Ballastless track bed formwork support

Abstract

The utility model relates to the technical field of railway construction, in particular to a ballastless track bed formwork support which comprises channel steel, an adjusting lead screw and a track bed formwork, two tying columns are fixedly connected to the two sides of the channel steel, a connecting ring is fixedly connected to one end of the adjusting lead screw, a bent rod is inserted into the other end of the adjusting lead screw, the connecting ring is inserted into the tying columns, and the bent rod is inserted into the track bed formwork. According to the ballastless track bed formwork support, railway construction operation is simplified, the construction efficiency is improved, an original structure is protected to a certain degree, meanwhile, unnecessary waste of manpower and material resources in the construction process is effectively reduced, the construction cost is reduced, and the construction efficiency is improved. And the method has obvious economic benefits.

Description

Technical Field

[0001] This application relates to the technical field of railway construction, especially the formwork support for ballastless track beds. Background Art

[0002] In the existing construction of tunnel ballastless track beds, for the formwork reinforcement of the concrete track bed slab, stud implantation is used to fix the formwork. After the pouring of the track bed slab, many holes and residues of steel bar heads will remain on the surface of the tunnel invert. This affects the driving safety of bullet trains, and the later stage of completion acceptance cannot pass. The amount of defect rectification work is large and the treatment cost is relatively high. Therefore, a formwork support for ballastless track beds is needed. Content of the Utility Model

[0003] In view of the problems in the prior art that the formwork reinforcement of the concrete track bed slab in the tunnel ballastless track bed damages the original structure and there are quality defects resulting in residual holes, etc., a formwork support for ballastless track beds is proposed. The purpose of this application is to design a simple support fixing measure to meet the increasingly improving requirements of construction quality.

[0004] The above object of this application is achieved through the following technical solutions:

[0005] The formwork support for ballastless track beds includes channel steel, a support device, and formwork for the track bed on both sides. Two tie rods are fixedly connected to both sides of the channel steel. Two support devices are arranged between the channel steel and the formwork for the track bed on both sides. The support device includes an adjusting screw rod. One end of the adjusting screw rod is inserted with a connecting rod. The end of the connecting rod far from the adjusting screw rod is inserted with a connecting ring. The other end of the adjusting screw rod is inserted with a bent rod. The connecting ring is sleeved on the tie rod. The bent rod is inserted into the formwork for the track bed. A support nut is provided on the lower end surface of the insertion joint of the connecting ring and the tie rod. The support nut is threadedly connected to the tie rod.

[0006] By adopting the above technical solution, the formwork support for ballastless track beds is placed on the surface of the tunnel invert. During construction, the adjusting screw rod, the tie rod, and the formwork for the track bed are inserted and fixed, and the effect of supporting the formwork for the track bed on the vertical plane can be achieved without leaving holes on the surface of the tunnel invert, protecting the original structure of the invert surface and improving the construction quality.

[0007] Furthermore, two angle steels are fixedly connected to the channel steel. The two angle steels are respectively located at both ends of the channel steel along the length direction of the channel steel.

[0008] By adopting the above technical solution, by arranging angle steels at both ends of the channel steel, the stress area of the channel steel in the length direction can be increased, the pressure generated by the formwork for the track bed on both sides on the channel steel during the construction pouring process can be reduced, and the overall stability of the support is improved.

[0009] Furthermore, a support spring is arranged inside the connecting rod inserted into the adjusting screw rod.

[0010] By adopting the above technical solution, by arranging a support spring inside the adjusting screw rod, an elastic support is provided between the adjusting screw rod and the bolt post, improving the support effect of the bracket on the track bed formwork and helping to reduce the risk of deformation and damage to the adjusting screw rod structure during use.

[0011] Furthermore, a positioning nut is provided on the upper end face of the insertion joint between the connecting ring and the bolt post, and the positioning adjusting nut is threadedly connected to the bolt post.

[0012] By adopting the above technical solution, by providing a positioning nut, the adjusting screw rod can be positioned at a specific position in the axial direction of the bolt post, playing a role in stabilizing the adjusting screw rod.

[0013] Furthermore, a baffle is fixedly arranged on the side surface of the track bed formwork, and a plurality of positioning holes for inserting the bent rod are provided on the baffle.

[0014] By adopting the above technical solution, through the positioning holes provided on the side surface of the track bed formwork, the adjusting screw rod can be positioned and adjusted in the vertical direction. In different states during the construction pouring process, the adjusting screw rod can flexibly achieve different support effects on one side of the track bed formwork according to the specific construction conditions.

[0015] Furthermore, the inner diameter of the inner ring of the connecting ring is larger than the diameter of the bolt post, and gaskets are provided between the connecting ring, the support nut and the positioning nut, and the gaskets are inserted on the bolt post.

[0016] By adopting the above technical solution, by increasing the inner diameter of the inner ring of the connecting ring, the adjusting screw rod can be adjusted more flexibly in terms of the insertion angle and direction with the bolt post, facilitating fine adjustment and positioning of the adjusting screw rod, enabling the construction personnel to position the adjusting screw rod more accurately and improving the overall adjustability of the bracket.

[0017] Furthermore, the track bed formwork and the channel steel are made of the same material, which is high-strength carbon structural steel.

[0018] By adopting the above technical solution, the track bed formwork and the channel steel can withstand the same impact and vibration intensity, improving the load of the overall structure and further enhancing the stability of the structure.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. By arranging the ballastless track bed formwork bracket, there is no need to leave holes on the surface of the tunnel invert during the construction pouring process, protecting the original structure, improving the construction quality. By arranging the angle steel, the stress area of the channel steel is increased, the pressure of the track bed formwork on the channel steel during the pouring process is reduced, and the stability of the bracket is enhanced;

[0021] 2. The design of the positioning nut and the positioning hole enables the adjusting screw rod to be positioned flexibly and adjust the supporting effect, adapting to different construction states. The increase in the inner diameter of the connecting ring improves the adjustability of the bracket, making the insertion of the screw rod and the bolt column more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure in the embodiment;

[0023] Figure 2 is a top view schematic diagram of the overall structure in the embodiment;

[0024] Figure 3 is along Figure 2 sectional view taken along line A-A in;

[0025] Figure 4 is Figure 3 partial enlarged view of A in.

[0026] Reference numerals: 1, channel steel; 10, bolt column; 2, adjusting screw rod; 20, connecting ring; 21, bent rod; 22, support spring; 23, shock-absorbing spring; 24, connecting rod; 3, track bed formwork; 30, positioning hole; 4, support nut; 5, angle steel; 6, positioning nut; 7, gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] Embodiment, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4, A support for the ballastless track bed formwork 3, comprising a channel steel 1, a support device, and the track bed formwork 3 on both sides. Two tie rods 10 are fixedly connected to both sides of the channel steel 1. Two support devices are arranged between the channel steel 1 and the track bed formwork 3 on both sides. The support device includes an adjusting screw rod 2. One end of the adjusting screw rod 2 is inserted with a connecting rod 24. The end of the connecting rod 24 away from the adjusting screw rod 2 is fixedly provided with a connecting ring 20. The other end of the adjusting screw rod 2 is inserted with a bent rod 21. The connecting ring 20 is inserted with the tie rod 10, and the bent rod 21 is inserted with the track bed formwork 3. A support nut 4 is provided on the lower end surface of the insertion part of the adjusting screw rod 2 and the tie rod 10. The support nut 4 is threadedly connected to the tie rod 10. Two angle steels 5 are fixedly connected to the channel steel 1. The two angle steels 5 are located at both ends of the channel steel 1 along the length direction of the channel steel 1. A support spring 22 is arranged inside the adjusting screw rod 2. The support spring 22 is inserted on the shaft side of the adjusting screw rod 2 and close to one end of the connecting ring 20. A shock-absorbing spring 23 is also arranged inside the adjusting screw rod 2. The shock-absorbing spring 23 is inserted on the shaft side of the adjusting screw rod 2 and close to one end of the bent rod 21. A positioning nut 6 is provided on the upper end surface of the insertion part of the adjusting screw rod 2 and the tie rod 10. The positioning adjusting nut is threadedly connected to the tie rod 10. A baffle is fixedly provided on the side surface of the track bed formwork 3. A plurality of positioning holes 30 for inserting the bent rod 21 are opened on the baffle. For a support of the ballastless track bed formwork 3, the inner ring diameter of the connecting ring 20 is larger than the diameter of the tie rod 10. Gaskets 7 are arranged between the connecting ring 20, the support nut 4, and the positioning nut 6. The gaskets 7 are inserted on the tie rod 10.

[0029] In this embodiment, the support of the ballastless track formwork 3 is placed on the surface of the tunnel invert. During construction, the adjusting screw rod 2 and the fastening column 10 are inserted and fixed to the track formwork 3, so as to achieve the effect of supporting the track formwork 3 on the vertical plane without leaving holes on the surface of the tunnel invert, protecting the original structure of the invert surface. By fixedly arranging angle steels 5 at both ends of the channel steel 1, the stress area of the channel steel 1 in the length direction can be increased, the pressure generated by the two-sided track formwork 3 on the channel steel 1 during the construction pouring process can be reduced, and the overall stability of the support is improved. By inserting a connecting rod 24 into the adjusting screw rod 2 and arranging a support spring 22, an elastic support is provided between the adjusting screw rod 2 and the fastening column 10, improving the support effect of the support on the track formwork 3, and helping to reduce the risk of deformation and damage of the adjusting screw rod 2 structure during use. By arranging a shock-absorbing spring 23 at the position where the bent rod 21 is inserted into the adjusting screw rod, the impact and vibration of the track formwork 3 on the support during the construction pouring process are reduced, the overall stability of the support is improved, and the risk of deformation and damage of the adjusting screw rod 2 structure during use is further reduced. By arranging a positioning nut 6 on the fastening column 10, the adjusting screw rod 2 can be positioned at a specific position in the axial direction of the fastening column 10, playing a role in stabilizing the adjusting screw rod 2. Through the positioning holes 30 opened on the side surface of the track formwork 3, the adjusting screw rod 2 can be positioned and adjusted in the vertical direction. In different states during the construction pouring process, the adjusting screw rod 2 can flexibly achieve different support effects on one side of the track formwork 3 according to the specific construction conditions. The inner ring diameter of the connecting ring 20 is larger than the diameter of the fastening column 10, and the adjusting screw rod 2 can more flexibly adjust the insertion angle and direction with the fastening column 10, facilitating fine adjustment and positioning of the adjusting screw rod 2, making the positioning of the adjusting screw rod 2 by the construction personnel more accurate, and improving the overall adjustability of the support.

[0030] Specific implementation process: When it is necessary to construct and pour concrete, first place the channel steel 1 in the groove reserved in advance on the invert surface, make the vertical surface of the angle steel 5 fit with the inner side wall of the groove, threadedly fasten the support nut 4 to the fastening column 10 on the channel steel 1, place a gasket 7 on the upper end of the support nut 4, insert the connecting ring 20 of the adjusting screw rod 2 into the fastening column 10, place a gasket 7 on the upper end of the connecting ring 20, and then threadedly fasten the positioning nut 6 to the fastening column 10, so that one end of the adjusting screw rod 2 is fixed to the fastening column 10, and the other end of the adjusting screw rod 2 is inserted into the positioning hole 30 opened on the track formwork 3. As the construction progresses, the thickness of the concrete poured into the track formwork 3 continuously increases. By inserting the bent rod 21 on the adjusting screw rod 2 into different positioning holes 30, the construction personnel can adjust the support angle of the support plate for the track formwork 3, so that the track formwork 3 receives appropriate support force in the support direction, thus better ensuring the construction quality.

[0031] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. Ballastless track formwork support, characterized in that: The invention comprises a channel steel (1), a supporting device and a ballast formwork (3) on both sides, wherein two bolting posts (10) are fixedly connected to both sides of the channel steel (1), and two supporting devices are arranged between the channel steel (1) and the ballast formwork (3) on both sides, and the supporting device comprises an adjusting screw rod (2), one end of the adjusting screw rod (2) is plugged with a connecting rod (24), one end of the connecting rod (24) away from the adjusting screw rod (2) is plugged with a connecting ring (20), and the other end of the adjusting screw rod (2) is plugged with a bent rod (21), the connecting ring (20) is sleeved on the bolting post (10), the bent rod (21) is plugged with the ballast formwork (3), a supporting nut (4) is arranged on the lower end surface of the plugging point between the connecting ring (20) and the bolting post (10), and the supporting nut (4) is threadedly connected with the bolting post (10).

2. The ballastless track formwork support according to claim 1, characterized in that: Two angle steels (5) are fixedly connected to the channel steel (1), and the two angle steels (5) are respectively located at two ends of the channel steel (1) along the length direction of the channel steel (1).

3. The ballastless track formwork support according to claim 1, characterized in that: The connecting rod (24) is inserted into the adjusting screw rod (2), and a supporting spring (22) is arranged inside the connecting rod (24).

4. The ballastless track formwork support according to claim 1, characterized in that: A positioning nut (6) is provided on the upper end surface of the insertion point between the connecting ring (20) and the bolt column (10), and the positioning nut is threadedly connected to the bolt column (10).

5. The ballastless track formwork support according to claim 1, characterized in that: A baffle is fixedly arranged on the inner side of the track bed template (3), and a plurality of positioning holes (30) for inserting the bent rods (21) are formed on the baffle.

6. The ballastless track formwork support according to claim 1, characterized in that: The inner ring diameter of the connecting ring (20) is larger than the diameter of the bolt column (10). A gasket (7) is provided between the connecting ring (20) and the supporting nut (4) and the positioning nut (6). The gasket (7) is plugged into the bolt column (10).

7. The ballastless track formwork support according to claim 1, characterized in that: The material of the track bed template (3) is the same as that of the channel steel (1), both of which are high-strength carbon structural steel.

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