CN201411324Y

CN201411324Y - Crane tong

Info

Publication number: CN201411324Y
Application number: CN2009200124704U
Authority: CN
Inventors: 朱万明; 张仁; 迟国东
Original assignee: Dalian Huarui Co Ltd
Current assignee: Dalian Huarui Heavy Industry Group Co Ltd
Priority date: 2009-03-24
Filing date: 2009-03-24
Publication date: 2010-02-24
Anticipated expiration: 2019-03-24

Abstract

The utility model provides a crane tong, which is characterized by having convenient installation, easy adjustment, convenient maintenance, small volume and low cost and providing good operational sight for an operator and the like. The crane tong comprises an opening and closing mechanism, tong legs and a tong body; the opening and closing mechanism adopts a double lead screw transmission mode; adriving device is arranged on the tong body and is provided with a main chain wheel and two auxiliary chain wheels; the main chain wheel is arranged on a main shaft of the driving device and carriesout meshed transmission with the auxiliary chain wheels by chains; the leftward rotating lead screw and the rightward rotating lead screw are respectively and fixedly connected with the two auxiliarychain wheels, are rotatably and fixedly arranged on the tong body by a fixing device and are respectively provided with a sliding block with leftward rotating threads at the inner surface and a sliding block with rightward rotating threads at the inner surface; the sliding blocks are fixedly connected with the tong legs; in addition, the leftward rotating lead screw and the rightward rotating leadscrew are also respectively provided with a limiting device.

Description

The hoisting crane clamp

Technical field

The utility model relates to the elevator machinery field, the hoisting crane clamp on particularly a kind of metallurgical suspender that is applied in the elevator machinery field.

Background technology

Current owing to steel rolling processing equipment constantly updates, the coil of strip product has formed large-scale mass production gradually, this just requires in the process of handling, transhipment, collapse of setting, transportation etc., the suspender product will be more flexibly, conveniently to the operation of coil of strip, and requiring to be easy to maintenance, repair time will lack, so that the saving production time, the needs of adaptation Quantity production.The hoisting crane clamp generally includes parts such as switching mechanism, pincers leg, caliper, and switching mechanism is its core component, and the type of drive of existing switching mechanism comprises type of drive such as rack-and-gear, monofilament thick stick, three leading screws.Because coil of strip is in the process of handling, the operating personal in the driver's cab will be watched the state of the weight of handling all the time attentively, to satisfy the requirement of steel rolling process, can use the clamp structure complexity of three traditional lead screw transmission systems, volume is bigger, shelters from the operating personal sight line easily, can't solve so far; Tradition monofilament thick stick driving system, because the diameter of leading screw is bigger, size wants big on the thickness direction of caliper body, and the size of the volume of clamp own just depends on the thickness of caliper body, therefore use the clamp volume of monofilament thick stick driving system will be bigger, install, effort relatively in the maintenance process; The rack-and-gear driving system requires the setting accuracy height, and maintenance is difficult, and maintenance time is long; Therefore the three does not satisfy the requirement of Quantity production steel rolling process.

Summary of the invention

The utility model is made based on above problem, aim to provide a kind of have easy for installation, regulate easily, maintenance is convenient, volume is little, cost is low, the hoisting crane clamp that operating personal has characteristics such as good operation sight line and is easy to promote.

Hoisting crane clamp of the present utility model, comprise switching mechanism, the pincers leg, caliper, described switching mechanism adopts mariages thick stick type of drive, comprise actuating device, head sprocket, two auxiliary chain wheels, chain, left-handed leading screw, the dextrorotation leading screw, slide block, inhibiting device, described actuating device is installed on the described caliper, head sprocket is installed on the main shaft of actuating device, head sprocket is by chain and auxiliary chain wheel engaged transmission, described left-handed leading screw, the dextrorotation leading screw is affixed and by the rotating caliper that is fixedly installed in of anchor fitting with two auxiliary chain wheels respectively, left-handed leading screw, inner face is set respectively on the dextrorotation leading screw has the slide block of minus thread and the slide block that inner face has right-hand screw thread, this slide block and described pincers leg are affixed, and at left-handed leading screw, also be provided with described inhibiting device on the dextrorotation leading screw.

Hoisting crane clamp of the present utility model, described actuating device are three-in-one reducing motor.

Its inhibiting device of hoisting crane clamp of the present utility model is made of limit switch, buting iron or one of them.

Hoisting crane clamp of the present utility model, described anchor fitting are rolling bearing units.

Hoisting crane clamp of the present utility model, the form of installing with slideway when described pincers leg is fixedly installed in slide block is installed on the described caliper.

The beneficial effects of the utility model are:

Because lifting clamp of the present utility model adopts mariages thick stick system to realize transmission, it is little to compare single leading screw diameter with traditional monofilament thick stick transmission, therefore make that clamp thickness is little, thereby make that the clamp volume is little, be beneficial to the operator clearly observes clamp handling coil of strip in control cabin situation, and because diameter is little, the forging raw MAT'L that adopts is just little, and cost is low, and is beneficial to processed, heat treatment hardness is higher, and resistance to abrasion is better in the use.And because the volume of the lifting clamp of employing mariages thick stick transmission is little, single leading screw is in light weight, makes to lift easily in the process of installing, overhauling, and is convenient to operation.

Description of drawings

Fig. 1 is the utility model hoisting crane clamp opening and closing structure sketch;

Fig. 2 is that the utility model hoisting crane clamp structure is installed sketch;

Fig. 3 is that the utility model hoisting crane clamp leading screw is installed sketch;

Fig. 4 is the utility model hoisting crane clamp work scheme drawing;

Fig. 5 is the utility model hoisting crane clamp work scheme drawing.

1. actuating device 2. head sprockets 3,3 ' auxiliary chain wheel 4. chains 5. left-handed leading screw 6. dextrorotation leading screws 7,7 ' slide block 8. rolling bearing units 9. limit switches 10. buting iron 11. clamp calipers 12,12 ' clamps clamp leg 13 supporting constructions

The specific embodiment

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model hoisting crane clamp opening and closing structure sketch, actuating device 1 can be made of three-in-one reducing motor, it is electrical motor, reductor, the actuating device that drg is integrated, also can adopt variable-frequency motor, head sprocket 2 is connected with actuating device 1, auxiliary chain wheel 3,3 ' when linking to each other by chain 4 with head sprocket 2 respectively with left-handed leading screw 5, dextrorotation leading screw 6 captive joints, left-handed leading screw 5, be respectively arranged with slide block 7 and slide block 7 ' on the dextrorotation leading screw 6, slide block 7,7 ' inner face be provided with screw thread respectively with left-handed leading screw 5, dextrorotation leading screw 6 is threaded, left-handed leading screw 5, dextrorotation leading screw 6 is installed on caliper by rolling bearing units 8 respectively, make the rotating anchor fitting that is fixed in caliper of two leading screws adopt rolling bearing units 8 in the present embodiment, can certainly adopt the support that fixes of bearing or self-lubricating bearing is installed in the bearing seat.Can drive head sprocket 2 after actuating device 1 energising rotates, head sprocket 2 drives two auxiliary chain wheels rotations by chain 4 again simultaneously, then two auxiliary chain wheels drive two leading screws rotations again, owing to stagger with two slide block installation sites in the vertical of two threads of lead screw bonded assemblys respectively, make two slide blocks on the leading screw at place separately in opposite directions or the opposing straight-line motion of doing.Inhibiting device comprises limit switch 9 in the present embodiment, buting iron 10, be installed in respectively near the path of motion end (B of two slide blocks on leading screw, B '), also can be with limit switch 9, buting iron 10 is installed in the limit of sports record position (C of one of them slide block on its place leading screw as Fig. 2 shown in 3, C ') near, certainly inhibiting device also can one of them constitutes by above-mentioned limit switch and buting iron.

Fig. 2, Fig. 3 is that the utility model hoisting crane clamp structure and leading screw are installed sketch, actuating device 1 is installed in the top of clamp caliper 11 as shown in the figure, left-handed leading screw 5, dextrorotation leading screw 6 are installed on clamp caliper 11 by rolling bearing units 8 respectively, two clamps pincers leg 12,12 ' is separately fixed at slide block 7, and the form of installing with slideway in the time of on 7 ' slidably is installed on the crossbeam of caliper 11 (shown in the A of Fig. 2), supporting construction 13 is installed on caliper 11 middle parts, is used to support two rhizoid thick sticks.

Principle of work of the present utility model is:

When clamp is worked, when being actuating device 1 energising, actuating device 1 drives head sprocket 2 and rotates, head sprocket 2 drives auxiliary chain wheel 3 by chain 4,3 ' rotates, because auxiliary chain wheel 3,3 ' respectively with left-handed leading screw 5, dextrorotation leading screw 6 is installed together, thereby drive left-handed leading screw 5, dextrorotation leading screw 6 rotates, rolling bearing units 8 are installed on the crossbeam of clamp, play fixing left-handed leading screw 5, the effect of dextrorotation leading screw 6, because left-handed leading screw 5, dextrorotation leading screw 6 and slide block 7,7 ' is to be threaded, rotate the back and drive slide block 7,7 ' carries out straight-line motion, slide block is fixedly installed togather with the pincers leg again, each leading screw drives a pincers leg, and slide block 7,7 ' installation site difference, the thread rotary orientation on the leading screw is opposite, can realize that so just two pincers legs are on the contrary or carry out straight-line motion on the direction in opposite directions, because inhibiting device in the present embodiment, be limit switch 9, buting iron 10 is to be installed on the wherein limit of sports record position (C, C ') of slide block 7 on leading screw, when slide block 7 moves to position C or C ', just can touch limit switch 9, make actuating device 1 cut off the power supply, two slide block movements stop, the motion that is clamp stops, actuating device 1 is just carrying out automatically immediately, counter-rotating is switched, slide block 7, and 7 ' drive, two pincers legs carry out the direction opposite with moving direction before the switching and carry out straight-line motion, even two pincers legs are once more in opposite directions or carry out straight-line motion on the opposite direction, thereby make pincers leg smooth reciprocation on the lifting beam with tongs slideway, realize the purpose that the pincers leg opens and closes, finish the working cycle that the pincers leg opens and closes.

Fig. 4 represents two slide blocks 7,7 ' is positioned at the limit of sports record position C near two leading screw two ends, the situation at D place, be fixed in slide block 7 this moment, 7 ' two clamps pincers leg 12,12 ' is in open mode, after the actuating device energising, according to above-mentioned principle of work of the present utility model, two slide blocks drive two clamps pincers leg fixed thereon, move to two leading screw middle parts as shown in Figure 5, move to limit of sports record position C ', the D ' of close two leading screw middle parts up to two slide blocks, two clamps pincers leg is in closed condition simultaneously, thereby finishes the pincers leg from being opened to the working process of closing.

Limit switch 9, buting iron 10 are respectively the electric, mechanical dual spacing of this drive system, make actuating device 1 outage thereby touch electric inhibiting device limit switch 9 before this at the end position that clamps the leg stroke, so that assurance mechanism safety.Do not make actuating device 1 cut off the power supply if touch limit switch 9; slide block can drive the pincers leg and continue to slide until running into mechanical stop limiter buting iron 10 its strokes of termination; thereby situation about losing efficacy at limit switch 9 is issued to the assurance mechanism purpose of safety; can not damage mechanism components, the handling coil of strip can not roll out aloft the time yet.

Claims

1, a kind of hoisting crane clamp, comprise switching mechanism, the pincers leg, caliper, it is characterized in that: described switching mechanism adopts mariages thick stick type of drive, comprise actuating device (1), head sprocket (2), auxiliary chain wheel (3,3 '), chain (4), left-handed leading screw (5), dextrorotation leading screw (6), slide block (7,7 '), inhibiting device, described actuating device (1) is installed on the described caliper, head sprocket (2) is installed on the main shaft of actuating device (1), head sprocket (2) is by chain (4) and auxiliary chain wheel (3,3 ') engaged transmission, described left-handed leading screw (5), dextrorotation leading screw (6) respectively with auxiliary chain wheel (3,3 ') affixed and by the rotating caliper that is fixedly installed in of anchor fitting, left-handed leading screw (5), the slide block (7 ') that slide block (7) that inner face has minus thread and inner face have right-hand screw thread is set respectively on the dextrorotation leading screw (6), this slide block (7,7 ') is affixed with described pincers leg, and in left-handed leading screw (5), the dextrorotation leading screw also is provided with described inhibiting device on (6).

2, according to the described hoisting crane clamp of claim 1, it is characterized in that: described actuating device (1) is three-in-one reducing motor.

3, according to the described hoisting crane clamp of claim 1, it is characterized in that: its inhibiting device is by limit switch (9), buting iron (10) or one of them formation.

4, according to the described hoisting crane clamp of claim 1, it is characterized in that: described anchor fitting is rolling bearing units (8).

5, according to the described hoisting crane clamp of claim 1, it is characterized in that: described pincers leg is fixedly installed in slide block and is installed on the described caliper with the form that slideway is installed in the time of (7,7 ').