Accurate measurement device for tower column template of cable-stayed bridge

Abstract

The invention provides a cable-stayed bridge tower column formwork accurate measurement device, and relates to the technical field of accurate measurement devices.The cable-stayed bridge tower column formwork accurate measurement device comprises an annular formwork, a main rod is arranged at the edge of the top of the annular formwork, a prism is fixedly installed at the top of the main rod, a level gauge is fixed to the surface of the main rod, and a driving assembly is arranged in the annular formwork; the driving assembly comprises a bottom plate, a motor is fixed to the top of the middle of the bottom plate, a connecting plate is fixed to the output end of the motor, a sliding base is connected to the side, facing the main rod, of the connecting plate, and sliding wheels are installed on the two sides of the bottom of the sliding base and make sliding contact with the inner side surface and the outer side surface of the annular mold plate. The driving assembly drives the main rod to move along the top of the annular template, multi-point measurement is facilitated, the correction assembly can complete horizontal correction work on the main rod by means of the correction rod after the horizontal position of the main rod is initially corrected and when the main rod moves to other measurement point positions subsequently, the main rod is kept not to incline, and the efficiency of multi-point measurement is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of precision measurement devices, and particularly to a precision measurement device for the formwork of a cable-stayed bridge tower column. Background Art

[0002] In bridge construction, since the tower column is the main structure for supporting the bridge and is cast in one go during construction, strict detection is required during the installation and reinforcement of the tower column formwork to ensure that the plane position and verticality of the upper opening of the tower column meet the accuracy requirements. The method for measuring the tower column formwork is as follows: Stand the prism centering rod on the edge of the formwork, and obtain the elevation value of the top of the formwork by measuring the three-dimensional coordinate values of the prism. Then, based on the design drawing and the measured elevation value, the three-dimensional coordinate values of the top of the formwork are deduced inversely. By comparing the design coordinates with the measured coordinates, the position of the formwork is adjusted. However, this measurement method is inefficient, and the centering error of the prism rod is large, and the centering error will be accumulated into the positioning error, affecting the positioning accuracy of the tower column formwork.

[0003] In the prior art, a prism rod is installed on the top of the formwork and the prism rod is horizontally corrected to reduce the error during measurement. However, for the measurement of the tower column formwork, multi-point measurement is usually required. During this process, if the position of the prism rod is adjusted within the manual range and horizontally corrected, it will take a lot of time, resulting in low measurement efficiency. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a precision measurement device for the formwork of a cable-stayed bridge tower column to solve the problems raised in the above background art. The structure of the present invention is novel. The driving component drives the main rod to move along the top of the annular formwork, facilitating multi-point measurement. After the leveling component initially levels the horizontal position of the main rod, when the main rod moves to other measurement points subsequently, the leveling rod can complete the work of horizontally correcting it, keeping the main rod from tilting and improving the efficiency of multi-point measurement.

[0005] To achieve the above object, the present invention is realized by the following technical solutions: A precise measurement device for the tower column formwork of a cable-stayed bridge, including an annular formwork. A main rod is provided at the top edge of the annular formwork, and a prism is fixedly installed at the top of the main rod. A level is fixed on the surface of the main rod. A driving component is arranged inside the annular formwork. The driving component includes a bottom plate. A motor is fixedly installed at the middle top of the bottom plate, and a connecting plate is fixed to the output end of the motor. A sliding seat is connected to the side of the connecting plate facing the main rod. Two pulleys are installed on both sides of the bottom of the sliding seat, and the pulleys are in sliding contact with the inner and outer surfaces of the annular formwork. A calibration component is arranged at the top of the driving component. The calibration component includes a calibration rod. The calibration rod is installed at the top of the output end of the motor, and a first connecting frame is fixed to the top of the calibration rod. A second connecting frame is sleeved at a position parallel to the first connecting frame on the main rod. Bolts are inserted into both sides of the first connecting frame and the second connecting frame. A limiting component is arranged outside the annular formwork. The limiting component includes a vertical rod. A horizontal plate is slidably inserted into the top of the vertical rod, and the horizontal plate is connected and installed with the main rod.

[0006] Furthermore, the driving component further includes a first electric push rod. The first electric push rods are fixedly installed at both ends inside the bottom plate, and an extrusion plate is fixed to the extended end of the first electric push rod. The extrusion plate is in extrusion contact with the inner wall of the annular formwork.

[0007] Furthermore, two groups of connecting components are arranged between the connecting plate and the sliding seat. The connecting frame includes a sliding cylinder. Sliding cylinders are fixedly installed on the adjacent surfaces of the connecting plate and the sliding seat, and sliding balls are slidably installed inside the sliding cylinders through springs. A tapered opening is fixed to the outer end of the sliding cylinder. A connecting rod is fixed between the two sliding balls through the tapered opening.

[0008] Furthermore, the calibration component further includes an inclined plate. The inclined plate is slidably installed inside the first connecting frame. A second electric push rod is fixed to the top of the first connecting frame, and the extended end of the second electric push rod is fixedly connected to the top of the inclined plate. An inclined block is slidably connected to the bottom inclined surface of the inclined plate.

[0009] Furthermore, a plug rod is fixed to the bottom of the inclined block. A guiding plate is fixed to the calibration rod corresponding to the position of the plug rod, and the plug rod slidably passes through the guiding plate. A first spring is sleeved on the surface of the plug rod, and both ends of the first spring are fixedly connected to the inclined block and the guiding plate.

[0010] Furthermore, sliding grooves are opened on both sides of the second connecting frame, and a bidirectional electric push rod is fixed inside the sliding grooves. A first clamping frame is fixed to the extended end of one side of the bidirectional electric push rod, and a second clamping frame is fixed to the extended end of the other side of the bidirectional electric push rod. The first clamping frame and the second clamping frame clamp the surface of the main rod.

[0011] Further, a sliding sleeve is sleeved on the top of the main rod in the second connection frame. A second spring is fixed to the top of the sliding sleeve, and the other end of the second spring is fixed to the upper end of the main rod.

[0012] Further, a first universal shaft is installed on the top of the sliding seat, the bottom of the main rod is installed on the first universal shaft, a second universal shaft is installed at the position of the connecting plate at the bottom of the calibration rod, and the bottom of the calibration rod is installed inside the second universal shaft.

[0013] Further, the limiting component further includes a slide rail. The bottom of the vertical rod is provided with a slide rail. The slide rail is fixed on the outer surface of the top of the annular template through a sheet metal part. A slide plate is slidably connected inside the slide rail, and the bottom of the vertical rod is fixedly connected to the slide plate.

[0014] Further, an insertion frame is fixed to the top of the vertical rod, and the cross plate is slidably inserted inside the insertion frame.

[0015] Advantages of the present invention:

[0016] 1. In the present invention, the positions of the vertical rod and the slide rail are both outside the rotation path of the main rod and the driving component, so they will not interfere with the movement of the main rod. During the process of the main rod moving along the top of the annular template with the driving component to select a point, because the cross plate is connected to the main rod and the cross plate is limited by the insertion frame, the movement of the main rod will drive the slide plate at the bottom of the vertical rod to slide along the slide rail, and the cross plate will slide back and forth along the insertion frame to maintain the connection with the main rod. Moreover, the main rod is restricted by the cross plate at this time, and the surface of the prism always faces one direction, which is convenient for measuring with a total station at a distance. The movement of the main rod will not cause the total station to be unable to capture the position of the prism, thereby affecting the measurement of coordinate data.

[0017] 2. In the present invention, the main rod is horizontally calibrated by the level on the main rod. Subsequently, the first connection frame and the second connection frame are connected by bolts, and the position of the calibration rod will also be automatically calibrated. The second electric push rod drives the inclined plate to slide along the first connection frame and squeezes the inclined block. The insertion rod at the bottom of the inclined block passes through the guide plate and squeezes the connecting plate in contact, so that the calibration rod will not change.

[0018] 3. When rotating to change the point in the present invention, the bidirectional electric push rod drives the first clamping frame and the second clamping frame to separate from the main rod. At this time, the main rod is not restricted and moves along the top of the annular template together with the sliding seat. The calibration rod also rotates with the output end of the motor. The second connection frame always wraps around the outside of the main rod. After moving to the next position, the bidirectional electric push rod moves the first clamping frame and the second clamping frame back to the main rod. Because the top of the annular template has certain unevenness during the movement, the horizontal state of the main rod will change. At this time, through the guiding and limiting of the calibration rod, the first clamping frame and the second clamping frame re-correct the main rod, saving the time of manual correction and avoiding measurement errors at the same time.

[0019] 4. In the present invention, the bottom plate is placed at the center inside the annular template. The first electric push rod drives the extrusion plate to extrude the inner wall of the annular template, thereby fixedly installing the device. The sliding seat is buckled at the edge of the annular template. The rotation of the motor-driven connecting plate drives the sliding seat and the main rod to move around the top edge of the annular template. During this process, the displacement change generated by the sliding seat maintains the connection with the connecting plate through the connecting piece. When the sliding seat generates an up-and-down or left-and-right angular change, the sliding ball slides along the sliding cylinder, and two sliding balls are connected by a connecting rod to maintain the connection of the two sets of connecting pieces, as well as the connecting plate and the sliding seat. Furthermore, the driving assembly can continuously drive the main rod to move and change points.

[0020] 5. Compared with the prior art, in the present invention, the driving assembly drives the main rod to move along the top of the annular template, facilitating multi-point measurement. After the calibration assembly initially calibrates the horizontal position of the main rod, when the main rod moves to other measurement points subsequently, it relies on the calibration rod to complete the horizontal calibration work, keeping the main rod from tilting and improving the efficiency of multi-point measurement. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of a precise measurement device for a cable-stayed bridge tower column formwork according to the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the limit assembly of a precise measurement device for a cable-stayed bridge tower column formwork according to the present invention;

[0023] Figure 3 It is a schematic diagram of the connection between the limit assembly and the main rod of a precise measurement device for a cable-stayed bridge tower column formwork according to the present invention;

[0024] Figure 4 It is a schematic diagram of the connection between the driving assembly and the calibration assembly of a precise measurement device for a cable-stayed bridge tower column formwork according to the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the driving assembly of a precise measurement device for a cable-stayed bridge tower column formwork according to the present invention;

[0026] Figure 6 It is a schematic diagram of one side of the calibration assembly of a precise measurement device for a cable-stayed bridge tower column formwork according to the present invention;

[0027] Figure 7 It is a schematic diagram of the other side of the calibration assembly of a precise measurement device for a cable-stayed bridge tower column formwork according to the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the connecting piece of a precise measurement device for a cable-stayed bridge tower column formwork according to the present invention.

[0029] In the figure: 1. Ring-shaped template; 2. Main rod; 21. Prism; 22. Level; 3. Driving assembly; 31. Base plate; 32. First electric push rod; 33. Extrusion plate; 34. Motor; 35. Connecting plate; 36. Connecting piece; 361. Sliding cylinder; 362. Sliding ball; 363. Tapered opening; 364. Connecting rod; 37. Sliding seat; 38. Pulley; 39. First universal shaft; 310. Second universal shaft; 4. Calibration assembly; 41. Calibration rod; 42. First connecting frame; 43. Inclined plate; 44. Second electric push rod; 45. Inclined block; 46. Insertion rod; 47. Guide plate; 48. First spring; 49. Second connecting frame; 410. Bolt; 411. Chute; 412. Bidirectional electric push rod; 413. First clamping frame; 414. Second clamping frame; 415. Sliding sleeve; 416. Second spring; 5. Limiting assembly; 51. Slide rail; 52. Slide plate; 53. Vertical rod; 54. Insertion frame; 55. Cross plate. Detailed implementation manners

[0030] To make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0031] Please refer to Figures 1 to 8, the present invention provides a technical solution: a precise measurement device for the tower column formwork of a cable-stayed bridge, including an annular formwork 1. A main rod 2 is provided at the top edge of the annular formwork 1, and a prism 21 is fixedly installed at the top of the main rod 2. A level 22 is fixed on the surface of the main rod 2. A driving component 3 is arranged inside the annular formwork 1. The driving component 3 includes a bottom plate 31. A motor 34 is fixedly installed at the middle top of the bottom plate 31, and a connecting plate 35 is fixed at the output end of the motor 34. A sliding seat 37 is connected to the side of the connecting plate 35 facing the main rod 2. Two sides of the bottom of the sliding seat 37 are provided with pulleys 38, and the pulleys 38 are in sliding contact with the inner and outer surfaces of the annular formwork 1. A calibration component 4 is arranged at the top of the driving component 3. The calibration component 4 includes a calibration rod 41. The calibration rod 41 is installed at the top of the output end of the motor 34, and a first connecting frame 42 is fixed at the top of the calibration rod 41. A second connecting frame 49 is sleeved at a position of the main rod 2 parallel to the first connecting frame 42. Bolts 410 are inserted into both sides of the first connecting frame 42 and the second connecting frame 49. A limiting component 5 is arranged outside the annular formwork 1. The limiting component 5 includes a vertical rod 53. A horizontal plate 55 is slidably inserted into the top of the vertical rod 53, and the horizontal plate 55 is connected and installed with the main rod 2. In this application, the annular formwork 1 is the formwork of the annular tower column. When using the device, the device is installed on the topmost annular formwork 1 through the driving component 3. The main rod 2 is adjusted horizontally through the calibration component 4. Then, the driving component 3 drives the main rod 2 to move around the edge of the annular formwork 1 to different positions. The limiting component 5 keeps the position of the prism 21 always corresponding to the total station at a distance. The main rod 2 is repeatedly corrected through the calibration component 4 to reduce errors.

[0032] In this embodiment, the driving assembly 3 further includes a first electric push rod 32. The two ends inside the bottom plate 31 are fixed with the first electric push rod 32, and the extending end of the first electric push rod 32 is fixed with a pressing plate 33. The pressing plate 33 is in pressing contact with the inner wall of the annular template 1. There are two groups of connecting members 36 between the connecting plate 35 and the sliding seat 37. The connecting frame includes a sliding cylinder 361. The sliding cylinders 361 are fixed on the adjacent surfaces of the connecting plate 35 and the sliding seat 37. A sliding ball 362 is slidably installed inside the sliding cylinder 361 through a spring. A tapered opening 363 is fixed at the outer end of the sliding cylinder 361. A connecting rod 364 is fixed between the two sliding balls 362 through the tapered opening 363. A first universal shaft 39 is installed on the top of the sliding seat 37. The bottom of the main rod 2 is installed on the first universal shaft 39. A second universal shaft 310 is installed at the position of the connecting plate 35 where it is located at the bottom of the calibration rod 41. The bottom of the calibration rod 41 is installed inside the second universal shaft 310. Place the bottom plate 31 at the center inside the annular template 1. The first electric push rod 32 drives the pressing plate 33 to press against the inner wall of the annular template 1 to fixedly install the device. The sliding seat 37 is buckled at the edge of the annular template 1. The motor 34 drives the rotation of the connecting plate 35 to drive the sliding seat 37 and the main rod 2 to move around the top edge of the annular template 1. During this process, the displacement change generated by the sliding seat 37 maintains the connection with the connecting plate 35 through the connecting member 36. When the sliding seat 37 generates an up-and-down or left-and-right angular change, the sliding ball 362 slides along the sliding cylinder 361. The two sliding balls 362 are connected through the connecting rod 364 to maintain the connection of the two groups of connecting members 36 and the connecting plate 35 and the sliding seat 37. Furthermore, the driving assembly 3 can continuously drive the main rod 2 to move and change points.

[0033] In this embodiment, the calibration assembly 4 further includes an inclined plate 43. The inclined plate 43 is slidably installed inside the first connection frame 42. A second electric push rod 44 is fixed to the top of the first connection frame 42, and the extending end of the second electric push rod 44 is fixedly connected to the top of the inclined plate 43. An inclined block 45 is slidably connected to the bottom inclined surface of the inclined plate 43. A plug rod 46 is fixed to the bottom of the inclined block 45. A guide plate 47 is fixed to the calibration rod 41 at the position corresponding to the plug rod 46, and the plug rod 46 slidably passes through the guide plate 47. A first spring 48 is sleeved on the surface of the plug rod 46, and both ends of the first spring 48 are fixedly connected to the inclined block 45 and the guide plate 47. Chute grooves 411 are formed on both sides of the second connection frame 49, and a bidirectional electric push rod 412 is fixed inside the chute grooves 411. A first clamping frame 413 is fixed to the extending end on one side of the bidirectional electric push rod 412, and a second clamping frame 414 is fixed to the extending end on the other side of the bidirectional electric push rod 412. The first clamping frame 413 and the second clamping frame 414 clamp the surface of the main rod 2. A sliding sleeve 415 is slidably sleeved on the top of the main rod 2 where the main rod 2 is located in the second connection frame 49. A second spring 416 is fixed to the top of the sliding sleeve 415, and the other end of the second spring 416 is fixed to the upper end of the main rod 2. In the initial state, the first connection frame 42 and the second connection frame 49 are not connected. The bidirectional electric push rod 412 drives the first clamping frame 413 and the second clamping frame 414 to clamp the main rod 2. The operator horizontally calibrates the main rod 2 through the level gauge 22 on the main rod 2. Subsequently, the first connection frame 42 and the second connection frame 49 are connected by bolts 410, and the position of the calibration rod 41 will also be automatically calibrated. The second electric push rod 44 drives the inclined plate 43 to slide along the first connection frame 42, extruding the inclined block 45. The plug rod 46 at the bottom of the inclined block 45 passes through the guide plate 47 to make contact and extrusion with the connecting plate 35, keeping the calibration rod 41 unchanged. When changing the point of rotation, the bidirectional electric push rod 412 drives the first clamping frame 413 and the second clamping frame 414 to separate from the main rod 2. At this time, the main rod 2 is not restricted and moves along the top of the annular template 1 together with the sliding seat 37. The calibration rod 41 also rotates along with the output end of the motor 34. The second connection frame 49 always wraps around the outside of the main rod 2. After moving to the next position, the bidirectional electric push rod 412 moves the first clamping frame 413 and the second clamping frame 414 back towards the main rod 2. Because there are certain unevennesses on the top of the annular template 1 during the movement process, the horizontal state of the main rod 2 will change. At this time, through the guiding and limiting of the calibration rod 41, the first clamping frame 413 and the second clamping frame 414 re-correct the main rod 2, saving the time of manual calibration and avoiding measurement errors at the same time.

[0034] In this embodiment, the limiting component 5 further includes a slide rail 51. The bottom of the vertical rod 53 is provided with the slide rail 51. The slide rail 51 is fixed on the outer surface of the top of the annular template 1 through a sheet metal part. A slide plate 52 is slidably connected inside the slide rail 51. The bottom of the vertical rod 53 is fixedly connected to the slide plate 52. The top of the vertical rod 53 is fixed with an insertion frame 54, and the cross plate 55 is slidably inserted inside the insertion frame 54. The positions where the vertical rod 53 and the slide rail 51 are arranged are outside the rotation paths of the main rod 2 and the driving component 3, so they will not interfere with the movement of the main rod 2. During the process of the main rod 2 moving along the top of the annular template 1 to select a point with the driving component 3, because the cross plate 55 is connected to the main rod 2 and the cross plate 55 is limited by the insertion frame 54, therefore, the movement of the main rod 2 will drive the slide plate 52 at the bottom of the vertical rod 53 to slide along the slide rail 51, and the cross plate 55 will slide back and forth along the insertion frame 54 to maintain the connection with the main rod 2. Moreover, the main rod 2 is restricted by the cross plate 55 at this time, and the surface of the prism 21 always faces one direction, which is convenient for the total station to be set up at a distance for measurement. The movement of the main rod 2 will not cause the total station to be unable to capture the position of the prism 21, thereby affecting the measurement of coordinate data.

[0035] When using the device, place the bottom plate 31 at the center inside the annular template 1. The first electric push rod 32 drives the extrusion plate 33 to extrude the inner wall of the annular template 1 to fixedly install the device. The sliding seat 37 is buckled at the edge of the annular template 1. The motor 34 drives the rotation of the connecting plate 35 to drive the sliding seat 37 and the main rod 2 to move around the top edge of the annular template 1. During this process, the displacement change generated by the sliding seat 37 maintains the connection with the connecting plate 35 through the connecting piece 36. The sliding seat 37 generates angular changes up and down or left and right. The sliding ball 362 slides along the sliding cylinder 361. The two sliding balls 362 are connected by the connecting rod 364 to maintain the connection of the two groups of connecting pieces 36, as well as the connecting plate 35 and the sliding seat 37. Thus, the driving assembly 3 can continuously drive the main rod 2 to move and change points. The movement of the main rod 2 will drive the sliding plate 52 at the bottom of the vertical rod 53 to slide along the slide rail 51, and the cross plate 55 slides back and forth along the insertion frame 54 to maintain the connection with the main rod 2. Moreover, the main rod 2 is restricted by the cross plate 55 at this time, and the surface of the prism 21 always faces one direction. When setting up the total station for measurement at a distance, the movement of the main rod 2 will not cause the total station to be unable to capture the position of the prism 21, thereby affecting the measurement of coordinate data. In the initial state, the first connection frame 42 and the second connection frame 49 are not connected. The bidirectional electric push rod 412 drives the first clamping frame 413 and the second clamping frame 414 to clamp on the main rod 2. Manually level the main rod 2 through the level 22 on the main rod 2, and then connect the first connection frame 42 and the second connection frame 49 through the bolt 410. The position of the correction rod 41 will also be automatically corrected. The second electric push rod 44 drives the inclined plate 43 to slide along the first connection frame 42 to extrude the inclined block 45. The insertion rod 46 at the bottom of the inclined block 45 passes through the guide plate 47 to squeeze and contact the connecting plate 35 to keep the correction rod 41 unchanged. When rotating and changing points, the bidirectional electric push rod 412 drives the first clamping frame 413 and the second clamping frame 414 to separate from the main rod 2. At this time, the main rod 2 is not restricted and moves along the top of the annular template 1 together with the sliding seat 37. The correction rod 41 also rotates with the output end of the motor 34. The second connection frame 49 always wraps around the outside of the main rod 2. After moving to the next point, the bidirectional electric push rod 412 moves the first clamping frame 413 and the second clamping frame 414 back towards the main rod 2. Because there are certain unevennesses on the top of the annular template 1 during the movement, the horizontal state of the main rod 2 will change. At this time, through the guiding and limiting of the correction rod 41, the first clamping frame 413 and the second clamping frame 414 re-correct the main rod 2, saving the time of manual correction and avoiding measurement errors at the same time.

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

[0037] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cable-stayed bridge tower template precision measurement device, comprising a ring template (1), characterized in that: A main rod (2) is provided at the top edge of the annular template (1), and a prism (21) is fixedly mounted on the top of the main rod (2). A level (22) is fixed on the surface of the main rod (2). A driving assembly (3) is provided inside the annular template (1). The driving assembly (3) comprises a bottom plate (31). A motor (34) is fixed at the middle top of the bottom plate (31), and a connecting plate (35) is fixed at the output end of the motor (34). A sliding seat (37) is connected to the connecting plate (35) on one side facing the main rod (2). Pulleys (38) are installed on both sides of the bottom of the sliding seat (37), and the pulleys (38) are in sliding contact with the inner and outer surfaces of the annular template (1). The driving assembly (3) 3) A correction component (4) is provided on the top, the correction component (4) includes a correction rod (41), the correction rod (41) is installed on the top of the output end of the motor (34), and a first connecting frame (42) is fixed on the top of the correction rod (41), the main rod (2) is sleeved with a second connecting frame (49) at a position parallel to the first connecting frame (42), bolts (410) are inserted on both sides of the first connecting frame (42) and the second connecting frame (49), and a limit assembly (5) is provided on the outer side of the annular template (1), the limit assembly (5) includes a vertical rod (53), a horizontal plate (55) is slidably inserted on the top of the vertical rod (53), and the horizontal plate (55) is connected and installed with the main rod (2).

2. The cable-stayed bridge tower formwork precision measurement device according to claim 1, characterized in that: The driving assembly (3) further comprises a first electric push rod (32), the first electric push rod (32) being fixed at both ends of the interior of the base plate (31), and an extrusion plate (33) being fixed at the extended end of the first electric push rod (32), the extrusion plate (33) being in extrusion contact with the inner wall of the annular template (1).

3. The cable-stayed bridge tower formwork precision measurement device according to claim 2, characterized in that: Two groups of connecting parts (36) are arranged between the connecting plate (35) and the sliding seat (37), and the connecting frame includes a sliding cylinder (361). The sliding cylinder (361) is fixed on the adjacent surfaces of the connecting plate (35) and the sliding seat (37), and a sliding ball (362) is slidably installed inside the sliding cylinder (361) through a spring, and a cone mouth (363) is fixed on the outer end of the sliding cylinder (361), and a connecting rod (364) is fixed between the two sliding balls (362) through the cone mouth (363).

4. The cable-stayed bridge tower formwork precision measurement device according to claim 1, characterized in that: The correction assembly (4) also includes an inclined plate (43), the inclined plate (43) is slidably mounted inside the first connection frame (42), a second electric push rod (44) is fixed to the top of the first connection frame (42), and the extended end of the second electric push rod (44) is fixedly connected to the top of the inclined plate (43), and an inclined block (45) is slidably connected to the inclined surface at the bottom of the inclined plate (43).

5. The cable-stayed bridge tower formwork precision measurement device according to claim 4, characterized in that: A plug rod (46) is fixed at the bottom of the inclined block (45), a guide plate (47) is fixed at a position of the correction rod (41) corresponding to the plug rod (46), and the plug rod (46) slides through the guide plate (47), a first spring (48) is sleeved on the surface of the plug rod (46), and two ends of the first spring (48) are fixedly connected to the inclined block (45) and the guide plate (47).

6. The cable-stayed bridge tower formwork precision measurement device according to claim 5, characterized in that: Slide grooves (411) are provided on both sides of the second connecting frame (49), and a bidirectional electric push rod (412) is fixed inside the slide groove (411), a first clamping frame (413) is fixed to an extended end on one side of the bidirectional electric push rod (412), and a second clamping frame (414) is fixed to an extended end on the other side of the bidirectional electric push rod (412), and the first clamping frame (413) and the second clamping frame (414) are clamped on the surface of the main rod (2).

7. The cable-stayed bridge tower formwork precision measurement device according to claim 6, characterized in that: The main rod (2) is located at the top of the second connecting frame (49) and is slidably sleeved with a sliding sleeve (415), a second spring (416) is fixed to the top of the sliding sleeve (415), and the other end of the second spring (416) is fixed to the upper end of the main rod (2).

8. The cable-stayed bridge tower formwork precision measurement device according to claim 2, characterized in that: A first cardan shaft (39) is installed on the top of the slide seat (37), the bottom of the main rod (2) is installed on the first cardan shaft (39), a second cardan shaft (310) is installed at the position of the connecting plate (35) located at the bottom of the correction rod (41), and the bottom of the correction rod (41) is installed inside the second cardan shaft (310).

9. The cable-stayed bridge tower formwork precision measurement device according to claim 1, characterized in that: The limiting assembly (5) further comprises a slide rail (51), the bottom of the vertical rod (53) is provided with the slide rail (51), the slide rail (51) is fixed to the top outer surface of the annular template (1) via a sheet metal part, a slide plate (52) is slidably connected inside the slide rail (51), and the bottom of the vertical rod (53) is fixedly connected to the slide plate (52).

10. The cable-stayed bridge tower formwork precision measurement device according to claim 9, characterized in that: An insertion frame (54) is fixed on the top of the vertical rod (53), and the horizontal plate (55) is slidably inserted into the insertion frame (54).

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