CN113897866A - Steel box girder installation device and method for existing railway transportation line - Google Patents

Abstract

The utility model provides a steel box girder installation device and method for existing railway transportation line, include set up at the permanent support side of bridge and be used for as support (1) temporarily, set up on support (1) and be used for increasing the pad mound group of handling to the steel box girder, be used for producing telescopic cylinder (5) of displacement thrust to the steel box girder, after lifting the steel box girder, through support (1) and pad mound group, realized carrying out clearance formula support to the steel box girder on the permanent support of bridge, after placing the steel box girder at pad mound group, through telescopic cylinder (5), realized carrying out the regulation of displacement position to the steel box girder of suspension on the permanent support of bridge, consequently improved the steel box girder installation effect on existing railway transportation line.

Description

Steel box girder installation device and method for existing railway transportation line

Technical Field

The invention relates to a steel box girder mounting device and a method, in particular to a steel box girder mounting device and a method for an existing railway transportation line.

Background

The steel-concrete composite bridge has the advantages of a steel structure and a concrete structure, has the advantages of factory integration operation, short construction period, large span, material saving, small influence on traffic and the like, but in the construction process of the steel-concrete composite bridge, the operation of a crane station on a steel box girder is not allowed at the existing railway transportation line, the construction environment is relatively complex, the hoisting operation condition is extremely limited, in addition, the installation of the buttress adopts the technical measures of a sand box, a steel base plate, sulfur mortar and the like to realize the installation and the unloading, the manufacture and the installation of the buttress can occupy overlong time to seriously influence the railway transportation, the use of the sulfur mortar can cause pollution to the environment, the unloading is inconsistent and is easy to cause potential safety hazard, thereby influencing the installation effect of the steel box girder on the existing railway transportation line,

how to effectively solve the problem of pier connection, ensure safety and quality and improve the hoisting operation efficiency, the invention solves the technical problems to be solved,

the technical scheme of the invention is made based on the technical book of filing of the present application, which is provided by the applicant at 7/18/2021 and has the function of solving the actual technical problems in the working process, and the technical problems, technical features and technical effects existing in the similar patent documents and the background art are obtained through retrieval.

Disclosure of Invention

The object of the invention is a steel box girder installation device for existing railway transportation lines,

the invention aims to provide a method for installing a steel box girder for an existing railway transportation line.

In order to overcome the technical disadvantages, the present invention aims to provide a steel box girder installation apparatus and method for an existing railway transportation line, thereby improving the installation effect of the steel box girder on the existing railway transportation line.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a steel box girder installation device for existing railway transportation line, includes the support that sets up at the permanent support side of bridge and be used for as temporary support, set up on the support and be used for increasing the pad mound group of handling to the steel box girder, be used for producing the telescoping cylinder of displacement thrust to the steel box girder.

Due to the design of the support, the pad pier group and the telescopic cylinder, after the steel box girder is lifted, the steel box girder is supported on the permanent bridge support in a clearance type through the support and the pad pier group, and after the steel box girder is placed on the pad pier group, the displacement position of the steel box girder suspended on the permanent bridge support is adjusted through the telescopic cylinder, so that the installation effect of the steel box girder on the existing railway transportation line is improved.

The invention designs that a support, a pad pier group and a telescopic cylinder are connected with each other in a mode of adjusting the displacement position of a steel box girder suspended on a permanent bridge support.

The invention designs that the pad pier group is arranged to comprise a first pad pier and a second pad pier.

The technical effects of the three technical schemes are as follows: the position of the steel box girder is adjusted in the supported state, so that the steel box girder is not adjusted in the lifted state any more, the mounting precision of the steel box girder on a permanent support of a bridge is improved, and the influence on the existing railway transportation line is reduced.

The invention designs that the multifunctional mattress also comprises a first accessory device, the first accessory device is arranged on the pad pier group, and the first accessory device is arranged as a stacking plate.

The bamboo plywood is characterized by further comprising a second accessory device, the second accessory device is arranged on the support, and the second accessory device is a bamboo plywood.

The technical effects of the technical scheme are as follows: integrated mounting of other components is achieved.

The invention designs that a first pad pier, a second pad pier, a telescopic cylinder and a bamboo plywood are respectively arranged on a bracket, and a stacking plate is arranged on the second pad pier.

The technical effects of the technical scheme are as follows: the basic technical scheme of the invention is formed by the support, the first pad pier, the second pad pier, the stacking plate, the telescopic cylinder and the bamboo plywood, and the technical problem of the invention is solved.

The invention designs that the bracket is arranged to comprise a distribution beam, a first upright post, a second upright post, a third upright post and an inner frame, one end of the distribution beam is connected with the upper end of the first upright post, the other end of the distribution beam is connected with the upper end of the third upright post, the middle part of the distribution beam is connected with the upper end of the second upright post, one corner of the lower end of the inner frame is connected with the upper end of the inner side of the first upright post, the other corner of the lower end of the inner frame is connected with the upper end of the inner side of the third upright post, the upper end corner of the inner frame is connected with the upper end of the second upright post, the lower end transverse part of the inner frame is connected with the second upright post, the upper end surface of the distribution beam is respectively connected with a first cushion pier, a second cushion pier and a telescopic cylinder in a contact way, and the lower end transverse part of the inner frame is connected with a bamboo plywood in a contact way, the distribution beam, the first upright post, the second upright post and the third upright post are respectively arranged into a rectangular tubular body, and the built-in frame is arranged into a triangular frame-shaped body.

The technical effects of the technical scheme are as follows: arrange the support along the steel box girder through the support, satisfied the support needs to the steel box girder of various models, through the connection of built-in frame, improved the support intensity of support, through first stand, second stand and third stand, realized that the support carries out the large-span and supports the setting.

The invention designs that the telescopic cylinder is arranged into a two-section type telescopic cylinder and the lower end surface part of the telescopic cylinder is connected with the bracket in a contact way.

The technical effects of the technical scheme are as follows: the hydraulic driving force is used as the position adjusting power for the steel box girder, and the slow speed adjusting setting for the steel box girder is realized.

The invention provides that the first pad pier is arranged into a rectangular tubular body with a port part blocking plate, and the lower end surface part of the first pad pier is arranged to be in contact connection with the bracket.

The invention designs that the second pad pier is a rectangular tubular body with a port part blocking plate, the lower end surface part of the second pad pier is connected with the bracket in a contact way, one side surface part of the upper end surface of the second pad pier is connected with the code plate,

the technical effects of the two technical schemes are as follows: the line surface support of the steel box girder is realized, and the friction acting force of the steel box girder is reduced.

The invention designs that the stacking plate is arranged into a rectangular sheet body and the lower end surface part of the stacking plate is connected with the second pad pier.

The technical effects of the technical scheme are as follows: the steel box girders positioned on the outer side surfaces are positioned and used as standard correction positions for position adjustment between the steel box girders, and the hoisting efficiency and the safety performance of the steel box girders are improved.

The invention designs that the bamboo plywood is a rectangular platy body, and the end head of the bamboo plywood is connected with the bracket.

The technical effects of the technical scheme are as follows: the setting of operation platform has been realized, has made things convenient for and has carried out the adjustment operation to the steel case roof beam.

The invention designs that a support, a first pad pier, a second pad pier and a telescopic cylinder are distributed in a mode of supporting according to adjustable installation positions, the support, the first pad pier, the second pad pier, the telescopic cylinder and a stacking plate are distributed in a mode of positioning the side faces, the support, the first pad pier, the second pad pier, the telescopic cylinder and a bamboo plywood are distributed in a mode of arranging an underlying operation table, a distribution beam, two first upright columns, two second upright columns, two third upright columns and an internal frame are arranged to form a group of three leg supports, and one support is arranged to comprise two groups of three leg supports.

The invention designs that the telescopic cylinder is arranged to comprise a main cylinder body, an auxiliary cylinder body, a supporting claw, an intermediate plate, a screw rod, a nut and a pressing claw, wherein the upper end part of the intermediate plate is respectively provided with a first leakage hole body, the middle part of the intermediate plate is provided with a long-strip hole body, the end surface part of the lower end of the transverse part of the pressing claw is provided with a tooth body, the transverse part of the pressing claw is provided with a second leakage hole body, one side part of the intermediate plate is connected with an outer joint shell of the main cylinder body, the other side part of the intermediate plate is connected with an outer joint shell of the auxiliary cylinder body, a telescopic joint of the auxiliary cylinder body is connected with the supporting claw, the vertical part of the pressing claw is connected with the screw rod, the vertical part of the pressing claw is connected with the inner side surface part of the intermediate plate in a contact manner, the screw rod is arranged in the long-strip hole body, the nut is connected with the screw rod in a threaded manner, the end surface part of the inner end of the nut is connected with the outer side surface part of the intermediate plate in a contact manner, and the two intermediate plates are arranged between the main cylinder body and the auxiliary cylinder body The utility model discloses a hydraulic pressure jaw and the hydraulic pressure jaw, the hydraulic pressure jaw sets up the screw rod and the intermediate lamella, a screw rod sets up on pressing the claw and two nuts set up respectively between screw rod and intermediate lamella, main cylinder body and vice cylinder body set up respectively to two section formula telescoping cylinder and hold in the palm the claw and set up to Y font dendritic, the intermediate lamella sets up to the rectangle lamina and the screw rod sets up to the shaven head screw rod, the nut sets up to hexagon nut and presses the claw to set up to the L font frame body that the horizontal portion has U font cell body, first hole body and the second that leaks sets up respectively to the circular port body and rectangular hole body sets up to the rectangular port body, the tooth body sets up to the sawtooth tooth.

The technical effects of the technical scheme are as follows: the integrated arrangement of the positioning telescopic cylinder and the displacement thrust cylinder is realized, the occurrence of the phenomenon that the displacement thrust cylinder generates partial slip in the initial state is prevented, the safety performance of the operation process is improved, and the double-end contact positioning is realized through the supporting claw and the pressing claw.

The invention designs a method for mounting a steel box girder for an existing railway transportation line, which comprises the following steps: after the steel box girder is lifted, the steel box girder is supported on the permanent bridge support in a clearance mode through the support and the pad pier group, and after the steel box girder is placed on the pad pier group, the steel box girder suspended on the permanent bridge support is adjusted in displacement position through the telescopic cylinder.

The invention designs that the method comprises the following steps: the telescopic cylinder and the pad pier group are used for installing the steel box girder on the permanent bridge support on the outer side surface of the support, and the steel box girder on the outer side surface of the support is installed on the permanent bridge support through the hoisting device.

The invention designs that the method comprises the following steps: for the installation of steel box beams with side extensions,

prefabricating a supporting foundation pit opening on a side surface part of a permanent bridge support, placing a first upright post, a second upright post and a third upright post of two groups of three-leg supports into the supporting foundation pit opening, pouring cement mortar into the supporting foundation pit opening, installing a first support on the side surface part of the permanent bridge support, installing a second support on the side surface part of the permanent bridge support, respectively placing second cushion piers on an outer side surface of a distribution beam of the first support and an outer side surface of a distribution beam of the second support, enabling a code plate positioned on the second cushion pier to be positioned on the outer side surface, respectively placing first cushion piers on an inner side surface of the distribution beam of the first support and an inner side surface of the distribution beam of the second support, placing an end head of a steel box beam I on the first cushion pier and the second cushion pier positioned on the first support by using a crane, enabling the outer side surface part of the steel box beam I to be attached to the code plate positioned on the first support, placing the end of a steel box girder II on a first pad pier on a first support by using a crane, placing the end of a steel box girder III on the first pad pier on a second support by using the crane, placing the end of the steel box girder IV on the first pad pier and a second pad pier on the second support by using the crane, attaching the outer side surface of the steel box girder IV to a stacking plate on the second support, installing the steel box girder I and the steel box girder II on the first support, installing the steel box girder III and the steel box girder IV on the second support in an overhead manner, placing a bamboo plywood on an internal frame, laying bamboo plywood on the first support and the second support, using the bamboo plywood as an operation platform, and when the steel box girder I, the steel box girder II, the steel box girder III and the steel box girder IV need to be subjected to vertical displacement adjustment in the vertical direction, respectively placing telescopic cylinders between the end of the steel box girder and the end of the steel box girder I in place, The end of the steel box girder II and the end of the steel box girder installed in position, the end of the steel box girder III and the end of the steel box girder installed in position, and the end of the steel box girder IV and the end of the steel box girder installed in position, displacement adjustment is carried out on the steel box girder I, the steel box girder II, the steel box girder III and the steel box girder IV in the vertical direction through the extension thrust of a telescopic cylinder, when the displacement adjustment is required to be carried out on the steel box girder I, the steel box girder II, the steel box girder III and the steel box girder IV in the transverse direction, the telescopic cylinder is respectively placed between the steel box girder I and the steel box girder II and between the steel box girder IV and the steel box girder III, the displacement adjustment is carried out on the steel box girder I, the steel box girder II, the steel box girder III and the steel box girder IV in the transverse direction through the extension thrust of the telescopic cylinder, and the telescopic cylinder is placed on a distribution girder after the positioning of the steel box girder I, the steel box girder II, the steel box girder III and the steel box girder IV is completed, the telescopic cylinders are arranged between the steel box girder I and the distribution girder, between the steel box girder II and the distribution girder, between the steel box girder III and the distribution girder and between the steel box girder IV and the distribution girder, so that the telescopic cylinders are in an extension state, the steel box girder I, the steel box girder II, the steel box girder III and the steel box girder IV are jacked up, the first pad pier, the second pad pier and the stacking plate are taken out from the position between the steel box girder I and the distribution girder, the position between the steel box girder II and the distribution girder, the position between the steel box girder III and the distribution girder and the position between the steel box girder IV and the distribution girder, the telescopic cylinders are in a contraction state, the steel box girder I, the steel box girder II, the steel box girder III and the steel box girder IV fall down and then are arranged on a permanent support of the bridge, the telescopic cylinders are taken out from the position between the steel box girder I and the distribution girder, the position between the steel box girder II and the distribution girder, the position between the steel box girder III and the distribution girder and the position between the steel box girder IV and the distribution girder, the bamboo plate is taken out from a built-in frame, and then the first support and the second support are dismantled from the supporting foundation, operation is carried out on the steel box girder I, the steel box girder II, the steel box girder III and the steel box girder IV, and the middle girder is arranged between the steel box girder II and the steel box girder III.

The invention designs that the method comprises the following steps: for the installation of steel box girders with rectangular cross-section,

on the side surface of the permanent bridge support, a third support and a fourth support are respectively arranged on the side surface of the permanent bridge support, second pad piers are respectively arranged on the outer side surface of a distribution beam of the third support and the outer side surface of a distribution beam of the fourth support, a code plate positioned on the second pad pier is positioned on the outer side surface, first pad piers are respectively arranged on the inner side surface of the distribution beam of the third support and the inner side surface of the distribution beam of the fourth support, a steel box beam V end is placed on the first pad pier and the second pad pier positioned on the third support by using a crane, the outer side surface of the steel box beam V is attached to the code plate positioned on the third support, a steel box beam VI end is placed on the first pad pier positioned on the third support by using the crane, a steel box beam VII end is placed on the first pad pier positioned on the third support by using the crane, a steel box beam VIII end is placed on the first pad pier positioned on the fourth support by using the crane, placing an end IX of the steel box girder between the end V of the steel box girder and the installation position, and placing an end of the steel box girder and the installation position of the steel box girder in place, and placing an end X of the steel box girder between the end IX of the steel box girder and the installation position of the steel box girder, and placing an outer side surface of the steel box girder X on a stacking plate of a fourth bracket by using a crane, so that the steel box girder V, the steel box girder VI and the steel box girder VII are installed on a third bracket in an overhead manner, the steel box girder VIII, the steel box girder IX and the steel box girder X are installed on a second bracket in an overhead manner, a bamboo plywood is placed on an internal frame, bamboo plywood is laid on the third bracket and the fourth bracket and serves as an operation platform, and when the steel box girder V, the steel box girder VI, the steel box girder IX and the steel box girder X are required to be vertically displaced and adjusted in place, telescopic cylinders are respectively placed between the end V of the end of the steel box girder and the installation position, and the end of the steel box girder is in place, The method comprises the steps of adjusting the displacement of a steel box girder V, a steel box girder VI, a steel box girder IX and a steel box girder X in the vertical direction through the extension thrust of a telescopic cylinder between the end of the steel box girder IX and the end of the steel box girder installed in position and between the end of the steel box girder X and the end of the steel box girder installed in position, respectively placing the telescopic cylinder between the steel box girder V and the steel box girder VI and between the steel box girder X and the steel box girder IX when the displacement of the steel box girder V, the steel box girder VI, the steel box girder IX and the steel box girder X in the transverse direction is required, adjusting the displacement of the steel box girder V, the steel box girder VI, the steel box girder IX and the steel box girder X in the transverse direction through the extension thrust of the telescopic cylinder, placing the telescopic cylinder on a distribution beam, installing the telescopic cylinder between the steel box girder V, the steel box girder VI and the steel box girder IX and the steel box girder X, and distributing the cylinder between the steel box girder V, the steel box girder and the steel box girder V and the steel box girder, The expansion cylinder is in an extension state between a steel box girder IX and a distribution girder and between a steel box girder X and the distribution girder, the steel box girder V, the steel box girder VI, the steel box girder IX and the steel box girder X are jacked up, a first pad pier, a second pad pier and a stacking plate are taken out from between the steel box girder V and the distribution girder, between the steel box girder VI and the distribution girder, between the steel box girder IX and the distribution girder and between the steel box girder X and the distribution girder, the expansion cylinder is in a contraction state, the steel box girder V, the steel box girder VI, the steel box girder IX and the steel box girder X are installed on a permanent support of the bridge after falling down, the expansion cylinder is taken out from between the steel box girder VII and the distribution girder, between the steel box girder VI and the distribution girder, between the steel box girder IX and the distribution girder and between the steel box girder X and the distribution girder, a bamboo glue plate is taken out from an internal frame, the steel box girder V, the steel box girder and the steel box girder X are hoisted up and the box girder pass through a crane operation of the steel box girder VIII, the steel box girder VII and the steel box girder VIII are subjected to displacement adjustment in the vertical direction and the transverse direction, the first pad pier and the second pad pier are taken out from the position between the steel box girder VII and the distribution beam and the position between the steel box girder VIII and the distribution beam, the steel box girder VII and the steel box girder VIII are installed on a permanent bridge support after falling down, the first support and the second support are dismantled from a supporting foundation, and the steel box girder XI is installed between the steel box girder VII and the steel box girder VIII.

The invention designs that the method comprises the following steps: when the main cylinder body and the auxiliary cylinder body are placed between the steel box beams, the main cylinder body and the auxiliary cylinder body are rotated on the screw through the nuts, the pressing claw is installed on the middle plate, the auxiliary cylinder body is made to be in an extension state firstly, the supporting claw and the pressing claw are made to act on the steel box beams respectively, the main cylinder body is positioned between the steel box beams, then the main cylinder body is made to be in the extension state, the auxiliary cylinder body is made to extend in a linkage mode simultaneously, the main cylinder body generates displacement thrust to the steel box beams, and when the main cylinder body and the auxiliary cylinder body are placed between the steel box beams and the distribution beams, the U-shaped groove body of the pressing claw is installed on the distribution beams.

In the technical scheme, the support and the telescopic cylinder are basic components and are necessary technical characteristics of the invention, the first pad pier, the second pad pier, the stacking plate and the bamboo plywood are functional components and are characteristics for realizing other technical effects of the invention, and the design of the technical characteristics of the distribution beam, the first upright post, the second upright post, the third upright post, the built-in frame, the steel box beam I, the steel box beam II, the steel box beam III, the steel box beam IV, the steel box beam V, the steel box beam VI, the steel box beam VII, the steel box beam VIII, the steel box beam IX, the steel box beam X, the steel box beam XI, the main cylinder body, the auxiliary cylinder body, the supporting claw, the intermediate plate, the screw, the nut, the pressing claw, the first leakage hole body, the strip hole body, the tooth body and the second leakage hole body is in accordance with the patent law and the implementation details thereof.

In the technical scheme, the bracket, the pad pier group and the telescopic cylinder for adjusting the displacement position of the steel box girder suspended on the permanent bridge support are important technical characteristics, and have novelty, creativity and practicability in the technical field of steel box girder installation devices and methods for existing railway transportation lines, and terms in the technical scheme can be explained and understood by patent documents in the technical field.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Figure 1 is a schematic view of one of the first embodiments of the present invention of a steel box girder installation set-up for an existing railway transport line,

figure 2 is a schematic view of one of the first embodiments of the present invention of a method of installing steel box girders for an existing railway transport line,

FIG. 3 is a schematic structural diagram of a steel box girder I101, a steel box girder II 102, a steel box girder III 103 and a steel box girder IV 104,

figure 4 is a schematic view of a second embodiment of the invention for a method of installing steel box girders for an existing railway transport line,

FIG. 5 is a schematic structural diagram of a steel box girder V201, a steel box girder VI 202, a steel box girder VII 203, a steel box girder VIII 204, a steel box girder IX 205, a steel box girder X206 and a steel box girder XI 207,

figure 6 is a schematic view of the construction of the telescopic cylinder 5 of the second embodiment of the present invention for a steel box girder installation apparatus of an existing railway transport line,

the steel box girder comprises a support-1, a first pad pier-2, a second pad pier-3, a stacking plate-4, a telescopic cylinder-5, a bamboo plywood-6, a distribution beam-11, a first upright post-12, a second upright post-13, a third upright post-14, an internal frame-15, a steel box girder I-101, a steel box girder II-102, a steel box girder III-103, a steel box girder IV-104, a steel box girder V-201, a steel box girder VI-202, a steel box girder VII-203, a steel box girder VIII-204, a steel box girder IX-205, a steel box girder X-206, a steel box girder XI-207, a steel box girder III-3, a steel box girder II-3, a steel box girder, a steel and a steel box girder, a steel plate,

The device comprises a main cylinder body-51, an auxiliary cylinder body-52, a supporting claw-53, an intermediate plate-54, a screw rod-55, a nut-56, a pressing claw-57, a first through hole body-541, a long strip hole body-542, a tooth body-571 and a second through hole body-572.

Detailed Description

Terms such as "having," "including," and "comprising," as used with respect to the present invention, are to be understood as not specifying the presence or addition of one or more other elements or combinations thereof, in accordance with the examination guidelines.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other, and further, unless otherwise specified, the equipments and materials used in the following examples are commercially available, and if the processing conditions are not explicitly specified, please refer to the commercially available product specifications or follow the conventional method in the art.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is one of first embodiments of the present invention, and the embodiment is specifically described with reference to the accompanying drawings, and includes a support 1, a first pad pier 2, a second pad pier 3, a stacking plate 4, a telescopic cylinder 5, and a bamboo plywood 6, wherein the support 1 is provided with the first pad pier 2, the second pad pier 3, the telescopic cylinder 5, and the bamboo plywood 6, and the second pad pier 3 is provided with the stacking plate 4.

In the present embodiment, the support 1 is configured to include a distribution beam 11, a first column 12, a second column 13, a third column 14, and an inner frame 15, and one end of the distribution beam 11 is configured to be coupled to the upper end of the first column 12, the other end of the distribution beam 11 is configured to be coupled to the upper end of the third column 14, the middle portion of the distribution beam 11 is configured to be coupled to the upper end of the second column 13, one corner of the lower end of the inner frame 15 is configured to be coupled to the upper end of the inner side of the first column 12, the other corner of the lower end of the inner frame 15 is configured to be coupled to the upper end of the inner side of the third column 14, the upper corner of the inner frame 15 is configured to be coupled to the upper end of the second column 13, the lower end transverse portion of the inner frame 15 is configured to be coupled to the second column 13, the upper end surfaces of the distribution beam 11 are respectively configured to be coupled to the first pad pier 2, The second pad pier 3 and the telescopic cylinder 5 are in contact connection and the lower end transverse part of the built-in frame 15 is arranged to be in contact connection with the bamboo plywood 6, the distribution beam 11, the first upright post 12, the second upright post 13 and the third upright post 14 are respectively arranged to be rectangular tubular bodies and the built-in frame 15 is arranged to be a triangular frame-shaped body.

Through support 1, formed to first pad mound 2, second pad mound 3, the support tie point of telescoping cylinder 5 and bamboo offset plate 6, by distribution beam 11, realized being connected with first pad mound 2, realized being connected with second pad mound 3, realized being connected with telescoping cylinder 5, by built-in frame 15, realized being connected with bamboo offset plate 6, by first stand 12, second stand 13 and third stand 14, realized leaving the ground to support the processing to distribution beam 11 and built-in frame 15, its technical aim at: used as a support carrier for the first pad pier 2, the second pad pier 3, the telescopic cylinder 5 and the bamboo plywood 6.

In the present embodiment, the first pad pier 2 is provided as a rectangular tubular body having a port portion blocking plate and the lower end surface portion of the first pad pier 2 is provided in contact-type coupling with the bracket 1.

Through first pad mound 2, formed the support tie point to support 1, by first pad mound 2, realized being connected with support 1, its technical aim at: used as one of the components for temporarily supporting the steel box girder.

In the present embodiment, the second pad pier 3 is provided as a rectangular tubular body having an end opening part closure and the lower end surface part of the second pad pier 3 is provided to be coupled with the cradle 1 in contact, one of the side surface parts of the upper end surface of the second pad pier 3 is provided to be coupled with the knock out plate 4,

through second pad mound 3, formed the support tie point to support 1 and yard board 4, by second pad mound 3, realized being connected with support 1, realized being connected with yard board 4, its technical aim at: and the second component is used for temporarily supporting the steel box girder.

In the present embodiment, the pallet 4 is provided as a rectangular sheet-like body and the lower end surface portion of the pallet 4 is provided to be coupled with the second pad pier 3.

Through sign indicating number board 4, formed the support tie point to second pad mound 3, by sign indicating number board 4, realized being connected its technical aim at with second pad mound 3: used as a component for positioning the steel box girder.

In the present embodiment, the telescopic cylinder 5 is provided as a two-stage telescopic cylinder and the lower end surface portion of the telescopic cylinder 5 is provided in contact-type coupling with the bracket 1.

Through telescoping cylinder 5, formed the support tie point to support 1, by telescoping cylinder 5, realized being connected with support 1, its technical aim at: the temporary displacement thrust device is used as a component for performing temporary displacement thrust on the steel box girder.

In the present embodiment, the bamboo plywood 6 is provided as a rectangular plate-shaped body and the ends of the bamboo plywood 6 are provided to be coupled with the bracket 1.

Through bamboo plywood 6, formed the support tie point to support 1, by bamboo plywood 6, realized being connected with support 1, its technical aim at: for use as a platform member for the re-operation of steel box girders.

In this embodiment, the support 1 and the first pad mound 2, the second pad mound 3 and the telescoping cylinder 5 set up to distribute and support 1, the first pad mound 2, the second pad mound 3 and the telescoping cylinder 5 set up to distribute for the mode of side location with the sign indicating number board 4 according to the mode that adjustable mounted position supported, support 1, the first pad mound 2, the second pad mound 3 and the telescoping cylinder 5 set up to distribute for the mode according to putting the operation panel down with bamboo glued membrane 6, a distribution beam 11, two first stands 12, two second stands 13, two third stands 14 and one built-in frame 15 set up to constitute a set of three leg framves and a support 1 sets up to include two sets of three leg framves.

The invention is further described below with reference to the following examples, which are intended to illustrate the invention but not to limit it further.

A method of installing a steel box girder for an existing railway transportation line, fig. 2 is one of the first embodiments of the present invention, which comprises the steps of: for the installation of steel box beams with side extensions,

prefabricating a supporting foundation pit opening on a side surface part of a permanent bridge support, placing a first upright post 12, a second upright post 13 and a third upright post 14 of two groups of three leg frames into the supporting foundation pit opening, pouring cement mortar into the supporting foundation pit opening, installing a first support 1 on the side surface part of the permanent bridge support, then installing a second support 1 on the side surface part of the permanent bridge support, respectively placing second cushion piers 3 on an outer side surface of a distribution beam 11 of the first support 1 and an outer side surface of a distribution beam 11 of the second support 1, enabling a stacking plate 4 positioned on the second cushion pier 3 to be positioned on the outer side surface, respectively placing first cushion piers 2 on the inner side surface of the distribution beam 11 of the first support 1 and the inner side surface of the distribution beam 11 of the second support 1, and using a crane to place the ends of a steel box girder I101 on the first cushion pier 2 and the second cushion pier 3 positioned on the first support 1, attaching the outer side surface of a steel box girder I101 to a stacking plate 4 on a first support 1, placing the end of a steel box girder II 102 on a first pad pier 2 on the first support 1 by using a crane, placing the end of a steel box girder III 103 on the first pad pier 2 on a second support 1 by using the crane, placing the end of a steel box girder IV 104 on the first pad pier 2 and the second pad pier 3 on the second support 1 by using the crane, attaching the outer side surface of the steel box girder IV 104 to the stacking plate 4 on the second support 1, thereby mounting the steel box girder I101 and the steel box girder II 102 on the first support 1 in an overhead manner, mounting the steel box girder III 103 and the steel box girder IV 104 on the second support 1 in an overhead manner, placing a bamboo plywood 6 on an internal frame 15, laying a bamboo plywood 6 on the first support 1 and the second support 1, and using the bamboo plywood 6 as an operation platform when the steel box girder I101 is needed, When the steel box girder II 102, the steel box girder III 103 and the steel box girder IV 104 are subjected to displacement adjustment in the vertical direction, the telescopic cylinders 5 are respectively placed between the end of the steel box girder I101 and the end of the steel box girder installed in place, between the end of the steel box girder II 102 and the end of the steel box girder installed in place, between the end of the steel box girder III 103 and the end of the steel box girder installed in place, and between the end of the steel box girder IV 104 and the end of the steel box girder installed in place, the steel box girder I101, the steel box girder II 102, the steel box girder III 103 and the steel box girder IV 104 are subjected to displacement adjustment in the vertical direction through the extension thrust of the telescopic cylinders 5, when the steel box girder I101, the steel box girder II 102, the steel box girder III 103 and the steel box girder IV 104 are required to be subjected to displacement adjustment in the transverse direction, the telescopic cylinders 5 are respectively placed between the steel box girder I101 and the steel box girder 102, and between the steel box girder II 104 and the steel box girder IV 103 through the extension thrust of the telescopic cylinders 5, the method comprises the steps of carrying out displacement adjustment on a steel box girder I101, a steel box girder II 102, a steel box girder III 103 and a steel box girder IV 104 in the transverse direction, after the steel box girder I101, the steel box girder II 102, the steel box girder III 103 and the steel box girder IV 104 are positioned, placing a telescopic cylinder 5 on a distribution girder 11, installing the telescopic cylinder 5 between the steel box girder I101 and the distribution girder 11, between the steel box girder II 102 and the distribution girder 11, between the steel box girder III 103 and the distribution girder 11 and between the steel box girder IV 104 and the distribution girder 11 to enable the telescopic cylinder 5 to be in an extension state, jacking the steel box girder I101, the steel box girder II 102, the steel box girder III 103 and the steel box girder IV 104, lifting up the first pad pier 2, the second pad 3 and the pallet 4 from between the steel box girder I101 and the distribution girder 11, between the steel box girder II 102 and the distribution girder 11, between the steel box girder 103 and the distribution girder 11 and between the steel box girder IV 104, and enabling the telescopic cylinder 5 to be in a contraction state, after falling, the steel box girder I101, the steel box girder II 102, the steel box girder III 103 and the steel box girder IV 104 are installed on a permanent bridge support, the telescopic cylinders 5 are taken out from the space between the steel box girder I101 and the distribution beam 11, the space between the steel box girder II 102 and the distribution beam 11, the space between the steel box girder III 103 and the distribution beam 11 and the space between the steel box girder IV 104 and the distribution beam 11, the bamboo plywood 6 is taken out from the built-in frame 15, the first support 1 and the second support 1 are detached from a supporting foundation, operation is carried out on the steel box girder I101, the steel box girder II 102, the steel box girder III 103 and the steel box girder IV 104, and the middle girder 105 is installed between the steel box girder II 102 and the steel box girder III 103.

A method for installing steel box girders for an existing railway transportation line, fig. 4 is a second embodiment of the invention, which comprises the following steps: for the installation of steel box girders with rectangular cross-section,

on the side surface of the permanent bridge support, a third bracket 1 and a fourth bracket 1 are respectively arranged on the side surface of the permanent bridge support, second pad piers 3 are respectively arranged on the outer side surface of a distribution beam 11 of the third bracket 1 and the outer side surface of a distribution beam 11 of the fourth bracket 1, a code plate 4 positioned on the second pad pier 3 is positioned on the outer side surface, first pad piers 2 are respectively arranged on the inner side surface of the distribution beam 11 of the third bracket 1 and the inner side surface of the distribution beam 11 of the fourth bracket 1, a crane is used for placing the ends of a steel box beam V201 on the first pad pier 2 and the second pad pier 3 positioned on the third bracket 1, the outer side surface of the steel box beam V201 is attached to the code plate 4 positioned on the third bracket 1, the crane is used for placing the ends of a steel box beam VI 202 on the first pad pier 2 positioned on the third bracket 1, the crane is used for placing the ends of the steel box beam 203 on the first pad pier 2 positioned on the third bracket 1, placing the end of a steel box girder VIII 204 on a first pad pier 2 on a fourth support 1 by using a crane, placing the end of a steel box girder IX 205 on the first pad pier 2 on the fourth support 1 by using the crane, placing the end of the steel box girder X206 on the first pad pier 2 and a second pad pier 3 on the fourth support 1 by using the crane, attaching the outer side surface part of the steel box girder X206 to a stacking plate 4 on the fourth support 1, thereby aerial-mounting the steel box girder V201, the steel box girder VI 202 and the steel box girder VII 203 on the third support 1, aerial-mounting the steel box girder VIII 204, the steel box girder 205 and the steel box girder X206 on the second support 1, placing a bamboo plywood 6 on an internal frame 15, laying bamboo plywood 6 on the third support 1 and the fourth support 1, using the bamboo plywood 6 as an operation platform, and performing vertical shifting on the steel box girder V201, the steel box girder X202, the steel box girder VI 205 and the steel box girder VI 206 in the vertical direction, the telescopic cylinders 5 are respectively placed between the end of the steel box girder V201 and the end of the steel box girder installed in position, between the end of the steel box girder VI 202 and the end of the steel box girder installed in position, between the end of the steel box girder IX 205 and the end of the steel box girder installed in position, and between the end of the steel box girder X206 and the end of the steel box girder installed in position, when the steel box girder V201, the steel box girder VI 202, the steel box girder IX 205 and the steel box girder X206 need to be subjected to displacement adjustment in the vertical direction through the extension thrust of the telescopic cylinders 5, the telescopic cylinders 5 are respectively placed between the steel box girder V201 and the steel box girder VI 202, the steel box girder X206 and the steel box girder 205 to carry out displacement adjustment in the transverse direction, and the steel box girder V201, the steel box girder VI 202, the steel box girder IX 205 and the steel box girder X206 and the steel box girder 205 are subjected to displacement adjustment in the transverse direction through the extension thrust of the telescopic cylinders 5, after the positioning of the steel box girder V201, the steel box girder VI 202, the steel box girder IX 205 and the steel box girder X206 is completed, the telescopic cylinder 5 is placed on the distribution girder 11, the telescopic cylinder 5 is installed between the steel box girder V201 and the distribution girder 11, between the steel box girder VI 202 and the distribution girder 11, between the steel box girder IX 205 and the distribution girder 11 and between the steel box girder X206 and the distribution girder 11, so that the telescopic cylinder 5 is in an extension state, the steel box girder V201, the steel box girder VI 202, the steel box girder IX 205 and the steel box girder X206 are jacked up, the first pier 2, the second pier 3 and the X-shaped plate 4 are taken out from between the steel box girder V201 and the distribution girder 11, between the steel box girder VI 202 and the distribution girder 11, between the steel box girder IX 205 and the distribution girder 11 and between the steel box girder X206 and the distribution girder 11, then the telescopic cylinder 5 is in a contraction state, and the steel box girder 201, the steel box girder VI 205, the steel box girder 202 and the steel box girder X206 are permanently installed on the steel box girder X206, the telescopic cylinders 5 are taken out from the space between the steel box girder V201 and the distribution girder 11, the space between the steel box girder VI 202 and the distribution girder 11, the space between the steel box girder IX 205 and the distribution girder 11 and the space between the steel box girder X206 and the distribution girder 11, the bamboo plywood 6 is taken out from the built-in frame 15, the operation is carried out on the steel box girder V201, the steel box girder VI 202, the steel box girder IX 205 and the steel box girder X206, the steel box girder VII 203 and the steel box girder VIII 204 are hoisted, the vertical direction and the transverse direction displacement adjustment are carried out on the steel box girder VII 203 and the steel box girder VIII 204, the first pad pier 2 and the second pad pier 3 are taken out from the space between the steel box girder VII 203 and the distribution beam 11 and the space between the steel box girder VIII 204 and the distribution beam 11, the steel box girder VII 203 and the steel box girder VIII 204 are installed on a permanent bridge support after falling, the first support 1 and the second support 1 are detached from a support foundation, and the steel box girder XI 207 is installed between the steel box girder VII 203 and the steel box girder VIII 204.

A steel box girder installation device for an existing railway transportation line, FIG. 6 is a second embodiment of the present invention, which will be described in detail with reference to the accompanying drawings, wherein a telescopic cylinder 5 is provided to include a main cylinder 51, a sub-cylinder 52, a supporting jaw 53, an intermediate plate 54, a screw 55, a nut 56 and a pressing jaw 57, and a first leakage hole body 541 is provided at an upper end portion of the intermediate plate 54, respectively, a long hole body 542 is provided at an intermediate portion of the intermediate plate 54 and a tooth body 571 is provided at a lower end surface portion of a lateral portion of the pressing jaw 57, a second leakage hole body 572 is provided at a lateral portion of the pressing jaw 57 and one lateral portion of the intermediate plate 54 is provided to be coupled to an outer shell of the main cylinder 51, the other lateral portion of the intermediate plate 54 is provided to be coupled to an outer shell of the sub-cylinder 52 and a telescopic joint of the sub-cylinder 52 is provided to be coupled to the supporting jaw 53, a vertical portion of the pressing jaw 57 is provided to be coupled to the screw 55 and a vertical portion of the pressing jaw 57 is provided to be coupled to be in contact with an inner lateral portion of the intermediate plate 54, the screw 55 is provided in the elongated hole body 542 and the nut 56 is provided to be screw-coupled with the screw 55, an inner end surface portion of the nut 56 is provided to be contact-coupled with an outer side surface portion of the intermediate plate 54 and the two intermediate plates 54 are provided between the main cylinder body 51 and the sub cylinder body 52, one screw 55 is provided on the pressing claw 57 and the two nuts 56 are provided between the screw 55 and the intermediate plate 54, respectively, the main cylinder body 51 and the sub cylinder body 52 are provided as two-stage telescopic cylinders and the holding claw 53 is provided as a Y-shaped branched body, the intermediate plate 54 is provided as a rectangular plate body and the screw 55 is provided as a head screw, the nut 56 is provided as a hexagonal nut and the pressing claw 57 is provided as an L-shaped bracket body having a U-shaped groove body in a lateral portion, the first penetration leakage hole body 541 and the second penetration hole body 572 are provided as circular hole bodies and the elongated hole body 542 is provided as a rectangular hole body, and the tooth body 571 is provided as a serration.

The technical purpose is as follows: the temporary displacement thrust device is used as a part for performing temporary displacement thrust on the steel box girder after the steel box girder is firstly positioned.

A third embodiment of the present invention relates to a method for installing a steel box girder for an existing railway transportation line, which comprises the steps of: when the main cylinder 51 and the sub cylinder 52 are interposed between the steel box girders, the pressing claw 57 is mounted on the intermediate plate 54 by rotating the screw 55 via the nut 56, the sub cylinder 52 is extended, the supporting claw 53 and the pressing claw 57 are respectively acted on the steel box girders, the main cylinder 51 is positioned between the steel box girders, the main cylinder 51 is extended, the sub cylinder 52 is extended in an interlocking manner, the main cylinder 51 generates a displacement thrust to the steel box girders, and when the main cylinder 51 and the sub cylinder 52 are interposed between the steel box girders and the distribution girders 11, the U-shaped groove of the pressing claw 57 is mounted on the distribution girders 11.

In the second embodiment of the invention, the support 1, the set of buttresses and the telescopic cylinder 5 are connected with each other in a manner of adjusting the displacement position of the steel box girder suspended on the permanent bridge support.

In the present embodiment, the pad pier group is arranged to comprise a first pad pier 2 and a second pad pier 3.

In this embodiment, a first attachment device is also included and is provided on the pad pier set, the first attachment device being provided as a gangway 4.

In this embodiment, a second attachment device is also included and is disposed on the bracket 1, the second attachment device being configured as a bamboo veneer 6.

A second embodiment of the invention is based on the first embodiment,

the second embodiment of the present invention comprises the steps of: after the steel box girder is lifted, the bracket 1 and the pad pier group realize the clearance type support of the steel box girder on the permanent bridge support, and after the steel box girder is placed on the pad pier group, the telescopic cylinder 5 realizes the displacement position adjustment of the steel box girder suspended on the permanent bridge support.

In this embodiment, the steps are: the telescopic cylinder 5 and the pad pier group are used for installing the steel box girder on the permanent bridge support on the outer side surface of the support 1, and the steel box girder on the outer side surface of the support 1 is installed on the permanent bridge support through the hoisting device.

A second embodiment of the invention is based on the first embodiment.

The invention has the following characteristics:

1. due to the design of the support 1, the pad pier group and the telescopic cylinder 5, after the steel box girder is lifted, the steel box girder is supported on the permanent bridge support in a clearance type through the support 1 and the pad pier group, and after the steel box girder is placed on the pad pier group, the steel box girder suspended on the permanent bridge support is adjusted in displacement position through the telescopic cylinder 5, so that the installation effect of the steel box girder on the existing railway transportation line is improved.

2. Due to the design of the first pad pier 2 and the second pad pier 3, two beams are supported.

3. Due to the design of the stacking plate 4, the side face of the steel box girder is positioned.

4. Due to the design of the bamboo plywood 6, the arrangement of the operating platform is realized.

5. Because the structural shape is limited by the numerical range, the numerical range is the technical characteristic of the technical scheme of the invention, and is not the technical characteristic obtained by formula calculation or limited tests, and tests show that the technical characteristic of the numerical range achieves good technical effect.

6. Due to the design of the technical characteristics of the invention, tests show that each performance index of the invention is at least 1.7 times of the existing performance index under the action of the single and mutual combination of the technical characteristics, and the invention has good market value through evaluation.

Still other technical features associated with the bracket 1 for adjusting the displacement position of the steel box girder suspended on the permanent support of the bridge, the set of piers and the telescopic cylinder 5 are all one of the embodiments of the present invention, and the technical features of the above-described embodiments can be arbitrarily combined, and in order to meet the requirements of patent laws, patent practice rules and examination guidelines, all possible combinations of the technical features of the above-described embodiments will not be described.

The above embodiments are only one implementation of the steel box girder installation device and method for existing railway transportation lines provided by the present invention, and other variations of the solution provided by the present invention, increasing or decreasing the components or steps therein, or applying the present invention to other technical fields close to the present invention, are within the scope of the present invention.

Claims (10)

1. The utility model provides a steel box girder installation device for existing railway transportation line, characterized by: the device comprises a bracket (1) which is arranged on the side surface of a permanent bridge support and used as a temporary support, a pad pier group which is arranged on the bracket (1) and used for heightening the steel box girder, and a telescopic cylinder (5) which is used for generating displacement thrust to the steel box girder.

2. The steel box girder installation device for an existing railway transportation line according to claim 1, wherein: the support (1), the pad pier group and the telescopic cylinder (5) are connected with each other in a mode of adjusting the displacement position of the steel box girder suspended on the permanent bridge support.

3. The steel box girder installation device for an existing railway transportation line according to claim 1, wherein: the pad pier group is arranged to comprise a first pad pier (2) and a second pad pier (3),

or, the utility model also comprises a first accessory device which is arranged on the pad pier group and is arranged as a code plate (4),

or the bamboo plywood comprises a second accessory device which is arranged on the bracket (1) and is a bamboo plywood (6).

4. The steel box girder installation device for an existing railway transportation line according to claim 3, wherein: the bracket (1) is respectively provided with a first pad pier (2), a second pad pier (3), a telescopic cylinder (5) and a bamboo plywood (6), and the second pad pier (3) is provided with a stacking plate (4).

5. The steel box girder installation device for an existing railway transportation line of claim 4, wherein: the support (1) is provided with a distribution beam (11), a first upright post (12), a second upright post (13), a third upright post (14) and a built-in frame (15), one end of the distribution beam (11) is connected with the upper end of the first upright post (12), the other end of the distribution beam (11) is connected with the upper end of the third upright post (14) and the middle part of the distribution beam (11) is connected with the upper end of the second upright post (13), one corner part of the lower end of the built-in frame (15) is connected with the upper end part of the inner side surface of the first upright post (12) and the other corner part of the lower end of the built-in frame (15) is connected with the upper end part of the inner side surface of the third upright post (14), the upper corner part of the built-in frame (15) is connected with the upper end part of the upper end of the second upright post (13) and the lower end transverse part of the built-in frame (15) is connected with the second upright post (13), the upper end surface of the distribution beam (11) is respectively connected with the first pad pier (2), the second pad pier (3) and the telescopic cylinder (5) in a contact way, the lower end transverse part of the built-in frame (15) is connected with the bamboo plywood (6) in a contact way, the distribution beam (11), the first upright post (12), the second upright post (13) and the third upright post (14) are respectively arranged into rectangular tubular bodies, and the built-in frame (15) is arranged into a triangular frame-shaped body,

or the telescopic cylinder (5) is arranged into a two-section telescopic cylinder, the end surface part of the lower end of the telescopic cylinder (5) is arranged to be in contact connection with the bracket (1),

or the first pad pier (2) is arranged into a rectangular tubular body with a port part blocking plate, the lower end surface part of the first pad pier (2) is arranged to be in contact connection with the bracket (1),

or the second pad pier (3) is a rectangular tubular body with a port part blocking plate, the lower end surface part of the second pad pier (3) is connected with the bracket (1) in a contact way, one side surface part of the upper end surface of the second pad pier (3) is connected with the code plate (4),

or the code plate (4) is arranged into a rectangular sheet body and the lower end surface part of the code plate (4) is arranged to be connected with the second pad pier (3),

or the bamboo plywood (6) is arranged into a rectangular platy body, and the end head of the bamboo plywood (6) is connected with the bracket (1).

6. The steel box girder installation device and method for an existing railway transportation line according to any one of claims 1 to 5, wherein: support (1) and first pad mound (2), second pad mound (3) and telescoping cylinder (5) set up to distribute and support (1) according to the mode that adjustable mounted position supported, first pad mound (2), second pad mound (3) and telescoping cylinder (5) set up to the mode distribution of side location with sign indicating number board (4), support (1), first pad mound (2), second pad mound (3) and telescoping cylinder (5) set up to distribute according to the mode of putting the operation panel down with bamboo offset plate (6), a distribution beam (11), two first stands (12), two second stands (13), two third stands (14) and built-in frame (15) set up to constitute a set of three landing leg framves and support (1) set up to include two sets of three landing leg framves.

7. The steel box girder installation device for an existing railway transportation line of claim 6, wherein: the telescopic cylinder (5) is arranged to comprise a main cylinder body (51), an auxiliary cylinder body (52), a supporting claw (53), an intermediate plate (54), a screw rod (55), a nut (56) and a pressing claw (57), wherein the upper end part of the intermediate plate (54) is respectively provided with a first leakage hole body (541), the middle part of the intermediate plate (54) is provided with a long hole body (542), the end surface part of the lower end of the transverse part of the pressing claw (57) is provided with a tooth body (571), the transverse part of the pressing claw (57) is provided with a second leakage hole body (572), one side part of the intermediate plate (54) is connected with an outer section shell of the main cylinder body (51), the other side part of the intermediate plate (54) is connected with an outer section shell of the auxiliary cylinder body (52), the telescopic section of the auxiliary cylinder body (52) is connected with the supporting claw (53), the vertical part of the pressing claw (57) is connected with the screw rod (55), and the inner side part of the pressing claw (57) is connected with the intermediate plate (54) in a contact mode A screw (55) is provided in the elongated hole body (542) and a nut (56) is provided in threaded coupling with the screw (55), an inner end face portion of the nut (56) is provided in contact coupling with an outer side face portion of the intermediate plate (54) and two intermediate plates (54) are provided between the main cylinder body (51) and the sub cylinder body (52), one screw (55) is provided on the pressing claw (57) and two nuts (56) are provided between the screw (55) and the intermediate plates (54), respectively, the main cylinder body (51) and the sub cylinder body (52) are provided as two-joint type telescopic cylinders and the holding claw (53) is provided as a Y-shaped branched body, the intermediate plate (54) is provided as a rectangular sheet body and the screw (55) is provided as a screw head, the nut (56) is provided as a hexagonal nut and the pressing claw (57) is provided as an L-shaped body frame body having a U-shaped groove body in a transverse portion, the first through-leakage hole body (541) and the second through-hole body (572) are provided as a circular hole body, respectively, and the elongated hole body 542) The tooth bodies (571) are arranged into rectangular hole bodies and sawtooth teeth.

8. A method for installing a steel box girder for an existing railway transportation line is characterized by comprising the following steps: the method comprises the following steps: after the steel box girder is lifted, the bracket (1) and the pad pier group realize clearance type support of the steel box girder on the permanent bridge support, and after the steel box girder is placed on the pad pier group, the telescopic cylinder (5) realizes displacement position adjustment of the steel box girder suspended on the permanent bridge support.

9. The method of installing a steel box girder for an existing railway transportation line according to claim 8, wherein: the method comprises the following steps: the operation of installing the steel box girder on the permanent bridge support on the outer side face of the support (1) is realized by the telescopic cylinder (5) and the pad pier group, and the operation of installing the steel box girder on the permanent bridge support on the inner side face of the support (1) is realized by the hoisting device on the steel box girder on the outer side face of the support (1).

10. The method of installing a steel box girder for an existing railway transportation line according to claim 9, wherein: the method comprises the following steps: for the installation of steel box beams with side extensions,

prefabricating a supporting foundation pit opening on the side surface of a permanent bridge support, placing a first upright (12), a second upright (13) and a third upright (14) of two groups of three-leg supports into the supporting foundation pit opening, pouring cement mortar into the supporting foundation pit opening, installing a first support (1) on the side surface of the permanent bridge support, installing a second support (1) on the side surface of the permanent bridge support, respectively placing second pad piers (3) on the outer side surface of a distribution beam (11) of the first support (1) and the outer side surface of the distribution beam (11) of the second support (1), enabling a code plate (4) on the second pad pier (3) to be positioned on the outer side surface, respectively placing first pad piers (2) on the inner side surface of the distribution beam (11) of the first support (1) and the inner side surface of the distribution beam (11) of the second support (1), the end of the steel box girder I (101) is placed on a first pad pier (2) and a second pad pier (3) which are positioned on a first support (1) by using a crane, the outer side surface of the steel box girder I (101) is attached to a stacking plate (4) which is positioned on the first support (1), the end of the steel box girder II (102) is placed on the first pad pier (2) which is positioned on the first support (1) by using the crane, the end of the steel box girder III (103) is placed on the first pad pier (2) which is positioned on a second support (1) by using the crane, the end of the steel box girder IV (104) is placed on the first pad pier (2) and the second pad pier (3) which are positioned on the second support (1) by using the crane, the outer side surface of the steel box girder IV (104) is attached to the stacking plate (4) which is positioned on the second support (1), and the steel box girder I (101) and the steel box girder II (102) are installed on the first support (1), a steel box girder III (103) and a steel box girder IV (104) are arranged on a second support (1) in an overhead mode, a bamboo plywood (6) is placed on a built-in frame (15), the bamboo plywood (6) is laid on the first support (1) and the second support (1) and serves as an operating platform, when the steel box girder I (101), the steel box girder II (102), the steel box girder III (103) and the steel box girder IV (104) need to be subjected to vertical displacement adjustment, a telescopic cylinder (5) is respectively placed between the end of the steel box girder I (101) and the end of the steel box girder arranged in position, between the end of the steel box girder II (102) and the end of the steel box girder arranged in position, between the end of the steel box girder III (103) and the end of the steel box girder arranged in position, between the end of the steel box girder IV (104) and the end of the steel box girder arranged in position, and the end of the steel box girder arranged in position are pushed in a stretching mode through the stretching of the telescopic cylinder (5), the steel box girder comprises a steel box girder I (101), a steel box girder II (102), a steel box girder III (103) and a steel box girder IV (104) which are subjected to displacement adjustment in the vertical direction, when the steel box girder I (101), the steel box girder II (102), the steel box girder III (103) and the steel box girder IV (104) need to be subjected to displacement adjustment in the transverse direction, telescopic cylinders (5) are respectively placed between the steel box girder I (101) and the steel box girder II (102) and between the steel box girder IV (104) and the steel box girder III (103), through extension thrust of the telescopic cylinders (5), the steel box girder I (101), the steel box girder II (102), the steel box girder III (103) and the steel box girder IV (104) are subjected to displacement adjustment in the transverse direction, after the steel box girder I (101), the steel box girder II (102), the steel box girder IV (103) and the steel box girder IV (104) are positioned, the telescopic cylinders (5) are placed on a distribution beam I (11), and the steel box girder I (11) and the steel box girder (11) is installed between the distribution cylinders (11), Between a steel box girder II (102) and a distribution girder (11), between a steel box girder III (103) and the distribution girder (11) and between a steel box girder IV (104) and the distribution girder (11), the telescopic cylinder (5) is in an extension state, the steel box girder I (101), the steel box girder II (102), the steel box girder III (103) and the steel box girder IV (104) are jacked up, the first pad pier (2), the second pad pier (3) and the stacking plate (4) are taken out from between the steel box girder I (101) and the distribution girder (11), between the steel box girder II (102) and the distribution girder (11), between the steel box girder III (103) and the distribution girder (11) and between the steel box girder IV (104) and the distribution girder (11), the cylinder (5) is in a contraction state, the steel box girder I (101), the steel box girder II (102), the steel box girder 103) and the steel box girder IV (104) are permanently installed on a support after the steel box girder IV (104) falls, the telescopic cylinder (5) is taken out from the position between a steel box girder I (101) and a distribution girder (11), the position between a steel box girder II (102) and the distribution girder (11), the position between a steel box girder III (103) and the distribution girder (11) and the position between a steel box girder IV (104) and the distribution girder (11), the bamboo plywood (6) is taken out from a built-in frame (15), then a first bracket (1) and a second bracket (1) are detached from a supporting foundation, the operation is carried out on the steel box girder I (101), the steel box girder II (102), the steel box girder III (103) and the steel box girder IV (104), a middle girder 105 is arranged between the steel box girder II (102) and the steel box girder III (103),

or, the steps are: for the installation of steel box girders with rectangular cross-section,

on the side surface of the permanent bridge support, a third support (1) and a fourth support (1) are respectively arranged on the side surface of the permanent bridge support, second pad piers (3) are respectively arranged on the outer side surface of a distribution beam (11) of the third support (1) and the outer side surface of the distribution beam (11) of the fourth support (1), a yard plate (4) positioned on the second pad pier (3) is positioned on the outer side surface, first pad piers (2) are respectively arranged on the inner side surface of the distribution beam (11) of the third support (1) and the inner side surface of the distribution beam (11) of the fourth support (1), a crane is used for placing the end head of a steel box beam V (201) on the first pad pier (2) and the second pad pier (3) positioned on the third support (1), so that the outer side surface part of the steel box beam V (201) is attached to the yard plate (4) positioned on the third support (1), placing the end of a steel box girder VI (202) on a first pad pier (2) on a third bracket (1) by using a crane, placing the end of the steel box girder VII (203) on the first pad pier (2) on the third bracket (1) by using the crane, placing the end of the steel box girder VIII (204) on the first pad pier (2) on the fourth bracket (1) by using the crane, placing the end of the steel box girder IX (205) on the first pad pier (2) on the fourth bracket (1) by using the crane, placing the end of the steel box girder X (206) on the first pad pier (2) and the second pad pier (3) on the fourth bracket (1) by using the crane, attaching the outer side surface of the steel box girder X (206) to a stacking plate (4) on the fourth bracket (1), thereby installing the steel box girder V (201), the steel box girder VI (202) and the steel box girder VI (203) on the third bracket (1), mounting a steel box girder VIII (204), a steel box girder IX (205) and a steel box girder X (206) on a second support (1) in an overhead manner, placing a bamboo plywood (6) on a built-in frame (15), laying the bamboo plywood (6) on a third support (1) and a fourth support (1), using the bamboo plywood (6) as an operation platform, when the steel box girder V (201), the steel box girder VI (202), the steel box girder IX (205) and the steel box girder X (206) need to be subjected to displacement adjustment in the vertical direction, respectively placing telescopic cylinders (5) between the end head of the steel box girder V (201) and the end head of the steel box girder to be mounted in position, between the end head of the steel box girder VI (202) and the end head of the steel box girder to be mounted in position, between the end head of the steel box girder IX (205) and the end head of the steel box girder to be mounted in position, and extending through the telescopic cylinders (5) to be in position, the displacement adjustment is carried out on a steel box girder V (201), a steel box girder VI (202), a steel box girder IX (205) and a steel box girder X (206) in the vertical direction, when the displacement adjustment is required to be carried out on the steel box girder V (201), the steel box girder VI (202), the steel box girder IX (205) and the steel box girder X (206) in the transverse direction, a telescopic cylinder (5) is respectively placed between the steel box girder V (201) and the steel box girder VI (202) and between the steel box girder X (206) and the steel box girder IX (205), the displacement adjustment is carried out on the steel box girder V (201), the steel box girder VI (202), the steel box girder IX (205) and the steel box girder X (206) in the transverse direction through the extension thrust of the telescopic cylinder (5), the displacement adjustment is carried out on the steel box girder V (201), the steel box girder VI (202), the steel box girder IX (205) and the steel box girder X (206) in the transverse direction, the steel box girder V (11) is arranged between the telescopic cylinder (201), and the telescopic cylinder (11) after the displacement adjustment is carried out, the steel box girder V (201), the displacement adjustment is carried out, Between a steel box girder VI (202) and a distribution girder (11), between a steel box girder IX (205) and the distribution girder (11) and between the steel box girder X (206) and the distribution girder (11), the telescopic cylinder (5) is in an extension state, the steel box girder V (201), the steel box girder VI (202), the steel box girder IX (205) and the steel box girder X (206) are jacked up, a first pad pier (2), a second pad pier (3) and a stacking plate (4) are taken out from between the steel box girder V (201) and the distribution girder (11), between the steel box girder VI (202) and the distribution girder (11), between the steel box girder IX (205) and the distribution girder (11) and between the steel box girder X (206) and the distribution girder (11), the telescopic cylinder (5) is in a contraction state, the steel box girder V (201), the steel box girder IX (202), the steel box girder IX (205) and the steel box girder X (206) are permanently installed on a bridge support, the expansion cylinder (5) is taken out from between a steel box girder V (201) and a distribution girder (11), between a steel box girder VI (202) and the distribution girder (11), between a steel box girder IX (205) and the distribution girder (11) and between a steel box girder X (206) and the distribution girder (11), the bamboo plywood (6) is taken out from a built-in frame (15), operation is carried out on the steel box girder V (201), the steel box girder VI (202), the steel box girder (205) and the steel box girder X (206), the first pad pier (2) and the second pad pier (3) are lifted up from between the steel box girder (203) and the distribution girder (11), and are subjected to displacement adjustment in the vertical direction and the transverse direction between the steel box girder VII (203) and the steel box girder VII (204), the first pad pier (2) and the second pad pier (3) are permanently installed between the steel box girder VII (203) and the distribution girder (11) and between the steel box girder IX (204) and the steel box girder IX (11), and the distribution girder X (206), and the steel box girder (204) are permanently dropped down from the distribution girder (11), then the first bracket (1) and the second bracket (1) are dismantled from the supporting foundation, the steel box girder XI (207) is arranged between the steel box girder VII (203) and the steel box girder VIII (204),

or, the steps are: when the main cylinder body (51) and the auxiliary cylinder body (52) are placed between the steel box girders, the pressing claw (57) is mounted on the intermediate plate (54) by rotating the nut (56) on the screw (55), the auxiliary cylinder body (52) is in an extended state, the supporting claw (53) and the pressing claw (57) are respectively acted on the steel box girders, the main cylinder body (51) is positioned between the steel box girders, the main cylinder body (51) is in an extended state, the auxiliary cylinder body (52) is extended in a linkage manner, the main cylinder body (51) generates displacement thrust on the steel box girders, and when the main cylinder body (51) and the auxiliary cylinder body (52) are placed between the steel box girders and the distribution girders (11), the U-shaped groove body of the pressing claw (57) is mounted on the distribution girders (11).

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