Telescopic inverted arch plugging template

Abstract

The utility model discloses a telescopic inverted arch blocking template which comprises an upper template, a water stop belt, a filling layer template and a plurality of lower templates which are sequentially spliced in the width direction of an inverted arch, the upper template is connected with the filling layer template, and a first supporting mechanism used for supporting the lower templates is arranged on the upper template. The lower mold plate comprises a fixed mold plate, a lifting driving part and a lifting mold plate, the water stop belt is clamped between the upper mold plate and the fixed mold plate, the lifting mold plate is in lap joint with the fixed mold plate, and the lifting driving part is arranged on the fixed mold plate and connected with the lifting mold plate. According to the telescopic inverted arch plugging template disclosed by the utility model, the requirements of different concrete protection layer pouring thicknesses can be met by adjusting the height of each lower template; the lower template located at the over-excavation or under-excavation position can drive the lifting template to ascend and descend through the lifting driving piece so that the lifting template can be tightly attached to the bottom wall of the tunnel, and therefore the blocking effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction formwork technology, and in particular to a retractable arch sealing formwork. Background Technology

[0002] During tunnel construction, after the tunnel body is excavated and initial support is provided, a concrete protective layer needs to be poured into the tunnel invert. Steel formwork is commonly used in invert construction. The invert formwork needs to be closed with filling and sealing formwork at its front end. Traditional tunnel construction often uses wooden and steel formwork to seal the concrete, but both have limitations. Wooden formwork is cheaper and easier to install and transport, but its lifespan is short, making it difficult to reuse multiple times, resulting in low turnover. This not only easily leads to material waste but may also cause environmental problems. Furthermore, when using wooden formwork to seal concrete, to ensure a tight fit between the formwork and the waterproofing membrane or waterstop, it is usually necessary to forcefully pack the formwork into the waterproofing membrane or waterstop. This operation can easily damage the waterproofing membrane or waterstop, thus affecting the tunnel's waterproofing effect. Steel formwork has a higher turnover rate and a relatively better fit with the waterproofing membrane or waterstop. However, regardless of whether steel or wooden formwork is used, if… Figure 1 As shown, most existing sealing template designs are only applicable to invert construction with a single concrete protective layer thickness, which is not very applicable. When over-excavation or under-excavation occurs at the bottom of the invert, the template cannot be effectively adjusted, thus failing to guarantee the sealing effect and affecting construction efficiency and quality. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a retractable arch sealing template that can adapt to different concrete protective layer pouring thicknesses and can ensure the sealing effect in the case of over-excavation and under-excavation at the bottom of the arch.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A retractable arch sealing template includes an upper template, a waterstop, a filling layer template, and multiple lower templates sequentially spliced ​​along the width direction of the arch. The upper template is connected to the filling layer template. The upper template is provided with a first support mechanism for supporting the lower templates. The lower template includes a fixed template, a lifting drive component, and a lifting template. The waterstop is sandwiched between the upper template and the fixed template. The lifting template overlaps with the fixed template. The lifting drive component is located on the fixed template and connected to the lifting template.

[0006] As a further improvement to the above technical solution: a guide component is provided between the fixed template and the lifting template.

[0007] As a further improvement to the above technical solution: the guide assembly includes a guide sleeve disposed on the fixed template and a guide rod disposed on the lifting template, the guide sleeve being sleeved around the guide rod.

[0008] As a further improvement to the above technical solution: the guide components are provided on both sides of the lifting template.

[0009] As a further improvement to the above technical solution: the lifting drive component is provided on both sides of the fixed template, and the lifting drive component is a lifting screw.

[0010] As a further improvement to the above technical solution: a locking device is provided between the fixed template and the lifting template.

[0011] As a further improvement to the above technical solution: the first support mechanism includes a plurality of support components arranged along the width direction of the upper template, the plurality of support components being used to support a plurality of lower templates in a one-to-one correspondence, the support component including a mounting seat on the upper template, a support rod on the mounting seat, and a wedge block engaged between the support rod and the lower template.

[0012] As a further improvement to the above technical solution: the upper template is hinged to the filling layer template.

[0013] As a further improvement to the above technical solution: a second support mechanism is provided on the filling layer template.

[0014] As a further improvement to the above technical solution: the second support mechanism is provided in multiple ways along the width direction of the filling layer template. The second support mechanism includes a hinge seat and a telescopic adjustment rod. The hinge seat is provided on the filling layer template, and one end of the telescopic adjustment rod is hinged to the hinge seat.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] This utility model discloses a retractable arch sealing template. The lower template includes a fixed template, a lifting drive, and a lifting template. The lifting template overlaps with the fixed template. The lifting drive can drive the lifting template to rise and fall, adjusting the length of the lifting template extending beyond the fixed template, thereby changing the height of the lower template. According to actual construction needs, the height of each lower template can be adjusted to meet the requirements of different concrete protective layer pouring thicknesses. When the tunnel body is over-excavated or under-excavated, the lower template located at the over-excavated or under-excavated position can be driven to rise and fall by the lifting drive, so that the lifting template is tightly attached to the tunnel bottom wall, thereby improving the sealing effect. The first support mechanism set on the upper template allows the upper and lower templates to work together to bear the force during concrete pouring, which helps to avoid misalignment of the upper and lower templates during concrete pouring, thereby further improving the sealing effect. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the existing inverted arch sealing template.

[0018] Figure 2 This is a side view of the retractable arch sealing template of this utility model.

[0019] Figure 3 This is a schematic diagram of the layout structure of the retractable arch sealing template of this utility model.

[0020] Figure 4 This is a schematic diagram of the first main view structure of the lower template of the retractable arch sealing template of this utility model.

[0021] Figure 5 This is a schematic diagram of the second main view structure of the lower template of the retractable arch sealing template of this utility model.

[0022] Figure 6 This is a side view of the lower template of the retractable arch sealing template of this utility model.

[0023] The labels in the diagram represent: 1. Upper template; 11. Connecting rod; 12. Upper template unit; 2. Waterstop; 3. Lower template; 31. Fixed template; 32. Lifting drive component; 33. Lifting template; 34. Guide assembly; 341. Guide sleeve; 342. Guide rod; 35. Locking component; 4. Filling layer template; 41. Hinge; 42. Filling layer template unit; 5. First support mechanism; 51. Support assembly; 511. Mounting seat; 512. Support rod; 513. Wedge block; 514. Mounting plate; 515. Mounting sleeve; 6. Second support mechanism; 61. Hinge seat; 62. Telescopic adjustment rod. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Figures 2 to 6 This invention illustrates an embodiment of the retractable invert arch sealing template. The retractable invert arch sealing template of this embodiment includes an upper template 1, a waterstop 2, a filling layer template 4, and multiple lower templates 3 sequentially spliced ​​along the width direction of the invert arch. The upper template 1 is connected to the filling layer template 4. The upper template 1 is provided with a first support mechanism 5 for supporting the lower templates 3. The lower template 3 includes a fixed template 31, a lifting drive component 32, and a lifting template 33. The waterstop 2 is sandwiched between the upper template 1 and the fixed template 31. The lifting template 33 overlaps with the fixed template 31. The lifting drive component 32 is provided on the fixed template 31 and connected to the lifting template 33.

[0028] The retractable arch sealing template includes a lower template 3 comprising a fixed template 31, a lifting drive 32, and a lifting template 33. The lifting template 3 overlaps with the fixed template 31. The lifting drive 32 can drive the lifting template 33 to rise and fall, adjusting the length of the lifting template 33 extending beyond the fixed template 31, thereby changing the height of the lower template 3. According to actual construction needs, the height of each lower template 3 can be adjusted to meet the requirements of different concrete protective layer pouring thicknesses. During use, when the tunnel body is over-excavated or under-excavated, the lower template 3 located at the over-excavated or under-excavated position can be driven by the lifting drive 32 to rise and fall, making the lifting template 33 fit tightly against the tunnel bottom wall, thereby improving the sealing effect. The first support mechanism 5 set on the upper template 1 allows the upper template 1 and the lower template 3 to work together to bear the force during concrete pouring, which helps to avoid misalignment of the upper template 1 and the lower template 3 during concrete pouring, thereby further improving the sealing effect.

[0029] Further, see Figure 4 and Figure 5 In this embodiment, a guide component 34 is provided between the fixed template 31 and the lifting template 33. This can improve the accuracy of the lifting template 33's lifting and lowering, and help avoid deviation of the lifting template 33 during the lifting and lowering process, which would affect the normal operation of adjacent lifting templates 33.

[0030] Further, see Figure 4 and Figure 5 In this embodiment, the guide assembly 34 includes a guide sleeve 341 disposed on the fixed template 31 and a guide rod 342 disposed on the lifting template 33. The guide sleeve 341 is sleeved on the outer periphery of the guide rod 342. The guide sleeve 341 and the guide rod 342 have a simple structure and are reliable in use.

[0031] Further, see Figure 4 and Figure 5 In this embodiment, guide components 34 are provided on both sides of the lifting template 33, which further improves the accuracy of the lifting template 33.

[0032] Further, see Figure 4 and Figure 5 In this embodiment, lifting drive components 32 are provided on both sides of the fixed template 31, which helps to ensure the reliability of lifting. The lifting drive component 32 is a lifting screw. Of course, in other embodiments, the lifting drive component 32 can also be a hydraulic cylinder, electric cylinder or pneumatic cylinder, etc., which will not be described in detail here.

[0033] Further, see Figure 4 and Figure 5 In this embodiment, a locking member 35 is provided between the fixed template 31 and the lifting template 33. Preferably, the locking member 35 is a locking bolt.

[0034] Further, see Figure 2In this embodiment, the first support mechanism 5 includes multiple support components 51 arranged along the width direction of the upper template 1. These support components 51 are used to support multiple lower templates 3 in a one-to-one correspondence. Each support component 51 includes a mounting base 511 on the upper template 1, a support rod 512 on the mounting base 511, and a wedge block 513 engaged between the support rod 512 and the lower template 3. The lower template 3 is located below the upper template 1 and bears greater pressure from the concrete. When the lower template 3 is subjected to concrete pressure, it transmits the pressure to the wedge block 513. The wedge block 513 then transmits the pressure to the upper template 1 through the support rod 512 and the mounting base 511, which helps to prevent relative movement between the lower template 3 and the upper template 1, resulting in good reliability. Preferably, the mounting base 511 includes two mounting plates 514 and mounting sleeves 515 disposed on the two mounting plates 514. A support rod 512 is inserted into the mounting sleeve 515. During demolding, the wedge block 513 is removed, and then the support rod 512 is removed from the mounting sleeve 515. This allows for separate demolding of the upper template 1 and the lower template 3, facilitating separate transportation of the upper template 1 and the lower template 3. It should be noted that the width direction of the upper template 1 is... Figures 3 to 5 The left and right directions of the arch, i.e., the width direction of the inverted arch.

[0035] Further, see Figure 2 In this embodiment, the upper template 1 and the filling layer template 4 are hinged. Specifically, the filling layer template 4 is provided with a protruding hinge portion 41, and the hinge portion 41 is provided with a first hinge hole. The upper template 1 is provided with a connecting rod 11, the upper end of the connecting rod 11 extends out of the upper template 1, and the upper end of the connecting rod 11 is provided with a second hinge hole. The upper template 1 and the filling layer template 4 are hinged by a pin passing through the first hinge hole and the second hinge hole. After the pin is removed, the upper template 1 and the filling layer template 4 can be separated for demolding and transportation, which is convenient for transportation.

[0036] Further, see Figure 2 In this embodiment, the filling layer template 4 is provided with a second support mechanism 6. The second support mechanism 6 can support the upper template 1 and the lower template 3 by supporting the filling layer template 4, which helps to prevent the filling layer template 4, the upper template 1 and the lower template 3 from overturning during the pouring process, and has good reliability.

[0037] Further, see Figure 2In this embodiment, multiple second support mechanisms 6 are spaced apart along the width direction of the filling layer template 4. Each second support mechanism 6 includes a hinge seat 61 and a telescopic adjustment rod 62. The hinge seat 61 is mounted on the filling layer template 4, and one end of the telescopic adjustment rod 62 is hinged to the hinge seat 61. The hinge seat 61 has a third hinge hole, and the telescopic adjustment rod 62 has a fourth hinge hole. The telescopic adjustment rod 62 and the hinge seat 61 are hinged together by a pin passing through the third and fourth hinge holes. The telescopic adjustment rod 62 can adjust the angle of support for the filling layer template 4 by rotation. Through extension and retraction, the telescopic adjustment rod 62 can always be supported on the ground, providing good adaptability. Furthermore, after removing the pin, the telescopic adjustment rod 62 can be detached from the hinge seat 61, allowing for separate transport of the telescopic adjustment rod 62 and the filling layer template 4. In this embodiment, the telescopic adjustment rod 62 is a lead screw; however, in other embodiments, hydraulic telescopic rods, electric telescopic rods, etc., can also be used, which will not be elaborated further. It should be noted that the width direction of the filling layer template 4 is... Figures 3 to 5 The left and right directions in the middle, that is, the direction of the width of the inverted arch.

[0038] Further, see Figure 3 In this embodiment, the upper template 1 includes multiple upper template units 12 that are spliced ​​together in sequence, and the filling layer template 4 includes multiple filling layer template units 42 that are spliced ​​together in sequence. The upper template unit 12 is hinged to the corresponding filling layer template unit 42. The support component 51 is provided on the corresponding upper template unit 12. Each filling layer template unit 42 is provided with a second support mechanism 6. The upper template 1 and the filling layer template 4 can be disassembled for transportation, which further improves the convenience of transportation.

[0039] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A telescoping invert form, characterized by: The system includes an upper template (1), a waterstop (2), a filling layer template (4), and multiple lower templates (3) that are sequentially spliced ​​along the width of the arch. The upper template (1) is connected to the filling layer template (4). The upper template (1) is provided with a first support mechanism (5) for supporting the lower template (3). The lower template (3) includes a fixed template (31), a lifting drive component (32), and a lifting template (33). The waterstop (2) is sandwiched between the upper template (1) and the fixed template (31). The lifting template (33) overlaps with the fixed template (31). The lifting drive component (32) is located on the fixed template (31) and connected to the lifting template (33).

2. The retractable invert plug form of claim 1, wherein: A guide assembly (34) is provided between the fixed template (31) and the lifting template (33).

3. The retractable invert plug form of claim 2, wherein: The guide assembly (34) includes a guide sleeve (341) disposed on the fixed template (31) and a guide rod (342) disposed on the lifting template (33), wherein the guide sleeve (341) is sleeved on the outer periphery of the guide rod (342).

4. The retractable invert plug form of claim 2, wherein: The guide components (34) are provided on both sides of the lifting template (33).

5. The retractable invert plug form of claim 1, wherein: The fixed template (31) is provided with lifting drive components (32) on both sides, and the lifting drive components (32) are lifting screws.

6. The telescoping invert plug form of claim 1, wherein: A locking element (35) is provided between the fixed template (31) and the lifting template (33).

7. The retractable invert plug form of any one of claims 1 to 6, wherein: The first support mechanism (5) includes a plurality of support components (51) arranged along the width direction of the upper template (1). The plurality of support components (51) are used to support the plurality of lower templates (3) in a one-to-one correspondence. The support component (51) includes a mounting seat (511) provided on the upper template (1), a support rod (512) provided on the mounting seat (511), and a wedge block (513) locked between the support rod (512) and the lower template (3).

8. The retractable invert plug form of any one of claims 1 to 6, wherein: The upper template (1) is hinged to the filling layer template (4).

9. The retractable invert plug form of any one of claims 1 to 6, wherein: The filling layer template (4) is provided with a second support mechanism (6).

10. The telescopic inverted T-block formwork according to claim 9, wherein: The second support mechanism (6) is provided in multiple spaces along the width direction of the filling layer template (4). The second support mechanism (6) includes a hinge seat (61) and a telescopic adjustment rod (62). The hinge seat (61) is provided on the filling layer template (4), and one end of the telescopic adjustment rod (62) is hinged to the hinge seat (61).

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