Lifting module and on-site material level simulation device

Abstract

The utility model discloses a lifting module and an on-site material level simulation device, and belongs to the technical field of material level measurement. The lifting module comprises a rack, a lifting mechanism and an anti-shaking mechanism, the rack comprises a base, a stand column and a cross beam, the lifting mechanism comprises a lifting driver, a guide wheel, a steel wire rope and a lifting platform, the lifting driver is fixed to the base, the guide wheel is fixed to the cross beam, the steel wire rope winds around the guide wheel, one end of the steel wire rope is connected with the lifting driver, and the other end of the steel wire rope is connected with the anti-shaking mechanism; the other end is connected with the lifting platform; anti-shaking mechanisms are arranged on the sides, opposite to the stand columns, of the lifting platforms, and the anti-shaking mechanisms are in sliding and rolling fit with the corresponding stand columns to reduce shaking of the lifting platforms in the lifting process, so that the lifting module has the advantages of being light in weight, convenient to carry and the like, stable lifting of the lifting platforms can be guaranteed, and the service life of the lifting platforms is prolonged. And the on-site in-situ calibration requirement of the spatial reflective level meter can be met.

Description

Technical Field

[0001] The present application relates to the technical field of level measurement, and in particular to a lifting module and an on-site level simulation device. Background Art

[0002] Currently, with the increasing demand for level measurement in fields such as shipping, petroleum, and chemicals, reflective level meters, such as radar, have experienced rapid development. To improve the in-situ calibration accuracy of reflective level meters, existing technologies address the challenge of establishing a standard calibration environment on-site by installing a secondary tube bypassing the waveguide of the reflective level meter and installing a reflective plate in the secondary tube to provide a reference. However, for spatial reflective level meters that lack a waveguide, it is difficult to install additional waveguides and secondary tubes on existing large-scale capacity measuring instruments, making in-situ calibration of spatial reflective level meters difficult.

[0003] In the related art, a field level simulation device is provided, including a lifting module and a reflector leveling module. The reflector leveling module is used to install the reflector and can adjust the horizontal posture of the reflector. The lifting module is used to lift and lower the reflector leveling module to realize the construction of an on-site in-situ calibration environment for the spatial reflective level meter.

[0004] However, most lifting modules in related technologies use single-arm vertical lift, scissor-type, or screw-type lifting modules. These lifting modules are heavy and carry heavy loads, making them difficult to carry. While wire rope lifting modules offer advantages such as light weight and portability, they lack horizontal posture control and cannot meet the requirements for on-site in-situ calibration of spatial reflective level meters.

[0005] Therefore, there is an urgent need for an on-site level simulation device to solve the above problems. Utility Model Content

[0006] The purpose of this application is to solve or at least alleviate some or all of the above problems. To this end, the purpose of this application is to provide a lifting module and an on-site level simulation device that have the advantages of being light weight and easy to carry, and can also ensure the smooth lifting of the lifting platform, which can meet the on-site in-situ calibration requirements of spatial reflective level meters.

[0007] In order to achieve the above objectives, this application adopts the following technical solutions:

[0008] In a first aspect, a lifting module is provided, comprising:

[0009] The frame comprises a base, columns and beams, wherein at least two of the columns are fixed to the base and extend vertically, and the beams are fixed to the columns;

[0010] A lifting mechanism, comprising a lifting drive, a guide wheel, a steel wire rope, and a lifting platform, wherein the lifting drive is fixed to the base, the guide wheel is fixed to the crossbeam, the steel wire rope passes over the guide wheel, and one end of the steel wire rope is connected to the lifting drive, and the other end thereof is connected to the lifting platform;

[0011] An anti-sway mechanism is provided on the side of the lifting platform opposite to the column, and each anti-sway mechanism slides and rolls with the corresponding column.

[0012] As an optional solution for the lifting module, the anti-sway mechanism includes a bracket and a sliding member, the bracket is fixed to the lifting platform, the sliding member is fixed to the bracket, and the column has a sliding groove that slides with the sliding member and extends in the vertical direction.

[0013] As an optional solution for the lifting module, the anti-sway mechanism also includes a rolling assembly, which includes a fixed plate and a sphere. The fixed plate is fixed to the bracket, and the fixed plate has a spherical annular groove for accommodating the sphere, and the spherical surface of the sphere abuts against the column.

[0014] As an optional solution for the lifting module, the rolling assembly has two groups of ball groups, each of the ball groups has at least two balls, and the two groups of ball groups are respectively located on both sides of the sliding groove.

[0015] As an optional solution for the lifting module, the sliding parts are provided above and below the rolling assembly.

[0016] As an optional solution for the lifting module, the bracket includes a connecting member, a mounting member and an elastic member. The connecting member is fixed to the lifting platform. The mounting member is arranged parallel to and spaced apart from the connecting member and is used to fix the sliding member and the rolling assembly. The elastic member is located between the mounting member and the connecting member, and the elastic deformation direction of the elastic member is the same as the arrangement direction of the mounting member and the connecting member.

[0017] As an optional solution for the lifting module, the bracket also includes a guide member, one end of which is fixed to the mounting member, and the other end thereof is slidably engaged with the connecting member, and the elastic member is sleeved outside the guide member.

[0018] As an optional solution for the lifting module, the bracket further includes a damping bearing, which is fixed on the connecting member and slidingly engaged with the guide member.

[0019] As an optional solution for the lifting module, the lifting mechanism further includes a lifting ring, at least three of the lifting rings are evenly spaced and fixed on the lifting platform, the wire rope has a plurality of sub-cables, and each sub-cable is connected to each of the lifting rings in a one-to-one correspondence.

[0020] In the second aspect, a field level simulation device is provided, including a reflective plate, a reflective plate leveling module and the lifting module as described above, wherein the reflective plate is installed on the leveling platform of the reflective plate leveling module, and the reflective plate leveling module is installed on the lifting platform and is used to adjust the horizontal posture of the reflective plate.

[0021] The beneficial effects of this application are:

[0022] The lifting module provided by the present application includes a frame, a lifting mechanism and an anti-sway mechanism. The frame includes a base, a column and a crossbeam. At least two columns are fixed on the base and extend in the vertical direction, and the crossbeam is fixed on the column; the lifting mechanism includes a lifting drive, a guide wheel, a wire rope and a lifting platform. The lifting drive is fixed on the base, the guide wheel is fixed on the crossbeam, the wire rope passes around the guide wheel, and one end of the wire rope is connected to the lifting drive, and the other end is connected to the lifting platform; an anti-sway mechanism is provided on the side of the lifting platform opposite to the column, and each anti-sway mechanism slides and rolls with its corresponding column to reduce the shaking of the lifting platform during the lifting process, so that the lifting module not only has the advantages of light weight and easy to carry, but also can ensure the smooth lifting and lowering of the lifting platform, and can meet the on-site in-situ calibration requirements of spatial reflection level meters.

[0023] The on-site level simulation device provided in this application uses the above-mentioned lifting module, which has the advantages of being light weight and easy to carry, and can also ensure the smooth lifting of the lifting platform, which can meet the on-site in-situ calibration requirements of spatial reflective level meters. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present application and these drawings without any creative work.

[0025] Figure 1 The figure shows a schematic structural diagram of an on-site level simulation device provided in an embodiment of the present application.

[0026] Figure 2 A structural schematic diagram of the lifting module provided in an embodiment of the present application is shown.

[0027] Figure 3A structural schematic diagram of the lifting platform provided in an embodiment of the present application is shown.

[0028] Figure 4 A structural schematic diagram of the base provided in an embodiment of the present application is shown.

[0029] Figure 5 Shown Figure 4 Schematic diagram of the partial structure of the middle base.

[0030] Figure 6 A schematic diagram of the partial structure of the lifting platform and columns provided in an embodiment of the present application is shown.

[0031] Figure 7 Shown Figure 6 Schematic diagram of the structure of the anti-sway mechanism.

[0032] Figure 8 Shown Figure 6 Schematic cross-sectional view of the anti-sway mechanism in one direction.

[0033] Figure 9 Shown Figure 6 Schematic cross-sectional view of the anti-sway mechanism in another direction.

[0034] Figure 10 A schematic structural diagram of the reflector leveling module provided in this application is shown.

[0035] Figure 11 Shown Figure 10 Schematic diagram of the structure of the middle leveling mechanism.

[0036] Figure 12 Shown Figure 11 Schematic diagram of partial cross-section of the middle leveling mechanism.

[0037] Figure 13 A schematic diagram of the installation orientation of a spatial reflective level meter and an on-site level simulation device provided in an embodiment of the present application is shown.

[0038] Figure 14 A schematic diagram of a reflector plate leveling module provided in an embodiment of the present application is shown.

[0039] Figure 15 A schematic diagram of a process for adjusting the horizontal posture of a reflector provided in an embodiment of the present application is shown.

[0040] Reference numerals:

[0041] 100. Spatial reflective level meter;

[0042] 1. Lifting module; 11. Frame; 111. Base; 1111. Bottom frame; 1112. Column fixings; 112. Column; 1121. Slide; 113. Crossbeam; 1131. Beam hole; 12. Lifting mechanism; 121. Lifting platform; 122. Lifting drive assembly; 1221. Lifting drive; 1222. Guide wheel; 1223. Wire rope; 12231. Sub-rope; 1224. Limiting ring; 1225. Limiting member; 122 6. Bracket; 123. Lifting ring; 13. Frame leveling assembly; 131. Fixing member; 132. Lifting support member; 133. Handwheel; 1331. Wheel; 1332. Lever; 14. Anti-sway mechanism; 141. Bracket; 1411. Connecting member; 1412. Mounting member; 1413. Elastic member; 1414. Guide member; 1415. Damping bearing; 142. Sliding member; 143. Rolling assembly; 1431. Fixing plate; 1432. Sphere;

[0043] 2. Reflector leveling module; 21. Leveling platform; 211. Frame; 212. Mounting seat; 213. First connecting member; 214. Second connecting member; 215. Fixed arm; 22. Leveling mechanism; 22a. First leveling mechanism; 22b. Second leveling mechanism; 22c. Third leveling mechanism; 221. Ball joint assembly; 2211. Ball joint seat; 22111. Fixed seat; 22112. First cover plate; 22113. Second cover plate; 2212. Ball head member; 22121. Connecting portion; 22122. Spherical portion; 2213. Sleeve; 222. Leveling drive assembly; 2221. Leveling drive; 2222. Lifting member; 22221. Anti-rotation protrusion;

[0044] 3. Reflector;

[0045] 41. Dual-axis tilt sensor; 42. Control module. DETAILED DESCRIPTION

[0046] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the foregoing drawings.

[0047] In this application, the terms "comprises," "includes," "has," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0048] In this application, the term "and / or" describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this application generally indicates that the related objects are in an "and / or" relationship.

[0049] In this application, the terms "connect," "combine," "couple," and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without an intermediary, and an indirect connection refers to two parts or components being connected to at least one intermediary, with the two parts or components being connected via the intermediary. Furthermore, "connect" and "couple" are not limited to physical or mechanical connections or couplings and may include electrical connections or couplings.

[0050] In this application, it will be understood by those skilled in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions are inclusive of the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of the specific value, the tolerance associated with the specific value caused by manufacturing, assembly, and use, etc. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms can refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value.

[0051] In this application, it will be understood by those skilled in the art that the function performed by an assembly can be performed by one assembly, multiple assemblies, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one assembly, or a combination of multiple parts.

[0052] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to the other element "upper" or "lower", but also be indirectly connected to the other element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, below can include directly below, lower left, lower right, lower front and lower back, etc.

[0053] The field level simulation device provided in this application is used for in-situ calibration of spatial reflective level meters. It can provide a measurement reference target that can cover the entire calibration height range for the spatial reflective level meter to be calibrated and length standards such as laser interferometers on site, ensuring that the geometric relationship between the beam axis of the spatial reflective level meter to be calibrated, the measurement axis of the length standard such as the laser interferometer, and the measurement reference target meets the standard one-dimensional length calibration requirements.

[0054] It should be noted that the field level simulation device provided by this application solves the current technical problem of lacking a practical, stable, reliable, and portable field level simulation device for in-situ calibration of spatial reflective level meters. Compared to manual in-situ calibration, this field level simulation device can achieve traceability of the measurement value of spatial reflective level meters under in-situ conditions. Furthermore, this field level simulation device can be used in a standard environment for in-situ calibration of spatial reflective level meters in environments such as ships and storage tanks.

[0055] Figure 1 FIG. 1 shows a schematic structural diagram of an on-site level simulation device provided in an embodiment of the present application. Figure 1 As shown, the on-site level simulation device includes a lifting module 1, a reflector leveling module 2, a reflector 3 and a control system. The lifting module 1 is used to adjust the height of the reflector 3, and the reflector leveling module 2 cooperates with the control system to adjust the horizontal posture of the reflector 3 to ensure that the geometric relationship among the beam axis of the spatial reflective level meter to be calibrated, the measuring axis of a length standard such as a laser interferometer, and the measurement reference target meets the calibration requirements of the standard one-dimensional length, thereby improving the in-situ calibration accuracy of the spatial reflective level meter.

[0056] In this embodiment, the control system includes a control module 42 and a dual-axis tilt sensor 41. The dual-axis tilt sensor 41 is installed on the reflector 3. The control module 42 can control the reflector leveling module 2 to adjust the horizontal posture of the reflector 3 according to the detection results of the dual-axis tilt sensor 41.

[0057] For spatial reflective level meters, the key technical difficulty of the lifting module 1 lies not in optimizing the lifting speed or improving the load-bearing capacity, but in improving the stability of the lifting module 1, ensuring the precise control of its horizontal posture, and the overall portability and deadweight management of the lifting module 1. In particular, it is necessary to consider the impact of the lifting process on the measuring instruments, such as avoiding any obstruction of the beam of the spatial reflective level meter and the measurement beam of length standards such as laser interferometers, and eliminating clutter interference that may be introduced by the device structure itself, so as to ensure the authenticity of the measurement results of the spatial reflective level meter.

[0058] However, the existing single-arm vertical lifting, scissor-type, screw-type lifting modules on the market are mostly used in outdoor operations or vertical transportation of goods. They are heavy and have large loads, making them inconvenient to carry. They also have defects such as beam blocking and clutter interference. Moreover, most of them do not have horizontal posture control capabilities and cannot meet the requirements of on-site in-situ calibration of spatial reflective level meters.

[0059] The lifting module 1 provided in the present application is easy to carry, can achieve smooth lifting and lowering, ensures precise control of its horizontal posture, avoids any obstruction of the beam of the spatial reflective level meter and the measurement beam of length standards such as laser interferometers, and eliminates clutter interference that may be introduced by the structure itself, thereby ensuring the authenticity of the measurement results of the spatial reflective level meter.

[0060] Figure 2 1 shows a schematic structural diagram of the lifting module 1 provided in an embodiment of the present application. Figure 2 As shown, the lifting module 1 provided in the present application includes a frame 11 and a lifting mechanism 12. The frame 11 includes a base 111, a column 112, and a crossbeam 113. The column 112 is vertically fixed to the base 111. The crossbeam 113 is fixed to the upper end of the column 112. The crossbeam 113 has a beam hole 1131. The lifting mechanism 12 includes a lifting platform 121 that can be raised and lowered relative to the column 112. The reflector leveling module 2 is installed on the lifting platform 121. The reflector 3 is installed on the reflector leveling module 2. The reflector leveling module 2 and the reflector 3 are driven to rise and fall to the desired height by the lifting platform 121. It is understandable that the column 112 can adopt an integrated structure or a multi-section structure, wherein the multiple sections are detachably fixed by bolts.

[0061] The lifting mechanism 12 also includes a lifting drive assembly 122, which is used to drive the lifting platform 121 up and down. The lifting drive assembly 122 includes a lifting drive 1221, a guide wheel 1222, and a wire rope 1223. The lifting drive 1221 is fixed to the base 111, and the guide wheel 1222 is fixed to the crossbeam 113. The wire rope 1223 passes around the guide wheel 1222. One end of the wire rope 1223 is connected to the lifting drive 1221, and the other end is connected to the lifting platform 121. In use, the lifting drive 1221 can drive the wire rope 1223 to wind, thereby achieving the lifting operation of the lifting platform 121.

[0062] In this embodiment, there are two guide wheels 1222, which are arranged at intervals and are both used to guide the wire rope 1223. One of the guide wheels 1222 is located at the edge of the beam 113, and is used to ensure that the wire rope 1223 is smoothly wound around the wheel surface of the guide wheel 1222 in the vertical direction. The other guide wheel 1222 is located in the middle position of the beam 113, and is used to ensure that the wire rope 1223 extends in the vertical direction and is smoothly wound around the wheel surface of the guide wheel 1222. The two guide wheels 1222 can ensure the stability of the overall movement of the wire rope 1223.

[0063] The lifting drive 1221 can use a servo motor. The lifting drive assembly 122 also includes a reducer and a wire rope winding disk. The servo motor is connected to the wire rope winding disk through the reducer, and the wire rope winding disk is driven to wind the wire rope 1223 to realize the wire rope 1223 driving the lifting platform 121 to rise and fall.

[0064] In addition, the lifting drive assembly 122 also includes a limiting ring 1224 and a limiting member 1225. The limiting ring 1224 is installed on the wire rope 1223, and the limiting member 1225 is installed on the column 112. The limiting member 1225 has a through hole, the diameter of which is larger than the diameter of the wire rope 1223 and smaller than the diameter of the limiting ring 1224. The limiting ring 1224 and the limiting member 1225 are abutted against each other to limit the lowest position of the lifting platform 121.

[0065] Figure 3 FIG. 1 shows a schematic structural diagram of the lifting platform 121 provided in an embodiment of the present application. Figure 3 As shown, the lifting mechanism 12 also includes lifting rings 123, at least three of which are evenly spaced and fixed to the lifting platform 121. The wire rope 1223 has multiple sub-cables 12231, and each sub-cable 12231 is connected to each lifting ring 123 in a one-to-one correspondence. For example, the three lifting rings 123 are arranged in an equilateral triangle on the lifting platform 121. The wire rope 1223 has three sub-cables 12231, and each sub-cable 12231 is fixedly connected to each lifting ring 123. The confluence of the three sub-cables 12231 and the center of the lifting platform 121 are located on the same vertical line. This ensures that the lifting rings 123 are subjected to equal force, thereby ensuring balanced force on the entire lifting platform 121 and thus ensuring the stability of the lifting platform 121 during the lifting process.

[0066] In this embodiment, the lifting platform 121 is square in shape, which not only facilitates the processing and manufacturing of the lifting platform 121, but also facilitates the calibration of the center and center of gravity of the lifting platform 121, thereby facilitating the positioning and installation of the lifting ring 123.

[0067] Figure 4 1 shows a schematic structural diagram of the base 111 provided in an embodiment of the present application. Figure 4As shown, the base 111 includes a bottom frame 1111 and a column fixing member 1112. The column fixing member 1112 is U-shaped, with two arms fixed to the bottom frame 1111. The column 112 and the lifting actuator 1221 are both mounted on the column fixing member 1112. This arrangement can improve the installation strength of the column 112, while providing a mounting position for the lifting actuator 1221 and ensuring the stability of the lifting actuator 1221.

[0068] The lift drive assembly 122 further includes a bracket 1226, which is fixed to the column fixture 1112 and has a mounting slot for accommodating the lift drive 1221. For example, the bracket 1226 can be formed by combining metal plates to ensure both the load-bearing capacity and the structural strength of the bracket 1226.

[0069] Figure 5 Shown Figure 4 A schematic diagram of the partial structure of the middle base 111. Figure 5 As shown, the lifting module 1 also includes a frame leveling assembly 13, which is used to adjust the horizontal posture of the base 111 to ensure the overall stability of the lifting module 1 and ensure that the horizontal state of the lifting module 1 meets calibration requirements. It should be noted that the frame leveling assembly 13 can achieve rough leveling of the entire field level simulation device by adjusting the horizontal posture of the base 111.

[0070] The rack leveling assembly 13 includes a fixing member 131 and a lifting support member 132. The fixing member 131 is fixed to the bottom frame 1111 of the base 111. The lifting support member 132 is threadedly connected to the fixing member 131 and extends vertically. The bottom of the lifting support member 132 can abut the placement surface of the base 111. Four rack leveling assemblies 13 are evenly spaced and used to adjust the horizontal posture of the base 111. Specifically, the bottom frame 1111 is quadrilateral in shape, and the four rack leveling assemblies 13 are arranged at the four corners of the bottom frame 1111. In other embodiments, the number of rack leveling assemblies 13 is at least three, and these examples are not further illustrated here.

[0071] The frame leveling assembly 13 also includes a handwheel 133, which is fixed to the top of the lifting support 132. Rotating the handwheel 133 raises or lowers the lifting support 132 relative to the fixed member 131, facilitating operation. Furthermore, the handwheel 133 includes a wheel disc 1331 and a lever 1332. The wheel disc 1331 is fixed to the top of the lifting support 132, and the lever 1332 is fixed to the wheel disc 1331 and extends vertically. During operation, the operator rotates the handwheel 133 by holding the lever 1332, thereby raising or lowering the lifting support 132, thereby adjusting the horizontal position of the base 111.

[0072] Figure 6 FIG. 1 shows a partial structural diagram of the lifting platform 121 and the column 112 provided in the embodiment of the present application. Figure 6 Combine Figure 2 As shown, the lifting module 1 also includes an anti-sway mechanism 14, which is used to ensure stable lifting of the lifting platform 121 relative to the columns 112 and prevent the lifting platform 121 from shaking significantly. In this embodiment, the two columns 112 are symmetrically fixed to the base 111. The anti-sway mechanism 14 is provided on the side of the lifting platform 121 opposite the columns 112. Each anti-sway mechanism 14 slides and rolls with its corresponding column 112. In other embodiments, the number of columns 112 can be three, four, five, or any other number, and will not be further illustrated here.

[0073] Figure 7 Shown Figure 6 Schematic diagram of the structure of the anti-sway mechanism 14. Figure 8 Shown Figure 6 A schematic cross-sectional view of the middle anti-sway mechanism 14 in one direction. Figure 9 Shown Figure 6 A schematic cross-sectional view of the anti-sway mechanism 14 in another direction. Figures 7 to 9 As shown, the anti-sway mechanism 14 includes a bracket 141 and a sliding member 142. The bracket 141 is fixed to the lifting platform 121, and the sliding member 142 is fixed to the bracket 141. The column 112 has a sliding groove 1121 that slides with the sliding member 142 and extends in the vertical direction. The sliding member 142 cooperates with the sliding groove 1121 on the column 112 to guide the lifting of the lifting platform 121, ensuring that the lifting platform 121 can be lifted and lowered stably in the vertical direction and preventing the lifting platform 121 from tilting forward and backward at a large angle during the lifting process.

[0074] The anti-sway mechanism 14 also includes a rolling assembly 143, which includes a fixed disk 1431 and a ball 1432. The fixed disk 1431 is fixed to the bracket 141 and has a spherical annular groove for accommodating the ball 1432. The spherical surface of the ball 1432 abuts against the column 112. When the lifting platform 121 is raised or lowered, the friction between the ball 1432 and the column 112 is rolling friction, which not only reduces the friction during the lifting process of the lifting platform 121, but also ensures the stable lifting of the lifting platform 121.

[0075] In this embodiment, the rolling assembly 143 includes two sets of ball assemblies, each of which includes at least two balls 1432. The two sets of ball assemblies are located on either side of the slide groove 1121. In other words, the spherical surface of the ball 1432 abuts against the surface of the column 112, and the sliding member 142 extends into the slide groove 1121 of the column 112.

[0076] Sliders 142 are provided above and below the rolling assembly 143. That is, there are two sliders 142, which are respectively located above and below the rolling assembly 143. The provision of the two sliders 142 can further ensure that the lifting platform 121 can be stably lifted and lowered along the chute 1121.

[0077] Bracket 141 includes a connecting member 1411, a mounting member 1412, and an elastic member 1413. Connecting member 1411 is fixed to lifting platform 121. Mounting member 1412 is arranged parallel to connecting member 1411 and spaced apart from connecting member 1411, and is used to fix sliding member 142 and rolling assembly 143. Elastic member 1413 is located between mounting member 1412 and connecting member 1411, and the elastic deformation direction of elastic member 1413 is the same as the arrangement direction of mounting member 1412 and connecting member 1411. This arrangement allows elastic member 1413 to allow mounting member 1412 to elastically move relative to connecting member 1411, which not only absorbs and reduces vibration generated by lifting platform 121 during lifting and lowering, allowing lifting platform 121 to quickly and stably stop, but also prevents sliding member 142 from contacting the bottom surface of chute 1121 and becoming stuck in chute 1121.

[0078] Bracket 141 further includes a guide member 1414, one end of which is fixed to mounting member 1412 and the other end of which is slidably engaged with connecting member 1411. Elastic member 1413 is sleeved on the outside of guide member 1414, and guide member 1414 is used to limit and guide elastic member 1413. For example, elastic member 1413 can be a spring, and guide member 1414 can be a guide rod.

[0079] Furthermore, the bracket 141 also includes a damping bearing 1415, which is fixed to the connecting member 1411 and slidably engages with the guide member 1414. The damping bearing 1415 provides a certain degree of damping when the guide member 1414 slides relative to the connecting member 1411, thereby reducing the movement of the guide member 1414 and improving the overall stability of the anti-sway mechanism 14.

[0080] In this embodiment, the elastic member 1413, the guide member 1414, and the damping bearing 1415 are arranged in groups. Bracket 141 includes two groups, one on each side of rolling assembly 143. This ensures a stable connection between mounting member 1412 and connecting member 1411 and balances the force applied to mounting member 1412. In other embodiments, the number of groups of elastic member 1413, guide member 1414, and damping bearing 1415 can be three, four, or five, etc., and these examples are not further detailed here.

[0081] Figure 10 Schematic diagram of the structure of the reflector leveling module 2 provided in this application is shown. Figure 10 Combine Figure 1 As shown, the reflector leveling module 2 includes a leveling platform 21 and a leveling mechanism 22. Three leveling mechanisms 22 are installed on the lifting platform 121 and arranged in an equilateral triangle. The output end of each leveling mechanism 22 is connected to the leveling platform 21 and is used to adjust the horizontal posture of the leveling platform 21.

[0082] The leveling platform 21 includes a frame 211 and mounting blocks 212. Three mounting blocks 212 are fixed to the frame 211 at intervals. The three mounting blocks 212 are connected to the output terminals of the three leveling mechanisms 22 in a one-to-one correspondence. In this embodiment, the frame 211 is square in shape. The leveling platform 211 also includes fixed arms 215. The three fixed arms 215 are fixed to three adjacent sides of the frame 211. The extension lines of two fixed arms 215 overlap, and the extension line of the third fixed arm 215 is perpendicular to the extension lines of the first two fixed arms 215, thereby achieving three-point constraint positioning of the reflector 3. Of course, in other embodiments, the number of fixed arms 215 can also be four, so as to achieve four-point constraint positioning of the reflector 3.

[0083] Furthermore, the reflector 3 is circular in shape, and a beam hole 1131 is provided on the beam 113 . The center of the beam hole 1131 and the center of the reflector 3 are located on the same vertical line.

[0084] Figure 11 Shown Figure 10 Schematic diagram of the structure of the middle leveling mechanism 22. Figure 12 Shown Figure 11 A partial cross-sectional view of the leveling mechanism 22. Figures 11 to 12 As shown, the leveling mechanism 22 includes a ball joint assembly 221 and a leveling drive assembly 222. The leveling drive assembly 222 is fixedly connected to the lifting platform 121 of the lifting module 1 through the ball joint assembly 221, and the output end of the leveling drive assembly 222 is connected to the leveling platform 21 and can be lifted and lowered relative to the lifting platform 121.

[0085] The ball joint assembly 221 includes a ball joint seat 2211 and a ball head 2212. The ball joint seat 2211 is fixed to the lifting platform 121 and has a spherical groove and an opening connected to the spherical groove. The ball head 2212 includes a connecting portion 22121 and a spherical portion 22122. The spherical portion 22122 engages with the spherical groove, and the connecting portion 22121 extends out of the ball joint seat 2211 through the opening. This arrangement prevents the three leveling mechanisms 22 from deforming the leveling platform 21 and the reflector 3 due to the telescopic action of the output end of the leveling drive assembly 222 during the process of adjusting the horizontal posture of the leveling platform 21.

[0086] The ball joint seat 2211 includes a fixed seat 22111, a first cover plate 22112 and a second cover plate 22113. The fixed seat 22111 is fixed to the lifting platform 121. The first cover plate 22112 and the second cover plate 22113 are symmetrically arranged and are both detachably connected to the fixed seat 22111. The first cover plate 22112, the second cover plate 22113 and the fixed seat 22111 cooperate to form a spherical groove. The first cover plate 22112 and the second cover plate 22113 cooperate to form an opening. Such an arrangement can facilitate the assembly of the ball joint seat 2211 and the ball head member 2212, thereby improving assembly efficiency. Furthermore, the fixed seat 22111 can be detachably fixed to the lifting platform 121, which can facilitate the disassembly and assembly of the reflector leveling module 2 and the lifting platform 121, thereby improving the disassembly and assembly efficiency of the equipment.

[0087] The ball joint assembly 221 further includes a sleeve 2213 . The connecting portion 22121 is detachably fixedly connected to the sleeve 2213 . The sleeve 2213 extends in a vertical direction. The output end of the leveling drive assembly 222 can be raised and lowered relative to the sleeve 2213 .

[0088] The leveling drive assembly 222 includes a leveling driver 2221 and a lifting member 2222. The lifting member 2222 is sleeved outside the sleeve 2213 and fixedly connected to the leveling platform 21. The leveling driver 2221 is mounted on the sleeve 2213 and is used to drive the lifting member 2222 to move upward and downward relative to the sleeve 2213. The leveling driver 2221 is a servo motor. In this embodiment, the leveling drive assembly 222 also includes a screw-nut transmission assembly, through which the leveling driver 2221 drives the lifting member 2222 relative to the sleeve 2213. In other embodiments, the leveling drive assembly 222 also includes a worm gear transmission assembly, through which the leveling driver 2221 drives the lifting member 2222 relative to the sleeve 2213. It is understood that any transmission assembly capable of converting the rotational motion of the leveling driver 2221 into the linear lifting motion of the lifting member 2222 can be used, and no specific examples are provided here.

[0089] In order to realize the connection between the leveling platform 21 and the lifting member 2222, the leveling platform 21 also includes a connecting assembly, which includes a first connecting member 213 and a second connecting member 214. The first connecting member 213 is fixed on the mounting seat 212. The first connecting member 213 and the second connecting member 214 cooperate to form a accommodating cavity for accommodating the lifting member 2222, and then the second connecting member 214 is detachably fixedly connected to the first connecting member 213 through a screw nut.

[0090] Furthermore, the lifting member 2222 has an anti-rotation protrusion 22221 extending in the vertical direction, and the accommodating cavity has an anti-rotation recess that cooperates with the anti-rotation protrusion 22221 to prevent the mounting seat 212 from rotating relative to the lifting member 2222, ensuring that the mounting seat 212 and the lifting member 2222 are lifted and lowered synchronously.

[0091] In this embodiment, the leveling mechanism 22 and the dual-axis tilt sensor 41 utilize a minimalist design using discrete components, enabling the total weight of the reflector leveling module 2 to be 8 kg or less. Due to the overall light weight of the reflector leveling module 2, the horizontal force generated by gravity on the reflector leveling module 2 is minimal during the process of the elevating module 1 driving the reflector leveling module 2 and the reflector 3 to rise and fall. Therefore, the columns 112 are essentially unaffected by horizontal forces. This eliminates the need for steel structures for the columns 112, which can be constructed from lightweight aluminum or even lighter carbon fiber. Furthermore, maintaining the number of columns 112 at two satisfies the requirement, significantly reducing the overall weight of the elevating module 1. In addition, after the rack leveling assembly 13 roughly levels the base 111, since the pulling force of the wire rope 1223 on the lifting platform 121 is the internal force of the system, the center of gravity position of the entire on-site level simulation device basically does not change, and there is no risk of overturning. Therefore, there is no need to add counterweights to move the center of gravity downward, which further reduces the weight of the lifting module 1. The weight of the lifting module 1 can reach 25 kg.

[0092] This application also provides an on-site, in-situ calibration method for a level meter. This method, based on the aforementioned on-site level simulation device, specifically a spatial reflective level meter, includes an apparatus assembly step and an in-situ calibration step. In short, during application, the on-site level simulation device is brought to the site to be measured, then assembled, and the corresponding spatial reflective level meter and length standards, such as a laser interferometer, are installed. Finally, the in-situ calibration of the spatial reflective level meter is performed.

[0093] Figure 13 The figure shows the installation position diagram of the spatial reflective level meter and the on-site level simulation device provided in the embodiment of the present application. Figure 13 As shown, the equipment assembly steps include: assembling the on-site level simulation device; installing a spatial reflective level meter at position H1 above the beam 113, with the center of the antenna aperture of the spatial reflective level meter and the center of the beam hole 1131 on the same vertical line; and installing a laser interferometer at the center of the bottom of the reflector 3. Because there is no obstruction between the lower surface of the reflector 3 and the control module 42, installing a length standard such as the laser interferometer at the bottom of the reflector 3 can eliminate beam obstruction and clutter interference.

[0094] In this embodiment, Diameter of reflector 3 Wherein, D1 is the diameter of the beam hole 1131; θ is the beam angle of the spatial reflective level meter 100; H max is the distance between the reflecting plate 3 and the spatial reflective level meter 100 when the spatial reflective level meter 100 is at the maximum calibration height.

[0095] The in-situ calibration step includes: raising and lowering the lifting platform 121 to the required height, then adjusting the horizontal posture of the reflector 3, and making the center of the reflector 3, the center of the beam hole 1131, and the center of the antenna aperture surface of the spatial reflective level meter collinear, thereby constructing a standard one-dimensional ranging environment on site and improving the accuracy of the on-site in-situ calibration results.

[0096] Figure 14 FIG. 2 shows a schematic diagram of the reflector leveling module 2 provided in an embodiment of the present application. Figure 14 As shown, adjusting the horizontal posture of the reflector 3 includes the following steps:

[0097] The intersections of the three leveling mechanisms 22 and the leveling platform 21 are marked as points A, B, and C, respectively. The line between point A and point B is marked as the first axis, the line between point A and point C is marked as the second axis, the angle between the first axis and the horizontal plane is α, and the angle between the second axis and the horizontal plane is β.

[0098] The dual-axis tilt sensor 41 detects the values ​​of α and β;

[0099] Determine the highest point among points A, B, and C based on α and β;

[0100] If point A is the highest, first make the leveling mechanism 22 corresponding to point B drive the leveling platform 21 to rise until α is less than 0.01°, then make the leveling mechanism 22 corresponding to point C drive the leveling platform 21 to rise until β is less than 0.01°, and finally lock all the leveling mechanisms 22;

[0101] If point B is the highest, first make the leveling mechanism 22 corresponding to point A drive the leveling platform 21 to rise until α is less than 0.01°, then make the leveling mechanism 22 corresponding to point C drive the leveling platform 21 to rise until β is less than 0.01°, and finally lock all the leveling mechanisms 22;

[0102] If point C is the highest, first make the leveling mechanism 22 corresponding to point A drive the leveling platform 21 to rise until β is less than 0.01°, then make the leveling mechanism 22 corresponding to point B drive the leveling platform 21 to rise until α is less than 0.01°, and finally lock all the leveling mechanisms 22.

[0103] In order to conveniently explain the adjustment steps for adjusting the horizontal posture of the reflector 3, the adjustment mechanism corresponding to point A is recorded as the first adjustment mechanism, the adjustment mechanism corresponding to point B is recorded as the second adjustment mechanism, and the adjustment mechanism corresponding to point C is recorded as the third adjustment mechanism.

[0104] Figure 15 FIG. 1 shows a flow chart of adjusting the horizontal posture of the reflector 3 provided in an embodiment of the present application. Figure 15 Combine Figure 14 As shown, when α<0 and β<0, point A is the highest. The control module 42 outputs a drive signal to the first leveling mechanism 22a, the second leveling mechanism 22b, and the third leveling mechanism 22c, keeping the first leveling mechanism 22a and the third leveling mechanism 22c stationary. The lifting member 2222 of the second leveling mechanism 22b is raised by a certain displacement, i.e., the reflector 3 rotates about the second axis. The amount of the raised displacement is determined by the measured value of α until α is less than 0.01°, at which point the first axis is horizontal. After the first axis is horizontal, the control module 42 outputs a drive signal to the first leveling mechanism 22a, the second leveling mechanism 22b, and the third leveling mechanism 22c, keeping the first leveling mechanism 22a and the second leveling mechanism 22b stationary. The lifting member 2222 of the third leveling mechanism 22c is raised by a certain displacement, i.e., the reflector 3 rotates about the first axis. The amount of the raised displacement is determined by the measured value of β until β is less than 0.01°, at which point the second axis is horizontal. When the first axis and the second axis are both in a horizontal state, the three leveling mechanisms 22 are locked. Similarly, when point B or point C is the highest, the above control method can be referred to and will not be repeated here.

[0105] It should be noted that after the control module 42 collects the detection results of the dual-axis inclination sensor 41, it uses a closed-loop control algorithm that aligns with the highest point. By calculating the highest point position, it outputs a drive signal to control the corresponding leveling mechanism 22 to drive the leveling platform 21 up and down until the leveling platform 21 is horizontal, and then locks the leveling mechanism 22. The closed-loop control algorithm that aligns with the highest point has simple control logic and strong robustness. Moreover, because the lifting platform 121 is very stable during the lifting movement, large-angle leveling is not required, and the leveling time is short, only a dozen seconds to complete. Given the same number of calibration points, this can significantly shorten the in-situ calibration time of spatial reflective level meters.

[0106] The above shows and describes the basic principles, main features and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of protection of this application.

Claims

1. A lifting module, characterized in that: include: A frame (11) comprises a base (111), columns (112) and a crossbeam (113), wherein at least two of the columns (112) are fixed to the base (111) and extend in a vertical direction, and the crossbeam (113) is fixed to the columns (112); A lifting mechanism (12) comprises a lifting driver (1221), a guide wheel (1222), a steel wire rope (1223) and a lifting platform (121), wherein the lifting driver (1221) is fixed to the base (111), the guide wheel (1222) is fixed to the crossbeam (113), the steel wire rope (1223) passes around the guide wheel (1222), and one end of the steel wire rope (1223) is connected to the lifting driver (1221), and the other end thereof is connected to the lifting platform (121); An anti-sway mechanism (14) is provided on the side of the lifting platform (121) opposite to the column (112), and each anti-sway mechanism (14) is slidably and rollingly matched with the corresponding column (112).

2. The lifting module according to claim 1, characterized in that: The anti-sway mechanism (14) comprises a bracket (141) and a sliding member (142); the bracket (141) is fixed to the lifting platform (121); the sliding member (142) is fixed to the bracket (141); and the column (112) has a sliding groove (1121) that is slidably matched with the sliding member (142) and extends in a vertical direction.

3. The lifting module according to claim 2, characterized in that: The anti-sway mechanism (14) further includes a rolling assembly (143), the rolling assembly (143) including a fixed disk (1431) and a sphere (1432), the fixed disk (1431) being fixed to the bracket (141), and the fixed disk (1431) having a spherical annular groove for accommodating the sphere (1432), and the spherical surface of the sphere (1432) abutting against the column (112).

4. The lifting module according to claim 3, characterized in that: The rolling assembly (143) has two groups of ball groups, each of the ball groups has at least two balls (1432), and the two groups of ball groups are respectively located on both sides of the sliding groove (1121).

5. The lifting module according to claim 3, characterized in that: The sliding member (142) is provided above and below the rolling assembly (143).

6. The lifting module according to claim 3, characterized in that: The bracket (141) includes a connecting member (1411), a mounting member (1412) and an elastic member (1413); the connecting member (1411) is fixed to the lifting platform (121); the mounting member (1412) is arranged parallel to and spaced apart from the connecting member (1411) and is used to fix the sliding member (142) and the rolling assembly (143); the elastic member (1413) is located between the mounting member (1412) and the connecting member (1411); and the elastic deformation direction of the elastic member (1413) is the same as the arrangement direction of the mounting member (1412) and the connecting member (1411).

7. The lifting module according to claim 6, characterized in that: The bracket (141) further includes a guide member (1414), one end of which is fixed to the mounting member (1412), and the other end of which is slidably engaged with the connecting member (1411), and the elastic member (1413) is sleeved outside the guide member (1414).

8. The lifting module according to claim 7, characterized in that: The bracket (141) further includes a damping bearing (1415), which is fixed to the connecting member (1411) and slidingly engaged with the guide member (1414).

9. The lifting module according to any one of claims 1 to 8, characterized in that: The lifting mechanism (12) further comprises a lifting ring (123), at least three of the lifting rings (123) are evenly spaced and fixed on the lifting platform (121), the steel wire rope (1223) comprises a plurality of sub-ropes (12231), and each sub-ropes (12231) is connected to each of the lifting rings (123) in a one-to-one correspondence.

10. An on-site level simulation device, characterized in that: The invention comprises a reflective plate (3), a reflective plate leveling module (2), and a lifting module according to any one of claims 1 to 9, wherein the reflective plate (3) is mounted on a leveling platform (21) of the reflective plate leveling module (2), and the reflective plate leveling module (2) is mounted on the lifting platform (121) and is used to adjust the horizontal posture of the reflective plate (3).

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