Road and bridge construction laser measuring device and measuring method thereof

Abstract

The invention belongs to the technical field of laser measurement, particularly relates to a road and bridge construction laser measurement device and a measurement method thereof, and provides the following scheme aiming at the problems that reference is inconvenient in the existing measurement process, and detection is strenuous due to more pore channels. A positioning plate is arranged on the top of the moving trolley in a liftable mode, and an inclined face used in cooperation with the bottom of the box girder is arranged on the bottom wall of the positioning plate and used for positioning the positioning plate. According to the invention, the height of the box girder can be accurately measured through the liftable positioning plate and the extension rod on the mobile vehicle in cooperation with the first infrared range finder; meanwhile, two groups of hole position measuring mechanisms are utilized, the position of the hole channel at the end part of the box girder can be automatically detected, the measuring accuracy and efficiency are improved, meanwhile, a positioning plate and a lifting rod can be flexibly adjusted according to the heights of different box girders and the hole channel position, and the adaptability and the flexibility of the device are enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of laser measurement, and in particular to a road and bridge construction laser measurement device and a measurement method thereof. Background Art

[0002] The quality of grouting construction for the short-beam prestressed tendon holes in prefabricated box girders of bridge projects directly affects the safety and reliability of the bridge, and the location of the holes will change the distribution or state of the prestress. Prefabricated box girders need to be accurately measured before leaving the factory to avoid large deviations. However, existing detection methods usually use detection tools such as tape measures, which are not convenient for reference during the measurement process, and there are many holes, making detection more laborious. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art that it is inconvenient to refer to the benchmark during the measurement process, there are many channels, and the detection is relatively laborious, and a road and bridge construction laser measurement device and a measurement method are proposed.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A road bridge construction laser measurement device comprises a mobile vehicle arranged at one end of a box beam, a positioning plate is arranged on the top of the mobile vehicle in a liftable manner, and a bottom wall of the positioning plate is provided with an inclined surface used in conjunction with the bottom of the box beam for positioning the positioning plate;

[0006] A lifting rod, the lifting rod is arranged on one side of the moving vehicle, two first sliding blocks are slidably provided at the bottom of the lifting rod, a roller abutting against the top of the box beam is fixedly provided at the bottom of the first sliding block, a first infrared rangefinder is fixedly provided on one side of the first sliding block, and extension rods used in conjunction with the first infrared rangefinder are fixedly provided on both sides of the positioning plate for detecting the height of the box beam;

[0007] Two sets of hole position measuring mechanisms are respectively arranged on both sides of the mobile vehicle and used in conjunction with the lifting rod to detect the position of the hole at the end of the box beam;

[0008] A first lifting mechanism is arranged on the moving vehicle and is used to drive the positioning plate to move up and down;

[0009] The second lifting mechanism is arranged on the positioning plate, and is used for driving the lifting rod to move up and down, and adjusting the measurement reference of the first infrared rangefinder.

[0010] In a possible design, the first lifting mechanism includes a first screw rod that passes through and rotates on the top of the moving vehicle, a sliding seat is slidably provided in the moving vehicle, the sliding seat is threadedly sleeved on the first screw rod, a first motor is fixedly provided on the top of the moving vehicle, the output end of the first motor is fixedly connected to the first screw rod, and the positioning plate is rotatably provided on one side of the sliding seat and tilts as the bottom of the box beam tilts.

[0011] In a possible design, two arc holes are opened on one side of the sliding seat, the centers of the two arc holes correspond to the rotation axis of the positioning plate, and sliding columns are arranged in the arc holes, and one side of the two sliding columns is fixedly connected to the positioning plate.

[0012] In a possible design, the second lifting mechanism includes a fixed plate fixed on the top of the positioning plate, a lifting plate is slidably arranged in the fixed plate, a third screw is rotatably provided through the top of the lifting plate, a second motor is fixedly provided on the top of the lifting plate, an output end of the second motor is fixedly connected to the third screw, the third screw is threaded through the fixed plate, and the lifting rod is fixedly provided on one side of the lifting plate.

[0013] In a possible design, the hole position detection mechanism includes a fixed seat fixed on one side of the mobile vehicle, the bottom of the fixed seat is adjustably provided with an adjustment seat, a plurality of spring telescopic rods are rotatably provided in the adjusting seat, the same yield seat is rotatably provided between the plurality of spring telescopic rods, a detection head is slidably provided on one side of the yield seat, one end of the detection head is conical, a plurality of second infrared rangefinders for detecting the position of the yield seat are fixedly provided on the inner wall of the adjustment seat, a second spring is sleeved on the outer wall of the detection head, the two ends of the second spring are respectively fixedly connected to one end of the detection head and one end of the yield seat, a step bar is slidably provided on the top of the adjustment seat and the fixed seat for use in conjunction with the lifting rod, the top of the step bar is stepped and corresponds to the channel, a wedge block used in conjunction with the detection head is fixedly provided on the bottom of the step bar, and the detection head is driven by the descending power of the lifting rod to insert into the channel at one end of the box girder.

[0014] In a possible design, a guide seat is fixedly provided at the bottom of the adjusting seat, a sliding rod that slides through one side of the guide seat and contacts with the wedge block, a push plate that contacts with the detection head is fixedly provided at the other end of the sliding rod, a tension spring is sleeved on the outer wall of the sliding rod, and the two ends of the tension spring are respectively fixedly connected to the mutually close sides of the guide seat and the push plate, a second guide rod is slidably provided through the top of the adjusting seat, the bottom end of the second guide rod is fixedly connected to the wedge block, a third spring is sleeved on the outer wall of the second guide rod, and the two ends of the third spring are respectively fixedly connected to the top of the adjusting seat and the top end of the second guide rod.

[0015] In a possible design, a rectangular hole corresponding to the step bar is provided at the top of the fixed seat, a second sliding block is slidably sleeved on the outer wall of the step bar, a second screw rod is rotatably provided between the fixed seat and the moving vehicle, a third motor is fixedly provided on one side of the adjusting seat, an output end of the third motor is fixedly connected to the second screw rod, the second sliding block is threadedly sleeved on the second screw rod, and is slidably arranged on the top of the fixed seat through a guide rail, a first guide rod is fixedly provided on the top of the adjusting seat, the top of the first guide rod is fixedly connected to the step bar, a waist-shaped hole corresponding to the first guide rod is provided on the top of the adjusting seat, the second sliding block is slidably sleeved on the first guide rod, a first spring is sleeved on the outer wall of the first guide rod, and the two ends of the first spring are respectively fixedly connected to the top of the second sliding block and the top of the first guide rod, a guide frame is fixedly provided on one side of the moving vehicle, the guide frame corresponds to the track of the box beam channel, a limit rod that conflicts with the guide frame is fixedly provided on one side of the adjusting seat, and a limit piece is provided on one side of the second sliding block for limiting the first guide rod.

[0016] In a possible design, the limiting member includes an electric push rod fixedly arranged on one side of the second sliding block, and the output end of the electric push rod extends into the second sliding block and contacts the first guide rod.

[0017] In a possible design, a fixed block corresponding to the step bar is fixedly provided on one side of the lifting rod, a pressure block used in conjunction with the step bar is slidably provided inside the fixed block, a fourth spring is provided inside the fixed block, and two ends of the fourth spring are respectively fixedly connected to one end of the pressure block and an inner wall of one side of the fixed block.

[0018] A measuring method of a road and bridge construction laser measuring device comprises the following steps:

[0019] S1. First, push the mobile vehicle to one end of the box beam where the placement is completed, and start the first motor to drive the positioning plate to move upward so that the positioning plate fits the bottom of the box beam;

[0020] S2, then start the second motor to drive the lifting rod to move downward until the roller contacts the top of the box beam, and then manually push the first sliding block to move, using the positioning plate and the extension rod as a reference, and use the first infrared rangefinder to detect the height of the box beam;

[0021] S3, secondly, start the third motor to adjust the position of the detection head so that the detection head corresponds to the hole to be detected. At this time, the detection head is pushed into the hole during the downward movement of the lifting rod, and the displacement of the giving way seat is detected by using multiple second infrared rangefinders, so as to detect the position of the hole;

[0022] S4. Finally, record it on a computer.

[0023] Beneficial effects: In the present invention, the road and bridge construction laser measuring device can accurately measure the height of the box beam by setting a liftable positioning plate and an extension rod, and cooperate with the first infrared rangefinder to ensure the accuracy requirements during the construction process. At the same time, the lifting rod and the hole position measuring mechanism can quickly detect the position of the hole at the end of the box beam, thereby improving the construction efficiency.

[0024] In the present invention, the laser measurement device for road and bridge construction is provided with an inclined surface at the bottom of the positioning plate for use with the bottom of the box beam, which can be tilted along with the tilt of the bottom of the box beam, thereby ensuring stability and accuracy during the measurement process. In addition, the design of the first lifting mechanism and the second lifting mechanism enables the positioning plate and the lifting rod to be adjusted according to the actual placement height of the box beam, thereby meeting the measurement requirements of box beams of different heights.

[0025] In the present invention, the road and bridge construction laser measurement device, the cooperation of the second infrared rangefinder and the clearance seat in the hole position measurement mechanism can accurately measure the position offset of the hole, and the downward power of the lifting rod is used to drive the detection head to be inserted into the hole, without the need for additional manual operation steps, thereby improving the detection accuracy;

[0026] In the present invention, the road and bridge construction laser measurement device can make the adjustment seat move along the tracks of multiple channels through the coordinated use of the guide frame and the adjustment seat, thereby reducing the complexity of adjustment. After the adjustment is completed, the adjustment seat can be fixed by starting the electric push rod, thereby effectively preventing the adjustment seat from moving during the measurement process.

[0027] In the present invention, the height of the box girder can be accurately measured by means of the liftable positioning plate and the extension rod on the mobile vehicle in cooperation with the first infrared rangefinder; at the same time, by means of two sets of hole position measuring mechanisms, the position of the hole at the end of the box girder can be automatically detected, thereby improving the accuracy and efficiency of the measurement; at the same time, the positioning plate and the lifting rod can be flexibly adjusted according to the height and hole position of different box girders, thereby enhancing the adaptability and flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the three-dimensional structure of a laser measurement device for road and bridge construction proposed by the present invention;

[0029] Figure 2 This is a schematic diagram of the installation position structure of the positioning plate and the detection head of a road and bridge construction laser measurement device proposed by the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the first sliding block and lifting rod of a road and bridge construction laser measurement device proposed by the present invention;

[0031] Figure 4This is a schematic diagram of the structure of an adjustment base and a guide frame of a road and bridge construction laser measurement device proposed by the present invention;

[0032] Figure 5 for Figure 4 Another perspective structural diagram;

[0033] Figure 6 This is a schematic diagram of the installation structure of the adjustment base and the detection head of a road and bridge construction laser measurement device proposed by the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of an electric push rod and a first guide rod of a road and bridge construction laser measurement device proposed by the present invention;

[0035] Figure 8 A schematic diagram of a block structure of a laser measurement device for road and bridge construction proposed by the present invention;

[0036] Fig. 9 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0037] Fig.10 This is a schematic diagram of the installation structure of a fixed plate and a third screw rod of a road and bridge construction laser measurement device proposed by the present invention.

[0038] In the figure: 1, mobile car; 2, sliding seat; 3, positioning plate; 4, extension rod; 5, first screw; 6, guide frame; 7, lifting rod; 8, first motor; 9, lifting plate; 10, fixed plate; 11, second motor; 12, adjustment seat; 13, detection head; 14, first sliding block; 15, roller; 16, first infrared rangefinder; 17, fixed seat; 18, second sliding block; 19, second screw; 20, third motor; 21, step bar; 22, rectangular hole ; 23. Limit rod; 24. Pressure block; 25. First guide rod; 26. First spring; 27. Electric push rod; 28. Yield seat; 29. ​​Spring telescopic rod; 30. Second infrared rangefinder; 31. Second spring; 32. Push plate; 33. Guide seat; 35. Tension spring; 37. Sliding rod; 38. Wedge block; 39. Second guide rod; 40. Third spring; 41. Fixed block; 42. Fourth spring; 43. Arc hole; 44. Sliding column; 45. Third screw. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Example 1: Reference Figure 1-Figure 10A measuring device includes: a mobile vehicle 1 arranged at one end of a box beam. A positioning plate 3 is provided on the top of the mobile vehicle 1 in a liftable manner, and a bottom wall of the positioning plate 3 is provided with an inclined surface used in conjunction with the bottom of the box beam, so as to automatically position the positioning plate 3 according to the bottom of the box beam when the positioning plate 3 moves upward, so as to avoid the positioning plate 3 from being offset.

[0041] A lifting rod 7 is provided on one side of the mobile vehicle 1, and two first sliding blocks 14 are slidably provided at the bottom of the lifting rod 7. Rollers 15 are fixedly provided at the bottom of the two first sliding blocks 14, and the rollers 15 abut against the top of the box beam, so that the first sliding blocks 14 can slide on the top of the box beam. A first infrared rangefinder 16 is fixedly provided on one side of the first sliding block 14 for measuring the distance. Extension rods 4 are fixedly provided on both sides of the positioning plate 3, and the two extension rods 4 are used in conjunction with the first infrared rangefinder 16 to detect the height of the box beam, that is, the distance between the first infrared rangefinder 16 and the extension rods 4.

[0042] A set of hole position measuring mechanisms are respectively arranged on both sides of the mobile vehicle 1. These two sets of hole position measuring mechanisms are used in conjunction with the lifting rod 7 to detect the position of the hole at the end of the box beam. The specific structure of the hole position measuring mechanism includes a fixed seat 17 fixed on one side of the mobile vehicle 1, and an adjustment seat 12 is adjustably arranged at the bottom of the fixed seat 17. A plurality of spring telescopic rods 29 are rotatably arranged in the adjustment seat 12, and the same yielding seat 28 is rotatably arranged between these spring telescopic rods 29. A detection head 13 is slidably arranged on one side of the yielding seat 28, and one end of the detection head 13 is tapered to facilitate insertion into the hole of the box beam. When the hole position is inaccurate, the detection head 13 can be driven to move by the tapered head at one end of the detection head 13, thereby driving the yielding seat 28 to move and stretching the corresponding spring telescopic rod 29 at the same time.

[0043] A plurality of second infrared rangefinders 30 are fixedly mounted on the inner wall of the adjustment seat 12, which are used to detect the position of the clearance seat 28, thereby indirectly measuring the position offset of the channel. A second spring 31 is sleeved on the outer wall of the detection head 13, and the two ends of the second spring 31 are respectively fixedly connected to one end of the detection head 13 and one end of the clearance seat 28, so as to provide a reset force for the detection head 13.

[0044] In addition, the top of the adjustment seat 12 and the fixed seat 17 is provided with a step bar 21 for use with the lifting rod 7, and the top of the step bar 21 is stepped and corresponds to the hole of the box beam. The bottom of the step bar 21 is fixed with a wedge block 38 for use with the detection head 13, and the bottom of the adjustment seat 12 is fixed with a guide seat 33, and one side of the guide seat 33 is provided with a sliding rod 37 that contacts the wedge block 38, and the other end of the sliding rod 37 is fixed with a push plate 32 that contacts the detection head 13, and the outer wall of the sliding rod 37 is provided with a tension spring 35, and the two ends of the tension spring 35 are respectively fixedly connected to the guide seat 33 and the push plate 32 that are close to each other, and are used to drive the sliding rod 37 to reset and move. When the lifting rod 7 is lowered, the step bar 21 will be pushed down, and then the sliding rod 37 will be pushed to move through the wedge block 38, and the other end of the sliding rod 37 will push the detection head 13 to be inserted into the hole through the push plate 32.

[0045] In order to drive the positioning plate 3 to move up and down, a first lifting mechanism is provided on the mobile vehicle 1. The first lifting mechanism includes a first screw rod 5 that is rotatably arranged on the top of the mobile vehicle 1, and a sliding seat 2 is slidably arranged in the mobile vehicle 1, and the sliding seat 2 is threadedly sleeved on the first screw rod 5. A first motor 8 is fixedly arranged on the top of the mobile vehicle 1, and the output end of the first motor 8 is fixedly connected to the first screw rod 5. When the first motor 8 is started, it will drive the first screw rod 5 to rotate, and then drive the sliding seat 2 to move up and down. The positioning plate 3 is rotatably arranged on one side of the sliding seat 2, and tilts with the inclination of the bottom of the box beam. At the same time, two arc holes 43 are opened on one side of the sliding seat 2, and the centers of the two arc holes 43 correspond to the rotation axis of the positioning plate 3. A sliding column 44 is arranged in the arc hole 43, and one side of the two sliding columns 44 is fixedly connected to the positioning plate 3, which can guide and limit the positioning plate 3.

[0046] In order to drive the lifting rod 7 to move up and down and adjust the measurement reference of the first infrared rangefinder 16, a second lifting mechanism is provided on the positioning plate 3. The second lifting mechanism includes a fixed plate 10 fixedly arranged on the top of the positioning plate 3, and a lifting plate 9 is slidably arranged in the fixed plate 10. A third screw 45 is rotatably provided on the top of the lifting plate 9, and a second motor 11 is fixedly arranged on the top of the lifting plate 9. The output end of the second motor 11 is fixedly connected to the third screw 45, and the third screw 45 is threadedly arranged in the fixed plate 10. When the second motor 11 is started, it will drive the third screw 45 to rotate, thereby driving the lifting plate 9 to move up and down. The lifting rod 7 is fixedly arranged on one side of the lifting plate 9 and moves up and down with the lifting plate 9. At the same time, when the positioning plate 3 tilts and rotates, the lifting rod 7 can also be driven to tilt through the lifting plate 9 and the fixed plate 10, so as to ensure that the lifting rod 7 is parallel to the positioning plate 3.

[0047] In order to limit the first guide rod 25 and prevent it from shaking during movement, a limiting member is provided on one side of the second sliding block 18 .

[0048] The present application can be used in the field of bridge measurement, and can also be used in other fields applicable to the present application.

[0049] Example 2: Reference Figure 1-Figure 10 , improved on the basis of Example 1: a road and bridge construction laser measuring device, which is applied to the field of bridge measurement, to provide upward resetting power for the step bar 21, a second guide rod 39 is slidably provided through the top of the adjustment seat 12, the bottom end of the second guide rod 39 is fixedly connected to the wedge block 38, and the outer wall of the second guide rod 39 is sleeved with a third spring 40, and the two ends of the third spring 40 are respectively fixedly connected to the top of the adjustment seat 12 and the top end of the second guide rod 39.

[0050] In order to facilitate the adjustment of the position of the step bar 21 to adapt to the hole detection at different positions, a second screw rod 19 is rotatably provided between the fixed seat 17 and the mobile vehicle 1. A third motor 20 is fixedly provided on one side of the adjustment seat 12, and the output end of the third motor 20 is fixedly connected to the second screw rod 19. A rectangular hole 22 corresponding to the step bar 21 is provided at the top of the fixed seat 17, and a second sliding block 18 is slidably sleeved on the outer wall of the step bar 21. The second sliding block 18 is threadedly sleeved on the second screw rod 19 and slidably provided on the top of the fixed seat 17 through a guide rail. A first guide rod 25 is fixedly provided on the top of the adjustment seat 12, and the top end of the first guide rod 25 is fixedly connected to the step bar 21. By starting the third motor 20, the second screw 19 can be driven to rotate. During the rotation of the second screw 19, the second sliding block 18 can be driven to move, and the adjustment seat 12 can be driven to move through the step bar 21, so as to drive the detection head 13 to move. At the same time, a guide frame 6 is fixedly provided on one side of the mobile vehicle 1. The guide frame 6 corresponds to the track of the box beam channel. A limit rod 23 that conflicts with the guide frame 6 is fixedly provided on one side of the adjustment seat 12. In this way, during the horizontal movement of the adjustment seat 12, the adjustment seat 12 can be driven to tilt and move up and down through the cooperation of the limit rod 23 and the guide frame 6. A limit piece is provided on one side of the second sliding block 18 for limiting the first guide rod 25 so that the position of the adjustment seat 12 can be fixed after the adjustment is completed. And the second sliding block 18 is slidably sleeved on the first guide rod 25 to provide guidance and support for the step bar 21. A first spring 26 is sleeved on the outer wall of the first guide rod 25 , and two ends of the first spring 26 are fixedly connected to the top of the second sliding block 18 and the top of the first guide rod 25 respectively, to provide upward restoring power for the step bar 21 .

[0051] The limiting member includes an electric push rod 27 fixedly arranged on one side of the second sliding block 18, and the output end of the electric push rod 27 extends into the second sliding block 18 and contacts the first guide rod 25. When limiting is required, the electric push rod 27 is started so that the output end thereof pushes the first guide rod 25, thereby limiting the first guide rod 25, and at this time, the position of the adjustment seat 12 will not move.

[0052] In addition, a fixed block 41 is fixedly provided on one side of the lifting rod 7, and a pressure block 24 used in conjunction with the step bar 21 is slidably provided in the fixed block 41. A fourth spring 42 is provided in the fixed block 41, and the two ends of the fourth spring 42 are respectively fixedly connected to one end of the pressure block 24 and the inner wall of one side of the fixed block 41. When the lifting rod 7 descends, it will push the pressure block 24 to move, and then can drive the step bar 21 to move downward. At the same time, when the adjustment seat 12 drives the step bar 21 to move horizontally, it can push the pressure block 24 to move into the fixed block 41 and compress the fourth spring 42. When the step bar 21 and the pressure block 24 are misaligned, the pressure block 24 can be reset and moved under the action of the fourth spring 42, and continue to be used in conjunction with the step bar 21.

[0053] First, the device is powered on, and then the mobile vehicle 1 is pushed to one end of the box beam that has been placed, so that the fixed plate 10 contacts one end of the box beam, and the first motor 8 is started to drive the first screw 5 to rotate. The rotation of the first screw 5 can drive the sliding seat 2 to move upward. During the upward movement of the sliding seat 2, the positioning plate 3 can be driven to move upward, so that the positioning plate 3 fits the bottom of the box beam. When the box beam is placed tilted, the positioning plate 3 will also tilt and rotate on the sliding seat 2. During the rotation of the positioning plate 3, the sliding column 44 can be driven to move in the arc hole 43. During the swinging process, the positioning plate 3 can drive the lifting rod 7 to swing through the fixed plate 10 and the lifting plate 9, so that the lifting rod 7 is always parallel to the positioning plate 3.

[0054] Then, the second motor 11 is started to drive the third screw 45 to rotate. The rotation of the third screw 45 can move downward in the fixed plate 10. The downward movement of the third screw 45 can drive the lifting plate 9 to move downward. The downward movement of the lifting plate 9 can drive the lifting rod 7 to move downward until the roller 15 hits the top of the box beam. Then, the first sliding block 14 is manually pushed to move, with the positioning plate 3 and the extension rod 4 as the reference, and the first infrared rangefinder 16 is started at the same time, so as to detect the distance between the first infrared rangefinder 16 and the extension rod 4, which is the height of the box beam;

[0055] When it is necessary to detect the channel, the third motor 20 is started to drive the second screw 19 to rotate. The rotation of the second screw 19 can drive the second sliding block 18 to move on the fixed seat 17, and drive the step bar 21 and the first guide rod 25 to move, which can drive the adjusting seat 12 to move. During the movement of the adjusting seat 12 left and right, the upper and lower positions of the adjusting detection head 13 can be driven by the limit rod 23 and the guide frame 6. At the same time, during the movement of the adjusting seat 12, the adjusting seat 12 can be supported by the first spring 26 so that the detection head 13 corresponds to the channel to be detected. After the adjustment is completed, the electric push rod 27 is started to extend. During the extension of the electric push rod 27, the output end can be driven to contact the outer wall of the first guide rod 25, and the height of the adjusting seat 12 is fixed again. After the fixing is completed, the detection head 13 is in the standard channel position, and then the second motor 11 is started again to drive the lifting rod 7 to move downward. During the downward movement of the lifting rod 7, the fixed block 41 can be driven to move downward The fixed block 41 moves downward, which can drive the pressing block 24 to move downward. During the downward movement of the pressing block 24, it can contact the step groove at the top of the step bar 21. Continuing to move downward can drive the step bar 21 to move downward. The downward movement of the step bar 21 can drive the wedge block 38 to move downward. The downward movement of the wedge block 38 can push the sliding rod 37 to one side, which can drive the push plate 32 to move toward the detection head 13 and stretch the tension spring 35. When the push plate 32 moves toward the detection head 13, it can push the detection head 13 to move into the channel. Since one end of the detection head 13 is tapered, when the hole position is offset, the detection head 13 can be driven to move during the insertion process. The movement of the detection head 13 can drive the yield seat 28 to move, and push and stretch the corresponding spring telescopic rod 29. At the same time, multiple second infrared rangefinders 30 are started to detect the position of the yield seat 28, and the offset distance is the offset distance of the channel. The above method is used to measure multiple channels in turn.

[0056] Finally, record it on a computer.

[0057] However, as is well known to those skilled in the art, the working principles and wiring methods of the first motor 8, the second motor 11, the first infrared rangefinder 16, the third motor 20, the electric push rod 27 and the second infrared rangefinder 30 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laser measurement device for road and bridge construction, characterized in that: It comprises a moving vehicle (1) arranged at one end of a box beam, the top of the moving vehicle (1) being provided with a positioning plate (3) which can be raised and lowered, the bottom wall of the positioning plate (3) being provided with an inclined surface which cooperates with the bottom of the box beam and is used for positioning the positioning plate (3); A lifting rod (7), the lifting rod (7) is arranged on one side of the moving vehicle (1), two first sliding blocks (14) are slidably provided at the bottom of the lifting rod (7), a roller (15) that contacts the top of the box beam is fixedly provided at the bottom of the first sliding block (14), a first infrared rangefinder (16) is fixedly provided on one side of the first sliding block (14), and extension rods (4) used in conjunction with the first infrared rangefinder (16) are fixedly provided on both sides of the positioning plate (3) for detecting the height of the box beam; Two sets of hole position measuring mechanisms are respectively arranged on both sides of the moving vehicle (1) and are used in conjunction with the lifting rod (7) to detect the position of the hole at the end of the box beam; A first lifting mechanism is arranged on the moving vehicle (1) and is used to drive the positioning plate (3) to move upward and downward; The second lifting mechanism is arranged on the positioning plate (3) and is used to drive the lifting rod (7) to move up and down to adjust the measurement reference of the first infrared rangefinder (16).

2. A road and bridge construction laser measurement device according to claim 1, characterized in that: The first lifting mechanism comprises a first screw rod (5) which is rotatably arranged on the top of the moving vehicle (1); a sliding seat (2) is slidably arranged inside the moving vehicle (1); the sliding seat (2) is threadedly sleeved on the first screw rod (5); a first motor (8) is fixedly arranged on the top of the moving vehicle (1); the output end of the first motor (8) is fixedly connected to the first screw rod (5); the positioning plate (3) is rotatably arranged on one side of the sliding seat (2) and tilts as the bottom of the box beam tilts.

3. A road and bridge construction laser measurement device according to claim 2, characterized in that: Two arc-shaped holes (43) are provided on one side of the sliding seat (2), the centers of the two arc-shaped holes (43) correspond to the rotation axis of the positioning plate (3), and sliding columns (44) are provided in the arc-shaped holes (43), and one side of the two sliding columns (44) is fixedly connected to the positioning plate (3).

4. A road and bridge construction laser measurement device according to claim 1, characterized in that: The second lifting mechanism comprises a fixed plate (10) fixed on the top of the positioning plate (3), a lifting plate (9) is slidably arranged in the fixed plate (10), a third screw (45) is rotatably provided through the top of the lifting plate (9), a second motor (11) is fixedly arranged on the top of the lifting plate (9), an output end of the second motor (11) is fixedly connected to the third screw (45), the third screw (45) is threadedly arranged through the fixed plate (10), and the lifting rod (7) is fixedly arranged on one side of the lifting plate (9).

5. A road and bridge construction laser measurement device according to claim 1, characterized in that: The hole position detection mechanism comprises a fixed seat (17) fixed on one side of the mobile vehicle (1); an adjustment seat (12) is adjustable at the bottom of the fixed seat (17); a plurality of spring telescopic rods (29) are rotatably arranged in the adjustment seat (12); a same yielding seat (28) is rotatably arranged between the plurality of spring telescopic rods (29); a detection head (13) is slidably arranged through one side of the yielding seat (28); one end of the detection head (13) is tapered; a plurality of second infrared rangefinders (30) for detecting the position of the yielding seat (28) are fixedly arranged on the inner wall of the adjustment seat (12); The outer wall of the measuring head (13) is sleeved with a second spring (31), and the two ends of the second spring (31) are respectively fixedly connected to one end of the detecting head (13) and one end of the giving way seat (28). The top of the adjusting seat (12) and the fixing seat (17) is slidably provided with a step bar (21) for use with the lifting rod (7). The top of the step bar (21) is stepped and corresponds to the channel. The bottom of the step bar (21) is fixedly provided with a wedge block (38) for use with the detecting head (13). The descending power of the lifting rod (7) is used to drive the detecting head (13) to be inserted into the channel at one end of the box beam.

6. A road and bridge construction laser measurement device according to claim 5, characterized in that: A guide seat (33) is fixedly provided at the bottom of the adjustment seat (12), a sliding rod (37) that contacts with a wedge block (38) is slidably provided through one side of the guide seat (33), a push plate (32) that contacts with the detection head (13) is fixedly provided at the other end of the sliding rod (37), a tension spring (35) is sleeved on the outer wall of the sliding rod (37), and the two ends of the tension spring (35) are respectively fixedly connected to the mutually close sides of the guide seat (33) and the push plate (32), a second guide rod (39) is slidably provided through the top of the adjustment seat (12), the bottom end of the second guide rod (39) is fixedly connected to the wedge block (38), and a third spring (40) is sleeved on the outer wall of the second guide rod (39), and the two ends of the third spring (40) are respectively fixedly connected to the top of the adjustment seat (12) and the top end of the second guide rod (39).

7. A road and bridge construction laser measurement device according to claim 6, characterized in that: A rectangular hole (22) corresponding to the step bar (21) is opened on the top of the fixed seat (17); a second sliding block (18) is slidably sleeved on the outer wall of the step bar (21); a second screw rod (19) is rotatably provided between the fixed seat (17) and the moving vehicle (1); a third motor (20) is fixedly provided on one side of the adjustment seat (12); an output end of the third motor (20) is fixedly connected to the second screw rod (19); the second sliding block (18) is threadedly sleeved on the second screw rod (19) and slidably arranged on the top of the fixed seat (17) through a guide rail; a first guide rod (25) is fixedly provided on the top of the adjustment seat (12); a top end of the first guide rod (25) is fixedly connected to the step bar (21) The top of the adjusting seat (12) is provided with a waist-shaped hole corresponding to the first guide rod (25); the second sliding block (18) is slidably sleeved on the first guide rod (25); the outer wall of the first guide rod (25) is sleeved with a first spring (26); the two ends of the first spring (26) are respectively fixedly connected to the top of the second sliding block (18) and the top of the first guide rod (25); one side of the moving vehicle (1) is fixedly provided with a guide frame (6); the guide frame (6) corresponds to the track of the box beam channel; one side of the adjusting seat (12) is fixedly provided with a limit rod (23) that contacts the guide frame (6); one side of the second sliding block (18) is provided with a limit piece for limiting the first guide rod (25).

8. A road and bridge construction laser measurement device according to claim 7, characterized in that: The limiting member comprises an electric push rod (27) fixedly arranged on one side of the second sliding block (18), wherein the output end of the electric push rod (27) extends into the second sliding block (18) and contacts the first guide rod (25).

9. A road and bridge construction laser measurement device according to claim 5, characterized in that: A fixed block (41) corresponding to the step bar (21) is fixedly provided on one side of the lifting rod (7), a pressure block (24) used in conjunction with the step bar (21) is slidably provided inside the fixed block (41), a fourth spring (42) is provided inside the fixed block (41), and two ends of the fourth spring (42) are respectively fixedly connected to one end of the pressure block (24) and an inner wall of one side of the fixed block (41).

10. A measuring method for a road and bridge construction laser measuring device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, push the moving vehicle (1) to one end of the box beam that has been placed, and start the first motor (8) to drive the positioning plate (3) to move upward, so that the positioning plate (3) fits the bottom of the box beam; S2, then start the second motor (11) to drive the lifting rod (7) to move downward until the roller (15) contacts the top of the box beam, and then manually push the first sliding block (14) to move, and use the first infrared rangefinder (16) to detect the height of the box beam with the positioning plate (3) and the extension rod (4) as a reference; S3, then starting the third motor (20) to adjust the position of the detection head (13) so that the detection head (13) corresponds to the hole to be detected. At this time, the lifting rod (7) pushes the detection head (13) into the hole during the downward movement, and uses a plurality of second infrared rangefinders (30) to detect the displacement of the yield seat (28), thereby detecting the position of the hole; S4. Finally, record it on a computer.

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