Silo slip form total cross-section deviation monitoring device and monitoring method

Abstract

The invention discloses a silo slip form total cross-section deviation monitoring device and method.The device comprises a plumb aligner assembly, an annular double-channel-steel supporting track and an annular reflecting plate, the plumb aligner assembly is arranged on the outer side of the bottom of a silo, and the bottom of the annular double-channel-steel supporting track surrounding the bottom of the silo by a circle is fixed to the ground; the bottom of the plumb aligner assembly is supported on the annular double-channel steel supporting track through a roller mechanism. The monitoring method comprises the following steps: 1) installing the plumb aligner assembly, the annular double-channel steel supporting track and the annular reflecting plate; (2) a laser beam emitted by the plumb aligner is reflected to the upper disc through the annular reflecting plate, and data of the distance between a reflecting light spot and the axis of the center hole is recorded; and (3) after the plumb aligner moves to the next position along the annular double-channel steel supporting track, the step (2) is repeated, and measurement of the total cross section of the silo is completed in sequence. The device provided by the invention is simple in structure and convenient to install, the monitoring method realizes the monitoring of the total cross-section deviation of the silo slip form, and the detection precision of the total cross-section deviation of the silo slip form is obviously improved.

Description

Technical Field

[0001] The invention relates to a device for detecting the tilt deviation in the construction of a circular outer wall building, in particular to a device and method for measuring the tilt deviation of a silo in the construction of a slipform, and belongs to the technical field of building construction. Background Art

[0002] Silo construction usually adopts the slipform process. The vertical deviation must be strictly monitored during the construction process. The deviation monitoring currently mainly adopts two methods: hanging hammer method and center point laser method.

[0003] The hanging hammer method is a method of obtaining silo displacement data by hanging a wire hammer on the external hanging frame of the silo slipform to the bottom of the silo, measuring the difference between the distance from the hanging hammer to the silo wall and the original distance at the bottom. This method is greatly affected by wind and weather. It is difficult for personnel to observe on rainy and snowy days. The hanging hammer swings back and forth and is difficult to stop. The observation accuracy is poor and the real-time displacement data cannot be determined in time. The hanging hammer is suspended under the slipform platform by a hanging rope. The deformation error of the slipform platform is also included in the silo displacement monitoring, resulting in inaccurate silo monitoring data. The hanging hammer setting is difficult to fix, there is an initial deviation, and the displacement of the entire cross-section of the silo cannot be accurately determined.

[0004] The center point laser method uses a laser vertically set at the center of the plane radiation cable on the slipform construction platform to emit a laser beam downward to determine the difference between the reference center position and the actual center position of the silo, thereby obtaining the silo deviation data. This method has the following defects:

[0005] 1. Only the center position of the silo can be determined by a laser pen, but the deviation of the entire cross-section of the silo cannot be determined.

[0006] 2. It is difficult to ensure that the laser pen is vertical. The height of the silo is generally 25 to 50 meters. A slight deviation at a height of tens of meters will be magnified to an error of several millimeters or even more than ten millimeters, affecting the deviation accuracy measurement.

[0007] 3. After the slipform construction platform starts to slide, personnel cannot reach the center of the plane radiation cable. Once the laser pen is blown crooked by strong wind or gets damp and malfunctions, it cannot be calibrated or repaired.

[0008] 4. The laser pen that only relies on the center of the silo cannot determine the deviation of the entire cross-section of the silo, and it is difficult to recover the laser pen. It will basically be damaged during the dismantling of the sliding platform, resulting in high sunk costs.

[0009] 5. When the radial cable of the sliding platform is offset in the silo, internal force is generated, resulting in axial stretching. When the elongation control value is greater than 9% according to the national standard, the deviation reaches 10 to 20 mm, resulting in an error in the center light spot emitted by the laser beam, which cannot truly reflect the verticality deviation of the silo. Summary of the invention

[0010] The purpose of the present invention is to provide a silo slipform full-section deviation monitoring device and monitoring method, which can efficiently and accurately measure the deviation of the silo slipform full-section.

[0011] The present invention is achieved through the following technical solutions:

[0012] A silo slipform full-section deviation monitoring device comprises a plumb line assembly, an annular double-slot steel support track and an annular reflector, wherein the plumb line assembly is arranged on the outer side of the bottom of the silo, and comprises a plumb line, a base, an upper disc, a lower support disc and several vertical support rods, the upper disc and the lower support disc are fixedly connected by several evenly distributed vertical support rods, a center hole is provided at the center of the upper disc, the base is fixed on the center of the lower support disc, and the bottom of the plumb line is fixed on the base; the bottom of the annular double-slot steel support track surrounding the bottom of the silo is fixed on the ground, and the bottom of the lower support disc is supported on the annular double-slot steel support track through a roller mechanism; the annular reflector is formed by splicing a plurality of arc-shaped plates, and the annular reflector is fixed on the lower side of the slipform construction platform on the outer side of the upper part of the silo under construction, and the lower side ring surface of the annular reflector in an ideal state is perpendicular to the axis of the center hole of the upper disc; the laser beam emitted by the plumb line light source passes vertically upward through the center hole of the upper disc, and is reflected to the upper disc through the lower side ring surface of the annular reflector in an actual state.

[0013] The purpose of the present invention can be further achieved by the following technical measures.

[0014] Furthermore, the annular double channel steel support rail includes an outer annular channel steel and an inner annular channel steel arranged back to back. The outer annular channel steel and the inner annular channel steel have the same structure and are both made of multiple pieces of arc-shaped channel steel bent into an arc shape and welded in sections. The lower end of the vertical support plate in the center of the lower side of the lower support disc is inserted into the gap between the outer annular channel steel and the inner annular channel steel, the middle part of the roller mechanism is respectively fixedly connected to the two ends of the vertical support plate, and the bottom of the roller mechanism is respectively supported on the top surface of the outer annular channel steel and the top surface of the inner annular channel steel.

[0015] Furthermore, the roller mechanism includes a roller shaft, two groups of rollers arranged in pairs and two roller support fork plates. The roller shaft is a stepped shaft structure, and the shaft sleeves are respectively fixed in the rollers. The middle part of the roller shaft is respectively vertically fixedly connected to the two ends of the vertical support plates, and the shaft sleeves of the rollers are respectively sleeved on the roller shafts. The inner sides of the rollers are respectively adjacent to the two sides of the vertical support plates; the outer sides of the rollers are respectively limited by shaft retaining rings; the square handles at both ends of the roller shaft are respectively inserted into the fork openings at the lower ends of the roller support fork plates, and the upper ends of the roller support fork plates are respectively vertically fixedly connected to the lower parts of the two sides of the lower support disc; the lower edges of the rollers are respectively supported on the top surfaces of the outer annular channel steel and the inner annular channel steel.

[0016] Furthermore, an annular scale plate with a 360° circumferential graduation scale is fixed to the outer side of the outer annular channel steel.

[0017] Furthermore, the outer diameter of the upper disc is greater than the outer diameter of the lower supporting disc, and a plurality of concentric circle notch marks with equal spacing are provided on the upper side surface of the upper disc.

[0018] Furthermore, both ends of the arc-shaped plate are bent vertically upward to form butt-jointed end edges, and adjacent butt-jointed end edges are fixedly connected in sequence by two groups of bolts and nuts to form an annular reflective plate; the arc-shaped plates are respectively fixed on the lower side surfaces of the lower cross bars, and the lower cross bars are radially evenly distributed on the lower side of the silo slipform construction platform.

[0019] Furthermore, the material of the curved plate is ABS engineering plastics. The surface roughness of the lower side of the curved plate is: Ra≤0.04mm.

[0020] A monitoring method for a silo sliding form full-section deviation monitoring device comprises the following steps:

[0021] 1) Install the annular double-channel steel support track: With the center of the silo as the center of the circle and the distance between the symmetry center of the spacing E between the outer annular channel steel and the inner annular channel steel and the center of the silo as the radius, construct the reference circle Φ of the annular double-channel steel support track, and the distance H between the symmetry center and the outer wall of the silo is 25 to 35 cm; then determine the positions of the outer annular channel steel and the inner annular channel steel on both sides of 1 / 2E centered on the circumference of the reference circle Φ. Then weld the corresponding arc-shaped channel steels into outer annular channel steels and inner annular channel steels section by section, and fix the bottom surfaces of the outer annular channel steel and the bottom surfaces of the inner annular channel steel to the ground with multiple sets of expansion bolts and nuts;

[0022] 2) The plumb line assembly and roller mechanism are supported on the top surface of the annular double-channel steel support track: insert the vertical support plate with the roller mechanism installed at the bottom into the spacing E between the outer annular channel steel and the inner annular channel steel until the lower edges of the two pairs of rollers are supported on the top surface of the outer annular channel steel and the top surface of the inner annular channel steel respectively; then vertically fix the upper side of the vertical support plate to the middle of the lower support disc, and then install the base and plumb line on the upper side of the lower support disc in sequence; then adjust the horizontality of the top surface of the plumb line so that the bubble of the level is centered, and the leveling of the plumb line is completed;

[0023] 3) Install the annular reflector: fix the arc-shaped plates to the lower side of the lower crossbars evenly distributed radially on the outer side of the upper part of the silo through several countersunk screws, and then fix the adjacent butt ends through two sets of bolts and nuts to form an annular reflector;

[0024] 4) Detect the single-point inclination angle of the silo circumference: Turn on the plumb line instrument, and the laser beam emitted by the plumb line light source passes vertically upward through the center hole of the upper disc to the annular reflector, and is reflected downward to the upper disc by the lower ring surface of the annular reflector. Measure the distance F between the center of the center hole and the reflected light point and record the deviation data of 1 / 2F of the silo. The ratio of 1 / 2F to the distance G from the annular reflector to the upper disc is: F / 2G=tgθ, so as to obtain the inclination angle θ of the silo outer wall at the first measuring point;

[0025] 5) Detect the inclination angle of multiple points on the circumference of the silo: As needed, divide the annular scale plate on the outside of the outer annular channel steel into several angle intervals, and then roll the roller mechanism at the bottom of the collimator assembly along the annular double-channel steel support track to the angle position of the next interval; repeat the process of step 4) at each angle position, and complete the measurement of the full-section deviation of each measuring point of 360° on the lower side of the silo slipform construction platform in turn.

[0026] The plumb bob assembly of the present invention moves along the annular double-slot steel support track through the roller mechanism on its lower side to complete the displacement measurement of multiple points on the circumference of the full-section silo slipform, thereby solving the problem that the existing technology can only monitor the displacement of the silo by arranging a limited number of points to obtain data for speculation, but cannot display the real displacement of the full section. It also solves the problem that the displacement detection of the hanging hammer is greatly affected by the weather and the swing of the hanging hammer leads to inaccurate monitoring data, as well as the problem that the displacement measurement of the hanging hammer hanging on the slipform platform is large due to the deformation of 1 to 10 mm generated during the sliding process of the slipform platform. The present invention uses the vertically upwardly emitted laser beam of the plumb bob to be reflected to the upper disk of the plumb bob assembly through the annular reflector fixed on the lower side of the slipform construction platform on the outer side of the upper part of the silo under construction. By measuring the offset between the reflected light point and the center of the plumb bob assembly, the inclination angle of the silo under construction can be calculated. The device of the present invention has a simple structure and is easy to install. The monitoring method is not affected by the weather. It realizes the full-section deviation monitoring of the silo slipform, eliminates the unfavorable factors of increased detection errors caused by the sliding of the slipform platform and climatic factors, and significantly improves the accuracy of the full-section deviation detection of the silo slipform.

[0027] Advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments thereof, which are given by way of example only with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the monitoring device of the present invention installed on the upper and lower parts of a silo under construction;

[0029] Figure 2 yes Figure 1 AA section view;

[0030] Figure 3 yes Figure 1 A magnified view of part I;

[0031] Figure 4 yes Figure 2 B-axis enlarged view:

[0032] Figure 5 yes Figure 3 The enlarged view of part II;

[0033] Figure 6 yes Figure 5 C-direction enlarged view;

[0034] Figure 7 is a partial enlarged expanded view of the annular reflector;

[0035] Figure 8 It is a schematic diagram of the present invention for measuring the inclination of a silo under construction. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] like Figure 1 As shown, the annular slipform 10 is located on the inner and outer sides of the upper end of the silo 20 being cast, a silo slipform construction platform 30 is provided on the top of the annular slipform 10, and slipform hanging scaffolding 40 is provided on the inner and outer sides of the lower part of the annular slipform 10 to facilitate the construction workers' operation.

[0038] like Figure 1 to Figure 7 As shown, the silo slipform full-section deviation monitoring device of the present invention comprises a plumb bob assembly 1, an annular double-slot steel support track 2 and an annular reflector 3. The plumb bob assembly 1 is arranged outside the bottom of the silo 10, and comprises a plumb bob 11, a base 12, an upper disc 13, a lower support disc 14 and four vertical support rods 15. The upper disc 13 and the lower support disc 14 are fixedly connected by four evenly distributed vertical support rods 15. The center of the upper disc 13 is provided with a center hole 131 for emitting a laser beam. The base 12 is fixed to the center of the lower support disc 14, and the bottom of the plumb bob 11 is fixed to the base 12. The bottom of the annular double-slot steel support track 2 surrounding the bottom of the silo 10 is fixed to the ground, and the bottom of the lower support disc 14 is supported on the annular double-slot steel support track 2 by a roller mechanism 16. The outer diameter of the upper disc 13 is larger than that of the lower supporting disc 14. A plurality of concentric circle notch marks 131 with an interval of 3 mm are arranged on the upper side of the upper disc to facilitate identification of the actual offset distance of the reflected light spot.

[0039] like Figure 3 As shown, the annular double channel steel support track 2 includes an outer annular channel steel 21 and an inner annular channel steel 22 arranged back to back. The outer annular channel steel 21 and the inner annular channel steel 22 have the same structure and are both formed by welding multiple pieces of arc-shaped channel steel 211 bent into an arc. The lower end of the vertical support plate 141 at the center of the lower side of the lower support disc 14 is inserted into the spacing E between the outer annular channel steel 21 and the inner annular channel steel 22. The middle part of the roller mechanism 16 is respectively fixedly connected to the two ends of the vertical support plate 141, and the bottom of the roller mechanism 16 is respectively supported on the top surface of the outer annular channel steel 21 and the top surface of the inner annular channel steel 22.

[0040] like Figure 5 and Figure 6As shown, the roller mechanism 16 includes a roller shaft 161, two groups of rollers 162 arranged in pairs, and two roller support fork plates 163. The roller shaft 161 is a stepped shaft structure, and the sleeves 164 are respectively fixed in the rollers 162. The middle of the roller shaft 161 is respectively vertically fixedly connected to the two ends of the vertical support plate 141. The sleeves 164 of the rollers 162 are respectively sleeved on the roller shaft 161, and the inner sides of the rollers 162 are respectively adjacent to the two sides of the vertical support plate 141. The outer sides of the rollers 162 are respectively limited by the shaft retaining rings 165. The square handles 1611 at both ends of the roller shaft 161 are respectively inserted into the lower end forks 1631 of the roller support fork plates 163, and the upper ends of the roller support fork plates 163 are respectively vertically welded to the lower parts of the two sides of the lower support disc 14. The lower edges of the rollers 162 are respectively supported on the top surfaces of the outer annular channel steel 21 and the inner annular channel steel 22.

[0041] like Figure 4 As shown, an annular scale plate 23 with a 360° circumference is fixed to the outside of the outer annular channel steel 21. The resolution of the scale plate 231 in this embodiment is 2.5°. When the roller mechanism 16 carries the plumb line assembly 1 and moves along the curved track surface of the annular double-channel steel support track 2, the annular scale plate 23 can clearly indicate the real-time position of the plumb line assembly 1, which is convenient for monitoring the tilt deviation data of the point of the silo 20 being cast, and is convenient for subsequent construction correction.

[0042] like Figure 2 and Figure 7 As shown, the annular reflector 3 is formed by splicing multiple arc plates 31, and the two ends of the arc plates 31 are bent vertically upward to form butt ends 311, and the adjacent butt ends 311 are fixedly connected in sequence by two sets of bolt and nut groups 32 to form an annular reflector 3. The arc plates 31 are fixed to the lower side of the lower cross bar 4 by countersunk screws 33, and the lower cross bar 4 is radially evenly distributed on the lower side of the silo slipform construction platform 30. The material of the arc plate 31 is ABS engineering plastic, and the surface roughness of the lower side of the arc plate 31 is: Ra≤0.04mm, which can significantly improve the reflection effect of the laser beam, making the reflected light spot falling on the upper disc 13 clearer.

[0043] In an ideal state, the lower side surface of the annular reflector 3 is perpendicular to the axis of the center hole of the upper disk 13. The laser beam emitted by the line light source of the plumb line 11 passes vertically upward through the center hole 131 of the upper disk 13 and is reflected onto the upper disk 13 by the lower side surface of the annular reflector 3 in an actual state.

[0044] A monitoring method for a silo sliding form full-section deviation monitoring device comprises the following steps:

[0045] 1) Install the annular double-channel steel support rail 2, such as Figure 5As shown, with the center of the silo 20 as the center of the circle, and the distance between the symmetric center of the spacing E between the outer annular channel steel and the inner annular channel steel and the center of the silo 20 as the radius, a reference circle Φ of the annular double channel steel support track 2 is constructed, and the distance H between the symmetric center and the outer wall 201 of the silo is 25 to 35 cm; then the positions of the outer annular channel steel 21 and the inner annular channel steel 22 are determined on both sides of 1 / 2E centered on the circumference of the reference circle Φ. Then, the corresponding arc-shaped channel steel 211 is welded section by section to form the outer annular channel steel 21 and the inner annular channel steel 22, and the bottom surface of the outer annular channel steel 21 and the bottom surface of the inner annular channel steel 22 are fixed to the ground with multiple groups of expansion bolts and nuts 24.

[0046] 2) The assembled plumb bob assembly 1 and roller mechanism 16 are supported on the top surface of the annular double-channel steel support track 2, and the vertical support plate 141 with the roller mechanism 16 installed at the bottom is inserted into the spacing E between the outer annular channel steel 21 and the inner annular channel steel 22, until the lower edges of the two pairs of rollers 162 are supported on the top surfaces of the outer annular channel steel 21 and the inner annular channel steel 22, respectively. Then the upper side of the vertical support plate 141 is vertically fixedly connected to the middle of the lower support disc 14, and the base 12 and the plumb bob 11 are sequentially installed on the upper side of the lower support disc 14. Then adjust the horizontality of the top surface of the plumb bob 11 so that the bubble of the level is centered, and the leveling of the plumb bob 11 is completed.

[0047] 3) Install the circular reflector 3: Figure 3 and Figure 7 As shown, the arc plate 31 is fixed in sequence to the lower side of the lower cross bar 4 radially evenly distributed on the outer side of the upper part of the silo 20 by two countersunk screws 33, and then the adjacent butt end edges 311 are fixed in sequence by two groups of bolts and nuts 32 to form an annular reflector 3.

[0048] 4) If Figure 1 , Figure 2 and Figure 8 As shown, the single-point inclination angle of the silo 20 is detected: the plumb line 11 is turned on, and the laser beam emitted by the plumb line light source passes vertically upward through the center hole 131 of the upper disk 13 to the annular reflector 3, and is reflected downward to the upper disk 13 by the lower ring surface of the annular reflector 3. The distance F between the center of the center hole 131 and the reflected light point is measured and the offset data of 1 / 2F of the silo 20 is recorded. The ratio of 1 / 2F to the distance G from the annular reflector to the upper disk is: F / 2G=tgθ, thereby obtaining the inclination angle θ of the silo outer wall at the first measuring point.

[0049] 5) As needed, the annular scale plate 23 outside the outer annular channel steel 21 is evenly divided into several angle intervals, and then the roller mechanism 16 at the bottom of the plumb line assembly 1 is rolled along the annular double channel steel support track 2 to the angle position of the next interval. The process of step 4) is repeated at each angle position to sequentially complete the measurement of the full-section deviation of each measuring point of 360° on the lower side of the silo slipform construction platform.

[0050] Figure 7 In the figure, the outer wall 201 of the silo is tilted by θ°. According to the theorem that the corresponding angles of similar triangles are equal, the inclination angle of the annular reflector 3 is also θ°. The laser beam BF emitted vertically upward by the plumb line 11 is reflected by the annular reflector 3 and reaches the upper disk 13 via FD. The normal line FC of the annular reflector is parallel to the outer wall HA of the silo. The incident angle, the reflection angle and the inclination angle are equal to θ°. The distance between the emission point B and the reflected light point D is F. Since △FBC is congruent to △AHJ, BC=HJ.

[0051] In engineering practice, when the slipform height reaches about 15 meters, the verticality deviation reaches the point where it needs to be corrected. The relevant specifications stipulate that L2 ≤ 30mm and not more than one thousandth of the height. Figure 7 In the figure, CD>BC. Since the inclination angle θ is very small, the difference between CD and BC can be ignored in engineering. Therefore, it can be considered that CD=BC, that is, in the right angle △FBD, 1 / 2 of the distance BD from the center B of the upper disk 13 to the reflecting point D is the deviation value of the silo 20. Through F / 2G=tgθ, the inclination angle θ of the silo can be obtained.

[0052] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A silo sliding form full-section deviation monitoring device, characterized in that: It includes a plumb line assembly, an annular double-slot steel support track and an annular reflector. The plumb line assembly is arranged on the outer side of the bottom of the silo, and includes a plumb line, a base, an upper disc, a lower support disc and several vertical support rods. The upper disc and the lower support disc are fixedly connected by several evenly distributed vertical support rods. A center hole is provided at the center of the upper disc, the base is fixed on the center of the lower support disc, and the bottom of the plumb line is fixed on the base; the bottom of the annular double-slot steel support track surrounding the bottom of the silo is fixed on the ground, and the bottom of the lower support disc is supported on the annular double-slot steel support track through a roller mechanism; the annular reflector is spliced ​​by multiple arc plates, and the annular reflector is fixed on the lower side of the slipform construction platform on the outer side of the upper part of the silo under construction. In an ideal state, the lower side ring surface of the annular reflector is perpendicular to the axis of the center hole of the upper disc; the laser beam emitted by the plumb line light source passes vertically upward through the center hole of the upper disc, and is reflected to the upper disc through the lower side ring surface of the annular reflector in an actual state.

2. The silo sliding form full-section deviation monitoring device according to claim 1, characterized in that: The annular double-channel steel support track includes an outer annular channel steel and an inner annular channel steel arranged back to back. The outer annular channel steel and the inner annular channel steel have the same structure and are both made of multiple pieces of arc-shaped channel steel bent into an arc shape and welded in sections. The lower end of the vertical support plate in the center of the lower side of the lower support disc is inserted into the gap between the outer annular channel steel and the inner annular channel steel, the middle part of the roller mechanism is respectively fixedly connected to the two ends of the vertical support plate, and the bottom of the roller mechanism is respectively supported on the top surface of the outer annular channel steel and the top surface of the inner annular channel steel.

3. The silo sliding form full-section deviation monitoring device according to claim 2, characterized in that: The roller mechanism includes a roller shaft, two groups of rollers arranged in pairs and two roller supporting fork plates. The roller shaft is a stepped shaft structure, and the shaft sleeves are respectively fixed in the rollers. The middle part of the roller shaft is respectively vertically fixedly connected to the two ends of the vertical supporting plates, and the shaft sleeves of the rollers are respectively sleeved on the roller shafts, and the inner sides of the rollers are respectively adjacent to the two sides of the vertical supporting plates; the outer sides of the rollers are respectively limited by shaft retaining rings; the square handles at both ends of the roller shaft are respectively inserted into the fork openings at the lower ends of the roller supporting fork plates, and the upper sides of the roller supporting fork plates are respectively vertically fixedly connected to the lower parts of the two sides of the lower supporting disc; the lower edges of the rollers are respectively supported on the top surfaces of the outer annular channel steel and the inner annular channel steel.

4. The silo sliding form full-section deviation monitoring device according to claim 2, characterized in that: An annular scale plate with a 360° circumferential graduation scale is fixed on the outer side of the outer annular channel steel.

5. The silo sliding form full-section deviation monitoring device according to claim 1, characterized in that: The outer diameter of the upper disc is larger than the outer diameter of the lower supporting disc, and a plurality of concentric circle notch marks with equal spacing are arranged on the upper side surface of the upper disc.

6. The silo sliding form full-section deviation monitoring device according to claim 1, characterized in that: Both ends of the arc plate are bent vertically upward to form butt ends, and adjacent butt ends are fixedly connected in sequence by two groups of bolts and nuts to form an annular reflective plate; the arc plates are fixed on the lower side of the lower cross bar, and the lower cross bar is radially evenly distributed on the lower side of the silo slipform construction platform.

7. The silo sliding form full-section deviation monitoring device according to claim 1, characterized in that: The material of the curved plate is ABS engineering plastic. The surface roughness of the lower side of the curved plate is: Ra≤0.04mm.

8. A monitoring method using the silo sliding form full-section deviation monitoring device according to any one of claims 1 to 7, characterized in that: The following steps are involved: 1) Install the annular double-channel steel support track: With the center of the silo as the center of the circle and the distance between the symmetry center of the spacing E between the outer annular channel steel and the inner annular channel steel and the center of the silo as the radius, construct the reference circle Φ of the annular double-channel steel support track, and the distance H between the symmetry center and the outer wall of the silo is 25 to 35 cm; then determine the positions of the outer annular channel steel and the inner annular channel steel on both sides of 1 / 2E centered on the circumference of the reference circle Φ. Then weld the corresponding arc-shaped channel steels into outer annular channel steels and inner annular channel steels section by section, and fix the bottom surfaces of the outer annular channel steel and the bottom surfaces of the inner annular channel steel to the ground with multiple sets of expansion bolts and nuts; 2) The plumb line assembly and roller mechanism are supported on the top surface of the annular double-channel steel support track: insert the vertical support plate with the roller mechanism installed at the bottom into the spacing E between the outer annular channel steel and the inner annular channel steel until the lower edges of the two pairs of rollers are supported on the top surface of the outer annular channel steel and the top surface of the inner annular channel steel respectively; then vertically fix the upper side of the vertical support plate to the middle of the lower support disc, and then install the base and plumb line on the upper side of the lower support disc in sequence; then adjust the horizontality of the top surface of the plumb line so that the bubble of the level is centered, and the leveling of the plumb line is completed; 3) Install the annular reflector: fix the arc-shaped plates to the lower side of the lower crossbars evenly distributed radially on the outer side of the upper part of the silo through several countersunk screws, and fix the adjacent butt ends through a plurality of bolt and nut groups to form an annular reflector; 4) Detect the single-point inclination angle of the silo circumference: Turn on the plumb line instrument, and the laser beam emitted by the plumb line light source passes vertically upward through the center hole of the upper disc to the annular reflector, and is reflected downward to the upper disc by the lower ring surface of the annular reflector. Measure the distance F between the center of the center hole and the reflected light point and record the silo 1 / 2F deviation data. The ratio of 1 / 2F to the distance G from the annular reflector to the upper disc is: F / 2G=tgθ, thereby obtaining the inclination angle θ of the silo outer wall at the first measuring point; 5) Detect the inclination angle of multiple points on the circumference of the silo: as needed, divide the annular scale plate on the outside of the outer annular channel steel into several angle intervals, and then roll the roller mechanism at the bottom of the plumb line assembly along the annular double-channel steel support track to the angle position of the next interval; repeat the process of step 4) at each angle position, and complete the measurement of the full-section deviation of each measuring point at 360° on the lower side of the silo slipform construction platform in turn.

Images