CN107486823A - A kind of stable bracket of gravity distribution guiding - Google Patents
A kind of stable bracket of gravity distribution guiding Download PDFInfo
- Publication number
- CN107486823A CN107486823A CN201710540756.9A CN201710540756A CN107486823A CN 107486823 A CN107486823 A CN 107486823A CN 201710540756 A CN201710540756 A CN 201710540756A CN 107486823 A CN107486823 A CN 107486823A
- Authority
- CN
- China
- Prior art keywords
- push rod
- rod pallet
- bracket
- gravity
- stress
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/06—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of trestle type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G29/00—Supports, holders, or containers for household use, not provided for in groups A47G1/00-A47G27/00 or A47G33/00
- A47G29/087—Devices for fastening household utensils, or the like, to tables, walls, or the like
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/52—Weighing apparatus combined with other objects, e.g. furniture
Abstract
A kind of stable bracket of gravity distribution guiding, a stable bracket of mechanical structure mechanics for having closure six-sided structure is collectively constituted by three main tripod body, push rod pallet and three pin poles parts.The stress push rod of push rod pallet passes perpendicularly through flange guide thimble centre bore, pass through one piece of distribution cover for seat placed steel ball therein and arrive at three pin pole centers, loading gravity is directly transmitted and is assigned to main tripod body, arrives at ground, you can loading steadily of centre of gravity support thing is greatly reduced.Flange guide thimble is designed to cantilevered, 2 points of OD on flange guide thimble is formed as the outstanding arm lever for having certain length distance, can correspond to the torque for producing resistance extrapolability.The problem of present invention can overcome existing bracket " top-heavy " center of gravity high；The problem of power that upset caused by external force collision is toppled over is broken up, overcome；Gravity is converted into the response power source that potentially anti-upset is toppled over, realizes stable support thing.
Description
Technical field
The present invention relates to a kind of daily necessities, specifically a kind of stable bracket of gravity distribution guiding.It is mainly used in carrying
Flower landscape, ornamental fish potted landscape, important instrument, breakaway glass vessel or other brackets for showing valuables.Also can conduct
The bracket of industrial circle.
Background technology
Common bracket has carrying flower landscape, important instrument, breakaway glass vessel or other displaying articles in life
Bracket, carry the object of displaying by centrifugal force effect and the collision passage of other people's external force, easily topple over, it is safe surely
Qualitative energy is low.The existing method for solving bracket carrying is that carrier body is put into four square box wooden or made of iron
On.Or it is a bracket for belonging to rigid body in nature that special hardware, which is fabricated to one, such bracket not only unsightly, and
And the height of C.G. of bracket and its carrier entirety is higher, is commonly called as " top-heavy ".Safety and stability performance index request is not reached.
Because bracket entirety center of gravity and the center of gravity almost all of carrier are divided equally in the same level height of the approximation on bracket desk tray, and
And bracket overall structure is mainly rigid structure, and the mechanical strength performance indications of selected metal material used in itself are bad,
It is most of also no to pass through any heat treatment, surface treatment and flow harden processing, resiliency flexible does not occur after bracket load-bearing
Pressure deformation, i.e., existing bracket are an articles constant with combination property in shape, and stability is general.
The content of the invention
In order to solve the above mentioned problem of existing bracket, the present invention provides a kind of stable bracket of gravity distribution guiding.If
Count into strong and unyielding bracket that is soft and graceful, erectting stabilization and brief and practical.Except focusing on considering material in terms of making material selection
Mechanical property is showed, and the force structure arrangement of bearing distribution and its framework is fully taken into account in Mechanics of Machinery.
The obvious technical problem that the present invention solves has：First, the problem of overcoming existing bracket " top-heavy " center of gravity high；
2nd, the problem of power that upset caused by external force collision is toppled over being broken up, overcome；3rd, gravity is converted into potential anti-turnover
Response power source.
The technical scheme is that：A kind of stable bracket of gravity distribution guiding, including main tripod body, push rod pallet
With three pin poles, concrete structure and annexation are：The main tripod body is with three pin poles through fastening screw and setting-up piece
Fastened with pad to be formed one have closure six-sided structure mechanical structure mechanics stably hold in the palm thing support, push rod pallet is by stress push rod
It is welded into a whole with pallet, the stress push rod of push rod pallet passes perpendicularly through flange guide thimble centre bore and arrives at three pin pole centers
Distribution cover for seat, be provided with adjustable hexagon socket head cap screw in the distribution cover for seat bottom at three pin pole centers, can adjust push rod support
The height of disk.
Put between the hexagon socket head cap screw top end face of the distribution cover for seat at the push rod pallet end bottom and three pin pole centers
Spherical steel ball is equipped with, forms high kinematic pair.
Between on the hexagon socket head cap screw top end face of the distribution cover for seat at the push rod pallet end bottom and three pin pole centers
1 piece or 2 pieces of steel balls can be laid, the discrepancy in elevation of push rod pallet is adjusted with supplement.
The flange guide thimble is designed to cantilevered, makes 2 points of OD on flange guide thimble formed with certain length distance
Outstanding arm lever, under external force P promotions, fulcrum O stress is PO, can now produce MOD=PO× OD correspondingly resists the power of extrapolability
Square, wherein, O points are the close contact point of push rod pallet and flange guide thimble, and A points are the welded joints of push rod pallet, even if
It is the suspended state that A points are still non-contact with the location status of flange guide thimble in load-carrying or " light " contacts.
Assembling screws in three height adjustable flat head bolts on the port of the flange guide thimble, and the flat head bolt is referred to as
For the levitated equilibrium screw of push rod pallet, during non-load capacity article, three hang flat bolts and are in non-contact shape with push rod pallet
State, during load capacity article, wherein at least there are 2 to hang flat bolts and contacted with push rod pallet, plus push rod pallet with distributing cover for seat
Contact point B points, then push rod pallet, which amounts to, individual load-carrying support contact point, and 3 load-carryings support contact points form a planes, push up
Lever bracket disk reaches load-carrying balance, adjusts three positions for hanging flat bolt respectively, can the micro balance position for adjusting push rod pallet in part
Put and height.
The mathematical modeling simple formula of the mechanics principle quantum chemical method of the stable bracket of gravity distribution guiding is：
P × H+W × 1/3H+F × (1/4H)=0
In formula, P is the extrapolability for toppling over bracket, and H is bracket nominal altitude, and W is loading capacity, and F is stress pole
Stress；
The equilibrium equation of coplanar arbitrary force system：
∑ F=0；∑ M (F)=0
Stress F=(1/3W)/cos α of stress pole,
In formula, F is the stress of stress pole, and W is loading capacity.
The present invention's has the prominent advantages that：
1st, the problem of can effectively overcoming existing bracket " top-heavy " center of gravity high, improve to resist and topple over ability.
2nd, upset caused by the external force of collision loading can be toppled over torque and effectively decomposes neutralizing, form resistance forces.
The 3rd, gravity can be converted into the response power source that potential anti-upset is toppled over.
Brief description of the drawings
Fig. 1 is the three dimensional structure diagram of the stable bracket of gravity distribution guiding of the present invention.
Fig. 2 is the push rod pallet 2 of the stable bracket of gravity distribution guiding of the present invention and the structure of flange guide thimble 3
Schematic diagram.
Fig. 3 is the spherical steel ball 5 of the stable bracket of gravity distribution guiding of the present invention, distributes cover for seat 6, discrepancy in elevation regulation
The mechanical structure parts installation diagram of bolt 7.
Fig. 4 is the body force credit distribution structure schematic diagram of the stable bracket of gravity distribution guiding of the present invention.
Fig. 5 is the push rod pallet 2 of the stable bracket of gravity distribution guiding of the present invention and the mechanics of flange guide thimble 3
Distribution structure schematic diagram.
Fig. 6 is the mechanics distribution structure schematic diagram of push rod pallet 2 of the stable bracket of gravity distribution guiding of the present invention.
Fig. 7 is three pin poles and the mechanics distribution of distribution cover for seat 6 of the stable bracket of gravity distribution guiding of the present invention
Structural representation.
Embodiment
Technical scheme is described further below by way of drawings and examples.
The stable bracket of gravity distribution guiding of the present invention, including main tripod body, push rod pallet and three pin poles,
Concrete structure and annexation are：The main tripod body passes through fastening screw 11 and setting-up piece 10 and pad with three pin poles
12 fastenings form a mechanical structure mechanics for having closure six-sided structure and stably hold in the palm thing support, push rod pallet 2 by pallet 2-1 and
Stress push rod 2-2 is welded into a whole, and the stress push rod 2-2 of push rod pallet 2 passes perpendicularly through the centre bore of flange guide thimble 3 and arrived at
The distribution cover for seat 6 at three pin pole centers, it is adjustable to be provided with hexagon socket head cap screw 7 in the bottom of distribution cover for seat 6 at three pin pole centers
Structure, in the stress push rod 2-2 ends bottom of push rod pallet 2 and the hexagon socket head cap screw 7 of the distribution cover for seat 6 at three pin pole centers
The spherical steel ball 5 of one piece of suitable dimension is set between top end face, forms high kinematic pair, flange guide thimble 3 is designed to cantilevered, made
Outstanding arm lever ODs of 2 points of the OD formed with certain length distance on flange guide thimble 3.
Specifically preparation method step is：
As shown in Figure 1 to Figure 3, the stable bracket of gravity distribution guiding of the present invention, including push rod pallet 2, three pin
Frame body and three pin poles, push rod pallet 2 are welded into a whole by pallet 2-1 and stress push rod 2-2, and main tripod body is by method
Blue guide thimble 3 is connected with profile wire rod 1 through flange and port position spot-welded forms.6 profile wire rods of spot welding altogether
1.Every 2 profile wire rods 1 are a pair, totally three pairs, form main tripod body.The structure design makes main tripod body be grounded foot
As " the spacing positioning of ultra-thin 3-freedom degree " structure.The purpose is to increase the overstable structure of the reliable plane of main tripod body foot.
Assembling screws in three flat head bolts 9 on the horizontal termination of flange guide thimble 3, and three flat head bolts 9 are referred to as " push rod pallet by function
Levitated equilibrium screw " or abbreviation " outstanding plain screw ".Outstanding plain screw can both play the horizontality of check and correction push rod pallet 2, again may be used
To reach the purpose of " micro- power " support balance bracket center of gravity, ensure the position relationship right and wrong of A points and flange guide thimble 3 during load-carrying
Contact or " suspended state " gently contacted.Three pin poles by three pin pole centers distribution cover for seat 6, regulating bolt 7, three pin branch
Bar steel wire bar 8 is (1, totally 3 between per symmetrical hexagonal angle.) and the secondary composition of T-shaped hingedly connected.T-shaped hingedly connected pair is by fixing
Pad 10, fastening screw 11 and pad 12 form.T-shaped hingedly connected pair, or referred to as " T-shaped pair ".It is T-shaped it is secondary by with setting-up piece 10
Welding fastening and three integral pin pole steel wire bars 8 stretch out distal point solid welding in pole and determined, then by with pad 12 and with three
The combination connection fastening of the steel wire bar 1 (2 one group totally three pairs of steel wire bars 1) of foot stool body, passes through the connection of fastening bolt 11 and clamps
Formed.Totally three pairs.Using square compress gasket 12, and with setting-up piece 10 and fastening screw 11, by main tripod body
Paired steel wire bar 1 on adjust horizontal level after, screw fastening bolt 11 and fix.Repeatable installing/dismounting.
Operation principle and process：
The main tripod body after fastening screw 11 and setting-up piece 10 clamp with pad 12, forms one with three pin poles
The individual mechanical structure mechanics for having closure six-sided structure stably holds in the palm thing support, carries stress tops of the weight gravity W through push rod pallet 2
Bar 2-2 directly passes perpendicularly through the distribution cover for seat 6 that the centre bore of flange guide thimble 3 arrives at three pin pole centers, is pleaded and added in B points
Carry, and be further continued for being delivered to main tripod body by T-shaped auxiliary connection by three pin poles and be delivered to eventually up to ground.Form the closure six
The bracket of the mechanical structure of side structure can produce the elastic deformation of certain three-dimensional.That is accumulation of energy.When external force P horizontal directions
Or during random direction three footrest rack of promotion, continue to be delivered in the mechanical structure of closure six-sided structure by push rod pallet 2
In.
The mechanical analysis of the described stable bracket of gravity distribution guiding：
1st, gravity distributes：When the external force P from any direction makes the poised state occurence tendency of bracket topple over again
During change, then can first it occur one " inverse process ", i.e., above the elastic deformation of elastic deformation accumulation of energy process is recovered, i.e. accumulation of energy is released
Put.Recover deformation displacement, this acting can momentary partial offset the extrapolability P completion for toppling over acting.In the case of normally,
Ask gravity W caused by thing own wt to pass through the centre bore of flange guide thimble 3 by the stress push rod 2-2 of push rod pallet 2, draw
The distribution cover for seat 6 that gravity arrives at three pin pole centers is led, distribution is further continued for and is directed to three pin poles and main tripod body 1 and leads to
Earthward.Support thing center of gravity is greatly reduced.
2nd, the torque for toppling over extrapolability is resisted：Flange guide thimble 3 is designed to " cantilever " formula, makes the OD on flange guide thimble 3
2 points of outstanding arm lever OD for being formed as having certain length distance.Under external force P promotions, fulcrum O stress is PO, can now produce
MOD=PO× OD correspondingly resists the torque of extrapolability.Because O points are close contact point, the A of push rod pallet 2 and flange guide thimble 3
Point is the secure weld binding site of push rod pallet, even so the location status of A points and flange guide thimble 3 is still in load-carrying
It is the suspended state of non-contact or " light " contact.To ensure B points as gravity impetus.Filled on the port of flange guide thimble 3
With three height adjustable flat head bolts 9 are screwed in, the levitated equilibrium screw of push rod pallet 2 or abbreviation " outstanding plain screw " are called,
When not carrying weight, 3 hang flat bolt 9 and are in contactless state with push rod pallet 2.When carrying weight, at least wherein 2 outstanding
Flat bolt 9 can contact with push rod pallet 2, plus push rod pallet 2 with distribution cover for seat 6 contact point B points, then push rod pallet 2 amount to
There are 3 load-carrying support contact points, three points form a plane.Push rod pallet 2 reaches load-carrying balance.
A kind of stable bracket of gravity distribution guiding, its service behaviour are generalized into two emphasis on force analysis：First,
Gravity W is directed to B points from A points；2nd, external force P is dissolved to O points and B points from A points.Thus the effect showed is：1, drop
The low center of gravity W positions of load-carrying article；2, power portion P is toppled over into extrapolation be effectively converted into and anti-topple over torque MOD=PO× OD,
And it is partially converted into the horizontal horizontal thrust P in B pointsB。
Below by way of a bracket stress mathematical analysis calculated examples, the anti-ability of toppling over of bracket is further illustrated.
If the extrapolability for toppling over bracket is P, loading capacity W=30kg, bracket nominal altitude H=1m, center of gravity is horizontal
Subpoint, i.e. B point floor projection point, to one of the pick-up point of main tripod body between height H 1/3rd (1/3H),
The T-bolt fastening twisting point of main tripod body and three pin poles to the height H for landing end points of main tripod body four/
The angle α of the pole of one of one (1/4H), the push rod of push rod pallet 2 and three pin poles, takes α=70 °；Then column is such as
Under：
Commonly the stress mechanical balance formula with the bracket of appearance and size is：
P × H-W × (1/3H)=0,
P=(W × (1/3H))/H=(30 × 1/31)/1=10kg.
And the stress (stretching) of one of three pin poles stress pole 8 is F=(1/3W)/cos α, then,
F=(1/3W)/cos70 °=(1/3 × 30kg)/0.342=10/0.342=29.239kg；
Bringing moment-equilibrium equation into is：P × H+W × 1/3H+F × (1/4H)=0
P=- (W × 1/3H+F × 1/4H)/H=- (30 × 1/3 × 1+29.239 × 3/4)
=- (10+21.929)=- 31.929 ≈ -32kg.
Pictute is：Need the strength than former common 3 times of bracket raising, it is also necessary to apply and maintain a period of time to do work
Promote, be only possible to topple over and overthrow bracket.
7 adjustable structure of hexagon socket head cap screw is provided with distribution cover for seat 6 bottom has the work(of the adjustable height of push rod pallet 2
Energy；Pass through the hexagon socket head cap screw in the stress push rod 2-2 ends bottom of push rod pallet 2 and the distribution cover for seat 6 at three pin pole centers
The spherical steel ball 5 of one piece of suitable dimension is set between top end face, high kinematic pair is formed, can so make the gravity perpendicular to ground
The W and external force P from any direction, is appropriately distributed at contact point B, evades or reduce the frictional force that need not occur
Composition.
The number of spherical steel ball 5 is inserted by increasing or decreasing, the pitch of push rod pallet 2 is also can adjust, with the straight of steel ball
Footpath size is pitch height.The three outstanding plain screws 9 screwed on flange guide thimble 3, also can portion by rotating adjustment position
Divide equilbrium position and the height of micro adjustment push rod pallet 2.To ensure that gravity W distributes downwards efficiently accomplishing for action process.
Claims (6)
1. a kind of stable bracket of gravity distribution guiding, including main tripod body, push rod pallet and three pin poles, its feature exist
In concrete structure and annexation are：The main tripod body is tight through fastening screw and setting-up piece and pad with three pin poles
Solid stably holds in the palm thing support into a mechanical structure mechanics for having closure six-sided structure, and push rod pallet is welded by stress push rod and pallet
Connect integral, the stress push rod of push rod pallet passes perpendicularly through the distribution seat that flange guide thimble centre bore arrives at three pin pole centers
Set, adjustable hexagon socket head cap screw is provided with the distribution cover for seat bottom at three pin pole centers, can adjust the height of push rod pallet.
2. the stable bracket of gravity distribution guiding according to claim 1, it is characterised in that the push rod pallet end bottom
Spherical steel ball is placed between the hexagon socket head cap screw top end face of the distribution cover for seat at portion and three pin pole centers, forms high kinematic pair.
3. the stable bracket of gravity distribution guiding according to claim 2, it is characterised in that the push rod pallet end bottom
1 piece or 2 pieces of steel balls can be laid between on the hexagon socket head cap screw top end face of the distribution cover for seat at portion and three pin pole centers, are adjusted with supplementing
Save the discrepancy in elevation of push rod pallet.
4. the stable bracket of gravity distribution guiding according to claim 1, it is characterised in that the flange guide thimble design
Into cantilevered, make 2 points of outstanding arm levers formed with certain length distance of OD on flange guide thimble, under external force P promotions,
Fulcrum O stress is PO, can now produce MOD=PO× OD correspondingly resists the torque of extrapolability, wherein, O points are push rod pallet and method
The close contact point of blue guide thimble, A points are the welded joints of push rod pallet, even A points and flange guide thimble in load-carrying
Location status be still non-contact or " light " contact suspended state.
5. the stable bracket of gravity distribution guiding according to claim 1, it is characterised in that the end of the flange guide thimble
Assembling screws in three height adjustable flat head bolts on mouth, and the flat head bolt is referred to as the levitated equilibrium screw of push rod pallet,
During non-load capacity article, three hang flat bolts and push rod pallet and are in contactless state, during load capacity article, wherein at least
Have 2 hang flat bolts contacted with push rod pallet, plus push rod pallet with distribute cover for seat contact point B points, then push rod pallet amount to
There is an individual load-carrying support contact point, 3 support contact points form a planes during load-carrying, and push rod pallet reaches load-carrying balance, respectively
Three positions for hanging flat bolt of adjustment, can the micro equilbrium position for adjusting push rod pallet in part and height.
6. the stable bracket of gravity distribution guiding according to claim 1, it is characterised in that the stable support of gravity distribution guiding
The mathematical modeling simple formula of the mechanics principle quantum chemical method of rack is：
P × H+W × 1/3H+F × (1/4H)=0
In formula, P is the extrapolability for toppling over bracket, and H is bracket nominal altitude, and W is loading capacity, F be stress pole by
Power；
The equilibrium equation of coplanar arbitrary force system：
∑ F=0；∑ M (F)=0
Stress F=(1/3W)/cos α of stress pole,
In formula, F is the stress of stress pole, and W is loading capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540756.9A CN107486823B (en) | 2017-07-05 | 2017-07-05 | Gravity distribution guide stable bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540756.9A CN107486823B (en) | 2017-07-05 | 2017-07-05 | Gravity distribution guide stable bracket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107486823A true CN107486823A (en) | 2017-12-19 |
| CN107486823B CN107486823B (en) | 2021-01-05 |
Family
ID=60644587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710540756.9A Expired - Fee Related CN107486823B (en) | 2017-07-05 | 2017-07-05 | Gravity distribution guide stable bracket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107486823B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409047A (en) * | 2020-01-21 | 2020-07-14 | 国网浙江省电力有限公司湖州供电公司 | Portable live working platform |
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| FR801541A (en) * | 1935-02-04 | 1936-08-06 | Kodak Pathe | Height-adjustable support foot |
| FR2492047A1 (en) * | 1980-10-09 | 1982-04-16 | Hamon Claude | Support frame for electric hedge cutter - has demountable wheeled base and adjustable height tool holder mounted Vertically on it |
| CN203671183U (en) * | 2014-01-26 | 2014-06-25 | 黑龙江工业学院 | Detecting instrument A-frame |
| CN203907163U (en) * | 2014-01-10 | 2014-10-29 | 孙希正 | All-terrain tripod |
| CN104421592A (en) * | 2013-08-20 | 2015-03-18 | 天津市津宝乐器有限公司 | Marching multi-tone drum stand |
| CN104565725A (en) * | 2015-01-13 | 2015-04-29 | 佛山市开信光电有限公司 | Tripod with rapid and stepless lifting and locking functions |
| CN205383405U (en) * | 2016-01-28 | 2016-07-13 | 浙江水利水电学院 | Tripod |
-
2017
- 2017-07-05 CN CN201710540756.9A patent/CN107486823B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR801541A (en) * | 1935-02-04 | 1936-08-06 | Kodak Pathe | Height-adjustable support foot |
| FR2492047A1 (en) * | 1980-10-09 | 1982-04-16 | Hamon Claude | Support frame for electric hedge cutter - has demountable wheeled base and adjustable height tool holder mounted Vertically on it |
| CN104421592A (en) * | 2013-08-20 | 2015-03-18 | 天津市津宝乐器有限公司 | Marching multi-tone drum stand |
| CN203907163U (en) * | 2014-01-10 | 2014-10-29 | 孙希正 | All-terrain tripod |
| CN203671183U (en) * | 2014-01-26 | 2014-06-25 | 黑龙江工业学院 | Detecting instrument A-frame |
| CN104565725A (en) * | 2015-01-13 | 2015-04-29 | 佛山市开信光电有限公司 | Tripod with rapid and stepless lifting and locking functions |
| CN205383405U (en) * | 2016-01-28 | 2016-07-13 | 浙江水利水电学院 | Tripod |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409047A (en) * | 2020-01-21 | 2020-07-14 | 国网浙江省电力有限公司湖州供电公司 | Portable live working platform |
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| Publication number | Publication date |
|---|---|
| CN107486823B (en) | 2021-01-05 |
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