CN113417978A - Power gear shifting gearbox for wheel excavator - Google Patents

Power gear shifting gearbox for wheel excavator Download PDF

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Publication number
CN113417978A
CN113417978A CN202110663646.8A CN202110663646A CN113417978A CN 113417978 A CN113417978 A CN 113417978A CN 202110663646 A CN202110663646 A CN 202110663646A CN 113417978 A CN113417978 A CN 113417978A
Authority
CN
China
Prior art keywords
speed
low
plunger
gear
input shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110663646.8A
Other languages
Chinese (zh)
Inventor
王金铂
刘志才
刘晓
李卫
吴汉彪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hengda Transmission Yucheng Co ltd
Original Assignee
Hengda Transmission Yucheng Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hengda Transmission Yucheng Co ltd filed Critical Hengda Transmission Yucheng Co ltd
Priority to CN202110663646.8A priority Critical patent/CN113417978A/en
Publication of CN113417978A publication Critical patent/CN113417978A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/70—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/082—Planet carriers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means

Abstract

The invention relates to a gearbox, in particular to a power gear shifting gearbox for a wheel excavator. This power gear shift gearbox for wheeled excavator, including the gear box body, installation input shaft and output shaft in the gear box body, characterized by: the front end of the input shaft is connected with an input flange, a low-speed clutch is sleeved on the input shaft, a high-speed clutch is sleeved between the low-speed clutch and a gear box body, a gear ring is arranged between the low-speed clutch and the high-speed clutch, an external spline of the input shaft is meshed with a three-star gear arranged on one side of a three-star frame, and external teeth of the three-star frame are meshed with external teeth of an output shaft. The invention has the beneficial effects that: the gear shifting of the traveling crane can be realized, the gear shifting is more reliable, and the operation is more convenient; the internal structure is compact, and the space of the whole gearbox is greatly utilized.

Description

Power gear shifting gearbox for wheel excavator
(I) technical field
The invention relates to a gearbox, in particular to a power gear shifting gearbox for a wheel excavator.
(II) background of the invention
In recent years, wheel type excavators are increasingly popular with users because of their advantages of high maneuverability, no need of special transportation tools, and the like. At present, however, the gear box of the small and medium-sized wheel type excavator mainly adopts a mechanical gear shifting gear box, or an imported gear box assembly is used or a gear box of a loader is used. The imported gearbox has high configuration cost and low cost performance; the loader gearbox is large in size, multiple in gears and low in efficiency due to mechanical gear shifting, and cannot well meet construction requirements; the ordinary mechanical gear transmission can not shift gears during running, and needs to stop to cut off power and then shift gears, so that the gear shifting efficiency is low.
Disclosure of the invention
The invention provides the power gear shifting gearbox for the wheel excavator, which has the advantages of high cost performance, high gear shifting efficiency and convenience in operation and overcomes the defects of the prior art.
The invention is realized by the following technical scheme:
the utility model provides a power gear shift gearbox for wheeled excavator, includes the gear box body, and installation input shaft and output shaft, characterized by in the gear box body: the front end of the input shaft is connected with an input flange, a low-speed clutch is sleeved on the input shaft, a high-speed clutch is sleeved between the low-speed clutch and a gear box body, a gear ring is arranged between the low-speed clutch and the high-speed clutch, an external spline of the input shaft is meshed with a three-star gear arranged on one side of a three-star frame, and external teeth of the three-star frame are meshed with external teeth of an output shaft.
The low-speed clutch comprises a low-speed plunger, a low-speed clutch plate jacking sleeve, a low-speed spring, a low-speed external tooth braking plate, a low-speed internal tooth friction plate, a low-speed disc spring and a low-speed thrust bearing, wherein one low-speed disc spring is propped against a limiting groove of the input flange, the other low-speed disc spring is propped against a shaft boss at one end of the low-speed plunger in a reverse direction, the other end of the low-speed plunger presses the low-speed clutch plate jacking sleeve through the low-speed thrust bearing, the low-speed spring is arranged between the low-speed clutch plate jacking sleeve and the input shaft and pressed on a shaft shoulder of the input shaft, the low-speed plunger presses the low-speed spring and then presses on the low-speed external tooth braking plate and the low-speed internal tooth friction plate, and the low-speed external tooth braking plate and the low-speed internal tooth friction plate are alternately arranged between the input shaft and the gear ring.
The high-speed clutch comprises a high-speed plunger, an emergency plunger, a plunger stop seat, a high-speed external tooth brake disc, a high-speed internal tooth friction disc, a high-speed washer, a high-speed disc spring and an elastic retainer ring for a high-speed hole, wherein one high-speed disc spring abuts against a limiting groove of an input flange, the other high-speed disc spring reversely abuts against a boss of the high-speed plunger, the emergency plunger is sleeved between the high-speed plunger and the plunger stop seat, the plunger stop seat is sleeved between the emergency plunger and a gear box body, the high-speed external tooth brake disc and the high-speed internal tooth friction disc are alternately arranged between a gear ring and the gear box body, the high-speed washer is arranged at the bottom of the high-speed external tooth brake disc and the high-speed internal tooth friction disc, and the high-speed washer is arranged on the elastic retainer ring for the high-speed hole.
And a taper bearing is arranged on the other side of the three-star frame and is locked through a first pressing plate.
The external spline of the input shaft is connected with the internal spline of the lubricating oil pump, and the lubricating oil pump is arranged on the gear box body.
And transmission shaft connecting flanges are fixed at two ends of the output shaft respectively through second pressing plates.
One end of the output shaft is connected with the output flange through the deep groove ball bearing, and the other end of the output shaft is connected with the gear box body through the deep groove ball bearing.
And framework oil seals are arranged between the gear box body and the transmission shaft connecting flange and between the output flange and the transmission shaft connecting flange.
The invention has the beneficial effects that: the gear shifting of the traveling crane can be realized, the gear shifting is more reliable, and the operation is more convenient; the internal structure is compact, and the space of the whole gearbox is greatly utilized.
(IV) description of the drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention;
in the figure, 1 gear box body, 2 input shaft, 3 output shaft, 4 input flange, 5 low speed clutch, 51 low speed plunger, 52 low speed clutch plate top sleeve, 53 low speed spring, 54 low speed external tooth brake plate, 55 low speed internal tooth friction plate, 56 low speed disc spring, 57 low speed thrust bearing, 6 high speed clutch, 61 high speed plunger, 62 emergency plunger, 63 plunger stop seat, 64 high speed external tooth brake plate, 65 high speed internal tooth friction plate, 66 high speed washer, 67 high speed disc spring, 68 high speed hole circlip, 7 gear ring, 8 three-star frame, 9 three-star gear, 10 taper bearing, 11 first pressure plate, 12 lubricating oil pump, 13 second pressure plate, 14 transmission shaft connecting flange, 15 deep groove ball bearing, 16 output flange, 17 skeleton oil seal, 18 UN seal ring, 19O type rubber seal ring.
(V) detailed description of the preferred embodiments
The attached drawing is an embodiment of the invention. The embodiment comprises a gear box body 1, an input shaft 2 and an output shaft 3 are installed in the gear box body 1, the front end of the input shaft 2 is connected with an input flange 4, a low-speed clutch 5 is sleeved on the input shaft 2, a high-speed clutch 6 is sleeved between the low-speed clutch 5 and the gear box body 1, a gear ring 7 is arranged between the low-speed clutch 5 and the high-speed clutch 6, an external spline of the input shaft 2 is meshed with a three-star gear 9 installed on one side of a three-star frame 8, and external teeth of the three-star frame 8 are meshed with external teeth of the output shaft 3. The low-speed clutch 5 comprises a low-speed plunger 51, a low-speed clutch plate top sleeve 52, a low-speed spring 53, a low-speed external tooth brake plate 54, a low-speed internal tooth friction plate 55, a low-speed disc spring 56 and a low-speed thrust bearing 57, wherein one low-speed disc spring 56 is abutted against a limiting groove of the input flange 4, the other low-speed disc spring 56 is reversely abutted against a boss at one end of the low-speed plunger 51, the other end of the low-speed plunger 51 presses the low-speed clutch plate top sleeve 52 through the low-speed thrust bearing 57, the low-speed spring 53 is arranged between the low-speed clutch plate top sleeve 52 and the input shaft 2, the low-speed spring 53 is pressed on a shaft shoulder of the input shaft 2, the low-speed plunger 51 presses the low-speed spring 53 and then presses on the low-speed external tooth brake plate 54 and the low-speed friction plate 55, and the low-speed external tooth brake plate 54 and the low-speed internal tooth friction plate 55 are alternately arranged between the input shaft 2 and the gear ring 7. The high-speed clutch 6 comprises a high-speed plunger 61, an emergency plunger 62, a plunger stop seat 63, a high-speed external tooth brake disc 64, a high-speed internal tooth friction disc 65, a high-speed washer 66, a high-speed disc spring 67 and a high-speed hole elastic retainer ring 68, wherein one high-speed disc spring 67 abuts against a limiting groove of the input flange 4, the other high-speed disc spring 67 reversely abuts against a boss of the high-speed plunger 61, the emergency plunger 62 is sleeved between the high-speed plunger 61 and the plunger stop seat 63, the plunger stop seat 63 is sleeved between the emergency plunger 63 and the gear box body 1, the high-speed external tooth brake disc 64 and the high-speed internal tooth friction disc 65 are alternately arranged between the gear ring 7 and the gear box body 1, the high-speed washer 66 is arranged at the bottoms of the high-speed external tooth brake disc 64 and the high-speed internal tooth friction disc 65, and the high-speed hole elastic retainer ring 68 is arranged on the high-speed hole elastic retainer ring 66. The other side of the three-star frame 8 is provided with a taper bearing 10, and the taper bearing 10 is locked through a first pressing plate 11. The external spline of the input shaft 2 is connected with the internal spline of the lubricating oil pump 12, and the lubricating oil pump 12 is installed on the gear box body 1. And transmission shaft connecting flanges 14 are respectively fixed at two ends of the output shaft 3 through second pressing plates 13. One end of the output shaft 3 is connected with an output flange 16 through a deep groove ball bearing 15, and the other end of the output shaft is connected with the gear box body 1 through the deep groove ball bearing 15. Framework oil seals 17 are arranged between the gear box body 1 and the transmission shaft connecting flange 14 and between the output flange 16 and the transmission shaft connecting flange 14.
The power gear-shifting gearbox for the wheel excavator is adopted, the high-speed internal tooth friction plate 65 of the high-speed clutch 6 and the low-speed external tooth brake plate 54 of the low-speed clutch 5 are static relative to the gear ring 7, the gear ring 7 is arranged on the input shaft 2, and a bearing seat and a deep groove ball bearing are arranged between the gear ring 7 and the input shaft 2. A thrust bearing is arranged between the shaft shoulder of the input shaft 2 and the three-star carrier 8, and the external spline end of the input shaft 2 penetrates through the inner hole of the three-star carrier 8. The high-speed clutch 6 and the low-speed clutch 5 are released through hydraulic oil, and the transmission path of torque is changed, so that output of different speed ratios is realized. The high-speed external-tooth brake plate 64 of the high-speed clutch 6 is stationary with respect to the gear housing 1, and the low-speed internal-tooth friction plate 55 is stationary with respect to the input shaft 2. The hydraulic motor is in power connection with the input shaft 2 through an input flange 4, two UN sealing rings 18 are arranged between the gear box body 1 and the high-speed plunger 61, two UN sealing rings 18 are arranged between the low-speed plunger 51 and the high-speed plunger 61, low-speed pilot oil enters an oil cavity between the high-speed plunger 61 and the low-speed plunger 51 through an oil duct of the box body and an oil duct on the high-speed plunger 61, so that the low-speed clutch 5 is opened, the high-speed clutch 6 is pressed and enters a low-speed mode, at the moment, the low-speed internal tooth friction plate 55 rotates along with the input shaft 2, and an external spline of the input shaft 2 transmits torque to the output shaft 3 through a three-star gear 9 and a three-star frame 8; a UN sealing ring 18 is arranged between the inner circle of the emergency plunger 62 and the high-speed plunger 61, high-speed pilot oil enters an oil cavity between the high-speed plunger 61 and the emergency plunger 62 through an oil passage of the box body, so that the high-speed clutch 6 is opened, the low-speed clutch 5 is compressed, the high-speed mode is achieved, and the input shaft 2 transmits torque to the output shaft 3 through the gear ring 7, the three-star gear 9 and the three-star frame 8. O-shaped rubber sealing rings 19 are arranged between the plunger stop seat 63 and the gear box body 1, between the emergency plunger 62 and the gear box body 1 and between the plunger stop seat 63 and the emergency plunger 62, after lubricating grease enters an oil cavity through a box body oil duct, the emergency plunger 62 is opened, and then the high-speed clutch 6 and the low-speed clutch 5 are opened simultaneously, so that the parking brake mode is released.
The power gear shifting gearbox for the wheel excavator adopts a negative control mode and shifts gears by hydraulic power; two gears, front and back dual output, double-axle drive; convenient operation and low cost. The gear box can realize power gear shifting and can complete gear shifting action under the state of not cutting off power transmission; all gears in the gearbox are always in a meshed state, and the torque transmission direction is controlled through the high-speed clutch and the low-speed clutch, so that different speed ratio outputs are realized. All functional parts of gearbox all can be split alone, are favorable to overall assembly and maintenance change. The power of the gearbox is directly input by the hydraulic motor, a transition part is not arranged between the input end and the hydraulic motor, the hydraulic motor is directly connected with an internal spline of the input shaft, the centering error can be reduced, the transmission precision is improved, larger load is borne, and the stress is more uniform. The clutch is arranged on the input shaft, so that the engagement of different gears is controlled through the clutch, the conversion of gears is realized, the output of different speed ratios is realized, the gear shifting is more reliable, and the operation is more convenient; and the internal structure is compact, and the space of the whole gearbox is greatly utilized. The built-in normal close formula parking brake for the very big promotion of the degree of safety of this gearbox, when the gearbox stop work, the stopper pins the input shaft, plays the effect of parking braking.

Claims (8)

1. The utility model provides a power gear shift gearbox for wheeled excavator, includes gear box body (1), installation input shaft (2) and output shaft (3) in gear box body (1), characterized by: input flange (4) is connected to input shaft (2) front end, the cover is equipped with low-speed clutch (5) on input shaft (2), suit high-speed clutch (6) between low-speed clutch (5) and gear box (1), be equipped with ring gear (7) between low-speed clutch (5) and high-speed clutch (6), input shaft (2) external splines and install the meshing of three star gear (9) on three star frame (8) one side mutually, three star frame (8) external tooth and output shaft (3) external tooth mesh mutually.
2. The power shift transmission for a wheeled excavator according to claim 1, wherein: the low-speed clutch (5) comprises a low-speed plunger (51), a low-speed clutch plate ejection sleeve (52), a low-speed spring (53), a low-speed external gear brake plate (54), a low-speed internal gear friction plate (55), a low-speed disc spring (56) and a low-speed thrust bearing (57), wherein one low-speed disc spring (56) abuts against a limiting groove of the input flange (4), the other low-speed disc spring (56) abuts against a boss at one end of the low-speed plunger (51) in a reverse direction, the other end of the low-speed plunger (51) presses the low-speed clutch plate ejection sleeve (52) through the low-speed thrust bearing (57), the low-speed spring (53) is arranged between the low-speed clutch plate ejection sleeve (52) and the input shaft (2), the low-speed spring (53) presses against a shaft shoulder of the input shaft (2), the low-speed plunger (51) presses the low-speed spring (53) and then presses against the low-speed external gear internal gear brake plate (54) and the low-speed friction plate (55), a low-speed external-tooth brake plate (54) and a low-speed internal-tooth friction plate (55) are alternately installed between the input shaft (2) and the ring gear (7).
3. The power shift transmission for a wheeled excavator according to claim 1, wherein: the high-speed clutch (6) comprises a high-speed plunger (61), an emergency plunger (62), a plunger stop seat (63), a high-speed external tooth brake disc (64), a high-speed internal tooth friction disc (65), a high-speed washer (66), a high-speed disc spring (67) and an elastic check ring (68) for a high-speed hole, wherein one high-speed disc spring (67) abuts against a limiting groove of the input flange (4), the other high-speed disc spring (67) reversely abuts against a boss of the high-speed plunger (61), the emergency plunger (62) is sleeved between the high-speed plunger (61) and the plunger stop seat (63), the plunger stop seat (63) is sleeved between the emergency plunger (63) and the gear box body (1), the high-speed external tooth brake disc (64) and the high-speed internal tooth friction disc (65) are alternately arranged between the gear ring (7) and the gear box body (1), and the high-speed external tooth brake disc (64) and the high-, a high-speed washer (66) is mounted on the circlip (68) for the high-speed hole.
4. The power shift transmission for a wheeled excavator according to claim 1, wherein: and a taper bearing (10) is arranged on the other side of the three-star frame (8), and the taper bearing (10) is locked through a first pressing plate (11).
5. The power shift transmission for a wheeled excavator according to claim 1, wherein: the external spline of the input shaft (2) is connected with the internal spline of the lubricating oil pump (12), and the lubricating oil pump (12) is installed on the gear box body (1).
6. The power shift transmission for a wheeled excavator according to claim 1, wherein: and transmission shaft connecting flanges (14) are respectively fixed at two ends of the output shaft (3) through second pressing plates (13).
7. The power shift transmission for a wheeled excavator according to claim 1, wherein: one end of the output shaft (3) is connected with the output flange (16) through a deep groove ball bearing (15), and the other end of the output shaft is connected with the gear box body (1) through the deep groove ball bearing (15).
8. The power shift transmission for a wheeled excavator according to claim 1, wherein: and framework oil seals (17) are arranged between the gear box body (1) and the transmission shaft connecting flange (14) and between the output flange (16) and the transmission shaft connecting flange (14).
CN202110663646.8A 2021-06-16 2021-06-16 Power gear shifting gearbox for wheel excavator Pending CN113417978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110663646.8A CN113417978A (en) 2021-06-16 2021-06-16 Power gear shifting gearbox for wheel excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110663646.8A CN113417978A (en) 2021-06-16 2021-06-16 Power gear shifting gearbox for wheel excavator

Publications (1)

Publication Number Publication Date
CN113417978A true CN113417978A (en) 2021-09-21

Family

ID=77788595

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110663646.8A Pending CN113417978A (en) 2021-06-16 2021-06-16 Power gear shifting gearbox for wheel excavator

Country Status (1)

Country Link
CN (1) CN113417978A (en)

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