CN214787403U

CN214787403U - Width adjustable tunnel supports canopy

Info

Publication number: CN214787403U
Application number: CN202120672802.2U
Authority: CN
Inventors: 李信斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-11-19
Anticipated expiration: 2031-04-01

Abstract

The utility model discloses a tunnel supporting shed with adjustable width, which comprises a front arch, a rear arch, a forward-moving expansion device and a supporting expansion device, wherein the front arch and the rear arch have the same structure and respectively comprise more than three longitudinal beams and more than two arched beams, all the arched beams of the same arch are arranged in parallel, all the longitudinal beams of the same arch are arranged on the upper surface of the arch along the arch length direction of the arched beams, each longitudinal beam is connected with all the arched beams, and the supporting expansion device is arranged below the arch; a space is arranged between the front arch frame and the rear arch frame; one end of the forward movement telescopic device is connected with the front arch frame, and the other end of the forward movement telescopic device is connected with the rear arch frame; the arched beam comprises a first semi-arched beam and a second semi-arched beam, the first semi-arched beam and the second semi-arched beam are oppositely arranged to form the arched beam, and the upper end of the first semi-arched beam and the upper end of the second semi-arched beam are connected through a double-lug hinge seat, an ear plate extending out of the first semi-arched beam and an external connecting piece or a spring plate and a hinge, so that the arched beam is stable in structure, and the upper ends of the two semi-arched beams are not easy to damage.

Description

Width adjustable tunnel supports canopy

Technical Field

The utility model relates to an underground mining technical field, more particularly, the utility model relates to a width adjustable tunnel supports canopy.

Background

In the prior art, a shield machine is used for tunneling a project tunnel, but due to various conditions, blasting construction is mainly used in construction of mountain tunnels, and arch frames are mainly used for supporting the tunnel.

Most of the existing arch frames are composed of a plurality of arch beams, and the arch beams are generally integrally formed, the width and the supporting angle of the arch beams are fixed and cannot be adjusted along with the width of the tunnel, so that the application range of the arch frames is limited. It is also described in the literature that an arched beam is composed of two half arched beams, the upper ends of the two half arched beams are connected by a connecting piece, the connecting piece realizes that the two half arched beams contract inwards or expand outwards by a preset angle under the action of external force, the middle parts of the upper ends of the two half arched beams are provided with openings, and the connecting piece is inserted into the middle openings and then is respectively connected with the two half arched beams through pin shafts, so that the width and the supporting angle of the arched beam are adjusted. However, in practical use, the method is found to require high manufacturing precision, is very easy to cause inaccurate positioning, and finally cannot be inserted with a pin shaft; moreover, the semi-arched girder has poor integrity and low deformation resistance at the end opening, and the structure of the whole part is easily damaged at the position, so that the whole semi-arched girder is scrapped. In addition, the center of curvature of the arched beams is often not centered on the theoretical design when the arched beams are bent, which may cause the plurality of arched beams forming the arch to be non-concentric, which may cause the brackets to twist themselves and may also cause premature failure of the central joints of the arched beams.

Accordingly, there is a need for a tunnel support canopy having relatively strong, less fragile arched beams.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the ends of two half arched beams of the existing tunnel supporting shed are easy to damage, and the bending center does not cause the distortion, the premature damage and the like of the whole arch frame on the theoretical design center, the utility model innovatively provides a tunnel supporting shed with adjustable width, the connecting piece between the two half arched beams of the tunnel supporting shed increases the structural strength, improves the supporting strength, and enables the two half arched beams to rotate relatively; the connecting mode of the connecting piece and the two half arched beams is not easy to damage the upper end openings of the half arched beams, and the service life of the half arched beams is prolonged; the manufacturing precision of the connecting piece between the two half arched beams is reduced, the structure is more stable, and the integral strength of the arch frame is improved.

In order to achieve the technical purpose, the utility model discloses a tunnel supporting shed with adjustable width, which comprises a front arch frame, a rear arch frame, a forward moving expansion device and a supporting expansion device, wherein the front arch frame comprises more than three front longitudinal beams and more than two front arch beams, all the front arch beams are arranged in parallel, all the front longitudinal beams are arranged on the upper surface of the front arch frame along the arch length direction of the front arch beams, each front longitudinal beam is connected with all the front arch beams, and the supporting expansion device is arranged below the front arch frame; the rear arch comprises more than three rear longitudinal beams and more than two rear arch beams, all the rear arch beams are arranged in parallel, all the rear longitudinal beams are arranged on the upper surface of the rear arch along the arch length direction of the rear arch beams, each rear longitudinal beam is connected with all the rear arch beams, and a supporting and stretching device is arranged below the rear arch; the front longitudinal beam and the rear longitudinal beam are arranged at intervals, and a space is arranged between the front arched beam and the adjacent rear arched beam; one end of the forward movement telescopic device is connected with the forward arch frame, the other end of the forward movement telescopic device is connected with the rear arch frame, the forward arch beam and the rear arch beam respectively comprise a first half arch beam and a second half arch beam, the first half arch beam and the second half arch beam are oppositely arranged to form an arch beam, a first double-lug hinge seat is fixed at the upper end of the first half arch beam and comprises a first base and two first lug plates, the two first lug plates are arranged in parallel, the two first lug plates are vertically fixed on the first base, the first base is fixedly connected with the first half arch beam, and the two first lug plates are provided with opposite first through holes; a second double-lug hinge seat is fixed at the upper end of the second half arched beam and comprises a second base and two second lug plates, the two second lug plates are arranged in parallel and are vertically fixed on the second base, the second base is fixedly connected with the second half arched beam, and the two second lug plates are provided with opposite second through holes; the first double-lug hinge seat and the second double-lug hinge seat are hinged through a first pin shaft penetrating through the first through hole and the second through hole.

Furthermore, the first base is far away from the end face of the first lug plate and the upper end face of the first half arched beam are welded, and the second base is far away from the end face of the second lug plate and the upper end face of the second half arched beam are welded.

Furthermore, openings are formed in the middle of the upper end of the first half arched girder and the middle of the upper end of the second half arched girder, the first base is welded to the inner wall of the opening in the upper end of the first half arched girder, and the second base is welded to the inner wall of the opening in the upper end of the second half arched girder.

In order to achieve the technical purpose, the utility model discloses a tunnel supporting shed with adjustable width, which comprises a front arch frame, a rear arch frame, a forward moving expansion device and a supporting expansion device, wherein the front arch frame comprises more than three front longitudinal beams and more than two front arch beams, all the front arch beams are arranged in parallel, all the front longitudinal beams are arranged on the upper surface of the front arch frame along the arch length direction of the front arch beams, each front longitudinal beam is connected with all the front arch beams, and the supporting expansion device is arranged below the front arch frame; the rear arch comprises more than three rear longitudinal beams and more than two rear arch beams, all the rear arch beams are arranged in parallel, all the rear longitudinal beams are arranged on the upper surface of the rear arch along the arch length direction of the rear arch beams, each rear longitudinal beam is connected with all the rear arch beams, and a supporting and stretching device is arranged below the rear arch; the front longitudinal beam and the rear longitudinal beam are arranged at intervals, and a space is arranged between the front arched beam and the adjacent rear arched beam; one end of the forward movement telescopic device is connected with the front arch frame, the other end of the forward movement telescopic device is connected with the rear arch frame, the front arch beam and the rear arch beam respectively comprise a first half arch beam and a second half arch beam, the first half arch beam and the second half arch beam are oppositely arranged to form an arch beam, a first front lug plate extends from the front wall of the upper end of the first half arch beam to the direction of the second half arch beam, a first rear lug plate extends from the rear wall of the upper end of the first half arch beam to the direction of the second half arch beam, opposite third through holes are formed in the first front lug plate and the first rear lug plate, a second front lug plate extends from the front wall of the upper end of the second half arch beam to the direction of the first half arch beam, a second rear lug plate extends from the rear wall of the upper end of the second half arch beam to the direction of the first half arch beam, and opposite fourth through holes are formed in the second front lug plate and the second rear lug plate, and the first half arched beam and the second half arched beam are hinged through a second pin shaft penetrating through the third through hole and the fourth through hole.

In order to achieve the technical purpose, the utility model discloses a tunnel supporting shed with adjustable width, which comprises a front arch frame, a rear arch frame, a forward moving expansion device and a supporting expansion device, wherein the front arch frame comprises more than three front longitudinal beams and more than two front arch beams, all the front arch beams are arranged in parallel, all the front longitudinal beams are arranged on the upper surface of the front arch frame along the arch length direction of the front arch beams, each front longitudinal beam is connected with all the front arch beams, and the supporting expansion device is arranged below the front arch frame; the rear arch comprises more than three rear longitudinal beams and more than two rear arch beams, all the rear arch beams are arranged in parallel, all the rear longitudinal beams are arranged on the upper surface of the rear arch along the arch length direction of the rear arch beams, each rear longitudinal beam is connected with all the rear arch beams, and a supporting and stretching device is arranged below the rear arch; the front longitudinal beam and the rear longitudinal beam are arranged at intervals, and a space is arranged between the front arched beam and the adjacent rear arched beam; antedisplacement telescoping device one end is connected the preceding bow member, the antedisplacement telescoping device other end is connected the back bow member, preceding arched girder with the back arched girder all includes first half arched girder and second half arched girder, first half arched girder with second half arched girder sets up relatively and forms the arched girder, the middle part of first half arched girder upper end is equipped with the opening, relative fifth through-hole has been seted up on antetheca and the back wall of first half arched girder upper end, the antetheca of second half arched girder upper end extends the first front ear board to first half arched girder direction, the back wall of second half arched girder extends the third back ear board to first half arched girder direction, the third front ear board with be equipped with relative sixth through-hole on the third back ear board, first half arched girder and second half arched girder are articulated through the third round pin that passes fifth through-hole and sixth through-hole.

In order to achieve the technical purpose, the utility model discloses a tunnel supporting shed with adjustable width, which comprises a front arch frame, a rear arch frame, a forward moving expansion device and a supporting expansion device, wherein the front arch frame comprises more than three front longitudinal beams and more than two front arch beams, all the front arch beams are arranged in parallel, all the front longitudinal beams are arranged on the upper surface of the front arch frame along the arch length direction of the front arch beams, each front longitudinal beam is connected with all the front arch beams, and the supporting expansion device is arranged below the front arch frame; the rear arch comprises more than three rear longitudinal beams and more than two rear arch beams, all the rear arch beams are arranged in parallel, all the rear longitudinal beams are arranged on the upper surface of the rear arch along the arch length direction of the rear arch beams, each rear longitudinal beam is connected with all the rear arch beams, and a supporting and stretching device is arranged below the rear arch; the front longitudinal beam and the rear longitudinal beam are arranged at intervals, and a space is arranged between the front arched beam and the adjacent rear arched beam; one end of the forward moving telescopic device is connected with the front arch frame, the other end of the forward moving telescopic device is connected with the rear arch frame, the front arched girder and the rear arched girder respectively comprise a first half arched girder and a second half arched girder, the first half arched girder and the second half arched girder are oppositely arranged to form the arched girder, the first half arched girder and the second half arched girder are connected through an external connecting piece, the front wall and the rear wall of the first half arched girder are provided with seventh through holes which are opposite, the front wall and the rear wall of the second half arched girder are provided with eighth through holes which are opposite, the end part of the connecting piece close to the first half arched girder is provided with a ninth through hole, a tenth through hole is arranged at the end part of the connecting piece close to the second half arched girder, the first half arched girder and the connecting piece are connected through a fourth pin shaft which passes through a seventh through hole and a ninth through hole, and the second half arched beam is connected with the connecting piece through a fifth pin shaft which passes through the eighth through hole and the tenth through hole.

Further, the connecting piece is a sleeve, an inverted U-shaped plate or two connecting plates which are opposite to each other in front and back.

Furthermore, the number of the seventh through holes on the first half arched girder and the number of the eighth through holes on the second arched girder are both multiple, the number and the position of the ninth through holes correspond to the seventh through holes, and the number and the position of the tenth through holes correspond to the eighth through holes.

Furthermore, one or more of the seventh through holes are strip-shaped holes, one or more of the eighth through holes are strip-shaped holes, and the length direction of the strip-shaped holes is the same as the length direction of the arched beam.

In order to achieve the technical purpose, the utility model discloses a tunnel supporting shed with adjustable width, which comprises a front arch frame, a rear arch frame, a forward moving expansion device and a supporting expansion device, wherein the front arch frame comprises more than three front longitudinal beams and more than two front arch beams, all the front arch beams are arranged in parallel, all the front longitudinal beams are arranged on the upper surface of the front arch frame along the arch length direction of the front arch beams, each front longitudinal beam is connected with all the front arch beams, and the supporting expansion device is arranged below the front arch frame; the rear arch comprises more than three rear longitudinal beams and more than two rear arch beams, all the rear arch beams are arranged in parallel, all the rear longitudinal beams are arranged on the upper surface of the rear arch along the arch length direction of the rear arch beams, each rear longitudinal beam is connected with all the rear arch beams, and a supporting and stretching device is arranged below the rear arch; the front longitudinal beam and the rear longitudinal beam are arranged at intervals, and a space is arranged between the front arched beam and the adjacent rear arched beam; the front arch is connected to antedisplacement telescoping device one end, the antedisplacement telescoping device other end is connected the back arch, the front arched girder with the back arched girder all includes first half arched girder and second half arched girder, first half arched girder with second half arched girder sets up relatively and forms the arched girder, the middle part of first half arched girder upper end and the middle part of second half arched girder upper end all are equipped with the opening, first half arched girder and second half arched girder pass through spring plate and hinge joint, the one end of spring plate inserts in the opening of first half arched girder, the other end of spring plate inserts in the opening of second half arched girder, the hinge joint is installed in the below of arched girder, the one end of hinge with first half arched girder fixed connection, the other end of hinge with second half arched girder fixed connection.

The utility model has the advantages that:

(1) the tunnel supporting shed with adjustable width of the utility model is hinged through two double-lug hinge seats, the double-lug hinge seats are fixedly connected with the semi-arch beam, then the two double-lug hinge seats are hinged through the pin shaft, the bending center of the arch beam is in the middle of the arch beam, the bending center of the whole arch frame is on the same straight line, and the arch frame is not easy to damage; and the base of the double-lug hinge seat can be used as a reinforcing plate of the semi-arched beam, so that structural strength is provided, and the end damage of the semi-arched beam is avoided.

(2) The utility model discloses a width adjustable tunnel supports otic placode and half arched girder integrated into one piece of canopy, it is simple to make, structural strength is high, and the end of half arched girder is not fragile.

(3) The utility model discloses a width adjustable tunnel supports connecting piece of canopy is outer connecting piece, can be sleeve, the template of falling U or two relative connecting plates, and the connecting piece passes through the round pin hub fixation with half arched girder, improves the stretching resistance of structure, and the simple installation, structural strength is high, and is not fragile half arched girder end.

(4) The utility model discloses a width adjustable tunnel supports canopy sets up the hinge in the arched beam inboard, increases the tensile ability of structure to confirm the rotation center of two half arched beams, make the center of bow member when using no longer squint, whole bow member supports intensity height, and is not fragile.

Drawings

Fig. 1 is a top view of a tunnel supporting shed with adjustable width according to an embodiment of the present invention;

fig. 2 is a side view of a tunnel supporting shed with adjustable width according to an embodiment of the present invention;

FIG. 3 is a front view of an arched beam provided by a first embodiment of the present invention;

FIG. 4 is a top view of an arched beam provided in accordance with a first embodiment of the present invention;

FIG. 5 is a front view of an arched beam provided by a second embodiment of the present invention;

FIG. 6 is a top view of an arched beam provided by a second embodiment of the present invention;

FIG. 7 is a front view of an arched beam provided by a third embodiment of the present invention;

FIG. 8 is a top view of an arched beam provided by a third embodiment of the present invention;

figure 9 is a front view of an arched beam provided by a fourth embodiment of the present invention;

figure 10 is a top view of an arched beam provided by a fourth embodiment of the present invention;

FIG. 11 is a front view of an arched beam provided by a fifth embodiment of the present invention;

figure 12 is a top view of an arched beam provided by a fifth embodiment of the present invention;

figure 13 is a front view of an arched beam provided by a sixth embodiment of the present invention;

figure 14 is a top view of an arched beam provided by a sixth embodiment of the present invention;

figure 15 is a front view of an arched beam provided in accordance with a seventh embodiment of the present invention;

figure 16 is a top view of an arched beam according to a seventh embodiment of the present invention;

figure 17 is a front view of an arched beam according to an eighth embodiment of the present invention.

In the figure, the position of the upper end of the main shaft,

1. a front arch frame; 10. a front longitudinal beam; 11. a front arched beam;

2. a rear arch frame; 20. a rear stringer; 21. a rear arched beam;

3. a forward movement telescopic device;

4. supporting the telescoping device;

5. a first half arched beam;

6. a second half arched beam;

70. a first binaural hinge mount; 71. a second double-lug hinge base; 72. a first pin shaft; 701. a first base; 702. a first ear plate; 711. a second base; 712. a second ear panel;

80. a first front ear panel; 81. a first rear ear panel; 82. a second front ear panel; 83. a second rear ear panel; 84. a second pin shaft; 85. a third front ear panel; 86. a third rear ear panel; 87. a third pin shaft; 90. a connecting member; 91. a fourth pin shaft; 92. a fifth pin shaft; 93. a spring plate; 94. and (4) a hinge.

Detailed Description

The tunnel supporting shed with adjustable width provided by the invention is explained and explained in detail below with reference to the attached drawings.

As shown in fig. 1 and 2, the present embodiment specifically discloses a tunnel supporting shed with adjustable width, which includes a front arch frame 1, a rear arch frame 2, a forward-moving expansion device 3 and a supporting expansion device 4, wherein the front arch frame 1 includes more than three front longitudinal beams 10 and more than two front arch beams 11, all the front arch beams 11 are arranged in parallel, all the front longitudinal beams 10 are arranged on the upper surface of the front arch frame 1 along the arch length direction of the front arch beams 11, each front longitudinal beam 10 is connected with all the front arch beams 11, and the supporting expansion device 4 is arranged below the front arch frame 1; the rear arch frame 2 comprises more than three rear longitudinal beams 20 and more than two rear arch beams 21, all the rear arch beams 21 are arranged in parallel, all the rear longitudinal beams 20 are arranged on the upper surface of the rear arch frame 2 along the arch length direction of the rear arch beams 21, each rear longitudinal beam 20 is connected with all the rear arch beams 21, and a supporting and stretching device 4 is arranged below the rear arch frame 2; the front longitudinal beam 10 and the rear longitudinal beam 20 are arranged at intervals, and a space is arranged between the front arched beam 11 and the adjacent rear arched beam 21; one end of the forward movement telescopic device 3 is connected with the front arch 1, the other end of the forward movement telescopic device 3 is connected with the rear arch 2, and the forward movement telescopic device 3 drives the front arch 1 to move forward.

The front arch 1 has the same structure as the rear arch 2, and the front arch 1 and the rear arch 2 are assembled together by overlapping and reassembling them in such a way that they occupy a gap between each other. In the reassembled front and rear arch frame combination, the front and rear arch frames are not fixed and independent to each other to form a body, and a certain amount of movement is left between the front and rear arch frames in the left, right, up and down directions. There is a distance in the front and rear direction, i.e. longitudinally, formed by the gap between the front and rear

arched beams

11, 21. The length of the distance is the distance that the front and the rear arch frames 2 can be pulled back and forth, and is also the required front step distance of the supporting shed.

In this embodiment, one end of the forward movement telescopic device 3 is connected with the front arched girder 11, and the other end of the forward movement telescopic device 3 is connected with the rear arched girder 21; the supporting and telescoping devices 4 are arranged below the two ends of the front arched girder 11 and the rear arched girder 21.

The forward movement telescopic device 3 may be connected to the front side member 10 at one end and to the rear side member 20 at the other end.

The utility model discloses after the equipment, preceding bow member 1 can be under the effect of 3 extensions of antedisplacement telescoping device and shortening with back bow member 2, can successively move forward by oneself for the support to the incessant power of arch tunnel top country rock. The utility model discloses a holding surface is the arch, also is suitable for the contour line to be the support of various curved tunnel working faces, and the support effect is good, uses labour saving and time saving, safe and reliable.

The front arched girder 11 and the rear arched girder 21 have the same structure, and hereinafter, the front arched girder 11 and the rear arched girder 21 are collectively referred to as arched girders. In this embodiment, as shown in fig. 3 to 6, each of the front arched girder 11 and the rear arched girder 21 includes a first half arched girder 5 and a second half arched girder 6, the first half arched girder 5 and the second half arched girder 6 are oppositely disposed to form an arched girder, a first double-ear hinge mount 70 is fixed to an upper end of the first half arched girder 5, the first double-ear hinge mount 70 includes a first base 701 and two first ear plates 702, the two first ear plates 702 are disposed in parallel, the two first ear plates 702 are vertically fixed to the first base 701, the first base 701 is fixedly connected to the first half arched girder 5, and the two first ear plates 702 are provided with opposite first through holes; a second double-lug hinge seat 71 is fixed at the upper end of the second half arch beam 6, the second double-lug hinge seat 71 comprises a second base 711 and two second lug plates 712, the two second lug plates 712 are arranged in parallel, the two second lug plates 712 are vertically fixed on the second base 711, the second base 711 is fixedly connected with the second half arch beam 6, and the two second lug plates 712 are provided with opposite second through holes; the first and second double-eared hinge seats 70 and 71 are hinged by a first pin 72 passing through the first and second through holes.

The two first ear plates and the two second ear plates can be arranged in a staggered mode, the two first ear plates can be located between the two second ear plates or the two second ear plates can be located between the two first ear plates, and the first half arched beam 5 and the second half arched beam 6 can be guaranteed to be in the same arch shape to form a complete arched beam.

In the embodiment, the two double-lug hinge seats are hinged, and the first pin shaft 72 is positioned in the middle of the arched beam, so that the bending point of the whole arch center is positioned in the center of the arch center, the arch center is not easy to twist during bending, and the supporting strength of the arch center is improved.

Specifically, as shown in fig. 3 and 4, an end surface of the first base 701, which is far away from the first lug plate 702, is welded to an upper end surface of the first half arched girder 5, and an end surface of the second base 711, which is far away from the second lug plate 712, is welded to an upper end surface of the second half arched girder 6. The first base 701 and the second base 711 are used as a head sealing plate and a reinforcing plate of the end of the half arched girder, so that the supporting strength is improved, and the damage to the end of the half arched girder is also avoided.

In another embodiment, as shown in fig. 5 and 6, the middle part of the upper end of the first half arched girder 5 and the middle part of the upper end of the second half arched girder 6 are both provided with an opening, the first base 701 is welded with the inner wall of the opening of the upper end of the first half arched girder 5, the second base 711 is welded with the inner wall of the opening of the upper end of the second half arched girder 6, and the first base 701 and the second base 711 are used as a head sealing plate and a reinforcing plate of the end of the half arched girder, so that the supporting strength is improved, and the damage of the end of the half arched girder is also avoided.

In the embodiment shown in fig. 3 to 6, the installation method is as follows: the method comprises the steps of welding the lug plate and the base well by a welding method, machining to reach the precision, machining to form the double-lug hinge seat, and aligning and welding the double-lug hinge seat with an opening at the end of the semi-arched beam. The base is equivalent to sealing the end of the semi-arched beam to form a reinforcing plate at the end of the semi-arched beam. The method is simple and easy to manufacture. The hinge method between the two semi-arched beams is changed from the previous connection point of the two pin shafts to the current connection point of the middle pin shaft, so that the precision after assembly is improved, and the product precision in use is improved. The strength of the end of the semi-arched beam is improved, and the semi-arched beam is not easy to damage.

As shown in fig. 7 and 8, the front arched girder 11 and the rear arched girder 21 of the present embodiment each include a first half arched girder 5 and a second half arched girder 6, the first half arched girder 5 and the second half arched girder 6 are oppositely disposed to form an arched girder, a first front ear plate 80 is extended from a front wall of an upper end of the first half arched girder 5 in a direction of the second half arched girder 6, a first rear ear plate 81 is extended from a rear wall of an upper end of the first half arched girder 5 in a direction of the second half arched girder 6, third through holes are oppositely formed in the first front ear plate 80 and the first rear ear plate 81, a second front ear plate 82 is extended from a front wall of an upper end of the second half arched girder 6 in a direction of the first half arched girder 5, a second rear ear plate 83 is extended from a rear wall of the second half arched girder 6 in a direction of the first half arched girder 5, fourth through holes are oppositely formed in the second front ear plate 82 and the second rear ear plate 83, and the first half arched girder 5 and the second half arched girder 6 are hinged by a second pin 84 passing through holes.

The first front ear plate 80 and the first rear ear plate 81, the second front ear plate 82 and the second rear ear plate 83 can be arranged in a staggered mode, the first front ear plate 80 and the first rear ear plate 81 can also be located between the second front ear plate 82 and the second rear ear plate 83, or the second front ear plate 82 and the second rear ear plate 83 can be located between the first front ear plate 80 and the first rear ear plate 81, as long as two half arched girders are ensured to be in the same arch shape, and a complete arched girder can be formed.

The otic placode and half arched girder integrated into one piece of this embodiment, the shaping mainboard of otic placode and half arched girder adopts same board, and structural strength is high, and the end is not fragile, makes simply the cost is lower. And the second pin shaft 84 is positioned in the middle of the arched beam, so that the structure is stable.

As shown in fig. 9 and 10, each of the front arched girder 11 and the rear arched girder 21 includes a first half arched girder 5 and a second half arched girder 6, the first half arched girder 5 and the second half arched girder 6 are oppositely disposed to form an arched girder, an opening is provided in the middle of the upper end of the first half arched girder 5, fifth through holes are provided on the front wall and the rear wall of the upper end of the first half arched girder 5, a third front ear plate 85 is extended from the front wall of the upper end of the second half arched girder 6 in the direction of the first half arched girder 5, a third rear ear plate 86 is extended from the rear wall of the second half arched girder 6 in the direction of the first half arched girder 5, sixth through holes are provided in the third front ear plate 85 and the third rear ear plate 86, and the first half arched girder 5 and the second half arched girder 6 are hinged to each other by a third pin 87 passing through the fifth through hole and the sixth through hole.

The third front ear plate 85 and the third rear ear plate 86 can be positioned between the openings of the first half arched girder 5 and inserted into the openings of the first half arched girder 5; alternatively, the third front ear plate 85 and the third rear ear plate 86 are located at the front and rear sides of the first half arched girder 5, so long as the two half arched girders are ensured to be in the same arch shape to form a complete arched girder.

The otic placode and half arched girder integrated into one piece of this embodiment, the shaping mainboard of otic placode and half arched girder adopts same board, and structural strength is high, and the end is not fragile, makes simply the cost is lower.

As shown in fig. 11 to 16, each of the front arched girder 11 and the rear arched girder 21 includes a first half arched girder 5 and a second half arched girder 6, the first half arched girder 5 and the second half arched girder 6 are oppositely disposed to form an arched girder, the first half arched girder 5 and the second half arched girder 6 are connected by an external connecting member 90, the front wall and the rear wall of the first half arched girder 5 are provided with seventh through holes, the front wall and the rear wall of the second half arched girder 6 are provided with eighth through holes, the end of the connecting member 90 close to the first half arched girder 5 is provided with a ninth through hole, the end of the connecting member 90 close to the second half arched girder 6 is provided with a tenth through hole, the first half arched girder 5 and the connecting member 90 are connected by a fourth pin 91 passing through the seventh through hole and the ninth through hole, and the second half arched girder 6 and the connecting member 90 are connected by a fifth pin 92 passing through the eighth through hole and the tenth through hole.

The mode that this embodiment adopted external connection spare, and the end of semi-arch roof beam is not fragile, and the structure is fairly simple, supports intensity height, and the machining precision reduces, is convenient for install and change.

In some embodiments, the connecting member 90 is a sleeve as shown in fig. 11 and 12, which is made of 4 plates, has the same cross-sectional shape as the half arched beams, is sleeved outside the connecting ends of the two half arched beams, and is fixed by more than 2 fifth pin shafts 92. The structure has high strength and can be used for roadways with large surrounding rock pressure.

In some embodiments, the connector 90 is an inverted U-shaped plate as shown in fig. 13 and 14 that is clipped to the end where the two semi-arched beams meet, with the opening facing downward.

In some embodiments, the connectors 90 are two front-to-back opposing connector plates, i.e., a cleat configuration, as shown in fig. 15 and 16. Although the strength is not as good as that of the sleeve, the support strength can be satisfied, and the damage to the end head is reduced. The mode is more convenient to install and is easy to install and replace in a narrow working site.

The number of the seventh through holes in the first half arched girder 5 and the number of the eighth through holes in the second arched girder are both multiple, the number and the position of the ninth through holes correspond to those of the seventh through holes, and the number and the position of the tenth through holes correspond to those of the eighth through holes. The multi-through hole is formed, and the plurality of pin shafts are connected, so that the integral tensile resistance is improved.

In some embodiments, one or more of the seventh plurality of through-holes are strip-shaped holes, one or more of the eighth plurality of through-holes are strip-shaped holes, and the length direction of the strip-shaped holes is the same as the length direction of the arched beam. The angle between the two half arched girders is convenient to adjust due to the arrangement of the strip-shaped holes.

As shown in fig. 17, each of the front arched girder 11 and the rear arched girder 21 includes a first half arched girder 5 and a second half arched girder 6, the first half arched girder 5 and the second half arched girder 6 are oppositely disposed to form an arched girder, openings are provided in both a middle portion of an upper end of the first half arched girder 5 and a middle portion of an upper end of the second half arched girder 6, the first half arched girder 5 and the second half arched girder 6 are hinged to each other by a spring plate 93 and a hinge 94, one end of the spring plate 93 is inserted into the opening of the first half arched girder 5, the other end of the spring plate 93 is inserted into the opening of the second half arched girder 6, the hinge 94 is installed below the arched girder, one end of the hinge 94 is fixedly connected to the first half arched girder 5, and the other end of the hinge 94 is fixedly connected to the second half arched girder 6. The hinge 94 is arranged outside the half arched girder to increase the tensile capacity of the structure, the rotating center of the hinge 94 is positioned in the middle of the arched girder to determine the rotating centers of the two half arched girders, so that the centers of the two half arched girders are not deviated when in use, and the whole structure is stable.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the terms "this embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and simple improvements made in the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A tunnel supporting shed with adjustable width comprises a front arch (1), a rear arch (2), a forward moving telescopic device (3) and a supporting telescopic device (4), wherein the front arch (1) comprises more than three front longitudinal beams (10) and more than two front arch beams (11), all the front arch beams (11) are arranged in parallel, all the front longitudinal beams (10) are arranged on the upper surface of the front arch (1) along the arch length direction of the front arch beams (11), each front longitudinal beam (10) is connected with all the front arch beams (11), and the supporting telescopic device (4) is arranged below the front arch (1); the rear arch (2) comprises more than three rear longitudinal beams (20) and more than two rear arch beams (21), all the rear arch beams (21) are arranged in parallel, all the rear longitudinal beams (20) are arranged on the upper surface of the rear arch (2) along the arch length direction of the rear arch beams (21), each rear longitudinal beam (20) is connected with all the rear arch beams (21), and a supporting and stretching device (4) is arranged below the rear arch (2); the front longitudinal beam (10) and the rear longitudinal beam (20) are arranged at intervals, and a space is reserved between the front arched beam (11) and the adjacent rear arched beam (21); one end of the forward movement telescopic device (3) is connected with the front arch frame (1), the other end of the forward movement telescopic device (3) is connected with the rear arch frame (2), characterized in that the front arched girder (11) and the rear arched girder (21) both comprise a first half arched girder (5) and a second half arched girder (6), the first half arched girder (5) and the second half arched girder (6) are oppositely arranged to form an arched girder, a first double-lug hinge seat (70) is fixed at the upper end of the first half arched beam (5), the first double-lug hinge base (70) comprises a first base (701) and two first lug plates (702), the two first lug plates (702) are arranged in parallel, the two first lug plates (702) are vertically fixed on the first base (701), the first base (701) is fixedly connected with the first half arched beam (5), and two first ear plates (702) are provided with opposite first through holes; a second double-lug hinge seat (71) is fixed at the upper end of the second half arched beam (6), the second double-lug hinge seat (71) comprises a second base (711) and two second lug plates (712), the two second lug plates (712) are arranged in parallel, the two second lug plates (712) are vertically fixed on the second base (711), the second base (711) is fixedly connected with the second half arched beam (6), and opposite second through holes are formed in the two second lug plates (712); the first double-lug hinge seat (70) and the second double-lug hinge seat (71) are hinged through a first pin shaft (72) penetrating through the first through hole and the second through hole.

2. The adjustable-width tunnel supporting shed as claimed in claim 1, characterized in that the end face of the first base (701) remote from the first ear plate (702) is welded to the upper end face of the first half arched girder (5), and the end face of the second base (711) remote from the second ear plate (712) is welded to the upper end face of the second half arched girder (6).

3. The tunnel supporting shed with the adjustable width as claimed in claim 1, wherein the middle part of the upper end of the first half arched girder (5) and the middle part of the upper end of the second half arched girder (6) are provided with openings, the first base (701) is welded with the inner wall of the opening of the upper end of the first half arched girder (5), and the second base (711) is welded with the inner wall of the opening of the upper end of the second half arched girder (6).

4. A tunnel supporting shed with adjustable width comprises a front arch (1), a rear arch (2), a forward moving telescopic device (3) and a supporting telescopic device (4), wherein the front arch (1) comprises more than three front longitudinal beams (10) and more than two front arch beams (11), all the front arch beams (11) are arranged in parallel, all the front longitudinal beams (10) are arranged on the upper surface of the front arch (1) along the arch length direction of the front arch beams (11), each front longitudinal beam (10) is connected with all the front arch beams (11), and the supporting telescopic device (4) is arranged below the front arch (1); the rear arch (2) comprises more than three rear longitudinal beams (20) and more than two rear arch beams (21), all the rear arch beams (21) are arranged in parallel, all the rear longitudinal beams (20) are arranged on the upper surface of the rear arch (2) along the arch length direction of the rear arch beams (21), each rear longitudinal beam (20) is connected with all the rear arch beams (21), and a supporting and stretching device (4) is arranged below the rear arch (2); the front longitudinal beam (10) and the rear longitudinal beam (20) are arranged at intervals, and a space is reserved between the front arched beam (11) and the adjacent rear arched beam (21); the front arch frame (1) is connected to antedisplacement telescoping device (3) one end, the antedisplacement telescoping device (3) other end is connected back arch frame (2), its characterized in that, preceding arched girder (11) with back arched girder (21) all include first half arched girder (5) and second half arched girder (6), first half arched girder (5) with second half arched girder (6) set up relatively and form the arched girder, first front ear plate (80) is extended to second half arched girder (6) direction to the antetheca of first half arched girder (5) upper end, first back ear plate (81) is extended to second half arched girder (6) direction to the back wall of first half arched girder (5) upper end, relative third through-hole has been seted up on first front ear plate (80) and first back ear plate (81), second front ear plate (82) is extended to first half arched girder (5) direction to the antetheca of second half arched girder (6) upper end, the rear wall of the upper end of the second half arched girder (6) extends out of a second rear ear plate (83) towards the first half arched girder (5), a relative fourth through hole is formed in the second front ear plate (82) and the second rear ear plate (83), and the first half arched girder (5) and the second half arched girder (6) are hinged through a second pin shaft (84) penetrating through the third through hole and the fourth through hole.

5. A tunnel supporting shed with adjustable width comprises a front arch (1), a rear arch (2), a forward moving telescopic device (3) and a supporting telescopic device (4), wherein the front arch (1) comprises more than three front longitudinal beams (10) and more than two front arch beams (11), all the front arch beams (11) are arranged in parallel, all the front longitudinal beams (10) are arranged on the upper surface of the front arch (1) along the arch length direction of the front arch beams (11), each front longitudinal beam (10) is connected with all the front arch beams (11), and the supporting telescopic device (4) is arranged below the front arch (1); the rear arch (2) comprises more than three rear longitudinal beams (20) and more than two rear arch beams (21), all the rear arch beams (21) are arranged in parallel, all the rear longitudinal beams (20) are arranged on the upper surface of the rear arch (2) along the arch length direction of the rear arch beams (21), each rear longitudinal beam (20) is connected with all the rear arch beams (21), and a supporting and stretching device (4) is arranged below the rear arch (2); the front longitudinal beam (10) and the rear longitudinal beam (20) are arranged at intervals, and a space is reserved between the front arched beam (11) and the adjacent rear arched beam (21); the front arch (1) is connected to antedisplacement telescoping device (3) one end, the antedisplacement telescoping device (3) other end is connected back arch (2), its characterized in that, preceding arched girder (11) with back arched girder (21) all include first half arched girder (5) and second half arched girder (6), first half arched girder (5) with second half arched girder (6) set up relatively and form the arched girder, the middle part of first half arched girder (5) upper end is equipped with the opening, seted up relative fifth through-hole on antetheca and the back wall of first half arched girder (5) upper end, antetheca of second half arched girder (6) upper end extends third front ear plate (85) to first half arched girder (5) direction, the back wall of second half arched girder (6) extends third back ear plate (86) to first half arched girder (5) direction, be equipped with relative sixth through-hole on third front ear plate (85) and third back ear plate (86), the first half arched beam (5) and the second half arched beam (6) are hinged through a third pin shaft (87) penetrating through a fifth through hole and a sixth through hole.

6. A tunnel supporting shed with adjustable width comprises a front arch (1), a rear arch (2), a forward moving telescopic device (3) and a supporting telescopic device (4), wherein the front arch (1) comprises more than three front longitudinal beams (10) and more than two front arch beams (11), all the front arch beams (11) are arranged in parallel, all the front longitudinal beams (10) are arranged on the upper surface of the front arch (1) along the arch length direction of the front arch beams (11), each front longitudinal beam (10) is connected with all the front arch beams (11), and the supporting telescopic device (4) is arranged below the front arch (1); the rear arch (2) comprises more than three rear longitudinal beams (20) and more than two rear arch beams (21), all the rear arch beams (21) are arranged in parallel, all the rear longitudinal beams (20) are arranged on the upper surface of the rear arch (2) along the arch length direction of the rear arch beams (21), each rear longitudinal beam (20) is connected with all the rear arch beams (21), and a supporting and stretching device (4) is arranged below the rear arch (2); the front longitudinal beam (10) and the rear longitudinal beam (20) are arranged at intervals, and a space is reserved between the front arched beam (11) and the adjacent rear arched beam (21); the front arch (1) is connected to antedisplacement telescoping device (3) one end, the antedisplacement telescoping device (3) other end is connected back bow (2), its characterized in that, preceding arched girder (11) with back arched girder (21) all include first half arched girder (5) and second half arched girder (6), first half arched girder (5) with second half arched girder (6) set up relatively and form the arched girder, first half arched girder (5) with second half arched girder (6) are connected through outside connecting piece (90), be equipped with relative seventh through-hole on the antetheca of first half arched girder (5) and the back wall, be equipped with relative eighth through-hole on the antetheca of second half arched girder (6) and the back wall, connecting piece (90) are close to and are equipped with the ninth through-hole on the tip of first half arched girder (5), connecting piece (90) are close to be equipped with the tenth through-hole on the tip of second half arched girder (6), the first half arched girder (5) is connected with the connecting piece (90) through a fourth pin shaft (91) penetrating through a seventh through hole and a ninth through hole, and the second half arched girder (6) is connected with the connecting piece (90) through a fifth pin shaft (92) penetrating through an eighth through hole and a tenth through hole.

7. The adjustable width tunnel support shed of claim 6, characterized in that the connecting members (90) are sleeves, inverted U-shaped plates or two front and back opposite connecting plates.

8. The adjustable width tunnel supporting shed as claimed in claim 6, characterized in that the number of the seventh through holes on the first half arched girder (5) and the number of the eighth through holes on the second half arched girder are both plural, the number and position of the ninth through holes correspond to the seventh through holes, and the number and position of the tenth through holes correspond to the eighth through holes.

9. The adjustable-width tunnel supporting shed as claimed in claim 8, wherein one or more of the seventh through holes are strip-shaped holes, one or more of the eighth through holes are strip-shaped holes, and the length direction of the strip-shaped holes is the same as the length direction of the arched beams.

10. A tunnel supporting shed with adjustable width comprises a front arch (1), a rear arch (2), a forward moving telescopic device (3) and a supporting telescopic device (4), wherein the front arch (1) comprises more than three front longitudinal beams (10) and more than two front arch beams (11), all the front arch beams (11) are arranged in parallel, all the front longitudinal beams (10) are arranged on the upper surface of the front arch (1) along the arch length direction of the front arch beams (11), each front longitudinal beam (10) is connected with all the front arch beams (11), and the supporting telescopic device (4) is arranged below the front arch (1); the rear arch (2) comprises more than three rear longitudinal beams (20) and more than two rear arch beams (21), all the rear arch beams (21) are arranged in parallel, all the rear longitudinal beams (20) are arranged on the upper surface of the rear arch (2) along the arch length direction of the rear arch beams (21), each rear longitudinal beam (20) is connected with all the rear arch beams (21), and a supporting and stretching device (4) is arranged below the rear arch (2); the front longitudinal beam (10) and the rear longitudinal beam (20) are arranged at intervals, and a space is reserved between the front arched beam (11) and the adjacent rear arched beam (21); the front arch (1) is connected to antedisplacement telescoping device (3) one end, antedisplacement telescoping device (3) other end is connected back arch (2), its characterized in that, preceding arched girder (11) with back arched girder (21) all include first half arched girder (5) and second half arched girder (6), first half arched girder (5) with second half arched girder (6) set up relatively and form the arched girder, the middle part of first half arched girder (5) upper end and the middle part of second half arched girder (6) upper end all are equipped with the opening, first half arched girder (5) and second half arched girder (6) are articulated through spring board (93) and hinge (94), the one end of spring board (93) is inserted in the opening of first half arched girder (5), the other end of spring board (93) inserts in the opening of second half arched girder (6), hinge (94) are installed in the below of arched girder, one end of the hinge (94) is fixedly connected with the first half arched beam (5), and the other end of the hinge (94) is fixedly connected with the second half arched beam (6).