CN115848500B - A crane semi-trailer chassis and the crane semi-trailer used therein - Google Patents
A crane semi-trailer chassis and the crane semi-trailer used thereinInfo
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- CN115848500B CN115848500B CN202211341771.8A CN202211341771A CN115848500B CN 115848500 B CN115848500 B CN 115848500B CN 202211341771 A CN202211341771 A CN 202211341771A CN 115848500 B CN115848500 B CN 115848500B
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Abstract
本发明公开了一种起重半挂车底盘及其所应用的起重半挂车，包括车架、前辅助支腿、后辅助支腿及固定在车架上的吊机基座；所述吊机基座四个角处分别设置一主支腿油缸套，连接主支腿油缸后起重力可直接传递到地面，前后辅助支腿只需要很小的力就可以承担吊装距离产生的吊装力矩，大大降低了吊装时车体承担的剪力及弯矩，减小了垂向变形；所述吊机基座底部设置有固定平台连接座，可以实现支腿支撑吊装模式及固定平台支撑吊装模式，其中支腿支撑吊装模式下最大起重力可达300吨，固定平台支撑吊装模式下起重力可达500吨，且在超大件吊装时，能够根据任务要求利用多台起重机以任意形式组合进行吊装，完成超长结构件的吊装任务。
This invention discloses a crane semi-trailer chassis and the crane semi-trailer used therein, including a frame, front auxiliary outriggers, rear auxiliary outriggers, and a crane base fixed to the frame. A main outrigger cylinder sleeve is installed at each of the four corners of the crane base. After connecting the main outrigger cylinders, the lifting force can be directly transferred to the ground. The front and rear auxiliary outriggers only require a small force to bear the lifting torque generated by the lifting distance, greatly reducing the shear force and bending moment borne by the vehicle body during lifting, and minimizing vertical deformation. A fixed platform connecting seat is provided at the bottom of the crane base, enabling both outrigger-supported lifting and fixed-platform-supported lifting modes. The maximum lifting force can reach 300 tons in the outrigger-supported lifting mode and 500 tons in the fixed-platform-supported lifting mode. Furthermore, when lifting extremely large components, multiple cranes can be combined in any form according to the task requirements to complete the lifting of ultra-long structural components.
Description
[ Field of technology ]
The invention relates to the technical field of hoisting machinery, in particular to a hoisting semi-trailer chassis and a hoisting semi-trailer applied to the same.
[ Background Art ]
The truck-mounted hoisting semi-trailer is a novel hoisting and transporting machine, has wide application prospect in the engineering field, has double functions of transportation and hoisting, can replace a common truck and an automobile crane, and has the composite function, so that the truck-mounted hoisting semi-trailer is widely applied to various fields such as electric power, stations, agriculture, buildings, metallurgy, wharfs, petroleum exploitation, transportation and the like.
The existing 500-ton crane generally adopts an eight-axis integral axle, the supporting legs of the existing 500-ton crane are far away from a rotary disc of the crane, the hanging weight can be transmitted to the ground through a vehicle body, so that the vehicle body needs to bear very large shearing force and bending moment and can generate very large vertical deformation, the existing 500-ton crane adopts rotary supporting legs to take four corners of the rotary disc as the outer sides of the axial directions to take out the legs in the radial directions, the lower part of the rotary disc is suspended, the vertical settlement amount reaches 50-100mm during the hanging operation, the hanging is unstable, and the vehicle frame is very heavy.
[ Invention ]
Aiming at the defects of the prior art, the invention aims to provide a light-weight lifting semitrailer chassis with large lifting force and moment, good whole vehicle trafficability, good flexibility and the lifting semitrailer applied by the same.
In order to achieve the above purpose, the invention provides a chassis of a hoisting semi-trailer, which comprises a frame, a front auxiliary supporting leg positioned at the front end of the frame, a rear auxiliary supporting leg positioned at the rear end of the frame and a crane base fixed on the frame;
the frame comprises two longitudinal beams which are oppositely arranged left and right and thirteen cross beams which are arranged between the two longitudinal beams, the crane base is fixed on a seventh cross beam, an eighth cross beam and the two longitudinal beams, the front auxiliary supporting leg is arranged at a third cross beam, the rear auxiliary supporting leg is arranged at a twelfth cross beam, the crane base is of a quadrilateral structure, and a main leg oil cylinder sleeve is respectively arranged at four corners of the crane base.
Preferably, the crane base comprises an upper layer structure, a middle layer structure and a lower layer structure which are sequentially arranged from top to bottom, wherein the upper layer structure comprises an upper layer connecting plate, a crane bottom ring consisting of an outer ring circular hoop and an inner ring circular hoop is arranged in the middle of the upper surface of the upper layer connecting plate, and a bulge which is flush with the upper surface of the main leg cylinder sleeve is respectively arranged at four corners of the crane bottom ring;
The middle layer structure comprises four vertical support plates which are connected end to form a quadrilateral structure, an outer ring support and an inner ring support are respectively arranged in the positions corresponding to an outer ring circular hoop and an inner ring circular hoop in the upper layer structure, and vertical rib plates are arranged between the vertical support plates and the outer ring support as well as between the outer ring support and the inner ring support;
The lower layer structure comprises a seventh cross beam, an eighth cross beam and two longitudinal beams positioned between the seventh cross beam and the eighth cross beam, wherein outer vertical plates are respectively arranged on the outer sides of the two longitudinal beams positioned at the positions, the seventh cross beam, the eighth cross beam and the two longitudinal beams positioned at the positions are all arranged into a box-shaped structure, and vertical reinforcing ribs are respectively arranged between the inner vertical plates, the outer vertical plates and the two longitudinal beams.
Preferably, the bottom of loop wheel machine base still is provided with fixed platform connecting seat, fixed platform connecting seat is provided with eight, sets up respectively in the bottom of the two longerons about between seventh crossbeam, eighth crossbeam and seventh crossbeam and eighth crossbeam, and each position is provided with two for with the reservation interface connection on the fixed platform, utilize fixed platform to realize fixed platform support hoist mode.
Preferably, the fixed platform connecting seat comprises an upper connecting plate and a lower connecting plate which are horizontally arranged, the upper connecting plate is fixedly connected to the frame, the lower connecting plate is fixedly connected to the lower portion of the upper connecting plate through a vertical connecting block, and a plurality of connecting holes are formed in the lower connecting plate.
Preferably, a reinforcing plate is further arranged between the upper connecting plate and the vertical connecting block, and the reinforcing plate is welded below the upper connecting plate in an adhesive mode.
Preferably, the vertical connecting blocks are provided with a plurality of vertical connecting blocks which are uniformly arranged along two length edges of the reinforcing plate respectively.
Preferably, the frame is further provided with an elevator base, the elevator base is arranged at the second cross beam on the right longitudinal beam and used for installing an elevator, and workers can enter the elevator during construction and perform operations such as on-site command, maintenance and auxiliary installation after the elevator is lifted.
Preferably, the front auxiliary supporting leg comprises a front fixed beam fixed at the top of the third cross beam of the frame and front movable supporting legs respectively connected with two ends of the front fixed beam in a rotating mode, and one ends of the front movable supporting legs, far away from the front fixed beam, are respectively provided with a front vertical oil cylinder sleeve.
Preferably, the rear side surface of each front movable supporting leg and the outer sides of the two longitudinal beams at the fourth cross beam of the frame are respectively provided with a front horizontal oil cylinder connecting seat for connecting the front horizontal oil cylinders, and the front horizontal oil cylinders are utilized to drive the retraction of the front movable supporting legs.
Preferably, the rear auxiliary supporting leg comprises a rear fixed beam fixed at the top of the twelfth cross beam of the frame and rear movable supporting legs respectively connected with two ends of the rear fixed beam in a rotating mode, and one ends of the rear movable supporting legs, far away from the rear fixed beam, are respectively provided with a rear vertical oil cylinder sleeve.
The front side of the rear fixed beam is also provided with two oblique support plates, one ends of the oblique support plates are fixed at the tops of the two longitudinal beams, the other ends of the oblique support plates are fixed at the front side surface of the rear fixed beam, and the front side surface of the rear movable support leg and the outer side surfaces of the two oblique support plates are respectively provided with a rear support leg oil cylinder connecting seat for connecting the rear support leg oil cylinders, and the rear support leg oil cylinders are utilized to drive the retraction of the rear movable support legs.
Preferably, the front movable supporting leg and the rear supporting leg comprise two vertical plates which are oppositely arranged in parallel and a plurality of sealing plates connected to the top and the bottom of the two vertical plates, one side, far away from the frame, of each vertical plate is bent downwards, and the bending parts of the two vertical plates are respectively welded with a first arc reinforcing plate in an adhesive mode, so that the bending parts are reinforced, the working stress is reduced, and the service life is prolonged.
Preferably, the front movable supporting leg and the rear movable supporting leg are respectively and vertically provided with a stabilizing plate and an inclined plate, the stabilizing plates are respectively positioned at the front horizontal oil cylinder connecting seat and the rear horizontal oil cylinder connecting seat and used for reinforcing the vertical plates at the stabilizing plates and preventing the vertical plates from bending and deforming when the front horizontal oil cylinder acts, and the inclined plates are obliquely arranged at the bending positions of the vertical plates, the tops of the inclined plates are aligned with the bending positions above the vertical plates, and the bottoms of the inclined plates are aligned with the bending positions below the vertical plates and further reinforce the bending positions.
Preferably, a straight pull plate is further arranged in the front movable supporting leg, the straight pull plate is horizontally arranged between the two vertical plates, one end of the straight pull plate is fixedly connected with one end of the front movable supporting leg, which is close to the front fixed beam, and the other end of the straight pull plate is abutted to the sealing plate.
Preferably, the side of the rear movable supporting leg vertical plate, which is close to the frame, is also provided with a downward bending part, and a second arc reinforcing plate is arranged at the bending part.
Preferably, the top of the front fixed beam is also provided with a crane arm bracket for placing a crane arm.
Preferably, the middle positions of the seventh beam and the eighth beam in the length direction are respectively provided with an anti-deformation via hole, so that the crane pipeline arrangement and maintenance can be performed.
Preferably, the deformation-resistant via hole is arranged to be of a hexagonal structure, the deformation-resistant capability of the structure is remarkably enhanced compared with that of a round via hole under the same vertical load, and the structure is more convenient for personnel to pass through during disassembly, assembly and maintenance of the crane.
Preferably, the chassis is of a double-bridge structure, a first bridge through hole is formed in the ninth cross beam of the frame longitudinal beam, and a second bridge through hole is formed in the eleventh cross beam of the frame longitudinal beam.
Preferably, the frame adopts an oil gas spring independent suspension, and cantilever frames and oil gas spring supports are arranged at the outer sides of the two longitudinal beams of the frame and correspond to the first bridge through holes and the second bridge through holes.
Another object of the present invention is to provide a lifting semitrailer, comprising the lifting semitrailer chassis and a crane arranged on a crane base.
The invention has the beneficial effects that:
According to the chassis crane base of the hoisting semi-trailer, the four main leg oil cylinder sleeves arranged at the four corners of the chassis crane base of the hoisting semi-trailer can be connected with the main leg oil cylinders, so that the lifting force can be directly transmitted to the ground, the tensile force borne by the lower surface of the chassis crane base due to a huge bending moment is greatly reduced, the front auxiliary leg and the rear auxiliary leg can bear the hoisting moment generated by the hoisting distance only by small force, the shearing force and the bending moment borne by a vehicle body during hoisting are greatly reduced, and the vertical deformation is reduced;
In addition, the chassis disclosed by the invention keeps the widths of the longitudinal beams and the cross beams, so that materials are greatly saved, and the crane is convenient to install and maintain, and if the chassis is not used as a crane chassis, the chassis can be connected with a transport platform through bolt holes on a rotary disc, so that goods can be transported and used;
The chassis of the hoisting semi-trailer can realize a supporting leg supporting and hoisting mode and a fixed platform supporting and hoisting mode, is respectively suitable for two construction sites of a field temporary site and a long-term fixed site, and has wide application range, wherein the maximum lifting force in the supporting leg supporting and hoisting mode can reach 300 tons, the maximum lifting force and the lifting moment in the fixed platform supporting and hoisting mode can be greatly improved, and the maximum lifting force can reach 500 tons, and in the process of hoisting an oversized part, a plurality of cranes can be utilized for hoisting in any form according to the requirement of a task, so that the hoisting task of the oversized part can be completed;
The chassis of the hoisting semi-trailer adopts the steering axle hydro-pneumatic spring independent suspension, so that the field trafficability of the chassis can be improved, and steering adjustment can be realized in a narrow place;
The crane base in the chassis of the hoisting semi-trailer is provided with the three layers of structures from top to bottom, wherein the bulges at the four corners in the upper layer of the structure can fix the upper end of the main leg cylinder, so that centripetal extrusion force of the top of the main leg cylinder sleeve to the rotary disc is uniformly dispersed to the crane base during hoisting, and larger stress is avoided;
the arrangement of the fixed platform connecting structure enhances the stability of the crane in a fixed platform hoisting mode, and reduces the deformation of a crane base;
the anti-deformation via hole can be arranged, so that the pipeline arrangement and crane maintenance can be performed, and the anti-deformation capability can be improved;
the design of the chassis of the hoisting semi-trailer solves the problems of unstable hoisting, incoordination, poor installation precision, low efficiency and the like existing in the prior art when the traditional single crane is used for hoisting a large-sized length beam, and greatly improves the working efficiency.
[ Description of the drawings ]
FIG. 1 is a schematic diagram I of a lifting semitrailer according to the present invention
FIG. 2 is a schematic diagram II of a lifting semitrailer according to the present invention;
FIG. 3 is a top view of a lifting semitrailer in accordance with the present invention;
FIG. 4 is a bottom view of the lifting semitrailer of the present invention;
FIG. 5 is a bottom view of the stationary platform coupler seat of the present invention;
FIG. 6 is a front view of the stationary platform adapter of the present invention;
FIG. 7 is an exploded view of the crane base of the present invention;
FIG. 8 is a schematic view of the front auxiliary leg of the present invention;
FIG. 9 is a schematic view of the rear auxiliary leg of the present invention;
FIG. 10 is a schematic diagram of the chassis running condition of the lifting semitrailer according to the present invention;
FIG. 11 is a schematic view of a construction of a lifting semitrailer according to the present invention;
1-a frame; 101-longitudinal beams, 102-transverse beams, 1021-seventh transverse beams, 1022-eighth transverse beams, 2-front auxiliary supporting legs, 201-front fixed beams, 202-front movable supporting legs, 2021-vertical plates, 2022-sealing plates, 2023-first arc reinforcing plates, 2024-stabilizing plates, 2025-inclined plates, 2026-vertical pulling plates, 203-front vertical oil cylinder sleeves, 204-front horizontal cylinder connecting seats, 3-rear auxiliary supporting legs, 301-rear fixed beams, 302-rear movable supporting legs, 3021-second arc reinforcing plates, 303-rear vertical oil cylinder sleeves, 304-rear horizontal cylinder connecting seats, 305-inclined supporting plates, 4-crane bases, 401-upper structures, 4011-upper connecting plates, 4012-crane bottom rings, 4013-bulges, 402-middle layer structures, 4021-vertical supporting plates, 4022-outer ring supports, 4023-inner ring supports, 4-vertical rib plates, 4025-vertical connecting plates, 403-lower structures, 4031-outer layer vertical plates, 4032-vertical reinforcing ribs, 4033-vertical connecting plates, 4034-lower connecting plates, 408-main support frames, 8-lifting arms, 8-lifting support frames, 8-lifting frames, support frames, and support frames.
[ Detailed description ] of the invention
The invention is illustrated by the following specific examples, but is in no way limited thereto, in order to make the objects, technical solutions and advantages of the invention more apparent. The following description of the preferred embodiments of the invention is merely illustrative of the invention and should not be taken as limiting the invention, it being understood that any modifications, equivalents, and improvements made within the spirit and principles of the invention are intended to be included within the scope of the invention.
As shown in fig. 1-2, the invention provides a chassis of a lifting semitrailer and the lifting semitrailer applied by the chassis, comprising a frame 1, a front auxiliary supporting leg 2 positioned at the front end of the frame 1, a rear auxiliary supporting leg 3 positioned at the rear end 1 of the frame and a crane base 4 fixed on the frame;
The frame 1 comprises two longitudinal beams 101 which are oppositely arranged left and right, thirteen cross beams 102 which are connected between the two longitudinal beams and sequentially arranged from front to back, wherein the cross sections of the longitudinal beams and the cross beams are rectangular, the longitudinal beam at the front side of the fifth cross beam is higher than the longitudinal beam at the rear of the fifth cross beam, the width between the two longitudinal beams in front of the eighth cross beam is larger than the width between the two longitudinal beams behind the eighth cross beam, the crane base 4 is fixed on the seventh cross beam, the eighth cross beam and the two longitudinal beams, the front auxiliary supporting leg 2 is arranged at the third cross beam, the rear auxiliary supporting leg 3 is arranged at the twelfth cross beam, the crane base 4 is of a square structure, a crane bottom ring is arranged at the middle position of the top of the crane base, a main supporting leg oil cylinder sleeve 5 is arranged at the four corners of the crane base and is used for connecting a main supporting leg oil cylinder, the chassis is of a double-bridge structure, a bridge through hole is arranged at the ninth cross beam of the frame cross beam, and a second bridge through hole is arranged at the eleventh cross beam of the frame.
As shown in fig. 7, the crane base 4 is configured as a three-layer structure, and specifically includes an upper layer structure 401, a middle layer structure 402, and a lower layer structure 403 that are sequentially arranged from top to bottom;
The upper structure comprises an upper connecting plate 4011, wherein a crane foundation ring 4012 consisting of an outer ring circular hoop and an inner ring circular hoop is arranged in the middle of the upper surface of the upper connecting plate 4011 and is connected with a crane by bolts, and a bulge 4013 is respectively arranged at four corners of the upper surface of the upper connecting plate 4011, and the bulge 4013 is flush with the upper surface of a main leg cylinder sleeve and welded with the upper surfaces of the main leg cylinder sleeve 5 and the upper connecting plate together and is used for fixing the upper end of the main leg cylinder sleeve, so that centripetal extrusion force of the top of the main leg cylinder sleeve to a crane rotary disc is uniformly dispersed to a crane base during hoisting, and larger stress is avoided;
The middle layer structure 402 is fixedly arranged at the tops of the two longitudinal beams and the seventh and eighth cross beams, and comprises a vertical support plate 4021 which is connected end to form a quadrilateral structure, a circular ring support is arranged at the middle position in the middle of the middle layer structure, the circular ring support comprises an outer ring support 4022 and an inner ring support 4023 which are concentrically arranged, the outer ring support 4022 and the inner ring support 4023 respectively correspond to an outer ring circular hoop and an inner ring circular hoop in the upper layer structure, vertical rib plates 4024 are respectively arranged between the vertical support plate 4021 and the outer ring support 4022 and between the outer ring support 4022 and the inner ring support 4023, and the vertical rib plates 2024 are radially arranged in the embodiment and are provided with 24 blocks in total;
preferably, a vertical connecting plate 4025 is respectively arranged at the front end and the rear end of the upper layer connecting plate above the seventh cross beam and the eighth cross beam, a vertical rib plate is also arranged between the vertical connecting plate 4025 and the vertical supporting plate 4021, and the upper layer connecting plate and the middle layer are welded into a whole, so that the weight of the crane is mostly directly transferred to the main leg cylinder, the stress of the lower layer structure of the base is reduced, and the force of the crane can be dispersed and uniformly transferred to the lower layer structure;
The main body of the lower structure 403 is a frame longitudinal beam and seventh and eighth cross beams, the longitudinal beams are longitudinally connected through a crane base and used as an inner layer of the lower structure of the crane base, specifically, the lower structure 403 is composed of a seventh cross beam 1021, an eighth cross beam 1022 and two longitudinal beams positioned between the seventh cross beam 1021 and the eighth cross beam 1022, the outer sides of the two longitudinal beams positioned at the position are respectively provided with an outer vertical plate 4031, the outer vertical plates 4031 are inwards bent at the front and back of the crane base and are received in the outer web of the longitudinal beam, the seventh cross beam, the eighth cross beam and the two longitudinal beams positioned at the position are respectively provided with a hollow box-shaped structure, vertical reinforcing ribs 4032 are respectively arranged between the inner sides of the seventh cross beam, the eighth cross beam and the outer vertical plates 4031 and the longitudinal beams, the inner space of the inner side is divided into a grid-shaped structure, the deformation resistance is improved, and the force is uniformly transmitted to a fixed platform (platform supporting and lifting mode) or four main leg cylinders (supporting and lifting mode), four middle through holes formed by the seventh cross beam, the eighth cross beam and the two longitudinal beams are respectively provided with an oblique connecting plate 4034;
In this embodiment, the deformation-resistant via holes 11 are configured to have a hexagonal structure, and the deformation-resistant capability of the structure and the circular via holes under the same vertical load is strong, and the crane is convenient for personnel to pass through during disassembly, assembly and maintenance.
Preferably, the vertical reinforcing ribs 4032 are provided with lightening holes, so that the weight of the chassis is reduced.
As shown in fig. 4, the bottom of the crane base 4 is further provided with a fixed platform connecting seat 7, eight fixed platform connecting seats 7 are provided, and two positions are provided at the bottoms of the seventh cross beam, the eighth cross beam, the left and right longitudinal beams between the seventh cross beam and the eighth cross beam, respectively, and are used for being connected with a reserved interface of the fixed platform, and the fixed platform lifting mode is realized by using the fixed platform.
As shown in fig. 5 and 6, the fixed platform connecting seat 7 includes an upper connecting plate 701 and a lower connecting plate 702 that are horizontally arranged, the upper connecting plate 701 is fixedly connected to the bottom of the frame, the lower connecting plate 702 is fixedly connected to the lower side of the upper connecting plate 701 through a vertical connecting block 703, the width of the lower connecting plate 702 is larger than that of the upper connecting plate 701, a plurality of connecting holes 705 are uniformly formed in the lower connecting plate 702 along the periphery thereof, eight connecting holes 705 are formed in the embodiment, and when the lower connecting plate is connected with the fixed platform, the lower connecting plate 702 is connected with the fixed platform through saddle bolts or common bolts.
Preferably, a reinforcing plate 704 is further disposed between the upper connecting plate 701 and the vertical connecting block 703, and the reinforcing plate 704 is welded under the upper connecting plate 701, and the length and the width of the reinforcing plate are smaller than those of the upper connecting plate 701.
Preferably, the vertical connection blocks 703 are provided with a plurality of vertical connection blocks, which are uniformly arranged along two length edges of the reinforcing plate 704, in this embodiment, the vertical connection blocks 703 are provided with eight vertical connection blocks, and a certain distance is reserved between every two adjacent vertical connection blocks 703, so that the bolts can be conveniently disassembled and assembled.
As shown in fig. 2 and 3, the frame 1 is further provided with an elevator base 6, the elevator base 6 is disposed at the second cross beam on the right longitudinal beam, the elevator base 6 is disposed as a circular protrusion, a plurality of bolt holes are uniformly formed along the circumference of the circular protrusion, and the circular protrusion is connected with the lifting arm of the folding arm type elevator by bolts.
The front auxiliary supporting leg 2 comprises a front fixed beam 201 fixed on the top of a third cross beam of the frame and front movable supporting legs 202 which are respectively connected with two ends of the front fixed beam 201 in a rotating way, and one end of each front movable supporting leg 202, which is far away from the front fixed beam 201, is respectively provided with a front vertical oil cylinder sleeve 203 for connecting a front vertical oil cylinder;
As shown in fig. 8, the front movable leg 202 includes two vertical plates 2021 disposed vertically opposite to each other, and a plurality of sealing plates 2022 disposed at the top and bottom between the two vertical plates, the vertical plates 2021 include a first horizontal portion, a first inclined portion, and a second horizontal portion, which are sequentially connected, the first inclined portion is inclined downward, and the front vertical cylinder liner is disposed at one end of the second horizontal portion away from the first inclined portion.
The outer side bottom of the vertical plate and the fourth cross beam of the outer side of the two longitudinal beams of the frame are respectively fixed with a front horizontal cylinder connecting seat 203 for connecting the front horizontal cylinder, the front horizontal cylinder is utilized to drive the front movable supporting legs to be outwards extended and retracted, when the front movable supporting legs are outwards extended, the two front movable supporting legs and the front fixed beam are positioned on the same straight line, and when the front movable supporting legs are retracted, the two movable supporting legs are perpendicular to the front fixed beam.
Preferably, the connection between the first horizontal portion and the first inclined portion at the lower outer side of the two vertical plates is respectively welded with a first arc reinforcing plate 2023, and the central angle of the arc reinforcing plate is the same as the included angle between the first horizontal portion and the first inclined portion, so that the connection bending portion is reinforced, the working stress is reduced, and the service life is prolonged.
Preferably, in this embodiment, two stabilizing plates 2024 are further vertically disposed in the front movable leg 202, the stabilizing plates 2024 are located at the front horizontal cylinder connecting seat 204 and are used for reinforcing the vertical plates 2021, preventing the vertical plates from bending and deforming during the operation of the front horizontal cylinder, an inclined plate 2025 is further disposed between the two vertical plates, the inclined plate 2025 is obliquely disposed at the connection position of the first horizontal portion and the first inclined portion, two sides of the inclined plate are respectively welded with the two vertical plates, and the upper ends and the lower ends are respectively welded with the sealing plates at the connection position of the first horizontal portion and the first inclined portion, so as to further reinforce the bending position;
Preferably, the sealing plate at the bottom of the first horizontal part of the front movable supporting leg extends to the inside of the front movable supporting leg, and the end part of the sealing plate is abutted against the inner side of the sealing plate of the vertical plate inclined part.
The rear auxiliary supporting leg 3 comprises a rear fixed beam 301 fixed at the top of a twelfth cross beam of the frame and rear movable supporting legs 302 respectively connected to two ends of the rear fixed beam 301 in a rotating mode, the length of the rear fixed beam 301 is identical to that of the front fixed beam, and one ends, far away from the rear fixed beam 301, of the rear movable supporting legs 302 are respectively provided with a rear vertical oil cylinder sleeve 303 for being connected with a rear vertical oil cylinder.
As shown in fig. 2, the front side of the rear fixing beam is further provided with two oblique support plates 305, one end of each oblique support plate 305 is fixed at the top of the two longitudinal beams, the other end of each oblique support plate 305 is fixed at the front side of the rear fixing beam, a horizontal support plate is further arranged between each oblique support plate 305 and the rear fixing beam and used for supporting the rear fixing beam 301, and the front side of the rear movable support leg 302 and the outer side of each oblique support plate 305 are respectively provided with a rear support leg oil cylinder connecting seat for connecting the rear support leg oil cylinders, so that the rear movable support leg is driven to retract by the rear support leg oil cylinders.
As shown in fig. 9, the structure of the rear movable leg 302 is similar to that of the front movable leg, except that a second inclined portion is further disposed at one end of the first horizontal portion of the two vertical plates of the rear movable leg 302, which is far away from the inclined portion, a third horizontal portion is further disposed at one end of the second inclined portion, which is far away from the first horizontal portion, and the height of the third horizontal portion is lower than that of the first horizontal portion, and a second arc reinforcing plate 3021 is disposed at the connection between the third horizontal portion of the bottom of the outer side of the vertical plate and the second inclined portion to reinforce the bent portion thereof.
Preferably, a vertical pulling plate 2026 is further disposed in the front movable leg 202, the vertical pulling plate 2026 is horizontally disposed between the two vertical plates 2021, a certain distance is left between the bottom of the vertical pulling plate and the sealing plate at the bottom of the first horizontal portion, the vertical pulling plate is flush with the upward bending portion of the front movable leg near one end of the front fixed beam, one end of the vertical pulling plate is fixedly connected with one end of the front movable leg 202 near the front fixed beam, and the other end of the vertical pulling plate is abutted against the inner side of the sealing plate at the first inclined portion of the vertical plate.
Preferably, the top of the front fixed beam is further provided with a boom support 10, and the top of the boom support 10 is provided with a concave structure with two high sides and a low middle for placing the boom.
As shown in fig. 1 and 2, the frame adopts an oil-gas spring independent suspension, cantilever frames 9 and oil-gas spring supports 8 are respectively arranged at positions, corresponding to the first bridge through holes and the second bridge through holes, of the outer sides of two longitudinal beams of the frame, and the cantilever frames 9 and the oil-gas spring supports 8 have the same structures as those of the prior art, and are not described in detail herein.
The chassis of the hoisting semi-trailer is provided with two hoisting modes, namely a supporting leg supporting hoisting mode and a fixed platform supporting hoisting mode;
The support leg supporting and hoisting mode is suitable for field temporary site construction, when the crane works, four main support legs on the periphery of a crane base and oil cylinders at the front auxiliary support leg and the rear auxiliary support leg extend out completely, (the oil cylinders at the main support leg on the same side and the vertical oil cylinders at the front auxiliary support leg and the rear auxiliary support leg can be set to be communicated or locked, and the pressure ratio is 4:1 during communication, so that the bearing capacity of the auxiliary support legs and the vertical displacement of a rotary disc can be greatly reduced, the weight reduction of the front auxiliary support leg and the rear auxiliary support leg is realized), the main support leg bears vertical load, the front auxiliary support leg and the rear auxiliary support leg bear overturning moment and wind load, and the maximum lifting force of the mode can reach 300 tons;
The fixed platform supporting and hoisting mode is suitable for construction of a long-term fixed site, when the fixed platform supporting and hoisting mode works, eight fixed platform connecting seats at the bottom of a crane base are fixed on a cement platform (a bolt connecting interface is reserved on the platform) which is pre-built in the long-term construction site by utilizing riding bolts or common bolts, oil cylinders at main supporting legs are fully retracted in the mode, oil cylinders at front auxiliary supporting legs and rear auxiliary supporting legs are fully extended to provide overturning moment, the maximum lifting force of the mode can reach 500 tons, the weight required for completing the large lifting moment can be greatly reduced, and the large-span and large-area hoisting task can be completed by using a plurality of cranes for array combined construction.
As shown in fig. 10, when the chassis of the lifting semitrailer does not work, the movable support legs of the front auxiliary support leg and the rear auxiliary support leg are retracted to be parallel to the frame longitudinal beam, so that the space is saved, and the trafficability of the whole trailer is improved.
Example 2
As shown in fig. 11, this embodiment provides a lifting semitrailer, which includes the lifting semitrailer chassis described in embodiment 1 and a crane 12 disposed on a crane base.
The foregoing examples have been presented only to illustrate certain embodiments of the invention and are described in more detail and not to be construed as limiting the invention. It should be noted that variations and modifications can be made by those skilled in the art without departing from the spirit of the invention, which falls within the scope of the present section. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (9)
1. The chassis of the hoisting semi-trailer is characterized by comprising a frame, a front auxiliary supporting leg positioned at the front end of the frame, a rear auxiliary supporting leg positioned at the rear end of the frame and a crane base fixed on the frame;
The frame comprises two longitudinal beams which are oppositely arranged left and right and thirteen cross beams which are arranged between the two longitudinal beams, the front auxiliary supporting leg is arranged at a third cross beam, and the rear auxiliary supporting leg is arranged at a twelfth cross beam;
The crane base comprises an upper layer structure, a middle layer structure and a lower layer structure which are sequentially arranged from top to bottom;
The upper structure comprises an upper connecting plate, a crane bottom ring consisting of an outer ring circular hoop and an inner ring circular hoop is arranged in the middle of the upper surface of the upper connecting plate, and a bulge which is flush with the upper surface of the main leg cylinder sleeve is respectively arranged at four corners of the upper connecting plate;
The middle layer structure is fixed at the tops of the seventh cross beam, the eighth cross beam and the two longitudinal beams between the seventh cross beam and the eighth cross beam, and comprises four vertical support plates which are connected end to form a quadrilateral structure, an outer ring support and an inner ring support are respectively arranged at the positions corresponding to an outer ring round hoop and an inner ring round hoop in the upper layer structure, and vertical rib plates are arranged between the vertical support plates and the outer ring support as well as between the outer ring support and the inner ring support;
The lower layer structure comprises a seventh cross beam, an eighth cross beam and two longitudinal beams positioned between the seventh cross beam and the eighth cross beam, wherein outer vertical plates are respectively arranged on the outer sides of the two longitudinal beams positioned at the positions, the seventh cross beam, the eighth cross beam and the two longitudinal beams positioned at the positions are all arranged into a box-shaped structure, and vertical reinforcing ribs are respectively arranged between the inner vertical plates, the outer vertical plates and the two longitudinal beams.
2. The chassis of a lifting semitrailer according to claim 1, wherein the middle positions of the seventh cross beam and the eighth cross beam in the length direction are respectively provided with a deformation-resistant via hole, and the deformation-resistant via holes are arranged in a hexagonal structure.
3. The lifting semitrailer chassis of claim 1, wherein a plurality of fixed platform connection seats are provided at the bottom of the crane base, and a plurality of connection holes are provided at the bottom of the fixed platform connection seats.
4. The lifting semitrailer chassis of claim 1, wherein the frame is further provided with a lift base, the lift base being disposed on the right side rail at the second cross member.
5. The chassis of a hoisting semitrailer according to claim 1, wherein the front auxiliary support leg comprises a front fixed beam fixed on the top of a third cross beam of the frame and front movable support legs respectively rotatably connected to two ends of the front fixed beam, one ends of the front movable support legs far away from the front fixed beam are respectively provided with a front vertical oil cylinder sleeve, the rear auxiliary support leg comprises a rear fixed beam fixed on the top of a twelfth cross beam of the frame and rear movable support legs respectively rotatably connected to two ends of the rear fixed beam, and one ends of the rear movable support legs far away from the rear fixed beam are respectively provided with a rear vertical oil cylinder sleeve.
6. The chassis of a lifting semitrailer according to claim 5, wherein a front horizontal cylinder connecting seat is respectively arranged at the rear side surface of each front movable supporting leg and the outer side fourth cross beam of the two longitudinal beams of the frame, two oblique supporting plates are further arranged at the front side of the rear fixed beam, one ends of the oblique supporting plates are fixed at the tops of the two longitudinal beams, the other ends of the oblique supporting plates are fixed at the front side surface of the rear fixed beam, and a rear supporting leg cylinder connecting seat is respectively arranged at the front side surface of the rear movable supporting leg and the outer side surfaces of the two oblique supporting plates.
7. The chassis of a lifting semitrailer according to claim 6, wherein the front movable supporting leg and the rear supporting leg comprise two vertical plates which are arranged in parallel and opposite to each other, and a plurality of sealing plates which are respectively connected to the top and the bottom of the two vertical plates, one side of the vertical plates, which is far away from the frame, is bent downwards, a first circular arc reinforcing plate is respectively welded at the bending position of the outer sides of the two vertical plates, a stabilizing plate and an inclined plate are respectively arranged in the front movable supporting leg and the rear movable supporting leg, the stabilizing plate is respectively vertically arranged at a front horizontal cylinder connecting seat and a rear horizontal cylinder connecting seat, and the inclined plate is obliquely arranged at the bending position of the vertical plates.
8. The chassis of a hoisting semi-trailer according to claim 1, wherein the chassis is of a double-bridge structure, a first bridge through hole is formed in a tenth cross beam of the frame longitudinal beam, a second bridge through hole is formed in an eleventh cross beam of the frame longitudinal beam, the frame adopts an oil-gas spring independent suspension, and cantilever frames and oil-gas spring supports are arranged on the outer sides of the two longitudinal beams of the frame, corresponding to the first bridge through hole and the second bridge through hole.
9. A lifting semitrailer comprising the lifting semitrailer chassis of any one of claims 1-8 and a crane disposed on a crane base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211341771.8A CN115848500B (en) | 2022-10-28 | 2022-10-28 | A crane semi-trailer chassis and the crane semi-trailer used therein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211341771.8A CN115848500B (en) | 2022-10-28 | 2022-10-28 | A crane semi-trailer chassis and the crane semi-trailer used therein |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115848500A CN115848500A (en) | 2023-03-28 |
| CN115848500B true CN115848500B (en) | 2025-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211341771.8A Active CN115848500B (en) | 2022-10-28 | 2022-10-28 | A crane semi-trailer chassis and the crane semi-trailer used therein |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115848500B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2015108143A (en) * | 2015-03-10 | 2016-09-27 | Акционерное общество "Галичский автокрановый завод" | Self-propelled jib crane |
| CN110950256A (en) * | 2019-12-17 | 2020-04-03 | 泰安航天特种车有限公司 | Double-crane chassis and crane applied to same |
-
2022
- 2022-10-28 CN CN202211341771.8A patent/CN115848500B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2015108143A (en) * | 2015-03-10 | 2016-09-27 | Акционерное общество "Галичский автокрановый завод" | Self-propelled jib crane |
| CN110950256A (en) * | 2019-12-17 | 2020-04-03 | 泰安航天特种车有限公司 | Double-crane chassis and crane applied to same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115848500A (en) | 2023-03-28 |
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