Beam erection pier top transverse moving device and method thereof

Abstract

The invention belongs to the field of bridge transverse movement, and discloses a beam erection pier top transverse movement device and a method thereof.The beam erection pier top transverse movement device comprises two jacks, the lifting ends of the jacks are fixedly connected with a first sliding rail arranged in the longitudinal direction, a first sliding groove is formed in the first sliding rail in the length direction of the first sliding rail, and a first sliding block is slidably connected into the first sliding groove; a first through hole is formed in the first sliding block, a first lead screw penetrates through the first through hole, the two ends of the first lead screw are rotationally connected with the first sliding rails, a threaded sleeve is in threaded connection with the first lead screw, the threaded sleeve is detachably connected with the first sliding block, a connecting plate is fixedly connected to the first sliding block, and the other end of the connecting plate is rotationally connected with a limiting clamping plate. The limiting clamping plate is in threaded connection with a second lead screw in the longitudinal direction, and one end of the second lead screw is rotationally connected with a limiting baffle; the limiting clamping plates clamp the side wall of the U-shaped beam, the limiting baffles abut against the end face of the U-shaped beam, and the U-shaped beam is prevented from sliding in the transverse moving process.

Description

Technical Field

[0001] The present invention belongs to the field of bridge transverse movement, and in particular relates to a beam erection pier top transverse movement device and a method thereof. Background Art

[0002] In bridge structures, U-shaped beams are widely used due to their unique structure and good stress-bearing performance. However, during the installation process of the U-shaped beam and during construction after installation, the lateral movement of the U-shaped beam is relatively difficult, especially when the pier top is moved horizontally, it is impossible to ensure that the U-shaped beam can be smoothly moved horizontally to the set position. For example, a U-shaped beam pier top transverse movement mechanism disclosed in Publication No. CN211646035U, when in use, places the supporting pier under the U-shaped beam whose longitudinal and transverse positions are to be adjusted, which plays a role of temporary support. By adjusting the oil pressure of the transverse displacement jack, the U-shaped beam can be moved along with the movement of the moving frame. For lateral movement, the longitudinal sliding plate drives the U-shaped beam to move longitudinally by adjusting the oil pressure of the longitudinal displacement jack. However, during the movement of the U-shaped beam, the supporting pier only supports the bottom of the U-shaped beam, and does not restrict the lateral movement direction of the U-shaped beam, which makes it easy for the U-shaped beam to slip during movement, resulting in the U-shaped beam being damaged and unusable during movement. In addition, when the pier tops installed at both ends of the U-shaped beam are not in the same horizontal plane, after the supporting pier lifts the U-shaped beam, the U-shaped beam slides to the lower end, causing a safety accident and the problem that the U-shaped beam cannot continue to move laterally. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a beam erection pier top transverse movement device and method, which solves the problem that the existing technology does not restrict the transverse movement direction of the U-shaped beam, making it easy for the U-shaped beam to slip during movement, thereby causing the U-shaped beam to be damaged and unusable during movement.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A beam erection pier top transverse movement device, comprising:

[0006] The two jacks are arranged vertically, and the lifting ends of the jacks are fixedly connected to a first slide rail arranged longitudinally, and a first slide groove is provided on the first slide rail along its length direction, and a first slider is slidably connected in the first slide groove, and a first through-hole is provided on the first slider, and a first screw rod is passed through the first through-hole, and both ends of the first screw rod are rotatably connected to the first slide rail, and a threaded sleeve is threadedly connected to the first screw rod, and the threaded sleeve is detachably connected to the first slider, and the first slider is fixedly connected to a connecting plate, and the other end of the connecting plate is rotatably connected to a limiting splint, and a second screw rod is threadedly connected to the limiting splint along the longitudinal direction, and one end of the second screw rod is rotatably connected to the limiting baffle;

[0007] A spacing adjustment mechanism, on which the bottoms of the two jacks are arranged, so that the two jacks can move toward or in opposite directions simultaneously in the lateral direction;

[0008] The transverse moving mechanism is provided on the transverse moving mechanism so that the spacing adjusting mechanism can move along the transverse direction.

[0009] Furthermore, the lateral movement mechanism includes a second slide rail, which is arranged horizontally, and a second slide groove is opened on the second slide rail along its length direction. A third screw rod with a rotatable connection is arranged in the second slide groove along its length direction, and a second slider is threadedly connected to the third screw rod. The second slider is slidably connected in the second slide groove, and the spacing adjustment mechanism is arranged on the second slider.

[0010] Furthermore, the spacing adjustment mechanism includes a third slide rail, which is laterally arranged on the second slider, and a third slide groove is provided on the third slide rail along its length direction, and a bidirectional lead screw with a rotation connection is provided in the third slide groove along its length direction, and the two threads of different rotation directions on the bidirectional lead screw are both threadedly connected with the third slider, the third slider is slidably connected in the third slide groove, and the bottom of the jack is fixedly connected to the third slider.

[0011] Furthermore, the upper end of the second slider is fixedly connected to a disc sleeve, the middle lower end of the third slide rail is fixedly connected to a disc, the disc is rotatably connected in the disc sleeve, an arc-shaped limit groove is opened on the disc, a limit column is set in the arc-shaped limit groove, and the limit column is fixedly connected to the disc sleeve.

[0012] Furthermore, a second through-hole is formed on the first sliding block, and a plurality of third through-holes are formed on the threaded sleeve along its axial direction, and the plurality of third through-holes are evenly distributed along the circumference of the threaded sleeve.

[0013] Furthermore, a hexagonal head is fixedly connected to one end of the second screw rod away from the limiting baffle.

[0014] Furthermore, the inner diameter of the first through hole is larger than the outer diameter of the first screw rod.

[0015] Furthermore, guide rods are provided on both sides of the first screw rod, the guide rods are arranged parallel to the first screw rod, one end of the guide rods is fixedly connected to the limit baffle, and the guide rods pass through the limit clamping plate so that the guide rods are slidably connected to the limit clamping plate.

[0016] Furthermore, an avoidance groove is provided at the upper end of the first slide rail along its length direction, the avoidance groove is communicated with the first slide groove, the upper end of the first slider is fixedly connected to a connecting block, the connecting block is slidably connected in the avoidance groove, the upper end of the connecting block is fixedly connected to a fixing plate, and a threaded hole is provided on the fixing plate.

[0017] A method for using a beam erection pier top transverse movement device comprises the following steps:

[0018] The U-shaped beam is fixed on the pier top, and the U-shaped beam is fixed on the pier top. The U-shaped beam is fixed on the pier top, and the U-shaped beam is fixed on the pier top. The U-shaped beam is fixed on the pier top, and the U-shaped beam is fixed on the pier top. The U-shaped beam is fixed on the pier top, and the U-shaped beam is fixed on the pier top. The U-shaped beam is fixed on the pier top, and the U-shaped beam is fixed on the pier top. The U-shaped beam is fixed on the pier top, and the U-shaped beam is fixed on the pier top.

[0019] Lateral movement: When the U-shaped beam moves laterally, the third screw is driven to rotate to drive the second slider to move laterally, thereby driving the U-shaped beam to move laterally;

[0020] Longitudinal movement: When the U-shaped beam moves longitudinally, one end of the U-shaped beam is end A and the other end is end B. The bolts on the fixing plate are removed, the first slider on the transverse movement device at end B is separated from the threaded sleeve, and the threaded sleeve is rotated and moved to the end of the first slide rail, and the first slider on the transverse movement device at end A is fixedly connected to the threaded sleeve. At this time, the threaded sleeve is restricted and cannot rotate. By driving the first screw rod at end A, the threaded sleeve is driven to move toward end B. The threaded sleeve drives the first slider, the limiting splint and the limiting baffle to move toward end B. At the same time, the U-shaped beam is pushed toward end B by cooperating with the limiting baffle. At this time, the first slider at end B is not restricted by the threaded sleeve and can slide in the first slide rail. Therefore, when the U-shaped beam moves toward end B, the limiting splint and limiting baffle at end B will follow the movement without restriction.

[0021] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0022] A fixed connection is a connection in which parts or components are fixed without any relative movement. There are two types of connections: detachable and non-detachable.

[0023] (1) A removable connection is a method of fastening components together using screws, splines, wedge pins, etc. This type of connection allows for disassembly during maintenance without damaging the components. However, the connectors used must be of the correct specifications (e.g., length of bolts, keys, wedge pins) and properly tightened.

[0024] (2) Non-detachable connections mainly refer to welding, riveting, and tenoning. Since they require forging, sawing, or oxygen cutting to disassemble during repair or replacement, spare parts generally cannot be reused. At the same time, when making connections, attention should be paid to workmanship quality, technical inspection, and remedial measures (such as calibration, polishing, etc.).

[0025] A threaded connection refers to a detachable connection in which the connected parts are connected together using a threaded part (or the threaded part of the connected parts).

[0026] A sliding connection is when two objects are in contact but not fixed and can slide relative to each other.

[0027] A rotational connection is a connection between parts that allows the parts to rotate relative to each other.

[0028] Beneficial effects of the present invention:

[0029] The present invention places two transverse movement devices below the two ends of the U-shaped beam and fixes them above the pier top, fixes the threaded sleeve and the first slider together to prevent the first slider from sliding, drives the limit clamp to move up by the jack, and the limit clamp fits the inclined surface of the side of the U-shaped beam to clamp the U-shaped beam. The jack drives the limit clamp to move up continuously, so that after the U-shaped beam is separated from the pier top, the U-shaped beam is further clamped and fixed under the action of the gravity of the U-shaped beam. After the limit clamp is driven by the jack to be at the same height, the U-shaped beam can be kept in a horizontal state, and the second screw rod is rotated to make the limit baffle press against the end face of the U-shaped beam, which can prevent the U-shaped beam from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0032] Figure 2 1 is a schematic structural diagram of a transverse movement device according to an embodiment of the present invention;

[0033] Figure 3 It is a partial structural diagram of the lateral movement mechanism and the spacing adjustment mechanism of an embodiment of the present invention;

[0034] Figure 4 This is a partial structural diagram of the disc sleeve of an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the first slide rail without the first screw rod in an embodiment of the present invention;

[0036] Figure 6 This is a partial structural diagram of a first slide rail provided with a first screw rod according to an embodiment of the present invention;

[0037] Figure 7 This is a partial structural diagram of a threaded sleeve according to an embodiment of the present invention;

[0038] Figure 8 It is a partial structural diagram of the first slider according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] It should be noted that, in the present application, the direction in which the U-shaped beam moves laterally is defined as the transverse direction, and the direction in which the U-shaped beam moves longitudinally is defined as the longitudinal direction.

[0042] like Figure 1-8 As shown, a beam erection pier top transverse movement device comprises:

[0043] Two jacks 1 are arranged vertically, and the lifting ends of the jacks 1 are fixedly connected to a first slide rail 2 arranged longitudinally. A first slide groove 3 is opened on the first slide rail 2 along its length direction, and a first slider 4 is slidably connected in the first slide groove 3. A first through-hole 5 is opened on the first slider 4, and a first screw rod 6 is passed through the first through-hole 5. Both ends of the first screw rod 6 are rotatably connected to the first slide rail 2, and a threaded sleeve 7 is threaded on the first screw rod 6. The threaded sleeve 7 is detachably connected to the first slider 4. A connecting plate 8 is fixedly connected to the first slider 4, and the other end of the connecting plate 8 is rotatably connected to a limiting splint 9. A second screw rod 10 is threadedly connected to the limiting splint 9 along the longitudinal direction, and one end of the second screw rod 10 is rotatably connected to a limiting baffle 11;

[0044] A spacing adjustment mechanism 12, on which the bottoms of the two jacks 1 are arranged, enables the two jacks 1 to move toward or in opposite directions simultaneously in the lateral direction;

[0045] The lateral movement mechanism 13 and the spacing adjustment mechanism 12 are arranged on the lateral movement mechanism 13 so that the spacing adjustment mechanism 12 can move along the lateral direction.

[0046] When the U-shaped beam is in a horizontal position, the two limit plates 9 are fixed to the upper and lower ends of the U-shaped beam, and the distance between the two limit plates 9 is adjusted according to the width of the U-shaped beam.

[0047] When the U-shaped beam moves laterally, the structure at its upper end is driven to move laterally by the laterally moving mechanism 13, thereby driving the U-shaped beam to move laterally;

[0048] When the U-shaped beam moves longitudinally, assuming that one end of the U-shaped beam is end A and the other end is end B, when the U-shaped beam is fine-tuned and moved in the direction of end B, the first slider 4 on the transverse movement device at end B is separated from the threaded sleeve 7, and the threaded sleeve 7 is rotated and moved to the end of the first slide rail 2, and the first slider 4 on the transverse movement device at end A is fixedly connected to the threaded sleeve 7. At this time, the threaded sleeve 7 is restricted and cannot rotate, and the threaded sleeve 7 is driven by the first screw rod 6 at end A to move in the direction of end B. The threaded sleeve 7 drives the first slider 4, the limiting splint 9 and the limiting baffle 11 to move in the direction of end B. At the same time, the U-shaped beam is pushed in the direction of end B by cooperating with the limiting baffle 11. At this time, the first slider 4 at end B is not restricted by the threaded sleeve 7 and can slide in the first slide rail 2. Therefore, when the U-shaped beam moves in the direction of end B, the limiting splint 9 and the limiting baffle 11 at end B will follow and move without restriction.

[0049] It should be noted that in this application, one of the first slide rails 2 on each transverse movement device is provided with a first screw rod 6 and a threaded sleeve 7, while the other first slide rail 2 is only slidably connected to the first slider 4. The purpose of this design is to avoid motion interference. The driving source of the first screw rod 6 can be set as a motor drive, that is, the motor is fixedly mounted at the end of the first slide rail 2, and the output end of the motor is fixedly connected to the first screw rod 6.

[0050] The transverse movement mechanism 13 includes a second slide rail 14, which is arranged in a transverse direction. A second slide groove 15 is formed on the second slide rail 14 along its length. A third screw rod 16 is rotatably connected to the second slide groove 15 along its length. A second slider 17 is threadedly connected to the third screw rod 16. The second slider 17 is slidably connected to the second slide groove 15. The spacing adjustment mechanism 12 is provided on the second slider 17. During use, the second slider 17 is driven to rotate by driving the third screw rod 16 to move laterally, thereby driving the U-shaped beam to move laterally. The driving source in this application can be set as a motor drive, that is, the motor is fixedly mounted at the end of the second slide rail 14, and the output end of the motor is fixedly connected to the third screw rod 16.

[0051] The spacing adjustment mechanism 12 includes a third slide rail 18, which is laterally arranged on the second slider 17. A third slide groove 19 is provided on the third slide rail 18 along its length. A rotatably connected bidirectional lead screw 20 is provided in the third slide groove 19 along its length. Two threads of different rotation directions on the bidirectional lead screw 20 are both threadedly connected to a third slider 21. The third slider 21 is slidably connected in the third slide groove 19, and the bottom of the jack 1 is fixedly connected to the third slider 21. When in use, the bidirectional lead screw 20 is driven to rotate so that the two third sliders 21 move toward or oppositely, thereby adjusting the distance between the two limit clamps 9 to adapt to the width of the U-shaped beam. The driving source in the present application can be set to a motor drive, that is, the motor is fixedly mounted on the end of the third slide rail 18, and the output end of the motor is fixedly connected to the bidirectional lead screw 20.

[0052] A disc sleeve 22 is fixedly connected to the upper end of the second slider 17, and a disc 23 is fixedly connected to the middle lower end of the third slide rail 18. The disc 23 is rotatably connected to the disc sleeve 22. An arc-shaped limit groove 24 is formed on the disc 23, and a limit post 25 is provided in the arc-shaped limit groove 24. The limit post 25 is fixedly connected to the disc sleeve 22. In the present application, when the transverse movement devices at both ends of the U-shaped beam jointly drive the U-shaped beam to move transversely, there may be an error in the speed of movement of the two ends of the U-shaped beam. When an error occurs, the U-shaped beam will deflect. At this time, the disc 23 will rotate slightly within the disc sleeve 22, causing the structure at the upper end of the disc 23 to rotate accordingly. The purpose of this design is to reduce the large torsional force generated by the error in the U-shaped beam, thereby destroying the stress inside the U-shaped beam.

[0053] The first slider 4 is further provided with a second through-hole 26, and the threaded sleeve 7 is provided with a plurality of third through-holes 27 along its axial direction. The plurality of third through-holes 27 are evenly distributed along the circumference of the threaded sleeve 7. During use, when the first slider 4 and the threaded sleeve 7 need to be connected together, the threaded sleeve 7 can be rotated toward the first slider 4 until one of the third through-holes 27 on the threaded sleeve 7 is aligned with the second through-hole 26. A bolt is then passed through the third through-hole 27 and the second through-hole 26 and tightened with a nut to achieve a detachable connection.

[0054] A hexagonal head 28 is fixedly connected to the end of the second screw rod 10 away from the stop plate 11. Since the second screw rod 10 is close to the side of the U-shaped beam, a tool can be used to connect with the hexagonal head 28, thereby driving the second screw rod 10 to rotate, so that the stop plate 11 abuts against the end face of the U-shaped beam.

[0055] The inner diameter of the first through hole 5 is larger than the outer diameter of the first screw rod 6. When the first slider 4 is separated from the threaded sleeve 7, the first slider 4 does not contact the first screw rod 6, so that the first slider 4 can slide along the first slide rail 2 without restriction.

[0056] Guide rods 29 are provided on both sides of the first screw rod 6. The guide rods 29 are arranged parallel to the first screw rod 6. One end of the guide rod 29 is fixedly connected to the limit baffle 11. The guide rods 29 pass through the limit clamping plate 9 so that the guide rods 29 are slidably connected to the limit clamping plate 9. The provision of the guide rods 29 can, on the one hand, increase the stability of the limit baffle 11, and on the other hand, enable the limit baffle 11 to move together with the limit clamping plate 9, so that the limit baffle 11 can better fit the end face of the U-shaped beam.

[0057] The upper end of the first slide rail 2 is provided with an escape groove 30 along its length, which communicates with the first slide groove 3. A connecting block 31 is fixedly connected to the upper end of the first slider 4, which slides within the escape groove 30. A fixing plate 34 is fixedly connected to the upper end of the connecting block 31, which has a threaded hole 35 formed therein. When the U-shaped beam does not need to move longitudinally, to prevent the first slider 4 from sliding within the first slide rail 2, bolts are screwed into the threaded holes 35 and tightened, ensuring that the bolts are firmly against the upper surface of the first slide rail 2, further enhancing the stability of the device.

[0058] A method for using a beam erection pier top transverse movement device comprises the following steps:

[0059] Fixing: Place the two transverse devices under the two ends of the U-beam and fix them above the pier top. According to the width of the U-beam, drive the bidirectional lead screw 20 to rotate, so that the two third sliders 21 move toward or oppositely, so as to adjust the distance between the two limit clamps 9 to adapt to the width of the U-beam. Screw the bolts into the threaded holes 35 and tighten them so that the bolts are tightly against the upper surface of the first slide rail 2. Connect the threaded sleeve 7 and the first slider 4 together, fix the first slider 4, and fix it through the thousands of The jack 1 drives the limiting splint 9 to move upward, and the limiting splint 9 fits the inclined surface of the side of the U-shaped beam to clamp the U-shaped beam. The jack 1 drives the limiting splint 9 to move upward continuously, so that after the U-shaped beam leaves the pier top, the U-shaped beam is further clamped and fixed under the action of the gravity of the U-shaped beam. After the limiting splint 9 is driven by the jack 1 to be at the same height, the U-shaped beam can be kept in a horizontal state. By rotating the second screw rod 10, the limiting baffle 11 is pressed against the end face of the U-shaped beam, which can prevent the U-shaped beam from slipping.

[0060] Lateral movement: When the U-shaped beam moves laterally, the third screw rod 16 is driven to rotate to drive the second slider 17 to move laterally, thereby driving the U-shaped beam to move laterally;

[0061] When the U-shaped beam moves longitudinally, one end of the U-shaped beam is end A and the other end is end B. The bolts on the fixing plate 34 are removed, the first slider 4 on the transverse moving device at end B is separated from the threaded sleeve 7, and the threaded sleeve 7 is rotated to move to the end of the first slide rail 2, and the first slider 4 on the transverse moving device at end A is fixedly connected to the threaded sleeve 7. At this time, the threaded sleeve 7 is restricted and cannot rotate, and the threaded sleeve 7 is driven by the first screw rod 6 at end A to move toward end B. The threaded sleeve 7 drives the first slider 4, the limiting splint 9 and the limiting baffle 11 to move toward end B. At the same time, the U-shaped beam is pushed toward end B by cooperating with the limiting baffle 11. At this time, the first slider 4 at end B is not restricted by the threaded sleeve 7 and can slide in the first slide rail 2. Therefore, when the U-shaped beam moves toward end B, the limiting splint 9 and the limiting baffle 11 at end B will follow the movement without restriction.

[0062] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0063] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A beam erection pier top transverse movement device, characterized in that: include: Two jacks (1), the two jacks (1) are arranged vertically, the lifting ends of the jacks (1) are fixedly connected to a first slide rail (2) arranged longitudinally, the first slide rail (2) is provided with a first slide groove (3) along its length direction, a first slider (4) is slidably connected in the first slide groove (3), the first slider (4) is provided with a first through hole (5), a first screw rod (6) is passed through the first through hole (5), both ends of the first screw rod (6) are rotatably connected to the first slide rail (2), a threaded sleeve (7) is threadedly connected to the first screw rod (6), the threaded sleeve (7) is detachably connected to the first slider (4), a connecting plate (8) is fixedly connected to the first slider (4), the other end of the connecting plate (8) is rotatably connected to a limiting clamp (9), a second screw rod (10) is threadedly connected to the limiting clamp (9) along the longitudinal direction, and one end of the second screw rod (10) is rotatably connected to a limiting baffle (11); A spacing adjustment mechanism (12), wherein the bottoms of the two jacks (1) are arranged on the spacing adjustment mechanism (12), so that the two jacks (1) can simultaneously move toward each other or move in opposite directions along the transverse direction; A transverse moving mechanism (13) is provided on which the spacing adjustment mechanism (12) is arranged so that the spacing adjustment mechanism (12) can move in a transverse direction.

2. The beam erection pier top transverse movement device according to claim 1, characterized in that: The transverse moving mechanism (13) includes a second slide rail (14), the second slide rail (14) is arranged in the transverse direction, a second slide groove (15) is provided on the second slide rail (14) along its length direction, a third screw rod (16) is provided in the second slide groove (15) along its length direction, a second slider (17) is threadedly connected to the third screw rod (16), the second slider (17) is slidably connected in the second slide groove (15), and the spacing adjustment mechanism (12) is provided on the second slider (17).

3. The beam erection pier top transverse movement device according to claim 2, characterized in that: The spacing adjustment mechanism (12) includes a third slide rail (18), which is arranged on the second slider (17) in the transverse direction. A third slide groove (19) is provided on the third slide rail (18) along its length direction. A bidirectional lead screw (20) is provided in the third slide groove (19) along its length direction. The two threads of different rotation directions on the bidirectional lead screw (20) are both threadedly connected with a third slider (21). The third slider (21) is slidably connected in the third slide groove (19). The bottom of the jack (1) is fixedly connected to the third slider (21).

4. The beam erection pier top transverse movement device according to claim 3, characterized in that: The upper end of the second slider (17) is fixedly connected to a disc sleeve (22), the middle lower end of the third slide rail (18) is fixedly connected to a disc (23), the disc (23) is rotatably connected in the disc sleeve (22), an arc-shaped limiting groove (24) is provided on the disc (23), a limiting column (25) is provided in the arc-shaped limiting groove (24), and the limiting column (25) is fixedly connected to the disc sleeve (22).

5. The beam erection pier top transverse movement device according to claim 1, characterized in that: The first slider (4) is also provided with a second through hole (26), and the threaded sleeve (7) is provided with a plurality of third through holes (27) along its axial direction. The plurality of third through holes (27) are evenly distributed along the circumference of the threaded sleeve (7).

6. The beam erection pier top transverse movement device according to claim 1, characterized in that: One end of the second screw rod (10) away from the limiting baffle (11) is fixedly connected to a hexagonal head (28).

7. The beam erection pier top transverse movement device according to claim 1, characterized in that: The inner diameter of the first through hole (5) is greater than the outer diameter of the first screw rod (6).

8. The beam erection pier top transverse movement device according to claim 1, characterized in that: Guide rods (29) are provided on both sides of the first screw rod (6), the guide rods (29) are arranged parallel to the first screw rod (6), one end of the guide rod (29) is fixedly connected to the limit baffle (11), and the guide rod (29) passes through the limit clamping plate (9) so that the guide rod (29) and the limit clamping plate (9) are slidably connected.

9. The beam erection pier top transverse movement device according to claim 1, characterized in that: The upper end of the first slide rail (2) is provided with an avoidance groove (30) along its length direction, the avoidance groove (30) is communicated with the first slide groove (3), the upper end of the first slider (4) is fixedly connected with a connecting block (31), the connecting block (31) is slidably connected in the avoidance groove (30), the upper end of the connecting block (31) is fixedly connected with a fixing plate (34), and the fixing plate (34) is provided with a threaded hole (35).

10. A method for using a beam erection pier top transverse movement device, using the beam erection pier top transverse movement device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Fixing: Place the two transverse moving devices below the two ends of the U-shaped beam and fix them above the pier top. According to the width of the U-shaped beam, drive the bidirectional screw (20) to rotate so that the two third sliders (21) move toward or oppositely, thereby adjusting the distance between the two limit clamps (9) to adapt to the width of the U-shaped beam. Screw the bolts into the threaded holes (35) and tighten them so that the bolts are tightly against the upper surface of the first slide rail (2). Connect the threaded sleeve (7) and the first slider (4) together, fix the first slider (4), and use the jack to fix it. The top (1) drives the limiting clamp (9) to move upward, and the limiting clamp (9) fits the inclined surface of the side of the U-shaped beam to achieve the clamping of the U-shaped beam. The jack (1) drives the limiting clamp (9) to move upward continuously, so that after the U-shaped beam is separated from the pier top, the U-shaped beam is further clamped and fixed under the action of the gravity of the U-shaped beam. After the limiting clamp (9) is driven by the jack (1) to be at the same height, the U-shaped beam can be kept in a horizontal state. By rotating the second screw rod (10), the limiting baffle (11) is pressed against the end face of the U-shaped beam, which can prevent the U-shaped beam from slipping. Transverse movement: When the U-shaped beam moves transversely, the third screw rod (16) is driven to rotate to drive the second slider (17) to move transversely, thereby driving the U-shaped beam to move transversely; Longitudinal movement: When the U-shaped beam is longitudinally moved, one end of the U-shaped beam is end A and the other end is end B. Remove the bolts on the fixing plate (34), separate the first slider (4) on the transverse moving device at end B from the threaded sleeve (7), and rotate the threaded sleeve (7) to the end of the first slide rail (2). Then, fix the first slider (4) on the transverse moving device at end A to the threaded sleeve (7). At this time, the threaded sleeve (7) is restricted and cannot rotate. The threaded sleeve is driven by the first screw rod (6) at end A. (7) moves toward the B end, the threaded sleeve (7) drives the first slider (4), the limiting clamp (9) and the limiting baffle (11) to move toward the B end, and at the same time, the U-shaped beam is pushed toward the B end by cooperating with the limiting baffle (11). At this time, the first slider (4) at the B end is not restricted by the threaded sleeve (7) and can slide in the first slide rail (2). Therefore, when the U-shaped beam moves toward the B end, the limiting clamp (9) and the limiting baffle (11) at the B end will follow and move without restriction.

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