Laser monitoring device fixed on synchronous lifting of multiple steel strands

Abstract

The utility model discloses a laser monitoring device fixed on synchronous lifting of multiple steel strands. Comprising a laser emitting device used for emitting laser beams, installed on a steel strand fixing device and capable of horizontally adjusting the positions of the laser beams; the steel plate device is mounted on the steel strand fixing device and is used for allowing the laser beam to pass through; the observation plate device with scales is mounted on the steel strand fixing device and used for receiving laser beam projection and observing the position of the laser beam; one end of the steel strand adjustable fixing device locks the steel strand, the other end of the steel strand adjustable fixing device is a fixing panel, and four sets of telescopic double screws and one set of ball head screws are connected and fixed in the middle of the fixing panel. And a plurality of steel strands for lifting. The utility model aims to solve the problems of low precision, poor night visibility, discontinuous monitoring and complex operation in the monitoring technology of difficulty in fixing and adjusting a monitoring device on a plurality of vertical steel strands and multipoint synchronous lifting of the steel strands.

Description

TECHNICAL FIELD

[0001] The utility model relates to the construction technology field of building structure engineering, specifically relates to a laser monitoring device fixed in the synchronous lifting of multiple steel strands, especially applicable to the construction environment of low night visibility. The utility model discloses the combination of laser technology and mechanical structure, realizes the high-precision real-time monitoring under the insufficient light condition, and is applicable to large steel structure installation engineering projects. BACKGROUND

[0002] In complex building construction, part of the main structure is often split and assembled on the ground and then lifted to the air for assembly construction. Due to the heavy weight and large size of the hoisted structure, multiple lifting points are required to ensure the stability of the building during lifting, and each lifting point needs to use multiple steel strands for lifting. During the lifting process of these structures, all steel strands are required to be uniformly stressed and synchronously lifted to ensure the smooth lifting of the structure and avoid tilting, deformation, and even falling and other dangerous situations. However, the traditional use of steel strands in the synchronous lifting process has many problems and challenges.

[0003] During the multi-point synchronous lifting process, due to uneven load distribution, mechanical property differences, and external environmental factors, the lifting speed of the steel strands is often inconsistent, causing the structure to tilt or twist and deform. To ensure construction safety, the synchronous speed of each lifting point must be strictly controlled.

[0004] The traditional synchronous lifting monitoring method mainly relies on the connection of the numerical control lifting system to the upper double-clamping center hydraulic jack of the lifting point, controls the lifting speed of the clamped steel strand through the oil supply pressure, and analyzes the displacement and displacement difference of the steel strand of each lifting point. Due to the failure or transmission error of some lifting point sensors in this device, the operator may misjudge and cause hoisting safety risks, so other synchronous monitoring methods need to be provided for assistance. The auxiliary monitoring method often pastes observation targets on the side of the steel strand and structure connection anchor, and needs to stand still for 15 minutes to carry out total station instrument observation of the horizontal elevation every 1m of structure lifting, to ensure that the lifting point is horizontal before entering the next hoisting work. This auxiliary method belongs to intermittent static observation and cannot monitor the continuous changes during lifting, and at the same time, there are also invisible problems at night or under limited visibility conditions, reducing the monitoring accuracy.

[0005] Therefore, there is still a lack of a device in the prior art that is simple in structure, low in cost, and capable of accurately monitoring the synchronous lifting state of the steel strand under low visibility conditions. UTILITY MODEL CONTENTS

[0006] Therefore, in order to solve the above problems, the utility model provides a kind of laser monitoring device fixed in the synchronous lifting of multiple steel strands.The utility model aims at solving the problems of low precision, poor visibility at night, intermittent monitoring and complex operation in the fixing and adjusting of monitoring device positioning on multiple vertical steel strands and the synchronous lifting monitoring technology of multiple-point steel strands, and provides a kind of device for fixing and adjusting on multiple vertical steel strands, which can quickly, accurately and continuously monitor the synchronous lifting state of multiple groups of steel strand lifting points under low visibility conditions, to improve the convenience, safety and efficiency of construction, and reduce the risk of construction.

[0007] The utility model is realized, construct a kind of laser monitoring device fixed in the synchronous lifting of multiple steel strands, it is characterized in that;

[0008] It comprises: laser emitting device (1): for emitting laser beam, install on steel strand fixing device (4), can adjust the position of laser beam level;

[0009] Steel plate device (2) with round hole: install on steel strand fixing device (4), for laser beam passes through, hole diameter is greater than the diameter of laser beam 6mm;

[0010] Observation plate device (3) with scale: install on steel strand fixing device (4), for receiving laser beam projection and observing its position;

[0011] Steel strand fixing device (4) and the steel strand (5) for lifting: steel strand fixing device (4) one end locks the steel strand (5), the other end is connected steel plate (401), respectively by 4 groups of telescopic double screw rod and 1 group of ball head screw rod connection fixed.

[0012] According to the utility model discloses a kind of laser monitoring device fixed in the synchronous lifting of multiple steel strands, it is characterized in that;Laser emitting device (1) includes;

[0013] L-shaped steel plate (101): adopt bolt fixed in steel strand adjustable fixing device, long edge plate opens long slot, for adjusting the positioning of laser device level;

[0014] Rubber clamp block (102): laser emitting device is clamped by bolt;

[0015] Laser emitter (103): visible laser beam emitting equipment, with waterproof housing and independent power supply;

[0016] Fixing bolt A (104): for fixing rubber clamp block, L-shaped steel plate and visible laser beam emitting equipment.

[0017] According to the utility model discloses a kind of laser monitoring device fixed in the synchronous lifting of multiple steel strands, it is characterized in that;Steel plate device (2) with round hole includes;

[0018] T-shaped fixed steel plate A (201): fixed on the steel strand adjustable fixing device by bolts, the long edge plate is provided with a long strip-shaped hole, and the long strip-shaped hole is used for adjusting the position of the steel plate with a round hole in the horizontal direction;

[0019] The steel plate with a round hole (202) is provided with a precisely processed round hole in the center, and the diameter of the hole is greater than the diameter of the laser beam by 6mm, and the hole is used for passing the laser beam, and vertical long strip-shaped bolt holes are formed in the four corners of the plate, and the vertical long strip-shaped bolt holes are used for adjusting the position of the steel plate with a round hole in the vertical direction;

[0020] The fixed bolt B (203) is used for fixing the steel plate with a round hole on the T-shaped steel plate;

[0021] The laser monitoring device fixed on the multiple steel strand synchronous lifting device, characterized in that the scale observation plate device (3) comprises;

[0022] T-shaped fixed steel plate B (301): fixed on the steel strand adjustable fixing device by bolts, the long edge plate is provided with a long strip-shaped hole, and the long strip-shaped hole is used for adjusting the position of the scale observation plate in the horizontal direction;

[0023] The scale observation plate (302) is provided with precise scale lines and a fluorescent coating on the surface, and is used for observing the position of the laser beam, and vertical long strip-shaped bolt holes are formed in the four corners of the plate, and the vertical long strip-shaped bolt holes are used for adjusting the position of the scale observation plate in the vertical direction;

[0024] The fixed bolt C (303) is used for fixing the scale observation plate on the T-shaped steel plate;

[0025] The observation scale line is a precise scale line (304), which is visible at night and is used for accurately measuring the displacement of the laser point.

[0026] The laser monitoring device fixed on the multiple steel strand synchronous lifting device, characterized in that the steel strand fixing device (4) comprises;

[0027] The connecting steel plate (401) is used for connecting various functional modules, and two horizontal long strip-shaped bolt holes are arranged on the upper and lower surfaces of the plate;

[0028] The hole ear piece A (402) is welded to the four corners of the connecting steel plate (401);

[0029] The rubber block wrapped around the ball head (403) is pasted on the center of the connecting steel plate (401);

[0030] The cylindrical iron sheet buckle (404) is used for being fixed on the steel strand, and the inner surface is provided with a convex anti-skid pattern;

[0031] The hole ear piece B (405) is welded to the cylindrical iron sheet buckle (404);

[0032] Cylindrical iron sheet buckle fastening bolt (406): used for tightening the clamping sheet, ensuring clamping and fixing with the steel strand;

[0033] Threaded connecting sheet A (407): cooperates with the adjustable sleeve (409) to adjust the distance and angle of the cylindrical iron sheet buckle (404) and the connecting steel plate (401);

[0034] Threaded connecting sheet B (408): cooperates with the adjustable sleeve (409) to adjust the distance and angle of the cylindrical iron sheet buckle and the connecting steel plate;

[0035] Adjustable sleeve (409): connects the two sides of the threaded connecting sheet B (408) and adjusts the distance of the two sides of the threaded connecting sheet B (408) by rotating;

[0036] Fixing bolt D (410): used for fixing the threaded connecting sheet B (408) and the ear on the connecting plate;

[0037] Fixing bolt F (411): used for fixing the threaded connecting sheet B (408) and the ear on the cylindrical iron sheet buckle;

[0038] U-shaped buckle (412): used for fixing the U-shaped buckle on the steel strand;

[0039] Buckle steel plate (413): the steel plate is provided with two holes, facilitating the threaded bolt of the U-shaped buckle (412) to pass through;

[0040] Ball head screw rod (414): welded in the middle of the buckle steel plate (413);

[0041] Fastening bolt A (415): used for fastening the U-shaped buckle (412) and the buckle steel plate (413);

[0042] Fastening bolt B (416): used for fastening the L-shaped fixed steel plate and the T-shaped fixed steel plate;

[0043] Hole ear plate (417): welded on the connecting steel plate (401);

[0044] Plumb line (418): hung on the hole ear plate (417);

[0045] Horizontal scale (419): marked on the connecting steel plate (401).

[0046] The utility model relates to a kind of laser monitoring devices fixed in multiple steel strand synchronous lifting, it is characterized by;Steel strand (5) includes: with the U-shaped buckle connection lifting steel strand A (501);

[0047] With the cylindrical iron sheet buckle connection lifting steel strand B (502);

[0048] Lifting steel strand C (503) buckled with a cylindrical iron sheet.

[0049] The utility model discloses a laser monitoring device fixed in the synchronous lifting of multiple steel strands, characterized in that the device is installed and implemented as follows:

[0050] First step: preparation stage before installation

[0051] Before installing the monitoring device, the construction site should be fully surveyed first to confirm the arrangement of the steel strands (5), the ambient light conditions and other factors that may affect the installation. At the same time, all components are checked to ensure that the laser emitter (1) has sufficient power, the scale board (3) has intact fluorescent coating, and the fixing device components are intact.

[0052] Second step: selection of steel strands and installation of fixing device

[0053] (I) Installation of fixing device for middle steel strand (501)

[0054] (1) Determine the parallel planes of the three groups of hanging points, and select the outermost steel strand in each group of hanging points in the parallel plane as the reference fixed steel strand A (501).

[0055] (2) Accurately connect the U-shaped buckle (412) to the steel strand A (501) to ensure that its position is moderate in height and fixed stably. The fastening degree of the U-shaped buckle should be moderate to ensure that there is no relative sliding and the surface of the steel strand is not damaged.

[0056] (3) Install the buckle steel plate (413) and ball head screw (414) welded integrally into a finished component, pass the fastening bolt A (415) through the preset hole in the buckle steel plate, connect with the U-shaped buckle and fasten it, and form a firm initial fixed point.

[0057] (II) Installation of connecting plate and ball head connection

[0058] (1) Accurately fix the ball head wrapped rubber block (403) on the center position of the connecting steel plate (401) by high-strength industrial adhesive material to ensure that the bonding area is sufficient and the bonding strength meets the design requirements.

[0059] (2) Insert the ball head screw (414) into the ball head wrapped rubber block (403) to form a connection system with rotation function. This system can provide multi-angle precise adjustment capability while maintaining stable connection and supporting the weight of the connecting plate (401).

[0060] (III) Installation of cylindrical buckle device

[0061] (1) The cylindrical iron piece buckle (404) and the hole ear B (405) are welded into an integral member and accurately clamped into the selected steel strand (502, 503), and the convex anti-slip pattern on the inner surface fully contacts the surface of the steel strand, increasing the friction;

[0062] (2) The buckle is accurately fastened by the cylindrical iron piece buckle fastening bolt (406), so that a firm locking state is formed between the buckle and the steel strand, ensuring that relative sliding does not occur during lifting;

[0063] (Four) Adjustment device installation and connection

[0064] (1) Install threaded connecting piece A (407) and connecting piece B (408), which are accurately connected through adjustable threaded sleeve (409) to form a telescopic connection system;

[0065] (2) First, lightly tighten the 2 threads of connecting piece A (407), connecting piece B (408) and adjustable threaded sleeve (409) to ensure that the positions of the system components are correct but still have adjustment space;

[0066] (3) Preliminarily fix the threaded connecting piece to the hole ear B (405) on the cylindrical iron piece buckle with fixed bolt F (411), but do not tighten it to ensure that the ear can be rotated and adjusted;

[0067] (4) Use fixed bolt D (410) to preliminarily fix the threaded connecting piece at the other end to the hole ear A (402) on the connecting steel plate, but do not tighten it to ensure that the ear can be rotated and adjusted;

[0068] (5) The remaining 3 groups of fixed devices connected to steel strand B (502) and steel strand C (503) are installed in the same way;

[0069] (6) Adjust the 4 adjustable threaded sleeves (409) to ensure that the 3 hoisting point groups of connecting plates (401) form a preliminary stable monitoring plane in space;

[0070] (7) Hang a plumb line (418) on the hole ear plate (417), and by observing the relative position relationship between the plumb line and the horizontal scale (419) on the connecting steel plate, detect the perpendicularity of the connecting plate (401) to ensure that the entire device is in a vertical state;

[0071] (8) After the connection of the 3 groups of fixed devices (4) is completed, the space position of the entire device is accurately adjusted by rotating the adjustable sleeve (409) to form a preset monitoring configuration plane of the connecting plate (401) fixed device on the 3 groups of hoisting points;

[0072] (9) Tighten the fixing bolts D (410) and F (411) of each lifting point and each connecting screw rod, finally fix the position plane of the connecting fixing device (4) on the three groups of lifting points;

[0073] Third step: Laser emitting device installation and debugging

[0074] (I) Laser emitting device (1) installation

[0075] (1) Securely fix the L-shaped steel plate (101) on the connecting steel plate (401) through the fixing bolt B (416), ensure stable and reliable connection;

[0076] (2) Place the laser emitter (103) accurately between the two semicircles formed by the rubber clamp block (102), which can provide moderate elastic support and buffering effect;

[0077] (3) Fix the rubber clamp block on the L-shaped steel plate through the fixing bolt A (104), form a firm but not too tight fixation of the laser emitter, avoid damaging the laser;

[0078] (4) Adjust the horizontal position of the laser emitter (103) by adjusting the position of the fixing bolt A (104) in the horizontal long hole of the L-shaped steel plate (101), tighten the bolt A (104) to ensure it is in perfect horizontal state, provide accurate emission reference for the laser beam;

[0079] (II) Installation of steel plate with circular hole device (2)

[0080] (1) Fix the T-shaped fixed steel plate A (201) on the fixing device of another steel wire through the fixing bolt B (416);

[0081] (2) Accurately install the steel plate with circular hole (202) on the T-shaped fixed steel plate A (201) through the fixing bolt B (203), ensure tight and adjustable connection;

[0082] (3) Use the vertical long hole screw holes in the four corners of the steel plate with circular hole (202) and the horizontal long hole screw holes on the T-shaped fixed steel plate A (201) to fine-tune the steel plate with circular hole (202) in up-down and left-right directions, ensure the center of the circular hole is accurately aligned with the path of the laser beam, so that the laser beam can pass through the center of the circular hole perfectly;

[0083] (III) Installation of scale observation plate device

[0084] (1) Stably install the T-shaped fixed steel plate B (301) on the fixing device of the third steel wire through the fixing bolt B (416);

[0085] (2) Use the fixed bolt C (303) to fix the observation plate (302) with precise scale on the T-shaped fixed steel plate, ensure the connection fastening and adjustability;

[0086] (3) Use the four corner vertical long hole of the scale observation plate (302) and the horizontal long hole on the T-shaped fixed steel plate B (301) to adjust the scale observation plate (302) in up-down and left-right directions, so that the laser beam can be accurately projected on the 0 point position of the scale line (304) on the scale observation plate (302), and a clear reference point is formed;

[0087] Fourth step: system debugging and function test

[0088] After completing the installation of all components, the overall debugging and function verification of the system are carried out:

[0089] (1) Start the laser emitter (103), observe the projection path of the laser beam, and ensure that the laser beam can smoothly pass through the steel plate (202) with a round hole and be accurately projected on the scale center of the observation plate (302);

[0090] (2) If the first step requirement is not met, the laser beam has a slight deviation, the connecting sleeve (409) can be adjusted to adjust the position of the connecting steel plate (401), or the fastening bolt A (104), the fastening bolt B (203) and the fastening bolt C (303) can be moved to adjust the position of the test laser emitter (103), the steel plate (202) with a round hole and the observation plate (302) with precise scale, and the detection sensitivity and accuracy of the system to the small displacement of the steel strand are verified;

[0091] (3) Test the visibility of the system under different light conditions, especially the visibility of the laser beam and the fluorescent scale line under low light conditions;

[0092] Fifth step: synchronous lifting and monitoring

[0093] (1) Record the initial position of the laser beam (6) on the precise scale observation plate (302) before lifting, as the reference point for monitoring the synchronous lifting of the steel strand;

[0094] (2) During the lifting process, observe that the laser beam always passes through the center small hole of the steel plate with a round hole and is projected on the center position of the observation plate, and the constructor takes this state as the criterion for synchronous lifting.

[0095] The utility model has the following advantages:

[0096] I. Performance improvement

[0097] (1) Night visibility is significantly improved

[0098] The traditional steel strand synchronous lifting monitoring method mainly relies on manual visual observation, which is almost ineffective at night or in low visibility conditions. Even if lighting equipment is used, it is often difficult to observe due to insufficient light or reflection problems. The utility model uses laser technology, reflective materials and fluorescent materials to provide a clear visual reference point in the night environment. The laser beam has very high visibility in the dark, and the fluorescent scale line can also be clearly displayed under weak light, so that the operator can accurately monitor the lifting state under various light conditions. This design significantly improves the safety and efficiency of night construction, expands the construction time window, and speeds up the project progress.

[0099] (2) The monitoring accuracy is greatly improved

[0100] The utility model can realize high-precision monitoring through the combination of precisely machined scale observation plates and directional laser beams. The displacement of the laser point on the scale plate directly reflects the synchronization state of the steel strand, allowing the operator to promptly detect minor synchronization differences and immediately take corrective measures. This high-precision monitoring significantly reduces the safety risks during structure lifting and improves the quality and reliability of synchronous lifting.

[0101] (3) The monitoring process is continuous and uninterrupted

[0102] The traditional monitoring method often involves pasting observation targets on the side of the steel strand and structure connection anchor, and the structure needs to be stationary for 15 minutes for each 1m of lifting to carry out total station observation of the horizontal elevation. After ensuring the lifting point is level, the next step of lifting work can be carried out. This method is a discontinuous stationary observation and cannot monitor continuous changes during lifting. When the steel strand is in a normal synchronous lifting state, the laser beam always passes through the small hole in the center of the steel plate with a circular hole and is projected on the center of the observation plate. The constructor can determine the synchronous lifting state at each moment based on this state.

[0103] (4) Strong adaptability

[0104] Existing high-precision monitoring equipment usually requires complex power and data transmission systems, which have low reliability in harsh construction environments. The utility model adopts a modular design, and each component can work independently with low environmental requirements, making it suitable for various complex construction site conditions. The device can be flexibly adjusted in installation position and monitoring parameters according to different engineering requirements, suitable for various specifications of steel strand and different types of lifting projects. At the same time, the system structure is simple and not easily affected by environmental factors such as rain, snow and dust, showing strong environmental adaptability.

[0105] (5) Convenient operation

[0106] Compared with the traditional monitoring method requiring multiple people to cooperate, the device can be installed and monitored by a small number of people.

[0107] II. Cost reduction

[0108] (1) Simple structure, low manufacturing cost

[0109] The device of the utility model mainly consists of steel plate, fixture, bolt and simple laser emitter and other conventional components, the material is easy to get, the processing technology is simple, and the manufacturing cost is much lower than that of the electronic synchronous monitoring equipment on the market. Compared with those high-end equipment which need complex sensors, signal processors and display systems, the utility model is more economical and practical, and is convenient for large-scale popularization and application.

[0110] (2) Low maintenance cost

[0111] The device adopts modular design, all components can be replaced and repaired individually, which greatly reduces the maintenance cost. The laser emitter is powered by independent power supply, without complex external power supply system, reducing the risk of electrical failure. The overall structure of the device is solid and durable, with strong impact resistance, which can work stably for a long time even in harsh construction environment, prolonging the service life of the equipment and reducing the long-term maintenance cost.

[0112] (3) Low use cost

[0113] The utility model does not need high-quality professional operation, which reduces the human resource cost. The system has low energy consumption, the laser emitter adopts high-efficiency energy-saving design, the battery has long service life, and the energy consumption is reduced. The device can be repeatedly used in multiple engineering projects, which reduces the single use cost and improves the economic benefit.

[0114] III. Accelerate construction speed

[0115] The traditional monitoring method often needs to stand for 15 minutes to observe the horizontal elevation of the structure every 1m, and then the next lifting work can be carried out. The method belongs to continuous dynamic monitoring, and the process does not need to be observed, which greatly shortens the construction lifting time.

[0116] The utility model solves the key problems of steel strand synchronous lifting monitoring, especially the monitoring under low visibility conditions at night and intermittent monitoring, significantly improves the monitoring accuracy and efficiency, reduces the use and maintenance cost, accelerates the construction speed, improves the construction convenience, has wide application prospect and popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0117] Figure 1 Overall three-dimensional schematic diagram of the steel strand synchronous lifting observation device;

[0118] Figure 2 Enlarged schematic diagram of the laser emitting device;

[0119] Figure 3 Parts exploded schematic diagram of the laser emitting device;

[0120] Figure 4 Enlarged schematic diagram of the steel plate device with round holes;

[0121] Figure 5 Parts exploded schematic diagram of the steel plate device with round holes;

[0122] Figure 6 Enlarged schematic diagram of the observation plate device with scales;

[0123] Figure 7 Parts exploded schematic diagram of the observation plate device with scales;

[0124] Figure 8 Enlarged schematic diagram of the steel strand fixing device from the front view;

[0125] Figure 9 Enlarged schematic diagram of the steel strand fixing device from the rear view;

[0126] Figure 10 Parts exploded schematic diagram of the steel strand fixing device.

[0127] Wherein: 1-laser emitting device;

[0128] 2-steel plate device with round holes;

[0129] 3-observation plate device with scales;

[0130] 4-steel strand fixing device;

[0131] 5-steel strand for lifting;

[0132] 6-laser beam;

[0133] 7-structure to be lifted;

[0134] 101-L-shaped fixed steel plate;

[0135] 102-laser emitting device fixing clamp block;

[0136] 103-laser emitter;

[0137] 104-fixing bolt A;

[0138] 201-T-shaped fixing steel plate A;

[0139] 202 - Steel plate with round holes;

[0140] 203-Fixing Bolt B;

[0141] 301-T type fixed steel plate B;

[0142] 302 - Observation plate with graduations;

[0143] 303-Fixing Bolt C;

[0144] 304 - Observation scale line;

[0145] 401 - Connecting steel plate;

[0146] 402 - Connecting Earpiece A;

[0147] 403 - Ball head wrapped with rubber block;

[0148] 404-steel strand fixing body;

[0149] 405-Perforated Ear Plate B;

[0150] 406-Clamping bolt;

[0151] 407-Threaded connecting piece A;

[0152] 408-Threaded connecting piece B;

[0153] 409 - Connecting sleeve;

[0154] 410 - Connecting bolt D;

[0155] 411-Connecting Bolt F;

[0156] 412 - Fixed ball head U-shaped clip;

[0157] 413 - Ball head base;

[0158] 414 - Ball Head;

[0159] 415-Fastening Bolt A (U-shaped clamp connection bolt);

[0160] 416-Fastening Bolt B (Panel Connection Bolt);

[0161] 417 - Vertical line connects the ear piece;

[0162] 418 - Vertical line;

[0163] 419 - Observation scale line;

[0164] 501-Fixed Ball Head Clamp Steel Strand A (Lifting Steel Strand);

[0165] 502 leftmost steel strand B (lifting steel strand connected with cylindrical iron sheet buckle)

[0166] 503 rightmost steel strand C (lifting steel strand connected with cylindrical iron sheet buckle). DETAILED DESCRIPTION

[0167] The utility model will be described below in conjunction with the accompanying Figures 1-10 The utility model is described in detail, and the technical scheme in the utility model embodiment is clearly and completely described. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0168] The utility model discloses an improve in a kind of fixed laser monitoring device of multiple steel strand synchronous lifting, it is especially suitable for low visibility, parallel lifting point is greater than or equal to 3 groups, and each lifting point cable is greater than or equal to 3 synchronous lifting monitoring, including the following contents: it is described in detail below in conjunction with the accompanying drawings;

[0169] Figure 1 It is the three-dimensional schematic diagram of steel strand synchronous lifting observation device whole, can know that the monitoring device composition includes:

[0170] Laser emission device 1: for emitting laser beam, install on steel strand fixing device 4, can horizontally adjust laser beam position;

[0171] Steel plate device 2 with round hole: install on steel strand fixing device 4, for laser beam to pass through, hole diameter is greater than laser beam diameter 6mm;

[0172] Observation plate device 3 with scale: install on steel strand fixing device 4, for receiving laser beam projection and observing its position;

[0173] Steel strand fixing device 4 and lifting steel strand 5: steel strand fixing device 4 one end locks steel strand 5, the other end is connected steel plate 401, respectively by 4 groups of telescopic double screw and 1 group of ball head screw connection fixed.

[0174] Figure 1 Laser beam 6: laser beam emitted by laser emission device;The structure 7 of being lifted: the building structure of being lifted by steel strand, steel strand and lifting object connection are only schematic.

[0175] Figure 1 Steel strand 5 is divided into: the lifting steel strand A 501 connected with U-shaped buckle;

[0176] Lifting steel strand B502 connected with the cylindrical iron sheet buckle;

[0177] Lifting steel strand C503 connected with the cylindrical iron sheet buckle.

[0178] See the attached Figure 2 , Figure 3 The content and installation method of the middle member:

[0179] Figure 2 Amplified schematic diagram of the laser emitting device;

[0180] Figure 3 Parts exploded view of the laser emitting device;

[0181] The composition of the laser emitting device 1 includes;

[0182] L-shaped steel plate 101: fixed by bolts on the steel strand adjustable fixing device, the long edge plate is opened into a long strip-shaped hole, used for horizontal adjustment of the laser device positioning;

[0183] Rubber clamp block 102: clamps the laser emitting device by bolts;

[0184] Laser emitter 103: visible laser beam emitting equipment with waterproof shell and independent power supply;

[0185] Fixing bolt A 104: used for fixing the rubber clamp block, L-shaped steel plate and visible laser beam emitting equipment.

[0186] See the attached Figure 4 , Figure 5 The content and installation method of the middle member:

[0187] Figure 4 Amplified schematic diagram of the steel plate device with round holes;

[0188] Figure 5 Parts exploded view of the steel plate device with round holes;

[0189] The composition of the steel plate device with round holes 2 includes;

[0190] T-shaped fixed steel plate A 201: fixed by bolts on the steel strand adjustable fixing device, the long edge plate is opened into a long strip-shaped hole, used for horizontal adjustment of the steel plate with round holes positioning;

[0191] Steel plate with round holes 202: the central part of the steel plate is provided with a precisely processed round hole, the hole diameter is 6mm larger than the diameter of the laser beam, used for the laser beam to pass through, and the plate is opened into a vertical long strip-shaped bolt hole at the four corners, used for vertical adjustment of the steel plate with round holes positioning;

[0192] Fixing bolt B 203: used for fixing the steel plate with round holes on the T-shaped steel plate.

[0193] See the attachedFigure 6 , Figure 7 , The content of the middle member and the installation method:

[0194] Figure 6 The enlarged schematic diagram of the scale observation plate device;

[0195] Figure 7 The exploded view of the scale observation plate device parts;

[0196] The composition of the scale observation plate device includes;

[0197] T-shaped fixed steel plate B301: fixed on the steel strand adjustable fixing device by bolts, the long edge plate has a long strip hole, used for horizontal adjustment of the scale observation plate positioning;

[0198] Scale observation plate 302: the surface is provided with precise scale lines and fluorescent coating, used for observing the position of the laser beam, the plate has vertical long strip bolt holes at the four corners, used for vertical adjustment of the scale observation plate positioning;

[0199] Fixed bolt C303: used for fixing the scale observation plate on the T-shaped steel plate;

[0200] Observation scale line 304: precise scale line, visible at night, used for accurate measurement of the displacement of the laser point.

[0201] See the attached Figure 8 , Figure 9 , Figure 10 The content of the middle member and the installation method:

[0202] Figure 8 The front side view of the steel strand adjustable fixing device;

[0203] Figure 9 The rear side view of the steel strand adjustable fixing device;

[0204] Figure 10 The exploded view of the steel strand adjustable fixing device parts;

[0205] The composition of the steel strand fixing device includes;

[0206] Connecting steel plate 401: used for connecting each functional module, the plate has two horizontal long strip bolt holes on the upper and lower surfaces;

[0207] Hole ear A402: welded at the four corners of the connecting steel plate;

[0208] Rubber-coated ball head block 403: pasted on the center of the connecting steel plate;

[0209] Cylindrical iron sheet buckle 404: used for fixing the cylindrical iron sheet buckle on the steel strand, the inner surface is provided with protruding anti-slip lines;

[0210] Hole-ear B405: welded on the cylindrical iron sheet buckle;

[0211] Cylindrical iron sheet buckle fastening bolt 406: used to tighten the clamping sheet and ensure the clamping and fixing with the steel strand;

[0212] Threaded connecting sheet A407: cooperates with the adjustable sleeve to adjust the distance and angle of the cylindrical iron sheet buckle and the connecting steel plate;

[0213] Threaded connecting sheet B408: cooperates with the adjustable sleeve to adjust the distance and angle of the cylindrical iron sheet buckle and the connecting steel plate;

[0214] Adjustable sleeve 409: connects the two threaded connecting sheets and adjusts the distance of the two threaded connecting sheets by rotating;

[0215] Fixing bolt D410: used to fix the threaded connecting sheet and the ear on the connecting plate;

[0216] Fixing bolt F411: used to fix the threaded connecting sheet and the ear on the cylindrical iron sheet buckle;

[0217] U-shaped buckle 412: used to fix the U-shaped buckle on the steel strand;

[0218] Buckle steel plate 413: two holes are arranged on the steel plate to facilitate the threaded bolt of the U-shaped buckle to pass through;

[0219] Ball screw 414: welded in the middle of the buckle steel plate;

[0220] Fastening bolt A415: used to fasten the U-shaped buckle and the buckle steel plate;

[0221] Fastening bolt B416: used to fasten the L-shaped fixing steel plate and the T-shaped fixing steel plate;

[0222] Hole-ear plate 417: welded on the connecting steel plate;

[0223] Plumb line 418: hung on the hole-ear plate;

[0224] Horizontal scale 419: marked on the connecting steel plate.

[0225] The working principle of the device is described as follows:

[0226] The core principle of the utility model is to use a laser beam as a reference line, and to monitor the lifting state of the steel strand by observing the position change of the laser beam passing through the small hole and mapped on the scale observation plate. The specific working principle is as follows:

[0227] 1. Laser positioning principle:

[0228] (1) The laser emitting device is fixed on the steel strand, and the horizontal laser beam is emitted synchronously with the lifting of the steel strand;

[0229] (2) The laser beam passes through the middle steel plate with a circular hole and is projected onto the observation plate with scales on the other side;

[0230] (3) When the steel strand is in a normal synchronous lifting state, the laser beam always passes through the center small hole of the steel plate with a circular hole and is projected on the center position of the observation plate.

[0231] 2. Deviation detection principle:

[0232] (1) When the lifting speed of the steel strand where the observation plate is located is faster than that of other steel strands, the relative position of the observation plate will move up, causing the laser point on the observation plate to shift downward;

[0233] (2) When the lifting speed of the steel strand where the observation plate is located is slower than that of other steel strands, the relative position of the observation plate will move down, causing the laser point on the observation plate to shift upward;

[0234] (3) When the lifting speed of the steel strand where the steel plate with a circular hole is located is slower than that of other steel strands, there is laser reflection on the upper edge of the steel plate with a circular hole, the laser point on the observation plate is non-circular, and the laser beam is always projected on the center position of the observation plate;

[0235] (4) When the lifting speed of the steel strand where the steel plate with a circular hole is located is faster than that of other steel strands, there is laser reflection on the lower edge of the steel plate with a circular hole, the laser point on the observation plate is non-circular, and the laser beam is always projected on the center position of the observation plate;

[0236] (5) When the lifting speed of the steel strand where the laser emitting device is located is slower than that of other steel strands, there is laser reflection on the lower edge of the steel plate with a circular hole, the laser point on the observation plate is non-circular, and the laser point on the observation plate shifts downward;

[0237] (6) When the lifting speed of the steel strand where the laser emitting device is located is faster than that of other steel strands, there is laser reflection on the upper edge of the steel plate with a circular hole, the laser point on the observation plate is non-circular, and the laser point on the observation plate shifts upward;

[0238] (7) By the position of laser reflection on the edge of the hole of the steel plate with a circular hole and the position of the scale line of the laser point on the observation plate, it can be accurately judged whether the steel strands are synchronously lifted and the relative lifting speed between the steel strands.

[0239] 3. Night visualization principle:

[0240] (1) The laser beam has extremely high visibility at night, and can be clearly observed even in low visibility conditions;

[0241] (2) The edge of the small hole of the steel plate with a circular hole is coated with a reflective material, and after the laser beam is irradiated, the reflection is clearly visible

[0242] (3) The scale line on the observation plate is made of fluorescent material, which is still clear in weak light environment;

[0243] (4) The combined design ensures the monitoring effect during night construction, greatly improving the safety of night operation.

[0244] 4. Flexible adjustment principle of connecting plate for fixing steel strand:

[0245] (1) The steel strand fixing device adopts 4 groups of cylindrical iron sheet buckles and 1 group of U-shaped buckle clamping structure to ensure that the connecting steel plate is stably installed on the steel strand without deviation;

[0246] (2) The ball head connecting device provides multi-directional adjustment function, which is convenient for preliminary adjustment of the position and angle of the connecting steel plate;

[0247] (3) The 4 groups of screw rods utilize sleeve rotation to adjust the length of the 2 side screw rods, which is convenient for accurate adjustment of the position and angle of the connecting steel plate;

[0248] (4) The overall structure is simple and solid, not easy to damage, and suitable for harsh construction environment.

[0249] The installation and implementation process of the device will be described below:

[0250] First step: preparation stage before installation

[0251] Before installing the monitoring device, the construction site should be fully surveyed to confirm the arrangement of steel strands 5, environmental light conditions and other factors that may affect installation. At the same time, all parts are checked to ensure that the laser emitter 1 has sufficient power, the scale plate 3 has intact fluorescent coating, and the fixing device is intact.

[0252] Second step: selection of steel strand and installation of fixing device

[0253] 1. Installation of middle steel strand 501 fixing device

[0254] (1) Determine the parallel plane of the three groups of hanging points, and select the outermost steel strand as the reference fixed steel strand 501 in each group of hanging points.

[0255] (2) Accurately connect the U-shaped buckle 412 to the steel strand A 501 to ensure that its position is moderate in height and fixed stably. The tightness of the U-shaped buckle should be moderate, which can ensure that there is no relative sliding and the surface of the steel strand is not damaged.

[0256] (3) Install the buckle steel plate 413 and the ball head screw 414 as an integrated product component, pass the fastening bolt A 415 through the preset hole on the buckle steel plate, connect with the U-shaped buckle, and fasten to form a firm initial fixed point.

[0257] 2. Connection plate and ball head connection installation

[0258] (1) Wrap the ball head with rubber block 403 and fix it accurately on the center of the connection steel plate 401 with high-strength industrial adhesive material, ensuring sufficient bonding area and bonding strength meeting the design requirements.

[0259] (2) Insert the ball head screw 414 into the ball head wrapped rubber block 403 to form a connection system with rotation function, which can provide multi-angle precise adjustment while maintaining stable connection and supporting the weight of the connection plate 401.

[0260] 3. Installation of cylindrical buckle device

[0261] (1) Accurately insert the cylindrical iron sheet buckle 404 and the hole ear B 405 into the selected steel strand 502, 503, and the protruding anti-slip pattern on the inner surface fully contacts the surface of the steel strand to increase friction.

[0262] (2) Accurately fasten the buckle with the cylindrical iron sheet buckle fastening bolt 406 to form a firm locking state between the buckle and the steel strand, ensuring that there is no relative sliding during lifting.

[0263] 4. Installation and connection of adjustment device

[0264] (1) Install threaded connection plate A 407 and threaded connection plate B 408, which are accurately connected by adjustable threaded sleeve 409 to form an extendable connection system;

[0265] (2) First, lightly tighten the 2 threads of connection plate A 407, connection plate B 408, and adjustable threaded sleeve 409 to ensure the correct position of the system components but still leave adjustment space;

[0266] (3) Preliminarily fix the threaded connection plate with the hole ear B 405 on the cylindrical iron sheet buckle with fixed bolt F 411, but do not tighten it to ensure that the ear can be adjusted rotationally;

[0267] (4) Use fixed bolt D 410 to preliminarily fix the threaded connection plate on the other end with the hole ear A 402 on the connection steel plate, but do not tighten it to ensure that the ear can be adjusted rotationally;

[0268] (5) The remaining 3 groups of fixed devices connected with steel strand B 502 and steel strand C 503 are installed in the same way.

[0269] (6) Adjusting 4 groups of adjustable threaded sleeves 409, ensuring that the three groups of connecting plates 401 at the three hangers form a preliminary stable monitoring plane in space position;

[0270] (7) Hanging a plumb line 418 on the hole ear plate 417, and detecting the verticality of the connecting plate 401 by observing the relative position relationship between the plumb line and the horizontal scale 419 on the connecting steel plate, to ensure that the entire device is in a vertical state;

[0271] (8) After the connection of the three groups of fixing devices 4 is completed, the space position of the entire device is accurately adjusted by rotating the adjustable sleeve 409, so that the connecting plate 401 fixing device at the three hangers forms a preset monitoring configuration plane;

[0272] (9) Tighten the bolts D410 and F411 of each hanger and each connecting screw rod, and finally fix the position plane of the three groups of hangers.

[0273] Third step: installation and debugging of laser emitting device

[0274] 1. Laser emitting device 1 installation

[0275] (1) The L-shaped steel plate 101 is firmly fixed on the connecting steel plate 401 by the fixing bolt B416, to ensure stable and reliable connection.

[0276] (2) The laser emitter 103 is accurately placed between the two semicircles formed by the rubber clamp block 102, which can provide moderate elastic support and buffering effect.

[0277] (3) The rubber clamp block is fixed on the L-shaped steel plate by the fixing bolt A104, forming a firm but not too tight fixing of the laser emitter, to avoid damaging the laser.

[0278] (4) The horizontal position of the laser emitter 103 is finely adjusted by adjusting the position of the fixing bolt A104 in the horizontal long hole of the L-shaped steel plate 101, and the fixing bolt A104 is tightened to ensure that it is in a perfect horizontal state, providing accurate emission reference for the laser beam.

[0279] 2. Installation of circular hole steel plate device 2

[0280] (1) The T-shaped fixed steel plate A201 is fixed on the fixing device of the other steel wire by the fixing bolt B416.

[0281] (2) The circular hole steel plate 202 is accurately installed on the T-shaped fixed steel plate A201 by the fixing bolt B203, to ensure tight and adjustable connection.

[0282] (3) Adjust the position of the steel plate with a round hole 202 in the up-down and left-right directions by using the vertical long screw holes in the four corners of the steel plate with a round hole 202 and the horizontal long screw holes on the T-shaped fixing steel plate A 201, so as to ensure that the center of the round hole is accurately aligned with the path of the laser beam, and the laser beam can pass through the center of the round hole perfectly.

[0283] 3. Installation of the scale observation plate device

[0284] (1) Securely install the T-shaped fixing steel plate B 301 on the fixing device of the third steel strand by using the fixing bolts B 416.

[0285] (2) Fix the observation plate 302 with precise scales on the T-shaped fixing steel plate B 301 by using the fixing bolts C 303, ensuring tight and adjustable connection.

[0286] (3) Adjust the position of the observation plate 302 with scales in the up-down and left-right directions by using the vertical long screw holes in the four corners of the observation plate 302 and the horizontal long screw holes on the T-shaped fixing steel plate B 301, so that the laser beam can be accurately projected on the 0 point position of the scale line 304 on the observation plate 302 with scales, forming a clear and readable reference point.

[0287] Fourth step: System integration and function test

[0288] After completing the installation of all components, perform overall system integration and function verification:

[0289] (1) Start the laser emitter 103 and observe the projection path of the laser beam to ensure that the laser beam can smoothly pass through the steel plate with a round hole 202 and be accurately projected on the scale center of the observation plate 302.

[0290] (2) If the first step requirement is not met, there is a slight deviation in the laser beam, which can be adjusted by adjusting the connection sleeve 409 to adjust the position of the connection steel plate 401, or by moving the fastening bolts A 104, fastening bolts B 203, and fastening bolts C 303 to adjust the position of the test laser emitter 103, the steel plate with a round hole 202, and the observation plate 302 with precise scales, and verify the detection sensitivity and accuracy of the system to the small displacement of the steel strand.

[0291] (3) Test the visibility of the system under different light conditions, especially in low light conditions to verify the visibility of the laser beam and the fluorescent scale line.

[0292] Fifth step: Synchronous lifting and monitoring

[0293] (1) Record the initial position of the laser beam 6 on the observation plate 302 with precise scales before lifting, as the reference point for synchronous lifting and monitoring of the steel strand.

[0294] (2) The observation laser beam always passes through the small hole in the center of the steel plate with a circular hole and is projected on the center of the observation plate during the lifting process, and the operator uses this state as the criterion for judging synchronous lifting.

[0295] Compared with the prior art, the utility model has remarkable advantages in performance improvement and cost reduction. These advantages are realized through innovative design and key technical solutions, which will be described in detail below in combination with specific technical features.

[0296] I. Performance improvement

[0297] (1) Night visibility is significantly improved

[0298] The traditional steel strand synchronous lifting monitoring method mainly relies on manual visual observation, which is almost impossible to work effectively at night or in low visibility conditions. Even if lighting equipment is used, it often causes observation difficulties due to insufficient light or reflection problems. The utility model uses laser technology, reflective materials and fluorescent materials to provide a clear visual reference point in the night environment. The laser beam has very high visibility in the dark, and the fluorescent scale line can also be clearly displayed under weak light, so that the operator can accurately monitor the lifting state under various light conditions. This design significantly improves the safety and efficiency of night construction, expands the construction time window, and speeds up the project progress.

[0299] (6) Monitoring accuracy is greatly improved

[0300] The utility model can realize high-precision monitoring through the combination of precisely machined scale observation plates and directional laser beams. The displacement of the laser point on the scale plate directly reflects the synchronization state of the steel strand, so that the operator can discover small asynchronization in time and take corrective measures immediately. This high-precision monitoring significantly reduces the safety risk during the lifting of the structure and improves the quality and reliability of synchronous lifting.

[0301] (7) The monitoring process is continuous and uninterrupted

[0302] The traditional monitoring method often pastes observation targets on the side of the steel strand and structure connection anchor, and the structure needs to be stationary for 15 minutes for each 1m of lifting to carry out total station observation of the horizontal elevation. After ensuring the lifting point level, the next step of lifting work can be carried out. This method is a discontinuous static observation and cannot monitor the continuous changes during lifting. When the steel strand is in normal synchronous lifting state, the laser beam always passes through the small hole in the center of the steel plate with a circular hole and is projected on the center of the observation plate. The operator can determine the synchronous lifting condition at each moment according to this state.

[0303] (8) Strong adaptability

[0304] The existing high-precision monitoring equipment usually needs complex power supply and data transmission system, and has low reliability in harsh construction environment. The utility model discloses a modular design, and each component can work independently, and has low environmental requirements, and can adapt to various complex construction site conditions. The device can flexibly adjust the installation position and monitoring parameters according to different engineering requirements, and is suitable for various specifications of steel strand and different types of lifting engineering. At the same time, the system structure is simple, and is not easy to be affected by rain, snow, dust and other environmental factors, and has strong environmental adaptability.

[0305] (9) convenient operation

[0306] Compared with the traditional monitoring method needing cooperation of many people, the utility model can complete installation and monitoring work by a small amount of personnel. The device installation process is simple and clear, and ordinary operators can master it after simple guidance without professional technical training. The monitoring process is intuitive and visual, and the synchronous state can be judged by observing the position of the laser point without complex data analysis and processing. The efficient and convenient operation mode greatly reduces the labor cost and training cost, and improves the monitoring efficiency.

[0307] II. Cost reduction

[0308] (1) simple structure and low manufacturing cost

[0309] The device of the utility model mainly consists of steel plates, clamps, bolts and simple laser emitters and other conventional components, the materials are easy to obtain, the processing technology is simple, and the manufacturing cost is much lower than that of the electronic synchronous monitoring equipment on the market. Compared with those high-end equipment needing complex sensors, signal processors and display systems, the utility model is more economical and practical, and is convenient for large-scale popularization and application.

[0310] (2) low maintenance cost

[0311] The device adopts modular design, and all components can be replaced and repaired independently, which greatly reduces the maintenance cost. The laser emitter is powered by an independent power supply, and does not need a complex external power supply system, which reduces the risk of electrical failure. The overall structure of the device is solid and durable, and has strong impact resistance, so that the device can work stably for a long time even in harsh construction environment, prolongs the service life of the equipment, and reduces the long-term maintenance cost.

[0312] (3) low use cost

[0313] The utility model does not need high-quality professional personnel to operate, which reduces the human resource cost. The system has low energy consumption, the laser emitter adopts high-efficiency energy-saving design, the battery has long service life, and the energy consumption is reduced. The device can be repeatedly used in multiple engineering projects, which reduces the single-use cost and improves the economic benefit.

[0314] III. Construction speed is accelerated

[0315] Traditional monitoring method often needs to rest for 15 minutes to carry out total station observation of horizontal elevation every time the structure is lifted by 1 m, and after ensuring the lifting point is horizontal, the next step of lifting work can be carried out. The method belongs to continuous dynamic monitoring, and the process does not need to be observed, which greatly shortens the construction lifting time.

[0316] The utility model discloses a simple and ingenious design, solve the steel strand synchronous monitoring, especially the key problem of monitoring and intermittent monitoring under the condition of low visibility at night, significantly improve the monitoring precision and efficiency, reduce the use and maintenance cost, speed up the construction speed, improve the construction convenience, have wide application prospect and popularization value.

[0317] Embodiment:

[0318] The existing double-core-cylinder connected steel structure is composed of a 45m-span space steel truss in the middle connection, and the weight is about 720 tons, which is in the shape of a cuboid. During construction, 3 lifting points are arranged on both sides along the long direction of the span, and each lifting point is lifted by 10 steel strands, and the space steel truss is lifted as a whole to 20m and connected with the main core cylinder.

[0319] The space steel truss has been assembled as a whole, and the space steel truss is lifted by 2cm by using 6 oil hydraulic jacks and 6 lifting points to maintain stability.

[0320] I. Preparation before installation of monitoring device

[0321] Before installing the monitoring device, the construction site should be fully surveyed first to confirm the arrangement of the steel strands 5, the environmental light conditions and other factors that may affect the installation. At the same time, all parts are checked to ensure that the laser emitter 1 has sufficient power, the scale plate 3 has intact fluorescent coating, and the fixing device is intact.

[0322] II. Steel strand selection and fixing device installation

[0323] According to the specific requirements of the lifting project, three selected 501, 502, 503 from the multiple steel strands 5 are used as key monitoring points for fixing the monitoring equipment. The selection of these three groups of steel strands should consider their mechanical position in the lifting structure to ensure that the overall lifting state can be fully reflected.

[0324] 1. Installation of middle steel strand 501 fixing device

[0325] The initial stage of the installation process first handles the installation of the fixing device of the middle steel strand 501, which is the reference point of the entire monitoring system:

[0326] (1) Determine the parallel plane of the three groups of lifting points, and select the outermost steel strand as the reference fixing steel strand 501 from the multiple steel strands in each group of lifting points in the parallel plane.

[0327] (2) Accurately connect the U-shaped buckle 412 to the steel strand A501, and ensure that its position is moderate in height and stable. The fastening degree of the U-shaped buckle should be moderate, which can ensure that there is no relative sliding and the surface of the steel strand is not damaged.

[0328] (3) Install the buckle steel plate 413 and the ball head screw 414 as an integrated product component, pass the fastening bolt A415 through the preset hole on the buckle steel plate, connect and fasten the U-shaped buckle, and form a firm initial fixed point.

[0329] 2. Connection plate and ball head connection installation

[0330] (1) Accurately fix the rubber block 403 wrapped around the ball head on the center position of the connection steel plate 401 by high-strength industrial adhesive material, and ensure that the bonding area is sufficient and the bonding strength meets the design requirements.

[0331] (2) Insert the ball head screw 414 into the rubber block 403 wrapped around the ball head to form a connection system with rotation function, which can provide multi-angle accurate adjustment capability while maintaining stable connection and supporting the weight of the connection plate 401.

[0332] 3. Cylindrical buckle device installation

[0333] For the steel strand B502 and the steel strand C503, use the cylindrical iron sheet buckle 404 for fixation:

[0334] (1) Accurately clamp the cylindrical iron sheet buckle 404 and the hole ear B405 into the selected steel strand B502 and steel strand C503, and the convex anti-slip pattern on the inner surface of the buckle is in full contact with the surface of the steel strand to increase the friction.

[0335] (2) Accurately fasten the buckle by the cylindrical iron sheet buckle fastening bolt 406 to form a firm locking state between the buckle and the steel strand, and ensure that there is no relative sliding during lifting.

[0336] 4. Adjustment device installation and connection

[0337] (1) Install the threaded connection piece A407 and the connection piece B408, which are accurately connected by the adjustable threaded sleeve 409 to form an extendable connection system;

[0338] (2) First, slightly tighten the 2 threads of the connection piece A407, the connection piece B408 and the adjustable threaded sleeve 409 to ensure that the positions of the system components are correct but still have adjustment space;

[0339] (3) The threaded connecting plate is preliminarily fixed with the hole-plate B405 on the cylindrical iron plate buckle through the fixing bolt F411, but not tightened, to ensure the rotation of the hole-plate;

[0340] (4) The threaded connecting plate at the other end is preliminarily fixed with the hole-plate A402 on the connecting steel plate through the fixing bolt D410, but not tightened, to ensure the rotation of the hole-plate;

[0341] (5) The remaining three groups of fixing devices connected with the steel wire B502 and the steel wire C503 are installed in the same way;

[0342] (6) The four groups of adjustable threaded sleeves 409 are adjusted to ensure that the three groups of connecting plates 401 at the three hanging points form a preliminarily stable monitoring plane in space;

[0343] (7) The plumb line 418 is hung on the hole-plate 417, and the perpendicularity of the connecting plate 401 is detected by observing the relative position relationship between the plumb line and the horizontal scale 419 on the connecting steel plate, to ensure that the entire device is in a vertical state;

[0344] (8) After the connection of the three groups of fixing devices 4 is completed, the space position of the entire device is accurately adjusted by rotating the adjustable sleeve 409, so that the connecting plate 401 fixing device at the three groups of hanging points forms a preset monitoring configuration plane;

[0345] (9) The bolts D410 and F411 of each hanging point and each connecting screw rod are tightened, and finally the position plane of the three groups of hanging points is fixed.

[0346] Three, laser emitting device installation and debugging

[0347] After the installation of the three groups of fixing devices 4 is completed, the installation of the core components of the laser monitoring system is performed:

[0348] 1. Laser emitting device 1 installation

[0349] (1) The L-shaped steel plate 101 is firmly fixed on the connecting steel plate 401 through the fixing bolt B416, to ensure stable and reliable connection;

[0350] (2) The laser emitter 103 is accurately placed between the two semicircles formed by the rubber clamp block 102, which can provide moderate elastic support and buffering effect;

[0351] (3) The rubber clamp block is fixed on the L-shaped steel plate through the fixing bolt A104, to form a firm but not tight fixing of the laser emitter, to avoid damaging the laser;

[0352] (4) By adjusting the position of the fixing bolt A104 in the horizontal long hole of the L-shaped steel plate 101, the horizontal position of the laser emitter 103 is finely adjusted, the bolt A104 is tightened, and the perfect horizontal state is ensured to provide an accurate emission reference for the laser beam.

[0353] 2. Installation of the round-hole steel plate device 2

[0354] (1) The T-shaped fixed steel plate A201 is fixed on the fixing device of another steel wire through the fixing bolt B416;

[0355] (2) The round-hole steel plate 202 is accurately installed on the T-shaped fixed steel plate A201 through the fixing bolt B203, ensuring tight and adjustable connection;

[0356] (3) The round-hole steel plate 202 is finely adjusted in up-down and left-right directions using the vertical long-hole screw holes in the four corners of the round-hole steel plate 202 and the horizontal long-hole screw holes on the T-shaped fixed steel plate A201, ensuring the accurate alignment of the center of the round hole with the path of the laser beam, so that the laser beam can perfectly pass through the center of the round hole.

[0357] 3. Installation of the scale observation plate device

[0358] (1) The T-shaped fixed steel plate B301 is stably installed on the fixing device of the third steel wire through the fixing bolt B416;

[0359] (2) The observation plate 302 with precise scales is fixed on the T-shaped fixed steel plate using the fixing bolt C303, ensuring tight and adjustable connection;

[0360] (3) The scale observation plate 302 is finely adjusted in up-down and left-right directions using the vertical long-hole screw holes in the four corners of the scale observation plate 302 and the horizontal long-hole screw holes on the T-shaped fixed steel plate B301, so that the laser beam can be accurately projected on the 0 point position of the scale line 304 on the scale observation plate 302, forming a clear and readable reference point.

[0361] Four, System Debugging and Function Testing

[0362] After completing the installation of all components, the overall system debugging and function verification are performed:

[0363] (1) Start the laser emitter 103, observe the projection path of the laser beam, and ensure that the laser beam can smoothly pass through the round-hole steel plate 202 and be accurately projected on the scale center of the observation plate 302;

[0364] (2) If the first step is not met, the laser beam has a slight deviation, the connecting sleeve 409 can be adjusted to adjust the position of the connecting steel plate 401, or the fastening bolt A 104, the fastening bolt B 203, and the fastening bolt C 303 can be moved to adjust the position of the test laser emitting device 103, the steel plate with a round hole 202, and the observation plate with a precise scale 302, and the detection sensitivity and accuracy of the system to the slight displacement of the steel strand are verified.

[0365] (3) Test the visibility of the system under different light conditions, especially in low light conditions to verify the visibility of the laser beam and the fluorescent scale line.

[0366] Five, synchronous lifting

[0367] (1) Record the initial position of the laser beam 6 in the precise scale observation plate 302 before lifting as the reference point for monitoring the synchronous lifting of the steel strand.

[0368] (2) During the lifting process, the laser beam always passes through the center hole of the steel plate with a round hole and is projected on the center of the observation plate, and the constructor takes this state as the criterion for synchronous lifting.

[0369] Through the above installation process, a complete and high-precision laser monitoring system for synchronous lifting of steel strands is formed. The system combines precise mechanical positioning and optical principles to realize continuous and accurate monitoring of the synchronous lifting state of the steel strand under various environmental conditions, especially in low visibility at night, and provides reliable safety protection for large structure lifting construction.

[0370] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser monitoring device fixed to the simultaneous lifting of a plurality of steel strands, characterized in that ； The application relates to a laser beam positioning device for a steel strand, which comprises a laser beam emitting device (1) for emitting a laser beam, a steel strand fixing device (4) and a steel strand (5) for lifting; the laser beam emitting device (1) is installed on the steel strand fixing device (4) and can horizontally adjust the position of the laser beam; a steel plate device (2) with a round hole is installed on the steel strand fixing device (4) and is used for the laser beam to pass through; the hole diameter is larger than the diameter of the laser beam; an observation plate device (3) with a scale is installed on the steel strand fixing device (4) and is used for receiving the laser beam projection and observing the position of the laser beam; the steel strand fixing device (4) locks the steel strand (5) at one end and is connected with a steel plate (401) at the other end, and is connected and fixed by four groups of telescopic double screw rods and one group of ball head screw rods. The laser beam emitting device (1) comprises an L-shaped steel plate (101) which is fixed to the steel strand adjustable fixing device by bolts, a long edge plate of the L-shaped steel plate is provided with a long strip-shaped hole and is used for horizontally adjusting the positioning of the laser device; a rubber clamp block (102) which is used for clamping the laser beam emitting device by bolts; a laser emitter (103) which is a visible laser beam emitting equipment and is provided with a waterproof shell and an independent power supply; and a fixing bolt A (104) which is used for fixing the rubber clamp block, the L-shaped steel plate and the visible laser beam emitting equipment. The steel plate device (2) with a round hole comprises a T-shaped fixed steel plate A (201) which is fixed to the steel strand adjustable fixing device by bolts, a long edge plate of the T-shaped fixed steel plate A is provided with a long strip-shaped hole and is used for horizontally adjusting the positioning of the steel plate with a round hole; a steel plate with a round hole (202) which is provided with a precisely processed round hole in the center and is used for the laser beam to pass through, the hole diameter is larger than the diameter of the laser beam by 6mm, four corners of the steel plate are provided with vertical long strip-shaped bolt holes and are used for vertically adjusting the positioning of the steel plate with a round hole; and a fixing bolt B (203) which is used for fixing the steel plate with a round hole on the T-shaped steel plate. The observation plate device (3) with a scale comprises a T-shaped fixed steel plate B (301) which is fixed to the steel strand adjustable fixing device by bolts, a long edge plate of the T-shaped fixed steel plate B is provided with a long strip-shaped hole and is used for horizontally adjusting the positioning of the observation plate with a scale; an observation plate with a scale (302) which is provided with precise scale lines and a fluorescent coating on the surface and is used for observing the position of the laser beam, four corners of the observation plate are provided with vertical long strip-shaped bolt holes and are used for vertically adjusting the positioning of the observation plate with a scale; a fixing bolt C (303) which is used for fixing the observation plate with a scale on the T-shaped steel plate; and observation scale lines which are precise scale lines (304) and are visible at night and are used for accurately measuring the displacement of the laser point.

2. The laser monitoring device fixed to the synchronous lifting of the multi-beam steel strand according to claim 1, characterized in that; The steel strand fixing device (4) comprises a connecting steel plate (401) which is used for connecting various functional modules and is provided with two horizontal long strip-shaped bolt holes on the upper and lower surfaces; a hole ear piece A (402) which is welded to four corners of the connecting steel plate (401); a ball head wrapped rubber block (403) which is pasted to the center of the connecting steel plate (401); a cylindrical iron sheet buckle (404) which is used for being fixed on the steel strand and is provided with a convex anti-skid line on the inner surface; a hole ear piece B (405) which is welded to the cylindrical iron sheet buckle (404); and a cylindrical iron sheet buckle fastening bolt (406) which is used for tightening the clamp piece and ensuring the clamping and fixing of the steel strand. ​ ​ ​ ​ 3. The laser monitoring device fixed to the synchronous lifting of the multi-beam steel strand according to claim 1, characterized in that; ​ ​ ​ ​ 4. The laser monitoring device fixed to the synchronous lifting of the multi-beam steel strand according to claim 1, characterized in that; ​ ​ ​ ​ ​ ​ 5. The laser monitoring device fixed to the synchronous lifting of the multi-beam steel strand according to claim 1, characterized in that; ​ ​ ​ ​ ​ ​ ​ Threaded connecting piece A (407): Cooperate with adjustable sleeve (409), used to adjust the distance and angle of cylindrical iron sheet buckle (404) and connecting steel plate (401); Threaded connecting piece B (408): Cooperate with adjustable sleeve (409), used to adjust the distance and angle of cylindrical iron sheet buckle and connecting steel plate; Adjustable sleeve (409): Connect 2 sides of threaded connecting piece B (408), adjust the distance of 2 sides of threaded connecting piece B (408) by rotating; Fixing bolt D (410): Used to fix the threaded connecting piece B (408) and the ear on the connecting plate; Fixing bolt F (411): Used to fix the threaded connecting piece B (408) and the ear on the cylindrical iron sheet buckle; U-shaped buckle (412): Used to fix the U-shaped buckle on the steel strand; Buckle steel plate (413): Steel plate with 2 holes, convenient for U-shaped buckle (412) to pass through; Ball head screw (414): Welded in the middle of buckle steel plate (413); Fastening bolt A (415): Used to fasten U-shaped buckle (412) and buckle steel plate (413); Fastening bolt B (416): Used to fasten L-shaped fixed steel plate and T-shaped fixed steel plate; Hole ear plate (417): Welded on connecting steel plate (401); Plumb line (418): Hung on hole ear plate (417); Horizontal scale (419): Marked on connecting steel plate (401).

6. The laser monitoring device fixed on the synchronous lifting of multiple steel strands according to claim 1, characterized in that ； Steel strand (5) includes: lifting steel strand A (501) connected with U-shaped buckle; Lifting steel strand B (502) connected with cylindrical iron sheet buckle; Lifting steel strand C (503) connected with cylindrical iron sheet buckle.

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