阅读说明：本技术 一种用于隧道工程施工的安全防护装置 (Safety protection device for tunnel engineering construction ) 是由 车明星 于 2021-08-25 设计创作，主要内容包括：本申请公开了一种用于隧道工程施工的安全防护装置,包括控制单元、防护外壳、人员拖拽组件和安全保障组件；防护外壳的主体为半球形,内部空心,用于存储生存物资并容纳避难人员；防护外壳上设置有多个出入口,出入口上定位有通道封闭板,常态为打开状态；人员拖拽组件包括拖拽卷扬、拖拽绳、拖拽绳拼接组件、绳头定位组件和触发开关；拖拽卷扬定位在防护外壳的内部；拖拽卷扬用于收放拖拽绳,拖拽绳远离拖拽卷扬一端定位有绳头定位组件；拖拽绳的数量为多根,每根拖拽绳均由多根绳体通过拖拽绳拼接组件拼接而成,触发开关用于控制拖拽卷扬的运行；绳头定位组件用于将拼接绳固定在施工人员上；安全保障组件包括安全气囊。(The application discloses a safety protection device for tunnel engineering construction, which comprises a control unit, a protection shell, a personnel dragging assembly and a safety guarantee assembly; the main body of the protective shell is hemispherical, is hollow inside and is used for storing living materials and accommodating refugees; the protective shell is provided with a plurality of entrances and exits, and a channel closing plate is positioned on the entrances and exits and is in an open state in a normal state; the personnel dragging component comprises a dragging winch, a dragging rope splicing component, a rope head positioning component and a trigger switch; dragging and hoisting to be positioned inside the protective shell; the dragging winch is used for retracting and releasing a dragging rope, and a rope head positioning assembly is positioned at one end, far away from the dragging winch, of the dragging rope; the number of the dragging ropes is multiple, each dragging rope is formed by splicing multiple rope bodies through dragging rope splicing assemblies, and the trigger switch is used for controlling the operation of dragging and hoisting; the rope head positioning assembly is used for fixing the splicing rope on a constructor; the safety and security assembly includes an airbag.)

1. A safety protection device for tunnel engineering construction comprises a control unit, and is characterized by further comprising a protection shell, a personnel dragging assembly and a safety guarantee assembly;

the main body of the protective shell is hemispherical, the interior of the protective shell is hollow, and the protective shell is used for storing living materials and accommodating refugees;

the protective shell is provided with a plurality of entrances and exits, and a channel closing plate is positioned on each entrance and exit and used for closing the entrances and exits and is in an open state in a normal state;

the personnel dragging component comprises a dragging winch, a dragging rope splicing component, a rope head positioning component and a trigger switch; the dragging winch is positioned in the protective shell, and each access corresponds to one dragging winch;

the dragging winch is used for retracting the dragging rope, and a rope end positioning component is positioned at one end of the dragging rope, which is far away from the dragging winch; the number of the dragging ropes is multiple, each dragging rope is formed by splicing multiple rope bodies through the dragging rope splicing assembly, and the trigger switch is used for controlling the operation of dragging and hoisting;

the rope head positioning assembly is used for fixing the splicing rope on a constructor;

the safety guarantee assembly comprises an air bag which is positioned on the rope head positioning assembly and used for guaranteeing that limbs of constructors are not greatly damaged in the dragging process.

2. The safety shield apparatus for tunneling construction according to claim 1, further comprising a door access cushioning assembly;

the door entering buffering assembly is positioned on the access opening;

the door entering buffering assembly comprises a buffering plate and folding elastic cloth;

the buffer board is plate-shaped and is fixed on the access opening through the folding elastic cloth, the folding elastic cloth is normally folded, the dragging rope penetrates through the buffer board, when a constructor is dragged to contact the buffer board, the folding elastic cloth cancels the folding state and generates elastic deformation due to stress, and the constructor is dragged into the protective shell through the access opening.

3. A safety shield apparatus for use in tunneling construction according to claim 1, wherein said shield enclosure includes a top cover, an annular support wall, and a floor;

the top cover is positioned right above the annular supporting wall and used for preventing falling objects from falling into the protective shell;

the annular supporting wall is annular and plays roles of supporting the top cover and preventing soil and stones from entering the protective shell; the bottom plate is circular and is positioned at the bottom of the annular supporting wall;

the inside location of protective housing has puts the thing subassembly for place the survivorship material.

4. The safety shield apparatus for tunneling construction according to claim 3, further comprising a transfer assembly; the transfer component comprises a supporting wheel assembly and a supporting wheel arrangement hole;

the supporting wheel assembly is a universal wheel; the supporting wheel placing holes are formed in the bottom of the bottom plate, the number of the supporting wheel placing holes is three or more, and the supporting wheel placing holes are used for positioning the supporting wheel assemblies.

5. A safety shield apparatus for tunnel construction according to claim 3 or claim 4, further comprising a support assembly, said support assembly including a central support post and a canopy jacking assembly;

the supporting component plays a role in supporting the top cover;

the central support column is cylindrical, one end of the central support column is fixed on the top cover, the other end of the central support column is fixed on the bottom plate, and the axial direction of the central support column is the same as the height direction of the protective shell;

the top cover lifting assembly is annular, one end of the top cover lifting assembly is fixed on the bottom plate, and the other end of the top cover lifting assembly is in direct contact with the edge of the top cover.

6. A safety shield apparatus for tunneling as defined in claim 3, wherein said canopy further includes a canopy energy-absorbing bumper assembly;

the top cover energy-absorbing buffer component comprises an iron sheet cover and a ceramic sheet group which are arranged in a stacked mode to play a buffering role.

7. The safety shield apparatus for tunneling construction according to claim 1, wherein one end of the towing rope is detachably positioned on the rope end positioning assembly, and the other end is positioned on the towing winch;

the dragging rope is of a hollow structure and can convey gas;

the rope body is a tubular rope body;

the dragging winch comprises a winch main body, and the winch main body is provided with a vent hole;

the dragging rope is communicated with the vent hole;

the dragging rope splicing assembly further comprises a sealing assembly, and normal ventilation is not affected after the dragging rope is spliced; during the in-service use, if constructor does not in time get back to protective housing, the rope is pulled in the dismantlement, borrows to pull the rope and can breathe.

8. The safety device for tunnel engineering construction according to claim 7, wherein the rope body comprises an air inlet pipe, an air outlet pipe and a pipe body fixing block;

the pipe body fixing block fixes the air inlet pipe and the air outlet pipe in the rope body;

the dragging rope also comprises a breathing auxiliary component;

the breathing auxiliary assembly is positioned at one end of the dragging rope close to the rope end positioning assembly, is detachably and fixedly connected to the rope end positioning assembly and is used for assisting a constructor to breathe;

the breathing auxiliary component comprises a buccal ball, an air inlet one-way valve and an air outlet one-way valve;

the buccal ball is spherical and is used for being held in the mouth;

the air inlet one-way valve and the air outlet one-way valve are fixed on the buccal ball and are respectively communicated with the air inlet pipe and the air outlet pipe;

the dragging rope splicing assembly further comprises an angle locking assembly;

the angle locking assembly is used for locking the angle between the rope bodies so as to ensure the penetration of the air inlet pipe and the air outlet pipe.

9. The safety protection device for tunnel engineering construction according to claim 1, further comprising an airbag triggering assembly, wherein the airbag triggering assembly is of a belt-shaped structure, one end of the airbag triggering assembly is positioned on the gas generator of the airbag, and the other end of the airbag triggering assembly is positioned with the hook body;

when the hook is used, the hook body is positioned on the scaffold, and when a constructor is pulled away from the scaffold, the air bag trigger assembly positioned on the air generator is separated from the air generator to trigger the air generator to operate.

10. A safety shield apparatus for tunnel construction according to claim 1, wherein said trigger switch simultaneously controls the operation of said airbag.

Technical Field

The invention relates to the technical field of refuge rooms, in particular to a safety protection device for tunnel engineering construction.

Background

Tunnels are engineering buildings buried in the ground and are a form of utilizing underground space by human beings, and can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mine tunnels and the like.

In order to guarantee the life safety of constructors when collapse occurs in the tunnel construction process, in the prior art, a method of constructing an emergency refuge room in a tunnel under construction is generally adopted for the constructors to avoid when the collapse problem occurs and wait for rescue; the Chinese invention patent with the patent number of CN201810083131.9 discloses a tunnel construction collapse emergency refuge room, which overcomes the defects that the outside cannot know the conditions in the refuge room after collapse, the breathing oxygen of people cannot be guaranteed after a standby power supply is used up, and a special food storage position is not defined in the existing tunnel construction collapse emergency refuge room;

however, in the refuge room scheme, the constructors need to enter the refuge room actively by walking or running, and when the constructors find collapse, the constructors need to go up and down the scaffold and run to the door, so that the time consumption is long, the constructors are difficult to enter the refuge room at the first time when the collapse is found, and the life safety of the constructors is difficult to guarantee in time.

Disclosure of Invention

The embodiment of the application provides a safety device for tunnel engineering construction, solves the technical problem that a safety device for tunnel engineering construction assists constructors to avoid risks untimely in the prior art, and achieves the technical effect that the safety device for tunnel engineering construction can assist the constructors to timely and effectively avoid risks.

The embodiment of the application provides a safety protection device for tunnel engineering construction, which comprises a control unit, a protection shell, a personnel dragging assembly and a safety guarantee assembly, wherein the protection shell is arranged on the control unit;

the main body of the protective shell is hemispherical, the interior of the protective shell is hollow, and the protective shell is used for storing living materials and accommodating refugees;

the protective shell is provided with a plurality of entrances and exits, and a channel closing plate is positioned on each entrance and exit and used for closing the entrances and exits and is in an open state in a normal state;

the personnel dragging component comprises a dragging winch, a dragging rope splicing component, a rope head positioning component and a trigger switch;

the dragging winch is positioned in the protective shell, and each access corresponds to one dragging winch;

the dragging winch is used for retracting the dragging rope, and a rope end positioning component is positioned at one end of the dragging rope, which is far away from the dragging winch;

the number of the dragging ropes is multiple, each dragging rope is formed by splicing multiple rope bodies through the dragging rope splicing assembly, and the trigger switch is used for controlling the operation of dragging and hoisting;

the rope head positioning assembly is used for fixing the splicing rope on a constructor;

the safety guarantee assembly comprises an air bag which is positioned on the rope head positioning assembly and used for guaranteeing that limbs of constructors are not greatly damaged in the dragging process.

Preferably, the door-entering buffering component is also included;

the door entering buffering assembly is positioned on the access opening;

the door entering buffering assembly comprises a buffering plate and folding elastic cloth;

the buffer board is plate-shaped and is fixed on the access opening through the folding elastic cloth, the folding elastic cloth is normally folded, the dragging rope penetrates through the buffer board, when a constructor is dragged to contact the buffer board, the folding elastic cloth cancels the folding state and generates elastic deformation due to stress, and the constructor is dragged into the protective shell through the access opening.

The protective shell further comprises a top cover, an annular supporting wall and a bottom plate;

the top cover is positioned right above the annular supporting wall and used for preventing falling objects from falling into the protective shell;

the annular supporting wall is annular and plays roles of supporting the top cover and preventing soil and stones from entering the protective shell;

the bottom plate is circular and is positioned at the bottom of the annular supporting wall;

the inside location of protective housing has puts the thing subassembly for place the survivorship material.

The further still include the transfer assembly;

the transfer component comprises a supporting wheel assembly and a supporting wheel arrangement hole;

the supporting wheel assembly is a universal wheel; the supporting wheel placing holes are formed in the bottom of the bottom plate, the number of the supporting wheel placing holes is three or more, and the supporting wheel placing holes are used for positioning the supporting wheel assemblies.

The device further comprises a support assembly, wherein the support assembly comprises a central support column and a top cover lifting assembly;

the supporting component plays a role in supporting the top cover;

the central support column is cylindrical, one end of the central support column is fixed on the top cover, the other end of the central support column is fixed on the bottom plate, and the axial direction of the central support column is the same as the height direction of the protective shell;

the top cover lifting assembly is annular, one end of the top cover lifting assembly is fixed on the bottom plate, and the other end of the top cover lifting assembly is in direct contact with the edge of the top cover.

Preferably, the top cover further comprises a top cover energy absorption and buffer assembly;

the top cover energy-absorbing buffer component comprises an iron sheet cover and a ceramic sheet group which are arranged in a stacked mode to play a buffering role.

Preferably, one end of the dragging rope is detachably positioned on the rope head positioning component, and the other end of the dragging rope is positioned on the dragging winch;

the dragging rope is of a hollow structure and can convey gas;

the rope body is a tubular rope body;

the dragging winch comprises a winch main body, and the winch main body is provided with a vent hole;

the dragging rope is communicated with the vent hole;

the dragging rope splicing assembly further comprises a sealing assembly, and normal ventilation is not affected after the dragging rope is spliced; during the in-service use, if constructor does not in time get back to protective housing, the rope is pulled in the dismantlement, borrows to pull the rope and can breathe.

The preferable rope body comprises an air inlet pipe, an air outlet pipe and a pipe body fixing block;

the pipe body fixing block fixes the air inlet pipe and the air outlet pipe in the rope body;

the dragging rope also comprises a breathing auxiliary component;

the breathing auxiliary assembly is positioned at one end of the dragging rope close to the rope end positioning assembly, is detachably and fixedly connected to the rope end positioning assembly and is used for assisting a constructor to breathe;

the breathing auxiliary component comprises a buccal ball, an air inlet one-way valve and an air outlet one-way valve;

the buccal ball is spherical and is used for being held in the mouth;

the air inlet one-way valve and the air outlet one-way valve are fixed on the buccal ball and are respectively communicated with the air inlet pipe and the air outlet pipe;

the dragging rope splicing assembly further comprises an angle locking assembly;

the angle locking assembly is used for locking the angle between the rope bodies so as to ensure the penetration of the air inlet pipe and the air outlet pipe.

The airbag device preferably further comprises an airbag triggering assembly, wherein the airbag triggering assembly is of a belt-shaped structure, one end of the airbag triggering assembly is positioned on the gas generator of the airbag, and the other end of the airbag triggering assembly is positioned with the hook body;

when the hook is used, the hook body is positioned on the scaffold, and when a constructor is pulled away from the scaffold, the air bag trigger assembly positioned on the air generator is separated from the air generator to trigger the air generator to operate.

Preferably said trigger switch simultaneously controls the operation of said airbags.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

the safety protection device for tunnel engineering construction comprises a hemispherical protection shell, wherein a plurality of entrances and exits for emergency entrance and exit of personnel are formed in the protection shell, the safety protection device also comprises a personnel dragging component and a safety protection component, the personnel dragging component is used for dragging the personnel into the protection shell quickly when accidents such as collapse occur, and the safety protection component ensures that limbs of constructors are not greatly damaged in the dragging process; the technical problem that the safety protection device for tunnel engineering construction assists constructors to avoid risks untimely in the prior art is effectively solved, and the technical effect that the safety protection device for tunnel engineering construction can assist constructors to timely and effectively avoid risks is achieved.

Drawings

FIG. 1 is a cross-sectional view of a safety shield apparatus for tunnel construction according to the present invention;

FIG. 2 is a schematic structural diagram of the safety protection device for tunnel engineering construction according to the present invention;

FIG. 3 is a schematic structural view of a rope end positioning assembly of the safety protection device for tunnel engineering construction of the present invention;

FIG. 4 is a cross-sectional view of a canopy energy absorber assembly of the safety shield apparatus of the present invention in use in tunnel construction;

FIG. 5 is an exploded view of the energy absorbing hood assembly of the safety shield apparatus of the present invention used in tunnel construction;

FIG. 6 is a schematic structural view of the bottom of the safety protection device for tunnel engineering construction according to the present invention;

FIG. 7 is a schematic structural view of a transfer unit of the safety shield apparatus for tunnel construction according to the present invention;

FIG. 8 is a schematic view of a buffer plate of the safety device for tunnel construction according to the present invention;

FIG. 9 is a schematic structural diagram of an external appearance of a door buffering assembly of the safety protection device for tunnel engineering construction according to the present invention;

FIG. 10 is a cross-sectional view of the door access cushioning assembly of the safety shield apparatus for tunnel construction of the present invention;

FIG. 11 is a first schematic structural view of a drag rope of the safety device for tunnel construction according to the present invention;

FIG. 12 is a second schematic structural view of a towing rope of the safety device for tunnel construction according to the present invention;

fig. 13 is a schematic structural view of an airbag of the safety protection device for tunnel engineering construction, which is disclosed by the invention:

FIG. 14 is a schematic structural view of a towing winch of the safety protection device for tunnel construction according to the present invention;

FIG. 15 is a third schematic structural view of a towing rope of the safety shield apparatus for tunnel construction according to the present invention;

FIG. 16 is a cross-sectional view of the trailing cords of the safety shield apparatus of the present invention in use in tunneling construction;

FIG. 17 is a partial cross-sectional view of the trailing cords of the safety shield apparatus for tunnel construction of the present invention;

FIG. 18 is a schematic structural view of a rotating assembly of the safety shield apparatus for tunnel construction of the present invention;

FIG. 19 is a schematic view of an appearance structure of a buccal ball of the safety device for tunnel engineering construction of the present invention;

fig. 20 is a sectional view of a buccal ball of a safety device for tunnel engineering construction according to the present invention.

In the figure:

a protective enclosure 100, a top cover 110, an annular support wall 120, an access opening 121, a channel closure plate 122, a closure plate positioning assembly 123, a closure plate operating drive assembly 124, a base plate 130, a plug-in ground fixing assembly 140,

A support assembly 200, a central support column 210, a top cover lifting assembly 220, a placement assembly 230, a,

A transfer component 300, a supporting wheel assembly 310, a wheel body 311, a wheel body positioning component 312, a positioning bracket 313, a wheel supporting rod 314, a spring 315, a supporting wheel arranging hole 320,

The device comprises a personnel dragging component 400, a dragging winch 410, a winch main body 411, a vent hole 412, a dragging rope 420, a tubular rope body 421, a spring sheath 422, an air inlet pipe 423, an air outlet pipe 424, a pipe fixing block 425, a sealing component 426, a breathing auxiliary component 427, a buccal ball 437-1, an air inlet one-way valve 437-2, an air outlet one-way valve 437-3, a dragging rope splicing component 430, a rotating assembly component 431, an angle locking component 432, a rope head positioning component 440, a trigger switch 450,

A safety guarantee component 500, an air bag 510, an air bag trigger component 520, a door entering buffer component 530, a buffer plate 531, a first buffer plate 531-1, a second buffer plate 531-2, a buffer plate combined component 531-3, a folding elastic cloth 532,

A top cover energy absorption buffer assembly 600, an iron sheet cover 610, a first iron sheet cover 611, a second iron sheet cover 612, an inner iron sheet cover 613, a ceramic sheet group 620, a first ceramic sheet group 621, a second ceramic sheet group 622, a gap 630, a first gap 631, a second gap 632, a,

A portal closure trigger assembly 700, a trigger projection 710.

Detailed Description

In order to facilitate an understanding of the present invention, the present application will now be described more fully with reference to the accompanying drawings; the preferred embodiments of the present invention are illustrated in the accompanying drawings, but the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is noted that the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 is a cross-sectional view of a safety protection device for tunnel engineering construction according to the present invention; the safety protection device for tunnel engineering construction comprises a protection shell 100, a personnel dragging assembly 400, a safety guarantee assembly 500 and a control unit; the application is through providing a safety device for tunnel engineering construction, the device includes hemispherical protecting sheathing 100, be equipped with a plurality of entrances and exits 121 that are used for personnel to promptly pass in and out on protecting sheathing 100, safety device still includes personnel and pulls subassembly 400 and safety guarantee subassembly 500, personnel pull subassembly 400 be used for when accidents such as collapse with personnel pull into protecting sheathing 100 fast in, safety guarantee subassembly 500 guarantees that constructor is not received great damage by the in-process limbs of being pulled.

Example one

As shown in fig. 1, the safety protection device for tunnel engineering construction of the present application includes a protection housing 100, a personnel dragging assembly 400, a safety guarantee assembly 500, and a control unit;

as shown in fig. 1 and 2, the main body of the protective casing 100 is hemispherical, and the inner part of the protective casing is hollow, and is used for storing living materials and accommodating refuge constructors; further, the protective casing 100 includes a top cover 110, a ring-shaped supporting wall 120 and a bottom plate 130; the top cover 110 is positioned directly above the annular support wall 120 for preventing falling objects from falling into the protective housing 100; the annular supporting wall 120 is annular, and plays a role in supporting the top cover 110 and preventing earth and stones from entering the protective casing 100; the bottom plate 130 is circular and is positioned at the bottom of the annular support wall 120; the inside of the protective casing 100 is positioned with a placement assembly 230 for placing living materials such as oxygen generating devices, water, food, batteries, etc.

The annular supporting wall 120 is provided with a plurality of entrances and exits 121 for emergency entrance and exit of workers, a channel closing plate 122 is positioned on the entrances and exits 121, and the channel closing plate 122 is used for closing the entrances and exits 121 and is in an open state in a normal state;

further, the channel closing plate 122 includes a closing plate main body, a closing plate positioning assembly 123, a closing plate operation driving assembly 124; the main body of the closing plate is an arc-shaped plate, and the closing plate positioning assembly 123 is rotatably and fixedly connected to the annular supporting wall 120; the closing plate operation driving assembly 124 is used for driving the closing plate main body to rotate under the control of the control unit so as to close the access opening 121;

preferably, the number of the inlet and outlet 121 is six or more;

in order to prevent the protective shell 100 from being extruded by falling bricks and stones to move randomly when accidents such as collapse occur, and accident rescue is influenced; preferably, the shield casing 100 further comprises an insertion fixing assembly 140, wherein the insertion fixing assembly 140 is annular or conical, is positioned at the bottom of the annular support wall 120, and is used for tamping the insertion fixing assembly 140 into the ground under the impact of falling masonry and the like so as to fix the shield casing 100.

The personnel dragging assembly 400 plays a role of dragging personnel into the protective shell 100 when a danger such as collapse occurs; further, the personnel dragging assembly 400 comprises a dragging winch 410, a dragging rope 420, a dragging rope splicing assembly 430, a rope end positioning assembly 440 and a trigger switch 450; the dragging winches 410 are positioned inside the protective shell 100, the number of the dragging winches is the same as that of the entrances and exits 121, and each entrance and exit 121 corresponds to one dragging winch 410; the dragging winch 410 is used for retracting the dragging rope 420; the number of the dragging ropes 420 is multiple, and each dragging rope 420 is formed by splicing multiple rope bodies through the dragging rope splicing assembly 430 (detachably); one end of the dragging rope 420 is wound and positioned on the dragging winch 410, and the other end is provided with a rope head positioning component 440; the rope end positioning assembly 440 is used for fixing the spliced rope on a constructor, and as shown in fig. 3, the structure of the spliced rope is preferably a safety belt (a falling suspension safety belt) or a vest; the trigger switch 450 is positioned on the rope end positioning assembly 440 for controlling the operation of the towing winch 410.

Preferably, the number of the trigger switch 450 is two, one of which is positioned on the string head positioning assembly 440, and the other is fixed inside the protective casing 100.

Further, as shown in fig. 11 and 12, the trailing rope splicing assembly 430 includes a rotating assembly 431 for rotatably fixing the two rope bodies together.

The safety guarantee assembly 500 is used for guaranteeing that limbs of constructors are not greatly damaged in the dragging process; further, the safety assembly 500 includes an airbag 510 and a door buffer assembly 530; the airbag 510 is positioned on the tether positioning assembly 440 to inflate and protect the person from injury while the person towing assembly 400 is in operation; the door-entering buffering assembly 530 is positioned on the door-entering opening 121; further, the door buffer assembly 530 includes a buffer plate 531 and a folded elastic cloth 532; as shown in fig. 8 to 10, the buffer plate 531 is plate-shaped and fixed to the entrance 121 through the foldable elastic cloth 532, the foldable elastic cloth 532 is normally folded, the dragging rope 420 penetrates through the buffer plate 531, when the constructor is dragged to contact the buffer plate 531, the foldable elastic cloth 532 is unfolded and turned and elastically deformed due to stress, and the constructor is dragged into the protective housing through the entrance 121.

Further, the buffer plate 531 comprises a first buffer plate 531-1, a second buffer plate 531-2 and a buffer plate assembly 531-3; the first buffer plate 531-1 and the second buffer plate 531-2 are both plate-shaped, the first buffer plate 531-1 is detachably and fixedly connected to the second buffer plate 531-2 through the buffer plate assembly 531-3, and the buffer plate assembly 531-3 is preferably of a zipper structure; after being dragged into the access opening 121, the constructor removes the first buffer plate 531-1 from the second buffer plate 531-2 and enters the interior of the protective shell.

Preferably, the trigger switch 450 simultaneously controls the operation of the airbag 510;

further, the airbag is shown in fig. 13, and protects the head, the back and the four limbs of a constructor;

further, the airbag comprises an airbag and a gas generator; the gas generator is used for generating a large amount of gas in a short time to fill the air bag; the gas generator is preferably a compressed gas type gas generator; the air bag is made of polyamide fabric with good anti-cracking performance.

Preferably, the safety assembly 500 further comprises an airbag triggering assembly 520, wherein the airbag triggering assembly 520 is a belt-shaped structure, one end of which is positioned on the gas generator, and the other end of which is positioned with a hook body; when the hook body is used, the hook body is positioned on a scaffold, and when a constructor is pulled away from the scaffold, the air bag trigger assembly 520 positioned on the air generator is separated from the air generator to trigger the air generator to operate.

The control unit is used for controlling the coordinated operation of each component of the safety protection device, and is the prior art and is not described herein again;

preferably, the control unit further comprises a door closing triggering assembly 700, wherein the door closing triggering assembly 700 is used for controlling the operation of the closing plate operation driving assembly 124 so as to control the opening and closing of the entrance 121; the door sealing triggering component 700 includes a triggering protrusion 710, and the triggering protrusion 710 is positioned on the buffer board 531.

In order to facilitate the safety device to move along with the construction progress, preferably, the safety device further comprises a transfer assembly 300; further, as shown in fig. 6 and 7, the transfer assembly 300 includes a supporting wheel assembly 310 and a supporting wheel seating hole 320; the supporting wheel assembly 310 is a universal wheel; the supporting wheel placing holes 320 are arranged at the bottom of the bottom plate 130, and the number of the supporting wheel placing holes is three or more, and the supporting wheel placing holes are used for positioning the supporting wheel assemblies 310;

further, the supporting wheel assembly 310 includes a wheel body 311 and a wheel body positioning assembly 312; the wheel body positioning assembly 312 comprises a positioning bracket 313, a wheel supporting rod 314 and a spring 315; the positioning bracket 313 is in a plate shape and is fixed on the supporting wheel placing hole 320, and one end of the wheel supporting rod 314 is fixed on the wheel body 311 and is positioned on the positioning bracket 313 in a sliding manner; the spring 315 is positioned between the positioning bracket 313 and the wheel body 311, is a compression spring, and plays a supporting role; when the collapse occurs, the pressure spring is compressed under the action of the earth and stone pressure, and the bottom plate 130 is tightly attached to the ground.

When the safety protection device of the embodiment of the application is actually used, a constructor is connected with the protection shell 100 through the dragging rope 420, and in the construction process, when the dragging rope 420 possibly crosses due to the walking of the constructor, the constructor recombines the rope bodies through the dragging rope splicing assembly 430 to avoid the occurrence of kinking; when the safety protection device needs to return to the interior of the protection shell 100 to avoid in an emergency, the safety air bag 510 automatically expands to protect the constructor by only triggering the trigger switch 450, and the constructor is dragged into the protection shell 100 by the personnel dragging assembly 400.

The technical scheme in the embodiment of the application at least has the following technical effects or advantages:

the technical problem that a safety protection device for tunnel engineering construction assists constructors to avoid risks untimely in the prior art is solved, and the technical effect that the safety protection device for tunnel engineering construction can assist the constructors to timely and effectively avoid risks is achieved.

Example two

In order to ensure the safety of the safety protection device, the stability of the protection shell 100 is improved; in the embodiment of the present application, a supporting assembly 200 is added on the basis of the above embodiment, as shown in fig. 1, the supporting assembly 200 includes a central supporting column 210 and a top cover lifting assembly 220; the supporting assembly 200 plays a role of supporting the top cover 110; further, the central supporting column 210 is cylindrical, one end of the central supporting column is fixed on the top cover 110, the other end of the central supporting column is fixed on the bottom plate 130, and the axial direction of the central supporting column 210 is the same as the height direction of the protective casing 100; the top cap lift assembly 220 is ring-shaped, one end of which is fixed to the bottom plate 130 and the other end of which is in direct contact with the edge of the top cap 110.

In order to further improve the safety and ensure the life safety of personnel in the protective shell 100 when an accident occurs, the top cover 110 further comprises a top cover energy absorption buffer assembly 600;

as shown in fig. 1, 4 and 5, the top cover energy absorption buffer assembly 600 includes a sheet iron cover 610 and a ceramic sheet group 620, which are stacked and arranged for buffering;

further, as shown in fig. 4 and 5, the iron sheet cover 610 includes a first iron sheet cover 611, a second iron sheet cover 612 and an inner iron sheet cover 613; the ceramic sheet set 620 comprises a first ceramic sheet set 621 and a second ceramic sheet set 622; the first iron skin cover 611 is located at the outermost part of the top cover 110, the first ceramic sheet group 621 is formed by splicing a plurality of arc-shaped ceramic sheets, and the first ceramic sheet group 621 is fixed on the first iron skin cover 611 in a sticking manner; a gap 630 is left between the first ceramic sheet group 621 and the second iron sheet cover 612, the gap 630 is a first gap 631, and the first gap 631 is 10-50 mm; the second ceramic sheet group 622 is formed by splicing a plurality of arc-shaped ceramic sheets, and the second ceramic sheet group 622 is fixed on the second iron sheet cover 612 in a sticking way; the second ceramic sheet group 622 is positioned on the surface of the second iron sheet cover 612 far away from the first gap 631; the inner iron sheet cover 613 is positioned at the lowest part of the top cover 110 and is used for the last protection of the top cover 110; a second gap 632 is arranged between the second ceramic sheet group 622 and the inner iron sheet cover 613, and the second gap 632 is 40-300 mm.

EXAMPLE III

In order to further improve the practicality of this application safety device, guarantee constructor's life safety, the subassembly 400 is dragged to the personnel on the basis of above-mentioned embodiment to this embodiment and has optimized and reformed transform, specifically is:

one end of the dragging rope 420 is detachably positioned on the rope end positioning component 440, and the other end is positioned on the dragging winch 410; the dragging rope 420 is a (gas-tight) hollow structure and can convey gas; the rope body is a tubular rope body 421; as shown in fig. 14, the towing winch 410 includes a winch body 411, and the winch body 411 is provided with an air hole 412; the towing rope 420 is communicated with the vent 412; the towing rope splicing assembly 430 further comprises a sealing assembly 426, and normal ventilation is not affected after the towing rope 420 is spliced; during actual use, if the constructor does not get back to the protective housing 100 in time (select other danger avoiding positions to avoid danger), the dragging rope 420 can be detached, and the constructor can breathe by means of the dragging rope 420.

In order to prevent the dragging rope 420 from being squeezed to affect ventilation, a spring sheath 422 is preferably arranged on the dragging rope 420.

In order to prevent a user from easily causing that the oxygen content of local gas of the dragging rope 420 is low (the gas is difficult to flow, the new gas is slowly supplemented, and the oxygen content is continuously low due to the repeated use of the old gas) in the ventilation process due to the length process of the dragging rope 420 when the constructor breathes by using the dragging rope 420, so that the life safety of the constructor is endangered; preferably, as shown in fig. 15 to 18, the rope body includes an air inlet pipe 423, an air outlet pipe 424 and a pipe body fixing block 425; the pipe fixing block 425 fixes the air inlet pipe 423 and the air outlet pipe 424 in the rope body; the towing rope 420 further comprises a breathing assistance assembly 427; the breathing assistance component 427 is positioned at one end of the dragging rope 420 close to the rope end positioning component 440, and is detachably and fixedly connected to the rope end positioning component 440 for assisting a constructor to breathe; as shown in fig. 19 and 20, further, the breathing assistance assembly 427 includes a buccal ball 437-1, an air inlet check valve 437-2 and an air outlet check valve 437-3; the buccal ball 437-1 is spherical and is used for being held in the mouth; the air inlet one-way valve 437-2 and the air outlet one-way valve 437-3 are both fixed on the buccal ball 437-1 and are respectively used for being communicated with the air inlet pipe 423 and the air outlet pipe 424; the towing rope splicing assembly 430 further comprises an angle locking assembly 432; the angle locking assembly 432 is used for locking the angle between the ropes so as to ensure the penetration of the air inlet pipe 423 and the air outlet pipe 424.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.