阅读说明：本技术 一种机械式侧取力器 (Mechanical side power takeoff ) 是由 王贵选 严鉴铂 刘义 许先哲 于 2019-09-26 设计创作，主要内容包括：本发明公开的一种机械式侧取力器,包括挂挡轴、输入齿轮、取力器中间齿轮和操作机构,操作机构控制挂挡轴在壳体中轴线移动,进而使取力器中间齿轮与输入齿轮啮合或分离,实现取力器的挂挡或摘挡,挂挡后通过取力器输出齿轮轴输出扭矩,该侧取力器通过机械传动控制挂挡轴挂挡或摘挡,挂挡结构简单,操作便捷,采用该取力器即不需要整车上配装储气罐,降低了整车重力,降低了车辆成本。(The invention discloses a mechanical side power takeoff, which comprises a gear engaging shaft, an input gear, a power takeoff intermediate gear and an operating mechanism, wherein the operating mechanism controls the gear engaging shaft to move in the central axis of a shell, so that the power takeoff intermediate gear is meshed with or separated from the input gear, gear engaging or gear disengaging of the power takeoff is realized, torque is output by a gear shaft of the power takeoff after gear engaging, the side power takeoff controls gear engaging or gear disengaging of the gear engaging shaft through mechanical transmission, the gear engaging structure is simple, the operation is convenient, and the power takeoff does not need to be provided with an air storage tank on the whole vehicle, so that the gravity of the whole vehicle is reduced, and the vehicle cost is reduced.)

1. A mechanical side power takeoff is characterized by comprising a power takeoff shell (3), an input gear (1), a power takeoff intermediate gear (2), a gear engaging shaft (4), a power takeoff output gear shaft (8) and an operating mechanism;

the power takeoff device is characterized in that a supporting arm is arranged in the power takeoff device shell (3), an input gear (1) is sleeved on the supporting arm in an empty mode and is meshed with a gear of a transmission, a gear shifting shaft (4) is arranged in the power takeoff device shell (3) and is arranged coaxially with the input gear (1), a power takeoff device intermediate gear (2) is sleeved on the gear shifting shaft (3) in an empty mode and moves synchronously with the gear shifting shaft (3), and a power takeoff device output gear shaft (8) is arranged in the power takeoff device shell (3) and is normally meshed with the power takeoff device intermediate gear (2);

one end of the gear shifting shaft (4) extends out of the power takeoff shell (3) to be connected with an operating mechanism, and the operating mechanism is used for controlling the gear shifting shaft (4) to move axially, so that the middle gear (2) of the power takeoff is meshed with or separated from the input gear (1).

2. Mechanical side-lift device according to claim 1, characterized in that the support arm is hollow, into which one end of the catch shaft (4) projects and the other end is supported on the power take-off housing.

3. The mechanical side power takeoff device as claimed in claim 1, wherein a gear shaft oil seal (5) is further disposed at the joint of the gear shaft (4) and the power takeoff housing (3), and the gear shaft oil seal (5) is sleeved on the gear shaft (4).

4. A mechanical side-drive device according to claim 1, characterized in that the input gear (1) and the power take-off intermediate gear (2) are provided with face teeth on their opposite faces, the input gear (1) and the power take-off intermediate gear (2) being in mesh with the face teeth.

5. Mechanical side-force taker according to claim 1, characterized in that the power take-off housing (3) is provided with a spring pin and the gear shaft (4) is provided with two self locking grooves, the spring pin cooperating with the self locking grooves for positioning the neutral or gear position of the gear shaft.

6. The mechanical side force taker according to claim 5, characterized in that the spring pins comprise a self locking spring (7) and a self locking steel ball (6);

the power takeoff casing (3) is provided with a spring hole, the self-locking spring (7) is arranged in the spring hole, the self-locking steel ball (6) is arranged at the top of the self-locking spring (7), and the self-locking steel ball (6) is abutted to one of the self-locking grooves.

7. Mechanical side force taker according to claim 1, characterized in that the operating mechanism comprises a rocker arm (9) and a pull wire (10);

the middle part of the rocker arm (9) is hinged with the transmission shell, the lower end of the rocker arm (9) is connected with one end of the gear hanging shaft (4) extending out of the shell, the upper end of the rocker arm (9) is connected with one end of a pull wire (10), and the other end of the pull wire (10) is connected with a handball (11).

8. Mechanical side-lift according to claim 1, characterized in that the power take-off output gear shaft (8) is supported at both ends on the power take-off housing (3) by means of bearings.

9. Mechanical side-force takeoff according to claim 1, characterized in that the input gear wheel (1) is mounted on a support by means of bearings; the power takeoff intermediate gear (2) is arranged on the gear shifting shaft (4) through a bearing.

Technical Field

The invention relates to the technical field of power takeoff control, in particular to a mechanical side power takeoff.

Background

The existing power takeoff generally adopts a cylinder to engage or adopts a motor to drive the power takeoff to engage; the air storage tank is required to be installed on the whole vehicle by the power takeoff for engaging the cylinder, the power takeoff is controlled by the power takeoff cylinder to be operated in an engaging mode, but the air storage tank is not arranged due to space, weight and space limitations in some small light trucks, and therefore the power takeoff for engaging the cylinder cannot be used. The motor is adopted to drive the power takeoff to engage gears, so that the cost is high.

Therefore, a mechanical power takeoff is urgently needed to be designed for a light truck without an air storage tank, so that the problem of gear engagement of the vehicle under the condition that the vehicle is not provided with the air storage tank is solved.

Disclosure of Invention

Aiming at the problem that the power takeoff cannot be put into gear due to the fact that a whole vehicle is not provided with an air storage tank in the prior art, the invention provides the mechanical side power takeoff.

The invention is realized by the following technical scheme:

a mechanical side power takeoff comprises a power takeoff shell, an input gear, a power takeoff intermediate gear, a shift shaft, a power takeoff output gear shaft and an operating mechanism;

the power takeoff shell is internally provided with a supporting arm, an input gear is sleeved on the supporting arm in an empty mode and is meshed with a gear of the transmission, a gear engaging shaft is arranged in the power takeoff shell and is coaxial with the input gear, a power takeoff intermediate gear is sleeved on the gear engaging shaft in an empty mode and moves synchronously with the gear engaging shaft, and a power takeoff output gear shaft is arranged in the power takeoff shell and is normally meshed with the power takeoff intermediate gear;

one end of the gear shifting shaft extends out of the power takeoff shell to be connected with an operating mechanism, and the operating mechanism is used for controlling the gear shifting shaft to move axially so that the intermediate gear of the power takeoff is meshed with or separated from the input gear.

Preferably, the support arm is of a hollow structure, one end of the gear shaft extends into the support arm, and the other end of the gear shaft is supported on the power takeoff shell.

Preferably, a gear shaft oil seal is further arranged at the joint of the gear shaft and the power takeoff shell, and the gear shaft oil seal is sleeved on the gear shaft.

Preferably, two opposite end faces of the input gear and the power takeoff intermediate gear are provided with end face teeth, and the input gear and the power takeoff intermediate gear are meshed through the end face teeth.

Preferably, the power takeoff casing is further provided with a spring pin, the gear engaging shaft is provided with two self-locking grooves, and the spring pin is matched with the self-locking grooves and used for positioning a neutral gear position or a gear engaging position of the gear engaging shaft.

Preferably, the spring pin comprises a self-locking spring and a self-locking steel ball;

the power takeoff shell is provided with a spring hole, the self-locking spring is arranged in the spring hole, the self-locking steel ball is arranged at the top of the self-locking spring, and the self-locking steel ball is abutted to one of the self-locking grooves.

Preferably, the operating mechanism comprises a rocker arm and a pull wire;

the middle part of the rocker arm is hinged with the transmission shell, the lower end of the rocker arm is connected with one end of the gear hanging shaft extending out of the shell, the upper end of the rocker arm is connected with one end of a stay wire, and the other end of the stay wire is connected with a handball.

Preferably, both ends of the output gear shaft of the power takeoff are supported on the power takeoff housing through bearings.

Preferably, the input gear is mounted on a support by a bearing; the power takeoff intermediate gear is arranged on the gear shifting shaft through a bearing.

Compared with the prior art, the invention has the following beneficial technical effects:

the invention provides a mechanical side power takeoff, which comprises a gear engaging shaft, an input gear, a power takeoff intermediate gear and an operating mechanism, wherein the operating mechanism controls the gear engaging shaft to move on the central axis of a shell, so that the power takeoff intermediate gear is meshed with or separated from the input gear, gear engaging or gear disengaging of the power takeoff is realized, torque is output by a gear shaft of the power takeoff after gear engaging, the side power takeoff controls gear engaging or gear disengaging of the gear engaging shaft through mechanical transmission, the gear engaging structure is simple, the operation is convenient, and the power takeoff does not need to be provided with an air storage tank on the whole vehicle, so that the gravity of the whole vehicle is reduced, and the vehicle cost is reduced.

The gear engaging shaft is provided with the oil seal, so that oil leakage at the joint of the shell and the gear engaging shaft is avoided, and the service life of the power takeoff is prolonged.

Furthermore, a spring pin is arranged on the shell, so that the state position of the gear shifting shaft is self-locked, and the gear shifting risk is avoided.

Furthermore, the action of the gear-engaging shaft is controlled through the pull wire and the rocker arm, the structure is simple, and the operation is convenient and fast.

Drawings

FIG. 1 is a block diagram of the power takeoff of the present invention;

fig. 2 is a control schematic diagram of the power takeoff of the present invention.

In the figure: 1. an input gear; 2. a power takeoff intermediate gear; 3. a power takeoff housing; 4. a gear shaft; 5. a gear shaft oil seal; 6. self-locking steel balls; 7. a self-locking bullet ; 8. the power takeoff outputs a gear shaft; 9. a rocker arm; 10. a pull wire; 11. handball.

Detailed Description

The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.

Referring to fig. 1 and 2, a mechanical side power takeoff includes a power takeoff housing 3, an input gear 1, a power takeoff intermediate gear 2, a shift shaft 4, a power takeoff output gear shaft 8, a rocker arm 9, a pull wire 10, and a handball 11.

The power takeoff casing 3 is internally provided with a supporting arm, an input gear 1 is sleeved on the supporting arm through a bearing and is meshed with a transmission gear, the input gear 1 is used as a power input wheel of the power takeoff, a gear engaging shaft 3 is arranged in the power takeoff casing 3 and is coaxially arranged with the input gear 1, the gear engaging shaft 3 can move along the axial direction of the gear engaging shaft, one end of the gear engaging shaft 4 extends out of the power takeoff casing 3 and is hinged with one end of a rocker arm 9, and the other end of the rocker arm 9 is connected with a handball 11 through a pull wire 10.

The power takeoff intermediate gear 2 is sleeved on the input gear 1 through a bearing, moves synchronously with the input gear 1 and can be meshed with the input gear 1.

The power takeoff output gear shaft 8 is arranged in the power takeoff shell 3 and is parallel to the gear engaging shaft 4, two ends of the power takeoff output gear shaft 8 are supported in the power takeoff shell 3 through bearings, a gear on the power takeoff output gear shaft 8 is normally meshed with the power takeoff intermediate gear 2, and the power takeoff output gear shaft 8 is used as a power output interface of the power takeoff.

When the gear is engaged or disengaged, the operating handball 11 controls the rocker arm to act through the pull wire 10, the rocker arm controls the gear engaging shaft 3 to be axially fixed on the power takeoff shell 3, the power takeoff intermediate gear 2 can be meshed or separated with the input gear 1, and the gear engagement or disengagement of the power takeoff is completed.

The end face tooth is arranged on one end face of the input gear 1, the end face tooth matched with the input gear 1 is arranged on the end face, close to the input gear 1, of the power takeoff intermediate gear 2, the input gear 1 is meshed with the power takeoff intermediate gear 2 through the end face tooth, and the overall size of the power takeoff can be reduced by adopting the end face tooth.

Still be provided with auto-lock spring 7 and auto-lock steel ball 6 on the power takeoff casing 3, be provided with the spring hole on the power takeoff casing 3, auto-lock spring 7 sets up in the spring hole, auto-lock steel ball 6 sets up the top at auto-lock spring 7, the top butt of auto-lock steel ball 6 is on the shift axle 4, be provided with on the shift axle 4 and put into gear from the locked groove and neutral gear from the locked groove, auto-lock steel ball 6 is arranged in putting into gear from the locked groove or neutral gear from the locked groove for put into gear or neutral gear state location to shift axle 4.

The support arm is hollow structure, and the one end of engaging shaft 4 stretches into to the support arm in, and the other end still is provided with engaging shaft oil blanket 5 through supporting on the power takeoff casing on engaging shaft 4, is fixed in on the power takeoff casing, prevents the power takeoff oil leak.

The pull wire is a flexible shaft pull wire.

The following explains the gear engaging process and the gear disengaging process of the mechanical side power takeoff in detail.

Procedure for putting into gear

When the power takeoff is in a neutral gear state, a power takeoff gear engaging handball 11 of a cab is operated, the handball is connected to a power takeoff gear engaging rocker arm through a pull wire 10, the gear engaging rocker arm is connected to a gear engaging shaft of the power takeoff, the gear engaging shaft 4 is moved leftwards through the rotation of the rocker arm, so that the power takeoff intermediate gear 2 is meshed with end face teeth of the input gear, at the moment, the power takeoff is in gear engagement, the input gear 1 and the power takeoff intermediate gear 2 synchronously rotate, the power takeoff intermediate gear 2 drives a power takeoff output gear shaft 8 to rotate, power output is achieved, meanwhile, a self-locking steel ball 6 is abutted in a gear engaging self-locking groove, gear engaging self-locking is achieved, and gear falling is prevented.

Gear-off process

The power takeoff gear engaging handball 11 of the control cab moves reversely, the rocker arm drives the gear engaging shaft and the power takeoff intermediate gear shaft to move rightwards, the power takeoff intermediate gear is separated from the input gear, and when the power takeoff stroke is reached, the self-locking steel ball enters the self-locking groove on the left side of the gear engaging shaft, so that gear-disengaging position self-locking is realized.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.