CN108660928B - Bridge high pier climbing formwork lifting device - Google Patents
Bridge high pier climbing formwork lifting device Download PDFInfo
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- CN108660928B CN108660928B CN201810286985.7A CN201810286985A CN108660928B CN 108660928 B CN108660928 B CN 108660928B CN 201810286985 A CN201810286985 A CN 201810286985A CN 108660928 B CN108660928 B CN 108660928B
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- 238000009415 formwork Methods 0.000 title claims abstract description 94
- 230000009194 climbing Effects 0.000 title claims abstract description 45
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 19
- 230000003014 reinforcing effect Effects 0.000 description 19
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000007306 turnover Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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Abstract
The invention relates to the technical field of bridge high pier climbing formwork turning and lifting devices, and provides a bridge high pier climbing formwork lifting device which comprises a guide rail; the guide rail is connected with a telescopic device, a first reversing box and a second reversing box in a sliding way; the first reversing box is detachably connected with the telescopic device; the second reversing box is connected with the telescopic device through a lifting driving device; a plurality of stop blocks are arranged on the guide rail; ratchets are arranged in the first reversing box and the second reversing box; the first reversing box and the second reversing box are both in two states, namely an upward walking state and a downward walking state; when the reversing box is in an upward walking state, the lower end of the ratchet is in clamping fit with the top of the stop block; when the reversing box is in a downward walking state, the upper end of the ratchet is in clamping fit with the bottom of the stop block. The lifting device for the climbing formwork overturning of the high pier of the bridge can respectively lift the formwork system and the support system without other lifting equipment, and is convenient to operate and high in construction efficiency.
Description
Technical Field
The invention relates to the technical field of bridge high pier climbing formwork turning, in particular to a lifting device for a bridge high pier climbing formwork turning.
Background
The known method for constructing the high pier template of the bridge at present comprises the following steps: slip form construction, creeping formwork construction, slip turning combination construction, creeping turning combination construction, turnover formwork construction and support turnover formwork construction. The construction methods of slip form, creeping formwork, slip turning combination and climbing turning combination technically need to install special embedded parts in the constructed pier concrete as bearing members when lifting the formwork. The embedded parts have high quality and molding process requirements, the installation and positioning are accurate and strict, the embedded part construction and other process construction of the pier stud are mutually interfered, and the special embedded parts can be only used once and cannot be repeatedly recycled. Besides the defects, the slip form and slip turning combined technology strictly requires that the templates around the pier slide and rise synchronously, the construction has extremely high requirements on equipment, the setting time of the poured concrete and personnel, the template has small rigidity, and the appearance quality of the concrete is poor; the climbing frame turnover formwork construction technology needs to reserve more holes in poured concrete, the rigidity of a formwork is small, the appearance quality of the concrete is poor, an upper cross beam penetrates through the top space of a pier column to be poured to enable the construction of pier steel bars to be interfered, the rigidity of the formwork is small, the appearance quality of the concrete is poor, the climbing frame lifting operation is complex, a plurality of constructors are provided, and the requirement on synchronism is high; climbing formwork construction has strict requirements on special embedded part quality and installation quality, accidents caused by embedded part damage occur for many times in construction examples, climbing formwork takes the number of embedded climbing cones and the bearing capacity of a single climbing cone as safety guarantee measures, the measures are single, and the climbing cones are uneven in quality and stress and easily cause the accidents. The concrete strength needs to be considered when the creeping formwork climbs upwards.
A tower crane or a truck crane is required to be used as template turning and lifting power in traditional formwork turning construction, and safety accidents are easy to happen in the formwork removing process. The support rollover needs to use the tower crane to lift the support, the operation safety risk is large, the support cross beam occupies the top space of the poured concrete pier, and all the processes are mutually interfered. Most of the templates cannot be completely recycled and can only be partially recycled, and the waste is serious, so that the templates are not truly recycled materials.
The Chinese patent with the publication number of CN105839542B and publication date of 09 and 15 in 2017 discloses a self-lifting outer frame turnover device for a bridge high pier, which comprises an outer frame system, a telescopic device, an upper layer template system and a lower layer template system; the upper layer template system is positioned above the lower layer template system; the upper-layer template system and the lower-layer template system both comprise a layer of templates which surround a bridge high pier pouring cavity; reinforcing transverse back ridges are arranged on the outer surfaces of the templates of the upper template system and the lower template system; the reinforcing transverse back edges on the two adjacent templates are connected through a reinforcing transverse back edge connecting piece, so that the reinforcing transverse back edges are tightly held on the outer surfaces of the templates; the upper end and the lower end of each template of the upper-layer template system are provided with outer support systems; the outer support system comprises a crank arm beam, a straight beam and a vertical guide beam; crank arm cross beams are arranged at two ends of the straight cross beam; one end of the crank arm cross beam is connected with the reinforcing transverse back ridge, and the other end of the crank arm cross beam is connected with the straight cross beam; a space is reserved between the straight cross beam and the template; the crank arm beam, the straight beam and the reinforcing transverse back ridge form a template lifting interval through which a template can pass; the vertical guide beam is arranged on the outer side of the template; the vertical guide beam extends to the upper part of the upper formwork system from the lower end of the lower formwork system, and the length of the vertical guide beam is more than three times of the height of the formwork; the vertical guide beam is fixedly connected with the straight cross beam; the telescopic device is arranged between the vertical guide beam and the template; one end of the telescopic device is connected with the vertical guide beam in a sliding mode in the vertical direction, and the other end of the telescopic device is detachably connected with the template. And a lifting device for driving the telescopic device to slide up and down is arranged on the vertical guide beam.
The following problems exist when the device is adopted to carry out the construction of the climbing formwork:
1. in the using process of the telescopic device, a double-guide-beam structure is required to be adopted, and the telescopic device is arranged between two guide beams; the guide beam structure is not only troublesome in fixation, but also heavy in weight; in the process of lifting the guide beam bracket, the guide beam is heavier, so that not only is higher power required, but also potential safety hazards are increased; 2. in order to ensure that a telescopic rod in the telescopic device has enough telescopic space and the telescopic device does not interfere with other structures in the up-and-down moving process, when two guide beams are fixedly connected, a plurality of U-shaped reinforcing back ridges are adopted, two connecting ends of each U-shaped reinforcing back ridge are respectively and fixedly connected with one guide beam, the telescopic rod moves in the space between the two connecting ends of the U-shaped reinforcing back ridges, and the length of each U-shaped reinforcing back ridge is related to the telescopic length of the telescopic rod; the U-shaped reinforcing back edge is arranged, so that the space behind the guide beam is occupied, the weight of the guide beam structure is further increased, and potential safety hazards are further increased when the guide beam structure is lifted; the longer the length of the U-shaped reinforcing back edge is, the longer the distance from the gravity center of the U-shaped reinforcing back edge to the guide beam is, the larger the bending load of the U-shaped reinforcing back edge to the guide beam is, and the instability risk exists in the process of lifting the guide beam; 3. the lifting device is arranged on the vertical guide beam and can only drive the telescopic device to slide up and down; when the guide beam structure needs to be lifted, another lifting device needs to be arranged on the template system, so that the operation is troublesome, the workload of workers is large, and the universality is poor. Therefore, there is a need for an improved apparatus for overturning a high pier of a bridge from an external frame.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the bridge high pier climbing formwork lifting device can lift a formwork system and a support system.
The technical scheme adopted by the invention for solving the technical problems is as follows: the bridge high pier climbing formwork lifting device comprises a guide rail; the guide rail is connected with a telescopic device, a first reversing box and a second reversing box in a sliding way; the first reversing box is arranged above the telescopic device; the second reversing box is arranged below the telescopic device; the first reversing box is detachably connected with the telescopic device; the second reversing box is connected with the telescopic device through a lifting driving device; a plurality of stop blocks are arranged on the guide rail; rotatable ratchets are arranged in the first reversing box and the second reversing box; the first reversing box and the second reversing box are in two states, namely an upward walking state and a downward walking state; when the first reversing box and the second reversing box are in an upward walking state, the lower end of the ratchet is in clamping fit with the top of the stop block; when the first reversing box and the second reversing box are in a downward walking state, the upper end of the ratchet is in clamping fit with the bottom of the stop block.
Furthermore, rotatable rotating shafts are transversely arranged in the first reversing box and the second reversing box; the rotating shaft is sleeved with a rotatable ratchet; a spring sleeved on the rotating shaft is arranged between the ratchet and the rotating shaft; one end of the rotating shaft is provided with a reversing handle; the outer walls of the first reversing box and the second reversing box are respectively provided with a first limiting column and a second limiting column; when the reversing handle is clamped on the first limiting column, the upper end of the ratchet is clamped and matched with the bottom of the stop block; when the reversing handle is clamped on the second limiting column, the lower end of the ratchet is clamped and matched with the top of the stop block.
Further, the telescopic device comprises a box seat and a telescopic arm; one side of the box seat is provided with a telescopic arm; the telescopic arm is in sliding fit with the box base; the rear end of the box seat is provided with a track limiting device; the rail limiting device comprises a pair of seat plates which are vertically arranged at the rear end of the box seat; at least two groups of limiting wheel sets are arranged on the inner side surface of each seat plate along the direction vertical to the axis of the telescopic arm; each group of limiting wheel sets comprises an inner guide wheel and an outer guide wheel, and a track mounting gap is formed between the outer peripheral surface of the inner guide wheel and the outer peripheral surface of the outer guide wheel.
Furthermore, the telescopic arm comprises a supporting beam arranged on one side of the box seat; the supporting beam is in sliding fit with the box base; and the support beam is also provided with a telescopic driving device.
Furthermore, supporting beams are arranged on two side surfaces of the box seat; the two supporting beams are arranged in parallel and are respectively matched with the box base in a sliding way; the two supporting beams are fixedly connected.
Furthermore, a limiting plate is fixed on the side surface of the box seat; the supporting beam is arranged between the box seat and the limiting plate in a sliding mode; at least two lower-layer positioning rotating wheels and at least two upper-layer positioning rotating wheels are arranged between the limiting plate and the side surface of the box seat; the outer circumferential surface of each lower positioning rotating wheel is in rolling contact with the lower surface of the support beam; the outer circumferential surface of each upper positioning rotating wheel is in rolling contact with the upper surface of the supporting beam.
Furthermore, driving pieces for driving the ratchets to rotate are respectively arranged on the first reversing box and the second reversing box.
Further, the driving piece is a hydraulic cylinder.
Furthermore, the guide rail is also connected with another telescopic device below the second reversing box in a sliding manner, and the two telescopic devices are connected.
Furthermore, a manual anti-falling reversing box is connected to the guide rail in a sliding manner; the manual anti-falling reversing box is fixedly connected with the telescopic device; a rotatable rotating shaft is transversely arranged in the manual anti-falling reversing box; the rotating shaft is sleeved with a rotatable ratchet; a spring sleeved on the rotating shaft is arranged between the ratchet and the rotating shaft; one end of the rotating shaft is provided with a reversing handle; a first limiting column and a second limiting column are arranged on the outer wall of the manual anti-falling reversing box; when the reversing handle is clamped on the first limiting column, the upper end of the ratchet is clamped and matched with the bottom of the stop block; when the reversing handle is clamped on the second limiting column, the lower end of the ratchet is clamped and matched with the bottom of the stop block.
The invention has the beneficial effects that: when the lifting device for the bridge high pier climbing formwork is used, the guide rail is used as a support, the two reversing boxes are controlled to be in an upward walking state at the same time, and then the extension stroke and the retraction stroke of the lifting driving device are controlled, so that the telescopic device can move upwards; the two reversing boxes are controlled to be in an upward walking state and a downward walking state alternately, and then the extension stroke and the retraction stroke of the lifting driving device are controlled, so that the telescopic device can move downwards. The two reversing boxes are controlled to be in a downward walking state at the same time, the telescopic device is used as a support, and the lifting driving device is controlled to extend and retract strokes, so that the guide rail can move upwards. According to the lifting device for the bridge high pier climbing formwork, when the climbing formwork is turned, the formwork is fixedly connected with the telescopic device, the guide rail is fixedly connected with the support system, the formwork system and the support system can be respectively lifted without extra hoisting equipment, the operation is convenient, and the construction efficiency is high.
Drawings
FIG. 1 is a perspective view of the lifting device of the climbing formwork for high piers of bridges of the present invention;
FIG. 2 is a schematic structural diagram of the lifting device of the bridge high pier climbing formwork installed on a formwork system and a bracket system;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is an initial state diagram of the lifting cycle of the high pier climbing formwork lifting device for a bridge of the present invention;
FIG. 5 is a state diagram of the lifting device of the present invention after completion of an elongation stroke of the lifting driving device during a lifting cycle;
FIG. 6 is a state diagram of the lift drive of the present invention during the lowering cycle in preparation for the retraction stroke;
FIG. 7 is a state diagram of the lifting drive device of the high pier climbing formwork lifting device of the bridge of the present invention during the descending cycle ready for the elongation stroke;
FIG. 8 is a perspective view of a first reversing box and a second reversing box in the device for lifting a climbing formwork for a high pier of a bridge of the invention;
FIG. 9 is a front view of FIG. 8;
FIG. 10 is a perspective view of the telescoping device in the lifting device of the bridge high pier climbing formwork of the present invention;
FIG. 11 is a perspective view of the telescopic device installed on the guide rail in the lifting device of the bridge high pier climbing formwork of the present invention;
FIG. 12 is a top view of FIG. 11;
FIG. 13 is a perspective view of a manual anti-falling reversing box in the high pier climbing formwork lifting device of the bridge of the invention;
fig. 14 is a front view of fig. 13.
The reference numbers in the figures are: 1-bracket system, 2-upper formwork system, 3-lower formwork system, 10-guide rail, 11-crank beam, 12-straight beam, 20-telescoping device, 21-formwork, 22-reinforced transverse ridge, 23-reinforced transverse ridge connecting piece, 24-formwork lifting interval, 30-first reversing box, 40-lifting driving device, 50-manual anti-falling reversing box, 60-second reversing box, 101-stop block, 201-box seat, 202-telescoping arm, 203-seat plate, 204-limiting wheel set, 205-limiting plate, 206-lower positioning wheel, 207-upper positioning wheel, 301-rotating shaft, 302-ratchet, 303-spring, 304-first limiting column, 305-second limiting column, 306-reversing handle, 307-driving piece, 308-connecting bolt, 309-spring catch, 310-arc groove, 2021-supporting beam, 2022-telescopic driving device, 2041-track inner guide wheel and 2042-track outer guide wheel.
Detailed Description
The invention is further illustrated with reference to the following figures and examples:
as shown in fig. 1 to 14, the lifting device for the bridge high pier climbing formwork comprises a guide rail 10; the guide rail 10 is connected with a telescopic device 20, a first reversing box 30 and a second reversing box 60 in a sliding way; the first reversing box 30 is arranged above the telescopic device 20; the second reversing box 60 is arranged below the telescopic device 20; the first reversing box 30 is detachably connected with the telescopic device 20; the second reversing box 60 is connected with the telescopic device 20 through the lifting driving device 40; a plurality of stop blocks 101 are arranged on the guide rail 10; rotatable ratchets 302 are arranged in the first reversing box 30 and the second reversing box 60; the first and second reversing boxes 30 and 60 have two states, namely an upward traveling state and a downward traveling state; when the first reversing box 30 and the second reversing box 60 are in an upward walking state, the lower end of the ratchet 302 is in clamping fit with the top of the stop block 101; when the first reversing box 30 and the second reversing box 60 are in a downward walking state, the upper end of the ratchet 302 is in clamping fit with the bottom of the stop block 101.
The guide rail 10 is vertically arranged, and the telescopic device 20, the first reversing box 30 and the second reversing box 60 are respectively connected to the guide rail 10 in a sliding manner; the first reversing box 30 and the second reversing box 60 may be simultaneously disposed above the telescopic device 20, or may be simultaneously disposed below the telescopic device 20; preferably, as shown in fig. 1, the first direction changing box 30 is disposed above the telescopic device 20, and the second direction changing box 60 is disposed below the telescopic device 20.
The lifting driving device 40 is a power device, and the purpose of the lifting driving device is to drive the telescopic device 20 to move up and down along the guide rail 10; the lifting driving device 40 can be a cylinder, a screw lifting mechanism, etc., and preferably, the lifting driving device 40 is a hydraulic cylinder;
the top of the stopper 101 has a supporting surface engaged with the lower end of the ratchet teeth 302, and the bottom of the stopper 101 has a lifting surface engaged with the upper end of the ratchet teeth 302. For convenience of description, the first reversing box 30 and the second reversing box 60 are collectively referred to as a reversing box, and when the reversing box slides on the guide rail 10, the reversing box is divided into two states, namely an upward traveling state and a downward traveling state; when the reversing box is in an upward walking state, the reversing box can slide upwards along the guide rail 10, after the ratchet 302 in the reversing box crosses the stop block 101, the lower end of the ratchet 302 is clamped on the supporting surface at the top of the stop block 101, and the reversing box can be prevented from falling downwards through the matching of the lower end of the ratchet 302 and the top of the stop block 101. When the reversing box is in a downward walking state, the reversing box can slide downwards along the guide rail 10, after the ratchet 302 in the reversing box crosses the stop block 101, the upper end of the ratchet 302 is clamped on the lifting surface at the bottom of the stop block 101, and through the matching of the upper end of the ratchet 302 and the bottom of the stop block 101, the guide rail 10 can be driven to move upwards together when the reversing box moves upwards.
According to the lifting device for the bridge high pier climbing formwork, firstly, the position of the guide rail 10 is controlled to be unchanged, the two reversing boxes are controlled to be in an upward walking state at the same time, and then the extension stroke and the retraction stroke of the lifting driving device 40 are controlled, so that the telescopic device 20 can move upwards; the two reversing boxes are controlled to be in an upward walking state and a downward walking state alternately, and then the extension stroke and the retraction stroke of the lifting driving device 40 are controlled, so that the telescopic device 20 can move downwards. Then the position of the telescopic device 20 is controlled to be unchanged, the two reversing boxes are controlled to be in a downward walking state at the same time, the telescopic device 20 is used as a support, and the extending stroke and the retracting stroke of the lifting driving device 40 are controlled, so that the guide rail 10 can move upwards. According to the lifting device for the climbing formwork overturning for the high pier of the bridge, when the climbing formwork overturning construction is carried out, the formwork 21 is fixedly connected with the telescopic device 20, the guide rail 10 is fixedly connected with the support system 1, the formwork 21 and the support system 1 can be respectively lifted without extra hoisting equipment, the operation is convenient, and the construction efficiency is high.
The first and second reversing boxes 30 and 60 not only can slide on the guide rails 10, but also function as fulcrums in the lifting formwork system and the support system 1; preferably, the first reversing box 30 and the second reversing box 60 are both transversely provided with a rotatable rotating shaft 301 therein; a rotatable ratchet 302 is sleeved on the rotating shaft 301; a spring 303 sleeved on the rotating shaft 301 is arranged between the ratchet 302 and the rotating shaft 301; a reversing handle 306 is arranged at one end of the rotating shaft 301; the outer walls of the first reversing box 30 and the second reversing box 60 are provided with a first limiting column 304 and a second limiting column 305; when the reversing handle 306 is clamped on the first limiting column 304, the upper end of the ratchet 302 is clamped and matched with the bottom of the stop block 101; when the reversing handle 306 is clamped on the second limiting column 305, the lower end of the ratchet 302 is in clamping fit with the top of the stop block 101.
The rotating shaft 301 can rotate in the reversing box, and the ratchet 302 can rotate on the rotating shaft 301. When the reversing handle 306 is clamped on the second limiting column 305, the rotating shaft 301 drives the spring 303 to generate elastic force, so that the ratchet 302 rotates, the lower end of the ratchet 302 is in contact with the surface of the guide rail 10 or the surface of the stop block 101, and when the reversing box slides upwards on the guide rail 10, the ratchet 302 passes over the stop block 101, and then the lower end of the ratchet 302 is clamped on the top of the stop block 101 under the action of the elastic force of the spring 303. When the reversing handle 306 is clamped on the first limiting column 304, the rotating shaft 301 drives the spring 303 to generate elastic force, so that the ratchet 302 rotates, the upper end of the ratchet 302 is in contact with the surface of the guide rail 10 or the surface of the stop block 101, and when the reversing box slides downwards on the guide rail 10, the ratchet 302 passes over the stop block 101, and then the upper end of the ratchet 302 is clamped at the bottom of the stop block 101 under the action of the elastic force of the spring 303. The reversing box can also be in other structures, for example, the ratchet 302 is arranged in the reversing box, a hydraulic cylinder is also arranged on the reversing box, the hydraulic cylinder is connected with the ratchet 302, and the ratchet 302 is driven to rotate in the reversing box through the hydraulic cylinder.
Fig. 2 and 3 are schematic structural diagrams illustrating a lifting creeping formwork overturning device by using the high pier creeping formwork lifting device of the bridge; the climbing formwork overturning device comprises a support system 1, an upper-layer formwork system 2 and a lower-layer formwork system 3, wherein the upper-layer formwork system 2 is located above the lower-layer formwork system 3. The upper layer template system 2 and the lower layer template system 3 both comprise a layer of templates 21 which surround a bridge high pier pouring cavity; the outer surfaces of the formworks 21 of the upper formwork system 2 and the lower formwork system 3 are respectively provided with a reinforced transverse back ridge 22; the reinforced transverse back edges 22 on the two adjacent templates 21 are connected through reinforced transverse back edge connecting pieces 23, so that the reinforced transverse back edges 22 are tightly held on the outer surfaces of the templates 21.
The upper end and the lower end of each template 21 of the upper-layer template system 2 are respectively provided with a support system 1, and each support system 1 comprises a crank arm beam 11 and a straight beam 12; both ends of the straight beam 12 are provided with crank arm beams 11; one end of the crank arm beam 11 is connected with the reinforcing transverse back ridge 22, and the other end of the crank arm beam is connected with the straight beam 12; the straight cross beam 12 and the template 21 are spaced; the crank arm beam 11, the straight beam 12 and the reinforced transverse back edge 22 form a formwork lifting interval 24 which can be penetrated by the formwork 21.
The stupefied 22 of reinforcing horizontal back on two adjacent templates 21 is connected through reinforcing stupefied connecting piece 23 of horizontal back for stupefied 22 of reinforcing horizontal back embraces the surface of template 21 at upper template system 2 and lower floor's template system, is in order to make template 21 can lock tightly on the concrete after pouring the completion, thereby provides the holding power for template 21 of follow-up promotion lower floor.
The steps of lifting the template system and the bracket system 1 by adopting the lifting device of the bridge high pier climbing formwork are as follows:
1. mounting a bridge high pier climbing formwork lifting device;
the first reversing box 30 and the second reversing box 60 are slidably mounted on the guide rail 10, and one end of the telescopic device 20 is slidably mounted on the guide rail 10; the first reversing box 30 is connected with the telescopic device 20; the second reversing box 60 is connected with the telescopic driving device 40; the telescopic driving device 40 is connected with the telescopic device 20; the guide rail 10 extends from the lower end of the lower layer formwork system 3 to the upper part of the upper layer formwork system 2, and the length of the guide rail 10 is more than three times of the height of the formwork 21; installing the guide rail 10 on the outer side of the template 21, and fixedly connecting the guide rail 10 with the straight beam 12 of the bracket system 1;
2. stripping and overturning the lower layer template system 3
Connecting the telescoping device 20 with the template 21 of the lower template system 3; specifically, the expansion device 20 is fixedly connected with a reinforced transverse back ridge 22 on a formwork 21 of the lower formwork system 3.
As shown in fig. 4, the reversing handles 306 on the first reversing box 30 and the second reversing box 60 are clamped on the second limiting column 305, so that the lower ends of the ratchet teeth 302 on the second reversing box 60 are clamped on the top of the stop block 101 on the guide rail 10, and the positions are used as bearing fulcrums;
and removing the reinforcing cross ridge connecting piece 23 between two adjacent formworks 21 of the lower formwork system 3 so that the formworks 21 can be separated from the concrete. Then starting the telescopic device 20 to enable the telescopic device 20 to contract, so as to drive the template 21 to be separated from the lower-layer concrete, and enabling the template 21 to be located in the template lifting interval 24;
starting the lifting driving device 40, and extending the stroke of the lifting driving device 40 to drive the expansion device 20 and the first reversing box 30 to move upwards so as to enable the template 21 to move upwards;
as shown in fig. 5, after one extension stroke of the lifting driving device 40 is completed, the lower end of the ratchet 302 of the first direction changing box 30 is clamped on the top of the stopper 101 on the guide rail 10, and this position is used as a new bearing fulcrum; the lifting driving device 40 retracts to move, and then drives the second reversing box 60 to move upwards;
after a retraction stroke of the lifting driving device 40 is finished, the lower end of the ratchet 302 of the second reversing box 60 is clamped on the top of the stop block 101 on the guide rail 10, and at the moment, the lifting driving device 40 is controlled to circularly perform an extension stroke and a retraction stroke until the template 21 of the lower template system 3 is overturned to a specified position above the upper template system 2; then starting the expansion device 20 to extend the expansion device 20, so as to move the formworks 21 to corresponding positions, reinstalling the lower formwork system 3 above the upper formwork system 2, and fixedly connecting the reinforced transverse back edges 22 on the two adjacent formworks 21 through the reinforced transverse back edge connecting pieces 23; and then pouring a third layer of concrete.
3. Lifting the mounting system 1
Firstly, fixing a telescopic device 20 on a template 21 of a lower template system 3 which is turned and lifted above an upper template system 2; the telescopic device 20 plays a role in bearing force; clamping a reversing handle 306 of the first reversing box 30 on the first limiting column 305; so that the upper end of the ratchet 302 of the first reversing box 30 is clamped at the bottom of the stop block 101; taking the position as a bearing fulcrum; the connection between the crank arm beam 11 and the reinforced transverse back ridge 22 is disconnected, and then the telescopic device 20 is started to extend the telescopic device 20, so that the crank arm beam 11 is separated from the reinforced transverse back ridge 22;
then the reversing handle 306 of the second reversing box 60 is clamped on the first limiting column 304; starting the lifting driving device 40, and extending the stroke of the lifting driving device 40 to drive the second reversing box 60 to move downwards;
after one extension stroke of the lifting driving device 40 is finished, the upper end of the ratchet 302 of the second reversing box 60 is clamped at the bottom of the stop block 101, and the position becomes a new lifting fulcrum; the lifting driving device 40 retracts, and the guide rail 10 is driven to move upwards through the second reversing box 60, so that the support system 1 is driven to move upwards;
after a retraction stroke of the lifting driving device 40 is completed, the upper end of the ratchet 302 of the first reversing box 30 is clamped at the bottom of the stop block 101, at this time, the lifting driving device 40 is controlled to circularly extend and retract the stroke until the support system 1 is lifted to a specified position, then the telescopic device 20 is started to contract the telescopic device 20, so that the crank arm beam 11 is in contact with the reinforced transverse back ridge 22, the crank arm beam 11 on the support system 1 is fixedly connected with the reinforced transverse back ridge 22 on the template 21 of the lower-layer template system 3, and the integral lifting of the support system 1 is completed.
4. The upper layer template system 2 is demoulded and turned
As shown in fig. 6, the lifting driving device 40 is started, the lifting driving device 40 extends for a stroke, so that the second direction changing box 60 moves downwards, and after one extension stroke of the lifting driving device 40 is completed, the direction changing handle 306 of the second direction changing box 60 is clamped on the second limit column 305, so that the lower end of the ratchet 302 of the second direction changing box 60 is clamped on the top of the stop block 101; then the fixed connection between the expansion device 20 and the template 21 of the lower template system 3 is released; then starting the telescoping device 20 to enable the telescoping device 20 to contract, and enabling the telescoping device 20 to be separated from the template 21 of the lower template system 3;
then, taking the clamping position of the ratchet 302 of the second reversing box 60 and the stop block 101 as a bearing fulcrum, the retraction stroke of the lifting driving device 40 is shortened, and the telescopic device 20 and the first reversing box 30 move downwards under the action of gravity;
after a retraction stroke of the lifting driving device 40 is completed, the reversing handle 306 of the first reversing box 30 is clamped on the second limiting column 305, so that the lower end of the ratchet 302 of the first reversing box 30 is clamped on the top of the stop block 101; the position becomes a new bearing fulcrum, the reversing handle 306 of the second reversing box 60 is clamped on the first limiting column 304, and the lifting driving device 40 extends for a stroke to drive the second reversing box 60 to move downwards;
after one extension stroke of the lifting driving device 40 is completed, the reversing handle 306 of the second reversing box 60 is clamped on the second limiting column 305, so that the lower end of the ratchet 302 of the second reversing box is clamped on the top of the stop block 101; the position becomes a new bearing fulcrum, and then the reversing handle 306 of the first reversing box 30 is clamped on the first limiting column 304;
circulating according to the operation process, and enabling the telescopic device 20 to move downwards on the guide rail 10 until the telescopic device 20 is lowered to the position of the upper-layer template system 3; then starting the telescopic device 20 to extend the telescopic device 20, and fixedly connecting the telescopic device 20 with the template 21 of the upper template system 3;
then, according to the operation of the step 2, the upper layer template system 2 can be disassembled and turned.
In conclusion, the lifting device for the bridge high pier climbing formwork can lift the formwork system and the support system 1 without installing other lifting equipment on the formwork system or the support system 1, and has the advantages of simple structure, convenience in operation and higher safety.
The telescopic device 20 is mainly used for disassembling the template 21 and enabling the disassembled template 21 to horizontally move to the template lifting section 24; the telescopic device 20 may be of various structures, for example, a hydraulic cylinder is directly adopted, one end of the hydraulic cylinder is slidably connected with the guide rail 10, and the other end of the hydraulic cylinder is detachably and fixedly connected with the template 21.
In order to reduce the cost and facilitate the operation, the telescopic device 20 preferably comprises a box base 201 and a telescopic arm 202; one side of the box base 201 is provided with a telescopic arm 202; the telescopic arm 202 is in sliding fit with the box base 201; a track limiting device is arranged at the rear end of the box base 201; the rail limiting device comprises a pair of seat plates 203 which are vertically arranged at the rear end of the box seat 201; at least two groups of limiting wheel sets 204 are arranged on the inner side surface of each seat plate 203 along the direction vertical to the axis of the telescopic arm 202; each set of limiting wheel set 204 includes an inner track guide wheel 2041 and an outer track guide wheel 2042, and a track mounting gap is formed between the outer peripheral surface of the inner track guide wheel 2041 and the outer peripheral surface of the outer track guide wheel 2042.
The box base 201 is a cubic structure formed by welding an upper wall, a lower wall, a front wall, a rear wall and two side walls; the telescopic arm 202 is arranged on the outer surface of one side wall of the box base 201; the telescopic arm 202 can slide horizontally relative to the side wall of the box base 201, and further, can be telescopic relative to the box base 201. The rear end of the box base 201 refers to the end which is slidably connected with the guide rail 10; the seat plate 203 can be fixed on the rear wall of the box seat 201, and can also be fixedly connected with the side wall of the box seat 201; the two seat plates 203 are arranged in parallel, and the inner side surface of each seat plate 203 is provided with a track inner guide wheel 2041 and a track outer guide wheel 2042 for positioning the guide rail 10.
When the telescopic device is used, the telescopic device is mounted on the vertically arranged guide rail 10 through at least four rail inner guide wheels 2041 and four rail outer guide wheels 2042, and a rail mounting gap between the outer circumferential surface of the rail inner guide wheel 2041 and the outer circumferential surface of the rail outer guide wheel 2042 is adjusted to be matched with the guide rail 10, so that the telescopic device 20 can slide up and down along the guide rail 10 through the rail limiting device.
The telescopic device 20 of the present invention can be slidably mounted on one guide rail 10 by providing a pair of seat plates 203 and a stopper wheel set 204 engaged with the guide rail 10 at the rear end of the box base 201, thereby achieving the up-and-down sliding of the telescopic device 20 on the guide rail 10. Compared with the prior art, the telescopic device 20 can move up and down by only one guide rail 10, so that the number of the guide rails 10 is reduced, and the manufacturing cost is saved; and need not set up the U-shaped and strengthen the stupefied, avoided telescopic boom 202 and the risk of guide rail 10 interfering mutually, do not occupy the space behind the guide rail 10 moreover.
The telescopic arm 202 has the functions of firstly playing a supporting role and secondly realizing a telescopic function; the telescopic arm 202 can be implemented in various ways, for example, the telescopic arm 202 can be directly connected to the template 21 by using an air cylinder, which is a preferred scheme for facilitating the connection between the telescopic arm 202 and the template 21; the telescopic arm 202 comprises a support beam 2021 arranged on one side of the box base 201; the supporting beam 2021 is in sliding fit with the box base 201; the support beam 2021 is further provided with a telescopic driving device 2022.
The supporting beam 2021 is slidably mounted on one of the side walls of the box base 201; the supporting beam 2021 is in sliding fit with the box base 201 and is used for supporting the formwork 21; the telescopic driving device 2022 is used for extending and contracting the supporting beam 2021 relative to the box base 201.
When the formwork 21 is connected with the supporting beams 2021, in order to ensure the stress balance of the box base 201, as a preferred scheme, the supporting beams 2021 are arranged on both side surfaces of the box base 201; the two supporting beams 2021 are arranged in parallel and are respectively in sliding fit with the box base 201; the two support beams 2021 are fixedly connected. The ends of the two support beams 2021 are fixedly connected with the template 21 respectively; by arranging the two supporting beams 2021, the two sides of the box base 201 bear the weight of the supporting beams 2021 and the weight of the template 21 respectively, so that the stress balance of the box base is ensured, and the stability of the device is improved.
In order to prolong the service life of the supporting beam 2021 and reduce the friction between the supporting beam 2021 and the box base 201 during sliding, preferably, a limiting plate 205 is fixed on the side surface of the box base 201; the supporting beam 2021 is slidably arranged between the box base 201 and the limiting plate 205; at least two lower-layer positioning rotating wheels 206 and at least two upper-layer positioning rotating wheels 207 are arranged between the limiting plate 205 and the side surface of the box seat 201; the outer circumferential surface of each lower positioning runner 206 is in rolling contact with the lower surface of the support beam 2021; the outer circumferential surface of each upper positioning pulley 207 is in rolling contact with the upper surface of the support beam 2021.
By arranging the limit plate 205, the support beam 2021 is prevented from moving in the axial direction of the lower positioning runner 206; ensuring the stability of the support beam 2021 during expansion and contraction. By providing at least two lower positioning wheels 206 and at least two upper positioning wheels 207, the support beam 2021 is prevented from moving up and down, and the friction force when the support beam 2021 extends and contracts is reduced.
The telescopic driving device 2022 may also be an air cylinder, a screw rod adjusting device, or the like, and preferably, the telescopic driving device 2022 is a hydraulic cylinder.
In the process of descending the telescopic device 20, every time the telescopic device descends for one cycle, the direction of the ratchet teeth 302 in the first reversing box 30 and the second reversing box 60 needs to be changed, and in order to reduce the labor amount of workers and improve the operation efficiency, as a preferred scheme, the first reversing box 30 and the second reversing box 60 are respectively provided with a driving piece 307 for driving the ratchet teeth 302 to rotate. The driving member 307 may be a pneumatic cylinder, and preferably, the driving member 307 is a hydraulic cylinder. The cylinder body of the hydraulic cylinder is hinged on the box body, and the piston rod of the hydraulic cylinder is connected with the connecting bolt 308; the connecting bolt 308 is connected with the ratchet 302; the hydraulic cylinder drives the ratchet 302 to rotate through the connecting bolt 308, and by setting the hydraulic cylinder as power, a worker does not need to climb to the position of the reversing box to operate, and only needs to control the hydraulic cylinder to overcome the elastic force of the spring 303, so that the automatic reversing of the reversing box can be realized, the difficulty of the worker in operation is reduced, the workload of the worker is reduced, and the working efficiency is improved. Further, arc-shaped grooves 310 are respectively formed in the wall of the reversing box and at positions corresponding to the two ends of the connecting pin 308, and the two ends of the connecting pin 308 respectively extend out of the arc-shaped grooves 310 and can move in the arc-shaped grooves 310. By arranging the arc-shaped groove 310, the connection pin 308 is received more uniformly, and the phenomenon of locking of the connection pin 308 is avoided.
Since the formwork 21 has a heavy weight, in order to improve the structural stability and enhance the load-bearing capacity of the telescopic device 20, preferably, another telescopic device 20 located below the second reversing box 60 is further slidably connected to the guide rail 10, and the two telescopic devices 20 are connected. Further, the two telescopic devices are connected through a connecting piece with adjustable length, so that the mounting positions of the two telescopic devices 20 can be adjusted.
In order to avoid the risk of dropping the telescopic device 20 when the hydraulic cylinders on the first reversing box 30 and the second reversing box 60 fail, the guide rail 10 is preferably further slidably connected with a manual anti-falling reversing box 50; the manual anti-falling reversing box 50 is fixedly connected with the telescopic device 20; a rotatable rotating shaft 301 is transversely arranged in the manual anti-falling reversing box 50; a rotatable ratchet 302 is sleeved on the rotating shaft 301; a spring 303 sleeved on the rotating shaft 301 is arranged between the ratchet 302 and the rotating shaft 301; a reversing handle 306 is arranged at one end of the rotating shaft 301; a first limiting column 304 and a second limiting column 305 are arranged on the outer wall of the manual anti-falling reversing box 50; when the reversing handle 306 is clamped on the first limiting column 304, the upper end of the ratchet 302 is clamped and matched with the bottom of the stop block 101; when the reversing handle 306 is clamped on the second limit column 305, the lower end of the ratchet 302 is in clamping fit with the bottom of the stop block 101.
When the manual anti-falling reversing box 50 slides upwards on the guide rail 10, the reversing handle 306 of the manual anti-falling reversing box 50 is clamped on the second limiting column 305, at the moment, even if the hydraulic cylinders on the first reversing box 30 and the second reversing box 60 are out of work, the telescopic device 20 can be prevented from falling down through the matching of the ratchet 302 in the manual anti-falling reversing box 50 and the stop block 101, and the safety of the whole device is improved.
Claims (9)
1. High mound of bridge turns over creeping formwork hoisting device, its characterized in that: comprises a guide rail (10); the guide rail (10) is connected with a telescopic device (20), a first reversing box (30) and a second reversing box (60) in a sliding manner; the first reversing box (30) is arranged above the telescopic device (20); the second reversing box (60) is arranged below the telescopic device (20); the first reversing box (30) is detachably connected with the telescopic device (20); the second reversing box (60) is connected with the telescopic device (20) through a lifting driving device (40); a plurality of stop blocks (101) are arranged on the guide rail (10); rotatable ratchets (302) are arranged in the first reversing box (30) and the second reversing box (60); the first reversing box (30) and the second reversing box (60) are in two states, namely an upward walking state and a downward walking state; when the first reversing box (30) and the second reversing box (60) are in an upward walking state, the lower end of the ratchet (302) is in clamping fit with the top of the stop block (101); when the first reversing box (30) and the second reversing box (60) are in a downward walking state, the upper end of the ratchet (302) is in clamping fit with the bottom of the stop block (101);
the telescopic device (20) comprises a box base (201) and a telescopic arm (202); one side of the box base (201) is provided with a telescopic arm (202); the telescopic arm (202) is in sliding fit with the box base (201); a track limiting device is arranged at the rear end of the box seat (201); the rail limiting device comprises a pair of seat plates (203) which are vertically arranged at the rear end of the box seat (201); at least two groups of limiting wheel sets (204) are arranged on the inner side surface of each seat plate (203) along the direction vertical to the axis of the telescopic arm (202); each group of limiting wheel sets (204) comprises an inner track guide wheel (2041) and an outer track guide wheel (2042), and a track mounting gap is formed between the outer peripheral surface of the inner track guide wheel (2041) and the outer peripheral surface of the outer track guide wheel (2042).
2. The bridge high pier climbing formwork lifting device according to claim 1, characterized in that: rotatable rotating shafts (301) are transversely arranged in the first reversing box (30) and the second reversing box (60); the rotating shaft (301) is sleeved with a rotatable ratchet (302); a spring (303) sleeved on the rotating shaft (301) is arranged between the ratchet (302) and the rotating shaft (301); one end of the rotating shaft (301) is provided with a reversing handle (306); the outer walls of the first reversing box (30) and the second reversing box (60) are respectively provided with a first limiting column (304) and a second limiting column (305); when the reversing handle (306) is clamped on the first limiting column (304), the upper end of the ratchet (302) is clamped and matched with the bottom of the stop block (101); when the reversing handle (306) is clamped on the second limiting column (305), the lower end of the ratchet (302) is in clamping fit with the top of the stop block (101).
3. The bridge high pier climbing formwork lifting device according to claim 1, characterized in that: the telescopic arm (202) comprises a support beam (2021) arranged on one side of the box base (201); the supporting beam (2021) is in sliding fit with the box base (201); the support beam (2021) is also provided with a telescopic driving device (2022).
4. The bridge high pier climbing formwork lifting device according to claim 3, characterized in that: supporting beams (2021) are arranged on two side surfaces of the box base (201); the two supporting beams (2021) are arranged in parallel and are respectively matched with the box base (201) in a sliding way; the two support beams (2021) are fixedly connected.
5. The bridge high pier climbing formwork lifting device according to claim 3 or 4, characterized in that: a limiting plate (205) is fixed on the side surface of the box seat (201); the supporting beam (2021) is arranged between the box base (201) and the limiting plate (205) in a sliding manner; at least two lower-layer positioning rotating wheels (206) and at least two upper-layer positioning rotating wheels (207) are arranged between the limiting plate (205) and the side surface of the box seat (201); the outer circumferential surface of each lower positioning rotating wheel (206) is in rolling contact with the lower surface of the support beam (2021); the outer circumferential surface of each upper positioning rotating wheel (207) is in rolling contact with the upper surface of the supporting beam (2021).
6. The bridge high pier climbing formwork lifting device according to claim 2, characterized in that: the first reversing box (30) and the second reversing box (60) are respectively provided with a driving piece (307) for driving the ratchet (302) to rotate.
7. The bridge high pier climbing formwork lifting device according to claim 6, characterized in that: the driving member (307) is a hydraulic cylinder.
8. The bridge high pier climbing formwork lifting device according to claim 1, characterized in that: the guide rail (10) is also connected with another telescopic device (20) which is positioned below the second reversing box (60) in a sliding mode, and the two telescopic devices (20) are connected.
9. The bridge high pier climbing formwork lifting device according to claim 8, characterized in that: the guide rail (10) is also connected with a manual anti-falling reversing box (50) in a sliding manner; the manual anti-falling reversing box (50) is fixedly connected with the telescopic device (20); a rotatable rotating shaft (301) is transversely arranged in the manual anti-falling reversing box (50); the rotating shaft (301) is sleeved with a rotatable ratchet (302); a spring (303) sleeved on the rotating shaft (301) is arranged between the ratchet (302) and the rotating shaft (301); one end of the rotating shaft (301) is provided with a reversing handle (306); a first limiting column (304) and a second limiting column (305) are arranged on the outer wall of the manual anti-falling reversing box (50); when the reversing handle (306) is clamped on the first limiting column (304), the upper end of the ratchet (302) is clamped and matched with the bottom of the stop block (101); when the reversing handle (306) is clamped on the second limiting column (305), the lower end of the ratchet (302) is in clamping fit with the bottom of the stop block (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810286985.7A CN108660928B (en) | 2018-03-30 | 2018-03-30 | Bridge high pier climbing formwork lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810286985.7A CN108660928B (en) | 2018-03-30 | 2018-03-30 | Bridge high pier climbing formwork lifting device |
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| Publication Number | Publication Date |
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| CN108660928A CN108660928A (en) | 2018-10-16 |
| CN108660928B true CN108660928B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810286985.7A Active CN108660928B (en) | 2018-03-30 | 2018-03-30 | Bridge high pier climbing formwork lifting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113356573B (en) * | 2021-06-15 | 2022-08-19 | 中铁建工集团有限公司 | Sliding type lifting reversing box and using method thereof |
| CN113774802B (en) * | 2021-09-17 | 2023-01-24 | 黑龙江省龙建路桥第五工程有限公司 | Cast-in-place box girder edge protection structure and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2924626B2 (en) * | 1994-02-23 | 1999-07-26 | 鹿島建設株式会社 | Bridge pier construction method by self-elevating formwork method |
| CN103046472A (en) * | 2013-01-15 | 2013-04-17 | 中国土木工程集团有限公司 | Integral track formwork structure and using method thereof |
| CN106049863B (en) * | 2016-06-28 | 2018-10-09 | 上海建工集团股份有限公司 | The full-automatic tuning anti-fall device of link-type and its application method |
| CN106567333A (en) * | 2016-10-18 | 2017-04-19 | 贵州路桥集团有限公司 | Climbing device of hydraulic climbing formwork system and control method |
| CN206625546U (en) * | 2017-02-27 | 2017-11-10 | 广州达蒙安防科技有限公司 | A kind of hydraulic self-climbing mould climbing reverse box |
| CN107815971B (en) * | 2017-11-07 | 2019-03-08 | 中国十九冶集团有限公司 | High mound is from climbing hydraulic pressure mould system that turns over |
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