CN101947371B - Agricultural deep-well aid device - Google Patents
Agricultural deep-well aid device Download PDFInfo
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- CN101947371B CN101947371B CN2010102799985A CN201010279998A CN101947371B CN 101947371 B CN101947371 B CN 101947371B CN 2010102799985 A CN2010102799985 A CN 2010102799985A CN 201010279998 A CN201010279998 A CN 201010279998A CN 101947371 B CN101947371 B CN 101947371B
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Abstract
The invention relates to an agricultural deep-well aid device, belonging to the technical field of aid salvage equipment, which comprises a foldable external device and a winding engine arranged on the top of the foldable external device in a matched mode, wherein the winding engine is in wireless communication connection with a signal transceiver; the foldable external device is a hollow cylinder with the interior capable of containing the well aid device; the top of the well aid device is provided with a rope mounting bracket in a matched mode; a rope on the well aid device passes through the rope mounting bracket and is connected with the winding engine; and the well aid device, the winding engine, the signal transceiver and a control system of a computer are connected through wireless signals. The invention adopts the above technology and has the advantages that the time and the labor are saved; the stability is good; the aid device is controlled and operated by a computer in the course of aid; the flexibility of the aid device in the course of well activities is enhanced; the flexibility of aid is increased; and the success rate of the aid is enhanced.
Description
Technical field
The invention belongs to rescue and salvage the equipment technology field, be specifically related to a kind of agricultural deep well rescue device that is applicable to that people in the small diameter deep well of rural area or thing are salvaged.
Background technology
Pumping irrigation well is the particularly important field irrigation and the human livestock drinking water facility of northern area of China, is the important substance basis that developing agricultural is produced.Pumping irrigation well is to break into vertical deep-well by drilling well, does not generally all wait to tens of rice at tens meters, and diameter is many at 30～50 centimetres; Many motor-pumped wells are because the long-term lacking management is distributed in the field again, the careless slightly wells that will fall into such as peasant, child or animal; Cause security incident, in recent years, the rural irrigation motor-pumped well is eaten the people, the incident of hurting sb.'s feelings takes place repeatedly; Make many families experience misfortunes, serious threat peasant's the security of the lives and property has influenced rural economic development.According to incompletely statistics, nearly 400～5,000,000 mouthfuls of motor-pumped wells in the whole nation, the whole nation is annual 400～500 motor-pumped wells takes place to eat people's incident of hurting sb.'s feelings, and causes 3,600 ten thousand yuan of direct economic losses.
Generally in the deep well rescue field at present have three kinds of rescue modes: 1 rescue personnel rescue 2 rescue personnels that directly go into the well utilize homemade rope to rescue 3 large-scale excavating equipments rescues.All there is very big defective in these three kinds of methods self.The rescue mode that 1 rescue personnel directly goes into the well has very big danger to the rescuer itself that goes into the well, and the firefighters of the rescue of going into the well is handstand state often and goes into the well.The people stand upside down if the time slightly length phenomenons such as dizziness, expiratory dyspnea will appear, when serious even can occur fainting.When the narrow and falling man of motor-pumped well falls into when putting than deep-seated, go into the well and rescue the people and for the rescue personnel, can become dangerous more, because rescue personnel itself also is easy to blocked by the borehole wall like this.This under many circumstances method can not be implemented .2 and utilize the homemade rope rescue scope of application very little; And can only be in person down the well's mind clear and can the situation of movable part limbs under its effect of competence exertion, blocked and just can be lost efficacy when stiff in case run into the clouded in mind or limbs of person down the well.3 to employ the required time of this rescue mode of large-scale excavating equipment long especially, tends to reach more than 5 hours, greatly reduces person down the well's survival rate.In the process of excavator earth excavation, very easily cause landslide, cause huge potential safety hazard as if dealing with improperly.
Can know that according to statistics messenger's accident of falling into motor-pumped well accidentally takes place frequently in recent years, though when a lot of accidents take place; The fire-fighting and rescue personnel can be on the scene and implement rescue; But the example that success is rescued is few, and the death rate of dropping into accident maintains more than 70% always, makes the people startling.
Therefore, design a kind of downhole rescuing of highly effective and safe and rescue robot for solving the problems of China in the downhole rescuing field, the life security that ensures the person down the well is very necessary.
Summary of the invention
To the problems referred to above that exist in the prior art, the object of the present invention is to provide a kind of easy to usely, safety coefficient is high, is applicable to the agricultural deep well rescue device that people in the small diameter deep well of rural area or thing are salvaged.
Described a kind of agricultural deep well rescue device; It is characterized in that comprising collapsible external device and being equipped with the hoist engine that is connected with the signal receiving/transmission device radio communication at collapsible external device top; Described collapsible external device is a hollow cylinder; Underwell rescue device is equipped with in the hollow cylinder of collapsible external device; Described Underwell rescue device top is equipped with the lanyard frame, and the rope on the Underwell rescue device passes the lanyard frame and is connected with hoist engine, and described Underwell rescue device, hoist engine, signal receiving/transmission device are connected through wireless signal with computerized control system.
Described a kind of agricultural deep well rescue device; It is characterized in that described collapsible external device is a hollow cylinder; The bottom is equipped with one group of universal wheel; The hollow cylinder bottom is equipped with the movable telescopic support, be equipped with on the hollow cylinder buckle that is used for fixing telescope support, fixedly Underwell rescue device dowel hole and make things convenient for the handle of mobile device.
Described a kind of agricultural deep well rescue device is characterized in that described Underwell rescue device comprises down-hole positioning device that is equipped with under the fixedly chuck assembly that is connected with the lanyard frame, the bottom bracket that is connected with fixing chuck assembly, the bottom bracket and the clamping device that is connected with down-hole positioning device.
Described a kind of agricultural deep well rescue device; It is characterized in that described fixedly chuck assembly is installed in the top of Underwell rescue device; Be made up of chuck main body and ejection part, described chuck main body top is provided with the bayonet socket that links to each other with rope, and the chuck main body middle part fixedly installs the strip slideway that joins through bearing and rotary disk; The chuck main body bottom is connected through three fixed legs and accurate positioning device; Described strip slideway is three, and three strip slideways surround an equilateral triangle, and every strip slideway matches with the slide rail of ejection part respectively; Described ejection part comprises ejecting panel, ejecting panel surface and be equipped with rubber sheet gasket, eject panel inner wall and be equipped with slide rail.
Described a kind of agricultural deep well rescue device; It is characterized in that described rotary disk combines with chuck main body through the bearing that is positioned at the chuck main body center; The outer peripheral bearing that links to each other with the strip slideway that is equipped with of rotary disk, rotary disk bottom centre also is connected with the synchronous pulley device.
Described a kind of agricultural deep well rescue device; It is characterized in that described down-hole positioning device is made up of bottom bracket and the rotary positioning apparatus, communication system device and the radial expansion positioner that are equipped with on bottom bracket; Described bottom bracket heart place therein is symmetrically distributed with two bearings, and bearing links to each other with the motor that drives its rotation; Described rotary positioning apparatus comprises sliding tray, passes through to be with synchronously the motor that is connected with sliding tray; Described radial expansion positioner comprises and is equipped with at the fixed block on the bottom bracket, is equipped with the sliding shoe in sliding tray; Sliding shoe one end is threaded with the tooth bar; The tooth bar other end is connected with motor on being fixed on bottom bracket, and the sliding shoe other end is connected with clamping device through securing member.
Described a kind of agricultural deep well rescue device is characterized in that described clamping device comprises flexible mechanical jig arm and the moving telescopic arm of three economize on electricitys, and described flexible mechanical jig arm bottom is equipped with the jig arm finger; The moving telescopic arm bottom of described three economize on electricitys is equipped with lifts arm.
Described a kind of agricultural deep well rescue device is characterized in that said flexible mechanical jig arm comprises in jig arm overcoat, the described jig arm overcoat to be equipped with the jig arm cursor slide, and jig arm cursor slide bottom is through jig arm sliding shoe and the flexible connection of jig arm finger.
Described a kind of agricultural deep well rescue device; It is characterized in that telescopic arm overcoat, telescopic arm first order cursor slide, telescopic arm second level cursor slide, the activity of described telescopic arm second level cursor slide bottom that the moving telescopic arm of described three economize on electricitys comprises that socket from outside to inside connects are provided with and lift arm, cursor slide middle part in the telescopic arm second level is equipped with elasticity and lifts bar.
Described a kind of agricultural deep well rescue device is characterized in that described communication system device comprises loudspeaker, camera and the illuminating lamp that is fixedly installed on, and described camera is fixedly connected with motor on being fixedly installed on bottom bracket through metal hose.
Compared with prior art, beneficial effect of the present invention is following:
1), the design of collapsible external device, solved the storage and the problem of moving of Underwell rescue device, and the setting up fast of machine when having realized rescue, saved rescue time.
2), through the fixedly setting of chuck, solved deliverance apparatus position problem of unstable when underground work.
3), positioner realized the accurate adjustment of the position of downhole rescuing arm, increased the scope of application of deliverance apparatus, improved the efficient and the success rate of rescue.
4), the design of scalable mechanical jig arm and the moving telescopic arm of three economize on electricitys; Rescue space when having utilized the person down the well to fall well; Realized to the clamping of person down the well left and right sides shoulder and to before and after it with the lifting of bottom, increased the flexibility of rescue, improved the success rate of rescuing.
5), in the rescue process, illuminating lamp, the comprehensive use of wireless camera and wireless telecommunications system makes the rescue personnel can understand the environment of down-hole very intuitively, and can in time understand down-hole personnel to fall into well's situation, has realized informationalized rescue.
6), whole process is through wireless signal transceiver and control system, realized the radio operation of deliverance apparatus in the rescue process, strengthened the flexibility when the deliverance apparatus down-hole is movable.
Description of drawings
Fig. 1 is the blanket figure of correlation between apparatus of the present invention;
Fig. 2 controls the system works theory diagram for the present invention;
Fig. 3 is a movable outer apparatus structure sketch map of the present invention;
Fig. 4 is a Underwell rescue device structural representation of the present invention;
Fig. 5 is the fixing chuck apparatus structure sketch map of the present invention;
Fig. 6 is a rotary positioning apparatus structural representation of the present invention.
Among the figure: 1-computerized control system, 2-signal receiving/transmission device, 3-hoist engine, the collapsible external device of 4-, 4a-buckle, 4b-handle, 4c-universal wheel; 4d-movable telescopic support, 4e-dowel hole, 5-lanyard frame, 5a-rope, 6-strip slideway, 7-ejection part, 8-rotary disk; The 8a-bearing, 8b-synchronous pulley device, 9-sliding tray, 9a-fixed block, 9b-tooth bar, 9c-motor, 10-sliding shoe; The 11-bottom bracket, the 11a-bearing, 11b-is with synchronously, 11c-motor, 12-jig arm overcoat, 13-jig arm cursor slide; 14-arm sliding shoe, 15-jig arm finger, 16-elasticity is lifted bar, and 17-lifts arm, 18-telescopic arm second level cursor slide, 19-telescopic arm first order cursor slide; 20-telescopic arm overcoat, 21-loudspeaker, 22-camera, 23-motor, 24-illuminating lamp, 25-fixed leg.
The specific embodiment
Below in conjunction with Figure of description the present invention is done further description:
Shown in Fig. 1-6; A kind of agricultural deep well rescue device; It is characterized in that comprising collapsible external device 4 and being equipped with the hoist engine 3 that is connected with signal receiving/transmission device 2 radio communications at collapsible external device 4 tops; Described collapsible external device 4 is a hollow cylinder, and Underwell rescue device is equipped with in the hollow cylinder of collapsible external device 4, and described Underwell rescue device top is equipped with lanyard frame 5; Rope 5a on the Underwell rescue device passes lanyard frame 5 and is connected with hoist engine 3, and described Underwell rescue device, hoist engine 3, signal receiving/transmission device 2 and computerized control system 1 are connected through wireless signal.
As shown in Figure 3, collapsible external device 4 is a hollow cylinder, can place Underwell rescue device; The bottom is equipped with one group of universal wheel 4c, is convenient to conveniently moving, and the hollow cylinder bottom is equipped with movable telescopic support 4d; Open the whole device of support by this support during use; By being made up of the different steel pipes of two diameters, little steel pipe bottom is equipped with the metal anti-skid ball and is placed in big steel pipe inside, all is equipped with pin via hole on two steel pipe walls; Can realize the function of the antenna height of the aboveground part of adjusting device through pin at the latch of two steel pipe diverse locations; When not using telescope support 4d is packed up, upwards be buckled among the buckle 4a fixingly, also be provided with the dowel hole 4e of fixing Underwell rescue device on the cylinder and make things convenient for the handle 4b of mobile device.
Shown in Fig. 4-6, described Underwell rescue device comprises down-hole positioning device that the fixedly chuck assembly that is connected with lanyard frame 5, the bottom bracket 11, the bottom bracket that are connected with fixing chuck assembly are equipped with for 11 times and the clamping device that is connected with down-hole positioning device.Described fixedly chuck assembly is installed in the top of Underwell rescue device, is made up of chuck main body and ejection part 7.Described chuck main body as shown in Figure 5 top is provided with the bayonet socket that links to each other with rope 5a; The chuck main body middle part fixedly installs the strip slideway 6 that joins through bearing 8a and rotary disk 8, and the chuck main body bottom is connected through three fixed legs 25 and accurate positioning device, and described strip slideway 6 is three; Article three, strip slideway 6 surrounds an equilateral triangle; Every strip slideway 6 matches with the slide rail of ejection part 7 respectively, and strip slideway 6 comprises slideway and connecting rod, described ejection part 7; Comprise and eject panel, eject panel surface and be equipped with rubber sheet gasket, eject panel inner wall and be equipped with slide rail; Rubber sheet gasket adopts the bigger silicon rubber of coefficient of friction, and in the one side that ejects panel, this surface directly contacts with the borehole wall rubber sheet gasket through adhesive coverage; Increase the coefficient of friction between the ejection part and the borehole wall, strengthen fixed effect.Described rotary disk 8 combines with chuck main body through the bearing that is positioned at the chuck main body center, the rotary disk 8 outer peripheral bearing 8a that link to each other with strip slideway 6 that are equipped with, and rotary disk 8 bottom centre also are connected with synchronous pulley device 8b.
As shown in Figure 6; Described down-hole positioning device is made up of bottom bracket 11 and the rotary positioning apparatus, communication system device and the radial expansion positioner that are equipped with on bottom bracket 11; Described bottom bracket 11 heart place therein is symmetrically distributed with two bearing 11a, and bearing 11a links to each other with the motor that drives its rotation; Described rotary positioning apparatus comprises sliding tray 9, the motor 11c through being with 11b to be connected with sliding tray 9 synchronously; Described radial expansion positioner comprises and is equipped with at the fixed block 9a on the bottom bracket 11, is equipped with the sliding shoe 10 in sliding tray 9; Sliding shoe 10 1 ends are threaded with tooth bar 9b; The tooth bar 9b other end is connected with motor 9c on being fixed on bottom bracket 11, and sliding shoe 10 other ends are connected with clamping device through securing member.
As shown in Figure 4, clamping device comprises flexible mechanical jig arm and the moving telescopic arm of three economize on electricitys, and described flexible mechanical jig arm bottom is equipped with jig arm finger 15; The moving telescopic arm bottom of described three economize on electricitys is equipped with lifts arm 17; Flexible mechanical jig arm comprises in jig arm overcoat 12, the described jig arm overcoat 12 and is equipped with jig arm cursor slide 13 that jig arm cursor slide 13 bottoms flexibly connect through jig arm sliding shoe 14 and jig arm finger 15; The moving telescopic arm of three economize on electricitys comprises that telescopic arm overcoat 20, telescopic arm first order cursor slide 19, telescopic arm second level cursor slide 18, the activity of cursor slide 18 bottoms, the described telescopic arm second level that socket from outside to inside connects are provided with and lift arm 17; Cursor slide 18 middle parts, the telescopic arm second level are equipped with elasticity and lift bar 16; Described communication system device comprises loudspeaker 21, camera 22 and the illuminating lamp 24 that is fixedly installed on, and described camera 22 is fixedly connected with motor 23 on being fixedly installed on bottom bracket 11 through metal hose.
Use of the present invention: when rescue work was carried out, movable outer device 3 set up expansion in uphole, and computer control system 1 and wireless signal transceiver 2 are started working; Rope 5a is linked to top lanyard frame 5; This moment, hoist engine 4 was started working, and the main body of Underwell rescue device begins to descend and gets in the well, and illuminating lamp 24 is opened; Illuminate environment in the well; The camera 22 production wells hypograph of starting working, camera electric rotating machine 23 rotate and drive cameras 22 and rotate, and have reached the purpose that multi-faceted image information is gathered.The Underwell rescue device main body continues to descend, and 0.5 to 1 meter stops to descend above the person down the well.
After deliverance apparatus arrives assigned address; Aboveground personnel rotate through computer control system 1 control driven by motor rotary disk 8; The rotation of rotary disk 8 is delivered to the fixedly ejection part 7 of chuck through connecting rod, and fixedly the ejection part 7 of chuck moves outside rotary disk 8 along the fixing strip slideway 6 of chuck and withstands the borehole wall up to ejection part 7 and be fixed on the borehole wall.According to the concrete condition of down-hole, the work that aboveground operating personnel control motor is rotated sliding tray 9, regulates thereby the rotation of sliding tray 9 directly drives the rotation of the jig arm overcoat 12 rotation arrival mechanical arm positions that are attached thereto.Sliding shoe 10 can be along sliding tray 9 rectilinear motions under the drive of the motor 9c that is built in sliding tray 9, and sliding shoe 10 links to each other with jig arm overcoat 12, has reached the function of radially adjusting the mechanical arm position.Jig arm sliding shoe 14 can move along jig arm overcoat 12 under the drive of the motor that is built in jig arm overcoat 12, reaches the function of regulating the arm position at vertical direction.Jig arm sliding shoe 14 can be realized moving up and down under the drive of the motor that is built in jig arm cursor slide 13; It is 15 hinged that jig arm sliding shoe 14 and jig arm are pointed; The opening and closing of " S " jig arm finger 15 are being controlled in moving up and down of jig arm sliding shoe 14, carry out clamping through the shoulder of regulating the person down the well.The corresponding adjusting with mechanical jig arm is regulated in the rotation adjusting of the moving telescopic arm of three economize on electricitys and radial position; Principle is consistent; The machine operation that is built in telescopic arm overcoat 20 drives telescopic arm first order cursor slide 19 and slides, and telescopic arm first order cursor slide 19 is with telescopic arm second level cursor slide 18 and lift arm 17 and be connected with spring through pulley.Telescopic arm second level cursor slide 18 is along telescopic arm overcoat 20 slides within when telescopic arm first order cursor slide 19 slides, in close at telescopic arm second level cursor slide 18 the arm 17 of lifting slowly launch.When telescopic arm second level cursor slide 18 reaches the limit of the position, lift arm 17 and launch also self-locking fully.This moment elasticity lift 16 before and after the person down the well both sides lift him, lift arm 17 and lift the person down the well in the bottom.When efficiency confirmed ground clamping with lift after, the slow lifting deliverance apparatus main body of hoist engine 4 beginning goes out person down the well's lifting after the well head, rescue work finishes.When the present invention operates, send signal by computer control system 1, camera 22 IMAQs are that aboveground personnel's operation provides foundation, and aboveground personnel continue through the communication of loudspeaker 21 with the person down the well all the time.
Claims (9)
1. agricultural deep well rescue device; It is characterized in that comprising collapsible external device (4) and be equipped with the hoist engine (3) that is connected with signal receiving/transmission device (2) radio communication at collapsible external device (4) top; Described collapsible external device (4) is a hollow cylinder; Underwell rescue device is equipped with in the hollow cylinder of collapsible external device (4); Described Underwell rescue device top is equipped with lanyard frame (5); Rope on the Underwell rescue device (5a) passes lanyard frame (5) and is connected with hoist engine (3); Described Underwell rescue device, hoist engine (3), signal receiving/transmission device (2) are connected through wireless signal with computerized control system (1), and described collapsible external device (4) is a hollow cylinder, and the bottom is equipped with one group of universal wheel (4c); The hollow cylinder bottom is equipped with movable telescopic support (4d), is equipped with the buckle (4a) that is used for fixing telescope support (4d), the fixing dowel hole of Underwell rescue device (4e) and make things convenient for the handle (4b) of mobile device on the hollow cylinder.
2. a kind of agricultural deep well rescue device according to claim 1 is characterized in that described Underwell rescue device comprises down-hole positioning device that is equipped with under the fixedly chuck assembly that is connected with lanyard frame (5), the bottom bracket (11) that is connected with fixing chuck assembly, the bottom bracket (11) and the clamping device that is connected with down-hole positioning device.
3. a kind of agricultural deep well rescue device according to claim 2; It is characterized in that described fixedly chuck assembly is installed in the top of Underwell rescue device; Be made up of chuck main body and ejection part (7), described chuck main body top is provided with the bayonet socket that links to each other with rope (5a), and the chuck main body middle part fixedly installs the strip slideway (6) that joins through bearing (8a) and rotary disk (8); The chuck main body bottom is connected through three fixed legs (25) and accurate positioning device; Described strip slideway (6) is three, and three strip slideways (6) surround an equilateral triangle, and every strip slideway (6) matches with the slide rail of ejection part (7) respectively; Described ejection part (7) comprises ejecting panel, ejecting panel surface and be equipped with rubber sheet gasket, eject panel inner wall and be equipped with slide rail.
4. a kind of agricultural deep well rescue device according to claim 3; It is characterized in that described rotary disk (8) combines with chuck main body through the bearing that is positioned at the chuck main body center; The outer peripheral bearing (8a) that links to each other with strip slideway (6) that is equipped with of rotary disk (8), rotary disk (8) bottom centre also is connected with synchronous pulley device (8b).
5. a kind of agricultural deep well rescue device according to claim 2; It is characterized in that described down-hole positioning device is made up of bottom bracket (11) and the rotary positioning apparatus, communication system device and the radial expansion positioner that are equipped with on bottom bracket (11); Described bottom bracket (11) heart place therein is symmetrically distributed with two bearings (11a), and bearing (11a) links to each other with the motor that drives its rotation; Described rotary positioning apparatus comprises sliding tray (9), the motor (11c) through being with (11b) to be connected with sliding tray (9) synchronously; Described radial expansion positioner comprises and is equipped with at the fixed block (9a) on the bottom bracket (11), is equipped with the sliding shoe (10) in sliding tray (9); Sliding shoe (10) one ends are threaded with tooth bar (9b); Tooth bar (9b) other end is connected with motor (9c) on being fixed on bottom bracket (11), and sliding shoe (10) other end is connected with clamping device through securing member.
6. a kind of agricultural deep well rescue device according to claim 2 is characterized in that described clamping device comprises flexible mechanical jig arm and the moving telescopic arm of three economize on electricitys, and described flexible mechanical jig arm bottom is equipped with jig arm finger (15); The moving telescopic arm bottom of described three economize on electricitys is equipped with lifts arm (17).
7. a kind of agricultural deep well rescue device according to claim 6; It is characterized in that said flexible mechanical jig arm comprises in jig arm overcoat (12), the described jig arm overcoat (12) is equipped with jig arm cursor slide (13), and jig arm cursor slide (13) bottom flexibly connects through jig arm sliding shoe (14) and jig arm finger (15).
8. a kind of agricultural deep well rescue device according to claim 6; It is characterized in that telescopic arm overcoat (20), telescopic arm first order cursor slide (19), telescopic arm second level cursor slide (18), the activity of described telescopic arm second level cursor slide (18) bottom that the moving telescopic arm of described three economize on electricitys comprises that socket from outside to inside connects are provided with and lift arm (17), telescopic arm second level cursor slide (18) middle part is equipped with elasticity and lifts bar (16).
9. a kind of agricultural deep well rescue device according to claim 5; It is characterized in that described communication system device comprises loudspeaker (21), camera (22) and the illuminating lamp (24) that is fixedly installed on, described camera (22) is fixedly connected with motor (23) on being fixedly installed on bottom bracket (11) through metal hose.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102799985A CN101947371B (en) | 2010-09-13 | 2010-09-13 | Agricultural deep-well aid device |
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| CN2010102799985A CN101947371B (en) | 2010-09-13 | 2010-09-13 | Agricultural deep-well aid device |
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| CN101947371A CN101947371A (en) | 2011-01-19 |
| CN101947371B true CN101947371B (en) | 2012-11-14 |
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| CN106390328A (en) * | 2016-11-25 | 2017-02-15 | 凤浩 | Deep well rescue robot |
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| CN111840850B (en) * | 2020-07-29 | 2022-03-15 | 何秋锦 | Single rescue device |
| CN111745627B (en) * | 2020-07-29 | 2023-05-12 | 远盟康健科技有限公司 | Auxiliary rescue mechanical arm |
| CN114310972B (en) * | 2022-03-01 | 2022-06-07 | 山东建筑大学 | A rotary balance lifts platform for installation of arc support |
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