A bridge erection machine whole machine in situ head rotation device and head rotation method

Abstract

The present invention discloses a device for turning the whole bridge erecting machine in situ, which comprises: a first carrier, a second carrier, a first bridge erecting machine carrier and a second bridge erecting machine carrier, wherein the first bridge erecting machine carrier comprises a fixed part, a connecting part and a rotating part, wherein the connecting part is arranged between the fixed part and the rotating part and is used to support and rotatably connect the rotating part above the fixed part, wherein the upper end of the connecting part is fixedly connected to the rotating part and the rotating part can rotate relative to the fixed part around the central axis of the connecting part, and the second bridge erecting machine carrier is installed on the second carrier and is used to carry one end of the bridge erecting machine so that the bridge erecting machine rotates around the central axis of the connecting part under the support of the first bridge erecting machine carrier and the carrying of the second bridge erecting machine carrier. When the present invention turns, the whole bridge erecting machine rotates without disassembly and reassembly, thereby reducing the labor intensity of on-site employees and saving the cost of renting lifting equipment.

Description

Technical Field

[0001] The invention relates to the technical field of bridge erection construction, and in particular to an in-situ head rotating device and a head rotating method for a bridge erection machine. Background Art

[0002] The JQL185 bridge erecting machine can replace the traditional track-laying operation by the track-changing method, achieving the goal of laying seamless lines in one go, reducing construction costs and improving construction efficiency. In recent years, it has been increasingly welcomed by track-laying construction units and construction units.

[0003] However, due to its structural characteristics, it can only lay bridges in one direction. When it comes to seamless line construction with many points and long lines, it is necessary to turn around constantly. The limitation of the one-way laying of the JQL185 bridge-laying machine is particularly prominent. There are two relatively primitive methods: 1. Disassemble it into parts, turn around one by one, and then assemble them one by one; it takes at least a week and is labor-intensive and time-consuming; 2. Level a large square with a circle of 100 meters, organize two trucks to carry the whole machine, and use the method of "steering back and forth, reciprocating forward and backward", which takes a day to complete the turn; the disadvantage is that a large square with a circle of 100 meters is hard to come by. Summary of the invention

[0004] The purpose of the invention is to overcome the deficiencies in the above-mentioned prior art and to provide a device for turning the entire bridge erecting machine in situ. When turning, the entire machine rotates without the need for disassembly and reassembly, thereby improving the turning efficiency, reducing the turning time, reducing the labor intensity of on-site employees, and saving the cost of renting lifting equipment.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a device for rotating the entire bridge-building machine in situ, characterized in that it includes: a first carrier, a second carrier, a first bridge-building machine backpack and a second bridge-building machine backpack, the first bridge-building machine backpack including a fixed part, a connecting part and a rotating part, the rotating part is arranged above the fixed part and can rotate relative to the fixed part, the connecting part is arranged between the fixed part and the rotating part and is used to support and rotate the rotating part above the fixed part, the lower end of the connecting part is fixedly connected to the fixed part, the upper end of the connecting part is fixedly connected to the rotating part and the rotating part can rotate around the central axis of the connecting part relative to the fixed part, the fixed part is fixedly arranged on the first carrier, the second bridge-building machine backpack is installed on the second carrier and is used to carry one end of the bridge-building machine so that the bridge-building machine rotates around the central axis of the connecting part under the support of the first bridge-building machine backpack and under the carrying of the second bridge-building machine backpack.

[0006] The above-mentioned in-situ head rotation device for the entire bridge-building machine is characterized in that the fixed part includes a base and an annular track, the annular track is fixedly installed on the upper surface of the base, and the base is fixedly connected to the first carrier vehicle and is used to support the annular track.

[0007] The above-mentioned in-situ head rotation device for the entire bridge-building machine is characterized in that the connecting part includes a tower base and a rotating connecting head, the rotating connecting head is installed on the upper part of the tower base and can rotate around the central axis of the connecting part, and the bottom of the tower base is fixed on the first carrier vehicle.

[0008] The above-mentioned in-situ head-turning device for a bridge-building machine is characterized in that the rotating part includes a first shoulder pole beam, a first side support column and a second side support column, the upper end of the first side support column is fixedly connected to the lower part of one end of the first shoulder pole beam, the lower end of the first side support column is in rolling contact with the circular track, the upper end of the second side support column is fixedly connected to the lower part of the other end of the first shoulder pole beam, and the lower end of the second side support column is in rolling contact with the circular track.

[0009] The above-mentioned in-situ head-turning device for a bridge-building machine is characterized in that the first side support column and the second side support column have the same structure and both include a pillar and a carrying trolley, the upper end of the pillar is fixedly connected to the lower part of one end of the first shoulder beam, the lower end of the pillar is fixedly connected to the upper end of the carrying trolley, the running wheels of the carrying trolley are in contact with the circular track and the running wheels cooperate with the track surface of the circular track so as to roll back and forth along the circular track, and the pillar is composed of a plurality of short columns with the same structure and the same or different lengths that can be detachably spliced.

[0010] The above-mentioned in-situ head-turning device for the entire bridge-building machine is characterized in that the rotating part also includes a reinforcing rod and a limit stop block, one end of the reinforcing rod is hinged to the bottom of the first shoulder pole beam, and the other end of the reinforcing rod is hinged to the support pillar, and the limit stop block is fixedly arranged on the upper surface of the first shoulder pole beam and is used to limit the bridge-building machine placed on the first shoulder pole beam.

[0011] The above-mentioned in-situ head turning device for a bridge-building machine is characterized in that the fixed part also includes an adjustment column, and the adjustment column includes an adjustment column, a support height adjustment device and a support base plate. The top of the adjustment column is fixedly connected to the bottom of the base, and the support base plate is arranged below the adjustment column. The support height adjustment device is arranged between the adjustment column and the support base plate and the adjustment column forms a support for the base by adjusting the distance from the bottom of the column to the support base plate. There are multiple adjustment columns, and the multiple adjustment columns are evenly arranged below the base.

[0012] The above-mentioned in-situ head-turning device for a bridge-building machine is characterized in that the second bridge-building machine carrier frame includes a fixed tower, a second shoulder pole beam and a shoulder pole beam support column, the second shoulder pole beam is horizontally arranged and located above the fixed tower, the top of the fixed tower is fixedly connected to the lower surface of the middle part of the second shoulder pole beam, the number of the shoulder pole beam support columns is two, the two shoulder pole beam support columns are respectively arranged below the left and right ends of the second shoulder pole beam and are used to support the left and right ends of the second shoulder pole beam, the bottom of the fixed tower is fixedly installed on the second carrier vehicle, the two shoulder pole beam support columns are both vertically arranged and both are fixedly connected to the second carrier vehicle.

[0013] The above-mentioned in-situ head-turning device for the whole bridge-building machine is characterized in that the in-situ head-turning device for the whole bridge-building machine also includes a distance measuring mechanism, and the distance measuring mechanism includes a first fixed pulley, a second fixed pulley, a third fixed pulley, a weight, a pull wire and a scale mark, wherein the first fixed pulley is installed on the side wall in the middle of the second shoulder beam and the first fixed pulley is perpendicular to the first fixed pulley installation surface, the second fixed pulley is installed on the second carrier vehicle, and the second fixed pulley and the first fixed pulley are arranged perpendicular to each other, the third fixed pulley and the first fixed pulley are installed on the same side of the second shoulder beam, and the third fixed pulley is located on one side of the second shoulder beam, one end of the pull wire is fixed on the rotating part, and the other end of the pull wire passes through the first fixed pulley, the second fixed pulley and the third fixed pulley in sequence and is fixedly connected to the weight and can hang the weight below the third fixed pulley, and the scale mark is arranged on the second bridge-building machine backpack near the weight along the vertical direction.

[0014] The present invention also discloses a method for rotating the whole bridge erecting machine in situ, characterized in that the method comprises:

[0015] Step 1: Select a site for the bridge erection machine to turn around, and plan the site where the first carrier is set and the site where the second carrier moves, roll and level the above sites, and mark the sideline of the second carrier's path in the site where the second carrier moves;

[0016] Step 2: transport the bridge erecting machine to the designated location;

[0017] Step 3: assemble the in-situ head rotation device of the whole bridge erecting machine on site;

[0018] Step 4: Adjust the support pillars and level the circular track;

[0019] Step 5: Drive the second carrier vehicle, rotate the vehicle body to be perpendicular to the arm of the bridge erecting machine, and then enter under the double arms of the bridge erecting machine and align them;

[0020] Step 6: The bridge erector retracts each leg and lowers the double arms of the bridge erector so that one end of the double arms of the bridge erector lands on the first shoulder pole beam and the other end lands on the second shoulder pole beam, and the legs of the bridge erector are vacated;

[0021] Step 7: Drive the second carrier vehicle, mark the edge of the second carrier vehicle's path along the site, and slowly move forward at a speed less than or equal to 0.5 km / h. During the moving process, pay attention to the relative position change between the weight block and the scale mark in the distance measuring mechanism at any time, and adjust the direction in time;

[0022] Step 8: After the second carrier vehicle arrives at the end of the semicircular travel path of the second carrier vehicle, the bridge erecting machine supports each leg, and the bridge erecting machine lifts both arms of the bridge erecting machine away from the first shoulder pole beam and the second shoulder pole beam;

[0023] Step 9, release the adjustment support of the first carrier vehicle, drive the first carrier vehicle carrying the first bridge erecting machine frame and the second carrier vehicle carrying the second bridge erecting machine frame to leave the site, and complete the rotation of the entire bridge erecting machine.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. The present invention rotates the whole machine when turning, and does not need to be disassembled and reassembled, which improves the turning efficiency, reduces the turning time, reduces the labor intensity of on-site employees, and saves the cost of renting lifting equipment.

[0026] 2. When the invention turns around, it occupies a small area; the area required for the traditional car to turn around is: 100×100=10000m 2 , while this device only needs 30×30=900m 2 , which is less than 1 / 10 of the traditional venue area.

[0027] 3. The invention has fast turning speed and high efficiency.

[0028] 4. The turning process of the present invention is safe and stable. Since the tower base and the rotating connecting head of the connecting part of the present invention are connected by a turntable bearing, the rotation is flexible; the bottoms of the two side support columns at both ends of the first shoulder pole beam of the present invention are in rolling contact with the circular track, and the first shoulder pole beam is supported and protected throughout the turning process; the present invention forms a stable support for the circular track and the first carrier vehicle by adjusting the pillars, and installs a distance measuring mechanism for full-time monitoring, so the entire turning process is safer and more stable.

[0029] The invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the positional relationship between the in-situ head rotating device of the bridge-building machine and the structure of the bridge-building machine of the present invention.

[0031] Figure 2 It is a schematic diagram of the head rotation process of the bridge erecting machine of the present invention.

[0032] Figure 3 for Figure 1 AA section view.

[0033] Figure 4 for Figure 1 BB cross-sectional view.

[0034] Figure 5 A schematic structural diagram of the connecting portion of the present invention.

[0035] Description of reference numerals:

[0036] 1—first carrier vehicle; 2—second carrier vehicle; 3—bridge erecting machine;

[0037] 100—first bridge crane carrier; 110—fixed part;

[0038] 111—base; 112—annular track; 113—adjusting support;

[0039] 113-1—adjustment column; 113-2 support height adjustment device;

[0040] 113-3—support base plate; 120—connecting part; 121—tower base;

[0041] 122—rotating connector; 130—rotating portion; 131—first shoulder pole beam;

[0042] 132—first side support column; 132-1—pillar; 132-2—carrying trolley;

[0043] 133—second side support column; 134—strengthening tie rod; 135—limit stopper;

[0044] 200—Second bridge crane carrier; 210—Fixed tower;

[0045] 220—second shoulder pole beam; 230—shoulder pole beam support column; 301—first fixed pulley;

[0046] 302—second fixed pulley; 303—third fixed pulley; 304—weight block;

[0047] 305—pull line; 306—scale marking line. DETAILED DESCRIPTION

[0048] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0049] It should be noted that the concepts of first, second, etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0050] It should be noted that the directional terms such as top, bottom, upward, downward, etc. mentioned in the present invention are defined relative to the directions in the respective drawings, and they are relative concepts, and thus can vary according to different positions and different practical states. Therefore, these or other directional terms should not be understood as limiting terms.

[0051] It should be noted that the one or more modifications mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as one or more.

[0052] like Figures 1 to 4 As shown, the present invention discloses a whole-machine in-situ head-turning device for a bridge-building machine, which comprises: a first carrier 1, a second carrier 2, a first bridge-building machine carrier 100 and a second bridge-building machine carrier 200, wherein the first bridge-building machine carrier 100 comprises a fixed portion 110, a connecting portion 120 and a rotating portion 130, wherein the rotating portion 130 is arranged above the fixed portion 110 and can rotate relative to the fixed portion 110, the connecting portion 120 is arranged between the fixed portion 110 and the rotating portion 130 and is used to support and rotatably connect the rotating portion 130 above the fixed portion 110, and the connecting portion 120 is arranged between the fixed portion 110 and the rotating portion 130. The lower end of the part 120 is fixedly connected to the fixed part 110, the upper end of the connecting part 120 is rotated to connect the rotating part 130 and the rotating part 130 can rotate around the central axis of the connecting part 120 relative to the fixed part 110, the fixed part 110 is fixedly arranged on the first carrier 1, the second bridge crane frame 200 is installed on the second carrier 2 and is used to carry one end of the bridge crane 3 so that the bridge crane 3 can rotate around the central axis of the connecting part 120 under the support of the first bridge crane frame 100 and the carrying of the second bridge crane frame 200.

[0053] In this embodiment, the first bridge erection machine carrier 100 is installed on the first carrier 1, and the second bridge erection machine carrier 200 is installed on the second carrier 2. The bridge erection machine 3 is carried by the first bridge erection machine carrier 100 and the second bridge erection machine carrier 200, the first carrier 1 is stationary, and the second carrier 2 makes an arc motion with the distance between the first carrier 1 and the second carrier 2 as the radius, and the bridge erection machine 3 is carried and rotated around the central axis of the connecting part 120. When the second carrier 2 travels 1 / 2 of the circle, the bridge erection machine 3 completes the turn. The turn device can realize the turn of the bridge erection machine 3 through two carriers and the carriers installed on the carriers, without disassembling the bridge erection machine 3, and the turn speed is fast and the efficiency is high.

[0054] like Figure 3 As shown, the fixing portion 110 includes a base 111 and an annular track 112 . The annular track 112 is fixedly mounted on the upper surface of the base 111 . The base 111 is fixedly connected to the first carrier vehicle 1 and is used to support the annular track 112 .

[0055] like Figure 3 and Figure 5 As shown, the connection part 120 includes a tower base 121 and a rotating connection head 122, the rotating connection head 122 is installed on the upper part of the tower base 121 and can rotate around the central axis of the connection part 120, and the bottom of the tower base 121 is fixed on the first carrier 1. The central axis of the connection part 120 is perpendicular to the plane where the track surface of the circular track 112 is located, and the central axis of the connection part 120 passes through the center of the circular track 112. The top of the rotating connection head 122 is fixedly connected to the middle of the lower surface of the first shoulder beam 131.

[0056] In this embodiment, the tower base 121 and the rotating connector 122 are rotatably connected via a turntable bearing, a combined bearing or a tapered roller bearing. The rotating connector 122 is flexible in rotation relative to the tower base 121 and can well withstand forces in the vertical and horizontal directions. The rotating connector 122 can be a rotating core disk of a disk-shaped structure.

[0057] like Figure 3 As shown, the rotating part 130 includes a first shoulder pole beam 131, a first side support column 132 and a second side support column 133, the upper end of the first side support column 132 is fixedly connected to the lower part of one end of the first shoulder pole beam 131, the lower end of the first side support column 132 is in rolling contact with the circular track 112, the upper end of the second side support column 133 is fixedly connected to the lower part of the other end of the first shoulder pole beam 131, and the lower end of the second side support column 133 is in rolling contact with the circular track 112,

[0058] like Figure 3As shown, the first side support column 132 and the second side support column 133 have the same structure and both include a pillar 132-1 and a carrying trolley 132-2, the upper end of the pillar 132-1 is fixedly connected to the lower part of one end of the first shoulder beam 131, the lower end of the pillar 132-1 is fixedly connected to the upper end of the carrying trolley 132-2, the running wheels of the carrying trolley 132-2 are in contact with the circular track 112 and the running wheels cooperate with the track surface of the circular track 112 to roll back and forth along the circular track 112, and the pillar 132-1 is composed of a plurality of short columns with the same structure and the same or different lengths that can be detachably spliced.

[0059] In this embodiment, the short column is prepared by cutting a steel pipe into the same length or different lengths and then welding flanges at both ends of the steel pipe. Multiple short columns are connected in sequence and adjacent flanges are connected by bolts to form a support column 132-1. The first side support column 132 and the second side support column 133 support both ends of the first shoulder beam 131. At the same time, the lower ends of the first side support column 132 and the second side support column 133 can roll along the annular track 112 and rotate with the first shoulder beam 131 during the turning process of the bridge erection machine 3.

[0060] like Figure 3 As shown, the rotating part 130 also includes a reinforcing rod 134 and a limit block 135, one end of the reinforcing rod 134 is hinged to the bottom of the first shoulder beam 131, and the other end of the reinforcing rod 134 is hinged to the support 132-1, and the limit block 135 is fixedly arranged on the upper surface of the first shoulder beam 131 and is used to limit the bridge-building machine 3 placed on the first shoulder beam 131.

[0061] In this embodiment, the reinforcing rod 134 serves to strengthen and support the first side support column 132 and the second side support column 133, so that the bearing capacity and stability of the first side support column 132 and the second side support column 133 are enhanced, making the first bridge erection machine carrier 100 more stable and safe when working. The limit stopper 135 is arranged on the first shoulder pole beam 131, which not only serves to position the bridge erection machine 3, but also serves to prevent the bridge erection machine 3 from sliding on the first shoulder pole beam 131 during the turning process, thereby reducing the occurrence of safety accidents.

[0062] like Figure 3As shown, the fixing portion 110 also includes an adjustment column 113, and the adjustment column 113 includes an adjustment column 113-1, a support height adjustment device 113-2 and a support base plate 113-3. The top of the adjustment column 113-1 is fixedly connected to the bottom of the base 111, and the support base plate 113-3 is arranged below the adjustment column 113-1. The support height adjustment device 113-2 is arranged between the adjustment column 113-1 and the support base plate 113-3 and the adjustment column 113-1 forms a support for the base 111 by adjusting the distance from the bottom of the adjustment column 113-1 to the support base plate 113-3. There are multiple adjustment columns 113, and the multiple adjustment columns 113 are evenly arranged below the base 111.

[0063] In this embodiment, the plurality of adjustment pillars 113 are located on the same circumference below the base 111. The support height adjustment device 113-2 is a set of screw nut pairs, the upper end of the screw is inserted into the adjustment column 113-1, the lower end of the screw is connected to the support base plate 113-3, the nut is sleeved on the screw and located below the adjustment column 113-1, the upper end of the nut is pressed against the lower end of the adjustment column 113-1, and the distance between the bottom of the adjustment column 113-1 and the support base plate 113-3 can be adjusted by adjusting the position of the nut on the screw.

[0064] like Figure 4 As shown, the second bridge-building machine carrier 200 includes a fixed tower 210, a second shoulder pole beam 220 and a shoulder pole beam support column 230. The second shoulder pole beam 220 is horizontally arranged and located above the fixed tower 210. The top of the fixed tower 210 is fixedly connected to the lower surface of the middle part of the second shoulder pole beam 220. There are two shoulder pole beam support columns 230. The two shoulder pole beam support columns 230 are respectively arranged below the left and right ends of the second shoulder pole beam 220 and are used to support the left and right ends of the second shoulder pole beam 220. The bottom of the fixed tower 210 is fixedly installed on the second carrier 2. The two shoulder pole beam support columns 230 are both vertically arranged and fixedly connected to the second carrier 2.

[0065] like Figure 4As shown, the in-situ head turning device of the bridge erecting machine also includes a distance measuring mechanism, which includes a first fixed pulley 301, a second fixed pulley 302, a third fixed pulley 303, a weight 304, a pull line 305 and a scale mark 306. The first fixed pulley 301 is installed on the side wall of the middle part of the second shoulder beam 220 and the first fixed pulley 301 is perpendicular to its installation surface. The second fixed pulley 302 is installed on the second carrier 2 and the second fixed pulley 302 and the first fixed pulley 301 are arranged perpendicular to each other. The third fixed pulley 303 and the first fixed pulley 304 are arranged perpendicular to each other. The fixed pulley 301 is installed on the same side of the second shoulder pole beam 220, and the third fixed pulley 303 is located on one side of the second shoulder pole beam 220. One end of the pull wire 305 is fixed on the rotating part 130, and the other end of the pull wire 305 passes through the first fixed pulley 301, the second fixed pulley 302 and the third fixed pulley 303 in sequence and is fixedly connected with the weight block 304. The weight block 304 is suspended below the third fixed pulley 303, and the scale mark 306 is arranged in the vertical direction on the second bridge erection machine frame 200 near the weight block 304.

[0066] In this embodiment, the scale mark 306 of the distance measuring mechanism is set on the shoulder beam support column 230. During the rotation of the bridge-building machine 3, the first carrier 1 and the first bridge-building machine frame 100 are fixed in place, and the second carrier 2 carries the second bridge-building machine frame 200 and the bridge-building machine 3 thereon to make a circular motion around the first carrier 1. The distance between the first carrier 1 and the second carrier 2 is a fixed value due to the limitation of the bridge-building machine 3. If the distance between the first carrier 1 and the second carrier 2 increases or decreases during the rotation, it will affect the stability of the rotation, which may easily cause a safety accident. After the distance measuring mechanism is installed, when the distance between the first carrier 1 and the second carrier 2 increases, the first carrier 1 pulls the wire 305, and the wire 305 passes through the first fixed pulley 301, the second fixed pulley 302 and the third fixed pulley 303 to pull the weight 304 upward. The operator on the second carrier 2 can timely find the change of the distance between the first carrier 1 and the second carrier 2 through the scale mark 306, and make timely adjustments to prevent the occurrence of safety accidents. On the contrary, when the distance between the first carrier 1 and the second carrier 2 decreases, the weight 304 moves downward.

[0067] In this embodiment, the pulling wire 305 is a thin steel wire rope, and the first carrier 1 and the second carrier 2 are both tire-type beam transport vehicles.

[0068] like Figure 1 and Figure 2 As shown, the present invention also discloses a method for turning the whole bridge erecting machine in situ, characterized in that the turning method comprises:

[0069] Step 1: Select a site for the bridge erection machine to turn around, and plan the site where the first carrier 1 is set and the site where the second carrier 2 travels, roll and level the above sites, and mark the sideline of the second carrier 2's travel path in the site where the second carrier 2 travels;

[0070] Step 2: transport the bridge erecting machine 3 to the designated location;

[0071] Step 3: assemble the in-situ head rotation device of the whole bridge erecting machine on site;

[0072] Step 4: Support and level the annular track 112 by adjusting the support pillars 113;

[0073] Step 5: Drive the second carrier 2, rotate the vehicle body to be perpendicular to the arm of the bridge erecting machine 3, and then enter under the double arms of the bridge erecting machine 3 and align them;

[0074] Step 6: The bridge erecting machine 3 retracts the legs and lowers the arms of the bridge erecting machine 3 so that the arms of the bridge erecting machine 3 are placed on the first shoulder pole beam 131 and the second shoulder pole beam 220, and the legs of the bridge erecting machine 3 are vacated;

[0075] Step 7: Drive the second carrier 2, mark the edge of the second carrier 2's path along the site, and slowly move forward at a speed of v≤0.5km / h. During the moving process, pay attention to the relative position change between the weight 304 and the scale mark 306 in the distance measuring mechanism at any time, and adjust the direction in time;

[0076] Step 8: After the second carrier vehicle 2 reaches the end of its semicircular travel path, the bridge erecting machine 3 stands on each leg, and the bridge erecting machine 3 lifts both arms of the bridge erecting machine 3 away from the first shoulder pole beam 131 and the second shoulder pole beam 220;

[0077] Step nine, release the support of the adjustment pillar 113 of the first carrier 1, drive the first carrier 1 carrying the first bridge-building machine frame 100 and the second carrier 2 carrying the second bridge-building machine frame 200 to leave the site, and complete the whole machine rotation of the bridge-building machine 3.

[0078] The present invention uses two beam transport vehicles to carry the double arms of the bridge erecting machine 3 and all its auxiliary mechanisms at the shortest distance to form a complete machine. One of the beam transport vehicles is fixed, and its shoulder beam is designed with a protective side support, and the bearing trolley at its lower part can be rolled along the circular track for protection during the turning process; the body of the other beam transport vehicle rotates 90°, and its shoulder beam is also equipped with a protective support and a distance measuring mechanism. After the beam transport vehicle walks half a circle along the marking line on the ground, the bridge erecting machine 3 carried on it rotates 180°, and the turning of the whole machine is completed.

[0079] The turning device has the characteristics of small footprint, flexible steering, comprehensive safety protection, simple operation and high steering efficiency. During the construction of the new single-line seamless line, two in-situ turns were carried out, which took 1 hour and 25 minutes and 56 minutes respectively, and the whole machine was turned safely and smoothly, greatly shortening the turning time.

[0080] The above is only a preferred embodiment of the invention and does not limit the invention in any way. Any simple modification, change and equivalent structural transformation made to the above embodiments based on the technical essence of the invention still falls within the protection scope of the technical solution of the invention.

Claims

1. A bridge erection machine in-situ head turning device, characterized in that: include: A first carrier (1), a second carrier (2), a first bridge-building machine carrier (100) and a second bridge-building machine carrier (200), wherein the first bridge-building machine carrier (100) comprises a fixed portion (110), a connecting portion (120) and a rotating portion (130), wherein the rotating portion (130) is arranged above the fixed portion (110) and can rotate relative to the fixed portion (110), wherein the connecting portion (120) is arranged between the fixed portion (110) and the rotating portion (130) and is used to support and rotatably connect the rotating portion (130) above the fixed portion (110), and wherein the lower end of the connecting portion (120) is connected to the fixed portion (110). The fixing part (110) is fixedly connected, the upper end of the connecting part (120) is fixedly connected to the rotating part (130) and the rotating part (130) can rotate relative to the fixing part (110) around the central axis of the connecting part (120), the fixing part (110) is fixedly arranged on the first carrier (1), the second bridge-building machine carrier (200) is installed on the second carrier (2) and is used to carry one end of the bridge-building machine (3), so that the bridge-building machine (3) rotates around the central axis of the connecting part (120) under the support of the first bridge-building machine carrier (100) and the carrying of the second bridge-building machine carrier (200), The rotating part (130) comprises a first shoulder beam (131), a first side support column (132) and a second side support column (133); the rotating part (130) further comprises a reinforcing pull rod (134) and a limit stopper (135); The fixing portion (110) comprises a base (111) and an annular track (112), wherein the annular track (112) is fixedly mounted on the upper surface of the base (111), and the base (111) is fixedly connected to the first carrier vehicle (1) and is used to support the annular track (112); The connecting portion (120) comprises a tower base (121) and a rotating connecting head (122), wherein the rotating connecting head (122) is installed on the upper part of the tower base (121) and can rotate around the central axis of the connecting portion (120), and the bottom of the tower base (121) is fixed on the first carrier (1); The upper end of the first side support column (132) is fixedly connected to the lower part of one end of the first shoulder pole beam (131), and the lower end of the first side support column (132) is in rolling contact with the circular track (112); the upper end of the second side support column (133) is fixedly connected to the lower part of the other end of the first shoulder pole beam (131), and the lower end of the second side support column (133) is in rolling contact with the circular track (112); The first side support column (132) and the second side support column (133) have the same structure and both include a support column (132-1) and a load-bearing trolley (132-2); the upper end of the support column (132-1) is fixedly connected to the lower part of one end of the first shoulder beam (131); the lower end of the support column (132-1) is fixedly connected to the upper end of the load-bearing trolley (132-2); the running wheels of the load-bearing trolley (132-2) are in contact with the annular track (112) and the running wheels cooperate with the track surface of the annular track (112) to be able to roll back and forth along the annular track (112); the support column (132-1) is composed of a plurality of short columns with the same structure and the same or different lengths that are detachably spliced; One end of the reinforcing rod (134) is hinged to the bottom of the first shoulder beam (131), and the other end of the reinforcing rod (134) is hinged to the support (132-1); the limit stopper (135) is fixedly arranged on the upper surface of the first shoulder beam (131) and is used to limit the bridge erection machine (3) placed on the first shoulder beam (131); The fixing portion (110) further comprises an adjustment column (113), wherein the adjustment column (113) comprises an adjustment column (113-1), a support height adjustment device (113-2) and a support base plate (113-3); the top of the adjustment column (113-1) is fixedly connected to the bottom of the base (111); the support base plate (113-3) is arranged below the adjustment column (113-1); the support height adjustment device (113-2) is arranged between the adjustment column (113-1) and the support base plate (113-3) and enables the adjustment column (113-1) to form a support for the base (111) by adjusting the distance between the bottom of the adjustment column (113-1) and the support base plate (113-3); the number of the adjustment columns (113) is multiple, and the multiple adjustment columns (113) are evenly arranged below the base (111); The second bridge-building machine carrier (200) comprises a fixed tower (210), a second shoulder pole beam (220) and a shoulder pole beam support column (230); the second shoulder pole beam (220) is horizontally arranged and located above the fixed tower (210); the top of the fixed tower (210) is fixedly connected to the lower surface of the middle part of the second shoulder pole beam (220); there are two shoulder pole beam support columns (230); the two shoulder pole beam support columns (230) are respectively arranged below the left and right ends of the second shoulder pole beam (220) and are used to support the left and right ends of the second shoulder pole beam (220); the bottom of the fixed tower (210) is fixedly installed on the second carrier (2); the two shoulder pole beam support columns (230) are both vertically arranged and both are fixedly connected to the second carrier (2); The whole-machine in-situ head-turning device for the bridge erection machine also includes a distance measuring mechanism, which includes a first fixed pulley (301), a second fixed pulley (302), a third fixed pulley (303), a weight (304), a pull line (305) and a scale mark (306), wherein the first fixed pulley (301) is mounted on the side wall of the middle part of the second shoulder beam (220) and the first fixed pulley (301) is perpendicular to the mounting surface of the first fixed pulley (301), the second fixed pulley (302) is mounted on the second carrier (2), and the second fixed pulley (302) and the first fixed pulley (301) are arranged perpendicular to each other, and the third fixed pulley (303) and the first fixed pulley (301) are arranged perpendicular to each other. 1) is installed on the same side of the second shoulder pole beam (220), the third fixed pulley (303) is located on one side of the second shoulder pole beam (220), one end of the pull wire (305) is fixed on the rotating part (130) of the first bridge erection machine carrier (100), the other end of the pull wire (305) passes through the first fixed pulley (301), the second fixed pulley (302) and the third fixed pulley (303) in sequence, and is fixedly connected to the weight block (304) and can suspend the weight block (304) below the third fixed pulley (303), and the scale mark (306) is arranged on the second bridge erection machine carrier (200) in the vertical direction near the weight block (304).

2. A method for rotating the whole bridge erecting machine in situ by using the whole bridge erecting machine in situ rotating device as claimed in claim 1, characterized in that: The head turning method comprises: Step 1: Select a site for the bridge erection machine (3) to turn around, and plan the site for the first carrier vehicle (1) to be set up and the site for the second carrier vehicle (2) to travel, roll and level the above sites, and mark the edge of the second carrier vehicle (2)'s travel path in the site for the second carrier vehicle (2); Step 2: transport the bridge erecting machine (3) to the designated location; Step 3: assemble the in-situ head rotation device of the whole bridge erecting machine on site; Step 4: Support and level the annular track (112) by adjusting the adjustment support (113); Step 5, drive the second carrier vehicle (2), rotate the vehicle body to be perpendicular to the arm of the bridge erecting machine (3), enter under the arms of the bridge erecting machine (3) and align; Step 6: The bridge erecting machine (3) retracts each leg and lowers both arms of the bridge erecting machine (3) so that one end of both arms of the bridge erecting machine (3) is landed on the first shoulder pole beam (131) and the other end is landed on the second shoulder pole beam (220), and the legs of the bridge erecting machine (3) are vacated; Step 7: Drive the second carrier (2), mark the edge of the second carrier (2) path along the site, and slowly move forward at a speed less than or equal to 0.5 km / h. During the moving process, pay attention to the relative position change between the weight (304) and the scale mark (306) in the distance measuring mechanism at any time, and adjust the direction in time; Step 8: After the second carrier (2) arrives at the end of the semicircular travel path of the second carrier (2), the bridge erecting machine (3) supports each leg, and the bridge erecting machine (3) lifts both arms of the bridge erecting machine (3) away from the first shoulder pole beam (131) and the second shoulder pole beam (220); Step nine, release the support of the adjustment support (113) of the first carrier vehicle (1), drive the first carrier vehicle (1) carrying the first bridge-building machine frame (100), and the second carrier vehicle (2) carrying the second bridge-building machine frame (200) to leave the site, and complete the rotation of the entire bridge-building machine (3).

Images