Bridge erecting machine via hole distance laser detection equipment

Abstract

The invention discloses bridge girder erection machine via hole distance laser detection equipment, and relates to the field of bridge girder erection machines, the bridge girder erection machine via hole distance laser detection equipment comprises a bridge pier and a main beam, the main beam is arranged above the bridge pier, an adjusting mechanism, a first detection mechanism and a second detection mechanism are arranged on the main beam in a front-back symmetry mode, and the adjusting mechanism is fixed on the main beam; and a first detection mechanism is mounted on the adjusting mechanism. According to the bridge girder erection machine via hole distance laser detection equipment, the first detection mechanism is adopted, the width of a bridge pier can be detected, the accuracy of measured data can be guaranteed in cooperation with the effect of the limiting mechanism, and therefore the installation position of the supporting base can be conveniently determined, and specifically, the initial measurement position can be determined through a contact sensor; the distance between the first laser range finder and the first protective cover is adjusted through cooperation with the adjusting mechanism, so that the bridge pier width detection effect is achieved, after the limiting mechanism is separated from the bridge pier, the measurement effect is stopped, and the accuracy of detection data is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of bridge erection machines, in particular to a bridge erection machine through-hole distance laser detection device. Background Art

[0002] The bridge erection machine is a kind of equipment that assists in the installation of beams. It is mainly used to place prefabricated beams on prefabricated bridge piers. The bridge erection machine passing hole refers to the process of moving the end of the bridge erection machine from one pier to another during the bridge construction process. This process is a key link in bridge construction and is related to the construction progress, bridge quality and construction safety. At present, when the bridge-building machine passes through a hole, it mainly relies on manual distance measurement under the pier through visual inspection or measuring instruments, which makes it difficult to ensure the accuracy of the detection. In particular, when the two piers are not in a straight line, the detection data gap is large, resulting in uneven force on the piers and certain safety hazards. To this end, in response to the above problems, a bridge-building machine through-hole distance laser detection equipment is designed to better meet actual use needs. Summary of the invention

[0003] The purpose of the present invention is to provide a bridge erection machine through-hole distance laser detection device to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge erection machine through-hole distance laser detection equipment, comprising a bridge pier and a main beam, a main beam is arranged above the bridge pier, an adjustment mechanism, a first detection mechanism and a second detection mechanism are symmetrically arranged on the main beam, the adjustment mechanism is fixed on the main beam, a first detection mechanism is installed on the adjustment mechanism, the first detection mechanism and the second detection mechanism are connected to each other, and a limiting mechanism is installed on both the second detection mechanism and the first detection mechanism, the first detection mechanism comprises a mounting frame, a first laser rangefinder, a movable plate, a contact sensor, a first protective cover, a square rod and a first spring, a first laser rangefinder is fixed on the mounting frame, and a limiting mechanism is fixed at the lower end of the first laser rangefinder, and a mounting frame is arranged below the mounting frame. There is a movable plate, on which a contact sensor is fixed, and the end of the contact sensor is flush with the central axis of the support base, and a first protective cover is also fixed on the movable plate, and the first protective cover and the first laser rangefinder are nested in connection, and the movable plate and the square rod are slidably connected, and the square rod is fixed on a mounting frame, and the square rod and one end of the first spring are fixed to each other, and the other end of the first spring is fixed on the mounting frame. When the contact sensor contacts the pier to achieve initial position limitation, the mounting frame and the first laser rangefinder are driven to move by the adjustment mechanism to measure the width of the pier, and during the measurement process, when the limit mechanism is separated from the pier, the width L of the pier is obtained, and then the second detection mechanism is cooperated to detect the distance between the main beam and the front and rear of the pier.

[0005] Preferably, a connecting frame is fixed to the upper end surface of the main beam, and hydraulic support rods are symmetrically fixed to the front and rear ends of the lower end surface of the connecting frame, and the output end of the hydraulic support rod is fixed on the support base. Through the above structure, stable support can be provided for the main beam after passing through the hole, thereby ensuring the stability of the device.

[0006] Preferably, the adjustment mechanism includes a fixed plate, a motor, a first threaded rod, a connecting block, a guide rod, a mounting plate and a hydraulic rod. The fixed plate is fixed on the main beam, and the motor is fixed on the fixed plate, and the output end of the motor is fixed with the first threaded rod, and the first threaded rod bearing is connected to the fixed plate, and the first threaded rod is connected to the connecting block through a thread. Through the action of the motor and the first threaded rod, a basic guarantee can be provided for the position adjustment of the connecting block and the mounting frame, thereby providing a basic guarantee for realizing the width measurement of the bridge pier.

[0007] Preferably, the connecting block is slidably connected to the guide rod fixed on the fixed plate, and a mounting plate is fixed to the lower end of the connecting block, and hydraulic rods are symmetrically fixed to the lower end of the mounting plate, and the output end of the hydraulic rod is fixed to the mounting frame. Through the action of the hydraulic rod, the height of the mounting frame can be adjusted to ensure the normal progress of the detection.

[0008] Preferably, the second detection mechanism includes a fixed frame, a second threaded rod, a gear, a rack, a movable block, a fixed rod, a second laser rangefinder and a second protective cover. The fixed frame is fixed on the mounting frame, and the second threaded rod is connected to a bearing on the fixed frame, and a gear is fixed on the second threaded rod, and the gear and the rack are meshed with each other. Through the meshing transmission action between the gear and the rack, a basic guarantee can be provided for the front and rear position adjustment of the second laser rangefinder, thereby ensuring the normal operation of the device.

[0009] Preferably, the rack is slidably connected to the mounting frame, and the rack is fixedly connected to the movable plate. When the rack moves, the stability of the rack movement can be ensured by the sliding guiding effect between the rack and the mounting frame.

[0010] Preferably, the second threaded rod is connected to the movable block via a thread, and the movable block is slidably connected to the fixed rod, and the fixed rod is fixed on the fixed frame. When the movable block moves, the sliding guiding effect between the movable block and the fixed rod can ensure the stability of the movement of the movable block.

[0011] Preferably, a second laser rangefinder is fixed on the movable block, a limiting mechanism is fixed on the lower end of the second laser rangefinder, and the second laser rangefinder is nestedly connected to the second protective cover, while the second protective cover is fixed on the mounting frame.

[0012] Preferably, the limiting mechanism includes a cylinder, a pressure sensor, a second spring, a sliding rod and a ball. The cylinder is fixedly connected to the second laser rangefinder, and a pressure sensor is fixed inside the cylinder, and a second spring is fixed between the pressure sensor and the sliding rod. Through the above structure, limiting can be achieved when the device is performing detection, thereby ensuring the accuracy of the detection data.

[0013] Preferably, the slide rod and the cylinder are slidably connected, and a ball is installed at the lower end of the slide rod, and the ball contacts the bridge pier and can roll. During the movement of the detection device, the friction between the slide rod and the bridge pier can be reduced through the rolling action between the ball and the bridge pier, thereby ensuring the normal operation of the device.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The bridge erection machine through-hole distance laser detection equipment adopts the first detection mechanism to realize the detection of the pier width. In conjunction with the limit mechanism, the accuracy of the measurement data can be ensured, so that the installation position of the support base can be conveniently determined. Specifically, the initial measurement position can be determined by the contact sensor, and the distance between the first laser rangefinder and the first protective cover can be adjusted in conjunction with the adjustment mechanism, so as to realize the detection of the pier width. When the limit mechanism is separated from the pier, the measurement function is stopped to ensure the accuracy of the detection data. 2. The bridge-building machine through-hole distance laser detection equipment adopts a linked second detection mechanism, which can realize the distance between the front and rear ends of the pier and the main beam, so as to adjust the installation position of the support base later. Specifically, the rack is moved by moving the movable plate, and the transmission action between the rack and the gear is coordinated to move the second laser rangefinder, thereby realizing the distance detection between the front and rear ends of the pier and the main beam, so as to determine the installation position of the support base later. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention from a front view; Figure 2 It is a schematic diagram of the overall structure of the device of the present invention from a side view; Figure 3 It is a bottom-up three-dimensional structural schematic diagram of the adjusting mechanism, the first detection mechanism and the second detection mechanism of the present invention; Figure 4 It is a front view three-dimensional structural schematic diagram of the working state of the first detection mechanism and the second detection mechanism of the present invention; Figure 5 It is a schematic diagram of a side-view stereoscopic structure of the first detection mechanism and the second detection mechanism of the present invention; Figure 6 This is a bottom-up three-dimensional structural schematic diagram of the limiting mechanism of the present invention; Figure 7 It is a schematic diagram of the front cross-sectional three-dimensional structure of the limiting mechanism of the present invention.

[0016] In the figure: 1, bridge pier; 2, main beam; 201, connecting frame; 202, hydraulic support rod; 203, supporting base; 3, adjusting mechanism; 301, fixing plate; 302, motor; 303, first threaded rod; 304, connecting block; 305, guide rod; 306, mounting plate; 307, hydraulic rod; 4, first detection mechanism; 401, mounting frame; 402, first laser rangefinder; 403, movable plate; 404, contact sensor; 405, first protective cover; 406, square rod; 407, first spring; 5, second detection mechanism; 501, fixed frame; 502, second threaded rod; 503, gear; 504, rack; 505, movable block; 506, fixed rod; 507, second laser rangefinder; 508, second protective cover; 6, limit mechanism; 601, cylinder; 602, pressure sensor; 603, second spring; 604, slide rod; 605, ball bearing. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 7The present invention provides a technical solution: a bridge erection machine through-hole distance laser detection equipment, including a bridge pier 1 and a main beam 2, the main beam 2 is arranged above the bridge pier 1, and an adjustment mechanism 3, a first detection mechanism 4 and a second detection mechanism 5 are symmetrically arranged on the main beam 2, the adjustment mechanism 3 is fixed on the main beam 2, the first detection mechanism 4 is installed on the adjustment mechanism 3, the first detection mechanism 4 and the second detection mechanism 5 are connected to each other, and the second detection mechanism 5 and the first detection mechanism 4 are both installed with a limiting mechanism 6, the first detection mechanism 4 includes a mounting frame 401, a first laser rangefinder 402, a movable plate 403, a contact sensor 404, a first protective cover 405, a square rod 406 and a first spring 407, the first laser rangefinder 402 is fixed on the mounting frame 401, and the limiting mechanism 6 is fixed at the lower end of the first laser rangefinder 402, a movable plate 403 is arranged below the mounting frame 401, and the movable plate 403 A contact sensor 404 is fixed on it, and the end of the contact sensor 404 is flush with the central axis of the support base 203. A first protective cover 405 is also fixed on the movable plate 403. The first protective cover 405 and the first laser rangefinder 402 are nested in connection. The movable plate 403 and the square rod 406 are slidably connected. The square rod 406 is fixed on the mounting frame 401. The square rod 406 and one end of the first spring 407 are fixed to each other, and the other end of the first spring 407 is fixed to the mounting frame 401. When the contact sensor 404 contacts the pier 1 to achieve the initial position limitation, the adjustment mechanism 3 drives the mounting frame 401 and the first laser rangefinder 402 to move to measure the width of the pier 1. During the measurement process, when the limiting mechanism 6 is separated from the pier 1, the width L of the pier 1 is obtained, and then the second detection mechanism 5 is used to detect the distance between the main beam 2 and the front and rear of the pier 1.

[0019] The adjusting mechanism 3 includes a fixing plate 301, a motor 302, a first threaded rod 303, a connecting block 304, a guide rod 305, a mounting plate 306 and a hydraulic rod 307. The fixing plate 301 is fixed on the main beam 2, and the motor 302 is fixed on the fixing plate 301, and the output end of the motor 302 is fixed with the first threaded rod 303, and the first threaded rod 303 is connected to the fixing plate 301 by a bearing, and the first threaded rod 303 is connected to the connecting block 304 by a thread; the connecting block 304 and the guide rod 305 fixed on the fixing plate 301 are slidably connected, and the lower end of the connecting block 304 is fixed with the mounting plate 306, and the mounting plate 306 is fixed to the lower end of the connecting block 304. A hydraulic rod 307 is symmetrically fixed to the lower end of the mounting plate 306, and the output end of the hydraulic rod 307 is fixed to the mounting frame 401; the limiting mechanism 6 includes a cylinder 601, a pressure sensor 602, a second spring 603, a slide bar 604 and a ball 605, the cylinder 601 is fixedly connected to the second laser rangefinder 507, the pressure sensor 602 is fixed inside the cylinder 601, and the second spring 603 is fixed between the pressure sensor 602 and the slide bar 604; the slide bar 604 is slidably connected to the cylinder 601, and a ball 605 is installed at the lower end of the slide bar 604, and the ball 605 contacts the bridge pier 1 and can roll; When using the bridge erection machine through-hole distance laser detection equipment, if Figure 1-Figure 7As shown, firstly, the main beam 2 is moved closer to the pier 1 through the driving mechanism, and the hydraulic rod 307 is extended so that the contact sensor 404 is lower than the upper end surface of the pier 1. When the contact sensor 404 contacts the pier 1 during the process of the main beam 2 approaching the pier 1, the driving mechanism stops the main beam 2 from approaching the pier 1. At this time, the initial measurement position is determined, and then the hydraulic rod 307 is controlled to extend. When the ball 605 contacts the pier 1, the slide bar 604 is forced to slide, so that the second spring 603 is forced to contract, and the pressure sensor 602 detects the pressure. When the pressure sensor 602 is under pressure, the data is transmitted to the control background. When the pressure data reaches the preset value (10N), the hydraulic rod 307 stops extending, and the motor 302 is started to drive the first threaded rod 303 to rotate, and the threaded connection between the first threaded rod 303 and the connecting block 304 and the connection between the connecting block 304 and the guide rod 305 are matched. The sliding guide function causes the connecting block 304, the mounting plate 306 and the mounting frame 401 to move to the left. At this time, the contact sensor 404 contacts the pier 1 to achieve position limiting, so that the movable plate 403 moves to the right relative to the mounting frame 401, thereby increasing the distance between the first laser rangefinder 402 and the first protective cover 405. The distance between the first laser rangefinder 402 and the first protective cover 405 is measured by the first laser rangefinder 402, so that the width of the pier 1 can be detected. When the mounting frame 401 moves, the position limiting mechanism 6 below the first laser rangefinder 402 is synchronously driven to move. When the ball 605 is separated from the pier 1, the sliding rod 604 is reset under the elastic action of the second spring 603, so that the pressure sensor 602 no longer detects pressure. At this time, the distance L1 between the first laser rangefinder 402 and the first protective cover 405 is the width of the pier 1. The second detection mechanism 5 includes a fixed frame 501, a second threaded rod 502, a gear 503, a rack 504, a movable block 505, a fixed rod 506, a second laser rangefinder 507 and a second protective cover 508. The fixed frame 501 is fixed on the mounting frame 401, and the second threaded rod 502 is connected to the bearing on the fixed frame 501, and the gear 503 is fixed on the second threaded rod 502, and the gear 503 and the rack 504 are meshed with each other; the rack 504 and the mounting frame 401 are slidably connected, and the rack 50 4 is fixedly connected to the movable plate 403; the second threaded rod 502 is connected to the movable block 505 by threads, and the movable block 505 is slidably connected to the fixed rod 506, and the fixed rod 506 is fixed to the fixed frame 501; a second laser rangefinder 507 is fixed to the movable block 505, and a limiting mechanism 6 is fixed to the lower end of the second laser rangefinder 507, and the second laser rangefinder 507 is nested with the second protective cover 508, and the second protective cover 508 is fixed to the mounting frame 401; During the testing process, Figure 1-Figure 7As shown, when the movable plate 403 moves to the right relative to the mounting frame 401, the rack 504 moves relative to the gear 503, and the transmission action between the gear 503 and the rack 504 causes the second threaded rod 502 to rotate, and the threaded connection action between the second threaded rod 502 and the movable block 505 and the sliding connection action between the movable block 505 and the fixed rod 506 cause the movable block 505 to slide stably, thereby driving the second laser rangefinder 507 and the limiting mechanism 6 below the second laser rangefinder 507 to move, and by detecting the distance between the second laser rangefinder 507 and the second protective cover 508, the front and rear ends of the pier 1 and the main beam 2 can be measured. The distance between the front and rear ends is detected. According to the above principle, when the ball 605 on the limit mechanism 6 below the second laser rangefinder 507 is separated from the pier 1, the measurement data is obtained. At this time, the distance between the second laser rangefinder 507 on the front side and the second protective cover 508 is the distance L2 between the front end of the pier 1 and the front end of the main beam 2, and the distance between the second laser rangefinder 507 on the rear side and the second protective cover 508 is the distance L3 between the rear end of the pier 1 and the rear end of the main beam 2. When L2>L3, it indicates that the main beam 2 is biased backward relative to the pier 1. When L2<L3, it indicates that the main beam 2 is biased forward relative to the pier 1. When L2=L3, it indicates that the main beam 2 is in the middle of the pier 1. A connecting frame 201 is fixed to the upper end surface of the main beam 2, and a hydraulic support rod 202 is symmetrically fixed to the lower end surface of the connecting frame 201, and the output end of the hydraulic support rod 202 is fixed to the support base 203; According to the above principle, the position of the main beam 2 can be adjusted by the driving mechanism to ensure the installation position of the main beam 2 and the pier 1. After the adjustment is completed, the support base 203 can be brought into contact with the pier 1 to achieve support by controlling the extension of the hydraulic support rod 202, thereby effectively avoiding deviations in the installation position of the main beam 2 and ensuring construction safety. This is the working principle of the bridge erection machine through-hole distance laser detection equipment.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge erection machine through-hole distance laser detection device, comprising a bridge pier (1) and a main beam (2), wherein the main beam (2) is arranged above the bridge pier (1), and is characterized in that: The main beam (2) is symmetrically provided with an adjustment mechanism (3), a first detection mechanism (4) and a second detection mechanism (5); the adjustment mechanism (3) is fixed on the main beam (2); the first detection mechanism (4) is installed on the adjustment mechanism (3); the first detection mechanism (4) and the second detection mechanism (5) are connected to each other; the second detection mechanism (5) and the first detection mechanism (4) are both installed with a limit mechanism (6); the first detection mechanism (4) comprises a mounting frame (401), a first laser rangefinder (402), a movable plate (403), a contact sensor (404), a first protective cover (405), a square rod (406) and a first spring (407); the first laser rangefinder (402) is fixed on the mounting frame (401); the limit mechanism (6) is fixed at the lower end of the first laser rangefinder (402); the mounting frame (401) is provided with a first detection mechanism (402); A movable plate (403) is arranged below the frame (401), a contact sensor (404) is fixed on the movable plate (403), and the end of the contact sensor (404) is flush with the central axis of the support base (203), and a first protective cover (405) is also fixed on the movable plate (403), and the first protective cover (405) and the first laser rangefinder (402) are nested and connected. When the contact sensor (404) contacts the pier (1) to achieve initial position limitation, the adjustment mechanism (3) drives the mounting frame (401) and the first laser rangefinder (402) to move, thereby measuring the width of the pier (1). During the measurement process, when the limit mechanism (6) is separated from the pier (1), the width L of the pier (1) is obtained, and then the second detection mechanism (5) is used to detect the distance between the main beam (2) and the pier (1) in front and behind.

2. A bridge erection machine through-hole distance laser detection device according to claim 1, characterized in that: A connecting frame (201) is fixed to the upper end surface of the main beam (2), and hydraulic support rods (202) are symmetrically fixed to the lower end surface of the connecting frame (201) in the front and rear directions, and the output ends of the hydraulic support rods (202) are fixed to the support base (203).

3. A bridge erection machine through-hole distance laser detection device according to claim 1, characterized in that: The adjustment mechanism (3) comprises a fixing plate (301), a motor (302), a first threaded rod (303), a connecting block (304), a guide rod (305), a mounting plate (306) and a hydraulic rod (307); the fixing plate (301) is fixed on the main beam (2); the motor (302) is fixed on the fixing plate (301); the output end of the motor (302) is fixed with the first threaded rod (303); a bearing of the first threaded rod (303) is connected to the fixing plate (301); and the first threaded rod (303) is connected to the connecting block (304) via a thread.

4. A bridge erection machine through-hole distance laser detection device according to claim 3, characterized in that: The connecting block (304) is slidably connected to a guide rod (305) fixed on the fixing plate (301), a mounting plate (306) is fixed at the lower end of the connecting block (304), and hydraulic rods (307) are symmetrically fixed at the lower end of the mounting plate (306), while the output end of the hydraulic rod (307) is fixed on the mounting frame (401).

5. The laser detection device for the through-hole distance of a bridge erection machine according to claim 1 is characterized in that: The second detection mechanism (5) comprises a fixed frame (501), a second threaded rod (502), a gear (503), a rack (504), a movable block (505), a fixed rod (506), a second laser rangefinder (507) and a second protective cover (508); the fixed frame (501) is fixed on the mounting frame (401), the second threaded rod (502) is connected to a bearing on the fixed frame (501), the second threaded rod (502) is fixed with a gear (503), and the gear (503) and the rack (504) are meshed with each other.

6. A bridge erection machine through-hole distance laser detection device according to claim 5, characterized in that: The rack (504) and the mounting frame (401) are slidably connected, and the rack (504) and the movable plate (403) are fixedly connected.

7. The bridge erection machine through-hole distance laser detection device according to claim 5, characterized in that: The second threaded rod (502) is connected to the movable block (505) via a thread, and the movable block (505) is slidably connected to the fixed rod (506), and the fixed rod (506) is fixed on the fixed frame (501).

8. The laser detection device for the through-hole distance of a bridge erection machine according to claim 5 is characterized in that: A second laser rangefinder (507) is fixed on the movable block (505), a limiting mechanism (6) is fixed on the lower end of the second laser rangefinder (507), and the second laser rangefinder (507) and the second protective cover (508) are nested and connected, while the second protective cover (508) is fixed on the mounting frame (401).

9. The bridge erection machine through-hole distance laser detection device according to claim 1, characterized in that: The limiting mechanism (6) comprises a cylinder (601), a pressure sensor (602), a second spring (603), a sliding rod (604) and a ball (605); the cylinder (601) and the second laser rangefinder (507) are fixedly connected, the pressure sensor (602) is fixed inside the cylinder (601), and the second spring (603) is fixed between the pressure sensor (602) and the sliding rod (604); the sliding rod (604) and the cylinder (601) are slidably connected, and a ball (605) is installed at the lower end of the sliding rod (604), and the ball (605) contacts the bridge pier (1) and can roll.

10. A bridge erection machine through-hole distance laser detection device according to claim 9, characterized in that: The movable plate (403) and the square rod (406) are slidably connected, the square rod (406) is fixed on the mounting frame (401), the square rod (406) and one end of the first spring (407) are fixed to each other, and the other end of the first spring (407) is fixed on the mounting frame (401).

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