CN212743583U - Push-pull type movable guardrail for assembly area of large-diameter shield box culvert - Google Patents
Push-pull type movable guardrail for assembly area of large-diameter shield box culvert Download PDFInfo
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- CN212743583U CN212743583U CN202021036585.XU CN202021036585U CN212743583U CN 212743583 U CN212743583 U CN 212743583U CN 202021036585 U CN202021036585 U CN 202021036585U CN 212743583 U CN212743583 U CN 212743583U
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- support frame
- guardrail
- box culvert
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Abstract
The utility model provides a plug-type removal guardrail that is used for major diameter shield to construct box culvert to assemble region, including guardrail body, down tube, support frame, wherein, there is the one end of a plurality of support frame at the back of guardrail body through hinge connection, and the other end of support frame passes through the hinge to be connected with the crane span structure, and the support frame middle part is equipped with the jack, the one end rotatable formula of down tube is fixed on the crane span structure, and the other end can insert in the jack of support frame. The utility model can move simultaneously along with the shield tunneling machine without redundant manual operation; the inclined rod is adopted for supporting, so that the safety of pedestrians and vehicles can be stably protected; by adopting the push-pull structure, when the overhead arch block laying operation and the box culvert assembling operation are carried out, the guardrail is only required to be pushed to the bridge side, and the guardrail is pulled back after the operation is finished, so that the operation is simple, convenient and quick.
Description
Technical Field
The utility model belongs to the technical field of the shield constructs the box culvert, especially, a plug-type removal guardrail that is used for major diameter shield to construct box culvert and assembles region.
Background
The shield section line of Nanjing and Yanlu river-crossing tunnel engineering runs out of an initial well and descends with the maximum gradient of 3.982%, passes through a new river and a Yue road in sequence, and passes through the big dike of the eight diagrams at the gradient of 2.968% to the lowest point of the tunnel. Downhill path total length 1740m, box culvert height 4403mm, if there is not the guardrail in the box culvert assembly region, when section of jurisdiction car box culvert car brake is malfunctioning, have the possibility of landing, shield constructs the machine and goes up operating personnel and also have the possibility of falling simultaneously.
The method adopted in the past is to use a movable hard enclosure to enclose two sides of a box culvert, but the method has the defects that:
(1) the box culvert is assembled, and the box culvert needs to be manually carried and moved forwards;
(2) if the inverted arch block laying and box culvert assembling operation are required, the enclosure is temporarily dismantled; the installation is removed the guardrail and is influenced inverted arch piece and laid and box culvert assembly efficiency.
(3) Not firm and reliable enough, and not in line with the requirement of intrinsic safety.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a plug-type removal guardrail that is used for major diameter shield to construct box culvert and assembles the region, adopt plug-type structure, realize moving simultaneously along with the shield constructs the machine, easy and simple to handle, quick.
Realize the utility model discloses the technical solution of purpose does:
the utility model provides a plug-type removal guardrail that is used for major diameter shield to construct box culvert and assembles region, includes guardrail body, down tube, support frame, and wherein, there is the one end of a plurality of support frame at the back of guardrail body through hinge connection, and the other end of support frame passes through the hinge and is connected with the crane span structure, and the support frame middle part is equipped with the jack, the one end rotatable formula of down tube is fixed on the crane span structure, and the other end can insert in the jack of support frame.
The utility model adopts the above technical scheme to compare with prior art, have following technological effect:
1. the utility model discloses a plug-type removal guardrail that is used for major diameter shield to construct box culvert and assembles the region fixes on the crane span structure, can remove simultaneously along with the shield constructs the machine, need not unnecessary manual operation.
2. The utility model discloses a plug-type removal guardrail that is used for major diameter shield to construct box culvert and assembles region adopts the down tube to support, can stabilize protection pedestrian and vehicle safety.
3. The utility model discloses a plug-type removal guardrail that is used for major diameter shield to construct box culvert to assemble region adopts plug-type structure, when facing upward arch piece laying operation and box culvert assembly operation, only needs to push away the guardrail to the crane span structure side, pulls back again after the operation is ended, and is easy and simple to handle, quick.
Drawings
Fig. 1 is the utility model discloses a plug-type removal guardrail's for region is assembled to major diameter shield structure box culvert structure sketch map.
Reference signs mean: 1: guardrail body, 2: diagonal member, 3: a support frame.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
The utility model provides a plug-type removal guardrail that is used for major diameter shield to construct box culvert and assembles region, as shown in figure 1, including guardrail body 1, down tube 2, support frame 3, wherein, there is the one end of a plurality of support frame 3 at the back of guardrail body 1 through hinge connection, and the other end of support frame 3 passes through the hinge and is connected with the crane span structure, and support frame 3 middle part is equipped with the jack, but the one end rotary type of down tube 2 is fixed on the crane span structure, and the other end can insert in the jack of support frame 3.
In order to deal with the risk of high-altitude edge-facing operation in the box culvert assembly area, push-pull type movable guardrails are installed on two sides of the box culvert. The working principle is as follows: and fixing the push-pull type movable guardrail on the 2# bridge frame. When the operation is laid to the arch piece of facing upward and the operation is assembled to the box culvert, push away the guardrail to the crane span structure side, pull back the guardrail after the operation to support with the down tube, the protection is to the pedestrian and vehicle safety of coming and going. The push-pull type movable guardrail is fixed on the bridge and can move along with the shield tunneling machine at the same time without redundant manual operation. By adopting the push-pull structure, when the overhead arch block laying operation and the box culvert assembling operation are carried out, the guardrail is only required to be pushed to the bridge side, and the guardrail is pulled back after the operation is finished, so that the operation is simple, convenient and quick.
The foregoing is only a part of the embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements can be made without departing from the principles of the present invention, and these improvements should be regarded as the protection scope of the present invention.
Claims (1)
1. The utility model provides a plug-type removal guardrail that is used for major diameter shield to construct box culvert and assembles region, its characterized in that, includes guardrail body (1), down tube (2), support frame (3), wherein, there is the one end of a plurality of support frame (3) at the back of guardrail body (1) through hinge connection, and the other end of support frame (3) passes through the hinge and is connected with the crane span structure, and support frame (3) middle part is equipped with the jack, the one end rotatable formula of down tube (2) is fixed on the crane span structure, and the other end can insert in the jack of support frame (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021036585.XU CN212743583U (en) | 2020-06-09 | 2020-06-09 | Push-pull type movable guardrail for assembly area of large-diameter shield box culvert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021036585.XU CN212743583U (en) | 2020-06-09 | 2020-06-09 | Push-pull type movable guardrail for assembly area of large-diameter shield box culvert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212743583U true CN212743583U (en) | 2021-03-19 |
Family
ID=75007270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021036585.XU Active CN212743583U (en) | 2020-06-09 | 2020-06-09 | Push-pull type movable guardrail for assembly area of large-diameter shield box culvert |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212743583U (en) |
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2020
- 2020-06-09 CN CN202021036585.XU patent/CN212743583U/en active Active
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