CN215763169U

CN215763169U - Horizontal reduction gearbox with parking brake

Info

Publication number: CN215763169U
Application number: CN202122099101.7U
Authority: CN
Inventors: 刘成; 朱芸; 杨容; 赖学文
Original assignee: Changsha Zhongchuan Gearbox Co ltd
Current assignee: Changsha Zhongchuan Gearbox Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-02-08
Anticipated expiration: 2031-09-01

Abstract

The utility model discloses a transverse reduction gearbox with a parking brake, which comprises a box body, a differential and a brake, wherein an input shaft, a first transmission shaft and a second transmission shaft are arranged in the box body, a driving gear is arranged on the input shaft, a first transmission gear is arranged on the first transmission shaft, a second driving transmission gear and a second driven transmission gear are arranged on the second transmission shaft, the driving gear is meshed with the first transmission gear, the first transmission gear is meshed with the second driving transmission gear, the second driven transmission gear is meshed with a gear ring of the differential, one end of the input shaft extends out of the box body, an extending end of the input shaft is sleeved with a matching flange capable of rotating along with the input shaft, the brake is arranged on the matching flange, a brake drum of the brake is connected with the matching flange, and a base of the brake is connected with the box body. The brake torque of the utility model directly acts on the input end of the motor, the performance of the brake can be utilized to the maximum extent, the safety of parking formulation is increased, the space of the whole vehicle is saved, and the structure of the whole vehicle is more compact.

Description

Horizontal reduction gearbox with parking brake

Technical Field

The utility model relates to the technical field of transmission, in particular to a transverse reduction gearbox with a parking brake.

Background

At present, the parking braking structures used by domestic electric forklifts are mostly arranged on two sides of a drive axle, the required parking braking torque is large, and the performance requirement on a brake assembly is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a transverse reduction gearbox with a parking brake, wherein the transverse reduction gearbox directly acts on the input end of a motor through braking torque, can utilize the performance of the brake to the maximum extent, increases the safety of parking braking, saves the whole vehicle space and enables the whole vehicle structure to be more compact.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a transverse reduction gearbox with a parking brake comprises a box body, a differential and a brake, wherein an input shaft, a first transmission shaft and a second transmission shaft are arranged in the box body, the differential mechanism is arranged on one side of the box body, the input shaft is arranged on one side of the box body far away from the differential mechanism, the input shaft is provided with a driving gear, the first transmission shaft is provided with a first transmission gear, the second transmission shaft is provided with a second main transmission gear and a second auxiliary transmission gear, the driving gear is meshed with a first transmission gear which is meshed with a second main transmission gear, the second driven transmission gear is meshed with a gear ring of the differential, one end of the input shaft extends out of the box body, a matching flange capable of rotating along with the input shaft is sleeved at the extending end, the brake is installed on the matching flange, a brake drum of the brake is connected with the matching flange, and a base of the brake is connected with the box body.

As a further improvement of the technical scheme, the material of the brake drum is 20 steel.

As a further improvement of the technical scheme, a spline and a spline groove are arranged between the matching flange and the input shaft.

As a further improvement of the technical scheme, the matching flange is locked on the input shaft through an I-shaped hexagonal slotted nut and a cotter pin.

As a further improvement of the technical scheme, the brake drum is connected with a matching flange through bolts, and the base is connected with the box body through bolts.

As a further improvement of the above technical solution, the input shaft, the first transmission shaft and the second transmission shaft are arranged in parallel.

As a further improvement of the above technical solution, the first transmission gear is an idler gear.

As a further improvement of the above technical solution, a case cover is disposed on the case body, one end of the input shaft is supported on the case body, the other end of the input shaft penetrates through the case cover, a first bearing is disposed between the input shaft and the case body, and between the input shaft and the case cover, two ends of the first transmission shaft are respectively supported on the case body and the case cover through second bearings, and two ends of the second transmission shaft are respectively supported on the case body and the case cover through third bearings.

As a further improvement of the technical scheme, the differential mechanism comprises a shell, a gear ring, a cross shaft, a planetary gear and a half axle gear, wherein the cross shaft, the planetary gear and the half axle gear are arranged in the shell, two ends of the shell are connected with a box body through a fourth bearing, the gear ring is sleeved on the shell and is fixedly connected with the shell, the planetary gear is arranged on the cross shaft, and the two half axle gears are both meshed with the planetary gear.

Compared with the prior art, the utility model has the advantages that:

compared with a reduction gearbox without the parking brake function, the transverse reduction gearbox with the parking brake has the advantages that the parking brake function is added, the brake is directly arranged on the input shaft, the brake torque directly acts on the input end of the motor, the performance of the brake can be utilized to the maximum extent, the safety of parking formulation is improved, the parking brake is directly arranged on the reduction gearbox body, the whole vehicle space is saved, and the whole vehicle structure is more compact.

Drawings

FIG. 1 is a schematic structural diagram of a transverse reduction gearbox with a parking brake of the present invention.

The reference numerals in the figures denote:

1. a box body; 11. a box cover; 2. a differential mechanism; 21. a housing; 22. a ring gear; 23. a cross shaft; 24. a planetary gear; 25. a half shaft gear; 26. reaming a hole bolt; 3. a brake; 31. a brake drum; 32. a base; 4. an input shaft; 41. a driving gear; 5. a first drive shaft; 51. a first drive gear; 6. a second drive shaft; 61. a second main drive gear; 62. a second slave drive gear; 7. fitting a flange; 71. a type I hexagonal slotted nut; 72. a cotter pin; 8. a bolt; 91. a first bearing; 92. a second bearing; 93. a third bearing; 931. a third bearing cover; 94. and a fourth bearing.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples of the specification.

The transverse reduction gearbox with the parking brake is mainly suitable for electric forklifts.

As shown in fig. 1, the transverse reduction gearbox with the parking brake of the embodiment includes a box 1, a differential 2 and a brake 3, an input shaft 4, a first transmission shaft 5 and a second transmission shaft 6 are arranged in the box 1, the differential 2 is arranged at one side of the box 1, the input shaft 4 is arranged at one side of the box 1 far away from the differential 2, a driving gear 41 is arranged on the input shaft 4, a first transmission gear 51 is arranged on the first transmission shaft 5, a second main transmission gear 61 and a second auxiliary transmission gear 62 are arranged on the second transmission shaft 6, the driving gear 41 is engaged with the first transmission gear 51, the first transmission gear 51 is engaged with the second main transmission gear 61, the second auxiliary transmission gear 62 is engaged with a gear ring 22 of the differential 2, one end of the input shaft 4 extends out of the box 1 and is sleeved with a matching flange 7 capable of rotating with the input shaft 4, the brake 3 is arranged on the matching flange 7, a brake drum 31 of the brake 3 is connected with the matching flange 7, the base 32 of the brake 3 is connected to the housing 1.

The input shaft 4 is coupled to an output shaft of a vehicle driving motor (not shown) of the electric counter-weight forklift, the driving gear 41 is meshed with the first transmission gear 51 to form a first stage cylindrical helical gear transmission, the first transmission gear 51 is meshed with the second driving gear 61 to form a second stage cylindrical helical gear transmission, and the second driven transmission gear 62 is meshed with the gear ring 22 of the differential 2 to form a third stage cylindrical helical gear transmission. When the whole vehicle driving motor is connected with the reduction gearbox, the axis of an output shaft of the whole vehicle driving motor is in a standing type, the reduction gearbox is in a horizontal type in view of the connection form with a power source, when the whole vehicle driving motor works, the output shaft of the whole vehicle driving motor is connected with the input shaft 4 through a spline, power and motion are transmitted to the gear ring 22 through the input shaft 4, the driving gear 41, the first transmission gear 51, the second main transmission gear 61 and the second auxiliary transmission gear 62, the gear ring 22 is transmitted to the differential mechanism 2, and the differential mechanism 2 drives tires to rotate forwards or backwards through the output shaft, so that the whole vehicle can move forwards or backwards. The brake 3 is connected with one end of the input shaft 4 extending out of the box body 1 through a matching flange 7, and parking braking is realized through the clutch of the brake drum 31 and the base 32.

The horizontal formula reducing gear box of taking parking brake of this embodiment compares with the reducing gear box that does not take the parking braking function, has increased the function of parking braking, and this structure brake direct mount is on input shaft 4, and braking moment of torsion direct action can utilize the performance of stopper to the at utmost, increases the security that the parking was formulated, and parking brake direct mount has practiced thrift whole car space on the reduction gear box, enables whole car structure compacter.

In this embodiment, the brake drum 31 of the brake 3 is made of 20 steel, and since the brake 3 is directly mounted on the input shaft 4, the rotating speed of the input end of the motor is high, the existing brake 3 cannot meet the performance requirement, and the dynamic balance test is completed by changing the material of the brake drum 31, preferably 20 steel, so that the brake can be well adapted to the high rotating speed.

In this embodiment, splines and spline grooves (not shown) are provided between the mating flange 7 and the input shaft 4. The mating flange 7 is locked to the input shaft 4 by the i-type hexagonal slotted nut 71 and the cotter pin 72, and the cotter pin 72 prevents the i-type hexagonal slotted nut 71 from loosening.

In this embodiment, a case cover 11 is disposed on the case 1, one end of the input shaft 4 is supported on the case 1, the other end of the input shaft passes through the case cover 11, a first bearing 91 is disposed between the input shaft 4 and the case 1 and the case cover 11, two ends of the first transmission shaft 5 are supported on the case 1 and the case cover 11 through second bearings 92, and two ends of the second transmission shaft 6 are supported on the case 1 and the case cover 11 through third bearings 93. The third bearing 93 at one end of the casing 1 is provided with a third bearing cover 931, the third bearing cover 931 is in contact with the third bearing 93 through a spacer (not shown in the drawing), and the second transmission shaft 6 is in contact with the third bearing 93 for initial positioning for assembling the second transmission shaft 6. The third bearing 93 is provided with a through hole, and the clearance of the third bearing 93 is adjusted by matching with an adjusting gasket during convenient assembly.

The input shaft 4, the first transmission shaft 5 and the second transmission shaft 6 are arranged in parallel. The first transmission shaft 5 and the second transmission shaft 6 do not extend out of the box body 1 and the box cover 11, and the risk of oil leakage is reduced. The first bearing 91 is preferably a deep groove ball bearing, the second bearing 92 is preferably a deep groove ball bearing, and the third bearing 93 is preferably a tapered roller bearing.

In the present embodiment, the first transmission gear 51 is an idler gear. The idler gear and the first transmission shaft 5 are integrally formed, the rigidity is better, the idler gear can adjust the input span and the output span, the longitudinal space can be effectively saved, and the structure of the reduction gearbox is more compact. The second bearing 92 is mounted on the outside of the idler shaft and can be used for large tonnage machines.

In this embodiment, the brake drum 31 is connected to the mating flange 7 by bolts 8, and the base 32 is connected to the case cover 11 by bolts 8.

In this embodiment, the differential 2 includes a case 21, a ring gear 22, and a spider 23, a planetary gear 24, and a side gear 25 that are disposed in the case 21, both ends of the case 21 are connected to the case 1 through a fourth bearing 94, the ring gear 22 is sleeved on the case 21 and is fixedly connected to the case 21, the planetary gear 24 is disposed on the spider 23, and two side gears 25 are disposed and are all engaged with the planetary gear 24. The ring gear 22 is fixedly connected to the housing 21 by means of a hinge bore bolt 26, and the fourth bearing 94 is preferably a deep groove ball bearing. After power and motion are transmitted to the gear ring 22 through the input shaft 4, the driving gear 41, the first transmission gear 51, the second main transmission gear 61 and the second sub transmission gear 62, the gear ring 22 is transmitted to the housing 21 of the differential 2, the housing 21 is transmitted to the planetary gear 24 through the internal cross shaft 23, the planetary gear 24 is meshed with the side gear 25, and the tire is driven to rotate forward or backward through an internal spline at the side gear 25 and a half shaft (not shown in the figure), so that the whole vehicle can move forward or backward.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the utility model, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims

1. The utility model provides a take parking brake's horizontal formula reducing gear box which characterized in that: including box (1), differential mechanism (2) and stopper (3), be equipped with input shaft (4), first transmission shaft (5) and second transmission shaft (6) in box (1), one side of box (1) is located in differential mechanism (2), one side of differential mechanism (2) is kept away from in box (1) is located in input shaft (4), be equipped with driving gear (41) on input shaft (4), be equipped with first drive gear (51) on first transmission shaft (5), be equipped with second final drive gear (61) and second from drive gear (62) on second transmission shaft (6), driving gear (41) and first drive gear (51) meshing, first drive gear (51) and second final drive gear (61) meshing, the second is followed ring gear (22) meshing of drive gear (62) and differential mechanism (2), input shaft (4) one end stretches out box (1) and stretches out the pot head and has and can follow input shaft (4) pivoted The brake device comprises a matching flange (7), the brake (3) is installed on the matching flange (7), a brake drum (31) of the brake (3) is connected with the matching flange (7), and a base (32) of the brake (3) is connected with the box body (1).

2. The transverse reduction gearbox with the parking brake as recited in claim 1, wherein: the brake drum (31) is made of 20 steel.

3. The transverse reduction gearbox with the parking brake as recited in claim 1, wherein: and a spline groove are arranged between the matching flange (7) and the input shaft (4).

4. The transverse reduction gearbox with the parking brake as recited in claim 1, wherein: the matching flange (7) is locked on the input shaft (4) through an I-shaped hexagonal slotted nut (71) and a cotter pin (72).

5. The transverse reduction gearbox with the parking brake as claimed in any one of claims 1 to 4, wherein: the brake drum (31) is connected with the matching flange (7) through a bolt (8), and the base (32) is connected with the box body (1) through the bolt (8).

6. The transverse reduction gearbox with the parking brake as claimed in any one of claims 1 to 4, wherein: the input shaft (4), the first transmission shaft (5) and the second transmission shaft (6) are arranged in parallel.

7. The transverse reduction gearbox with the parking brake as claimed in any one of claims 1 to 4, wherein: the first transmission gear (51) is an idler gear.

8. The transverse reduction gearbox with the parking brake as claimed in any one of claims 1 to 4, wherein: be equipped with case lid (11) on box (1), input shaft (4) one end is supported on box (1), and the other end passes case lid (11), and is equipped with first bearing (91) between input shaft (4) and box (1) and case lid (11), first transmission shaft (5) both ends are supported on box (1) and case lid (11) through second bearing (92) respectively, second transmission shaft (6) both ends are supported on box (1) and case lid (11) through third bearing (93) respectively.

9. The transverse reduction gearbox with the parking brake as claimed in any one of claims 1 to 4, wherein: differential mechanism (2) include casing (21), ring gear (22) and locate cross axle (23), planetary gear (24) and side gear (25) in casing (21), casing (21) both ends are connected with box (1) through fourth bearing (94), ring gear (22) cover on casing (21) and with casing (21) fixed connection, planetary gear (24) are located on cross axle (23), side gear (25) set up two, all with planetary gear (24) meshing.