A bridge arch rib installation monitoring system

Abstract

The present invention relates to a bridge arch rib installation monitoring system, the key points of the technical solution of which are that it comprises a construction platform and a lifting tower, the upper part of the construction platform is provided with a walking track and a positioning vehicle arranged along the length direction of the walking track; a traction and lifting device is arranged on the side of the lifting tower away from the construction platform; the traction and lifting device comprises a traction rope and a retracting and releasing assembly; a limit assembly is arranged on the lifting tower; a height-adjustable jacking device is arranged on the upper part of the positioning vehicle, and a positioning device for clamping and positioning the arch rib is arranged on the upper end of the jacking device; the positioning device comprises a pair of clamping blocks and a clamping drive assembly, and a clamping head rotatably connected to the clamping block is arranged on the clamping block; the bridge arch rib installation monitoring system also comprises a controller; the positioning vehicle, the traction and lifting device, the jacking device and the positioning device are all controlled by the controller; the present invention is not easily affected by the external environment, and can accurately and conveniently monitor the splicing construction of the arch rib segments.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a bridge arch rib installation monitoring system. Background Art

[0002] The arch ribs of large-span arch bridges are usually divided into multiple segments to facilitate processing, manufacturing and assembly. During installation, the arch rib segments are generally lifted and moved horizontally by hoisting. In order to ensure that the arch ribs are well consistent with the design requirements after assembly, a monitoring system needs to be set up during the arch rib splicing and installation construction to ensure the linear accuracy of the arch ribs when the arch rib segments are spliced ​​to prevent safety accidents.

[0003] The existing arch rib installation monitoring system can refer to the Chinese utility model patent document with the authorization announcement number CN206189277U, which discloses a large-segment arch rib lifting measurement system for steel box arch bridges, including an observation prism, a total station and a computer controller; the observation prism is set on the lifting bracket and the arch rib, and the total station is connected to the computer controller; the observation prism is tracked and observed by the total station, and the total station transmits the data to the computer controller in real time. The computer controller calculates the overall linear shape and spatial position of the arch rib, and sends the adjustment command to the arch rib lifting system to control the construction of the large-segment arch rib lifting of the steel box arch bridge.

[0004] The above-mentioned total station is used in conjunction with an observation prism to monitor the splicing installation of the arch ribs. Its monitoring accuracy is easily affected by the external environment, such as foggy days, rainy days, etc. Moreover, when using a total station, data from each monitoring point is usually collected in sequence, and the monitoring time of each monitoring point is difficult to synchronize, which affects the monitoring accuracy. Summary of the invention

[0005] The purpose of the present invention is to provide a bridge arch rib installation monitoring system which is not easily affected by the external environment and can accurately and conveniently monitor the splicing construction of arch rib segments.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A bridge arch rib installation monitoring system, comprising a construction platform and a lifting tower, wherein the upper part of the construction platform is provided with a walking track arranged along its length direction, and a positioning vehicle arranged along the length direction of the walking track is arranged on the walking track; a traction and lifting device is arranged on the side of the lifting tower away from the construction platform; the traction and lifting device comprises a traction rope and a retracting and releasing assembly for reeling in and out the traction rope; a limiting assembly for limiting the position of the traction rope is arranged on the lifting tower;

[0007] The upper part of the positioning vehicle is provided with a height-adjustable lifting device, and the upper end of the lifting device is provided with a positioning device for clamping and positioning the arch rib; the positioning device includes a pair of clamping blocks and a clamping drive assembly for driving the two clamping blocks to move closer to or away from each other, and the clamping blocks are provided with a clamping head rotatably connected to the clamping blocks;

[0008] The bridge arch rib installation monitoring system also includes a controller; the positioning vehicle, the traction and lifting device, the jacking device and the positioning device are all controlled by the controller.

[0009] Through the above technical scheme, when the arch rib segments are spliced ​​and installed, the positioning vehicle is placed at one end of the arch rib segment that needs to be spliced ​​and installed, and a section of the arch rib segment is clamped and positioned by the clamping drive assembly, so that the arch rib segment can rotate around its clamping axis; the other end of the arch rib segment is connected to the traction rope, and the traction rope is supported by the lifting tower, and a certain end of the traction rope is wound and released by the retracting assembly; the positioning trolley walks along the walking track, and then the arch rib segment is moved to the corresponding installation position, and the posture of the arch rib segment is adjusted by the traction of the traction rope and the lifting of the jacking device, so that the arch rib segment can be accurately spliced ​​with other segments; when the arch rib segments are installed by the above method, it is only necessary to accurately control the height of the jacking device and the lifting amount of the traction lifting device, so that the linearity of the arch rib can be accurately controlled, and the construction is accurate and easy to control.

[0010] Preferably, the limiting assembly includes a limiting frame installed on the lifting tower and a limiting wheel rotatably connected to the limiting frame around a horizontal axis, and a limiting groove is provided on the circumference of the limiting wheel.

[0011] Through the above technical solution, the traction rope is supported by the limiting wheel arranged on the lifting tower, and the traction rope is limited by the limiting groove; then the retraction and release line of the traction rope is adjusted by the retraction and release assembly, so that the posture of the arch bridge segment can be pulled more smoothly and well.

[0012] Preferably, an inlet conduit and an outlet conduit for guiding and limiting the traction rope are respectively provided on both sides of the limiting wheel, and the inlet conduit and the outlet conduit are respectively hinged to the limiting frame around a horizontal axis.

[0013] Through the above technical scheme, the traction rope is limited by the inlet duct and the outlet duct, thereby effectively reducing the deflection of the traction rope when the traction rope is wound or released. The inlet duct and the outlet duct are respectively hinged to the limit frame around the horizontal axis, so that the traction rope can be well adapted to the inlet duct and the outlet duct, and mutual friction and interference are not easy to occur.

[0014] Preferably, a pressure detection sensor is provided at the bottom of the limit frame, and the pressure detection sensor is used to detect the pressure value applied by the limit frame and send the detection value to the controller.

[0015] Through the above technical scheme, the limiting wheel serves as a support for the traction rope. A pressure detection sensor is arranged at the bottom of the limiting frame, and then the pressure applied by the limiting frame to the pressure detection sensor is detected by the pressure detection sensor, thereby indirectly analyzing and judging the stress condition of the traction rope. The system is easy to install and detect, and is not affected by the winding and unwinding of the traction rope.

[0016] Preferably, the jacking device includes a plurality of supporting units, and the supporting units include a supporting tower, a lifting hydraulic cylinder vertically fixed to the upper end of the supporting tower, and a lifting platform fixed to the end of the piston rod of the lifting hydraulic cylinder; the supporting tower can be detachably connected to the lifting platform.

[0017] Through the above technical scheme, the jacking device is composed of a plurality of supporting units, and when the arch rib is installed, the number of supporting units is determined according to the height of the arch rib segment to be supported; by connecting and fixing the supporting towers, the supporting units can be assembled conveniently and quickly; the jacking device has a large height adjustment range, and uses a lifting hydraulic cylinder as a supporting power element, and has good supporting force.

[0018] Preferably, a plurality of pairs of oblique support rods are provided on the upper portion of the positioning vehicle, the lower ends of the oblique support rods are hinged to the positioning vehicle, and the upper ends of the oblique support rods are hinged to the supporting tower at the lowermost end of the jacking device.

[0019] Through the above technical solution, by arranging oblique support rods between the positioning vehicle and the supporting tower, and then obliquely supporting the supporting tower through the oblique support rods, the jacking device has good stability.

[0020] Preferably, at least two pairs of positioning ropes are provided on both sides of the lifting tower; the upper ends of the positioning ropes are connected to the lifting tower, the lower ends of the positioning ropes are connected to the foundation, and the positioning ropes are provided with tension sensors for detecting the stress of the positioning ropes.

[0021] Through the above technical scheme, when using the bridge arch rib installation monitoring system for construction monitoring, the lifting tower is inclined by setting the positioning rope, so that the lifting tower has good stability, and by setting a tension sensor on the positioning rope, the stress on each positioning rope is detected by the tension sensor on each positioning rope, thereby limiting the swing state of the supporting tower.

[0022] Preferably, the retractable assembly is a winch.

[0023] Through the above technical solution, the positioning rope is wound and released by a winch, which has a simple structure and high response efficiency.

[0024] Preferably, a tower crane is provided on the top of the lifting tower.

[0025] Through the above technical solution, a tower crane is arranged on the top of the lifting tower, and then the tower crane on the lifting tower is used to lift the arch rib segments and other construction tools, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0027] Figure 1 It is a structural diagram of the monitoring system installed on the bridge arch rib.

[0028] Figure 2 It is the control block diagram of the bridge arch rib installation monitoring system.

[0029] Figure 3 It is a structural schematic diagram of the positioning rope and the tension sensor.

[0030] Figure 4 It is a schematic diagram showing the structure of the limit assembly.

[0031] Figure 5 It is a structural schematic diagram that reflects the positional relationship between the positioning vehicle, the jacking device and the positioning device.

[0032] Figure 6 It is a structural schematic diagram of the support unit.

[0033] Figure 7 It is a structural schematic diagram of a positioning device.

[0034] Among them, 1. construction platform; 11. walking track; 2. lifting tower; 21. tower crane; 22. positioning rope; 3. positioning vehicle; 31. oblique support rod; 4. traction and lifting device; 41. traction rope; 42. winch; 5. jacking device; 51. support unit; 511. support tower; 512. lifting hydraulic cylinder; 513. lifting platform; 6. positioning device; 61. mounting plate; 62. clamping block; 63. clamping head; 64. clamping cylinder; 7. controller; 8. limit assembly; 81. limit frame; 82. limit wheel; 83. inlet duct; 84. outlet duct; 90. tension sensor; 100. pressure detection sensor. DETAILED DESCRIPTION

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings. The same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0036] Example:

[0037] A bridge arch rib installation monitoring system, referring to Figure 1 and Figure 2 , including a construction platform 1, a lifting tower 2, a positioning vehicle 3, a traction and lifting device 4, a jacking device 5, a positioning device 6 and a controller 7. The positioning vehicle 3, the traction and lifting device 4, the jacking device 5 and the positioning device 6 are all controlled by the controller 7. The controller 7 can use an intelligent terminal such as PLC, MCU or PC, and then control the positioning vehicle 3, the traction and lifting device 4, the jacking device 5 and the positioning device 6 according to programming instructions or input instructions. The construction platform 1 is set up in the water as a transfer platform for workers and materials. The lifting tower 2 is usually installed on a foundation near the water and used as a supporting foundation for the traction and lifting device 4. A tower crane 21 is arranged on the top of the lifting tower 2, and the tower crane 21 is used to hoist and move the arch rib segments and other construction tools.

[0038] Reference Figure 1 and Figure 3 At least two pairs of positioning ropes 22 are arranged on both sides of the lifting tower 2; the upper ends of the positioning ropes 22 are connected to the lifting tower 2, and the lower ends of the positioning ropes 22 are connected to the foundation. The positioning ropes 22 are provided with tension sensors 90 for detecting the stress of the positioning ropes 22. The tension sensors 90 can detect the stress of the positioning ropes 22, and then send the detection values ​​to the controller 7. The controller 7 determines the yaw amplitude of the lifting tower 2 according to the detection values ​​of each tension sensor 90. When the external wind force is strong and the yaw amplitude is greater than the set value, in order to ensure the accuracy of the installation construction, the construction should be stopped.

[0039] Reference Figure 1 and Figure 4The traction and lifting device 4 includes a traction rope 41 and a retracting and releasing assembly for reeling and releasing the traction rope 41. The retracting and releasing assembly adopts a winch 42, and the winch 42 controls the reeling and releasing of the traction rope 41. A limiting assembly 8 for limiting the traction rope 41 is provided on the lifting tower 2. The limiting assembly 8 includes a limiting frame 81 installed on the lifting tower 2 and a limiting wheel 82 rotatably connected to the limiting frame 81 around a horizontal axis, and a limiting groove is provided on the circumference of the limiting wheel 82. An inlet conduit 83 and an outlet conduit 84 for guiding and limiting the traction rope 41 are respectively provided on both sides of the limiting wheel 82, and the inlet conduit 83 and the outlet conduit 84 are respectively hinged to the limiting frame 81 around a horizontal axis. The traction rope 41 passes through the inlet conduit 83, is supported by the limiting wheel 82, and then is connected to pass through the outlet conduit 84, and finally connected to the winch 42. When the arch rib segment is installed, the traction rope 41 is connected to the arch rib segment, and the traction rope 41 is reeled in or unreeled by the winch 42 to traction the arch rib segment, thereby cooperating with the jacking device 5 and the positioning device 6 to position the arch rib segment.

[0040] Reference Figure 4 The bottom of the limit frame 81 is provided with a pressure detection sensor 100, which is used to detect the pressure value applied by the limit frame 81 and send the detection value to the controller 7. The limit wheel 82 is used as a support for the traction rope 41. By arranging the pressure detection sensor 100 at the bottom of the limit frame 81, the pressure applied by the limit frame 81 to the pressure detection sensor 100 is detected by the pressure detection sensor 100, and the stress condition on the traction rope 41 is indirectly analyzed and judged. It is easy to install and detect, and is not affected by the winding and unwinding of the traction rope 41.

[0041] Reference Figure 1 and Figure 5 The upper part of the construction platform 1 is provided with a walking track 11 arranged along its length direction, and the wheels at the bottom of the positioning vehicle 3 roll in contact with the walking track 11, so that the positioning vehicle 3 can travel along the length direction of the walking track 11. The positioning vehicle 3 is driven by a servo motor and has a brake assembly, and the servo motor and the brake assembly both respond to the instructions issued by the controller 7. Then, the positioning vehicle 3 is controlled according to the controller 7, and the control vehicle can be accurately moved to the corresponding coordinate position of the walking track 11.

[0042] Reference Figure 5 and Figure 6, the jacking device 5 is installed on the positioning vehicle 3 for use. The positioning device 6 is installed at the uppermost end of the jacking device 5. The jacking device 5 includes a plurality of support units 51, and the support unit 51 includes a support tower 511, a lifting hydraulic cylinder 512 vertically fixed to the upper end of the support tower 511, and a lifting platform 513 fixed to the end of the piston rod of the lifting hydraulic cylinder 512. Both ends of the lower end of the support tower 511 are provided with mounting holes, through which bolts can be connected, so that the support tower 511 can be installed and fixed on the positioning vehicle 3 or the support tower 511 can be fixed on the lifting platform 513. The jacking device 5 adopts a modular structure, and by controlling the number of support units 51, the jacking height of the jacking device 5 can be changed in a wide range, so that the height support requirements of the arch rib segment can be well met.

[0043] A plurality of pairs of oblique support rods 31 are provided on the upper part of the positioning vehicle 3, the lower ends of the oblique support rods 31 are hinged to the positioning vehicle 3, and the upper ends of the oblique support rods 31 are hinged to the support tower 511 at the lower end of the jacking device 5. By obliquely supporting the support tower 511 through the oblique support rods 31, the jacking device 5 has good stability.

[0044] Reference Figure 5 and Figure 7 The positioning device 6 includes a mounting plate 61, a clamping block 62 arranged on the mounting plate 61, and a clamping drive assembly for driving the two clamping blocks 62 to move closer to or farther from each other. The mounting plate 61 is fixed on the lifting platform 513 of the uppermost support unit 51 by bolt connection. The clamping block 62 includes two, and a clamping head 63 rotatably connected to the clamping block 62 is arranged on one side where the clamping blocks 62 are close to each other. The drive assembly includes two clamping cylinders 64 respectively used to drive the clamping blocks 62. The two clamping cylinders 64 are arranged opposite to each other, the cylinder body of the clamping cylinder 64 is fixedly connected to the mounting plate 61, and the piston rod of the clamping cylinder 64 is fixedly connected to the clamping block 62. An indicator light is fixed on the mounting plate 61, and the indicator light is controlled by the controller 7, which is used to indicate the state of the positioning device 6, so as to facilitate the staff below to work together. The rib plate of the arch rib segment using the device for clamping and positioning is usually provided with a slot hole for cooperating with the clamping head 63. When the two clamping blocks 62 clamp one end of the arch rib segment, the clamped arch rib segment can rotate around the axis of the clamping head 63 because the clamping head 63 is rotatably connected to the clamping block 62 .

[0045] The specific implementation principle of this embodiment is:

[0046] When the arch rib segment is installed using the bridge arch rib installation monitoring system, the number of support units 51 of the jacking device 5 is determined according to the installation height of the arch bridge segment. The arch bridge segment to be installed is moved to the top of the positioning vehicle 3 by the tower crane 21, and then the clamping position of one end of the arch bridge segment is clamped by the positioning device 6. The traction rope 41 is connected to the non-clamping end of the arch bridge segment, and the traction rope 41 is controlled by the winch 42, and then the posture of the arch bridge segment is controlled in cooperation with the positioning device 6. The controller 7 sends a command to the positioning vehicle 3, so that the positioning vehicle 3 moves along the length direction of the walking track 11, and then the walking track 11 is moved to the corresponding position coordinates. The controller 7 controls each lifting hydraulic cylinder 512 of the jacking device 5, and then the arch bridge segment is jacked to the corresponding height position. The winch 42 is controlled by the controller 7, and then the arch bridge segment is pulled by the traction rope 41, so that the arch bridge segment is rotated around the central axis of the clamping head 63, and the posture of the arch bridge segment is adjusted, so that the arch bridge segment is accurately positioned at the corresponding splicing installation position.

[0047] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A bridge arch rib installation monitoring system, comprising a construction platform (1) and a lifting tower (2), characterized in that: The upper part of the construction platform (1) is provided with a walking track (11) arranged along the length direction thereof, and the walking track (11) is provided with a positioning vehicle (3) arranged along the length direction of the walking track (11); a traction and lifting device (4) is provided on the side of the lifting tower (2) away from the construction platform (1); the traction and lifting device (4) comprises a traction rope (41) and a retracting and releasing assembly for reeling in and out the traction rope (41); a limiting assembly (8) for limiting the position of the traction rope (41) is provided on the lifting tower (2); The upper part of the positioning vehicle (3) is provided with a height-adjustable lifting device (5), and the upper end of the lifting device (5) is provided with a positioning device (6) for clamping and positioning the arch rib; the positioning device (6) includes a pair of clamping blocks (62) and a clamping drive assembly for driving the two clamping blocks (62) to move closer to or away from each other, and the clamping block (62) is provided with a clamping head (63) rotatably connected to the clamping block (62); when the arch rib segment is installed, the traction rope (41) is connected to one end of the arch rib segment, and the traction rope (41) is wound or released by the winch (42), so as to pull the arch rib segment, thereby cooperating with the lifting device (5) and the positioning device. The device (6) is used to position the arch rib segment; when the two clamping blocks (62) clamp the other end of the arch rib segment, the clamping head (63) is rotatably connected to the clamping block (62), so that the clamped arch rib segment can rotate around the axis of the clamping head (63); the bridge arch rib installation monitoring system also includes a controller (7); the positioning vehicle (3), the traction and lifting device (4), the jacking device (5) and the positioning device (6) are all controlled by the controller (7); the winch (42) is controlled by the controller (7), and the arch bridge segment is then pulled by the traction rope (41), so that the arch bridge segment rotates around the central axis of the clamping head (63), and the posture of the arch bridge segment is adjusted.

2. A bridge arch rib installation monitoring system according to claim 1, characterized in that: The limiting assembly (8) comprises a limiting frame (81) mounted on the lifting tower (2) and a limiting wheel (82) rotatably connected to the limiting frame (81) around a horizontal axis, and a limiting groove is provided on the circumference of the limiting wheel (82).

3. A bridge arch rib installation monitoring system according to claim 2, characterized in that: An inlet conduit (83) and an outlet conduit (84) for guiding and limiting the traction rope (41) are respectively arranged on both sides of the limiting wheel (82); the inlet conduit (83) and the outlet conduit (84) are respectively hinged to the limiting frame (81) around a horizontal axis.

4. A bridge arch rib installation monitoring system according to claim 2, characterized in that: A pressure detection sensor (100) is provided at the bottom of the limiting frame (81), and the pressure detection sensor (100) is used to detect the pressure value applied by the limiting frame (81) and send the detection value to the controller (7).

5. A bridge arch rib installation monitoring system according to claim 1, characterized in that: The lifting device (5) comprises a plurality of support units (51), wherein the support unit (51) comprises a support tower (511), a lifting hydraulic cylinder (512) vertically fixed to the upper end of the support tower (511), and a lifting platform (513) fixed to the end of the piston rod of the lifting hydraulic cylinder (512); the support tower (511) can be detachably connected to the lifting platform (513).

6. A bridge arch rib installation monitoring system according to claim 5, characterized in that: A plurality of pairs of oblique support rods (31) are provided on the upper portion of the positioning vehicle (3), the lower ends of the oblique support rods (31) are hinged to the positioning vehicle (3), and the upper ends of the oblique support rods (31) are hinged to the support tower (511) at the lower end of the jacking device (5).

7. A bridge arch rib installation monitoring system according to claim 1, characterized in that: At least two pairs of positioning ropes (22) are arranged on both sides of the lifting tower (2); the upper ends of the positioning ropes (22) are connected to the lifting tower (2), and the lower ends of the positioning ropes (22) are connected to the foundation; and the positioning ropes (22) are provided with tension sensors (90) for detecting stress of the positioning ropes (22).

8. A bridge arch rib installation monitoring system according to claim 1, characterized in that: The retractable assembly is a winch (42).

9. A bridge arch rib installation monitoring system according to any one of claims 1 to 8, characterized in that: A tower crane (21) is arranged on the top of the lifting tower (2).

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