Sliding formwork structure of tunnel support

Abstract

The invention relates to a slip form structure of a tunnel support, a plurality of steel arches are arranged in a tunnel at intervals, and the slip form structure is characterized by comprising pouring formworks arranged on the sides, away from the wall surface of the tunnel, of every two adjacent steel arches; the feeding hole is formed in the pouring template; the impeller is rotationally arranged on the side, close to the surface of the tunnel, of the pouring formwork and corresponds to the feeding hole in position, and the impeller is in a spiral shape; the two pulley blocks are arranged on the side portion of the pouring formwork and are oppositely arranged, the pulley blocks are arranged above the impeller, the two sliding wheels are arranged on the two adjacent steel arch frames in a sliding mode respectively, the pouring formwork slides in the extending direction of the steel arch frames by sliding the pulley blocks, the structure is simple, the structure is simple, and the operation is convenient. The use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel support, in particular to a sliding form structure of tunnel support. Background Art

[0002] With the continuous advancement of urban infrastructure construction, traffic congestion is becoming increasingly serious. Tunnels, as important channels connecting cities, play a key role in transportation. Tunnel construction can not only alleviate urban traffic pressure, but also improve the utilization efficiency of land resources and reduce the impact on the environment.

[0003] Currently, tunnels are constructed by setting up formwork inside the tunnel and pouring concrete between the formwork and the tunnel to form the tunnel wall structure. However, during the pouring process, it is usually necessary to continuously remove the formwork and re-set the formwork on top of the already poured wall, which wastes a lot of manpower and time in the pouring process. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a slipform structure for tunnel support. A feed hole is formed on the casting template to facilitate construction workers to cast between the casting template and the tunnel through the feed hole. After the casting is completed, the casting template is slid along the steel arch frame through a pulley set to move to the next casting position.

[0005] The technical solution to achieve the above purpose is a sliding form structure for tunnel support, in which a plurality of steel arches are arranged at intervals in the tunnel, and the sliding form structure comprises:

[0006] A casting template arranged on a side of two adjacent steel arches away from the wall of the tunnel;

[0007] a feed hole formed in the casting template;

[0008] an impeller rotatably arranged on a surface side of the casting template close to the tunnel and corresponding to the position of the feed hole, wherein the impeller is spiral-shaped; and

[0009] Two pulley blocks are arranged on the side of the casting template and are arranged opposite to each other. The pulley blocks are arranged above the impeller. The two sliding wheels are respectively slidably arranged on two adjacent steel arch frames. By sliding the pulley blocks, the casting template slides along the extension direction of the steel arch frames. Further, two impellers are provided, and the two impellers are respectively arranged above and below the feed hole.

[0010] Furthermore, two connecting plates are relatively arranged on one side of the casting template close to the tunnel surface, a rotating hole is formed on the connecting plate, a rotating shaft is formed on the impeller corresponding to the rotating hole, and the rotating shaft is rotatably arranged in the rotating hole.

[0011] Furthermore, a rotating gear is fixedly arranged outside the rotating shaft, and the rotating gears of the two impellers are meshed with each other.

[0012] Furthermore, a plurality of quick-setting agent inlet holes are formed on the casting template, and the plurality of quick-setting agent inlet holes are arranged at intervals on both sides of the feed hole.

[0013] Furthermore, the pulley block comprises:

[0014] A limit block fixed to the side of the casting template, wherein a movable groove is formed on a side of the limit block close to the steel arch frame;

[0015] a mounting block slidably mounted on the movable groove, wherein a running wheel is disposed on a side of the mounting block close to the steel arch frame, and the running wheel is slidably mounted on the steel arch frame; and

[0016] An adjusting spring is connected between the limiting block and the mounting block.

[0017] Furthermore, an adjustment groove is formed on the surface of the limit block, the adjustment groove is communicated with the movable groove, and the mounting block is formed with an adjustment shaft corresponding to the adjustment groove, and the adjustment shaft is slidably disposed in the adjustment groove.

[0018] Furthermore, the fixing block is formed with a fixing shaft corresponding to the adjusting spring, and the end of the adjusting spring is fixed to the fixing shaft.

[0019] Furthermore, an adjustment hole is formed on the adjustment panel, and a positioning hole is formed on the limit block corresponding to the adjustment hole. The limit block is fixedly connected by passing a bolt through the sliding hole and the positioning hole, and the end of the adjustment spring is fixed to the bolt.

[0020] Furthermore, a plurality of the adjustment holes are provided, and a plurality of the positioning holes are provided corresponding to the plurality of the adjustment holes.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] A feed hole is formed on the casting template to facilitate construction workers to cast between the casting template and the tunnel through the feed hole. After the casting is completed, the casting template is moved to the next casting position by sliding along the steel arch frame through the pulley block. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a sliding form structure for tunnel support;

[0024] Figure 2 A rear view of a slipform structure for tunnel support;

[0025] Figure 3 It is a structural schematic diagram of a pulley block of a sliding form structure for tunnel support;

[0026] Figure 4 A schematic diagram of the structure of an impeller of a sliding form structure for tunnel support;

[0027] Figure 5 It is a structural schematic diagram of a casting formwork of a slipform structure of tunnel support;

[0028] Legend: 1. Steel arch; 2. Casting formwork; 21. Accelerator inlet hole; 3. Feed hole; 4. Pulley block; 41. Travel wheel; 42. Mounting block; 43. Limit block; 44. Adjusting shaft; 45. Adjusting spring; 5. Bolt; 6. Adjusting hole; 7. Impeller; 71. Rotating gear; 72. Connecting plate. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] See also Figure 1 , a slipform structure for tunnel support, wherein a plurality of steel arch frames 1 are arranged at intervals in the tunnel, and the slipform structure comprises: a casting template 2, a feed hole 3, an impeller 7 and a pulley block 4; the casting template 2 is arranged on the side of the wall of two adjacent steel arch frames 1 away from the tunnel; the feed hole 3 is formed in the casting template 2; the impeller 7 is rotatably arranged on the side of the casting template 2 close to the surface of the tunnel and corresponding to the position of the feed hole 3; and two pulley blocks 4 are arranged on the side of the casting template 2 and are arranged opposite to each other, the pulley block 4 is arranged above the impeller 7, and the two sliding wheels are respectively slidably arranged on the two adjacent steel arch frames 1, and the casting template 2 slides along the extension direction of the steel arch frame 1 by sliding the pulley block 4.

[0031] In the present invention, a preferred embodiment is: the casting template 2 is set between the two steel arch frames 1, and the two pulley blocks 4 are respectively placed on the two opposite sides of the two oppositely set steel arch frames 1. Preferably, the pulley block 4 and the impeller 7 are driven by a motor to move the casting template 2 to the position to be cast, and the casting template 2 is cast through the feed hole 3. During the casting process, the impeller 7 keeps rotating continuously, thereby ensuring that the concrete is evenly and densely distributed, accurately controlling the flow rate, laying speed and direction of the concrete, and ensuring the construction precision. The degree and quality of the concrete can be effectively reduced, the waste of concrete can be reduced, the construction cost can be reduced, the pulley block 4 can be started to drive the casting template 2 to move to the next construction area, preferably, in order to ensure the progress of the construction, a quick-setting agent is mixed in the concrete, and after the concrete pouring is completed, the concrete in the casting template 2 has a certain strength, and moving the impeller 7 and the casting template 2 will not cause damage to the poured part. After the pouring is completed, the casting template 2 can be slid up, and the support plate can be supported in the area where the casting template 2 is poured, so as to reinforce the concrete in the area.

[0032] Furthermore, the pulley block 4 can be added and arranged below the impeller 7 to increase the stability of the movement of the casting template 2.

[0033] Furthermore, a protruding section is formed on the top of the casting template 2, and the protruding section is located above the impeller 7, and the pulley block 4 is arranged on the protruding section.

[0034] Furthermore, two impellers 7 are provided, and the two impellers 7 are respectively provided above and below the feed hole 3. During the pouring process, the two staggered rotating impellers 7 ensure that the concrete is evenly distributed and dense, and the flow rate, laying speed and direction of the concrete are accurately controlled to ensure the construction accuracy and quality, which can effectively reduce the waste of concrete and reduce the construction cost.

[0035] Furthermore, two connecting plates 72 are relatively arranged on one side of the casting template 2 close to the tunnel surface, and a rotating hole is formed on the connecting plate 72. The impeller 7 has a rotating shaft corresponding to the rotating hole, and the rotating shaft is rotatably arranged in the rotating hole.

[0036] Furthermore, a rotating gear 71 is fixedly arranged outside the rotating shaft, and the rotating gears 71 of the two impellers 7 are meshed with each other. Through the rotating gear 71, when one impeller 7 is driven to rotate, the other impeller 7 can also rotate.

[0037] Furthermore, the impeller includes: a rotating shaft, both ends of which are arranged in the rotating hole of the connecting plate and blades spirally arranged along the extension direction of the rotating shaft, and the blades of the two impellers are staggered to facilitate the flow control of the poured concrete.

[0038] Furthermore, a plurality of accelerating agent inlet holes 21 are formed on the casting template 2, and the plurality of accelerating agent inlet holes 21 are arranged at intervals on both sides of the feeding hole 3. Accelerating agent is added to the poured concrete through the accelerating agent inlet holes 21, thereby accelerating the solidification of the concrete.

[0039] Further, the pulley block 4 includes: a limit block 43 fixed to the side of the casting template 2, the limit block 43 is formed with a movable groove on the side close to the steel arch frame 1; a mounting block 42 slidably arranged in the movable groove, the mounting block 42 is provided with a walking wheel 41 on the side close to the steel arch frame 1, and the walking wheel 41 is slidably arranged on the steel arch frame 1; and an adjustment spring 45 connected between the limit block 43 and the mounting block 42. When in use, the mounting block 42 can be slid toward the direction of the limit block 43, the adjustment spring 45 is compressed, and the spacing between the two pulley blocks 4 is made smaller than the spacing between the two adjacent steel arch frames 1. After the two pulley blocks 4 are moved to the two steel arch frames 1, the limit of the pulley block 4 is released, the adjustment spring 45 is reset, and the walking wheel 41 is stuck on the surface of the steel arch frame 1. The walking wheel 41 is driven by a motor to achieve rotation and braking.

[0040] Furthermore, a protrusion is formed on the steel arch frame 1, and a groove is formed on the walking wheel 41 corresponding to the protrusion, and the groove is clamped on the outer side of the protrusion.

[0041] Furthermore, an adjustment groove is formed on the surface of the limit block 43, the adjustment groove is connected to the movable groove, and the mounting block 42 is formed with an adjustment shaft 44 corresponding to the adjustment groove, and the adjustment shaft 44 is slidably disposed in the adjustment groove. Through the adjustment groove, the mounting block 42 can be smoothly slid in the limit block 43.

[0042] Furthermore, the fixing block is formed with a fixing shaft corresponding to the adjusting spring 45 , and an end of the adjusting spring 45 is fixed to the fixing shaft.

[0043] Furthermore, an adjustment hole 6 is formed on the adjustment panel, and a positioning hole is formed on the limit block 43 corresponding to the adjustment hole 6. The limit block 43 is fixedly connected by passing a bolt 5 through the sliding hole and the positioning hole, and the end of the adjustment spring 45 is fixed to the bolt 5. When in use, the position of the bolt 5 in the adjustment hole 6 can be statically adjusted to facilitate the adjustment of the position of the pulley block 4.

[0044] Furthermore, a plurality of the adjusting holes 6 are provided, and a plurality of the positioning holes are provided corresponding to the plurality of the adjusting holes 6 .

[0045] The following is an explanation of the use process of a sliding form structure for tunnel support according to the present invention.

[0046] The casting template 2 is set between the two steel arch frames 1, and the two pulley blocks 4 are respectively placed on the two opposite sides of the two oppositely set steel arch frames 1. Preferably, the pulley block 4 and the impeller 7 are driven by a motor to move the casting template 2 to the position to be cast, and the casting template is cast through the feed hole 3. During the casting process, the impeller 7 keeps rotating continuously, thereby ensuring that the concrete is evenly and densely distributed, accurately controlling the flow rate, laying speed and direction of the concrete, ensuring the construction accuracy and quality, and being able to have Effectively reduce the waste of concrete and reduce construction costs. Start the pulley group 4 to drive the casting template to move to the next construction area. Preferably, in order to ensure the progress of construction, a quick-setting agent is mixed in the concrete. After the concrete pouring is completed, the concrete in the casting template 2 has a certain strength. Moving the impeller 7 and the casting template 2 will not cause damage to the cast part. After the pouring is completed, the casting template 2 can be slid up and the support plate can be supported in the area where the casting template 2 is cast, thereby reinforcing the concrete in the area.

[0047] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A sliding form structure for tunnel support, wherein a plurality of steel arches are arranged at intervals in the tunnel, wherein: The sliding mode structure comprises: A casting template arranged on a side of two adjacent steel arches away from the wall of the tunnel; a feed hole formed in the casting template; an impeller rotatably arranged on a surface side of the casting template close to the tunnel and corresponding to the position of the feed hole, wherein the impeller is spiral-shaped; and Two pulley groups are arranged on the sides of the casting template and are arranged opposite to each other. The pulley groups are arranged above the impeller. The two sliding wheels are respectively slidably arranged on two adjacent steel arch frames. By sliding the pulley groups, the casting template can slide along the extension direction of the steel arch frames.

2. The sliding form structure for tunnel support according to claim 1 is characterized in that: The impellers are provided with two impellers, and the two impellers are respectively arranged above and below the feed hole.

3. The sliding form structure for tunnel support according to claim 2 is characterized in that: Two connecting plates are arranged opposite to each other on one side of the casting template close to the tunnel surface. Rotating holes are formed on the connecting plates. A rotating shaft is formed on the impeller corresponding to the rotating hole. The rotating shaft is rotatably arranged in the rotating hole.

4. The sliding form structure for tunnel support according to claim 3 is characterized in that: A rotating gear is fixedly arranged outside the rotating shaft, and the rotating gears of the two impellers are meshed with each other.

5. The sliding form structure for tunnel support according to claim 1 is characterized in that: A plurality of quick-setting agent inlet holes are formed on the casting template, and the plurality of quick-setting agent inlet holes are arranged at intervals on both sides of the feed hole.

6. The sliding form structure for tunnel support according to claim 1, characterized in that: The pulley block comprises: A limit block fixed to the side of the casting template, wherein a movable groove is formed on a side of the limit block close to the steel arch frame; a mounting block slidably mounted on the movable groove, wherein a running wheel is disposed on a side of the mounting block close to the steel arch frame, and the running wheel is slidably mounted on the steel arch frame; and An adjusting spring is connected between the limiting block and the mounting block.

7. The sliding form structure for tunnel support according to claim 6 is characterized in that: An adjusting groove is formed on the surface of the limiting block, the adjusting groove is communicated with the movable groove, and an adjusting shaft is formed on the mounting block corresponding to the adjusting groove, and the adjusting shaft is slidably disposed in the adjusting groove.

8. The sliding form structure for tunnel support according to claim 6, characterized in that: The fixing block is formed with a fixing shaft corresponding to the adjusting spring, and an end of the adjusting spring is fixed to the fixing shaft.

9. The sliding form structure for tunnel support according to claim 6, characterized in that: An adjustment hole is formed on the adjustment panel, and a positioning hole is formed on the limit block corresponding to the adjustment hole. The limit block is fixedly connected by passing a bolt through the sliding hole and the positioning hole, and the end of the adjustment spring is fixed to the bolt.

10. The sliding form structure for tunnel support according to claim 9, characterized in that: There are a plurality of adjustment holes, and a plurality of positioning holes are provided corresponding to the plurality of adjustment holes.

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