CN104879454A - Novel output shaft clutch type gearbox - Google Patents

Abstract

The invention relates to a novel output shaft clutch type gearbox, which comprises an input shaft clutch, an input shaft, an input shaft drive gear set, an input shaft reverse drive gear, an intermediate shaft, a reverse intermediate gear installed on the intermediate shaft, and an output shaft , the output shaft sliding gear set and the reverse gear sliding gear, the input shaft clutch is installed at the input end of the input shaft, the input shaft driving gear set and the input shaft reverse gear driving gear are installed on the input shaft, the output shaft sliding gear set and the reverse gear sliding The gears are installed on the output shaft. The output shaft sliding gear set and the reverse gear sliding gear are all connected to the shift fork to realize gear shifting. It also includes the output shaft clutch and the output shaft clutch locking mechanism. The output shaft is controlled by the front section of the output shaft. and the rear section of the output shaft, an output shaft clutch is arranged between the front section of the output shaft and the rear section of the output shaft. The invention has the advantages of smooth shifting, easy operation, simple structure, low manufacturing cost, strong practical function, high service life and reliability.

Description

A New Output Shaft Clutch Gearbox

technical field

The invention belongs to the field of automobiles, tractors, engineering machinery and other ground motorized equipment requiring speed change, and relates to a gearbox for shifting through sliding gears, synchronizers or meshing sleeves, in particular to a novel output shaft clutch type gearbox.

Background technique

At present, there are three main modes of gear shifting in manual shifting transmissions for vehicles: sliding gear shifting, meshing sleeve shifting and synchronizer shifting. However, there are some problems in the gearboxes of the three modes: the gearboxes of the sliding gear shifting and the meshing sleeve shifting modes all have the problem of difficult shifting, because in the shifting process, when the input shaft power from the engine is cut off, The output shaft will still input power from the wheels to the gearbox in reverse, resulting in gear rattling during gear shifting. At present, the first method to solve this problem is to improve the driver's driving skills, so that it can accurately grasp the speed ratio of the input shaft and the output shaft when shifting gears, and find the shift points of each gear position, but this method is very difficult for the driver. The driving technical requirements are relatively high, which is not easy to realize; the second is to use a synchronizer in the gearbox, that is, a gearbox that uses a synchronizer to shift gears. Although the shifting smoothness of the synchronizer shifting is relatively high, each synchronizer can only To ensure the shifting operation of two gears, the structure of the gearbox for synchronizer shifting is relatively complicated and the manufacturing cost is high. Moreover, the synchronizing ring in the synchronizer is made of copper material, which has low service life and reliability.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide an output shaft clutch type transmission with smooth shifting, easy operation, simple structure, low manufacturing cost, high service life and reliability. The gearbox can achieve the effect of synchronizer shifting in traditional gearboxes shifting through sliding gears or meshing sleeves.

The present invention solves its technical problem and realizes through the following technical solutions:

A new output shaft clutch type gearbox, including an input shaft clutch, an input shaft, an input shaft drive gear set, an input shaft reverse drive gear, an intermediate shaft, a reverse intermediate gear installed on the intermediate shaft, an output shaft, an output shaft Sliding gear set and reverse gear sliding gear, input shaft clutch is installed at the input end of the input shaft, input shaft driving gear set and input shaft reverse gear driving gear are installed on the input shaft, the output shaft sliding gear set and reverse gear sliding The gears are all installed on the output shaft, and the output shaft sliding gear set and the reverse sliding gear are both connected to the shift fork to realize gear shifting. It is characterized in that it also includes an output shaft clutch and an output shaft clutch locking mechanism. The output shaft is composed of the front section of the output shaft and the rear section of the output shaft, and an output shaft clutch is arranged between the front section of the output shaft and the rear section of the output shaft.

Moreover, the output shaft clutch locking mechanism includes the splines at the front section of the output shaft, the splines at the rear section of the output shaft, the locking clutch sleeve and the internal splines of the locking clutch sleeve made in the locking clutch sleeve. The front section of the output shaft The splines are made on the outer circumference of the front section rear part of the output shaft, and the rear section splines of the output shaft are made on the outer circumference of the output shaft rear section front part.

Moreover, it also includes a reverse gear transmission shaft, a locking clutch sleeve toggling shaft and a locking clutch sleeve return spring, the reverse gear transmission shaft drives the reverse gear sliding gear, and the locking clutch sleeve toggling shaft drives the lock One end of the toggle shaft of the lock-up clutch sleeve is opposite to the reverse gear shift shaft, and the other end of the lock-up clutch sleeve toggle shaft is connected with a return spring of the lock-up clutch sleeve. The shift fork realizes the linkage and disengagement between the reverse gear transmission shaft and the locking clutch sleeve toggle shaft, so that the splines in the locking clutch sleeve are slidingly engaged or disengaged on the splines of the front section of the output shaft and the splines of the rear section of the output shaft. Lock the linkage and disengagement of the clutch sleeve and the reverse gear sliding gear, so that the power can be transmitted to the wheels during the reverse gear.

Moreover, it also includes a locking clutch sleeve driving shaft, and the locking clutch sleeve driving shaft drives the locking clutch sleeve toggle shaft to act.

Moreover, the output shaft clutch is a one-way clutch.

Advantage of the present invention and beneficial effect are:

1. This output shaft clutch type gearbox, when the vehicle is in the forward state and the engine is driving, the output shaft one-way clutch is combined, and the front section of the output shaft drives the rotation of the rear section of the output shaft; when the input shaft clutch is cut off, the transmission is in the shifting state At this time, the wheels will transmit the power to the output shaft in reverse, and the output shaft clutch is separated at this time. At this time, the input shaft and the front section of the output shaft in the transmission are in a relatively static state, and the sliding gear set of the output shaft passes through the shift fork and the input shaft again. The other gears on the driving gear set are hooked up to complete the gear shift; when the reverse gear needs to be engaged, because the output shaft one-way clutch is in a disengaged state, the reverse gear sliding gear meshes with the input shaft reverse gear driving gear through the shift fork, and at the same time, The reverse gear transmission shaft is linked with the locking clutch sleeve toggle shaft, so that the locking clutch sleeve locks the front section of the output shaft and the rear section of the output shaft together through the internal splines of the locking clutch sleeve to realize the rear section of the output shaft. When the vehicle goes downhill, the driver can independently manipulate the locking clutch sleeve through the drive shaft of the locking clutch sleeve to lock the front section of the output shaft and the rear section of the output shaft to realize the engine braking function. The design of the output shaft clutch replaces the complex synchronizer part of the traditional gearbox, simplifies the structure of the gearbox, reduces the manufacturing cost, and improves the reliability of the gearbox; The operation smoothness of the gearbox is realized, and the gear shifting is realized; the use of non-ferrous metals in the gearbox is reduced, and the service life and reliability of operation are improved.

2. This output shaft clutch type gearbox, through the design of the drive shaft of the locking clutch sleeve, enables the locking clutch sleeve toggle shaft to be driven independently, so that it can still work when the vehicle is in the forward state, and realizes the braking of the engine. The dynamic function enhances its practicality.

3. The structure design of the present invention is scientific and reasonable, and has the advantages of smooth shifting, easy operation, simple structure, low manufacturing cost, strong practical function, high service life and reliability, and is a highly innovative output shaft clutch type transmission box.

Description of drawings

Fig. 1 is the structural representation under the advancing state of the present invention;

Fig. 2 is a structural schematic diagram of the present invention under the shifting state;

Fig. 3 is a schematic structural diagram of the present invention in a backward state.

Fig. 4 is a schematic diagram of the structure of the engine under braking state of the present invention.

Explanation of reference signs:

1-Input shaft clutch, 2-Input shaft, 3-First driving gear of input shaft, 4-Second driving gear of input shaft, 5-Front part of output shaft, 6-Reverse gear of input shaft, 7-Lock clutch sleeve Drive shaft, 8-Intermediate shaft, 9-Locking clutch sleeve, 10-Output shaft front section spline, 11-Output shaft rear section spline, 12-Output shaft clutch, 13-Output shaft rear section, 14-Locking clutch sleeve back Bit spring, 15-locking clutch sleeve toggle shaft, 16-reverse gear shift shaft, 17-reverse gear sliding gear, 18-output shaft second sliding gear, 19-output shaft first sliding gear, 20-reverse gear middle gear.

Detailed ways

The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

A new type of output shaft clutch type gearbox, including input shaft clutch 1, input shaft 2, input shaft first driving gear 3, input shaft second driving gear 4, input shaft reverse gear driving gear 6, intermediate shaft 8, mounted on Reverse gear intermediate gear 20, output shaft, output shaft sliding gear set and reverse gear sliding gear 17 on the intermediate shaft. The output shaft sliding gear set is composed of the output shaft first sliding gear 19 and the output shaft second sliding Gear 18 constitutes.

An input shaft clutch is installed on the input shaft, which is used to combine or cut off the engine power. On the input shaft, the first driving gear of the input shaft, the second driving gear of the input shaft and the reverse driving gear of the input shaft are installed in sequence. Both the output shaft sliding gear and the reverse gear sliding gear are installed on the front section of the output shaft. Both the output shaft sliding gear and the reverse gear sliding gear are connected to the shift fork to realize gear shifting. The innovation is that it also includes the output shaft clutch 12 and the output shaft clutch locking mechanism, the output shaft clutch is a one-way clutch, the output shaft is composed of the output shaft front section 5 and the output shaft rear section 13, and the output shaft clutch is placed at the rear of the output shaft front section In the space formed by the inner hole and the outer circle at the front part of the rear section of the output shaft, the front and rear two section output shafts can be wedged tightly when the output shaft clutch is combined.

The output shaft clutch locking mechanism includes the output shaft front section spline 10, the output shaft rear section spline 11, the locking clutch sleeve 9 and the locking clutch sleeve internal splines in the locking clutch sleeve, the output shaft The front section spline is made on the outer periphery of the output shaft front section rear part, and the described output shaft rear section spline is made on the outer periphery of the output shaft rear section front part.

It also includes a reverse gear transmission shaft 16, a locking clutch sleeve toggle shaft 15 and a locking clutch sleeve return spring 14, the reverse gear transmission shaft drives the reverse gear sliding gear, and the locking clutch sleeve toggle shaft drives The locking clutch sleeve moves, one end of the locking clutch sleeve toggle shaft is opposite to the reverse gear transmission shaft, and the other end of the locking clutch sleeve toggle shaft is connected with the locking clutch sleeve return spring, which drives the reverse gear transmission shaft The gear shift fork realizes the linkage and disengagement between the reverse gear transmission shaft and the locking clutch sleeve toggle shaft, so that the splines in the locking clutch sleeve slide and engage or disengage on the splines of the front section of the output shaft and the splines of the rear section of the output shaft Realize the linkage and disengagement of the locking clutch sleeve and the reverse gear sliding gear, so that the power can be transmitted to the wheels during the reverse gear.

It also includes a locking clutch sleeve drive shaft 7, which drives the locking clutch sleeve toggle shaft to move.

Both the output shaft sliding gear and the reverse sliding gear can be shifted through the shift fork; the output shaft clutch locking mechanism can be linked with the reverse sliding gear to ensure that the reverse gear is realized. The operator operates alone to ensure that the output shaft clutch can be locked under other working conditions.

When the vehicle is in the forward state, both the input shaft clutch and the output shaft clutch are combined, the first sliding gear of the output shaft meshes with the first driving gear of the input shaft, the input shaft drives the front section of the output shaft to rotate, and the front section of the output shaft drives the rear section of the output shaft to rotate , the engine power can be smoothly output to the wheels;

When the vehicle is in the shifting state, the driver disengages the input shaft clutch, and the wheel power will be reversely input to the gearbox. At this time, due to the one-way transmission characteristics of the output shaft clutch, the output shaft clutch is in a disengaged state. At this time, the input shaft and the The front section of the output shaft is in a relatively static state, and the sliding gear of the output shaft is meshed with the second driving gear of the input shaft on the input shaft through the shift fork to complete the smooth shift operation;

When the vehicle needs to move backward, the input shaft clutch is disengaged, and the reverse gear slide gear meshes with the reverse intermediate gear through the shift fork, and the reverse intermediate gear meshes with the input shaft and reverse driving gear. At the same time, the reverse gear transmission shaft and the locking clutch sleeve The toggle shafts are interlocked, so that the locking clutch sleeve locks the front section of the output shaft and the rear section of the output shaft together through the internal splines of the locking clutch sleeve, so as to realize the rotation of the rear section of the output shaft.

The invention improves the structure of the output shaft in the traditional speed changer, turns one output shaft into two parts (i.e. the front section of the output shaft and the rear section of the output shaft), and adds a one-way clutch between the two parts of the output shaft. In this way, when the driver shifts gears and cuts off the engine, the one-way clutch on the output shaft will cut off the power transmitted from the wheels on the rear section of the output shaft, so that both the input shaft and the front section of the output shaft of the transmission have no power, and the gears are in position. When shifting gears in a static state, each shifting gear can be freely engaged without any tooth-smacking phenomenon. When the gear is engaged in place, then combine the input shaft and output shaft clutch to make the vehicle drive according to the new gear. .

Since the one-way clutch has the characteristics of one-way transmission, the output shaft one-way clutch is in a combined state when the engine outputs power to the wheels, which can ensure that when the vehicle is moving forward, the power is transmitted from the input shaft to the front section of the output shaft, and then from the front section of the output shaft. to the rear of the output shaft. (As attached picture 1)

During the shifting operation, the driver cuts off the engine power, the input shaft clutch is disengaged, and the input shaft has no power input. At this time, if there is no output shaft clutch, the wheel power will be reversely transmitted to the gearbox. After adding the output shaft clutch, the output shaft clutch It will automatically cut off the power from the wheels, so that there is no power input to the front section of the output shaft, which is convenient for the driver to perform gear shifting operations without the phenomenon of gear hitting. (As attached picture 2)

During the reverse gear operation, since the one-way clutch is installed on the output shaft, the clutch can be in a disengaged state, and the reverse gear power cannot be transmitted to the wheels. At this time, the output shaft clutch locking mechanism locks the clutch, so that the power is directly transmitted from the front section of the output shaft to the rear section of the output shaft. (As attached picture 3)

When the vehicle goes downhill, the driver independently manipulates the locking clutch sleeve to lock the front section of the output shaft and the rear section of the output shaft, so that the vehicle has an engine braking function. (as attached picture 4)

Although the embodiments and drawings of the present invention are disclosed for the purpose of illustration, those skilled in the art can understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims Therefore, the scope of the present invention is not limited to what is disclosed in the embodiments and drawings.

Claims (5)

1. a novel output shaft clutch-type gearbox, comprise input shaft clutch, input shaft, input shaft driving tooth wheels, input shaft reverse driving gear, jack shaft, be arranged on the reverse idler gear on jack shaft, output shaft, output shaft slide teeth wheels and reverse gear sliding gear, the input end of input shaft installs input shaft clutch, input shaft is provided with input shaft driving tooth wheels and input shaft reverse driving gear, described output shaft slide teeth wheels and reverse gear sliding gear are installed on output shaft, output shaft slide teeth wheels and reverse gear sliding gear all realize shifting gears by mounting with selector fork, it is characterized in that: also comprise output shaft clutch and output shaft clutch lock locking mechanism, described output shaft is made up of output shaft leading portion and output shaft back segment, output shaft clutch is provided with between output shaft leading portion and output shaft back segment.

2. one according to claim 1 novel output shaft clutch-type gearbox, it is characterized in that: the locking clutch cover internal spline that described output shaft clutch lock locking mechanism comprises output shaft leading portion spline, output shaft back segment spline, locking clutch cover and is formed in locking clutch cover, described output shaft leading portion spline is formed on the periphery at output shaft leading portion rear portion, and described output shaft back segment spline is formed on the periphery of output shaft back segment front portion.

3. one according to claim 2 novel output shaft clutch-type gearbox, it is characterized in that: also comprise reverse gear variable-speed shaft, locking clutch cover shifting shaft and locking clutch cover return spring, described reverse gear variable-speed shaft drives the action of reverse gear sliding gear, described locking clutch cover shifting shaft drives the action of locking clutch cover, one end of locking clutch cover shifting shaft is relative with reverse gear variable-speed shaft, the other end of locking clutch cover shifting shaft is connected with locking clutch cover return spring, interlock between reverse gear variable-speed shaft and locking clutch cover shifting shaft and disengaging is realized by driving the selector fork on reverse gear variable-speed shaft, thus engage by the slip of locking clutch cover internal spline or throw off on output shaft leading portion spline and output shaft back segment spline, realize locking clutch cover and reverse gear sliding gear interlock and disengaging.

4. one according to claim 3 novel output shaft clutch-type gearbox, it is characterized in that: also comprise locking clutch cover live axle, this locking clutch cover drive shaft locking clutch cover shifting shaft action, completes engaging and disengagement of locking clutch cover and output shaft leading portion spline and output shaft back segment spline.

5. one according to claim 1 novel output shaft clutch-type gearbox, is characterized in that: described output shaft clutch is overrunning clutch.