Track supporting device of bridge girder erection machine

Abstract

The invention relates to the technical field of bridge girder erection machine auxiliary devices, in particular to a bridge girder erection machine rail supporting device which comprises a plurality of installation cylinders arranged on a front supporting leg rail, and each installation cylinder is provided with a supporting assembly used for supporting the front supporting leg rail. The supporting assembly comprises a first supporting plate fixed to the mounting cylinder, a supporting cylinder slidably connected to the mounting cylinder and a second supporting plate fixed to the supporting cylinder, the first supporting plate is used for abutting against the lower surface of the front supporting leg rail, and a rotating shaft is fixedly installed on the first supporting plate; a mounting assembly is arranged on the rotating shaft, the rotating shaft is fixed to the front supporting leg track through the mounting assembly, the first supporting plate is rotationally connected to the front supporting leg track, and a fixing assembly used for fixing the position of the supporting cylinder is arranged on the mounting cylinder. The device has the effect of conveniently supporting the front supporting leg rail.

Description

Technical Field

[0001] The present application relates to the technical field of auxiliary devices for bridge erection machines, and in particular to a track support device for bridge erection machines. Background Art

[0002] The rail supports for the front legs of bridge erection machines are usually made of multi-layer sleepers, which are mainly 20cmx20cm square miscellaneous wood. In order to ensure the levelness of the rails during the beam erection process, since the two ends of the bottom of the rails are placed above the blocks, the sleepers not only need to be designed with horizontal slopes for leveling, but also need to be responsible for leveling the height difference between the top surface of the beam and the top surface of the block, resulting in the highest point leveling height far exceeding the thickness of 3 layers of sleepers. Multi-layer sleepers lead to poor stability of the structure itself, and the number of sleepers to be moved is large, and the work intensity is high. In order to reduce the number of sleepers used, the existing technology usually supports the front leg rails by combining sleepers and support columns.

[0003] For example, the Chinese patent document with the publication number CN111691307B discloses a support and limiting device and installation method for the front legs of a bridge-building machine, including a front leg, a plurality of supporting steel barrels are provided on the front leg, a fixed pull rod is provided between the plurality of supporting steel barrels, a cap beam is provided at the lower part of the supporting steel barrel, blocks are provided at both ends of the cap beam, a longitudinal limiting device is provided between the front leg and the cap beam, and a transverse limiting device is provided between the front leg and the block; the supporting steel barrel is also provided with a lifting hole; the front leg is also provided with a hook to lift the supporting steel barrel for transportation and movement. When the front support leg track moves to above the cap beam, the front support leg drops down, and at the same time the staff removes the hanging support steel barrel from the front support leg, and then places the support steel barrel on the cap beam. Due to the different heights of the upper surface of the cap beam, the upper surfaces of the multiple support tubes placed on the cap beam are not in the same plane. At this time, it is also necessary to level the upper surface of the support steel barrel with sleepers, and then the front support leg track continues to move downward so that the lowered front support leg track abuts against the sleepers on the support steel barrel, and at the same time, the two ends of the front support leg track abut against the block, and finally the front support leg track that falls on the block is fixed by the staff.

[0004] In the above-mentioned related technologies, when supporting the front legs of the bridge-building machine, the staff first needs to remove the multiple supporting steel barrels hanging from the front leg tracks in turn, and then place the supporting steel barrels in the designated positions in turn. After the supporting steel barrels are placed, the staff is also required to level the upper surfaces of the multiple supporting steel barrels by placing sleepers on the upper surfaces of the supporting steel barrels. Only after the leveling is completed can the front leg tracks be abutted against the leveled sleepers. In the process of supporting the front leg tracks in the above-mentioned manner, the installation steps are cumbersome, resulting in a decrease in work efficiency in the process of supporting the front leg tracks, and at the same time, the work intensity of the staff is increased. Summary of the Invention

[0005] The present application provides a bridge erection machine track support device, which aims to solve the problem in the related art that it is inconvenient to support the front leg track.

[0006] The present application provides a bridge erection machine track support device that adopts the following technical solution: The lifting mechanism is a bottom end of a lifting mechanism, and the lifting mechanism is a bottom end of a lifting mechanism, and the lifting mechanism is a bottom end of a lifting mechanism, and the lifting mechanism is a bottom end of a lifting mechanism.

[0007] By adopting the above technical solution, in the initial state, the pushing assembly pushes the first support plate to rotate to a position misaligned with the front leg track, and at this time, the mounting tube on the first support plate is set upward. Since the support tube is slidably connected to the mounting tube, when the mounting tube is facing upward, the support tube is completely sleeved on the mounting tube, so that the extended length of the mounting tube is the shortest, thereby preventing the support tube from being too long and colliding with the bridge when the front leg track moves; when the front leg track moves to above the cap beam, the pushing assembly no longer supports the first support plate, and then the first support plate and the mounting tube set on the first support plate and the support tube rotate downward under the action of gravity. At this time, the mounting tube is set downward. In addition, under the action of gravity, the support tube is at the lowest end of the mounting tube. In the process of the front leg track moving downward, the second support tube on the support tube The support plate first contacts the highest position of the upper surface of the cap beam, and then the installation tube gradually moves into the support tube until all the second support plates are in contact with the upper surface of the cap beam, and the two ends of the front support leg track are in contact with the block. At this time, the position of the support tube on the installation tube is fixed, and then the position of the support tube is fixed by the fixing assembly, so that the support of the front support leg track can be achieved. In the process of supporting the front support leg track, there is no need to manually remove the support device and then perform leveling with sleepers, which makes it more convenient to install the support device and also increases the speed of installing the support device.

[0008] Optionally, the fixing assembly includes a first fixing ring sleeved on the mounting tube and a second fixing ring fixed on the support tube, the first fixing ring is threadedly connected to the mounting tube, and when the first fixing ring abuts against the second fixing ring, the support tube cannot move toward the direction close to the first support plate.

[0009] By adopting the above technical solution, when the two ends of the front support leg track abut against the block, the second support plate abuts against the upper surface of the cap beam. At this time, the first fixing ring is rotated so that the first fixing ring abuts against the upper surface of the second fixing ring. The position of the support tube can be limited, the support tube cannot move toward the direction close to the first support plate, and the installation tube cannot continue to extend into the support tube, which can make the front support leg track support effect better.

[0010] Optionally, the pushing assembly includes a pushing shaft rotatably connected to the front support leg track and a pushing frame fixed on the pushing shaft, the pushing frame abuts against the surface of the first support plate, and when the first support plate and the front support leg track are staggered, the pushing frame supports the first support plate when it rotates out of the front support leg track, and a driving assembly for driving the pushing shaft to rotate is provided on the front support leg track.

[0011] By adopting the above technical solution, in the initial state, the first support plate and the front leg rail are staggered, the mounting tube is set upward, and the pushing frame is under the first support plate and abuts against the surface of the first support plate to support the first support plate. Then, when it is necessary to support the front leg rail, the pushing shaft is rotated, and the pushing shaft drives the pushing frame to rotate. At this time, the first support plate and the mounting tube will rotate to the bottom of the front leg rail under the action of gravity. Finally, the first support plate is completely abutted against the lower surface of the front leg rail, and the mounting tube is completely extended out of the supporting tube, so that the second support plate and the upper surface of the cap beam can be abutted.

[0012] Optionally, the drive assembly includes a worm wheel fixed on the driving shaft and a worm screw rotatably connected to the front leg track, the worm screw and the worm wheel are engaged, and the driving shaft is fixed by the engaged worm wheel and worm screw.

[0013] By adopting the above technical solution, since the lead angle of the worm is smaller than the equivalent friction angle between the meshing gear teeth, the worm can only drive the worm wheel, and the worm wheel cannot drive the worm to rotate. At this time, the position of the driving shaft can be fixed.

[0014] Optionally, a reinforcement assembly for reinforcing the first fixing ring and the second fixing ring is provided on the first support plate, and the reinforcement assembly includes a reinforcement sleeve fixed on the first support plate, a reinforcement screw passed through the first fixing ring and the second fixing ring, and a reinforcement nut fixed on the reinforcement screw, the reinforcement screw passed through the reinforcement sleeve and threadedly connected to the reinforcement sleeve, when the reinforcement screw and the reinforcement sleeve are threadedly connected, the reinforcement nut abuts against the side of the second fixing ring facing away from the first fixing ring.

[0015] By adopting the above technical solution, when fixing the first fixing ring and the second fixing ring, the reinforcing screw is passed through the first fixing ring and the second fixing ring, and the reinforcing screw and the reinforcing sleeve are threadedly connected. Due to the different heights of the upper surfaces of the cap beam, the protruding lengths of the mounting tube on the support tube are also different. When the reinforcing nut abuts against the side of the second fixing ring away from the first fixing ring, the lengths of the reinforcing screw extending into the reinforcing sleeve are also different. The second fixing ring can be pushed against the lower surface of the first fixing ring through the reinforcing nut. In addition, since the reinforcing screw is in the reinforcing sleeve, the support tube can be prevented from moving in a direction away from the first fixing ring.

[0016] Optionally, a reinforcing nut is provided on the reinforcing screw, the reinforcing nut is threadedly connected to the reinforcing screw, and the reinforcing nut is used to abut against a side of the first fixing ring away from the second fixing ring.

[0017] By adopting the above technical solution, when the reinforcing screw is passed through the first fixing ring and the second fixing ring, the reinforcing nut is passed through the reinforcing screw, and then when the reinforcing nut abuts against the side of the first fixing ring away from the second fixing ring, the reinforcing nut is rotated so that the reinforcing nut abuts against the side of the first fixing ring away from the second fixing ring, and the first fixing ring and the second fixing ring are fixed together by the reinforcing nut and the reinforcing nut, so that the fixing effect of the support tube on the mounting tube is better.

[0018] Optionally, the mounting assembly includes a mounting bracket fixed on the rotating shaft and a mounting bolt passing through the mounting bracket, and the mounting bolt is threadedly connected to the front leg rail.

[0019] By adopting the above technical solution, under the action of the mounting frame and the mounting bolts, it is convenient to install the support tube and the mounting tube on the front leg track, and it is also convenient to remove the mounting tube from the front leg track.

[0020] Optionally, a locking assembly is provided on the first support plate, and the locking assembly is used to fix the first support plate to the front support leg rail. The locking assembly includes a locking plate slidably connected to the first support plate and a locking spring fixed to the locking plate, and one end of the locking spring away from the locking plate is fixed to the first support plate, and the locking spring is used to pull the locking plate to move in a direction away from the rotating shaft, and the reinforcing sleeve is provided with a control assembly for pushing the locking plate to move in a direction close to the rotating shaft. When the first support plate abuts the lower surface of the front support leg rail, the control assembly pushes the locking plate to move so that the locking plate abuts the front support leg rail.

[0021] By adopting the above technical solution, after the first fixing ring and the second fixing ring are fixed, the locking plate is driven by the control component to move toward the direction close to the rotation axis. During the movement, the locking plate will extend out of the first support plate and then abut against the front support leg track. At this time, the first support plate cannot rotate, thereby improving the stability of the first support plate.

[0022] Optionally, the control assembly includes a control rod slidably connected to the first support plate and a control ring fixed on the control rod, the control ring is arranged in a reinforcement sleeve, and the control rod is provided with a control surface for abutting the side of the locking plate, and the control surface is inclined. When the reinforcement screw is threadedly connected in the reinforcement sleeve, it pushes the control ring to move upward, and the control rod pushes the locking plate to move toward the direction close to the rotation axis.

[0023] By adopting the above technical solution, when the reinforcing screw moves in the reinforcing sleeve, the end of the reinforcing screw will push the control ring to move upward, the control ring will drive the control rod to move, and then the control surface will abut against the locking plate. Since the control surface is inclined, the locking plate can be pushed to move in the direction close to the rotating axis, and finally abut against the front support leg track. When the reinforcing screw is removed, the reinforcing screw and the reinforcing sleeve are separated, and then the control rod and the control ring fall under the action of gravity, and the locking spring drives the locking plate to move in the opposite direction, thereby facilitating the pushing component to push the first support plate to rotate and reset.

[0024] Optionally, a fixing rod is slidably connected to the worm, and a fixing groove for inserting the fixing rod is opened on the front leg track. When the fixing rod is in the fixing groove, the position of the worm is fixed.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. When both ends of the front support leg track abut against the stop block, the second support plate abuts against the upper surface of the cap beam. At this time, rotate the first fixing ring so that the first fixing ring abuts against the upper surface of the second fixing ring to limit the position of the support tube.

[0026] 2. The reinforcing screw is passed through the first fixing ring and the second fixing ring, and the reinforcing screw and the reinforcing sleeve are threadedly connected. The reinforcing nut abuts against the side of the second fixing ring away from the first fixing ring, which can prevent the support tube from moving away from the first fixing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an embodiment of the present application in which the second support plate abuts against the upper surface of the cap beam.

[0028] Figure 2 It is a structural schematic diagram of an embodiment of the present application in which the first support plate is fixed to the front leg track.

[0029] Figure 3It is a schematic diagram of the reinforcement component structure of an embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the structure of the pushing component of an embodiment of the present application.

[0031] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0032] Figure 6 It is a structural schematic diagram of the staggered arrangement of the first support plate and the front leg track in an embodiment of the present application.

[0033] Figure 7 It is a schematic diagram of the drive component structure of an embodiment of the present application.

[0034] : Illustrations: 01, first horizontal plate; 02, second horizontal plate; 03, connecting plate; 04, cap beam; 05, stopper; 1, mounting tube; 11, rotating shaft; 2, support assembly; 21, first support plate; 22, support tube; 23, second support plate; 3, mounting assembly; 31, mounting frame; 32, mounting bolt; 4, fixing assembly; 41, first fixing ring; 42, second fixing ring; 5, reinforcement assembly; 51, reinforcement sleeve; 52, reinforcement screw; 53, reinforcement nut; 54, reinforcement nut; 6, pushing assembly; 61, pushing shaft; 62, pushing frame; 7, driving assembly; 71, worm; 72, worm gear; 73, fixing rod; 74, fixing groove; 8, locking assembly; 81, locking plate; 82, locking spring; 9, control assembly; 91, control rod; 92, control ring; 93, control surface. DETAILED DESCRIPTION

[0035] The following combination Figure 1-Figure 7 This application is described in further detail.

[0036] The embodiment of the present application discloses a bridge erection machine track support device. Figures 1 to 2 A bridge crane track support device includes a plurality of mounting cylinders 1 arranged on the front leg track, the front leg track includes a first horizontal plate 01, a second horizontal plate 02 and a connecting plate 03, the connecting plate 03 is used to connect the first horizontal plate 01 and the second horizontal plate 02, and make the cross section of the front leg track present an I-shaped structure; each mounting cylinder 1 is provided with a support assembly 2, and a mounting assembly 3 is provided on the second horizontal plate 02, and a rotating shaft 11 is rotatably connected to the mounting assembly 3, so that the mounting cylinder 1 and the supporting assembly 2 are both rotatably connected to the front leg track; combined with Figure 6When there is no need to support the front leg track, the support assembly 2 can be rotated so that the support assembly 2 and the front leg track are staggered. At this time, the support assembly 2 is on the side of the front leg track. When the front leg track needs to be supported, the support assembly 2 is rotated to the bottom of the front leg track. At the same time, a fixing assembly 4 for fixing the support assembly 2 on the mounting tube 1 is provided on the mounting tube 1.

[0037] Reference Figures 2 to 4 The mounting assembly 3 includes a mounting frame 31 and a mounting bolt 32. The mounting bolt 32 is passed through the mounting frame 31 and is threadedly connected to the front leg rail. The mounting frame 31 is then fixed to the front leg rail. The rotating shaft 11 is passed through the mounting frame 31. Multiple mounting assemblies 3 and rotating shafts 11 are provided, and multiple mounting assemblies 3 and rotating shafts 11 correspond one to one to multiple mounting tubes 1.

[0038] Reference Figures 2 to 4 The support assembly 2 includes a first support plate 21 fixed on the mounting cylinder 1, a support cylinder 22 slidably connected to the mounting cylinder 1, and a second support plate 23 fixed on the support cylinder 22. The cross-section of the first support plate 21 is larger than the cross-section of the mounting cylinder 1, and the cross-section of the second support plate 23 is larger than the cross-section of the support cylinder 22. The first support plate 21 is fixedly mounted on the rotating shaft 11. Through the setting of the rotating shaft 11, the first support plate 21 can be fully rotated to the bottom of the front support leg rail and abut against the lower surface of the front support leg rail. At this time, the mounting cylinder 1 is set downward, and then the front support leg rail can be supported by the support cylinder 22 and the second support plate 23 on the mounting cylinder 1; a limit block (not shown in the figure) is fixedly installed on the inner wall of the support cylinder 22, and a limit groove for the limit block to slide is opened on the outer wall of the mounting cylinder 1. The limit groove is opened along the axial direction of the mounting cylinder 1, so that the support cylinder 22 can only slide on the mounting cylinder 1.

[0039] Reference Figures 2 to 4 as well as Figure 6 When the front leg track is not needed to be supported, the first support plate 21 is driven to rotate 180 degrees by rotating the rotating shaft 11. At this time, the first support plate 21 and the front leg track are staggered, and then the mounting tube 1 on the first support plate 21 is set upward. At this time, the height of the front leg track can be reduced. During the movement of the front leg track, the extended support tube 22 can be prevented from colliding with other cap beams 04, making the front leg track more stable during movement.

[0040] Since the support tube 22 is slidably connected to the mounting tube 1, when the first support plate 21 and the front leg rail are misaligned, the mounting tube 1 is set upward, and then the support tube 22 mounted on the mounting tube 1 will be completely mounted on the mounting tube 1 under the action of gravity, and then the length of the mounting tube 1 extending out of the support tube 22 is the shortest. When the front leg rail needs to be supported, the first support plate 21 rotates to the bottom of the front leg rail. At this time, the mounting tube 1 is set downward, and the support tube 22 on the mounting tube 1 automatically falls under the action of gravity, and the length of the mounting tube 1 extending out of the support tube 22 is the longest.

[0041] Reference Figures 1 to 4 As the front leg track continues to move downward, the second support plate 23 on the support tube 22 first contacts the highest position on the upper surface of the cap beam 04; as the front leg track moves downward, the support tube 22 that first contacts the cap beam 04 will slide on the mounting tube 1, and the second support plates 23 at the remaining positions will successively abut against the upper surface of the cap beam 04. Since the height of the upper surface of the cap beam 04 is different, the length of the mounting tube 1 extending out of the support tube 22 is also different at this time. The highest position on the upper surface of the cap beam 04, the longer the mounting tube 1 extends into the support tube 22, when both ends of the front leg track abut against the stop block 05, the support tube 22 is fixed to the mounting tube 1 through the fixing assembly 4, thereby achieving support for different positions of the front leg track.

[0042] Reference Figures 2 to 4 The fixing assembly 4 includes a first fixing ring 41 threadedly connected to the mounting tube 1 and a second fixing ring 42 fixed to the support tube 22. The second fixing ring 42 and the second support plate 23 are arranged at both ends of the support tube 22, and a thread is provided on the outer surface of the mounting tube 1 to facilitate the threaded connection of the first fixing ring 41 and the mounting tube 1. When both ends of the front support leg rail abut against the stop block 05, the first fixing ring 41 is rotated in the direction close to the second fixing ring 42, and then the first fixing ring 41 abuts against the upper surface of the second fixing ring 42. At this time, the support tube 22 cannot move in the direction close to the first support plate 21, thereby achieving the purpose of limiting and fixing the position of the support tube 22.

[0043] Reference Figures 2 to 4 A reinforcement component 5 is provided on the first fixing ring 41 and the second fixing ring 42. The reinforcement component 5 is used to fix the positions of the first fixing ring 41 and the second fixing ring 42. After the first fixing ring 41 and the second fixing ring 42 are fixed, the second fixing ring 42 and the support tube 22 cannot move away from the first support plate 21. At this time, the fixing strength of the support tube 22 on the mounting tube 1 can be improved.

[0044] Reference Figures 2 to 4The reinforcement assembly 5 includes a reinforcement sleeve 51 fixed on the first support plate 21, a reinforcement screw 52 passed through the first fixing ring 41 and the second fixing ring 42, and a reinforcement nut 53 fixed on the reinforcement screw 52. The reinforcement screw 52 passes through the reinforcement sleeve 51 and is threadedly connected to the reinforcement sleeve 51. The reinforcement screw 52 is slidably connected to the first fixing ring 41 and the second fixing ring 42. When the first fixing ring 41 and the second fixing ring 42 are not needed to be fixed, they can be directly removed from the first fixing ring 41 and the second fixing ring 42. When the first fixing ring 41 and the second fixing ring 42 need to be fixed, When the second fixing ring 42 is installed, the reinforcing screw 52 is passed through the first fixing ring 41 and the second fixing ring 42, and the reinforcing screw 52 and the reinforcing sleeve 51 are threadedly connected. In this embodiment, the reinforcing screw 52 is installed from the bottom to the top, and then the reinforcing nut 53 is abutted against the side of the second fixing ring 42 away from the first fixing ring 41, and then the second fixing ring 42 can be pushed to abut against the first fixing ring 41. Due to the setting of the reinforcing nut 53, the position of the second fixing ring 42 can be limited, so that the second fixing ring 42 cannot move in the direction away from the first fixing ring 41.

[0045] Reference Figures 2 to 4 A reinforcing nut 54 is passed through the reinforcing screw 52, ​​and the reinforcing nut 54 is threadedly connected to the reinforcing screw 52. When the reinforcing screw 52 is passed through the first fixing ring 41 and the second fixing ring 42 from below, the reinforcing nut 54 is passed through the reinforcing screw 52, ​​and the reinforcing nut 53 is rotated to thread the reinforcing screw 52 and the reinforcing sleeve 51. Finally, the reinforcing nut 54 is rotated to make the reinforcing nut 54 abut against the side of the first fixing ring 41 away from the second fixing ring 42. The first fixing ring 41 and the second fixing ring 42 are clamped and fixed by the reinforcing nut 54 and the reinforcing nut 53. At the same time, since the reinforcing screw 52 and the reinforcing sleeve 51 are threadedly connected, the first fixing ring 41 can be made more stable on the reinforcing sleeve 51.

[0046] Reference Figures 2 to 4 as well as Figure 6 A pushing assembly 6 is provided on the front leg track, and the pushing assembly 6 is used to push the first support plate 21 below the front leg track to rotate 180 degrees around the rotation axis 11, and at the same time can also support the first support plate 21 that is misaligned with the front leg track, and then the retracted support device can be limited.

[0047] Reference Figures 2 to 4 as well as Figure 6The pushing assembly 6 includes a pushing shaft 61 rotatably connected to the front leg track and a pushing frame 62 fixed on the pushing shaft 61. At the same time, a accommodating groove for accommodating the pushing frame 62 is opened on the front leg track. In this embodiment, since multiple mounting tubes 1 and support assemblies 2 are provided, and multiple pushing frames 62 are also provided, multiple pushing frames 62 correspond to multiple mounting tubes 1 one by one, and the rotation of the pushing shaft 61 can drive multiple pushing frames 62 to rotate simultaneously.

[0048] When there is no need to support the front leg rail, the pushing frame 62 rotates out of the accommodating groove and is under the first support plate 21, while abutting against the surface of the first support plate 21. Then the pushing frame 62 can support the first support plate 21. When it is necessary to support the front leg rail, the pushing shaft 61 is rotated, and the pushing shaft 61 drives the pushing frame 62 to rotate. The first support plate 21, the mounting tube 1 and the support tube 22 will rotate downward around the rotating shaft 11 under the action of gravity. Finally, the first support plate 21 abuts against the lower bottom surface of the front leg rail, and the pushing frame 62 is completely in the accommodating groove.

[0049] When the front leg track needs to move, the pushing shaft 61 drives the pushing frame 62 to rotate in the opposite direction. During the rotation process, the pushing frame 62 pushes the first support plate 21 to rotate in the opposite direction. Finally, after the first support plate 21 rotates 180 degrees, the first support plate 21 is reset. At this time, the support tube 22 is completely mounted on the mounting tube 1 under the action of gravity, which facilitates the movement of the front leg track.

[0050] Reference Figures 2 to 7 The worm gear 72 is engaged with the worm gear 71 , and the worm gear 72 and the driving shaft 61 are engaged with each other. The worm gear 72 and the driving shaft 61 are engaged with each other, and the worm gear 71 is engaged with each other ... In addition, a fixing rod 73 is slidably connected to the worm gear 71, and a fixing groove 74 is opened on the side of the front leg track. After the first support plate 21 and the front leg track are staggered, the fixing rod 73 and the fixing groove 74 correspond to each other, and then the staff slides the fixing rod 73 to move the fixing rod 73 into the fixing groove 74, thereby further fixing the position of the worm gear 71. At this time, the pushing frame 62 can better support the first support plate 21.

[0051] Reference Figures 2 to 6The first support plate 21 is provided with a mounting groove, and a locking assembly 8 is provided in the mounting groove. The locking assembly 8 is used to fix the first support plate 21 on the second horizontal plate 02, and the locking assembly 8 and the rotating shaft 11 are arranged on both sides of the first support plate 21. The locking assembly 8 includes a locking plate 81 slidably connected to the first support plate 21 and a locking spring 82 fixed on the locking plate 81. The locking spring 82 is fixed on the inner wall of the mounting groove away from the locking plate 81. The locking spring 82 is used to pull the locking plate 81 into the mounting groove. A control assembly 9 is provided on the first support plate 21. The control assembly 9 is used to push the locking plate 81 to move in the direction close to the rotating shaft 11, and then make the locking plate 81 extend out of the mounting groove, and the locking plate 81 abuts against the upper surface of the second horizontal plate 02. At this time, the position of the first support plate 21 is fixed.

[0052] Reference Figures 2 to 6 The control assembly 9 includes a control rod 91 slidably connected to the first support plate 21 and a control ring 92 fixed to the control rod 91. The control ring 92 is in the reinforcement sleeve 51 and is slidably connected to the reinforcement sleeve 51 along the axis of the reinforcement sleeve 51. The control ring 92 and the control rod 91 are slidably connected to the first support plate 21 along the length direction of the reinforcement sleeve 51. A control surface 93 is provided on the control rod 91. The control surface 93 is tilted. When the reinforcing screw 52 fixes the first fixing ring 41 and the second fixing ring 42, the reinforcing screw 52 is inserted into the reinforcement sleeve. 51, and then abuts on the control ring 92. When the reinforcing screw 52 moves into the reinforcing sleeve 51, the reinforcing screw 52 will push the control ring 92 to move upward, and then the control ring 92 will drive the control rod 91 to move upward, and then the control surface 93 on the control rod 91 abuts against the locking plate 81. Since the control surface 93 is set tilted, the locking plate 81 will be pushed to move in the horizontal direction and in the direction close to the rotating shaft 11, and finally abut on the second horizontal plate 02. The first support plate 21 cannot rotate, thereby fixing the position of the first support plate 21.

[0053] When the front leg track moves, the first support plate 21 needs to be rotated. First, the reinforcing screw 52 rotates in the opposite direction, disengaging the reinforcing sleeve 51. Then, the control rod 91 and the control ring 92 move downward under the action of gravity. The locking plate 81, under the action of the locking spring 82, moves into the installation slot. The locking plate 81 and the upper surface of the second horizontal plate 02 are disengaged, and the first support plate 21 is pushed to the side of the front leg track by the pushing assembly 6. A return spring (not shown) can also be fixed to the control rod 91. The end of the return spring away from the control rod 91 is fixed to the first support plate 21. During the upward movement of the control ring 92, the return spring is compressed. When the reinforcing screw 52 moves in the opposite direction, the return spring pushes the control ring 92 and the control rod 91 downward. Because the length of the installation tube 1 extending into the support tube 22 varies, the length of the reinforcing screw 52 extending into the reinforcing sleeve 51 also varies, resulting in different lengths of the control rod 91 extending out of the first support plate 21.

[0054] The implementation principle of a bridge crane track support device in an embodiment of the present application is as follows: the front leg track of the bridge crane moves to the top of the cap beam 04, and then the front leg track moves downward. After falling to a certain height, the staff disengages the fixing rod 73 and the fixing slot 74, and then rotates the push shaft 61. The push shaft 61 drives the push frame 62 to rotate, and the first support plate 21 will rotate downward. Finally, the mounting tube 1 rotates to a vertical state under the action of gravity, and the first support plate 21 abuts against the lower surface of the front leg track. At this time, the mounting tube 1 is completely extended out of the support tube 22, and the front leg track continues to move downward. The second support plate 23 on the support tube 22 first contacts the highest position on the upper surface of the cap beam 04, until both ends of the front leg track abut on the stop block 05, and all second support plates 23 abut against the surface of the cap beam 04 Since the height of the surface of the cap beam 04 is different, the length of each mounting tube 1 in the support tube 22 is also different. Then, the first fixing ring 41 is moved toward the direction close to the second fixing ring 42, so that the first fixing ring 41 abuts against the second fixing ring 42, and the reinforcing screw 52 passes through the second fixing ring 42 and the first fixing ring 41 from bottom to top, and is threadedly connected to the reinforcing sleeve 51. When the reinforcing screw 52 moves in the reinforcing sleeve 51, the reinforcing screw 52 will push the control ring 92 to move upward, and the control rod 91 also moves upward. The control surface 93 on the control rod 91 will push the locking plate 81 to move toward the direction close to the rotating shaft 11, and then abut against the upper surface of the second horizontal plate 02. The locking spring 82 is in a stretched state. Finally, the second support plate 23 is fixed to the cap beam 04 by bolts.

[0055] When the front leg track needs to be moved, the bolts connecting the second support plate 23 and the cap beam 04 are removed, and the reinforcing screw 52 is removed at the same time, and the first fixing ring 41 is rotated in the opposite direction. The control ring 92 in the reinforcing sleeve 51 will move downward under the action of gravity, and then the control surface 93 on the control rod 91 will no longer abut against the locking plate 81, and the locking plate 81 moves into the installation groove under the action of the locking spring 82, and the driving assembly 7 drives the driving shaft 61 and the pushing frame 62 to rotate, and the pushing frame 62 pushes the first support plate 21 to rotate. After the first support plate 21 rotates 180 degrees, the mounting tube 1 on the first support plate 21 is set upward, and the fixing rod 73 corresponds to the fixing groove 74, pushing the fixing rod 73 to move into the fixing groove 74, fixing the position of the worm 71, and the support tube 22 is completely sleeved on the mounting tube 1 under the action of gravity, thereby facilitating the installation of the front leg track support device. In addition, there is no need to set support devices of different lengths when supporting the front leg track, which is more convenient to use.

[0056] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A bridge erection machine track support device, comprising a plurality of mounting cylinders (1) arranged on the front leg track, characterized in that: Each of the mounting cylinders (1) is provided with a support assembly (2) for supporting the front leg rail, the support assembly (2) comprising a first support plate (21) fixed to the mounting cylinder (1), a support cylinder (22) slidably connected to the mounting cylinder (1), and a second support plate (23) fixed to the support cylinder (22), the first support plate (21) being used to abut against the lower surface of the front leg rail, a rotating shaft (11) being fixedly mounted on the first support plate (21), a mounting assembly (3) being provided on the rotating shaft (11), and the rotating shaft ( 11) is fixed to the front leg track through the mounting assembly (3), the first support plate (21) is rotatably connected to the front leg track, the mounting cylinder (1) is provided with a fixing assembly (4) for fixing the position of the support cylinder (22), and the front leg track is provided with a pushing assembly (6) for pushing the first support plate (21) to rotate. When the front leg track is not needed to support the front leg track, the pushing assembly (6) drives the first support plate (21) to rotate, so that the mounting cylinder (1) on the first support plate (21) faces upward, and the first support plate (21) and the front leg track are staggered.

2. A bridge erection machine track support device according to claim 1, characterized in that: The fixing assembly (4) comprises a first fixing ring (41) sleeved on the mounting tube (1) and a second fixing ring (42) fixed on the support tube (22); the first fixing ring (41) is threadedly connected to the mounting tube (1); when the first fixing ring (41) abuts against the second fixing ring (42), the support tube (22) cannot move toward the first support plate (21).

3. A bridge erection machine track support device according to claim 2, characterized in that: The pushing assembly (6) comprises a pushing shaft (61) rotatably connected to the front leg track and a pushing frame (62) fixed to the pushing shaft (61); the pushing frame (62) abuts against the surface of the first support plate (21); when the first support plate (21) and the front leg track are misaligned, the pushing frame (62) supports the first support plate (21) when it rotates out of the front leg track; and a driving assembly (7) for driving the pushing shaft (61) to rotate is provided on the front leg track.

4. A bridge erection machine track support device according to claim 3, characterized in that: The driving assembly (7) comprises a worm wheel (72) fixed on the driving shaft (61) and a worm (71) rotatably connected to the front leg track, wherein the worm (71) and the worm wheel (72) are meshed, and the driving shaft (61) is fixed by the meshed worm wheel (72) and the worm (71).

5. The bridge erection machine track support device according to claim 2, characterized in that: The first support plate (21) is provided with a reinforcement assembly (5) for reinforcing the first fixing ring (41) and the second fixing ring (42), the reinforcement assembly (5) comprising a reinforcement sleeve (51) fixed on the first support plate (21), a reinforcement screw (52) passing through the first fixing ring (41) and the second fixing ring (42), and a reinforcement nut (53) fixed on the reinforcement screw (52), the reinforcement screw (52) passing through the reinforcement sleeve (51) and being threadedly connected to the reinforcement sleeve (51), and when the reinforcement screw (52) and the reinforcement sleeve (51) are threadedly connected, the reinforcement nut (53) abuts against a side of the second fixing ring (42) facing away from the first fixing ring (41).

6. A bridge erection machine track support device according to claim 5, characterized in that: A reinforcing nut (54) is provided on the reinforcing screw rod (52), the reinforcing nut (54) and the reinforcing screw rod (52) are threadedly connected, and the reinforcing nut (54) is used to abut against a side of the first fixing ring (41) facing away from the second fixing ring (42).

7. The bridge erection machine track support device according to claim 1, characterized in that: The mounting assembly (3) comprises a mounting frame (31) fixed on the rotating shaft (11) and a mounting bolt (32) passing through the mounting frame (31), wherein the mounting bolt (32) is threadedly connected to the front leg track.

8. The bridge erection machine track support device according to claim 5, characterized in that: The first support plate (21) is provided with a locking assembly (8), and the locking assembly (8) is used to fix the first support plate (21) on the front support leg track. The locking assembly (8) includes a locking plate (81) slidably connected to the first support plate (21) and a locking spring (82) fixed to the locking plate (81). The locking spring (82) is fixed to the first support plate (21) at one end away from the locking plate (81). The locking spring (82) is used to pull the locking plate (81) to move in a direction away from the rotation axis (11). The reinforcing sleeve (51) is provided with a control assembly (9) for pushing the locking plate (81) to move in a direction close to the rotation axis (11). When the first support plate (21) abuts against the lower surface of the front support leg track, the control assembly (9) pushes the locking plate (81) to move, so that the locking plate (81) abuts against the front support leg track.

9. The bridge erection machine track support device according to claim 8, characterized in that: The control assembly (9) includes a control rod (91) slidably connected to the first support plate (21) and a control ring (92) fixed to the control rod (91), wherein the control ring (92) is arranged in the reinforcement sleeve (51), and the control rod (91) is provided with a control surface (93) for abutting against the side of the locking plate (81), and the control surface (93) is arranged obliquely. When the reinforcement screw (52) is threadedly connected in the reinforcement sleeve (51), the control ring (92) is pushed to move upward, and the control rod (91) pushes the locking plate (81) to move toward the direction close to the rotation axis (11).

10. The bridge erection machine track support device according to claim 4, characterized in that: A fixing rod (73) is slidably connected to the worm (71), and a fixing groove (74) for inserting the fixing rod (73) is provided on the front leg track. When the fixing rod (73) is in the fixing groove (74), the position of the worm (71) is fixed.

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