CN201141422Y

CN201141422Y - Double-velocity outputting speed reducer

Info

Publication number: CN201141422Y
Application number: CNU2007200982547U
Authority: CN
Inventors: 陈明江
Original assignee: TIANJIN SPEED REDUCER CO Ltd
Current assignee: TIANJIN SPEED REDUCER CO Ltd
Priority date: 2007-12-03
Filing date: 2007-12-03
Publication date: 2008-10-29
Anticipated expiration: 2017-12-03

Abstract

The utility model relates to a double-speed output speed reducer. The utility model is characterized in that the double-speed output speed reducer comprises a box body and a planetary transmission gear group; the planetary transmission gear group comprises an input gear meshed with a sun gear, the input gear is a sliding gear which can slide along an input shaft, and a shifting yoke clipping groove on the outer circumference of the sliding gear is connected with a shifting yoke mechanism. Because the sliding gear is driven through the shifting yoke mechanism in the utility model, the convenient double-speed output is realized; because the sun gear drives three planetary gears simultaneously, the reliability is enhanced, and the volume of the speed reducer is reduced.

Description

The speed reducer of double speed output

Technical field

The utility model relates to a kind of speed reducer, particularly a kind of speed reducer of double speed output.

Background technique

Present many industries, especially lifting, industry hoists, in order to increase work efficiency, need be when heavy duty hoist, it is slow that lifting velocity is wanted, and when zero load, need speed to want fast, existing speed governing means mainly contain motor speed-regulating and clutch (magnetic clutch and hydraulic coupling) speed governing, but the speed ratio of motor speed-regulating is limited, generally is not more than 2; The magnetic clutch transmitting torque is little, and it is little to realize that speed ratio changes; Hydraulic coupling cost height.And planetary speed reducer is generally single speed output, can not satisfy the requirement of speed governing.

Summary of the invention

The utility model provides a kind of transmitting torque big for solving the technical problem that exists in the known technology, can realize the speed reducer of two kinds of different speed ratios in the double speed output of the motion output of same output shaft.

The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of speed reducer of double speed output, comprise casing, planet pinion group, described planet pinion group comprises that the input gear that meshes with sun gear 1 is can be along the sliding gear of input shaft slip, and described sliding gear is provided with the shift fork draw-in groove near on the excircle of input end; Be provided with on the inner circumference of the other end can with the internal tooth of sun gear engagement, be provided with on the excircle and can overlap the external tooth of engagement with fixing tooth, described fixing tooth cover is affixed with the planet carrier of described planet pinion group, shift fork draw-in groove on the described sliding gear excircle is connected to shifting fork mechanism mutually, and described shifting fork mechanism is installed on the described casing.

The utility model can also adopt following technological scheme:

External tooth engagement on the internal tooth of described sliding gear and the described input shaft.

Described shifting fork mechanism comprises and the dragging plate of the shift fork draw-in groove clamping of sliding gear that the described dragging plate and the spacing axis of guide are affixed, and the described spacing axis of guide slidably is connected with described casing, and the described spacing axis of guide is provided with position-limit mechanism I; Described dragging plate and raceway are affixed, described raceway is connected with shift fork by the bearing of installing within it, and described shift fork and pivoted arm are affixed, and described pivoted arm and rotating shaft are affixed, described rotating shaft and handle are affixed, the position-limit mechanism II that described rotating shaft setting is corresponding with position-limit mechanism I.

Described position-limit mechanism I comprises the handle set affixed with described rotating shaft, in the described handle set blind hole is set, the handle limit spring is installed in the described blind hole, described handle limit spring and steel ball join, described steel ball and limiting board join, and are provided with and the corresponding spacing hole of described steel ball on the described limiting board; Described position-limit mechanism II comprises the restraining groove that is arranged at the axis of guide, joins with the corresponding spacing steel ball of described restraining groove and the described axis of guide, and described spacing steel ball and spacing control spring join, and described spacing control spring is installed in the described cabinet.

Advantage and the good effect that the utlity model has are: the utility model adopts the sun gear input, the planetary structure of planet carrier output, installing at its input end can be along the sliding gear of input shaft slip, when requiring to export at a high speed, shifting fork mechanism drives sliding gear and slides along input shaft, sliding gear is slided into and fixing tooth cover position engaged, and input shaft drives planet carrier and rotates, to realize output at a high speed; When requiring low speed high torque output, shifting fork mechanism drives sliding gear and slides into and the sun gear position engaged, sun gear is driven, sun gear drives planet wheel, planet wheel drives planet carrier and causes planet carrier speed ratio output as requested under the effect of internal gear, reach the purpose that drives next stage; Owing to be to drive sliding gear, thereby realize double speed output easily by shifting fork mechanism; Owing to be that sun gear drags three planet wheels simultaneously, so bearing capacity is than big many of general gear, and reliability improved, the volume-diminished of speed reducer, can finish the technical requirements of lifting industry thus preferably.The requirement of especially heavily loaded load and lifting mechanism.

Description of drawings

Fig. 1 is a structure cross-sectional schematic of the present utility model;

Fig. 2 is that the A-A of Fig. 1 is to sectional view;

Fig. 3 is that the B-B of Fig. 2 is to sectional view;

Fig. 4 is that the C-C of Fig. 2 is to sectional view.

Among the figure: 1: output shaft, 2: casing, 3: planet carrier, 3-1: right half dish, 3-2: Zuo Banpan, 4: sun gear, 5: planet wheel, 6: internal gear, 7: the fixing tooth cover, 8: sliding gear, 8-1: shift fork draw-in groove, 9: input shaft, 10: shifting fork mechanism, 10-1: dragging plate, 10-2: the spacing axis of guide, 10-3: the little axle that leads, 10-4: shift fork, 10-5: pivoted arm, 10-6: rotating shaft, 10-7: handle, 10-8: raceway, the 10-9 bearing, 10-10 handle limit spring, 10-11: steel ball, 10-12: limiting board, 10-13: restraining groove, 10-14: spacing steel ball, 10-15: spacing control spring.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1, the utility model is on the basis of planetary speed reducer, further improve, comprise casing 2, planet pinion group, the utility model will become with the input design of gears of sun gear 4 engagements can be along the sliding gear 8 of input shaft 9 slips, and described sliding gear 8 is provided with shift fork draw-in groove 8-1 near on the excircles of input end; Be provided with on the inner circumference of the other end can with the internal tooth of sun gear 4 engagements, be provided with on the excircle and can overlap the external tooth of 7 engagements with fixing tooth, it is affixed that 3-1 is partly coiled on the right side of the planet carrier 3 of described fixing tooth cover 7 and described planet pinion group, shift fork draw-in groove 8-1 on described sliding gear 8 excircles is connected to shifting fork mechanism 10 mutually, and described shifting fork mechanism 10 is installed on the described casing 2.

External tooth engagement on the internal tooth of described sliding gear 8 and the described input shaft 9.

See also Fig. 2, Fig. 3, Fig. 4, described shifting fork mechanism 10 comprises the dragging plate 10-1 with the shift fork draw-in groove 8-1 clamping of sliding gear 8, described dragging plate 10-1 and spacing axis of guide 10-2 are affixed, described spacing axis of guide 10-2 slidably is connected with described casing 2, and described spacing axis of guide 10-2 is provided with position-limit mechanism I; Described dragging plate 10-1 and raceway 10-8 are affixed, described raceway 10-8 is connected with shift fork 10-4 by the bearing 10-9 that installs within it, described shift fork 10-4 and pivoted arm 10-5 are affixed, described pivoted arm 10-5 and rotating shaft 10-6 are affixed, described rotating shaft 10-6 is by affixed with handle set and handle 10-7, and described handle 10-7 is provided with the position-limit mechanism II corresponding with position-limit mechanism I.Described shifting fork mechanism 10 also comprises the little axle of the guiding that be arranged in parallel with described spacing axis of guide 10-2 10-3, and the setting of the little axle of described guiding 10-3 can make described shifting fork mechanism 10 more reliable and more stable.

Described position-limit mechanism I comprises the affixed handle set with described rotating shaft 10-6, in the described handle set blind hole is set, handle limit spring 10-10 is installed in the described blind hole, described handle limit spring 10-10 and steel ball 10-11 join, described steel ball 10-11 and limiting board 10-12 join, and described limiting board 10-12 goes up and is provided with and the corresponding spacing hole of described steel ball 10-11; Described position-limit mechanism II comprises the restraining groove 10-13 that is arranged on the spacing axis of guide 10-2, join with corresponding spacing steel ball 10-14 of described restraining groove 10-13 and described spacing axis of guide 10-2, described spacing steel ball 10-14 and spacing control spring 10-15 join, described spacing control spring 10-15 is installed in the described cabinet 2, compresses described spacing steel ball 10-14.

Working procedure of the present utility model is: external power source will pass to sliding gear 8 by the input shaft 9 that is installed on the casing 2, the position of sliding gear 8 on input shaft 9 is by shifting fork mechanism 10 controls, shifting fork mechanism 10 passes to sliding gear 8 fixing tooth cover 7 and sun gear 4 respectively as required, if pass to sun gear 4, then sun gear 4 is passed to power source and is installed in planet and adds planet wheel 5 on the frame, planet wheel 5 will be passed to planet carrier 3 obtaining torque by the internal gear 6 that is packed on the casing 2, and planet carrier 3 partly coils the purpose that the output shaft 1 of 3-2 is realized to equipment or next stage transferring power by being packed in a left side.If shifting fork mechanism 10 is passed to fixing tooth cover 7 with sliding gear 8 as required, then fixing tooth cover 7 will directly be passed to planet carrier 3 to power, and the purpose that 3-2 realizes to next stage or equipment transferring power by the output shaft 1 that installs is thereon partly coiled on the left side of planet carrier 3.

The action engineering of the utility model shifting fork mechanism is: rotatable handle 10-7, the steel ball 10-11 that handle 10-7 compresses by handle limit spring 10-10 forwards the spacing position of limiting board 10-12 to, promptly want the position of speed governing, simultaneously, handle 10-7 drives rotating shaft 10-6 and rotates, rotating shaft 10-6 drives pivoted arm 10-5 and rotates, pivoted arm 10-5 drives the shift fork 10-4 swing affixed with it, shift fork 10-4 promotes raceway 10-8 swing by the bearing 10-9 that is positioned at raceway 10-8 affixed with it, raceway 10-8 drives the dragging plate 10-1 affixed with it, the spacing axis of guide 10-2 that dragging plate 10-1 drives and dragging plate 10-1 is affixed slides until spacing position, to such an extent as to and the handle position-limit mechanism is dual spacing, reach accurately spacing purpose, the sliding gear 8 of dragging plate 10-1 promotion simultaneously moves along input shaft 9, thereby finishes the engagement of sliding gear 8 and sun gear 4 or fixing tooth cover 7.

The utility model is put the double speed structure through adding, so that range of application is more extensive, this invention is applicable to Mine hoist, mine, metallurgy, cement, building materials, the energy, light industry, chemical industry, peculiar to vessel, Bridge Erector The every field such as tool. It not only has the characteristics such as its volume is little, and transmitting torque is big, and overload capacity is strong, but also Realized efficiently purpose of double speed. Make function more complete, the efficient height, this invention efficient single-stage can reach 98 percent, can realize rotating. Easy for installation, easy to maintenance.

Claims

1. the speed reducer of double speed output, comprise casing, planet pinion group, it is characterized in that: described planet pinion group comprises that the input gear that meshes with sun gear is can be along the sliding gear of input shaft slip, and described sliding gear is provided with the shift fork draw-in groove near on the excircle of input end; Be provided with on the inner circumference of the other end can with the internal tooth of sun gear engagement, be provided with on the excircle and can overlap the external tooth of engagement with fixing tooth, described fixing tooth cover is affixed with the planet carrier of described planet pinion group, shift fork draw-in groove on the described sliding gear excircle is connected to shifting fork mechanism mutually, and described shifting fork mechanism is installed on the described casing.

2. the speed reducer of double speed output according to claim 1 is characterized in that: the external tooth engagement on the internal tooth of described sliding gear and the described input shaft.

3. the speed reducer of double speed output according to claim 1, it is characterized in that: described shifting fork mechanism comprises the dragging plate with the shift fork draw-in groove clamping of sliding gear, the described dragging plate and the spacing axis of guide are affixed, the described spacing axis of guide slidably is connected with described casing, and the described spacing axis of guide is provided with position-limit mechanism I; Described dragging plate and raceway are affixed, described raceway is connected with shift fork by the bearing of installing within it, and described shift fork and pivoted arm are affixed, and described pivoted arm and rotating shaft are affixed, described rotating shaft and handle are affixed, the position-limit mechanism II that described handle setting is corresponding with position-limit mechanism I.

4. the speed reducer of double speed output according to claim 3, it is characterized in that: described position-limit mechanism I comprises the handle set affixed with described rotating shaft, in the described handle set blind hole is set, the handle limit spring is installed in the described blind hole, described handle limit spring and steel ball join, described steel ball and limiting board join, and are provided with and the corresponding spacing hole of described steel ball on the described limiting board; Described position-limit mechanism II comprises the restraining groove that is arranged at the axis of guide, joins with the corresponding spacing steel ball of described restraining groove and the described axis of guide, and described spacing steel ball and spacing control spring join, and described spacing control spring is installed in the described cabinet.

5. according to the speed reducer of claim 3 or 4 described double speed outputs, it is characterized in that: described shifting fork mechanism also comprises the little axle of the guiding that be arranged in parallel with the described spacing axis of guide.