CN113202020B - Arch rib maintenance vehicle suitable for inspection of box arch rib - Google Patents
Arch rib maintenance vehicle suitable for inspection of box arch rib Download PDFInfo
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- CN113202020B CN113202020B CN202110598655.3A CN202110598655A CN113202020B CN 113202020 B CN113202020 B CN 113202020B CN 202110598655 A CN202110598655 A CN 202110598655A CN 113202020 B CN113202020 B CN 113202020B
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- 238000012423 maintenance Methods 0.000 title claims abstract description 24
- 238000007689 inspection Methods 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 230000033001 locomotion Effects 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 14
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/106—Movable inspection or maintenance platforms, e.g. travelling scaffolding or vehicles specially designed to provide access to the undersides of bridges
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- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of box-type arch rib overhaul, and particularly discloses an arch rib overhaul vehicle suitable for box-type arch rib inspection, which comprises a travelling mechanism, an upper platform assembly, a vertical truss assembly and a horizontal sliding rotary truss, wherein the upper platform assembly is arranged on the travelling mechanism and hinged with each other, the vertical truss assembly is hinged with one end of the upper platform assembly, and the horizontal sliding rotary truss is connected with the bottom of the vertical truss assembly and is in rotary fit with the bottom of the vertical truss assembly; the horizontal sliding rotary truss and the vertical truss assembly are mutually perpendicular and move along the horizontal direction; and a leveling device is arranged on the travelling mechanism. The invention can effectively realize the overhaul of the upper surface, the outer side surface, the bottom surface and the cross braces of the arch ring; can avoid the obstacle according to the maintenance need.
Description
Technical Field
The invention relates to the technical field of arch rib overhaul of a box structure, in particular to an arch rib overhaul vehicle suitable for checking the box arch rib.
Background
Along with the development of bridge technology, the construction of continuous multi-span lower-bearing type tie-bar complex arch bridges such as river crossing, river crossing and the like is gradually increased. The bottom of the steel beam can be maintained through mature suspended beam bottom inspection, but the cover inspection of the outer surfaces of the arch rings, the suspender anchor heads, the arch rib connecting surfaces between the arch rings at two sides, the inner side surfaces of the arch rings, the wind brace and the like above the bridge floor is difficult.
The main structural form of the maintenance vehicle for the maintenance of the arch rib of the box-type structure at present is a combined structural form of a walking chassis, a suspension arm, a hanging basket and the like.
The inspection vehicle can inspect the upper surface, the outer side surface, the bottom surface and the arch rib connecting bottom surface of the arch ring by moving along the bridge to the track and lifting the hanging basket, but the following defects exist:
1. in the operation process of the hanging basket, the hanging basket is large in shaking and low in wind resistance, and has large potential safety hazards;
2. The inner side surface of the arch ring, the wind brace and other outer surfaces are difficult to cover and check;
3. For a multi-span arch bridge, the maintenance vehicle is arranged on each arch, and the overall cost is high;
4. the disassembly and assembly are inconvenient, the maintenance vehicle is exposed to the external field for a long time and is easy to damage, and the maintenance cost of the maintenance vehicle is high;
5. meanwhile, when the arch rib maintenance vehicle is not used, the arch rib maintenance vehicle is placed on the arch ring of the bridge, and the overall appearance 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 checking a box-type arch rib, 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 invention solves the technical problems by adopting the following solution:
the arch rib maintenance vehicle comprises a travelling mechanism, an upper platform assembly, a vertical truss assembly and a horizontal sliding rotary truss, wherein the upper platform assembly is arranged on the travelling mechanism and hinged with the travelling mechanism; the horizontal sliding rotary truss and the vertical truss assembly are mutually perpendicular and slide along the horizontal direction; and a leveling device is arranged on the travelling mechanism.
When the arc ring is in operation, the travelling mechanism can be suitable for the change of the outer side surface of the arc ring and moves along the gradient, the horizontal sliding rotary truss can reach a designated position through the vertical movement of the vertical truss assembly, then the barrier at the bottom of the arc ring is effectively avoided through the combined movement of rotation and sliding in the horizontal direction, and the overhauling of overhaulers on the bottom and the side surface of the arc ring is realized; the overhaul of the box-type arch ribs with different arch ring section heights and gradients is effectively realized through vertical lifting; the application range is wider. The leveling device ensures that the main body 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 component 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 achieve a movement of the running gear in the direction of the slope of the arch ring; the travelling mechanism comprises a chassis frame connected with the upper platform assembly, a travelling driving trolley arranged on the chassis frame and a track matched with the travelling driving trolley, wherein the track is arranged on the upper surface of the arch ring in the box-shaped 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 with two ends rotatably arranged on the chassis frame and connected with the upper platform assembly, and a leveling driving device arranged on the chassis frame.
In some possible embodiments, the 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.
In some possible embodiments, to effectively achieve that the upper platform assembly can be horizontal during operation and can be serviced against the cross braces on the box rib; the upper platform assembly also comprises a counterweight arranged on the second main platform and a rail-type hanging boat which is in sliding fit with the second main platform and moves in a straight line close to or far from the first mounting frame; the rail-mounted crane is characterized in that a first vertical lifting mechanism for driving the rail-mounted crane to vertically lift is arranged on the rail-mounted crane.
In some possible embodiments, to effectively achieve a horizontal slip swing truss; the vertical movement is further suitable for overhauling box-shaped arch ribs with different slopes 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 arranged vertically, the lifting truss is in sliding fit with the fixed truss and moves linearly along the vertical direction of the fixed truss, and the vertical lifting driving mechanism II drives the lifting truss to move linearly along the vertical direction of the fixed truss; 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, which is 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 rotatably arranged in the fixed truss and a rack C meshed with the gear C and arranged in the lifting truss; the rack C is vertically arranged.
In some possible embodiments, to ensure stability during vertical lift; the lifting driving mechanism II 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 overhaul work for different positions of the bottom of the arch ring and the overhaul work for 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 hanger connected with the rotary driving mechanism and the horizontal truss respectively, and a horizontal sliding mechanism for controlling the horizontal truss to do linear motion in the horizontal direction.
In some possible embodiments, to ensure stability of the horizontal truss during maintenance work; the horizontal sliding rotary truss further comprises an electromagnetic suction fixing device arranged at the end part of the horizontal truss, which is 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 overhaul the lateral surface, the upper surface, the bottom surface and the cross braces among the arch rings;
the invention can effectively avoid the barrier at the lower part of the arch ring through the rotary driving mechanism in the use process, thereby effectively improving the situation that the overhaul process cannot avoid the barrier and further leads to the failure of overhaul;
the fixed truss, the lifting truss and the lifting driving mechanism II are arranged, so that the integral shaking in the lifting process can be reduced, and the safety of operation is improved;
All the connecting parts are connected through the pin shafts, so that the device is convenient to install and detach, and the maintenance cost of the device is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a vertical truss assembly according to the present invention;
FIG. 3 is a schematic view of the structure of a horizontally smoothed back transfer truss of the present invention;
FIG. 4 is a schematic view of the structure of the walking mechanism of the present invention;
FIG. 5 is a view showing the working state of the invention when overhauling the outer side surface of the arch ring;
FIG. 6 is a view of the invention in operation during servicing of the bottom of the arch ring;
FIG. 7 is a view showing the working state of the invention when overhauling a cross brace;
FIG. 8 is a schematic plan view of the structure of FIG. 4;
FIG. 9 is a cross-sectional view of 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 the structure C-C of FIG. 8;
FIG. 12 is a schematic cross-sectional view of D-D in FIG. 8;
Wherein: 1. a walking mechanism; 10. a chassis frame; 11. leveling driving device; 12. driving a trolley; 13. a follower trolley; 14. a rotating shaft A; 15. a connecting frame; 103. a case; 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. track type hanging boat; 3. a vertical truss assembly; 31. lifting trusses; 32. fixing the truss; 33. a lifting driving mechanism II; 331. a hoisting system; 332. pulley block A; 34. a fall protection device; 341. a stop block; 342. a buffer; 343. a rack C; 344. a gear C; 4. horizontal sliding rotary truss; 41. a horizontal truss; 42. a rotary driving mechanism; 43. a horizontal slip mechanism; 44. an electromagnetic suction device; 400. a walking unit; 401. a chain assembly; 402. a trolley driving mechanism; 4001. a guide wheel; 4002. a limiting wheel; 4003. a bearing wheel; 4011. a chain box; 402. a trolley driving mechanism; 4021. a walking driving device; 4022. a sprocket; 6.a slewing bearing; 7. a sliding bearing; 8. a distance sleeve; 100. a track.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention. Accordingly, the detailed description of the embodiments of the 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 should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the 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 drawings only for the convenience of simplifying the description of the drawings and reducing the number of the drawings, and not to indicate or imply that the embodiments described with reference to the drawings contain all the technical features in the drawings, and thus should not be construed as limiting the invention.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Reference to "first," "second," and similar terms herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, 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 the association relationship of the association object, which means that there may be three relationships, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more. For example, a plurality of positioning posts refers to two or more positioning posts. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The present invention will be described in detail below.
As shown in figures 1-12 of the drawings,
The arch rib maintenance vehicle suitable for checking the box-type arch ribs 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 hinged with each other, 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 assembly 3 are mutually perpendicular and slide along the horizontal direction; a leveling device is arranged on the travelling mechanism 1.
During operation, the travelling mechanism 1 can adapt to the change of the outer side surface of the arch ring, and moves along the gradient, the horizontal sliding rotary truss 4 can reach a designated position through the movement of the vertical truss assembly 3 in the vertical direction, then the barrier at the bottom of the arch ring is effectively avoided through the combined movement of rotation and sliding in the horizontal direction, and the overhauling of overhaulers on the bottom and the side surface of the arch ring is realized; the overhaul of the box-type arch ribs with different arch ring section heights and gradients is effectively realized through vertical lifting; the application range is wider.
The combined rotation and sliding motion can be performed firstly and then sliding; in order to make the work efficiency higher, synchronous sliding is adopted when rotating.
In some possible embodiments, as shown in fig. 5, in order to effectively achieve a movement of running gear 1 in the direction of the arch slope; the travelling mechanism 1 comprises a chassis frame 10 connected with the upper platform assembly 2, a travelling driving trolley arranged on the chassis frame 10 and a track 100 matched with the travelling driving trolley, wherein the track 100 is arranged 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 driving trolley is mainly used for walking along the outer side of the arch ring under the cooperation of the walking driving trolley and the track 100, so that overhaulers can overhaul the side surface of the arch ring, the bottom of the arch ring and different cross braces.
Preferably, as shown in fig. 5-7, the track 100 is provided in two sets mounted on the top surface of the arch ring; when the rails 100 are two groups, the walking driving trolley comprises a driving trolley 12 and a follow-up trolley 13 which are respectively matched with the two groups of rails 100; the follower trolley 13 will simultaneously travel along the track 100 as the trolley 12 is driven. The driving trolley 12 and the follower trolley 13 are respectively mounted 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 that the center distance between the driving trolley 12 and the box body 3 is effectively adjusted, and an included angle formed between the driving trolley and the box body 3 in the travelling direction in the travelling process is avoided; the box body 3 comprises a follow-up body arranged along the length direction of the arch ring and a sliding bearing 7 rotatably arranged at the top of the follow-up body, the axis of the sliding bearing 7 is mutually perpendicular 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 on the outer side of 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 boxes 3 through four slewing bearings 106, so that in order to enable the traveling driving trolley and the boxes 3 to form an included angle in the traveling direction in the traveling process, one set of sliding bearings 7 is sleeved with a distance sleeve 8 with the length equal to that of the sliding bearings 7, and the other three sets of sliding bearings 7 are sleeved with distance sleeves 8 with the length smaller than that of the sliding bearings 7; the arrangement enables the included angle formed by the walking driving trolley and the box body 3 in the walking direction in the walking process to be effectively adjusted.
The distance sleeve 8 is sleeved on the outer side of the sliding bearing 7 and is 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 of the small-range winding bearing 7 axis through the distance sleeve 8, so as to be matched with the gradient.
Meanwhile, the chassis frame 1 and the box body 3 are connected through the slewing bearing 6, so that the chassis frame can freely rotate, and the device is suitable for the installation dimensional errors of the track 100 in the straight line and the width direction on the arch rib plane, so that the device is suitable for the dimensional errors of the track 100 in the straight line direction and the width direction in a wider range 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 with two ends rotatably arranged on the chassis frame 10 and connected with the upper platform assembly 2, and a leveling driving device 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 mounted on the rotating shaft A14 and connected with the upper platform assembly 2.
Preferably, for cooperating with the leveling driving means 11, an inclination sensor is provided on the upper platform assembly 2; when the maintenance vehicle works on the arch rib gradient 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 upper platform assembly 2 and the components above are driven to rotate by a certain angle along the rotating shaft assembly by the driving of the leveling driving device 11, so that the frame is always kept in a horizontal state, and the working safety of maintenance personnel is effectively ensured;
preferably, one end of the rotating shaft A14 is rotatably connected with the chassis frame 10 through a self-aligning bearing, and the other end is rotatably connected with 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 traveling part 400 having the same structure as the follower cart 13, and a cart driving mechanism 402 for driving the traveling part 400 to move in the longitudinal direction of the track 100;
the walking part 400 comprises a guide wheel 4001 connected with the follow-up body and positioned in the cavity of the track 100, a bearing wheel 4003 connected with the bottom of the follow-up body and positioned above the track 100, and limit wheels 4002 connected with the follow-up body and positioned on two sides of the track 100 in the length direction.
Preferably, in the present invention, the track 100 is an H-steel track, including 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 to support the bearing wheel 4003; the two groups of guide wheels 4001 are respectively arranged in two cavities formed by the two flange plates and the web plate, so that the arrangement is not influenced by the addition of a welding connecting plate to the web plate when the track 100 is in butt joint, and the device can safely run along the track 100; the limiting wheels 4002 are respectively positioned at two sides of the flange plate close to the bearing wheels 4003, so as to limit the left and right movement along the section of the track 100 in the walking process;
In order to reduce noise during walking; the bearing wheel 4003, the guide wheel 4001 and the limit wheel 4002 are made of nonmetallic materials.
The trolley driving mechanism 402 comprises a chain assembly 401 arranged in a cavity of the track 100, a chain wheel 4022 meshed with the chain assembly 401 and in transmission connection with the chain assembly 401, and a traveling 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 is arranged along the length direction of the cavity; under the drive of the traveling driving device 4021, the sprocket 4022 rotates, and because the sprocket 4022 is in transmission connection with the chain assembly 401, the sprocket 4022 moves along the length direction of the chain assembly 401 under the condition that the sprocket 4022 assembly is fixed, so that traveling of the traveling driving device 4021, the box 103 and the chassis frame 10 is realized.
The two sets of chain components 401 are connected through pin shafts, and the two sets of traveling driving devices 4021 and the two sets of chain wheels 4022 are arranged in one-to-one correspondence with the chain components 401.
Preferably, the two sets of chain assemblies 401 are located in the same cavity of the track 100 and are connected by a pin shaft;
In some possible embodiments, to enable the present device to use a larger gradient of bridge ribs; the chain assembly 401 comprises a chain box 4011 which is installed in a cavity of the track 100 and is arranged along the length direction of the track 100, and a chain which is installed in the chain box 4011 and is meshed with a chain wheel 4022; two chains mounted on the same track 100 are connected by a pin.
As shown in fig. 9 and 12, a chain box 4011 is mounted in a cavity through a bolt, the chain box 4011 is provided with a mounting groove, an opening of the mounting groove is downward, a chain is mounted in the mounting groove and fixedly connected with the chain box 4011, a chain wheel 4022 is meshed with the chain through the opening for transmission, and under the condition that the chain is fixed, the chain wheel 4022 is driven by a traveling driving device 4021 to travel along the length direction of the chain;
the power provided by the running drive device 4021 acts on different chain assemblies 401 respectively, and the resultant force of counter moment applied by the device is maximized at the moment, so that the pulling force provided by the device is maximized, and the device can adapt to larger bridge arch rib gradient.
Preferably, the traveling driving device 4021 includes a traveling driving motor coaxially and continuously connected to the sprocket 4022, and a speed reducer connected to the traveling driving motor.
Further, the leveling driving device 11 may be an electric push rod, a hydraulic cylinder, an air cylinder, a screw rod or the like; one end of which is mounted on the chassis frame 10 and the other end of which is connected to 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 travelling 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 drive 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 the leveling driving device 11 is used for enabling the first mounting frame 22 to rotate 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 first main platform 21, which is far away from the first mounting frame 22, is hinged with the vertical truss assembly 3; the bottom of the first main platform 21 is also provided with a diagonal brace connected with the vertical truss assembly 3; the connection of the upper platform assembly 2 to the vertical truss assembly 3 is further reinforced by diagonal bracing.
Preferably, the first main platform 21, the first mounting frame 22 and the second main platform 23 are connected by adopting pin shafts; the first main platform 21 is also connected with the fixed truss by adopting a pin shaft, so that the mounting and dismounting are more convenient;
Preferably, two ends of the diagonal brace are hinged with the bottom of the first main platform 21 and one side, close to the arch ring, of the vertical truss assembly 3 respectively to form a support.
In some possible embodiments, as shown in fig. 1, to effectively achieve that the upper platform assembly 2 can be horizontal in operation and can be serviced to the crossbars on the box arch;
the upper platform assembly 2 further comprises a counterweight arranged on the second main platform 23 and a rail-type crane 24 which is in sliding fit with the second main platform 23 and moves linearly close to or far from the first mounting frame 22; the rail-mounted crane 24 is provided with a first vertical lifting mechanism for driving the rail-mounted crane 24 to vertically lift.
The track hoist 24 described herein may also be a gondola.
Preferably, a sliding rail is arranged on the side surface of the second main platform 23, and the sliding rail is arranged along the horizontal direction, so that the rail-type crane 24 can move transversely through a horizontal driving mechanism arranged on the rail-type crane 24.
When the transverse support is overhauled, the rail-type crane 24 is controlled to do linear motion close to or far from the first installation frame 22 on the second main platform 23, the whole rail-type crane 24 is enabled to move to the side close to the transverse support through the first vertical lifting framework from the upper part of the corresponding transverse support, and after the specified position is reached, the driving is stopped, so that overhauling can be carried out;
The whole device is balanced through the counterweight, and the rail type crane 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 braces between the arch rings under the drive of the first vertical lifting mechanism; the sliding direction is the long direction of the cross brace;
In some possible embodiments, as shown in fig. 1 and 2, in order to effectively realize the horizontal sliding swing truss 4; the vertical movement is further suitable for overhauling box-shaped arch ribs with different slopes 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 a falling prevention device, wherein one side of the fixed truss 32 is hinged with the upper platform assembly 2 and is vertically arranged, the lifting truss 31 is in sliding fit with the fixed truss 32 and moves along the fixed truss 32 vertically in a linear manner, and the second vertical lifting driving mechanism is used for driving the lifting truss 31 to move along the fixed truss 32 vertically in a linear manner; 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, to avoid the potential for falling of lifting truss 31 during extreme conditions, such as the occurrence of a three-way fall protection mechanism, fall protection device 34 includes; 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 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 block 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 member having buffering potential energy, and may be a hydraulic buffer;
In the use process, if the lifting truss 31 falls downwards, after the lifting truss 31 falls downwards to a certain height, the stop block 341 installed on the lifting truss 31 will be blocked by the buffer 342, so that the lifting truss 31 can not fall downwards any more; the engagement of the gear C344 and the rack C343 provided on the fixed truss 32 will slow down the falling speed, and through the above arrangement, the risk of falling the lifting truss 31 as a whole is effectively reduced, and the safety accident is avoided.
In some possible embodiments, as shown in fig. 2, to ensure stability during vertical lifting; the second lifting driving mechanism 33 includes a lifting device and a guiding device mounted on the fixed truss 32.
Preferably, the lifting device can adopt a chain wheel and chain structure, a 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 winch lifting system 331; the device comprises a winch 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 winch lifting system 331 and the pulley block A332, and a fixed wheel connected with the other end of the steel rope; the preferred hoist lifting system 331 and the fixed wheels are located on symmetrical sides of the lifting truss 31, one end of the steel rope is connected with the output end of the hoist lifting system 331, and the other end is sleeved on the outer side of the pulley block A332 and connected with the fixed wheels. The dual independent braking system, namely motor power-off braking and band-type brake braking, is adopted for coil lifting, so that the braking reliability can be fully ensured;
When the height and the gradient of the arch ring section of the fixed truss 32 are changed, the winch lifting system 331 drives the steel rope pulley block A332 to realize 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 bottom surface of the arch ring is inspected and maintained;
when the horizontal sliding rotary truss 4 rotates to the outer side of the arch ring, the outer side surface of the arch ring can be inspected and maintained through the lifting movement of the lifting truss 31;
Preferably, the stator is at the same height as the hoist hoisting 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 which are arranged on the outer side of 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 in a square column structure, the arrangement of the guide rail can be omitted, and the pulley block B is positioned at the corner of the fixed truss 32 and is matched with the corner of the lifting truss 31; of course, the side surface of the lifting truss 31 is provided with a guide rail and a pulley block B structure matched with the guide rail;
the guiding device can also be realized by a guiding column vertically arranged on the lifting truss 31 and a guiding sleeve arranged on the fixed truss 32 and sleeved with the guiding column.
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 overhaul of different positions of the bottom of the arch ring and the overhaul work of the side surface of the arch ring are realized; the horizontal sliding rotary truss 4 includes a horizontal truss 41, a rotation driving mechanism 42 connected to the fixed truss 32, a sliding hanger connected to the rotation driving mechanism 42 and the horizontal truss 41, respectively, and a horizontal sliding mechanism 43 for controlling the horizontal truss 41 to perform a linear motion in a horizontal direction. The sliding hanger 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, for example, a rotation supporting and rotating structure is adopted to realize the rotation driving, and 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 installed on the lifting truss 31, wherein the outer ring is of a toothed structure and matched with a driving gear of the rotation driving motor to realize the rotation driving, and the outer ring and the inner ring are coaxially arranged.
The bottom of the box arch rib is provided with more stay cables and net-shaped cables, so that the horizontal truss 41 can reach an overhaul position only by penetrating the stay cables and the net-shaped cables in order to overhaul the bottom of the arch ring, and the horizontal sliding mechanism 43 is only used for controlling the horizontal truss 41 to move in the horizontal direction and can realize the angle change in the horizontal direction and the horizontal position movement by being matched with the rotary driving mechanism 42; thereby effectively avoiding the stay ropes and the reticular stay ropes; by also enabling the inspection of the side face of the arch ring, during the inspection of the side face of the arch ring, the horizontal truss 41 is moved integrally to the side face of the arch ring, and then the inspection of the side face of the arch ring can be achieved by the rotation of the rotation mechanism and the control of the lifting height.
Preferably, the horizontal sliding mechanism 43 can be arranged by adopting a screw principle, namely a screw is arranged on the sliding hanger and is connected with the horizontal truss 41 through the screw, and the horizontal truss 41 is driven by a screw driving motor to move in the horizontal direction;
The chain wheel and chain combination can be adopted, namely, a 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 by a chain wheel driving motor to move in the horizontal direction through the connection of the chain and the horizontal truss 41;
As the best mode of the horizontal sliding mechanism 43, the bottom of the lifting truss 31 is provided with an upper rotary connecting seat connected with an inner ring, and an outer ring is connected with a sliding hanger through a lower rotary connecting seat;
The horizontal sliding mechanism 43 comprises a sliding driving motor provided with a sliding gear and installed on the lower rotary connecting seat, a sliding rack meshed with the sliding gear and horizontally arranged along the length direction of the horizontal truss 41, an external guide groove arranged outside the sliding hanger and horizontally arranged along the length direction of the horizontal truss 41, and a pulley block C matched with the external guide groove; the sliding rack is arranged on the sliding hanger;
The output shaft of the sliding driving motor is provided with a sliding gear, and the sliding gear 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, in order to prevent the horizontal truss 41 from falling, an L-shaped plate is further disposed on the lower swivel connection base, one end of the L-shaped plate is connected with the lower swivel connection base, and the other end extends into the outer guide groove, so that the L-shaped plate has no contact relationship with the outer guide groove in normal use, and only when the horizontal truss 41 falls down, the L-shaped plate contacts with the inner side surface of the outer guide groove to serve as a support to prevent falling.
Preferably, a sliding limit stop is arranged at the top of the horizontal truss 41, and a sliding limit sensor matched 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, to ensure stability of the horizontal truss 41 during maintenance operations; the horizontal sliding rotary truss 4 further comprises an electromagnetic suction 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 specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (3)
1. The arch rib maintenance vehicle is characterized by comprising a travelling mechanism, an upper platform assembly, a vertical truss assembly and a horizontal sliding rotary truss, wherein the upper platform assembly is arranged on the travelling mechanism and hinged with the travelling mechanism; the horizontal sliding rotary truss and the vertical truss assembly are mutually perpendicular and move along the horizontal direction; a leveling device is arranged on the travelling mechanism; the travelling mechanism comprises a chassis frame connected with the upper platform assembly, a travelling driving trolley arranged on the chassis frame and a track matched with the travelling driving trolley for use, wherein the track is arranged on the upper surface of the arch ring in the box-shaped arch rib and is arranged along the gradient of the arch ring; the leveling device comprises a rotating shaft assembly with two ends rotatably arranged on the chassis frame and connected with the upper platform assembly, and a leveling driving device arranged on the chassis frame; the upper platform assembly comprises a first installation frame hinged with the travelling mechanism, a first main platform installed between the first installation frame and the vertical truss assembly and hinged with the vertical truss assembly, and a second main platform hinged with one side, far away from the first main platform, of the first installation frame; the upper platform assembly also comprises a counterweight arranged on the second main platform and a rail-type hanging boat which is in sliding fit with the second main platform and moves linearly close to or far from the first mounting frame; the rail type crane is provided with a first vertical lifting mechanism for driving the rail type crane to vertically lift; 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 matched with the fixed truss and moves linearly along the vertical direction of the fixed truss, and the vertical lifting driving mechanism II drives the lifting truss to move linearly along the vertical direction of the fixed truss; the bottom of the lifting truss is connected with the horizontal sliding rotary truss; 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, which is 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 rotatably arranged in the fixed truss and a rack C meshed with the gear C and arranged in the lifting truss; the rack C is vertically arranged; the horizontal sliding rotary truss comprises a horizontal truss, a rotary driving mechanism connected with the fixed truss, a sliding hanger connected with the rotary driving mechanism and the horizontal truss respectively, and a horizontal sliding mechanism for controlling the horizontal truss to do linear motion in the horizontal direction.
2. A rib inspection vehicle adapted for inspection of box ribs as in claim 1 wherein said second lift drive mechanism includes a lift means, a guide means mounted on a fixed truss.
3. A rib inspection vehicle adapted for inspection of box ribs as in claim 1, wherein said horizontal slip swing truss further comprises electromagnetic attraction means disposed at the end of the horizontal truss adjacent the bottom of the arch.
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| CN202110598655.3A CN113202020B (en) | 2021-05-31 | 2021-05-31 | Arch rib maintenance vehicle suitable for inspection of box arch rib |
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| CN202110598655.3A CN113202020B (en) | 2021-05-31 | 2021-05-31 | Arch rib maintenance vehicle suitable for inspection of box arch rib |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113430929A (en) * | 2021-08-04 | 2021-09-24 | 中交二公局第五工程有限公司 | Self-propelled beam bottom working trolley at central separation zone of bridge |
| CN114438878A (en) * | 2021-12-27 | 2022-05-06 | 上海市政养护管理有限公司 | Walking operation platform for maintaining steel box girder arch bridge |
| CN114560426B (en) * | 2022-01-25 | 2023-05-09 | 中交二公局第三工程有限公司 | Be used for multi-functional self-propelled operation platform truck of steel arch rib section welded |
| CN115110420B (en) * | 2022-05-30 | 2024-06-25 | 中交路桥建设有限公司 | Arch bridge arch rib top hoist and mount construction equipment |
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| CN215405581U (en) * | 2021-05-31 | 2022-01-04 | 成都市新筑交通科技有限公司 | Arch rib maintenance vehicle suitable for box type arch rib inspection |
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| KR100401251B1 (en) * | 2000-07-10 | 2003-10-11 | 한국모노레일주식회사 | mobile and fixative bridge maintaining system |
| JP2005188022A (en) * | 2003-12-24 | 2005-07-14 | Mitsubishi Heavy Ind Ltd | Earthquake-proof bridge |
| JP6491582B2 (en) * | 2015-10-09 | 2019-03-27 | 鹿島建設株式会社 | Mobile trolley |
| CN110373995A (en) * | 2019-07-29 | 2019-10-25 | 成都市新筑路桥机械股份有限公司 | A kind of deck railway arch bridge crosses pier bridge-checking vehicle |
| CN111501545A (en) * | 2020-05-07 | 2020-08-07 | 中铁桥隧技术有限公司 | Maintenance truss vehicle for arch bridge of large-span steel truss arch |
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| CN215405581U (en) * | 2021-05-31 | 2022-01-04 | 成都市新筑交通科技有限公司 | Arch rib maintenance vehicle suitable for box type arch rib inspection |
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Address after: 611430 No. 799, hope road, Wujin street, Xinjin District, Chengdu, Sichuan (Industrial Park) Applicant after: Chengdu Xinzhu Transportation Technology Co.,Ltd. Applicant after: CHENGDU XINZHU ROAD & BRIDGE MACHINERY Co.,Ltd. Address before: 611400 121 Qingyun Middle Road, Jinhua Town, Xinjin County, Chengdu City, Sichuan Province Applicant before: Chengdu Xinzhu Transportation Technology Co.,Ltd. Applicant before: CHENGDU XINZHU ROAD & BRIDGE MACHINERY Co.,Ltd. |
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