CN2639275Y

CN2639275Y - Balance device of lifting article

Info

Publication number: CN2639275Y
Application number: CN 03207496
Authority: CN
Inventors: 郑新强
Original assignee: YINGJIANG MACHINERY Manufacturing Co Ltd HANGZHOU
Current assignee: YINGJIANG MACHINERY Manufacturing Co Ltd HANGZHOU; HANGZHOU YINGJIANG MACHINERY MANUFACTURE Co Ltd
Priority date: 2003-09-01
Filing date: 2003-09-01
Publication date: 2004-09-08
Anticipated expiration: 2013-09-01

Abstract

The utility model discloses a balance device for suspending, which can be used cooperated with a hoisting machine in order to make the suspended components or products set down evenly according to the stated orientation, which is convenient for installation or prevents being damaged because of the vertical hoisting. The device comprises a connecting support (1), which can be connected with a hoisting machine and is provided with a connecting chain (1a) and a trolley (1b), a supporting bracket (2), which can roll on the trolley and is provided with two pothooks (2a) and two bearing seats (2c), and thread pole nut framework (3), which is positioned between the supporting bracket and the connecting support and can make the supporting bracket move corresponding to the connecting support. A thread pole (3a) of the thread pole nut framework is arranged in the bearing seat; and a nut (3b) is fixed on the connecting support. Besides, a block ring (2d) and a rocker (4), which can rotate the thread pole are positioned on the extending part of the bearing seat of the thread pole. The device is characterized in that: a roll bearing (5) is positioned between the bearing seat and the block ring. The utility model can overcome the problems such as hard operation and non-safety and credibility in the prior similar devices.

Description

The balancing device of hanging object

Technical field

The utility model relates to a kind of energy and gig, as supporting uses such as loop wheel machine, hoisting cranes, so that can steadily be put down, be beneficial to install by the needed orientation of people, perhaps make normal orientation hanging object can remain its lifting in hanging before, be damaged because of hanging is improper avoiding by the mechanical equipment assembly of hanging or product.

Background technology

As everyone knows, people often close at following field boundary can use loop wheel machine, a kind of is the installation or the maintenance of mechanical equipment, for example assemblies such as automotive engine, gear reduction box, large-scale main shaft are hung in the main body of mechanical equipment, at this moment people's requirement is hung assembly and can steadily be put into by the needed orientation of people, is beneficial to install; Also having a kind of is that large product is cased, as electric refrigerator etc., these products often do not allow, and also must remain its normal orientation before lifting in the hanging process, for example consistent with its orientation or orientation in the use on the ground, to avoid damage.For this reason, people have been provided with the balancing device of a hanging object between the suspension hook of loop wheel machine and hanging object.

The balancing device of existing hanging object can be seen from Fig. 5, it contain an energy and loop wheel machine bonded assembly band connection chain 1a and roller 1b link span 1, one can roll on the roller and have the bracing frame 2 of two hook 2a and two axle sleeve 2c ' on it, between bracing frame 2 and link span 1, install can make the leading screw and nut mechanism 3 of bracing frame with respect to the link span sway, wherein the screw mandrel 3a in this mechanism is installed in the bracing frame axle sleeve, nut 3b is fixed on the link span 1, and screw mandrel has back-up ring 2d on overhanging section of axle sleeve, rocking bar 4 is equipped with in the end of back-up ring.As rotating rocker 4, the rotation of screw mandrel in captive nut can drive left and right move of bracing frame on roller, and bracing frame is changed in the length of link span and arranged on left and right sides, thereby changed the orientation of the object of hanging on two hook 2a.

The balancing device of above-mentioned existing hanging object also has following shortcoming: 1) bracing frame tilts when the hanging object, weight of object produce axial component on the screw mandrel and act directly on axle sleeve and back-up ring on, so want rotating rocker very hard, even change motionless; 2) bigger because of the rotation friction between axle sleeve and the back-up ring, wearing and tearing are severe, makes that endplay between axle sleeve and the back-up ring will continue to increase, occurs the end float misalignment of bracing frame in the hanging easily, so safe reliability is relatively poor.

Summary of the invention

The utility model is to overcome the shortcoming that exists in the above-mentioned prior art, and a kind of balancing device of hanging object of safe and reliable, rapid operation is provided, and makes it have simple and reasonable, installation and characteristics such as easily manufactured.

The balancing device of the utility model hanging object, it contains the link span of an energy and loop wheel machine bonded assembly band connection chain and roller, be installed on the roller of link span and have the bracing frame of two hooks and back-up ring, that installs between bracing frame and link span can make the leading screw and nut mechanism of bracing frame with respect to the link span sway, this mechanism comprises an interior screw mandrel and the nut that is fixed on the link span of bearing seat that is installed in bracing frame, and screw mandrel has the rocking bar of a back-up ring and an energy rotary screw rod on overhanging section of bearing seat, be characterized in: between bearing seat and the back-up ring antifriction-bearing box is housed.

Above-mentioned antifriction-bearing box is plain thrust bearing preferably.

The beneficial effects of the utility model are: after 1) the utility model is equipped with antifriction-bearing box between bearing seat and back-up ring, make moving contact between the two change rolling touch into, so friction force reduces greatly, rotating rocker is more laborsaving; 2) rolling touch between back-up ring and the bearing can reduce to each other wearing and tearing, effectively avoid gap between the axial component, guarantees the safe and reliable of hanging process; 3) of the present utility model simple and reasonable, and compared with prior art, just between bearing seat and back-up ring, set up a bearing, and do not change the overall structure of existing balancing device, therefore also help the renewal of prior art and apply.

Also the utility model is described in further detail in conjunction with the accompanying drawings below by embodiment.

Description of drawings

Fig. 1 is the front view of the balancing device of the utility model hanging object;

Fig. 2 and Fig. 3 are respectively A-A profile and the B-B profiles among Fig. 1;

Fig. 4 is the balancing device constitution diagram in use of the utility model hanging object;

Fig. 5 is the front view of the balancing device of existing hanging object.

Label declaration among the figure: 1-link span; The 1a-connection chain; The 1b-roller; 1c-symmetry plate; The 2-bracing frame; The 2a-hook; 2b-chaining 2c-bearing seat; 2c '-axle sleeve; The 2d-back-up ring; The 3-leading screw and nut mechanism; The 3a-screw mandrel; The 3b-nut; The 4-rocking bar; The 5-antifriction-bearing box.

The specific embodiment

The balancing device of present embodiment hanging object, its structure can be seen from Fig. 1-Fig. 3, the leading screw and nut mechanism 3 that it contains a link span 1, bracing frame 2 and moves back and forth about bonded assembly between bracing frame and the link span can make bracing frame do with respect to link span.Wherein leading screw and nut mechanism comprises interior screw mandrel 3a, the nut 3b who is fixed on the link span of bearing seat 2c that is installed in bracing frame, screw mandrel with the affixed back-up ring 2d of pin and be connected rocking bar 4 on the back-up ring, and is equipped with antifriction-bearing box 5 on the screw axis between bearing seat and the back-up ring on overhanging section of bearing seat.

Above-mentioned link span 1 comprises that two symmetrical plate 1c and chuck are connected connection chain 1a, roller 1b, screw mandrel 3a, the bracing frame 2 between two symmetrical plates.Wherein connection chain 1a is connected the top of link span 1 by bearing pin, so that the balancing device of present embodiment hanging object can be connected on the hook of loop wheel machine (not giving expression among the figure); Screw mandrel 3a be positioned at link span 1 the middle part, wear the slotted hole that is fixed on two symmetrical plate 1c middle part with its ingear nut 3b, do moving axially to the left or to the right while rotating to guarantee screw mandrel; 2 bottoms that are positioned at link span 1 of bracing frame, and be connected on the screw axis by the left and right sides diaxon bearing 2c on it, drive sway on roller 1b by screw mandrel.The bottom of bracing frame 2 has connected the hook 2a that is used for the hanging object respectively by two chaining 2b, and the equal in length of two hooks.

When using the balancing device of present embodiment hanging object, by connection chain 1a this device is suspended on the suspension hook of loop wheel machine earlier, and hanging object is inserted in the hook 2a in this device.When loop wheel machine rose slowly, hanging object began to sling; At this moment rotatable rocking bar 4 makes leading screw and nut mechanism 3 drive strut bars 2 and does moving to the left or to the right, so that the brachium of strut bar on the link span left and right side changes, by this adjustment, hanging object can be equilibrated in the lifting process on the desired orientation of people, perhaps be equilibrated to hang and install on the required orientation.For example the quilt shown in Fig. 4 hangs main shaft (representing with long and two-short dash line among the figure) and is equilibrated at and installs on the required level attitude, and at this moment bracing frame 2 tilts greater than right side, bracing frame 2 in the arm of force length in link span 1 left side; If hanging can not the bevelled electric refrigerator, then can make bracing frame 2 be level at arm of force equal in length, the bracing frame of link span and arranged on left and right sides, electric refrigerator all is equilibrated on the upright orientation in the whole process of hanging, that is consistent with its orientation on the ground.Roller 1b is provided in a side of a strong point on the link span, and it supports to roll stay bearing plate, has both improved the stressing conditions of stay bearing plate, and resistance is little again.

Above-mentioned antifriction-bearing box 5 is plain thrust bearing preferably, and because of it can stop axial force effectively, shaking rocking arm will be lighter reliable.

Claims

1. the balancing device of a hanging object, it contains the link span (1) of an energy and loop wheel machine bonded assembly band connection chain (1a) and roller (1b), one can rolled on the roller and have the bracing frame (2) of two hooks (2a) and two bearing seats (2c) on it, that installs between bracing frame and link span can make the leading screw and nut mechanism (3) of bracing frame with respect to the link span sway, wherein the screw mandrel (3a) in this mechanism is installed in the bracing frame bearing seat (2c), nut (3b) is fixed on the link span (1), and screw mandrel has the rocking bar (4) of a back-up ring (2d) and an energy rotary screw rod on overhanging section of bearing seat, it is characterized in that: between bearing seat (2c) and the back-up ring (2d) antifriction-bearing box (5) is housed.

2, the balancing device of hanging object according to claim 1 is characterized in that: said antifriction-bearing box (5) is a plain thrust bearing.