JP2023523819A - Self-propelled tunnel maintenance vehicle - Google Patents

Abstract

A self-propelled tunnel maintenance vehicle is provided. The present invention discloses a self-propelled tunnel maintenance vehicle, comprising a chassis with a cab, a subframe, a self-propelled device and a working device, the sub-frame being connected to the chassis with the cab, and the self-propelled tunnel maintenance vehicle. The device includes four supporting legs fixed to the bottom of the subframe, a movable leg is connected under the supporting leg by a hydraulic cylinder, a running wheel is attached to the bottom of the movable leg, and the working device is is a multi-stage collapsible working device, comprising a plurality of horizontally and vertically unfoldable working stages, said plurality of working stages being capable of covering a quarter arc surface when unfolded Yes, the service vehicle can achieve slow travel and controllable travel speed during construction operations. [Selection drawing] Fig. 1

Description

The present invention relates to a self-propelled tunnel maintenance vehicle, and belongs to the technical field of tunnel maintenance.

With the development of science and technology, the number of road tunnels has increased, and thus the rate of increase of tunnels is higher than the rate of increase of highways themselves. There are numerous problems in tunnels due to limitations in geological conditions, design and construction technology conditions. A study of the constructed road tunnel revealed serious phenomena such as water leakage, lining cracks, back cavities, insufficient lining thickness, and deterioration of concrete strength. Currently, several road tunnels are in an unhealthy state due to deformation, and a large number of tunnels are undergoing maintenance and repair. General tunnel maintenance includes inspection and repair of civil engineering works (cracks in lining, water leakage, etc.); inspection and repair of lighting, ventilation, and monitoring equipment; inspection and repair of mechanical, electrical, and fire rescue facilities. Until now, a large number of tunnels in China have entered the period of maintenance and repair.

At present, when the tunnel maintenance work is less than 2 meters, there is no need for a work stage. There are three types of methods: installing a platform on the ground at the ground, installing a temporary platform on the tail of the truck, and using a general aerial work vehicle. transport to the surface. In the case of the method of installing the platform, the height is fixed and cannot be adjusted, the connection between the platform at the tail of the truck and the loading platform is unstable, and the platform vibrates violently while the vehicle is running, which is detrimental to the safety of workers. It cannot be secured, and work efficiency is low. The general aerial work platform has a small work bucket, low loading capacity, can only realize point-to-point detection, cannot work while traveling, and has low work efficiency. In addition, the arm frame structure rotates out from the width of the car body and occupies two lanes, affecting vehicle traffic.

The information in the background is merely to provide a better understanding of the general background of the invention, and it is acknowledged that such information constitutes prior art known to those skilled in the art, or is in any way should not be regarded as suggestive.

SUMMARY OF THE INVENTION The object of the present invention is to provide a self-propelled tunnel maintenance vehicle to overcome the deficiencies of the prior art. It can be realized, the height and width adjustment and point-to-point work that exist in the current tunnel maintenance work are not possible, the load capacity of the work bucket is low, it cannot travel during work, and the road is occupied during work. , work efficiency is reduced, safety is low, and a series of other problems are solved.

To achieve the above objects, the present invention is realized by the following technical solutions.

A self-propelled tunnel maintenance vehicle, comprising a chassis with a cab, a subframe, a self-propelled device and a working device, the sub-frame being connected to the chassis with the cab, the self-propelled device being mounted on the bottom of the sub-frame The working device includes four fixed supporting legs, a movable leg is connected under the supporting leg by a hydraulic cylinder, and a running wheel is attached to the bottom of the movable leg, and the working device is multi-stage foldable. a working device comprising a plurality of horizontally and vertically deployable working stages, said plurality of working stages being capable of covering a quarter of an arcuate surface when deployed, and a bottom of said working device A subframe is connected to through a first rotation mechanism.

In the self-propelled device according to the present invention, the chassis may be driven by the transfer case, and the traveling of the self-propelled device may be driven via the subframe connected to the chassis. A reduction gear may be attached to drive the running of the subframe using the running wheels as driving wheels. The specific structures and connection methods of the mechanisms such as the transfer case and the hub speed reducer for the above two types of drive methods can be referred to or directly adopted from the prior art, and are not described here. During maintenance work, the movable legs are extended by the hydraulic cylinder, the running wheels are placed on the ground, the top drive is rigidly supported, and the drive mechanism works together with the chassis tires to achieve low-speed running in the working state. , while traveling, the tunnel maintenance device can cover half of the arc-shaped tunnel surface while traveling, which can greatly improve the construction work efficiency.

In addition, the width of the subframe is less than the width of the chassis with cab, and the subframe is a transition device between the working device and the chassis with cab, which increases the rigidity of the top drive and stabilizes the working stage during work. improve sexuality. The cab-equipped chassis is a carrier of the tunnel maintenance work device, the first rotation mechanism is provided at the center position of the subframe, and the rotation angle range of the first rotation mechanism is ±90 degrees, whereby the work device is can work on both sides, solving the problem of not being able to turn on a single-lane highway.

Further, the working device includes a telescopic arm, the telescopic arm includes a base arm and a deployment arm, the base arm has one end connected to the counterweight and the other end slidably connected to the deployment arm; A first rotating mechanism is provided on the bottom of the base arm, and the plurality of working stages are provided on the deployment arm.

Further, preferably, the distance from the center of the first rotating mechanism to the outer edge of the counterweight is set to 1/2 or less of the width of the subframe, so that the counterweight is always held within the vehicle body when the working device rotates. so that only one lane is occupied during work and normal vehicle traffic is not affected.

Further, the free end of the deploying arm is fixedly connected to a vertically deployable width variable working mechanism, and the inner side of the free end is rotatably connected to one end of the first working stage via a second rotating mechanism. , the rotation angle range of the second rotating mechanism is ±90 degrees, so that the first working stage can be horizontally deployed and rearwardly extended along the tunnel direction to increase the tunnel working area; The width-variable working mechanism has a plurality of working stages, which are distributed step by step when unfolded, and the longitudinal direction of the first working stage and the width-variable working mechanism are set in the same direction as the retractable arm in the retracted state. The first work stage may be provided with a movable escalator and a fixed ladder. Specifically, the first work stage may be provided to include a stage bottom plate and a guardrail, and the guardrail may be a stage bottom plate. is provided on the edge of the stage, and a folding handrail is attached to the top of the guardrail. To reduce space, the movable escalator and fixed ladder are provided on both sides of the stage bottom plate close to one end of the second rotating mechanism, so that an operator can proceed to the stage and move between each stage. To facilitate, the movable escalator is rotatably connected to the stage bottom plate so that it can be folded into the stage or ejected out of the stage, and when it is in a vertical position, it can also be a guardrail. .

Further, the width-variable working mechanism includes a width-variable main arm, one end of which is hinged to a connection base, the other end of which is attached with a third work stage, and a plurality of second work stages in the center. Mounted in parallel and spaced apart, a fixed working stage is mounted on the top of said connecting platform, and a bottom is fixed on the deploying arm, between the variable width main arm and the connecting platform, for lifting the variable width hydraulic cylinder , a width-variable main arm is provided, and the third work stage, the second work stage and the fixed work stage are distributed step by step from top to bottom when the width-variable main arm is lifted, and the number of the second work stages and The spacing can be adjusted according to the specific construction situation. Two connecting rods are provided on both sides of the width-variable main arm in parallel with each other, and a third work stage and a connection table are connected to both ends of the connecting rods, and the connection table, the second work stage and the third work stage are , are both hinged to the variable width main arm and connecting rod by a mounting base. Specifically, the variable-width main arm and the connecting rod may be provided with a plurality of groups of hinge points that are staggered at equal intervals, and each group of hinge points is connected to a mounting base. , The adjacent mounting base forms a parallelogram structure with a variable width main arm and connecting rods and a variable angle, aligning multiple work stages in a retracted state and aligning with the lifting of the variable width main arm during operation and the tread surface of the working stage is always horizontal, the connecting platform includes a connecting column, the working stage is mounted and fixed on the top of the connecting column, and the bottom is bolted The upper part of the connecting column is hingedly connected to the variable width main arm, the connecting rod and the variable width hydraulic cylinder by a mounting base. A guardrail may be installed on the side of the step of the second work stage to ensure the construction safety of the worker, and an auxiliary ladder may be installed at the bottom to facilitate the movement of the worker between stages. may be installed, a guardrail may be installed on the side of the fixed working stage, and a movable door may be installed on one side facing the first working stage during operation, the movable door An auxiliary ladder may be installed at the bottom of one of the treads, and handrails may be installed at the sides so that the operator can easily enter the fixed work stage from the first work stage. More specifically, the width of the third work stage is made larger than the width of the second work stage, and the length of the first work stage is made larger than the length of the second work stage along the direction of the telescopic arm. It can solve the problem of large work volume at the top and bottom of the tunnel, increase the work area and improve work efficiency. The second working stage and the fixed working stage arranged in stages can cover the haunch position well, the third working stage covers the top of the tunnel, the first working stage covers the bottom of the tunnel, and so on. When the equipment is recovered, the equipment stages are arranged in two layers, the first working stage is in the bottom layer, the second working stage, the fixed working stage and the third working stage are in the second layer. It is placed horizontally above one work stage, and when it is installed in the vehicle, it occupies a small space and has a simple appearance.

The invention finds particular application in tunnel maintenance work and can also be used in other fields of work.

The beneficial effects achieved by the present invention compared with the prior art are as follows.

(1) The present invention provides a dedicated tunnel maintenance work device, which has a high vehicle loading capacity, can be self-propelled at low speed, can control the traveling speed, and can be multi-stage foldable during traveling. The working device can cover half of the arc tunnel surface, the coverage area is large, the construction work efficiency is greatly improved, the safety of the whole car is high, the structure is simple and the cost is low.
(2) The tunnel maintenance work device only occupies one lane during work and does not affect normal vehicle traffic.
(3) When installed in the whole vehicle, the equipment stage is divided into two layers and installed above the chassis, so that when installed in the vehicle, the space occupied is small and the appearance is simple.
(4) The tunnel maintenance work device can work on both sides, effectively solving the problem of not being able to make a U-turn on a one-lane highway.
(5) The multi-stage structure has the characteristics of wide covering surface, large stage area, high loading capacity, safe operation and high efficiency.

1 is a side structural schematic diagram of a stored state of an embodiment of a self-propelled tunnel maintenance vehicle according to the present invention; FIG. 1 is a side structural schematic diagram of a working state of an embodiment of a self-propelled tunnel maintenance vehicle according to the present invention; FIG. 1 is a schematic three-dimensional structure diagram of a working state of an embodiment of a self-propelled tunnel maintenance vehicle according to the present invention; FIG. FIG. 3 is a side view and a three-dimensional structural schematic view of the self-propelled device and the subframe according to the embodiment of the present invention;

The invention will be further described below with reference to the drawings. The following examples are only for more clearly describing the technical solutions of the present invention, and cannot limit the protection scope of the present invention.

In describing the present invention, "center", "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", Directions or positional relationships indicated by azimuths such as "inner" and "outer" are directions or positional relationships indicated based on the drawings, and the purpose is simply to describe the present invention easily and simplify the description. should not be construed as limiting the invention, as it does not expressly or imply that the device or elements shown necessarily have a particular orientation, or that they are constructed or operated in a particular orientation. Also, the terms "first", "second", etc. are only for the purpose of describing purposes and are understood to implicitly include the number of technical features that express or imply or indicate relative importance. should not be done. Thus, a feature defined as "first," "second," etc. expressly or implicitly includes one or more of such features. In the description of the present invention, "plurality" means two or more, unless stated otherwise.

In the description of the present invention, the terms "attach", "couple", "connect" should be understood broadly, unless explicitly defined or limited, as to what is being described, e.g. It may be connected, removably connected, integrally connected, mechanically connected, electrically connected, directly connected, and intermediate They may be indirectly connected through a medium, or the insides of the two elements may be communicated. A person skilled in the art may understand the specific meaning of the above terms in the present invention according to the specific situation.

(Example)
The self-propelled tunnel maintenance vehicle shown in FIGS. 1 to 4 includes a cab-equipped chassis 1, a subframe 2, a self-propelled device 3 and a work device 4, the subframe 2 being connected to the cab-equipped chassis 1, The width of the subframe 2 is equal to or less than the width of the chassis 1 with a cab, and the self-propelled device 3 includes four support legs 31 fixed to the bottom of the subframe 2, and below the support legs 31 , a movable leg 32 is connected by a hydraulic cylinder, a running wheel 33 is attached to the bottom of the movable leg 32, a motor and a hub reduction gear are installed in the running wheel 33, and the running wheel 33 serves as a driving wheel of the subframe 2. drive running. The working device 4 is a multi-stage collapsible working device, and includes a plurality of work stages that can be horizontally and vertically unfolded. The bottom of the working device 4 is connected to the sub-frame 2 via a first rotating mechanism 5, the first rotating mechanism 5 is provided at the center of the sub-frame 2, and has a rotation angle range of ± It is 90 degrees, and the working device 4 can work on both sides, and the problem of not being able to make a U-turn on a one-lane highway is solved.

The working device 4 according to this embodiment includes a telescopic arm 41, the telescopic arm 41 includes a base arm 411 and a deployment arm 412, the base arm 411 has one end connected to the counterweight 42 and the other end The first rotation mechanism 5 is slidably connected to the deployment arm 412 , and the first rotation mechanism 5 is provided on the bottom of the base arm 411 . , so that when the working device rotates, the counterweight is always inside the vehicle body, and only one lane is occupied during work, and normal vehicle traffic is not affected. The free end of the deployment arm 412 is fixedly connected to the variable width working mechanism 44, the inner side of the free end is rotatably connected to one end of the first working stage 43 via the second rotating mechanism 45, The rotation angle range of the two-rotation mechanism 45 is ±90 degrees, so that the first working stage 43 can be horizontally deployed and extended backward along the tunnel direction to increase the tunnel working area. be able to. In the working device 4, the longitudinal direction of the first working stage 43 and the variable width working mechanism 44 are provided in the same direction as the extendable arm 41 in the retracted state.

The first work stage 43 includes a stage bottom plate 431 and guard rails 432. The guard rails 432 are provided on the edge of the stage bottom plate. A ladder 434 is provided to facilitate operator access to the stages and movement between stages, and the movable escalator 433 is rotatably connected to the stage bottom plate 431 to move it. It can be folded into the stage or released out of the stage.

The width-variable working mechanism 44 includes a width-variable main arm 441, one end of which is hinge-connected to a connection base 443, the other end of which is attached to a third work stage 444, and three 3rd stages in the center. Two working stages 445 are mounted in parallel and spaced apart, a fixed working stage 446 is mounted on the top of the connection table 443, and the bottom is fixed to the unfolding arm 412, between the width variable main arm 441 and the connection table 443. is provided with a width-variable main arm 441 to lift the width-variable hydraulic cylinder 448, and the third work stage 444, the second work stage 445 and the fixed work stage 446 are lifted when the width-variable main arm 441 is lifted. distributed stepwise from . Two connecting rods 442 are provided on both sides of the width-variable main arm 441 in parallel. A third working stage 444 and a connecting table 443 are connected to both ends of the connecting rods 442, respectively. 445 and third work stage 444 are both hingedly connected to width variable main arm 441 and connecting rod 442 by mounting base 447 . Specifically, the width-variable main arm 441 and the connecting rod 442 are provided with a plurality of groups of hinge points that are staggered at the same intervals. The mounting base 447 forms a parallelogram structure with variable width main arms 441 and connecting rods 442 with variable angles, aligns a plurality of work stages in a retracted state, and lifts the variable width main arms 441 during work. and the tread surface of the working stage is always horizontal, the connecting platform includes a connecting column, a fixed working stage 446 is attached to the top of the connecting column, and the bottom is bolted. , and the upper part of the connection column is hingedly connected to the width-variable main arm 441 , connecting rod 442 and width-variable hydraulic cylinder 448 by the mounting base 447 .

In this embodiment, the width of the third working stage 444 is greater than the width of the second working stage 445 along the direction of the telescopic arm 41, the length of the first working stage 43 is greater than the length of the second working stage 445, It can solve the problem of large work volume at the top and bottom of the tunnel, increase the work area and improve work efficiency. The second working stage 445 and fixed working stage 446 arranged in stages can cover the haunch position well, the third working stage 444 covers the top of the tunnel and the first working stage 43 covers the bottom of the tunnel. , the simultaneous operation of the tunnel half-section is realized, and when the equipment is recovered, the equipment stages are arranged in two layers, the first working stage 43 is in the bottom layer, the second working stage 445, the fixed working stage 446 and the second working stage 446 The third working stage 444 is horizontally arranged above the first working stage 43, and the space occupied when taken into the vehicle is small, and the appearance is simple.

The above are merely preferred embodiments of the present invention, and it should be pointed out that those skilled in the art may make various further improvements and modifications without departing from the principles of the present technology. Improvements and modifications of the above should also be included in the protection scope of the present invention.

(Appendix)
(Appendix 1)
comprising a cab-equipped chassis (1), a subframe (2), a self-propelled device (3) and a working device (4), wherein the sub-frame (2) is connected to the cab-equipped chassis (1), the self-propelled The device (3) includes four support legs (31) fixed to the bottom of the subframe (2), and under the support legs (31), a movable leg (32) is connected by a hydraulic cylinder to move the A running wheel (33) is attached to the bottom of the leg (32), the working device (4) is a multi-stage foldable working device, and has a plurality of horizontally and vertically unfoldable working stages. wherein the plurality of working stages can cover a quarter arc surface when unfolded, and a subframe (2) is mounted on the bottom of the working device (4) via a first rotating mechanism (5) A self-propelled tunnel maintenance vehicle characterized by being connected.

(Appendix 2)
The width of the sub-frame (2) is equal to or less than the width of the vehicle body of the chassis (1) with cab, and the first rotation mechanism (5) is provided at the center position of the sub-frame (2). ) is ±90 degrees, the self-propelled tunnel maintenance vehicle according to appendix 1.

(Appendix 3)
Said working device comprises a telescopic arm (41), said telescopic arm (41) comprising a base arm (411) and a deployment arm (412), said base arm (411) being connected at one end to a counterweight (42). and the other end is slidably connected to the deployment arm (412), the first rotating mechanism (5) is provided at the bottom of the base arm (411), and the plurality of working stages are mounted on the deployment arm (412). Self-propelled tunnel maintenance work vehicle according to appendix 1, characterized in that it is provided.

(Appendix 4)
Self-propelled according to appendix 3, characterized in that the distance from the center of the first rotating mechanism (5) to the outer edge of the counterweight (42) is 1/2 or less of the width of the subframe (2). Type tunnel maintenance work vehicle.

(Appendix 5)
The free end of the deploying arm (412) is fixedly connected to the vertically deployable width variable working mechanism (44), and the inner side of the free end moves to the first working stage (412) via the second rotating mechanism (45). 43), the rotation angle range of the second rotation mechanism (45) is ±90 degrees, the first work stage (43) can be horizontally deployed, and the width variable work The mechanism (44) has a plurality of working stages, which are distributed step by step when unfolded. The self-propelled tunnel maintenance vehicle according to appendix 3, wherein the self-propelled tunnel maintenance vehicle is provided in the same direction.

(Appendix 6)
The self-propelled tunnel maintenance vehicle according to Appendix 5, characterized in that the first work stage (43) is further provided with a movable escalator (433) and a fixed ladder (434).

(Appendix 7)
The width-variable working mechanism (44) comprises a width-variable main arm (441), one end of which is hinged to a connection base (443), and the other end of which is connected to a third work stage (444). ), a plurality of second working stages (445) are mounted in parallel and spaced apart in the center, a fixed working stage (446) is mounted on the top of said connection platform (443), and a deployment arm (446) is mounted on the bottom. 412), and a width-variable hydraulic cylinder (448) is provided between the width-variable main arm (441) and the connection base (443) to lift the width-variable main arm (441). In appendix 5, characterized in that the stage (444), the second working stage (445) and the fixed working stage (446) are distributed stepwise from top to bottom when lifting the width variable main arm (441) Self-propelled tunnel maintenance work vehicle described.

(Appendix 8)
Two connecting rods (442) are provided on both sides of the width-variable main arm (441) in parallel, and a third work stage (444) and a connecting base (443) are connected to both ends of the connecting rods (442), respectively, The connecting base (443), the second working stage (445) and the third working stage (444) are all hingedly connected to the width-variable main arm (441) and connecting rod (442) by a mounting base (447). A multi-stage collapsible tunnel maintenance work device according to clause 7, characterized in that:

1 - chassis with cab, 2 - subframe, 3 - self-propelled device, 31 - supporting leg, 32 - movable leg, 33 - running wheel, 4 - working device, 41 - telescopic arm, 411 - base arm, 412 - deployment arm, 42 - counterweight, 43 - first working stage, 431 - stage bottom plate, 432 - guardrail, 433 - movable escalator, 434 - fixed ladder, 44 - width variable working mechanism, 441 - width variable main arm, 442 - connecting rod, 443 - connecting table, 444 - third working stage, 445 - second working stage, 446 - fixed working stage, 447 - mounting base, 448 - variable width hydraulic cylinder, 45 - second rotating mechanism, 5 - third 1 rotation mechanism.

Claims (8)

comprising a cab-equipped chassis (1), a subframe (2), a self-propelled device (3) and a working device (4), wherein the sub-frame (2) is connected to the cab-equipped chassis (1), the self-propelled The device (3) includes four support legs (31) fixed to the bottom of the subframe (2), and under the support legs (31), a movable leg (32) is connected by a hydraulic cylinder to move the A running wheel (33) is attached to the bottom of the leg (32), the working device (4) is a multi-stage foldable working device, and has a plurality of horizontally and vertically unfoldable working stages. wherein the plurality of working stages can cover a quarter arc surface when unfolded, and a subframe (2) is mounted on the bottom of the working device (4) via a first rotating mechanism (5) A self-propelled tunnel maintenance vehicle characterized by being connected. The width of the sub-frame (2) is equal to or less than the width of the vehicle body of the chassis (1) with cab, and the first rotation mechanism (5) is provided at the center position of the sub-frame (2). ) is within a range of ±90 degrees. Said working device comprises a telescopic arm (41), said telescopic arm (41) comprising a base arm (411) and a deployment arm (412), said base arm (411) being connected at one end to a counterweight (42). and the other end is slidably connected to the deployment arm (412), the first rotating mechanism (5) is provided at the bottom of the base arm (411), and the plurality of working stages are mounted on the deployment arm (412). The self-propelled tunnel maintenance vehicle according to claim 1, characterized in that it is provided. 4. Automobile according to claim 3, characterized in that the distance from the center of the first rotating mechanism (5) to the outer edge of the counterweight (42) is less than half the width of the subframe (2). Running type tunnel maintenance work vehicle. The free end of the deploying arm (412) is fixedly connected to the vertically deployable width variable working mechanism (44), and the inner side of the free end moves to the first working stage (412) through the second rotating mechanism (45). 43), the rotation angle range of the second rotation mechanism (45) is ±90 degrees, the first work stage (43) can be horizontally deployed, and the width variable work The mechanism (44) has a plurality of working stages, which are distributed step by step when unfolded. 4. The self-propelled tunnel maintenance vehicle according to claim 3, wherein the vehicles are provided in the same direction. The self-propelled tunnel maintenance vehicle according to claim 5, characterized in that said first working stage (43) is further provided with a movable escalator (433) and a fixed ladder (434). The width-variable working mechanism (44) comprises a width-variable main arm (441), one end of which is hinged to a connection base (443), and the other end of which is connected to a third work stage (444). ), a plurality of second working stages (445) are mounted in parallel and spaced apart in the center, a fixed working stage (446) is mounted on the top of said connection platform (443), and a deployment arm (446) is mounted on the bottom. 412), and a width-variable hydraulic cylinder (448) is provided between the width-variable main arm (441) and the connection base (443) to lift the width-variable main arm (441). 5. The stage (444), the second working stage (445) and the fixed working stage (446) are distributed stepwise from top to bottom when lifting the width variable main arm (441). The self-propelled tunnel maintenance work vehicle described in . Two connecting rods (442) are provided on both sides of the width-variable main arm (441) in parallel, and a third work stage (444) and a connecting base (443) are connected to both ends of the connecting rods (442), respectively, The connecting base (443), the second working stage (445) and the third working stage (444) are all hingedly connected to the width-variable main arm (441) and connecting rod (442) by a mounting base (447). 8. A multi-stage collapsible tunnel maintenance work device according to claim 7, characterized in that:

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