CN217598321U

CN217598321U - Pure electric drive system based on skid-steer loader

Info

Publication number: CN217598321U
Application number: CN202221992294.7U
Authority: CN
Inventors: 赵洪星; 岳佳杰; 王珑; 蒋小康; 唐师法
Original assignee: Wuxi Mingheng Hybrid Power Technology Co ltd
Current assignee: Wuxi Mingheng Hybrid Power Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-10-18
Anticipated expiration: 2032-07-28

Abstract

The utility model relates to the technical field of vehicle driving, in particular to a pure electric drive system based on a skid steer loader, which comprises a drive motor and a reduction gearbox assembly which are connected with each other, wherein the reduction gearbox assembly comprises a brake cavity and a deceleration cavity which are connected with each other, a wet clutch is arranged in the brake cavity, a deceleration transmission mechanism is arranged in the deceleration cavity, and a sun wheel shaft of the deceleration transmission mechanism can run through the deceleration cavity and is connected with a chain arranged on a frame; the driving motor acts on the speed reduction transmission mechanism under the regulation of the wet clutch, and the chain is driven by the sun wheel shaft. The system not only can realize the combined driving of a single motor and the speed reducer, but also can realize the symmetrical arrangement, is favorable for reducing the cost of the whole vehicle, has wide speed ratio adjusting range of the planet row for the speed reducer, occupies low space, has simple structure and is suitable for batch production.

Description

Pure electric drive system based on skid-steer loader

Technical Field

The utility model relates to a vehicle drive technical field especially relates to a pure electric drive system based on skid steer loader.

Background

The skid steer loader is also called a skid steer loader, a multifunctional engineering vehicle and a multifunctional engineering machine. The wheel type special chassis equipment realizes vehicle steering by utilizing the linear velocity difference of wheels at two sides. The device is mainly used for occasions with narrow operation places, uneven ground and frequent operation content change. At present, the skid steer loader of domestic mainstream uses hydraulic motor as drive unit, and hydraulic power mainly comes from the engine, and along with domestic new forms of energy development trend, whole car factory is to skid steer loader pure electric drive's demand beginning to form, but pure electric drive's skid steer loader in industry still is few.

Therefore, a new technology is urgently needed to solve the technical problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's problem, a pure electric drive system based on skid-steer loader is provided, the pure electric drive of skid-steer loader can be realized, and single power assembly symmetrical arrangement can be realized, be different from traditional hydraulic motor drive power system, not only can realize single motor and reduction gear combination drive, can realize symmetrical arrangement moreover, be favorable to reducing whole car cost, the reduction gear is arranged with the planet and is arranged speed reduction velocity ratio control range extensively, the space occupies lowly, simple structure is fit for batch production.

The above purpose is realized by the following technical scheme:

a pure electric drive system based on a skid steer loader comprises a drive motor and a reduction gearbox assembly which are connected with each other, wherein the reduction gearbox assembly comprises a brake cavity and a deceleration cavity which are connected with each other, a wet clutch is arranged in the brake cavity, a deceleration transmission mechanism is arranged in the deceleration cavity, and a sun wheel shaft of the deceleration transmission mechanism can penetrate through the deceleration cavity and is connected with a chain arranged on a frame; the driving motor acts on the speed reduction transmission mechanism under the regulation of the wet clutch, and the chain is driven by the sun wheel shaft.

Furthermore, one side of the wet clutch is connected with a motor rotating shaft of the driving motor, and the other side of the wet clutch is provided with a driven rotating shaft which is connected with a small bevel gear spline of the reduction transmission mechanism.

Furthermore, a sliding sealing element is arranged at the joint of the braking cavity and the speed reduction cavity, and the driven rotating shaft is sleeved with the sliding sealing element.

Further, the wet clutch is a normally closed clutch and is clamped by the inner wall of the brake cavity.

Furthermore, a clutch front bearing and a clutch rear bearing are respectively arranged along two sides of the wet clutch, the clutch front bearing is sleeved with the motor rotating shaft, and the clutch rear bearing is sleeved with the driven rotating shaft; the clutch front bearing is clamped through the inner wall of the brake cavity, and the clutch rear bearing is clamped through the inner wall of the deceleration cavity.

Further, speed reduction drive mechanism includes the ring gear that passes through the inner wall centre gripping in braking chamber, be provided with three planet wheel in the ring gear, it is three be connected with the planet carrier on the planet wheel, the axle center position of planet carrier is provided with the planet carrier axle, the tip and the big bevel gear splined connection of planet carrier axle, big bevel gear can with little bevel gear meshing.

Furthermore, a planet carrier bearing is sleeved on the planet carrier shaft and clamped through the inner wall of the speed reduction cavity.

The sun wheel is meshed with the planet wheel, the center of the sun wheel is provided with the sun wheel shaft, and the sun wheel shaft can penetrate through the speed reduction cavity and is connected with the chain arranged on the frame.

Furthermore, the solar energy motor also comprises a sun wheel bearing which can be sleeved with the sun wheel shaft, and the sun wheel bearing is clamped by the inner wall of the speed reducing cavity.

Furthermore, a through hole which can be penetrated through by the sun wheel shaft is formed in the speed reduction cavity, and the through hole and the sun wheel shaft are sealed through an oil seal.

Further, lubricating oil is filled in the speed reducing cavity.

Advantageous effects

The utility model provides a pair of pure electric drive system based on skid-steer loader can realize skid-steer loader's pure electric drive, and can realize single power assembly symmetrical arrangement, is different from traditional hydraulic motor drive driving system, not only can realize single motor and reduction gear combination drive, can realize symmetrical arrangement moreover, is favorable to reducing whole car cost, and reduction gear is arranged with the planet and is slowed down velocity ratio control range extensively, and the space occupies lowly, and simple structure is fit for batch production.

Drawings

Fig. 1 is a schematic structural diagram of a pure electric drive system based on a skid steer loader according to the present invention;

fig. 2 is the utility model discloses a pure electric drive system's application schematic diagram based on skid-steer loader.

Graphic notation:

1-driving motor, 2-reduction box assembly, 3-brake cavity, 4-reduction cavity, 5-wet clutch, 6-reduction transmission mechanism, 7-frame, 8-chain, 9-motor rotating shaft, 10-driven rotating shaft, 11-clutch front bearing, 12-clutch rear bearing, 13-sun wheel shaft, 14-bevel pinion, 15-gear ring, 16-planet wheel, 17-planet carrier, 18-planet carrier shaft, 19-bevel pinion, 20-sun wheel, 21-planet carrier bearing, 22-sun wheel bearing, 23-through hole, 24-oil seal.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples.

As shown in fig. 1 and 2, a pure electric drive system based on a skid steer loader comprises a drive motor 1 and a reduction gearbox assembly 2 which are connected with each other, wherein the reduction gearbox assembly 2 comprises a brake cavity 3 and a reduction cavity 4 which are connected with each other, a wet clutch 5 is arranged in the brake cavity 3, a reduction transmission mechanism 6 is arranged in the reduction cavity 4, and a sun wheel shaft 13 of the reduction transmission mechanism 6 can penetrate through the reduction cavity 4 and is connected with a chain 8 arranged on a frame 7; the driving motor 1 acts on the reduction transmission mechanism 6 under the regulation of the wet clutch 5, so that the chain 8 is driven by the sun gear shaft 13.

Specifically, the reduction gearbox assembly 2 comprises a shell A with a brake cavity 3 and a shell B with a reduction cavity 4, a wet clutch 5 is arranged in the brake cavity 3, and a reduction transmission mechanism 6 is arranged in the reduction cavity 4; the joint of the shell A and the shell B is in sealing connection; one side of the wet clutch 5 is connected with a motor rotating shaft 9 of the driving motor 1, the other side of the wet clutch is provided with a driven rotating shaft 10, and the driven rotating shaft 10 is in splined connection with a small bevel gear 14 of the speed reduction transmission mechanism 6.

The wet clutch 5 used in the system is a clutch cooled by oil, and the cooling oil not only protects the friction plate, but also enables the power transmission to be smooth and soft.

The three-phase wiring of the driving motor 1 is arranged on the upper portion of the motor, and external wiring and wading prevention are facilitated.

The sun gear bearing 19, the planet carrier bearing 18, the first bearing 16 and the second bearing 17 in the above embodiments can provide axial and radial loads, and the specific model and the load capacity can be calculated by theory.

The speed reduction transmission mechanism 6 comprises a gear ring 15 clamped by the inner wall of the brake cavity 3, three planet wheels 16 are arranged in the gear ring 15, a planet carrier 17 is connected onto the three planet wheels 16, a planet carrier shaft 18 is arranged at the axis position of the planet carrier 17, the end part of the planet carrier shaft 18 is in spline connection with a large bevel gear 19, and the large bevel gear 19 can be meshed with the small bevel gear 14; the bicycle further comprises a sun wheel 20 which can be meshed with the planet wheels 16, the center of the sun wheel 20 is provided with the sun wheel shaft 13, and the sun wheel shaft 13 can penetrate through the speed reduction cavity 4 and is connected with the chain 8 arranged on the frame 7.

As a support form of each key part in the cavity, the method specifically comprises the following steps:

the wet clutch 5 is a normally closed clutch and is clamped by the inner wall of the brake cavity 3; the inner wall of the brake cavity 3 is provided with a cavity groove matched with the dual plate of the wet stop clutch 5 and used for limiting the dual plate; the wet clutch 5 works according to the following principle: the friction plate and the dual plate are bonded and locked, and the friction plate and the dual plate are not bonded and have relative rotating speeds on two sides;

a planet carrier bearing 21 is sleeved on the planet carrier shaft 18, and the planet carrier bearing 21 is clamped by the inner wall of the speed reducing cavity 4;

a clutch front bearing 11 and a clutch rear bearing 12 are respectively arranged along two sides of the wet clutch 5, the clutch front bearing 11 is sleeved with the motor rotating shaft 9, and the clutch rear bearing 12 is sleeved with the driven rotating shaft 10; the clutch front bearing 11 is clamped through the inner wall of the brake cavity 3, and the clutch rear bearing 12 is clamped through the inner wall of the deceleration cavity 4;

the speed reducer further comprises a sun wheel bearing 22 which can be sleeved with the sun wheel shaft 13, and the sun wheel bearing 22 is clamped through the inner wall of the speed reducing cavity 4.

The clutch front bearing 11, the clutch rear bearing 12, the planet carrier bearing 21 and the sun gear bearing 22 can provide axial and radial loads, and the specific model and the load capacity can be obtained through theoretical calculation.

This implementation still be in braking chamber 3 with the junction in speed reduction chamber 4 is provided with sliding seal spare, sliding seal spare cover is established driven spindle 10 for seal the high hydraulic pressure in the braking chamber 3.

In this embodiment, the deceleration cavity 4 is filled with lubricating oil, correspondingly, a through hole 23 capable of being penetrated through by the sun gear shaft 13 is formed in the deceleration cavity 4, the through hole 23 and the sun gear shaft 13 are sealed by an oil seal 24, which is a common name of a general sealing element, and is simply the sealing of the lubricating oil. It is a mechanical element used to seal grease (oil is the most common liquid substance in transmission systems and also refers to the general liquid substance), and it separates the parts needing lubrication from the output parts in the transmission system, so as not to let the lubricating oil leak. Static seals and dynamic seals (generally reciprocating) are called oil seals.

As shown in fig. 2, two sets of pure electric drive systems are required to be prepared and respectively connected with the chains 8 positioned on the two sides of the frame, so that parking, synchronous driving and pivot steering of the skid steer loader are realized.

This embodiment uses two sets of this pure electric drive system of assembly on skid steer loader as an example, including parking, synchro-driven and pivot steering, mode, parking mode and pivot steering mode of going promptly, and the implementation mode specifically is:

parking mode

The hydraulic valve of the wet clutch 5 is controlled by the whole vehicle hydraulic system to be out of work, the wet clutch 5 is in a normally closed state, the driven rotating shaft 10 is locked to rotate, the vehicle cannot move at the moment, and the parking mode is adopted.

Driving mode

The whole vehicle hydraulic system controls the wet clutch 5 to work, the wet clutch 5 is opened, the brake fails, the driving motor 1 drives the driven rotating shaft 10 to rotate, the driven rotating shaft 10 drives the small bevel gear 14 to rotate, the small bevel gear 14 drives the large bevel gear 19 to rotate in a meshed mode, meanwhile, the planet carrier 17 rotates to drive the planet gear 16 to rotate, the planet gear 16 drives the sun gear 20 to rotate, and finally, the sun gear shaft 13 is driven to rotate and is transmitted to the whole vehicle chain 8.

Pivot steering mode

The hydraulic control of the whole vehicle is according to the intention of a driver, one set of the wet clutch 5 of the pure electric drive system for the skid steer loader is locked, and the other set of the wet clutch 5 of the pure electric drive system for the skid steer loader is operated according to the running mode.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any conceivable changes or substitutions by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A pure electric drive system based on a skid-steer loader is characterized by comprising a drive motor and a reduction gearbox assembly which are connected with each other, wherein the reduction gearbox assembly comprises a brake cavity and a deceleration cavity which are connected with each other, a wet clutch is arranged in the brake cavity, a deceleration transmission mechanism is arranged in the deceleration cavity, and a sun wheel shaft of the deceleration transmission mechanism can penetrate through the deceleration cavity and is connected with a chain arranged on a frame; the driving motor acts on the speed reduction transmission mechanism under the regulation of the wet clutch, and the chain is driven by the sun wheel shaft.

2. A pure electric drive system based on a skid steer loader as recited in claim 1, wherein one side of said wet clutch is connected to a motor shaft of said drive motor, and the other side is provided with a driven shaft, said driven shaft is splined to a bevel pinion of said reduction drive mechanism.

3. A pure electric drive system based on a skid steer loader as claimed in claim 2, wherein a sliding seal is provided at the junction of said braking chamber and said decelerating chamber, said sliding seal sleeving said driven rotating shaft.

4. A pure electric drive system based on a skid steer loader as set forth in claim 2, wherein said wet clutch is a normally closed clutch, clamped by an inner wall of said brake cavity.

5. A pure electric drive system based on a skid steer loader as recited in claim 2, wherein a clutch front bearing and a clutch rear bearing are respectively disposed along two sides of said wet clutch, said clutch front bearing is sleeved with said motor shaft, said clutch rear bearing is sleeved with said driven shaft; the clutch front bearing is clamped through the inner wall of the brake cavity, and the clutch rear bearing is clamped through the inner wall of the deceleration cavity.

6. A pure electric drive system based on a skid steer loader as set forth in claim 2, characterized in that the reduction gear comprises a gear ring clamped by the inner wall of the brake chamber, three planet wheels are arranged in the gear ring, a planet carrier is connected to the three planet wheels, a planet carrier shaft is arranged at the axis position of the planet carrier, the end of the planet carrier shaft is in splined connection with a large bevel gear, and the large bevel gear can be meshed with the small bevel gear.

7. A pure electric drive system based on a skid steer loader as set forth in claim 6, wherein a planet carrier bearing is sleeved on said planet carrier shaft, and said planet carrier bearing is clamped by the inner wall of said speed reduction chamber.

8. A pure electric drive system based on a skid steer loader as recited in claim 6, further comprising a sun wheel capable of meshing with said planet wheel, said sun wheel having a center provided with said sun wheel shaft, said sun wheel shaft capable of passing through said speed reduction chamber and connecting with said chain provided on said frame.

9. A pure electric drive system based on a skid steer loader as recited in claim 8, further comprising a sun gear bearing that can be sleeved on said sun gear shaft, said sun gear bearing being held by the inner wall of said speed reduction chamber.

10. A pure electric drive system based on a skid steer loader as claimed in claim 8, wherein said speed reduction chamber is provided with a through hole for passing through said sun gear shaft, and said through hole and said sun gear shaft are sealed by an oil seal.