CN212535665U - Telescopic tunnel excavation trolley capable of avoiding danger urgently - Google Patents

Abstract

The utility model discloses a telescopic tunnel excavation trolley that can promptly avoid danger, including square platform truck frame, the platform truck frame can stretch out and draw back in tunnel width direction and direction of height, platform truck frame top surface is equipped with the capping steel backing plate, the capping steel backing plate seals platform truck frame top surface, be equipped with step steel sheet platform on the platform truck frame side towards tunnel both sides face respectively, step steel sheet platform can be stably the platform truck frame left and right sides side that is horizontal state or closed shrink state, the platform truck frame side towards tunnel face is equipped with telescopic retaining structure, retaining structure seals the platform truck frame front side of shrink state, platform truck frame bottom is equipped with walking bearing structure, be equipped with in the platform truck frame and guarantee article supply room, oxygen storage supply room and electronic alarm system storehouse; the trolley can provide necessary survival refuge space for constructors near the tunnel face under the condition that sudden accidents occur in tunnel construction, and the survival probability of trapped people can be improved.

Description

Telescopic tunnel excavation trolley capable of avoiding danger urgently

Technical Field

The utility model relates to a lifesaving equipment is used in tunnel excavation accident, in particular to telescopic tunnel excavation platform truck that can promptly keep away dangerous.

Background

Because the tunnel belongs to the underground space structure, the construction difficulty is higher, the construction risk is prominent, and particularly, sudden accidents are easy to happen under the condition that the surrounding rock of the tunnel is poor or passes through a bad geological section. Common tunnel construction accidents include collapse, roof fall, mud burst, water burst and the like, which all can cause constructors to be buried or trapped, thereby posing great threat to life safety. In view of the above situation, the current countermeasure is to arrange an escape duct in the tunnel, aiming to allow the construction worker to evacuate from the vicinity of the tunnel face to the tunnel lining through the escape duct. However, the escape pipeline occupies the limited construction space of the tunnel, so that the interference to the tunnel construction is large, and the construction site can be rarely arranged regularly according to requirements. In addition, the escape pipeline has obvious defects, the pipeline is arranged at the stage of the excavation step and the inverted arch, obvious inflection points exist, the pipeline is easy to block in accidents, and the function of the pipeline in accidents such as closing the door of a tunnel is extremely limited.

Meanwhile, with the change of surrounding rocks of the tunnel, the situation that the tunnel excavation trolley is temporarily not needed at the tunnel face due to the change of the tunnel excavation method and the surplus space in the tunnel is not used for storing the excavation trolley exists in the tunnel construction process. At this moment, because current tunnel excavation platform truck is mostly rigid frame structure, often need be forced to cut apart the excavation platform truck into the several fritter, transport outside the tunnel in batches. And then, when the excavation trolley is needed again in subsequent construction, the excavation trolley is reassembled again. The above process is labor and time consuming and has obvious disadvantages.

It can be seen that the existing tunnel construction has the obvious defect of insufficient capability of responding to the sudden accidents in the tunnel construction, the safety of constructors in the tunnel cannot be effectively guaranteed, and the comprehensive problem that the equipment allocation process of the excavation trolley in the tunnel is extremely complicated is solved. In view of the above, it is an urgent need in the engineering industry to develop a retractable tunnel excavation trolley for the workers near the tunnel face to avoid danger.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a telescopic tunnel excavation platform truck that can promptly keep away danger can provide necessary living refuge space for constructor near the face under the condition that the accident appears in tunnel construction, can improve stranded personnel's survival probability, and the platform truck can freely pass in and out the tunnel in addition in tunnel construction process.

The utility model aims at realizing through the following technical scheme:

the utility model provides a can promptly keep away telescopic tunnel excavation platform truck of danger, includes square platform truck frame, the platform truck frame can stretch out and draw back at tunnel width direction and direction of height, platform truck frame top surface is equipped with the capping steel backing plate, the capping steel backing plate seals platform truck frame top surface, is equipped with step steel sheet platform on the platform truck frame side of tunnel both sides face respectively, step steel sheet platform can be stably the platform truck frame left and right sides side of horizontality or closed contraction state, is equipped with telescopic retaining structure towards the platform truck frame side of tunnel face, retaining structure seals the platform truck frame front side of contraction state, platform truck frame bottom is equipped with walking bearing structure, be equipped with survival guarantee article supply chamber, oxygen apotheca and electronic alarm system storehouse in the platform truck frame.

Further, the trolley frame is composed of two frame units in the width direction of the tunnel, the frame units are of inverted L shapes on the section of the tunnel, openings of the two inverted L-shaped frame units are opposite, the horizontal parts of the two inverted L-shaped frame units are connected through an automatic telescopic rod, the two capping steel base plates are respectively arranged on the horizontal parts of the two inverted L-shaped frame units, one capping steel base plate is of a hollow structure and is open towards the opening of the other capping steel base plate, a steel sliding plate which can be inserted into the capping steel base plate with the hollow structure from the opening is connected onto the other capping steel base plate, the supporting and blocking structures are two groups and are respectively fixed on the two inverted L-shaped frame units, the walking and supporting structures are two groups and are respectively arranged on the bottoms of the two inverted L-shaped frame units, and each walking and supporting structure comprises a walking structure which can rotate in 0-90 degrees.

Further, the vertical portion of the type of falling L frame unit includes three telescopic spout stand poles, and three spout stand poles are along the even vertical setting in interval of tunnel length direction, and two longitudinal steel crossbeams that set up through the level between the lower part link to each other in the three spout stand poles, and the horizontal part of the type of falling L frame unit is day style of calligraphy frame in tunnel length direction, and day style of calligraphy frame one side lower part is fixed at three spout stand pole tops, automatic telescopic link is three and its one end is connected respectively on day style of calligraphy frame opposite side, automatic telescopic link is telescopic jack, telescopic jack links to each other with the oil pipe in jack hydraulic oil pump system storehouse, jack hydraulic oil pump system storehouse sets up in the platform truck frame, the slope is equipped with the bracing between day style of calligraphy frame downside and spout stand pole upper end.

Further, spout stand pole includes lower part cavity stand, middle part channel-section steel stand, upper portion I-steel stand and long stroke jack, middle part channel-section steel stand lower extreme and lower part cavity stand upper end are fixed and are linked together, and upper portion I-steel stand lower extreme partly slides and is located the middle part channel-section steel stand inside, outside another part is located the middle part channel-section steel stand, the hydro-cylinder lower extreme of long stroke jack is fixed in lower part cavity stand, the body of rod of long stroke jack is three and is isosceles triangle and arranges in horizontal cross-section, and wherein two body of rods are located the middle part channel-section steel stand, outside another body of rod is located the middle part channel-section steel stand, and the top of three body of rods all links to each other with upper portion I-steel stand bottom, long stroke jack links to each.

Further, four step steel plate platforms are arranged on the vertical part of the inverted L-shaped frame unit towards the side surface of the tunnel, the four step steel plate platforms are arranged in an equal division manner in an upper row and a lower row, two ends of one side of the lower row of step steel plate platforms are respectively hinged on two adjacent middle channel steel upright posts through hinged shafts, one ends of two lower rocker arms are respectively hinged on the middle parts of two ends of the lower row of step steel plate platforms, the other end of the upper row of step steel plate platforms is arranged at the lower end of the middle channel steel stand column in a sliding mode through a pull-down slider structure respectively, two ends of one side of each upper row of step steel plate platforms are hinged to the upper ends of the two adjacent middle channel steel stand columns through hinged shafts respectively or hinged to the two adjacent upper I-shaped steel stand columns through hinged shafts respectively, one end of each upper rocker arm is hinged to the middle parts of two ends of the upper row of step steel plate platforms respectively, and the other end of each upper rocker arm is arranged at the middle parts of the middle channel steel stand columns in a sliding mode through the pull-down slider structure respectively.

Further, the pull-down sliding block structure comprises a built-in telescopic jack and an upright sliding block, the lower end of an oil cylinder of the built-in telescopic jack is fixedly arranged in a middle channel steel stand column, the top end of a rod body is connected with the bottom end of the upright sliding block, a sliding groove for the upright sliding block to slide is formed in the middle channel steel stand column towards the side face of the tunnel along the height direction of the middle channel steel stand column, the other end of the lower rocker arm or the other end of the upper rocker arm is hinged to the upright sliding block, and the built-in telescopic jack is connected with an oil pipe of a jack hydraulic oil pump system.

Further, the lift-up slider structure includes electronic ropewinder, steel strand wires and handstand formula slider, electronic ropewinder sets up in a steel box, the steel box sets up on upper portion I-steel stand top surface, upper portion I-steel stand is equipped with the spout along its direction of height towards tunnel side, the handstand formula slider slides and is equipped with in the spout, handstand formula slider top links to each other with steel strand wires one end, the steel strand wires other end passes steel box bottom surface and twines on electronic ropewinder, the other end of going up the rocking arm articulates on the handstand formula slider.

Further, a fender structure includes welding steel sheet, jack oil pump box, a plurality of tertiary flexible jack, a fender steel crossbeam and net rolling slats door, the one side of welding steel sheet is fixed on falling L type frame unit upper portion, jack oil pump box is fixed on the another side of welding steel sheet, and the hydro-cylinder upper end fixed connection of a plurality of tertiary flexible jack is on jack oil pump box bottom surface, body of rod lower extreme and a fender steel crossbeam link to each other, a fender steel crossbeam sets up along tunnel width direction, and a plurality of tertiary flexible jack even interval sets up between jack oil pump box and a fender steel crossbeam, and net rolling slats door upper end is fixed on the welding steel sheet, and the lower extreme links to each other with a fender steel crossbeam, and a plurality of tertiary flexible jack are linked together through oil pipe and jack oil pump box.

Further, the trolley frame side that deviates from the tunnel face is equipped with trolley rear end elevation structure, trolley rear end elevation structure includes two lift platform, connects through X shape hinge structure between two lift platforms, and X shape hinge structure is formed by two connecting rods in the articulated connection of middle part looks, and the both ends of two connecting rods are articulated mutually with two lift platform looks side both ends respectively and are connected, and two lift platforms deviate from the side both ends mutually and are supported by tertiary lifting jack respectively, and tertiary lifting jack lower extreme is fixed on walking bearing structure, tertiary lifting jack links to each other with the oil pipe in jack hydraulic oil pump system storehouse, jack hydraulic oil pump system storehouse sets up in the trolley frame.

Furthermore, the walking support structure comprises a support steel skeleton, the support steel skeleton comprises a plurality of n-shaped skeletons which are uniformly arranged along the length direction of the tunnel at intervals, the upper middle parts of two adjacent n-shaped skeletons are connected by steel beams, the lower ends of the chute upright post rod and the three-stage lifting jack are fixed on the middle parts of the steel beams, two free ends of the lower part of the n-shaped skeletons are respectively provided with a short-distance lifting jack which vertically extends downwards, the free end of a rod body of the short-distance lifting jack is connected with the middle part of a disc-shaped expanding rigid cushion block, the walking structure is arranged on the middle part of the steel beams, the walking structure comprises a roller power chamber, the steel beams are composed of two steel beam monomers, opposite ends of the two steel beam monomers are respectively connected with opposite sides of the roller power chamber, the opposite sides of the two steel beam monomers are connected with the n-shaped, the upper end and the lower end in the supporting rod are respectively provided with a chain wheel, a chain is sleeved on the two chain wheels in a transmission manner, the upper chain wheel is sleeved on a driving shaft, the driving shaft is connected with a motor output shaft, the lower chain wheel is sleeved on a rotating shaft, the two ends of the rotating shaft respectively penetrate through the two sides of the supporting rod, the two ends of the rotating shaft positioned outside the supporting rod are respectively sleeved with a roller wheel, the gear type rotating flange is a flange provided with driven teeth circumferentially, one end of an oil cylinder of each direction-adjusting jack is respectively fixed on the upper surfaces of two adjacent n-shaped frameworks, the free ends of the rod bodies of the two direction-adjusting jacks are provided with main driving teeth along the length direction of the free ends, the rod bodies of the two direction-adjusting jacks extend into the roller wheel power chamber and are respectively positioned on the two opposite sides of the gear type rotating flange, the main driving teeth are meshed with the driven teeth, and a driving mechanism for driving the drill rod to rotate is arranged in the drill rod power chamber, and the short-distance lifting jack and the direction-adjusting jack are respectively connected with an oil pipe of the jack hydraulic oil pump system bin.

Still further, survival guarantee article supply chamber, oxygen storage supply chamber, jack hydraulic oil pump system storehouse and electronic alarm system storehouse are right trapezoid on the tunnel section, and two right-angle sides are fixed respectively on the vertical portion and the horizontal portion of the type of falling L frame unit, be equipped with the door on the inclined plane in survival guarantee article supply chamber, oxygen storage supply chamber, jack hydraulic oil pump system storehouse and electronic alarm system storehouse, be equipped with electronic flip formula steel door on the bottom surface in survival guarantee article supply chamber and oxygen storage supply chamber, survival guarantee article has been placed in the survival guarantee article supply chamber, and a rope one end links to each other with survival guarantee article, and the other end is fixed on electronic flip formula steel door medial surface, be equipped with two sets of at least oxygen jars in the oxygen storage supply chamber, a plurality of oxygen masks link to each other with two oxygen jars respectively through the pipeline, be equipped with the switch on the pipeline, the oxygen mask is hung and is put on electronic flip formula steel door medial surface, be equipped with battery, accident alarm controller in the electronic alarm system storehouse, the battery is the platform truck power supply, accident alarm controller is connected with tunnel portal alarm electricity, be equipped with the light on the electronic alarm system storehouse bottom surface, be equipped with a plurality of danger control switch of keeping away on the platform truck, keep away danger control switch and link to each other with jack balance valve, tertiary flexible jack, rolling slats door and the accident alarm controller in the hydraulic oil pump system storehouse respectively.

The utility model has the advantages that:

the utility model discloses a can promptly keep away telescopic tunnel excavation platform truck of danger, because it can stretch out and draw back and warp, make it possess supplementary construction state and the state of promptly taking refuge, switching through two kinds of operating condition, can provide tunnel normal construction period face excavation, strut the required construction platform function of construction process such as waiting, can provide the urgent danger place of keeping away of relatively reliable for constructor near the face when tunnel emergency again, thereby realize under the prerequisite that does not influence tunnel normal construction, personnel's safety guarantee ability when having improved the handling construction emergency accident by a wide margin, in addition, tunnel excavation platform truck accessible under the supplementary construction state is from the walking bearing structure in area sails away from the tunnel, be convenient for the nimble allotment of equipment in the tunnel during the construction.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the present invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the trolley frame in fig. 1.

Fig. 3 is another structural schematic view of the bogie frame of fig. 1.

Fig. 4 is a schematic view of the chute mast of fig. 2.

Fig. 5 is a schematic structural diagram of the pull-down slider structure in fig. 2.

Fig. 6 is a schematic structural diagram of the lifting slider structure in fig. 2.

Fig. 7 is a schematic layout view of the living security goods supply chamber, the oxygen storage supply chamber, the electronic alarm system chamber or the jack hydraulic oil pump system chamber on the trolley frame in fig. 1.

Fig. 8 is a schematic structural diagram of the retaining structure in fig. 1.

Fig. 9 is a schematic structural view of a rear end lifting structure of the trolley in fig. 1.

Fig. 10 is a schematic structural view of the walking support structure of fig. 1.

Fig. 11 is a schematic structural view of the walking structure in fig. 10.

Fig. 12-16 are schematic diagrams illustrating the change process of the trolley of the present invention from the auxiliary construction state to the emergency evacuation state.

FIG. 17 is a schematic view of a connection structure of a capping steel shim plate and a steel slide plate.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.

As shown in fig. 1-17, a telescopic tunnel excavation trolley capable of avoiding danger in an emergency includes a square trolley frame 1 made of steel, the trolley frame 1 is capable of extending in the width direction and the height direction of a tunnel, a top surface of the trolley frame 1 is provided with a capping steel backing plate 9, a constructor can work on the steel backing plate, materials and tools for construction can be placed on the capping steel backing plate, the capping steel backing plate 9 seals the top surface of the trolley frame 1 in a contraction and expansion state to prevent soil and rockfall on the top surface of the tunnel from entering the trolley frame, a person can protect the person in the trolley frame, side surfaces of the trolley frame 1 facing two side surfaces of the tunnel are respectively provided with a step steel plate platform 16, the step steel plate platforms 16 can be stably arranged on the left side surface and the right side surface of the trolley frame 1 in a horizontal state or a closing contraction state, when the step steel plate platform is in a horizontal state, the constructor can construct the side wall of the tunnel by standing on the step steel plate platform, when the left side and the right side of the trolley frame of the step steel plate platform in a closed contraction state are covered, earth and falling rocks can be prevented from entering the trolley frame from the side of the tunnel, the protection effect on people in the trolley frame can be realized, the side of the trolley frame 1 facing the tunnel face is provided with a telescopic supporting and stopping structure 6, the front side of the trolley frame 1 in the closed contraction state of the supporting and stopping structure 6 can prevent the falling rocks and the earth of the tunnel face from entering the trolley frame, the bottom of the trolley frame 1 is provided with a walking and supporting structure 8 which can walk when the trolley frame needs to move, the trolley frame can be supported when the trolley frame is in a construction or emergency danger avoiding state, an existence guarantee article supply chamber 2, an oxygen storage and supply chamber 3 and an electronic alarm system chamber 5 are arranged in the trolley frame 1, the existence guarantee article supply chamber stores articles required for existence, and the oxygen storage and supply chamber stores oxygen, the electronic alarm system cabin can alarm the outside of the tunnel when an emergency accident occurs in the tunnel; the excavation trolley mainly has three purposes of setting a transverse folding function: firstly, by transverse folding, on the premise of ensuring the danger avoiding space of constructors, the transverse space of the trolley frame is effectively reduced, so that the stress area of soil and the like acting on the excavation trolley is reduced, and the integral stability of the excavation trolley is facilitated; secondly, a necessary deformation space is transversely contracted for the excavation trolley, and the trolley step steel plate platform 16 is ensured to have enough space to be folded; and thirdly, the excavation trolley deformed into an emergency danger avoiding state is equivalent to the soil pulling trolley in volume and can pass through the lower parts of trolleys such as a waterproof board trolley, a two-lining template trolley and the like, so that the dispatching of construction machinery during tunnel construction is facilitated.

The trolley has the advantages that the trolley can be in the telescopic deformation state, so that the trolley has an auxiliary construction state and an emergency refuge state, through the switching of the two working states, the functions of a construction platform required by construction procedures such as tunnel face excavation and supporting during normal tunnel construction can be provided, and a relatively reliable emergency refuge place can be provided for construction workers near the tunnel face during tunnel emergency accidents, so that the personnel safety guarantee capability during dealing with the emergency accidents during construction is greatly improved on the premise of not influencing the normal tunnel construction.

The trolley frame 1 is composed of two frame units in the width direction of a tunnel, the frame units are inverted L-shaped on the section of the tunnel, the openings of the two inverted L-shaped frame units are opposite, the horizontal parts of the two inverted L-shaped frame units are connected by an automatic telescopic rod, two capping steel backing plates 9 are arranged on the horizontal parts of the two inverted L-shaped frame units respectively, one capping steel backing plate 9 is of a hollow structure and is opened towards the other capping steel backing plate, the other capping steel backing plate 9 is connected with a steel sliding plate 95 which can be inserted into the capping steel backing plate with the hollow structure from the opening, two groups of supporting and blocking structures 6 are respectively fixed on the two inverted L-shaped frame units, two groups of walking and supporting structures 8 are respectively arranged on the bottoms of the two inverted L-shaped frame units, the walking and supporting structures 8 comprise walking structures which can rotate at 0-90 degrees, when the automatic telescopic rod is contracted, the walking structures rotate at 90 degrees and can parallelly fold the two frame units, the trolley frame is contracted and folded in the width direction of the tunnel, and under the condition of assisting construction, a steel sliding plate 95 is arranged between two capping steel backing plates and used as a capping steel plate for excavating the middle part of the trolley; when the state is changed into an emergency danger avoiding state, the steel sliding plate slides into the hollow structure capping steel base plate along with the folding of the left and right trolley frame units, and the two capping steel base plates are folded to realize the sealing of the top of the excavation trolley.

The jack of the utility model comprises an oil cylinder and a rod body, and the connection mode is the prior art.

The vertical part of the inverted L-shaped frame unit comprises three telescopic chute upright posts 10, the three chute upright posts 10 are vertically arranged at even intervals along the length direction of the tunnel, the middle lower parts of the three chute upright posts 10 are connected through two horizontally arranged longitudinal steel beams 11, the horizontal part of the inverted L-shaped frame unit is a reversed L-shaped frame 12 in the length direction of the tunnel, the lower part of one side of the reversed L-shaped frame 12 is fixed at the tops of the three chute upright posts 10, the automatic telescopic rods are three, one end of each automatic telescopic rod is connected to the other side of the reversed L-shaped frame 12, each automatic telescopic rod is a telescopic jack 13, each telescopic jack 13 is connected with an oil pipe of a jack hydraulic oil pump system bin 4, each jack hydraulic oil pump system bin 4 is arranged in the trolley frame 1, an inclined strut 14 is obliquely arranged between the lower side of the reversed L-shaped frame 12 and the upper end of the chute upright posts 10, and the inclined, the three sliding groove upright posts, the three telescopic jacks and the three inclined struts are respectively aligned with the two ends and the middle part of the Japanese-type frame in the width direction of the tunnel, one end of an oil cylinder of each telescopic jack is fixed on the lower side of one frame unit, and one end of a rod body is fixed on the lower side of the other frame unit.

The chute upright post rod 10 comprises a lower hollow upright post 101, a middle channel steel upright post 102, an upper I-shaped steel upright post 103 and a large-stroke jack 104, wherein the lower end of the middle channel steel upright post 102 is fixedly connected with the upper end of the lower hollow upright post 101, one part of the lower end of the upper I-shaped steel upright post 103 is slidably positioned in the middle channel steel upright post 102, the other part of the lower end of the upper I-shaped steel upright post 103 is positioned outside the middle channel steel upright post 102, the lower end of an oil cylinder of the large-stroke jack 104 is fixed in the lower hollow upright post 101, the rod bodies of the large-stroke jack 104 are three and arranged in an isosceles triangle shape in the transverse section, two rod bodies are positioned in the middle channel steel upright post 102, the other rod body is positioned outside the middle channel steel upright post 102, the top ends of the three rod bodies are all connected with the bottom end of the upper I-shaped steel upright post, such a chute post is very strong.

Four step steel plate platforms 16 are arranged on the vertical portion of the inverted L-shaped frame unit towards the side face of the tunnel side, the four step steel plate platforms 16 are arranged in an upper row and a lower row in an equal dividing mode, two ends of one side of each lower row of step steel plate platforms 16 are hinged to two adjacent middle channel steel upright columns 102 through hinge shafts 15 respectively, one ends of two lower rocker arms 17 are hinged to the middle portions of two ends of each lower row of step steel plate platforms 16 respectively, the other ends of the two lower row of step steel plate platforms 16 are arranged at the lower ends of the middle channel steel upright columns 102 in a sliding mode through pull-down slider structures 20 respectively, two ends of one side of each upper row of step steel plate platforms 16 are hinged to the upper ends of two adjacent middle channel steel upright columns 102 through hinge shafts 15 respectively or hinged to two adjacent upper I-steel upright columns 103 through hinge shafts 15 respectively, one ends of two upper rocker arms 19 are hinged to the middle portions of two ends of the upper row of step On the upper end of the I-shaped steel upright post 103, as shown in figure 2, when the lower row of step steel plate platforms are connected to the lower end of the middle channel steel upright post through a lower rocker arm and a pull-down slider structure, and the upper row of step steel plate platforms are connected to the upper end of the upper I-shaped steel upright post through an upper rocker arm and a pull-up slider structure, the trolley is suitable for a highway tunnel with a relatively flat tunnel section, as shown in figure 3, when the lower row of step steel plate platforms are connected to the lower end of the middle channel steel upright post through a lower rocker arm and a pull-down slider structure, and the upper row of step steel plate platforms are connected to the middle channel steel upright post through an upper rocker arm and a pull-down slider structure, the trolley is suitable for a railway tunnel with a relatively small aspect ratio of the tunnel section, the width ratio of the lower row of step steel plate platforms is larger than that of the upper row, the method is respectively used for the construction of the side surfaces of the tunnels with different heights.

The pull-down sliding block structure 20 comprises a built-in telescopic jack 201 and an upright sliding block 202, the lower end of an oil cylinder of the built-in telescopic jack 201 is fixedly arranged in a middle channel steel upright post 102, the top end of a rod body is connected with the bottom end of the upright sliding block 202, a sliding groove for the upright sliding block 202 to slide is formed in the middle channel steel upright post 102 towards the side face of a tunnel along the height direction of the middle channel steel upright post, the other end of a lower rocker arm 17 or the other end of an upper rocker arm 19 is hinged to the upright sliding block 202, the built-in telescopic jack 201 is connected with an oil pipe of a hydraulic oil bin 4 of a jack pump system, and the built-in telescopic jack can realize that a step steel plate platform is tightly attached to.

The lifting type sliding block structure 18 comprises an electric rope winder 181, a steel strand 182 and an inverted sliding block 183, wherein the electric rope winder 181 is arranged in a steel box, the steel box is arranged on the top surface of an upper I-shaped steel upright 103, a sliding groove is formed in the upper I-shaped steel upright 103 towards the side surface of a tunnel along the height direction of the upper I-shaped steel upright 103, the inverted sliding block 183 is arranged in the sliding groove in a sliding mode, the top of the inverted sliding block 183 is connected with one end of the steel strand 182, the other end of the steel strand 182 penetrates through the bottom surface of the steel box and is wound on the electric rope winder 181, the other end of an upper rocker arm 19 is hinged to the inverted sliding block 183, and the electric rope winder acts to realize that a step steel plate platform is placed flat and stably.

The supporting structure 6 comprises a welded steel plate 61, a jack oil pump box 62, a plurality of three-stage telescopic jacks 63, a supporting steel beam 64 and a grid rolling door 65, one side of the welded steel plate 61 is fixed on the upper part of the inverted L-shaped frame unit, the jack oil pump box 62 is fixed on the other side of the welded steel plate 61, the upper ends of oil cylinders of the three-stage telescopic jacks 63 are fixedly connected on the bottom surface of the jack oil pump box 62, the lower ends of rod bodies are connected with the supporting steel beam 64, the supporting steel beam 64 is arranged along the width direction of the tunnel, the three-stage telescopic jacks 63 are uniformly arranged between the jack oil pump box 62 and the supporting steel beam 64 at intervals, the upper end of the grid rolling door 65 is fixed on the welded steel plate 61, the lower ends of the grid rolling door 65 are connected with the supporting steel beam 64, the three-stage telescopic jacks 63 are communicated with the jack oil pump box 62 through oil pipes, the grid rolling door 65 can block soil from entering the trolley frame 1, when the trolley is in an auxiliary construction state, the three-stage telescopic jack is contracted, the grid rolling door is rolled up, the construction of the tunnel face is convenient to observe, when the trolley is in an emergency danger avoiding state, the three-stage telescopic jack is extended, the grid rolling door is unfolded, and the three-stage telescopic jack is in the prior art.

The side of the trolley frame 1 departing from the tunnel face is provided with a trolley rear end lifting structure 7, the trolley rear end lifting structure 7 comprises two lifting platforms 72, the two lifting platforms 72 are connected through an X-shaped hinge structure 71, the X-shaped hinge structure 71 is formed by two connecting rods hinged at the middle part, two ends of the two connecting rods are respectively hinged with two ends of the opposite sides of the two lifting platforms 72, two ends of the opposite sides of the two lifting platforms are respectively supported by three-stage lifting jacks 73, the lower ends of the three-stage lifting jacks 73 are fixed on a walking support structure 8, the three-stage lifting jacks 73 are connected with oil pipes of a jack hydraulic oil pump system chamber 4, the jack hydraulic oil pump system chamber 4 is arranged in the trolley frame 1, when the trolley frame is folded in the tunnel width direction, the two lifting platforms are folded under the action of the X-shaped hinge structure 71, and people, materials and construction tools are positioned on the lifting platforms, the step at each level of platform truck is easily gone up in the lift of tertiary lifting jack of accessible, two preferred lift platforms 72 are the recess type and two free ends of its upper portion are outwards turned over and are formed the turn-ups, the top and the turn-ups bottom surface of tertiary lifting jack 73 link to each other, be fixed with capping steel tie plate 9 on two lift platforms 72 respectively, one of them capping steel tie plate 9 is hollow structure and its another capping steel tie plate side opening of orientation, be connected with on another capping steel tie plate and can follow the steel slide 95 that the opening inserted in the capping steel tie plate of taking hollow structure.

The walking support structure 8 comprises a support steel skeleton, the support steel skeleton comprises a plurality of n-shaped skeletons 81 which are uniformly arranged along the length direction of the tunnel at intervals, the upper middle parts of two adjacent n-shaped skeletons 81 are connected by steel beams 88, the lower ends of a chute upright post rod 10 and a three-stage lifting jack 73 are fixed on the middle parts of the steel beams 88, two free ends of the lower part of the n-shaped skeletons 81 are respectively provided with a short-distance lifting jack 82 which vertically extends downwards, the free end of a rod body of the short-distance lifting jack 82 is connected with the middle part of a disc-shaped expanding rigid cushion block 83, the walking structure is arranged on the middle part of the steel beams, the walking structure comprises a roller power chamber 85, the steel beams 88 are composed of two steel beam monomers, the opposite ends of the two steel beam monomers are respectively connected with the opposite sides of the roller power chamber 85, the opposite sides of the two steel beam monomers are, the upper end and the lower end in the supporting rod 92 are respectively provided with a chain wheel, a chain 90 is sleeved on the two chain wheels in a transmission way, the upper chain wheel is sleeved on a driving shaft which is connected with an output shaft of a motor, the lower chain wheel is sleeved on a rotating shaft, the two ends of the rotating shaft respectively penetrate through the two sides of the supporting rod 92, the two ends of the rotating shaft positioned outside the supporting rod 92 are respectively sleeved with a roller 84, a gear type rotating flange 89 is a flange which is circumferentially provided with driven teeth, one end of an oil cylinder of two direction adjusting jacks 93 is respectively fixed on the upper surfaces of two adjacent n-shaped frameworks 81, the free end of the rod body of the two direction adjusting jacks 93 is provided with main driving teeth along the length direction thereof, the rod body of the two direction adjusting jacks 93 extends into a roller power chamber 85 and is respectively positioned at the two opposite sides of the gear type rotating flange 89, the main driving teeth are engaged with the driven teeth, the middle part of the, a driving mechanism for driving the drill rod 86 to rotate is arranged in the drill rod power chamber 87, the short-distance lifting jack 82 and the direction-adjusting jack 93 are respectively connected with an oil pipe of the hydraulic oil pump system bin 4 of the jack, the drill rod 86 can provide anti-sliding and anti-overturning force for the excavation trolley, and when the trolley is in an auxiliary construction state, the short-distance lifting jack 82 extends, the expanded steel cushion block 83 is in contact with the ground, and the trolley can be stabilized; along with the advance of tunnel face construction, when the trolley needs to advance, the short-distance lifting jack 82 is contracted, the idler wheels 84 are in contact with the ground, at the moment, the motor acts, the upper end chain wheel drives the lower end chain wheel to rotate through the chain 90, so that the idler wheels 84 at the two ends of the rotating shaft roll, and finally the trolley advances; when emergency occurs in tunnel excavation, the short-distance lifting jack 82 extends and enables the direction-adjusting jack 93 to extend, the main transmission teeth are meshed with the auxiliary transmission teeth to enable the rotating flange 89 to rotate 90 degrees, then the short-distance lifting jack 82 contracts, the roller 84 contacts with the ground to restart the motor to roll, meanwhile, the telescopic jack 13 contracts to enable the trolley frame to contract and fold in the width direction of the tunnel, and finally the short-distance telescopic jack 82 extends to expand the steel cushion block 83 to contact with the ground and enable the drill rod 86 to drill into the ground through the drill rod power chamber 87.

The survival guarantee article supply chamber 2, the oxygen storage supply chamber 3, the jack hydraulic oil pump system chamber 4 and the electronic alarm system chamber 5 are in a right trapezoid shape on the section of a tunnel, two right-angle sides are respectively fixed on the vertical part and the horizontal part of the inverted L-shaped frame unit, the survival guarantee article supply chamber 2, the oxygen storage supply chamber 3, the jack hydraulic oil pump system chamber 4 and the electronic alarm system chamber 5 are provided with doors 32 on the inclined planes, the doors can be used for daily equipment maintenance or emergency article replacement, the bottom surfaces of the survival guarantee article supply chamber 2 and the oxygen storage supply chamber 3 are provided with electric flip steel doors 33, each electric flip steel door comprises a steering engine and a steel door, one end of each steel door is connected with the survival guarantee article supply chamber 2 or the oxygen storage supply chamber 3 through a rotating shaft, the rotating shaft is connected with an output shaft of the steering engine, the switches of the steering engines are arranged on the upper I-steel upright posts, the survival guarantee, the survival guarantee article supply room has better water insulation capacity, the survival guarantee article has drinking bottled water, compressed biscuits, medical first-aid kits, electric torches and the like, one end of a rope 35 is connected with the survival guarantee article, the other end of the rope is fixed on the inner side surface of an electric flip-type steel door 33, trapped persons can pull steel ropes to obtain corresponding substances from the survival guarantee article supply room as required, at least two groups of oxygen tanks are arranged in the oxygen storage supply room 3, a plurality of oxygen hoods are respectively connected with the two oxygen tanks through pipelines, switches are arranged on the pipelines, the oxygen hoods are hung on the inner side surface of the electric flip-type steel door 33, the oxygen storage supply room has better sealing and shockproof capacities, after the trapped persons take off the oxygen surface hoods, the switches are opened to breathe, a storage battery and an accident alarm controller are arranged in the electronic alarm system bin 5, the storage battery supplies power to a trolley, and the accident alarm controller is electrically connected with a tunnel entrance alarm, the bottom surface of the electronic alarm system bin 5 is provided with an illuminating lamp 36, the electronic system bin has extremely high sealing property and insulating property, the trolley is provided with a plurality of danger avoiding control switches 74, the danger avoiding control switches 74 are respectively connected with a jack balance valve, a three-stage telescopic jack 63, a grid rolling door 65, a motor and an accident alarm controller in the hydraulic oil pump system bin 4, the trolley is contracted by pressing the danger avoiding control switches, and the alarm outside a tunnel is controlled to alarm through the alarm controller.

The use method of the excavation trolley comprises the following steps:

1. in the normal construction stage of the tunnel, the equipment is used as a construction platform for tunnel excavation and is in an auxiliary construction state of an excavation trolley, as shown in figure 1 (a supporting and blocking structure 6 is in front and close to an excavation face; in addition, the two capping steel base plates are respectively arranged on the top surfaces of the trolley frame 1 and the lifting structure (7) at the rear end of the trolley, so that a plane space for personnel to stand and articles to stack is provided;

2. along with the propulsion of the tunnel face, the equipment relies on walking bearing structure 8 to realize self-advancing, and specific process includes: in the process of excavating the tunnel face, the short-distance lifting jack 82 extends to enable the expanded steel cushion block 83 to be closely attached to the ground, so that the stability of the equipment is ensured; after the tunnel is excavated, the short-range lifting jack 82 retracts, so that the expanded steel cushion block 83 is lifted off the ground, the roller 84 is in contact with the ground, and the roller power chamber 85 drives the roller 84 to rotate to realize self-propulsion of the equipment;

3. in the work progress, equipment relies on platform truck rear end elevation structure 7 to assist personnel to go up the platform truck to can transport articles such as I-steel, little pipe, stock the platform truck, specific process is: the three-stage lifting jack 73 is stretched in three sections, when the three-stage lifting jack 73 is completely contracted, the lifting platform 72 is close to the ground, and people and articles can easily climb up; after that, every time the three-stage lifting jack 73 extends by one stage, the lifting platform 72 rises by one step and reaches the heights of the lower step, the middle step and the upper step of the trolley in sequence, so that personnel and articles can climb on any one stage of working platform;

4. after a tunnel accident happens, people working on the excavation trolley can quickly descend to the ground by using the trolley rear-end lifting structure 7, the excavation trolley danger avoiding control switch 74 is started (an electronic alarm system bin simultaneously makes an alarm at a tunnel entrance alarm through an alarm controller), the excavation trolley is switched to an excavation trolley emergency refuge state from an excavation trolley auxiliary construction state, and the process can be subdivided into the following steps:

1) the rotating flange 89 of the walking support structure 8 drives the rollers 84 to realize 90-degree steering, the short-distance lifting jack 82 retracts thereafter, and the rollers 84 on the two sides land and roll inwards to provide inward folding force for the lower part of the excavation trolley; meanwhile, the three groups of telescopic jacks 13 on the upper portion of the excavation trolley retract to provide an inward folding force for the upper portion of the excavation trolley, the two forces are mutually matched, so that the excavation trolley is folded at the left side and the right side, and the excavation trolley is switched from the auxiliary construction state to the first emergency danger avoiding state, as shown in fig. 12 and 13. At this time, the X-shaped hinge structure 73 on the lifting structure 7 at the rear end of the trolley rotates under the action of the closing force, and the lifting structure 7 at the rear end of the trolley is closed along with the closing force; in addition, the steel slide plate 95 is inserted into the capping steel shim plate 9 having a hollow structure, and the capping steel shim plate 9 provided on the top surfaces of the carriage frame 1 and the carriage rear end elevating structure 7 is folded together.

2) After the trolley is closed, the short-range lifting jack 82 extends to enable the expanding steel cushion block 83 to be tightly pressed against the ground, the drill rod power chamber 87 provides power, and the drill rod 86 is driven into the ground to a certain depth, so that the overall stability of the excavation trolley is guaranteed. Meanwhile, the upper-row step steel plate platform 16 is lifted to be closely attached to the excavation trolley by the upper-lifting type sliding block structure 18, the lower-row step steel plate platform 16 is pulled down to be closely attached to the excavation trolley by the lower-pulling type sliding block structure 20, and the excavation trolley is switched to an emergency danger avoiding state II, which is shown in fig. 14 specifically.

3) The large-stroke jack 104 retracts, so that the middle channel steel upright post 102 and the upper i-steel upright post 103 are folded, the upper portion of the excavation trolley descends by one step height, and the excavation trolley is switched to an emergency risk avoiding state III, which is specifically shown in fig. 15.

4) The extension of the third telescopic jack 63 of the retaining structure 6 drives the retaining steel beam 64 and the grid rolling door 65 to seal the front end of the excavation trolley, and the excavation trolley is switched to the emergency risk avoiding state four, as shown in fig. 16. Meanwhile, the lifting structure 7 at the rear end of the trolley is also lowered to the position that the top of the lifting platform 72 is flush with the frame (12) shaped like a Chinese character ri, the upper half part of the rear end of the excavation trolley is semi-closed, and a gap at the lower half part is reserved for trapped people to go in and out; in addition, the illuminating lamp (36) on the bottom surface of the electronic alarm system cabin (5) is automatically turned on to provide necessary illumination for personnel.

5. The excavation platform truck after the completion of warping can block the earth impact of face the place ahead and both sides, can effectively prevent in the tunnel constructor directly bear face department soil stone and strike the risk, and afterwards, the constructor visual tunnel accident situation in the tunnel judges whether flee from the tunnel. If the condition is escaped, the tunnel should be escaped preferentially; if the escape is judged to have larger risk, the vehicle can enter the excavation trolley to avoid the risk. If the vehicle enters the excavation trolley to avoid danger, the danger avoiding device can be further started to avoid danger so as to wait for external rescue, and the method specifically comprises the following steps:

1) constructors enter the excavation trolley in an emergency danger avoiding state, and the electric flip type steel door 33 at the lower part of the survival guarantee article supply chamber 2 and the oxygen storage supply chamber 3 is opened.

2) The trapped person takes off the oxygen mask belt from the inner side of the electric flip type steel door 33 below the oxygen storage and supply chamber 3 and opens the switch to supply oxygen for breathing.

3) The trapped person obtains items necessary for survival such as water, food, medical aids, tools, and the like from the survival support item supply room 2 as needed. Thereafter, the trapped person relies on the protection of the excavation trolley to wait for external rescue.

In daily state, the construction team regularly updates the emergency rescue substances in the storage and security goods supply chamber 2 and the oxygen storage and supply chamber 3 through the door 32, and carries out daily maintenance on the arrangement in the jack hydraulic oil pump system chamber 4 and the electronic alarm system chamber 5.

When the tunnel excavation method is changed, the tunnel face does not need the tunnel excavation trolley temporarily, and the tunnel has no spare space for storing the tunnel excavation trolley, the tunnel excavation trolley is switched to the emergency state three as shown in fig. 15 according to the process. Thereafter, the short-distance lifting jack 82 retracts, so that the expanding steel cushion block 83 is lifted off the ground, the roller 84 is in contact with the ground, the roller power chamber 85 drives the roller 84 to rotate, the excavation trolley drives to the outside of the hole at the uniform speed, and the roller 84 can be adjusted in direction through the gear type rotating flange 89 if an obstacle is encountered in the process.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims (11)

1. The utility model provides a can promptly keep away telescopic tunnel excavation platform truck of danger which characterized in that: including square platform truck frame (1), platform truck frame (1) can stretch out and draw back at tunnel width direction and direction of height, platform truck frame (1) top surface is equipped with capping steel backing plate (9), capping steel backing plate (9) seal platform truck frame (1) top surface, is equipped with step steel sheet platform (16) on platform truck frame (1) side towards tunnel both sides face respectively, step steel sheet platform (16) can be stably the level condition or seal the platform truck frame (1) left and right sides side of contraction state, and platform truck frame (1) side towards tunnel face is equipped with telescopic retaining structure (6), retaining structure (6) seals platform truck frame (1) front side of contraction state, platform truck frame (1) bottom is equipped with walking bearing structure (8), be equipped with in platform truck frame (1) and survive guarantee article supply chamber (2), An oxygen storage and supply chamber (3) and an electronic alarm system chamber (5).

2. The telescopic tunnel excavation trolley capable of avoiding danger urgently of claim 1, is characterized in that: the trolley frame (1) is composed of two frame units in the width direction of the tunnel, the frame units are inverted L-shaped on the section of the tunnel, the openings of the two inverted L-shaped frame units are opposite, the horizontal parts of the two inverted L-shaped frame units are connected by an automatic telescopic rod, the two capping steel backing plates (9) are respectively arranged on the horizontal parts of the two inverted L-shaped frame units, one of the top-sealing steel backing plates (9) is of a hollow structure and is opened towards the other top-sealing steel backing plate side, the other top-sealing steel backing plate (9) is connected with a steel sliding plate (95) which can be inserted into the top-sealing steel backing plate with the hollow structure from the opening, the supporting structures (6) are divided into two groups and are respectively fixed on the two inverted L-shaped frame units, the walking supporting structures (8) are divided into two groups and are respectively arranged on the bottoms of the two inverted L-shaped frame units, the walking support structure (8) comprises a walking structure capable of rotating within 0-90 degrees.

3. The telescopic tunnel excavation trolley capable of avoiding danger urgently according to claim 2, is characterized in that: the vertical part of the inverted L-shaped frame unit comprises three telescopic chute upright posts (10), the three chute upright posts (10) are vertically arranged at even intervals along the length direction of the tunnel, the middle lower parts of the three chute upright posts (10) are connected through two horizontally arranged longitudinal steel beams (11), the horizontal part of the inverted L-shaped frame unit is a rectangular frame (12) in the length direction of the tunnel, the lower part of one side of the rectangular frame (12) is fixed at the tops of the three chute upright posts (10), the number of the automatic telescopic rods is three, one end of each automatic telescopic rod is respectively connected to the other side of the B-shaped frame (12), the automatic telescopic rod is a telescopic jack (13), the telescopic jack (13) is connected with an oil pipe of a jack hydraulic oil pump system bin (4), the jack hydraulic oil pump system cabin (4) is arranged in the trolley frame (1), an inclined strut (14) is obliquely arranged between the lower side of the B-shaped frame (12) and the upper end of the chute upright post rod (10).

4. The telescopic tunnel excavation trolley capable of avoiding danger urgently according to claim 3, is characterized in that: the chute upright post rod (10) comprises a lower hollow upright post (101), a middle channel steel upright post (102), an upper I-shaped steel upright post (103) and a large-stroke jack (104), the lower end of the middle channel steel upright post (102) is fixedly connected with the upper end of the lower hollow upright post (101), one part of the lower end of the upper I-shaped steel upright post (103) is slidably positioned in the middle channel steel upright post (102), the other part is positioned outside the middle channel steel upright post (102), the lower end of an oil cylinder of the large-stroke jack (104) is fixed in the lower hollow upright post (101), the three rod bodies of the large-stroke jack (104) are arranged in an isosceles triangle shape in the transverse section, wherein two rod bodies are positioned in the middle channel steel upright post (102), the other rod body is positioned outside the middle channel steel upright post (102), the top ends of the three rod bodies are all connected with the bottom end of the upper I-shaped steel upright post (103), and the large-stroke jack (104) is connected with an oil pipe of the jack hydraulic oil pump system bin (4).

5. The telescopic tunnel excavation trolley capable of avoiding danger urgently according to claim 4, is characterized in that: four step steel plate platforms (16) are arranged on the vertical part of the inverted L-shaped frame unit towards the side surface of the tunnel, the four step steel plate platforms (16) are arranged in an upper row and a lower row in an equal division manner, two ends of one side of the lower row of step steel plate platforms (16) are respectively hinged on two adjacent middle channel steel upright columns (102) through hinge shafts (15), one ends of two lower rocker arms (17) are respectively hinged on the middle parts of two ends of the lower row of step steel plate platforms (16), the other ends of the two lower rocker arms are respectively arranged on the lower ends of the middle channel steel upright columns (102) in a sliding manner through a pull-down slider structure (20), two ends of one side of the upper row of step steel plate platforms (16) are respectively hinged on the upper ends of two adjacent middle channel steel upright columns (102) through hinge shafts (15) or are respectively hinged on two adjacent upper I-steel upright columns (103) through hinge shafts (15), one ends of, the other end is respectively arranged on the middle part of the middle channel steel upright post (102) in a sliding way through a pull-down sliding block structure (20) or is respectively arranged on the upper end of the upper I-shaped steel upright post (103) in a sliding way through an upper lifting sliding block structure (18).

6. The telescopic tunnel excavation trolley capable of avoiding danger urgently of claim 5, is characterized in that: the pull-down sliding block structure (20) comprises a built-in telescopic jack (201) and an upright sliding block (202), the lower end of an oil cylinder of the built-in telescopic jack (201) is fixedly arranged in a middle channel steel upright post (102), the top end of a rod body is connected with the bottom end of the upright sliding block (202), a sliding groove for the upright sliding block (202) to slide is formed in the middle channel steel upright post (102) towards the side face of the tunnel along the height direction of the middle channel steel upright post, the other end of a lower rocker arm (17) or the other end of an upper rocker arm (19) is hinged to the upright sliding block (202), and the built-in telescopic jack (201) is connected with an oil pipe of a jack hydraulic oil pump system bin (4).

7. The telescopic tunnel excavation trolley capable of avoiding danger urgently of claim 5, is characterized in that: upward lift formula slider structure (18) include electronic serving machine (181), steel strand wires (182) and inverted slide block (183), electronic serving machine (181) sets up in a steel box, the steel box sets up on upper portion I-steel stand (103) top surface, upper portion I-steel stand (103) are equipped with the spout along its direction of height towards tunnel lateral surface side, inverted slide block (183) slide be equipped with in the spout, inverted slide block (183) top links to each other with steel strand wires (182) one end, steel strand wires (182) other end passes steel box bottom surface and twines on electronic serving machine (181), the other end of going up rocking arm (19) articulates on inverted slide block (183).

8. The telescopic tunnel excavation trolley capable of avoiding danger urgently according to claim 2, is characterized in that: the supporting structure (6) comprises a welding steel plate (61), a jack oil pump box (62), a plurality of three-level telescopic jacks (63), a supporting steel beam (64) and a grid rolling door (65), one side of the welding steel plate (61) is fixed on the upper part of an inverted L-shaped frame unit, the jack oil pump box (62) is fixed on the other side of the welding steel plate (61), the upper ends of oil cylinders of the three-level telescopic jacks (63) are fixedly connected onto the bottom surface of the jack oil pump box (62), the lower end of a rod body is connected with the supporting steel beam (64), the supporting steel beam (64) is arranged along the width direction of the tunnel, the three-level telescopic jacks (63) are uniformly arranged between the jack oil pump box (62) and the supporting steel beam (64) at intervals, the upper end of the grid rolling door (65) is fixed on the welding steel plate (61), and the lower end of the grid rolling door is connected with the supporting steel beam (64), the three-stage telescopic jacks (63) are communicated with a jack oil pump box (62) through oil pipes.

9. The telescopic tunnel excavation trolley capable of avoiding danger urgently according to claim 2, is characterized in that: the side of a trolley frame (1) deviating from a tunnel face is provided with a trolley rear-end lifting structure (7), the trolley rear-end lifting structure (7) comprises two lifting platforms (72), the two lifting platforms (72) are connected through an X-shaped hinged structure (71), the X-shaped hinged structure (71) is formed by two connecting rods hinged to each other at the middle part, two ends of the two connecting rods are hinged to two ends of the opposite side of the two lifting platforms (72) respectively, the two lifting platforms deviate from the two ends of the opposite side and are supported by three-level lifting jacks (73) respectively, the lower ends of the three-level lifting jacks (73) are fixed on a walking supporting structure (8), the three-level lifting jacks (73) are connected with an oil pipe of a jack hydraulic oil pump system bin (4), and the jack hydraulic oil pump system bin (4) is arranged in the trolley frame (1).

10. The telescopic tunnel excavation trolley capable of avoiding danger urgently according to claim 3, is characterized in that: the walking support structure (8) comprises a support steel skeleton, the support steel skeleton comprises a plurality of n-shaped skeletons (81) which are uniformly arranged at intervals along the length direction of the tunnel, the middle parts of the upper ends of two adjacent n-shaped skeletons (81) are connected by a steel beam (88), the lower ends of a chute upright post rod (10) and a three-level lifting jack (73) are fixed on the middle parts of the steel beam (88), two free ends of the lower part of the n-shaped skeleton (81) are respectively provided with a vertical and downward extending short-distance lifting jack (82), the free end of a rod body of the short-distance lifting jack (82) is connected with the middle part of a disc-shaped expanding rigid cushion block (83), the walking structure is arranged on the middle part of the steel beam and comprises a roller power chamber (85), the steel beam (88) is composed of two steel beam monomers, the opposite ends of the two steel beam monomers are respectively connected with the opposite sides of the roller power chamber (85), and the opposite, the level is equipped with gear formula rotating flange (89) in gyro wheel power house (85), rotating flange (89) lower part coaxial coupling has cavity bracing piece (92), the lower extreme is equipped with the sprocket respectively about in bracing piece (92), and a chain (90) transmission overlaps on two sprockets, and upper portion sprocket cover is on a driving shaft, the driving shaft links to each other with a motor output shaft, and lower part sprocket cover is in a pivot, the pivot both ends are run through bracing piece (92) both sides respectively, are located and overlap respectively on the outer pivot both ends of bracing piece (92) and are equipped with gyro wheel (84), and rotating flange (89) are equipped with the flange from the driving tooth for week, and two are transferred to hydro-cylinder one end of jack (93) and fix respectively on adjacent two n type skeleton (81) upper surface, are transferred to and are equipped with the main driving tooth along its length direction on the body of rod free end of jack (93), and two are transferred to the body of rod of jack (93) and stretch into gyro wheel power house (85) and are located rotating (89) The hydraulic oil pump system comprises two opposite sides, main transmission teeth and auxiliary transmission teeth are meshed, a drill rod power chamber (87) is arranged in the middle of the n-shaped framework (81), a drill rod (86) extending vertically and downwards is arranged on the lower portion of the drill rod power chamber (87), a driving mechanism for driving the drill rod to rotate is arranged in the drill rod power chamber (87), and the short-distance lifting jack (82) and the direction-adjusting jack (93) are connected with an oil pipe of the jack hydraulic oil pump system bin (4) respectively.

11. The telescopic tunnel excavation trolley capable of avoiding danger urgently according to claim 3, is characterized in that: survival guarantee article supply chamber (2), oxygen storage supply chamber (3), jack hydraulic oil pump system storehouse (4) and electronic alarm system storehouse (5) are right trapezoid on the tunnel section, and two right-angle sides are fixed respectively on the vertical portion and the horizontal portion of the inverted L-shaped frame unit, the inclined planes of survival guarantee article supply chamber (2), oxygen storage supply chamber (3), jack hydraulic oil pump system storehouse (4) and electronic alarm system storehouse (5) are provided with doors (32), the bottom surfaces of survival guarantee article supply chamber (2) and oxygen storage supply chamber (3) are provided with electric flip-type steel doors (33), survival guarantee articles are placed in survival guarantee article supply chamber (2), one end of a rope (35) is connected with the survival guarantee articles, the other end is fixed on the inner side of electric flip-type steel doors (33), at least two sets of oxygen tanks are arranged in oxygen storage supply chamber (3), a plurality of oxygen hoods pass through the pipeline and link to each other with two oxygen tanks respectively, be equipped with the switch on the pipeline, the oxygen hood is hung and is put on electronic flip formula steel door (33) medial surface, be equipped with battery, accident alarm controller in electronic alarm system storehouse (5), the battery is the platform truck power supply, accident alarm controller is connected with tunnel portal alarm electricity, be equipped with light (36) on electronic alarm system storehouse (5) bottom surface, be equipped with a plurality of dangerous control switch (74) of keeping away on the platform truck, keep away dangerous control switch (74) and link to each other with jack balance valve, tertiary flexible jack (63), net rolling slats door (65) and the accident alarm controller in hydraulic oil pump system storehouse (4) respectively.

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