Integrated transport and erection equipment

Abstract

The present invention discloses an integrated transport and erection equipment, which belongs to the technical field of bridge pier construction, comprising a load-carrying vehicle body, a main arm hinged on the load-carrying vehicle body, a multi-stage telescopic arm coaxially arranged at the end of the main arm, a secondary arm hinged at the end of the multi-stage telescopic arm, a lifting mechanism at the end of the secondary arm, a main oil cylinder for flipping the main arm is provided on the load-carrying vehicle body, a secondary oil cylinder for flipping the secondary arm is provided on the multi-stage telescopic arm, and a power mechanism for driving the lifting wire rope of the lifting mechanism to be retracted and released is provided on the secondary arm; a slewing mechanism is provided on the main arm, a supporting bracket is provided on the slewing seat of the slewing mechanism, the slewing seat and the supporting bracket are vertically arranged, and gravity support is provided for the transported and lifted object when the main arm is in a vertical state; the invention will surely promote the assembly construction of prefabricated bridge piers to develop in the direction of green, factory-based and standardized construction, and its economic, social and environmental benefits will become increasingly significant.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge pier construction, and in particular relates to integrated transportation and erection equipment. Background Art

[0002] With the rapid development of transportation, higher and higher requirements have been put forward for the construction efficiency, construction speed and reduction of the impact of construction on the existing line traffic of bridge construction. Especially in recent years, under the requirements of green construction, the prefabricated bridge technology has significant energy-saving, environmental protection and low-carbon benefits and has been paid more and more attention and promoted by bridge builders. However, due to the limitations of material technology, construction technology level, impact on existing roads and equipment technology level, the prefabrication and assembly technology and application of bridge piers have not been further developed for a long time. In recent years, with the rapid development of engineering material technology and construction technology level, as well as the increasing requirements of the government for environmental protection, coupled with the inherent advantages of prefabricated bridge piers themselves, such as improving the construction efficiency of bridge piers and maximizing the reduction of the impact of substructure construction on traffic, the proportion of bridge piers that have gradually tried to adopt prefabricated erection methods at home and abroad has been increasing year by year.

[0003] Prefabricated bridge piers are tall piers or cap beams that are divided into several components according to a certain modulus. They are cast in a prefabrication site around the bridge site, transported to the site by vehicles and ships, and hoisted and erected. The prefabricated segments of bridge piers are large in size, heavy in weight, and high in height, so conventional lifting equipment is difficult to meet their transportation and erection construction needs. At present, the mainstream transportation and erection equipment is mainly split-type, such as large-tonnage flatbed transporters + large-tonnage crawler cranes. Although the equipment and construction methods have low rental costs for a single machine, the equipment occupies a large area during construction and has a large construction load. Especially for municipal bridge projects, it affects existing traffic, damages existing urban roads, and takes a long time to transfer.

[0004] Regarding the transportation and lifting of prefabricated bridge pier segments, the Chinese patent document, authorization announcement number CN207192620U, discloses a lifting device used in the field of bridge construction, which includes a main beam, fixed legs, movable legs, a lifting system and a sling, and a trolley travel system. The utility model can solve the problem of installing prefabricated bridge segments under complex conditions such as large slopes, small curvatures, variable spans, variable widths, and bridges on busy roads. Compared with existing bridge prefabricated segment installation equipment, the construction efficiency and safety can be greatly improved, the construction load is greatly reduced, and the impact on road traffic is small. It provides equipment support for the promotion of bridge pier prefabrication installation methods and has good application prospects.

[0005] Chinese patent document, authorization announcement number CN107500122A, in order to minimize the impact of crane overhead construction on lower traffic, the present invention provides a foldable crane, which utilizes a slewing support device between the main beam and the outrigger cross beam to rotate the main beam and the outrigger cross beam at a certain angle, thereby reducing the parking space and minimizing the impact on traffic; and utilizes an anchoring positioning device to realize the anchoring of the crane in different folding states. Summary of the invention

[0006] The purpose of the present invention is to provide a transport and erection integrated equipment based on the above-mentioned prior art; the technical solution adopted to achieve the above-mentioned purpose is:

[0007] A transport and erection integrated equipment comprises a load-carrying vehicle body, a main arm is hinged on the load-carrying vehicle body, a multi-stage telescopic arm is coaxially arranged at the end of the main arm, a secondary arm is hinged at the end of the multi-stage telescopic arm, a lifting mechanism is arranged at the end of the secondary arm, a main oil cylinder for flipping the main arm is arranged on the load-carrying vehicle body, a secondary oil cylinder for flipping the secondary arm is arranged on the multi-stage telescopic arm, and a power mechanism for driving the lifting wire rope of the lifting mechanism to be retracted and released is arranged on the secondary arm; a slewing mechanism is arranged on the main arm, a supporting bracket is arranged on the slewing seat of the slewing mechanism, the slewing seat and the supporting bracket are vertically arranged, and gravity support is provided for the transported and lifted object when the main arm is in a vertical state.

[0008] Preferably, an anchor assembly and a limit assembly are provided between the main arm and the load-carrying vehicle body to prevent the main arm from tipping over.

[0009] Preferably, the anchor assembly comprises a plurality of anchor rods hinged in sequence, and when the main arm is in a vertical state, the plurality of anchor rods are unfolded and tightened against each other.

[0010] Preferably, the limit assembly includes a fixed limit block arranged on the load-carrying vehicle body, and a dynamic limit block is arranged on the main arm. When the main arm is in a vertical state, the dynamic limit block abuts against the fixed limit block to limit the main arm.

[0011] Preferably, the main arm comprises two supporting arms arranged side by side, a connecting arm is provided between the two supporting arms, and the slewing mechanism is arranged on the two supporting arms.

[0012] Preferably, the multi-stage telescopic arm comprises a supporting telescopic arm correspondingly sleeved in two supporting arms, and the two supporting telescopic arms are connected at their ends by a connecting rod.

[0013] Preferably, a plurality of hydraulic legs are provided on the side of the load-carrying vehicle body, and a travel steering system is provided at the bottom of the load-carrying vehicle body. The travel steering system includes two rows of travel steering units arranged transversely along the load-carrying vehicle body, and each row of travel steering units includes a plurality of travel steering mechanisms arranged longitudinally along the load-carrying vehicle body.

[0014] Preferably, the walking steering mechanism includes a worm gear rotating device connected to the bottom of the load-carrying vehicle body, a support arm is provided on the rotating body of the worm gear rotating device, a swing arm is hinged on the support arm, a tire is installed on the swing arm, and a hydraulic cylinder for lifting and lowering the swing arm is provided between the swing arm and the support arm.

[0015] Preferably, a hydraulic motor is provided to power the tires.

[0016] Preferably, a connecting beam is rotatably connected to the swing arm, the connecting beam is vertically arranged to the swing arm, tires are installed at both ends of the connecting beam, and a brake mechanism is installed on the connecting beam.

[0017] The beneficial effects of the present invention are:

[0018] (1) Integrate the transportation and erection functions of prefabricated pier segments on one set of equipment to reduce construction equipment costs;

[0019] (2) When the road surface is uneven longitudinally, longitudinal compensation is provided by lifting and lowering the swing arms in groups; when the road surface is uneven laterally, adjustment is made by lateral swinging of the axle to ensure that the load platform remains level;

[0020] (3) The application of the travel steering mechanism can make full use of the existing road surface. The tire ground contact pressure is close to that of common trucks, and no special treatment of the road is required;

[0021] (4) The travel and steering mechanism of the load-carrying vehicle body adopts mechanical, electrical and hydraulic control. Each suspension tire group can steer independently, realizing multiple steering modes such as straight, horizontal, oblique, swing, eight-shaped steering and car mode, which can facilitate passing through general curves on the road;

[0022] (5) During transportation, the height of the whole machine is lowered by flipping the auxiliary arm and retracting the cylinder of the vehicle body suspension system, when passing through general height-restricted obstacles on urban roads, such as overpasses and billboards;

[0023] (6) The width of the equipment is small during transportation. When erecting, the whole machine is located between the bridge piers and does not infringe on public right of way. This can greatly reduce the impact of bridge construction on road traffic, especially in the field of urban elevated bridge construction.

[0024] (7) When prefabricating the pier segments, the lifting width is small and hydraulic legs are used to support the pier segments in large spans in advance, which ensures high safety and stability.

[0025] (8) The equipment described in the invention can carry heavy objects and run on existing roads. It is not restricted by the completion status of the main structure of the bridge and does not need to be operated sequentially from pier to pier. The equipment can realize the construction of multiple piers and multiple working surfaces at the same time, which is extremely maneuverable and flexible, thereby greatly improving the construction efficiency.

[0026] (9) When the erection of the prefabricated pier segment block is completed, the lower structure of the equipment is a complete heavy-load transport flatbed truck, and the upper part can be slightly modified to be used as a variable-length bridge deck crane and other equipment, with a high comprehensive utilization rate, which can reduce the waste of social resources;

[0027] (10) In view of the above advantages, this invention will surely promote the prefabricated pier assembly construction towards green, factory-based and standardized construction, and its economic, social and environmental benefits will become increasingly significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 for Figure 1 Left view of the middle main boom raised;

[0030] Figure 3 It is a structural schematic diagram of the walking and steering mechanism;

[0031] Figure 4 It is a schematic diagram of the horizontal rotation of the transported hoisted object;

[0032] Figure 5 It is a schematic diagram of the lifting state of the present invention. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings.

[0034] like Figures 1 to 5 As shown, an integrated transport and erection equipment includes a load-carrying vehicle body 1, on which a main arm 6 is hinged, a multi-stage telescopic arm 9 is coaxially arranged at the end of the main arm 6, a secondary arm 11 is hinged at the end of the multi-stage telescopic arm 9, and a lifting mechanism 12 is arranged at the end of the secondary arm 11. A main cylinder 4 for flipping the main arm 6 is provided on the load-carrying vehicle body 1, a secondary cylinder 10 for flipping the secondary arm 11 is provided on the multi-stage telescopic arm 9, and a power mechanism for driving the lifting wire rope of the lifting mechanism 12 to be retracted and released is provided on the secondary arm 11; a slewing mechanism 5 is provided on the main arm 6, and a supporting bracket 16 is provided on the slewing seat of the slewing mechanism 5, and the supporting bracket 16 is vertically arranged to the slewing seat, and provides gravity support for the transported and lifted object 7 when the main arm 6 is in a vertical state.

[0035] When the main arm 6 is placed flat on the load-carrying vehicle body 1, the transported hoisted object 7 is placed on it, which is the transport posture; when the main arm 6 is flipped and perpendicular to the load-carrying vehicle body 1, the transported hoisted object 7 is erected, which is the erection posture.

[0036] In order to ensure work safety, an anchor assembly and a limit assembly are provided between the main arm 6 and the load-carrying vehicle body 1 to prevent the main arm 6 from tipping over; the anchor assembly includes a plurality of anchor rods 17 hinged in sequence, and when the main arm 6 is in a vertical state, the plurality of anchor rods 17 are unfolded and tightened to each other, and the limit assembly includes a fixed limit block 19 arranged on the load-carrying vehicle 1, and a dynamic limit block 18 is provided on the main arm 6, and when the main arm 6 is in a vertical state, the dynamic limit block 18 rests on the fixed limit block 19 to limit the main arm 6.

[0037] The main arm 6 includes two supporting arms 13 and 14 arranged side by side, a connecting arm 15 is provided between the two supporting arms 13 and 14, and the slewing mechanism 5 is arranged on the two supporting arms 13 and 14 so as to increase the force bearing area and achieve the purpose of stable transportation.

[0038] Correspondingly, the multi-stage telescopic arm 9 includes a supporting telescopic arm correspondingly sleeved in the two supporting arms 13 and 14, and the two supporting telescopic arms are connected at their ends by a connecting rod.

[0039] A plurality of hydraulic legs 3 are provided on the side of the load-carrying vehicle body 1, and a travel steering system is provided at the bottom of the load-carrying vehicle body 3. The travel steering system comprises two rows of travel steering units arranged transversely along the load-carrying vehicle body 1, and each row of travel steering units comprises a plurality of travel steering mechanisms 2 arranged longitudinally along the load-carrying vehicle body.

[0040] The walking steering mechanism 2 includes a worm gear rotating device 21 connected to the bottom of the load-carrying vehicle body 1, a support arm 23 is provided on the rotating body of the worm gear rotating device 21, a swing arm 24 is hinged on the support arm 23, a tire 27 is installed on the swing arm 24, and a hydraulic cylinder 22 for lifting the swing arm 24 is provided between the swing arm 24 and the support arm 23. At the same time, a hydraulic motor 25 for providing power to the tire 27 can also be installed. A connecting beam is rotatably connected to the swing arm 24, the connecting beam is vertically arranged with the swing arm 24, and tires 27 are installed at both ends of the connecting beam, and a brake mechanism 26 is installed on the connecting beam, so that the connecting beam can be rotated when passing through a slope road surface through the rotation connection function between the connecting beam and the swing arm 24 to ensure that the two tires 27 are adaptively in contact with the slope to ensure that the load-carrying vehicle body 1 is always in a horizontal state.

[0041] In order to meet the requirements of accurate positioning and pre-adjustment of the prefabricated pier segment blocks before installation, a crossbeam is provided on the jib, a pulley is provided on the crossbeam, a movable pulley block is provided on the pulley, a lifting wire rope is provided on the movable pulley block, and a power mechanism, i.e. a winch, drives the retraction and release of the lifting wire rope, wherein the movement of the movable pulley block on the crossbeam realizes the adjustment of the lateral positioning, the longitudinal positioning is adjusted by the movement of the jib, and the vertical positioning is adjusted by retracting the rope of the lifting mechanism.

[0042] like Figure 4 and Figure 5As shown, when the present invention is working, first drive or remotely control the load-carrying vehicle body 1 to move to the stacking yard of the prefabricated pier segment block 7, then hoist a section of the prefabricated pier segment block 7 onto the slewing seat of the slewing mechanism 5, and then transport it to the construction site. During the transportation process, the various steering modes of the whole machine, such as straight travel, horizontal travel, oblique travel, swing, eight-shaped steering and car mode, are realized through the mutual cooperation of each walking and steering mechanism 2. After it is in place, multiple hydraulic legs 3 are supported to lift the whole machine, and the slewing mechanism 5 drives the prefabricated pier segment block 7 to rotate 90°. The main oil cylinder 4 is actuated to push the main arm 6 to rise until it is in a vertical state. At this time, the prefabricated pier segment block 7 is completely seated on the support bracket 16. At the same time, multiple anchor rods 17 are tightened to each other, and the dynamic limit block 18 is against the fixed limit block 19, thereby limiting the main arm 6 and preventing it from tipping over.

[0043] Then the multi-stage telescopic arm 9 is extended upward, the auxiliary cylinder 10 is actuated to adjust the position of the lifting mechanism 12, the lifting wire rope is lowered to bundle the prefabricated pier segment block 7, and finally the prefabricated pier segment block is lifted and installed at the required position.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transport and erection integrated equipment, characterized in that: It comprises a load-carrying vehicle body, a main arm is hinged on the load-carrying vehicle body, a multi-stage telescopic arm is coaxially arranged at the end of the main arm, a secondary arm is hinged at the end of the multi-stage telescopic arm, a lifting mechanism is arranged at the end of the secondary arm, a main oil cylinder for flipping the main arm is arranged on the load-carrying vehicle body, a secondary oil cylinder for flipping the secondary arm is arranged on the multi-stage telescopic arm, and a power mechanism for driving the lifting wire rope of the lifting mechanism to be retracted and released is arranged on the secondary arm; a slewing mechanism is arranged on the main arm, a supporting bracket is arranged on the slewing seat of the slewing mechanism, the slewing seat and the supporting bracket are arranged vertically, and gravity support is provided for the transported and lifted object when the main arm is in a vertical state; The above-mentioned integrated transport and erection equipment is provided with an anchor assembly and a limit assembly between the main arm and the load-carrying vehicle body to prevent the main arm from tipping over; The limit assembly includes a fixed limit block arranged on the load-carrying vehicle body, and a dynamic limit block is arranged on the main arm. When the main arm is in a vertical state, the dynamic limit block abuts against the fixed limit block to limit the main arm. The anchor assembly comprises a plurality of anchor rods hinged in sequence, and when the main arm is in a vertical state, the plurality of anchor rods are spread out and tightened against each other; The main arm comprises two supporting arms arranged side by side, a connecting arm is arranged between the two supporting arms, and a slewing mechanism is arranged on the two supporting arms; The multi-stage telescopic arm comprises a supporting telescopic arm correspondingly sleeved in two supporting arms, and the ends of the two supporting telescopic arms are connected by a connecting rod; The above-mentioned integrated transport and erection equipment is provided with a plurality of hydraulic legs on the side of the load-carrying vehicle body, and a travel steering system is provided at the bottom of the load-carrying vehicle body, the travel steering system comprises two rows of travel steering units arranged transversely along the load-carrying vehicle body, and each row of travel steering units comprises a plurality of travel steering mechanisms arranged longitudinally along the load-carrying vehicle body; The walking steering mechanism comprises a worm gear rotating device connected to the bottom of the load-carrying vehicle body, a support arm is provided on the rotating body of the worm gear rotating device, a swing arm is hinged on the support arm, a tire is mounted on the swing arm, and a hydraulic cylinder for lifting the swing arm is provided between the swing arm and the support arm; The above-mentioned integrated transport and erection equipment is equipped with a hydraulic motor to provide power for the tires; The above-mentioned integrated transport and erection equipment is rotatably connected to a connecting beam on the swing arm, the connecting beam is vertically arranged with the swing arm and tires are installed at both ends of the connecting beam, and a brake mechanism is installed on the connecting beam; The method for using the above-mentioned integrated transport and erection equipment is as follows: first, control the load-carrying vehicle body to move to the prefabricated pier segment block stacking yard, lift a prefabricated pier segment block onto the slewing seat of the slewing mechanism, and then transport it to the construction site. After it is in place, multiple hydraulic legs are raised to lift the whole block. The slewing mechanism drives the prefabricated pier segment block to rotate 90°, and the main cylinder is actuated to push the main arm up to a vertical state. At this time, the prefabricated pier segment block is completely seated on the support bracket. At the same time, multiple anchor rods are tightened to each other, and the dynamic limit block is against the fixed limit block to limit the main arm and prevent it from tipping over; then the multi-stage telescopic arm is extended upward, the auxiliary cylinder is actuated to adjust the position of the lifting mechanism, the lifting wire rope is lowered to bundle the prefabricated pier segment block, and finally it is lifted and installed at the required position.

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