CN2769238Y

CN2769238Y - Hoisting construction clamp

Info

Publication number: CN2769238Y
Application number: CN 200520033334
Authority: CN
Inventors: 乔秀坤
Original assignee: Furnace & Kiln Engineering Branch China No5 Metallurgical Construction Co
Current assignee: Furnace & Kiln Engineering Branch China No5 Metallurgical Construction Co
Priority date: 2005-03-01
Filing date: 2005-03-01
Publication date: 2006-04-05
Anticipated expiration: 2015-03-01

Abstract

The utility model relates to a hoisting construction clamp which at least comprises one clamp unit, wherein the clamp unit is provided with a pair of clamp arms connected with each other by a hinge shaft in the middle part; the operating end of each clamp arm is connected with a hoisting hanging beam through a hinging structure; the clamping ends of the clamp arm are provided with a pair of clamping claw heads with opposite clamping surfaces. Each clamping jaw head is respectively connected to the clamping end of the clamp arm by a horizontal and axial hinging structure; the clamping surface of each clamping jaw head is provided with a concave and convex coarse structure. The clamp has the functions of self-adaption to floating adjustment and slight embedding, and is especially suitable for the hoisting and/or assembling construction to electrolyzing tank carbon blocks which have large size and easy damage and have higher requirements that the carbon blocks can not be bound and levered in the electrolysis smelting industry. Sufficient hoisting clamping force is ensured, and at the same time, the surface of hoisted work piece is not damaged.

Description

The lifting construction anchor clamps

Technical field

The utility model relates to the anchor clamps that a kind of lifting construction is used, and grows up and the lifting construction anchor clamps of higher construction and/or installation requirement are arranged especially for the lifting shape, can be preferentially but be not limited only to electrolysis for production already in the lifting construction of electrolytic bath carbon piece.

Background technology

To large heavy workpiece or parts, particularly big and geomery is grown up, the lifting of easy damaged, the high workpiece of applicable viscosity requirement or parts to weight, be the constructing operation that regular meeting runs in industry and/or the engineering.Be operating as example with the lifting to bottom of electrolytic tank carbon piece in the electrolysis for production industry, along with the development of large scale electrolytic cell, the conductive electrode carbon piece that its trench bottom lays is heavy increasingly, big, can reach at present to be of a size of 3240 * 500 * 450 millimeters, to weigh 2 tons.Because its material is by carbon-graphite, frangible and surface lubrication influences electric conductivity for making its surperficial unlikely damage, can not tie in constructing operation and can not prize, thereby must adopt special-purpose stone tongs construction, with needing two or more stone tongs compounding practice simultaneously often.At present in the structure of this class stone tongs, normally have a pair of through middle part hinge bonded assembly jig arm, by promoting operation through the lifting of articulated structure bonded assembly hanging beam at its manipulatable end, control with it relatively and be fixed with a pair of piece-holder end with the relative gripper jaw head of clamping face, the holding action that workpiece or parts are carried out folding.Because the holding action of this gripper jaw head is the rotational motion of doing around the hinge at jig arm middle part with the bare terminal of jig arm, thereby two clamping faces between its relative gripper jaw head are except that being in the parastate on a certain ad-hoc location, when all the other positions, all certainly exist the clamping angle that differs in size, lifted workpiece or parts at cross sectional shape in addition, many-sided differences such as surface local state or machining tolerance, caused in hoisting process, with be difficult to equilibrium by stressed on lifting workpiece or the contacted gripper jaw head of the parts clamping face, not only easily cause by the surface damage of lifting workpiece or parts, to operation in the hoisting process and/or quality, and tangible adverse effect is arranged all also in service life of gripper jaw head etc.

The utility model content

At above-mentioned situation, the utility model will provide a kind of lifting that improves structure to execute

Anchor clamps, make it have adaptive floating type adjustment function according to the workpiece of clamping or the global shape and/or the surface local shape of parts, the contact surface that reaches the clamping face that makes the gripper jaw head and workpiece or parts stressed balanced as far as possible in hoisting process, help guaranteeing not being damaged and lifting operation and quality, and prolong the service life of gripper jaw head by lifting workpiece or parts surface.Outside the lifting and/or installation that this lifting construction anchor clamps decapacitation preferentially is used for grow up as shapes such as electrolysis for production industry electrolytic bath carbon pieces and easy damaged etc. had higher requirements, also be applicable to the lifting construction operation under other situation.

Lifting construction anchor clamps of the present utility model comprise a fixture unit at least in its structure, have a pair of through middle part hinge bonded assembly jig arm in this fixture unit.This manipulatable end to jig arm promotes hanging beam through articulated structure and lifting respectively and is connected, the bare terminal of jig arm also is provided with the relative a pair of gripper jaw head of clamping face, wherein each gripper jaw head is the bare terminal that is connected in its place jig arm respectively through the articulated structure of horizontal axis, and the clamping face of each gripper jaw head all has concavo-convex coarse structure.This concavo-convex coarse structure can be adopted as dentalation or other suitable version of horizontal parallel arrangement, and wherein the dentalation with horizontal parallel arrangement can have even more ideal strained condition and performance.Particularly in hoisting process, be under the stressed situation of clamping, its dentation coarse structure more can improve the reliability of its clamp position in the time being in the state of little embedding by the mating surfaces of lifting workpiece or parts but not only depending on friction force between its mating surfaces.Test results shows, the clamp position of said here " little embedding " formula generally can not impact its normal damage of using to the surface of workpiece or parts.For example, even the aforementioned electrolytic bath carbon piece that weighs 2 tons is carried out lifting construction with the clamp position of this little embedding, also only about 0.5 millimeter of the formed insert depth in the carbon piece surface of its retaining part, in fact can a kind of almost damage-free level.

Be appreciated that, make the gripper jaw head be connected the bare terminal of jig arm through the articulated structure of horizontal axis, the gripper jaw head has been overcome well be connected at present the existing clamping angle of formula pawl head problem when holding workpiece or parts, can be adapted by the cross sectional shape of lifting workpiece or parts and remain plane-parallel state all the time substantially, make the contact part potential energy of itself and workpiece or parts that more balanced clamping action power be arranged, both guaranteed clamping stability, also reduce to greatest extent and avoided damage, and prolonged the service life of gripper jaw head workpiece or parts retaining part.

On the said structure basis, further can also be designed to said this gripper jaw head the form of unitized construction body, that is: a clamp structure body with concavo-convex coarse structure clamping face is connected the version on the support body through elastic structure by connection structure.Wherein generally all need by the manufacturing of high strength rigidity material except that this clamp structure body and support body, said this elastic structure can adopt as High molecular material bodies such as rubber commonly used, rubber and plastic, plastics, or adopts as elastic structures such as some springs.Make the interconnective attaching parts of this unitized construction body, can adopt as structure or members such as bolt commonly used, pin cards.Under stressing conditions, can produce appropriate elastically-deformable characteristics by this elastic structure, can further improve the clamping face and the local adaptation's property that is lifted workpiece or parts contact site of this clamp structure body in the gripper jaw head, also more help further minimizing is held the position to workpiece or parts damage.

Owing to lift an important source of the Clamping force that is applied when operating, lifted the self gravitation of workpiece or parts, and under the action of gravity of workpiece or parts, the below of gripper jaw head is the stressed maximum of lower edge particularly.Therefore on the basis of the gripper jaw head that adopts combinations thereof structure form, the clamp structure body and the elastic structure that have concavo-convex coarse structure clamping face in this gripper jaw head are had on the support body of support structure, to disperse its force-bearing situation to be connected the below by the mode of support by connection structure.

For making above-mentioned gripper jaw head and/or clamp structure physical efficiency wherein that adaptive range on more multi-aspect be arranged, said gripper jaw head, or this clamp structure body that has concavo-convex coarse structure clamping face at least in the unitized construction bodily form formula gripper jaw head, can also adopt by connection structures such as said bolts and be connected in through the easy fit connecting bore on it on bare terminal or corresponding support body of jig arm, thereby can make the gripper jaw head above-mentioned by the horizontal axis articulated structure obtained on the basis of the self adaptation regulatory function on the single direction, can also obtain the appropriate action radius that on other direction, also has by this easy fit connecting bore, further enlarged the self adaptation setting range and the ability that are held the surface local state of workpiece or parts for adaptation, thereby realized to have omnibearing " floating " formula self adaptation adjusting function.

Because the gripper jaw head in the said structure has had can free movable floating type self adaptation setting range, be arbitrarily rocking of preventing that it from producing in work progress, between the jig arm bare terminal at said this gripper jaw head and its place, can add and to prevent that this gripper jaw head from arbitrarily rocking but can not influence the damping structure of the appropriate form of its normal operation.The damping structure of a kind of simple form that can be for reference that in a specific embodiment, provides for example, but be between the contact site of gripper jaw head and jig arm bare terminal one or both sides, be provided with and under action of the spring, can make it be in contact with one another the decorative pearl on top of an official cap that holds out against or jacking block top etc. to touch structure, this spring and/or contact structure etc. can by structures such as location adjustable bolt be arranged on can with the location structure of the structural hole of the contacted suitable position of jig arm bare terminal or other appropriate form in.

Except that said structure, a side of the manipulatable end of hinge also can be provided with open lock structure as required in the middle part of said two jig arm, makes anchor clamps can remain in required opening position before holding workpiece or parts.

Be held workpiece or parts when comparatively or especially long, big, need to adopt at least two stone tongs to cooperate and carry out constructing operation simultaneously, for this reason, in above-mentioned stone tongs of the present utility model, can adopt the fixture unit of at least two said structure forms, and the tie-beam of the corresponding jig arm position through being separately positioned on each anchor clamps interconnects, thereby realizes making each fixture unit can realize the folding holding action of synchronization action in the lifting construction operating process.

Below in conjunction with by the specific embodiment shown in the drawings as embodiment, foregoing of the present utility model is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following example.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements or change according to ordinary skill knowledge and customary means are made include in scope of the present utility model.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model lifting construction anchor clamps.

Fig. 2 is the decomposition texture scheme drawing of gripper jaw head in Fig. 1 fixture unit.

Fig. 3 is the damping structure scheme drawing that prevents among Fig. 2 that the gripper jaw head from rocking.

The specific embodiment

Lifting construction anchor clamps as shown in the figure are made up of the fixture unit of two same structure forms at least.A pair of hinge 10 bonded assembly jig arm 4 through the middle part are arranged in each fixture unit, and its manipulatable end is connected in lifting through separately hinge 11 and cooresponding anchor clamps auxiliary 2 and a common hinge 12 respectively and promotes on the hanging beam 1.The distolateral open lock structure 3 that is provided with of manipulation at the middle part hinge of two jig arm 4; Be provided with unitized construction body gripper jaw head 6 respectively in the bare terminal portion of two jig arm 4 with the relative a pair of identical form of clamping face 9.This gripper jaw head 6, is connected on the support box body 14 by bolt 21 through having the caoutchouc elasticity plate structure body 18 of respective shapes by the clamping tooth plate structure 20 of the concavo-convex coarse clamping face 9 of teeth groove version that is provided with horizontal parallel arrangement.Horizontal axis hinge 8 on 6 clamping plate type connection structures through being arranged at its support box body 14 backboard portion back sides of gripper jaw head is connected in the corresponding end of two jig arm 4.Wherein this clamping tooth plate structure 20 and caoutchouc elasticity plate structure body 18 be all with by the mode of 17 supports in support limit, below of support box body 14, and be connected on the backboard front of support box body 14 by bolt 21 through the easy fit connecting bore 19 on it.In gripper jaw head 6 the support box body 14 backboard back sides be used for jig arm 4 these connection structures of bare terminal bonded assembly on also be provided with a damping structure that can prevent that gripper jaw head 6 from arbitrarily rocking.This damping structure is to have a hole 7 on side clamping plate of clamping plate type connection structure, and in this hole 7, a spring 15 is arranged by location adjustable bolt 13 sealing and the forms such as the decorative pearl on top of an official cap that under its resilient force, can contact mutually with the contact surface of jig arm bare terminal contact structure 16.

For making each fixture unit can keep doing synchronous opening and closing movement when the lifting construction, between the corresponding position of the corresponding jig arm 4 of each fixture unit, be provided with tie-beam 5 and it is interconnected.

Claims

1. lifting construction anchor clamps, at least comprise a fixture unit, have a pair of in this fixture unit through middle part hinge (10) bonded assembly jig arm (4), its manipulatable end promotes hanging beam (1) through articulated structure and lifting and is connected, its bare terminal is provided with the relative a pair of gripper jaw head (6) of clamping face (9), it is characterized in that each gripper jaw head (6) is connected in the bare terminal of its place jig arm (4) respectively through the articulated structure (8) of horizontal axis, the clamping face (9) of each gripper jaw head (6) has concavo-convex coarse structure.

2. lifting construction anchor clamps as claimed in claim 1, it is characterized in that said gripper jaw head (6) is the unitized construction body, the clamp structure body (20) with concavo-convex coarse structure clamping face (9) is connected on the support body (14) by connection structure (21) through elastic structure (18).

3. lifting construction anchor clamps as claimed in claim 2 is characterized in that the clamp structure body (20) and the elastic structure (18) that have concavo-convex coarse structure clamping face (9) in the said gripper jaw head (6) have on the support body (14) of support structure (17) to be connected the below by the support mode by bolt type connection structure (21).

4. lifting construction anchor clamps as claimed in claim 2, the clamp structure body (20) that it is characterized in that having at least in the said gripper jaw head (6) concavo-convex coarse structure clamping face (9) is to be connected on the support body (14) through the easy fit connecting bore (19) on it by connection structure (21).

5. lifting construction anchor clamps as claimed in claim 1 is characterized in that being provided with the damping structure that prevents that gripper jaw head (6) from arbitrarily rocking between jig arm (4) bare terminal at said gripper jaw head (6) and its place.

6. lifting construction anchor clamps as claimed in claim 5, it is characterized in that said damping structure be between the contact site of gripper jaw head (6) and jig arm (4) bare terminal, be provided with contact structure (16) by what spring (15) made that it is close to mutually, spring (15) and this contact structure (16) by location adjustable bolt (13) be arranged on can with the contacted connection structure of jig arm (4) bare terminal on.

7. lifting construction anchor clamps as claimed in claim 6 is characterized in that the spring (15) in the said damping structure and contact structure (16) being arranged on its connection structure at least one side cavities (7) at the position that contacts with jig arm (4) bare terminal by location adjustable bolt (13).

8. lifting construction anchor clamps as claimed in claim 1, the concavo-convex coarse structure that it is characterized in that said gripper jaw head (6) clamping face (9) is the dentalation of horizontal parallel arrangement.

9. as the described lifting construction anchor clamps of one of claim 1 to 8, it is characterized in that also being provided with open lock structure (3) in manipulatable end one side of said two jig arm (4) middle part hinge.

10. as the described lifting construction anchor clamps of one of claim 1 to 8, it is characterized in that having at least two said fixture units, and its tie-beam of making synchronization action (5) is interconnected through being separately positioned on its corresponding jig arm (4) position.