A steel tube arch bridge segment lifting device capable of adjusting the lifting posture

Abstract

The invention discloses a steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture, and relates to the technical field of steel tube arch bridge construction equipment; it comprises: a hoisting frame, which is used to connect the cable hoisting system; a horizontal adjustment frame, which is connected to the hoisting frame and can move laterally relative to the hoisting frame; a horizontal adjustment linear driver, one end of which is connected to the horizontal adjustment frame and the other end is connected to the hoisting frame, and the horizontal adjustment frame is driven to move relative to the hoisting frame by the telescopic movement of the horizontal adjustment linear driver; a hoisting assembly, which comprises a hoisting frame and a circumferential adjustment linear driver, the upper side of the hoisting frame is fixedly connected to one side of the horizontal adjustment frame, and the lower side is used to be hinged with an upper chord tube of the steel tube arch bridge segment to be installed, one end of the circumferential adjustment linear driver is hinged to the other side of the horizontal adjustment frame, and the other end is used to hoist another upper chord tube of the steel tube arch bridge segment to be installed; a limiting tool, which is connected to one side of the longitudinal direction of the hoisting frame and can limit the lateral movement of the hoisting frame. The invention can automatically adjust the hoisting posture of the steel tube arch bridge segment.

Description

Technical Field

[0001] The invention relates to the technical field of steel tube arch bridge construction equipment, and in particular to a steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture. Background Art

[0002] Steel tube arch bridge refers to a steel tube concrete arch bridge, whose arch part is made of steel tube trusses. In the prior art, the steel tube arch rib hoisting butt joint is connected by internal flange bolting and external pipe welding, and self-compacting shrinkage compensating concrete is poured into the upper and lower chord steel tubes of the arch rib. During construction, after the welding of the steel tube arch bridge segment is completed, it is usually hoisted from the steel platform to the installation station through a pre-set cable hoisting system, and then installed.

[0003] During the docking process of steel tube arch bridge segments, the four ports of the installed steel tube arch bridge segment connection end are required to be aligned one by one with the four ports of the steel tube arch bridge segment connection end to be installed, that is, circumferential and lateral alignment is required. However, the cable hoisting cable crane can only realize vertical lifting and longitudinal movement along the length of the cable, and alignment is often achieved through manual dragging. In addition, during the dragging process, the lifting posture of the steel tube arch bridge segment changes, and the center of gravity of the steel tube arch bridge segment is tilted, which not only has high labor intensity and low personnel safety (after the center of gravity of the steel tube arch bridge segment is tilted, corresponding pulling force or supporting force needs to be provided to keep the steel tube arch bridge segment in the adjusted posture), but also has low docking efficiency. Summary of the invention

[0004] Aiming at the technical problem that existing steel tube arch bridge segments need to be manually dragged for lateral alignment during hoisting and docking, the present invention provides a steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture, which can automatically adjust the hoisting posture of the steel tube arch bridge segment to reduce the labor intensity of hoisting the steel tube arch bridge segment and improve the docking efficiency and safety.

[0005] The present invention is achieved through the following technical solutions:

[0006] The present invention provides a steel pipe arch bridge segment hoisting device capable of adjusting the hoisting posture, comprising: a hoisting frame, the hoisting frame is used to connect the cable hoisting system; a horizontal adjustment frame, the horizontal adjustment frame is connected to the hoisting frame, and the horizontal adjustment frame can move horizontally relative to the hoisting frame; a horizontal adjustment linear driver, one end of the horizontal adjustment linear driver is connected to the horizontal adjustment frame and the other end is connected to the hoisting frame, and the horizontal adjustment frame is driven to move relative to the hoisting frame through the expansion and contraction of the horizontal adjustment linear driver; a hoisting assembly, the hoisting assembly includes a hoisting frame and a circumferential adjustment linear driver, the upper side of the hoisting frame It is fixedly connected to one side of the horizontal adjustment frame, and the lower side is used to be hinged to an upper chord tube of the steel tube arch bridge segment to be installed. One end of the circumferential adjustment linear driver is hinged to the other side of the horizontal adjustment frame, and the other end is used to hang another upper chord tube of the steel tube arch bridge segment to be installed; a limiting fixture is connected to one side of the longitudinal direction of the hanging frame, and the limiting fixture can limit the lateral movement of the hanging frame; wherein, in the process of the hanging frame lifting the steel tube arch bridge segment to be installed and moving it downward to the installation station, the limiting fixture can be clamped on the connecting end of the installed steel tube arch bridge segment.

[0007] The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture provided by the present invention comprises a hoisting frame, a transverse adjustment frame, a transverse adjustment linear driver, a hoisting assembly and a limiting fixture, wherein the transverse adjustment frame is connected to the hoisting frame, one end of the transverse adjustment linear driver is connected to the transverse adjustment frame, and the other end is connected to the hoisting frame, the limiting fixture is connected to one longitudinal side of the hoisting frame and limits the lateral movement of the hoisting frame, and in the process of the hoisting frame hoisting the steel tube arch bridge segment to be installed and moving it downward to the installation position, the limiting fixture is clamped on the connecting end of the installed steel tube arch bridge segment, and when in use, the hoisting frame and the cable hoisting system are connected. The cable of the system is connected, and one upper chord tube of the steel tube arch bridge segment to be installed is hinged to the lower side of the hanging frame, and the other upper chord tube is hung to the lower end of the circumferential linear drive. Then, the steel tube arch bridge segment to be installed is hoisted to the top of the connecting end of the installed steel tube arch bridge segment by the cable hoisting system, so that the lower part of the limiting fixture is directly opposite to the two upper chord tubes of the connecting end of the installed steel tube arch bridge segment. The steel tube arch bridge segment to be installed is lowered by the cable hoisting system, so that the limiting fixture is clamped on the connecting end of the installed steel tube arch bridge segment, so as to laterally limit the hanging frame by the limiting fixture.

[0008] Therefore, when it is necessary to adjust the steel tube arch bridge segment to be installed laterally, the horizontal adjustment frame can be driven to move relative to the hanging frame by the extension and retraction of the horizontal adjustment linear drive, so that the steel tube arch bridge segment can be automatically driven to move laterally; at the same time, since the upper side of the hanging frame is fixedly connected to one side of the horizontal adjustment frame, and the upper end of the circumferential adjustment linear drive is hinged to the other side of the horizontal adjustment frame, when it is necessary to adjust the circumferential posture of the steel tube arch bridge segment to be installed, the circumferential adjustment linear drive is extended and retracted to make the steel tube arch bridge segment rotate circumferentially around the lower side of the hanging frame, thereby adjusting the circumferential posture of the steel tube arch bridge segment to be installed. During the adjustment process, the limiting tooling provides tension or support force, so that the steel tube arch bridge segment maintains the adjusted posture, thereby avoiding the cable swing of the cable hoisting system when adjusting the posture of the steel tube arch bridge segment to be installed, which makes it difficult to align the butt joint, thereby reducing the labor intensity of hoisting the steel tube arch bridge segment and improving the butt joint efficiency and safety.

[0009] In summary, the steel tube arch bridge segment lifting device capable of adjusting the lifting posture provided by the present invention can automatically adjust the lifting posture of the steel tube arch bridge segment to reduce the labor intensity of lifting the steel tube arch bridge segment and improve the docking efficiency and safety.

[0010] In an optional embodiment, sliding slots are provided at both ends of the horizontal adjustment frame in the longitudinal direction, and the two sliding slots are respectively connected to the corresponding two sides of the hanging frame in the longitudinal direction to ensure that the horizontal adjustment frame can move relative to the hanging frame while ensuring the stability of the connection between the horizontal adjustment frame and the hanging frame.

[0011] In an optional embodiment, support rollers are provided on both side walls of the sliding slot, and a plurality of support rollers are arranged at intervals along the length direction of the sliding slot to convert the friction between the sliding slot and the hanging frame into rolling friction, thereby reducing the resistance when the horizontal adjustment frame moves.

[0012] In an optional embodiment, two lifting hoops are provided on the lower side of the lifting frame, and the two lifting hoops are longitudinally spaced apart, the upper ends of the lifting hoops are hinged to the lifting frame, and the lower ends are used to connect to the ends of the upper chord tubes corresponding to the steel tube arch bridge segment to be installed, so as to facilitate the hinge connection of the steel tube arch bridge segment to be installed with the lifting frame.

[0013] In an optional embodiment, the lifting frame includes a first lifting rod and a second lifting rod arranged vertically, the upper ends of the first lifting rod and the second lifting rod are used to be fixedly connected to the lifting frame, and the lower ends are respectively connected to the corresponding lifting hoops, and the length of the second lifting rod can be adjusted to adjust the longitudinal posture of the steel tube arch bridge segment to be installed by adjusting the second lifting rod. At the same time, it can also be adapted to steel tube arch bridge segments with different inclination angles / radians to ensure that all segments in the middle of the steel tube arch bridge can be lifted.

[0014] In an optional embodiment, the limiting tooling includes: a connecting frame, which is used to connect the hanging frame, and when the connecting frame is connected to the hanging frame, the connecting frame remains vertically arranged; a clamping hoop rod, which is installed at the lower part of the connecting frame, the open end of the clamping hoop rod faces downward, and the clamping hoop rod can be clamped on the outside of the mounting end of the installed steel tube arch bridge segment; a guide frame, which is installed at the lower part of the connecting frame, the guide frame is located in the middle of the opening of the clamping hoop rod, and the guide frame is a V-shaped structure; a damping limiting assembly, which is installed on the connecting frame, and the damping limiting assembly is located at the initial end of the sliding path of the hanging frame; wherein, under the action of the deadweight of the steel tube arch bridge segment, the mounting end of the steel tube arch bridge segment can be clamped between the clamping hoop rod and the lower end of the guide frame, and the hanging frame can overcome the damping of the damping limiting assembly and slide downward relative to the connecting frame.

[0015] When in use, the lifting frame is connected to the cable of the cable lifting system, and the connecting frame is installed on the lifting frame, and the connecting frame is kept in a vertical state (by setting the position of the cable connection between the lifting frame and the cable lifting system, the lifting frame is kept flush after the connecting frame is installed so that the connecting frame is kept vertical), and the steel tube arch bridge segment to be installed is lifted on the lifting frame by the cable, so that the cable lifting system is used to lift it vertically from the front of the connecting end of the installed steel tube arch bridge segment, and the steel tube arch bridge segment to be installed is lifted to the upper front of the connecting end of the installed steel tube arch bridge segment, and then the steel tube arch bridge segment to be installed is lifted to the top of the connecting end of the installed steel tube arch bridge segment by the cable lifting system, so that the lower part of the guide frame is directly opposite to the two upper chord tubes of the connecting end of the installed steel tube arch bridge segment, and the steel tube arch bridge segment to be installed is lowered by the cable lifting system.

[0016] Since the guide frame is V-shaped, installed at the bottom of the connecting frame and located in the middle of the opening of the clamping hoop rod, during the process of lowering the steel tube arch bridge segment to be installed by the cable lifting system, the lower end of the guide frame is first inserted between the two upper chord tubes of the connecting end of the installed steel tube arch bridge segment, and as the lowering proceeds, the side wall of the guide frame contacts the inner wall of the upper chord tube of the connecting end of the installed steel tube arch bridge segment, thereby playing a guiding role, so that the guide frame is self-centeringly inserted into the installed steel tube arch bridge segment until the clamping hoop rod is clamped outside the installation end of the steel tube arch bridge segment, thereby clamping the connecting frame on the installed steel tube arch bridge segment through the clamping hoop rod and the lower end of the guide frame, so as to provide guidance for the downward movement of the lifting frame through the connecting frame. After the connecting frame is clamped on the installed steel tube arch bridge segment, the hoisting frame is lowered further. Under the action of the gravity of the hoisting frame and the steel tube arch bridge segment to be installed, the connecting frame slides downward relative to the connecting frame, overcoming the damping of the damping limit assembly, and finally reaches the installation position.

[0017] Among them, during the process of lowering the connecting frame, since the guide frame is a V-shaped structure, its side wall conflicts with the inner wall of the upper chord tube of the connecting end of the installed steel tube arch bridge segment, so that the guide frame is self-centeringly inserted into the installed steel tube arch bridge segment, realizing the lateral rapid positioning of the lifting frame, which can reduce the workload of lateral posture adjustment of the steel tube arch bridge segment to be installed.

[0018] In an optional embodiment, the connecting frame is provided with: a limiting slide rail, two limiting slide rails are provided, and the two limiting slide rails are arranged on both sides of the connecting frame; a connecting slider, the connecting slider can be slidably clamped outside the two limiting slide rails, and the connecting slider is used to connect the hanging frame so that the hanging frame can only slide relative to the connecting frame, thereby avoiding the hanging frame from moving in other directions when adjusting the posture of the steel tube arch bridge segment.

[0019] In an optional embodiment, the upper end of the guide frame is provided with: a first clamping rod, the upper end of the first clamping rod is hinged to one side corresponding to the lower end of the connecting frame; a second clamping rod, the upper end of the second clamping rod is hinged to the other side corresponding to the lower end of the connecting frame, and the two ends of the pressure telescopic rod are respectively hinged to the lower ends of the first clamping rod and the second clamping rod; wherein, in the installed state, the pressure telescopic rod drives the lower ends of the first clamping rod and the second clamping rod to move relatively apart, so as to drive the first clamping rod and the second clamping rod and the clamping hoop rod to clamp the installed steel tube arch bridge segment through the pressure telescopic rod, thereby ensuring the stability of the connection between the connecting frame and the installed steel tube arch bridge segment.

[0020] In an optional embodiment, the pressure telescopic rod includes: a pressure sleeve, in which a compression spring is adapted; a first pushing rod, one end of which is hinged to one end of the connecting frame by the first clamping rod, and the other end is slidably inserted in the pressure sleeve; a second pushing rod, one end of which is hinged to one end of the connecting frame by the second clamping rod, and the other end is slidably inserted in the pressure sleeve, wherein, in a positioned state, the compression spring is squeezed by the first pushing rod and the second pushing rod to ensure that the pressure telescopic rod can contract when squeezed.

[0021] In an optional embodiment, two compression springs are provided, and two equalizing pistons are adapted in the pressure sleeve, the two equalizing pistons are located between the two compression springs, and the cavity between the two equalizing pistons is filled with hydraulic oil; the damping limit assembly includes a damping hydraulic cylinder, a damping piston rod and a damping block, the piston section of the damping piston rod is inserted in the damping hydraulic cylinder, the damping block is installed at the outer end of the damping piston rod, the side of the damping block away from the damping piston rod is a downward inclined surface, and the damping block is located on the sliding path of the connecting slider; wherein, the length direction of the damping piston rod is perpendicular to the length direction of the connecting frame, and the liquid outlet end of the damping hydraulic cylinder is connected to the cavity between the two equalizing pistons through a reversible one-way valve.

[0022] Therefore, when the connecting frame is clamped on the installation end of the installed steel tube arch bridge segment, the steel tube arch bridge segment to be installed is lowered by the crane, and under the action of the gravity of the steel tube arch bridge segment to be installed, the hanging frame slides downward relative to the connecting frame and squeezes the damping block at the same time, thereby squeezing the hydraulic oil in the damping hydraulic cylinder. At this time, the reversible one-way valve can damp the backflow of the hydraulic oil to pressurize the hydraulic oil in the sleeve, further compress the two compression springs, increase the squeezing force of the pressure telescopic rod on the first clamping rod and the second clamping rod, further improve the stability of the connection between the connecting frame and the installed steel tube arch bridge segment, and avoid shaking of the hanging frame when adjusting the posture of the steel tube arch bridge segment to be installed.

[0023] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0024] The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture provided by the present invention comprises a hoisting frame, a transverse adjustment frame, a transverse adjustment linear driver, a hoisting assembly and a limiting fixture, wherein the transverse adjustment frame is connected to the hoisting frame, one end of the transverse adjustment linear driver is connected to the transverse adjustment frame, and the other end is connected to the hoisting frame, the limiting fixture is connected to one longitudinal side of the hoisting frame and limits the lateral movement of the hoisting frame, and in the process of the hoisting frame lifting the steel tube arch bridge segment to be installed and moving it downward to the installation position, the limiting fixture is clamped on the connecting end of the installed steel tube arch bridge segment, and the transverse adjustment frame is driven by the expansion and contraction of the transverse adjustment linear driver. Relative to the movement of the hanging frame, the steel tube arch bridge segment can be automatically driven to move laterally. Through the extension and retraction of the circumferential adjustment linear drive, the steel tube arch bridge segment can be rotated circumferentially around the lower side of the hanging frame, thereby adjusting the circumferential posture of the steel tube arch bridge segment to be installed. During the adjustment process, the limiting tooling provides pulling force or supporting force, so that the steel tube arch bridge segment maintains the adjusted posture, thereby avoiding the cable swing of the cable lifting system and difficulty in aligning the butt joint when adjusting the posture of the steel tube arch bridge segment to be installed, thereby reducing the labor intensity of lifting the steel tube arch bridge segment and improving the butt joint efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] In the attached picture:

[0027] Figure 1 This is a front structural diagram of a steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture after being connected to a hoisting frame according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0029] Figure 3 It is a side structural diagram of the position limiting tooling according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic structural diagram of a pressure telescopic rod according to an embodiment of the present invention;

[0031] Figure 5 It is a structural schematic diagram of a damping and limiting assembly according to an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of the structure of a switchable one-way valve according to an embodiment of the present invention.

[0033] Marks and corresponding parts names in the attached drawings:

[0034] 100-hanging frame;

[0035] 200-limiting tooling, 210-connecting frame, 211-limiting slide rail, 212-connecting slider, 220-clamping rod, 230-guide frame, 231-first clamping rod, 232-second clamping rod, 240-pressure telescopic rod, 241-pressure sleeve, 242-compression spring, 243-first push rod, 244-second push rod, 245-equalizing piston, 250-damping limiting assembly, 251-damping hydraulic cylinder, 252-damping piston rod, 253-damping stopper, 260-reversible one-way valve, 261-reversing valve body, 262-reversing valve core, 263-one-way flow assembly;

[0036] 300-horizontal adjustment frame, 310-sliding card slot, 311-support roller;

[0037] 400-Horizontal adjustment linear drive;

[0038] 511 - a lifting collar, 512 - a first lifting rod, 513 - a second lifting rod, 520 - a circumferentially adjustable linear drive. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0040] In the description of the embodiments of the present application, the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is conventionally placed when in use, or is the orientation or position relationship conventionally understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0041] At the same time, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Example:

[0043] Combination Figure 1The present embodiment provides a steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture, comprising: a hoisting frame 100, the hoisting frame 100 is used to connect the cable hoisting system; a horizontal adjustment frame 300, the horizontal adjustment frame 300 is connected to the hoisting frame 100, and the horizontal adjustment frame 300 can move horizontally relative to the hoisting frame 100; a horizontal adjustment linear driver 400, one end of the horizontal adjustment linear driver 400 is connected to the horizontal adjustment frame 300 and the other end is connected to the hoisting frame 100, and the horizontal adjustment frame 300 is driven to move relative to the hoisting frame 100 through the expansion and contraction of the horizontal adjustment linear driver 400; a hoisting assembly, the hoisting assembly includes a hoisting frame and a circumferential adjustment linear driver 520 The upper side of the hanging frame is fixedly connected to one side of the horizontal adjustment frame 300, and the lower side is used to be hinged with an upper chord tube of the steel tube arch bridge segment to be installed. One end of the circumferential adjustment linear driver 520 is hinged to the other side of the horizontal adjustment frame 300, and the other end is used to hang another upper chord tube of the steel tube arch bridge segment to be installed; the limiting fixture 200 is connected to one side of the longitudinal direction of the hanging frame 100, and the limiting fixture 200 can limit the lateral movement of the hanging frame 100; wherein, in the process of the hanging frame 100 lifting the steel tube arch bridge segment to be installed and moving it downward to the installation station, the limiting fixture 200 can be clamped on the connecting end of the installed steel tube arch bridge segment.

[0044] Combination Figure 2 As a specific connection method between the horizontal adjustment frame 300 and the hanging frame 100: sliding grooves 310 are provided at both ends of the horizontal adjustment frame 300 in the longitudinal direction, and the two sliding grooves 310 are used to respectively clamp the corresponding two sides of the hanging frame 100 in the longitudinal direction, so as to ensure that the horizontal adjustment frame 300 can move relative to the hanging frame 100 while ensuring the stability of the connection between the horizontal adjustment frame 300 and the hanging frame 100.

[0045] Generally speaking, support rollers 311 are provided on both side walls of the sliding slot 310, and a plurality of support rollers 311 are arranged at intervals along the length direction of the sliding slot 310 to convert the friction between the sliding slot 310 and the hanging frame 100 into rolling friction, thereby reducing the resistance when the horizontal adjustment frame 300 moves.

[0046] The horizontal adjustment linear driver 400 is installed in the middle of the horizontal adjustment frame 300 to reduce the overall volume of the hoisting device. In this embodiment, the horizontal adjustment linear driver 400 is a lead screw driven by a motor, and the horizontal linear driver can be powered directly by a battery. Of course, a hydraulic cylinder can also be used as a linear driver. In this case, a hydraulic supply system needs to be installed on the hoisting frame 100.

[0047] Recombination Figure 1In order to facilitate the connection between the hanging frame and the hanging hoop 511, two hanging hoop 511 are arranged on the lower side of the hanging frame, and the two hanging hoop 511 are arranged at intervals in the longitudinal direction. The upper end of the hanging hoop 511 is hinged to the hanging frame, and the lower end is used to connect the end of the upper chord tube corresponding to the steel tube arch bridge segment to be installed, so as to facilitate the hinge connection of the steel tube arch bridge segment to be installed with the hanging frame.

[0048] In this embodiment, the hanging frame includes a first hanging rod 512 and a second hanging rod 513 which are vertically arranged. The upper ends of the first hanging rod 512 and the second hanging rod 513 are used to be fixedly connected to the hanging frame 100, and the lower ends are respectively connected to the corresponding hanging hoops 511, and the length of the second hanging rod 513 can be adjusted to adjust the longitudinal posture of the steel tube arch bridge segment to be installed by adjusting the second hanging rod 513. At the same time, it can also be adapted to steel tube arch bridge segments with different inclination angles / radians to ensure that all segments in the middle of the steel tube arch bridge can be hung.

[0049] The length of the second suspension rod 513 can be adjusted by dividing the second suspension rod 513 into two sections and screwing the two sections together. In this embodiment, a basket bolt is provided in the middle of the second suspension rod 513 to adjust the length of the second suspension rod 513 by rotating the basket cable, so as to quickly and accurately control the length of the second suspension rod 513.

[0050] Likewise, a hydraulic cylinder is usually used for the circumferentially adjustable linear actuator 520 to ensure that the circumferentially adjustable linear actuator 520 can provide sufficient torque.

[0051] Combination Figure 3 In this embodiment, the limiting tool 200 includes: a connecting frame 210, the connecting frame 210 is used to connect the hanging frame 100, and when the connecting frame 210 is connected to the hanging frame 100, the connecting frame 210 is kept in a vertical arrangement; a clamping hoop rod 220, the clamping hoop rod 220 is installed at the lower part of the connecting frame 210, the open end of the clamping hoop rod 220 faces downward, and the clamping hoop rod 220 can be clamped on the outside of the installation end of the installed steel pipe arch bridge segment; a guide frame 230, the guide frame 230 is installed at the lower part of the connecting frame 210, the guide frame 230 is installed at the lower part of the connecting frame 210, and the guide frame 230 is installed at the lower part of the connecting frame 210. The frame 230 is located in the middle of the opening of the clamping hoop rod 220, and the guide frame 230 is a V-shaped structure; the damping limit assembly 250 is installed on the connecting frame 210, and the damping limit assembly 250 is located at the initial end of the sliding path of the hanging frame 100; wherein, under the action of the deadweight of the steel tube arch bridge segment, the installation end of the steel tube arch bridge segment can be clamped between the clamping hoop rod 220 and the upper end of the guide frame 230, and the hanging frame 100 can overcome the damping of the damping limit assembly 250 and slide downward relative to the connecting frame 210.

[0052] Specifically, the connecting frame 210 is provided with: a limiting slide rail 211, and there are two limiting slide rails 211, which are respectively arranged on both sides of the connecting frame 210; a connecting slider 212, which can be slidably clamped outside the two limiting slide rails 211, and the connecting slider 212 is used to connect the hanging frame 100, so that the hanging frame 100 can only slide relative to the connecting frame 210, avoiding the hanging frame 100 from moving in other directions when adjusting the attitude of the steel pipe arch bridge segment. It can be understood that only limiting parts are provided at both ends of the limiting slide rail 211 to prevent the connecting slider 212 from slipping off the limiting slide rail 211.

[0053] For the clamping hoop rod 220, in this embodiment, the clamping hoop rod 220 is in a U shape with the opening facing downwards to ensure the stability when the connecting frame 210 clamps the installed steel pipe arch bridge segment.

[0054] Generally, a sliding pad is arranged on the outer side wall of the guiding frame 230, and the sliding pad is made of polytetrafluoroethylene to utilize the self-lubricating property of polytetrafluoroethylene to reduce the friction between the guiding frame 230 and the installed steel pipe arch bridge segment.

[0055] On this basis, the upper end of the guiding frame 230 is provided with: a first clamping rod 231, the upper end of the first clamping rod 231 is hinged to the corresponding side of the lower end of the connecting frame 210; a second clamping rod 232, the upper end of the second clamping rod 232 is hinged to the corresponding other side of the lower end of the connecting frame 210, and a pressure expansion rod 240, both ends of the pressure expansion rod 240 are respectively hinged to the lower ends of the first clamping rod 231 and the second clamping rod 232; wherein, in the installation state, the pressure expansion rod 240 drives the lower ends of the first clamping rod 231 and the second clamping rod 232 to move relatively away from each other, so as to drive the first clamping rod 231 and the second clamping rod 232 to clamp the installed steel pipe arch bridge segment through the pressure expansion rod 240, ensuring the stability of the connection between the connecting frame 210 and the installed steel pipe arch bridge segment.

[0056] Combined with Figure 4The pressure telescopic rod 240 includes: a pressure sleeve 241, in which a compression spring 242 is adapted; a first push rod 243, one end of the first push rod 243 is hinged to one end of the connecting frame 210 with the first clamping rod 231, and the other end is slidably inserted in the pressure sleeve 241; a second push rod 244, one end of the second push rod 244 is hinged to one end of the connecting frame 210 with the second clamping rod 232, and the other end is slidably inserted in the pressure sleeve 241, wherein, in the positioning state, the compression spring 242 is squeezed by the first push rod 243 and the second push rod 244 to ensure that the pressure telescopic rod 240 can shrink when squeezed.

[0057] Combination Figure 4 and Figure 5 In order to ensure the stability of the connection between the connecting frame 210 and the installed steel pipe arch bridge segment, in this embodiment, two compression springs 242 are provided, and two equalizing pistons 245 are adapted in the pressure sleeve 241. The two equalizing pistons 245 are located between the two compression springs 242, and the cavity between the two equalizing pistons 245 is filled with hydraulic oil; the damping limit assembly 250 includes a damping hydraulic cylinder 251, a damping piston rod 252 and a damping stopper 253, and the piston section of the damping piston rod 252 is inserted In the damping hydraulic cylinder 251, the damping stop block 253 is installed at the outer end of the damping piston rod 252, and the side of the damping stop block 253 away from the damping piston rod 252 is a downward inclined surface, and the damping stop block 253 is located on the sliding path of the connecting slider 212; wherein, the length direction of the damping piston rod 252 is perpendicular to the length direction of the connecting frame 210, and the liquid outlet end of the damping hydraulic cylinder 251 is connected to the cavity between the two equalizing pistons 245 through a reversible one-way valve 260.

[0058] Therefore, when the connecting frame 210 is clamped on the installation end of the installed steel tube arch bridge segment, the steel tube arch bridge segment to be installed is lowered by the crane. Under the action of the gravity of the steel tube arch bridge segment to be installed, the hanging frame 100 slides downward relative to the connecting frame 210, and at the same time squeezes the damping block 253, thereby squeezing the hydraulic oil in the damping hydraulic cylinder 251, and the hanging frame 100 continues to slide downward. At this time, the reversible one-way valve 260 can damp the backflow of the hydraulic oil to pressurize the hydraulic oil in the sleeve, further compress the two compression springs 242, and increase the squeezing force of the pressure telescopic rod 240 on the first clamping rod 231 and the second clamping rod 232, thereby further improving the stability of the connection between the connecting frame 210 and the installed steel tube arch bridge segment, and avoiding the shaking of the hanging frame 100 when adjusting the posture of the steel tube arch bridge segment to be installed.

[0059] Among them, the effective cross-sectional area of ​​the equalizing piston 245 is larger than the effective cross-sectional area of ​​the damping piston rod 252, so as to amplify the gravity of the steel tube arch bridge segment and the lifting frame on the pressure telescopic rod 240, and further ensure the stability of the connection between the connecting frame 210 and the installed steel tube arch bridge segment.

[0060] Combination Figure 6 The reversible one-way valve 260 includes: a reversing valve body 261, wherein the reversing valve body 261 is provided with a connecting passage; a reversing valve core 262, wherein the reversing valve core 262 is provided with a one-way flow component 263, and the one-way flow component 263 is arranged in the connecting passage to switch the conducting direction of the one-way flow component 263 by rotating the reversing valve core 262.

[0061] Preferably, the one-way flow component 263 is a ball one-way valve to ensure that the switchable one-way valve 260 has sufficient reliability.

[0062] It should be noted that the steel tube arch bridge segment lifting device capable of adjusting the lifting posture provided in this embodiment, when in use, connects the lifting frame 100 to the cable of the cable lifting system, and hinges one upper chord tube of the steel tube arch bridge segment to be installed to the lower side of the lifting frame, and lifts the other upper chord tube to the lower end of the circumferential linear drive 520, and then lifts the steel tube arch bridge segment to be installed to above the connecting end of the installed steel tube arch bridge segment through the cable lifting system, so that the lower part of the guide frame 230 is directly opposite to the two upper chord tubes of the connecting end of the installed steel tube arch bridge segment, and the steel tube arch bridge segment to be installed is lowered by the cable lifting system, so that the limiting fixture 200 is clamped on the connecting end of the installed steel tube arch bridge segment, so as to laterally limit the lifting frame 100 through the limiting fixture 200.

[0063] Since the guide frame 230 is V-shaped, installed at the lower part of the connecting frame 210 and located in the middle of the opening of the clamp rod 220, in the process of the cable lifting system lowering the steel tube arch bridge segment to be installed, the lower end of the guide frame 230 is first inserted between the two upper chord tubes of the connecting end of the installed steel tube arch bridge segment, and as the lowering proceeds, the side wall of the guide frame 230 contacts the inner wall of the upper chord tube of the connecting end of the installed steel tube arch bridge segment, thereby playing a guiding role, so that the guide frame 230 is self-centeringly inserted into the installed steel tube arch bridge segment.

[0064] Furthermore, as the guide frame 230 moves downward, the first clamping rod 231 and the second clamping rod 232 are clamped between the two upper chord tubes at the connecting end of the installed steel tube arch bridge segment, and the upper ends of the first clamping rod 231 and the second clamping rod 232 rotate inward, and the pressure telescopic rod 240 is compressed by the gravity of the hanging frame 100 and the steel tube arch bridge segment to be installed, so that the spring in the pressure telescopic rod 240 provides a reaction force, outputs a top pressure to the first clamping rod 231 and the second clamping rod 232, and clamps the installed steel tube arch bridge segment with the side wall corresponding to the clamping hoop rod 220, ensuring the stability of the connection between the connecting frame 210 and the installed steel tube arch bridge segment, until the bottom of the clamping hoop rod 220 is built outside the installation end of the steel tube arch bridge segment, limiting the connection frame 210 from continuing to move downward. Thus, the connecting frame 210 is clamped on the installed steel pipe arch bridge segment through the clamping hoop rod 220 and the lower end of the guide frame 230, so as to provide guidance for the downward movement of the hanging frame 100 through the connecting frame 210.

[0065] After the connecting frame 210 is clamped on the installed steel pipe arch bridge segment, the hoisting frame is further lowered. Under the gravity of the hoisting frame and the steel pipe arch bridge segment to be installed, the hoisting frame 100 slides downward relative to the connecting frame 210, and at the same time squeezes the damping block 253, thereby squeezing the hydraulic oil in the damping hydraulic cylinder 251, and the hoisting frame 100 continues to slide downward. At this time, the reversible one-way valve 260 can damp the hydraulic oil backflow to pressurize the hydraulic oil in the sleeve (the hydraulic oil is pressed into the pressure sleeve 241, and the damping piston rod 252 cannot move back under the action of friction), thereby further compressing the two compression springs 242, increasing the squeezing force of the pressure telescopic rod 240 on the first clamping rod 231 and the second clamping rod 232, further improving the stability of the connection between the connecting frame 210 and the installed steel pipe arch bridge segment, and avoiding the shaking of the hoisting frame 100 when adjusting the posture of the steel pipe arch bridge segment to be installed. When the steel tube arch bridge segment to be installed reaches the installation position, the cable hoisting system stops lowering the hoisting frame 100.

[0066] When adjusting the hoisting posture of the steel tube arch bridge segment to be installed, the upper chord tube connected to the steel tube arch bridge segment to be installed and the hoisting hoop 511 is adjusted with one end of the installed steel tube arch bridge segment as the reference (the end connected to the first hoisting rod), and the lateral posture adjustment is first performed, that is, the lateral adjustment frame 300 is driven to move relative to the hoisting frame 100 by the extension and contraction of the lateral adjustment linear driver 400 to automatically drive the steel tube arch bridge segment to move laterally, and the lateral hoisting posture is adjusted so that the reference end is aligned with the corresponding connection. Then the circumferential posture adjustment is performed, that is, the circumferential adjustment linear driver 520 is extended and contracted to make the steel tube arch bridge segment rotate circumferentially around the lower side of the hoisting frame so that the four ports are aligned one by one.

[0067] During the adjustment process, the limiting tool 200 provides a pulling force or a supporting force, so that the steel tube arch bridge segment maintains the adjusted posture, and does not cause the cable of the cable hoisting system to tilt or move up and down. In addition, the installed steel tube arch bridge segment is connected to the hanging frame 100 through the connecting frame 210, which limits the lateral and circumferential movement of the hanging frame 100, and avoids the cable of the cable hoisting system swinging and difficulty in aligning the butt joint when adjusting the posture of the steel tube arch bridge segment to be installed, thereby reducing the labor intensity of the steel tube arch bridge segment hoisting and improving the butt joint efficiency and safety.

[0068] Among them, during the lowering process of the connecting frame 210, since the guide frame 230 is a V-shaped structure, its side wall contacts the inner wall of the upper chord tube of the connecting end of the installed steel tube arch bridge segment, so that the guide frame 230 is self-centeringly inserted into the installed steel tube arch bridge segment, realizing the lateral rapid positioning of the lifting frame, which can reduce the workload of lateral posture adjustment of the steel tube arch bridge segment to be installed.

[0069] After the docking is completed, the steel pipe arch bridge segment is removed from the lifting frame 100, and then the lifting frame 100 is pulled up by the cable lifting system, and the lifting frame 100 moves up along the limit slide rail 211 under the action of the tension. When the connecting slider 212 slides over the damping block 253, the lifting of the lifting frame 100 is suspended, and the flow direction of the reversible one-way valve 260 is switched. At this time, the hydraulic oil in the pressure sleeve 241 flows back to the damping hydraulic cylinder 251 under the action of the rebound force of the two compression springs 242, driving the damping block 253 to reset, and reducing the pressure acting on the first clamping rod 231 and the second clamping rod 232. Then continue to pull up the lifting frame 100, so as to pull up the connecting frame 210 through the lifting frame 100, and remove the connecting frame 210 from the steel pipe arch bridge segment to carry out the lifting of the next segment.

[0070] In summary, the steel tube arch bridge segment lifting device capable of adjusting the lifting posture provided in this embodiment can automatically drive the steel tube arch bridge segment to move laterally, so as to reduce the labor intensity of lifting the steel tube arch bridge segment and improve the docking efficiency and safety.

[0071] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture, characterized in that: include: A hanging frame (100), the hanging frame (100) is used to connect the cable hanging system; A horizontal adjustment frame (300), the horizontal adjustment frame (300) is connected to the hanging frame (100), and the horizontal adjustment frame (300) can move horizontally relative to the hanging frame (100); A horizontal adjustment linear driver (400), one end of the horizontal adjustment linear driver (400) is connected to the horizontal adjustment frame (300), and the other end is connected to the hanging frame (100), and the horizontal adjustment frame (300) is driven to move relative to the hanging frame (100) through the extension and retraction of the horizontal adjustment linear driver (400); A hanging assembly, the hanging assembly comprising a hanging frame and a circumferentially adjustable linear actuator (520), the upper side of the hanging frame being fixedly connected to one lateral side of the lateral adjustment frame (300), and the lower side being used for being hinged to an upper chord tube of a steel tube arch bridge segment to be installed, one end of the circumferentially adjustable linear actuator (520) being hinged to the other lateral side of the lateral adjustment frame (300), and the other end being used for hanging another upper chord tube of the steel tube arch bridge segment to be installed; A limiting tool (200), the limiting tool (200) being connected to one side of the hanging frame (100) in the longitudinal direction, and the limiting tool (200) being capable of limiting the lateral movement of the hanging frame (100); In the process of the hoisting frame (100) lifting the steel tube arch bridge segment to be installed and moving it downward to the installation station, the limiting tool (200) can be clamped on the connection end of the installed steel tube arch bridge segment.

2. The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture according to claim 1 is characterized in that: Both ends of the horizontal adjustment frame (300) in the longitudinal direction are provided with sliding connection slots (310), and the two sliding connection slots (310) are respectively connected to the corresponding two sides in the longitudinal direction of the hanging frame (100).

3. The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture according to claim 2 is characterized in that: Support rollers (311) are provided on both side walls of the sliding card slot (310), and a plurality of the support rollers (311) are arranged at intervals along the length direction of the sliding card slot (310).

4. The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture according to claim 1 is characterized in that: Two hanging hoops (511) are arranged at the lower side of the hanging frame, and the two hanging hoops (511) are arranged at intervals in the longitudinal direction. The upper end of the hanging hoops (511) is hinged to the hanging frame, and the lower end is used to connect the end of the upper chord tube corresponding to the steel pipe arch bridge segment to be installed.

5. The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture according to claim 1 is characterized in that: The hanging frame comprises a first hanging rod (512) and a second hanging rod (513) which are arranged vertically, wherein the upper ends of the first hanging rod (512) and the second hanging rod (513) are fixedly connected to the hanging frame (100), and the lower ends are respectively connected to the corresponding hanging hoops (511), and the length of the second hanging rod (513) can be adjusted.

6. The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture according to claim 1 is characterized in that: The position limiting tool (200) comprises: A connecting frame (210), the connecting frame (210) being used to connect the hanging frame (100), and when the connecting frame (210) is connected to the hanging frame (100), the connecting frame (210) remains vertically arranged; A clamping hoop rod (220), the clamping hoop rod (220) being installed at the lower part of the connecting frame (210), the open end of the clamping hoop rod (220) facing downward, and the clamping hoop rod (220) being able to be clamped on the outside of the installation end of the installed steel pipe arch bridge segment; A guide frame (230), the guide frame (230) being installed at the lower part of the connecting frame (210), the guide frame (230) being located in the middle of the opening of the clamping hoop rod (220), and the guide frame (230) being a V-shaped structure; A damping and limiting assembly (250), wherein the damping and limiting assembly (250) is mounted on the connecting frame (210), and the damping and limiting assembly (250) is located at an initial end of a sliding path of the hanging frame (100); Wherein, under the action of the deadweight of the steel tube arch bridge segment, the installation end of the steel tube arch bridge segment can be clamped between the clamping rod (220) and the lower end of the guide frame (230), and the hanging frame (100) can overcome the damping of the damping limit assembly (250) and slide downward relative to the connecting frame (210).

7. The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture according to claim 6 is characterized in that: The connecting frame (210) is provided with: A limiting slide rail (211), wherein two limiting slide rails (211) are provided, and the two limiting slide rails (211) are respectively arranged on both sides of the connecting frame (210); A connecting slider (212) is slidably mounted outside the two limiting slide rails (211), and the connecting slider (212) is used to connect the hanging frame (100).

8. The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture according to claim 7, characterized in that: The upper end of the guide frame (230) is provided with: A first clamping rod (231), the upper end of the first clamping rod (231) being hinged to a side corresponding to the lower end of the connecting frame (210); A second clamping rod (232), the upper end of which is hinged to the other side of the lower end of the connecting frame (210) A pressure telescopic rod (240), wherein both ends of the pressure telescopic rod (240) are respectively hinged to the lower ends of the first clamping rod (231) and the second clamping rod (232); Wherein, in the installed state, the pressure telescopic rod (240) drives the lower ends of the first clamping rod (231) and the second clamping rod (232) to move relatively away from each other.

9. The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture according to claim 8, characterized in that: The pressure telescopic rod (240) comprises: A pressure sleeve (241), wherein a compression spring (242) is adapted to be disposed inside the pressure sleeve (241); A first pressing rod (243), one end of which is hinged to one end of the connecting frame (210) with the first clamping rod (231), and the other end of which is slidably inserted into the pressure sleeve (241); A second pressing rod (244), one end of the second pressing rod (244) is hinged to one end of the connecting frame (210) with the second clamping rod (232), and the other end is slidably inserted into the pressure sleeve (241); Wherein, in the positioning state, the compression spring (242) is squeezed by the first pressing rod (243) and the second pressing rod (244).

10. The steel tube arch bridge segment hoisting device capable of adjusting the hoisting posture according to claim 9, characterized in that: Two compression springs (242) are provided, and two equalizing pistons (245) are adapted to be arranged in the pressure sleeve (241), the two equalizing pistons (245) are located between the two compression springs (242), and the cavity between the two equalizing pistons (245) is filled with hydraulic oil; The damping limit assembly (250) comprises a damping hydraulic cylinder (251), a damping piston rod (252) and a damping stopper (253); the piston section of the damping piston rod (252) is inserted into the damping hydraulic cylinder (251); the damping stopper (253) is installed at the outer end of the damping piston rod (252); a side of the damping stopper (253) away from the damping piston rod (252) is a downwardly inclined slope, and the damping stopper (253) is located on the sliding path of the connecting slider (212); The length direction of the damping piston rod (252) is perpendicular to the length direction of the connecting frame (210), and the liquid outlet end of the damping hydraulic cylinder (251) is connected to the cavity between the two equalizing pistons (245) through a reversible one-way valve (260).

Images