Die casting type concrete supporting device

Abstract

The utility model provides a mold injection type concrete supporting device, and relates to the technical field of tunneling construction, the device comprises a plurality of templates, a plurality of supporting plates, a plurality of supporting rods and a plurality of supporting rods, the moving mechanisms are used for being arranged at the end, away from the cutter head, of the shield in the circumferential direction at intervals, the moving mechanisms are correspondingly connected with the formworks to drive the formworks to move relative to the shield so that the formworks can be switched between the recovery state and the supporting state, and in the recovery state, the formworks are recovered into the shield; and in the supporting state, all the formworks extend out of the shield and are erected between the two adjacent steel arches, so that an annular material injection area is defined by the formworks and the steel arches. According to the mold injection type concrete supporting device, the problem that a shield below the spraying position is polluted due to back splashing of sprayed concrete can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel excavation construction, and in particular to a cast-in-place concrete support device. Background Art

[0002] A tunnel boring machine is a tunnel construction machine that uses a rotating cutter to excavate, crush the surrounding rock in the hole and excavate to form the entire tunnel section. It mainly includes a cutterhead, a shield, a support and propulsion mechanism, and a support mechanism. The support mechanism is the core part of the tunnel boring machine and is set at the end of the shield away from the cutterhead. When the tunnel boring machine encounters crushed surrounding rock during excavation, a steel arch frame can be installed at the crushing point to play a supporting role, and the surrounding rock around the steel arch frame can be sprayed and reinforced to avoid surrounding rock collapse and affect the normal excavation of the tunnel boring machine.

[0003] At present, the existing support mechanism includes a steel arch frame rotating ring and a support arm, wherein the support arm is arranged at intervals along the circumference of the steel arch frame rotating ring. The support arm is controlled to grab the first steel arch frame and rotate the steel arch frame rotating ring to reserve grabbing space for the subsequent support arm. After grabbing the second steel arch frame, the second steel arch frame and the first steel arch frame are tightened and connected by bolts. The above operation is repeated to complete the assembly of the steel arch frame at the broken surrounding rock, and then the surrounding rock around the steel arch frame is sprayed and reinforced by manually holding a spray mixing tube.

[0004] However, when the above-mentioned support mechanism is in support operation, the sprayed concrete will splash back under the action of gravity, thereby contaminating the shield below the spraying point and affecting the normal excavation of the tunnel boring machine. Utility Model Content

[0005] In view of this, the present application provides a cast-in-place concrete support device to solve the problem of contamination of the shield below the injection point due to splashback of the injected concrete.

[0006] In order to achieve the above-mentioned purpose, the present application provides a cast-in-place concrete support device, which adopts the following technical solutions:

[0007] The present application provides a cast-in-place concrete support device, which is used for a support mechanism of a tunnel boring machine. The tunnel boring machine also includes a shield, a cutterhead is installed at one end of the shield, and the support mechanism is arranged at the other end thereof. The support mechanism also includes a steel arch rotating ring, and a plurality of tightening arms are arranged at intervals on the steel arch rotating ring, which are used to circumferentially install the steel arch to the inner wall of the tunnel to reinforce and support the tunnel. The cast-in-place concrete support device includes:

[0008] A plurality of templates, each of which is provided with a material injection port;

[0009] A plurality of moving mechanisms are provided, each of which is used to be circumferentially spaced at the end of the shield away from the cutter disc, and each of the moving mechanisms is correspondingly connected to each of the templates to drive each of the templates to move relative to the shield, so that each of the templates can be switched between a recovery state and a support state. In the recovery state, each of the templates is retracted into the shield; in the support state, each of the templates extends out of the shield and is erected between two adjacent steel arch frames to form an annular injection area together with the steel arch frames.

[0010] In a possible implementation, the moving mechanism includes a connecting assembly and a driving member, and the template is used to be connected to the shield through the connecting assembly;

[0011] The driving member is used to be arranged on the inner side of the shield, and the driving end of the driving member is connected to the template to drive the template to move relative to the shield.

[0012] In a possible implementation manner, at least two connection components are connected to the same template.

[0013] In a possible implementation, the connecting assembly includes a first sleeve, a second sleeve and a connecting rod, the first sleeve is arranged on the template, the second sleeve is used to be arranged on the inner side of the shield, and both ends of the connecting rod are respectively inserted into the first sleeve and the second sleeve.

[0014] In a possible implementation manner, a connecting plate is provided on the outer side wall of the second sleeve, and the second sleeve is used to be connected to the inner side surface of the shield through the connecting plate.

[0015] In a possible implementation, a first slot and a second slot are respectively formed on the first sleeve and the second sleeve;

[0016] The connecting rod is provided with a first slider and a second slider, the first slider and the second slider are respectively arranged at two ends of the connecting rod, and the first slider and the second slider are respectively inserted into the first slot and the second slot to limit the moving distance of the template.

[0017] In a possible implementation, the driving member is a propulsion cylinder, and a driving end of the propulsion cylinder abuts against a side of the template facing the shield to drive the template to move relative to the shield.

[0018] In a possible implementation, a reset mechanism is also included;

[0019] The resetting mechanism is used to connect the driving end of the propulsion cylinder and the template, so that in the recovery state, the template follows the driving end of the propulsion cylinder and is retracted into the shield.

[0020] In a possible implementation, the reset mechanism includes a first connecting block, a second connecting block and a connecting piece, the first connecting block is arranged on the template, the second connecting block is arranged on the driving end of the thrust cylinder, and the two ends of the connecting piece are respectively connected to the first connecting block and the second connecting block.

[0021] In a possible implementation, the template is a curved plate.

[0022] The present application provides a cast-in-place concrete support device, comprising a plurality of templates and a plurality of moving mechanisms, wherein each moving mechanism is arranged at an interval at the end of the shield in the circumferential direction and is connected to each template accordingly. When the tunnel boring machine needs to spray and reinforce the surrounding rock around the steel arch frame, each moving mechanism is operated to drive each template to move, and each template is extended out of the shield until each template is erected between two adjacent steel arch frames, and concrete is sprayed into the annular injection area formed by each template and the steel arch frame through the preset injection port on each template. At the same time, due to the gravity of the concrete itself, the concrete that fails to be adsorbed on the surrounding rock in time will splash back to the template under the surrounding rock. At this time, the template can prevent the splashed concrete from contaminating the shield under the surrounding rock; after the concrete is initially solidified, each moving mechanism is operated to retract each template into the shield, thereby avoiding unnecessary wear of the template exposed outside the shield by the tunnel boring machine during the excavation process.

[0023] Therefore, by setting up multiple templates and multiple moving mechanisms, on the one hand, each template can play a role in recycling concrete, thereby improving the utilization rate of concrete; on the other hand, the problem of the shield under the surrounding rock being contaminated due to the fall of concrete is solved, thereby extending the service life of the tunnel boring machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to illustrate and explain the present application, and the present application is not limited to the specific implementation methods described below.

[0025] Figure 1 A schematic diagram of the installation method of the cast-in-place concrete support device provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the structure of the cast-in-place concrete support device in a recovered state provided in an embodiment of the present application;

[0027] Figure 3A schematic diagram of the structure of the cast-in-place concrete support device in the support state provided in an embodiment of the present application;

[0028] Figure 4 for Figure 1 Structural diagram of the middle template and moving mechanism;

[0029] Figure 5 for Figure 4 Schematic diagram of the structure of the connecting rod.

[0030] Description of reference numerals:

[0031] 100-template;

[0032] 110- injection port;

[0033] 200-mobile mechanism;

[0034] 210-connection assembly;

[0035] 211-first sleeve;

[0036] 211a-first slot;

[0037] 212- second sleeve;

[0038] 212a-second slot;

[0039] 213-connecting rod;

[0040] 213a-first slider; 213b-second slider;

[0041] 214-connecting plate;

[0042] 220-driving member;

[0043] 300-reset mechanism;

[0044] 310 - first connecting block; 320 - second connecting block; 330 - connecting piece.

[0045] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of this application clearer, the technical solution in this application and how the technical solution in this application solves the above-mentioned technical problems will be clearly and completely described below with specific embodiments and in combination with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein.

[0050] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0051] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0052] A tunnel boring machine is a tunnel construction machine that uses a rotating cutter to excavate, crush the surrounding rock in the hole and excavate to form the entire tunnel section. It mainly includes a cutterhead, a shield, a support and propulsion mechanism, and a support mechanism. The support mechanism is the core part of the tunnel boring machine and is set at the end of the shield away from the cutterhead. When the tunnel boring machine encounters crushed surrounding rock during excavation, a steel arch frame can be installed at the crushing point to play a supporting role, and the surrounding rock around the steel arch frame can be sprayed and reinforced to avoid surrounding rock collapse and affect the normal excavation of the tunnel boring machine.

[0053] At present, the existing support mechanism includes a steel arch frame rotating ring and a support arm, wherein the support arm is arranged at intervals along the circumference of the steel arch frame rotating ring. The support arm is controlled to grab the first steel arch frame and rotate the steel arch frame rotating ring to reserve grabbing space for the subsequent support arm. After grabbing the second steel arch frame, the second steel arch frame and the first steel arch frame are tightened and connected by bolts. The above operation is repeated to complete the assembly of the steel arch frame at the broken surrounding rock, and then the surrounding rock around the steel arch frame is sprayed and reinforced by manually holding a spray mixing tube.

[0054] However, when the above-mentioned support mechanism is in support operation, the sprayed concrete will splash back under the action of gravity, thereby contaminating the shield below the spraying point and affecting the normal excavation of the tunnel boring machine.

[0055] Based on this, the present application provides a cast-in-place concrete support device, including multiple templates and multiple moving mechanisms, wherein each moving mechanism is circumferentially spaced at the end of the shield and correspondingly connected to each template. When the tunnel boring machine needs to spray and mix the surrounding rock around the steel arch frame, each moving mechanism is operated to drive each template to move, and each template is extended out of the shield until each template is erected between two adjacent steel arch frames, and concrete is sprayed into the annular injection area formed by each template and the steel arch frame through the preset injection port on each template. At the same time, due to the gravity of the concrete itself, the concrete that fails to be adsorbed on the surrounding rock in time will splash back to the template under the surrounding rock. At this time, the template can prevent the splashed concrete from contaminating the shield under the surrounding rock; after the concrete is initially solidified, each moving mechanism is operated to retract each template into the shield, thereby avoiding unnecessary wear of the template exposed outside the shield by the tunnel boring machine during the excavation process.

[0056] Therefore, by setting up multiple templates and multiple moving mechanisms, on the one hand, each template can play a role in recycling concrete, thereby improving the utilization rate of concrete; on the other hand, the problem of the shield under the surrounding rock being contaminated due to the fall of concrete is solved, thereby extending the service life of the tunnel boring machine.

[0057] The technical solution of the present application is described in detail below with reference to the accompanying drawings using specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0058] A cast-in-place concrete support device is provided in an embodiment of the present application, which is used for a support mechanism of a tunnel boring machine. The tunnel boring machine also includes a shield, a cutterhead is installed at one end of the shield, and a support mechanism is provided at the other end thereof. The support mechanism also includes a steel arch frame rotating ring, and a plurality of tightening arms are arranged at intervals on the steel arch frame rotating ring for circumferentially installing the steel arch frame to the inner wall of the tunnel to reinforce and support the tunnel.

[0059] Reference Figures 1 to 4 As shown, the cast-in-place concrete support device includes a plurality of templates 100, each of which is provided with a material injection port 110; a plurality of moving mechanisms 200, each of which is used to be circumferentially spaced and arranged at the end of the shield away from the cutter disc, and each of the moving mechanisms 200 is correspondingly connected to each template 100 to drive each template 100 to move relative to the shield, so that each template 100 switches between a recovery state and a support state. In the recovery state, each template 100 is retracted into the shield; in the support state, each template 100 extends out of the shield and is erected between two adjacent steel arch frames to form an annular material injection area with the steel arch frames.

[0060] It should be noted that in the present application, there is no restriction on the arrangement of each template 100 relative to the shield, that is, the size of each template 100 and the arrangement density of each mobile mechanism 200 can be set according to the actual scenario to ensure that each template 100 and the steel arch frame form a closed annular injection area.

[0061] At the same time, in the present application, in order to avoid the situation where the concrete sprayed into the annular injection area flows out from the gap between the upper surface of the template 100 and the outer edge of the steel arch frame due to the insufficient fit between the template 100 and the steel arch frame, the template 100 can be lifted by using the tensioning arm arranged on the rotating ring of the steel arch frame, that is, the circumferential position of the tensioning arm on the rotating ring of the steel arch frame is adjusted, and the tensioning arm is operated to lift the lower surface of the template 100 until the template 100 and the steel arch frame are tightly fitted. As a result, not only the sealing between the template 100 and the steel arch frame is enhanced, but also the tensioning arm can provide support for the template 100, thereby reducing the connection pressure of the moving mechanism 200.

[0062] In the present application, when the tunnel boring machine needs to spray-mix and reinforce the surrounding rock around the steel arch frame, each moving mechanism 200 is operated to drive each template 100 to move, and each template 100 is extended outside the shield until each template 100 is erected between two adjacent steel arch frames, and concrete is sprayed into the annular injection area formed by each template 100 and the steel arch frame through the preset injection port on each template 100. At the same time, due to the gravity of the concrete itself, the concrete that fails to be adsorbed on the surrounding rock in time will splash back onto the template 100 under the surrounding rock. At this time, the template 100 can prevent the splashed concrete from contaminating the shield under the surrounding rock; after the concrete is initially solidified, each moving mechanism 200 is operated to retract each template 100 into the shield, thereby avoiding unnecessary wear of the template 100 exposed outside the shield by the tunnel boring machine during the excavation process.

[0063] Therefore, by setting up multiple templates 100 and multiple moving mechanisms 200, on the one hand, each template 100 can play a role in recycling concrete, thereby improving the utilization rate of concrete; on the other hand, the problem of the shield under the surrounding rock being contaminated due to the fall of concrete is solved, thereby extending the service life of the tunnel boring machine.

[0064] In some embodiments, the moving mechanism 200 includes a connecting component 210 and a driving member 220, and the template 100 is used to be connected to the shield through the connecting component 210; the driving member 220 is used to be arranged on the inner side of the shield, and the driving end of the driving member 220 is connected to the template 100 to drive the template 100 to move relative to the shield.

[0065] Here, by providing the connection assembly 210 and the driving member 220, not only the assembly between the template 100 and the moving mechanism 200 is facilitated, but also reliable transmission is formed between the template 100 and the moving mechanism 200, so that the template 100 can be driven to move relative to the shield.

[0066] Furthermore, in some embodiments, the same template 100 is connected to at least two connection components 210 .

[0067] It is understandable that in the present application, there is no restriction on the number of connection components 210, and it is sufficient to ensure that the connection components 210 can support the template so that the template 100 can be switched between the recovery state and the support state. In this embodiment, at least two connection components 210 are connected to the same template 100, which reduces the connection pressure of a single connection component 210 and improves the stability of the template 100 in the support state, thereby preventing the concrete sprayed into the annular injection area from flowing out of the gap between the upper surface of the template 100 and the outer edge of the steel arch frame due to the back and forth shaking of the template 100.

[0068] In some embodiments, the connecting assembly includes a first sleeve 211, a second sleeve 212 and a connecting rod 213. The first sleeve 211 is set on the template 100, the second sleeve 212 is used to be set on the inner side of the shield, and both ends of the connecting rod 213 are respectively inserted into the first sleeve 211 and the second sleeve 212.

[0069] In the above embodiment, the connecting rod 213 is used as a bridge to ensure a reliable connection between the template 100 and the shield. At the same time, the first sleeve 211 provided on the template 100 and the second sleeve 212 provided on the shield respectively limit the two ends of the connecting rod 213 circumferentially, thereby improving the anti-vibration ability of the connecting rod 213, thereby further improving the stability of the template 100 in the supporting state.

[0070] In some embodiments, a connecting plate 214 is disposed on the outer side wall of the second sleeve 212 , and the second sleeve 212 is used to be connected to the inner side surface of the shield through the connecting plate 214 .

[0071] Here, a connecting plate 214 is added to the outer wall of the second sleeve 212. Compared with the direct connection between the second sleeve 212 and the shield, the connecting plate 214 can convert the line connection between the second sleeve 212 and the shield into a surface connection between the second sleeve 212 and the connecting plate 214, and between the connecting plate 214 and the shield, thereby improving the vibration resistance of the second sleeve 212 and thereby improving the stability of the template 100 in the supporting state.

[0072] Reference Figures 1 to 5 As shown, in some embodiments, the first sleeve 211 and the second sleeve 212 are respectively provided with a first groove 211a and a second groove 212a; the connecting rod 213 is provided with a first slider 213a and a second slider 213b, the first slider 213a and the second slider 213b are respectively arranged at two ends of the connecting rod 213, and the first slider 213a and the second slider 213b are respectively inserted into the first groove 211a and the second groove 212a to limit the moving distance of the template 100.

[0073] It is understandable that in the present application, there is no restriction on the specific connection form between the connecting rod 213 and the first sleeve 211 and the second sleeve 212, and it is sufficient to ensure that the connecting rod 213 can always be inserted in the first sleeve 211 and the second sleeve 212. In this embodiment, the first slot 211a and the second slot 212a are respectively provided on the first sleeve 211 and the second sleeve 212, and the first slider 213a and the second slider 213b are respectively provided at both ends of the connecting rod 213. The first slot 211a limits the first slider 213a, and the second slot 212a limits the second slider 213b, so as to limit the moving distance of the template 100, so that the template 100 is just erected between two adjacent steel arch frames, and there is no need to repeatedly adjust the position of the template 100, thereby improving the overall support efficiency of the cast-in-place concrete support device.

[0074] In some embodiments, the driving member 220 is a propulsion cylinder, and the driving end of the propulsion cylinder abuts against the side of the template 100 facing the shield to drive the template 100 to move relative to the shield.

[0075] In the above embodiment, since the propulsion cylinder is part of the support and propulsion mechanism in the tunnel boring machine, the driving member 220 is configured as a propulsion cylinder, and there is no need to add a new driving device to drive the template 100 to move, thereby reducing the manufacturing cost of the cast-in-place concrete support device.

[0076] In some embodiments, a reset mechanism 300 is also included; the reset mechanism 300 is used to connect the driving end of the propulsion cylinder and the template 100, so that in the recovery state, the template 100 follows the driving end of the propulsion cylinder and is retracted into the shield.

[0077] Here, since the driving end of the thrust cylinder is in contact with the side of the template 100 facing the shield and is not connected, the template 100 can only be pushed out of the shield. Even if the template is switched from the recovery state to the support state, the template cannot be recovered. Therefore, a reset mechanism 300 is added to ensure that the template 100 can be switched from the support state to the recovery state, thereby avoiding unnecessary wear on the template 100 exposed outside the shield during the tunnel boring machine's excavation process.

[0078] In some embodiments, the reset mechanism 300 includes a first connecting block 310, a second connecting block 320 and a connecting member 330. The first connecting block 310 is set on the template 100, the second connecting block 320 is set on the driving end of the thrust cylinder, and the two ends of the connecting member 330 are respectively connected to the first connecting block 310 and the second connecting block 320.

[0079] In the above embodiment, by providing the first connecting block 310, the second connecting block 320 and the connecting piece 330, not only the assembly between the template 100 and the thrust cylinder is facilitated, but also a reliable connection is formed between the template 100 and the thrust cylinder, so that in the recovery state, the template 100 can be retracted into the shield following the driving end of the thrust cylinder.

[0080] It can also be understood that in the present application, there is no limitation on the specific structure of the connector 330. The connector 330 can be configured as a chain or a wire rope, etc., and can be set according to the actual scenario to ensure that a reliable connection can be formed between the template 100 and the thrust cylinder.

[0081] In some embodiments, the template 100 is a curved plate.

[0082] Here, the template 100 is set as an arc-shaped plate to fit the shape of the steel arch frame, ensuring that the template 100 and the steel arch frame can fit tightly, further enhancing the sealing between the template 100 and the steel arch frame.

[0083] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps disclosed in this application can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in this application can be achieved, and this document does not limit this.

[0084] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the principles of this application should be included in the protection scope of this application.

Claims

1. A cast-in-place concrete support device, used for a support mechanism of a tunnel boring machine, the tunnel boring machine further comprising a shield, a cutterhead is mounted on one end of the shield, and the support mechanism is arranged on the other end thereof, the support mechanism further comprising a steel arch rotating ring, a plurality of tightening arms are arranged at intervals on the steel arch rotating ring, for circumferentially mounting the steel arch to the inner wall of the tunnel to reinforce and support the tunnel, characterized in that: The cast-in-place concrete support device comprises: A plurality of templates (100), each of the templates (100) being provided with a material injection port (110); A plurality of moving mechanisms (200), each of the moving mechanisms (200) is used to be arranged at circumferential intervals at the end of the shield away from the cutter disc, and each of the moving mechanisms (200) is correspondingly connected to each of the templates (100) to drive each of the templates (100) to move relative to the shield, so that each of the templates (100) switches between a recovery state and a support state. In the recovery state, each of the templates (100) is retracted into the shield; in the support state, each of the templates (100) extends out of the shield and is erected between two adjacent steel arch frames to form an annular injection area with the steel arch frames.

2. The cast-in-place concrete support device according to claim 1, characterized in that: The moving mechanism (200) comprises a connecting component (210) and a driving member (220), and the template (100) is used to be connected to the shield via the connecting component (210); The driving member (220) is used to be arranged on the inner side of the shield, and the driving end of the driving member (220) is connected to the template (100) to drive the template (100) to move relative to the shield.

3. The cast-in-place concrete support device according to claim 2, characterized in that: At least two connection components (210) are connected to the same template (100).

4. The cast-in-place concrete support device according to claim 2, characterized in that: The connecting assembly (210) comprises a first sleeve (211), a second sleeve (212) and a connecting rod (213); the first sleeve (211) is arranged on the template (100); the second sleeve (212) is used to be arranged on the inner side of the shield; and two ends of the connecting rod (213) are respectively inserted into the first sleeve (211) and the second sleeve (212).

5. The cast-in-place concrete support device according to claim 4, characterized in that: The outer side wall of the second sleeve (212) is provided with a connecting plate (214), and the second sleeve (212) is used to be connected to the inner side surface of the shield through the connecting plate (214).

6. The cast-in-place concrete support device according to claim 4, characterized in that: The first sleeve (211) and the second sleeve (212) are respectively provided with a first slot (211a) and a second slot (212a); The connecting rod (213) is provided with a first slider (213a) and a second slider (213b), the first slider (213a) and the second slider (213b) are respectively arranged at two ends of the connecting rod (213), and the first slider (213a) and the second slider (213b) are respectively inserted into the first slot (211a) and the second slot (212a) to limit the moving distance of the template (100).

7. The cast-in-place concrete support device according to claim 2, characterized in that: The driving member (220) is a propulsion cylinder, and the driving end of the propulsion cylinder abuts against the side of the template (100) facing the shield to drive the template (100) to move relative to the shield.

8. The cast-in-place concrete support device according to claim 7, characterized in that: Also includes a reset mechanism (300); The resetting mechanism (300) is used to connect the driving end of the propulsion cylinder and the template (100), and in the recovery state, the template (100) is retracted into the shield following the driving end of the propulsion cylinder.

9. The cast-in-place concrete support device according to claim 8, characterized in that: The reset mechanism (300) comprises a first connection block (310), a second connection block (320) and a connection piece (330); the first connection block (310) is arranged on the template (100); the second connection block (320) is arranged on the driving end of the propulsion cylinder; and the two ends of the connection piece (330) are respectively connected to the first connection block (310) and the second connection block (320).

10. The cast-in-place concrete support device according to any one of claims 1 to 9, characterized in that: The template (100) is a curved plate.

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