Railway viaduct surface cantilever crane, railway long rail hoisting equipment and long rail hoisting method

Abstract

The invention provides a railway viaduct surface cantilever crane which comprises a cantilever beam assembly, a front portal frame assembly and a rear portal frame assembly, the cantilever beam assembly adopts a double-main-beam mechanism, a truss type hanger rail carrying pole is hung below the cantilever beam assembly, a four-point lifting plane is formed, the problem that a single-point lifting steel wire rope is prone to being wound can be solved, and the lifting efficiency is improved. Compared with a large overline gantry crane, the whole hanging bracket is relatively simple in structure, convenient to assemble and good in stability due to the adoption of a double-main-beam structure. The invention further provides railway long rail hoisting equipment and a long rail hoisting method, the equipment is suitable for hoisting the railway viaduct surface long rail, the vacancy of the railway viaduct surface long rail hoisting equipment is filled up, the double-leg double-beam cantilever crane which is erected between station tracks on the railway viaduct surface and does not intrude into a limit is adopted, the requirement for the geographical environment is low, and the hoisting efficiency is high. The floor area under the bridge is small, and the construction requirement that no hole is drilled in the beam face, and no expansion bolt is arranged on the beam face can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of railway construction and railway construction equipment, in particular to a railway viaduct cantilever crane, a railway long rail hoisting device and a long rail hoisting method BACKGROUND

[0002] With the rapid development of rail transit in China, the technical requirements of rail transit construction are also constantly improving. Different projects have different construction environments and different levels of difficulty. For conventional railway project construction, long rail access is achieved by using railway transportation, that is, entering the long rail storage and loading vehicle through the temporary railway access line into the newly built railway line for long rail laying. Temporary rail storage sites and transportation access lines need to be built. For the characteristics of the Xiong'an New Area to Beijing Daxing International Airport Express Line project, the entire line is composed of elevated sections, U-slot transitions and underground sections, which do not have rail connection conditions, and long rails need to be hoisted onto the elevated section. Currently, the industry uses overline gantry cranes for high-altitude hoisting operations, but overline gantry cranes have high requirements for installation conditions and geographical environment, and the scope of land acquisition and relocation is expanded, increasing costs. Moreover, the bridge section in the track laying base on the upper track of the project has a height of 15 meters, which is relatively high, and the overline gantry crane needs to be installed with high height and large span, which has high difficulty in installation and removal, high safety risk and high cost, which is not conducive to cost reduction and efficiency improvement. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a railway viaduct cantilever crane. Compared with large overline gantry cranes, the structure is relatively simple, easy to assemble, stable with a double girder structure, and has high safety, overcoming the problem of single-point lifting being prone to "twisting".

[0004] To solve the above problems, the present application provides a railway viaduct cantilever crane, which is suitable for installation on a double-track railway viaduct, characterized in that it comprises:

[0005] A cantilever beam assembly, the cantilever beam assembly comprises a first cantilever beam and a second cantilever beam, the first cantilever beam and the second cantilever beam are arranged in parallel and spaced apart;

[0006] A front portal assembly, the front portal assembly is arranged below the cantilever beam assembly and is used to support the cantilever beam assembly, and the upper end of the front portal assembly is detachably connected to the middle part of the first cantilever beam and the second cantilever beam, respectively, and the lower end of the front portal assembly is supported between the two tracks of the double-track railway viaduct;

[0007] A rear gantry assembly is spaced apart from the front gantry assembly, the upper ends of the rear gantry assembly are detachably connected to the tail portions of the first and second cantilever beams respectively, the lower ends of the rear gantry assembly are supported in the cable trough near the position of the double-track railway elevated bridge deck sound barrier foundation, and the rear gantry assembly is connected with the double-track railway elevated bridge deck sound barrier foundation.

[0008] The railway elevated bridge deck cantilever crane has the following characteristics: the front gantry assembly comprises a first front door column, a second front door column, a front door column connecting piece and a support base, the first front door column is located below the first cantilever beam and is arranged perpendicularly to the first cantilever beam, the upper end of the first front door column is detachably connected to the middle portion of the first cantilever beam, the second front door column is located below the second cantilever beam and is arranged perpendicularly to the second cantilever beam, the upper end of the second front door column is detachably connected to the middle portion of the second cantilever beam, the front door column connecting piece is arranged between the first and second front door columns, one end of the front door column connecting piece is fixedly connected to the first front door column, the other end of the front door column connecting piece is fixedly connected to the second front door column, and the support base is arranged between the two tracks of the double-track railway elevated bridge deck, and the lower ends of the first and second front door columns are connected to the support base.

[0009] The railway elevated bridge deck cantilever crane has the following characteristics: the support base comprises a box-shaped base plate and a pull rod, the box-shaped base plate is arranged between the two tracks of the double-track railway elevated bridge deck, and the opposite ends of the box-shaped base plate are supported on the edges of the double monolithic track beds of the double-track railway elevated bridge deck respectively, one end of the pull rod is detachably fixedly connected to the box-shaped base plate, the other end of the pull rod extends to the bottom of the steel rails of the double-track railway elevated bridge deck along the gap between the embedded sleepers of the monolithic track bed and is connected to the steel rails, and the lower ends of the first and second front door columns are fixedly connected to the support base.

[0010] The railway viaduct cantilever crane has the characteristics that the rear door frame assembly comprises a first rear door column, a second rear door column, a rear door column connecting beam and a connecting plate, the first rear door column is arranged below the tail of the first cantilever beam and is arranged perpendicularly to the first cantilever beam, the upper end of the first rear door column is detachably connected to the tail of the first cantilever beam, the second rear door column is arranged below the tail of the second cantilever beam and is arranged perpendicularly to the second cantilever beam, the upper end of the second rear door column is detachably connected to the tail of the second cantilever beam, the rear door column connecting beam is arranged between the first rear door column and the second rear door column and close to the sound barrier foundation of the double-track railway viaduct, one end of the rear door column connecting beam is fixedly connected to the first rear door column, the other end of the rear door column connecting beam is fixedly connected to the second rear door column, one end of the connecting plate is connected to the rear door column connecting beam, and the other end of the connecting plate is connected to the embedded bolt of the sound barrier foundation.

[0011] The railway viaduct cantilever crane has the characteristics that the cantilever beam assembly further comprises an upper door frame, a diagonal rod, a protective fence and a maintenance passage, the upper door frame is fixedly connected to the first cantilever beam and the second cantilever beam, the upper door frame is arranged on the side, opposite to the front door frame assembly, of the first cantilever beam and the second cantilever beam, and the upper door frame is arranged along the extension direction of the front door frame assembly, one end of the diagonal rod is connected to the upper part of the upper door frame, the other end of the diagonal rod is connected to the first cantilever beam or the second cantilever beam, the maintenance passage is fixedly connected to the first cantilever beam and the second cantilever beam and arranged between the first cantilever beam and the second cantilever beam, and the protective fence is arranged on both sides of the maintenance passage.

[0012] The railway viaduct cantilever crane has the characteristics that the cantilever beam assembly further comprises an upper door frame, a diagonal rod, a protective fence and a maintenance passage, the upper door frame is fixedly connected to the first cantilever beam and the second cantilever beam, the upper door frame is arranged on the side, opposite to the front door frame assembly, of the first cantilever beam and the second cantilever beam, and the upper door frame is arranged along the extension direction of the front door frame assembly, one end of the diagonal rod is connected to the upper part of the upper door frame, the other end of the diagonal rod is connected to the first cantilever beam or the second cantilever beam, the maintenance passage is fixedly connected to the first cantilever beam and the second cantilever beam and arranged between the first cantilever beam and the second cantilever beam, and the protective fence is arranged on both sides of the maintenance passage.

[0013] The cable wind rope comprises a first cable wind rope and a second cable wind rope, one end of the first cable wind rope is fixedly connected to the tail of the first cantilever beam, the other end of the first cable wind rope is connected to a corresponding fixed anchor point, one end of the second cable wind rope is fixedly connected to the tail of the second cantilever beam, the other end of the second cable wind rope is connected to a corresponding fixed anchor point, and the fixed anchor point is an embedded bolt of a catenary bottom or a cable bottom base of the double-track railway viaduct.

[0014] The railway viaduct cantilever crane has the characteristics that the cantilever beam assembly further comprises an upper door frame, a diagonal rod, a protective fence and a maintenance passage, the upper door frame is fixedly connected to the first cantilever beam and the second cantilever beam, the upper door frame is arranged on the side, opposite to the front door frame assembly, of the first cantilever beam and the second cantilever beam, and the upper door frame is arranged along the extension direction of the front door frame assembly, one end of the diagonal rod is connected to the upper part of the upper door frame, the other end of the diagonal rod is connected to the first cantilever beam or the second cantilever beam, the maintenance passage is fixedly connected to the first cantilever beam and the second cantilever beam and arranged between the first cantilever beam and the second cantilever beam, and the protective fence is arranged on both sides of the maintenance passage.

[0015] The application further provides a railway long rail hoisting device, characterized in that the device comprises a plurality of railway viaduct cantilever cranes as described above, and the plurality of railway viaduct cantilever cranes are sequentially and spacedly arranged along the direction of the double-track railway viaduct.

[0016] The railway long rail hoisting device as described above is characterized in that each of the plurality of railway viaduct cantilever cranes is provided with a sub-controller for controlling the operation of the corresponding railway viaduct cantilever crane.

[0017] The railway long rail hoisting device further comprises a general controller, which is connected with each sub-controller and used for collectively or individually controlling each railway viaduct cantilever crane through each sub-controller, and allowing or prohibiting each sub-controller to control the corresponding railway viaduct cantilever crane.

[0018] The application further provides a long rail hoisting method, characterized in that the method comprises the following steps:

[0019] Step 1: according to the direction of the viaduct, a section with relatively low height and straight line is selected as the section for long rail hoisting;

[0020] Step 2: according to the starting position of the long rail, the number and installation area of the railway viaduct cantilever cranes of the railway long rail hoisting device as described in claim 9 are determined correspondingly;

[0021] Step 3: according to the starting position of the long rail, the positions of the first and last railway viaduct cantilever cranes are determined by taking 10 meters inward from both ends, and the intermediate railway viaduct cantilever cranes are evenly arranged along the direction of the railway viaduct;

[0022] Step 4: the positions of the railway viaduct cantilever cranes are fine-tuned according to the interval between the sleepers on both sides and the positions of the embedded bolts of the sound barrier, so that the pull rod can be inserted into the sleeper interval,

[0023] Step 5: a counterweight is arranged at the rear end of the main beam;

[0024] Step 6: the plurality of railway viaduct cantilever cranes are synchronously lowered and connected with the pincers for hoisting the steel rail; then, the long rail train rotating bracket on the box girder beam surface is hoisted over the box girder beam surface, placed on the specified supporting wheel, and immediately subjected to anti-slip locking and reinforcement, and then moved out for laying.

[0025] The present application provides a steel rail hoisting device suitable for viaduct construction, which is relatively simple compared with a large cross-line portal crane structure, is convenient to assemble, is stable by adopting a double main beam structure, is high in safety, adopts PLC master and slave station control, adopts two sets of control systems of fixed control and mobile control, the mobile control adopts remote control, the remote control sets master control and sub-control, the sub-control remote controllers are arranged on the viaduct, workers are convenient to hook and unhook, operation is convenient, the integrated control and sub-control mode can ensure that the steel rail is hoisted to a transport vehicle safely and stably, and the number of operators is reduced and cost is saved. Meanwhile, the double-line track sleeper interval is used to extend into a pull rod to fix a front portal frame, a sound barrier is fixed by embedded bolts to fix a rear portal frame, and counterweight is added to improve a safety coefficient, so that stability of hoisting operation is ensured. The construction requirement that "no hole is drilled in a beam surface and no expansion bolt is used" can be met.

[0026] The application will be described in further detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate the preferred embodiments of the application and assist in

[0028] Figure 1 It is a perspective structural schematic view of a first visual angle of the railway viaduct cantilever crane in the embodiment of the present application.

[0029] Figure 2 It is an enlarged view of A of Figure 1

[0030] Figure 3 It is a perspective structural schematic view of a second visual angle of the railway viaduct cantilever crane in the embodiment of the present application.

[0031] Figure 4 It is a view of the railway viaduct cantilever crane in the embodiment of the present application along the extension direction of the viaduct.

[0032] Figure 5 It is a perspective structural schematic view of the railway viaduct cantilever crane installed on the viaduct in the embodiment of the present application.

[0033] Figure 6 It is an enlarged view of B of Figure 5

[0034] Figure 7 It is a perspective structural schematic view of the flat-burden lifting device in the embodiment of the present application.

[0035] Figure 8 It is a perspective structural schematic view of the railway long-rail hoisting device in the embodiment of the present application.

[0036] ​​Figure 9 The control connection block diagram of the railway long rail hoisting equipment in the embodiment of the present application.

[0037] Explanation of reference signs:

[0038] 10 - cantilever beam assembly; 11 - first cantilever beam; 12 - second cantilever beam;

[0039] 13 - upper portal; 14 - inclined pull rod; 15 - protective guardrail;

[0040] 16 - maintenance access; 20 - front portal assembly; 21 - first front door upright;

[0041] 22 - second front door upright; 23 - front door upright connecting member; 24 - support base;

[0042] 24-1 - box type base plate; 24-2 - pull rod; 24-3 - process hole;

[0043] 30 - rear portal assembly; 31 - first rear door upright; 32 - second rear door upright;

[0044] 33 - rear door upright connecting beam; 34 - connecting plate; 40 - hoisting electric hoist;

[0045] 41 - cable wind rope; 41-1 - first cable wind rope; 41-2 - second cable wind rope;

[0046] 42 - counterweight; 43 - sub-controller; 50 - general controller;

[0047] 60 - shoulder hoist; 61 - shoulder hoist body; 62 - rail clamping tongs. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0049] In order to solve the problem of no high bridge deck long rail hoisting equipment in the prior art, the present application provides a railway high bridge deck cantilever crane. It comprises a cantilever beam assembly 10, a front portal assembly 20 and a rear portal assembly 30, wherein the cantilever beam assembly 10 adopts a double main beam mechanism, which changes the original two-point linear hoisting into four-point planar hoisting, overcoming the problem of easy "twisting of dough" of two-point hoisting;

[0050] AsFigures 1 to 6 As shown, the cantilever crane on the railway viaduct includes a cantilever beam assembly 10, a front gantry assembly 20, and a rear gantry assembly 30. The cantilever beam assembly 10 includes a first cantilever beam 11 and a second cantilever beam 12, which are parallel and spaced apart. The front gantry assembly 20 is located below the cantilever beam assembly 10 and supports it. The upper end of the front gantry assembly 20 is detachably connected to the middle of the first cantilever beam 11 and the second cantilever beam 12, respectively, and the lower end of the front gantry assembly 20 is supported between the two tracks of the double-track railway viaduct. The rear gantry assembly 30 is spaced apart from the front gantry assembly 10. The upper end of the rear gantry assembly 30 is detachably connected to the tail of the first cantilever beam 11 and the second cantilever beam 12, respectively. The lower end of the rear gantry assembly 30 is supported near the foundation of the sound barrier on the double-track railway viaduct, and the rear gantry assembly 30 is connected to the foundation of the sound barrier on the double-track railway viaduct.

[0051] The lifting height of cantilever cranes on railway viaducts is large, generally exceeding 20 meters. Considering that a single electric hoist can easily cause the hook wire rope to "twist" at a lifting height of 20 meters, this embodiment will change the original single-beam single hoist to a double-beam double hoist, transforming the original single-point linear lifting into a double-point planar lifting, thus overcoming the problem of "twisting" during single-point lifting.

[0052] In this embodiment, the first cantilever beam 11 and the second cantilever beam 12 include 36a I-beams, which are welded to the lower part of the cantilever beam body as the running track of the electric hoist.

[0053] like Figure 1 and Figure 2 As shown, the front door frame assembly 20 includes a first front door pillar 21, a second front door pillar 22, a front door pillar connector 23, and a support base 24. The first front door pillar 21 is located below the first cantilever beam 11 and is perpendicular to the first cantilever beam 11. The upper end of the first front door pillar 21 is detachably connected to the middle of the first cantilever beam 11. The second front door pillar 22 is located below the second cantilever beam 12 and is perpendicular to the second cantilever beam 12. The upper end of the column 22 is detachably connected to the middle of the second cantilever beam 12. The front door column connector 23 is located between the first front door column 21 and the second front door column 22. One end of the front door column connector 23 is fixedly connected to the first front door column 21, and the other end of the front door column connector 23 is fixedly connected to the second front door column 22. The support base 24 is located between the two tracks of the double-track railway viaduct. The lower ends of the first front door column 21 and the second front door column 22 are both connected to the support base 24.

[0054] The first front door stand 21 and the second front door stand 22 are both square steel pipes in the embodiment, flanges are arranged at the top ends of the square steel pipes, and flanges are also arranged below the middle portions of the first cantilever beam 11 and the second cantilever beam 12.

[0055] As shown in Figures 1 to 6 The support base 24 includes a box-shaped bottom plate 24-1 and a pull rod 24-2, the box-shaped bottom plate 24-1 is arranged between the two lines of the double-line railway viaduct, and opposite ends of the box-shaped bottom plate 24-1 are respectively supported on the edges of the double monolithic track beds of the double-line railway viaduct, one end of the pull rod 24-2 is detachably fixedly connected with the box-shaped bottom plate 24-1, the other end of the pull rod 24-2 extends to the bottom of the steel rail of the double-line railway viaduct along the pre-buried sleeper gap of the monolithic track bed and is connected with the steel rail, and the lower ends of the first front door stand 21 and the second front door stand 22 are fixedly connected with the support base 24.

[0056] In the embodiment, the box-shaped bottom plate 24-1 is composed of upper and lower cover plates and webs and is welded into a box-shaped structure, and a process hole 24-3 is arranged in the middle portion. The box-shaped structure not only meets the relevant requirements of the hoisting equipment but also reduces the total amount of the equipment, improves the convenience and efficiency of transportation and installation.

[0057] In the embodiment, the lower ends of the first front door stand 21 and the second front door stand 22 are supported on the double-line railway viaduct after penetrating through the support base 24, and a support rib plate is arranged at the connection between the first front door stand 21 and the second front door stand 22 and the support base 24 to enhance the strength and stability of the connection between the first front door stand 21 and the second front door stand 22 and the support base 24.

[0058] In the embodiment, the number of the pull rods 24-2 is multiple, and the multiple pull rods 24-2 are respectively arranged on the two ends of the box-shaped bottom plate 24-1 close to the edges of the double monolithic track beds.

[0059] In the embodiment, the number of the pull rods 24-2 is eight, four pull rods 24-2 are arranged on one end of the box-shaped bottom plate 24-1 close to the edge of the double monolithic track bed, and four pull rods 24-2 are also arranged on the other end of the box-shaped bottom plate 24-1 close to the edge of the double monolithic track bed.

[0060] In the embodiment, the pull rod 24-2 is detachably connected with the support base 24 through bolts, and a connecting hole is arranged at the front end of the pull rod 24-2,

[0061] In this embodiment, the pull rod 24-2 is welded by steel plate, the thickness of the front end is less than that of the rear end, while meeting the requirement that the front end of the pull rod 24-2 can be inserted into the gap between the embedded sleepers of the monolithic track bed and under the steel rail, the rear end with increased thickness can effectively improve the carrying capacity of the pull rod 24-2. By welding with steel plate, the strength requirement can be met while effectively reducing the weight of the equipment, improving the efficiency and convenience of transportation and installation.

[0062] In this embodiment, the first front door column 21 and the second front door column 22 of the front door frame assembly 20 serve as the main columns of the railway viaduct cantilever crane, and in addition to ensuring the bearing pressure, positioning and stability are the key performance requirements. Since the bridge erection requires that the beam surface installation equipment cannot "drill a hole and install an expansion bolt", the railway viaduct cantilever crane in this embodiment uses the edges of the double monolithic track bed as support, and designs a box-type bottom plate 24-1 that can span the two edges; four pull rods 24-2 are designed on both sides of the box-type bottom plate 24-1, passing through the sleeper bottom and then being connected to the steel rail by rail fasteners. In this way, the primary problem of the main columns being unable to be firmly "rooted" with the beam surface is perfectly solved. When the front door frame assembly 20 is laid out, rubber pads and / or heightening pads can be provided below the box-type bottom plate 24-1 and the first front door column 21 and the second front door column 22 to ensure that the first front door column 21 and the second front door column 22 can be vertically arranged and that each support point can be uniformly stressed. The rubber pads and heightening pads can also protect the bridge surface.

[0063] As shown in Figure 1 and Figure 3 , the rear door frame assembly 30 includes a first rear door column 31, a second rear door column 32, a rear door column connecting beam 33 and a connecting plate 34. The first rear door column 31 is located below the tail of the first cantilever beam 11 and is arranged perpendicularly to the first cantilever beam 11. The upper end of the first rear door column 31 is detachably connected to the tail of the first cantilever beam 11. The second rear door column 32 is located below the tail of the second cantilever beam 12 and is arranged perpendicularly to the second cantilever beam 12. The upper end of the second rear door column 32 is detachably connected to the tail of the second cantilever beam 12. The rear door column connecting beam 33 is arranged between the first rear door column 31 and the second rear door column 32 near the double-track railway viaduct sound barrier foundation. One end of the rear door column connecting beam 33 is fixedly connected to the first rear door column 31, and the other end of the rear door column connecting beam 33 is fixedly connected to the second rear door column 32. One end of the connecting plate 34 is connected to the rear door column connecting beam 33, and the other end of the connecting plate 34 is connected to the sound barrier foundation embedded bolt.

[0064] In the embodiment, the rear gantry assembly 30 includes a first rear door column 31 and a second rear door column 32, both of which are square steel pipe structures, the lower end of the square steel pipe is provided with a bottom plate, and the upper end is provided with a flange. The first rear door column 31 is detachably connected with the tail of the first cantilever beam 11 through the flange. The second rear door column 32 is detachably connected with the tail of the second cantilever beam 12. The flange connection adopts conventional bolt connection. The rear door column connecting beam 33 is connected with the first rear door column 31 and the second rear door column 32 in a welded manner.

[0065] In the embodiment, the height of the cantilever crane main beam of the railway elevated bridge is as high as 28 meters, and the long rail is hoisted outside the beam edge. In order to improve the balance of the main beam under the influence of unknown external forces such as wind resistance, a rear gantry assembly 30 is designed at the rear end of the main beam. The rear gantry assembly 30 not only provides support, but also solves the problem of "rooting" of the rear gantry assembly 30 of the railway elevated bridge cantilever crane through the connection of the connecting plate 34 and the embedded bolt of the sound barrier. The connecting plate 34 can be welded and fixed on site after the main body is installed, according to the probability of the rear gantry assembly 30 meeting the embedded bolt. In addition, considering the influence of unknown external forces such as friction and resistance during the operation of the front part of the machine, a counterweight can also be added to the rear of the cantilever beam assembly 10. In the embodiment, a 6-ton counterweight is designed.

[0066] In the embodiment, in order to facilitate maintenance, a ladder is arranged on the side of the first rear door column 31 or the second rear door column 32 of the rear gantry assembly 30, and a falling protection ring is installed upward 2m away from the bridge surface to ensure the safety of personnel climbing.

[0067] As shown in Figure 1 and Figure 2 , the cantilever beam assembly 10 further includes an upper gantry 13, a diagonal rod 14, a protective guardrail 15, and a maintenance passage 16. The upper gantry 13 is fixedly connected with the first cantilever beam 11 and the second cantilever beam 12, and is located on the side opposite to the front gantry assembly 20 of the first cantilever beam 11 and the second cantilever beam 12. The upper gantry 13 is arranged in the direction of extension of the front gantry assembly 20. One end of the diagonal rod 14 is connected with the upper part of the upper gantry 13, and the other end of the diagonal rod 14 is connected with the first cantilever beam 11 or the second cantilever beam 12. The maintenance passage 16 is fixedly connected with the first cantilever beam 11 and the second cantilever beam 12 and is located between the first cantilever beam 11 and the second cantilever beam 12. The protective guardrail 15 is arranged on both sides of the maintenance passage 16.

[0068] In the embodiment, the passage plane of the maintenance passage 16 is lower than the top plane of the first cantilever beam 11 and the second cantilever beam 12.

[0069] In this embodiment, the maintenance passage 16 adopts a lower bag type design. Since the cantilever beam suspends the portal assembly 20 by 8 meters, if the lower hanging electric hoist 40 fails, the maintenance personnel in the air is very dangerous. The application utilizes the inner space of the first cantilever beam 11 and the second cantilever beam 12 to design a lower bag type maintenance column. It does not affect the height of the overhead line, does not increase the wind resistance by bagging wind, and at the same time creates a safe fixed basket for maintenance personnel. At the same time, the personnel walking maintenance passage 16 is arranged on the upper part of the cantilever beam 16, and a guardrail is arranged beside the maintenance passage 16 to prevent personnel from falling.

[0070] In this embodiment, the number of diagonal rods 14 is 6, two groups, the upper end of the diagonal rod 14 is connected with the ear plate at the upper end of the upper portal 13, and the lower end of the diagonal rod 14 is connected with the ear plate arranged on the first cantilever beam 11 or the second cantilever beam 12. Among them, the upper end of the first group of diagonal rods 14 is connected with the ear plate at the upper end of the upper portal 13, and the lower end of the first group of diagonal rods 14 is connected with the ear plate welded at the front of the first cantilever beam 11 and the second cantilever beam 12 respectively. The upper end of the second group of diagonal rods 14 is connected with the ear plate at the upper end of the upper portal 13, and the lower end of the second group of diagonal rods 14 is connected with the ear plate welded at the middle of the first cantilever beam 11 and the second cantilever beam 12 respectively. The upper end of the third group of diagonal rods 14 is connected with the ear plate at the upper end of the upper portal 13, and the lower end of the third group of diagonal rods 14 is connected with the ear plate welded at the tail of the first cantilever beam 11 and the second cantilever beam 12 respectively. To enhance the bending strength of the main beam.

[0071] As shown in Figure 1 and 3 The railway viaduct cantilever crane also includes a lifting electric hoist 40 and a cable wind rope 41. The number of lifting electric hoists 40 is two, and the two lifting electric hoists 40 are arranged on the first cantilever beam 11 and the second cantilever beam 12 respectively. The cable wind rope 41 includes a first cable wind rope 41-1 and a second cable wind rope 41-2. One end of the first cable wind rope 41-1 is fixedly connected with the tail of the first cantilever beam 11, and the other end of the first cable wind rope 41-1 is connected with a corresponding fixed anchor point. One end of the second cable wind rope 41-2 is fixedly connected with the tail of the second cantilever beam 12, and the other end of the second cable wind rope 41-2 is connected with a corresponding fixed anchor point. The fixed anchor point is a double-line railway viaduct catenary rod bottom or a cable bottom base embedded bolt.

[0072] In this embodiment, the lifting electric hoist 40 adopts a national standard product. The rated lifting capacity of a single electric hoist is 3t, and the maximum lifting height is 20.5m. The electric hoist running track is provided with a buffer stop at both ends, and the electric hoist is provided with a rain cover.

[0073] In this embodiment, the two cable wind ropes 41 are fixed to the bridge side sound barrier base or the catenary rod base in an eight-character shape. The fixed position is determined according to the distance on site.

[0074] As shown in Figures 1 to 7As shown, the railway viaduct cantilever crane in the embodiment further comprises a pole sling 60, and the pole sling 60 comprises a pole sling body 61 and rail clamps 62. The number of the rail clamps 62 is four, wherein two rail clamps 62 are arranged at one end of the pole sling body 61, and the other two rail clamps 62 are arranged at the other end of the pole sling body 61.

[0075] The pole sling body 61 in the embodiment is a triangular truss.

[0076] The pole sling 60 in the embodiment is 10620mm long, 500mm wide and 600mm high. The pole sling 60 is mainly welded by end plates, rectangular tubes, square tubes, round tubes, rib plates, connecting plates and steel plates. The upper part of the pole sling 60 is welded with round steel lifting lugs and lifting ring reinforcing plates into a hook lifting ring, and there are two lifting rings, which are connected with the hooks of the two lifting electric hoists 40 respectively. The rail clamps 62 are connected with the pole sling connecting plates by shackles, and are used as additional rail slings.

[0077] The railway viaduct cantilever crane hoists the long rail through the pole sling 60. In the embodiment, in order to ensure the straightness of the hoisting of the long rail, the rigid bending resistance of the rail is considered. During the hoisting process, the pole sling 60 is added, the distance between the cantilever cranes is increased, the equipment investment is reduced, and the straightness of the long rail is ensured. At the same time, four rail clamps 62 are arranged on the pole sling 60, and two rails can be hoisted at the same time, and the efficiency is doubled.

[0078] As shown in Figure 1 and Figure 3 The railway viaduct cantilever crane further comprises a counterweight 42, and the counterweight 42 is arranged at the tail between the first cantilever beam 11 and the second cantilever beam 12.

[0079] In the embodiment, the railway viaduct cantilever crane can be equipped with a counterweight at the rear end of the cantilever beam according to the weight of the hoisted rail, the sling and the self weight of the cantilever crane, so as to form a balance force and ensure the safety of the cantilever crane. The counterweight is selected to have a modular structure and can be directly hung between the tail of the first cantilever beam 11 and the second cantilever beam 12.

[0080] In the embodiment, in order to ensure the night construction, the railway viaduct cantilever crane is provided with sufficient lighting devices, and the lighting devices adopt LED lamps. At the same time, the lifting equipment is provided with lifting double limit and stroke limit. In order to ensure that the equipment is not overloaded, a lifting weight limiter is arranged on the steel wire rope of the electric hoist and connected to the control circuit, and the overload will automatically alarm and automatically disconnect the power supply. The cantilever group crane is provided with a bell and an alarm, which plays a prompting and warning role during operation.

[0081] The application further discloses a railway long rail hoisting device, as shown in Figure 3As shown, it comprises a plurality of the above railway viaduct cantilever cranes, and the plurality of railway viaduct cantilever cranes are sequentially and spacedly arranged along the direction of the double-track railway viaduct.

[0082] As shown, Figure 8 and Figure 9 As shown, each of the plurality of railway viaduct cantilever cranes is provided with a sub-controller 43 for controlling the operation of the corresponding railway viaduct cantilever crane; the railway long rail hoisting equipment further comprises a general controller 50 connected with each sub-controller 43, and used for collectively or respectively controlling each railway viaduct cantilever crane through each sub-controller 43, and allowing or prohibiting each sub-controller 43 to control the corresponding railway viaduct cantilever crane.

[0083] The power supply of the railway viaduct cantilever crane adopts external three-phase five-wire network power supply, and all control lines and components adopt 36V low-voltage control. The controller adopts a PLC controller. A control mode of linkage of main control and sub-station control is adopted, the electric hoists of the plurality of railway viaduct cantilever cranes have the functions of simultaneous linkage and single-group sequential starting, and can meet the requirements of synchronous lifting, translation, loading and single-motion fine adjustment of the steel rails. The control system is provided with a general control and a sub-control system, and is provided with fixed and mobile controls. The fixed control is controlled by a button, and the mobile control is controlled by a remote controller. A single double-main-beam cantilever crane remote controller and a general control remote controller are arranged on the bridge. The workers can conveniently attach and detach hooks, and the operation is convenient. The adoption of the centralized control and sub-control mode can ensure that the steel rails are safely and stably lifted to the transport vehicle, and meanwhile, the operation personnel are reduced and the cost is saved.

[0084] The application further discloses a long rail hoisting method, which comprises the following steps:

[0085] Firstly, according to the direction of the viaduct, a section with a relatively low height, a straight line and a large curvature radius is selected as a long rail hoisting section.

[0086] Secondly, according to the starting position of the long rail, the positions of the cantilever group cranes are determined. The positions of 1# and 5# cantilever cranes are determined at 10m from both ends, the positions of 2# and 4# cantilever cranes are determined at 20m from both ends, and the position of 3# cantilever crane is determined at the center.

[0087] Thirdly, the positions are rough positions, and fine adjustment is further made according to the interval between the two side sleepers to ensure that the pull rod can be inserted into the interval between the sleepers and fixed to the upper steel rail, and meanwhile, the positions of the sound barrier embedded bolts are considered, the electrified poles are avoided, and the wind cable bases are considered.

[0088] Thirdly, after the front upright column is positioned, the rear upright column is erected in the cable groove. After the main beam is leveled on the bridge deck, the rear upright column beam is connected with the flange plate fixed on the corresponding sound barrier embedded bolt by welding.

[0089] Then, the counterweight block is hoisted at the rear end of the main beam.

[0090] Finally, the beam cantilever crane under the track, pre-parking long rail train. Ground double 100 meters long rail, through the transport line to the designated location, 5 synchronous cantilever crane drop down the pole with double rail clamp, clamp rail top. Then, the synchronous hoist over the box girder beam pre-parking long rail train rotating bracket, placed in the designated pulley, then immediately anti-slip locking reinforcement, move out of the laying.

[0091] Using railway long rail hoisting equipment, on average every 10 minutes hoisting 2 100 meters rail, 28 per train, need 2.5 hours, every class dress 4 long rail train 112. Can greatly improve the construction efficiency, ahead of schedule to complete the scheduled period.

[0092] The above only for the preferred embodiments of the present application, and not for limiting the present application, for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A cantilever crane for railway viaducts, the cantilever crane being suitable for installation on a double-track railway viaduct, characterized in that, include: The cantilever beam assembly (10) includes a first cantilever beam (11) and a second cantilever beam (12), wherein the first cantilever beam (11) and the second cantilever beam (12) are arranged in parallel and at intervals. A front gantry assembly (20) is disposed below the cantilever beam assembly (10) and is used to support the cantilever beam assembly (10). The upper end of the front gantry assembly (20) is detachably connected to the middle of the first cantilever beam (11) and the second cantilever beam (12), respectively. The lower end of the front gantry assembly (20) is supported between the two tracks of the double-track railway viaduct. The rear gantry assembly (30) is spaced apart from the front gantry assembly (10). The upper end of the rear gantry assembly (30) is detachably connected to the tail ends of the first cantilever beam (11) and the second cantilever beam (12). The lower end of the rear gantry assembly (30) is supported in the cable trough near the foundation of the sound barrier on the double-track railway viaduct. The rear gantry assembly (30) is connected to the foundation of the sound barrier on the double-track railway viaduct.

2. The cantilever crane for railway viaducts according to claim 1, characterized in that, The front door frame assembly (20) includes a first front door pillar (21), a second front door pillar (22), a front door pillar connector (23), and a support base (24). The first front door pillar (21) is located below the first cantilever beam (11) and is perpendicular to the first cantilever beam (11). The upper end of the first front door pillar (21) is detachably connected to the middle part of the first cantilever beam (11). The second front door pillar (22) is located below the second cantilever beam (12) and is perpendicular to the second cantilever beam (12). The upper ends of the two front door pillars (22) are detachably connected to the middle of the second cantilever beam (12). The front door pillar connector (23) is located between the first front door pillar (21) and the second front door pillar (22). One end of the front door pillar connector (23) is fixedly connected to the first front door pillar (21), and the other end of the front door pillar connector (23) is fixedly connected to the second front door pillar (22). The support base (24) is located between the two lines of the double-track railway viaduct. The lower ends of the first front door pillar (21) and the second front door pillar (22) are both connected to the support base (24).

3. A cantilever crane for railway viaducts according to claim 2, characterized in that, The support base (24) includes a box-shaped base plate (24-1) and a tie rod (24-2). The box-shaped base plate (24-1) is set between the two tracks of the double-track railway viaduct, and the two opposite ends of the box-shaped base plate (24-1) are respectively supported on the edge of the double integral track bed of the double-track railway viaduct. One end of the tie rod (24-2) is detachably and fixedly connected to the box-shaped base plate (24-1), and the other end of the tie rod (24-2) extends along the gap between the pre-embedded sleepers of the integral track bed to the bottom of the rail of the double-track railway viaduct and is connected to the rail.

4. A cantilever crane for railway viaducts according to claim 1, characterized in that, The rear door frame assembly (30) includes a first rear door pillar (31), a second rear door pillar (32), a rear door pillar connecting beam (33), and a connecting plate (34). The first rear door pillar (31) is located below the tail of the first cantilever beam (11) and is perpendicular to the first cantilever beam (11). The upper end of the first rear door pillar (31) is detachably connected to the tail of the first cantilever beam (11). The second rear door pillar (32) is located below the tail of the second cantilever beam (12) and is perpendicular to the second cantilever beam (12). The upper end of the gate post (32) is detachably connected to the tail of the second cantilever beam (12). The rear gate post connecting beam (33) is located between the first rear gate post (31) and the second rear gate post (32) near the foundation of the sound barrier on the double-track railway viaduct. One end of the rear gate post connecting beam (33) is fixedly connected to the first rear gate post (31), and the other end of the rear gate post connecting beam (33) is fixedly connected to the second rear gate post (32). One end of the connecting plate (34) is connected to the rear gate post connecting beam (33), and the other end of the connecting plate (34) is connected to the pre-embedded bolts of the sound barrier foundation.

5. A cantilever crane for railway viaducts according to claim 1, characterized in that, The cantilever beam assembly (10) also includes an upper gantry (13), a tie rod (14), a guardrail (15), and a maintenance access (16). The upper gantry (13) is fixedly connected to the first cantilever beam (11) and the second cantilever beam (12). The upper gantry (13) is located on the side of the first cantilever beam (11) and the second cantilever beam (12) opposite to the front gantry assembly (20), and the upper gantry (13) extends along the direction of the front gantry assembly (20). The diagonal brace (14) is configured such that one end is connected to the upper part of the upper gantry (13), and the other end is connected to the first cantilever beam (11) or the second cantilever beam (12). The maintenance passage (16) is fixedly connected to the first cantilever beam (11) and the second cantilever beam (12) and is located between the first cantilever beam (11) and the second cantilever beam (12). The protective railing (15) is set on both sides of the maintenance passage (16).

6. A cantilever crane for railway viaducts according to claim 1, characterized in that, The railway viaduct cantilever crane also includes a lifting electric hoist (40) and a guy rope (41). There are two lifting electric hoists (40), which are respectively installed on the first cantilever beam (11) and the second cantilever beam (12). The guy rope (41) includes a first guy rope (41-1) and a second guy rope (41-2). One end of the first guy rope (41-1) is fixedly connected to the tail of the first cantilever beam (11), and the other end of the first guy rope (41-1) is connected to a corresponding fixed anchor point. One end of the second guy rope (41-2) is fixedly connected to the tail of the second cantilever beam (12), and the other end of the second guy rope (41-2) is connected to a corresponding fixed anchor point. The fixed anchor point is a pre-embedded bolt at the bottom of the contact network pole of the double-track railway viaduct or in the foundation of the cable base.

7. A cantilever crane for railway viaducts according to claim 1, characterized in that, The railway viaduct cantilever crane also includes a counterweight (42), which is installed at the tail between the first cantilever beam (11) and the second cantilever beam (12).

8. A railway long rail hoisting device, characterized in that, It includes multiple railway viaduct cantilever cranes as described in any one of claims 1 to 7, with the multiple railway viaduct cantilever cranes arranged sequentially at intervals along the direction of the double-track railway viaduct.

9. A railway long rail hoisting device according to claim 8, characterized in that, Each of the aforementioned railway viaduct cantilever cranes is equipped with a sub-controller (43) for controlling the operation of the corresponding railway viaduct cantilever crane; The railway long rail hoisting equipment also includes a main controller (50), which is connected to each sub-controller (43) and is used to centrally or separately control each railway viaduct cantilever crane through each sub-controller (43), and to allow or prohibit each sub-controller (43) from controlling the corresponding railway viaduct cantilever crane.

10. A method for hoisting long rails, characterized in that, Includes the following steps: Step 1: Based on the direction of the viaduct, select a section with relatively low height and a relatively straight line as the site for long rail hoisting; Step 2: Based on the starting position of the long rail, determine the number and installation area of ​​the railway viaduct cantilever cranes of the railway long rail hoisting equipment described in claim 9; Step 3: Based on the starting position of the long rail, determine the positions of the first and last railway viaduct cantilever cranes 10 meters inward from both ends, and evenly distribute the middle railway viaduct cantilever cranes along the direction of the railway viaduct. Step 4: Fine-tune the position of the cantilever crane on the railway viaduct according to the sleeper spacing on both sides and the position of the pre-embedded bolts of the sound barrier to ensure that the tie rod can extend into the sleeper spacing; Step 5: Hoist the counterweight block at the rear end of the main beam; Step Six: Multiple railway viaduct cantilever cranes are lowered simultaneously and connected to the rails to be hoisted; then, the rotating brackets for the long rail trains, which are pre-positioned on the box girder surface, are lifted simultaneously and placed on designated rollers. Subsequently, anti-slip locking and reinforcement are immediately carried out, and the rails are moved out for laying.

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