CN2091852U - Lifting clamp - Google Patents
Lifting clamp Download PDFInfo
- Publication number
- CN2091852U CN2091852U CN 91214507 CN91214507U CN2091852U CN 2091852 U CN2091852 U CN 2091852U CN 91214507 CN91214507 CN 91214507 CN 91214507 U CN91214507 U CN 91214507U CN 2091852 U CN2091852 U CN 2091852U
- Authority
- CN
- China
- Prior art keywords
- jaw
- force
- lifting
- left jaw
- hoisting force
- 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.)
- Withdrawn
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- 230000003068 static effect Effects 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000011449 brick Substances 0.000 description 22
- 239000012634 fragment Substances 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
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- Load-Engaging Elements For Cranes (AREA)
Abstract
The utility model discloses a lifting clamp, comprising a left jaw and a right jaw hinged together through pins. The left jaw is a movable jaw. The right jaw is an opposite motionless member. The left jaw is provided with the point of force of a lifting force. A section of eccentric distance is provided between the point of force of the left jaw and the rotating vice. The utility model has the advantages of simple and reasonable structure, convenient use and labour saving. If only the lifting force (lift force) is equal to the weight of the lifted (hung) object, the friction force of sufficient large can generate on the jaw points of the left jaw and the right jaw. Thereby, the object can be lifted.
Description
The utility model relates to a kind of hoist mechanism, particularly relates to a kind of lifting fixing device that directly utilizes hoisting force to produce the required friction force of lifting.
An existing class fixing device is the brick folding machine, it is simple in structure to constitute (see figure 1) by left jaw 1 with the right jaw 2 of left jaw hinge joint, its folder fortune fragment of brick need have two power to realize, the one, the grip force P of armrest clamps fragment of brick, could guarantee to clamp the unlikely landing of fragment of brick when having only the friction force that produces when grip force to equal the weight of brick, in practice, be difficult to the coupling that the people is the science of accomplishing between the grip force of hand and the required gripping power, often use excessive grip force in order to ensure the unlikely landing of fragment of brick, the 2nd, another hoisting force P also need be arranged, and have only when hoisting force P equals fragment of brick weight and just can mention fragment of brick.As seen utilize this kind brick folding machine folder fortune fragment of brick not laborsaving, increased labour intensity widely, the hand fatiguability is ached, influence labor efficiency; On the other hand, in labout process, existing brick folding machine almost can not transmit mutually, also influences the raising of labor efficiency to a certain extent.
Existing hoisting device generally is to come hoisting heavy by means of auxiliary facilities such as the lug on the object, flange, suspension ring, suspension hooks.This device is set up morely, and lifting also need overcome the deadweight that those " burden " set up during object.
Given this, the purpose of this utility model provides a kind of easy to use, labour-saving and is directly to utilize hoisting force to produce the lifting fixing device of the required friction force of lifting.
The purpose of this utility model is achieved in that it has by left jaw and the basic system that constituted with the right jaw of left jaw pivotally attached, left side jaw is movable jaw, right jaw is relative static component when running condition, on left jaw, also be provided with the hoisting force acting point, and in this basic system that constitutes by left and right jaw, adopt eccentric structure---promptly remaining on the left jaw has an eccentric distance (referring to Fig. 2,3) between the revolute pair on the acting point and left jaw.During use, the object that is raised is stuck in a left side, between right jaw, when certain hoisting force acts on the acting point of left jaw, just produce drive torque on the eccentric distance section of left side jaw, this moment is ordered about left jaw and is done the anti-clockwise rotation around revolute pair, thus, pawl point on the jaw of a left side dwindles until contacting gradually with the distance that is raised between object, do when revolute pair is rotated at left jaw, right jaw is static relatively, it is (promptly left so just to cause a clamp to be raised object, right jaw plays clamping action simultaneously) situation, thereby grip objects produces friction force therefrom, friction force increases with the increase of hoisting force, when hoisting force equaled to be raised thing weight, friction force reached maxim (the not friction force of counter device deadweight and revolute pair), can realize that frictionally puies forward the purpose of (a hanging) object.
On the hoisting force acting point of above-mentioned left jaw, can connect one handle.
Another constructional feature of the utility model is exactly a hinged connecting rod on the acting point of above-mentioned left jaw, and at the affixed lifting of small end load spare, the connecting rod lower end is hinged with rocking bar, and the rocking bar lower end is hinged on again on the above-mentioned right jaw (referring to Fig. 3).During use, to be stuck between left jaw and the right jaw by the object of lifting, and to make rocking bar and connecting rod constitute an angle be that rocking bar and connecting rod are out-of-line, at this moment, on lifting load spare, apply hoisting force (lifting force), produce rotating counterclockwise with lifting load spare bonded assembly connecting rod around its barycenter, connecting rod pair produces propulsive effort with its pivotally attached left side jaw acting point, make left jaw on the eccentric distance section, produce drive torque, a left side jaw under the drive torque effect around a left side, the revolute pair that right jaw is hinged is made anti-clockwise and is rotated, make left jaw and progressively dwindled until contacting by the distance between the lifting object, thereby clamp by the lifting object, and produce friction force thus; When connecting rod rotates counterclockwise, rocking bar clockwise rotates around the hinged center that rocking bar links to each other with right jaw, when rocking bar clockwise rotates when being a straight line (vertical position) with connecting rod, rocking bar stops operating with regard to no torque, be in self-locking state, whole device was in self-locking state and (both made and removed hoisting force this moment, whole device still can grip objects), when above-mentioned left jaw produces friction force and rocking bar rotation, static relatively right jaw is subjected to through connecting rod, the hoisting force component effect that the rocking bar transmission comes, the direction of this component and this power are to a left side, constitute the arm of force between right jaw pivotally attached transmission, thereby produce a moment, this moment can make right jaw produce certain friction force on its pawl point; When hoisting force equaled the weight of object, it is maximum that the friction force on the pawl point of left and right jaw reaches, and can carry (hanging) and play object.
The utlity model has following advantage:
1, laborsaving.Brick folding machine of the prior art needs the people to apply the power that is twice in fragment of brick weight at least could realize folder fortune fragment of brick; Hoisting device in existing, more owing to setting up, also need overcome the action of gravity that these are set up, so not laborsaving.Use the utility model, as long as hoisting force equals to be raised the weight (the not friction in counter device deadweight and the revolute pair) of object, can on the pawl point of left and right jaw, produce maximum friction force respectively, its size is equal to or greater than 1/2nd of weight of object, required friction force when being enough to realize the lifting object.As seen the hoisting force weight that equals object just can raise up object, and this is just much laborsaving compared with prior art.
2, easy to use.Use the utility model folder fortune fragment of brick, can realize the replacement between transmission mutually and left hand and right hand, owing to cancelled grip force, hoisting force is only arranged again, thus easy to operate, having no the sense of landing, hand and brick face can not collided yet; Use the utility model hoisting heavy, need not to do long setup time, only need on body surface, to select two suitable clamping contact points to get final product.
3, Applicable scope is big.The object of the utility model lifting comprises each type objects and the ganoid object of complex contour, and existing brick folding machine just is not suitable for the smooth fire brick of clamping surface, and can only press from both sides 5 bricks of fortune, and the present invention can be pressed from both sides 4-6 piece brick.
4, the utility model is simple and reasonable for structure, saving in material.
Further specify the utility model structure below in conjunction with drawings and Examples.
Fig. 1 is existing brick folding machine structure diagram
Fig. 2 is the utility model one brick folding machine structural representation
Fig. 3 is the utility model interposed structure scheme drawing of resetting together.
The utility model (see figure 2) has left jaw 3 and right jaw 4, left and right jaw 3,4 usefulness pin O(or bolts) hinge together, left side jaw 3 ends are connected with handle 5, on the left jaw 3 in that to be positioned at handle 5 be removable pin to transmission O() between the eccentric distance 6 of one section level is arranged.
Embodiment 2
The utility model (see figure 3), have left jaw 7 and right jaw 8, left and right jaw 7,8 is by pin A(or bolt) hinge is together, left side jaw 7 is hinged on the connecting rod 9, connecting rod 9 upper ends are connected with suspension hook 10, and the upper end of connecting rod 9 lower ends and a rocking bar 11 is hinged, and rocking bar 11 lower ends are hinged on the right jaw 8, be provided with one section eccentric distance 12 between revolute pair A to B being positioned on the jaw 7 of a left side, the distance between revolute pair A, D is a bit larger tham the distance between D, C.Left and right jaw of the present utility model can be realized adjustable on level attitude.
Claims (4)
1, a kind of lifting fixing device, have left jaw and with the right jaw of left jaw pivotally attached, left side jaw can be with respect to the basic system of doing relative to static right jaw to rotate around revolute pair when running condition to it is characterized in that described left jaw and right jaw constituting one, described left jaw is provided with the hoisting force acting point, on the left jaw at the hoisting force acting point to there being one section energy under the hoisting force effect, to produce the eccentric distance of moment between the revolute pair.
2, promote fixing device according to claim 1, it is characterized in that on the hoisting force acting point of described left jaw, being connected with handle.
3, promote fixing device according to claim 1, it is characterized in that being hinged with connecting rod on the hoisting force acting point of described left jaw, small end is connected to and promotes load spare, and the hinge joint of connecting rod lower end has rocking bar, and rocking bar lower end and described right jaw are hinged.
4, as lifting fixing device as described in the claim 3, it is characterized in that described lifting load spare is a suspension hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91214507 CN2091852U (en) | 1991-05-15 | 1991-05-15 | Lifting clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91214507 CN2091852U (en) | 1991-05-15 | 1991-05-15 | Lifting clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2091852U true CN2091852U (en) | 1992-01-01 |
Family
ID=4922707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91214507 Withdrawn CN2091852U (en) | 1991-05-15 | 1991-05-15 | Lifting clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2091852U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439152C (en) * | 2003-05-15 | 2008-12-03 | 维斯塔斯风力系统有限公司 | Transport system for wind turbine components, vehicle for transport system, mobile system, method for building a transport or mobile system and use thereof |
| CN106044547A (en) * | 2016-05-13 | 2016-10-26 | 新兴重工湖北三六机械有限公司 | Overhead hoist capable of automatically stretching and retracting |
| CN107443278A (en) * | 2016-05-30 | 2017-12-08 | 中国科学院沈阳应用生态研究所 | A kind of multiple clamps easy to assemble with flush contact face object of fastening |
-
1991
- 1991-05-15 CN CN 91214507 patent/CN2091852U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439152C (en) * | 2003-05-15 | 2008-12-03 | 维斯塔斯风力系统有限公司 | Transport system for wind turbine components, vehicle for transport system, mobile system, method for building a transport or mobile system and use thereof |
| CN106044547A (en) * | 2016-05-13 | 2016-10-26 | 新兴重工湖北三六机械有限公司 | Overhead hoist capable of automatically stretching and retracting |
| CN106044547B (en) * | 2016-05-13 | 2017-11-17 | 新兴重工湖北三六一一机械有限公司 | A kind of handling apparatus of automatic telescopic |
| CN107443278A (en) * | 2016-05-30 | 2017-12-08 | 中国科学院沈阳应用生态研究所 | A kind of multiple clamps easy to assemble with flush contact face object of fastening |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |