CN110924666A - Shield tunnel walkway plate and side guardrail safety system - Google Patents
Shield tunnel walkway plate and side guardrail safety system Download PDFInfo
- Publication number
- CN110924666A CN110924666A CN201911257841.XA CN201911257841A CN110924666A CN 110924666 A CN110924666 A CN 110924666A CN 201911257841 A CN201911257841 A CN 201911257841A CN 110924666 A CN110924666 A CN 110924666A
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- Prior art keywords
- walkway plate
- plate
- layer
- walkway
- telescopic
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/08—Scaffold boards or planks
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
- E04G5/142—Railings extensible or telescopic
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The embodiment of the invention provides a safety system for a shield tunnel walkway plate and a side guardrail, which comprises: the tail end of the fixed walkway plate is provided with a lap joint vertical angle, and the head end of the innermost telescopic walkway plate is provided with a lap joint column hole; a roller sliding groove is formed in the same side of the fixed walkway plate and the telescopic walkway plate at the same height, and a plurality of rollers are arranged in the roller sliding groove; the telescopic guardrail device is formed by fixing a plurality of stretchable elastic rubber cross rods and a plurality of non-stretchable rigid plastic longitudinal rods in a crossed manner, and the lower ends of the rigid plastic longitudinal rods are independently connected with the rollers; the two ends of the elastic rubber cross bar at the uppermost part are provided with a connecting hook A and a connecting hook B; through the installation flexible guidance tape and flexible guardrail structure, drive the platform truck along with the shield tunnelling, the platform truck pulls flexible guidance tape and extends automatically, expandes when the tensile drive gyro wheel of upper portion elasticity rubber horizontal pole removes and extends whole guardrail simultaneously, guarantees that guardrail and guidance tape extend in step, the safety of guarantee pedestrian passageway below and side.
Description
Technical Field
The invention relates to the field of subway tunnel construction, in particular to a safety system for a shield tunnel walkway plate and a side guardrail.
Background
The shield method is more and more widely applied in the construction process of the urban subway tunnel at present. In the shield construction process, the tail part of the trolley is dragged by the shield to move, so that the trolley tail part and the existing welded pavement slab cannot be stably lapped, a section of pavement slab is commonly used in an engineering field and is paved for random lapping, the stability is poor, a side guardrail is not provided, and the safety is poor; especially, the lower part of the right side is the track of the battery car, once a pedestrian is loosened by lapping of the walkway plates or is stepped on to the empty side carelessly, the pedestrian can fall into the track, and the pedestrian can be injured by falling, if the result of the battery car is unfortunate. Meanwhile, only one section of walkway plate is used for lapping, and the distance is short, so that the walkway plate needs to be welded and extended frequently, but the walkway plate is in a disconnection state on site frequently, and adverse effects are generated on convenience and safety of pedestrians.
To sum up, the prior art exists: in the urban subway tunnel construction process, the trolley tail and the existing welding completion walkway plates cannot be stably lapped, and the side guardrail is not provided, so that the safety is poor.
Disclosure of Invention
In order to solve the above problems, embodiments of the present invention provide a safety system for a shield tunnel walkway plate and a side guardrail, and an object of the present invention is to provide a shield tunnel walkway plate and a side guardrail with high stability, side guardrail and high safety.
In order to achieve the above object, an embodiment of the present invention provides a shield tunnel walkway plate and side fence safety system, which is applied to construction of an urban subway shield tunnel, and includes:
the track plate device is of a jacket layer structure, the outmost layer is a fixed track plate, the inner layer is a telescopic track plate, the telescopic track plate on the inner layer is telescopically received into the track plate on the outer layer through an inner sliding groove, the tail end of the fixed track plate is provided with a lap joint vertical angle, and the head end of the telescopic track plate on the innermost layer is provided with a lap joint column hole;
the fixed walkway plate and the telescopic walkway plate are provided with roller wheel chutes at the same side and at the same height, and a plurality of roller wheels are arranged in the roller wheel chutes;
the telescopic guardrail device is formed by fixing a plurality of stretchable elastic rubber cross rods and a plurality of non-stretchable rigid plastic longitudinal rods in a crossed manner, and the lower end of one rigid plastic longitudinal rod is independently connected with one roller;
the two ends of the elastic rubber cross bar at the uppermost part are provided with a connecting hook A and a connecting hook B.
Preferably, the number of jacket layers of the walkway plate arrangement is at least 2.
Preferably, the jacket layer quantity of the walkway plate device is set to 3 layers, the walkway plate on the 1 st layer is a fixed walkway plate, the walkway plates on the 2 nd layer and the 3 rd layer are telescopic walkway plates, the depth of the inner chute of the fixed walkway plate on the 1 st layer is greater than the depth of the inner chute of the telescopic walkway plate on the 2 nd layer is greater than the depth of the inner chute of the telescopic walkway plate on the 3 rd layer.
Preferably, the roller chute specifically includes:
when the telescopic walkway plates move freely, the open end of the roller chute of each outer walkway plate is positioned outside the head end of the walkway plate, and the open end is connected with the roller chute of the inner walkway plate.
Preferably, the telescopic barrier device comprises:
the stress sensor is arranged on the connecting hook A or the connecting hook B and is connected with the PLC system.
Preferably, the PLC system receives a tension value sent by the stress sensor, and when the tension value exceeds a safety tension value preset by the PLC system, the PLC system displays a tension value early warning prompt.
Preferably, the safety pull value is:
synchronously stretching the walkway plate device and the elastic rubber cross rod, recording a tension value displayed by the stress sensor on the elastic rubber cross rod when the walkway plate device is extended to 90% of the total length of the walkway plate device, and setting the tension value as a safe tension value in the PLC system.
The technical scheme has the following beneficial effects: according to the invention, by installing the telescopic walkway plate and the telescopic guardrail structure, the trolley is driven along with shield tunneling, the trolley pulls the telescopic walkway plate to automatically extend, the upper elastic rubber cross rod stretches to drive the roller to move and simultaneously expand and extend the whole guardrail, the synchronous extension of the guardrail and the walkway plate is ensured, the safety of the lower part and the side part of a pedestrian passageway is ensured, meanwhile, the PLC system displays the early warning of the tension value, the retractable walkway plate is about to enter the limit, the walkway plate and the side guardrail safety protection system are translated, and the vacated space is formed by welding the conventional walkway plate and the guardrail through the same operation of workers.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a shield tunnel walkway plate and side rail safety system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a walkway plate installation according to an embodiment of the invention;
FIG. 3 is a schematic diagram of the application of the embodiment of the invention in the construction process of urban subway tunnels;
fig. 4 is a schematic view of the walkway plate, according to the embodiment of the invention, when retracted.
Reference numbers in the figures: 1-layer 1 walkway plate, 2-layer 2 walkway plate, 3-layer 3 walkway plate, 4-lap vertical angle, 5-lap column hole, 6-roller runner, 7-roller, 8-connection hook A, 9-connection hook B, 10 stress sensor, 11-elastic rubber cross bar, 12-rigid plastic longitudinal bar, 13-walkway plate and side guardrail safety system, 14-existing welded walkway plate, 15-urban subway tunnel segment, 16-trolley track, 17-trolley.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic view of a shield tunnel walkway plate and side guard rail safety system according to an embodiment of the present invention; fig. 2 is a schematic view of a retractable walkway plate system according to an embodiment of the present invention.
As shown in fig. 1 and 2, a shield tunnel walkway plate and side guard rail safety system according to an embodiment of the present invention is applied to the construction of a shield tunnel of an urban subway, and includes:
the track plate device is of a jacket layer structure, the outmost layer is a fixed track plate, the inner layer is a telescopic track plate, the telescopic track plate on the inner layer is telescopically received into the track plate on the outer layer through an inner sliding groove, the tail end of the fixed track plate is provided with a lap joint vertical angle 4, and the head end of the telescopic track plate on the innermost layer is provided with a lap joint column hole 5;
a roller sliding chute 6 is arranged at the same side of the fixed walkway plate and the telescopic walkway plate at the same height, and a plurality of rollers 7 are arranged in the roller sliding chute 6;
the telescopic guardrail device is formed by fixing a plurality of stretchable elastic rubber cross rods 11 and a plurality of non-stretchable rigid plastic longitudinal rods 12 in a crossed manner, and the lower end of one rigid plastic longitudinal rod 12 is independently connected with one roller 7;
both ends of the uppermost elastic rubber rail are provided with a connection hook A8 and a connection hook B9.
Preferably, the number of jacket layers of the walkway plate arrangement is at least 2.
Preferably, the jacket layer quantity of the walkway plate device sets up to 3 layers, and 1 st layer walkway plate 1 is fixed walkway plate, and 2 nd layer walkway plate 2 and 3 rd layer walkway plate 3 are flexible walkway plates, the inside spout degree of depth of the fixed walkway plate of 1 st layer > the inside spout degree of depth of the flexible walkway plate of 2 nd layer > the inside spout degree of depth of the flexible walkway plate of 3 rd layer.
Preferably, the roller chute 6 specifically includes:
as shown in fig. 4, the roller sliding grooves 6 are formed by clamping the rollers 7 up and down to realize free movement of the rollers 7, the roller sliding groove 6 depth of the 1 st-layer walkway plate 1 is greater than the roller sliding groove 6 depth of the 2 nd-layer walkway plate 2 is greater than the roller sliding groove 6 depth of the 3 rd-layer walkway plate 3, and by using the difference characteristic of the chute depths of the walkway plates, when the 2 nd-layer walkway plate and the 3 rd-layer walkway plate are taken in the 1 st-layer walkway plate 1, the sliding groove depth of the 1 st-layer walkway plate 1 is large, and when the 2 nd-layer walkway plate and the 3 rd-layer walkway plate are taken in, the three sliding grooves are located at a uniform horizontal position, but the depths are different, and free movement of the rollers 7 on the roller sliding grooves 6 of the 1 st.
Preferably, the telescopic barrier device comprises:
a stress sensor 10 provided on the connection hook A8 or the connection hook B9, the stress sensor 10 being connected to the PLC system.
Preferably, the PLC system receives the tension value sent by the stress sensor 10, and when the tension value exceeds a safety tension value preset by the PLC system, the PLC system displays a tension value warning prompt.
Preferably, the safety pull value is:
synchronously stretching the walkway plate device and the elastic rubber cross rod, recording a tension value displayed by the stress sensor on the elastic rubber cross rod when the walkway plate device is extended to 90% of the total length of the walkway plate device, and setting the tension value as a safe tension value in the PLC system. One embodiment of the present invention is as follows:
design of system architecture
As in fig. 3, wherein: 13 is the guidance tape and side guardrail safety coefficient, 14 is existing welding guidance tape, 15 is the city subway tunnel section of jurisdiction, 16 is the platform truck track, 17 is the platform truck, connects existing welding guidance tape and its guardrail on guidance tape and side guardrail safety coefficient left side, and the right side is connected the 17 afterbody of platform truck, and this system comprises flexible guidance tape and flexible guardrail two parts, and length can combine the actual condition setting in scene.
As shown in fig. 1, the left side connection hook A8 of the guardrail in the telescopic guardrail structure system is connected with the existing guardrail, and the right side connection hook B9 is connected with the tail part of the trolley 17; the guardrail is formed by fixing a stretchable elastic rubber cross rod 11 and a non-stretchable rigid plastic longitudinal rod 12 in a crossed manner, the lower part of the rigid plastic longitudinal rod 12 is connected with a roller 7, and the elastic rubber cross rod 11 is pulled by a trolley 17 to deform and extend, so that the side guardrail is unfolded along the sliding groove based on the roller; meanwhile, an automatic stress sensor 10 sending device is arranged on the elastic rubber cross bar 11 where the right connecting hook B9 is located, and stress of the elastic rubber cross bar 10 is transmitted to a PLC system.
As shown in fig. 2, the left lap vertical angle 4 of the telescopic walkway plate structure is used for being fixedly embedded on the left existing walkway plate, and the right lap hole column 5 is used for being embedded on the fixed column of the trolley 17, so that the walkway plate is stably connected with the existing walkway plate and the tail of the trolley 17; the jacket layer quantity of walk the guidance tape device sets up to 3 layers, and 1 st layer walks guidance tape 1 and is fixed for walking the guidance tape, and 2 nd layer walks guidance tape 2 and 3 rd layer and walks guidance tape 3 for flexible guidance tape, the fixed inside spout degree of depth of walking the guidance tape on 1 st layer > the flexible inside spout degree of depth of walking the guidance tape on 2 nd layer > the flexible inside spout degree of depth of walking the guidance tape on 3 rd layer > the flexible guidance tape on 3 rd layer to guarantee no matter what kind of flexible state is kept to three guidance tape, arrange can freely remove all the time at gyro wheel 7 of 6 inside rolling chutes.
The working principle of the system of the invention is as follows:
and testing the tensile force value displayed by the PLC system when the telescopic walkway plate system is extended to 90% of the total length, taking the tensile force value as a safety value, and automatically prompting to start the PLC system once the tensile force value is exceeded.
The installation is flexible pavement board and flexible guardrail structure, drives platform truck 17 along with the shield tunnelling, and platform truck 17 pulls flexible pavement board and extends automatically, expandes when the tensile drive gyro wheel of upper portion elasticity rubber horizontal pole removes and extends whole guardrail simultaneously, guarantees that guardrail and pavement board extend in step, the safety of guarantee pedestrian passageway below and side.
The PLC system displays the early warning of the tension value, the walkway plate stretches to be close to the limit, the walkway plate and the side guardrail safety protection system are translated, and the vacated space is formed by welding the conventional walkway plate and the guardrail through the same operation of workers.
It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary systems. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying system claims present elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy presented.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a shield tunnel guidance tape and side guardrail safety coefficient, its characterized in that, shield tunnel guidance tape and side guardrail safety coefficient are applied to city subway shield tunnel's construction, the system includes:
the track plate device is of a jacket layer structure, the outmost layer is a fixed track plate, the inner layer is a telescopic track plate, the telescopic track plate on the inner layer is telescopically received into the track plate on the outer layer through an inner sliding groove, the tail end of the fixed track plate is provided with a lap joint vertical angle, and the head end of the telescopic track plate on the innermost layer is provided with a lap joint column hole;
the fixed walkway plate and the telescopic walkway plate are provided with roller wheel chutes at the same side and at the same height, and a plurality of roller wheels are arranged in the roller wheel chutes;
the telescopic guardrail device is formed by fixing a plurality of stretchable elastic rubber cross rods and a plurality of non-stretchable rigid plastic longitudinal rods in a crossed manner, and the lower end of one rigid plastic longitudinal rod is independently connected with one roller;
the two ends of the elastic rubber cross bar at the uppermost part are provided with a connecting hook A and a connecting hook B.
2. The shield tunnel walkway plate and side rail safety system of claim 1, wherein the number of jacket layers of the walkway plate assembly is at least 2.
3. The shield tunnel walkway plate and side rail safety system of claim 1, wherein the number of jacket layers of the walkway plate set is set to 3 layers, the walkway plate at layer 1 is a fixed walkway plate, the walkway plates at layers 2 and 3 are telescopic walkway plates, and the depth of the inner chute of the fixed walkway plate at layer 1 > the depth of the inner chute of the telescopic walkway plate at layer 2 > the depth of the inner chute of the telescopic walkway plate at layer 3.
4. The shield tunnel walkway plate and side rail safety system of claim 1, wherein the roller chute specifically includes:
the roller sliding groove realizes the free movement of the roller by clamping the roller up and down, the roller sliding groove depth of the 1 st layer walkway plate is more than the roller sliding groove depth of the 2 nd layer walkway plate is more than the roller sliding groove depth of the 3 rd layer walkway plate.
5. The shield tunnel walkway plate and side rail safety system of claim 4, wherein the telescopic fence apparatus includes:
the stress sensor is arranged on the connecting hook A or the connecting hook B and is connected with the PLC system.
6. The shield tunnel walkway plate and side rail safety system of claim 5, wherein the PLC system receives a tension value sent by the stress sensor, and when the tension value exceeds a safety tension value preset by the PLC system, the PLC system displays a tension value warning prompt.
7. The shield tunnel walkway plate and side rail safety system of claim 6, wherein the safe pull force values are:
synchronously stretching the walkway plate device and the elastic rubber cross rod, recording a tension value displayed by the stress sensor on the elastic rubber cross rod when the walkway plate device is extended to 90% of the total length of the walkway plate device, and setting the tension value as a safe tension value in the PLC system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911257841.XA CN110924666A (en) | 2019-12-10 | 2019-12-10 | Shield tunnel walkway plate and side guardrail safety system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911257841.XA CN110924666A (en) | 2019-12-10 | 2019-12-10 | Shield tunnel walkway plate and side guardrail safety system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110924666A true CN110924666A (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911257841.XA Pending CN110924666A (en) | 2019-12-10 | 2019-12-10 | Shield tunnel walkway plate and side guardrail safety system |
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| CN (1) | CN110924666A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535859A (en) * | 2020-05-09 | 2020-08-14 | 中建八局轨道交通建设有限公司 | Connecting device for trolley and walkway plate of shield machine |
-
2019
- 2019-12-10 CN CN201911257841.XA patent/CN110924666A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535859A (en) * | 2020-05-09 | 2020-08-14 | 中建八局轨道交通建设有限公司 | Connecting device for trolley and walkway plate of shield machine |
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