CN216867428U

CN216867428U - Horizontal variable speed transfer case of loader

Info

Publication number: CN216867428U
Application number: CN202123115032.0U
Authority: CN
Inventors: 胡东创
Original assignee: Hebei Micro Manufacturing Co ltd
Current assignee: Hebei Micro Manufacturing Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-07-01
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a horizontal speed change transfer case of a loader, which relates to the technical field of mechanical transmission, and comprises a gearbox, two speed change shafts, two high-speed gears, two low-speed gears, a shifting fork shaft, two shifting fork rods and a sliding gear, wherein the two speed change shafts are arranged in the gearbox and fixedly connected to one speed change shaft, the shifting fork rods are connected to the shifting fork shafts, the shifting fork shafts and the two speed change shafts are parallel to each other and are distributed in the gearbox in a triangular manner, the sliding gear is connected to the other speed change shaft in a sliding manner, the shifting fork rods are clamped between the two gears of the sliding gear, and the sliding gear can be meshed with the high-speed gear or the low-speed gear. The two-gear speed change can be realized through the gearbox, the two speed change shafts, the high-speed gear, the low-speed gear and the shifting fork structure, and the structure can be miniaturized, so that the miniaturization problem of the gearbox can be solved.

Description

Horizontal variable speed transfer case of loader

Technical Field

The utility model relates to the technical field of mechanical transmission, in particular to a horizontal type variable-speed transfer case of a loader.

Background

The loader is an earth and stone construction machine widely used for construction projects such as roads, railways, buildings, hydropower, ports, mines and the like, the existing loader is relatively large in size and is not suitable for working environments such as greenhouses, small tunnels and the like with relatively small height and width spaces, the loader comprises a power system, a hydraulic system, a transmission system, an electrical system, a working device and the like, a gearbox is an important component of the transmission system, loader accessories on the market are mostly prepared by large and medium sized loaders, the accessories of the loader need to be miniaturized or miniaturized in such a way, the structure of the gearbox needs to be improved, the volume and the shape of the gearbox can be reduced under the condition that the performance of the loader can be guaranteed, and support is provided for the miniaturization of the loader.

SUMMERY OF THE UTILITY MODEL

The utility model provides a horizontal variable-speed transfer case of a loader, which solves the technical problem of size.

In order to solve the technical problem, the horizontal type speed change transfer case of the loader provided by the utility model comprises a gearbox and further comprises:

the two speed change shafts are rotatably connected to the gearbox and are parallel to each other;

the high-speed gear and the low-speed gear are arranged in the gearbox and fixedly connected to one of the speed changing shafts, and the high-speed gear and the low-speed gear are arranged at two ends of a shaft lever in the gearbox in the speed changing shaft;

the gear shifting fork is connected to the shifting fork shaft, and the shifting fork shaft and the two speed changing shafts are parallel to each other and are distributed in the gearbox in a triangular manner;

the shifting fork is clamped between two gears of the sliding gear, and the sliding gear can be meshed with a high-speed gear or a low-speed gear.

Furthermore, two ends of one of the two speed change shafts are arranged on the outer side of the gearbox and are both provided with splines, one end of the one speed change shaft extends to the outer side of the gearbox, and a sleeve is arranged at a position on the gearbox, which is butted with the speed change shaft, of the gearbox.

Furthermore, the gear shifting shaft is movably connected to the gearbox, and the gear shifting fork is fixedly connected to the gear shifting shaft.

Furthermore, the gear shifting shaft is fixedly connected to the upper gear box, and the gear shifting fork is connected to the gear shifting shaft in a sliding mode.

Furthermore, the high-speed gear and the low-speed gear are connected by a shaft sleeve, and the high-speed gear and the low-speed gear are close to two sides of the inner wall of the gearbox;

the sliding gear is connected with a speed changing shaft corresponding to the sliding gear through a spline, and the length of the spline along the speed changing shaft is at least the maximum distance between the high-speed gear and the low-speed gear.

Furthermore, be equipped with between two gears of glide gear and be convenient for shift fork male shifting fork groove, lie in on two gears be connected with the wear plate on the side in shifting fork groove, the wear plate adopts the cross-section to be trapezoidal ring plate.

Furthermore, the inner wall of one end, inserted into the shifting fork groove, of the shifting fork is connected with an anti-abrasion block.

Compared with the prior art, the horizontal speed change transfer case of the loader has the following beneficial effects:

the two-gear speed change can be realized through the gearbox, the two speed change shafts, the high-speed gear, the low-speed gear and the shifting fork structure, and the structure can be miniaturized, so that the miniaturization problem of the gearbox can be solved;

the wear-resistant plate and the wear-resistant block are arranged, so that the technical problem of serious friction between the miniaturized shifting fork and the sliding gear is solved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the slip gear of the present invention;

FIG. 3 is a schematic view of a shift fork of the present invention;

FIG. 4 is a side view of FIG. 1;

FIG. 5 is a schematic view of a driving mode of the shift fork according to the present invention;

in the figure: 1. a gearbox; 2. a speed change shaft; 3. a high-speed gear; 4. a low-speed gear; 5. a fork shaft; 6. a gear shifting fork; 61. an anti-abrasion block; 7. a slip gear; 71. a gear; 72. a shift fork groove; 73. a wear plate; 8. a sleeve; 9. a shaft sleeve; 10. a rotating shaft; 11. rotating the rod; 12. a connecting rod; 13. a connecting plate.

Detailed Description

As shown in fig. 1 and 4, the horizontal speed-changing transfer case of the loader comprises a gearbox 1, a speed-changing shaft 2, a high-speed gear 3, a low-speed gear 4, a shifting fork shaft 5, a shifting fork 6 and a sliding gear 7, wherein the speed-changing shaft 2 is provided with two parallel gears which are rotatably connected to the gearbox 1, the sliding gear 7, the high-speed gear 3, the low-speed gear 4 and the shifting fork 6 are all arranged in the gearbox, two ends of one speed-changing shaft 2 extend to the outer side of the gearbox, and splines are processed at two ends of the one speed-changing shaft; one end of the other speed change shaft 2 extends to the outer side of the gearbox, the other end of the other speed change shaft is rotatably connected into the gearbox, the outer side of the gearbox 1 is fixedly connected with a sleeve 8, and the speed change shaft 2 is arranged in the sleeve 8.

According to the requirement, as shown in fig. 1, the sliding gear 7 can be connected with one of the speed change shafts 2 in a sliding way; the high-speed gear 3 and the low-speed gear 4 are coaxially connected to another speed changing shaft 2, the high-speed gear 3 and the low-speed gear 4 are arranged at two ends of a shaft lever in the speed changing box in the speed changing shaft, the high-speed gear 3 and the low-speed gear 4 rotate in the speed changing box 1 but do not move along the speed changing shaft 2, and the following method can be adopted: the high-speed gear and the low-speed gear are fixedly connected through a shaft sleeve 9, and the high-speed gear and the low-speed gear are close to two sides of the inner wall of the gearbox.

As shown in fig. 1, the shift fork 6 is connected on the shift shaft 5, the shift shaft 5 and two the change shaft 2 is parallel to each other and is in triangular distribution in the gearbox, preferably close to the top of the change shaft 2 connected with the sliding gear 7, the shift fork 6 is blocked between two gears 71 of the sliding gear 7, the sliding gear can be engaged with a high-speed gear or a low-speed gear in the gearbox.

It should be noted that the connection relationship between the shift shaft 5 and the shift fork 6 can be one of the following two ways: (1) the gear shifting shaft 5 is movably connected to the gearbox 2, the gear shifting fork 6 is fixedly connected to the gear shifting shaft, the gear shifting shaft is driven to drive the gear shifting fork to move on the axis by driving the gear shifting shaft, and a driving device capable of driving the gear shifting shaft to move is mounted; (2) the gear shifting shaft 5 is fixedly connected to the upper gearbox 2, the gear shifting fork 6 is connected to the gear shifting shaft 5 in a sliding mode, the gear shifting fork is driven to move on the gear shifting shaft, the driving of the gear shifting fork adopts the structural mode of FIG. 5, the gear shifting fork is connected with a rotating shaft 10 through a connecting rod 12, the rotating shaft 10 is installed on a connecting plate 13, a rotating rod 11 connected with the rotating shaft 10 is arranged above the connecting plate 13, the rotating rod 11 drives the gear shifting fork to move along the axial direction through the rotating shaft, and the connecting plate 13 can be a cover of the gearbox; the shifting fork can be moved in the gearbox in both the two modes.

In order to ensure the back and forth movement of the sliding gear 7 between the high-speed gear 3 and the low-speed gear 4, the sliding gear and the corresponding speed change shaft are connected through a spline, wherein the length of the spline along the speed change shaft is at least the maximum distance between the high-speed gear and the low-speed gear, so that the movement of the sliding gear on the speed change shaft is ensured.

For reducing the friction strength between the shifting fork 6 and the sliding gear 7 and reducing the loss of parts, for this reason, as shown in fig. 2, a fork slot 72 which is convenient for the shifting fork to insert is arranged between two gears 71 of the sliding gear, and the two gears are connected with an anti-wear plate 73 on the side surface of the fork slot, and the anti-wear plate adopts a circular plate with a trapezoidal section, so that when moving, the circular plate can reduce the friction and damage of the shifting fork to the gear surface; furthermore, the two sides of the inner wall of one end, inserted into the shifting fork groove, of the shifting fork are both connected with wear-resistant blocks 61, so that the insertion end of the shifting fork is protected.

In the above, one end of the speed changing shaft is rotationally connected to the gearbox and serves as an input shaft, the other end of the speed changing shaft extending out of the gearbox serves as an output shaft, and the two ends of the output shaft are respectively used for connecting flanges which are connected with the transmission shaft; the sleeve is connected to the gearbox 1 in a flange mode in a welding mode, a hydraulic motor or a driving motor is installed at the other end of the sleeve, and the hydraulic motor or the driving motor is connected with the input shaft; the two ends of the output shaft are processed into splines or single keys, so that a transmission shaft flange or other shaft sleeve couplings and other structures for outputting power outwards are installed.

The working principle is as follows: the position of the sliding gear on the input shaft is changed through the gear shifting fork, power is transmitted to the high-speed gear or the low-speed gear through the sliding gear after being input from the input shaft, so that high-speed and low-speed changes are achieved, the speeds corresponding to different gears are obtained, and finally the power is output by the output shaft, and four-wheel drive is achieved.

Claims

1. The utility model provides a horizontal variable speed transfer case of loader, includes gearbox (1), its characterized in that still includes:

the two speed change shafts (2) are rotatably connected to the gearbox and are parallel to each other;

the high-speed gear (3) and the low-speed gear (4) are arranged in the gearbox and fixedly connected to one of the speed changing shafts, and the high-speed gear and the low-speed gear are arranged at two ends of a shaft lever in the gearbox in the speed changing shaft;

the gear shifting fork is connected to the shifting fork shaft (5), and the shifting fork shaft and the two speed changing shafts are parallel to each other and are distributed in the gearbox in a triangular shape;

the shifting fork is clamped between two gears (71) of the sliding gear, and the sliding gear can be meshed with a high-speed gear or a low-speed gear.

2. The horizontal speed-changing transfer case of the loader according to claim 1, characterized in that two ends of one of the two speed-changing shafts are arranged on the outer side of the gearbox and are both provided with splines, one end of one speed-changing shaft extends to the outer side of the gearbox, and a sleeve (8) is arranged on the gearbox at a position abutting against the speed-changing shaft.

3. The horizontal type speed-changing transfer case of the loader according to claim 1, wherein a shift shaft is movably connected to the gearbox, and the shift fork is fixedly connected to the shift shaft.

4. The horizontal variable speed transfer case of a loader of claim 1 wherein the gearbox is fixedly connected to a shift shaft and the shift fork is slidably connected to the shift shaft.

5. The horizontal speed-changing transfer case of the loader as claimed in claim 1, wherein the high-speed gear and the low-speed gear are connected by a shaft sleeve (9), and the high-speed gear and the low-speed gear are close to two sides of the inner wall of the speed-changing box;

6. The horizontal speed-changing transfer case of the loader as claimed in claim 1, wherein a shift fork groove (72) for facilitating insertion of the shift fork is provided between two gears of the shifting gear, and a wear plate (73) is connected to the two gears on the side of the shift fork groove, and the wear plate is a circular ring plate with a trapezoidal cross section.

7. The horizontal speed-changing transfer case of the loader as claimed in claim 6, wherein the shift fork is clamped into one end of the fork slot (72) and an anti-abrasion block (61) is connected to the inner wall of the one end of the fork slot.