CN104129721B - Material transport revolution device - Google Patents
Material transport revolution device Download PDFInfo
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- CN104129721B CN104129721B CN201410343910.XA CN201410343910A CN104129721B CN 104129721 B CN104129721 B CN 104129721B CN 201410343910 A CN201410343910 A CN 201410343910A CN 104129721 B CN104129721 B CN 104129721B
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Abstract
The invention discloses a material transport revolution device and belongs to the field of a dry mixed mortar transport system for building. The material transport revolution device is characterized in that the material transport revolution device comprises a rotary pot hoist and a mortar pot (1) combined with the rotary pot hoist, the rotary pot hoist comprises a chassis (2), a vertical beam (3) and a lifting arm (4), the chassis (2) is a base built from reinforced concrete, the center of the upper part of the chassis (2) is provided with the vertical beam (3), the top of the vertical beam (3) is provided with the transverse lifting arm (4), the lifting arm (4) is provided with a sling (5) for hanging the mortar pot (1), the mortar pot (1) is a cylindrical or square pot, the middle of the upper part of the mortar pot (1) is provided with an opening, the circumference of the upper part of the mortar pot (1) is provided with multiple lifting lugs (6), and the lower part of the mortar pot (1) is provided with a drawable air-tight door. The material transport revolution device realizes dry mixed mortar transport revolution, saves labor, is free of purchase of large-scale mixed mortar special-purpose transport vehicles, has a small investment and realizes environmental protection.
Description
Technical field
A kind of material transportation turnover device, belongs to material transporting system field, can be used for dry-mixed mortar, cement or chemical industry former
The transport turnover of material.
Background technology
Dry-mixed mortar refers to the aggregate of drying screening process（As quartz sand）, inorganic coagulation material（As cement）And interpolation
Agent（As polymer）In a kind of graininess carrying out physical mixed by a certain percentage or powdery mortar.Under prior art, do
Mortar is all to be transported to building site with form packed or in bulk, then adds water and directly uses after mixing and stirring.Such means of transportation, no
Only need manually to be operated in a large number, cause manpower to waste, and easily cause dust to distribute, pollute air and road ring
Border, cannot meet the demand of modern architecture transport service, and if run into thunderstorm weather, cover anxious, then can break up and be dry mixed
Mortar, causes damage.Also some large-scale building sites employ a kind of dry mixing mortar truck, and this transport vehicle carrying capacity is big, and need
It is equipped with special large-scale dry-mixed mortar storage tank, cost and maintenance costs are extremely expensive, cost of investment is high, is not suitable for
Middle-size and small-size building site uses.The less-in-demand building site especially to dry-mixed mortar, because cost of transport vehicle is too high, and transports one
Car is discontented with by secondary dress, causes the waste of cost.
Content of the invention
The technical problem to be solved in the present invention is：Overcome the deficiencies in the prior art, provide one kind to enable dry-mixed mortar fortune
Defeated turnover, saves manpower, need not buy large-scale mortar special transport vehicle, the material transportation turnover dress of small investment and environmental protection
Put.
The technical solution adopted for the present invention to solve the technical problems is：This kind of material transportation turnover device, including combination
The rotary tank using hangs and mortar jar, and described rotary tank bull ladle includes chassis, vertical beam and arm, and chassis is to adopt armored concrete
The base built by laying bricks or stones, vertical beam is installed in chassis upper center, and horizontal arm is installed at vertical beam top, arm is installed permissible
The hoist cable of lifting mortar jar；Chassis can prevent to topple with more than 6 tons of load-bearing；Hoist cable can slidably reciprocate along arm direction.
Described mortar jar adopts cylindrical shape or square tank, and mortar jar upper middle position is provided with opening, top circumference position
Install multiple hangers, mortar jar bottom be provided with can pull hermatic door.Rotary tank hangs and all can pass through general cargo with mortar jar
Car is transported, handling, can conveniently travel to and fro between stock ground and construction site；Mortar jar is convenient to be lifted, transport, without using
Transport vehicle transported by mortar, you can hoisting transportation, realizes easily transporting.
Further, transfer is installed in the middle and lower part of described vertical beam, and transfer includes steering spindle, steer motor and
Turn to chain, steering spindle pass through steering bearing coaxially connected with vertical beam together with, steer motor is arranged on vertical beam side, steer motor
Output shaft pass through to turn to chain and connect vertical beam, and drive vertical beam with steering spindle as axis rotation.Steer motor drives after starting and turns
Rotate to chain, turn to chain, with the sprocket wheel outside vertical beam, Chain conveyer occurs, drive vertical beam to rotate, realize turning to.
Further, described mortar jar is less than 1.5 meters for diameter, is highly less than 2 meters of cylindrical shape, or described sand
Slurry tank is less than 1.5 meters for the length of side, is highly less than 2 meters of square tank, mortar jar bottom is movably installed with supporting leg by fixing pipe.
When mortar jar is cylindrical shape, supporting leg is set to 3；When mortar jar is square, supporting leg is set to 4.Can by supporting leg
Directly to hang, to be supported on ground, and supporting leg is detachable, convenient transport.
Further, portable agitating device is installed in described supporting leg bottom, and portable agitating device includes agitator tank,
Stirring wing is installed inside agitator tank, agitator tank is supported by supporting leg and fixes, and supporting leg bottom is provided with wheel, and supporting leg centre position is pacified
Dress support plate, support plate is installed the motor that stirring wing can be driven to rotate.Stirring well width is less than 60 centimetres, of length no more than
1.5 meters, conveniently can pass in and out interior, and be placed on mortar jar bottom, the wheel at rear portion adopts common trundle, the wheel of front portion
Using universal wheel, it is conveniently steered.Driving motor output shaft passes through belt pulley or sprocket wheel chain belt moves stirring wing and rotates.
Preferably, described arm can hang structure using single-ended, it would however also be possible to employ both-end hangs structure.Hang knot using single-ended
During structure, arm one end lifts mortar jar by hoist cable, and the other end is equipped block；When hanging structure using both-end, arm two ends are all logical
Cross hoist cable lifting mortar jar, in hgher efficiency.
Preferably, described rotary tank hangs side and installs automatic stirring conveyer device, and automatic stirring conveyer device includes propping up
Frame, water tank is installed in support bottom, and frame upper installs delivery chute, is provided with stirring wing in delivery chute, and stirring wing is propped up by being arranged on
The Motor drive of frame side.Delivery chute can be directly entered from mortar jar dry-mixed mortar out, and water tank is in delivery chute
There is provided water, stirring wing rotates and realizes dry mixed mortar stirring, then flow out from delivery chute, used, automaticity is higher.
Preferably, described water tank has water inlet and outlet, and water inlet connects exterior line, water outlet by water inlet pipe
Mouth passes through to install water pump inside pipeline connection delivery chute, water tank.In water tank anhydrous when, water pump draws water into water tank, and water tank is to defeated
When sending water supply in groove, water pump up draining.
Preferably, described rotary tank hangs side and installs conveyer device, and conveyer device includes support, and water is installed in support bottom
Case, frame upper installs delivery chute, and blender is installed in support side.Can be directly entered defeated from mortar jar dry-mixed mortar out
Send groove, then enter blender from delivery chute and be stirred, during stirring, water tank can close according to how many materials provides for blender
The suitable water yield, prevent mortar stirring after viscosity excessively sticky or thin it is easier to control mortar quality.
Preferably, described water tank has water inlet and outlet, and water inlet connects exterior line, water outlet by water inlet pipe
Mouth passes through to install water pump inside pipeline connection blender, water tank.
Preferably, the top of described delivery chute is provided with vibrator.Vibrator can make to be placed on the sand of frame upper
Slurry tank vibrates, so that the material within mortar jar fully enters delivery chute, prevents material remaining phenomenon.
Preferably, described cantilever tip installs multiple positioning skewbacks.Positioning skewback makes mortar jar in lifting, can be light
Unclasp in cantilever tip, prevent and put inclined phenomenon.
Compared with prior art, the technique scheme of this material transportation turnover device is had an advantageous effect in that：
1st, realize dry-mixed mortar transport turnover, save manpower：The rotary tank that design can be applied in combination hangs and mortar jar, rotation
Turn tank bull ladle and include chassis, vertical beam and arm, chassis is the base built by laying bricks or stones using armored concrete, can with more than 6 tons of load-bearing,
Prevent to topple, mortar jar is diameter or the length of side is less than 1.5 meters, be highly less than 2 meters of small canister, rotary tank hangs and mortar jar
All can be transported by general wagon, handling, can conveniently be travelled to and fro between stock ground and construction site；Lorry can be utilized
Rotary tank is hung and is transported with multiple mortar jars filling dry-mixed mortar simultaneously, after reaching construction site, hung using rotary tank
Lifting is convenient to lift mortar jar, realizes the transport turnover of dry-mixed mortar, without using the shape packed or in bulk under prior art
Formula is transported, and without manually being loaded and unloaded, greatlys save labour, raises labour efficiency.
2nd, large-scale mortar special transport vehicle, small investment need not be bought：For small and medium construction building site, with this material fortune
Defeated turnover device, can save buy or the lease large-scale motar carrier vehicle of work expense, cost substantially reduces, and to being dry mixed
The less-in-demand building site of mortar, can avoid the too high problem of bulk transport car cost of transportation, prevent transport from once filling discontented car and
The cost bringing wastes.
3rd, transport turnover and mortar stirring several functions, high degree of automation can be realized：Rotary tank hangs side and installs
Automatic stirring conveyer device, can be directly entered delivery chute from mortar jar dry-mixed mortar out, and water tank is in delivery chute
There is provided water, stirring wing rotates and realizes dry mixed mortar stirring, then flows out from delivery chute and is used, it is possible to achieve dry-mixed mortar
Automatic stirring, automaticity is higher.
4th, environmental protection is clean, prevent contaminated air and road：It is loaded transporting dry-mixed mortar using mortar jar, can be effective
Prevent the dust being transported using form packed or in bulk from distributing problem, and prevent the isolation of packed packed and transported from asking
Topic, prevents contaminated air and road environment, meets the demand of modern architecture transport service.
5th, prevent using chemical industry bag and bag of cement, save packed cost：It is loaded transport using mortar jar and sand is dry mixed
Slurry, can effectively prevent the problem using chemical industry bag and bag of cement, for transporting dry-mixed mortar or cement, prior art
Under, one ton of dry-mixed mortar of transport needs with 20 packaging bags, and a packaging bag to be calculated by 0.8 yuan, and bagging is ton 16 per ton
Unit, can fill 2 tons of dry-mixed mortars to calculate according to a mortar jar, and 2 tons of dry-mixed mortars of transport can save 32 yuan of costs, one day week
Turn and then can save 64 yuan twice, January can save 1920 yuan of expense, substantially reduces packed cost of transportation, suitable popularization and application.
6th, prevent using chemical industry bag and bag of cement, energy saving, environmental protection：It is loaded transport using mortar jar dry
Mortar, can prevent using chemical industry bag and bag of cement, effectively reduce and manufacture the oil energy that chemical industry bag and bag of cement bring
Source wastes, and problem of environmental pollution, after promoting the use of, can save mass energy, environment protection for country.
7th, rain-proof waterproof, prevent the loss of goods problem brought because of thunderstorm weather：It is loaded using mortar jar and store
Dry-mixed mortar, can effectively waterproof, rain-proof, prevent from running into thunderstorm weather and break up dry-mixed mortar, damnous phenomenon occurs.
Brief description
Fig. 1 is the structural front view of the preferred embodiment of this material transportation turnover device.
Fig. 2 is the structural front view of the embodiment 2 of this material transportation turnover device.
Fig. 3 is the structural front view of the embodiment 3 of this material transportation turnover device.
Fig. 4 is the structural front view of the embodiment 4 of this material transportation turnover device.
Wherein：1st, mortar jar 2, chassis 3, vertical beam 31, steering spindle 32, steer motor 33, turn to chain 4,
Arm 5, hoist cable 6, hanger 7, supporting leg 8, support 9, water tank 10, delivery chute 11, vibrator 12, motor
13rd, water inlet pipe 14, blender 15, positioning skewback 16, agitator tank 17, supporting leg 18, wheel 19, support plate 20,
Motor.
Specific embodiment
Fig. 1 is the most preferred embodiment of this material transportation turnover device, and 1-4 does furtherly to the present invention below in conjunction with the accompanying drawings
Bright.
Embodiment 1
Referring to the drawings 1：A kind of material transportation turnover device, hangs and mortar jar 1, rotary tank including the rotary tank being applied in combination
Bull ladle includes chassis 2, vertical beam 3 and arm 4, and chassis 2 is the base built by laying bricks or stones using armored concrete, chassis 2 central upper portion position
Put installation vertical beam 3, horizontal arm 4 is installed at vertical beam 3 top, and arm 4 hangs structure using single-ended, arm 4 is installed and can lift
The hoist cable 5 of mortar jar 1.Transfer is installed in the middle and lower part of vertical beam 3, and transfer includes steering spindle 31, steer motor 32 and turns
To chain 33, steering spindle 31 pass through steering bearing coaxially connected with vertical beam 3 together with, steer motor 32 is arranged on vertical beam 3 side, turn
Pass through to turn to chain 33 connection vertical beam 3 to the output shaft of motor 32, and drive vertical beam 3 with steering spindle 31 as axis rotation.
Mortar jar 1 is less than 1.5 meters for diameter, is highly less than 2 meters of small cylinder shape tank, mortar jar 1 top is provided with circular cone
Shape covers, and cone capping centre position is provided with opening, and the circumferential position of cone capping arranges multiple hangers 6, under mortar jar 1
Portion be provided with can pull hermatic door.Mortar jar 1 bottom is movably installed with 3 supporting legs 7 by fixing pipe.
Embodiment 2
Referring to the drawings 2：Arm 4 hangs structure using single-ended, and mortar jar 1 adopts the length of side to be less than 1.5 meters, is highly less than 2 meters
Small-sized square tank body.Mortar jar 1 top is provided with taper capping, and cone capping centre position is provided with opening, cone capping
Circumferential position arrange multiple hangers 6, mortar jar 1 bottom be provided with can pull hermatic door.Rotary tank hangs side and installs automatic stirring
Conveyer device, automatic stirring conveyer device includes support 8, and multiple positioning skewbacks 15 are installed on support 8 top.Support 8 bottom is installed
Water tank 9, delivery chute 10 is installed on support 8 top, is provided with stirring wing, stirring wing is by being arranged on support 8 side in delivery chute 10
Motor 12 drives.The top of delivery chute 10 is provided with vibrator 11.Water tank 9 has water inlet and outlet, water inlet pass through into
Water pipe 13 connects exterior line, and outlet passes through pipeline connection delivery chute 10, and water tank 9 is internal to install water pump.
Remaining setting is same as Example 1.
Embodiment 3
Referring to the drawings 3：Arm 4 hangs structure using both-end, and mortar jar 1 adopts diameter to be less than 1.5 meters, is highly less than 2 meters
Small cylinder shape tank, mortar jar 1 top is provided with circular arc end socket, and circular arc end socket centre position is provided with opening, circular arc end socket
Circumferential position arrange multiple hangers 6, mortar jar 1 bottom be provided with can pull hermatic door.Rotary tank hangs side and installs conveying dress
Put, conveyer device includes support 8, multiple positioning skewbacks 15 are installed on support 8 top.Water tank 9, support 8 top are installed in support 8 bottom
Delivery chute 10 is installed, the top of delivery chute 10 is provided with vibrator 11.Blender 14 is installed in support 8 side.Water tank 9 has into water
Mouth and outlet, water inlet connects exterior line by water inlet pipe 13, and outlet passes through pipeline connection blender 14, in water tank 9
Water pump is installed in portion.
Remaining setting is same as Example 1.
Embodiment 4
Referring to the drawings 4：Mortar jar 1 can also be arranged in pairs or groups portable agitating device, the interior for narrow space or floor,
Transhipment and the stirring of dry-mixed mortar can be facilitated.Specifically, in supporting leg 7 bottom of mortar jar 1, portable agitating device is installed,
Portable agitating device includes agitator tank 16, and agitator tank 16 is internal to install stirring wing, and agitator tank 16 passes through supporting leg 17 and supports fixation,
Supporting leg 17 bottom is provided with wheel 18, and support plate 19 is installed in supporting leg 17 centre position, support plate 19 is installed stirring wing can be driven to rotate
Motor 20, motor 20 output shaft passes through belt pulley or sprocket wheel chain belt and moves stirring wing to rotate, stirred
Mix dry-mixed mortar.Agitator tank 16 width is less than 60 centimetres, of length no more than 1.5 meters, is highly less than 0.9 meter, can facilitate
Turnover is indoor, and is placed on mortar jar bottom, and the wheel 18 at rear portion adopts common trundle, and anterior wheel 18 adopts universal
Wheel, is moved easily, turns to.Portable agitating device is simple to operate, can be easily from outdoor past indoor moving, mortar jar 1
Can directly hang in inside floor, both are applied in combination, be more suitable for small-sized building site and use.
Operation principle and use process：When this material transportation turnover device uses, due to small volume, lightweight, Ke Yitong
Cross general wagon to be transported.By the mortar jar 1 filling dry-mixed mortar hang with rotary tank together with transported by lorry, transport
To construction site, unload rotary tank first and hang, be placed at operation vacant lot, then hung using rotary tank and mortar jar 1 is carried out
Handling is loaded and unloaded.During handling, hoist cable 5 catches on the hanger 6 of mortar jar 1, can rise or decline.The output of steer motor 32 simultaneously
Axle passes through to turn to chain 33 driving vertical beam 3 with steering spindle 31 as axis rotation, it is possible to achieve turn to.And, hoist cable 5 can be along arm
4 horizontal rectilinear motions, thus realizing the top to bottom, left and right, front and rear motion of mortar jar 1, can light optional position in placing range.
After mortar jar 1 puts down, it is supported by supporting leg 7.Dolly or blender can be placed on supporting leg 7 bottom, pass through
Pull hermatic door, realizing opening and closing, thus releasing dry-mixed mortar, carrying out next step operation.
Rotary tank hangs can also join automatic stirring conveyer device with mortar jar 1 and used.Now, mortar jar 1 bottom is no
Supporting leg 7 need to be equipped with.During use, hang side in rotary tank and automatic stirring conveyer device is installed, mortar jar 1 is hoisted to support 8
Upper space, and in the presence of positioning skewback 15, mortar jar 1 is smoothly seated to support 8 top.Vibration on Start-up device 11, makes to put
Put the mortar jar 1 on support 8 top to vibrate, so that the material within mortar jar 1 fully enters delivery chute 10, prevent from sending out
Biological material remaining phenomenon.Water tank 9 provides water in delivery chute 10 simultaneously, and stirring wing is rotated by motor 12, realizes dry
Mortar stirs.Mortar material after stirring flows out from delivery chute 10 and is used, it is possible to achieve dry-mixed mortar automatic stirring,
Automaticity is higher.
Rotary tank hangs can also join conveyer device with mortar jar 1 and single blender 14 is used.Mortar jar 1 bottom
Supporting leg 7 need not be equipped with.During use, rotary tank hangs side and installs conveyer device, dry-mixed mortar course of conveying and said process one
Cause, difference is, after dry-mixed mortar enters delivery chute 10, then be stirred from delivery chute 10 entrance blender 14, water during stirring
How many casees can provide the suitable water yield for blender 14 according to material, and after preventing mortar stirring, viscosity is excessively sticky or dilute
Thin it is easier to control mortar quality.
This material transportation turnover device is it can also be used to the transport of cement or industrial chemicals is had enough to meet the need.
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention is made with other forms, appoints
What those skilled in the art possibly also with the disclosure above technology contents changed or be modified as equivalent variations etc.
Effect embodiment.But every without departing from technical solution of the present invention content, according to the present invention technical spirit to above example institute
Any simple modification, equivalent variations and the remodeling made, still falls within the protection domain of technical solution of the present invention.
Claims (8)
1. a kind of material transportation turnover device it is characterised in that：Hang and mortar jar including the rotary tank being applied in combination（1）, described
Rotary tank bull ladle include chassis（2）, vertical beam（3）And arm（4）, chassis（2）It is the base built by laying bricks or stones using armored concrete,
Chassis（2）Vertical beam is installed in central upper portion position（3）, vertical beam（3）Horizontal arm is installed at top（4）, arm（4）Upper installation is permissible
Lifting mortar jar（1）Hoist cable（5）；
Described mortar jar（1）Using cylindrical shape or square tank, mortar jar（1）Upper middle position is provided with opening, top circumference
Position arranges multiple hangers（6）, mortar jar（1）Bottom be provided with can pull hermatic door；
Described mortar jar（1）It is less than 1.5 meters for diameter, be highly less than 2 meters of cylindrical shape, or described mortar jar（1）For
The length of side is less than 1.5 meters, is highly less than 2 meters of square tank, mortar jar（1）Bottom is movably installed with supporting leg by fixing pipe（7）；
Described supporting leg（7）Portable agitating device is installed in bottom, and portable agitating device includes agitator tank（16）, agitator tank（16）
Internal installation stirring wing, agitator tank（16）By supporting leg（17）Support and fix, supporting leg（17）Bottom is provided with wheel（18）, supporting leg
（17）Support plate is installed in centre position（19）, support plate（19）Upper installation can drive the motor that stirring wing rotates（20）.
2. a kind of material transportation turnover device according to claim 1 it is characterised in that：Described vertical beam（3）In under
Transfer is installed in portion, and transfer includes steering spindle（31）, steer motor（32）With steering chain（33）, steering spindle（31）Pass through
Steering bearing and vertical beam（3）Coaxially connected together, steer motor（32）It is arranged on vertical beam（3）Side, steer motor（32）'s
Output shaft passes through to turn to chain（33）Connect vertical beam（3）, and drive vertical beam（3）With steering spindle（31）For axis rotation.
3. a kind of material transportation turnover device according to claim 1 it is characterised in that：Described rotary tank hangs side peace
Dress automatic stirring conveyer device, automatic stirring conveyer device includes support（8）, support（8）Water tank is installed in bottom（9）, support（8）
Delivery chute is installed on top（10）, delivery chute（10）Inside it is provided with stirring wing, stirring wing is by being arranged on support（8）The motor of side
（12）Drive.
4. a kind of material transportation turnover device according to claim 3 it is characterised in that：Described water tank（9）Have into
The mouth of a river and outlet, water inlet passes through water inlet pipe（13）Connection exterior line, outlet passes through pipeline connection delivery chute（10）, water
Case（9）Internal installation water pump.
5. a kind of material transportation turnover device according to claim 1 it is characterised in that：Described rotary tank hangs side peace
Dress conveyer device, conveyer device includes support（8）, support（8）Water tank is installed in bottom（9）, support（8）Delivery chute is installed on top
（10）, support（8）Blender is installed in side（14）.
6. a kind of material transportation turnover device according to claim 5 it is characterised in that：Described water tank（9）Have into
The mouth of a river and outlet, water inlet passes through water inlet pipe（13）Connection exterior line, outlet passes through pipeline connection blender（14）, water
Case（9）Internal installation water pump.
7. a kind of material transportation turnover device according to any one of claim 3-5 it is characterised in that：Described delivery chute
（10）Top vibrator is installed（11）.
8. a kind of material transportation turnover device according to claim 3 or 5 it is characterised in that：Described support（8）Top
Multiple positioning skewbacks are installed（15）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410343910.XA CN104129721B (en) | 2014-07-19 | 2014-07-19 | Material transport revolution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410343910.XA CN104129721B (en) | 2014-07-19 | 2014-07-19 | Material transport revolution device |
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| Publication Number | Publication Date |
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| CN104129721A CN104129721A (en) | 2014-11-05 |
| CN104129721B true CN104129721B (en) | 2017-02-15 |
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| CN201410343910.XA Active CN104129721B (en) | 2014-07-19 | 2014-07-19 | Material transport revolution device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111661766B (en) * | 2020-06-15 | 2022-03-11 | 孙永刚 | Bridge construction is with supplementary hoist device |
| CN111704030B (en) * | 2020-06-23 | 2022-02-08 | 马鞍山友基贸易有限公司 | Chemical industry jar body handling erection equipment |
| CN112521953B (en) * | 2020-11-26 | 2022-07-15 | 中国一冶集团有限公司 | Coke oven ascending pipe building device and ascending pipe building method |
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| CN203959690U (en) * | 2014-07-19 | 2014-11-26 | 谭云龙 | A kind of material transportation turnover device |
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| CN2641000Y (en) * | 2003-06-25 | 2004-09-15 | 江国和 | Lift sub gear of excavator |
| CN201971567U (en) * | 2010-12-31 | 2011-09-14 | 牛志强 | Small-sized indoor sand hoister |
| CN202744239U (en) * | 2012-08-23 | 2013-02-20 | 江苏正兴建设机械有限公司 | Transmission device of tower crane turning system |
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