2 is provided with a thread. The outer formwork compartment 5 is channel-shaped. The alignment of the opening of the outer formwork compartment 5 corresponds to the alignment of the opening of the inner formwork compartment 2 and the inner formwork compartment 2 is located in the opening of the outer formwork compartment 5.

In use, the inner formwork compartment 2 is embedded in a cast concrete wall 1 in advance, and the opening of the inner formwork compartment 2 faces the cast concrete wall 1 at this time. A narrow space is formed between the opening of the inner formwork compartment 2 and the poured concrete wall 1 . A nut is attached to the connecting rod 4 and comes to rest against the outer formwork compartment 5 so that the inner formwork compartment 2 is firmly connected to the outer formwork compartment 5 . The end surface of an end of the fixing rod 3 facing away from the inner formwork compartment 2 bears against the surface of the outer formwork compartment 5 , so that a casting space is formed between the inner formwork compartment 2 and the outer formwork compartment 5 . Concrete is poured into the space between the inner formwork compartment 2 and the outer formwork compartment 5, and after cooling and solidifying, the outer formwork compartment 5 is dismantled while the inner formwork compartment 2, connecting rod 4 and fixing rod 3 remain in the concrete.

It will be on 2 pointed out. The inner formwork compartment 2 comprises two first side panels 21 and a first main panel 22 which is fixedly connected between the two first side panels 21 . The fixing rod 3 is fixedly connected to the outer surface of the first side plate 21 facing away from the opening of the inner formwork compartment 2 . The connecting rod 4 is fixedly connected to the outer surface of the second main panel 22 facing away from the opening of the inner formwork compartment 2 . Both the fixing rod 3 and the connecting rod 4 are perpendicular to the outer surface of the inner formwork compartment 2, and the length of the connecting rod 4 is greater than the length of the fixing rod 3. On the first side plate 21, three fixing rods 3 are provided, which extend along the length direction of the first side plate 21 are spaced from each other on the first side plate 21 are arranged. On the first side plate 21 are provided three connecting rods 4 spaced from each other along the length direction of the first side plate 21 on the first side plate 21 .

It will be on 2 pointed out. Nine fixing rods 3 are provided on the first main plate 22 , with three fixing rods 3 being spaced apart from one another along the length direction of the first main plate 22 . The three rows of fixing bars 3 are spaced from each other along the width direction of the first main panel 22 on the first main panel 22 . Six tie rods 4 are provided on the first main plate 22, with three tie rods 4 being spaced from each other along the length direction of the first main plate 22. As shown in FIG. The two rows of connecting rods 4 are spaced from each other along the width direction of the first main panel 22 and arranged in parallel with each other on the first main panel 22 . On the first main plate 22, the length direction of each row of fixing bars 3 is parallel to the length direction of each row of connecting bars 4, and the two rows of connecting bars 4 are spaced from each other in the two spaces of the three rows of fixing bars 3.

It will be on 1 pointed out. The outer formwork compartment 5 comprises two second side panels 51 and a second main panel 52 fixedly connected between the two side panels. On the second side plate 51, three first through holes are formed spaced apart from each other along the length direction of the second side plate 51, which are uniquely associated and matched with the three connecting rods 4 on the first side plate 21, so that the three connecting rods 4 on the first side plate 21 respectively enter the three first through holes can be introduced. Six second through holes are formed on the second main plate 52, which are uniquely associated and matched with the six connecting rods 4 on the first main plate 22, so that the six connecting rods 4 can be inserted into the six second through holes, respectively.

It will be on 1 pointed out. On the panel surface of a side of the outer formwork compartment 5 facing away from the inner formwork compartment 2 a reinforcing rod 53 is firmly attached. Each of the second main plate 52 and the second side plate 51 has six reinforcing bars 53 divided into groups of two. The three groups of reinforcing bars 53 are spaced from each other along the length direction of the second main plate 52 and the second length direction of the second side plate 51, respectively. The length direction of the six reinforcement bars 53 on the second main plate 52 is parallel to the length direction of the second main plate 52. The length direction of the six reinforcement bars 53 on the second side plate 51 is parallel to the width direction of the second side plate 51. The two reinforcement bars 53 of each group are from each other spaced apart, thus forming a space for the connecting rod 4 to pass through. The first through hole and the second through hole are connected to the space between the two reinforcing rods 53 of a group, respectively.

It will be on 1 pointed out. A reinforcing member 54 is fixedly connected between two reinforcing bars 53 and contributes to increasing the stability between the two reinforcing bars 53 .

It will be on 1 pointed out. In the longitudinal direction of the reinforcing member 54, two recesses are formed spaced from each other, each abutting and fixedly connected to the peripheral surface of the two reinforcing rods 53. A third through hole is formed in the center of the reinforcing member 54, the axis of which overlaps with the axis of the first through hole and the axis of the second through hole, respectively. The third through hole is matched with the connecting rod 4 so that the connecting rod 4 can be inserted into the third through hole. After leading out the connecting rod 4 from the third through hole and connecting a nut to the connecting rod 4, the nut abuts against the reinforcing member 54, whereby the stability of the connection between the nut and the connecting rod 4 is increased.

The operating principle of the first embodiment is as follows: the two first side plates 21 are embedded in the poured concrete wall 1 for positioning in advance, and the plural connecting rods 4 are then passed through the third through hole after passing through the first through hole and the second through hole. The connecting rod 4 is fixed to the outer formwork compartment 5 with a nut. In the space formed by the inner formwork compartment 2, the outer formwork compartment 5 and the poured concrete wall 1, concrete is poured. After the concrete has cooled, the external formwork compartment 5 is dismantled, while the inner formwork compartment 2, the fixing rod 3 and the connecting rod 4 remain in the concrete.

Second embodiment:

How out 2 and 4 results, the present exemplary embodiment differs from the first exemplary embodiment primarily in that the peripheral surface of an end of the connecting rod 4 facing away from the inner formwork compartment 2 is designed as a smooth surface and a first insertion hole 41 is formed on an end surface of the connecting rod 4, the length of which is less than is the length of the connecting rod 4.

On the inner wall of the connecting rod 4, two plug holes 42 are formed, the axes of which overlap with each other.

How out 3 and 4 the device further comprises a through-rod 6 mating with the first insertion hole 41 so that the through-rod 6 can be inserted into the first insertion hole 41 . A thread is formed on the peripheral surface of an end of the penetrating rod 6 opposite to the first insertion hole 41 . The length of the through-rod 6 is greater than the length of the first insertion hole 41. With the through-rod 6 inserted in the first insertion hole 41, a threaded portion of the through-rod 6 is outside of the first insertion hole 41.

How out 5 and 6 As can be seen, at the end surface of the threaded end of the penetrating rod 6, a second insertion hole 61 is formed, in which a first moving rod 66 and a second moving rod 67 are inserted. The length direction of the first moving rod 66 is parallel to the length direction of the second moving rod 67. Both the length of the first moving rod 66 and the length of the second moving rod 67 are longer than the length of the second insertion hole 61. One end of the first moving rod 66 and one end of the second movement rod 67 are located outside the traversing rod 6.

It will be on 6 pointed out. The end of the first moving rod 66 located outside the penetrating rod 6 is fixedly connected to a first contact plate 661 . The end of the second moving rod 67 located outside of the passing rod 6 is provided with a second contact plate 671 firmly connected. The plane of the first contact plate 661 and the plane of the second contact plate 671 are arranged parallel to each other.

How out 6 and 7 results, a first limiting rod 662 is firmly connected to the first movement rod 66 . A second limiting rod 672 is firmly connected to the second movement rod 67 . The first limit rod 662 and the second limit rod 672 are offset from each other on the first moving rod 66 and the second moving rod 67, respectively. Both the first limit rod 662 and the second limit rod 672 are located in the second insertion hole 61.

How out 6 and 7 results, a sixth through hole for passing the second limit rod 672 is provided on the first moving rod 66 . A seventh through hole for passing the first limit rod 662 is provided on the second moving rod 67 .

How out 6 and 7 As can be seen, an end of the first moving rod 66 inserted into the second insertion hole 61 and an end of the second moving rod 67 inserted into the second insertion hole 61 are fixedly connected to a connecting rod 64, respectively.

How out 7 As a result, two mounting holes 611 are formed on the outer peripheral surface of the penetrating rod 6, the axes of which overlap with each other and which are connected to the second insertion hole 61, respectively. The mounting holes 611 are located at a non-threaded end of the through rod 6.

How out 7 and 8th As can be seen, in the mounting hole 611, a movable plate 63 and a fixed plate 62 are provided spaced from each other, and the plane of the movable plate 63 and the plane of the fixed plate 62 are parallel to each other. The fixed plate 62 is fixed to the inside of the mounting hole 611 . A fourth through hole is formed on the fixed plate 62 and a fifth through hole is formed on the movable plate 63 . The axes of the fourth through hole and the fifth through hole overlap with each other.

How out 7 and 8th results, the two connecting rods 64 are firmly connected at one end to the first movement rod 66 and the second movement rod 67, respectively. The plug rod 64 is inserted into the fourth through hole and the fifth through hole at the same time. The length of the connecting rod 64 is greater than the length of the mounting hole 611, and two ends of the connecting rod 64 are outside of the mounting hole 611. An end of the two connecting rods 64 that is outside of the second insertion hole 61 and the passing rod 6 can be inserted into the two mounting holes 611 at the same time retract and the plug rod 64 can be inserted into the plug hole 42.

How out 7 and 8th results, the connecting rod 64 is fixed to the movable plate 63. Between the movable plate 63 and the fixed plate 62, a spring 65 is provided, which is pushed onto the connecting rod 64 and whose two ends are fixed to the fixed plate 62 and the movable plate 63, respectively.

The principle of operation of the second embodiment is as follows: The two first side plates 21 are embedded in the poured concrete wall 1 in advance for positioning. The through rod 6 is inserted into the first insertion hole 41 and the plug rod 64 is inserted into the plug hole 42 . The plural passing rods 6, after passing through the first through hole and the second through hole, are then passed through the third through hole. The rod 6 passing through is fixed to the outer formwork compartment 5 by means of a nut. In the space formed by the inner formwork compartment 2, the outer formwork compartment 5 and the poured concrete wall 1, concrete is poured. After the concrete cools, the inner formwork compartment 2, the fixing rod 3 and the connecting rod 4 remain in the concrete, and a force is applied to the first contact plate 661 and the second contact plate 671, so that the first moving rod 66 and the second moving rod 67 move toward each other. The plug-in rod 64 is removed from the plug-in hole 42 and the through-rod 6 is pulled out of the connecting rod 4 . Then the outer formwork compartment 5 is dismantled.

So far, only preferred exemplary embodiments of the present application have been explained, which in no way restrict the scope of protection of the application. Rather, any equivalent modifications made in the structure, form and spirit of the application are intended to be included within the scope of the application.

Claims (8)

Device for encasing a concrete structure in a narrow space, characterized in that it comprises an inner formwork compartment (2) each having an opening at two ends, a connecting rod (4) which is connected to the inner formwork with one end compartment (2), a fixing rod (3), one end of which is firmly connected to the inner formwork compartment (2), and an outer formwork compartment (5), which is detachably connected to the inner formwork compartment (2) via the connecting rod (4). is, wherein the end surface of the inner formwork compartment (2) facing away from the end of the fixing rod (3) rests on the surface of the outer formwork compartment (5). Device for encasing a concrete structure in a confined space claim 1 characterized in that the fixing rod (3) is provided in plurality and the connecting rod (4) is provided in plurality, the plurality of fixing rods (3) and the plurality of connecting rods (4) being fixed to the inner formwork compartment (2), respectively . Device for encasing a concrete structure in a confined space claim 2 , characterized in that the outer formwork compartment (5) comprises two second side panels (51) and a second main panel (52) which is fixedly connected between the two second side panels (51), with both the second side panels (51) and on the second main plate (52) through holes are respectively formed for passing the connecting rods (4). Device for encasing a concrete structure in a confined space claim 1 , characterized in that a reinforcement rod (53) is firmly connected to the outer formwork compartment (5), which is provided in large numbers and is divided into groups of two, the individual groups of reinforcement rods (53) being arranged at a distance from one another, the two reinforcing rods (53) of each group is fixedly connected to one reinforcing element (54), and wherein the connecting rod (4) can be arranged passing through two reinforcing rods (53) of a group and arranged passing through the reinforcing element (54). Device for encasing a concrete structure in a confined space claim 1 , characterized in that an end of the connecting rod (4) remote from the inner formwork compartment (2) is provided with a first insertion hole (41), the device for shuttering also comprising a rod (6) passing through, onto which the first insertion hole (41) is tuned, wherein the penetrating rod (6) is detachably inserted in the first insertion hole (41). Device for encasing a concrete structure in a confined space claim 5 , characterized in that on the inner wall of the connecting rod (4) two plug holes (42) are formed, the axes of which overlap with each other; that on the inner wall of the through-bar (6) two mounting holes (611) are formed connecting the inner surface of the through-bar (6) to the outer surface, the mounting hole (611) overlapping with the axis of the plug-in hole (42), and that a plug-in rod (64) is provided in the mounting hole (611) and is matched to the plug-in hole (42), wherein the plug-in rod (64) can be inserted into the plug-in hole (42). Device for encasing a concrete structure in a confined space claim 6 , characterized in that two ends of the mounting hole (611) are respectively provided with a movable plate (63) and a fixed plate (62), the fixed plate (62) being fixed in the mounting hole (611); and a through hole is formed on each of the fixed plate (62) and the movable plate (63), the axis of the through hole on the fixed plate (62) being aligned with the axis of that on the movable plate (63). through-hole overlapped, the through-holes being respectively matched with the connecting rod (64), whereby the connecting rod (64) can be simultaneously inserted into the through-hole located on the fixed plate (62) and the through-hole located on the movable plate (63), and the connecting rod (64) being fixed to the inside of the through hole provided on the movable plate (63). Device for encasing a concrete structure in a confined space claim 7 , characterized in that a spring (65) is provided between the movable plate (63) and the fixed plate (62), the two ends of which are respectively fixed to the fixed plate (62) and the movable plate (63), the spring (65) being slid onto the connecting rod (64).

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