A universal connecting node, a steel pipe arch support system and a construction method

Abstract

The application discloses a universal connecting node, a steel pipe arch supporting system and a construction method, wherein the universal connecting node comprises a first disc connecting piece and a second disc connecting piece, a first center hole is arranged at the center of the first disc connecting piece, the first disc connecting piece is fixed on the steel pipe arch supporting system through the first center hole, a second center hole is arranged at the center of the second disc connecting piece, the second disc connecting piece is fixed on the longitudinal connecting steel pipe connecting two steel pipe arch supports through the second center hole, a first connecting rod is arranged on the first disc connecting piece, a second connecting rod is arranged on the second disc connecting piece, the first connecting rod and the second connecting rod are connected, the connecting position adopts a concave-convex toothed mouth occlusion connecting form, and the connection is locked through a connecting bolt, and the side walls of the first disc connecting piece and the second disc connecting piece are all provided with insertion grooves, the two ends of the oblique connecting steel pipe are respectively inserted into different insertion grooves of the universal connecting nodes on the adjacent two steel pipe arch supports, and the oblique support with different angles is realized.

Description

Technical Field

[0001] This invention belongs to the field of tunnel support technology, and relates to a universal connection node, a steel pipe arch support system, and a construction method. Background Technology

[0002] With the increasing depth of coal mining, the pressure in mine roadways becomes more intense, making deep mine roadway support and soft rock roadway support critical issues that urgently need to be addressed. Currently, U-shaped steel metal supports are widely used in coal mine roadway support. In actual engineering, U-shaped steel supports often slip at the joints between adjacent segments. Furthermore, because U-shaped steel supports cannot be connected longitudinally, their overall stability is poor. For large-section coal mine roadways or when the surrounding rock pressure is high, this type of support structure faces the problem of insufficient load-bearing capacity. Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention aims to provide a universal joint node, a steel pipe arch support system, and a construction method. By setting multiple universal joint nodes on the steel pipe arch support, oblique connections at different angles between adjacent steel pipe arch supports are achieved, thereby enhancing the longitudinal stability of the steel pipe arch support system and improving its load-bearing capacity.

[0004] A universal joint of the present invention includes: a first disc connector and a second disc connector. The first disc connector has a first central hole at its center and is fixed to a steel pipe arch support through the first central hole. The second disc connector has a second central hole at its center and is fixed to a longitudinal connecting steel pipe connecting two steel pipe arch supports through the second central hole. The first disc connector has a first connecting rod, and the second disc connector has a second connecting rod. The first connecting rod and the second connecting rod are connected and the connection adopts a toothed interlocking connection form and is locked by connecting bolts. The side walls of the first disc connector and the second disc connector are provided with slots. The two ends of the oblique connecting steel pipe are respectively inserted into different slots of the universal joint on two adjacent steel pipe arch supports to achieve oblique support at different angles.

[0005] Furthermore, the first disc connector and the second disc connector have the same structure, both including a disc-shaped upper hub and a disc-shaped lower hub connected by screws. The side wall of the disc-shaped upper hub is provided with multiple threaded holes communicating with the central hole, and the side wall of the disc-shaped lower hub is provided with slots.

[0006] Furthermore, one end of the first connecting rod is connected to the disc-shaped lower hub of the first disc connector, and the other end of the first connecting rod has a threaded hole at its center and a toothed structure at its edge; one end of the second connecting rod is connected to the disc-shaped lower hub of the second disc connector, and the other end of the second connecting rod has a sleeve; the connecting bolt passes through the sleeve and engages with the threaded hole of the first connecting rod to lock the first and second connecting rods; a toothed structure is also provided at the connection between the sleeve and the first connecting rod.

[0007] The present invention also provides a steel pipe arch support system, including multiple steel pipe arch supports, connecting nodes, multiple longitudinal connecting steel pipes, and multiple oblique connecting steel pipes; adjacent steel pipe arch supports are connected by multiple longitudinal connecting steel pipes and multiple oblique connecting steel pipes; the connecting nodes adopt the above-mentioned universal connecting nodes, and the two ends of the oblique connecting steel pipes are respectively inserted into different slots of the universal connecting nodes on the two adjacent steel pipe arch supports to achieve oblique support at different angles.

[0008] The present invention also provides a steel pipe arch support system, comprising:

[0009] Step 1: Fit the first disc connector of the universal joint onto the corresponding steel pipe arc segment, and assemble multiple steel pipe arc segments into multiple steel pipe arch supports;

[0010] Step 2: Fit the two second disc connectors onto a longitudinal connecting steel pipe, and connect the two adjacent steel pipe arch supports through the longitudinal connecting steel pipe;

[0011] Step 3: Connect the second connecting rod of the second disc connector to the first connecting rod of the corresponding first disc connector using a tongue and groove tooth structure, and tighten it with connecting bolts.

[0012] Step 4: Rotate the locking bolts from the threaded holes on the side wall of the disc-shaped upper hub into the center hole to tighten the corresponding steel pipe arch support and longitudinal connecting steel pipe, thus completing the assembly and fixing of multiple universal connection nodes;

[0013] Step 5: Insert both ends of the diagonal connecting steel pipe into different slots of the universal joint on the arched support of two adjacent steel pipes to achieve diagonal support at different angles.

[0014] The universal joint, steel pipe arch support system, and construction method of the present invention have at least the following beneficial effects:

[0015] 1. The steel pipe arch support system of the present invention is a closed type, which has a higher load-bearing capacity compared with the semi-closed U-shaped steel support.

[0016] 2. The steel pipe arch support system of the present invention achieves oblique connection at different angles between adjacent steel pipe arch support structures by setting multiple universal connection nodes on the steel pipe arch support, thereby realizing the goal of adding multiple supports between adjacent steel pipe arch support structures along the axial direction, enhancing the longitudinal stability of the arch support structure system and improving the load-bearing capacity of the system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a universal connection node according to the present invention;

[0018] Figure 2 This is a schematic diagram showing the connection between the first disc connector and the second disc connector;

[0019] Figure 3 This is a structural schematic diagram of a steel pipe arch support system according to the present invention;

[0020] 1-First disc connector, 101-First center hole, 2-Second disc connector, 201-Second center hole, 3-Archive steel pipe support, 4-Longitudinal connecting steel pipe, 5-First connecting rod, 6-Second connecting rod, 7-Connecting bolt, 8-Slot, 9-Angled connecting steel pipe, 10-Screw, 11-First disc-shaped upper hub, 12-First disc-shaped lower hub, 13-Second disc-shaped upper hub, 14-Second disc-shaped lower hub, 15-Concave-convex tooth structure, 16-Sleeve, 17-Locking bolt. Detailed Implementation

[0021] like Figure 1 As shown, a universal joint of the present invention includes: a first disc connector 1 and a second disc connector 2. The first disc connector 1 has a first central hole 101 at its center and is fixed to the steel pipe arch support 3 through the first central hole 101. The second disc connector 2 has a second central hole 201 at its center and is fixed to the longitudinal connecting steel pipe 4 connecting two steel pipe arch supports through the second central hole 201. The first disc connector 1 has a first connecting rod 5, and the second disc connector 2 has a second connecting rod 6. The first connecting rod 5 and the second connecting rod 6 are connected, and the connection is a toothed connection with a concave-convex toothed joint, and is locked by a connecting bolt 7. The side walls of the first disc connector 1 and the second disc connector 2 are provided with slots 8. The two ends of the oblique connecting steel pipe 9 are respectively inserted into different slots 8 of the universal joint on the two adjacent steel pipe arch supports 3 to achieve oblique support at different angles.

[0022] The first disc connector 1 and the second disc connector 2 have the same structure, both including a disc-shaped upper hub and a disc-shaped lower hub connected by screws 10. The side wall of the disc-shaped upper hub is provided with multiple threaded holes communicating with the central hole, and the side wall of the disc-shaped lower hub is provided with slots 8.

[0023] like Figure 2 As shown, one end of the first connecting rod 5 is connected to the first disc-shaped lower hub 12 of the first disc connector 1. The other end of the first connecting rod 5 has a threaded hole at its center and a toothed structure 15 at its edge. One end of the second connecting rod 6 is connected to the second disc-shaped lower hub 14 of the second disc connector 2. The other end of the second connecting rod 6 has a sleeve 16. A connecting bolt 7 passes through the sleeve 16 and engages with the threaded hole of the first connecting rod 5 to lock the first connecting rod 5 and the second connecting rod 6. A toothed structure 15 is also provided at the connection between the sleeve 16 and the first connecting rod 5. Multiple slots 8 are provided on the side walls of the first disc-shaped upper hub 11 and the second disc-shaped upper hub 13.

[0024] like Figure 3 As shown, the present invention provides a steel pipe arch support system, comprising multiple steel pipe arch supports 3, connecting nodes, multiple longitudinal connecting steel pipes 4, and multiple diagonal connecting steel pipes 9. Adjacent steel pipe arch supports 3 are connected by the multiple longitudinal connecting steel pipes 4 and the multiple diagonal connecting steel pipes 9. The connecting nodes employ the aforementioned universal joints, with both ends of the diagonal connecting steel pipes 9 inserted into different slots 8 of the universal joints on adjacent steel pipe arch supports 3, thereby achieving diagonal support at different angles.

[0025] A construction method for a steel pipe arch support system according to the present invention includes:

[0026] Step 1: Fit the first disc connector 1 of the universal joint onto the corresponding steel pipe arc segment, and assemble multiple steel pipe arc segments into multiple steel pipe arch supports 3;

[0027] Step 2: Fit two second disc connectors 2 onto a longitudinal connecting steel pipe 4, and connect two adjacent steel pipe arch supports 3 through the longitudinal connecting steel pipe 4;

[0028] Step 3: Connect the second connecting rod 6 of the second disc connector 2 to the corresponding first connecting rod 5 of the first disc connector 1 using a toothed joint structure, and tighten it with connecting bolts 7.

[0029] Step 4: Rotate the locking bolt 17 from the threaded hole on the side wall of the first disc-shaped upper hub and the second disc-shaped upper hub into the center hole to tighten the corresponding steel pipe arch support 3 and longitudinal connecting steel pipe 4, and complete the assembly and fixing of multiple universal connection nodes.

[0030] Step 5: Insert both ends of the oblique connecting steel pipe 9 into different slots 8 of the universal connection nodes on the two adjacent steel pipe arch supports to achieve oblique support at different angles.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the ideas of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A universal connection node, characterized in that, include: A first disc connector and a second disc connector are provided. The first disc connector has a first central hole at its center, through which it is fitted and fixed to the steel pipe arch support. The second disc connector has a second central hole at its center, through which it is fitted and fixed to the longitudinal connecting steel pipe connecting the two steel pipe arch supports. The first disc connector has a first connecting rod, and the second disc connector has a second connecting rod. The first connecting rod and the second connecting rod are connected, and the connection is a toothed joint with a tongue and groove, and is locked with connecting bolts. The side walls of both the first disc connector and the second disc connector are provided with slots, and the two ends of the oblique connecting steel pipe are respectively inserted into different slots of the universal joint nodes on the two adjacent steel pipe arch supports to achieve oblique support at different angles. The first disc connector and the second disc connector have the same structure, both including a disc-shaped upper hub and a disc-shaped lower hub connected by screws. The side wall of the disc-shaped upper hub is provided with multiple threaded holes communicating with the central hole, and the side wall of the disc-shaped lower hub is provided with slots.

2. The universal joint node as described in claim 1, characterized in that, One end of the first connecting rod is connected to the disc-shaped lower hub of the first disc connector, and the other end of the first connecting rod has a threaded hole at its center and a toothed structure at its edge; one end of the second connecting rod is connected to the disc-shaped lower hub of the second disc connector, and the other end of the second connecting rod has a sleeve; the connecting bolt passes through the sleeve and engages with the threaded hole of the first connecting rod to lock the first and second connecting rods; a toothed structure is also provided at the connection between the sleeve and the first connecting rod.

3. A steel pipe arch support system, characterized in that, It includes multiple steel pipe arch supports, connecting nodes, multiple longitudinal connecting steel pipes, and multiple diagonal connecting steel pipes; adjacent steel pipe arch supports are connected by multiple longitudinal connecting steel pipes and multiple diagonal connecting steel pipes; the connecting nodes adopt universal connecting nodes as described in any one of claims 1 to 2, and the two ends of the diagonal connecting steel pipes are respectively inserted into different slots of the universal connecting nodes on the two adjacent steel pipe arch supports to achieve diagonal support at different angles.

4. A construction method for the steel pipe arch support system as described in claim 3, characterized in that, include: Step 1: Fit the first disc connector of the universal joint onto the corresponding steel pipe arc segment, and assemble multiple steel pipe arc segments into multiple steel pipe arch supports; Step 2: Fit the two second disc connectors onto a longitudinal connecting steel pipe, and connect the two adjacent steel pipe arch supports through the longitudinal connecting steel pipe; Step 3: Connect the second connecting rod of the second disc connector to the first connecting rod of the corresponding first disc connector using a tongue and groove tooth structure, and tighten it with connecting bolts. Step 4: Rotate the locking bolts from the threaded holes on the side wall of the disc-shaped upper hub into the center hole to tighten the corresponding steel pipe arch support and longitudinal connecting steel pipe, thus completing the assembly and fixing of multiple universal connection nodes; Step 5: Insert both ends of the diagonal connecting steel pipe into different slots of the universal joint on the arched support of two adjacent steel pipes to achieve diagonal support at different angles.

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