CN113202020A - Arch rib maintenance vehicle suitable for box type arch rib inspection - Google Patents

Abstract

The invention relates to the technical field of box type arch rib maintenance, and particularly discloses an arch rib maintenance vehicle suitable for box type arch rib inspection, which comprises a travelling mechanism, upper platform components, vertical truss components and a horizontal sliding rotary truss, wherein the upper platform components are arranged on the travelling mechanism and are mutually hinged, the vertical truss components are hinged with one end of each upper platform component, and the horizontal sliding rotary truss is connected with the bottom of each vertical truss component and is in rotary fit with the bottom of each vertical truss component; the horizontal sliding rotary truss and the vertical truss component are mutually vertical and move along the horizontal direction; and a leveling device is arranged on the travelling mechanism. The invention can effectively realize the maintenance of the upper surface, the outer side surface, the bottom surface and the cross brace of the arch ring; the barrier can be avoided according to the maintenance requirement.

Description

Arch rib maintenance vehicle suitable for box type arch rib inspection

Technical Field

The invention relates to the technical field of maintenance of box-type structural arch ribs, in particular to an arch rib maintenance vehicle suitable for box-type arch rib inspection.

Background

With the development of bridge technology, the construction of continuous multi-span through-put type tie bar complex arch bridges across rivers, rivers and the like is gradually increased. The bottom of the steel beam can be maintained through the inspection of a mature suspension type beam bottom, but the inspection of the coverage of the outer surfaces of box-type structure arch rings above a bridge floor, a suspender anchor head, arch rib connecting surfaces between arch rings on two sides, the inner side surfaces of the arch rings, a wind brace and the like is difficult.

The main structural form of the maintenance vehicle adopted by the conventional maintenance of the arch rib with the box-type structure is a combined structural form of a walking chassis, a suspension arm, a hanging basket and the like.

The maintenance car can realize the inspection of the upper surface, the outer side surface, the bottom surface and the arch rib connecting bottom surface of the arch ring through moving along the bridge to the track and lifting the hanging basket, but has the following defects:

1. in the hanging basket operation process, the swinging is large, the wind resistance is low, and great potential safety hazards exist;

2. the inner side surface of the arch ring and the outer surfaces of the wind braces and the like are difficult to cover and inspect;

3. for a multi-span arch bridge, the maintenance vehicle needs to be arranged on each arch, and the overall cost is high;

4. the maintenance vehicle is inconvenient to disassemble and assemble, is exposed to an external field for a long time, is easy to damage, and has higher maintenance cost;

5. meanwhile, when the arch rib maintenance vehicle is not used, the maintenance vehicle is placed on an arch ring of the bridge, so that the overall attractiveness of the bridge is affected.

Disclosure of Invention

The invention aims to solve the technical problem of providing an arch rib maintenance vehicle suitable for box type arch rib inspection, which can effectively realize maintenance on the upper surface, the outer side surface, the bottom surface and a cross brace of an arch ring.

The technical problem to be solved by the invention is as follows:

an arch rib maintenance vehicle suitable for box-type arch rib inspection comprises a travelling mechanism, upper platform assemblies, vertical truss assemblies and horizontal sliding rotary trusses, wherein the upper platform assemblies are mounted on the travelling mechanism and are mutually hinged, the vertical truss assemblies are hinged with one ends of the upper platform assemblies, and the horizontal sliding rotary trusses are connected with the bottoms of the vertical truss assemblies and are in rotary fit with the bottoms of the vertical truss assemblies; the horizontal sliding rotary truss and the vertical truss component are mutually vertical and slide along the horizontal direction; and a leveling device is arranged on the travelling mechanism.

During operation, the walking mechanism can be suitable for the change of the outer side surface of the arch ring and moves along the slope, the horizontally sliding rotary truss can reach a specified position through the vertical movement of the vertical truss assembly, then obstacles at the bottom of the arch ring are effectively avoided through the combined movement of rotation and sliding in the horizontal direction, and the overhaul of the bottom and the side surface of the arch ring by maintainers is realized; the maintenance of box-type arch ribs with different arch ring section heights and gradients is effectively realized through the vertical lifting; the application range is wider. The leveling device ensures that the main frame hinged with the travelling mechanism is always in a horizontal state when the arch rib maintenance vehicle is positioned at different gradient positions in the whole maintenance process.

The vertical truss assembly has a vertical lifting function and can meet the requirements of arch ring gradient and section height change.

In some possible embodiments, in order to effectively realize the movement of the walking mechanism along the slope direction of the arch ring; the walking mechanism comprises a chassis frame connected with the upper platform assembly, a walking driving trolley installed on the chassis frame, and a track matched with the walking driving trolley for use, wherein the track is installed on the upper surface of an arch ring in the box-type arch rib and is arranged along the gradient of the arch ring.

In some possible embodiments, in order to ensure that the device can be always horizontal in the walking process, the safety is improved; the leveling device comprises a rotating shaft assembly and a leveling driving device, wherein two ends of the rotating shaft assembly are rotatably arranged on the chassis frame and connected with the upper platform assembly, and the leveling driving device is arranged on the chassis frame.

In some possible embodiments, the upper platform assembly includes a first mounting frame hinged to the traveling mechanism, a first main platform installed between the first mounting frame and the vertical truss assembly and hinged to the vertical truss assembly, and a second main platform hinged to a side of the first mounting frame away from the first main platform.

In some possible embodiments, in order to effectively realize that the upper platform assembly can be in a horizontal state during operation and can be overhauled on the cross brace on the box-type arch rib; the upper platform assembly also comprises a counterweight arranged on the second main platform and a rail type crane ship which is in sliding fit with the second main platform and moves close to or far away from the mounting frame in a linear manner; the track type crane ship is provided with a first vertical lifting mechanism for driving the track type crane ship to lift vertically.

In some possible embodiments, in order to effectively realize the horizontal sliding rotary truss; the device moves vertically, so that the device is further suitable for overhauling box type arch ribs with different gradients and section heights; the vertical truss assembly comprises a fixed truss, a lifting truss, a vertical lifting driving mechanism II and a falling prevention device, wherein one side of the fixed truss is hinged with the upper platform assembly and is vertically arranged, the lifting truss is in sliding fit with the fixed truss and vertically moves linearly along the fixed truss, the vertical lifting driving mechanism II drives the lifting truss to vertically move linearly along the fixed truss, and the falling prevention device is arranged; the bottom of the lifting truss is connected with the horizontal sliding rotary truss.

In some possible embodiments, to avoid falling during maintenance; the anti-falling device comprises an anti-falling structure A, an anti-falling structure B and an anti-falling structure C;

the anti-falling structure A comprises a stop block arranged on one side of the lifting truss far away from the horizontal sliding rotary truss 4;

the anti-falling structure B comprises a buffer which is arranged at the top of the fixed truss and is matched with the stop block for use;

the anti-falling structure C comprises a gear C which is rotatably arranged in the fixed truss and a rack C which is meshed with the gear C and is arranged in the lifting truss; the rack C is vertically arranged.

In some possible embodiments, in order to guarantee stability during vertical lifting; and the second lifting driving mechanism comprises a lifting device and a guiding device arranged on the fixed truss.

In some possible embodiments, in order to effectively realize the rotation and sliding of the horizontal sliding rotary truss in the horizontal direction, the maintenance of different positions at the bottom of the arch ring and the maintenance of the side surface of the arch ring are realized; the horizontal sliding rotary truss comprises a horizontal truss, a rotary driving mechanism connected with the fixed truss, a sliding hanging bracket respectively connected with the rotary driving mechanism and the horizontal truss, and a horizontal sliding mechanism used for controlling the horizontal truss to do linear motion in the horizontal direction.

In some possible embodiments, in order to guarantee the stability of the horizontal truss during the maintenance work; the horizontal sliding rotary truss further comprises an electromagnetic absorption device arranged at the end part of the horizontal truss close to one side of the bottom of the arch ring.

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

the invention can effectively carry out maintenance work on the side surface, the upper surface and the bottom surface of the arch ring and the cross brace between the arch rings;

in the using process, the rotary driving mechanism can effectively avoid the obstacles at the lower part of the arch ring, so that the condition that the inspection cannot be carried out due to the fact that the obstacles cannot be avoided in the inspection process is effectively improved;

the lifting truss is provided with the fixed truss, the lifting truss and the lifting driving mechanism II, so that the overall shaking in the lifting process can be reduced, and the safety of operation is improved;

all the connecting parts of the invention are connected by pin shafts, so the invention is convenient to install and dismount and reduces the maintenance cost of the device.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a vertical truss assembly of the present invention;

FIG. 3 is a schematic structural view of the horizontal sliding rotary truss of the present invention;

FIG. 4 is a schematic structural view of a traveling mechanism according to the present invention;

FIG. 5 is a view showing the working state of the inspection apparatus for the outer side of the arch ring according to the present invention;

FIG. 6 is a view showing the working state of the present invention during inspection of the bottom of the arch ring;

FIG. 7 is a diagram illustrating the operation of the present invention in repairing the wale;

FIG. 8 is a schematic plan view of the structure of FIG. 4;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 8;

FIG. 10 is an enlarged partial schematic view of FIG. 9;

FIG. 11 is a schematic cross-sectional view of C-C of FIG. 8;

FIG. 12 is a schematic cross-sectional view taken along line D-D in FIG. 8;

wherein: 1. a traveling mechanism; 10. a chassis frame; 11. a leveling drive device; 12. driving the trolley; 13. a follow-up trolley; 14. a rotating shaft A; 15. a connecting frame; 103. a box body; 106. a slewing bearing; 2. an upper platform assembly; 21. a first main platform; 22. a first mounting frame; 23. a second main platform; 24. a rail-mounted crane vessel; 3. a vertical truss assembly; 31. a lifting truss; 32. fixing the truss; 33. a second lifting driving mechanism; 331. a hoisting system; 332. a pulley block A; 34. a fall arrest device; 341. a stopper; 342. a buffer; 343. a rack C; 344. a gear C; 4. horizontally sliding a revolving truss; 41. a horizontal truss; 42. a rotation driving mechanism; 43. a horizontal sliding mechanism; 44. an electromagnetic attraction device; 400. a traveling section; 401. a chain assembly; 402. a trolley driving mechanism; 4001. a guide wheel; 4002. a limiting wheel; 4003. a load-bearing wheel; 4011. a chain case; 402. a trolley driving mechanism; 4021. a travel drive device; 4022. a sprocket; 6. a slewing bearing; 7. a sliding bearing; 8. a distance sleeve; 100. a track.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.

In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the drawings of the present invention, it should be understood that different technical features which are not mutually substituted are shown in the same drawing only for the convenience of simplifying the drawing description and reducing the number of drawings, and the embodiment described with reference to the drawings does not indicate or imply that all the technical features in the drawings are included, and thus the present invention is not to be construed as being limited thereto.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. Reference herein to "first," "second," and similar words, does not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. In the implementation of the present application, "and/or" describes an association relationship of associated objects, which means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of the present application, the meaning of "a plurality" means two or more unless otherwise specified. For example, the plurality of positioning posts refers to two or more positioning posts. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention will be described in detail below.

As shown in figures 1-12 of the drawings,

an arch rib maintenance vehicle suitable for box type arch rib inspection comprises a travelling mechanism 1, an upper platform assembly 2, a vertical truss assembly 3 and a horizontal sliding rotary truss 4, wherein the upper platform assembly 2 is installed on the travelling mechanism 1 and is mutually hinged, the vertical truss assembly 3 is hinged with one end of the upper platform assembly 2, and the horizontal sliding rotary truss 4 is connected with the bottom of the vertical truss assembly 3 and is in rotary fit with the bottom of the vertical truss assembly; the horizontal sliding rotary truss 4 and the vertical truss component 3 are vertical to each other and slide along the horizontal direction; the walking mechanism 1 is provided with a leveling device.

During operation, the walking mechanism 1 can be suitable for the change of the outer side surface of the arch ring and moves along the slope, the horizontal sliding rotary truss 4 can reach a specified position through the vertical movement of the vertical truss component 3, and then the obstacles at the bottom of the arch ring are effectively avoided through the combined movement of rotation and sliding in the horizontal direction, so that the overhaul of the bottom and the side surface of the arch ring by maintainers is realized; the maintenance of box-type arch ribs with different arch ring section heights and gradients is effectively realized through the vertical lifting; the application range is wider.

The composite motion of rotation and sliding can rotate first and then slide; in order to improve the working efficiency, synchronous slippage during rotation is adopted.

In some possible embodiments, as shown in fig. 5, in order to effectively realize the movement of the running gear 1 in the arch slope direction; the walking mechanism 1 comprises a chassis frame 10 connected with the upper platform assembly 2, a walking driving trolley installed on the chassis frame 10, and a track 100 matched with the walking driving trolley for use, wherein the track 100 is installed on the upper surface of an arch ring in a box-type arch rib and is arranged along the gradient of the arch ring.

The walking drive trolley is mainly used for walking along the outer side of the arch ring under the matching of the walking drive trolley and the rail 100, and then the maintainers can overhaul the side face of the arch ring, the bottom of the arch ring and different cross braces.

Preferably, as shown in fig. 5-7, the rails 100 are two sets installed on the top surface of the arch ring; when the tracks 100 are two groups, the walking driving trolley comprises a driving trolley 12 and a following trolley 13 which are respectively matched with the two groups of tracks 100; the follower carriage 13 will travel along the rail 100 at the same time as the drive carriage 12. The driving trolley 12 and the following trolley 13 are respectively arranged on the chassis frame 10.

As a preferred embodiment, a box body 103 is arranged between the chassis frame 10 and the walking driving trolley, and the box body 103 is respectively connected with the walking driving trolley;

a slewing bearing 106 is arranged between the box body 103 and the chassis frame 10, so as to effectively realize adjustment, drive the center distance between the trolley 12 and the box body 3 and avoid the formation of an included angle between the walking drive trolley and the box body 3 in the walking direction in the walking process; the box body 3 comprises a follow-up body arranged along the length direction of the arch ring and a sliding bearing 7 which is rotatably arranged at the top of the follow-up body, the axis of the sliding bearing 7 is mutually vertical to the length direction of the track 100, a slewing bearing 6 connected with the sliding bearing 7 is arranged on the chassis frame 1, and the slewing bearing 6 is sleeved outside the sliding bearing 7 through a distance sleeve 8;

wherein, the length of a group of distance sleeves 8 along the axial direction of the sliding bearing 7 is equal to the length of the sliding bearing 7; the length of the other three sets of distance sleeves 8 in the axial direction of the sliding bearing 7 is smaller than the length of the sliding bearing 7.

As shown in fig. 11 and 12, the chassis frame 10 is connected with the sliding bearings 7 in the four box bodies 3 through four pivoting bearings 106, so that the trolley is driven to travel during traveling, and the box bodies 3 form an included angle in the traveling direction, a distance sleeve 8 with the length equal to that of the sliding bearing 7 is sleeved on one set of the sliding bearing 7, and distance sleeves 8 with the length smaller than that of the sliding bearing 7 are sleeved on the other three sets of the sliding bearing 7; the arrangement enables the walking driving trolley and the box body 3 to form an included angle in the walking direction to be effectively adjusted in the walking process.

The distance sleeve 8 is sleeved on the outer side of the sliding bearing 7 and connected with the slewing bearing 6, and along with the change of the gradient of the arch ring, the slewing bearing 6 can realize the rotation around the axis of the replaced bearing 7 in a small range through the distance sleeve 8, so that the distance sleeve is matched with the gradient.

Meanwhile, the chassis frame 1 and the box body 3 are connected through the assembly of the slewing bearing 6 so that the chassis frame can rotate freely, and the device is suitable for installation dimension errors of the track 100 in the linear direction and the width direction on an arch rib plane, so that the device is suitable for dimension errors of the track 100 in a wide range in the linear direction and the width direction during installation.

In some possible embodiments, in order to ensure that the device can be always horizontal in the walking process, the safety is improved; the leveling device comprises a rotating shaft assembly and a leveling driving device, wherein two ends of the rotating shaft assembly are rotatably arranged on the chassis frame 10 and connected with the upper platform assembly 2, and the leveling driving device is arranged on the chassis frame 10.

Preferably, the rotating shaft assembly comprises a rotating shaft A14 with two ends rotatably connected with the chassis frame 10, and a connecting frame 15 which is arranged on the rotating shaft A14 and connected with the upper platform assembly 2.

Preferably, in order to cooperate with the use of the levelling drive 11, a tilt sensor is provided on the upper platform assembly 2; when the maintenance vehicle operates on the arch rib slope track 100, the inclination angle sensor can detect the included angle between the upper platform assembly 2 and the chassis frame 10 in real time, and the leveling driving device 11 drives the upper platform assembly 2 and the parts above to rotate for a certain angle along the rotating shaft assembly as the axis, so that the frame is always kept in a horizontal state, and the operation safety of maintenance personnel is effectively ensured;

preferably, one end of the rotating shaft a14 is rotatably connected to the chassis frame 10 through a self-aligning bearing, and the other end is rotatably connected to the chassis frame 10 through a cylindrical roller bearing. This makes the rotation shaft a14 in a floating state and has a centering function.

As a preferred embodiment of the driving cart 12, as shown in fig. 10, the driving cart 12 includes a cart driving mechanism 402 having a traveling unit 400 having the same structure as the following cart 13 for driving the traveling unit 400 to move along the longitudinal direction of the rail 100;

the traveling part 400 comprises a guide wheel 4001 connected with the follow-up body and located in a cavity of the rail 100, a bearing wheel 4003 connected with the bottom of the follow-up body and located above the rail 100, and limiting wheels 4002 connected with the follow-up body and located on two sides of the rail 100 in the longitudinal direction.

Preferably, in the present invention, the rail 100 is an H-shaped steel rail, and includes two flange plates and a web plate located between the two flange plates; as shown in fig. 4, 5 and 6, one of the flange plates is located at the bottom of the bearing wheel 4003 for supporting the bearing wheel 4003; the guide wheels 4001 are arranged in two groups and are respectively arranged in two cavities formed by two flange plates and webs, so that the influence of the webs on welding connection plates when the rails 100 are butted is avoided, and the device can safely run along the rails 100; the two groups of limiting wheels 4002 are respectively positioned at two sides of the flange plate close to the bearing wheel 4003, so that the left and right movement along the section of the track 100 in the walking process is limited;

in order to reduce the noise during walking; the bearing wheel 4003, the guide wheel 4001 and the limiting wheel 4002 are made of non-metal materials.

The trolley driving mechanism 402 comprises a chain assembly 401 arranged in a cavity of the rail 100, a chain wheel 4022 engaged with and in transmission connection with the chain assembly 401, and a walking driving device 4021 in transmission connection with the chain wheel 4022; the walking driving device 4021 is connected with the follow-up body.

The chain assembly 401 is arranged in one of the cavities and arranged along the length direction of the cavity; under the driving of the walking driving device 4021, the sprocket 4022 rotates, and since the sprocket 4022 is in transmission connection with the chain assembly 401, when the sprocket 4022 is fixed, the sprocket 4022 moves in the longitudinal direction of the chain assembly 401, thereby realizing the walking of the walking driving device 4021, the box 103, and the chassis frame 10.

The chain assemblies 401 are two groups and are connected through pin shafts, and the walking driving devices 4021 and the chain wheels 4022 are two groups and are arranged in one-to-one correspondence with the chain assemblies 401.

Preferably, the two groups of chain assemblies 401 are located in the same cavity of the rail 100 and are connected by a pin;

in some possible embodiments, to enable the present apparatus to use larger bridge rib slopes; the chain assembly 401 comprises a chain box 4011 which is arranged in a cavity of the rail 100 and arranged along the length direction of the rail 100, and a chain which is arranged in the chain box 4011 and is meshed with a chain wheel 4022; two chains mounted on the same rail 100 are connected by a pin.

As shown in fig. 9 and 12, the chain box 4011 is installed in the cavity through a bolt, the chain box 4011 is provided with an installation groove, an opening of the installation groove faces downward, a chain is installed in the installation groove and fixedly connected with the chain box 4011, the chain wheel 4022 is in meshing transmission with the chain through the opening, and under the condition that the chain is fixed, the chain wheel 4022 realizes walking along the length direction of the chain under the driving of the walking driving device 4021;

the power provided by the walking drive device 4021 acts on different chain assemblies 401 respectively, the resultant force of the reaction moment received by the device is maximized, and the pulling force provided by the device is maximized, so that the device can adapt to the slope of a larger bridge arch rib.

Preferably, the travel driving device 4021 includes a travel driving motor coaxial with and connected to the sprocket 4022, and a speed reducer connected to the travel driving motor.

Further, the leveling driving device 11 may be an electric push rod, a hydraulic cylinder, an air cylinder, a lead screw, or the like; one end of the upper platform assembly is arranged on the chassis frame 10, and the other end of the upper platform assembly is connected with the upper platform assembly 2.

In some possible embodiments, as shown in fig. 1, the upper platform assembly 2 includes a first mounting frame 22 hinged to the traveling mechanism 1, a first main platform 21 mounted between the first mounting frame 22 and the vertical truss assembly 3 and hinged to the vertical truss assembly 3, and a second main platform 23 hinged to a side of the first mounting frame 22 away from the first main platform 21.

Preferably, one end of the leveling driving device 11 is connected to the first mounting frame 22.

The bottom of the first mounting frame 22 is connected with the connecting frame 15, and in the leveling driving device 11, the first mounting frame 22 will realize the rotation around the axis direction of the rotating shaft A14, so that the whole device is kept in a horizontal state.

In some possible embodiments, the first mounting frame 22 is hinged to the first main platform 21 and the second main platform 23 respectively; one end of the main platform I21, which is far away from the mounting frame I22, is hinged with the vertical truss component 3; the bottom of the first main platform 21 is also provided with an inclined strut connected with the vertical truss component 3; the connection of the upper platform assembly 2 to the vertical truss assembly 3 is further strengthened by diagonal bracing.

Preferably, the first main platform 21, the first mounting frame 22 and the second main platform 23 are connected by a pin shaft; the first main platform 21 and the fixed truss are also connected by pin shafts, so that the mounting and dismounting are more convenient;

preferably, two ends of the inclined strut are respectively hinged with the bottom of the first main platform 21 and one side of the vertical truss assembly 3 close to the arch ring to form a support.

In some possible embodiments, as shown in fig. 1, in order to effectively achieve that the upper platform assembly 2 can be horizontal in operation and can be serviced to the wales on the box ribs;

the upper platform assembly 2 further comprises a counterweight arranged on the second main platform 23 and a rail-mounted crane 24 which is in sliding fit with the second main platform 23 and moves close to or far away from the first mounting frame 22 in a linear manner; the rail-mounted crane ship 24 is provided with a first vertical lifting mechanism for driving the rail-mounted crane ship 24 to lift vertically.

The orbital crane 24 described herein may also be a gondola.

Preferably, slide rails are arranged on the side surfaces of the second main platform 23, and the slide rails are arranged along the horizontal direction, so that the track-type crane 24 can move in the transverse direction through a horizontal driving mechanism arranged on the track-type crane 24.

When the cross braces are overhauled, the rail-mounted crane ship 24 is controlled to do linear motion close to or far away from the first installation frame 22 on the second main platform 23, the whole rail-mounted crane ship 24 moves to one side close to the cross braces from the upper side of the corresponding cross braces in motion through the first vertical lifting framework, and the maintenance work can be carried out after the rail-mounted crane ship stops driving after reaching a specified position;

the whole device is in balance through a balance weight, and a track type crane ship 24 which is arranged on the second main platform 23 and slides along the length direction of the second main platform 23 can overhaul the cross brace between the arch rings under the driving of the first vertical lifting mechanism; the sliding direction is the length direction of the cross brace;

in some possible embodiments, as shown in fig. 1 and 2, in order to effectively realize the horizontal sliding rotary truss 4; the device moves vertically, so that the device is further suitable for overhauling box type arch ribs with different gradients and section heights; the vertical truss group 3 comprises a fixed truss 32, a lifting truss 31, a second vertical lifting driving mechanism 33 and an anti-falling device, wherein one side of the fixed truss 32 is hinged with the upper platform component 2 and is vertically arranged, the lifting truss 31 is in sliding fit with the fixed truss 32 and vertically moves linearly along the fixed truss 32, the second vertical lifting driving mechanism 33 drives the lifting truss 31 to vertically move linearly along the fixed truss 32, and the anti-falling device is arranged; the bottom of the lifting truss 31 is connected with the horizontal sliding rotary truss 4.

In some possible embodiments, as shown in fig. 2, in order to avoid the risk of falling of the lifting truss 31 in extreme working conditions, the fall protection device 34 includes three fall protection structures; the three anti-falling structures comprise an anti-falling structure A, an anti-falling structure B and an anti-falling structure C;

the anti-falling structure A comprises a stop block 341 arranged on one side of the lifting truss 31 far away from the horizontal sliding rotary truss 4; the anti-falling structure B comprises a buffer 342 which is arranged at the top of the fixed truss 32 and is matched with the stop 341 for use; the anti-falling structure C comprises a gear C344 rotatably arranged in the fixed truss 32, and a rack C343 meshed with the gear C344 and arranged in the lifting truss 31; the rack C343 is vertically arranged.

Preferably, the buffer 342 is a component with buffering potential energy, and can be a hydraulic buffer;

in the using process, if the lifting truss 31 falls downwards, after the lifting truss 31 falls downwards to one end height, the stopper 341 arranged on the lifting truss 31 is blocked by the buffer 342, so that the lifting truss 31 can not fall downwards any more; this will make, the speed that falls downwards slows down, and the risk that the whole of lifting truss 31 falls appears in effectual reduction through the setting that this will be set up in gear C344 and the meshing of rack C343 on fixed truss 32, avoids appearing the incident.

In some possible embodiments, as shown in fig. 2, in order to guarantee stability during vertical lifting; the second lifting driving mechanism 33 comprises a lifting device and a guiding device arranged on the fixed truss 32.

Preferably, the lifting device can adopt a chain wheel and chain structure, an air cylinder, hydraulic pressure, a screw rod, a winch lifting system 331 and other mechanisms to realize lifting;

in the present invention, preferably, the lifting device is driven by a hoisting system 331; the device comprises a hoisting and lifting system 331 arranged on the outer side of a fixed truss 32, a pulley block A332 arranged on a lifting truss 31, a steel rope in transmission connection with the hoisting and lifting system 331 and the pulley block A332, and a fixed pulley connected with the other end of the steel rope; the preferable hoisting system 331 and the fixed wheel are located on the symmetrical side surfaces of the lifting truss 31, one end of the steel rope is connected with the output end of the hoisting system 331, and the other end of the steel rope is sleeved on the outer side of the pulley block A332 and is connected with the fixed wheel. The coil lifting adopts a double independent braking system, namely, the motor is braked in a power-off mode and the contracting brake is braked, so that the reliable braking can be fully ensured;

when the height and the gradient of the section of the arch ring of the fixed truss 32 change, the hoisting system 331 drives the steel rope pulley block A332 to realize the lifting movement of the lifting truss 31 under the combined action of the guide device, so that the lower horizontal truss 41 is always close to the bottom surface of the arch ring, and the inspection and maintenance of the bottom surface of the arch ring are realized;

when the horizontal sliding rotary truss 4 rotates to the outer side of the arch ring, the outer side of the arch ring can be inspected and maintained through the lifting movement of the lifting truss 31;

preferably, the fixed wheels are at the same height as the winch lift system 331.

The guiding device is mainly used for limiting the movement direction of the lifting truss 31 so as to enable the lifting truss to do linear movement in the ascending or descending process;

preferably, the guiding device comprises a pulley block B arranged on the fixed truss 32 and a plurality of groups of guide rails arranged outside the lifting truss 31 along the vertical direction; the pulley block B is matched with a plurality of groups of guide rails, so that the movement direction of the lifting truss 31 is effectively limited;

preferably, as shown in fig. 2, when the lifting truss 31 and the fixed truss 32 are of a square column structure, the arrangement of the guide rails can be cancelled, and at this time, the pulley block B is located at a corner of the fixed truss 32 and is matched with a corner of the lifting truss 31; naturally, the side surface of the lifting truss 31 is also provided with a guide rail and a pulley block B structure matched with the guide rail;

the guiding device can also be realized by adopting a guide post vertically arranged on the lifting truss 31 and a guide sleeve arranged on the fixed truss 32 and sleeved with the guide post.

In some possible embodiments, as shown in fig. 1-3, in order to effectively realize the horizontal sliding rotary truss 4 to realize the horizontal rotation and sliding compound movement, the maintenance of different positions at the bottom of the arch ring and the maintenance of the side of the arch ring are realized; the horizontal sliding rotary truss 4 comprises a horizontal truss 41, a rotary driving mechanism 42 connected with the fixed truss 32, sliding hangers respectively connected with the rotary driving mechanism 42 and the horizontal truss 41, and a horizontal sliding mechanism 43 for controlling the horizontal truss 41 to do linear motion in the horizontal direction. The sliding hanging bracket is connected with the horizontal truss in a sliding way.

The rotation driving mechanism 42 is mainly used for controlling the horizontal truss 41 to rotate in the horizontal direction, and if the rotation driving mechanism is realized by adopting a rotation supporting and rotating structure, the rotation driving mechanism comprises an inner ring connected with the lifting truss 31, an outer ring connected with the horizontal truss 41 and coaxially arranged with the inner ring, and a rotation driving motor matched with the outer ring and used and installed on the lifting truss 31, wherein the outer ring is in a toothed structure and matched with a driving gear of the rotation driving motor to realize rotation driving, and the outer ring and the inner ring are coaxially arranged.

The bottom of the box-type arch rib is provided with a plurality of stay cables and mesh cables, in order to overhaul the bottom of the arch ring, the horizontal truss 41 needs to pass through the stay cables and the mesh cables to reach an overhaul position, and the horizontal sliding mechanism 43 is matched with the rotary driving mechanism 42 only for controlling the horizontal movement of the horizontal truss 41, so that the angle change and the horizontal movement in the horizontal direction can be realized; thereby effectively avoiding the stay cable and the reticular stay cable; through still realizing the maintenance to the arch ring side, when the maintenance to the arch ring side, horizontal truss 41 moves the side of arch ring as a whole, then through rotary mechanism's rotation to and the control of lifting height can realize the maintenance to the arch ring side.

Preferably, the horizontal sliding mechanism 43 may be set by using a lead screw principle, that is, a lead screw is arranged on the sliding hanger and connected with the horizontal truss 41 through the lead screw, and the horizontal truss 41 is driven by a lead screw driving motor to move in the horizontal direction;

the horizontal truss can also be realized by adopting a chain wheel and chain combination, namely, the chain wheel is arranged on the sliding hanger through a rotating shaft, the chain is in transmission connection with the chain wheel, and the horizontal truss 41 is driven to move in the horizontal direction by a chain wheel driving motor through the connection of the chain and the horizontal truss 41;

as the best embodiment of the horizontal sliding mechanism 43, the bottom of the lifting truss 31 is provided with an upper rotary connecting seat connected with the inner ring, and the outer ring is connected with the sliding hanger through a lower rotary connecting seat;

the horizontal sliding mechanism 43 comprises a sliding driving motor which is provided with a sliding gear and is installed on the lower rotary connecting seat, a sliding rack which is meshed with the sliding gear and is horizontally arranged along the length direction of the horizontal truss 41, an external guide groove which is arranged at the outer side of the sliding hanger and is horizontally arranged along the length direction of the horizontal truss 41, and a pulley block C which is matched with the external guide groove for use; the sliding rack is arranged on the sliding hanger;

the output shaft of the slippage driving motor is provided with a slippage gear which is driven to rotate so as to enable the horizontal truss 41 to move along the length direction of the rack, thereby realizing the movement in the horizontal direction; the external guide groove is matched with the pulley block C to effectively realize guiding.

Preferably, for preventing that horizontal truss 41 from falling, still be provided with the L template on the connecting seat of gyration down, the one end and the lower connecting seat of gyration of L template are connected, and in one end stretched into outside guide slot in addition, under normal use, the L template does not have the contact relation with outside guide slot, and only when horizontal truss 41 falls downwards the L template just can contact with the medial surface of outside guide slot, as supporting, the prevention falls.

Preferably, a sliding limit stop is arranged at the top of the horizontal truss 41, and a sliding limit sensor used in cooperation with the sliding limit stop is arranged on the sliding hanger to prevent the horizontal truss 41 from sliding out of the sliding hanger.

In some possible embodiments, as shown in fig. 1, in order to guarantee the stability of the horizontal girders 41 during the maintenance work; the horizontal sliding rotary truss 4 further comprises an electromagnetic absorption device 44 arranged at the end part of the horizontal truss 41 close to one side of the bottom of the arch ring.

The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.

Claims (10)

1. An arch rib maintenance vehicle suitable for box-type arch rib inspection is characterized by comprising a travelling mechanism, upper platform assemblies, vertical truss assemblies and horizontal sliding rotary trusses, wherein the upper platform assemblies are mounted on the travelling mechanism and are mutually hinged, the vertical truss assemblies are hinged with one ends of the upper platform assemblies, and the horizontal sliding rotary trusses are connected with the bottoms of the vertical truss assemblies and are in rotary fit with the bottoms of the vertical truss assemblies; the horizontal sliding rotary truss and the vertical truss component are mutually vertical and move along the horizontal direction; and a leveling device is arranged on the travelling mechanism.

2. A rib inspection vehicle suitable for inspection of box type ribs according to claim 1 wherein said running mechanism comprises a chassis frame connected to the upper platform assembly, a running carriage mounted on the chassis frame, and a track cooperating with the running carriage, said track being mounted on the upper surface of the rib in the box type rib and disposed along the slope of the rib.

3. The vehicle for inspecting ribs of box-type for inspecting ribs as claimed in claim 2, wherein said leveling device comprises a rotating shaft assembly rotatably mounted on the chassis frame at both ends and connected to the upper platform assembly, and a leveling driving device mounted on the chassis frame.

4. A rib inspection vehicle suitable for inspection of box type ribs according to claim 1 wherein said upper platform assembly includes a first mounting frame hinged to the travelling mechanism, a first main platform mounted between the first mounting frame and the vertical truss assembly and hinged to the vertical truss assembly, and a second main platform hinged to a side of the first mounting frame remote from the first main platform.

5. The vehicle for inspecting ribs of box type ribs according to claim 4, wherein said upper platform assembly further comprises a counterweight mounted on the second main platform, and an orbital crane in sliding engagement with the second main platform and moving linearly toward or away from the mounting frame; the track type crane ship is provided with a first vertical lifting mechanism for driving the track type crane ship to lift vertically.

6. The arch rib maintenance vehicle suitable for box type arch rib inspection according to claim 1, wherein the vertical truss assembly comprises a fixed truss, a lifting truss, a second vertical lifting driving mechanism and a fall-preventing device, wherein one side of the fixed truss is hinged with the upper platform assembly and is vertically arranged, the second vertical lifting driving mechanism is matched with the fixed truss and linearly moves along the vertical direction of the fixed truss, the second vertical lifting driving mechanism drives the lifting truss to linearly move along the vertical direction of the fixed truss, and the fall-preventing device is arranged; the bottom of the lifting truss is connected with the horizontal sliding rotary truss.

7. A rib inspection vehicle suitable for inspection of box type ribs according to claim 6 wherein said fall arrest device comprises fall arrest structure A, fall arrest structure B, fall arrest structure C;

the anti-falling structure A comprises a stop block arranged on one side of the lifting truss far away from the horizontal sliding rotary truss;

the anti-falling structure B comprises a buffer which is arranged at the top of the fixed truss and is matched with the stop block for use;

the anti-falling structure C comprises a gear C which is rotatably arranged in the fixed truss and a rack C which is meshed with the gear C and is arranged in the lifting truss; the rack C is vertically arranged.

8. A rib inspection vehicle adapted for inspection of box type ribs according to claim 6 wherein said second lifting drive means comprises a lifting device, a guide means mounted on a fixed truss.

9. A rib inspection vehicle suitable for box-type rib inspection according to claim 6, wherein said horizontal sliding rotary truss comprises a horizontal truss, a rotary driving mechanism connected with the fixed truss, sliding hangers respectively connected with the rotary driving mechanism and the horizontal truss, and a horizontal sliding mechanism for controlling the horizontal truss to move linearly in the horizontal direction.

10. A rib inspection vehicle adapted for inspection of box type ribs according to claim 9 wherein said horizontally sliding slewing truss further includes electromagnetic absorbing means disposed at the end of the horizontal truss on the side adjacent to the bottom of the arch ring.

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