Gearbox of cross-country forklift

Abstract

The utility model discloses a cross-country forklift gearbox which comprises a turbine shaft, a forward gear clutch shaft, a reverse gear clutch shaft, an intermediate shaft and a rear output shaft which are arranged in parallel, one end of the rear output shaft is provided with a front output flange shaft rotationally connected with the rear output shaft, and the turbine shaft is arranged in a torque converter in a penetrating mode. The forward gear clutch shaft, the reverse gear clutch shaft, the intermediate shaft and the rear output shaft are rotationally installed in the gearbox shell. An output flange is installed at one end of the rear output shaft, a sliding sleeve capable of sliding transversely is arranged at the joint of the rear output shaft and the front output flange in a sleeved mode, the sliding sleeve is connected with a shifting fork, and the shifting fork is driven by an air cylinder. The gearbox of the cross-country forklift truck has the advantages of being firm, durable and stable in transmission, driving force transmission efficiency is guaranteed through convenient and fast switching of a pneumatic driving four-wheel-drive mode and a pneumatic driving two-wheel-drive mode, and a guarantee is provided for the cross-country forklift truck to adapt to various operation working conditions.

Description

Technical Field

[0001] The utility model relates to a gearbox for an off-road forklift truck, belonging to the technical field of speed change devices. Background Art

[0002] Off-road forklifts are used to load and unload materials at material distribution centers with poor road conditions such as airports, docks, and stations. They have good mobility and reliable off-road performance. The speed of off-road forklifts is higher than that of ordinary forklifts, and their mobility is obvious. They have large engine power and high off-road performance.

[0003] Currently, most of the gearboxes used on off-road forklifts are four-wheel drive gearboxes with a fixed drive mode. They can only drive the construction machinery in one way, which makes it inconvenient to switch the drive mode according to different road conditions, resulting in poor handling performance. In addition, the four-wheel drive transmission mode makes the driving force transmission efficiency low and the fuel economy poor. There is still a lot of room for improvement in the applicable working conditions.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] In view of the deficiencies in the background technology, the utility model provides an off-road forklift gearbox, which has the advantages of being sturdy, durable and having smooth transmission. The convenient switching between the pneumatically driven four-wheel drive and two-wheel drive modes ensures the efficiency of driving force transmission, thus providing a guarantee for the off-road forkloader to adapt to various operating conditions.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A gearbox for an off-road forklift truck, comprising a turbine shaft, a forward clutch shaft, a reverse clutch shaft, an intermediate shaft and a rear output shaft arranged in parallel, one end of the rear output shaft is provided with a front output flange shaft rotatably connected thereto, the turbine shaft is passed through the interior of a torque converter, and the forward clutch shaft, the reverse clutch shaft, the intermediate shaft and the rear output shaft are rotatably mounted inside a gearbox housing;

[0008] An output flange is installed at one end of the rear output shaft, and a sliding sleeve capable of sliding laterally is sleeved at the connection between the rear output shaft and the front output flange shaft. The sliding sleeve is connected to a shift fork, and the shift fork is driven by a cylinder.

[0009] Furthermore, a pump port driving gear and an input gear are installed on the turbine shaft, the pump port driving gear is meshed and connected with the pump port driven gear, and the pump port driven gear is installed on the pump sleeve.

[0010] Furthermore, the forward gear clutch shaft is sequentially mounted with a low-speed gear driving disc hub gear, a forward gear clutch and a high-speed gear disc hub gear, and the low-speed gear driving disc hub gear is meshingly connected with the input gear.

[0011] Furthermore, the reverse clutch shaft is sequentially mounted with a low-speed gear driven disc hub gear, a reverse clutch, a high-speed gear driving gear and a low-speed gear driving gear, and the high-speed gear driving gear is meshingly connected with the high-speed gear disc hub gear.

[0012] Furthermore, an intermediate gear, a high-speed gear driven gear and a low-speed gear driven gear are sequentially mounted on the intermediate shaft. The high-speed gear driven gear and the low-speed gear driven gear are integrally formed and are slidably arranged on the intermediate shaft. The high-speed gear driven gear can be meshed and connected with the high-speed gear driving gear, and the low-speed gear driven gear can be meshed and connected with the low-speed gear driving gear.

[0013] Furthermore, an output gear is installed on the rear output shaft, and the output gear is meshed and connected with the intermediate gear.

[0014] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0015] The sliding sleeve in the utility model is connected with the shift fork, and the shift fork is driven by the cylinder. When the sliding sleeve is not engaged with the front output flange shaft, the gearbox is in a two-wheel drive state; when the sliding sleeve is engaged with the rear output shaft and the front output flange shaft at the same time, the rear output shaft drives the front output flange shaft to rotate, and the gearbox is in a four-wheel drive state; the mode switching adopts pneumatic drive, which is easy to operate and ensures the driving force transmission efficiency, providing a guarantee for the off-road forklift to adapt to various working conditions; the overall structure has the advantages of being sturdy and durable and having smooth transmission.

[0016] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is an enlarged structural diagram of the upper part of the main body of the utility model;

[0019] Figure 3 It is an enlarged structural view of the lower part of the main body of the utility model.

[0020] In the figure, 1-pump port driving gear, 2-pump port driven gear, 3-input gear, 4-low speed gear driving disc hub gear, 5-high speed gear disc hub gear, 6-low speed gear driven disc hub gear, 7-high speed gear driving gear, 8-low speed gear driving gear, 9-intermediate gear, 10-high speed gear driven gear, 11-low speed gear driven gear, 12-output gear, 13-turbine shaft, 14-forward gear clutch shaft, 15-reverse gear clutch shaft, 16-intermediate shaft, 17-rear output shaft, 18-torque converter, 19-forward gear clutch, 20-reverse gear clutch, 21-output flange, 22-front output flange shaft, 23-slip sleeve, 24-shift fork. DETAILED DESCRIPTION

[0021] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0022] like Figure 1-Figure 3 As shown together, the utility model provides an off-road forklift gearbox, including a turbine shaft 13, a forward clutch shaft 14, a reverse clutch shaft 15, an intermediate shaft 16 and a rear output shaft 17 arranged in parallel, one end of the rear output shaft 17 is provided with a front output flange shaft 22 rotatably connected thereto, the turbine shaft 13 is passed through the inside of the torque converter 18, and the forward clutch shaft 14, the reverse clutch shaft 15, the intermediate shaft 16 and the rear output shaft 17 are rotatably installed inside the gearbox housing.

[0023] An output flange 21 is installed at one end of the rear output shaft 17, and the output flange 21 and the front output flange shaft 22 can both output the speed after the gear shift; a sliding sleeve 23 that can slide laterally is sleeved at the connection between the rear output shaft 17 and the front output flange shaft 22, and the sliding sleeve 23 can transmit the power of the rear output shaft 17 to the front output flange shaft 22, so that the rear output shaft 17 and the front output flange shaft 22 rotate synchronously; the sliding sleeve 23 is connected to the shift fork 24, and the shift fork 24 is driven by the cylinder, and the cylinder drives the sliding sleeve 23 to slide along the shaft through the shift fork 24.

[0024] When the sleeve 23 is meshed with the rear output shaft 17 and the front output flange shaft 22 at the same time, the rear output shaft 17 drives the front output flange shaft 22 to rotate, and the gearbox is in a four-wheel drive state; when the sleeve 23 is not meshed with the front output flange shaft 22, the gearbox is in a two-wheel drive state (rear-wheel drive state).

[0025] The turbine shaft 13 is provided with a pump port driving gear 1 and an input gear 3 . The pump port driving gear 1 is meshedly connected with a pump port driven gear 2 . The pump port driven gear 2 is installed on the pump sleeve.

[0026] The forward gear clutch shaft 14 is sequentially mounted with a low-speed gear driving disc hub gear 4 , a forward gear clutch 19 and a high-speed gear disc hub gear 5 , and the low-speed gear driving disc hub gear 4 is meshedly connected with the input gear 3 .

[0027] The reverse clutch shaft 15 is sequentially mounted with the low-speed gear driven disc hub gear 6 , the reverse clutch 20 , the high-speed gear driving gear 7 and the low-speed gear driving gear 8 , and the high-speed gear driving gear 7 is meshedly connected with the high-speed gear disc hub gear 5 .

[0028] The intermediate shaft 16 is sequentially mounted with an intermediate gear 9, a high-speed gear driven gear 10 and a low-speed gear driven gear 11. The high-speed gear driven gear 10 and the low-speed gear driven gear 11 are integrally formed and slidably arranged on the intermediate shaft 16. The high-speed gear driven gear 10 can be meshed and connected with the high-speed gear driving gear 7, and the low-speed gear driven gear 11 can be meshed and connected with the low-speed gear driving gear 8.

[0029] The rear output shaft 17 is provided with an output gear 12 , which is meshedly connected with the intermediate gear 9 .

[0030] The power transmission route of the utility model:

[0031] Low speed first gear: pump port driving gear 1 → input gear 3 → low speed gear driving hub gear 4 → low speed gear driven hub gear 6 → high speed gear driving gear 7 → low speed gear driving gear 8 → low speed gear driven gear 11 → high speed gear driven gear 10 → intermediate gear 9 → output gear 12 → output flange 21;

[0032] Low-speed second gear: pump port driving gear 1 → input gear 3 → low-speed gear driving hub gear 4 → low-speed gear driven hub gear 6 → high-speed gear driving gear 7 → high-speed gear driven gear 10 → intermediate gear 9 → output gear 12 → output flange 21;

[0033] High speed first gear: pump port driving gear 1 → input gear 3 → low speed gear driving disc hub gear 4 → high speed gear disc hub gear 5 → high speed gear driving gear 7 → low speed gear driving gear 8 → low speed gear driven gear 11 → high speed gear driven gear 10 → intermediate gear 9 → output gear 12 → output flange 21;

[0034] High-speed second gear: pump port driving gear 1 → input gear 3 → low-speed gear driving disc hub gear 4 → high-speed gear disc hub gear 5 → high-speed gear driving gear 7 → high-speed gear driven gear 10 → intermediate gear 9 → output gear 12 → output flange 21.

[0035] Driving mode: When the sleeve 23 is not engaged with the front output flange shaft 22, the gearbox is in a two-wheel drive state (rear-wheel drive state); when the sleeve 23 is engaged with the rear output shaft 17 and the front output flange shaft 22 at the same time, the rear output shaft 17 drives the front output flange shaft 22 to rotate, and the gearbox is in a four-wheel drive state. The mode switching adopts pneumatic drive, which is easy to operate, and the overall structure has the advantages of being sturdy and durable, and the transmission is smooth.

[0036] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A gearbox for an off-road forklift, characterized in that: The invention comprises a turbine shaft (13), a forward clutch shaft (14), a reverse clutch shaft (15), an intermediate shaft (16) and a rear output shaft (17) arranged in parallel, one end of the rear output shaft (17) is provided with a front output flange shaft (22) rotatably connected thereto, the turbine shaft (13) is inserted into the interior of the torque converter (18), and the forward clutch shaft (14), the reverse clutch shaft (15), the intermediate shaft (16) and the rear output shaft (17) are rotatably mounted inside the transmission housing; An output flange (21) is mounted on one end of the rear output shaft (17), a sliding sleeve (23) capable of sliding laterally is sleeved at the connection between the rear output shaft (17) and the front output flange shaft (22), the sliding sleeve (23) is connected to a shift fork (24), and the shift fork (24) is driven by a cylinder.

2. The off-road forklift gearbox according to claim 1, characterized in that: A pump port driving gear (1) and an input gear (3) are mounted on the turbine shaft (13); the pump port driving gear (1) is meshedly connected with the pump port driven gear (2); and the pump port driven gear (2) is mounted on the pump sleeve.

3. The off-road forklift gearbox according to claim 2, characterized in that: The forward gear clutch shaft (14) is sequentially mounted with a low-speed gear driving disc hub gear (4), a forward gear clutch (19) and a high-speed gear disc hub gear (5), and the low-speed gear driving disc hub gear (4) is meshingly connected with the input gear (3).

4. The off-road forklift gearbox according to claim 3, characterized in that: The reverse clutch shaft (15) is sequentially mounted with a low-speed gear driven disc hub gear (6), a reverse clutch (20), a high-speed gear driving gear (7) and a low-speed gear driving gear (8), and the high-speed gear driving gear (7) is meshingly connected with the high-speed gear disc hub gear (5).

5. The off-road forklift gearbox according to claim 4, characterized in that: An intermediate gear (9), a high-speed gear driven gear (10) and a low-speed gear driven gear (11) are sequentially mounted on the intermediate shaft (16); the high-speed gear driven gear (10) and the low-speed gear driven gear (11) are integrally formed and slidably arranged on the intermediate shaft (16); the high-speed gear driven gear (10) can be meshedly connected with the high-speed gear driving gear (7), and the low-speed gear driven gear (11) can be meshedly connected with the low-speed gear driving gear (8).

6. The off-road forklift gearbox according to claim 5, characterized in that: An output gear (12) is mounted on the rear output shaft (17), and the output gear (12) is meshedly connected with the intermediate gear (9).

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