Carrying frame shared by single line and double lines

Abstract

The invention relates to a single-line and double-line shared carrying frame which comprises an upper cross beam, a lower cross beam, a single-line and double-line shared carrying frame, a single-line and double-line shared carrying frame and a single-line and double-line shared carrying frame, and is characterized in that a swing bolster is rotationally mounted on the upper cross beam and is provided with a bridge girder erection machine mounting position; the supporting assembly is mounted on the single-wire mounting interface or the double-wire mounting interface; the single-line lower cross beam and the double-line lower cross beam are both provided with beam transporting vehicle installation positions, and one of the single-line lower cross beam and the double-line lower cross beam is selectively installed on the supporting assembly. According to the method, the whole carrying frame does not need to be replaced in the construction process, conversion of the single-line carrying frame and the double-line carrying frame can be completed by replacing the lower cross beam, the construction efficiency can be greatly improved, and the technical problems that time and labor are wasted, the construction efficiency is seriously affected and the construction progress is stopped due to overall replacement of the carrying frame in the related technology are solved.

Description

Technical Field

[0001] The present application relates to the technical field of high-speed railway beam erection equipment, and in particular to a single-track and double-track common carriage. Background Art

[0002] With the rapid development of my country's high-speed railways, bridge erection machines have been widely used in railway bridge construction due to their high construction efficiency and safety and reliability. When transferring between bridges or through tunnels, bridge erection machines often need to be carried to the yard by a matching beam transporter. Due to the large height difference between the bridge erection machine and the beam transporter and the different equipment structures, the bridge erection machine cannot be directly transferred on the beam transporter. It needs to be fixed to the beam transporter through a set of carrying frames.

[0003] As the scale of high-speed rail construction continues to increase, the terrain, geology, and environmental conditions are becoming more and more complex. It is often the case that both double-track prefabricated box girders and single-track prefabricated box girders need to be erected on a high-speed rail line, that is, there is a situation where single and double lines are alternating. During the entire erection process, it is necessary to use both a carrier suitable for erecting single-track prefabricated box girders and a carrier suitable for erecting double-track prefabricated box girders. In the relevant technology, the current solution is to use two sets of carriers, that is, a separate single-track carrier and a separate double-track carrier. During the construction process, the entire carrier needs to be replaced to adapt to the single and double-track erection. However, the entire process of replacing the carrier as a whole is time-consuming and labor-intensive, which seriously affects the construction efficiency and causes the construction progress to stagnate.

[0004] Therefore, it is necessary to design a new single and double track common carriage to overcome the problems mentioned above. Summary of the invention

[0005] The present application provides a single-line and double-line common carriage, which can solve the technical problem in the related art that the overall replacement of the carriage is time-consuming and labor-intensive, seriously affecting the construction efficiency and causing the construction progress to stagnate.

[0006] In the first aspect, an embodiment of the present application provides a single-line and double-line shared backpack, which includes: an upper crossbeam, on which a bolster is rotatably mounted, the bolster is provided with a bridge-building machine mounting position, and the upper crossbeam is provided with a single-line mounting interface and a double-line mounting interface; a support assembly, the support assembly is installed on the single-line mounting interface or the double-line mounting interface; a single-line lower crossbeam and a double-line lower crossbeam, both of which are provided with a beam transport vehicle mounting position, and the single-line lower crossbeam and the double-line lower crossbeam are selectively installed on the support assembly.

[0007] In combination with the first aspect, in one embodiment, the upper cross beam is provided with a rotating shaft, and the bolster is passed through the rotating shaft so that the bolster can rotate around the rotating shaft; the upper cross beam is also provided with an angle limiting device, and the angle limiting device is arranged on opposite sides of the bolster to limit the rotation angle of the bolster.

[0008] In combination with the first aspect, in one embodiment, the bolster is further equipped with an electrical limit device, which is configured to limit the rotation angle of the bolster, and when the bolster rotates to an extreme position, the electrical limit device issues an alarm.

[0009] In combination with the first aspect, in one embodiment, the bottom surface of the upper cross beam protrudes downward to form a boss, and the boss is provided with the single-line installation interface; the double-line installation interface includes a through hole opened in the upper cross beam and a pin hole connected to the through hole, and the axis of the pin hole is perpendicular to the axis of the through hole; the upper cross beam is also provided with a whole vehicle hoisting hole, and the whole vehicle hoisting hole is located between the boss and the through hole.

[0010] In combination with the first aspect, in one embodiment, the support assembly includes a long column, a middle column and a short column, and the lengths of the long column, the middle column and the short column decrease successively; at least one of the long column, the middle column and the short column is installed between the upper beam and the single-line lower beam, or between the upper beam and the double-line lower beam.

[0011] In combination with the first aspect, in one embodiment, the support assembly further includes: an upper column, the upper column having a plurality of sockets arranged in a vertical direction, the upper column being used to be installed on the dual-wire mounting interface; a lifting mechanism, the lifting mechanism being used to connect the upper beam and the upper column, and the lifting mechanism being connectable to the sockets of different heights.

[0012] In combination with the first aspect, in one embodiment, the lifting mechanism includes: a conversion sleeve, which is mounted on the upper column and plugged into the socket through a first pin, and the conversion sleeve is provided with a connecting hole; a lifting cylinder, one end of the lifting cylinder is used to be fixed to the upper beam, and the other end is plugged into the connecting hole through a second pin.

[0013] In combination with the first aspect, in one embodiment, the single- and double-line common backpack also includes an outer sleeve extension section, which is used to be fixed to the bottom surface of the upper crossbeam and is located directly below the double-line mounting interface. The upper column is also provided with a slideway; when the upper column is installed on the double-line mounting interface, the upper column is inserted into the outer sleeve extension section, and the upper crossbeam is slid on the slideway.

[0014] In combination with the first aspect, in one embodiment, the single- and double-track common backpack further includes: a diagonal brace assembly, the diagonal brace assembly includes a first diagonal brace, a second diagonal brace and a length-adjustable diagonal brace, the first diagonal brace is connected to the length-adjustable diagonal brace through the second diagonal brace; a first base, the first base is hinged to the first diagonal brace, and the first base is fixed to the upper crossbeam; a second base, the second base is hinged to the length-adjustable diagonal brace, and the second base is used to be installed on a beam transport vehicle.

[0015] In combination with the first aspect, in one embodiment, the single- and double-track shared carriage also includes an on-the-spot U-turn device, and the on-the-spot U-turn device includes: an on-the-spot U-turn turntable, the on-the-spot U-turn turntable includes a lower fixed disk and an upper rotating disk, the lower fixed disk and the upper rotating disk are coaxially connected for rotation, and the lower fixed disk is provided with a driving mechanism for driving the upper rotating disk to rotate; a bridge-building machine fixed seat, the bridge-building machine fixed seat includes two groups of parallel and spaced-apart pad beams fixed on the top of the upper rotating disk, and the two groups of pad beams are provided with a first locking hole and a second locking hole for connecting bridge-building machine arms of different widths.

[0016] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0017] By installing a bolster on the upper crossbeam, the bridge-building machine can be installed at the bridge-building machine installation position of the bolster, and when a single-line frame is needed, the support assembly is installed between the single-line installation interface of the upper crossbeam and the single-line lower crossbeam; when it is necessary to switch to a double-line frame, the single-line lower crossbeam is replaced with a double-line lower crossbeam, and the support assembly is installed between the double-line installation interface of the upper crossbeam and the double-line lower crossbeam. There is no need to replace the entire frame during construction, and the conversion between the single and double-line frames can be completed by replacing the lower crossbeam, which can greatly improve construction efficiency and solve the technical problem in related technologies that overall replacement of the frame is time-consuming and labor-intensive, seriously affecting construction efficiency and causing stagnation in construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A front view of a single- and double-track common carriage provided in an embodiment of the present application in a single-track high position state;

[0020] Figure 2 A side view of a single- and double-track common carriage provided in an embodiment of the present application in a single-track high position state;

[0021] Figure 3 A front view of a single- and double-track common carriage provided in an embodiment of the present application in a single-track neutral position;

[0022] Figure 4 A side view of a single- and double-track common carriage provided in an embodiment of the present application in a single-track neutral position;

[0023] Figure 5 A front view of a single- and double-track common carriage provided in an embodiment of the present application in a single-track low position;

[0024] Figure 6 A three-dimensional structural diagram of a single-line and double-line common carriage provided in an embodiment of the present application in a single-line state;

[0025] Figure 7 A schematic diagram of the three-dimensional structure of a bolster provided in an embodiment of the present application;

[0026] Figure 8 A schematic diagram of the structure of the bolster provided in an embodiment of the present application from a bottom-up perspective;

[0027] Fig. 9 A schematic diagram of the three-dimensional structure of the upper crossbeam provided in an embodiment of the present application;

[0028] Fig.10 A schematic diagram of the top structure of the upper crossbeam provided in an embodiment of the present application;

[0029] Fig.11 A schematic diagram of the structure of the upper crossbeam provided in an embodiment of the present application from a bottom view;

[0030] Fig.12 A schematic diagram of the three-dimensional structure of a single-line lower crossbeam provided in an embodiment of the present application;

[0031] Fig.13 A front view of a single- and double-track common carriage provided in an embodiment of the present application in a double-track super-high position;

[0032] Fig.14 A side view of a single-track and double-track common carriage provided in an embodiment of the present application in a double-track super-high position state;

[0033] Fig.15 A front view of a single- and double-track common backpack provided in an embodiment of the present application in a double-track middle position;

[0034] Fig.16 A side view of a single- and double-track common backpack provided in an embodiment of the present application in a double-track middle position;

[0035] Fig.17 A schematic diagram of the three-dimensional structure of a double-line lower crossbeam provided in an embodiment of the present application;

[0036] Fig.18A three-dimensional structural diagram of a single- and double-line common backpack provided in an embodiment of the present application in a double-line state;

[0037] Fig.19 This is a schematic diagram of the structure of the rotating disk and the bridge erection machine fixing seat in the embodiment of the present application;

[0038] Fig. 20 This is a schematic structural diagram of a lower fixed plate according to an embodiment of the present application;

[0039] Fig.21 This is a structural schematic diagram of an on-site U-turn turntable installed on a single-line carrier in an embodiment of the present application;

[0040] Fig. 22 This is a structural schematic diagram of the bridge erection machine arm installed on the original turning turntable in the embodiment of the present application;

[0041] Fig.23 It is a schematic structural diagram of an on-site U-turn turntable installed on a double-track carrier in an embodiment of the present application.

[0042] In the figure:

[0043] 1. Upper crossbeam; 11. Single-line installation interface; 12. Double-line installation interface; 121. Through hole; 13. Rotating shaft; 14. Angle limiting device; 15. Boss; 16. Vehicle hoisting hole; 17. First oil cylinder mounting seat; 18. Crossbeam latch;

[0044] 2. Bolster; 21. Bridge erection machine installation position; 22. Locking pin; 23. Slide plate;

[0045] 3. Support assembly; 31. Long column; 32. Middle column; 33. Short column; 34. Upper column; 341. Socket; 35. Lifting mechanism; 351. Conversion sleeve; 352. First latch; 353. Lifting cylinder; 354. Second latch;

[0046] 4. Single line lower crossbeam; 5. Double line lower crossbeam; 6. Jacket extension section;

[0047] 7. diagonal brace assembly; 71. first diagonal brace; 72. second diagonal brace; 73. length-adjustable diagonal brace;

[0048] 8. First base; 9. Second base;

[0049] 10. Lower fixed plate; 101. Lower mounting seat; 102. Rotating shaft assembly; 103. Second oil cylinder mounting seat;

[0050] 20, upper rotating plate; 201, upper flange; 202, lower flange; 203, spacer; 204, plug-in hole; 205, shaft mounting hole;

[0051] 30. Bridge erecting machine fixing seat; 301. Pad beam; 302. First locking hole; 303. Second locking hole; 304. Rubber pad;

[0052] 40. driving mechanism; 401. hydraulic cylinder; 402. connector;

[0053] 50. Bridge erecting machine arm; 60. Beam transport vehicle body; 70. Plate rubber bearing; 80. Anchor assembly. DETAILED DESCRIPTION

[0054] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0055] The embodiment of the present application provides a single-line and double-line common carriage, which can solve the technical problem in the related art that the overall replacement of the carriage is time-consuming and labor-intensive, seriously affecting the construction efficiency and causing the construction progress to stagnate.

[0056] See also Figure 1 and Figure 2 As shown, a single-track and double-track common carriage provided in an embodiment of the present application may include: an upper crossbeam 1, a bolster 2 is rotatably mounted on the upper crossbeam 1, and the bolster 2 is provided with a bridge erection machine installation position 21 ( Figure 7 As shown), the upper crossbeam 1 is provided with a single-line installation interface 11 and a double-line installation interface 12; a support component 3, the support component 3 is installed on the single-line installation interface 11 or the double-line installation interface 12; a single-line lower crossbeam 4 and a double-line lower crossbeam 5, the single-line lower crossbeam 4 and the double-line lower crossbeam 5 are both provided with a beam transport vehicle installation position, the single-line lower crossbeam 4 and the double-line lower crossbeam 5 are selectively installed on the support component 3.

[0057] In this embodiment, the upper crossbeam 1 is the main load-bearing component of the backpack, and the bolster 2 is rotatably installed on the top surface of the upper crossbeam 1, so that the bolster 2 can rotate relative to the upper crossbeam 1. Preferably, a plate rubber bearing 70 is arranged at the bridge-building machine installation position 21 of the bolster 2, so that the plate rubber bearing 70 is padded between the bridge-building machine arm 50 and the bolster 2; at the same time, four locking holes are preferably arranged on the bolster 2, and the bridge-building machine arm 50 and the bolster 2 are connected by locking pins 22 inserted in the locking holes; when the bridge-building machine arm 50 is fixed to the bridge-building machine installation position 21 of the bolster 2, the bridge-building machine arm 50 can rotate relative to the upper crossbeam 1 together with the bolster 2 to adapt to the situation where the bridge-building machine needs to turn an angle. In this embodiment, both the single-line lower cross beam 4 and the double-line lower cross beam 5 are provided with a beam transport vehicle installation position, so that the single-line lower cross beam 4 can be connected to the beam transport vehicle body 60 through the anchor assembly 80, and the double-line lower cross beam 5 can also be connected to the beam transport vehicle body 60 through the anchor assembly 80. When the single-line lower cross beam 4 and the double-line lower cross beam 5 are connected to the beam transport vehicle body 60, plate-type rubber bearings 70 are provided between the single-line lower cross beam 4 and the beam transport vehicle body 60 and between the double-line lower cross beam 5 and the beam transport vehicle body 60. The eye screws on the anchor assembly 80 should be removed before installing the upper cross beam 1 on the double-line saddle in the low position.

[0058] In this embodiment, by installing a bolster 2 on the upper crossbeam 1, the bridge erection machine can be installed at the bridge erection machine installation position 21 of the bolster 2, and by providing a single-line installation interface 11 and a double-line installation interface 12 on the upper crossbeam 1, by splicing the upper end of the support assembly 3 to the single-line installation interface 11, and installing a single-line lower crossbeam 4 at the lower end of the support assembly 3, a single-line backpack can be spliced ​​to form a single-line backpack, and by splicing the upper end of the support assembly 3 to the double-line installation interface 12, and replacing the single-line lower crossbeam 4 at the lower end of the support assembly 3 with a double-line lower crossbeam 5, a double-line backpack can be spliced ​​to form a double-line backpack (the bolster 2 and the upper crossbeam 1 are connected at the same time). When there is a situation where single and double lines are alternating during the erection of a high-speed railway line, there is no need to replace the entire carriage during the construction process. The installation position of the support assembly 3 can be directly replaced, and the single-line lower crossbeam 4 and the double-line lower crossbeam 5 can be interchanged to complete the conversion of the single-line and double-line carriages. Fewer parts need to be replaced, and the conversion of the single-line and double-line carriages can be achieved faster and more efficiently, saving time and manpower, improving construction efficiency, and speeding up the construction progress. It solves the technical problem in the related art that the overall replacement of the carriage is time-consuming and labor-intensive, seriously affecting the construction efficiency, and causing the construction progress to stagnate. The single- and double-line shared carriage provided in this embodiment saves more than half of the cost compared to the traditional one that requires a set of equipment for the single line and the double line, and improves the time efficiency of the single- and double-line carriage conversion during construction by more than 90%.

[0059] See also Fig.12 and Fig.17 As shown, in the above embodiment, the double-line lower cross beam 5 is longer in the left-right direction than the single-line lower cross beam 4 , and a weight-reducing hole is provided in the middle of the double-line lower cross beam 5 .

[0060] Further, in one embodiment, see Fig. 9 As shown, the upper crossbeam 1 is provided with a rotating shaft 13, and the bolster 2 is passed through the rotating shaft 13, so that the bolster 2 can rotate around the rotating shaft 13; the upper crossbeam 1 is also provided with an angle limiting device 14, and the angle limiting device 14 is provided on opposite sides of the bolster 2 to limit the rotation angle of the bolster 2. In this embodiment, the rotating shaft 13 is located at the center of the upper crossbeam 1, and a rotating hole is opened at the center of the bolster 2, so that the bolster 2 is passed through the rotating shaft 13 through the rotating hole, and the bolster 2 can rotate around the axis of the rotating shaft 13. See Figure 2 and Figure 4 As shown, two angle limiting devices 14 are installed on the front and rear sides of the upper crossbeam 1. The top surface of the angle limiting device 14 is higher than the bottom surface of the bolster 2, so that when the bolster 2 rotates around the axis of the rotating shaft 13, the bolster 2 will be blocked by the angle limiting device 14 when it rotates clockwise or counterclockwise to a certain angle and cannot rotate further. In this embodiment, the angle limiting devices 14 on both sides of the upper crossbeam 1 limit the rotation angle of the bolster 2 to within ±15°, preventing the bolster 2 from rotating more than 15°. And the angle limiting device 14 in this embodiment is preferably set as an anti-rotation pin, which is relatively fixed to the upper crossbeam 1.

[0061] On the basis of the above technical solution, in one embodiment, the bolster 2 may also be equipped with an electrical limit device, which is configured to limit the rotation angle of the bolster 2, and when the bolster 2 rotates to the extreme position, the electrical limit device issues an alarm. In this embodiment, the electrical limit device is fixed to the bolster 2, and the electrical limit device can receive and send electrical signals. The electrical limit device can not only limit the rotation angle of the bolster 2, but also issue an alarm when the bolster 2 rotates to the extreme position (i.e., ±15° in this embodiment) to remind the construction personnel. The electrical limit device in this embodiment is used in combination with the angle limiting device 14 to achieve double limiting of the bolster 2.

[0062] Preferably, a slide plate 23 ( Figure 8 As shown), the bolster 2 can slide on the upper beam 1 through the slide plate 23 during the rotation process. There is sliding friction between the bolster 2 and the upper beam 1, which can reduce the resistance of the bolster 2 during the rotation process, and the bolster 2 is not easy to wear.

[0063] Further, in some embodiments, see Figure 1As shown, the bottom surface of the upper cross beam 1 protrudes downward to form a boss 15, and the boss 15 is provided with the single-line installation interface 11; the double-line installation interface 12 includes a through hole 121 opened in the upper cross beam 1 and a pin hole connected to the through hole 121, and the axis of the pin hole is perpendicular to the axis of the through hole 121; the upper cross beam 1 is also provided with a whole vehicle hoisting hole 16, and the whole vehicle hoisting hole 16 is located between the boss 15 and the through hole 121.

[0064] In this embodiment, the bottom surface of the upper crossbeam 1 protrudes downward to form four bosses 15, each boss 15 is provided with a single-line installation interface 11, when a single-line carrier is required, the top of the support assembly 3 is installed to the single-line installation interface 11 of the four bosses 15. In addition, four double-line installation interfaces 12 are also provided in this embodiment, and the four double-line installation interfaces 12 are located on the outside of the four bosses 15. Each double-line installation interface 12 is in the form of a through hole 121 and a latch hole. The through hole 121 passes through the upper crossbeam 1 from top to bottom, and the latch hole passes through one side of the upper crossbeam 1 in the horizontal direction and is connected to the through hole 121. Each through hole 121 is provided with a latch hole. When a double-line carrier is required, the top of the support assembly 3 is inserted upward into the through hole 121, and the crossbeam latch 18 is inserted into the latch hole and the support assembly 3, thereby fixing the support assembly 3 to the upper crossbeam 1. This embodiment is also provided with four vehicle hoisting holes 16, so that the upper crossbeam 1 can also be used as a hoisting device for lifting the beam transport vehicle. When the entire beam transport vehicle needs to be lifted, the upper crossbeam 1 and the hoisting device are connected by a lifting rod, so that the entire vehicle can be lifted using a backpack.

[0065] See also Figures 9 to 11 As shown, in the above embodiment, the double-line installation interface 12 is set as a through hole 121, while the single-line installation interface 11 is not set as a through hole opened on the upper cross beam 1 like the double-line installation interface 12. In this way, not only are the single-line installation interface 11 and the double-line installation interface 12 set on the upper cross beam 1 at the same time, but also the structural strength of the upper cross beam 1 can be ensured. At the same time, since the installation position of the vehicle hoisting hole 16 is fixed, and the vehicle hoisting hole 16 happens to be located between the single-line installation interface 11 and the double-line installation interface 12, the single-line installation interface 11 and the double-line installation interface 12 adopt these two different structural forms, which also ensures that the single-line installation interface 11 and the double-line installation interface 12 will not hinder the setting of the four vehicle hoisting holes 16.

[0066] Further, in some optional embodiments, see Figure 6As shown, the support assembly 3 includes a long column 31, a middle column 32 and a short column 33, and the lengths of the long column 31, the middle column 32 and the short column 33 decrease successively; at least one of the long column 31, the middle column 32 and the short column 33 is installed between the upper beam 1 and the single-line lower beam 4, or between the upper beam 1 and the double-line lower beam 5.

[0067] In this embodiment, for the single-line saddle, according to the requirements of the bridge erection machine, there are three assembly states: high position (4265.5mm), middle position (3740mm) and low position (3055.5mm). Figure 1 and Figure 2 As shown), a long column 31 and a short column 33 are installed between the upper crossbeam 1 and the single-line lower crossbeam 4, and a middle column 32 is not installed, wherein the short column 33 is installed below the long column 31; for the single-line middle position rack ( Figure 3 and Figure 4 As shown), compared with the single-line high-position carriage, the single-line middle-position carriage is equipped with a middle column 32 and a short column 33, and no long column 31 is installed. The short column 33 is located below the middle column 32; for the single-line low-position carriage ( Figure 5 As shown in the figure, relative to the single-line mid-position rack, the middle column 32 is not installed, that is, the short column 33 is used, and the long column 31 is not installed. For the double-line rack, the long column 31, the middle column 32 and the short column 33 can also be combined or used alone. The appropriate column can be selected according to actual needs, and there is no limitation here. This embodiment uses columns of various lengths to form the support assembly 3, so that the single-line rack and the double-line rack can achieve different heights to meet different scene requirements.

[0068] Further, in one embodiment, see Fig.13 As shown, the support assembly 3 may further include: an upper column 34, wherein the upper column 34 has a plurality of sockets 341 arranged in a vertical direction, and the upper column 34 is used to be installed on the dual-line installation interface 12; a lifting mechanism 35, wherein the lifting mechanism 35 is used to connect the upper beam 1 and the upper column 34, and the lifting mechanism 35 can be plugged into the sockets 341 of different heights.

[0069] In this embodiment, the upper column 34 is arranged with a plurality of plug holes 341 of different heights along its axial direction, and the upper column 34 is used in the double-line bracket. When in use, the upper column 34 is inserted into the through hole 121 of the double-line mounting interface 12, and then the beam plug 18 is inserted into the plug hole of the upper beam 1 and one of the plug holes 341 of the upper column 34, thereby fixing the upper column 34 to the upper beam 1; the lower end of the upper column 34 can be used together with the long column 31, the middle column 32 or the short column 33 to form a double-line bracket with different heights. In this embodiment, when the double-line bracket is assembled, the upper end of the lifting mechanism 35 is fixed to the upper beam 1, and the lower end of the lifting mechanism 35 is directly or indirectly installed to the upper column 34. By plugging the lower end of the lifting mechanism 35 into the plug holes 341 of different heights below the upper beam 1, double-line brackets of different heights can be realized. Specifically, for the double-track gantry, there are four assembly states: super-high position, high position, middle position, and low position according to the requirements of the bridge-building machine. Fig.13 and Fig.14 As shown), the upper end of the upper column 34 is plugged into the upper crossbeam 1, the lower end of the upper column 34 is installed with the middle column 32, the lower end of the middle column 32 is installed with the long column 31, the lower end of the long column 31 is installed with the short column 33, and the lower end of the short column 33 is fixed to the double-line lower crossbeam 5; for the double-line high-position backpack, the short column 33, the middle column 32 and the long column 31 are not installed, and the lower end of the upper column 34 is directly fixed to the double-line lower crossbeam 5; for the double-line middle backpack ( Fig.15 and Fig.16 As shown in the figure, the hole position of a plug 341 on the upper column 34 is adjusted downward by 300mm relative to the lower end of the double-track high-position pack frame lifting mechanism 35; for the double-track low-position pack frame, the hole position of a plug 341 on the upper column 34 is adjusted downward by 300mm relative to the lower end of the double-track middle-position pack frame lifting mechanism 35. The maximum carrying height at the super-high position is 6405mm; the maximum carrying height at the high position is 4255mm; the maximum carrying height at the middle position is 3955mm (carrying height through the tunnel); the carrying height at the low position is 3655mm (carrying height through the tunnel).

[0070] The above embodiment provides an upper column 34 and a lifting mechanism 35. Through the cooperation between the upper column 34 and the lifting structure, the upper beam 1 can be raised and lowered, and a double-line carriage of different heights can be realized.

[0071] See also Fig.13 and Fig.14As shown, preferably, the lifting mechanism 35 may include: a conversion sleeve 351, which is sleeved on the upper column 34, and the conversion sleeve 351 is plugged into the socket 341 through a first latch 352, and the conversion sleeve 351 is provided with a connecting hole; a lifting cylinder 353, one end of the lifting cylinder 353 is used to be fixed to the upper beam 1, and the other end is plugged into the connecting hole through a second latch 354.

[0072] See also Fig.18 As shown, in this embodiment, for the double-line backpack, four upper columns 34 are plugged into each upper crossbeam 1, namely, two upper columns 34 on the left and two upper columns 34 on the right. A conversion sleeve 351 is sleeved on the two upper columns 34 on the left, and the front and rear sides of the conversion sleeve 351 are plugged into the insertion holes 341 of the corresponding upper columns 34 through a first latch 352, so that the conversion sleeve 351 is fixed to the two upper columns 34 on the left. The lifting cylinder 353 includes a cylinder body and a telescopic rod inserted in the cylinder body. The upper crossbeam 1 is provided with a first cylinder mounting seat 17 between the two through holes 121. The cylinder body is fixed to the first cylinder mounting seat 17 of the upper crossbeam 1. The lower end of the telescopic rod is inserted into the connecting hole of the conversion sleeve 351 through a second latch 354, so that the lifting cylinder 353 connects the conversion sleeve 351 and the upper crossbeam 1. The lifting mechanism 35 arranged on the two upper columns 34 on the right is consistent with that on the left, and is symmetrically arranged on the left and right sides.

[0073] When it is necessary to raise or lower the upper cross beam 1, first remove the bridge erecting machine arm 50 on the bolster 2, then remove the cross beam latch 18 inserted between the upper column 34 and the upper cross beam 1, and adjust the upper cross beam 1 to a certain height by controlling the extension and contraction of the lifting cylinder 353; the first latch 352 inserted between the conversion sleeve 351 and the upper column 34 can also be removed, and after the conversion sleeve 351 is moved upward or downward to a hole position of a suitable height, the first latch 352 is inserted into the conversion sleeve 351 and the upper column 34 again, so that the conversion sleeve 351 moves to different heights, and then adjust the height of the upper cross beam 1 by the extension and contraction of the lifting cylinder 353, thereby adjusting the height of the upper cross beam 1. In this embodiment, the height of the upper cross beam 1 is adjusted by the cooperation of the conversion sleeve 351 and the lifting cylinder 353, ensuring that the upper cross beam 1 will not fall after the cross beam latch 18 is removed, and the lifting cylinder 353 can drive the upper cross beam 1 to be lifted or lowered steadily. The lifting mechanism 35 can adjust the position of the upper crossbeam 1 relative to the upper column 34, and can achieve a lifting of 300 mm in a single time.

[0074] Furthermore, in one embodiment, the single- and double-line common backpack also includes an outer jacket extension section 6, which is used to be fixed to the bottom surface of the upper crossbeam 1 and is located directly below the double-line mounting interface 12, and the upper column 34 is also provided with a slideway; when the upper column 34 is installed on the double-line mounting interface 12, the upper column 34 is inserted into the outer jacket extension section 6, and the upper crossbeam 1 is slid on the slideway.

[0075] See also Fig.13 As shown, in this embodiment, the outer sleeve extension section 6 has an inner hole, and the outer sleeve extension section 6 is used in the double-line saddle, and the shape of the inner hole of the outer sleeve extension section 6 is consistent with the shape of the through hole 121. When in use, the outer sleeve extension section 6 is fixed directly below the through hole 121, and the inner hole of the outer sleeve extension section 6 is directly opposite to and connected to the through hole 121. The upper column 34 is inserted into the outer sleeve extension section 6 and the through hole 121, and the outer sleeve extension section 6 can increase the contact area between the upper beam 1 and the upper column 34. At the same time, the slideway provided on the upper column 34 can guide the upper beam 1, so that the upper beam 1 can move up and down smoothly relative to the upper column 34, and is not easy to deviate forward and backward or left and right.

[0076] In the above embodiment, the outer sleeve extension section 6 is fixed to the upper cross beam 1 by bolts, and in the connecting bolts between each outer sleeve extension section 6 and the upper cross beam 1, three corner points are connected by hinged hole bolts, and the rest are connected by ordinary bolts.

[0077] See also Fig.14 As shown, in one embodiment, the single- and double-track shared backpack may further include: a diagonal brace assembly 7, the diagonal brace assembly 7 includes a first diagonal brace 71, a second diagonal brace 72 and a length-adjustable diagonal brace 73, the first diagonal brace 71 is connected to the length-adjustable diagonal brace 73 via the second diagonal brace 72; a first base 8, the first base 8 is hinged to the first diagonal brace 71, and the first base 8 is fixed to the upper crossbeam 1; a second base 9, the second base 9 is hinged to the length-adjustable diagonal brace 73, and the second base 9 is used to be installed on the beam transport vehicle.

[0078] In this embodiment, the above-mentioned diagonal brace assembly 7 can be used in both single-line and double-line backpacks, wherein the lengths of the first diagonal brace 71 and the second diagonal brace 72 are fixed and cannot be adjusted, and the length of the middle length-adjustable diagonal brace 73 is adjustable. When in use, one end of the length-adjustable diagonal brace 73 is connected to the first diagonal brace 71, and the other end is connected to the second diagonal brace 72, and the axes of the first diagonal brace 71, the length-adjustable diagonal brace 73 and the second diagonal brace 72 are colinear. For a single-line backpack, the diagonal brace assembly 7 of the single-line high-position backpack is installed with the first diagonal brace 71 and the length-adjustable diagonal brace 73, but not the second diagonal brace 72; the diagonal brace assembly 7 of the single-line middle-position backpack is also not installed with the second diagonal brace 72, and the length of the length-adjustable diagonal brace 73 of the single-line middle-position backpack is shorter than that of the high-position backpack; the diagonal brace assembly 7 is not installed on the single-line low-position backpack. For a double-track carriage, all components of the diagonal brace assembly 7 are installed at the super-high position; the diagonal brace assembly 7 at the high position relative to the super-high position is not installed with the second diagonal brace 72; and the second diagonal brace 72 is also not installed at the middle position.

[0079] The diagonal brace assembly 7 in this embodiment is a connecting piece between the upper cross beam 1 and the beam transport vehicle body 60. The diagonal brace assembly 7 can support the entire backpack from the opposite sides of the upper cross beam 1 to ensure its stability and strength. At the same time, the adjustment handle provided on the rotating length-adjustable diagonal brace 73 can adjust the length of the entire diagonal brace assembly 7 to adapt to backpacks of different heights.

[0080] When using the above-mentioned single-line and double-line shared cradle, the cradle and the beam transport vehicle body 60 are installed through the anchor assembly 80, and then other components are installed in sequence. The bridge erection machine is placed on the plate rubber support 70 on the bolster 2 and connected to the bolster 2 through the locking pin 22. The single-line lower crossbeam 4 is removed in the single-line mode, and some double-line mode components are added to complete the single-line and double-line conversion. When the beam transport vehicle is hoisted by the cradle, the cradle must be installed first, and connected to the cradle through the sling and the sling rod, so as to lift the beam transport vehicle.

[0081] Further, see Fig.19 and Fig. 20 As shown, the single- and double-track common carriage also includes an in-situ U-turn device, which includes: an in-situ U-turn turntable, which includes a lower fixed disk 10 and an upper rotating disk 20, the lower fixed disk 10 and the upper rotating disk 20 are coaxially connected for rotation, and a driving mechanism 40 for driving the upper rotating disk 20 to rotate is provided on the lower fixed disk 10. The driving mechanism 40 is connected to the lower fixed disk 10 to drive the upper rotating disk 20 to rotate 360° in the forward and reverse directions on the lower fixed disk 10. When the lower fixed disk 10 and the upper rotating disk 20 perform an in-situ U-turn on the bridge erection machine, the driving mechanism 40 only needs to drive the upper rotating disk 20 to rotate 180° in the forward and reverse directions.

[0082] The bridge erection machine fixing base 30 includes two sets of cushion beams 301 which are parallel to each other and spaced apart and fixed on the top of the upper rotating disk 20. The two sets of cushion beams 301 are provided with a first locking hole 302 and a second locking hole 303 for connecting the bridge erection machine arms 50 of different widths. The two sets of cushion beams 301 are used to fix and support the bridge erection machine arms 50. The first locking hole 302 is used to fix a bridge erection machine with a narrower bridge erection machine arm 50, such as a bridge erection machine with a lifting tonnage of 900 tons, and the second locking hole 303 is used to fix a bridge erection machine with a wider bridge erection machine arm 50, such as a bridge erection machine with a lifting tonnage of 1000 tons ( Fig. 22 shown).

[0083] When the on-site U-turn device makes a U-turn on the bridge-building machine on-site, firstly, the bridge-building machine arm 50 of the bridge-building machine to be turned on-site is dropped onto the bridge-building machine fixing seat 30, and then the first locking hole 302 or the second locking hole 303 is selected according to the width of the bridge-building machine arm 50 of the bridge-building machine to be turned on-site, and finally, the bridge-building machine arm 50 is fixed on the cushion beam 301 after the locking pin is inserted into the first locking hole 302 or the second locking hole 303, thereby finally realizing the fixed connection between the bridge-building machine arm 50 and the on-site U-turn device.

[0084] The on-site U-turn device applicable to various bridge erecting machines of the embodiment of the present application is provided with two sets of spaced-apart parallel beams 301 on the top of the upper rotating disk 20, and both sets of spaced-apart beams 301 are provided with first lock holes 302 and second lock holes 303 for connecting bridge erecting machine arms 50 of different widths. The first lock holes 302 and the second lock holes 303 can adapt to and fix single-line bridge erecting machines and double-line bridge erecting machines of different tonnages and different widths of bridge erecting machine arms 50.

[0085] After the arm 50 of the single-line bridge erecting machine or the double-line bridge erecting machine is fixedly connected to the cushion beam 301 through the first lock hole 302 or the second lock hole 303, the upper rotating disk 20 can be driven by the driving mechanism 40 on the lower fixed disk 10 to rotate 180°, thereby realizing the 180° turn of the bridge erecting machine in situ. Fig. 22 and Fig.23 Replacing the bolster 2 in the figure with the above-mentioned on-the-spot U-turn device can realize a single-line or double-line on-the-spot 180° U-turn.

[0086] In some alternative embodiments: See Fig.19 As shown, the embodiment of the present application provides an on-site U-turn device applicable to various bridge erecting machines, and the two ends of the cushion beam 301 of the on-site U-turn device are respectively provided with a first locking hole 302 and a second locking hole 303. The distance between the two first locking holes 302 located at adjacent ends of the two groups of cushion beams 301 is smaller than the distance between the two second locking holes 303 located at adjacent ends of the two groups of cushion beams 301.

[0087] In the embodiment of the present application, both ends of each cushion beam 301 are respectively provided with a bridge-building machine arm 50 for fixing a certain width, wherein the distance between two first locking holes 302 located at adjacent ends of the two groups of cushion beams 301 is smaller than the distance between two second locking holes 303 located at adjacent ends of the two groups of cushion beams 301, the first locking hole 302 is used to fix the bridge-building machine arm 50 with a narrower width, and the second locking hole 303 is used to fix the bridge-building machine arm 50 with a wider width.

[0088] In some alternative embodiments: See Fig.19 As shown, an embodiment of the present application provides an on-site U-turn device suitable for a variety of bridge-building machines, the top of the cushion beam 301 of the on-site U-turn device is fixedly connected with a rubber pad 304, the first locking hole 302 and the second locking hole 303 are both elongated holes, and the length direction of the first locking hole 302 and the second locking hole 303 is perpendicular to the length direction of the cushion beam 301.

[0089] The top of the cushion beam 301 of the embodiment of the present application is fixedly connected with a rubber pad 304, which is not only used to increase the friction between the bridge erection machine arm 50 and the cushion beam 301, but also used to protect the bridge erection machine arm 50 from being worn and bumped. The first lock hole 302 and the second lock hole 303 are both long holes, which facilitate the assembly of the bridge erection machine arm 50 and the cushion beam 301, and improve the assembly and installation efficiency of the bridge erection machine arm 50 and the cushion beam 301.

[0090] In some alternative embodiments: See Fig.19 and Fig. 20 As shown, the embodiment of the present application provides an in-situ U-turn device applicable to various bridge erection machines, wherein the lower fixed plate 10 of the in-situ U-turn device comprises a lower mounting seat 101, and a rotating shaft assembly 102 fixedly connected to the top of the lower mounting seat 101, and the rotating shaft assembly 102 is used to rotatably connect to the upper rotating plate 20. A rotating shaft mounting hole 205 connected to the rotating shaft assembly 102 is provided at the center of the upper rotating plate 20.

[0091] The lower mounting seat 101 of the lower fixed plate 10 is used to fix the turntable at the set position, and the shaft assembly 102 on the lower mounting seat 101 is used to rotatably connect the upper rotating plate 20, and the upper rotating plate 20 rotates on the lower mounting seat 101 with the shaft assembly 102 as the rotating shaft 13. The lower mounting seat 101 and the upper rotating plate 20 can be connected by a thrust ball bearing or slidably connected by a pair of smooth annular friction pairs, and grease is applied to the friction surface of the annular friction pair to reduce sliding resistance.

[0092] In some alternative embodiments: See Figures 19 to 21As shown, the embodiment of the present application provides an on-site U-turn device applicable to various bridge erecting machines, wherein the upper rotating disk 20 of the on-site U-turn device comprises an upper flange 201 and a lower flange 202 coaxially arranged at intervals from top to bottom, and the upper flange 201 and the lower flange 202 are fixedly connected by a plurality of spacers 203 with gradually increasing diameters. The edges of the upper flange 201 and the lower flange 202 are provided with a plurality of circumferentially arranged plug holes 204, and the plug holes 204 on the upper flange 201 and the lower flange 202 are connected to each other from top to bottom.

[0093] The driving mechanism 40 includes a hydraulic cylinder 401 rotatably connected to the lower fixed plate 10, and the telescopic arm of the hydraulic cylinder 401 is plug-in-unplugged and connected to the plug holes 204 on the upper flange 201 and the lower flange 202 through the plug connector 402. A second cylinder mounting seat 103 for rotatably connecting the hydraulic cylinder 401 is fixedly connected to the lower mounting seat 101, and the hydraulic cylinder 401 is rotatably connected to the second cylinder mounting seat 103 through a cylindrical pin. The hydraulic cylinder 401 rotates in the horizontal direction on the second cylinder mounting seat 103 with the cylindrical pin as the rotating shaft 13.

[0094] There are two groups of driving mechanisms 40, and the two groups of driving mechanisms 40 are centrally symmetrically arranged on the lower fixed plate 10. The two groups of driving mechanisms 40 are used to drive the upper rotating plate 20 to rotate 180° in the forward and reverse directions. The two groups of driving mechanisms 40 can synchronously drive the upper rotating plate 20 to rotate 180° in the forward and reverse directions, and can also alternately drive the upper rotating plate 20 to rotate 180° in the forward and reverse directions.

[0095] When in use, the lower fixed plate 10 is fixedly connected to the backpack bracket by bolts. At this time, the lower fixed plate 10, on the one hand, serves to connect the in-situ U-turn device with the backpack bracket, and on the other hand, serves as a support for the upper rotating plate 20. By extending the hydraulic cylinder 401, the upper rotating plate 20 is pushed to rotate 18° at a time. After it is in place, the hydraulic cylinder 401 retracts, the connector 402 is removed, and inserted into the next connector hole 204 position, and the hydraulic cylinder 401 extends again. After alternating 10 times, a 180° U-turn of the bridge erecting machine can be achieved.

[0096] The specific operation process is as follows:

[0097] 1. The hydraulic cylinders 401 of the two sets of driving mechanisms 40 slowly drive the upper rotating plate 20 to rotate relative to the lower fixed plate 10.

[0098] 2. In a single cycle, the upper rotating disk 20 rotates 18° relative to the lower fixed disk 10, and the driving time of the hydraulic cylinder 401 is designed to be 5 minutes.

[0099] 3. When the position of the next plug hole 204 of the upper rotating disk 20 is about to reach the initial driving position of the hydraulic cylinder 401, the hydraulic cylinder 401 is jogged forward.

[0100] 4. After the hydraulic cylinder 401 is in place, remove the connector 402, retract the hydraulic cylinder 401 to retract the cylinder rod to the initial position, and insert and remove the connector 402 at the hole.

[0101] 5. The plug-in / plug-out of the connectors 402 of the hydraulic cylinders 401 of the two sets of drive mechanisms 40 should be performed alternately. The connectors 402 of the hydraulic cylinders 401 of the two sets of drive mechanisms 40 must not be pulled out at the same time.

[0102] 6. Repeat this operation 10 times to complete the U-turn of the bridge-building machine.

[0103] The single-track and double-track shared saddle frame provided in this embodiment belongs to the high-speed railway beam erection equipment. The single-track and double-track shared saddle frame is fixedly connected to the beam transport vehicle when in use. It can be divided into a single-track saddle frame and a double-track saddle frame according to the use conditions. The single-track saddle frame is further divided into a front single-track saddle frame and a rear single-track saddle frame. The front single-track saddle frame and the rear single-track saddle frame have the same structure. The double-track saddle frame is also divided into a front double-track saddle frame and a rear double-track saddle frame. The front double-track saddle frame and the rear double-track saddle frame have the same structure. By replacing the lower cross beam and adding some double-track saddle frame components, the single-track and double-track saddle frames can be quickly switched (the single-track components can all be used for the double-track saddle frame except the single-track lower cross beam 4). The switching time is shortened from the traditional replacement of the integral saddle frame, which takes 1 day, to the current 1 hour or less. The double-track state can appropriately take into account the single-track mode to carry the bridge erection machine, greatly improve the construction efficiency, and is suitable for the single-track and double-track carrying of the 1000-ton bridge erection machine. At the same time, through the single-track and double-track shared components, the weight of the whole machine is reduced, the production cost is greatly saved, and it is easy to install and transport. And through one hole for double lifting, that is, through the whole vehicle lifting hole 16 on the upper crossbeam 1, it is possible to lift the beam transport vehicle onto the bridge in the single-line whole assembly mode and the beam transport vehicle onto the bridge in the double-line whole assembly mode, which greatly saves the time of lifting the beam transport vehicle onto the bridge, and there is no need to replace different lifting tools, which improves the work efficiency of personnel, saves time and construction period. In conjunction with the above-mentioned on-site U-turn device, a 180° on-site U-turn of a 1,000-ton bridge erecting machine in single-line and double-line modes can be achieved, without the need to make two sets of U-turn devices, saving production costs and improving work efficiency.

[0104] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0105] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0106] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A single-line and double-line common carriage, characterized in that: It includes: An upper crossbeam (1), wherein a bolster (2) is rotatably mounted on the upper crossbeam (1), wherein the bolster (2) is provided with a bridge erection machine mounting position (21), and wherein the upper crossbeam (1) is provided with a single-line mounting interface (11) and a double-line mounting interface (12); A support assembly (3), the support assembly (3) being installed on the single-line installation interface (11) or the dual-line installation interface (12); A single-line lower cross beam (4) and a double-line lower cross beam (5), wherein both the single-line lower cross beam (4) and the double-line lower cross beam (5) are provided with a beam transport vehicle installation position, and the single-line lower cross beam (4) and the double-line lower cross beam (5) are selectively installed on the support assembly (3).

2. The single-line and double-line common carriage according to claim 1, characterized in that: The upper crossbeam (1) is provided with a rotating shaft (13), and the bolster (2) is passed through the rotating shaft (13), so that the bolster (2) can rotate around the rotating shaft (13); The upper cross beam (1) is also provided with an angle limiting device (14), and the angle limiting device (14) is arranged on two opposite sides of the bolster (2) to limit the rotation angle of the bolster (2).

3. The single-line and double-line common carriage as claimed in claim 2, characterized in that: The bolster (2) is also equipped with an electrical limit device, which is configured to limit the rotation angle of the bolster (2), and when the bolster (2) rotates to an extreme position, the electrical limit device issues an alarm.

4. The single-line and double-line common carriage according to claim 1, characterized in that: The bottom surface of the upper cross beam (1) protrudes downward to form a boss (15), and the boss (15) is provided with the single-wire installation interface (11); The dual-wire installation interface (12) comprises a through hole (121) formed in the upper crossbeam (1) and a pin hole connected to the through hole (121), wherein the axis of the pin hole is perpendicular to the axis of the through hole (121); The upper cross beam (1) is also provided with a whole vehicle hoisting hole (16), and the whole vehicle hoisting hole (16) is located between the boss (15) and the through hole (121).

5. The single-line and double-line common carriage according to claim 1, characterized in that: The support assembly (3) comprises a long column (31), a middle column (32) and a short column (33), and the lengths of the long column (31), the middle column (32) and the short column (33) decrease in sequence; At least one of the long column (31), the middle column (32) and the short column (33) is installed between the upper crossbeam (1) and the single-line lower crossbeam (4), or between the upper crossbeam (1) and the double-line lower crossbeam (5).

6. The single-line and double-line common carriage according to claim 5, characterized in that: The support assembly (3) further comprises: An upper column (34), wherein the upper column (34) has a plurality of jacks (341) arranged in a vertical direction, and the upper column (34) is used to be installed on the dual-wire installation interface (12); A lifting mechanism (35) is provided, wherein the lifting mechanism (35) is used to connect the upper cross beam (1) and the upper column (34), and the lifting mechanism (35) can be inserted into the insertion holes (341) of different heights.

7. The single-line and double-line common carriage according to claim 6, characterized in that: The lifting mechanism (35) comprises: A conversion sleeve (351), the conversion sleeve (351) is sleeved on the upper column (34), and the conversion sleeve (351) is plugged into the plug hole (341) through a first latch (352), and the conversion sleeve (351) is provided with a connection hole; A lifting cylinder (353), one end of which is used to be fixed to the upper crossbeam (1), and the other end of which is plugged into the connecting hole via a second latch (354).

8. The single-line and double-line common carriage according to claim 6, characterized in that: The single-line and double-line common carriage also includes an outer cover extension section (6), the outer cover extension section (6) is used to be fixed to the bottom surface of the upper crossbeam (1), and is correspondingly located directly below the double-line installation interface (12), and the upper column (34) is also provided with a slideway; When the upper column (34) is installed on the double-line installation interface (12), the upper column (34) is inserted into the outer sleeve extension section (6), and the upper crossbeam (1) is slidably mounted on the slideway.

9. The single-line and double-line common carriage according to claim 1, characterized in that: The single-line and double-line common carriage also includes: A diagonal brace assembly (7), the diagonal brace assembly (7) comprising a first diagonal brace (71), a second diagonal brace (72) and a length-adjustable diagonal brace (73), the first diagonal brace (71) being connected to the length-adjustable diagonal brace (73) via the second diagonal brace (72); A first base (8), the first base (8) being hinged to the first diagonal support (71), and the first base (8) being fixed to the upper crossbeam (1); A second base (9), the second base (9) is hinged to the length-adjustable diagonal brace (73), and the second base (9) is used for being installed on a beam transport vehicle.

10. The single-line and double-line common carriage according to claim 1, characterized in that: The single- and double-track common carriage also includes an on-site U-turn device, and the on-site U-turn device includes: An on-site U-turn turntable, the on-site U-turn turntable comprising a lower fixed disk (10) and an upper rotating disk (20), the lower fixed disk (10) and the upper rotating disk (20) being coaxially rotatably connected, and a driving mechanism (40) for driving the upper rotating disk (20) to rotate is provided on the lower fixed disk (10); A bridge erection machine fixing seat (30), the bridge erection machine fixing seat (30) comprising two groups of cushion beams (301) fixed to the top of the upper rotating disk (20) and arranged in parallel and at intervals, the two groups of cushion beams (301) are both provided with a first locking hole (302) and a second locking hole (303) for connecting bridge erection machine arms (50) of different widths.

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