WO2013053225A1

WO2013053225A1 - Rescue machine for tunnel collapses

Info

Publication number: WO2013053225A1
Application number: PCT/CN2012/075053
Authority: WO
Inventors: 李建斌; 何於琏
Original assignee: 中铁隧道装备制造有限公司
Priority date: 2011-10-13
Filing date: 2012-05-03
Publication date: 2013-04-18
Also published as: CN102758646A; CN102758646B; SG11201401332SA

Abstract

Disclosed is a rescue machine for tunnel collapses, comprising a cutting head (1) with a diameter-alteration function; a spiral conveyance shaft (2); a drive unit for rotation of the spiral conveyance shaft; a rescue cylinder (5); a propulsion system; a hydraulic pump station; an under-chassis (20); a power distribution cabinet (18); and a control cabinet (19), the spiral conveyance shaft being sheathed in the rescue cylinder. The rescue machine adopts a cutting head with a diameter-alteration function to perform rock cutting through the collapsed earthen mass, thus it is possible to adjust the excavation diameter in a timely manner during the propulsion process. The muck generated from the cutting is discharged out of the rear portion of the rescue cylinder by the spiral conveyance shaft. The rescue cylinder is also propelled forward simultaneously with the propulsion of the spiral conveyance shaft, and after the spiral conveyance shaft has been drawn out, the rescue cylinder constitutes a safe channel enabling people trapped by the collapse in the process of tunnel excavation to be rescued. Moreover, both the spiral conveyance shaft and the rescue cylinder in the rescue machine are made up of multiple sections, facilitating long-distance tunneling; and the front end of the spiral conveyance shaft is tensioned using steel cables, reducing down-warping of the spiral conveyance shaft and ensuring normal operation thereof.

Description

Tunnel collapse lifesaving machine

The invention belongs to the field of machinery, and particularly relates to rescue equipment, in particular to a tunnel collapse lifesaving machine. Background technique

During the tunnel excavation, due to geological reasons, landslide events sometimes occur. If the landslide occurs behind the operator at the tunnel excavation face, the operator and the passage behind the tunnel may be cut off, in a state of lack of oxygen, lack of drinking water, and lack of food. If there are injured people, they will be in danger because they cannot get timely treatment. The traditional practice of emergency rescue for trapped people is to use rescue tools such as excavators, loaders, multi-purpose rigs, rock drills, etc. to rescue or drill. Due to the large amount of earthwork, large disturbance of the soil and possible local blasting, there are disadvantages of slow rescue speed, poor safety, poor working environment and possible secondary collapse.

In order to overcome the above shortcomings, it is necessary to introduce a novel and special tunnel landslide rescue machine, aiming at obtaining the fastest rescue speed with minimal earthwork workload, minimizing disturbance to the soil and avoiding blasting. And the best security.

The present invention aims to introduce a special lifesaving machine, and no reports on such tunnel landslide lifesaving machines have been reported at home and abroad.

Summary of the invention

The object of the present invention is to provide a tunnel landscaping life-saving machine which can quickly, safely and humanizely rescue a person trapped by a landslide during tunnel excavation.

The object of the invention is achieved by the following technical solutions: it comprises a cutting head with a reducing function, a screw conveying shaft, a screw conveying shaft rotary driving device, a lifesaving cylinder, a propulsion system, a hydraulic pumping station, a chassis, a power distribution cabinet and a control cabinet. The spiral conveying shaft sleeve is disposed in the life-saving cylinder, and a gap is provided between the spiral conveying shaft and the inner side wall of the life-saving cylinder, and the cutting head having the variable diameter function is fixed to the front end of the spiral conveying shaft through the connecting plate, and the spiral conveying shaft rotating driving device is disposed on the sliding base The rear end of the screw conveying shaft is connected with the screw conveying shaft rotation driving device, and the sliding pair along the length direction of the chassis is provided between the sliding base and the chassis, and the propulsion system The utility model comprises a propulsion cylinder, and a propulsion cylinder bracket is arranged at a rear end of the chassis. The two ends of the propulsion cylinder are respectively connected to the propulsion cylinder bracket and the sliding base. The hydraulic pump station comprises a fuel tank, a pump station motor, a hydraulic pump and a valve block, and the pump station motor drives the hydraulic pressure. The pressure oil of the pump is connected to the propulsion cylinder through the pipeline and the valve block. The control cabinet is provided with a controller. The controller is connected with the rotary drive shaft rotary drive device, the pump station motor and the control end of the valve block, and the power distribution cabinet. Providing power to a cutting head having a reducing function, a screw conveying shaft rotary driving device, a pump station motor and a valve block, the cutting head having a reducing function including a cutter head, a cutter mounted on the cutter head, and a side scraper telescopic mechanism The hydraulic control device is coupled to the side scraper telescopic mechanism, and the scraper telescopic mechanism is installed in the tapping groove of the cutter disc, and the scraper telescopic mechanism is driven by the driving cylinder in the hydraulic control device.

The screw conveying shaft rotary driving device comprises a driving motor and a hollow shaft reducer, the driving motor is arranged on the sliding base, the driving motor output shaft is connected with the hollow shaft reducer, and the hollow shaft reducer output shaft passes through the coupling and the spiral conveying shaft. The back ends are connected.

The spiral conveying shaft comprises a hollow shaft and a conveying spiral, the conveying spiral is composed of a steel plate, the conveying screw is welded to the outer side of the hollow shaft, and the spiral conveying shaft auxiliary device is further provided in the tunnel collapse lifesaving machine, which comprises an electric winch, a wire rope, a mandrel and a bearing. Seat, the bearing seat is cylindrical, the bearing seat is welded to the front end of the hollow shaft, and the cutting head of the cutting head with the variable diameter function is welded to the front end of the bearing seat, the bearing seat is provided with a bearing, and the mandrel is arranged in the inner hole of the bearing, in the mandrel The rear part is provided with an angular contact bearing, the inner ring of the angular contact bearing is in a transitional fit with the mandrel, the outer ring of the angular contact bearing is interference fit with the bearing seat, and a retaining ring is arranged at the front part of the bearing seat, and the front end of the mandrel and the block are arranged A thrust bearing is arranged between the rings, the electric winch is fixed on the sliding base, one end of the wire rope is wound on the wire rope reel of the electric winch, and the other end is connected with the rear end of the mandrel.

The front end of the hollow shaft reducer is fixedly connected to one end of the squirrel cage thrust frame, and the other end of the squirrel cage thrust frame is connected to the rear end of the rescue tube through the end transition joint of the rescue tube, and the coupling is located inside the squirrel cage thrust frame.

An auxiliary cylinder bracket is fixed at the front of the chassis, and an auxiliary cylinder is fixed on the auxiliary cylinder bracket. The piston rod of the auxiliary cylinder corresponds to the end transition joint of the rescue cylinder, and the vertical distance between the piston rod of the auxiliary cylinder and the center line of the rescue cylinder Less than the distance between the edge of the end of the life jacket end transition joint and the centerline of the life preserver. A guide rail along the longitudinal direction thereof is arranged on the chassis, and a sliding shoe is arranged at the bottom of the sliding base to cooperate with the guide rail to form a sliding pair.

The spiral conveying shaft is formed by connecting at least two spiral conveying shaft segments, and the lifesaving cylinder is formed by connecting at least two lifesaving cylinder segments, the length of the spiral conveying shaft section is 4nT6m, and the length of the lifesaving cylinder section is 4m~ 6m.

A conical surface is connected between two adjacent life-saving cylinder segments, an outer tapered surface is arranged on an outer side of one end of the life-saving cylinder section, and an inner tapered surface is provided on an inner side of the other end of the life-saving cylinder section, the outer tapered surface and the inner cone surface The tapered surface is matched, and the taper of the outer tapered surface and the inner tapered surface is 1:1 (Γ1:15).

The chassis is made up of two boxes connected by bolts.

The tunnel landscaping life-saving machine further comprises a life-saving bed, wherein the life-saving bed comprises a bed body, a bed sliding shoe, a hood and a safety belt, and a hood is arranged at one end of the bed through a hinge, and the bed sliding shoe is arranged at the lower part of the bed The cross-sectional outer contour of the bed shoe is semi-circular, and the outer diameter of the bed shoe is smaller than the inner diameter of the life-saving cylinder.

The cutting head of the present invention is installed at the front end of the screw conveying shaft, and uses the rotation and axial advancement of the cutting head to perform rock breaking cutting on the slag after the landslide, and the cut muck is pushed by the rotation of the spiral conveying shaft, and pushes it To the rear, discharge from the rear end of the lifesaving tube. In order to reduce the penetration resistance of the lifesaving cylinder to the landslide body, a cutting head having a variable diameter function is adopted, and the edge scraping blade of the cutting head can be expanded and contracted in the radial direction under the action of the driving hydraulic cylinder, thereby changing the cutting head excavation diameter. At the beginning of the tunneling, the scraper is extended outwardly so that the diameter of the excavation is slightly larger than the outer diameter of the life preserver, so that the penetration resistance of the life preserver is greatly reduced. After the life-saving cylinder passes through the landslide, the side scraper of the cutting head is retracted so that the rotating diameter is smaller than the inner diameter of the life-saving cylinder, the auxiliary cylinder is extended, the life-saving cylinder is pushed forward, and the thrust cylinder is retracted to the last end, and the electric winch is started. The screw conveyor shaft is pulled out and removed one by one, and finally a transparent space is formed in the life-saving cylinder. The trapped person climbs out from the life-saving cylinder or rescues the trapped person through the life-saving bed to complete the life-saving process. With this life-saving machine, people who are trapped due to landslides during tunnel excavation can be rescued quickly, safely and humanized.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention. Figure 2 is a schematic view of the working state of the present invention.

Fig. 3 is a schematic view showing the slagging device of the life-saving machine, that is, a partial enlarged view of I in Fig. 2.

Fig. 4 is a schematic view of a cutting head having a variable diameter function, that is, a partial enlarged view of IV in Fig. 3.

Fig. 5 is a schematic view of the screw conveying shaft auxiliary device, that is, a partial enlarged view of V in Fig. 3.

Figure 6 is a schematic diagram showing the length of the lifeline screw conveyor shaft and the life-saving cylinder, that is, the partial enlarged view of II in Figure 2.

Fig. 7 is a schematic view showing the structure of the life-saving cylinder body, that is, a partial enlarged view of VI in Fig. 6.

Figure 8 is a partial enlarged view of III in Figure 2.

Figure 9 is a partial enlarged view of VII in Figure 8.

Figure 10 is a plan view of Figure 8.

Figure 11 is a partial enlarged view of the cover of Figure 10.

Figure 12 is a schematic view showing the structure of a life-saving bed in the present invention.

Figure 13 is a plan view of Figure 12.

Figure 14 is a left side view of Figure 12.

detailed description

Example 1

As shown in Figures 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, and 11, the arrow in Figure 2 shows the tunneling direction. The serial numbers are as follows: 1. Cutting head with variable diameter function, 2. Screw conveying shaft, 3. Drive motor, 4. Hollow shaft reducer, 5. Life-saving cylinder, 6. Propulsion cylinder, 7. Auxiliary cylinder, 8. Sliding base, 9, sliding shoes, 10, guide rails, 11, electric winch, 12, angular contact bearing, 13, thrust bearing, 14, fuel tank, 15, pump station motor, 16, hydraulic pump, 17, valve block, 18, Power distribution cabinet, 19, control cabinet, 20, chassis, 21, bed, 22, bed sliding shoes, 23, hood, 24, coupling, 25, squirrel-cage thrust frame, 26, life-saving cylinder end Transition joint, 27, side scraper, 28, wire rope, 29, hinge, 30, mandrel, 31, bearing housing, 32, screw conveyor shaft extension joint, 33, seat belt, 34, landslide, 35, high-strength bolt, 36. Propulsion cylinder bracket, 37. Auxiliary cylinder bracket. In this embodiment, the tunnel landslide life-saving machine includes a cutting head having a variable diameter function, a screw conveying shaft 2, a screw conveying shaft rotation driving device, a life-saving cylinder 5, a propulsion system, a hydraulic pumping station, a chassis 20, and a power distribution cabinet. 18 and the control cabinet 19, the life-saving cylinder 5 preferably has a cylindrical shape, which is convenient for propulsion, and adopts a life-saving cylinder 5 having an inner diameter of 600 , to ensure the movable space of the rescued person, and the spiral conveying shaft 2 is sleeved in the life-saving cylinder 5 The spiral conveying shaft 2 and the inner side wall of the lifesaving tube 5 are provided with a gap, and the cutting head 1 having the variable diameter function is fixed to the front end of the spiral conveying shaft 2 through the receiving plate, and the spiral conveying shaft rotating driving device is disposed on the sliding base 8, the spiral conveying shaft 2 The rear end is connected with the screw conveying shaft rotation driving device, and the sliding base 8 and the chassis 20 are provided with a sliding pair along the longitudinal direction of the chassis. The propulsion system includes a propulsion cylinder 6 and a propulsion cylinder bracket 36 is provided at the rear end of the chassis 20 to advance The two ends of the cylinder 6 are respectively hinged on the propulsion cylinder bracket 36 and the sliding base 8. The hydraulic pump station includes a fuel tank 14, a pump station motor 15, a hydraulic pump 16 and a valve block 17, and the pump station motor drives the hydraulic pressure. The pressure oil of the hydraulic pump is connected to the propulsion cylinder 6 through the pipeline and the valve block, and the control cabinet 19 is provided with a controller, and the controller is connected with the screw conveying shaft rotation driving device, the pump station motor and the control end of the valve group, thereby realizing each In the control of the action, the power distribution cabinet 18 supplies power to the cutting head having the reducing function, the screw conveying shaft driving device, the pump station motor and the valve block, and the cutting head 1 having the reducing function includes the cutter head 271 and the cutter a cutter 272 on the disc, a side scraper telescopic mechanism, and a hydraulic control device, the side scraper 27 is coupled to the side scraper telescopic mechanism, and the scraper telescopic mechanism is mounted in the tapping groove of the cutter head, and the scraper telescopic mechanism is controlled by the hydraulic control device. The drive cylinder 273 is driven.

The screw conveying shaft rotation driving device comprises a driving motor 3 and a hollow shaft speed reducer 4, the driving motor 3 is arranged on the sliding base 8, the output shaft of the driving motor 3 is connected with the hollow shaft speed reducer 4, and the output shaft of the hollow shaft speed reducer 4 is passed The coupling 24 is connected to the rear end of the screw conveying shaft 2.

The spiral conveying shaft comprises a hollow shaft and a conveying screw, the conveying spiral is composed of a steel plate, and the conveying screw is welded to the outside of the hollow shaft, and a screw conveying shaft auxiliary device is further arranged in the tunnel collapse lifesaving machine, which comprises an electric winch 11, a wire rope 28 and a mandrel. 30 and the bearing housing 31, the bearing housing 31 has a cylindrical shape, the bearing housing 31 is welded to the front end of the hollow shaft, and the cutting head of the cutting head 1 having the variable diameter function is welded to the front end of the bearing housing 31, and the bearing housing 31 is provided with the core through the bearing The shaft 30, the rear part of the mandrel 30 is provided with an angular contact bearing 12, the inner ring of the angular contact bearing 12 and the mandrel are in a transitional fit, and the angular contact bearing outer ring and the bearing seat pass In the front part of the bearing seat 31, a retaining ring 311 is provided, and the retaining ring is screwed to the inner wall of the bearing housing. At the same time, a bearing end cover is arranged between the retaining ring and the thrust bearing, and the front end of the mandrel 30 and the retaining ring 311 A thrust bearing 13 is disposed between the front end of the mandrel and a nut. The thrust bearing 13 is disposed between the nut and the retaining ring 311. The electric winch 11 is fixed on the sliding base 8 and the end of the wire rope 28 is wound around the electric winch 11 The other end of the wire rope reel is connected to the rear end of the mandrel 30.

The front end of the hollow shaft reducer 4 is fixedly connected to the squirrel-cage thrust frame 25-end, and the other end of the squirrel-cage thrust frame 25 is connected to the rear end of the life-saving cylinder 5 through the rescue tube end transition joint 26, and the coupling 24 is located Inside the squirrel-cage thrust frame 5, a squirrel-cage thrust frame is used to facilitate the installation of the coupling.

An auxiliary cylinder bracket 37 is fixed on the front portion of the chassis 20, and an auxiliary cylinder 7 is fixed on the auxiliary cylinder bracket. The piston rod of the auxiliary cylinder 7 corresponds to the end of the life jacket end transition joint 26, and the end of the life tube end transition joint 26 is round. The vertical distance between the piston rod of the auxiliary cylinder and the center line of the life-saving cylinder is smaller than the distance between the edge of the transition joint end of the rescue cylinder and the center line of the life-saving cylinder. When the piston rod of the auxiliary cylinder extends, the transition joint of the end of the life-saving cylinder can be just right. 26 The force is applied to assist the propulsion. At the same time, the life-saving cylinder can be prevented from retreating when the screw conveying shaft is pulled out. The auxiliary cylinder 7 also has the function of preventing the life-saving cylinder from retreating.

A guide rail 10 along the longitudinal direction thereof is provided on the chassis 20, and a sliding shoe 9 is provided on the bottom portion 8 of the sliding base to cooperate with the guide rail 10 to constitute a sliding pair.

The spiral conveying shaft 2 is connected by 7 spiral conveying shaft segments, and two adjacent spiral conveying shaft segments are connected by a screw conveying shaft extension joint 32, and the lifesaving cylinder 5 is connected by 7 lifesaving cylinder segments. The length of the spiral conveying shaft section is 4nT6m, and the length of the lifesaving cylinder section is 4nT6m.

The tunnel collapse life-saving machine further includes a life-saving bed, wherein the life-saving bed comprises a bed 21, a bed shoe 22, a head cover 23 and a safety belt 33, and a head cover 23 is provided at the end of the bed 21 through a hinge 29, the bed The body shoe 22 is disposed at the lower part of the bed 21, and the outer cross section of the bed shoe is semicircular, and the outer diameter of the bed shoe 22 It is smaller than the inner diameter of the life jacket 5.

The cutting head 1 is attached to the front end of the screw conveying shaft 2 by a high-strength bolt 35. Using the rotation and axial advancement of the cutting head 1, the slag after the landslide is subjected to rock cutting. The cut muck is pushed rearward by the rotation of the spiral conveying shaft 2, and is discharged from the rear end of the lifesaving drum 5. The rotation of the screw feed shaft 2 and the cutting head 1 is driven by the drive motor 3, the reducer 4, and the coupling 24. The drive motor 3 and the reducer 4 are mounted on the slide base 8, which are axially movable along the guide rail 10 fixed to the chassis 20 by the slide shoes 9 under the slide base 8. The propulsion cylinder 6 is fixed on the propulsion cylinder support frame 36. Under the action of the propulsion cylinder 6, the drive motor 3 and the reduction gear 4 advance the rotating screw conveying shaft 2 and the cutting head 1 through the coupling 24, and pass the rat. The cage type thrust frame 25 and the life-saving cylinder end transition joint 26 advance the life-saving cylinder 5 axially forward, and the shaft of the screw conveying shaft 2, the cutting head 1 and the life-saving cylinder 5 are adopted due to mechanical forced synchronization measures. The speed of advancement is the same.

In order to reduce the penetration resistance of the life-saving cylinder 5 to the landslide 34, a cutting head 1 having a variable-diameter function is adopted (the national invention patent has been applied by the applicant, and the patent application name is "soft rock shield machine with a small range change" The cutting device with the diameter function" application number is 201010261104. X, the application date is August 24, 2010, and the national intellectual property authorization notice has been received. The cutting head with the variable diameter function comprises a cutter head, a cutter mounted on the cutter head, a side scraper telescopic mechanism, a hydraulic control device, the side scraper is coupled with the side scraper telescopic mechanism, and the side scraper telescopic mechanism is mounted on the cutter disc In the slag tank, the side scraper telescopic mechanism is driven by a drive cylinder in the hydraulic control device. The side scraper 27 of the cutting head 1 is stretched in the radial direction by the driving cylinder to change the excavation diameter of the cutting head 1. At the beginning of the excavation, the side scraper 27 projects outward so that the diameter of the excavation is slightly larger than the outer diameter of the life-saving cylinder 5, so that the penetration resistance of the life-saving cylinder 5 is greatly reduced.

The auxiliary cylinder 7 has an auxiliary propulsion and life-saving cylinder anti-backup locking function, which is fixed on the auxiliary cylinder bracket 37, and the auxiliary cylinder bracket 37 is fixed to the front of the chassis 20. If the friction between the life jacket 5 and the landslide 34 is excessive, the auxiliary cylinder 7 can be used while the propulsion cylinder 6 is being used.

In actual lifesaving, the life of the life-saving machine may be as long as several tens of meters. In order to reduce the deflection of the screw conveyor shaft 2, a screw conveyor shaft auxiliary device can be used. As shown in Fig. 4 and Fig. 8, it is through steel. The tension of the wire rope 28 is achieved. At different lengths of the screw conveyor shaft 2, it is appropriate to use a large tension, which can be obtained from the data provided by the calculation and the factory test. The actual tension of the wire rope 28 can be measured by a commercially available wire rope tension tester.

One end of the wire rope 28 is fixed to the reel of the electric winch 11, and the other end passes through the hollow shaft reducer 4, the coupling 24 enters the hollow screw conveying shaft 2, and is connected to the mandrel 30 at the front end of the screw conveying shaft 2. The inner ring of the angular contact bearing 12 is matched with the mandrel 30, and a transition fit can be adopted. The outer ring is matched with the bearing seat 31, and an interference fit can be used. The bearing housing 31 and the screw conveying shaft 2 are integrally connected by welding. When the screw conveying shaft 2 rotates, the bearing housing 31 and the bearing outer ring rotate around the bearing inner ring through the rolling elements.

When the electric winch 11 tensions the wire rope 28, the screw conveying shaft 2 is subjected to a clockwise moment, which counteracts the counterclockwise moment of the screw conveying shaft 2 due to its own weight, thereby reducing the deflection of the screw conveying shaft 2. Under the action of the angular contact bearing 12 and the thrust bearing 13, when the screw conveying shaft auxiliary device operates, the screw conveying shaft 2 rotates around the axis where the wire rope 28 and the mandrel 30 are located, and the wire rope 28 and the mandrel 30 themselves do not rotate (Fig. 2. Figure 4).

Since the life of the life-saving machine can be as long as several tens of meters, the screw conveyor shaft 2 and the life-saving cylinder 5 must be manufactured in sections for the convenience of transportation and installation. The length of the spiral conveying shaft 2 and the life-saving cylinder 5 is preferably 4nT6m. The extension joint 32 of the screw conveyor shaft 2 can be of a conventional geological drill or oil drill pipe joint type. The extension joint of the life-saving cylinder 5 is connected by a taper surface, and the taper is 1:10~1: 15, which has the advantages of good neutrality, easy operation and time saving. At the same time, the lengthening manner can ensure the smooth appearance of the life-saving cylinder 5, and can effectively reduce the penetration resistance of the cylinder.

The synchronous propulsion distance of the life-saving cylinder 5, the cutting head 1 and the auger shaft 2 is limited by the maximum stroke of the propulsion cylinder 6, generally 4 nT6 m, which should be the same as the segment length of the auger shaft 2 and the life-saving cylinder 5. In order to allow the life-saving cylinder 5, the cutting head 1 and the screw conveying shaft 2 to continuously advance, it is necessary to take measures of step-changing and lengthening. When the piston rod of the propulsion cylinder 6 projects outwardly for a full stroke, the coupling 24 is opened to disengage the screw conveyor shaft 2 from the hollow shaft reducer 4; the clutch of the electric winch 11 is released, and the rope reel and the motor are made. The disengagement is in a free state, and then the propulsion cylinder 6 is retracted to the maximum stroke. Take off The wire rope 28 is connected to the wire rope reel of the electric winch 11 while the life jacket end transition joint 26 is removed, and the wire rope 28 is advanced from the hollow shaft reducer 4, the coupling 24 and the life jacket end transition joint 26 The drawing is carried out from the screw conveying shaft 2 and the lifesaving drum 5 which are to be extended, and passes through the coupling 24, the hollow shaft speed reducer 4, and is reconnected to the wire rope reel of the electric winch 1 1 . Thereafter, the length of the screw conveyor shaft 2 and the life jacket 5 can be made. After the extension, the escape tube end transition joint 26 is placed at the rear end of the life-saving cylinder 5, and the coupling 24 is closed, so that the cutting head 1 can continue to rotate. At the same time, the clutch of the electric winch 11 is closed, and the wire rope 28 is tightened by the electric winch 11 to reduce the deflection of the screw conveying shaft 2. With the outward extension of the propulsion cylinder 6, the life-saving cylinder 5, the screw conveying shaft 2 and the cutting head 1 can continue to advance synchronously, and a new working cycle after the step-by-step extension is started.

The squirrel-cage thrust frame 25 is fixed to the hollow shaft reducer 4 by screwing or welding, and its function is to transmit the thrust of the propulsion cylinder 6 to the life-saving cylinder 5 through the life-saving cylinder end transition joint 26. The squirrel cage is used to provide the necessary operating space for the disassembly and assembly of the coupling 24.

The function of the end of the life-saving cylinder transition joint 26 can not only support the thrust of the propulsion cylinder 6, but also protect the end cone surface of the life-saving cylinder 5 to prevent mechanical damage and ensure the centering quality of the cylinder length, as shown in the figure. 7 and Figure 8.

After a number of steps, one long and one advanced working cycle, the cutting head 1, the screw conveyor shaft 2, and the life jacket 5 will pass through the landslide 34. At this time, the side scraper 27 of the cutting head 1 should be retracted so that its swivel diameter is smaller than the inner diameter of the life-saving cylinder 5, so that the screw-conveying shaft 2 together with the cutting head 1 is pulled backward from the life-saving cylinder 5.

Compared with the process of propulsion, the process of extraction is relatively simple.

In order to prevent the rescue drum 5 from being withdrawn backward while withdrawing the screw conveying shaft 2, to ensure that the structural space of the safety passage is not damaged, firstly, the auxiliary cylinder 7 is extended, and the life-saving cylinder 5 is topped through the life-cycle end transition joint 26. Keep out of step. The coupling 24 is opened, the clutch of the electric winch 11 is released, and the propulsion cylinder 6 is retracted to the maximum stroke, and the clutch of the electric winch 1 1 is closed. Through the rotation of the electric winch, the wire rope 28 is driven to drag the screw conveying shaft 2 backward. When the extension joint 32 exposes the life-saving cylinder body, the extension joint 32 can be removed and the wire rope end connection of the electric winch 11 can be loosened. Lose The shaft 2 can be taken out.

By repeating the above steps, the screw conveying shaft 2 is pulled out and removed step by step, and finally a space is formed in the life-saving cylinder 5. The trapped person can climb out of the life-saving cylinder 5 or use an electric winch 1 1 to help the trapped person out.

In the process of cutting head 1 excavation, if the landslide body contains the grille arch reinforcement or steel for the initial support of the tunnel, which makes the tunneling difficult, the above method can be used to withdraw the screw conveyor shaft 2, by the construction personnel. The cutting tool is carried into the life-saving cylinder 5 for cutting work.

Example 2

Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 1 1

12. Figure 13 and Figure 14. The life-saving machine structure and the life-saving process of this embodiment are basically the same as those of the first embodiment, but have the following differences.

The drive motor in the rotary drive shaft rotary drive is changed to a hydraulic motor, and the electric winch is changed to a hydraulic winch.

In order to facilitate transportation, the chassis 20 is changed from a monolithic type to a split type, which is composed of two boxes, the split surface is located in the middle, and each of the two boxes is provided with a tray, which is connected by high-strength bolts, and the split chassis is convenient. Transportation during construction.

After a transparent space is formed in the life-saving cylinder 5, a commercially available pneumatic throwing gun is used to direct the cable to the front end of the life-saving cylinder 5, and after the trapped person catches the cable, the first-aid box squatting in the middle of the cable is pulled forward. There are basic trauma treatment drugs and a small amount of food and pure water in the first aid kit. On the one hand, the injured can get the ambulance as soon as possible, on the other hand, the trapped person can be supplemented with the necessary physical energy to speed up the rescue.

Before using the throwing gun, you can use the lifesaving tube 5 to call the trapped person or use the light to remind the trapped person to pay attention to safety.

For trapped people who are injured and lose their ability to actively crawl, use a life-saving bed (Figure 12).

The lifeboat consists of a bed 21, a bed shoe 22, a head cover 23 and a safety belt 33. The head cover 23 is rotatable about a hinge 29 fixed to the bed body, the bed body 21 and the head cover 23 are made of fiberglass material, and the bed shoe 22 is made of UHMW-PE material, which has super Strong anti-sliding Rubbing ability and extremely high abrasion resistance. The outer diameter of the bed shoe 22 is 590 mm, which substantially matches the inner diameter of the life jacket 5.

The life-saving bed is fixed in the middle of the cable, the front end of the cable is located in the trapped area, and the rear end is connected to the hydraulic winch 11. After the trapped person pulls the life-saving bed to the front end of the life-saving tube through the cable, the injured person is lifted onto the life-saving bed, and the head cover 23 is buckled to protect the face from the slag that may fall on the wall of the life-saving tube. Attach the safety belt 33 to prevent the casualty from slipping off the lifebed.

Starting the hydraulic winch 1 1. Pull the injured person smoothly to the rear end of the life preserver 5. After lifting the wounded, the trapped person pulls the life-saving bed to the front end again through the cable, and can rescue the second wounded.

It should be noted that for the trapped person who is not injured, the above method can also be used to rescue, which is faster than active crawling.

If there is more water in the front end of the life-saving cylinder, the submersible pump should be used to remove the water.

If the slag discharge of the screw conveying shaft 2 is difficult due to the long distance of the life-saving machine, the cutting head 1 and the screw conveying shaft 2 can be continuously rotated, and the life-saving cylinder 5, the screw conveying shaft 2 and the cutting head 1 are intermittently pushed. The length of the interval is flexible and the slag discharge condition is flexible.

In addition to the above technical solutions, the sliding pair between the sliding base and the chassis can also adopt other structural forms, such as a sliding sleeve and a sliding rod method; a bayonet connection can also be adopted between the lifesaving cylinder segments; The shaft and the life-saving cylinder are composed of at least two segments, and may also be 3 segments, 4 segments, 5 segments or 10 segments, and the length of each segment is generally 4 to 6 m, the specific number of which depends on the length of the collapsed body; In the chassis, two cases are generally used to form the chassis, so as to facilitate transportation. Of course, in the case of ensuring the overall rigidity of the chassis, the number of the housings of the split chassis can also be appropriately increased, for example, using 2 to 5 cabinets to form the chassis; and the cutting blade with the reducing function is replaced by a hob.

Claims

Claim

A tunnel landscaping lifesaving machine, comprising: a cutting head having a reducing function, a screw conveying shaft, a screw conveying shaft rotation driving device, a lifesaving cylinder, a propulsion system, a hydraulic pumping station, a chassis, a power distribution cabinet, and The control cabinet has a spiral conveying shaft sleeve disposed in the life-saving cylinder, and a gap is provided between the spiral conveying shaft and the inner side wall of the life-saving cylinder, and the cutting head having the variable diameter function is fixed to the front end of the spiral conveying shaft through the connecting plate, and the spiral conveying shaft rotating driving device is disposed at On the sliding base, the rear end of the screw conveying shaft is connected with the screw conveying shaft rotation driving device, and a sliding pair along the length direction of the chassis is arranged between the sliding base and the chassis, the propulsion system includes a propulsion cylinder, and a propulsion cylinder bracket is arranged at the rear end of the chassis. The two ends of the propulsion cylinder are respectively connected to the propulsion cylinder bracket and the sliding base. The hydraulic pump station includes a fuel tank, a pump station motor, a hydraulic pump and a valve block, the pump station motor drives a hydraulic pump, and the hydraulic pump pressure oil passes through the pipeline and the valve block. Connected to the propulsion cylinder, the controller is provided with a controller, the controller and the screw conveyor shaft rotary drive The pump station motor is connected to the control end of the valve block, and the power distribution cabinet supplies power to the cutting head with the variable diameter function, the screw conveying shaft rotary driving device, the pump station motor and the valve block, and the cutting head with the variable diameter function includes the knife The disc, the cutter mounted on the cutter head, the side scraper telescopic mechanism, the hydraulic control device, the side scraper and the side scraper telescopic mechanism are connected, the scraper telescopic mechanism is installed in the tapping groove of the cutter disc, and the scraper telescopic mechanism is hydraulic Drive cylinder drive in the control unit.

2. The tunnel landscaping lifesaving machine according to claim 1, wherein: the screw conveying shaft rotation driving device comprises a driving motor and a hollow shaft speed reducer, wherein the driving motor is disposed on the sliding base, and the driving motor output shaft and the hollow shaft are driven. The reducer is connected, and the output shaft of the hollow shaft reducer is connected to the rear end of the screw conveying shaft through the coupling.

3. The tunnel landscaping lifesaving machine according to claim 2, wherein: the spiral conveying shaft comprises a hollow shaft and a conveying screw, the conveying spiral is made of steel plate, and the conveying screw is welded to the outside of the hollow shaft, in the tunnel landslide life-saving machine. The utility model further comprises a screw conveying shaft auxiliary device, which comprises an electric winch, a steel wire rope, a mandrel and a bearing seat, wherein the bearing seat has a cylindrical shape, the bearing seat is welded to the front end of the hollow shaft, and the cutting head of the cutting head with the variable diameter function is welded to the bearing seat. In the front end, a bearing is arranged in the bearing housing, the core shaft is arranged in the inner hole of the bearing, and an angular contact bearing is arranged in the rear part of the mandrel, the inner ring of the angular contact bearing and the mandrel are a transition fit, the angular contact bearing outer ring and the bearing seat The interference fit is provided with a retaining ring at the front of the bearing housing, and a thrust bearing is arranged between the front end of the mandrel and the retaining ring, the electric winch is fixed on the sliding base, and one end of the wire rope is wound around the wire rope of the electric winch Claim

On the reel, the other end is connected to the rear end of the mandrel.

4. The tunnel landscaping life-saving machine according to claim 1, wherein: the front end of the hollow shaft reducer is fixedly connected to one end of the squirrel-cage thrust frame, and the other end of the squirrel-cage thrust frame is passed through the end of the life-saving cylinder transition joint and the The rear ends of the life jackets are connected, and the couplings are located inside the squirrel cage thrust frame.

5. The tunnel landscaping lifesaving machine according to claim 1, wherein: an auxiliary cylinder bracket is fixed at a front portion of the chassis, and an auxiliary cylinder is fixed on the auxiliary cylinder bracket, and a piston rod of the auxiliary cylinder and a life tube end transition Corresponding to the joint, the vertical distance between the piston rod of the auxiliary cylinder and the center line of the life-saving cylinder is smaller than the distance between the edge of the transition joint end of the life-saving cylinder and the center line of the life-saving cylinder.

6. The tunnel landslide life-saving machine according to claim 3 or 4 or 5, wherein: the chassis is provided with a guide rail along the length thereof, and a sliding shoe is arranged at the bottom of the sliding base to cooperate with the guide rail to form a sliding pair. .

7. The tunnel landscaping lifesaving machine according to claim 6, wherein: the screw conveying shaft is formed by connecting at least two screw conveying shaft segments, and the lifesaving cylinder is connected by at least two lifesaving cylinder segments. The length of the spiral conveying shaft section is 4m~6m, and the length of the lifesaving bucket section is 4m~6m.

8. The tunnel landslide life-saving machine according to claim 7, wherein: two adjacent life-saving cylinder sections are connected by a cone, and an outer tapered surface is provided on an outer side of one end of the life-saving cylinder section, and the life-saving cylinder section is provided. The inner side of the other end is provided with an inner tapered surface, and the outer tapered surface cooperates with the inner tapered surface, and the outer tapered surface and the inner tapered surface have a taper of 1:10 to 1:15.

9. The tunnel landscaping life raft according to claim 8, wherein: the chassis is formed by connecting two casings by bolts.

10. The tunnel landscaping life raft according to claim 3 or 4 or 5, wherein: the tunnel landscaping life raft is further provided with a life-saving bed, the life-saving bed comprising a bed, a bed sliding shoe, a hood and a safety The belt has a hood at one end of the bed, and the bed shoe is disposed at the lower part of the bed. The outer cross section of the bed shoe is semicircular, and the outer diameter of the bed shoe is smaller than the inner diameter of the life tube.