Transverse adjusting mechanism for hoisting postures of steel tube arch bridge sections

Abstract

The utility model discloses a steel tube arch bridge segment hoisting posture transverse adjusting mechanism, and relates to the technical field of steel tube arch bridge construction equipment. Comprising a transverse adjusting frame which is used for connecting a hanging frame and a to-be-installed steel tube arch bridge section, and the transverse adjusting frame can transversely move relative to the hanging frame after being connected to the hanging frame; one end of the transverse adjustment linear driver is connected with the transverse adjustment frame, the other end of the transverse adjustment linear driver is used for being connected with a hanging frame, and the transverse adjustment frame is driven to move relative to the hanging frame through stretching and retracting of the transverse adjustment linear driver; the limiting tool is used for being connected with one longitudinal side of the lifting frame, and the limiting tool can limit transverse movement of the lifting frame; wherein in the process that the hoisting frame hoists the to-be-mounted steel tube arch bridge section to move downwards to the mounting station, the limiting tool can be clamped to the connecting end of the mounted steel tube arch bridge section. The device can automatically drive the steel tube arch bridge section to transversely move.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe arch bridge construction equipment, in particular to a transverse adjustment mechanism for the hoisting attitude of steel pipe arch bridge segments. Background Technique

[0002] A steel pipe arch bridge refers to a concrete-filled steel pipe arch bridge, and its arch part is spliced by steel pipe trusses. In the prior art, the hoisting docking joints of the steel pipe arch ribs are connected in the form of internal flange bolt connection and external pipe welding, and self-compacting compensated shrinkage concrete is poured into the upper and lower chord steel pipes of the arch ribs. During construction, after the welding of the steel pipe arch bridge segments is completed, they are usually hoisted from the steel platform upwards to the installation position through a pre-set cable hoisting system and then installed. During the docking process of the steel pipe arch bridge segments, transverse alignment is required. However, the cable hoisting crane of the cable hoisting system can only achieve vertical lifting and longitudinal movement along the length of the cable, and often manual dragging is used to achieve alignment. Moreover, during the dragging process, after the steel pipe arch bridge segment generates a transverse displacement, the cable tilts, and the crane needs to cooperate to adjust the length of the cable. This not only has a large labor intensity and low personnel safety (after the cable tilts, a lateral tensile force needs to be provided to keep the steel pipe arch bridge segment in the adjusted attitude), but also has a low docking efficiency. Content of the Utility Model

[0003] Aiming at the technical problem that manual dragging is required for transverse alignment during the hoisting and docking of existing steel pipe arch bridge segments; the utility model provides a transverse adjustment mechanism for the hoisting attitude of steel pipe arch bridge segments, which can automatically drive the transverse movement of the steel pipe arch bridge segments to reduce the labor intensity of hoisting the steel pipe arch bridge segments and improve the docking efficiency and safety.

[0004] The utility model is realized through the following technical solutions:

[0005] The utility model provides a transverse adjustment mechanism for the hoisting attitude of steel pipe arch bridge segments, including: a transverse adjustment frame, the transverse adjustment frame is used to connect the hoisting frame and the steel pipe arch bridge segment to be installed, and after the transverse adjustment frame is connected to the hoisting frame, it can move transversely relative to the hoisting frame; a transverse adjustment linear driver, one end of the transverse adjustment linear driver is connected to the transverse adjustment frame and the other end is used to be connected to the hoisting frame, and the transverse adjustment frame moves relative to the hoisting frame through the expansion and contraction of the transverse adjustment linear driver; a limiting tooling, the limiting tooling is used to be connected to one longitudinal side of the hoisting frame, and the limiting tooling can limit the transverse movement of the hoisting frame; wherein, during the process of the hoisting frame hoisting the steel pipe arch bridge segment to be installed and moving downwards to the installation position, the limiting tooling can be clamped on the connection end of the already installed steel pipe arch bridge segment.

[0006] The transverse adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment provided by the utility model includes a transverse adjustment frame, a transverse linear driver, and a limiting tooling. The transverse adjustment frame is used to connect the hoisting frame and the steel pipe arch bridge segment to be installed. One end of the transverse linear driver is connected to the transverse adjustment frame, and the other end is used to be connected to the hoisting frame. The limiting tooling is used to connect to one longitudinal side of the hoisting frame and limit the transverse movement of the hoisting frame. Moreover, during the process of the hoisting frame hoisting the steel pipe arch bridge segment to be installed and moving downward to the installation station, the limiting tooling is clamped to the connection end of the already installed steel pipe arch bridge segment. When in use, the transverse adjustment frame is installed on the hoisting frame, the hoisting frame is connected to the cable hoisting system, and the steel pipe arch bridge segment to be installed is hoisted and connected to the transverse adjustment frame through a hoisting cable. Then, the steel pipe arch bridge segment to be installed is hoisted above the connection end of the already installed steel pipe arch bridge segment by the cable hoisting system, so that the limiting tooling is directly opposite to the space between the two upper chord pipes of the connection end of the already installed steel pipe arch bridge segment. The steel pipe arch bridge segment to be installed is lowered by the cable hoisting system, thereby clamping the limiting tooling to the connection end of the already installed steel pipe arch bridge segment to horizontally limit the hoisting frame through the limiting tooling.

[0007] Thus, when it is necessary to horizontally adjust the steel pipe arch bridge segment to be installed, the transverse adjustment frame is driven to move relative to the hoisting frame through the expansion and contraction of the transverse linear driver, and the steel pipe arch bridge segment can be automatically driven to move horizontally. During the adjustment process, a horizontal pulling force is provided by the limiting tooling, so that the steel pipe arch bridge segment maintains the adjusted attitude. At the same time, the already installed steel pipe arch bridge segment is connected to the hoisting frame through a connecting frame, which also limits the circumferential movement of the hoisting frame, thereby avoiding the swaying of the cables of the cable hoisting system and making it difficult to align the docking joints when adjusting the attitude of the steel pipe arch bridge segment to be installed, thus reducing the labor intensity of hoisting the steel pipe arch bridge segment and improving the docking efficiency and safety.

[0008] In summary, the transverse adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment provided by the utility model can automatically drive the horizontal movement of the steel pipe arch bridge segment to reduce the labor intensity of hoisting the steel pipe arch bridge segment and improve the docking efficiency and safety.

[0009] In an optional embodiment, sliding slots are provided at both longitudinal ends of the transverse adjustment frame, and the two sliding slots are used to respectively clamp the corresponding two longitudinal sides of the hoisting frame to ensure the relative movement of the transverse adjustment frame relative to the hoisting frame while ensuring the stability of the connection between the transverse adjustment frame and the hoisting frame.

[0010] In an optional embodiment, support rollers are provided on both side walls inside the sliding slots. The support rollers are arranged at intervals along the length direction of the sliding slots to convert the friction between the sliding slots and the hoisting frame into rolling friction and reduce the resistance when the transverse adjustment frame moves.

[0011] In an alternative embodiment, the transverse adjustment linear driver is installed in the middle of the transverse adjustment frame to facilitate reducing the overall volume of the hoisting device.

[0012] In an alternative embodiment, the transverse adjustment linear driver is a lead screw driven by a motor, and the transverse linear driver can be directly powered by a storage battery.

[0013] In an alternative embodiment, the limit tooling includes: a connecting frame for connecting the hanging frame, and when the connecting frame is connected to the hanging frame, the connecting frame remains vertically arranged; a clamping hoop rod installed at the lower part of the connecting frame, with the open end of the clamping hoop rod facing downwards, and the clamping hoop rod can be clamped outside the installation end of the installed steel pipe arch bridge segment; a guiding frame installed at the lower part of the connecting frame, the guiding frame is located in the middle of the opening of the clamping hoop rod, and the guiding frame is a V-shaped structure; a damping limit component installed on the connecting frame, and the damping limit component is located at the initial end of the sliding path of the hanging frame; wherein, under the action of the self-weight of the steel pipe arch bridge segment, the installation end of the steel pipe arch bridge segment can be clamped between the lower ends of the clamping hoop rod and the guiding frame, and the hanging frame can slide down relative to the connecting frame against the damping of the damping limit component.

[0014] During use, the hoisting frame is connected to the cable of the cable hoisting system, the connecting frame is installed on the hanging frame, and the connecting frame is kept in a vertical state (by setting the position of the connection between the hoisting frame and the cable of the cable hoisting system, the hoisting frame after installing the connecting frame is kept level so that the connecting frame is vertical), the steel pipe arch bridge segment to be installed is hoisted on the hoisting frame through the cable, and is vertically hoisted from the front of the connection end of the installed steel pipe arch bridge segment through the cable hoisting system, the steel pipe arch bridge segment to be installed is hoisted to the upper front of the connection end of the installed steel pipe arch bridge segment, and then the steel pipe arch bridge segment to be installed is hoisted to the upper part of the connection end of the installed steel pipe arch bridge segment through the cable hoisting system, so that the lower part of the guiding frame is directly opposite to the two upper chord pipes between the connection ends of the installed steel pipe arch bridge segment, and the steel pipe arch bridge segment to be installed is lowered by the cable hoisting system.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] In an alternative embodiment, the pressure telescopic rod includes: a pressure sleeve, in which a compression spring is fitted; a first pressing rod, one end of the first pressing rod is hinged to one end of the first clamping rod to the connecting frame, and the other end is slidably inserted into the pressure sleeve; a second pressing rod, one end of the second pressing rod is hinged to one end of the second clamping rod to the connecting frame, and the other end is slidably inserted into the pressure sleeve. Wherein, in the positioning state, the compression spring is squeezed by the first pressing rod and the second pressing rod to ensure that the pressure telescopic rod can contract when being squeezed.

[0020] In an alternative embodiment, there are two compression springs, and two pressure equalizing pistons are fitted in the pressure sleeve. The two pressure equalizing pistons are located between the two compression springs, and the cavity between the two pressure equalizing pistons is filled with hydraulic oil; the damping and limiting assembly includes a damping hydraulic cylinder, a damping piston rod and a damping block. The piston section of the damping piston rod is inserted into the damping hydraulic cylinder, and 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 an inclined surface sloping downwards, 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 communicated with the cavity between the two pressure equalizing pistons through a reversible one-way valve.

[0021] Thus, when the connecting frame is clamped on the installation end of the already installed steel pipe arch bridge section, by lowering the steel pipe arch bridge section to be installed by a crane, under the action of the self-weight of the steel pipe arch bridge section to be installed, the hanging frame slides down relative to the connecting frame, and at the same time squeezes the damping block, thereby squeezing the hydraulic oil in the damping hydraulic cylinder. At this time, the reversible one-way valve can prevent the hydraulic oil from flowing back, so as to pressurize the hydraulic oil in the sleeve, further compress the two compression springs, increase the extrusion force of the pressure telescopic rod on the first clamping rod and the second clamping rod, and further improve the stability of the connection between the connecting frame and the already installed steel pipe arch bridge section, and avoid the hanging frame from shaking when adjusting the attitude of the steel pipe arch bridge section to be installed.

[0022] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0023] The transverse adjustment mechanism for the hoisting attitude of a steel pipe arch bridge segment provided by the present utility model includes a transverse adjustment frame, a transverse linear driver, and a limit tooling. The transverse adjustment frame is used to connect the hoisting frame and the steel pipe arch bridge segment to be installed. One end of the transverse linear driver is connected to the transverse adjustment frame, and the other end is used to be connected to the hoisting frame. The limit tooling is used to connect to one longitudinal side of the hoisting frame and limit the transverse movement of the hoisting frame. Moreover, during the process of the hoisting frame hoisting the steel pipe arch bridge segment to be installed and moving downward to the installation station, the limit tooling is clamped to the connection end of the already installed steel pipe arch bridge segment. Thus, when it is necessary to transversely adjust the steel pipe arch bridge segment to be installed, by the telescopic movement of the transverse linear driver to drive the transverse adjustment frame to move relative to the hoisting frame, the steel pipe arch bridge segment can be automatically driven to move transversely. During the adjustment process, a transverse pulling force is provided by the limit tooling, so that the steel pipe arch bridge segment maintains the adjusted attitude. And, by connecting the already installed steel pipe arch bridge segment and the hoisting frame through a connecting frame, the circumferential movement of the hoisting frame is also limited, thereby avoiding the swinging of the cable of the cable hoisting system and making it difficult to align the docking joint when adjusting the attitude of the steel pipe arch bridge segment to be installed, reducing the labor intensity of the hoisting of the steel pipe arch bridge segment, and improving the docking efficiency and safety. Brief Description of the Drawings

[0024] 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 some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0025] In the drawings:

[0026] Figure 1 It is the front view structure diagram after the transverse adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment in the embodiment of the present utility model is connected to the hoisting frame;

[0027] Figure 2 It is Figure 1 The enlarged structure schematic diagram of part A;

[0028] Figure 3 It is the side view structure diagram of the limit tooling in the embodiment of the present utility model;

[0029] Figure 4 It is the structure schematic diagram of the pressure telescopic rod in the embodiment of the present utility model;

[0030] Figure 5 It is the structure schematic diagram of the damping limit component in the embodiment of the present utility model;

[0031] Figure 6 It is the structure schematic diagram of the reversible one-way valve in the embodiment of the present utility model.

[0032] Marks in the attached drawings and corresponding component names:

[0033] 100 - Suspension frame, 200 - Positioning tooling, 210 - Connecting frame, 211 - Positioning slide rail, 212 - Connecting slider, 220 - Clamping hoop rod, 230 - Guide frame, 231 - First clamping rod, 232 - Second clamping rod, 240 - Pressure telescopic rod, 241 - Pressure sleeve, 242 - Compression spring, 243 - First pressing rod, 244 - Second pressing rod, 245 - Pressure equalizing piston, 250 - Damping positioning component, 251 - Damping hydraulic cylinder, 252 - Damping piston rod, 253 - Damping stop block, 260 - Reversible check valve, 261 - Reversing valve body, 262 - Reversing valve core, 263 - Unidirectional flow component, 300 - Horizontal adjustment frame, 310 - Sliding slot, 311 - Support roller, 400 - Horizontal linear drive Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the embodiments of this application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing this 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 should not be construed as a limitation to this application.

[0036] At the same time, the terms "arranged", "installed", "connected", and "coupled" 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 a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] Embodiment:

[0038] Combined with Figure 1, this embodiment provides a transverse adjustment mechanism for the hoisting attitude of a steel pipe arch bridge segment, including: a transverse adjustment frame 300, which is used to connect the hoisting frame 100 and the steel pipe arch bridge segment to be installed, and the transverse adjustment frame 300 can move laterally relative to the hoisting frame 100 after being connected to the hoisting frame 100; a transverse adjustment linear driver 400, one end of which is connected to the transverse adjustment frame 300 and the other end is used to be connected to the hoisting frame 100, and the transverse adjustment frame 300 is driven to move relative to the hoisting frame 100 by the expansion and contraction of the transverse adjustment linear driver 400; a limiting tooling 200, which is used to be connected to one side of the longitudinal direction of the hoisting frame 100, and the limiting tooling 200 can limit the lateral movement of the hoisting frame 100; wherein, during the process that the hoisting frame 100 hoists the steel pipe arch bridge segment to be installed and moves downward to the installation station, the limiting tooling 200 can be clamped on the connection end of the already installed steel pipe arch bridge segment.

[0039] Combined with Figure 2 , as a specific connection method between the transverse adjustment frame 300 and the hoisting frame 100: sliding connection slots 310 are arranged at both longitudinal ends of the transverse adjustment frame 300, and the two sliding connection slots 310 are used to respectively clamp the corresponding two sides of the longitudinal direction of the hoisting frame 100, so as to ensure the relative movement of the transverse adjustment frame 300 relative to the hoisting frame 100 while ensuring the connection stability between the transverse adjustment frame 300 and the hoisting frame 100.

[0040] Generally speaking, support rollers 311 are arranged on both inner side walls of the sliding connection slot 310, and a plurality of support rollers 311 are arranged at intervals along the length direction of the sliding connection slot 310, so as to convert the friction between the sliding connection slot 310 and the hoisting frame 100 into rolling friction and reduce the resistance when the transverse adjustment frame 300 moves.

[0041] Among them, the transverse adjustment linear driver 400 is installed in the middle of the transverse adjustment frame 300 to facilitate reducing the overall volume of the hoisting device. In this embodiment, the transverse adjustment linear driver 400 is a lead screw driven by a motor, and the transverse linear driver can be directly powered by a storage battery. Of course, a hydraulic cylinder can also be used as the linear driver. At this time, a hydraulic supply system needs to be installed on the hoisting frame 100.

[0042] Combined with Figure 3, in this embodiment, the limit tooling 200 includes: a connecting frame 210, the connecting frame 210 is used to connect the suspension frame 100, and when the connecting frame 210 is connected to the suspension frame 100, the connecting frame 210 remains vertically arranged; 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 downwards, and the clamping hoop rod 220 can be clamped outside the installation end of the installed steel pipe arch bridge segment; a guiding frame 230, the guiding frame 230 is installed at the lower part of the connecting frame 210, the guiding frame 230 is located in the middle of the opening of the clamping hoop rod 220, and the guiding frame 230 is a V-shaped structure; a damping limit component 250, the damping limit component 250 is installed on the connecting frame 210, and the damping limit component 250 is located at the initial end of the sliding path of the suspension frame 100; wherein, under the action of the self-weight of the steel pipe arch bridge segment, the installation end of the steel pipe arch bridge segment can be clamped between the clamping hoop rod 220 and the upper end of the guiding frame 230, and the suspension frame 100 can slide downward relative to the connecting frame 210 against the damping of the damping limit component 250.

[0043] Specifically, the connecting frame 210 is provided with: limit sliding rails 211, there are two limit sliding rails 211, and the two limit sliding rails 211 are respectively arranged on both sides of the connecting frame 210; connecting sliders 212, the connecting sliders 212 can be slidably clamped outside the two limit sliding rails 211, and the connecting sliders 212 are used to connect the suspension frame 100, so that the suspension frame 100 can only slide relative to the connecting frame 210, avoiding the suspension frame 100 moving in other directions when adjusting the posture of the steel pipe arch bridge segment. It can be understood that there are only limit parts at both ends of the limit sliding rails 211 to prevent the connecting sliders 212 from slipping off the limit sliding rails 211.

[0044] For the clamping hoop rod 220, in this embodiment, the clamping hoop rod 220 is a U-shaped with the opening facing downwards to ensure the stability when the connecting frame 210 clamps the installed steel pipe arch bridge segment.

[0045] Generally speaking, a sliding pad is arranged on the outer side wall of the guiding frame 230, and the sliding pad is made of polytetrafluoroethylene, so as 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.

[0046] 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 one side corresponding to 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 other side corresponding to the lower end of the connecting frame 210; a pressure telescopic rod 240, 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, so as to drive the first clamping rod 231 and the second clamping rod 232 to clamp the installed steel tube arch bridge segment through the pressure telescopic rod 240, ensuring the stability of the connection between the connecting frame 210 and the installed steel tube arch bridge segment.

[0047] Combined with Figure 4 , the pressure telescopic rod 240 includes: a pressure sleeve 241, a compression spring 242 is fitted inside the pressure sleeve 241; a first pressing rod 243, one end of the first pressing rod 243 is hinged to one end of the first clamping rod 231 opposite to the connecting frame 210, and the other end 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 second clamping rod 232 opposite to the connecting frame 210, and the other end is slidably inserted into the pressure sleeve 241, wherein, in the positioned state, the compression spring 242 is squeezed by the first pressing rod 243 and the second pressing rod 244 to ensure that the pressure telescopic rod 240 can contract when being squeezed.

[0048] Combined with Figure 4 and Figure 5 , to ensure the stability of the connection between the connecting frame 210 and the installed steel tube arch bridge segment, in this embodiment, two compression springs 242 are provided, and two pressure equalizing pistons 245 are fitted inside the pressure sleeve 241. The two pressure equalizing pistons 245 are located between the two compression springs 242, and the cavity between the two pressure equalizing pistons 245 is filled with hydraulic oil; the damping limiting assembly 250 includes a damping hydraulic cylinder 251, a damping piston rod 252 and a damping block 253. The piston section of the damping piston rod 252 is inserted into the damping hydraulic cylinder 251, the damping block 253 is installed at the outer end of the damping piston rod 252, the side of the damping block 253 away from the damping piston rod 252 is an inclined surface sloping downward, and the damping 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 communicated with the cavity between the two pressure equalizing pistons 245 through a reversible one-way valve 260.

[0049] Thus, 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 a crane. Under the action of the self-weight 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 reflux of the hydraulic oil to pressurize the hydraulic oil in the sleeve, further compressing the two compression springs 242, increasing the extrusion force of the pressure telescopic rod 240 acting on the first clamping rod 231 and the second clamping rod 232, and further improving the stability of the connection between the connecting frame 210 and the installed steel tube arch bridge segment, avoiding the hanging frame 100 from shaking when adjusting the attitude of the steel tube arch bridge segment to be installed.

[0050] Wherein, the effective cross-sectional area of the pressure equalizing piston 245 is larger than the effective cross-sectional area of the piston of the damping piston rod 252 to amplify the gravity of the steel tube arch bridge segment and the lifting frame and act on the pressure telescopic rod 240, further ensuring the stability of the connection between the connecting frame 210 and the installed steel tube arch bridge segment.

[0051] Combined with Figure 6 , the reversible one-way valve 260 includes: a reversing valve body 261 provided with a communication channel; a reversing valve core 262 provided with a one-way flow component 263, and the one-way flow component 263 is arranged in the communication channel to switch the conduction direction of the one-way flow component 263 by rotating the reversing valve core 262.

[0052] Preferably, the one-way flow component 263 is a ball-type one-way valve to ensure sufficient reliability of the reversible one-way valve 260.

[0053] It should be noted that for the lateral adjustment mechanism of the hoisting attitude of the steel tube arch bridge segment provided in this embodiment, during use, the horizontal adjustment frame 300 is installed on the hanging frame 100, the hanging frame 100 is connected to the cable hoisting system, and the steel tube arch bridge segment to be installed is hoisted on the horizontal adjustment frame 300 by a suspension cable. Then, the steel tube arch bridge segment to be installed is hoisted above the connection end of the installed steel tube arch bridge segment by the cable hoisting system, so that the lower part of the guiding frame 230 is directly opposite to the space between the two upper chord tubes at the connection 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, and thus the limiting tooling 200 is clamped on the connection end of the installed steel tube arch bridge segment to horizontally limit the hanging frame 100 through the limiting tooling 200.

[0054] 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 clamping hoop rod 220, during the process of the cable hoisting system lowering the steel pipe arch bridge segment to be installed, the lower end of the guide frame 230 first inserts between the two upper chord pipes at the connecting end of the already installed steel pipe arch bridge segment. As the lowering progresses, the side wall of the guide frame 230 abuts against the inner side wall of the upper chord pipe at the connecting end of the already installed steel pipe arch bridge segment, thus playing a guiding role and enabling the guide frame 230 to self-align and insert into the already installed steel pipe arch bridge segment.

[0055] Moreover, 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 pipes at the connecting end of the already installed steel pipe arch bridge segment, and the upper ends of the first clamping rod 231 and the second clamping rod 232 rotate inward. By the gravity of the hanging frame 100 and the steel pipe arch bridge segment to be installed, the pressure expansion rod 240 is compressed, so that the spring in the pressure expansion rod 240 provides a reaction force, outputs a jacking pressure to the first clamping rod 231 and the second clamping rod 232, and clamps the already installed steel pipe 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 already installed steel pipe arch bridge segment until the bottom of the clamping hoop rod 220 is placed outside the installation end of the steel pipe arch bridge segment, restricting the further downward movement of the connecting frame 210. Thus, the connecting frame 210 is clamped on the already installed steel pipe arch bridge segment through the bottom of 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.

[0056] After the connecting frame 210 is clamped on the already installed steel pipe arch bridge segment, the hanging frame is continuously lowered. Under the action of the self-gravity of the hanging frame and the steel pipe 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, thus squeezing the hydraulic oil in the damping hydraulic cylinder 251, and the hanging frame 100 continues to slide downward. At this time, the normally-closed one-way valve 260 can prevent the hydraulic oil from flowing back, so as 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 extrusion force of the pressure expansion rod 240 acting 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 already installed steel pipe arch bridge segment, and preventing the hanging frame 100 from shaking when adjusting the attitude of the steel pipe arch bridge segment to be installed. When the steel pipe arch bridge segment to be installed reaches the installation position, the cable hoisting system stops lowering the hanging frame 100.

[0057] When it is necessary to horizontally adjust the segment of the steel pipe arch bridge to be installed, the telescopic movement of the horizontal adjustment linear driver 400 drives the horizontal adjustment frame 300 to move relative to the suspension frame 100, so as to automatically drive the horizontal movement of the segment of the steel pipe arch bridge. During the adjustment process, a horizontal tension force is provided by the limit tooling 200, so that the segment of the steel pipe arch bridge maintains the adjusted posture and does not cause the cables of the cable hoisting system to tilt or move up and down.

[0058] Among them, during the lowering process of the connecting frame 210, since the guiding frame 230 is of a V-shaped structure, the side wall thereof abuts against the inner side wall of the upper chord pipe of the connecting end of the already installed segment of the steel pipe arch bridge, so that the guiding frame 230 is self-centered and inserted into the already installed segment of the steel pipe arch bridge, realizing the rapid horizontal positioning of the hoisting frame and reducing the workload of horizontal posture adjustment of the segment of the steel pipe arch bridge to be installed.

[0059] In addition, the already installed segment of the steel pipe arch bridge is connected to the suspension frame 100 through the connecting frame 210, restricting the horizontal and circumferential movements of the suspension frame 100, avoiding the swinging of the cables of the cable hoisting system and making it difficult to align the docking joints when adjusting the posture of the segment of the steel pipe arch bridge to be installed, thereby reducing the labor intensity of hoisting the segment of the steel pipe arch bridge and improving the docking efficiency and safety.

[0060] After the docking is completed, the segment of the steel pipe arch bridge is unloaded from the suspension frame 100, and then the suspension frame 100 is pulled up by the cable hoisting system. Under the action of the tension force, the suspension frame 100 moves upward along the limit slide rail 211. When the connecting slider 212 slides past the damping block 253, the upward pulling of the suspension frame 100 is paused, 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 into the damping hydraulic cylinder 251 under the action of the resilience 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, the suspension frame 100 is pulled up continuously to pull up the connecting frame 210 through the suspension frame 100 and remove the connecting frame 210 from the segment of the steel pipe arch bridge for hoisting the next segment.

[0061] In summary, the horizontal adjustment mechanism for the hoisting posture of the segment of the steel pipe arch bridge provided by this embodiment can automatically drive the horizontal movement of the segment of the steel pipe arch bridge, so as to reduce the labor intensity of hoisting the segment of the steel pipe arch bridge and improve the docking efficiency and safety.

[0062] The specific embodiments described above further elaborate on the purpose, technical solution and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A transverse adjustment mechanism for the hoisting attitude of a steel pipe arch bridge segment, characterized in that Comprising: A horizontal adjustment frame (300) for connecting a suspension frame (100) and a steel pipe arch bridge segment to be installed, and the horizontal adjustment frame (300) can move horizontally relative to the suspension frame (100) after being connected to the suspension frame (100); A horizontal adjustment linear driver (400) with one end connected to the horizontal adjustment frame (300) and the other end for connecting to the suspension frame (100), and the horizontal adjustment frame (300) is driven to move relative to the suspension frame (100) by the expansion and contraction of the horizontal adjustment linear driver (400); A limit tooling (200) for connecting to one longitudinal side of the suspension frame (100), and the limit tooling (200) can limit the horizontal movement of the suspension frame (100); Wherein, during the process of the suspension frame (100) lifting the steel pipe arch bridge segment to be installed and moving downward to the installation station, the limit tooling (200) can be clamped to the connection end of the already installed steel pipe arch bridge segment.

2. The lateral adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment according to claim 1, characterized in that, Sliding slots (310) are provided at both longitudinal ends of the horizontal adjustment frame (300), and the two sliding slots (310) are used to respectively clamp the corresponding two longitudinal sides of the suspension frame (100).

3. The lateral adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment according to claim 2, characterized in that, Support rollers (311) are provided on both inner 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).

4. The lateral adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment according to claim 1, wherein, The horizontal adjustment linear driver (400) is installed in the middle of the horizontal adjustment frame (300).

5. The lateral adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment according to claim 1, characterized in that, The horizontal adjustment linear driver (400) is a lead screw driven by a motor.

6. The lateral adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment according to claim 1, wherein The limit tooling (200) comprises: A connecting frame (210) for connecting the suspension frame (100), and when the connecting frame (210) is connected to the suspension frame (100), the connecting frame (210) remains vertically arranged; A clamping hoop rod (220) 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 outside the installation end of the already installed steel pipe arch bridge segment; A guiding frame (230) installed at the lower part of the connecting frame (210), the guiding frame (230) is located in the middle of the opening of the clamping hoop rod (220), and the guiding frame (230) is of a V-shaped structure; A damping limit component (250) installed on the connecting frame (210), and the damping limit component (250) is located at the initial end of the sliding path of the suspension frame (100); Wherein, under the action of the self-weight of the steel pipe arch bridge segment, the installation end of the steel pipe arch bridge segment can be clamped between the clamping hoop rod (220) and the lower end of the guiding frame (230), and the suspension frame (100) can slide downward relative to the connecting frame (210) overcoming the damping of the damping limit component (250).

7. The lateral adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment according to claim 6, characterized in that, The connecting frame (210) is provided with: Limit slide rails (211), two limit slide rails (211) are provided, and the two limit slide rails (211) are respectively arranged on both sides of the connecting frame (210); Connecting slider (212), the connecting slider (212) is slidably clamped outside the two limit slide rails (211), and the connecting slider (212) is used to connect the suspension frame (100).

8. The lateral adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment according to claim 7, characterized in that, The upper end of the guiding frame (230) is provided with: The 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); The 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) The pressure telescopic rod (240), 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 installation 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 lateral adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment according to claim 8, characterized in that, The pressure telescopic rod (240) includes: The pressure sleeve (241), a compression spring (242) is fitted inside the pressure sleeve (241); The first pressing rod (243), one end of the first pressing rod (243) is hinged to one end of the first clamping rod (231) facing the connecting frame (210), and the other end is slidably inserted into the pressure sleeve (241); The second pressing rod (244), one end of the second pressing rod (244) is hinged to one end of the second clamping rod (232) facing the connecting frame (210), 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 transverse adjustment mechanism for the hoisting attitude of the steel pipe arch bridge segment according to claim 9, characterized in that Two compression springs (242) are provided, and two pressure equalizing pistons (245) are fitted inside the pressure sleeve (241). The two pressure equalizing pistons (245) are located between the two compression springs (242), and the cavity between the two pressure 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 block (253). The piston section of the damping piston rod (252) is inserted into the damping hydraulic cylinder (251), and the damping block (253) is installed at the outer end of the damping piston rod (252). The side of the damping block (253) away from the damping piston rod (252) is an inclined surface sloping downward, and the damping 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 communicated with the cavity between the two pressure equalizing pistons (245) through a reversible one-way valve (260).

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