阅读说明：本技术 基于水泵吊装的变轴距履带车及其排水方法 (Variable-wheelbase crawler based on water pump hoisting and drainage method thereof ) 是由 高贵军 寇子明 杨文强 段祯 石军杰 杜靖永 于 2021-09-06 设计创作，主要内容包括：本发明属于矿井透水应急排水技术领域,公开了一种用于水泵吊装的变轴距履带车及其排水方法。所述变轴距履带车包括车架(3),所述车架(3)两侧各设置有两个可横向伸长的辅助支腿(6),所述辅助支腿(6)底部固定设置有履带行走机构(1),所述车架(3)四角设置有可竖向伸缩的支撑腿(2),所述车架(3)中心设置有水泵起吊机构(4),所述水泵起吊机构(4)用于起吊水泵。本发明通过设置横向调节油缸,可以调整履带之间的距离,适应不同的轨道要求,使得履带车可以在煤矿井下稳定行走,适用于倾斜巷道,而且,通过在履带车上吊装水泵,可以降低救援设备的移动难度,提高追排水效率。(The invention belongs to the technical field of mine water-permeable emergency drainage, and discloses a variable-wheelbase crawler for water pump hoisting and a drainage method thereof. The track vehicle with the variable wheel base comprises a vehicle frame (3), two auxiliary supporting legs (6) capable of extending transversely are arranged on two sides of the vehicle frame (3), a track walking mechanism (1) is fixedly arranged at the bottom of each auxiliary supporting leg (6), supporting legs (2) capable of extending vertically are arranged at four corners of the vehicle frame (3), a water pump lifting mechanism (4) is arranged at the center of the vehicle frame (3), and the water pump lifting mechanism (4) is used for lifting a water pump. The crawler can stably walk under a coal mine and is suitable for inclined roadways by arranging the transverse adjusting oil cylinder to adjust the distance between the crawler belts and adapt to different track requirements, and the moving difficulty of rescue equipment can be reduced and the tracking and draining efficiency can be improved by hoisting the water pump on the crawler belt.)

1. The utility model provides a variable wheel base tracked vehicle for water pump hoist and mount, its characterized in that, includes frame (3), frame (3) both sides respectively are provided with two auxiliary leg (6) that can transversely extend, the fixed crawler travel mechanism (1) that is provided with in auxiliary leg (6) bottom, frame (3) four corners is provided with supporting leg (2) that can vertically stretch out and draw back, frame (3) center is provided with water pump hoisting mechanism (4), water pump hoisting mechanism (4) are used for lifting by crane the water pump.

2. The track vehicle with the variable wheelbase for water pump hoisting according to claim 1, wherein the auxiliary supporting legs (6) comprise a transverse telescopic hydraulic cylinder (6-3), a connecting plate (6-2) and L-shaped movable supporting legs (6-1), the transverse telescopic hydraulic cylinder (6-3) is fixedly arranged on the vehicle frame (3), a piston rod of the transverse telescopic hydraulic cylinder is fixedly connected with the horizontal parts of the movable supporting legs (6-1) through the connecting plate (6-2), and the vertical parts of the movable supporting legs (6-1) are fixedly connected with the track walking mechanism (1).

3. The variable-wheelbase crawler for water pump hoisting as claimed in claim 1, the supporting leg (2) comprises a leg outer plate (2-2), an inner supporting cylinder (2-5) and a longitudinal telescopic hydraulic cylinder (2-6), the outer supporting leg plate (2-2) is fixedly arranged on the frame (3), the inner supporting cylinder (2-5) and the longitudinal telescopic hydraulic cylinder (2-6) are sequentially arranged in the outer supporting leg plate (2-2), a sliding groove (2-4) along the vertical direction is formed above the inner support cylinder bottom (2-5), and an oil cylinder pin (2-3) sequentially penetrates through the sliding grooves of the sliding groove (2-4) on the outer supporting leg plate (2-2) and the inner support cylinder bottom (2-5) and then is arranged on the longitudinal telescopic hydraulic cylinder (2-6); the pin shaft (2-1) passes through a pin hole at the bottom of the inner support cylinder bottom (2-5) and is connected with a piston rod of the longitudinal telescopic hydraulic cylinder (2-6).

4. The track vehicle with the variable wheelbase for hoisting the water pump according to claim 1, wherein the water pump hoisting mechanism (4) comprises two groups of parallel pulley hoisting devices, each group of pulley hoisting devices comprises a steel wire rope (4-6), a fixed pulley (4-9), a movable pulley (4-5), a fixed structure and a hoisting hydraulic cylinder (4-3), the fixed pulley (4-9) is arranged at one end of the vehicle frame (3), the hoisting hydraulic cylinder (4-3) is fixedly arranged at the other end of the vehicle frame (3), the movable pulley (4-5) is arranged on a piston rod of the hoisting hydraulic cylinder (4-3), one end of the steel wire rope (4-6) is fixedly arranged at one end of the vehicle frame (3), and the other end of the steel wire rope passes through the movable pulley (4-5) and the fixed pulley (4-9) in sequence and then is connected with the fixed structure arranged below the fixed pulley (4-9), the fixing structure is used for fixing the water pump.

5. The track-laying vehicle with variable wheel base for water pump hoisting according to claim 4, characterized in that the fixing structure is a round-link chain or a clamping mechanism.

6. The track vehicle with the variable wheel base for hoisting the water pump as claimed in claim 1, further comprising a lifting driving platform (9) respectively arranged on one side of the frame (3), wherein the lifting driving platform (9) is provided with an explosion-proof motor (9-1) and an oil pump (9-2).

7. The track-laying vehicle with variable wheel base for water pump hoisting according to claim 6 is characterized in that the lifting driving platform (9) comprises a sleeve rod structure (9-5), a turbine screw rod lifter (9-4) and a lifting platform (9-3), and the lifting platform is arranged on the vehicle frame (3) through the sleeve rod structure (9-5) and the turbine screw rod lifter (9-4).

8. An emergency drainage method is realized by the variable-wheelbase crawler for water pump hoisting according to any one of claims 1 to 7, and comprises the following steps of:

s1, adjusting the width of the crawler belt, and changing the wheelbase to adapt to the roadway site;

s2, hoisting the submersible pump;

s3, controlling the tracked vehicle to travel below the surface of the accumulated water, completely submerging the submersible pump into the water, connecting the pipeline and controlling the tracked vehicle to extend the supporting legs out, and ensuring the drainage vehicle to drain water stably;

and S4, when the water level is lowered to the height of the water pump, connecting a new pipeline again, then retracting the supporting legs, and repeating the step S3 until the water drainage is finished.

9. The emergency drainage method according to claim 8, wherein the step S1 specifically comprises the steps of:

s101, extending out the supporting legs to enable the tracked vehicle to keep stable;

s102, controlling the auxiliary supporting legs (6) to move transversely, and further controlling the distance between the two crawler traveling mechanisms (1) to adapt to the width of a roadway or the width of a traveling track in the roadway;

s103, retracting the supporting legs.

10. An emergency drainage method according to claim 1, further comprising the step of installing a winch (10) on the ground, the wire rope of the winch (10) being tied up to a circular hook at the center of the rear portion of the frame (3).

Technical Field

The invention belongs to the technical field of mine water-permeable emergency drainage, and particularly relates to a track vehicle with a variable wheelbase for hoisting a water pump and a drainage method thereof.

Background

In recent years, along with the continuous increase of the coal mining depth, the coal mining machine is more and more threatened by underground water, and water permeation accidents happen occasionally. The water penetration accident is the second major production safety accident just after the gas explosion, and each accident can cause huge loss of lives and properties. The rapid rescue of the coal mine water permeation accident is an important measure for saving life and property loss.

At present, the coal mine permeable rescue mainly has the following problems, and firstly, the rescue environment is severe: when a water permeation accident occurs, the ground in the roadway becomes wet and slippery, and the inclined roadway is narrow, so that people walk in the roadway, the materials are very difficult to transport in the roadway, and the roadway is often provided with a track, so that a vehicle for hoisting the water pump is difficult to walk; secondly, rescue equipment removes the difficulty, follows closely the drainage inefficiency: the mine drainage rescue generally uses a large-flow and high-lift submersible pump, has large volume and heavy weight, is very difficult to move depending on manpower, not only has slow moving speed, but also wastes time and labor; thirdly, the pipeline connection is complicated: the connection of the drainage pipeline joint of the submersible pump is usually bolt connection, but the bolt connection is complex, the connection process is slow, and the phenomena of poor sealing, water leakage and the like are easy to occur during the connection; fourthly, the organization management efficiency is low during drainage rescue: the submersible pump drainage rescue does not have a unified regulation flow to guide the process, the work of each rescue department is crossed without a sequence, so that the work is messy, the rescue time is increased, the rescue time is delayed, and the resource waste and the life and property loss are caused.

In view of the above problems, it is desirable to provide a new coal mine drainage device and method.

Disclosure of Invention

The invention overcomes the defects of the prior art, and solves the technical problems that: the variable-wheelbase crawler for hoisting the water pump and the drainage method thereof are provided, so that the workload of workers during rescue is reduced, the emergency drainage efficiency during emergency rescue is improved, and the loss caused by water permeation accidents is reduced.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a variable wheel base tracked vehicle for water pump hoist and mount, includes the frame, the frame both sides respectively are provided with two auxiliary leg that can transversely extend, the fixed crawler that is provided with in auxiliary leg bottom, the frame four corners is provided with the supporting leg that can vertically stretch out and draw back, the frame center is provided with water pump hoisting mechanism, water pump hoisting mechanism is used for lifting by crane the water pump.

The auxiliary supporting legs comprise transverse telescopic hydraulic cylinders, connecting plates and L-shaped movable supporting legs, the transverse telescopic hydraulic cylinders are fixedly arranged on the frame, piston rods of the transverse telescopic hydraulic cylinders are fixedly connected with the horizontal parts of the movable supporting legs through the connecting plates, and the vertical parts of the movable supporting legs are fixedly connected with the crawler travelling mechanism.

The supporting leg comprises a leg outer plate, an inner supporting cylinder and a longitudinal telescopic hydraulic cylinder, the leg outer plate is fixedly arranged on the frame, the inner supporting cylinder and the longitudinal telescopic hydraulic cylinder are sequentially arranged in the leg outer plate, a chute in the vertical direction is arranged above the bottom of the inner supporting cylinder, and an oil cylinder pin is arranged on the longitudinal telescopic hydraulic cylinder after sequentially penetrating through the chutes of the chutes on the leg outer plate and the inner supporting cylinder bottom; and the pin shaft penetrates through a pin hole at the bottom of the inner support cylinder bottom to be connected with a piston rod of the longitudinal telescopic hydraulic cylinder.

The water pump hoisting mechanism comprises two groups of pulley hoisting devices which are arranged side by side, each group of pulley hoisting devices comprises a steel wire rope, a fixed pulley, a movable pulley, a fixed structure and a hydraulic cylinder for hoisting, the fixed pulley is arranged at one end of the frame, the hydraulic cylinder for hoisting is fixedly arranged at the other end of the frame, the movable pulley is arranged on a piston rod of the hydraulic cylinder for hoisting, one end of the steel wire rope is fixedly arranged at one end of the frame, the other end of the steel wire rope sequentially passes through the movable pulley and the fixed pulley and then is connected with the fixed structure arranged below the fixed pulley, and the fixed structure is used for fixing the water pump.

The fixed structure is a circular ring chain or a clamping mechanism.

The variable-wheelbase tracked vehicle for hoisting the water pump further comprises lifting driving platforms which are arranged on one sides of the frames respectively, and an explosion-proof motor and an oil pump are arranged on the lifting driving platforms.

The lifting driving platform comprises a sleeve rod structure, a worm gear lead screw lifter and a lifting platform, and the lifting platform is arranged on the frame through the sleeve rod structure and the worm gear lead screw lifter.

In addition, the invention also provides an emergency drainage method, which is realized based on the variable-wheelbase tracked vehicle for water pump hoisting and comprises the following steps of:

s1, adjusting the width of the crawler belt, and changing the wheelbase to adapt to the roadway site;

s2, hoisting the submersible pump;

s3, controlling the tracked vehicle to travel below the surface of the accumulated water, completely submerging the submersible pump into the water, connecting the pipeline and controlling the tracked vehicle to extend the supporting legs out, and ensuring the drainage vehicle to drain water stably;

and S4, when the water level is lowered to the height of the water pump, connecting a new pipeline again, then retracting the supporting legs, and repeating the step S3 until the water drainage is finished.

The step S1 specifically includes the following steps:

s101, extending out the supporting legs to enable the tracked vehicle to keep stable;

s102, controlling the auxiliary supporting legs to move transversely, and further controlling the distance between the two crawler traveling mechanisms to enable the crawler traveling mechanisms to adapt to the width of a roadway or the width of a traveling track in the roadway;

s103, retracting the supporting legs.

The emergency drainage method further comprises the step of installing a winch on the ground, wherein a steel wire rope of the winch is bound on a circular hook at the center of the rear part of the frame.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a variable-wheelbase tracked vehicle for water pump hoisting and a drainage method thereof, wherein the variable-wheelbase tracked vehicle is provided with a track adjusting oil cylinder, so that the distance between tracks can be adjusted when the track is met, the track adjusting oil cylinder is suitable for roadway environments for installing tracks with different widths, the tracked vehicle can stably walk under a coal mine, and the track adjusting oil cylinder is suitable for inclined roadways.

Drawings

Fig. 1 is a schematic structural view of a water pump hoisted variable-wheelbase crawler in a front view according to a first embodiment of the present invention;

fig. 2 is a schematic top view of the structure of fig. 1.

Fig. 3 is a left side view of the structure of fig. 1.

Fig. 4 is a schematic view of the variable-wheel-base crawler running on the outer side of the track in the embodiment.

Fig. 5 is a schematic structural view of the auxiliary leg in this embodiment.

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a schematic structural view of a support leg according to an embodiment;

FIG. 8 is a schematic structural view of a portion of the support leg of FIG. 7;

FIG. 9 is a schematic view of the structure of the longitudinal telescopic hydraulic cylinder inside the support leg according to the first embodiment;

FIG. 10 is a schematic structural diagram of a water pump hoisting mechanism according to an embodiment;

FIG. 11 is a schematic view of a water pump according to an embodiment;

fig. 12 is a schematic flow chart of an emergency drainage method according to a second embodiment of the present invention;

FIG. 13 is a schematic view of a water pump for hoisting according to a second embodiment of the present invention;

FIG. 14 is a schematic view showing the first water discharge in the second embodiment of the present invention;

FIG. 15 is a schematic view of the continuous drainage in the second embodiment of the present invention;

FIG. 16 is a schematic view of a multi-pump series connection according to a second embodiment of the present invention;

wherein, 1 crawler walking mechanism, 2 support systems, 2-1 pin shafts, 2-2 outer plates of supporting legs, 2-3 oil cylinder pins, 2-4 chutes, 2-5 inner support cylinders, 2-6 longitudinal telescopic hydraulic cylinders, 3 vehicle frames: 3-1 front frame, 3-2 middle frame, 3-3 rear frame, 4, water pump hoisting system: 4-1 oil cylinder fixing plate, 4-2 round link chain, 4-3 hydraulic cylinder for lifting, 4-4 pulley block, 4-5 movable pulley, 4-6 steel wire rope, 4-7U-shaped chuck, 4-8 pin shaft, 4-9 fixed pulley, 4-10 buckle, 5 drainage system, 5-1 submersible pump, 5-2 connecting pipe, 5-3 check valve, 5-4 drain valve, 5-5 flowmeter, 5-6 polyurethane fabric reinforced hose, 5-7 fire-fighting quick connector, 5-8 block valve, 6 auxiliary supporting leg, 6-1 movable supporting leg, 6-2 connecting plate, 6-3 horizontal telescopic hydraulic cylinder, 7, multi-way valve group control box: 7-1 valves control handle, 7-2 multichannel valves, 7-3 multichannel valve frames, 8, hydraulic tank: 8-1 oil tank oil mass marker, 8-2 control valve, 8-3 manometer, 8-4 hydraulic filter, 8-5 deposit oil tank, 9, lift drive platform: 9-1 explosion-proof motor, 9-2 oil pump, 9-3 lift platform, 9-4 turbine screw rod elevator, 10 winch, 11 reserve immersible pump, 12 track running gear: 12-1 rail wheel, 13 rails, 14 water surface and 15 inclined roadway.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1 to 3, an embodiment of the invention provides a variable-wheelbase tracked vehicle for water pump hoisting, which comprises a vehicle frame 3, two auxiliary support legs 6 capable of transversely extending are respectively arranged on two sides of the vehicle frame 3, a tracked walking mechanism 1 is fixedly arranged at the bottom of each auxiliary support leg 6, support legs 2 capable of vertically extending and retracting are arranged at four corners of the vehicle frame 3, a water pump hoisting mechanism 4 is arranged at the center of the vehicle frame 3, and the water pump hoisting mechanism 4 is used for hoisting a water pump.

In this embodiment, crawler 1 sets up on frame 3 through supplementary landing leg 6, then when needing to adjust crawler wheel base, only needs to support landing leg 2 through the extension, and it is built on stilts with crawler 1, then through adjusting supplementary landing leg lateral shifting, can adjust the distance between two crawler 1, the walking track in the tunnel and the tunnel of adaptation different width. For example, when a 600mm track is encountered, the distance between the tracks of the crawler is adjusted to 650mm, with the tracks of the crawler on both sides of the rail, as shown in fig. 4. On encountering a 900mm track, the crawler would extend the auxiliary legs 6, changing the distance between the tracks from 650mm to 950mm, again with the tracks of the crawler on both sides of the rail. In addition, the tracked vehicle can adapt to pavements with different road conditions by changing the width between the tracks, so that the stability and the adaptability of the tracked vehicle during walking are greatly improved.

Further, as shown in fig. 5 to 6, the auxiliary supporting leg 6 comprises a transverse telescopic hydraulic cylinder 6-3, a connecting plate 6-2 and an L-shaped movable supporting leg 6-1, the transverse telescopic hydraulic cylinder 6-3 is fixedly arranged on the frame 3, a piston rod of the transverse telescopic hydraulic cylinder is fixedly connected with a horizontal part of the movable supporting leg 6-1 through the connecting plate 6-2, and a vertical part of the movable supporting leg 6-1 is fixedly connected with the crawler traveling mechanism 1. The track pitch changing operation of the crawler can be realized by controlling the transverse telescopic hydraulic cylinder 6-3 to extend out of the piston rod.

Further, as shown in fig. 7 to 9, in this embodiment, the support leg 2 includes a leg outer plate 2-2, an inner support tube 2-5 and a longitudinal telescopic hydraulic cylinder 2-6, the leg outer plate 2-2 is fixedly disposed on the frame 3, the inner support tube 2-5 and the longitudinal telescopic hydraulic cylinder 2-6 are sequentially disposed in the leg outer plate 2-2, a chute 2-4 along a vertical direction is disposed above the inner support tube bottom 2-5, and the cylinder pin 2-3 sequentially passes through chutes of the chutes 2-4 on the leg outer plate 2-2 and the inner support tube bottom 2-5 and then is disposed on the longitudinal telescopic hydraulic cylinder 2-6; the pin shaft 2-1 penetrates through a pin hole at the bottom of the inner support cylinder bottom 2-5 and is connected with a piston rod of the longitudinal telescopic hydraulic cylinder 2-6.

Further, as shown in fig. 10, in this embodiment, the water pump hoisting mechanism 4 includes two sets of parallel pulley hoisting devices, each set of pulley hoisting device includes a steel wire rope 4-6, a fixed pulley 4-9, a movable pulley 4-5, a fixed structure and a hydraulic cylinder 4-3 for hoisting, the fixed pulley 4-9 is disposed at one end of the frame 3, the hydraulic cylinder 4-3 for hoisting is fixedly disposed at the other end of the frame 3, the movable pulley 4-5 is disposed on a piston rod of the hydraulic cylinder 4-3 for hoisting, one end of the steel wire rope 4-6 is fixedly disposed at one end of the frame 3, the other end of the steel wire rope passes through the movable pulley 4-5 and the fixed pulley 4-9 in sequence and then is connected with the fixed structure disposed below the fixed pulley 4-9, and the fixed structure is used for fixing the water pump. In addition, in the embodiment, the pulley hoisting device further comprises an oil cylinder fixing plate 4-1, a pulley seat 4-4, a U-shaped chuck 4-7, a pin shaft 4-8 and a ring buckle 4-10, the ring buckle 4-10 is arranged on the inner side of the frame 3, one end of a steel wire rope penetrates through the ring buckle 4-10 and is fixed on the frame 3 through the U-shaped chuck 4-7, and a fixed pulley and a movable pulley are arranged on the pulley seat 4-4 and are fixed through the pin shaft 4-8 and a cotter pin.

Specifically, in the present embodiment, the fixing structure is a circular ring chain 4-2, as shown in fig. 11, and the fixing structure may also be other types of clamping mechanisms, such as a C-shaped clamp, or a circular hoop. When in lifting, the two circular ring chains 4-2 are respectively sleeved at two ends of the submersible pump 5-1, then the hydraulic system drives the lifting hydraulic cylinders 4-3 at two sides, the piston rods of the lifting hydraulic cylinders 4-3 contract, and the circular ring chains 4-2 at two ends are lifted simultaneously.

Further, as shown in fig. 2, the track vehicle with variable wheel base for hoisting the water pump of the present embodiment further includes a lifting driving platform 9 respectively disposed on one side of the frame 3, as shown in fig. 12, in the present embodiment, the lifting driving platform 9 includes a loop bar structure 9-5, a worm gear screw lifter 9-4, and a lifting platform 9-3, and the lifting platform is disposed on the frame 3 through the loop bar structure 9-5 and the worm gear screw lifter 9-4. An explosion-proof motor 9-1 and an oil pump 9-2 are arranged on the lifting driving platform 9. The explosion-proof motor 9-1 is a standard motor, and the motor is connected with a cable and is powered by the ground. The oil pump 9-2 is a standard oil pump, and the motor-driven oil pump 9-2 provides power for the walking part and the supporting legs 2 on the crawler. The loop bar structure 9-5 can be a structure that a large square steel column is sleeved with a small square steel column, a large square steel column and the small square steel column are respectively fixed on the lifting driving platform 9-3 and the frame 3, when a handle of the turbine screw rod lifter 9-4 is rotated, a screw rod rises to drive the large square steel column to rise, so that the explosion-proof motor 9-1 and the oil pump 9-2 are lifted, and therefore a large amount of water can be prevented from entering the motor and the oil pump when the submersible pump is submerged in water, and the work of the tracked vehicle is influenced.

Further, as shown in fig. 2, in the present embodiment, a hydraulic oil tank 8 and a multi-way valve group control box 7 are further disposed on the other side of the frame 3 of the variable-wheelbase crawler. The multi-way valve bank control box 7 comprises a valve bank control handle 7-1, a multi-way valve bank 7-2 and a multi-way valve frame 7-3. The control valve group control handle 7-1 can change the hydraulic oil circuit of the multi-way valve group 7-2, so that the working state is changed. The hydraulic oil tank 8 comprises an oil tank oil quantity indicator 8-1, a control valve 8-2, a pressure gauge 8-3, a hydraulic filter 8-4 and an oil storage tank 8-5. As shown in fig. one, the fuel level indicator 8-1 can display the amount of fuel in the fuel tank. The control valve 8-2 is connected with a multi-way valve group control box 7 through a hydraulic pipeline, and the pressure gauge 8-3 can measure the pressure of oil in the oil tank. The hydraulic filter 8-4 is a standard component and can filter hydraulic oil, remove impurities of the hydraulic oil and control the cleanliness of the oil. The oil storage tank 8-5 is used for storing hydraulic oil, and an oil pressure pipeline is arranged on the oil storage tank and is used for being connected with the lifting driving platform 9.

Further, as shown in fig. 3, in this embodiment, a spare submersible pump 11 can be carried on the top of the frame of the crawler, and the spare submersible pump can be replaced in time when the working submersible pump 5-1 is damaged.

Specifically, in the embodiment, the fire-fighting water supply system further comprises a drainage system 5, wherein the drainage system 5 comprises a submersible pump 5-1, a connecting pipe 5-2, a check valve 5-3, a drain valve 5-4, a flow meter 5-5, a polyurethane fabric reinforced hose 5-6, a fire-fighting quick connector 5-7 and a cut-off valve 5-8. As shown in figure 1, the submersible pump 5-1 is a standard water pump and is convenient to replace. The connecting pipe 5-2 is connected with the submersible pump 5-1 and the check valve 5-3, and pipes with different lengths can be selected according to actual environments. The flow meter 5-5 can realize the detection of the amount of discharged water. The cut-off valve 5-8 can cut off the water flow rapidly and is arranged on the polyurethane fabric reinforced hose 5-6.

Example two

As shown in fig. 12, a second embodiment of the present invention provides an emergency drainage method, which is implemented based on a first embodiment of a variable-wheelbase tracked vehicle for water pump hoisting, and includes the following steps:

and S1, adjusting the width of the track, and changing the wheelbase to adapt to the roadway site.

The step S1 specifically includes the following steps:

s101, extending the supporting legs 2 to enable the crawler to keep stable;

s102, the auxiliary supporting legs 6 are controlled to move transversely, and then the distance between the two crawler traveling mechanisms 1 is controlled to be suitable for the width of a roadway or the width of a traveling rail in the roadway. When the crawler-type traveling mechanism works, the hydraulic system controls the transverse telescopic hydraulic cylinders on the two sides of the frame to extend out of the piston rods at the same time, and the piston rods push the crawler-type traveling mechanisms 1 to move transversely, so that the transverse distance between the two crawlers is increased. Through the effect of auxiliary leg 6, can be fast and the steady distance that changes between the both sides track to walking track in the tunnel and the tunnel of adaptation different width.

S103, retracting the supporting legs. And the four supporting legs of the supporting system 2 are retracted, and the crawler continues to walk.

S2, hoisting the submersible pump;

the step S2 may specifically include the following steps:

s201, moving the tracked vehicle. As shown in fig. 13, the crawler is moved directly above the submersible pump and the hydraulic cylinder 4-3 is operated to extend the piston rod, thereby lowering the link chain 4-2 to just the height of the submersible pump 5-1.

S202, sleeving the circular ring chain on the submersible pump. As shown in figure 13, the circular chain 4-2 is sleeved on two sides of the submersible pump, the hydraulic cylinder 4-3 is operated to contract the piston rod, and the circular chain 4-2 is adjusted to be firmly sleeved on the submersible pump 5-1.

And S203, lifting the submersible pump. Then the piston rod 4-3 is continuously contracted to increase the height of the submersible pump.

And S204, installing a connecting bent pipe. As shown in fig. 14, the installation of the connecting elbow 5-2 to the water inlet of the submersible pump requires that the height of the elbow be slightly above the ground.

And S205, installing a check valve. As shown in FIG. 14, a check valve 5-3 is installed after the elbow pipe 5-2 is connected.

S206, installing a winch. As shown in fig. 14, the winch 10 is installed on the ground, and a steel wire rope is tied to a circular hook at the center of a rear frame, so that the tracked vehicle is prevented from sliding down a slope when entering a roadway and accidents are avoided.

S3, controlling the tracked vehicle to travel below the surface of the accumulated water, completely submerging the submersible pump into the water, connecting the pipeline and controlling the tracked vehicle to extend the supporting legs out, and ensuring the drainage vehicle to drain water stably;

the step S3 may specifically include the following steps:

s301, adjusting the position of the submersible pump in water. As shown in fig. 14, the crawler 1 is controlled to run below the surface of the ponding water, and the submersible pump 5-1 is completely submerged.

And S302, connecting a pipeline. As shown in fig. 14, the pipelines are connected in sequence according to the pipeline connection sequence, and the block valve 5-8 is sleeved outside the polyurethane fabric reinforced hose 5-6.

And S303, extending the supporting legs. And starting the supporting system 2, controlling the hydraulic system to extend the four supporting legs out, and then adjusting the positions of the supporting legs to ensure the stability of the tracked vehicle.

S304, starting the submersible pump 5-1 and starting to drain water.

And S4, when the water level is lowered to the height of the water pump, connecting a new pipeline again, then retracting the supporting legs, and repeating the step S3 until the water drainage is finished.

As shown in fig. 15, the step S4 may specifically include the following steps:

s401, stopping the pump. When the water level is lowered to the height of the water pump, the water is stopped to drain if the submersible pump has an air pumping phenomenon.

S402, closing the block valve. And closing the stop valve 5-8 to stop the water flow.

And S403, opening a quick connector of the hose. The quick connection between two of the polyurethane fabric reinforced hoses 5-6 is opened and a new section of polyurethane fabric reinforced hose is prepared.

And S404, moving the drainage vehicle. The mobile crawler again walks to the position below the surface of the accumulated water, and the submersible pump 5-1 is completely submerged in the water.

And S405, connecting a new hose. And connecting the new polyurethane fabric reinforced hose between the opened polyurethane fabric reinforced hoses, and connecting the quick joints.

S406, opening the block valve. When the pressure reaches the drain level, the shut-off valve 5-8 is opened.

S407, starting the pump. And (5) opening the submersible pump 5-1 to realize quick drainage.

And S408, repeating the steps S401 to S407 until the drainage is finished.

The whole process of the process flow of emergency drainage of the tracked vehicle requires strict cooperation of field technicians and workers.

When the water pumps need to be connected in series when the inclined roadway is deep, the pipeline can be connected with a plurality of water pumps connected in series, and a plurality of tracked vehicles are adopted for transportation, so that drainage relay can be realized, as shown in fig. 16. It should be noted that the crawler is not equipped with a schematic diagram of a series-connected water pump, and the connection mode of the crawler is similar to the schematic diagram of the crawler carrying a single submersible pump.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.