CN210396740U - Full-section excavation rack for single-track railway tunnel - Google Patents

Full-section excavation rack for single-track railway tunnel Download PDF

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Publication number
CN210396740U
CN210396740U CN201920997369.2U CN201920997369U CN210396740U CN 210396740 U CN210396740 U CN 210396740U CN 201920997369 U CN201920997369 U CN 201920997369U CN 210396740 U CN210396740 U CN 210396740U
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working platform
platform
rack
railway tunnel
track railway
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CN201920997369.2U
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刘兴波
哈建波
赵宝锋
刘伟
吴相斌
晋龙凤
任勇
高子谦
陈海建
赵贵军
张磊
贾吉春
李坤
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China Railway Tunnel Group Erchu Co Ltd
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China Railway Tunnel Group Erchu Co Ltd
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Abstract

The utility model discloses a single track railway tunnel full-section excavation rack, which comprises a bottom beam, a stand column, a lateral part fixing platform, a lateral part telescopic sleeve, an upper part working platform, a middle part working platform, a front part telescopic sleeve, a middle part overturning working platform, an upper door beam, a lower door beam, a ladder stand and an escape rod, wherein the stand column is arranged on the upper part of the bottom beam, the stand column, the upper door beam and the lower door beam form a door-shaped integral structure, the lateral part of the stand column is provided with the lateral part working platform, and the upper door beam is provided with the upper part working platform; the lower door beam is provided with a middle working platform; the lower door beam and the side working platform are provided with front telescopic sleeves; a middle overturning working platform is arranged on the inner side of the upright post; the stand is provided with a ladder stand, and an escape rod is arranged between the upper working platform and the ground; the guardrail is installed to upper portion work platform, can prevent that personnel from falling, ensures operation personnel safety. The utility model discloses humanized design, section suitability are strong, safety protection measure must be done, the biggest operation space of other processes of assurance tunnel excavation.

Description

Full-section excavation rack for single-track railway tunnel
Technical Field
The utility model relates to a single line railway tunnel construction technical field, concretely relates to full section excavation rack in single line railway tunnel.
Background
The full-face tunneling method is a common tunneling mode for single-track railway tunnel drilling and blasting construction, and has the characteristics of one-time drilling and blasting, one-time excavation and forming and comprehensive propelling. The excavation operation rack is a common tool in the excavation drilling process. At present, the domestic excavation operation rack generally adopts the tailor-welding of section steel, the processing is crude and simple, and the humanization, the safety and the practicability are not high. Therefore, the method has great value and significance for researching and innovating the single-track railway tunnel full-section excavation rack.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of current excavation operation rack, provide a full section excavation rack in single line railway tunnel.
The utility model discloses a realize through following technical scheme:
a single-track railway tunnel full-section excavation rack comprises a bottom beam, a stand column, a lateral part working platform, a middle overturning working platform, a lateral part telescopic sleeve, a distribution box, a lower door beam, an upper door beam, a crawling ladder, an upper part working platform, a middle part working platform, a front part telescopic sleeve and an escape rod;
the two bottom beams are arranged in parallel, a plurality of door frames consisting of upright posts, upper door beams and lower door beams are arranged on the two bottom beams at equal intervals along the length direction of the bottom beams, and the door frames are connected through longitudinal short beams, so that a main structure part of the rack is formed;
the lateral working platform is arranged on the outer side of the upright column and comprises three layers, namely a first layer lateral working platform, a second layer lateral working platform and a third layer lateral working platform from bottom to top; furthermore, a side telescopic sleeve is arranged on each side working platform, and when the tunnel face is dug excessively, the length of the side telescopic sleeve can be adjusted to extend to the rock face;
the upper working platform is arranged on the upper door beam, and the middle working platform is arranged on the lower door beam; front telescopic sleeves are mounted on the lower door beam and each layer side working platform, and when the front telescopic sleeves are used for excavating tunnel faces, a temporary working platform is set up on the basis of the front telescopic sleeves, so that the defect of insufficient working space caused by uneven face surfaces is prevented;
the stand inboard installation middle part upset work platform, the workman punches at the face, when the powder charge, middle part upset work platform upset gets off, and when the blasting was slagging tap, need go the upset of middle part upset work platform, makes the car of slagging tap pass through smoothly in the portal.
In the above technical scheme: the bottom beam is designed into a ship-shaped structure, so that the frictional resistance between the bottom beam and the ground when the rack is moved is reduced.
In the above technical scheme: the lateral working platforms are used for drilling holes by hand-held pneumatic drills of excavation operators, and the vertical distance between each layer of lateral working platforms is 1.8-2.0m, preferably 1.9m in consideration of humanized arrangement.
In the above technical scheme: guard rails are arranged on the upper working platform and the side working platforms, so that personnel can be prevented from falling, and the safety of the operating personnel is guaranteed.
In the above technical scheme: the structure of the middle overturning working platform is as follows: the inner end of the middle overturning working platform is hinged on the upright post through a pin shaft, the outer end of the middle overturning working platform is connected with a chain block, and the overturning of the middle overturning working platform is controlled through the chain block.
In the above technical scheme: the escape rod is arranged between the upper working platform and the ground; the included angle between the escape rod and the ground is 60-90 degrees, and when a danger occurs, workers can slide to the ground along the escape rod quickly.
In the above technical scheme: the excavation rack is also provided with a distribution box which is arranged on any one side part working platform.
In the above technical scheme: the ladder stand is installed to the excavation rack, and the ladder stand is including setting up the first ladder stand that is used for connecting ground and first layer lateral part work platform in first layer lateral part work platform below, setting up the second ladder stand between first layer lateral part work platform and second layer lateral part work platform, setting up the third layer ladder stand between second layer lateral part work platform and middle part work platform and set up the fourth ladder stand between middle part work platform and upper portion work platform.
Utilize the utility model discloses a method that single line railway tunnel full-face excavation rack was under construction as follows:
step 1, construction preparation: before construction, carefully checking drilling equipment and pipeline circuits of wind, water, electricity and the like;
step 2, measuring and centering: before excavating and drilling holes, a measurer should perform measurement lofting on an excavation section, a central line and an elevation of a tunnel;
step 3, positioning an excavation rack: placing the excavation rack at a proper position, extending all the side telescopic sleeves and the front telescopic sleeves to a proper position of the rock surface of the tunnel, laying a metal expansion net, and turning down the middle turning operation platform so as to facilitate subsequent manual hole drawing, drilling and charging operations;
step 4, blast hole drawing, drilling and charging: drawing the positions of peripheral holes, bottom plate holes and digging holes of the cutting holes according to the measurement lofting; the peripheral holes, the cutting holes and the bottom plate holes are positioned by people, and the distance, the angle and the depth of blast holes meet the requirement of the blasting depth; strictly forbidding drilling residual holes in the drilling process, and timely adjusting the air supply quantity and the water supply quantity according to the drilling speed and the hardness degree of surrounding rocks;
step 5, blasting and ventilating: withdraw lateral part telescopic tube and anterior telescopic tube, the upset of middle part upset operation platform is gone up to will excavate the rack and remove the face, personnel withdraw the back and explode the face, after the sound big gun, ventilate more than 15 minutes, air quality detects up to standard and can get into.
Step 6, deslagging: in order to ensure that the slag discharging vehicle smoothly passes through the rack, the middle overturning operation platform is overturned upwards;
step 7, primary support: and (3) using a loader to hold the excavation table to the face, operating according to the step 3 so as to install the arch frame, and spraying concrete.
The utility model discloses an advantage and beneficial effect do:
the rack sets up handheld pneumatic drill drilling of multilayer lateral part work platform, upper portion work platform, middle part work platform and is used for excavating the operation personnel, and the work platform interval should be selected at 1.9m, when having guaranteed that the operation is humanized, can satisfy the operation construction space requirement again. All spread metal expansion net and install the rail guard on the platform, can prevent that personnel from falling, guarantee operation personnel safety.
The middle part upset work platform is installed to the stand inboard, adopts the round pin hub connection between middle part upset work platform and the stand, and accessible chain block prolongs the stand and makes 90 rotary motions. When the middle overturning working platform is in a horizontal position, the drilling operation requirements of excavation operators can be met. When the device is in a vertical position, the middle space is large, and the vehicle passing requirement can be met.
The utility model discloses a single track railway full-section excavation rack has the pole of fleing, when meetting danger, the workman can follow the pole of fleing slides fast to ground.
The utility model discloses a single track railway full-face excavation rack front portion and lateral part work platform have the telescopic link, can adjust platform length wantonly at the journey within range, make things convenient for manual work.
The excavation rack is installed the multilayer cat ladder, the cat ladder is arranged in rack rear portion both sides position, has both satisfied personnel and has required from top to bottom, does not invade again and occupies middle part headroom, does not influence the current demand of vehicle.
Install the guardrail on the work platform of upper portion, can prevent that personnel from falling, guarantee operation personnel safety.
Each part of the rack is connected by flanges, so that the rack is convenient to assemble, disassemble and transport, can be repeatedly used and has good economic benefit.
Drawings
Fig. 1 is a front view of a single-track railway tunnel full-section excavation rack in an embodiment of the present invention;
fig. 2 is a side view of a single-track railway tunnel full-face excavation bench in an embodiment of the present invention;
FIG. 3 is the utility model discloses a single line railway tunnel full-face excavation rack construction method.
Shown in the figure:
1: bottom beam, 2: column, 3: lateral part work platform, 4: middle part upset work platform, 5: telescopic tube, 6: block terminal, 7: lower door beam, 8: guard rail, 9: upper door beam, 10: ladder stand, 11: upper working platform, 12: middle part work platform, 13: front telescopic tube, 14: escape rod, 3-1: first-floor lateral work platform, 3-2: second-layer side working platform, 3-3: third layer side working platform, 10-1: first ladder stand, 10-2: a second ladder stand 10-3: a third ladder stand and 10-4: and a fourth ladder stand.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical field person understand the solution of the present invention better, the technical solution of the present invention is further described below with reference to the specific embodiments.
Example one
As shown in the attached drawings 1 and 2, the single-track railway tunnel full-section excavation rack comprises a bottom beam 1, an upright post 2, a lateral part working platform 3, a middle overturning working platform 4, a lateral part telescopic pipe 5, a distribution box 6, a lower door beam 7, a protective guard 8, an upper door beam 9, a ladder stand 10, an upper part working platform 11, a middle part working platform 12, a front telescopic pipe 13 and an escape rod 14. All the components are preferably made of steel materials, all the components are preferably connected in a bolt flange mode, and necessary rigidity and stability are calculated.
The base beams 1 are two in number and are arranged in parallel, the base beams are designed to be ship-shaped structures, the friction resistance between the base beams and the ground when the rack is moved is reduced, a plurality of vertical columns 2, an upper door beam 9 and a plurality of portal frames consisting of lower door beams 7 are arranged on the two base beams 1 at equal intervals along the length direction of the base beams (namely, the vertical columns 2 are arranged on each base beam 1 at equal intervals, the upper door beam 9 and the lower door beam 7 are arranged between the two vertical columns 2 with the same cross section, the upper door beam 9 and the lower door beam 7 are horizontally connected on the vertical columns, the upper door beam 9 is positioned above the lower door beam 7, the two vertical columns 2 with the same cross section, the upper door beam 9 and the lower door beam 7 form a portal frame structure), and the portal frames are connected through longitudinal short beams, so that a main structure part of the rack is formed.
The lateral working platform 3 is arranged on the outer side of the upright post 2, the lateral working platform 3 comprises three layers, namely a first layer lateral working platform 3-1, a second layer lateral working platform 3-2 and a third layer lateral working platform 3-3 from bottom to top, the lateral working platforms are used for excavating operators to drill holes by hand-held pneumatic drills, and the vertical distance between each layer of lateral working platforms is preferably about 1.9m in consideration of humanized arrangement; further, all install lateral part telescopic tube 5 on every layer lateral part work platform, when the face surpassed undermining, can adjust the length of lateral part telescopic tube 5 and reach the rock face.
The upper working platform 11 is arranged on the upper door beam 9, and the middle working platform 12 is arranged on the lower door beam 7; install anterior telescopic tube 13 on door sill 7 and every layer side work platform 3 down, when anterior telescopic tube can be used to tunnel face excavation, set up interim operation platform on the basis of anterior telescopic tube, prevent to cause the operating space not enough because face is uneven. Further, guard rails 8 are arranged on the upper working platform 11 and the side working platforms 3, so that personnel can be prevented from falling, and the safety of the operating personnel is guaranteed.
A middle overturning working platform 4 is arranged on the inner side of the upright post 2, and when workers punch holes on the tunnel face and charge powder, the middle overturning working platform 4 overturns, as shown in the attached drawing 1; when blasting slag discharging, need go up 4 upsets of middle part upset work platform, make the car of slagging tap from the portal smoothly through. Further, the structure of the middle turnover working platform 4 is as follows: the inner end of the middle overturning working platform 4 is hinged on the upright post 2 through a pin shaft, the outer end of the middle overturning working platform 4 is connected with a chain block, and the overturning of the middle overturning working platform 4 is controlled through the chain block.
The excavation rack is provided with a ladder stand 10 which comprises a first ladder stand 10-1 arranged below the first layer side working platform 3-1 and used for connecting the ground and the first layer side working platform 3-1, a second ladder stand 10-2 arranged between the first layer side working platform 3-1 and the second layer side working platform 3-2, a third layer ladder stand 10-3 arranged between the second layer side working platform 3-2 and the middle working platform 12 and a fourth ladder stand 10-4 arranged between the middle working platform 12 and the upper working platform 11.
The escape rod 14 is arranged between the upper working platform 11 and the ground; escape bar 14 and ground contained angle are 90 degrees, when meetting danger, the workman can follow escape bar 14 slides to ground fast.
Example two
As shown in fig. 3, the construction method of the present invention is specifically described:
step 1, construction preparation: before construction, the drilling equipment and the pipeline lines of wind, water, electricity and the like are carefully checked.
Step 2, measuring and centering: before the excavation and drilling, a measurer should perform measurement and lofting on the excavation section, the central line and the elevation of the tunnel.
Step 3, positioning an excavation rack: the excavation rack is placed at a proper position, all the side telescopic pipes 5 and the front telescopic pipes 13 are extended to a proper position of the rock surface of the tunnel, the metal expansion net is laid, and the middle overturning operation platform 4 is overturned so as to facilitate subsequent manual hole drawing, drilling and charging operations.
Step 4, blast hole drawing, drilling and charging: drawing the positions of peripheral holes, bottom plate holes and digging holes of the cutting holes according to the measurement lofting; the peripheral holes, the cutting holes and the bottom plate holes are positioned by people, and the distance, the angle and the depth of blast holes meet the requirement of the blasting depth; strictly forbidding drilling residual holes in the drilling process, and timely adjusting the air supply quantity and the water supply quantity according to the drilling speed and the hardness degree of surrounding rocks; the receiving, charging and initiation of the initiating explosive device must be completed by the blasting explosive device with effective blasting certificate, and the blast hole must be filled with stemming.
Step 5, blasting and ventilating: the side telescopic sleeves and the front telescopic sleeves are retracted, the middle overturning operation platform 4 overturns upwards, the excavation rack is moved away from the face, the face is exploded after personnel are evacuated, ventilation is needed after the blasting, ventilation is carried out for more than 15 minutes, and air quality detection can be carried out after reaching standards.
Step 6, deslagging: in order to lead the slag-tapping vehicle to smoothly pass through the rack, the middle overturning operation platform needs to be overturned upwards.
Step 7, primary support: and (3) using a loader to hold the excavation table to the face, operating according to the step 3 so as to install the arch frame, and spraying concrete.
EXAMPLE III
Further, the excavation rack is further provided with a distribution box 6 which is arranged on any side part working platform.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.

Claims (9)

1. The utility model provides a full section excavation rack of single track railway tunnel which characterized in that: the escape system comprises a bottom beam, a stand column, a side working platform, a middle overturning working platform, a side telescopic sleeve, a distribution box, a lower door beam, an upper working platform, a middle working platform, a front telescopic sleeve and an escape rod;
the two bottom beams are arranged in parallel, a plurality of door frames consisting of upright posts, upper door beams and lower door beams are arranged on the two bottom beams at equal intervals along the length direction of the bottom beams, and the door frames are connected through longitudinal short beams, so that a main structure part of the rack is formed;
the lateral working platform is arranged on the outer side of the upright column and comprises three layers, namely a first layer lateral working platform, a second layer lateral working platform and a third layer lateral working platform from bottom to top; furthermore, a side telescopic sleeve is arranged on each side working platform, and when the tunnel face is dug excessively, the length of the side telescopic sleeve can be adjusted to extend to the rock face;
the upper working platform is arranged on the upper door beam, and the middle working platform is arranged on the lower door beam; front telescopic sleeves are mounted on the lower door beam and each layer side working platform, and when the front telescopic sleeves are used for excavating tunnel faces, a temporary working platform is set up on the basis of the front telescopic sleeves, so that the defect of insufficient working space caused by uneven face surfaces is prevented;
the stand inboard installation middle part upset work platform, the workman punches at the face, when the powder charge, middle part upset work platform upset gets off, and when the blasting was slagging tap, need go the upset of middle part upset work platform, makes the car of slagging tap pass through smoothly in the portal.
2. The single track railway tunnel full face excavation rack of claim 1, characterized in that: the bottom beam is designed into a ship-shaped structure, so that the frictional resistance between the bottom beam and the ground when the rack is moved is reduced.
3. The single track railway tunnel full face excavation rack of claim 1, characterized in that: the upper and lower spacing of the working platforms at the side parts of each layer is 1.8-2.0 m.
4. The single track railway tunnel full face excavation rack of claim 1, characterized in that: the upper and lower spacing of each layer of lateral working platform is 1.9 m.
5. The single track railway tunnel full face excavation rack of claim 1, characterized in that: guard rails are arranged on the upper working platform and the side working platform.
6. The single track railway tunnel full face excavation rack of claim 1, characterized in that: the structure of the middle overturning working platform is as follows: the inner end of the middle overturning working platform is hinged on the upright post through a pin shaft, the outer end of the middle overturning working platform is connected with a chain block, and the overturning of the middle overturning working platform is controlled through the chain block.
7. The single track railway tunnel full face excavation rack of claim 1, characterized in that: the escape rod is arranged between the upper working platform and the ground.
8. The single track railway tunnel full face excavation rack of claim 7, characterized in that: the angle between the escape rod and the ground is 60-90 degrees.
9. The single track railway tunnel full face excavation rack of claim 1, characterized in that: the ladder stand is installed to the excavation rack, and the ladder stand is including setting up the first ladder stand that is used for connecting ground and first layer lateral part work platform in first layer lateral part work platform below, setting up the second ladder stand between first layer lateral part work platform and second layer lateral part work platform, setting up the third layer ladder stand between second layer lateral part work platform and middle part work platform and set up the fourth ladder stand between middle part work platform and upper portion work platform.
CN201920997369.2U 2019-06-28 2019-06-28 Full-section excavation rack for single-track railway tunnel Active CN210396740U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110130918A (en) * 2019-06-28 2019-08-16 中铁隧道集团二处有限公司 A kind of single-track railway tunnel full face tunneling rack and its construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110130918A (en) * 2019-06-28 2019-08-16 中铁隧道集团二处有限公司 A kind of single-track railway tunnel full face tunneling rack and its construction method

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