阅读说明：本技术 钢拱架锁紧装置、钢拱架及钢拱架的拼装方法 (Steel arch locking device, steel arch and steel arch assembling method ) 是由 姜礼杰 杨航 钱豪 彭飞虎 吴乾坤 于 2021-09-14 设计创作，主要内容包括：本发明公开了一种钢拱架锁紧装置、钢拱架及钢拱架的拼装方法,钢拱架锁紧装置用于将第一钢拱架和第二钢拱架拼装对接,钢拱架锁紧装置包括：卡扣结构,包括卡扣部,卡扣部安装于第二钢拱架上；锁紧结构,包括锁舌,锁舌安装于第一钢拱架上,锁舌可相对卡扣部沿与第一钢拱架和第二钢拱架的拼装方向垂直的方向移动而与卡扣部锁紧配合。本发明的钢拱架锁紧装置,通过卡扣部和锁舌的锁紧限位,使得第一钢拱架和第二钢拱架无法发生相对运动,实现了第一钢拱架和第二钢拱架的快速拼装对接,并且若需要进一步连接加固,在焊接和/或螺栓连接的过程中,第一钢拱架和第二钢拱架均不会发生偏移,从而确保第一钢拱架和第二钢拱架连接稳固且对接准确。(The invention discloses a steel arch locking device, a steel arch and a steel arch assembling method, wherein the steel arch locking device is used for assembling and butting a first steel arch and a second steel arch, and comprises the following components: the buckling structure comprises a buckling part, and the buckling part is arranged on the second steel arch frame; the locking structure comprises a lock tongue, the lock tongue is installed on the first steel arch frame, and the lock tongue can move along the direction vertical to the assembling direction of the first steel arch frame and the second steel arch frame relative to the buckling part and is in locking fit with the buckling part. According to the steel arch locking device, the first steel arch and the second steel arch cannot move relatively through the locking limit of the buckling part and the lock tongue, so that the first steel arch and the second steel arch are quickly assembled and butted, and if further connection and reinforcement are needed, the first steel arch and the second steel arch cannot deviate in the welding and/or bolt connection process, so that the first steel arch and the second steel arch are stably connected and are accurately butted.)

1. The utility model provides a steel bow member locking device which characterized in that for assemble the butt joint with first steel bow member and second steel bow member, steel bow member locking device includes:

the buckling structure comprises a buckling part, and the buckling part is arranged on the second steel arch frame;

the locking structure comprises a lock tongue, wherein the lock tongue is arranged on the first steel arch frame, and the lock tongue can move relative to the buckling part along the direction vertical to the assembling direction of the first steel arch frame and the second steel arch frame and is in locking fit with the buckling part.

2. The steel arch locking device of claim 1,

the first steel arch frame and the second steel arch frame are spliced and butted along the circumferential direction of a tunnel to support the tunnel, and the lock tongue moves relative to the buckling part along the axial direction or the radial direction of the tunnel and is in locking fit with the buckling part.

3. The steel arch locking device of claim 1,

the first steel arch frame and the second steel arch frame are spliced and butted along the radial direction of the tunnel to support the tunnel, and the lock tongue moves relative to the buckling part along the circumferential direction of the tunnel and is in locking fit with the buckling part.

4. The steel arch locking device of claim 2,

the end face of the first steel arch is relatively provided with two lock tongues, the two lock tongues are arranged along the axial direction or the radial direction of the tunnel, and the lock tongues can move along the axial direction or the radial direction of the tunnel to be in locking fit with the buckling parts.

5. The steel arch locking device of claim 4,

the end face of the first steel arch is provided with mounting grooves, and the two lock tongues are respectively mounted on two opposite groove walls in the mounting grooves.

6. The steel arch locking device of claim 5,

the end face of the first steel arch is provided with four limiting plates, the four limiting plates enclose to form the mounting groove, the two lock tongues are respectively mounted on the inner side faces of the two limiting plates which are oppositely arranged, and the end faces of the four limiting plates abut against the end face of the second steel arch.

7. The steel arch locking device of claim 3,

the spring bolt is installed on the medial surface of first steel bow member, the spring bolt can be followed the circumference in tunnel extends outside the terminal surface of first steel bow member and with buckle portion locking fit.

8. The steel arch locking device of claim 7,

the inner side surface of the first steel arch frame is provided with a limiting block, the limiting block is provided with a limiting groove, the spring bolt moves in the limiting groove along the circumferential direction of the tunnel, and the buckling part is inserted in the limiting groove along the radial direction of the tunnel and is in locking fit with the spring bolt.

9. The steel arch locking device of claim 4,

the buckle structure comprises a connecting portion, the connecting portion is connected with the end face of the second steel arch frame, two buckle portions are symmetrically distributed on the connecting portion, the connecting portion is inserted between the two lock tongues along the circumferential direction of the tunnel, and the two buckle portions are respectively in locking fit with the two lock tongues.

10. The steel arch locking device of claim 8,

the clamping part is connected with the inner side face of the second steel arch frame through a connecting part, the clamping part is close to the end part of the second steel arch frame, the connecting part penetrates through the limiting groove along the radial direction of the tunnel, and the clamping part is in locking fit with the lock tongue.

11. Steel arch locking device according to any one of claims 1 to 10,

the spring bolt is connected with the first steel arch frame through a spring, the spring is arranged along the vertical direction of the assembling direction of the first steel arch frame and the second steel arch frame, and the spring bolt is abutted to the buckling part under the elastic restoring force of the spring.

12. The steel arch locking device of claim 11,

one end of the spring is connected with the first steel arch frame through a locking block, a tension bolt is installed on the locking block and connected with the spring bolt, the spring sleeve is arranged on the tension bolt, and two ends of the spring are respectively connected with the spring bolt and the locking block in a butting mode.

13. The steel arch locking device of claim 12,

the locking block is provided with a sliding groove, the spring is installed in the sliding groove, and the spring bolt is connected with the sliding groove in a sliding mode.

14. Steel arch locking device according to any one of claims 1 to 10,

the end face of the lock tongue is provided with a first guide wedge surface, the end face of the buckling part is provided with a second guide wedge surface, and the second guide wedge surface is matched with the first guide wedge surface.

15. The utility model provides a steel bow member, its characterized in that, includes steel bow member main part, the one end of steel bow member main part is equipped with buckle structure, buckle structure includes buckle portion, the other end of steel bow member main part is equipped with locking structure, locking structure includes the spring bolt.

16. The steel arch of claim 15, wherein,

two lock tongues are oppositely arranged on the end face of one end of the steel arch body, and the buckling part is arranged on the end face of the other end of the steel arch body.

17. The steel arch of claim 15, wherein,

the spring bolt and the buckling part are arranged on the inner side face of the steel arch body and are respectively close to two ends of the steel arch body.

18. The steel arch of claim 17, wherein,

the end faces of two ends of the steel arch body are respectively provided with a connecting plate, and the two connecting plates are respectively provided with a plurality of connecting holes in one-to-one correspondence.

19. A method for assembling a plurality of steel arches according to claim 16 into a ring for supporting a tunnel, comprising the steps of:

the buckling part on one steel arch is locked between the two lock tongues on the other steel arch along the circumferential direction of the tunnel, so that the two steel arches are spliced and butted;

and repeating the steps until a plurality of steel arch frames are assembled into a ring.

20. A method for assembling a steel arch in a ring for supporting a tunnel, the method comprising the steps of:

the buckling part on one steel arch is matched with the lock tongue on the other steel arch in a locking manner inwards along the radial direction of the tunnel, and the end faces of the two steel arches are attached to each other;

connecting the jointed end surfaces of the two steel arches through a connecting piece;

and repeating the steps until a plurality of steel arch frames are assembled into a ring.

Technical Field

The invention relates to the technical field of construction, in particular to a steel arch locking device, a steel arch and a steel arch assembling method.

Background

In recent years, with the continuous development of economy and the continuous application of high and new technologies, tunnels and underground engineering in China are developed rapidly, the problems of strength and construction efficiency of a steel arch support serving as one of main schemes of mine tunnel support are highlighted year by year, and further development of underground engineering construction is restricted. At present, the steel arch support adopts the traditional manual installation mode to assemble a plurality of steel arches, and the node of the plurality of steel arches is welded and bolted connection, and because the steel arch is in the welding and bolted connection's in-process, the position is squinted easily, leads to assembling the degree of difficulty big, and connects unstably.

Disclosure of Invention

The invention aims to provide a steel arch locking device, a steel arch and a steel arch assembling method, and aims to solve the technical problems of high assembling difficulty and unstable connection caused by easy deviation of the position of the steel arch during assembling of the steel arch at present.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides a steel arch locking device, which is used for splicing and butting a first steel arch and a second steel arch, and comprises: the buckling structure comprises a buckling part, and the buckling part is arranged on the second steel arch frame; the locking structure comprises a lock tongue, wherein the lock tongue is arranged on the first steel arch frame, and the lock tongue can move relative to the buckling part along the direction vertical to the assembling direction of the first steel arch frame and the second steel arch frame and is in locking fit with the buckling part.

In an embodiment of the present invention, the first steel arch and the second steel arch are spliced and butted along a circumferential direction of a tunnel to support the tunnel, and the lock tongue moves in an axial direction or a radial direction of the tunnel relative to the buckle portion to be locked and fitted to the buckle portion.

In an embodiment of the present invention, the first steel arch and the second steel arch are assembled and butted in a radial direction of a tunnel to support the tunnel, and the lock tongue moves in a circumferential direction of the tunnel with respect to the lock part to be locked and fitted to the lock part.

In an embodiment of the invention, two locking tongues are oppositely arranged on the end surface of the first steel arch frame, the two locking tongues are arranged along the axial direction or the radial direction of the tunnel, and the locking tongues can move along the axial direction or the radial direction of the tunnel to be in locking fit with the buckling parts.

In an embodiment of the invention, an installation groove is formed in an end face of the first steel arch frame, and the two lock tongues are respectively installed on two opposite groove walls in the installation groove.

In the embodiment of the invention, four limiting plates are arranged on the end surface of the first steel arch frame, the four limiting plates surround to form the mounting groove, the two lock tongues are respectively arranged on the inner side surfaces of the two limiting plates which are oppositely arranged, and the end surfaces of the four limiting plates abut against the end surface of the second steel arch frame.

In an embodiment of the present invention, the locking tongue is mounted on an inner side surface of the first steel arch, and the locking tongue may extend out of an end surface of the first steel arch in a circumferential direction of the tunnel to be in locking fit with the fastening portion.

In an embodiment of the invention, a limiting block is installed on the inner side surface of the first steel arch frame, a limiting groove is formed in the limiting block, the lock tongue moves in the limiting groove along the circumferential direction of the tunnel, and the buckling part is inserted in the limiting groove along the radial direction of the tunnel and is in locking fit with the lock tongue.

In an embodiment of the invention, the buckle structure comprises a connecting part, the connecting part is connected with an end face of the second steel arch, two buckle parts are symmetrically distributed on the connecting part, the connecting part is inserted between the two lock tongues along the circumferential direction of the tunnel, and the two buckle parts are respectively in locking fit with the two lock tongues.

In an embodiment of the invention, the buckling part is connected with the inner side surface of the second steel arch frame through a connecting part, the buckling part is arranged close to the end part of the second steel arch frame, the connecting part penetrates through the limiting groove along the radial direction of the tunnel, and the buckling part is in locking fit with the lock tongue.

In an embodiment of the present invention, the latch is connected to the first steel arch through a spring, the spring is disposed along a direction perpendicular to an assembling direction of the first steel arch and the second steel arch, and the latch abuts against the locking portion under an elastic restoring force of the spring.

In an embodiment of the invention, one end of the spring is connected with the first steel arch frame through a locking block, a tensioning bolt is installed on the locking block and is connected with the lock tongue, the spring is sleeved on the tensioning bolt, and two ends of the spring are respectively abutted against the lock tongue and the locking block.

In the embodiment of the invention, a sliding groove is arranged on the locking block, the spring is arranged in the sliding groove, and the lock tongue is in sliding connection with the sliding groove.

In an embodiment of the present invention, an end surface of the lock tongue is provided with a first guide wedge surface, an end surface of the fastening portion is provided with a second guide wedge surface, and the second guide wedge surface is matched with the first guide wedge surface.

The invention further provides a steel arch centering, which comprises a steel arch centering main body, wherein a buckle structure is arranged at one end of the steel arch centering main body and comprises a buckle part, and a locking structure is arranged at the other end of the steel arch centering main body and comprises a lock tongue.

In an embodiment of the present invention, two lock tongues are oppositely disposed on an end surface of one end of the steel arch body, and the fastening portion is mounted on an end surface of the other end of the steel arch body.

In an embodiment of the present invention, the lock tongue and the fastening portion are both mounted on an inner side surface of the steel arch main body and are respectively disposed near two ends of the steel arch main body.

In an embodiment of the invention, the end surfaces of the two ends of the steel arch body are respectively provided with a connecting plate, and the two connecting plates are respectively provided with a plurality of connecting holes which are in one-to-one correspondence.

The invention also provides an assembling method of the steel arch centering, which is used for assembling a plurality of the steel arch centering into a ring to support the tunnel and comprises the following steps: the buckling part on one steel arch is locked between the two lock tongues on the other steel arch along the circumferential direction of the tunnel, so that the two steel arches are spliced and butted; and repeating the steps until a plurality of steel arch frames are assembled into a ring.

The invention also provides an assembling method of the steel arch centering, which is used for assembling a plurality of the steel arch centering into a ring to support the tunnel and comprises the following steps: the buckling part on one steel arch is matched with the lock tongue on the other steel arch in a locking manner inwards along the radial direction of the tunnel, and the end faces of the two steel arches are attached to each other; connecting the jointed end surfaces of the two steel arches through a connecting piece; and repeating the steps until a plurality of steel arch frames are assembled into a ring.

The invention has the characteristics and advantages that:

the invention relates to a steel arch locking device, which is characterized in that when a first steel arch and a second steel arch are assembled, a buckling part arranged on the second steel arch moves to a bolt part on the first steel arch along the assembling direction, and simultaneously the bolt moves along the direction vertical to the assembling direction to be locked and matched with the buckling part, so that the first steel arch and the second steel arch are quickly assembled and butted, and the first steel arch and the second steel arch can not generate relative movement through the locking limit of the buckling part and the bolt, therefore, the steel arch locking device of the invention realizes the quick assembling and butt joint of the first steel arch and the second steel arch, and if the butt joint position of the first steel arch and the second steel arch needs to be welded and/or further connected and reinforced through other connection modes such as bolt connection and the like, during the welding and/or bolt connection, first steel bow member and second steel bow member all can not take place the skew to it is firm and the butt joint accuracy to ensure first steel bow member and second steel bow member to connect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a steel arch locking device according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a locking structure of a steel arch locking device according to a first embodiment of the present invention.

Fig. 3 is a sectional view of a locking structure of a steel arch locking apparatus according to a first embodiment of the present invention.

Fig. 4 is a partial cross-sectional view of the locking engagement of the steel arch locking device of the first embodiment of the present invention.

Fig. 5 is a structural view illustrating a locking structure of a steel arch locking apparatus according to a second embodiment of the present invention.

Fig. 6 is a sectional view of a locking structure of a steel arch locking apparatus according to a second embodiment of the present invention.

Fig. 7 is a schematic structural view of a snap structure of a steel arch locker according to a second embodiment of the present invention.

Fig. 8 is a partial cross-sectional view of the locking engagement of a second embodiment of the steel arch locking apparatus of the present invention.

Fig. 9 is a schematic structural view of a steel arch according to a first embodiment of the present invention.

Fig. 10 is a schematic structural view of a steel arch according to a second embodiment of the present invention.

Fig. 11 is a schematic structural view of a support ring according to a first embodiment of the present invention.

Fig. 12 is a schematic structural view of a support ring according to a second embodiment of the present invention.

In the figure:

1. a steel arch frame; 11. a first steel arch; 12. a second steel arch; 13. a steel arch body; 14. a connecting plate; 2. a locking structure; 21. a latch bolt; 21', a lock tongue; 22. a spring; 23. a locking block; 231. a chute; 24. tightening the bolts; 25. a first guide wedge surface; 26. a limiting block; 261. a limiting groove; 27. a limiting plate; 271. mounting grooves; 3. a buckle structure; 31. a fastening part; 31', a fastening part; 32. a connecting portion; 33. a second guide wedge surface; 4. a support ring; 4', a support ring; 5. and (4) tunneling.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Implementation mode one

As shown in fig. 1, 4 and 8, the present invention provides a steel arch locking device for splicing and butting a first steel arch 11 and a second steel arch 12, the steel arch locking device comprising: the buckling structure 3 comprises a buckling part which is arranged on the second steel arch frame 12; locking structure 2, including the spring bolt, the spring bolt is installed on first steel bow member 11, and the spring bolt can be relative buckle portion along the vertical direction removal with the direction of assembling of first steel bow member 11 and second steel bow member 12 and with buckle portion locking fit.

The invention relates to a steel arch locking device, which is characterized in that when a first steel arch 11 and a second steel arch 12 are assembled, a buckling part arranged on the second steel arch 12 moves to a bolt part on the first steel arch 11 along the assembling direction, and the bolt moves along the direction vertical to the assembling direction and is in locking fit with the buckling part, so that the first steel arch 11 and the second steel arch 12 are quickly assembled and butted, and the first steel arch 11 and the second steel arch 12 cannot relatively move through the locking limit of the buckling part and the bolt, therefore, the steel arch locking device of the invention realizes the quick assembling and butting of the first steel arch 11 and the second steel arch 12, and if the butting position of the first steel arch 11 and the second steel arch 12 needs to be welded and/or further connected and reinforced through other connection modes such as bolt connection and the like, in the welding and/or bolt connection process, the first steel arch 11 and the second steel arch 12 do not deviate, so that the first steel arch 11 and the second steel arch 12 are stably connected and accurately butted.

Specifically, as shown in fig. 9 and 10, and fig. 11 and 12, the steel arch 1 is made of i-steel and has a substantially arc-shaped structure. A plurality of steel arch frames 1 are spliced and butted to form a support ring so as to support the tunnel 5. The outer side surfaces of the steel arches 1 are spliced to form the outer ring surface of the supporting ring, and the inner side surfaces of the steel arches 1 are spliced to form the inner ring surface of the supporting ring. The outer side surface of the steel arch 1 is attached to the inner wall surface of the tunnel 5. The circumferential direction of the tunnel 5 is the longitudinal direction of the steel arch 1, the radial direction of the tunnel 5 is the height direction of the steel arch 1, and the axial direction of the tunnel 5 is the width direction of the steel arch 1.

As shown in fig. 3 and 6, in the embodiment of the present invention, the latch is connected to the first steel arch 11 by the spring 22, the spring 22 is arranged in a direction perpendicular to the assembling direction of the first steel arch 11 and the second steel arch 12, and the latch is abutted to the locking part by the elastic restoring force of the spring 22. When first steel bow member 11 and second steel bow member 12 are assembled, when clamping part moved to spring bolt department along assembling the direction, the spring bolt moved towards the one side of keeping away from clamping part along the perpendicular direction of the direction of assembling with first steel bow member 11 and second steel bow member 12 under clamping part's the pressure, after clamping part continued to move along assembling the direction, the spring bolt moved towards the one side that is close to clamping part along the perpendicular direction of the direction of assembling with first steel bow member 11 and second steel bow member 12 under spring 22's elastic restoring force, and then with clamping part looks butt.

Specifically, one end of the spring 22 is connected with the first steel arch 11 through the locking block 23, the locking block 23 is provided with a tension bolt 24, the tension bolt 24 is connected with the lock tongue, the spring 22 is sleeved on the tension bolt 24, one end of the spring 22 is abutted against the lock tongue, and the other end of the spring 22 is abutted against the locking block 23. By adjusting the tension bolt 24, the spring 22 can be adjusted to be in a compressed state, so that the spring 22 generates an elastic restoring force, and the direction of the elastic restoring force is perpendicular to the assembling direction of the first steel arch 11 and the second steel arch 12 and faces the buckling part, so that the spring bolt is abutted to the buckling part through the elastic restoring force of the spring 22 in the compressed state. The locking block 23 is provided with a sliding groove 231, the spring 22 is installed in the sliding groove 231, and the locking tongue is slidably connected with the sliding groove 231. Through setting up spout 231 to the guide spring bolt is along the perpendicular direction removal of the direction of assembling with first steel bow member 11 and second steel bow member 12, avoids the spring bolt to take place the skew, thereby ensures that spring bolt and clamping part are accurate to be cooperated.

As shown in fig. 4 and 8, in the embodiment of the present invention, the end surface of the latch is provided with a first guide wedge surface 25, the end surface of the latch part is provided with a second guide wedge surface 33, and the second guide wedge surface 33 is engaged with the first guide wedge surface 25. When the buckling part moves to the bolt along the assembling direction of the first steel arch 11 and the second steel arch 12, the second guide wedge surface 33 is attached to the first guide wedge surface 25 to slide, so that the buckling part is guided to continue to move along the assembling direction of the first steel arch 11 and the second steel arch 12 until the second guide wedge surface 33 slides over the first guide wedge surface 25, and the buckling part is respectively in locking fit with the bolt. Optionally, a guide groove is formed in the first guide wedge surface 25 along the assembling direction of the first steel arch 11 and the second steel arch 12, and a guide protruding strip matched with the guide groove is arranged on the second guide wedge surface 33 along the assembling direction of the first steel arch 11 and the second steel arch 12. Optionally, a guide convex strip is disposed on the first guide wedge surface 25 along the assembling direction of the first steel arch 11 and the second steel arch 12, and a guide groove matched with the guide convex strip is disposed on the second guide wedge surface 33 along the assembling direction of the first steel arch 11 and the second steel arch 12.

As shown in fig. 1 to 4 and 11, in the first embodiment of the present invention, the first steel arch 11 and the second steel arch 12 are assembled and butted along the circumferential direction of the tunnel 5 to support the tunnel 5, and the latch 21 moves relative to the latch portion 31 in the axial direction or the radial direction of the tunnel 5 to be locked and engaged with the latch portion 31. Through assembling first steel bow member 11 and second steel bow member 12 along the circumference of tunnel 5, buckle portion 31 on the messenger second steel bow member 12 moves to spring bolt 21 department along the circumference of tunnel 5, spring bolt 21 relatively buckle portion 31 simultaneously along the axial or radial movement of tunnel 5 and with buckle portion 31 locking fit, thereby carry out spacingly to the width direction or the direction of height of first steel bow member 11 and second steel bow member 12, avoid first steel bow member 11 and second steel bow member 12 along the axial or radial movement of tunnel 5, until after assembling into retaining ring 4 with many steel bow members 1, restrict each other through many steel bow members 1, can carry out spacingly to the length direction of steel bow member 1 promptly, avoid many steel bow members 1 to move along the circumference of tunnel 5.

Specifically, after the first steel arch 11 is fixed, the second steel arch 12 is clamped by the steel arch assembling machine to be assembled with the first steel arch 11 along the circumferential direction of the tunnel 5. In the first embodiment, two locking tongues 21 are oppositely arranged on the end surface of the first steel arch 11, the two locking tongues 21 are arranged along the axial direction or the radial direction of the tunnel 5, and the locking tongues 21 can move along the axial direction or the radial direction of the tunnel 5 to be locked and matched with the buckling part 31. The first steel arch 11 and the second steel arch 12 are assembled along the circumferential direction of the tunnel 5, so that the buckling part 31 on the second steel arch 12 is inserted between the two lock tongues 21 on the first steel arch 11 along the circumferential direction of the tunnel 5, and the two lock tongues 21 relatively move along the axial direction or the radial direction of the tunnel 5 to be locked and matched with the buckling part 31. Preferably, the two locking tongues 21 are arranged along the axial direction of the tunnel 5, so as to prevent the first steel arch 11 and the second steel arch 12 from moving relatively in the axial direction of the tunnel 5. Optionally, two locking tongues 21 are arranged radially along tunnel 5. Optionally, the end surface of the first steel arch 11 is provided with two sets of bolts 21 arranged oppositely, one set of two bolts 21 are arranged along the axial direction of the tunnel 5, and the other set of two bolts 21 are arranged along the radial direction of the tunnel 5, so as to be simultaneously in locking fit with the buckling part 31, and limit the width direction and the height direction of the first steel arch 11.

As shown in fig. 2, an installation groove 271 is provided on an end surface of the first steel arch 11, and the two lock tongues 21 are respectively installed on two opposite groove walls in the installation groove 271. Specifically, four limiting plates 27 are arranged on the end face of the first steel arch 11, the four limiting plates 27 enclose to form a mounting groove 271, the two lock tongues 21 are respectively mounted on the inner side faces of the two limiting plates 27 which are arranged oppositely, and the end faces of the four limiting plates 27 are attached to the end face of the second steel arch 12. In the first embodiment, the lock tongue 21 and the buckling portion 31 are locked and matched to assemble the plurality of steel arches 1 into the supporting ring 4, so that the limiting plate 27 on the first steel arch 11 abuts against the end surface of the second steel arch 12, and the limiting plate 27 on the first steel arch 11 abuts against the end surface of the second steel arch 12 for limiting, so that the first steel arch 11 and the second steel arch 12 cannot move relative to each other in the circumferential direction, the axial direction and the radial direction of the tunnel 5, and therefore, connection and reinforcement through connection modes such as welding or bolt connection are not needed. Optionally, a positioning boss matched with the notch of the mounting groove 271 is arranged on the end face of the second steel arch frame 12, the fastening portion 31 is installed on the positioning boss, and is matched with the mounting groove 271 through the positioning boss, so that the fastening portion 31 is accurately inserted between the two lock tongues 21, and the height direction and the length direction of the first steel arch frame 11 and the second steel arch frame 12 can be limited.

As shown in fig. 1 and 4, the fastening structure 3 includes a connecting portion 32, the connecting portion 32 is connected to an end surface of the second steel arch 12, two fastening portions 31 are symmetrically disposed on the connecting portion 32, the connecting portion 32 is inserted between the two lock tongues 21 along the circumferential direction of the tunnel 5, and the two fastening portions 31 are respectively in locking engagement with the two lock tongues 21. Two buckling parts 31 are installed on the end surface of the second steel arch 12 through a connecting part 32, so that the two buckling parts 31 are simultaneously and respectively in locking fit with two lock tongues 21. Optionally, the two lock tongues 21 are oppositely arranged on the end surface of the first steel arch 11 along the axial direction of the tunnel 5, and the two lock tongues 21 are oppositely arranged on the end surface of the first steel arch 11 along the radial direction of the tunnel 5. Four buckling parts 31 are arranged on the connecting part 32. The four catches 31 are in locking engagement with the four tongues 21, respectively, so as to limit the axial and radial movement of the catch arrangement 3 along the tunnel 5.

Specifically, as shown in fig. 2 and 3, in the first embodiment, the locking tongue 21 is connected to the locking block 23 by at least two tie bolts 24 arranged in the axial direction of the tunnel 5. At least two springs 22 are respectively sleeved on at least two tension bolts 24, and two ends of the springs 22 respectively prop against the lock tongue 21 and the locking block 23. By adjusting the tightening bolt 24, the spring 22 is adjusted to a compressed state, so that the spring 22 generates an elastic restoring force, and the direction of the elastic restoring force is parallel to the axial direction of the tunnel 5 and toward the catching portion 31. The latch bolt 21 moves toward the latch part 31 in the axial direction of the tunnel 5 under the elastic restoring force of the at least two springs 22, and is locked and engaged with the latch part 31. Through setting up two at least springs 22 and promoting spring bolt 21 and buckle portion 31 locking cooperation for the spring bolt 21 atress is more even, and the locking force between spring bolt 21 and the buckle portion 31 is bigger, and first steel bow member 11 and second steel bow member 12 are assembled and are docked more firmly. At least two springs 22 are a set, two lock tongues 21 are respectively arranged on the end surface of the first steel arch 11 relatively through a set of springs 22 and a locking block 23, the directions of elastic restoring forces of the two sets of springs 22 are opposite and face towards the buckling part 31, and therefore the two buckling parts 31 are locked and fixed between the two lock tongues 21 through the elastic restoring forces of the two sets of springs 22.

As shown in fig. 5 to 8 and 12, in the second embodiment of the present invention, the first steel arch 11 and the second steel arch 12 are assembled and butted along the radial direction of the tunnel 5 to support the tunnel 5, and the latch bolt 21 ' moves relative to the latch part 31 ' along the circumferential direction of the tunnel 5 to be locked and engaged with the latch part 31 '. Firstly fixing a first steel arch 11, then splicing a second steel arch 12 with the first steel arch 11 along the radial direction of a tunnel 5, wherein the end surface of the second steel arch 12 is attached to the end surface of the first steel arch 11 along the radial direction of the tunnel 5 until a buckling part 31 ' on the second steel arch 12 moves to a bolt 21 ' along the radial direction of the tunnel 5, and simultaneously, the bolt 21 ' moves along the circumferential direction of the tunnel 5 relative to the buckling part 31 ' and is in locking fit with the buckling part 31 ', so that the height direction of the second steel arch 12 is limited, the second steel arch 12 is prevented from sliding downwards, and then the second steel arch 12 and the first steel arch 11 are fixedly connected through connection modes such as welding and/or bolt connection.

Specifically, after the first steel arch 11 is fixed, the second steel arch 12 is clamped by the steel arch assembling machine to be assembled with the first steel arch 11 along the radial direction of the tunnel 5. In the second embodiment, the outer side surfaces of the first steel arch 11 and the second steel arch 12 are used for being attached to the inner wall surface of the tunnel 5. The bolt 21 ' is installed on the inner side surface of the first steel arch 11, and the bolt 21 ' can extend out of the end surface of the first steel arch 11 along the circumferential direction of the tunnel 5 to be matched with the buckling part 31 ' in a locking way. As shown in fig. 5 and 6, a limiting block 26 is installed on the inner side surface of the first steel arch 11, a limiting groove 261 is formed in the limiting block 26, the locking tongue 21 ' moves in the limiting groove 261 along the circumferential direction of the tunnel 5, and the buckling portion 31 ' is inserted in the limiting groove 261 along the radial direction of the tunnel 5 and is in locking fit with the locking tongue 21 '. The buckling part 31 'is connected with the inner side surface of the second steel arch 12 through the connecting part 32, the buckling part 31' is arranged close to the end part of the second steel arch 12, the connecting part 32 penetrates through the limiting groove 261 along the radial direction of the tunnel 5, and the buckling part 31 'is in locking fit with the bolt 21'. By providing the limit groove 261, the locking portion 31' is limited on one hand, and the length direction and the width direction of the second steel arch 12 are limited; and on the other hand, the buckling part 31 ' is positioned, so that the buckling part 31 ' is quickly inserted into the limiting groove 261 to be matched with the bolt 21 '. Optionally, two side surfaces of the buckling part 31 'in the axial direction of the tunnel 5 are a front side surface and a rear side surface of the buckling part 31', and the front side surface and the rear side surface of the buckling part 31 'are respectively attached to two groove wall surfaces of the limiting groove 261, so that the buckling part 31' is limited to move in the axial direction of the tunnel 5. Optionally, two side surfaces of the buckling part 31 'in the axial direction of the tunnel 5 are respectively an inner side surface and an outer side surface of the buckling part 31', the inner side surface of the buckling part 31 'is matched with the lock tongue 21', and the outer side surface of the buckling part 31 'abuts against the groove bottom surface of the limiting groove 261, so that the buckling part 31' is limited to move along the circumferential direction of the tunnel 5.

Specifically, as shown in fig. 5 and 6, in the second embodiment, the locking tongue 21' is connected to the locking block 23 by at least two tie bolts 24 arranged along the circumference of the tunnel 5. At least two springs 22 are respectively sleeved on at least two tensioning bolts 24, so that two ends of the springs 22 respectively abut against the bolt 21' and the locking block 23. By adjusting the tightening bolt 24, the spring 22 is adjusted to a compressed state, so that the spring 22 generates an elastic restoring force, and the direction of the elastic restoring force is parallel to the circumferential direction of the tunnel 5 and is directed toward the catching portion 31. The latch bolt 21 ' moves toward the latch part 31 ' along the circumferential direction of the tunnel 5 under the elastic restoring force of the at least two springs 22 to be in locking engagement with the latch part 31 '. Through setting up two at least springs 22 and promoting spring bolt 21 ' and buckle portion 31 ' locking cooperation for the spring bolt 21 ' atress is more even, and the locking force between spring bolt 21 ' and the buckle portion 31 ' is bigger, and first steel bow member 11 and second steel bow member 12 assemble the butt joint more firmly.

Second embodiment

As shown in fig. 9 and 10, the invention further provides a steel arch 1, which comprises a steel arch body 13, wherein one end of the steel arch body 13 is provided with a buckle structure 3, the buckle structure 3 comprises a buckle part, the other end of the steel arch body 13 is provided with a locking structure 2, and the locking structure 2 comprises a bolt. The locking structure 2 and the buckle structure 3 are the same as the locking structure 2 and the buckle structure 3, the working principle and the beneficial effects described in the first embodiment, and are not described in detail herein. Optionally, the locking structures 2 are arranged at both ends of the steel arch body 13. Optionally, both ends of the main body of the steel arch frame 1 are provided with the buckling structures 3.

Specifically, as shown in fig. 9, in the first embodiment, two locking tongues 21 are oppositely arranged on the end surface of one end of the steel arch main body 13, and the locking part 31 is mounted on the end surface of the other end of the steel arch main body 13. The locking structure 2 and the buckle structure 3 are the same as the locking structure 2 and the buckle structure 3 described in the first embodiment, and the working principle and the beneficial effects are not described herein again.

Specifically, as shown in fig. 10, in the second embodiment, the latch 21 'and the latch portion 31' are both mounted on the inner side surface of the steel arch body 13 and are respectively disposed near both ends of the steel arch 1 body. The locking structure 2 and the buckle structure 3 are the same as the locking structure 2 and the buckle structure 3 described in the second embodiment in the first embodiment, and the working principle and the beneficial effects are not described herein again. The end faces of the two ends of the steel arch body 13 are respectively provided with a connecting plate 14, and the two connecting plates 14 are respectively provided with a plurality of connecting holes in one-to-one correspondence. Connecting plates 14 on the end surfaces of the two assembled steel arches 1 are connected through connecting pieces such as bolts, so that the two assembled steel arches 1 are connected and fixed.

Third embodiment

As shown in fig. 4, 9 and 11, the present invention further provides a method for assembling a steel arch, which is used for assembling a plurality of steel arches 1 as described in the first embodiment in the second embodiment into a ring to support a tunnel 5, and includes the following steps: the buckling part 31 on one steel arch 1 is locked between two lock tongues 21 on the other steel arch 1 along the circumferential direction of the tunnel 5, so that the two steel arches 1 are spliced and butted; and repeating the steps until the plurality of steel arch frames 1 are assembled into a ring.

Specifically, the lock tongue 21 on one steel arch 1 is locked and matched with the lock buckle part 31 on the other steel arch 1, so that the two steel arches 1 are spliced and butted until the first end of the last steel arch 1 is connected, the second end of the last steel arch 1 is not connected with the first end of the first steel arch 1, namely, an unsealed open-loop structure is formed, the steel arches 1 in the open-loop structure are folded inwards, the last steel arch 1 is in cross lap joint with the first steel arch 1, and the steel arches 1 are connected to form a tunnel with the diameter smaller than the inner diameter of the tunnel 5Form structure ofThe form is transferred to a supporting position in the tunnel 5 and is then transferredMany steel bow member 1 of shape structure struts, make the lateral surface of steel bow member 1 laminate with the internal face in tunnel 5 mutually, simultaneously hold the spring bolt 21 on the second of last steel bow member 1 and the buckling part 31 locking cooperation on the first end of first steel bow member 1, and make the terminal surface subsides of limiting plate 27 support on adjacent steel bow member 1's terminal surface, restrict each other through many steel bow members 1, thereby assemble many steel bow members 1 and connect into retaining ring 4, need not to connect through modes such as welding or bolted connection, and the efficiency of construction is improved. Optionally, end faces of the multiple steel arches 1, which are attached to each other, are welded to each other in a welding manner, so that the support ring 4 is further connected and reinforced.

Embodiment IV

As shown in fig. 8, 10 and 12, the present invention further provides a method for assembling a steel arch 1, which is used for assembling a plurality of steel arches 1 described in the second embodiment into a ring to support a tunnel 5, and includes the following steps: the buckling part 31 'on one steel arch 1 is matched with the bolt 21' on the other steel arch 1 in a locking way along the radial direction of the tunnel 5 inwards, and the end surfaces of the two steel arches 1 are jointed; connecting the jointed end surfaces of the two steel arches 1 through a connecting piece; and repeating the steps until the plurality of steel arch frames 1 are assembled into a ring.

Specifically, one steel arch 1 moves inwards along the radial direction of the tunnel 5, so that the end surface of the steel arch 1 is jointed with the end surface of the other steel arch 1, and through the locking matching of the locking structure 2 on one steel arch 1 and the buckle structure 3 on the other steel arch 1, thereby assembling and limiting the two steel arches 1, pre-tightening the two steel arches 1 through the connecting piece, namely, the two ends of two steel arches 1 are connected through the connecting piece but are not completely screwed until the first end of the last steel arch 1 is connected, while the second end of the last steel arch 1 is not connected to the first end of the first steel arch 1, namely, an unsealed open-loop structure is formed, and because the connecting pieces are not completely screwed, the steel arches 1 of the open-loop structure can be inwardly folded, so that the last steel arch 1 is in cross joint with the first steel arch 1, and the steel arches 1 are connected to form a structure with the diameter smaller than the inner diameter of the tunnel 5.Form structure ofThe form is transferred to a supporting position in the tunnel 5, where it will beThe multiple steel arches 1 with the shape structure are propped open, so that the outer side surfaces of the steel arches 1 are attached to the inner wall surface of the tunnel 5, the lock tongue 21 ' on the second end of the last steel arch 1 is in locking fit with the buckling part 31 ' on the first end of the first steel arch 1, the multiple steel arches 1 are spliced to form the support ring 4 ', the end surfaces of the multiple steel arches 1 which are attached to each other are welded and connected in a welding mode, and the support ring is supportedThe ring 4' is further connected and reinforced.

The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.