A kind of supporting arch frame that passes under the existing railway at a close distance

Abstract

The utility model relates to the technical field of tunnel construction, and discloses a support arch frame for passing under an existing railway at a close distance, including a top arch rib, a plurality of embedding grooves are provided inside the top arch rib, a support plate is slidably connected inside the embedding groove, a bearing seat is fixedly connected to the outside of the support plate on the same side, a rotating shaft is fixedly connected to the outside of the support plate on the same side, a base plate is connected to the bottom of the support plate, a support seat is fixedly connected to the top of the base plate, a short shaft is fixedly connected to the inside of the support seat, and a connecting rod is rotatably connected to the outside of the short shaft. In the utility model, the two connecting rods are pushed toward the direction of the support plate, so that the connecting rods continuously open the two support plates, thereby being stuck between the two top arch ribs, providing support force for the gap of the arch frame, making the device structure more solid, and facilitating installation and disassembly, thereby realizing modular installation.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a supporting arch frame that passes under an existing railway at a close distance. Background Art

[0002] In the process of rapid urban development, the construction and renewal of transportation infrastructure is particularly important. In order to maintain the mobility of urban traffic and ensure the safe operation of railways, it is often necessary to carry out construction work under the railway without interfering with the normal operation of existing railways. Such projects are usually characterized by high construction difficulty, high risk and strict technical requirements. Traditional supporting structures often cannot meet the modern construction needs of environmental protection, safety and rapid construction. In view of this, a new type of supporting arch frame for close-range underpass of existing railways is proposed;

[0003] After searching: Chinese patent announcement number: CN220849694U, it relates to the technical field related to tunnel construction, and discloses a support arch frame for passing under an existing railway at a close distance, including a group of support members respectively arranged at both ends of the underpass of the existing railway, the support member is in the shape of a "door" as a whole, including two pile foundations arranged at intervals on the left and right and a crown beam arranged between the two pile foundations, the tops of the two groups of support members are connected by a row of pipe sheds driven in at intervals in the horizontal direction, a row of rectangular steel arch frames are arranged longitudinally below the pipe shed, and adjustment seats are arranged on the two legs of each rectangular steel arch frame; "door"-shaped support members are arranged at both ends of the underground passage, and a row of pipe sheds are driven in at intervals in the horizontal direction on the support members to connect the support members, and a rectangular steel arch frame is arranged below the pipe shed, and the height of the rectangular steel arch frame can be adjusted by adjusting the height of the adjustment seat, so that the safety and stability of the underground passage can be guaranteed while ensuring the stability of the existing railway.

[0004] The above patent embodiment states that "it includes a group of support members respectively arranged at both ends of the underpass of the existing railway (6), and the support members are in the shape of a "door" as a whole, including two pile foundations (1) arranged at intervals on the left and right and a crown beam (2) arranged between the two pile foundations (1). The tops of the two groups of support members are connected by a row of pipe racks (3) driven in at intervals in the horizontal direction, and a row of rectangular steel arch frames (4) are arranged longitudinally below the pipe racks (3). Adjustable supports (5) are arranged on the two legs of each rectangular steel arch frame (4)". The height of the rectangular steel arch frame can be adjusted by adjusting the height of the adjustable supports. However, although the above device provides stability and adjustment characteristics to a certain extent, it does not adopt a modular design, which limits its performance in coping with changing construction environments and rapid installation capabilities. Therefore, in view of the above-mentioned deficiencies, a new type of support arch frame for underpassing the existing railway at a close distance is proposed. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a support arch frame that passes under an existing railway at a close distance, aiming to improve the problem of cumbersome installation of some devices in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a support arch frame that passes under an existing railway at a close distance, comprising a top arch rib and a support plate, wherein a plurality of embedding grooves are provided inside the top arch rib, the support plate is slidably connected inside the embedding groove, a rotating assembly is slidably connected inside the embedding groove, a bearing seat is fixedly connected to the outside of the support plate on the same side, a rotating shaft is fixedly connected to the outside of the support plate on the same side, a base plate is connected to the bottom of the support plate, a support seat is fixedly connected to the top of the base plate, a short shaft is fixedly connected to the inside of the support seat, a connecting rod is rotatably connected to the outside of the short shaft, an extension rod is fixedly connected to the outside of the connecting rod, a long shaft is rotatably connected to the inside of the two extension rods on the same side, and a fixing assembly is fixedly connected to the bottom of the long shaft;

[0007] As a further description of the above technical solution: the fixing assembly includes a fixing block, the outside of the fixing block is fixedly connected to the outside of the long shaft, the internal thread of the fixing block has a plurality of screws 2, and the external threads of two screws 2 on the same side are connected to a support plate;

[0008] As a further description of the above technical solution: the top arch rib is externally fixedly connected with two upper fixing plates, and the internal threads of the upper fixing plates are connected with a plurality of screws;

[0009] As a further description of the above technical solution: the outer threads of the plurality of screws 1 on the same side are connected to a lower fixing plate, the bottom of the lower fixing plate is fixedly connected to left and right arch ribs, and the outer portion of the upper fixing plate is in contact with the outer portion of the lower fixing plate;

[0010] As a further description of the above technical solution: the outer portion of the bearing seat is rotatably connected to the inner portion of the rotating shaft, and the top of the fixing block is in contact with the bottom of the two support plates on the same side;

[0011] As a further description of the above technical solution: the inner parts of the left and right arch ribs are fixedly connected with a plurality of fixing screws, and the outer parts of the fixing screws are fixedly connected with abutments;

[0012] As a further description of the above technical solution: the outer parts of the left and right arch ribs are in contact with the outer part of the abutment, and the bottom of the abutment is fixedly connected with a plurality of spikes;

[0013] As a further description of the above technical solution: two anchor rods are fixedly connected inside the abutment, and the outsides of the two anchor rods on the same side are fixedly connected to the inside of the left and right arch ribs.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the two connecting rods are pushed toward the support plates, so that the connecting rods continuously open the two support plates, thereby being stuck between the two top arch ribs, providing support force for the gap of the arch frame, making the device structure more solid, and facilitating installation and disassembly, thereby realizing modular installation.

[0016] 2. In the utility model, the main body is constructed by the top arch rib and the left and right arch ribs, the lower fixing plate and the upper fixing plate are fixed by screws, the left and right arch ribs are fixed on the abutment, and then fixed again with anchor rods and spikes, so that the semicircular arch rib design helps to disperse and withstand the pressure from above and the side, thereby enhancing the stability of the entire structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a method of passing under an existing railway support arch at a close distance proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a top arch rib of an existing railway support arch frame that is passed under the existing railway support arch frame at a close distance proposed by the utility model;

[0019] Figure 3 This is a structural schematic diagram of a support plate for passing under an existing railway support arch at a close distance proposed by the utility model;

[0020] Figure 4 for Figure 2 The enlarged view of point A in the middle;

[0021] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0022] Legend:

[0023] 1. Top arch rib; 2. Fixing screws; 3. Left and right arch ribs; 4. Lower fixing plate; 5. Upper fixing plate; 6. Screw one; 7. Abutment; 8. Embedded groove; 9. Support plate; 10. Bearing seat; 11. Rotating shaft; 12. Base plate; 13. Support seat; 14. Short shaft; 15. Connecting rod; 16. Extension rod; 17. Long shaft; 18. Fixing block; 19. Screw two; 20. Spikes; 21. Anchor rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1 , Figure 3 , Figure 5 The utility model provides an embodiment: a support arch frame for underpassing an existing railway at a close distance, including a top arch rib 1, which is a key part of the entire support arch frame. Its semicircular design optimizes the ability to withstand pressure. It provides the main bearing capacity for the entire structure and ensures the stability when the underpass project is carried out above the railway. The top arch rib 1 is provided with a plurality of embedded grooves 8 inside. The embedded grooves 8 are slidably connected with a support plate 9 inside. The embedded grooves 8 are connected to the top arch rib 1 through the embedded grooves. The support plate 9 can provide intermittent support for the top arch rib 1 to increase the overall stability of the structure. The support plate 9 on the same side is fixedly connected to the outside with a bearing seat 10. The support plate 9 on the same side is fixedly connected to the outside with a rotating shaft 11. The bearing seat 10 is fixed to the support plate 9 and used in conjunction with the rotating shaft 11 to allow the two support plates 9 to rotate slightly, which is convenient for being inserted into the embedded grooves 8. The bottom of the support plate 9 is connected to a base plate 12. The top of the base plate 12 is fixedly connected to a support seat 13. The inside of the support seat 13 is fixedly connected to a short shaft 14. The base plate 12 is connected to the bottom of the support plate 9, and the support seat 1 3 is fixed above the base plate 12 to provide a stable platform for the short shaft 14. The outside of the short shaft 14 is rotatably connected to the connecting rod 15, and the outside of the connecting rod 15 is fixedly connected to the extension rod 16. The inside of the two extension rods 16 on the same side are rotatably connected to the long shaft 17, and the bottom of the long shaft 17 is fixedly connected to the fixing assembly. These parts cooperate with each other to form an adjustable connecting rod system, which can open the two support plates 9 and snap into the embedding groove 8. The fixing assembly includes a fixing block 18, the outside of the fixing block 18 is fixedly connected to the outside of the long shaft 17, and the internal thread of the fixing block 18 has multiple screws 19 to prevent the connecting rod system from rebounding, providing additional stability. The external threads of the two screws 19 on the same side are connected to the support plate 9. The outside of the bearing seat 10 is rotatably connected to the inside of the rotating shaft 11, and the top of the fixing block 18 contacts the bottom of the two support plates 9 on the same side.

[0026] Reference Figure 1The outside of the top arch rib 1 is fixedly connected with two upper fixing plates 5, the internal threads of the upper fixing plates 5 are connected with multiple screws 6, the external threads of the multiple screws 6 on the same side are connected with the lower fixing plate 4, the bottom of the lower fixing plate 4 is fixedly connected with the left and right arch ribs 3, the outside of the upper fixing plate 5 is in contact with the outside of the lower fixing plate 4, these plates and screws are used in combination to strengthen the connection between the top arch rib 1 and the left and right arch ribs 3, and improve the shear resistance of the overall structure.

[0027] Reference Figure 2 , Figure 4 The left and right arch ribs 3 are internally fixedly connected with a plurality of fixing screws 2, and the fixing screws 2 are externally fixedly connected with the abutment 7. As the part in contact with the ground, the abutment 7 provides the base support of the entire structure and is further reinforced by the anchor rods 21. The outside of the left and right arch ribs 3 is in contact with the outside of the abutment 7. The left and right arch ribs 3 provide lateral support and are connected to the abutment 7 by the fixing screws 2, thereby enhancing the lateral stability of the structure. The bottom of the abutment 7 is fixedly connected with a plurality of spikes 20, and the inside of the abutment 7 is fixedly connected with two anchor rods 21. The outsides of the two anchor rods 21 on the same side are fixedly connected to the inside of the left and right arch ribs 3. These are fixing elements. The spikes 20 penetrate deep into the ground, and the anchor rods 21 firmly connect the left and right arch ribs 3 with the abutment 7, thereby ensuring the structure's ability to resist forces from all directions.

[0028] Compared with some devices in the prior art, the above content can realize modular installation and disassembly and enhance the stability of the device.

[0029] Working principle: before opening and construction, the surrounding ground needs to be flattened, and the abutment 7 is first fixed to the ground by nails 20, or a part of it can be buried underground, and then the left and right arch ribs 3 are fixed on the abutment 7 by fixing screws 2, and the anchor rods 21 are penetrated through the abutment 7 and the left and right arch ribs 3 and deeply inserted into the ground and fixed. At this time, the top arch rib 1 is erected between the left and right arch ribs 3, and the lower fixing plate 4 and the upper fixing plate 5 are fixed with screws 6, so that the left and right arch ribs 3 on the left and right sides are fixed with the top arch rib 1, and then the support plate 9 is aligned with the embedding groove 8 of the top arch rib 1, and the connecting rod 15 is slowly approached to the support plate 9 by pressing the fixing block 18, and the base plate 12 at the bottom of the support seat 13 is slowly pushed open, so that the support plate 9 under the base plate 12 is slowly stretched open and inserted into the embedding groove 8 little by little. When the fixing block 18 is pressed to contact the support plate 9, the two support plates 9 have been completely inserted into the embedding groove 8, and finally the fixing block 18 is fixed to the support plate 9 with screws 19, thereby fixing the device.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support arch frame for passing under an existing railway at a short distance, comprising a top arch rib (1) and a support plate (9), characterized in that: A plurality of embedding grooves (8) are provided inside the top arch rib (1), and a rotating assembly is slidably connected inside the embedding groove (8); a bearing seat (10) is fixedly connected to the outside of the support plate (9) on the same side; a rotating shaft (11) is fixedly connected to the outside of the support plate (9) on the same side; a base plate (12) is connected to the bottom of the support plate (9); a support seat (13) is fixedly connected to the top of the base plate (12); a short shaft (14) is fixedly connected inside the support seat (13); a connecting rod (15) is rotatably connected to the outside of the short shaft (14); an extension rod (16) is fixedly connected to the outside of the connecting rod (15); a long shaft (17) is rotatably connected to the inside of the two extension rods (16) on the same side; and a fixing assembly is fixedly connected to the bottom of the long shaft (17).

2. According to claim 1, a method for passing under an existing railway support arch at a close distance is characterized in that: The fixing assembly comprises a fixing block (18), the outside of the fixing block (18) is fixedly connected to the outside of the long shaft (17), the inside of the fixing block (18) is threadedly connected to a plurality of screws 2 (19), and the outsides of two screws 2 (19) on the same side are threadedly connected to a support plate (9).

3. The method for passing under an existing railway support arch at a close distance according to claim 1, characterized in that: The top arch rib (1) is externally fixedly connected with two upper fixing plates (5), and the internal threads of the upper fixing plates (5) are connected with a plurality of screws (6).

4. The method for passing under an existing railway support arch at a close distance according to claim 3 is characterized in that: The external threads of the plurality of screws (6) on the same side are connected to a lower fixing plate (4), the bottom of the lower fixing plate (4) is fixedly connected to left and right arch ribs (3), and the outside of the upper fixing plate (5) is in contact with the outside of the lower fixing plate (4).

5. The method for passing under an existing railway support arch at a close distance according to claim 2 is characterized in that: The outside of the bearing seat (10) is rotatably connected to the inside of the rotating shaft (11), and the top of the fixing block (18) is in contact with the bottoms of the two support plates (9) on the same side.

6. The method for passing under an existing railway support arch at a close distance according to claim 4, characterized in that: The inside of the left and right arch ribs (3) are fixedly connected with a plurality of fixing screws (2), and the outside of the fixing screws (2) are fixedly connected with a bridge abutment (7).

7. The method for passing under an existing railway support arch at a short distance according to claim 6, characterized in that: The outside of the left and right arch ribs (3) are in contact with the outside of the abutment (7), and a plurality of spikes (20) are fixedly connected to the bottom of the abutment (7).

8. The method for passing under an existing railway support arch at a close distance according to claim 6, characterized in that: Two anchor rods (21) are fixedly connected inside the abutment (7), and the outsides of the two anchor rods (21) on the same side are fixedly connected to the insides of the left and right arch ribs (3).

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