CN2078741U

CN2078741U - Direct-coupled two-position-limiting controlling device

Info

Publication number: CN2078741U
Application number: CN 90225385
Authority: CN
Inventors: 周守林
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-11-29
Filing date: 1990-11-29
Publication date: 1991-06-12

Abstract

The utility model discloses a direct-coupled two-position-limiting controlling device for hoist lifting device, comprising a worm gear, a trimming gear, an inching switch and a control circuit. The utility model is characterized in that one end of the worm screw is provided with a connecting axle head which can be directly connected with the chief axis of the crane. The worm gear is driven by the worm screw. The ring gear is driven by the worm gear shaft, and the ring gear is provided with a boss which can clash the contact point of the inching switch as rotating, controlling the inching switch to disconnect. The ring gear and the trimming gear are in mesh, adjusting the trimming gear to delimit the upper spacing and the lower spacing. The utility model has the speed ratios of 1: 30, 1: 50, 1: 70 and 1: 100, and can be used for the height lifting equipment from 5m to 90m. The positive and negative error is limited in 2 cm, safely and reliably.

Description

Direct-connected two control limiting device

The utility model is about a kind of limiting device, more particularly relates to a kind of device with elevator, lifting, hoisting crane upper control limit position.

The limiting device of existing weight-lifting equipment (travel switch), weight-lifting equipments such as the well cabinet frame of building ground, door frame particularly, limiting device is installed in the steel tower top, tens of rice or the spacing control electric wire of hundreds of rice are introduced in the winch control box, limiting device is installed aerial, maintenance is inconvenient, damages sometimes and can not in time find, so that often cause roof fall accident.Lower limit is not often adorned inhibiting device, causes winch cylinder disorder cable easily yet.Secondly, the electric block in factory's driving uses moving slider, drives limiting device, and its structure is complicated, and electric block pull bar oil starvation or normal phase use rear slider ineffective, spacing inoperative, can cause the accident.

Two control limiting devices that the utility model purpose is to provide a kind of elevator, crane lifting to use can the upper control limit position, again can the lower control limit position.The limiting device direct connection is on winch main shaft or hoisting crane main shaft, and volume is little, and is simple in structure, easy to use, safe and reliable.

The purpose of this utility model is achieved through the following technical solutions.

The utility model is made up of worm gear, worm screw, fine setting gear, inching switch, limiting device box and control path, it is characterized in that:

The end of a, worm screw has the connection spindle nose, connect spindle nose pass the limiting device base directly be fixed on winch main shaft or hoisting crane main shaft on connecting panel link to each other, described position-limited box is made up of base and lid;

B, worm and wheel engagement, worm screw, worm gear have been installed in the worm gear shell, and the worm gear shell is fixed on the base;

C, worm gear are fixed on the worm-wheel shaft, and worm-wheel shaft is installed on the worm gear shell;

D, fine setting gear are meshed with the internal tooth of internally toothed annulus, and internally toothed annulus is installed on the worm-wheel shaft, and a boss is arranged on the internally toothed annulus, and internally toothed annulus is inner to match with the interior cover of fine setting, and internally toothed annulus has fine-adjustment outer outward, and the fine setting gear is installed on the fine-adjustment outer;

E, inching switch are installed on the worm gear shell, and the inching switch contact can be collided with the boss on the internally toothed annulus, and inching switch connects control path.

The utility model drives worm screw work by winch main shaft or hoisting crane main shaft, the moving circle of worm screw revolution, and worm gear rotates a tooth, and after worm gear rotated the number tooth, the outer boss of fine setting internally toothed annulus brushed up against the inching switch contact, causes power supply to disconnect.Equally, outer another inching switch contact of the reverse percussion of boss of fine setting internally toothed annulus also makes power supply disconnect.

The utility model can be regulated by following speed ratio 1: 30,1: 50,1: 70,1: 100, be respectively applied for the weight-lifting equipment of differing heights and length 5-90 rice, also is applicable to that winch, electric block and all are the lifting facility of the energy with the electricity.

The utility model selects to adapt to the speed ratio limiting device, and control path is connected, and after fine setting, spacing the going up of wanting of can in officely what is the need for stopped, and positive negative error is no more than 2 centimeters.To the roof fall of last may command superelevation, under can prevent that fishhook lands, the reel disorder cable, the accident that prevents takes place.

Fig. 1 is the utility model structural representation.

Fig. 2 is the section-drawing of the utility model constructional drawing 1.

Fig. 3 is the utility model control path figure.

Fig. 4 is the utility model connecting panel scheme drawing.

Fig. 5 is the utility model and hoisting crane main shaft connection diagram.

Number in the figure:

1, base, 2, lid, 3, worm screw, 4, connect spindle nose, 5, connect the spindle nose tenon, 6, worm gear, 7, the worm gear cover, 8, worm-wheel shaft, 9, internally toothed annulus, 10, the fine setting gear, 11, the internally toothed annulus boss, 12, inching switch, 13, the inching switch contact, 14, the sealing volume, 15, cover in the fine setting, 16, fine-adjustment outer, 17, seal receptacle, 18, and tight volume, 19, connecting panel, 20, hoisting crane main shaft.

By the following examples, in conjunction with the accompanying drawings, the utility model is done into description.

Embodiment

The worm gear 6 of (referring to accompanying drawing 1, Fig. 2) present embodiment, worm screw 3, fine setting gear 10, inching switch 12 are installed in the limiting device box, and the limiting device box is made up of base 1 and box shell 2.The limiting device box is circular, and diameter is 88 centimeters, and height is 76 centimeters.Base 1 height is 18 centimeters, and worm screw 3 one end loads connect spindle nose 4, and connecting spindle nose 4 one ends has boss, and boss is tenon 5 shapes, and base 1 has through hole, and connecting spindle nose has tenon 5 one ends to be installed in outside the base 1.Connect spindle nose 4 by being installed in the connecting panel on the hoisting crane main shaft 20, join with the hoisting crane main shaft.Worm screw 3 nibbles 6 with worm gear and closes, and outside worm screw 3 and the worm gear 6 worm gear shell 7 is arranged, and the worm gear shell is fixed on the base 1.Base 1 can be made of plastics with worm gear shell 7.Worm gear 6 is installed on the worm-wheel shaft 8, and worm-wheel shaft 8 is installed on the worm gear shell 7.Two fine setting gears 11 are meshed with two internally toothed annuluss 9, and internally toothed annulus 9 is installed on the worm-wheel shaft at worm gear shell 7 outer two ends.One boss is arranged outside the internally toothed annulus 9.Match with cover 15 in the fine setting in the internally toothed annulus 9, fine-adjustment outer 16 is arranged outside the internally toothed annulus 9, fine setting gear 10 is installed on the fine-adjustment outer 16.Inching switch 12 is two, is installed in the upper end of fine setting gear 10 respectively, is fixed on the worm gear shell 7.Inching switch 12 has a contact to collide with internally toothed annulus 9 boss 11.Inching switch 12 joins with control line, and control line communicates with control circuit.

Present embodiment has through hole for waterproof in position-limited box base 1 one sides, and power lead is drawn by through hole, and the outer end, through hole is furnished with seal receptacle 17 and also collar 18, and ○Xing Mifengquan 14 is housed in the seal receptacle 17.The spindle nose tenon passes the inner, position-limited box base 1 through hole ○Xing Mifengquan 14 is housed continuously.

Claims

1, a kind of direct-connected two control limiting devices that are used for hoisting device are made up of worm gear, worm screw, fine setting gear, inching switch, limiting device box and control path, it is characterized in that:

The end of a, worm screw is equipped with the connection spindle nose, connect spindle nose pass the position-limited box base directly be fixed on winch main shaft or hoisting crane main shaft on connecting panel link to each other, described position-limited box is made up of base and lid;

B, worm and wheel engagement, worm screw, worm gear are installed in the worm gear shell, and the worm gear shell is fixed on the base;

D, fine setting gear are meshed with the internal tooth of internally toothed annulus, and internally toothed annulus is installed on the worm-wheel shaft, and a boss is arranged on the inner gear, and internally toothed annulus is inner to match with the interior cover of fine setting, and internally toothed annulus has fine-adjustment outer outward, and the fine setting gear is installed on the fine-adjustment outer;

E, inching switch are installed on the worm gear shell, and the inching switch contact can be collided with the boss on the inner gear, and inching switch connects control path.

2, two control limiting device according to claim 1 is characterized in that described worm drive worm gear, and worm gear drives internally toothed annulus by worm-wheel shaft, and it is spacing to brush up against the control of inching switch contact with the outer boss rotation of internally toothed annulus.