CN201875065U

CN201875065U - Marine gear box assembly with automatic pressing device

Info

Publication number: CN201875065U
Application number: CN2010205688424U
Authority: CN
Inventors: 俞建中
Original assignee: HANGZHOU LONGTU MACHINERY CO Ltd
Current assignee: HANGZHOU LONGTU MACHINERY CO Ltd
Priority date: 2010-10-19
Filing date: 2010-10-19
Publication date: 2011-06-22
Anticipated expiration: 2020-10-19

Abstract

The utility model relates to a gear box in the ship mechanical field, particularly to a marine gear box assembly with an automatic pressing device. The marine gear box assembly mainly solves the defects that a mechanical clutch in the prior art has big control force, poor force system, small overload capacity and difficult gap adjustment, and can't meet actual requirements. Technical problems as positive-negative turning-dropping, unsmooth connection, slipping under rated condition, difficulty in adjusting wear gap of friction plate and overlarge control force are frequently encountered during practical application process. The marine gear box assembly comprises a housing, wherein an input shaft and driven gears are arranged in the housing, an output shaft is connected in the driven gears in a penetrating way, a friction plate group, pressurizing discs and a spline seat are arranged on the output shaft, and a clutch slip ring is combined on the circumference of the spline seat; compressing pieces are arranged on the opposite axial end surfaces of the two driven gears respectively; and two pressurizing discs are arranged on the two sides of the spline seat respectively, pressurizing grooves are arranged on the opposite axial end surfaces of the spline seat and the pressurizing discs respectively, and pressurizing steel balls are arranged in the pressurizing grooves respectively.

Description

The marine gear box assembly of band automatic compacting device

Technical field

The utility model relates to the gear-box in a kind of ship machinery field, especially relates to a kind of marine gear box assembly with automatic compacting device.

Background technique

In the gearbox assembly of the boats and ships below 100 horsepowers, mainly realize clockwise and anticlockwise by friction clutch.Friction plate in the clutch is to produce frictional force by axial pressure, thereby forms the friction torque of transmitting torque.When starting, the moment of inertia of all driven members is very big to the ability influence of clutch transmission torque, and especially under the situation of high speed discrepancy, the driven member inertia of joint is big, and inertia load is big more.In clutch's jointing process, if require engaging time short, clutch then must transmit bigger moment of torsion, correspondingly needs to strengthen the clutch size; If select only to satisfy the clutch of operating load, then clutch can seriously skid or the engaging time prolongation.

The hold down gag of mechanical clutch is generally the hold down gag that adopts steel ball or lever pressure structure in the prior art.Impacting force is a constant in the working procedure, and it is tried to achieve by maximum load, and when working under being lower than the state of maximum load, impacting force is superfluous, thereby has reduced the efficient and the life-span of transmission; When surpassing maximum load, impacting force seems again inadequately, causes that friction plate skids, and produces abrasion, influences the proper functioning of clutch.

Because the restriction of inherent structure, though carried out a lot of improvement, but (as: tangential lever compression type friction clutch, steel ball compression type friction clutch etc.) exist still that steering force is big, power is that property is poor, overload capacity is little, shortcomings such as difficulty are adjusted in the gap in some commonly used mechanical clutches, are difficult to satisfy actual demand.Usually occur in actual application: situation such as skid, the friction disc wear gap is difficult for adjusting, steering force is excessive is taken off, is connect under smooth, the declared working condition in clockwise and anticlockwise.

The model utility content

The utility model provides a kind of marine gear box assembly with automatic compacting device, it mainly is to solve to have in the existing in prior technology mechanical clutch that steering force is big, power is that property is poor, overload capacity is little, shortcomings such as difficulty are adjusted in the gap, is difficult to satisfy actual demand.In actual application, usually occur clockwise and anticlockwise take off, connect under smooth, the declared working condition skid, the friction disc wear gap is difficult for adjusting, steering force is excessive etc. technical problem.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:

The marine gear box assembly of band automatic compacting device of the present utility model, comprise housing, housing is provided with the driving cam assembly parts, be connected with operating handle on the driving cam assembly parts, be provided with input shaft in the housing, input shaft is engaged with driven gear, and cross-under has output shaft in the driven gear, be socketed with a plurality of friction plate groups, pressurization disk and spline fitting on the output shaft, the spline fitting outer periphery are combined with axially displaceable clutch slip ring; Driven gear is two, and relative axial end is provided with compressing member on two driven gears; The spline fitting both sides are respectively equipped with a pressurization disk, are respectively equipped with the pressurized tank that can be connected mutually on the spline fitting axial end relative with pressurization disk, are provided with the pressurization steel ball in the pressurized tank.By stirring clutch slip ring, the separation of control friction plate group with cooperate, cooperating in conjunction with the sense of rotation of pressurization disk and spline fitting and steel ball and pressurized tank again, can produce bigger impacting force, can realize again axially compressing automatically and automatic compensate for wear gap, binding characteristic, active redundancy characteristic, the characteristic of pressurizeing is better automatically.

As preferably, described compressing member is a belleville spring.Structure combines roll pressure structure and belleville spring of steel ball, thereby forms a kind of friction clutch automatic compacting device of combined type.

As preferably, between described two groups of pressurization disk and the hold down gag friction plate group is arranged respectively, the friction plate group comprises left friction plate and right friction plate, and left friction plate is connected on the driven gear, and right friction plate is connected on the pressurization disk; Output shaft is divided into driving shaft and driven shaft, and driving shaft, driven shaft all are socketed with driven gear, a plurality of friction plate group, pressurization disk, and spline fitting is fixed on the driven shaft.

As preferably, described clutch slip ring is provided with along the equally distributed spiral chute of circumference.

As preferably, described pressurized tank one end is shallow, an end is dark, the pressurized tank of spline fitting and pressurization disk that direction is set is opposite.The wedging angle (angle) of pressurized tank shallow end and high-end formation on spiral fluted helix angle on the dependence clutch slip ring and the pressurization disk, has the function that compresses automatically with automatic friction compensation pad wear gap when being implemented in jointing state, steering force is little, has given prominence to preferably engagement characteristics, active redundancy characteristic, the characteristic of pressurizeing automatically.

As preferably, the dicyclo spring connects described two pressurization disk on the axial end in opposite directions by being arranged on.

As preferably, be evenly distributed with a plurality of locating studs on the radial end face of described spline fitting, be used for cooperating with clutch slip ring.

As preferably, described driven gear by needle bearing respectively with driving shaft and driven shaft socket.When clutch slip ring was positioned at the neutral position, friction plate was in idling conditions, not transmitting torque.

As preferably, described input shaft, output shaft all and be provided with tapered roller bearing between the housing are convenient to the rotation of input shaft, output shaft.

Therefore, the utility model make clutch take off, connect the action steering force little, has the function that compresses automatically with automatic compensate for wear gap, the design at wedging angle on spiral chute helix angle on the distinctive clutch slip ring and the pressurization disk, can increase with load, increase the axial pressing force of friction plate, transferring power is reliable, and is simple and reasonable for structure.

Description of drawings

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

Fig. 2 is a side-looking structural representation of the present utility model;

Fig. 3 is the cross-sectional view of the utility model automatic compacting device;

Fig. 4 is the side-looking structural representation of the utility model automatic compacting device;

Fig. 5 is the side-looking structural representation of the clutch slip ring in the utility model;

Fig. 6 is the cross-sectional view of clutch slip ring in the utility model;

Fig. 7 is a side-looking structural representation of pressurization disk in the utility model.

Component, position and numbering among the figure: housing 1, driving cam assembly parts 2, operating handle 3, input shaft 4, driven gear 5, friction plate group 6, left friction plate 6a, right friction plate 6b, pressurization disk 7, spline fitting 8, clutch slip ring 9, tapered roller bearing 10, pressurized tank 11, pressurization steel ball 12, belleville spring 13, driving shaft 14, driven shaft 15, spiral chute 16, needle bearing 17, locating stud 18.

Embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: the marine gear box assembly of the band automatic compacting device of this example, as Fig. 1, Fig. 2, a housing 1 is arranged, housing is provided with driving cam assembly parts 2, be connected with operating handle 3 on the driving cam assembly parts, be provided with input shaft 4 in the housing, input shaft is engaged with driven gear 5, as Fig. 3, Fig. 4, Fig. 5, Fig. 7, two driven gears, a plurality of friction plate group 6, pressurization disk 7 are socketed in respectively on driving shaft 14 and the driven shaft 15 by needle bearing 17.Also be connected with spline fitting 8 on the driven shaft, the spline fitting outer periphery are combined with axially displaceable clutch slip ring 9, and relative axial end is connected with a pair of belleville spring 13 respectively on two driven gear; The spline fitting both sides are respectively equipped with a pressurization disk 7, are respectively equipped with the pressurized tank 11 that can be connected mutually on the spline fitting axial end relative with pressurization disk, are provided with pressurization steel ball 12 in the pressurized tank 11; Between two groups of pressurization disk and the belleville spring friction plate group 6 is arranged respectively, the friction plate group comprises left friction plate 6a and right friction plate 6b, and left friction plate is connected on the driven gear 5, and right friction plate is connected on the pressurization disk 7.Three spiral chutes 16 are evenly distributed on the circumference of clutch slip ring 9.Pressurized tank one end is shallow, an end is dark, and it is opposite that the pressurized tank of spline fitting and pressurization disk is provided with direction.Be evenly distributed with three locating studs 18 on the radial end face of spline fitting, interior outside friction disc can be used steel, copper-base powder metallurgy casting.

As shown in Figure 6, the helix angle of spiral chute 16 is 9 ゜ 45 ' on the clutch slip ring 9.

As shown in Figure 7, be the position that is provided with of pressurized tank 11 on the pressurization disk 7, its wedging angle is 30 ゜.

During work, left friction plate 6a, right friction plate 6b work to drive driving shaft 14, driven shaft 15 clockwise and anticlockwise.Clutch slip ring 9 can be positioned at the neutral position, is moved to the left right friction plate 6b is compressed, and moving right makes left friction plate 6a compress three positions.

Clutch is in separated state: clutch slip ring 9 is in the neutral position, clutch slip ring 9 is by 18 location of 3 locating studs in the spline fitting 8 that is fixed on the driven shaft 15, when driven gear 5 is rotated by the driving gear drive of input shaft 4, left side friction plate 6a, right friction plate 6b do not compress, back-up roller needle bearing 17 idle running on the driven shaft 15, and pressurization disk 7 is not all rotated with spline fitting 8, driven shaft 15.

It is fashionable that clutch is just being transferred, by operating mechanism clutch slip ring 9 is moved right, clutch slip ring 9 drives spiral chute 16 guiding of pressurization disk on 7 along its and compresses left friction plate 6a, right friction plate 6b, the belleville spring 13 that is fixed on the driven gear 5 and left friction plate 6a, right friction plate 6b and pressurization disk 7 are combined, pressurization disk 7 and spline fitting 8 drive wedging by pressurization steel ball 12, rotate together thereby drive driven shaft 15, at this moment clutch is in jointing state.Along with the increase of load, the impacting force between left friction plate 6a, the right friction plate 6b also increases, and guarantees the transmission of moment of torsion.Clutch slip ring 9 is moved to the left, and principle too realizes counter-rotating.

Wedging angle on the helix angle of the spiral chute 16 on the utility model dependence clutch slip ring 9 and the pressurization disk 7, when jointing state, has the function that compresses automatically with automatic friction compensation pad wear gap, steering force is little, has given prominence to preferably engagement characteristics, active redundancy characteristic, the characteristic of pressurizeing automatically.

Engagement characteristics refers to: under static high slip condition, the utility model combines with spline fitting 8 by pressurization disk 7, the wedge action of pressurization steel ball 12 temporarily loses, thereby enter the positive engagement state, the realization transmitting torque is big, engaging time is short, and does not produce and skid, thereby does not need to strengthen the size of clutch.

When proper functioning, rely on compressing mutually after the contact between joint element, the friction plate, utilize the frictional force that compresses the back generation to come transmitting torque, enter the flexible engagement state, reduce mechanical shock, working state is steady.Normal working of the present utility model is a flexible engagement.

The active redundancy characteristic: clutch should possess certain functional reliability is arranged in transmitting torque.

Therefore, in clutch designs, need to select suitable active redundancy factor beta to be guaranteed.The performance of the size of β value and prime mover, working machine and the factors such as structural type of clutch are relevant.The β value is too small, will prolong engaging time, makes friction element overheated, quickens friction; The β value is too big, and the joint rigidity of clutch is increased, and produces great dynamic load in system, and the peak load when changing gear can reach 3-5 times of rated load.So automatic pressing friction clutch at initial impaction state, applies impacting force to involutory belleville spring in advance by compressing the location, between friction plate, produce enough pressure; When real work, increase with working load, the also corresponding increase of the impacting force between the friction plate makes the dynamic characteristic of clutch be in perfect condition.

Automatically the pressurization characteristic refers to: during joint, power transfer route by clutch slip ring 9, pressurization disk 7, pressurization steel ball 12 and spline fitting 8, make clutch produce pressurization automatically, the positive pressure of friction plate increases, impacting force increases with the increase of load automatically, guarantees reliable operation under the load rating by choosing suitable β value, guarantees that clutch is in work under the comparatively ideal state all the time, its advantage is that commutation process does not have impact, noise free, is quick on the draw, compact structure.

The utility model can be used as the quick reversing arrangement in the speed-changing gear box, and commutating speed is fast, steering force is little, transmitting torque is reliable.

The above only is a specific embodiment of the utility model, but structure characteristic of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and variation of being done or modification all are encompassed among the claim of the present utility model.

Claims

1. marine gear box assembly with automatic compacting device, comprise housing (1), housing is provided with driving cam assembly parts (2), be connected with operating handle (3) on the driving cam assembly parts, be provided with input shaft (4) in the housing (1), it is characterized in that described input shaft (4) is connected with automatic compacting device, automatic compacting device includes the driven gear (5) with the input shaft engagement, cross-under has output shaft in the driven gear, be socketed with a plurality of friction plate groups (6) on the output shaft, pressurization disk (7) and spline fitting (8), the spline fitting outer periphery are combined with axially displaceable clutch slip ring (9); Driven gear is two, and relative axial end is provided with compressing member on two driven gears; The spline fitting both sides are respectively equipped with a pressurization disk, are respectively equipped with the pressurized tank (11) that can be connected mutually on the spline fitting axial end relative with pressurization disk, are provided with pressurization steel ball (12) in the pressurized tank.

2. the marine gear box assembly of band automatic compacting device according to claim 1 is characterized in that described compressing member is belleville spring (13).

3. the marine gear box assembly of band automatic compacting device according to claim 2, it is characterized in that a friction plate group (6) is respectively arranged between described two groups of pressurization disk (7) and the hold down gag, the friction plate group comprises left friction plate (6a) and right friction plate (6b), left side friction plate (6a) is connected on the driven gear (5), and right friction plate (6b) is connected on the pressurization disk (7); Output shaft is divided into driving shaft (14) and driven shaft (15), and driving shaft, driven shaft all are socketed with driven gear (5), a plurality of friction plate group (6), pressurization disk (7), and spline fitting (8) is fixed on the driven shaft.

4. according to the marine gear box assembly of claim 1 or 2 or 3 described band automatic compacting device, it is characterized in that described clutch slip ring (9) is provided with along the equally distributed spiral chute of circumference (16).

5. according to the marine gear box assembly of claim 1 or 2 or 3 described band automatic compacting device, it is characterized in that described pressurized tank (11) one ends are shallow, an end is dark, spline fitting (8) and both pressurized tank of pressurization disk (7) that direction is set is opposite.

6. according to the marine gear box assembly of claim 1 or 2 or 3 described band automatic compacting device, it is characterized in that being evenly distributed with a plurality of locating studs (18) on the radial end face of described spline fitting (8).

7. the marine gear box assembly of band automatic compacting device according to claim 3, it is characterized in that described driven gear (5) by needle bearing (17) respectively with driving shaft (14) and driven shaft (15) socket.

8. according to the marine gear box assembly of claim 1 or 2 or 3 described band automatic compacting device, it is characterized in that described input shaft (4), output shaft are all and be provided with tapered roller bearing (10) between the housing (1).