CN218818081U

CN218818081U - Power takeoff assembly with forced lubrication

Info

Publication number: CN218818081U
Application number: CN202223593973.XU
Authority: CN
Inventors: 张海波; 周岳全
Original assignee: Qijiang Gear Transmission Co Ltd
Current assignee: Qijiang Gear Transmission Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-04-07
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to an engine power takeoff field discloses a take force takeoff assembly of forced lubrication, which comprises a housin, bearing group and input shaft and the output shaft of setting in the casing, the cover is equipped with input gear on the input shaft, the input shaft can drive input gear and rotate, the cover is equipped with output gear on the output shaft, input gear and output gear meshing transmission, bearing group is including first bearing and second bearing, the casing is including the preceding shell that connects gradually, backshell and end cover, input shaft one end is connected and synchronous rotation with the gearbox jackshaft, the input shaft other end rotates with the backshell through first bearing and is connected, the both ends of output shaft are passed through the second bearing and are connected with preceding shell and backshell rotation respectively, the inlet port has been seted up on the end cover, the backshell is opened and is equipped with the backward flow hole that makes lubricating oil flow back to the gearbox.

Description

Take force takeoff assembly of force-feed lubrication

Technical Field

The utility model relates to an engine power takeoff field, concretely relates to take force-feed lubrication's power takeoff assembly.

Background

The power takeoff is one or more groups of speed changing gears, also called power output devices, and generally consists of a gear box, a clutch and a controller, and is connected with a low-gear or an auxiliary box output shaft of the gear box to output power to an external working device, such as a lifting pump and the like. The existing power takeoff and a transmission are usually lubricated by using shared oil, an oil cavity of the power takeoff is relatively closed, splash lubrication is carried out on engineering machinery working for a long time such as a crane, the heat load is large, the temperature rise is too fast, the lubrication of the power takeoff is insufficient, the heat dissipation of an internal gear and a bearing structure cannot meet the use requirement, the oil temperature in a box rises in a short time, and particularly the upper left power takeoff is more serious. Under the long-time high-power working condition, the power takeoff is abnormally damaged such as deformed due to insufficient lubrication, and the service life is short. Therefore, great potential safety hazard exists, and a power takeoff with good lubricating effect needs to be designed.

The intermediate shaft is a shaft in the automobile gearbox, the shaft and the gear are integrated, the shaft is used for connecting the first shaft and the second shaft, and the first shaft and the second shaft are selectively meshed with different gears through the transformation of a gear shifting lever, so that the second shaft can output different rotating speeds, steering directions and torques.

SUMMERY OF THE UTILITY MODEL

The utility model provides a take force takeoff assembly of force-feed lubrication to a lubricated effectual and job stabilization's force takeoff is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a take force takeoff assembly of force-feed lubrication, which comprises a housin, bearing group and input shaft and the output shaft of setting in the casing, the cover is equipped with input gear on the input shaft, the input shaft can drive input gear and rotate, the cover is equipped with output gear on the output shaft, input gear and output gear meshing transmission, bearing group is including first bearing and second bearing, the casing is including the preceding shell that connects gradually, backshell and end cover, input shaft one end and gearbox intermediate shaft are connected and synchronous rotation, the input shaft other end rotates with the backshell through first bearing and is connected, the both ends of output shaft are passed through the second bearing and are rotated with preceding shell and backshell respectively and be connected, the inlet port has been seted up on the end cover, the backshell is seted up and is made the backward flow hole in the gearbox of lubricating oil backward flow.

The beneficial effect of this scheme does:

the lubrication effect and the temperature of the power takeoff can be ensured. This technical scheme is through having seted up the inlet port on the end cover, the backshell is seted up and is made the backward flow hole of lubricating oil backward flow in the gearbox, make power takeoff and gearbox intercommunication, make lubricating oil can get into inside the power takeoff through the inlet port, backward flow to the gearbox in the power takeoff again, inside gear and axle sleeve heat up rapidly during the long-time during operation of power takeoff, compare in the lubrication of splashing, this technical scheme can better satisfy the service behavior of power takeoff, guarantee the job stabilization nature of power takeoff, lubricating oil can flow back to the gearbox after lubricating the power takeoff, make the temperature of power takeoff and gearbox comparatively unanimous, the life of power takeoff has been prolonged.

Preferably, as an improvement, still include the structure of shifting, the structure of shifting includes the shift fork of shifting, the sliding sleeve, third bearing and spline group, input gear passes through third bearing and input shaft swivelling joint, spline group includes first spline and second spline, first spline sets up the surface that is close to one side of input shaft at the input shaft, the second spline sets up the one side that is close to the input shaft at input gear, the sliding sleeve inner circle is equipped with the third spline with spline group complex, the sliding sleeve cover is established on first spline and with spline group sliding connection, the shift fork cover is established and can be driven the sliding sleeve and slide on the sliding sleeve. Through the arrangement, the power takeoff is convenient to control, when the sliding sleeve is sleeved on the second spline, the middle shaft drives the input shaft to rotate, the input shaft enters an idle state because the input gear is in rotating connection with the input shaft through the third bearing, the input gear cannot rotate at the moment, and when the shifting fork drives the sliding sleeve to slide, the sliding sleeve is sleeved on the first spline and the second spline at the same time, the input gear is driven to rotate synchronously through rotation of the input shaft.

Preferably, as an improvement, a spacer is arranged between the input gear and the first bearing, and a stop ring is sleeved on the outer surface of the first bearing. By arranging the space ring, the input gear is prevented from contacting with the first bearing in the high-speed operation process, so that the input gear and the first bearing are prevented from being abraded due to friction, and the working stability of the device is prevented from being influenced; the first bearing can be limited by the stop ring, and the first bearing is prevented from shifting.

Preferably, as an improvement, the mechanical transmission device further comprises a cylindrical pin, a first groove is formed in the end face, close to the intermediate shaft, of the input shaft, an inner spline is arranged inside the first groove, one end of the input shaft can be inserted into the first groove, an outer spline matched with the inner spline is arranged on the outer surface of the input shaft, second grooves are formed in the centers of the opposite surfaces of the intermediate shaft and the input shaft, and the cylindrical pin can be inserted into the second grooves. Through the setting, the jackshaft is connected and is driven through the spline with the input shaft, and transmission performance is good, and dismantles easy maintenance, has reduced follow-up maintenance cost, has still set up the cylindric lock and has inserted in the second groove, when installing the power takeoff on the jackshaft on the one hand, the cylindric lock can play the direction and to the effect in two axle centers, and on the other hand is at the power takeoff during operation, and the cylindric lock can play the effect of support for power takeoff work is more stable.

Preferably, as an improvement, the first bearing is a cylindrical roller bearing, the second bearing is a tapered roller bearing, and the third bearing is a needle roller bearing. The radial space of the input gear and the input shaft is saved by arranging the third bearing as a needle bearing; the tapered roller bearing is arranged, the bearing capacity of the tapered roller bearing is large, the output torque is large, and the tapered roller bearing is applied to a power takeoff and can improve the working stability and the service life of the power takeoff; the cylindrical roller bearing has large radial bearing capacity, can bear heavy load and impact load, and can prolong the working stability of the device.

Preferably, as an improvement, the front shell, the rear shell and the end cover are connected in sequence through bolts, a gasket is arranged between the front shell and the rear shell, and an end cover gasket is arranged between the rear shell and the end cover. Through the setting, guarantee that power takeoff inside has good leakproofness, and then guarantee the sealed of lubricating oil, prevent the high-speed operation in-process oil leak of power takeoff, power takeoff during operation inside temperature is higher, and there are certain roughness and inequality in preceding shell, backshell and end cover terminal surface in addition, and liner and end cover liner have certain elasticity, set up and can make the power takeoff sealed in above-mentioned position, and then guarantee the steady operation of power takeoff.

Preferably, as an improvement, the output shaft is equipped with the flange near the pot head of end cover, and the surface that flange and end cover contact is equipped with the skeleton oil blanket. Through the setting, the skeleton oil blanket is kept apart power takeoff inside and external environment, is unlikely to let the lubricating oil seepage, and the skeleton plays the effect of strengthening to oil blanket structure to make the oil blanket can keep shape and tension, also can prevent external dust simultaneously, inside entering power takeoff such as impurity.

Drawings

Fig. 1 is a cross-sectional view of an embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the gear shifting device comprises an input shaft 1, an input gear 2, an intermediate shaft 3, a spline group 4, a sliding sleeve 5, a gear shifting fork 6, a cylindrical pin 7, a spacer 8, a stop ring 9, a first bearing 10, a third bearing 11, a rear shell 12, a front shell 13, an end cover 14, an output shaft 15, a second bearing 16, a framework oil seal 17, a flange 18, a gasket 19, an end cover gasket 20, an output gear 21 and an oil inlet hole 22.

Examples

The embodiment is basically as shown in fig. 1, the power takeoff assembly with the forced lubrication shown in fig. 1 comprises a housing, a bearing set, an input shaft 1 and an output shaft 15 which are arranged in the housing, an input gear 2 is sleeved on the input shaft 1, the input shaft 1 can drive the input gear 2 to rotate, an output gear 21 is sleeved on the output shaft 15, the input gear 2 and the output gear 21 are in meshing transmission, the bearing set comprises a first bearing 10 and a second bearing 16, the housing comprises a front shell 13, a rear shell 12 and an end cover 14 which are sequentially connected, the left end of the input shaft 1 is connected with a gearbox intermediate shaft 3 and synchronously rotates, the right end of the input shaft 1 is rotatably connected with the rear shell 12 through a first bearing 10, two ends of the output shaft 15 are respectively rotatably connected with the front shell 13 and the rear shell 12 through the second bearing 16, an oil inlet hole 22 is formed in the end cover 14, a return hole for returning lubricating oil into a gearbox is formed in the rear cover 12, a spacer 8 is arranged between the input gear 2 and the first bearing 10, the input gear 2 is prevented from contacting with the first bearing 10 in a high-speed running process, so that the two bearings are abraded due to friction, and a stop ring 9 is sleeved on the outer surface of the first bearing 10.

The power takeoff in this embodiment still includes the structure of shifting, as shown in fig. 1, the structure of shifting includes shift fork 6, sliding sleeve 5, third bearing 11 and spline group 4, input gear 2 is connected with input shaft 1 through third bearing 11 rotation, spline group 4 includes first spline and second spline, first spline sets up on the left surface of input shaft 1, the second spline sets up the left side at input gear 2, sliding sleeve 5 is the cyclic annular cover and is established on spline group 4, the inside wall of sliding sleeve 5 is equipped with the third spline with spline group 4 complex, sliding sleeve 5 covers and establishes on first spline and with spline group 4 sliding connection, shift fork 6 covers and establishes on sliding sleeve 5 and can drive sliding sleeve 5 to remove, sliding sleeve 5 only covers and establishes on the second spline under the quiescent condition, shift fork 6 can drive sliding sleeve 5 to remove and make it lie in first spline and second spline simultaneously when the power takeoff is working. In this embodiment, the first bearing 10 is a cylindrical roller bearing, the second bearing 16 is a tapered roller bearing, and the third bearing 11 is a needle bearing.

Still include cylindric lock 7 in this embodiment, 1 left side terminal surface of input shaft is opened there is the first groove, the inside internal spline that is equipped with of first inslot, 3 one end of jackshaft can insert first groove and 3 surfaces of jackshaft be equipped with internal spline complex external spline, jackshaft 3 realizes synchronous rotation through the spline intercommunication with input shaft 1, the center on the relative surface of input shaft 1 and jackshaft 3 all is opened the second groove, cylindric lock 7 can insert in the second groove, jackshaft 3 is connected and is driven through the spline with input shaft 1, the transmission performance is good, and dismantle easy maintenance, cylindric lock 7 has still been set up and has been inserted in the second groove, on the one hand when installing power takeoff on jackshaft 3, cylindric lock 7 can play the effect in direction and centering two axle centers, on the other hand is when power takeoff work, cylindric lock 7 can play the effect of support, make power takeoff work more stable.

The front shell 13, the rear shell 12 and the end cover 14 are connected in sequence through bolts, a gasket 19 is arranged between the front shell 13 and the rear shell 12, and an end cover gasket 20 is arranged between the rear shell 12 and the end cover 14; as shown in figure 1, a flange 18 is sleeved at the right end of the output shaft 15, and a framework oil seal 17 is arranged on the surface of the flange 18, which is in contact with the end cover 14, so that good sealing performance inside the power takeoff is ensured.

The specific implementation process is as follows:

according to the technical scheme, the oil inlet hole 22 is formed in the end cover 14, the back shell 12 is provided with the backflow hole which enables lubricating oil to flow back into the gearbox, the power takeoff is communicated with the gearbox, the lubricating oil can enter the power takeoff through the oil inlet hole 22 and then flows back to the gearbox from the power takeoff, and the temperature of an internal gear and a shaft sleeve is rapidly increased when the power takeoff works for a long time; when the sliding sleeve 5 is sleeved on the second spline, the power takeoff obtains output power through the transmission intermediate shaft 3, the intermediate shaft 3 is connected with the movable input shaft 1 through the spline to rotate, because the input gear 2 is rotationally connected with the input shaft 1 through the third bearing 11, the input shaft 1 enters an idle state, the input gear 2 cannot rotate at the moment, when the shifting fork 6 drives the sliding sleeve 5 to slide, when the sliding sleeve is sleeved on the first spline and the second spline simultaneously, the rotation of the input shaft 1 can drive the input gear 2 to synchronously rotate, then the output gear 21 is meshed with the input gear 2, the rotating speed is increased, and the required rotating speed is reached.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be defined by the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a take force takeoff assembly of force-feed lubrication which characterized in that: including a housin, bearing group and input shaft and the output shaft of setting in the casing, the cover is equipped with input gear on the input shaft, the input shaft can drive input gear and rotate, the cover is equipped with output gear on the output shaft, input gear and output gear meshing transmission, bearing group includes first bearing and second bearing, the casing is including the preceding shell that connects gradually, backshell and end cover, input shaft one end and gearbox jackshaft connection and synchronous rotation, the input shaft other end is passed through first bearing and backshell and is rotated and be connected, the both ends of output shaft are passed through the second bearing and are rotated with preceding shell and backshell respectively and be connected, the inlet port has been seted up on the end cover, the backshell is opened and is equipped with the backward flow hole that makes lubricating oil flow in the gearbox.

2. The power take-off assembly with forced lubrication of claim 1, wherein: still include the structure of shifting, the structure of shifting is including the shift fork of shifting, the sliding sleeve, third bearing and spline group, input gear passes through third bearing and input shaft swivelling joint, spline group is including first spline and second spline, first spline sets up the surface that is close to one side of input shaft at the input shaft, the second spline sets up the one side that is close to the input shaft at input gear, the sliding sleeve inner circle be equipped with spline group complex third spline, the sliding sleeve cover is established on first spline and with spline group sliding connection, the shift fork cover is established and can be driven the sliding sleeve slip on the sliding sleeve.

3. The power take-off assembly with forced lubrication of claim 2, wherein: a spacer ring is arranged between the input gear and the first bearing, and a stop ring is sleeved on the outer surface of the first bearing.

4. A power take-off assembly with forced lubrication according to claim 3, wherein: the novel gear box is characterized by further comprising a cylindrical pin, wherein a first groove is formed in the end face, close to the intermediate shaft, of the input shaft, an internal spline is arranged inside the first groove, one end of the input shaft can be inserted into the first groove, an external spline matched with the internal spline is arranged on the outer surface of the input shaft, a second groove is formed in the center of the opposite surface of the input shaft and the center of the opposite surface of the input shaft, and the cylindrical pin can be inserted into the second groove.

5. The power take-off assembly with forced lubrication of claim 4, wherein: the first bearing is a cylindrical roller bearing, the second bearing is a tapered roller bearing, and the third bearing is a needle bearing.

6. The power take-off assembly with forced lubrication of claim 5, wherein: the front shell, the rear shell and the end cover are sequentially connected through bolts, a gasket is arranged between the front shell and the rear shell, and an end cover gasket is arranged between the rear shell and the end cover.

7. The power take-off assembly with forced lubrication of claim 6, wherein: one end of the output shaft close to the end cover is sleeved with a flange, and a framework oil seal is arranged on the surface of the flange, which is in contact with the end cover.