Electrically-driven gearbox for engineering machinery

Abstract

The utility model discloses an electric drive gearbox for engineering machinery, which comprises a gearbox body, a clutch shaft is arranged in the gearbox body in a penetrating manner, one end part of the clutch shaft is connected with a driving motor, a clutch is mounted on the clutch shaft, and a gear ring is arranged on the outer side of the clutch; a walking pump shaft and a working pump shaft which are arranged in a collinear mode are arranged on one side of the clutch shaft, the walking pump shaft and the working pump shaft are rotationally installed in the gearbox body, sliding sleeves are installed at the opposite inner ends of the walking pump shaft and the working pump shaft, and the sliding sleeves are connected with a shifting fork mechanism. And a pump gear which is in meshing transmission with the gear ring is mounted on a pump shaft of the walking pump. According to the electrically-driven gearbox for the engineering machinery, the running state of the working pump can be conveniently controlled by arranging the sliding sleeve, the loss of the motor is reduced, and the efficiency of the motor is improved; in the operation process of the gearbox, the driving motor only needs to rotate in one direction, and the vehicle can be controlled to advance and retreat through the single clutch.

Description

Technical Field

[0001] The utility model relates to an electric drive gearbox for engineering machinery, belonging to the technical field of gearboxes. Background Art

[0002] An electric transmission converts electrical energy into mechanical energy, achieving speed changes in a mechanical system by controlling the motor's speed and torque output. An electric transmission consists of a motor and a gear transmission system, which transmits power to the output shaft.

[0003] In existing technology, electric drive transmissions used in construction vehicles are generally equipped with a travel pump and a working pump. The travel pump generally refers to the pump that provides hydraulic power to the vehicle or equipment's travel mechanism. The travel pump generates high-pressure oil to drive the hydraulic motor or cylinder of the travel mechanism, thereby achieving vehicle or equipment movement. The working pump is the pump that provides power to the actuators (such as cylinders and motors) in the hydraulic system.

[0004] During operation, the electric transmission's travel and working pumps are constantly in operation. However, the working pump sometimes doesn't need to operate. This constant operation increases motor losses and reduces efficiency. Furthermore, the motor in the electric transmission must rotate in both directions to control the vehicle's forward and reverse movements, making control more difficult.

[0005] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content

[0006] In response to the deficiencies in the background technology, the utility model provides an electric drive gearbox for engineering machinery, which can conveniently control the operating status of the working pump by setting a sliding sleeve, reduce the loss of the motor and improve the efficiency of the motor; during the operation of the gearbox, the driving motor only needs to rotate in one direction through a single clutch to control the forward and reverse movement of the vehicle.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] An electric drive gearbox for engineering machinery includes a gearbox body, a clutch shaft passing through the gearbox body, one end of the clutch shaft being connected to a drive motor, a clutch being mounted on the clutch shaft, and a gear ring being provided on the outer side of the clutch;

[0009] One side of the clutch shaft has a collinearly arranged travel pump shaft and a working pump shaft, which are rotatably installed in the gearbox body, and a sliding sleeve is installed on the inner ends of the travel pump shaft and the working pump shaft, which is connected to the fork mechanism, and a pump gear meshing with the ring gear is installed on the travel pump shaft.

[0010] Furthermore, the outer end of the travel pump shaft is connected to the travel pump, and the outer end of the working pump shaft is connected to the working pump.

[0011] Furthermore, a hub gear A is provided at one end of the clutch, and a hub gear B is provided at the other end.

[0012] Furthermore, the other side of the clutch shaft has an idler shaft, an intermediate shaft and an output shaft which are sequentially connected in transmission.

[0013] Furthermore, one end of the output shaft is connected to the connected bridge, and the other end is provided with an output flange.

[0014] Furthermore, an intermediate shaft gear A and an intermediate shaft gear B are installed on the intermediate shaft. The intermediate shaft gear A is meshed and transmission-connected with the disk hub gear A, and the intermediate shaft gear B is transmission-connected with the disk hub gear B through an idler gear.

[0015] Furthermore, the idler wheel is mounted on the idler wheel shaft.

[0016] Furthermore, an output gear is mounted on the output shaft, and the output gear is meshed with the intermediate shaft gear B on the intermediate shaft for transmission.

[0017] Compared with the prior art, the present invention has the following advantages after adopting the above technical solution:

[0018] The gearbox, bridge and motor in this utility model are directly connected. The torque input end of the gearbox is connected to the drive motor, and the torque output end of the gearbox is connected to the bridge. By controlling the speed and torque output of the drive motor, the speed change effect of the mechanical system is achieved. The forward and reverse movement of the vehicle can be controlled by a single clutch. During the operation of the gearbox, the drive motor only needs to rotate in one direction.

[0019] The utility model controls the operating state of the working pump by means of a sliding sleeve. When the sliding sleeve slides to the left, the pump shaft of the travel pump drives the pump shaft of the working pump to rotate synchronously, and the travel pump and the working pump operate synchronously. When the sliding sleeve slides to the right, the pump shaft of the travel pump does not drive the pump shaft of the working pump to rotate, and the working pump is in a non-operating state. The working pump can be opened and closed by arranging the sliding sleeve, thereby reducing the loss of the motor.

[0020] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] In the figure, 1-transmission body, 2-clutch shaft, 3-ring gear, 4-pump gear, 5-travel pump shaft, 6-working pump shaft, 7-sliding sleeve, 8-disc hub gear A, 9-disc hub gear B, 10-intermediate shaft, 11-intermediate shaft gear A, 12-intermediate shaft gear B, 13-idler shaft, 14-idler gear, 15-output shaft, 16-output gear, 17-output flange, 18-connected bridge. DETAILED DESCRIPTION

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings.

[0024] like Figure 1 As shown, the utility model provides an electric drive gearbox for engineering machinery, including a gearbox body 1, a clutch shaft 2 is passed through the gearbox body 1, one end of the clutch shaft 2 is connected to the drive motor, and a clutch is installed on the clutch shaft 2.

[0025] A hub gear A8 is provided at one end of the clutch, a hub gear B9 is provided at the other end, and a ring gear 3 is provided on the outside of the clutch.

[0026] On one side of the clutch shaft 2, there are a traveling pump shaft 5 and a working pump shaft 6 arranged in a collinear manner. The traveling pump shaft 5 and the working pump shaft 6 are rotatably installed in the gearbox body 1. A sliding sleeve 7 is installed on the inner ends of the traveling pump shaft 5 and the working pump shaft 6. The sliding sleeve 7 is connected to the fork mechanism. A pump gear 4 that meshes with the ring gear 3 is installed on the traveling pump shaft 5.

[0027] The outer end of the travel pump shaft 5 is connected to the travel pump, and the outer end of the working pump shaft 6 is connected to the working pump.

[0028] During the operation of the utility model, the travel pump is in a normal working state, and the operation of the working pump is controlled by the sliding sleeve 7. When the sliding sleeve 7 slides to the left, the travel pump shaft 5 drives the working pump shaft 6 to rotate synchronously. When the sliding sleeve 7 slides to the right, the travel pump shaft 5 does not drive the working pump shaft 6 to rotate.

[0029] The other side of the clutch shaft 2 is provided with an idler shaft 13, an intermediate shaft 10 and an output shaft 15 which are sequentially connected in transmission. One end of the output shaft 15 is connected to a conjoined bridge 18 and the other end is provided with an output flange 17.

[0030] The intermediate shaft 10 is mounted with an intermediate shaft gear A11 and an intermediate shaft gear B12 . The intermediate shaft gear A11 is meshed and transmission-connected with the hub gear A8 . The intermediate shaft gear B12 is transmission-connected with the hub gear B9 via the idler gear 14 .

[0031] The idler wheel 14 is mounted on the idler wheel shaft 13 .

[0032] An output gear 16 is mounted on the output shaft 15 , and the output gear 16 is meshed with the intermediate shaft gear B12 on the intermediate shaft 10 for transmission.

[0033] The specific working principle of this utility model:

[0034] The gearbox, bridge and motor in this utility model are directly connected. The torque input end of the gearbox is connected to the drive motor, and the torque output end of the gearbox is connected to the bridge. By controlling the speed and torque output of the drive motor, the speed change effect of the mechanical system is achieved. The forward and reverse movement of the vehicle can be controlled by a single clutch. During operation, the drive motor only needs to rotate in one direction.

[0035] Power transmission route 1: drive motor → clutch shaft 2 → hub gear A8 → intermediate shaft gear A11 → intermediate shaft 10 → intermediate shaft gear B12 → output gear 16 → output shaft 15 → connected axle 18;

[0036] Power transmission route two: drive motor → clutch shaft 2 → hub gear B9 → idler gear 14 → intermediate shaft gear B12 → output gear 16 → output shaft 15 → connected bridge 18.

[0037] The ring gear 3 in the present invention transmits power to the pump gear 4 and the travel pump shaft 5 in sequence. The travel pump is in a normal working state during the operation of the gearbox. The utility model controls the operating state of the working pump through the sleeve 7. When the sleeve 7 slides to the left, the travel pump shaft 5 drives the working pump shaft 6 to rotate synchronously, and the travel pump and the working pump run synchronously. When the sleeve 7 slides to the right, the travel pump shaft 5 does not drive the working pump shaft 6 to rotate, and the working pump is in a non-operating state. The working pump is opened and closed by setting the sleeve 7, so as to reduce the loss of the motor.

[0038] The above description is merely an example of the preferred embodiment of the present invention. Any details not described in detail are common knowledge within the art. The scope of protection of the present invention is determined by the claims. Any equivalent modifications based on the technical teachings of the present invention are also within the scope of protection of the present invention.

Claims

1. An electric drive gearbox for construction machinery, characterized by: The invention comprises a gearbox body (1), wherein a clutch shaft (2) is provided in the gearbox body (1), one end of the clutch shaft (2) is connected to a driving motor, a clutch is mounted on the clutch shaft (2), and a gear ring (3) is provided on the outer side of the clutch; A travel pump shaft (5) and a working pump shaft (6) are collinearly arranged on one side of the clutch shaft (2). The travel pump shaft (5) and the working pump shaft (6) are rotatably mounted in the gearbox body (1). Slide sleeves (7) are mounted on the inner ends of the travel pump shaft (5) and the working pump shaft (6). The slide sleeve (7) is connected to the shift fork mechanism. A pump gear (4) meshing with the gear ring (3) is mounted on the travel pump shaft (5).

2. The electric drive gearbox for construction machinery according to claim 1, characterized in that: The outer end of the travel pump shaft (5) is connected to the travel pump, and the outer end of the working pump shaft (6) is connected to the working pump.

3. The electric drive gearbox for engineering machinery according to claim 1, characterized in that: One end of the clutch is provided with a disc hub gear A (8), and the other end is provided with a disc hub gear B (9).

4. The electric drive transmission for engineering machinery according to claim 1, characterized in that: The other side of the clutch shaft (2) has an idler shaft (13), an intermediate shaft (10), and an output shaft (15) which are sequentially connected in transmission.

5. The electric drive transmission for engineering machinery according to claim 4, characterized in that: One end of the output shaft (15) is connected to the connected bridge (18), and the other end is provided with an output flange (17).

6. The electric drive transmission for engineering machinery according to claim 4, characterized in that: An intermediate shaft gear A (11) and an intermediate shaft gear B (12) are mounted on the intermediate shaft (10). The intermediate shaft gear A (11) is meshed with the hub gear A (8) for transmission connection, and the intermediate shaft gear B (12) is transmission connected to the hub gear B (9) via an idler gear (14).

7. The electric drive transmission for engineering machinery according to claim 6, characterized in that: The idler wheel (14) is mounted on the idler wheel shaft (13).

8. The electric drive transmission for engineering machinery according to claim 4, characterized in that: An output gear (16) is mounted on the output shaft (15), and the output gear (16) is meshed with the intermediate shaft gear B (12) on the intermediate shaft (10) for transmission.

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