CN210460700U - Folding arch frame - Google Patents
Folding arch frame Download PDFInfo
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- CN210460700U CN210460700U CN201921201478.5U CN201921201478U CN210460700U CN 210460700 U CN210460700 U CN 210460700U CN 201921201478 U CN201921201478 U CN 201921201478U CN 210460700 U CN210460700 U CN 210460700U
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Abstract
The utility model discloses a folding arch center, which comprises a top arch section, a left arch section and a right arch section; the upper end of the left arch section is hinged to the left end of the top arch section, and the upper end of the right arch section is hinged to the right end of the top arch section; when the folding arch frame is in a folding state, the lower ends of the left arch section and the right arch section are both positioned on the side surface of the top arch section, so that the lower ends of the left arch section and the right arch section are staggered with the vertical plane where the length direction of the top arch section is positioned. When this folding bow member is in fold condition, convenient transportation.
Description
Technical Field
The utility model relates to an arch centering field that tunnel construction used refers in particular to a folding arch centering.
Background
At present, in the tunnel construction process, need erect the steel bow member at the excavation rock face, current construction methods are with a plurality of arch steels fortune to the tunnel in, one section installation concatenation, whole concatenation process is all accomplished in the tunnel. The existing arch center mounting mode has the following defects: the existing arch center is heavy, and the installation of the arch center mainly depends on manual construction; the number of required workers is large, the labor intensity is high, and the efficiency is low. The existing arch center is spliced in the tunnel, the sight line in the tunnel is not good, and splicing alignment is difficult; the existing arch center is mostly connected by flanges and sleeves, and a large amount of manpower is needed for matching construction during field installation.
In order to solve the problems, the folding arch center is spliced outside a tunnel, then is folded and transported into the tunnel, and then is unfolded into an arch shape in the tunnel, so that the installation of the arch center in the tunnel is facilitated. Present folding bow member is as figure 1, and it includes top arch section 1, left arch section 2 and right arch section 3, and when the bow member was in fold condition, left arch section 2 and right arch section 3 all were folding to the hunch inboard of top arch section 1, and arch section about the long so that hold of top arch section 1 arc length of this structure, left arch section 2 and right arch section 3 are folding to the inside back of top arch section 1, and the height of whole bow member is higher, is not convenient for transport. In order to reduce the height of the folded arch, as shown in fig. 2, the top arch section is divided into a left top arch section 1-1 and a right top arch section 1-2, the left top arch section 1-1 is hinged with the right top arch section 1-2, and the hinge point is located in the middle of the whole top arch section, so that the middle of the top arch section can be moved downwards, and the height of the folded arch is further reduced. However, the structure is complex, and the fixing of the folding arch frame in the transportation process is inconvenient.
Disclosure of Invention
The utility model aims to provide a: to the problem that above-mentioned exists, provide a folding bow member, when this folding bow member is in fold condition, convenient transportation.
The utility model adopts the technical scheme as follows:
a folding arch center comprises a top arch section, a left arch section and a right arch section; the upper end of the left arch section is hinged to the left end of the top arch section, and the upper end of the right arch section is hinged to the right end of the top arch section; when the folding arch frame is in a folding state, the lower ends of the left arch section and the right arch section are both positioned on the side surface of the top arch section, so that the lower ends of the left arch section and the right arch section are staggered with the vertical plane where the length direction of the top arch section is positioned.
Because of the structure, the utility model discloses a left side encircles section and right side and encircles the section and is folding to the side of top arch section, and the arch of non-top arch section is inboard, and the length that the section was encircleed to the top like this can shorten, and does not need sufficient length to hold about the section of encircleing, also can reduce the height of folding back whole bow member simultaneously, convenient transportation. Simultaneously, due to the fact that the structure is simple, the fixing in the transportation process is convenient.
Further, when the folding arch frame is in a folding state, the lower ends of the left arch section and the right arch section are respectively positioned at different sides of the top arch section. The left arch section can be folded to the left side of the top arch section, the right arch section can be folded to the right side of the top arch section, the arch frame is convenient to fold, balance of the whole arch frame is convenient to maintain, and transportation is convenient.
Furthermore, when the folding arch frame is in a folding state, the upper ends of the left arch section and the right arch section and the left end and the right end of the top arch section are both positioned in the same vertical plane, and the lower ends of the left arch section and the right arch section are staggered with the vertical plane formed by the upper end of the left arch section, the upper end of the right arch section, the left end of the top arch section and the right end of the top arch section.
The utility model discloses a folding bow member, it is the dislocation folding to the left and right sides of top arch section about, and the upper end of controlling the arch section still is located the coplanar with the top arch section all the time, when conveniently guaranteeing that the bow member expandes like this, controls the up end of arch section and the terminal surface of controlling of top arch section and aligns.
Furthermore, the arc length of the left arch section and the right arch section is greater than one half of the arc length of the top arch section, when the folding arch is in a folding state, the lower end of the left arch section is close to the right end of the top arch section, and the lower end of the right arch section is close to the left end of the top arch section.
When the length of the arch steel is longer, the rigidity of the arch steel cannot be ensured, and the arch steel is more easily bent. Therefore, the utility model discloses a length that left side hunch section and right side hunch section were done as far as possible is a bit long, makes to encircle the steel and can take place certain buckling at folding in-process, and then can make about the upper end of hunch section and the top hunch section guarantee under the prerequisite in the coplanar, about the lower extreme of hunch section can fold to the side of top hunch section.
Furthermore, the left arch section and the right arch section are hinged at two ends of the top arch section through hinge hinges, each hinge comprises a hinge shaft and two connecting plates which are sleeved on the hinge shaft and can respectively rotate around the hinge shaft, the plate surface of one connecting plate is connected with one end surface of the top arch section, and the plate surface of the other connecting plate is connected with the upper end surface of the left arch section or the right arch section; the hinged shaft is parallel to the width direction of the folding arch center.
Furthermore, the two connecting plates are respectively provided with a hinge sleeve, the two connecting plates are rotatably arranged on the hinge shaft through the hinge sleeves, and the hinge sleeves on the two connecting plates are sleeved on different axial sections of the hinge shaft; in the axial direction of the articulated shaft, an axial clearance exists between the articulated sleeves on the two connecting plates, so that the two connecting plates can swing in the axial direction of the articulated shaft in the process of folding or unfolding the arch frame.
Due to the structure, the two connecting plates can swing in the axial direction of the hinged shaft due to the existence of the axial gap between the hinged sleeves, so that the lower ends of the left arch section and the right arch section can be folded to the left side face and the right side face of the top arch section more conveniently. Due to the existence of the axial gap, if the left and right arch sections are longer, the lower ends of the left and right arch sections swing leftwards or rightwards to a larger extent, and the left and right side surfaces of the top arch section are easier to fold.
Furthermore, the plate surfaces of the two connecting plates are respectively provided with a plurality of bolt holes corresponding to the positions; when the folding arch frame is unfolded in place, the plate surfaces of the two connecting plates are aligned with each other and matched with the bolt holes through bolts, so that the two adjacent arch sections are connected.
Furthermore, a hinged shaft between the left arch section and the top arch section is positioned at the arch inner sides of the left arch section and the top arch section; the articulated shaft between the right arch section and the top arch section is positioned at the arch inner side of the right arch section and the top arch section. Thus, the left and right arch sections can be conveniently folded towards the arch inner side direction of the top arch section, but not towards the arch outer side direction of the top arch section.
Further, the arc length of the top arch section is 5-14 m; the arc length of the left arch section and the arc length of the right arch section are 4-14 m.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses a left side encircles section and right side and encircles the section and is folding to the side of top arch section, and the length of top arch section can shorten like this, and does not need sufficient length to hold about the section of encircleing, also can reduce the height of folding back whole bow member simultaneously, convenient transportation. Simultaneously, the novel folding arch center is simple in structure and convenient to fix in the transportation process.
Drawings
FIGS. 1 and 2 are block diagrams of a prior art folding arch;
FIG. 3 is a view of the folded arch of the present invention after it has been unfolded;
fig. 4 is a front view of the folding arch of the present invention in a folded state;
fig. 5 is a perspective view of the folding arch of the present invention in a folded state;
fig. 6 is a left side view of the folding arch of the present invention in a folded state;
fig. 7 is a structural view of the hinge type hinge of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A folding arch center comprises a top arch section 1, a left arch section 2 and a right arch section 3; the upper end of the left arch section 2 is hinged to the left end of the top arch section 1, and the upper end of the right arch section 3 is hinged to the right end of the top arch section 1; the left arch section 2 and the right arch section 3 are folded towards the arch inner side direction of the top arch section 1, when the folding arch frame is in a folded state, the lower ends of the left arch section 2 and the right arch section 3 are located on the side face of the top arch section 1, and the lower ends of the left arch section 2 and the right arch section 3 are staggered with the vertical plane where the length direction of the top arch section 1 is located.
When the folding arch frame is in a folding state, the lower ends of the left arch section 2 and the right arch section 3 are respectively positioned on different sides of the top arch section 1. The left arch section 2 can be folded to the left side of the top arch section 1, and the right arch section 3 can be folded to the right side of the top arch section 1; the symmetry sets up, convenient transportation.
When the folding arch frame is in a folding state, the upper ends of the left arch section 2 and the right arch section 3 and the left end and the right end of the top arch section 1 are both positioned in the same vertical plane, and the lower ends of the left arch section 2 and the right arch section 3 are staggered with the vertical plane formed by the upper end of the left arch section 2, the upper end of the right arch section 3, the left end of the top arch section 1 and the right end of the top arch section 1. In this embodiment, the left and right arch segments are folded to the left and right sides of the top arch segment 1 in a staggered manner, and the upper ends of the left and right arch segments are still always located in the same plane as the top arch segment 1, so that when the arch center is conveniently ensured to be unfolded, the upper end surfaces of the left and right arch segments are aligned with the left and right end surfaces of the top arch segment 1, and the lower ends of the left and right arch segments are arranged on the left and right sides of the top arch segment 1 to facilitate folding transportation.
The arc length of the left arch section 2 and the arc length of the right arch section 3 are larger than one half of the arc length of the top arch section 1, when the folding arch is in a folding state, the lower end of the left arch section 2 is close to the right end of the top arch section 1, and the lower end of the right arch section 3 is close to the left end of the top arch section 1. In actual use, the arc lengths of the left arch section 2 and the right arch section 3 are as long as possible, and the longer the arch steel is, the poorer the rigidity is, so that the lower ends of the left and right arch sections can be folded to the left and right sides of the top arch section 1.
The arc length of the top arch section is 5-14 m; the arc length of the left arch section and the arc length of the right arch section are 4-14 m. The arc length of the left arch segment and the arc length of the right arch segment may be equal or unequal.
The left arch section 2 and the right arch section 3 are hinged at two ends of the top arch section 1 through hinge type hinges, each hinge type hinge comprises a hinge shaft 5 and two connecting plates 4 which are sleeved on the hinge shaft 5 and can respectively rotate around the hinge shaft 5, the plate surface of one connecting plate 4 is connected with one end surface of the top arch section 1, and the plate surface of the other connecting plate 4 is connected with the upper end surface of the left arch section 2 or the right arch section 3; the hinged shaft is parallel to the width direction of the folding arch center.
The two connecting plates 4 are respectively provided with a hinged sleeve, the two connecting plates 4 are rotatably arranged on the hinged shaft 5 through the hinged sleeves, and the hinged sleeves on the two connecting plates 4 are sleeved on different axial sections of the hinged shaft 5; in the axial direction of the articulated shaft 5, an axial clearance exists between the articulated sleeves on the two connecting plates 4, so that the two connecting plates 4 can swing in the axial direction of the articulated shaft 5 during the process of folding or unfolding the arch frame.
As shown in fig. 7, the hinge shaft 5 is sleeved with 4 hinge sleeves, wherein a first hinge sleeve i and a third hinge sleeve iii are arranged on one connecting plate 4, a second hinge sleeve ii and a fourth hinge sleeve iv are arranged on the other connecting plate 4, and on the hinge shaft 5, an axial gap exists between two adjacent hinge sleeves, so that the two adjacent hinge sleeves can slide axially, and further, the two connecting plates 4 can slightly swing along the hinge shaft. When the length of the left arch section and the right arch section is longer, the distance of the left and right swinging of the lower ends of the left arch section and the right arch section is longer, and the arch is easier to fold to the left side and the right side of the top arch section 1.
The plate surfaces of the two connecting plates 4 are also respectively provided with a plurality of bolt holes corresponding in position; when the folding arch frame is unfolded in place, the plate surfaces of the two connecting plates 4 are aligned with each other and matched with the bolt holes through bolts, so that the two adjacent arch sections are connected. As shown in fig. 6, 4 bolt holes are provided in each connecting plate 4.
A hinged shaft 5 between the left arch section 2 and the top arch section 1 is positioned at the arch inner sides of the left arch section 2 and the top arch section 1; and a hinged shaft 5 between the right arch section 3 and the top arch section 1 is positioned at the arch inner side of the right arch section 3 and the top arch section 1. The left and right arch sections can be conveniently folded towards the inner side of the top arch section 1.
The utility model discloses a folding bow member, first hinge well outside the tunnel, then fold and place on the transport vechicle and transport to the tunnel through the transport vechicle, then carry out the installation of bow member through bow member installation platform truck, bow member installation platform truck includes a main arm and two auxiliary arms, the main arm snatchs folding bow member's top arch section 1 and lifts folding bow member, after lifting to a take the altitude, left and right sides arch section is expanded naturally; when the left arch section 2 and the right arch section 3 are unfolded to a certain opening degree, the two auxiliary arm supports can extend into the arches which are not completely unfolded to assist the unfolding of the left arch section and the right arch section, and the two auxiliary arms are respectively grabbed by the left arch section and the right arch section to be unfolded towards the left side and the right side. People can stand on the auxiliary arm, the auxiliary arm moves to the hinged position of the left arch section, the right arch section and the top arch section 1, after the arch frame is unfolded, a constructor can conveniently go up a bolt in a bolt hole of the connecting plate 4, and then the unfolded arch frame is fixed.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A folding arch, characterized in that: the device comprises a top arch section (1), a left arch section (2) and a right arch section (3); the upper end of the left arch section (2) is hinged to the left end of the top arch section (1), and the upper end of the right arch section (3) is hinged to the right end of the top arch section (1); when the folding arch frame is in a folding state, the lower ends of the left arch section (2) and the right arch section (3) are both positioned on the side surface of the top arch section (1), so that the lower ends of the left arch section (2) and the right arch section (3) are staggered with the vertical plane where the top arch section (1) is in the length direction.
2. The folding arch of claim 1, wherein: when the folding arch frame is in a folding state, the lower ends of the left arch section (2) and the right arch section (3) are respectively positioned on different sides of the top arch section (1).
3. A folding arch, according to claim 1 or 2, characterised in that: when folding bow member was in fold condition, the upper end of left side hunch section (2) and right hunch section (3) all was located same vertical plane with the left and right sides both ends of top hunch section (1), the lower extreme and the left side of left side hunch section (2) and right hunch section (3) encircle the vertical plane dislocation that the upper end of section (2), the upper end of right side hunch section (3), top hunch section (1) left end and top hunch section (1) right-hand member constituted.
4. A folding arch, as set forth in claim 3, wherein: the arc length of the left arch section (2) and the arc length of the right arch section (3) are larger than one half of the arc length of the top arch section (1), when the folding arch is in a folding state, the lower end of the left arch section (2) is close to the right end of the top arch section (1), and the lower end of the right arch section (3) is close to the left end of the top arch section (1).
5. The folding arch of claim 4, wherein: the left arch section (2) and the right arch section (3) are hinged to two ends of the top arch section (1) through hinge hinges, each hinge comprises a hinge shaft (5) and two connecting plates (4) which are sleeved on the hinge shaft (5) and can rotate around the hinge shaft (5) respectively, the plate surface of one connecting plate (4) is connected with one end surface of the top arch section (1), and the plate surface of the other connecting plate (4) is connected with the upper end surface of the left arch section (2) or the right arch section (3); the hinged shaft is parallel to the width direction of the folding arch center.
6. The folding arch of claim 5, wherein: the two connecting plates (4) are respectively provided with a hinged sleeve, the two connecting plates (4) are rotatably arranged on the hinged shaft (5) through the hinged sleeves, and the hinged sleeves on the two connecting plates (4) are sleeved on different axial sections of the hinged shaft (5); in the axial direction of the articulated shaft (5), an axial clearance exists between the articulated sleeves on the two connecting plates (4), so that the two connecting plates (4) can swing in the axial direction of the articulated shaft (5) in the process of folding or unfolding the arch frame.
7. The folding arch of claim 5, wherein: the plate surfaces of the two connecting plates (4) are also respectively provided with a plurality of bolt holes corresponding in position; when the folding arch frame is unfolded in place, the plate surfaces of the two connecting plates (4) are aligned with each other and matched with the bolt holes through bolts, so that the two adjacent arch sections are connected.
8. The folding arch of claim 5, wherein: a hinged shaft (5) between the left arch section (2) and the top arch section (1) is positioned at the arch inner sides of the left arch section (2) and the top arch section (1); the articulated shaft (5) between the right arch section (3) and the top arch section (1) is positioned at the arch inner side of the right arch section (3) and the top arch section (1).
9. The folding arch of claim 1, wherein: the arc length of the top arch section (1) is 5-14 m; the arc length of the left arch section (2) and the arc length of the right arch section (3) are 4-14 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921201478.5U CN210460700U (en) | 2019-07-29 | 2019-07-29 | Folding arch frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921201478.5U CN210460700U (en) | 2019-07-29 | 2019-07-29 | Folding arch frame |
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| Publication Number | Publication Date |
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| CN210460700U true CN210460700U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921201478.5U Active CN210460700U (en) | 2019-07-29 | 2019-07-29 | Folding arch frame |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031833A (en) * | 2020-09-14 | 2020-12-04 | 银西铁路有限公司 | Tunnel construction method using folding steel arch frame net as support |
| CN113047876A (en) * | 2021-04-25 | 2021-06-29 | 湖南五新隧道智能装备股份有限公司 | Butt joint device for realizing staggered folding of adjacent arches and arch splicing method |
-
2019
- 2019-07-29 CN CN201921201478.5U patent/CN210460700U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031833A (en) * | 2020-09-14 | 2020-12-04 | 银西铁路有限公司 | Tunnel construction method using folding steel arch frame net as support |
| CN113047876A (en) * | 2021-04-25 | 2021-06-29 | 湖南五新隧道智能装备股份有限公司 | Butt joint device for realizing staggered folding of adjacent arches and arch splicing method |
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