High-formwork vertical rod displacement monitoring device and method based on laser

Abstract

The invention relates to the technical field of high-formwork displacement monitoring, and discloses a laser-based high-formwork vertical rod displacement monitoring device and method.The laser-based high-formwork vertical rod displacement monitoring device comprises a supporting structure assembly which comprises a plurality of vertical rods, a plurality of transverse rods and connecting pieces used for connecting the vertical rods and the transverse rods; the laser monitoring assembly comprises a laser transmitter mounted above the vertical rod and a laser receiver arranged on a bearing structure below the vertical rod, the bearing structure comprises a bearing plate and a mounting frame fixed on the bearing plate, and the laser receiver is mounted on the mounting frame; and the displacement amplifying mechanism is arranged between the vertical rod and the mounting frame and is used for amplifying the vertical displacement of the vertical rod and transmitting the vertical displacement to the laser receiver. The displacement amplification mechanism is arranged to amplify the displacement amount of the vertical rod, so that the laser transmitter and the laser receiver are matched with each other, the displacement change is more accurately captured, and the monitoring precision of the tiny settlement displacement is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high formwork displacement monitoring, and in particular to a laser-based high formwork vertical rod displacement monitoring device and method. Background Art

[0002] In the concrete pouring link of building construction, the high formwork support frame bears the combined action of concrete pouring and construction loads. Among them, the vertical rod, as the core support structure, will be subjected to a large compressive load. Under the continuous action of the load, the vertical rod will have various mechanical responses. The most common manifestation is the displacement in the vertical direction, that is, settlement. In order to monitor the displacement of the vertical rod in real time, a laser displacement sensor is usually selected at present. The laser displacement sensor emits a laser beam, which is transmitted through a laser baffle and received by a laser receiver. When the position of the vertical rod of the high formwork support frame changes due to various factors, it drives the position of the laser baffle to change, causing the laser intensity received by the laser receiver to change, realizing the real-time monitoring of the displacement of the high formwork vertical rod.

[0003] A prior art high formwork deformation monitoring device based on infrared point projection with the publication number of CN113865499A includes a support device and an infrared device. The infrared device includes a base, and the base is fixedly installed with a first magnetic suction plate for facilitating adsorption on the high formwork. A rotating frame is rotatably installed on the base through a damping rotating shaft. The usage method includes installing the infrared device, adjusting the infrared device, installing the adjusting device, and collecting monitoring information. Although the above technical solution can be quickly installed by magnetic suction, clamping or bonding, and the overall setting can be completed through simple adjustment, it can effectively use the displacement condition of the infrared ray to judge the deformation condition at the corresponding position on the high formwork, having the advantage of improving construction safety.

[0004] However, in the prior art, in order to monitor the vertical displacement of the vertical rod, a laser displacement sensor is usually selected to be installed at the top of the vertical rod. Because in the high formwork system, the top bears the direct action of construction loads such as formwork and poured concrete, and is prone to vertical displacements such as sinking. However, due to the harsh construction site environment and being in it for a long time, the sensitivity of the laser displacement sensor is prone to decline, resulting in a decrease in its light transmittance, causing the intensity of the laser signal to attenuate during the emission and reception process. When the vertical rod has a small settlement displacement, the originally weak laser signal intensity will interfere with the displacement measurement, resulting in a decrease in measurement accuracy. The originally accurately measurable small displacement changes may not be accurately identified due to signal interference, and even there may be displacement data deviation or loss, thereby making the displacement data of the high formwork vertical rod monitored based on the laser displacement sensor lose reliability and unable to timely and accurately reflect the actual settlement state of the vertical rod. Therefore, there is an urgent need for a laser-based high formwork vertical rod displacement monitoring device and method to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a laser-based vertical displacement monitoring device and method for high formwork upright posts, so as to solve the problem that when the existing high formwork upright posts are vertically displaced by a laser displacement sensor, due to the harsh construction site environment, the sensor is in it for a long time and its sensitivity decreases, resulting in a decrease in measurement accuracy when the upright post has a small settlement displacement.

[0006] A laser-based vertical displacement monitoring device and method for high formwork upright posts provided by the present invention adopt the following technical solutions:

[0007] A laser-based vertical displacement monitoring device for high formwork upright posts includes:

[0008] A support structure assembly, including a plurality of upright posts, a plurality of crossbars, and a connecting piece for connecting the upright posts and the crossbars. The upright posts and the crossbars are erected to form a high formwork framework;

[0009] A laser monitoring assembly, including a laser emitter installed above the upright post and a laser receiver arranged on the bearing structure below the upright post. The bearing structure includes a bearing plate and a mounting bracket fixed on the bearing plate, and the laser receiver is installed on the mounting bracket;

[0010] A displacement amplification mechanism is arranged between the upright post and the mounting bracket, and is used to amplify the vertical displacement of the upright post and transmit it to the laser receiver. The displacement amplification mechanism includes a hoop installed on the upright post, a connecting plate connected to the hoop, and a connecting rod detachably connected to the connecting plate. The connecting rod is slidably connected with a transmission rod through a first slide rail opened thereon. The transmission rod is rotatably connected to the mounting bracket. The transmission rod is slidably connected with a sliding rod through a second slide rail opened thereon. The sliding rod is fixedly connected to the laser receiver through a connecting column.

[0011] Further, a connecting block is fixed at the bottom end of the connecting column, and a sliding block is fixed on the connecting block. A sliding groove for the sliding block to slide is opened on the mounting bracket.

[0012] Further, a first accommodation cavity is opened in the connecting plate. A clamping block is slidably arranged in the first accommodation cavity. A first spring is arranged between one end of the clamping block and the first accommodation cavity. A clamping groove is opened on the clamping block;

[0013] A second accommodation cavity is opened in the connecting rod. A plug rod is inserted into the second accommodation cavity. A second spring is arranged between one end of the plug rod and the second accommodation cavity. The other end of the plug rod is inserted into the first accommodation cavity and is fixed with a wedge block. The wedge block penetrates through the clamping groove, and the contact sides of the wedge block and the clamping groove are both provided with inclined surfaces.

[0014] Further, the other end of the clamping block penetrates outside the first accommodation cavity, and its bottom surface is an inclined surface. A support plate is fixed on the mounting bracket. A top block is fixed on the inner side of the end of the support plate away from the mounting bracket. The inner side of the top end of the top block is an inclined surface;

[0015] When the vertical pole has a vertical displacement, the connection plate and the connecting rod move downward synchronously. When the clamping block moves downward to the position of the top block, the inclined surfaces of the two come into contact, squeezing the clamping block to move in the direction of the first spring, causing the wedge block to disengage from the clamping engagement with the clamping block, and releasing the connection between the connection plate and the connecting rod.

[0016] Furthermore, a protective cover is fixed outside the insertion rod, and the protective cover is movably sleeved outside the connecting rod.

[0017] Furthermore, the laser emitter, the bearing plate, the mounting bracket and the laser receiver are all arranged on the vertical poles at the four corner positions. A U-shaped groove for the vertical pole to pass through is formed on the bearing plate, and the bearing plate is connected to the ground by bolts.

[0018] Furthermore, a symmetrical limiting mechanism is provided on the bearing plate. The limiting mechanism includes a fixing bracket fixed on the bearing plate and a limiting plate rotatably connected to the fixing bracket. The limiting plates are symmetrically located on both sides of the vertical pole. A push rod is hinged on the limiting plate, and the other end of the push rod is inserted into a cavity formed in the bearing plate. A hydraulic cavity is also formed in the bearing plate. The hydraulic cavity is filled with hydraulic oil and is communicated with the cavity.

[0019] A piston rod is inserted into the hydraulic cavity. A third spring is provided between the bottom end of the piston rod and the hydraulic cavity. A connecting plate is fixed to the top end of the piston rod. A pressing rod is fixed to the bottom end of the connection plate, and the pressing rod is located above the connecting plate.

[0020] Furthermore, the limiting plate is rotatably connected to the fixing bracket through a shaft rod, and a torsion spring is provided on the shaft rod.

[0021] Furthermore, an arc-shaped groove is formed on one side of the limiting plate close to the vertical pole, and an anti-slip pad is provided in the arc-shaped groove.

[0022] Furthermore, a monitoring method for the displacement of the high formwork vertical pole based on laser uses the above-mentioned monitoring device for the displacement of the high formwork vertical pole based on laser, and includes the following steps:

[0023] S1: Assemble the monitoring device. Build a high formwork framework by connecting vertical poles and horizontal bars through connecting pieces. Install a laser emitter above the vertical pole, and sequentially install a bearing plate, a mounting bracket and a laser receiver below the vertical pole, and connect the displacement amplification mechanism.

[0024] S2: Initial calibration. Turn on the laser emitter, adjust the position of the laser receiver so that the laser beam accurately irradiates on the laser receiver, and record the laser signal parameters received by the laser receiver at this time as the initial data.

[0025] S3: Real-time monitoring. During the construction process of concrete pouring, continuously monitor the change of the laser signal received by the laser receiver. When the vertical displacement of the vertical pole occurs, the displacement amplification mechanism amplifies the displacement amount and transmits it to the laser receiver, resulting in a change in the position of the laser receiver, thereby causing a change in the received laser signal.

[0026] S4: Data analysis and early warning. Monitor the displacement of the vertical pole according to the change of the laser signal, analyze the calculated displacement amount, and when the displacement amount exceeds the safety threshold, send out an early warning signal in a timely manner.

[0027] Advantages of the present invention:

[0028] 1. By setting up a displacement amplification mechanism, the small vertical displacement of the vertical pole can be gradually amplified and transmitted to the laser receiver through the coordinated action of the connecting rod, the first slide rail, the transmission rod and the second slide rail, thereby amplifying the travel amount of the vertical displacement of the vertical pole, enabling the laser transmitter to timely capture the change of the laser beam reflection signal caused by the change in the position of the laser receiver. Moreover, since the displacement change of the laser receiver is significantly amplified compared with the original displacement of the vertical pole, even if the laser signal attenuates due to environmental interference, the displacement amount of the vertical pole can be amplified to enable the laser transmitter and the laser receiver to cooperate with each other, thereby more accurately capturing the displacement change and improving the monitoring accuracy of the small settlement displacement.

[0029] 2. By setting up a clamping block, a clamping groove, a wedge-shaped block and a top block, and using the cooperation between the clamping block, the clamping groove and the wedge-shaped block, when the insertion rod moves towards the first accommodation cavity under the action of the second spring, the wedge-shaped block can smoothly embed into the clamping groove to realize the firm connection between the connecting plate and the connecting rod. When the displacement of the vertical pole exceeds the normal range, the connection between the connecting plate and the connecting rod can be automatically disconnected, thereby avoiding the laser receiver from bearing the force exceeding the design strength due to excessive displacement and playing a protective role for the laser receiver. Description of the drawings

[0030] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0031] Figure 2 is a top view structure schematic diagram of the present invention;

[0032] Figure 3 is a three-dimensional structure schematic diagram of the vertical pole, the laser transmitter, the bearing plate, the mounting rack, the laser receiver, the displacement amplification mechanism and the limit mechanism of the present invention;

[0033] Figure 4 is a three-dimensional structure schematic diagram of the vertical pole, the bearing plate, the mounting rack, the laser receiver and the displacement amplification mechanism of the present invention;

[0034] Figure 5Front view structural sectional schematic diagram of the vertical pole, mounting bracket, laser receiver, hoop, connection plate, connecting rod, first slide rail, transmission rod, second slide rail, sliding rod and connection column of the present invention;

[0035] Figure 6 Top view structural sectional schematic diagram of the hoop, connection plate and connecting rod of the present invention;

[0036] Figure 7 Exploded three-dimensional structural schematic diagram of the clamping block and inserting rod of the present invention;

[0037] Figure 8 Three-dimensional structural schematic diagram of the support plate and top block of the present invention;

[0038] Figure 9 Side view structural schematic diagram of the mounting bracket, top block, connection plate and clamping block of the present invention;

[0039] Figure 10 Three-dimensional structural schematic diagram of the bearing plate and limiting mechanism of the present invention;

[0040] Figure 11 Front view structural sectional schematic diagram of the bearing plate, fixing frame and limiting plate of the present invention;

[0041] Figure 12 Side view structural sectional schematic diagram of the bearing plate and limiting plate of the present invention.

[0042] In the figure:

[0043] 1, vertical pole; 2, cross bar; 3, connecting piece; 4, laser emitter; 5, bearing plate; 51, U-shaped groove; 52, bolt; 6, mounting bracket; 61, support plate; 62, top block; 7, laser receiver; 8, displacement amplification mechanism; 81, hoop; 82, connection plate; 821, first accommodation cavity; 822, first spring; 823, clamping block; 824, card slot; 83, connecting rod; 831, second accommodation cavity; 832, second spring; 833, inserting rod; 834, wedge-shaped block; 835, protective cover; 84, first slide rail; 85, transmission rod; 86, second slide rail; 87, sliding rod; 88, connection column; 881, connection block; 882, slider; 883, chute; 9, limiting mechanism; 91, fixing frame; 92, limiting plate; 921, shaft rod; 922, torsion spring; 923, arc-shaped groove; 93, push rod; 94, cavity; 95, hydraulic cavity; 96, piston rod; 97, third spring; 98, connecting plate; 99, pressing rod. Detailed implementation manners

[0044] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention is made with reference to the accompanying drawings of the specification.

[0045] Refer toFigures 1 - 5 , a laser-based high-formwork vertical rod displacement monitoring device provided by the present invention includes:

[0046] A support structure assembly, including a plurality of vertical rods 1, a plurality of horizontal rods 2, and a connecting member 3 for connecting the vertical rods 1 and the horizontal rods 2. The vertical rods 1 and the horizontal rods 2 are erected to form a high-formwork framework.

[0047] A laser monitoring assembly, including a laser emitter 4 installed above the vertical rod 1 and a laser receiver 7 arranged on the bearing structure below the vertical rod 1. The laser receiver 7 is located directly below the laser emitter 4. The laser receiver 7 is used to receive the laser beam emitted by the laser emitter 4. The bearing structure includes a bearing plate 5 and a mounting bracket 6 fixed on the bearing plate 5. The laser receiver 7 is installed on the mounting bracket 6. During operation, the laser emitter 4 emits a laser beam, and the laser beam passes through the space to reach the laser receiver 7 located below the vertical rod 1. Moreover, the laser emitter 4, the bearing plate 5, the mounting bracket 6, and the laser receiver 7 are all arranged on the vertical rods 1 at the four corner positions. In the high-formwork system, the vertical rods 1 at the corners play a key role because the vertical rods 1 at the corners not only bear the vertical load but may also be affected by lateral forces. Therefore, installing the laser emitter 4 and the laser receiver 7 on the vertical rods 1 at the four corners can effectively monitor the overall stability of the high-formwork framework. The bearing plate 5 is provided with a U-shaped groove 51 for the vertical rod 1 to pass through, and the bearing plate 5 is connected to the ground by bolts 52 to ensure that the bearing plate 5 can play a stable supporting role, while allowing the vertical rod 1 to displace due to settlement within a certain range without affecting the relative position stability of the laser receiver 7.

[0048] The displacement amplification mechanism 8 is arranged between the vertical rod 1 and the mounting frame 6 and is used to amplify the vertical displacement of the vertical rod 1 and transmit it to the laser receiver 7. The displacement amplification mechanism 8 includes a hoop 81 mounted on the vertical rod 1, a connecting plate 82 connected to the hoop 81, and a connecting rod 83 detachably connected to the connecting plate 82. The connecting rod 83 is slidably connected with a transmission rod 85 through a first slide rail 84 opened thereon. The first slide rail 84 is opened at one end of the connecting rod 83 away from the connecting plate 82. The transmission rod 85 is rotatably connected to the mounting frame 6 through a rotating shaft. The transmission rod 85 is slidably connected with a sliding rod 87 through a second slide rail 86 opened thereon. The second slide rail 86 is opened at one end of the transmission rod 85 away from the connecting rod 83. The sliding rod 87 is fixedly connected to the laser receiver 7 through a connecting column 88. The connecting column 88 is fixed at the bottom end of the laser receiver 7. When the vertical rod 1 has a vertical displacement, it drives the hoop 81 and the connecting plate 82 to move downward synchronously, and then drives the connecting rod 83 to move. At this time, the small vertical displacement of the vertical rod 1 is gradually amplified and transmitted to the laser receiver 7 through the coordinated action of the connecting rod 83, the first slide rail 84, the transmission rod 85 and the second slide rail 86, causing the laser receiver 7 to move upward, thereby amplifying the displacement distance of the vertical displacement of the vertical rod 1, enabling the laser transmitter 4 to timely capture the change in the laser beam reflection signal caused by the change in the position of the laser receiver 7. Since the displacement change of the laser receiver 7 is significantly amplified compared with the original displacement of the vertical rod 1, the laser transmitter 4 can more accurately monitor the small vertical settlement displacement of the vertical rod 1.

[0049] Among them, referring to Figure 4 , a connecting block 881 is fixed at the bottom end of the connecting column 88, and a slider 882 is fixed on the connecting block 881. A sliding groove 883 for the slider 882 to slide is opened on the mounting frame 6. Under the limiting action of the slider 882 and the sliding groove 883, the laser receiver 7 can move vertically upward through the action of the connecting rod 83, the first slide rail 84, the transmission rod 85 and the second slide rail 86, thereby ensuring the smoothness and accuracy of the connecting column 88 driving the laser receiver 7 to move, and further ensuring that the amplified displacement can be accurately transmitted.

[0050] Through the displacement amplification mechanism 8, even if the laser signal attenuates in intensity due to environmental interference, the displacement of the vertical rod 1 can be amplified, enabling the laser transmitter 4 and the laser receiver 7 to cooperate with each other, so as to more accurately capture the displacement change, improving the monitoring accuracy of the small settlement displacement and making up for the problem of the measurement accuracy decline caused by signal interference in the traditional monitoring method.

[0051] Furthermore, referring to Figures 5 - 7, a first accommodation cavity 821 is formed in the connecting plate 82. A clamping block 823 is slidably arranged in the first accommodation cavity 821. One end of the clamping block 823 and the first accommodation cavity 821 are fixedly provided with a first spring 822. A clamping groove 824 is formed in the clamping block 823. A second accommodation cavity 831 is formed in the connecting rod 83. A plug rod 833 is inserted into the second accommodation cavity 831. One end of the plug rod 833 and the second accommodation cavity 831 are fixedly provided with a second spring 832. The other end of the plug rod 833 is inserted into the first accommodation cavity 821 and is fixed with a wedge-shaped block 834. The wedge-shaped block 834 penetrates through the clamping groove 824, and the contact sides of the wedge-shaped block 834 and the clamping groove 824 are both arranged as inclined surfaces. Under normal conditions, the first spring 822 is in an extended state, and the second spring 832 is in a compressed state. By pulling the plug rod 833, the wedge-shaped block 834 is inserted into the first accommodation cavity 821. During the insertion process, the wedge-shaped block 834 penetrates through the clamping groove 824 and abuts against the clamping block 823 to slide in the first accommodation cavity 821 through the cooperation of the inclined surfaces, thereby squeezing the first spring 822 to compress. When the wedge-shaped block 834 completely penetrates through the clamping groove 824, the first spring 822 controls the clamping block 823 to reset, so that the clamping block 823 and the wedge-shaped block 834 are mutually clamped, completing the connection between the connecting plate 82 and the connecting rod 83.

[0052] Through the cooperation among the clamping block 823, the clamping groove 824 and the wedge-shaped block 834, when the plug rod 833 moves towards the first accommodation cavity 821 under the action of the second spring 832, the wedge-shaped block 834 can be smoothly embedded into the clamping groove 824, realizing the stable connection between the connecting plate 82 and the connecting rod 83, ensuring that during the normal construction process, the vertical displacement of the vertical rod 1 can be stably transmitted to the connecting rod 83 through the hoop 81 and the connecting plate 82, and then transmitted to the laser receiver 7 through the displacement amplification mechanism 8.

[0053] It should be noted that with reference to Figures 6 - 9, the other end of the clamping block 823 penetrates outside the first accommodation cavity 821, and its bottom surface is an inclined surface. A support plate 61 is fixed on the mounting bracket 6. An inner side of one end of the support plate 61 away from the mounting bracket 6 is fixed with a top block 62. The inner side of the top of the top block 62 is an inclined surface. When the vertical displacement of the vertical rod 1 occurs, the connecting plate 82 and the connecting rod 83 move downward synchronously. As the displacement gradually increases, when the clamping block 823 moves down to the position of the top block 62, the inclined surfaces of the two come into contact. Due to the mutual extrusion of the inclined surfaces, the clamping block 823 receives a horizontal component force, forcing the clamping block 823 to move towards the direction of the first spring 822, compressing the first spring 822. At the same time, the movement of the clamping block 823 changes the relative positions of the card slot 824 and the wedge block 834, and finally causes the wedge block 834 to disengage from the clamping engagement with the clamping block 823, thereby disconnecting the connection between the connecting plate 82 and the connecting rod 83. Through the cooperation of the above structure, when the displacement of the vertical rod 1 exceeds the normal range, the connection between the connecting plate 82 and the connecting rod 83 can be automatically disconnected, thus avoiding the laser receiver 7 from bearing a force exceeding the design strength due to excessive displacement, playing a protective role for the laser receiver 7, preventing key components from being damaged, and ensuring that the displacement monitoring device can still retain some functions in extreme cases, facilitating subsequent maintenance.

[0054] Among them, referring to Figure 6 , a protective cover 835 is fixed outside the insertion rod 833. The protective cover 835 is movably sleeved outside the connecting rod 83. The protective cover 835 can effectively block dust and sundries from entering the second accommodation cavity 831, avoiding abrasion of the insertion rod 833 and the inner wall of the second accommodation cavity 831 due to dust and other impurities, ensuring that the insertion rod 833 can move smoothly in the second accommodation cavity 831, and maintaining the reliability of the connection structure between the connecting plate 82 and the connecting rod 83.

[0055] Furthermore, referring to Figures 10 - 12, a symmetric limiting mechanism 9 is provided on the bearing plate 5. The limiting mechanism 9 includes a fixed frame 91 fixed on the bearing plate 5 and a limiting plate 92 rotatably connected to the fixed frame 91. The limiting plates 92 are symmetrically located on both sides of the vertical rod 1. A push rod 93 is hinged on the limiting plate 92, and the other end of the push rod 93 is inserted into a cavity 94 opened in the bearing plate 5. A hydraulic cavity 95 is also opened in the bearing plate 5. The hydraulic cavity 95 is filled with hydraulic oil and is communicated with the cavity 94. A piston rod 96 is inserted into the hydraulic cavity 95. A third spring 97 is fixedly provided between the bottom end of the piston rod 96 and the hydraulic cavity 95. A connecting plate 98 is fixed between the top ends of the two piston rods 96. A pressing rod 99 is fixed at the bottom end of the connecting plate 82. The pressing rod 99 is located above the connecting plate 98. The vertical rod 1 is the main load-bearing component, bearing the self-weight of the formwork and the load generated by concrete pouring. When the load exceeds the expectation, the vertical rod 1 will have a vertical displacement. When the displacement is within the normal range, relying on the cooperation of the laser monitoring component and the displacement amplification mechanism 8, the minute displacement change of the vertical rod 1 is real-time feedback. When the displacement of the vertical rod 1 exceeds the normal range, the connection between the connecting plate 82 and the connecting rod 83 can be automatically disconnected. At this time, if the vertical rod 1 continues to displace, the pressing rod 99 fixed at the bottom end of the connecting plate 82 will contact the connecting plate 98 and squeeze the connecting plate 98 downward. The connecting plate 98 drives the piston rod 96 to move downward in the hydraulic cavity 95, forcing the hydraulic oil to flow into the cavity 94, pushing the push rod 93 inserted into the cavity 94 to move upward, and then prompting the limiting plate 92 to rotate around the shaft rod 921. Since a torsion spring 922 is provided on the shaft rod 921, under normal working conditions, the torsion spring 922 maintains the limiting plate 92 in a relatively stable position to ensure that it does not interfere with the normal displacement monitoring of the vertical rod 1. However, when the pressing rod 99 contacts the connecting plate 98, the limiting plate 92 starts to rotate to limit the vertical rod 1.

[0056] Among them, referring to Figure 10 , an arc-shaped groove 923 is opened on one side of the limiting plate 92 close to the vertical rod 1. An anti-slip pad is provided in the arc-shaped groove 923. The anti-slip pad can be made of rubber. When the limiting plate 92 rotates close to the vertical rod 1, the surface of the vertical rod 1 contacts the anti-slip pad, and the anti-slip pad increases the friction between the two.

[0057] Through the provided limiting mechanism 9, when the displacement is abnormal, the limiting effect of the limiting plate 92 on the vertical rod 1 stops the continuous displacement of the vertical rod 1 to a certain extent and reduces the risk of collapse of the vertical rod 1 to a certain extent.

[0058] The working principle of a laser-based high-branch formwork vertical rod displacement monitoring device provided by the present invention: During the construction of the high-branch formwork, the support structure assembly is formed by a plurality of vertical rods 1 and horizontal rods 2 through connectors 3 to form a high-branch formwork framework. In the laser monitoring component, laser transmitters 4 located above the vertical rods 1 at the four corners emit laser beams, and laser receivers 7 on the lower bearing structure are responsible for receiving;

[0059] When the vertical pole 1 generates a vertical displacement under the action of the construction loads of the formwork and concrete pouring, the vertical pole 1 drives the hoop 81 and the connection plate 82 to move downward synchronously, thereby driving the connecting rod 83 to move. The small vertical displacement of the vertical pole 1 is gradually amplified and transmitted to the laser receiver 7 through the cooperation of the connecting rod 83, the first slide rail 84, the transmission rod 85 and the second slide rail 86. At this time, the slider 882 on the connecting block 881 at the bottom of the connecting column 88 slides in the chute 883, causing the laser receiver 7 to move vertically upward to ensure that the amplified displacement can be accurately transmitted to the laser emitter 4;

[0060] Under normal conditions of the connection plate 82 and the connecting rod 83, the first spring 822 is in an extended state, and the second spring 832 is in a compressed state. Pull the insertion rod 833 to insert the wedge block 834 into the first accommodation cavity 821. Through the cooperation of the inclined surfaces, the clamping block 823 squeezes the first spring 822. When the wedge block 834 completely penetrates the card slot 824, the first spring 822 controls the clamping block 823 to reset and engage with the wedge block 834 to complete the connection of the connection plate 82 and the connecting rod 83;

[0061] When the displacement of the vertical pole 1 exceeds the normal range, the connection plate 82 and the connecting rod 83 move downward synchronously. The clamping block 823 contacts the inclined surface of the top block 62. The clamping block 823 moves toward the first spring 822 under the horizontal component force. At this time, the second spring 832 pulls to disengage the wedge block 834 from the engagement with the clamping block 823 and disengages from the first accommodation cavity 821, causing the connection between the connection plate 82 and the connecting rod 83 to be automatically disconnected.

[0062] When the displacement of the vertical pole 1 exceeds the normal range and the connection between the connection plate 82 and the connecting rod 83 is disconnected, if the vertical pole 1 continues to displace, the pressure rod 99 contacts the connecting plate 98, squeezes the connecting plate 98 to drive the piston rod 96 to move downward in the hydraulic cavity 95, forcing the hydraulic oil to flow into the cavity 94, pushing the push rod 93 to move upward, prompting the limiting plate 92 to rotate around the shaft rod 921. The anti-slip pad in the arc-shaped groove 923 on the side of the limiting plate 92 close to the vertical pole 1 contacts the surface of the vertical pole 1 to increase the friction force, enabling the limiting plate 92 to respond to the displacement change of the vertical pole 1 in a timely manner, limit the vertical pole 1, and to a certain extent prevent the continuous displacement of the vertical pole 1 and reduce the risk of collapse of the vertical pole 1.

[0063] The present invention also provides a method for monitoring the displacement of high formwork vertical poles based on laser, using a monitoring device for the displacement of high formwork vertical poles based on laser, including the following steps:

[0064] S1: Assemble the monitoring device. Build a high formwork framework by connecting the vertical poles 1 and the crossbars 2 through the connectors 3. Install the laser emitter 4 above the vertical pole 1, and sequentially install the bearing plate 5, the mounting frame 6 and the laser receiver 7 below the vertical pole 1, and connect the displacement amplification mechanism 8;

[0065] S2: Initial calibration. Turn on the laser emitter 4 and adjust the position of the laser receiver 7 so that the laser beam accurately irradiates the laser receiver 7. Record the laser signal parameters received by the laser receiver 7 at this time as the initial data;

[0066] S3: Real-time monitoring. During the construction process of concrete pouring, continuously monitor the change of the laser signal received by the laser receiver 7. When the vertical displacement of the vertical rod 1 occurs, the displacement amplification mechanism 8 amplifies the displacement amount and transmits it to the laser receiver 7, resulting in a change in the position of the laser receiver 7, thereby causing a change in the received laser signal;

[0067] S4: Data analysis and warning. Monitor the displacement of the vertical rod 1 according to the change of the laser signal, analyze the calculated displacement amount, and when the displacement amount exceeds the safety threshold, send out a warning signal in a timely manner.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A laser-based high-support formwork pole displacement monitoring device, characterized in that: include: The supporting structure assembly includes a plurality of vertical poles, a plurality of horizontal poles and connectors for connecting the vertical poles and the horizontal poles, and the vertical poles and the horizontal poles are constructed to form a high formwork frame; The laser monitoring assembly includes a laser transmitter installed above the pole and a laser receiver arranged on a bearing structure below the pole, wherein the bearing structure includes a bearing plate and a mounting frame fixed on the bearing plate, and the laser receiver is mounted on the mounting frame; The displacement amplification mechanism is arranged between the vertical pole and the mounting frame, and is used to amplify the vertical displacement of the vertical pole and transmit it to the laser receiver. The displacement amplification mechanism includes a clamp installed on the vertical pole, a connecting plate connected to the clamp, and a connecting rod detachably connected to the connecting plate. The connecting rod is slidably connected to a transmission rod through an opened first slide rail, the transmission rod is rotatably connected to the mounting frame, the transmission rod is slidably connected to a sliding rod through an opened second slide rail, and the sliding rod is fixedly connected to the laser receiver through a connecting column.

2. The laser-based high-support formwork pole displacement monitoring device according to claim 1 is characterized in that: A connecting block is fixed at the bottom end of the connecting column, a sliding block is fixed on the connecting block, and a sliding groove for the sliding block to slide is provided on the mounting frame.

3. The laser-based high-support formwork pole displacement monitoring device according to claim 1, characterized in that: A first accommodating cavity is provided in the connecting plate, a clamping block is slidably arranged in the first accommodating cavity, a first spring is arranged between one end of the clamping block and the first accommodating cavity, and a clamping groove is provided on the clamping block; A second accommodating cavity is provided in the connecting rod, an insert rod is inserted in the second accommodating cavity, a second spring is provided between one end of the insert rod and the second accommodating cavity, the other end of the insert rod is inserted into the first accommodating cavity and a wedge block is fixed thereon, the wedge block passes through the slot, and the contact sides of the wedge block and the slot are both inclined.

4. The laser-based high-support formwork pole displacement monitoring device according to claim 3 is characterized in that: The other end of the card block passes through the outside of the first accommodating cavity, and its bottom surface is an inclined surface. A support plate is fixed on the mounting frame, and a top block is fixed on the inner side of one end of the support plate away from the mounting frame, and the inner side of the top of the top block is an inclined surface; When the vertical displacement occurs on the vertical pole, the connecting plate and the connecting rod move downward synchronously. When the clamping block moves downward to the top block position, the inclined surfaces of the two contact and squeeze the clamping block to move toward the first spring direction, so that the wedge block is disengaged from the clamping block and the connection between the connecting plate and the connecting rod is released.

5. The laser-based high-support formwork pole displacement monitoring device according to claim 4 is characterized in that: A protective cover is fixed outside the inserting rod, and the protective cover is movably sleeved outside the connecting rod.

6. The laser-based high-rise formwork pole displacement monitoring device according to claim 1, characterized in that: The laser transmitter, the bearing plate, the mounting frame and the laser receiver are all arranged on the vertical poles located at the four corners. The bearing plate is provided with a U-shaped groove for the vertical poles to pass through, and the bearing plate is connected to the ground by bolts.

7. The laser-based high-rise formwork pole displacement monitoring device according to claim 1, characterized in that: The bearing plate is provided with a symmetrical limiting mechanism, which includes a fixing frame fixed on the bearing plate and a limiting plate rotatably connected to the fixing frame, the limiting plates are symmetrically located on both sides of the vertical pole, a push rod is hinged on the limiting plate, and the other end of the push rod is inserted into the cavity opened in the bearing plate, and a hydraulic cavity is also opened in the bearing plate, and the hydraulic cavity is filled with hydraulic oil and is connected with the cavity; A piston rod is inserted into the hydraulic cavity, a third spring is arranged between the bottom end of the piston rod and the hydraulic cavity, a connecting plate is fixed to the top end of the piston rod, a pressure rod is fixed to the bottom end of the connecting plate, and the pressure rod is located above the connecting plate.

8. The laser-based high-rise formwork pole displacement monitoring device according to claim 7, characterized in that: The limit plate is rotatably connected to the fixing frame via a shaft rod, and a torsion spring is arranged on the shaft rod.

9. The laser-based high-support formwork pole displacement monitoring device according to claim 7, characterized in that: An arc groove is provided on one side of the limiting plate close to the vertical pole, and an anti-slip pad is arranged in the arc groove.

10. A method for monitoring displacement of a high-rise formwork pole based on laser, using the high-rise formwork pole displacement monitoring device based on laser as claimed in claim 1, characterized in that: The following steps are involved: S1: Assemble the monitoring device, build the vertical poles and horizontal poles through connectors to form a high formwork frame, install the laser transmitter above the vertical pole, install the bearing plate, mounting frame and laser receiver below the vertical pole in sequence, and connect the displacement amplification mechanism; S2: Initial calibration: turn on the laser transmitter, adjust the position of the laser receiver so that the laser beam accurately irradiates the laser receiver, and record the laser signal parameters received by the laser receiver as initial data; S3: Real-time monitoring. During the concrete pouring process, the laser signal received by the laser receiver is continuously monitored. When the vertical displacement of the pole occurs, the displacement amplification mechanism amplifies the displacement and transmits it to the laser receiver, causing the position of the laser receiver to change, thereby changing the received laser signal. S4: Data analysis and early warning, monitor the displacement of the pole according to the change of laser signal, analyze the calculated displacement, and issue an early warning signal in time when the displacement exceeds the safety threshold.

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