CN112267386B - Pushing device and steel box girder pushing method - Google Patents
Pushing device and steel box girder pushing method Download PDFInfo
- Publication number
- CN112267386B CN112267386B CN202011303241.5A CN202011303241A CN112267386B CN 112267386 B CN112267386 B CN 112267386B CN 202011303241 A CN202011303241 A CN 202011303241A CN 112267386 B CN112267386 B CN 112267386B
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- jacking
- sliding seat
- connecting part
- axial sliding
- guide rail
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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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
Abstract
The invention provides a pushing device and a steel box girder pushing method, which comprise a base, a longitudinal driving hydraulic cylinder and a plurality of sets of jacking assemblies, wherein each set of jacking assembly comprises an axial sliding seat, a set of jacking hydraulic cylinders, a set of transverse deviation rectifying hydraulic cylinders, a connecting plate, a transverse sliding seat and a plurality of one-way rollers, the base is provided with a guide rail groove, the axial sliding seat is arranged on the guide rail groove of the base in a sliding manner, the axial sliding seat is fixedly provided with a set of jacking hydraulic cylinders, the execution end of the jacking hydraulic cylinders of the same set of jacking assemblies is fixedly connected with the connecting plate, the transverse sliding seat is arranged on the connecting plate in a horizontal sliding manner, and the moving direction of the transverse sliding seat is vertical to the moving direction of the axial sliding seat. The invention solves the problems that the construction platform is built and removed, the pushing equipment needs to reciprocate in the pushing process, and the construction efficiency is influenced because the temporary cushion block needs to be additionally arranged to complete pushing in the traditional steel box girder pushing method.
Description
Technical Field
The invention belongs to the technical field of road and bridge construction, and particularly relates to a pushing device and a steel box girder pushing method.
Background
The pushing construction method is a construction method that a beam body is poured or assembled section by section on an embankment behind a bridge abutment and is longitudinally pushed by a pushing device so that the beam body is in place through temporary sliding devices on pier tops. The working principle of the pushing construction method can be described by three main links of periodic operation, namely pouring or assembling a concrete beam section on a fixed field behind a bridge abutment, tensioning permanent and temporary prestressed reinforcements, and jacking a beam body section by means of a pushing device arranged on the bridge abutment close to the beam section pre-field or at the beam bottom of a support and a sliding device arranged on each pier support or temporary buttress. In the construction process, a pushing construction platform needs to be built on each pier stud, pushing equipment is installed on the construction platform, the pushing equipment needs to move back and forth to achieve erection of a section of the steel box girder on the pier stud, and a temporary cushion block needs to be additionally arranged to complete pushing, so that the construction efficiency is affected.
Disclosure of Invention
The invention provides pushing equipment and a steel box girder pushing method, aiming at solving the problems that a construction platform is built and removed, the pushing equipment needs to do reciprocating motion in the pushing process, a temporary cushion block needs to be additionally arranged to complete pushing, and the construction efficiency is influenced in the existing steel box girder pushing method, and efficient pushing is realized by arranging a jacking assembly, a base, a longitudinal driving hydraulic cylinder and the like.
The specific implementation content of the invention is as follows:
the invention provides a pushing device, which comprises a base, a longitudinal driving hydraulic cylinder and two groups of jacking components,
guide rail grooves are respectively formed in the left side and the right side of the upper end surface of the base, two groups of jacking assemblies are respectively arranged on the guide rail grooves, and one group of jacking assemblies comprise axial sliding seats which can be arranged on the guide rail grooves in a back-and-forth sliding mode, jacking hydraulic cylinders arranged on the axial sliding seats and connecting plates arranged at the upper ends of the jacking hydraulic cylinders; the jacking assembly also comprises a transverse sliding seat and a plurality of groups of unidirectional rollers arranged on the transverse sliding seat; the transverse sliding seat slides on the sliding rail of the connecting plate along the direction vertical to the movement direction of the axial sliding seat;
the jacking assembly also comprises deviation-correcting hydraulic cylinders arranged on two sides of the upper end surface of the connecting plate;
the jacking assembly further comprises a connecting rod connected to the axial sliding seats, and the longitudinal driving hydraulic cylinder is connected with the axial sliding seats on the left side and the right side through the connecting rod respectively.
In order to better realize the invention, the jacking assembly is further provided with anti-falling supporting components, the jacking hydraulic cylinders are arranged in two groups on the left and right sides of the upper end surface of the axial sliding seat, the anti-falling supporting components are arranged between the two groups of jacking hydraulic cylinders and comprise a square cylindrical upper connecting part arranged on the lower end surface of the connecting plate, a square strip-shaped lower connecting part which can be movably arranged in the inner cylinder of the upper connecting part in an up-and-down mode and the bottom end of the lower connecting part is connected with the axial sliding seat, a locking part which is connected with the lower connecting part and used for locking and fixing the lower connecting part is further arranged in the upper connecting part, and an unlocking component which is arranged on the upper connecting part and used for controlling the locking and fixing of the lower connecting part by matching with the locking part is further arranged.
In order to better realize the invention, the lock parts are symmetrically arranged in two groups in the inner cylinder of the upper connecting part left and right, and comprise a cam-shaped body arranged in the inner cylinder of the upper connecting part and round teeth arranged on the base circle surface of the body and connected with the lower connecting part;
the side surface of the lower connecting part is provided with insections meshed with the circular teeth on the locking part;
the unlocking component comprises a rotating shaft penetrating through the upper connecting part and the locking part, a gear fixedly arranged at one end of the rotating shaft, and a handle fixedly arranged at the other end of the rotating shaft; the rotating shaft is fixedly connected with the locking part;
and two gears arranged on the left side and the right side of the upper connecting part are meshed with each other.
In order to better implement the present invention, further, the portion of the axial sliding seat mounted in the guide rail groove is provided with a roller, and the roller is arranged on the side surface or/and the bottom surface of the portion of the axial sliding seat mounted in the guide rail groove.
In order to better realize the invention, two groups of longitudinal driving hydraulic cylinders are further arranged and are respectively connected with the axial sliding seats on the guide rail grooves at two sides through connecting rods.
In order to better realize the invention, further, the longitudinal driving hydraulic cylinder comprises a cylinder body, two ends of the cylinder body are respectively provided with a driving rod which is inserted into the cylinder body and connected with a connecting rod, and one end of the driving rod inserted into the cylinder body is also provided with a piston;
the cylinder body is also provided with an oil inlet and two oil outlets.
The invention also provides a pushing device, which comprises a base, a longitudinal driving hydraulic cylinder and four groups of jacking components,
guide rail grooves are respectively formed in the left side and the right side of the upper end face of the base, the jacking assemblies are arranged on the guide rail grooves in a pairwise manner, each group of jacking assemblies is respectively arranged on the guide rail grooves, and one group of jacking assemblies comprises an axial sliding seat which is arranged on the guide rail grooves in a reciprocating sliding manner, a jacking hydraulic cylinder which is arranged on the axial sliding seat and a connecting plate which is arranged at the upper end of the jacking hydraulic cylinder; the jacking assembly also comprises a transverse sliding seat and a plurality of groups of unidirectional rollers arranged on the transverse sliding seat; the transverse sliding seat slides on the sliding rail of the connecting plate along the direction vertical to the movement direction of the axial sliding seat;
the jacking assembly also comprises deviation-correcting hydraulic cylinders arranged on two sides of the upper end surface of the connecting plate;
the jacking assembly further comprises a connecting rod connected to the axial sliding seats, and the longitudinal driving hydraulic cylinder is connected with the axial sliding seats on the left side and the right side through the connecting rod respectively.
In order to better realize the invention, the jacking assembly is further provided with anti-falling supporting components, the jacking hydraulic cylinders are arranged in two groups on the left and right sides of the upper end surface of the axial sliding seat, the anti-falling supporting components are arranged between the two groups of jacking hydraulic cylinders and comprise a square cylindrical upper connecting part arranged on the lower end surface of the connecting plate and a square strip-shaped lower connecting part which can be movably arranged in the inner cylinder of the upper connecting part in an up-and-down mode, the bottom end of the square strip-shaped lower connecting part is connected with the axial sliding seat, a locking part which is connected with the lower connecting part and is used for locking and fixing the lower connecting part is also arranged in the upper connecting part, and an unlocking component which is arranged on the upper connecting part and is used for controlling the locking and fixing of the lower connecting part by matching with the locking part is also arranged;
the lock parts are symmetrically arranged in two groups in the inner cylinder of the upper connecting part left and right, and comprise cam-shaped bodies arranged in the inner cylinder of the upper connecting part and round teeth arranged on the base circular surface of the bodies and connected with the lower connecting part;
the side surface of the lower connecting part is provided with insections meshed with the circular teeth on the locking part;
the unlocking component comprises a rotating shaft penetrating through the upper connecting part and the locking part, a gear fixedly arranged at one end of the rotating shaft, and a handle fixedly arranged at the other end of the rotating shaft; the rotating shaft is fixedly connected with the locking part;
two gears 3 arranged on the left side and the right side of the upper connecting part are mutually meshed;
the roller wheels are arranged on the parts of the axial sliding seats, which are arranged in the guide rail grooves, and the roller wheels are arranged on the side surfaces or/and the bottom surfaces of the parts of the axial sliding seats, which are arranged in the guide rail grooves.
In order to better realize the invention, the longitudinal driving hydraulic cylinders are arranged in one group, two axial sliding seats on the guide rail groove on the left side are respectively provided with a connecting rod, and the two connecting rods on the left side are connected and then are connected with the left side of the longitudinal driving hydraulic cylinder; two axial sliding seats on the guide rail groove on the right side are also respectively provided with a connecting rod, and the two connecting rods on the right side are connected and then are jointly connected with the right side of the longitudinal driving hydraulic cylinder;
the longitudinal driving hydraulic cylinder comprises a cylinder body, two ends of the cylinder body are respectively provided with a driving rod which is inserted into the cylinder body and connected with a connecting rod, and one end of the driving rod inserted into the cylinder body is also provided with a piston;
the cylinder body is also provided with an oil inlet and two oil outlets.
The invention also provides a steel box girder pushing method, and the pushing device is used for pushing.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the base is fixed on the bridge pier, and the two jacking assemblies in the same set of jacking assemblies are symmetrically arranged on two sides of the bridge pier, when jacking, the two sets of jacking assemblies simultaneously move towards the outer side or the inner side of the bridge pier, so that the stress of the bridge pier is uniformly offset, and simultaneously when the two sets of jacking assemblies move towards the outer side or the inner side of the bridge pier, the jacking of the steel box girder is uninterrupted, so that the construction efficiency is improved. The problems that a traditional pushing device needs to be provided with a pushing construction platform and the efficiency is low due to continuous pushing can be solved.
Drawings
FIG. 1 is a front elevational view of the apparatus of the present invention without the longitudinal drive cylinder;
FIG. 2 is a side view of the pusher in example 1;
FIG. 3 is a top view of the pushing apparatus of example 1;
FIG. 4 is a side view of the pusher of example 2;
FIG. 5 is a top view of the pusher of example 2;
FIG. 6 is a partial schematic view of the axial sliding seat of the present invention installed in the guide rail groove;
FIG. 7 is a schematic cross-sectional view of a fall arrest support member of the present invention;
FIG. 8 is a top view of a fall arrest support member of the present invention;
fig. 9 is a sectional structure diagram of the longitudinal driving hydraulic cylinder.
Wherein: 100. the device comprises a base 200, a longitudinal driving hydraulic cylinder 201, a cylinder body 202, a driving rod 203, a piston 300, a jacking assembly 301, an axial sliding seat 302, a jacking hydraulic cylinder 303, a deviation rectifying hydraulic cylinder 304, a connecting plate 305, a transverse sliding seat 306, a connecting rod 307, a one-way roller 308, a roller 400, a falling prevention supporting component 401, an upper connecting part 402, a lower connecting part 403, a locking part 404, an unlocking component 4041, a rotating shaft 4042, a handle 4043 and a gear.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and therefore should not be considered as a limitation to the scope of protection. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
the embodiment of the present invention provides a pushing apparatus, as shown in fig. 1, 2 and 3, comprising a base 100, a longitudinal driving hydraulic cylinder 200 and two sets of jacking assemblies 300,
each set of jacking assembly 300 comprises an axial sliding seat 301, a set of jacking hydraulic cylinders 302, a set of transverse deviation rectifying hydraulic cylinders 303, a connecting plate 304, a transverse sliding seat 305 and a plurality of one-way rollers 307, a guide rail groove is arranged on the base 100, the axial sliding seat 301 is arranged on the guide rail groove of the base 100 in a sliding manner, the axial sliding seat 301 is fixedly provided with a set of jacking hydraulic cylinders 302, the execution end of the jacking hydraulic cylinders 302 of the same set of jacking assembly 300 is fixedly connected with the connecting plate 304, the transverse sliding seat 305 is arranged on the connecting plate 304 in a horizontal sliding manner, the moving direction of the transverse sliding seat 305 is vertical to the moving direction of the axial sliding seat 301, the connecting plate 304 is provided with a set of transverse deviation rectifying hydraulic cylinders 303 for driving the transverse sliding seat 305 to move on the connecting plate 304, the transverse sliding seat 305 is provided with a plurality of one-way rollers 307, and the axial sliding seats 301 on the two sets of jacking assemblies 300 are driven by the longitudinal driving hydraulic cylinders 200, the lifting device moves along the guide rail groove on the base 100 in opposite directions, and the rotation directions of the plurality of unidirectional rollers 307 on the two sets of lifting assemblies 300 are the same;
when each jacking assembly 300 moves towards the opposite direction of the jacking movement, the plurality of one-way rollers 307 on the jacking assembly 300 rotate.
Example 2:
the embodiment further provides a jacking device, as shown in fig. 1, 4 and 5, comprising a base 100, a longitudinal driving hydraulic cylinder 200 and two sets of jacking assemblies 300, wherein each set of jacking assembly 300 comprises two sets of jacking assemblies 300,
each set of jacking assembly 300 comprises an axial sliding seat 301, a set of jacking hydraulic cylinders 302, a set of transverse deviation rectifying hydraulic cylinders 303, a connecting plate 304, a transverse sliding seat 305, a connecting rod 306 and a plurality of one-way rollers 307, a guide rail groove is arranged on the base 100, the axial sliding seat 301 is arranged on the guide rail groove of the base 100 in a sliding manner, a set of jacking hydraulic cylinders 302 is fixedly arranged on the axial sliding seat 301, an execution end of each jacking hydraulic cylinder 302 of the same set of jacking assembly 300 is fixedly connected with the connecting plate 304, the transverse sliding seat 305 is arranged on the connecting plate 304 in a horizontal sliding manner, the moving direction of the transverse sliding seat 305 is vertical to the moving direction of the axial sliding seat 301, a set of transverse deviation rectifying hydraulic cylinders 303 are arranged on the connecting plate 304 to drive the transverse sliding seat 305 to move on the connecting plate 304, a plurality of one-way rollers 307 are arranged on the transverse sliding seat 305, and one end of the connecting rod 306 is hinged with the axial sliding seat 301, the other ends of the two connecting rods 306 on the same group of jacking assemblies 300 are hinged with each other, and the four connecting rods 306 on the two groups of jacking assemblies 300 are hinged with the execution end of the longitudinal driving hydraulic cylinder 200; under the drive of the longitudinal driving hydraulic cylinder 200, two sets of jacking assemblies 300 on the same set of jacking assemblies 300 move in opposite directions along the guide rail grooves on the base 100, and the rotation directions of a plurality of one-way rollers 307 on the four sets of jacking assemblies 300 are the same;
when each jacking assembly 300 in each set of jacking assembly 300 moves towards the opposite direction of the jacking movement, the plurality of one-way rollers 307 on the jacking assembly 300 rotate.
Other parts of this embodiment are the same as those of embodiment 1, and thus are not described again.
Example 3:
in this embodiment, on the basis of any of the above embodiments 1-2, in order to reduce the friction force of the axial sliding seat 301 in the guide groove of the base 100, as shown in fig. 6, a guide rail is processed at the bottom of the axial sliding seat 301, and a roller 308 is rotatably disposed on the bottom surface and the outer side surface of the guide rail.
The one-way roller 307 in this embodiment belongs to the prior art, and may be the same as the one-way roller structure described in the patent specification with application number 200920085308.5, and the rotation of the roller is limited by a ratchet and a spring key, which will not be described herein again.
As shown in fig. 2 and 3, in embodiment 1 or embodiment 2, the number of the jacking hydraulic cylinders 302 in each set of jacking assembly 300 can be 2 or 4.
Other parts of this embodiment are the same as any of embodiments 1-2 described above, and thus are not described again.
Example 4:
on the basis of any one of embodiments 1 to 3, as shown in fig. 7, the anti-falling support device 400 further includes an anti-falling support device 400, where the anti-falling support device 400 includes an upper connection portion 401, a lower connection portion 402, a lock portion 403, and an unlocking portion 404, where a plurality of teeth are provided on the lower connection portion 402, the lower connection portion 402 is fixed on an axial sliding seat 301 of each set of jacking assembly 300 in each set of jacking assembly 300, the upper connection portion 401 is fixed with a connection plate 304 of each set of jacking assembly 300 in each set of jacking assembly 300, the upper connection portion 401 is rotatably provided with the lock portion 403, the lock portion 403 is provided with a plurality of teeth, the teeth on the lock portion 403 are mutually matched with the teeth on the lower connection portion 402, and the lock portion 403 is connected by the unlocking portion 404;
when the jacking hydraulic cylinders 302 on each set of jacking assembly 300 jack the connecting plates 304 upwards, the teeth on the locking parts 403 are disengaged from the teeth on the lower connecting parts 402;
when the jacking hydraulic cylinders 302 on each set of jacking assembly 300 jack up the connecting plates 304 upwards and then lose jacking force and fall back, the teeth on the locking parts 403 are meshed with the teeth on the lower connecting parts 402, and the locking parts 403 are attached to the upper connecting parts 401 and are in a clamping state;
when the lock portion 403 is in the locked state, the lock portion 403 is locked by contact with the unlocking member 404, and the teeth on the lock portion 403 are disengaged from the teeth on the lower connecting portion 402.
Oil pipe bursts appear in jacking hydraulic cylinder 302 jacking in-process, can not the during operation, for preventing that the steel box girder jacking in-process from whereabouts, sets up the supporting component 400 that prevents falling to provide interim support, prevent that the steel box girder whereabouts from causing the accident, the effect that plays the support when jacking hydraulic cylinder 302 is out of work in the work progress simultaneously.
By rotating the handle 4042, the teeth on the lock portion 403 are disengaged from the teeth on the lower attachment portion 402.
Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.
Example 5:
in this embodiment, on the basis of any one of the above embodiments 1 to 4, as shown in fig. 7 and 8, in order to enable the jacking hydraulic steel 302 in a normal working state to fall back, an unlocking component 404 is provided, where the unlocking component 404 includes a rotating shaft 4041 and a handle 4042, the locking portion 403 is fixedly connected with the rotating shaft 4041, the rotating shaft 4041 is rotatably provided on the upper connecting portion 401, and the end of the rotating shaft 4041 is fixedly provided with the handle 4042;
the number of the locking portions 403 is 2, and the locking portions are symmetrically arranged on two sides of the lower connecting portion 402;
when the number of the lock portions 403 is 2, the unlocking component 404 includes a handle 4042, two rotating shafts 4041 and two gears 4043, each lock portion 403 is fixedly connected to each rotating shaft 4041, each rotating shaft 4041 is rotatably disposed on the upper connecting portion 401, one gear 4043 is fixedly disposed on each rotating shaft 4041, the two gears 4043 are engaged with each other, and the handle 4042 is fixedly disposed at the end of one rotating shaft 4041. By rotating the handle 4042, the two lock portions 403 can be simultaneously disengaged from the teeth on the lower connecting portion 402;
optionally, the lower connecting portion 402 is a rack;
alternatively, the lock part 403 is cam-shaped, and teeth are arranged on the base circle surface of the lock part 403, and the number of the teeth is 2-3;
other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.
Example 6:
in this embodiment, on the basis of any one of the above embodiments 1-5, in order to better implement the present invention, further, as shown in fig. 9, the longitudinal driving hydraulic cylinder 200 includes a cylinder body 201 and two driving rods 202 with pistons 203, the two pistons 203 are slidably disposed in the cylinder body 201 and axially move, the two driving rods 202 are coaxially disposed, and the cylinder body 201 is provided with an oil inlet and two oil outlets.
In order to make two sets of jacking assemblies 300 in the same set run synchronously and reduce control ports of executing parts, a longitudinal driving hydraulic cylinder 200 which moves bidirectionally at the same time is arranged, oil is supplied to an oil inlet through a pipeline during feeding, and oil is returned from two oil outlets. When the two driving rods 202 retract, the oil inlet becomes an oil outlet, and the oil outlet becomes an oil inlet.
Other parts of this embodiment are the same as any of embodiments 1 to 5, and thus are not described again.
Example 7:
the embodiment also provides a steel box girder pushing method, the steel box girder is pushed by the pushing device, when the steel box girder is positioned right above the pushing equipment, the plurality of one-way rollers 307 are jacked up by the jacking hydraulic cylinder 302 and attached to the bottom of the steel box girder, the two sets of jacking assemblies 300 are driven to move in opposite directions by the longitudinal driving hydraulic cylinder 200, wherein the one-way rollers 307 in the same advancing direction as the steel box girder do not rotate and provide static friction force to enable the steel box girder to move forwards, the one-way rollers 307 in the opposite advancing direction of the steel box girder rotate and provide supporting function, and when the steel box girder is pushed to deviate, the transverse deviation correction is carried out by the transverse deviation correcting hydraulic cylinder 303.
Other parts of this embodiment are the same as any of embodiments 1 to 6, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A thrusting device is characterized by comprising a base (100), a longitudinal driving hydraulic cylinder (200) and two groups of jacking components (300),
guide rail grooves are respectively formed in the left side and the right side of the upper end surface of the base (100), two groups of jacking assemblies (300) are respectively arranged on the guide rail grooves, and one group of jacking assemblies (300) comprises an axial sliding seat (301) which can be arranged on the guide rail grooves in a back-and-forth sliding manner, a jacking hydraulic cylinder (302) which is arranged on the axial sliding seat (301), and a connecting plate (304) which is arranged at the upper end of the jacking hydraulic cylinder (302); the jacking assembly (300) further comprises a transverse sliding seat (305) and a plurality of groups of unidirectional rollers (307) arranged on the transverse sliding seat (305); a slide rail is arranged on the connecting plate (304), and the transverse sliding seat (305) slides on the slide rail of the connecting plate (304) along the direction vertical to the movement direction of the axial sliding seat (301);
the jacking assembly (300) further comprises deviation rectifying hydraulic cylinders (303) arranged on two sides of the upper end face of the connecting plate (304);
the jacking assembly (300) further comprises a connecting rod (306) connected to the axial sliding seat (301), and the longitudinal driving hydraulic cylinder (200) is connected with the left and right axial sliding seats (301) through the connecting rod (306).
2. The thrusting device of claim 1, wherein the jacking assembly (300) is further provided with a fall-protection support member (400), the jacking hydraulic cylinders (302) are arranged in two groups at the left and right sides of the two sides of the upper end surface of the axial sliding seat (301), the anti-falling supporting component (400) is arranged between the two groups of jacking hydraulic cylinders (302), comprises a square cylindrical upper connecting part (401) arranged on the lower end surface of the connecting plate (304), and also comprises a square bar-shaped lower connecting part (402) which can be movably arranged in the inner cylinder of the upper connecting part (401) up and down and the bottom end of which is connected with the axial sliding seat (301), a locking part (403) which is connected with the lower connecting part (402) and is used for locking and fastening the lower connecting part (402) is also arranged in the upper connecting part (401), and the locking part is also arranged on the upper connecting part (401), and an unlocking member (404) for controlling the locking of the lower connecting part (402) by the lock part (403) in cooperation with the lock part (403).
3. A thruster in accordance with claim 2, characterized in that the locking portions (403) are arranged in two sets in bilateral symmetry in the inner cylinder of the upper connecting part (401), comprising a cam-shaped body mounted in the inner cylinder of the upper connecting part (401), and on the base circular surface of the body, circular teeth connected to the lower connecting part (402);
the side surface of the lower connecting part (402) is provided with insections meshed with the round teeth on the locking part (403);
the unlocking part (404) comprises a rotating shaft (4041) penetrating through the upper connecting part (401) and the lock part (403), a gear (4043) fixedly installed at one end of the rotating shaft (4041), and a handle (4042) fixedly installed at the other end of the rotating shaft (4041); the rotating shaft (4041) is fixedly connected with the lock part (403);
and two gears (4043) arranged on the left and right sides of the upper connecting part (401) are meshed with each other.
4. A thruster in accordance with claim 1, characterized in that the axial slide holder (301) is provided with rollers (308) at the location where it is mounted in the guide groove, said rollers (308) being provided at the side and/or bottom of the location where the axial slide holder (301) is mounted in the guide groove.
5. The thrustor according to claim 1, wherein two sets of longitudinal driving hydraulic cylinders (200) are provided, each connected to the axial sliding seat (301) of the guideway grooves on both sides by a connecting rod (306).
6. The thrustor according to claim 5, wherein the longitudinal driving hydraulic cylinder (200) comprises a cylinder body (201), two ends of the cylinder body (201) are respectively provided with a driving rod (202) inserted into the cylinder body (201) and connected with the connecting rod (306), and one end of the driving rod (202) inserted into the cylinder body (201) is further provided with a piston (203);
the cylinder body (201) is also provided with an oil inlet and two oil outlets.
7. A thrusting device is characterized by comprising a base (100), a longitudinal driving hydraulic cylinder (200) and four groups of jacking assemblies (300),
guide rail grooves are respectively formed in the left side and the right side of the upper end face of the base (100), every two jacking assemblies (300) are arranged on the guide rail grooves in a one-to-one manner, each group of jacking assemblies (300) is arranged on the guide rail groove, one group of jacking assemblies (300) comprises an axial sliding seat (301) which can be arranged on the guide rail grooves in a back-and-forth sliding manner, a jacking hydraulic cylinder (302) which is arranged on the axial sliding seat (301), and a connecting plate (304) which is arranged at the upper end of the jacking hydraulic cylinder (302); the jacking assembly (300) further comprises a transverse sliding seat (305) and a plurality of groups of unidirectional rollers (307) arranged on the transverse sliding seat (305); a slide rail is arranged on the connecting plate (304), and the transverse sliding seat (305) slides on the slide rail of the connecting plate (304) along the direction vertical to the movement direction of the axial sliding seat (301);
the jacking assembly (300) further comprises deviation rectifying hydraulic cylinders (303) arranged on two sides of the upper end face of the connecting plate (304);
the jacking assembly (300) further comprises a connecting rod (306) connected to the axial sliding seat (301), and the longitudinal driving hydraulic cylinder (200) is connected with the left and right axial sliding seats (301) through the connecting rod (306).
8. The thrusting device of claim 7, wherein the jacking assembly (300) is further provided with a fall-protection support member (400), the jacking hydraulic cylinders (302) are arranged in two groups at the left and right sides of the two sides of the upper end surface of the axial sliding seat (301), the anti-falling supporting component (400) is arranged between the two groups of jacking hydraulic cylinders (302), comprises a square cylindrical upper connecting part (401) arranged on the lower end surface of the connecting plate (304), and also comprises a square bar-shaped lower connecting part (402) which can be movably arranged in the inner cylinder of the upper connecting part (401) up and down and the bottom end of which is connected with the axial sliding seat (301), a locking part (403) which is connected with the lower connecting part (402) and is used for locking and fastening the lower connecting part (402) is also arranged in the upper connecting part (401), and the locking part is also arranged on the upper connecting part (401), an unlocking member (404) for controlling the locking and fixing of the lower connecting portion (402) by the lock portion (403) in cooperation with the lock portion (403);
the lock parts (403) are arranged in two groups in the inner cylinder of the upper connecting part (401) in a left-right symmetrical mode and comprise a cam-shaped body installed in the inner cylinder of the upper connecting part (401) and round teeth connected with the lower connecting part (402) and arranged on the base circle surface of the body;
the side surface of the lower connecting part (402) is provided with insections meshed with the round teeth on the locking part (403);
the unlocking part (404) comprises a rotating shaft (4041) penetrating through the upper connecting part (401) and the lock part (403), a gear (4043) fixedly installed at one end of the rotating shaft (4041), and a handle (4042) fixedly installed at the other end of the rotating shaft (4041); the rotating shaft (4041) is fixedly connected with the lock part (403);
two gears (4043) arranged on the left side and the right side of the upper connecting part (401) are meshed with each other;
the roller (308) is arranged on the part of the axial sliding seat (301) installed in the guide rail groove, and the roller (308) is arranged on the side surface or/and the bottom surface of the part of the axial sliding seat (301) installed in the guide rail groove.
9. The thrustor of claim 7, wherein the longitudinal driving hydraulic cylinders (200) are provided in a group, two axial sliding seats (301) on the left guide rail groove are respectively provided with a connecting rod (306), and the two connecting rods (306) on the left side are connected and then jointly connected with the left side of the longitudinal driving hydraulic cylinder (200); two axial sliding seats (301) on the right side guide rail groove are also respectively provided with a connecting rod (306), and the two connecting rods (306) on the right side are connected and then are connected with the right side of the longitudinal driving hydraulic cylinder (200);
the longitudinal driving hydraulic cylinder (200) comprises a cylinder body (201), two ends of the cylinder body (201) are respectively provided with a driving rod (202) which is inserted into the cylinder body (201) and connected with a connecting rod, and one end of the driving rod (202) inserted into the cylinder body (201) is also provided with a piston (203);
the cylinder body (201) is also provided with an oil inlet and two oil outlets.
10. A steel box girder jacking method characterized in that jacking is performed by using the jacking device of any one of claims 1 to 9.
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| CN113430933A (en) * | 2021-08-06 | 2021-09-24 | 盐城市兴都市政工程建设有限公司 | Concrete continuous beam cable-stayed bridge longitudinal deviation correcting device |
| CN114703766A (en) * | 2022-05-12 | 2022-07-05 | 南京西部路桥集团有限公司 | Pushing device applied to steel box girder and bidirectional pushing construction method thereof |
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