A high-precision fluid quantitative metering device and a fluid quantitative metering method

Abstract

The present invention provides a high-precision fluid quantitative metering device and a fluid quantitative metering method. The high-precision fluid quantitative metering device includes a structural frame, an electronic weighing instrument, a fluid collecting device, a weight rack and a weight, and the accuracy value of the weight is a known value. When in use, first determine the theoretical flow rate and calculate the corresponding mass value M, then load the weight of the mass value M on the weight rack and record the indication K of the electronic weighing instrument, after unloading the weight, put the fluid flowing out of the flow meter into the fluid collecting device, when the indication of the electronic weighing instrument becomes K, the actual flow flowing out of the flow meter is equivalent to the theoretical flow rate, compare the theoretical fluid volume with the indication of the flow meter to be calibrated, and then determine whether its accuracy meets the standard. The present invention utilizes the characteristics of high precision and good long-term stability of the weight, and at the same time, with the help of the characteristics of good short-term repeatability of the indication of the electronic weighing instrument, to achieve high-precision quantitative measurement of the flow of the flow meter, and improve the accuracy of the calibration or verification results of the flow meter.

Description

Technical Field

[0001] The invention relates to the technical field of flow rate verification, in particular to a high-precision fluid quantitative metering device and a fluid quantitative metering method. Background Art

[0002] At present, the calibration or verification method of flowmeter is usually to use electronic weighing instrument to weigh the mass of the outflowing fluid, and then convert it into volume and compare it with the flowmeter indication. However, since the electronic weighing instrument as a standard is easily disturbed by external electromagnetic fields and other environmental factors, the long-term stability of accuracy is poor. Generally, it needs to be re-calibrated every six months or at most once a year, resulting in high equipment maintenance costs, and also directly leading to a decrease in the accuracy of the flowmeter calibration or verification results. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a high-precision fluid quantitative metering device and a fluid quantitative metering method.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve the technical problem is: a high-precision fluid quantitative metering device, comprising:

[0005] Structural frame;

[0006] An electronic weighing instrument, which is installed on the structural frame;

[0007] A fluid collecting device, which is used to collect the fluid to be measured and is placed on the electronic weighing instrument;

[0008] A weight hanger, which is used to hang the loaded weight, and the upper part of the weight hanger is connected to the fluid collection device or the electronic weighing instrument;

[0009] A weight is hung below the weight hanger, the mass of the weight is transferred to the electronic weighing instrument via the weight hanger, and the accuracy of the weight mass is a known value.

[0010] The weight is the most commonly used physical reference in the world at present. As a carrier of the mass value, the accuracy of the weight can reach one hundred thousandth or even higher according to the need. The accuracy value of the weight can remain stable for a long time and can generally be calibrated once every two years. When the high-precision fluid quantitative metering device of the present invention is used, first according to the calibration requirements of the flow meter to be calibrated, determine the theoretical amount of fluid that needs to be flowed out and calculated the corresponding mass value M, then load the weight with the mass value M on the weight rack and record the indication K of the electronic weighing instrument, unload the weight, start the calibration of the flow meter to be calibrated, put the fluid flowing out of the flow meter into the fluid collection device, and pay attention to the electronic weighing instrument until its indication becomes K. At this time, the actual mass value of the fluid flowing out of the flow meter is M, and the flow meter to be calibrated is calibrated or its accuracy is determined by conversion. The present invention utilizes the characteristics of high precision and good long-term stability of the weight, and at the same time, with the help of the characteristics of good short-term repeatability of the indication of the electronic weighing instrument, to achieve high-precision quantitative measurement of the flow of the flow meter, and improve the accuracy of the calibration or calibration results of the flow meter. At the same time, it also reduces the frequency of maintenance and calibration, and reduces user costs.

[0011] Furthermore, it also includes a weight loading mechanism, which includes a base, a top plate, a column, a weight tray and a first lifting drive mechanism, the top end of the column is fixedly connected to the top plate, the bottom end of the column is fixedly connected to the base, the weight tray is liftably installed on the column via a guide sleeve, and the first lifting drive mechanism drives the weight tray to move up and down along the column.

[0012] Furthermore, the first lifting drive mechanism includes a reduction motor and a screw mechanism, the reduction motor is fixedly mounted on the base, the screw of the screw mechanism is vertically mounted, the bottom end of the screw is connected to the output shaft of the reduction motor, the top end of the screw is mounted on the top plate via a bearing, the nut of the screw mechanism is fixedly mounted on the weight tray, the reduction motor drives the screw to rotate, and thereby drives the weight tray to move up and down along the column.

[0013] By adopting the above preferred solution, the smooth loading and unloading of the weights can be automatically achieved.

[0014] Furthermore, the weight comprises a plurality of stacked weight units, and adjacent weight units are connected in series via weight hanging nails.

[0015] By adopting the above-mentioned preferred scheme, when the lower weight unit is lifted up, the weight hanging nails are disengaged from the hanging nail holes of the upper weight unit and no longer in contact with each other, thereby realizing the unloading of the lower weight unit; when the lower weight unit is suspended by its own weight, the weight hanging nails are hung with the hanging nail holes of the upper weight unit, and the dead weight is loaded onto the electronic weighing instrument through the weight hanger; through the combination of weight units, the weight of a single weight unit is reduced, which facilitates the transfer of weights and is also convenient for setting multiple quantitative specifications according to flow calibration requirements.

[0016] Furthermore, a dustproof box is provided on the periphery of the weight.

[0017] The above preferred solution is adopted to prevent dust from adhering to or corroding the weights, ensuring that the weights maintain high precision for a long time.

[0018] Furthermore, it also includes a controller, a first reader and a second reader. The weight loading mechanism, the electronic weighing instrument, the flow meter to be detected, the first reader and the second reader are all connected to the controller signal. After the controller receives the action signal of the weight loading mechanism, it processes and sends out a command signal to control the first reader to read the weighing data of the electronic weighing instrument; after the controller receives the weighing data signal of the electronic weighing instrument, it processes and sends out a command signal to control the second reader to read the flow data of the flow meter to be detected.

[0019] By adopting the above preferred solution, data can be collected automatically and accurately in real time, thereby achieving high-precision verification or calibration of the flow meter.

[0020] Furthermore, the weight hanger includes a first hanger rod, a hanging plate and a second hanger rod, the number of the first hanger rods is at least 2, the top end of the first hanger rod is installed on the hanging ear of the outer wall of the fluid collection device via a spherical joint bearing, the lower end of the first hanger rod is installed on the support arm of the hanging plate via a spherical joint bearing, the top end of the second hanger rod is installed in the center hole of the hanging plate via a spherical joint bearing, and the lower end of the second hanger rod is connected to the top surface center of the weight via a universal joint.

[0021] The above preferred solution is adopted to ensure that the weight mass can be accurately loaded onto the electronic weighing instrument.

[0022] Furthermore, the hanging platform includes a central column and a plurality of arms extending outward from the central column, a horizontal connecting arm is connected between adjacent arms, an oblique support arm is provided on the bottom surface of each arm, both ends of the oblique support arm are respectively connected between the arm and the central column, and a reinforcing support column is provided between each arm and the oblique support arm below it.

[0023] The above preferred solution is adopted to ensure the structural strength and force transmission stability of the hanging plate.

[0024] A method for quantitatively measuring a fluid comprises the following steps:

[0025] Step 1, before the fluid to be measured is added to the fluid collection device, the corresponding mass value M is calculated according to the target flow value V of the fluid to be measured, and a weight with a mass value of M and a known precision value is loaded on the weight rack, and after the weight is loaded, the reading K of the electronic weighing instrument is read;

[0026] Step 2, unloading the loaded weight with mass value M from the weight rack;

[0027] Step 3, put a certain amount of fluid into the fluid collection device until the reading of the electronic weighing instrument becomes K, and the flow value flowing into the fluid collection device at this time is the target flow value V;

[0028] Step 4. Select weights of corresponding mass as needed and repeat steps 1 to 3.

[0029] By adopting the above technical solution, the high precision and good long-term stability of the weights are utilized, and the good short-term repeatability of the electronic weighing instrument's indication is utilized to achieve high-precision quantification of the flow meter flow rate and improve the accuracy of the flow meter calibration or verification results. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a structural schematic diagram of an implementation mode of a high-precision fluid quantitative metering device of the present invention;

[0032] Figure 2 It is a schematic structural diagram of a hidden structural frame of a high-precision fluid quantitative metering device of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the weight;

[0034] Figure 4 It is a structural diagram of the hanging plate;

[0035] Figure 5 It is a structural schematic diagram of another embodiment of a high-precision fluid quantitative metering device;

[0036] Figure 6 It is a front view of another embodiment of the high-precision fluid quantitative metering device;

[0037] Figure 7It is a structural diagram of the weight removal mechanism.

[0038] The numbers and letters in the figure represent the names of the corresponding parts:

[0039] 10-structure frame; 20-electronic weighing instrument; 30-fluid collecting device; 40-weight rack; 401-first suspension rod; 402-suspension plate; 4021-central column; 4022-support arm; 4023-horizontal connecting arm; 4024-oblique support arm; 4025-reinforcement support column; 403-second suspension rod; 50-weight; 501-weight unit; 502-weight hanging nail; 503-hanging nail hole; 60-weight loading mechanism; 601-base; 602-top plate; 60 3-column; 604-weight tray; 605-first lifting drive mechanism; 70-weight lifting mechanism; 701-lifting column; 80-weight removal mechanism; 801-base; 802-first guide rail; 803-moving frame; 8031-lower shelf layer; 8032-vertical support column; 8033-upper shelf layer; 8034-cantilever; 804-first translation drive mechanism; 805-second guide rail; 806-translation tray; 807-second translation drive mechanism; 90-hoisting mechanism. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1 , 2 As shown, one embodiment of the present invention is: a high-precision fluid quantitative metering device, comprising:

[0042] Structural frame 10;

[0043] An electronic weighing instrument 20, which is mounted on the structural frame 10;

[0044] A fluid collecting device 30, which is used to collect the fluid to be measured and is placed on the electronic weighing instrument 20;

[0045] A weight rack 40, which is used to hang the loaded weight 50, and the upper part of the weight rack 40 is connected to the fluid collection device 30;

[0046] The weight 50 is hung below the weight hanger 40 . The mass of the weight 50 is transferred to the electronic weighing instrument 20 via the weight hanger 40 . The accuracy of the weight 50 is a known value.

[0047] The beneficial effect of adopting the above technical solution is: when in use, first determine the theoretical fluid volume V that needs to flow out and measure in a single time according to the calibration requirements of the flow meter to be calibrated, and calculate the corresponding mass value M according to M=ρV, where ρ is the density of the fluid, then load the weight 50 with a mass value of M on the weight hanger 40 and record the indication K of the electronic weighing instrument 20, after unloading the weight, start the calibration of the flow meter to be calibrated, put the fluid flowing out of the flow meter into the fluid collection device 30, and pay attention to the electronic weighing instrument 20 until its indication becomes K, at this time, the actual mass value of the fluid flowing out of the flow meter is M, and the flow meter to be calibrated is calibrated or its accuracy is determined by conversion. The present invention utilizes the characteristics of high precision and good long-term stability of the weight, and at the same time, with the help of the characteristics of good short-term repeatability of the indication of the electronic weighing instrument, to achieve high-precision quantitative measurement of the flow of the flow meter, and improve the accuracy of the calibration or calibration results of the flow meter. At the same time, it also reduces the frequency of maintenance and calibration, and reduces the user's use cost.

[0048] like Figure 2 As shown, in some other embodiments of the present invention, a weight loading mechanism 60 is further included, and the weight loading mechanism 60 includes a base 601, a top plate 602, a column 603, a weight tray 604 and a first lifting drive mechanism 605. The top of the column 603 is fixedly connected to the top plate 602, the bottom of the column 603 is fixedly connected to the base 601, and the weight tray 604 is installed on the column 603 via a guide sleeve so as to be liftable. The first lifting drive mechanism 605 drives the weight tray 604 to move up and down along the column 603. The first lifting drive mechanism 605 includes a reduction motor and a screw mechanism, the reduction motor is fixedly installed on the base 601, the screw of the screw mechanism is vertically installed, the bottom end of the screw is connected to the output shaft of the reduction motor, the top end of the screw is installed on the top plate 602 via a bearing, and the nut of the screw mechanism is fixedly installed on the weight tray 604. The reduction motor drives the screw to rotate, thereby driving the weight tray 604 to move up and down along the column 603. The beneficial effect of adopting the above technical solution is that the weights can be loaded and unloaded smoothly automatically.

[0049] like Figure 3 As shown, in other embodiments of the present invention, the weight 50 includes a plurality of stacked weight units 501, and adjacent weight units 501 are connected in series via weight hanging nails 502. The beneficial effects of the above technical solution are: when the lower weight unit is lifted, the weight hanging nails 502 are separated from the hanging nail holes 503 of the upper weight unit, and the lower weight unit is unloaded; when the lower weight unit is suspended by its own weight, the weight hanging nails 502 are hung with the hanging nail holes 503 of the upper weight unit, and the dead weight is loaded onto the electronic weighing instrument through the weight hanging rack; through the combination of weight units, the weight of a single weight unit is reduced, which is convenient for weight transfer and also convenient for setting multiple quantitative specifications according to flow verification requirements.

[0050] In other embodiments of the present invention, a dustproof box is provided on the periphery of the weight. The beneficial effect of adopting the above technical solution is: preventing dust from adhering to or corroding the weight, ensuring that the weight maintains high precision for a long time.

[0051] In some other embodiments of the present invention, a controller, a first reader and a second reader are further included. The weight loading mechanism, the electronic weighing instrument, the flow meter to be tested, the first reader and the second reader are all connected to the controller signal. After receiving the action signal of the weight loading mechanism, the controller processes and issues a command signal to control the first reader to read the weighing data of the electronic weighing instrument; after receiving the weighing data signal of the electronic weighing instrument, the controller processes and issues a command signal to control the second reader to read the flow data of the flow meter to be tested. The beneficial effect of adopting the above technical solution is: automatic, real-time and accurate data collection, and high-precision verification or calibration of the flow meter is achieved.

[0052] like Figure 2 As shown, in other embodiments of the present invention, the weight hanger 40 includes a first suspension rod 401, a suspension plate 402 and a second suspension rod 403, the number of the first suspension rods 401 is at least 2, the top of the first suspension rod 401 is mounted on the lug of the outer wall of the fluid collection device 30 via a spherical joint bearing, the lower end of the first suspension rod 401 is mounted on the arm of the suspension plate 402 via a spherical joint bearing, the top of the second suspension rod 403 is mounted in the center hole of the suspension plate 402 via a spherical joint bearing, and the lower end of the second suspension rod 403 is connected to the center of the top surface of the weight 50 via a universal joint. The beneficial effect of adopting the above technical solution is: ensuring that the weight mass can be accurately loaded onto the electronic weighing instrument.

[0053] like Figure 4 As shown, in other embodiments of the present invention, the hanging plate 402 includes a central column 4021 and a plurality of arms 4022 extending outward from the central column 4021, a horizontal connecting arm 4023 is connected between adjacent arms 4022, an oblique support arm 4024 is provided on the bottom surface of each arm 4022, the two ends of the oblique support arm 4024 are respectively connected between the arm 4022 and the central column 4021, and a reinforcing support column 4025 is provided between each arm 4022 and the oblique support arm 4024 below it. The beneficial effect of adopting the above technical solution is: ensuring the structural strength and force transmission stability of the hanging plate.

[0054] like Figure 5-7As shown, in some other embodiments of the present invention, a weight lifting mechanism 70 is also provided on the base 601 of the weight loading mechanism 60, and the body of the weight lifting mechanism 70 is located below the weight tray 604. The weight lifting mechanism 70 includes at least 4 lifting columns 701, and the weight tray 604 is provided with a clearance hole that runs through the top and bottom for the lifting columns 701 to pass through. The weight lifting mechanism 70 can drive the lifting columns 701 to rise and lift the weight 50 from the weight tray 604 and detach it from the weight tray 604; it also includes a weight removal mechanism 80 arranged on one side of the weight loading mechanism 60, and the weight removal mechanism 80 includes a base 801, a first guide rail 802, a movable frame 803, a first translation drive mechanism 804, a second guide rail 805, a translation support plate 806 and a second translation drive mechanism 807, and the movable frame 803 includes a lower shelf layer 8031, a vertical support column 8032 and an upper shelf layer 8 033, the vertical support column 8032 is connected between the lower shelf layer 8031 ​​and the upper shelf layer 8033. In the translation direction of the mobile frame 803, the length of the lower shelf layer 8031 ​​is less than the length of the upper shelf layer 8033. The part of the upper shelf layer 8033 that is longer than the lower shelf layer 8031 ​​is the cantilever 8034. The cantilever 8034 is located on the side close to the weight loading mechanism 60. The vertical support column is not set at the position below the cantilever 8034. The first guide rail 8034 is provided with a vertical support column. 02 is installed on the base 801, the lower shelf 8031 ​​of the mobile frame 803 is installed on the first guide rail 802 in a movably manner, the first translation driving mechanism 804 drives the mobile frame 803 to translate along the first guide rail 802, the second guide rail 805 is installed on the upper shelf 8033 of the mobile frame, the translation support plate 806 is movably installed on the second guide rail 805, and the second translation driving mechanism 807 drives the translation support plate 806 to translate along the second guide rail 805. A weight verification comparator is also provided on one side of the weight removal mechanism 80, as well as a hoisting mechanism 90 for moving the weight from the translation support plate 806 to the weight verification comparator.When the weight 50 needs to be calibrated, the weight 50 is first detached from the weight hanger 40, and the weight loading mechanism 60 then lowers the weight so that the weight tray 604 is lowered to a height below the bottom surface of the upper shelf 8033 of the moving frame, and the lifting column 701 of the weight lifting mechanism lifts the weight 50 upward to make the weight detach from the weight tray 604. At the same time, the bottom surface height of the weight is higher than the top surface height of the translation support plate 806, and the first translation drive mechanism 804 moves the moving frame 803 to the side of the weight loading mechanism 60, so that the upper shelf cantilever 8034 of the moving frame extends under the weight, and then the weight tray 604 is driven to rise through the first lifting mechanism of the weight loading mechanism until it contacts the bottom surface of the upper shelf cantilever 8034 of the moving frame and stops, and the second The translation drive mechanism 807 then drives the translation pallet 806 to move to the side of the cantilever 8034, and the weight lifting mechanism then drives the lifting column 701 to descend, so that the weight falls completely on the translation pallet 806, and the second translation drive mechanism 807 then drives the translation pallet 806 and the weight 50 to move out of the weight loading mechanism to the non-cantilever side of the mobile frame 803, and the first lifting mechanism of the weight loading mechanism then drives the weight tray 604 to descend and disengage from the upper shelf cantilever 8034 of the mobile frame, and finally the first translation drive mechanism 804 drives the entire mobile frame 803 and the weight 50 to move out and away from the weight loading mechanism, so as to realize the smooth and stable transfer of large-tonnage weights, and finally the weight is moved to the weight calibration comparator for calibration through the lifting mechanism.

[0055] In some other embodiments of the present invention, a method for quantitatively measuring a fluid comprises the following steps:

[0056] Step 1, before the fluid to be measured is added to the fluid collection device, the corresponding mass value M is calculated according to the target flow value V of the fluid to be measured, and a weight with a mass value of M and a known precision value is loaded on the weight rack, and after the weight is loaded, the reading K of the electronic weighing instrument is read;

[0057] Step 2, unloading the loaded weight with mass value M from the weight rack;

[0058] Step 3, put a certain amount of fluid into the fluid collection device until the reading of the electronic weighing instrument becomes K, and the flow value flowing into the fluid collection device at this time is the target flow value V;

[0059] Step 4. Select weights of corresponding mass as needed and repeat steps 1 to 3.

[0060] By utilizing the high precision and good long-term stability of the weights and the good short-term repeatability of the electronic weighing instrument, high-precision quantification of the flow meter flow can be achieved, thereby improving the accuracy of the flow meter calibration or verification results.

[0061] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable ordinary technicians in the field to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A fluid quantitative metering method, using a high-precision fluid quantitative metering device, characterized in that: The high-precision fluid quantitative metering device comprises: Structural frame; An electronic weighing instrument, which is installed on the structural frame; A fluid collecting device, which is used to collect the fluid to be measured and is placed on the electronic weighing instrument; A weight hanger, which is used to hang the loaded weight, and the upper part of the weight hanger is connected to the fluid collection device or the electronic weighing instrument; A weight, which is hung below the weight hanger, and the accuracy of the weight is a known value; The fluid quantitative metering method comprises the following steps: Step 1, before the fluid to be measured is added to the fluid collection device, the corresponding mass value M is calculated according to the target flow value V of the fluid to be measured, and a weight with a mass value of M and a known precision value is loaded on the weight rack, and after the weight is loaded, the reading K of the electronic weighing instrument is read; Step 2, unloading the loaded weight with mass value M from the weight rack; Step 3, put a certain amount of fluid into the fluid collection device until the reading of the electronic weighing instrument becomes K, and the flow value flowing into the fluid collection device at this time is the target flow value V; Step 4. Select weights of corresponding mass as needed and repeat steps 1 to 3.

2. The method for quantitatively measuring fluid according to claim 1, characterized in that: The high-precision fluid quantitative metering device also includes a weight loading mechanism, which includes a base, a top plate, a column, a weight tray and a first lifting drive mechanism. The top end of the column is fixedly connected to the top plate, and the bottom end of the column is fixedly connected to the base. The weight tray is liftably installed on the column via a guide sleeve, and the first lifting drive mechanism drives the weight tray to move up and down along the column.

3. The fluid quantitative metering method according to claim 2, characterized in that: The first lifting drive mechanism includes a reduction motor and a screw mechanism, the reduction motor is fixedly mounted on the base, the screw of the screw mechanism is vertically mounted, the bottom end of the screw is connected to the output shaft of the reduction motor, the top end of the screw is mounted on the top plate via a bearing, the nut of the screw mechanism is fixedly mounted on the weight tray, the reduction motor drives the screw to rotate, and then drives the weight tray to move up and down along the column.

4. The method for quantitatively measuring fluid according to claim 2, characterized in that: The weight comprises a plurality of weight units which are stacked and arranged, and adjacent weight units are connected in series via weight hanging nails.

5. The method for quantitatively measuring fluid according to claim 4, characterized in that: A dustproof box is provided on the periphery of the weight.

6. The method for quantitatively measuring fluid according to claim 2, characterized in that: The high-precision fluid quantitative metering device also includes a controller, a first reader and a second reader. The weight loading mechanism, the electronic weighing instrument, the flow meter to be detected, the first reader and the second reader are all connected to the controller signal. After receiving the action signal of the weight loading mechanism, the controller processes and sends an instruction signal to control the first reader to read the weighing data of the electronic weighing instrument; after receiving the weighing data signal of the electronic weighing instrument, the controller processes and sends an instruction signal to control the second reader to read the flow data of the flow meter to be detected.

7. The method for quantitatively measuring fluid according to claim 1, characterized in that: The weight hanger includes a first hanger rod, a hanging plate and a second hanger rod, the number of the first hanger rods is at least 2, the top end of the first hanger rod is installed on the hanging ear of the outer wall of the fluid collection device via a spherical joint bearing, the lower end of the first hanger rod is installed on the support arm of the hanging plate via a spherical joint bearing, the top end of the second hanger rod is installed in the center hole of the hanging plate via a spherical joint bearing, and the lower end of the second hanger rod is connected to the top surface center of the weight via a universal joint.

8. The method for quantitatively measuring fluid according to claim 7, characterized in that: The hanging platform includes a central column and a plurality of arms extending outward from the central column, a horizontal connecting arm is connected between adjacent arms, an oblique support arm is provided on the bottom surface of each arm, both ends of the oblique support arm are respectively connected between the arm and the central column, and a reinforcing support column is provided between each arm and the oblique support arm below it.

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