Hanging formwork for pouring trapezoidal prefabricated slab ballast bed

Abstract

The utility model discloses a hanging formwork for pouring a trapezoidal precast slab ballast bed, which comprises side formworks and a hanging bracket, the bottom of the hanging bracket is connected with the tops of the two side formworks which are oppositely arranged along the length direction, the hanging bracket comprises a horizontal limiting rod, a vertical limiting piece and a connecting part, the top of the connecting part is connected with the bottom of the horizontal limiting rod, and the vertical limiting piece is connected with the bottom of the horizontal limiting rod. The connecting parts are symmetrical along the central axis of the horizontal limiting rod, vertical limiting pieces are arranged on the left side and the right side of each connecting part, the two vertical limiting pieces are symmetrically arranged at the bottom of the horizontal limiting rod, the sides, away from the connecting parts, of the vertical limiting pieces of the horizontal limiting rod are first limiting faces, and the sides, away from the connecting parts, of the vertical limiting pieces are second limiting faces. The first limiting face is perpendicular to the second limiting face so that the rail pillow body can be clamped conveniently. The side formwork and the hanging bracket are arranged, the side formwork is supported and fixed through the hanging bracket, the side formwork is prevented from deviating in the pouring process, the operation requirement for constructors is lowered, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of subway construction, in particular to a hanging formwork for pouring a trapezoidal prefabricated slab roadbed. Background Art

[0002] In the construction of the trapezoidal precast slab roadbed for urban rail underground lines, the general process is to first set up the steel frame of the roadbed in the underground line, then hoist and erect the trapezoidal precast slabs on top of the steel frame, then arrange the formwork, and finally cast the roadbed; Figure 1 As shown, the cross-sectional structure of the trapezoidal precast slab track bed in the underground line is shown. The track bed 200 has a drainage ditch 210 located in the center of the trapezoidal precast slab 100. In order to form the drainage ditch 210, two wooden formworks are arranged on the steel frame. If the positioning is inaccurate, the position of the drainage ditch will deviate from the design center, affecting the drainage effect and even posing a threat to the stability and safety of the track structure. Therefore, the wooden formwork needs to be effectively supported and fixed on the steel frame to ensure that it will not shift or deform during concrete pouring. However, the existing formwork fixing stability is insufficient, resulting in the formwork being offset or collapsed during the pouring process, thereby affecting the shape and size of the drainage ditch. In actual construction, the positioning and support of the formwork often need to be carried out simultaneously. Due to the complexity of the construction environment and the differences in the operating levels of the construction workers, the coordination of positioning and support cannot be effectively guaranteed, resulting in the formwork being unable to be effectively supported after positioning, or being offset after support. Therefore, it is necessary to design a formwork that can be supported and fixed at the same time. Utility Model Content

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and provide a hanging formwork for casting a trapezoidal precast slab roadbed, wherein a side formwork and a hanger are provided, and a horizontal limit rod of the hanger and the vertical limit members on the left and right sides form a first limit surface and a second limit surface, the two first limit surfaces are respectively tightly attached to the top surfaces of the opposite sleeper bodies, and the two second limit surfaces are respectively tightly pressed against the inner side walls of the opposite sleeper bodies, so that the side formwork is supported and fixed by the hanger, thereby avoiding deviation of the side formwork during the casting process, reducing the operating requirements for construction personnel, and improving construction efficiency.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a hanging formwork for casting a trapezoidal precast slab track bed, comprising a side formwork and a hanger, the bottom of the hanger is connected to the top of two side formworks arranged opposite to each other along the length direction, the hanger comprises a horizontal limit rod, a vertical limit piece and a connecting part, the top of the connecting part is connected to the bottom of the horizontal limit rod, the connecting part is symmetrical along the central axis of the horizontal limit rod, vertical limit pieces are provided on the left and right sides of the connecting part, the two vertical limit pieces are symmetrically arranged at the bottom of the horizontal limit rod, the horizontal limit rod is located on the side of the vertical limit piece away from the connecting part as a first limit surface, the vertical limit piece is located on the side away from the connecting part as a second limit surface, the first limit surface is perpendicular to the second limit surface for easy connection with the sleeper body.

[0005] Preferably, the vertical limiting member is an L-shaped structure, the transverse end of the vertical limiting member is connected to the horizontal limiting rod, and the vertical end of the vertical limiting member is perpendicular to the horizontal limiting rod.

[0006] Preferably, the connecting part includes a connecting rod and a reinforcing rod, and the number of the connecting rod and the reinforcing rod are two. The distance between the two connecting rods is consistent with the distance between the two side templates. The top of the connecting rod is connected to the horizontal limiting rod, and the bottom of the connecting rod is connected to the side template. The two end portions of the reinforcing rod are respectively connected to the horizontal limiting rod and the connecting rod, and the reinforcing rod, the horizontal limiting rod and the connecting rod form a triangular support structure.

[0007] Preferably, the side formwork is provided with a plurality of hangers at intervals along the length direction.

[0008] Preferably, the horizontal limiting rod is provided with a plurality of threaded holes at equal intervals on the outside of the connecting portion along the length direction, and the lateral end of the vertical limiting piece is threadedly connected to the horizontal limiting rod to facilitate adjustment of the position of the vertical limiting piece.

[0009] Preferably, a rubber gasket is provided on a side of the vertical end of the vertical limiter away from the connecting rod.

[0010] Preferably, a template connecting portion is provided on the top of the side template, and the end of the connecting rod away from the horizontal limiting rod is connected to the template connecting portion.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. The utility model is provided with a side formwork and a hanger. The horizontal limit rod of the hanger and the vertical limit members on the left and right sides form a first limit surface and a second limit surface. The two first limit surfaces are respectively tightly attached to the top surfaces of the opposite sleeper bodies, and the two second limit surfaces are respectively tightly pressed against the inner side walls of the opposite sleeper bodies, so that the side formwork is supported and fixed by the hanger, avoiding the deviation of the side formwork during the pouring process, reducing the operation requirements for construction personnel, and improving construction efficiency.

[0013] 2. The utility model provides a template connection portion at the top of the side template, through which the side template and the hanger are detachably connected, thereby improving the applicability of the hanging template.

[0014] 3. The horizontal limit rod of the utility model is provided with multiple threaded holes at equal intervals, and the vertical limit piece is threadedly connected to the horizontal limit rod through the threaded holes, which facilitates the adjustment of the position of the vertical limit piece and improves the applicability of the hanging formwork.

[0015] The present invention will be described in further detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of a trapezoidal prefabricated slab roadbed in an underground line in the prior art;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 for Figure 2 A top view of

[0019] Figure 4 This is a schematic diagram of the first use case of the utility model;

[0020] Figure 5 This is a schematic diagram of the second usage of the utility model;

[0021] Figure 6 This is a side view of the utility model when installed;

[0022] Figure 7 It is a side view of the utility model after installation.

[0023] Description of the accompanying drawings:

[0024] 1—side formwork; 11—formwork connection; 100—trapezoidal precast panel;

[0025] 110—Sleeper body; 120—Transverse connecting rod; 2—Hanger;

[0026] 21—Horizontal limiting rod; 211—First limiting surface; 22—Vertical limiting member;

[0027] 221—Second limiting surface; 23—Connecting rod; 24—Reinforcement rod;

[0028] 200—track bed; 210—drainage ditch. DETAILED DESCRIPTION

[0029] like Figure 2 、 Figure 4 As shown, the utility model discloses a hanging formwork for casting a trapezoidal precast slab track bed, comprising a side formwork 1 and a hanger 2, the bottom of the hanger 2 is connected to the top of two side formworks 1 arranged opposite to each other along the length direction, the hanger 2 comprises a horizontal limit rod 21, a vertical limit piece 22 and a connecting portion, the top of the connecting portion is connected to the bottom of the horizontal limit rod 21, the connecting portion is symmetrical along the central axis of the horizontal limit rod 21, vertical limit pieces 22 are provided on the left and right sides of the connecting portion, and the two vertical limit pieces 22 are symmetrically arranged at the bottom of the horizontal limit rod 21, the horizontal limit rod 21 is located on the side of the vertical limit piece 22 away from the connecting portion as a first limit surface 211, the vertical limit piece 22 is away from the connecting portion on the side, and the first limit surface 211 is perpendicular to the second limit surface 221 for easy clamping of the sleeper body 110.

[0030] In this embodiment, the hanging formwork is hoisted between the two sleeper bodies 110, and the distance between the two vertical limit members 22 is consistent with the distance between the two sleeper bodies 110. After the hanging formwork is placed between the two sleeper bodies 110, the first limit surfaces 211 located on the left and right sides of the horizontal limit rod 21 are respectively tightly attached to the tops of the two opposite sleeper bodies 110, and the second limit surfaces 221 located on the left and right sides of the horizontal limit rod 21 are respectively tightly pressed against the inner side walls of the two opposite sleeper bodies 110, so that the hanger 2 is clamped on the two sleeper bodies 110, and the two sleeper bodies 110 position the center position and height position of the hanger 2, so as to realize the positioning of the center position and height position of the two side formworks 1, that is, the side formworks 1 are supported and fixed by the hanger 2, so as to avoid position displacement of the side formworks 1 during the pouring process, thereby reducing the operation requirements for construction personnel and effectively improving construction efficiency.

[0031] like Figure 5 As shown, the hanging formwork is also suitable for inclined roadbeds in curved sections, and is connected to the sleeper bodies 110 on both sides through horizontal limiting rods 21 and vertical limiting members 22, thereby achieving the positioning of the two side formworks 1.

[0032] In another possible embodiment, the vertical limit member 22 is a square plate, and the end of the vertical limit member 22 along the length direction is fixedly connected to the bottom of the horizontal limit rod 21, so that the vertical limit member 22 is perpendicular to the horizontal limit rod 21, and the distance between the two vertical limit members 22 is consistent with the distance between the two sleeper bodies 110, so that the vertical limit member 22 is pressed against the inner side wall of the sleeper body 110 to prevent the hanging mold from moving.

[0033] The vertical limiting member 22 is an L-shaped structure. The horizontal end of the vertical limiting member 22 is connected to the horizontal limiting rod 21 , and the vertical end of the vertical limiting member 22 is perpendicular to the horizontal limiting rod 21 .

[0034] In this embodiment, vertical limit members 22 are provided on the left and right sides of the horizontal limit rod 21 along the length direction. The two vertical limit members 22 are symmetrically arranged on the left and right sides of the central axis of the horizontal limit rod 21. The lateral end of each vertical limit member 22 is located between the vertical end of the vertical limit member 22 and the connecting part. The lateral end of the vertical limit member 22 is fastened to the horizontal limit rod 21 to fix the position of the vertical limit member 22. The vertical limit members 22 located on the left and right sides of the connecting part are respectively pressed against the inner side walls of the two facing sleeper bodies 110, so that the center lines of the two vertical limit members 22 coincide with the center lines of the two sleeper bodies 110, and the center lines of the two sleeper bodies 110 coincide with the center lines of the drainage ditch 210. Therefore, the center lines of the two vertical limit members 22 coincide with the center lines of the two side templates 1, avoiding lateral displacement of the side templates 1.

[0035] The connecting part includes a connecting rod 23 and a reinforcing rod 24. The number of the connecting rod 23 and the reinforcing rod 24 are both two. The distance between the two connecting rods 23 is consistent with the distance between the two side templates 1. The top of the connecting rod 23 is connected to the horizontal limit rod 21, and the bottom of the connecting rod 23 is connected to the side template 1. The two end portions of the reinforcing rod 24 are respectively connected to the horizontal limit rod 21 and the connecting rod 23. The reinforcing rod 24, the horizontal limit rod 21 and the connecting rod 23 form a triangular support structure.

[0036] In this embodiment, the two connecting rods 23 are symmetrically arranged on the left and right sides of the central axis of the horizontal limit rod 21. The two connecting rods 23 are located on the inner sides of the two facing vertical limit members 22. Each connecting rod 23 is perpendicular to the horizontal limit rod 21. The horizontal limit rod 21 is tightly attached to the top of the sleeper body 110, so that the height of the side formwork 1 located at the bottom of the connecting rod 23 is fixed, that is, the horizontal limit rod 21 and the connecting rod 23 form a support effect on the side formwork 1. The reinforcement rod 24 is arranged between the horizontal limit rod 21 and the connecting rod 23 to improve the support strength of the side formwork 1 and enhance the stability of the hanging formwork.

[0037] like Figure 3 As shown, the side formwork 1 is provided with a plurality of hangers 2 at intervals along the length direction.

[0038] In this embodiment, the number of hanging brackets 2 is two. The two hanging brackets 2 are arranged at intervals along the length direction of the side template 1. The two hanging brackets 2 are provided with a total of four vertical limit members 22, which form four-point positioning with the sleeper body 110, improving the stability of positioning. In order to enable the side template 1 to be successfully inserted under the lower side of the transverse connecting rod 120 between the opposite sleeper bodies 110, the length of the side template 1 is greater than the distance between the two transverse connecting rods 120, and the distance between the hanging bracket 2 near the insertion end of the side template 1 and the end of the side template 1 far from the insertion end is less than the distance between the two transverse connecting rods 120. As shown in Figure 6 、 Figure 7 , the distance between the hanging bracket 2 near the insertion end of the side template 1 and the end of the side template 1 far from the insertion end is d1, and the distance between the two transverse connecting rods 120 is d2. When d1 < d2, insert the end of the side template 1 far from the hanging bracket 2 under the lower side of the transverse connecting rod 120, and push the side template 1 forward until the end of the side template 1 far from the insertion end can be lowered to keep the side template 1 horizontal, then the side template 1 is successfully inserted under the lower side of the transverse connecting rod 120. According to the construction site conditions, three or four hanging brackets 2 can be provided on the side template 1 to improve the clamping strength of the side template 1.

[0039] [[ID=⑧]]A plurality of threaded holes are equidistantly provided on the outer side of the connecting portion along the length direction of the horizontal limiting rod 21. The transverse end of the vertical limiting member 22 is threadedly connected to the horizontal limiting rod 21 to facilitate adjusting the position of the vertical limiting member 22.

[0040] In this embodiment, a plurality of threaded holes are symmetrically provided on the left and right sides of the horizontal limiting rod 21, and the number of threaded holes on the left and right sides of the horizontal limiting rod 21 is the same. If the two vertical limiting members 22 move the same number of threaded holes in the direction of approaching or departing from the connecting portion synchronously, the distances from the two vertical limiting members 22 to the central axis of the horizontal limiting rod 21 are still the same. By synchronously moving the two vertical limiting members 22, the suspended formwork can be clamped between sleeper bodies 110 with different widths, improving the applicability of the suspended formwork.

[0041] In another possible embodiment, the horizontal limit rod 21 includes a first limit rod and a second limit rod, the number of the first limit rods is two, the two first limit rods have the same structure, the second limit rod is provided with a plurality of first threaded holes at equal intervals along the length direction, the two first limit rods are symmetrically arranged on the left and right sides of the central axis of the second limit rod, the two first limit rods are both located on the lower side of the second limit rod, the ends of the two first limit rods that are close to each other are provided with two second threaded holes, the second threaded holes have the same aperture as the first threaded holes, each first limit rod is threadedly connected to the second limit rod by a bolt, and the two The adjacent ends of the first limit rods are provided with connecting rods 23 and reinforcing rods 24. The bottom of the connecting rod 23 is connected to the side formwork 1. The bottom of each first limit rod is provided with a vertical limit piece 22. The vertical limit piece 22 is arranged on the side of the connecting rod 23 away from the reinforcing rod 24. The two first limit rods move the same number of threaded holes to the left and right along the length direction of the second limit rod, so that the hanging formwork can be clamped between two sleeper bodies 110 of different widths. The movement of the two first limit rods simultaneously adjusts the distance between the two facing side formworks 1, thereby improving the applicability of the hanging formwork.

[0042] A rubber gasket is provided on a side of the vertical end of the vertical limiting member 22 away from the connecting rod 23 .

[0043] A rubber gasket is provided on the side of the vertical limiter 22 close to the sleeper body 110 to improve the clamping strength between the vertical limiter 22 and the sleeper body 110, avoid longitudinal deviation of the side template 1, and prevent the side wall of the vertical limiter 22 from scratching the sleeper body 110.

[0044] A template connecting portion 11 is provided on the top of the side template 1 , and the end of the connecting rod 23 away from the horizontal limiting rod 21 is connected to the template connecting portion 11 .

[0045] In this embodiment, the template connection part 11 is an inverted L-shaped structure. The vertical end of the template connection part 11 is threadedly connected to the top of the side template 1 along the height direction, and the top of the horizontal end of the template connection part 11 is fixedly connected to the connecting rod 23. When inserting the side template 1, by adjusting the position of the template connection part 11, the side template 1 can be inserted into the lower side of the horizontal connecting rod 120 with different spacings. At the same time, the template connection part 11 can be adjusted to the inner side wall of two adjacent horizontal connecting rods 120 facing each other, so that the connecting rod 23 at the top of the template connection part 11 is tightly attached to the horizontal connecting rod 120, thereby avoiding the side template 1 from moving along the length direction and improving the stability of the side template 1.

[0046] When in use, multiple hanging molds are set end to end along the length direction of the sleeper body 110, and the positions of the various components in the hanger 2 are set according to the construction site conditions. The two vertical limit members 22 are symmetrically installed on the left and right sides of the bottom of the horizontal limit rod 21, so that the distance between the two vertical limit members 22 is consistent with the distance between the two facing sleeper bodies 110, so that the vertical limit members 22 and the sleeper body 110 are tightened; the connecting part is set between the two facing vertical limit members 22 so that the central axis of the connecting part coincides with the central axis of the two vertical limit members 22. After the hanger 2 is installed, the bottom of the hanger 2 is connected to the top of the side template 1 along the height direction. If multiple hangers 2 are installed along the length direction of the side formwork 1, the distance between the hanger 2 close to the insertion end of the side formwork 1 and the end of the side formwork 1 away from the insertion end should be less than the spacing between the two transverse connecting rods 120, so as to facilitate the lowering of the side formwork 1 to the lower side of the transverse connecting rod 120. After the side formwork 1 is lowered, the first limiting surfaces 211 at the left and right ends of the bottom of the horizontal limiting rod 21 are respectively tightly attached to the tops of the two opposite sleeper bodies 110, so as to facilitate limiting the height of the side formwork 1, and the second limiting surfaces 221 of the two vertical limiting members 22 are respectively pressed against the inner side walls of the two opposite sleeper bodies 110 to prevent the side formwork 1 from moving and improve construction efficiency.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural transformation made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A hanging formwork for casting a trapezoidal precast slab roadbed, characterized by: The invention comprises a side formwork (1) and a hanger (2), wherein the bottom of the hanger (2) is connected to the top of two side formworks (1) arranged opposite to each other along the length direction, and the hanger (2) comprises a horizontal limiting rod (21), a vertical limiting piece (22) and a connecting portion, wherein the top of the connecting portion is connected to the bottom of the horizontal limiting rod (21), and the connecting portion is symmetrical along the central axis of the horizontal limiting rod (21). Vertical limiting pieces (22) are provided on both sides of the connecting portion, and the two vertical limiting pieces (22) are symmetrically arranged at the bottom of the horizontal limiting rod (21). The side of the horizontal limiting rod (21) located at the vertical limiting piece (22) away from the connecting portion is a first limiting surface (211), and the side of the vertical limiting piece (22) away from the connecting portion is a second limiting surface (221), and the first limiting surface (211) and the second limiting surface (221) are perpendicular to each other to facilitate the clamping of the rail sleeper body (110).

2. A hanging formwork for casting a trapezoidal precast slab roadbed according to claim 1, characterized in that: The vertical limiting member (22) is an L-shaped structure, the horizontal end of the vertical limiting member (22) is connected to the horizontal limiting rod (21), and the vertical end of the vertical limiting member (22) is perpendicular to the horizontal limiting rod (21).

3. A hanging formwork for casting a trapezoidal precast slab roadbed according to claim 1, characterized in that: The connecting portion includes a connecting rod (23) and a reinforcing rod (24), the number of each of the connecting rod (23) and the reinforcing rod (24) is two, the distance between the two connecting rods (23) is consistent with the distance between the two side templates (1), the top of the connecting rod (23) is connected to the horizontal limiting rod (21), the bottom of the connecting rod (23) is connected to the side template (1), the two end portions of the reinforcing rod (24) are respectively connected to the horizontal limiting rod (21) and the connecting rod (23), and the reinforcing rod (24), the horizontal limiting rod (21) and the connecting rod (23) form a triangular support structure.

4. A hanging formwork for casting a trapezoidal precast slab roadbed according to claim 1, characterized in that: The side template (1) is provided with a plurality of hangers (2) at intervals along the length direction.

5. A hanging formwork for casting a trapezoidal precast slab roadbed according to claim 2, characterized in that: The horizontal limiting rod (21) is provided with a plurality of threaded holes at equal intervals on the outside of the connection portion along the length direction, and the transverse end of the vertical limiting member (22) is threadedly connected to the horizontal limiting rod (21) to facilitate adjustment of the position of the vertical limiting member (22).

6. A hanging formwork for casting a trapezoidal precast slab roadbed according to claim 2, characterized in that: A rubber gasket is provided on the side of the vertical end of the vertical limiting member (22) away from the connecting rod (23).

7. A hanging formwork for casting a trapezoidal precast slab roadbed according to claim 3, characterized in that: A template connection portion (11) is provided on the top of the side template (1), and the end of the connecting rod (23) away from the horizontal limiting rod (21) is connected to the template connection portion (11).

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