Bridge alignment laser monitoring device

Abstract

The present application relates to the technical fields of bridge structure health monitoring, in particular to a bridge line laser monitoring device, which comprises a fixed chamber and a laser monitoring instrument, the top of the fixed chamber is provided with a horizontal direction No. 1 slide rail, the inner wall of the fixed chamber is provided with a vertical direction No. 2 slide rail, the inner side upper end of the fixed chamber is provided with a movable assembly for the movement of the laser monitoring instrument, and the lower side of the movable assembly is provided with an adjusting assembly for adjusting the position of the laser monitoring instrument; the effect of the left-right reciprocating sliding of the sliding plate makes the push plate reciprocally push the No. 2 turntable to rotate, and under the transmission of the circular gear, the laser monitoring instrument slides left and right, which can timely adjust the monitoring of the bridge line, and can monitor the change of the construction progress, the forward and reverse rotation of the No. 2 rotating rod drives the No. 3 turntable and the No. 4 turntable to realize the locking, sliding and steering effects of the laser monitoring instrument, and the movement speed can adapt to the construction progress.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge structure health monitoring, in particular to a bridge line laser monitoring device. BACKGROUND

[0002] Bridge line monitoring is an important means to ensure the construction quality and structural safety of the bridge, and its core lies in that through scientific and reasonable monitoring methods and equipment, the key parameters such as line shape, deflection and strain of the bridge in the construction process are collected and analyzed in real time and accurately.

[0003] China Patent No. CN217155307U discloses a bridge line laser monitoring device, which comprises a shell, a cavity is formed in the shell, a circular hole is formed in one end of the shell, the circular hole penetrates through the end wall of the shell and is in communication with the cavity, and a laser, a first rotating shaft, a second rotating shaft, a first motor and a protective film are installed in the cavity, the laser is coaxial with the circular hole, the first rotating shaft is located on both sides of the end of the laser close to the circular hole, the first rotating shaft is symmetrically distributed about the laser, and the second rotating shaft and the first motor are located at the end of the laser away from the circular hole.

[0004] Although the above-mentioned patent can effectively solve the problem of invalidation of the bridge line laser monitoring device caused by dust accumulation by using the laser, the first rotating shaft and the second rotating shaft, it is necessary to monitor the construction progress of the bridge in real time during the construction of the bridge, and it is necessary to clean the laser monitoring device in time.

[0005] Therefore, we propose a bridge line laser monitoring device. SUMMARY

[0006] The purpose of the present application is to provide a bridge line laser monitoring device to solve the problems raised in the background.

[0007] To achieve the above-mentioned purpose, the present application provides a bridge line laser monitoring device, which comprises a fixed chamber and a laser monitoring instrument, the top of the fixed chamber is provided with a horizontal first slide rail, the inner wall of the fixed chamber is provided with a vertical second slide rail, a cross bar is slidably connected to the second slide rail, a first cross plate is fixedly connected to the inner wall of the fixed chamber on both sides, an activity assembly for the activity of the laser monitoring instrument is arranged on the inner side of the upper end of the fixed chamber, and an adjusting assembly for adjusting the position of the laser monitoring instrument is arranged below the activity assembly.

[0008] As the preferred, a plurality of horizontal rods are slidingly connected to the second slide rail, and the horizontal rods are fixedly connected by vertical columns.

[0009] As the preferred, the adjusting assembly comprises a first motor fixedly connected to the inner wall of the fixed chamber, an output end of the first motor is fixedly connected to a first rotating rod, an end of the first rotating rod away from the first motor is fixedly connected to a first rotating disc, and a connecting rod is rotatably connected to the periphery of the first rotating disc away from the first rotating rod.

[0010] As the preferred, an inner side of an end of the first rotating rod is rotatably connected to the first fixed frame, an end of the first fixed frame away from the first rotating rod is fixedly connected to a second horizontal plate, a square slot is formed in a side of the second horizontal plate close to the first motor, a sliding plate is slidingly connected to the square slot, a plurality of push rods are fixedly connected to a side of the sliding plate, and an inclined surface is formed in a side of the push rods close to each other.

[0011] The connecting rod is rotatably connected to a side of the sliding plate away from the first rotating rod, and an arc-shaped rod is fixedly connected to a side of the sliding plate away from the connecting rod.

[0012] As the preferred, an inner wall of the fixed chamber is rotatably connected to a second rotating rod, an outer wall of the second rotating rod is telescopically connected to a buckle block, an outer wall of a middle end of the second rotating rod is fixedly connected to a second rotating disc, a plurality of array blocks are fixedly connected to a side edge of the second rotating disc, the array blocks are circularly arranged at the edge of the second rotating disc, an outer wall of an end of the second rotating rod is fixedly connected to a third rotating disc, an end of the second rotating rod away from the third rotating disc is rotatably connected to a fourth rotating disc, a side of the fourth rotating disc is formed with a ratchet gear slot, the ratchet gear slot and the buckle block are engaged with each other, and the buckle block is located at an inner side of the ratchet gear slot.

[0013] The inclined surface of the push rod and the array block are matched in spacing position, the third rotating disc and the fourth rotating disc are both elliptical discs, and a side of the arc-shaped rod is matched with an outer wall with a smaller diameter of the fourth rotating disc.

[0014] As the preferred, a fixed block is fixedly connected to the top of the first fixed frame, a gear slot downwardly slidingly connected to a rack is formed in an inner side of the fixed block, a middle end top of the rack is fixedly connected to a fixed plate, a fixed disc is fixedly connected to the top of the fixed plate, a restriction member is fixedly connected to both sides of the bottom of the fixed plate, and a strip-shaped hole is formed in an outer wall of the restriction member.

[0015] As the preferred of the present application, the second rotating disc is provided with a circular gear, the circular gear is meshed with the array block, the center of the circular gear is fixedly connected with a third rotating rod, the end of the third rotating rod is slidably connected in the strip-shaped hole, one end of the third rotating rod is fixedly connected with a cam, and the outer wall of the cam is attached to the outer wall of the fourth rotating disc.

[0016] As the preferred of the present application, the movable assembly comprises a second fixing frame, the second fixing frame is fixedly connected to the top of the fixed disc, a second motor is fixedly connected to the inner side of the second fixing frame, a fixed column is fixedly connected to the top of the second fixing frame, a sliding column is rotatably connected to the inner side of the fixed column, the output end of the second motor is fixedly connected to the lower end of the sliding column, and a fourth rotating rod is rotatably connected to the upper end of the sliding column.

[0017] As the preferred of the present application, one end of the fourth rotating rod is fixedly connected with a bent plate, the laser monitor is fixedly connected to the top of the bent plate, a poking rod is fixedly connected to the outer wall of the end of the fourth rotating rod away from the bent plate, and a poking ball is fixedly connected to the end of the poking rod away from the bent plate.

[0018] As the preferred of the present application, the outer wall of the fixed column is slidably connected with a sliding ring, the sliding ring is integrally fixedly connected by two annular rings through a connecting column, an inner annular groove is formed in the inner wall of the upper end annular ring of the sliding ring, the poking ball is located in the inner annular groove, an outer annular groove is formed in the outer wall of the lower end annular ring of the sliding ring, a protruding column is arranged in the outer annular groove, a fifth rotating disc is rotatably connected to the top of the second fixing frame, a bent rod is fixedly connected to the outer side of the fifth rotating disc, and the bent rod is fixedly connected to the protruding column on the side away from the fifth rotating disc.

[0019] The outer wall of one side of the transmission rod is attached to the outer wall of one side of the fifth rotating disc.

[0020] Compared with the prior art, the bridge linear laser monitoring device has the following beneficial effects:

[0021] 1. In the bridge linear laser monitoring device, the sliding plate reciprocally slides left and right, the push plate reciprocally pushes the second rotating disc to rotate, and the laser monitor slides left and right under the transmission of the circular gear, so that the bridge linear monitoring can be timely adjusted, and the monitoring can be performed according to the construction progress.

[0022] 2. In the bridge linear laser monitoring device, the components in the movable assembly are mutually transmitted, so that the laser monitor forms an up and down movement, which can make the monitoring range of the laser monitor larger and more flexible.

[0023] 3、The bridge linear laser monitoring device, through the forward and reverse rotation of the second rotating rod, drives the third rotating disc and the fourth rotating disc to realize the locking, sliding and steering effects of the laser monitoring instrument, and the movement speed can adapt to the construction progress. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall perspective view of the bridge linear laser monitoring device of the application.

[0025] Figure 2 It is the overall transverse sectional view of the bridge linear laser monitoring device of the application.

[0026] Figure 3 It is the overall longitudinal sectional view of the bridge linear laser monitoring device of the application.

[0027] Figure 4 It is the internal perspective view of the fixed chamber of the bridge linear laser monitoring device of the application.

[0028] Figure 5 It is the internal component expanded perspective view of the fixed chamber of the bridge linear laser monitoring device of the application.

[0029] Figure 6 It is the perspective view of the adjusting assembly of the bridge linear laser monitoring device of the application.

[0030] Figure 7 It is the expanded perspective view of the movable assembly of the bridge linear laser monitoring device of the application.

[0031] Figure 8 It is the half-sectional expanded perspective view of the movable assembly of the bridge linear laser monitoring device of the application.

[0032] The meanings of the various reference numbers in the figure are as follows:

[0033] 1, fixed chamber; 11, No. 1 slide rail; 12, No. 2 slide rail; 121, cross rod; 1211, transmission rod; 122, stand; 13, No. 1 cross plate; 2, laser monitoring instrument;

[0034] 3, adjusting assembly; 31, No. 1 motor; 311, No. 1 rotating rod; 32, No. 1 rotating disc; 321, connecting rod; 3211, arc-shaped rod; 33, No. 1 fixed frame; 331, No. 2 cross plate; 332, sliding plate; 3321, push rod; 34, No. 2 rotating rod; 341, buckle block; 342, No. 2 rotating disc; 3421, array block; 343, No. 3 rotating disc; 344, No. 4 rotating disc; 3441, ratchet gear groove; 35, fixed block; 351, rack; 352, fixed plate; 3521, fixed disc; 353, limiting piece; 3531, strip-shaped hole; 36, No. 3 rotating rod; 361, circular gear; 362, cam;

[0035] 4, moving assembly; 41, second fixed frame; 411, second motor; 412, fixed column; 42, sliding column; 421, fourth rotating rod; 4211, bending plate; 4212, pushing rod; 4213, pushing ball; 43, sliding ring; 431, inner annular groove; 432, outer annular groove; 44, fifth rotating disc; 441, bending rod; 442, protruding column. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] Embodiment one

[0039] Please refer to Figures 1-8 The embodiment provides a bridge alignment laser monitoring device, which comprises a fixed chamber 1 and a laser monitoring instrument 2. The top of the fixed chamber 1 is provided with a horizontal first sliding rail 11, and the inner wall of the fixed chamber 1 is provided with a vertical second sliding rail 12. A cross rod 121 is slidably connected to the second sliding rail 12. A first horizontal plate 13 is fixedly connected to the inner wall of the fixed chamber 1 on both sides. A moving assembly 4 is arranged on the inner side of the fixed chamber 1 at the upper end and is used for moving the laser monitoring instrument 2. An adjusting assembly 3 is arranged below the moving assembly 4 and is used for adjusting the position of the laser monitoring instrument 2. A plurality of cross rods 121 are slidably connected to the second sliding rail 12. The plurality of cross rods 121 are fixedly connected through a vertical column 122. The outer wall of the upper cross rod 121 is fixedly connected with a transmission rod 1211.

[0040] As Figures 4-6As shown, the adjusting assembly 3 comprises a motor 31 fixedly connected to the inner wall of the fixed chamber 1, the output end of the motor 31 is fixedly connected with a first rotating rod 311, the first rotating rod 311 is fixedly connected with a first rotating disc 32 at the end away from the motor 31, the first rotating disc 32 is rotatably connected with a connecting rod 321 at the side peripheral position away from the first rotating rod 311, the inner wall of the fixed chamber 1 is also fixedly connected with a first fixed frame 33, the first rotating rod 311 penetrates and is rotatably connected to the inner side of one end of the first fixed frame 33, the first fixed frame 33 is fixedly connected with a second transverse plate 331 at the end away from the first rotating rod 311, the second transverse plate 331 is provided with a square slot at the side close to the motor 31, a sliding plate 332 is slidably connected in the square slot, a plurality of push rods 3321 are fixedly connected to the side of the sliding plate 332, and inclines are formed at the sides close to each other of the plurality of push rods 3321, wherein the connecting rod 321 is rotatably connected to the side of the sliding plate 332 at the end away from the first rotating rod 311, and the sliding plate 332 is fixedly connected with an arc-shaped rod 3211 at the side away from the connecting rod 321.

[0041] Wherein: the first fixed frame 33 is a telescopic part, when the cam 362 is driven to move upward by the fourth rotating disc 344, the first fixed frame 33 will be passively elongated.

[0042] As shown in the figure, Figure 6 The inner wall of the fixed chamber 1 is rotatably connected with a second rotating rod 34, the outer wall of the second rotating rod 34 is telescopically connected with a buckle block 341, the middle end of the outer wall of the second rotating rod 34 is fixedly connected with a second rotating disc 342, a plurality of array blocks 3421 are fixedly connected to the side edge position of the second rotating disc 342, the plurality of array blocks 3421 are circularly arrayed at the edge position of the second rotating disc 342, the outer wall of one end of the second rotating rod 34 is fixedly connected with a third rotating disc 343, the second rotating rod 34 is rotatably connected with a fourth rotating disc 344 at the end away from the third rotating disc 343, the fourth rotating disc 344 is provided with a ratchet gear slot 3441 at the side, the ratchet gear slot 3441 is meshed with the buckle block 341, and the buckle block 341 is located at the inner side of the ratchet gear slot 3441, wherein the spacing position between the inclines of the push rods 3321 and the array blocks 3421 is matched, the third rotating disc 343 and the fourth rotating disc 344 are both elliptical discs, and the side of the arc-shaped rod 3211 is matched with the outer wall with smaller diameter of the fourth rotating disc 344.

[0043] Wherein: the third rotating disc 343 and the fourth rotating disc 344 are both provided with the ratchet gear slot 3441 at the inner side, and the buckle block 341 and the ratchet gear slot 3441 at both ends are distributed in opposite directions.

[0044] As shown in the figure, Figure 5As shown, the top of the first fixed frame 33 is fixedly connected with a fixed block 35, the inner side of the fixed block 35 is slidably connected with a gear groove downward rack 351, the middle end top of the rack 351 is fixedly connected with a fixed plate 352, the top of the fixed plate 352 is fixedly connected with a fixed disc 3521, the bottom of the two sides of the fixed plate 352 is fixedly connected with a limiting piece 353, the outer wall of the limiting piece 353 is provided with a strip-shaped hole 3531, the upper side of the second rotating disc 342 is provided with a circular gear 361, the circular gear 361 is in meshing connection with the array block 3421, the center of the circular gear 361 is fixedly connected with a third rotating rod 36, the end of the third rotating rod 36 is slidably connected in the strip-shaped hole 3531, one end of the third rotating rod 36 is fixedly connected with a cam 362, and the outer wall of the cam 362 is attached to the outer wall of the fourth rotating disc 344.

[0045] As shown in the figure, Figures 7-8 The movable assembly 4 comprises a second fixed frame 41, the second fixed frame 41 is fixedly connected to the top of the fixed disc 3521, the inner side of the second fixed frame 41 is fixedly connected with a second motor 411, the top of the second fixed frame 41 is fixedly connected with a fixed column 412, the inner side of the fixed column 412 is rotatably connected with a sliding column 42, the output end of the second motor 411 is fixedly connected with the lower end of the sliding column 42, the upper end of the sliding column 42 is rotatably connected with a fourth rotating rod 421, one end of the fourth rotating rod 421 is fixedly connected with a bent plate 4211, the laser monitor 2 is fixedly connected to the top of the bent plate 4211, the outer wall of the fourth rotating rod 421 away from the bent plate 4211 is fixedly connected with a push rod 4212, the end of the push rod 4212 away from the bent plate 4211 is fixedly connected with a push ball 4213, the outer wall of the fixed column 412 is slidably connected with a sliding ring 43, the sliding ring 43 is integrally connected by two circular rings through a connecting column, the inner wall of the upper end of the sliding ring 43 is provided with an inner annular groove 431, the push ball 4213 is located in the inner annular groove 431, the outer wall of the lower end of the sliding ring 43 is provided with an outer annular groove 432, the outer annular groove 432 is provided with a protruding column 442, the top of the second fixed frame 41 is rotatably connected with a fifth rotating disc 44, the outer side of the fifth rotating disc 44 is fixedly connected with a bent rod 441, and the bent rod 441 is fixedly connected with the protruding column 442 on the side away from the fifth rotating disc 44, wherein: the outer wall of one side of the transmission rod 1211 is attached to the outer wall of one side of the fifth rotating disc 44.

[0046] Therefore, when the laser monitor 2 needs to follow the construction progress to adjust the position, as Figures 2-4 shown, in the preparation stage, the staff fixes the device on the bridge, after the alignment is completed, starts to detect by using the laser monitor 2, under the continuous advancement of the construction progress, the adjusting assembly 3 starts to operate;

[0047] The first rotating rod 311 drives the first rotating disc 32 to rotate under the drive of the first motor 31. At this time, the connecting rods 321 located at the periphery of the first rotating disc 32 will form a push-pull effect on the sliding plate 332. At this time, the sliding plate 332 will slide left and right in the square groove of the second horizontal plate 331, and drive the plurality of push rods 3321 on one side to reciprocate left and right. At this time, the push rods 3321 will push the array blocks 3421 to make the second rotating disc 342 rotate during the reciprocating sliding process, and the angle formed between the two array blocks 3421 will drive the circular gear 361 above the second rotating disc 342 to rotate. At this time, the rotation of the circular gear 361 will gradually push the rack 351 to slide to one side, and the rack 351 will drive the laser monitor 2 above to slide. As the progress advances, the position to be monitored by the laser monitor 2 also changes. During the horizontal movement, the bridge line can be monitored in time, and the monitoring can be changed with the construction progress.

[0048] It should be noted that when the construction progress reaches the next stage, the laser monitor 2 needs to be fixed. At this time, the fourth rotating disc 344 will gradually rotate to the side wall with a larger diameter, which will lift the cam 362. At this time, the first fixing frame 33 is elongated, so that the circular gear 361 is completely separated from the array block 3421. At this time, the laser monitor 2 driven and slid by the movable assembly 4 will stop sliding and stay at the current position for monitoring.

[0049] In addition, when the position of the laser monitor 2 needs to be adjusted, the second rotating disc 342 will rotate to drive the second rotating rod 34 and the third rotating disc 343 to rotate. During the rotation of the third rotating disc 343, the third rotating disc 343 will gradually rotate to the side wall with a larger diameter and be attached to the horizontal rod 121, and during this process, the horizontal rod 121 will slide upward or downward. Similarly, the transmission rod 1211 will also move upward or downward. At this time, the transmission rod 1211 drives the fifth rotating disc 44 and the bent rod 441 to rotate by a certain angle. At this time, the protruding column 442 at the end of the bent rod 441 will move up and down under the limitation of the outer annular groove 432. At this time, the sliding ring 43 that moves up will also drive the fourth rotating rod 421 and the bent plate 4211 to rotate by limiting the movement of the push ball 4213 in the inner annular groove 431, so that the laser monitor 2 forms an upward and downward movement. This can make the monitoring range of the laser monitor 2 larger and more flexible. It should be noted that the laser monitor 2 can also be rotated under the drive of the second motor 411, so that the monitoring position of the laser monitor 2 is more variable, and the effect of monitoring different angles at different positions is achieved.

[0050] In addition, as Figure 6As shown, the sliding plates 332 and the inclined surfaces of the push rods 3321 on both sides are in opposite directions, so when the first motors 31 on both sides operate alternately, the second rotating shaft 34 can realize forward and reverse rotation, so that the rotating direction changes, and the push rods 3321 push the array blocks 3421 to rotate a small angle, and the circular gear 361 drives the action speed of the laser monitor 2 to adapt to the construction progress.

[0051] And the forward and reverse rotation of the second rotating shaft 34 is switched again in cooperation with the inner side ratchet gear groove 3441 of the third rotating disc 343 and the fourth rotating disc 344, which makes the two first motors 31 on both sides control the third rotating disc 343 to rotate to bring the effect of lifting and lowering the laser monitor 2, and the fourth rotating disc 344 brings the effect of locking the position of the laser monitor 2, and the two do not conflict with each other.

[0052] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A laser monitoring device for bridge beam alignment, comprising a fixed chamber (1) and a laser monitoring instrument (2), characterized in that: The top of the fixed chamber (1) is provided with a horizontal first slide rail (11), the inner wall of the fixed chamber (1) is provided with a vertical second slide rail (12), a crossbar (121) is slidably connected on the second slide rail (12), a first horizontal plate (13) is fixedly connected to the inner walls on both sides of the fixed chamber (1), an active component (4) for the movement of the laser monitor (2) is provided at the upper inner side of the fixed chamber (1), and an adjustment component (3) for adjusting the position of the laser monitor (2) is provided below the active component (4). The adjustment assembly (3) includes a No. 1 motor (31), which is fixedly connected to the inner wall of the fixed chamber (1). The output end of the No. 1 motor (31) is fixedly connected to a No. 1 rotating rod (311). A No. 1 turntable (32) is fixedly connected to the end of the No. 1 rotating rod (311) away from the No. 1 motor (31). A connecting rod (321) is rotatably connected to the periphery of the No. 1 turntable (32) on the side away from the No. 1 rotating rod (311). The inner wall of the fixed chamber (1) is also fixedly connected to a first fixed frame (33). The first rotating rod (311) is rotatably connected through the inner side of one end of the first fixed frame (33). The first fixed frame (33) is fixedly connected to a second horizontal plate (331) at the end away from the first rotating rod (311). The second horizontal plate (331) has a square groove on the side near the first motor (31). A sliding plate (332) is slidably connected in the square groove. Multiple push rods (3321) are fixedly connected to one side of the sliding plate (332). An inclined surface is opened on the side where the multiple push rods (3321) are close to each other. Wherein: the connecting rod (321) is rotatably connected to one side of the sliding plate (332) at the end away from the first rotating rod (311), and the sliding plate (332) is fixedly connected to the arc-shaped rod (3211) on the side away from the connecting rod (321). The inner wall of the fixed chamber (1) is rotatably connected to a second rotating rod (34), and the outer wall of the second rotating rod (34) is telescopically connected to a buckle block (341). A second turntable (342) is fixedly connected to the outer wall of the middle end of the second rotating rod (34). Multiple array blocks (3421) are fixedly connected to one edge of the second turntable (342), and these array blocks (3421) are arranged in a circular array at the edge of the second turntable (342). A third turntable (343) is fixedly connected to the outer wall of one end of the second rotating rod (34). A fourth turntable (344) is rotatably connected to the end of the second rotating rod (344) away from the third turntable (343). A ratchet groove (3441) is provided on one side of the fourth turntable (344). The ratchet groove (3441) meshes with a latching block (341), and the latching block (341) is located inside the ratchet groove (3441). The inclined surface of the push rod (3321) matches the spacing between the array block (3421). The third turntable (343) and the fourth turntable (344) are both elliptical disks, and one side of the arc rod (3211) matches the outer wall of the fourth turntable (344) with a smaller diameter.

2. The bridge beam alignment laser monitoring device according to claim 1, characterized in that: Multiple crossbars (121) are slidably connected on the second slide rail (12), and the multiple crossbars (121) are fixedly connected to each other by a column (122). A transmission rod (1211) is fixedly connected to the outer wall of the upper crossbar (121).

3. The bridge beam alignment laser monitoring device according to claim 2, characterized in that: The top of the first fixing frame (33) is fixedly connected to a fixing block (35), and the inner side of the fixing block (35) is slidably connected to a rack (351) with a gear groove facing downward. The top of the middle end of the rack (351) is fixedly connected to a fixing plate (352), the top of the fixing plate (352) is fixedly connected to a fixing disk (3521), and the bottom of both sides of the fixing plate (352) is fixedly connected to a limiting member (353). The outer wall of the limiting member (353) is provided with a strip hole (3531).

4. The bridge beam alignment laser monitoring device according to claim 3, characterized in that: A sprocket (361) is provided above the second turntable (342). The sprocket (361) meshes with the array block (3421). A third rotating rod (36) is fixedly connected through the center of the sprocket (361). The end of the third rotating rod (36) is slidably connected in the strip hole (3531). A cam (362) is fixedly connected to one end of the third rotating rod (36). The outer wall of the cam (362) is in contact with the outer wall of the fourth turntable (344).

5. A bridge beam alignment laser monitoring device according to claim 4, characterized in that: The active component (4) includes a second fixed frame (41), which is fixedly connected to the top of the fixed plate (3521). A second motor (411) is fixedly connected to the inner side of the second fixed frame (41). A fixed column (412) is fixedly connected to the top of the second fixed frame (41). A sliding column (42) is rotatably connected to the inner side of the fixed column (412). The output end of the second motor (411) is fixedly connected to the lower end of the sliding column (42). A fourth rotating rod (421) is rotatably connected to the upper end of the sliding column (42).

6. The bridge beam alignment laser monitoring device according to claim 5, characterized in that: One end of the fourth rotating rod (421) is fixedly connected to a bending plate (4211), the laser monitor (2) is fixedly connected to the top of the bending plate (4211), and a toggle rod (4212) is fixedly connected to the outer wall of the fourth rotating rod (421) at the end away from the bending plate (4211). A toggle ball (4213) is fixedly connected to the end of the toggle rod (4212) at the end away from the bending plate (4211).

7. A bridge beam alignment laser monitoring device according to claim 6, characterized in that: A sliding ring (43) is slidably connected to the outer wall of the fixed column (412). The sliding ring (43) is composed of two rings fixedly connected by a connecting column. An inner annular groove (431) is opened on the inner wall of the upper ring of the sliding ring (43). The actuating ball (4213) is located in the inner annular groove (431). An outer annular groove (432) is opened on the outer wall of the lower ring of the sliding ring (43). A protruding column (442) is provided in the outer annular groove (432). A fifth turntable (44) is rotatably connected to the top of the second fixed frame (41). A bent rod (441) is fixedly connected to the outer side of the fifth turntable (44). The bent rod (441) is fixedly connected to the protruding column (442) on the side away from the fifth turntable (44). Wherein: One side of the outer wall of the transmission rod (1211) is in contact with one side of the outer wall of the fifth turntable (44).

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