An integrated design forklift hydraulic power structure

Abstract

This utility model discloses an integrated hydraulic power structure for forklifts, including a motor mount, a valve block body, and a gear pump body. The motor mount is fixedly mounted on the upper surface of the valve block body, and the gear pump body is mounted on the lower surface of the valve block body. A motor shaft is rotatably mounted inside the motor mount, and a motor rear cover assembly is mounted on the top of the motor mount. A gear body is rotatably mounted inside the gear pump body, and a gear pump rear cover is mounted on the bottom of the gear pump body. This integrated hydraulic power structure for forklifts integrates a DC motor, a valve block, and a hydraulic pump, eliminating the need for separate front covers for the motor and hydraulic pump. The valve block serves not only as its own oil passage but also as the front cover for both the motor and the hydraulic pump. One component performs three functions. This design reduces material and manufacturing costs, minimizes the cumulative error of individual components, and results in a more compact structure, saving installation space.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic power structures, and in particular to an integrated hydraulic power structure for forklifts. Background Technology

[0002] Currently, most hydraulic power assemblies in electric forklifts on the market employ a solution where the DC motor, valve block, and hydraulic pump are three separate components, designed independently and then connected together by bolts. Motion and torque are transmitted via key connections or other mechanical structures. While this structure meets functional requirements, it is relatively expensive in terms of materials and manufacturing. Furthermore, the more parts there are, the greater the cumulative error of each component, resulting in increased system vibration and noise after installation. Therefore, developing an integrated hydraulic power structure for forklifts has become a pressing issue for those skilled in the art. Utility Model Content

[0003] The purpose of this invention is to provide an integrated hydraulic power structure for forklifts, which solves the problems of high manufacturing costs and high vibration and noise caused by the separate design of DC motors, valve blocks and hydraulic pumps in existing hydraulic power assemblies.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model discloses an integrated hydraulic power structure for forklifts, comprising a motor base, a valve block body, and a gear pump body. The motor base is fixedly mounted on the upper surface of the valve block body, and the gear pump body is mounted on the lower surface of the valve block body. A motor shaft is rotatably mounted inside the motor base, and a motor rear cover assembly is mounted at the top of the motor base. A gear body is rotatably mounted inside the gear pump body, and a gear pump rear cover is mounted at the bottom of the gear pump body.

[0005] Furthermore, the motor rear cover assembly is provided with a rear bearing that mates with the upper end of the motor shaft.

[0006] Furthermore, the valve block body is provided with a front bearing that mates with the lower end of the motor shaft.

[0007] Furthermore, a rotor is provided on the circumferential surface of the motor shaft, and a stator that cooperates with the rotor is provided on the inner wall of the motor base.

[0008] Furthermore, the motor mount is fixedly mounted on the valve block body by a second bolt.

[0009] Furthermore, the gear pump rear cover and gear pump body are fixedly mounted on the valve block body by the first bolt.

[0010] Furthermore, a gear shaft is rotatably mounted inside the gear pump body via a gear bushing, the gear body is driven by the gear shaft, and the top end of the gear shaft is connected to the bottom end of the motor shaft via a keyway.

[0011] Furthermore, a sealing ring is provided between the valve block body and the gear pump body.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This utility model integrates a forklift hydraulic power structure with a DC motor, valve block, and hydraulic pump. It eliminates the front cover of the motor and hydraulic pump, and the valve block serves not only as its own oil passage but also as the front cover of the motor and the hydraulic pump. One part has three functions. This design reduces material and manufacturing costs, minimizes the cumulative error of each part, and makes the structure more compact, saving installation space. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings: Figure 1 Axonometric drawing of the integrated design of the forklift hydraulic power structure of this utility model; Figure 2 This is a front view of the integrated hydraulic power structure of the forklift designed according to this utility model; Figure 3 Right view of the integrated hydraulic power structure of the forklift designed according to this utility model; Figure 4 Top view of the integrated hydraulic power structure of the forklift designed according to this utility model; Figure 5 for Figure 2 AA section view.

[0014] Explanation of reference numerals in the attached drawings: 1. Rear cover assembly; 2. Rear bearing; 3. Motor mount; 4. Motor shaft; 5. Rotor; 6. Stator; 7. Front bearing; 8. Valve block body; 9. Gear pump body; 10. Gear body; 11. Gear pump rear cover; 12. First bolt; 13. Gear bushing; 14. Gear shaft; 15. Sealing ring; 16. Second bolt. Detailed Implementation

[0015] like Figures 1 to 5 As shown, an integrated design for a forklift hydraulic power structure includes a motor mount 3, a valve block body 8, and a gear pump body 9.

[0016] The motor base 3 is fixedly mounted on the upper surface of the valve block body 8, and the gear pump body 9 is mounted on the lower surface of the valve block body 8.

[0017] A motor shaft 4 is rotatably disposed inside the motor base 3, a rotor 5 is disposed on the circumferential surface of the motor shaft 4, and a stator 6 that cooperates with the rotor 5 is disposed on the inner wall of the motor base 3.

[0018] The top of the motor base 3 is provided with a motor rear cover assembly 1, the gear body 10 is rotatably provided inside the gear pump body 9, and the bottom of the gear pump body 9 is provided with a gear pump rear cover 11.

[0019] The motor rear cover assembly 1 is provided with a rear bearing 2 that mates with the upper end of the motor shaft 4. The valve block body 8 is provided with a front bearing 7 that mates with the lower end of the motor shaft 4.

[0020] During installation, the valve block body 8 is provided with a stop and a bearing seat hole. The front bearing 7 is installed into the valve block body 8, the motor seat 3 is installed in place with the valve block stop, the motor shaft 4 is installed in place with the front bearing 7, and the motor seat 3 and the valve block body 8 are connected with the second bolt 16.

[0021] The gear pump rear cover 11 and the gear pump body 9 are fixedly mounted on the valve block body 8 by the first bolt 12. A sealing ring 15 is provided between the valve block body 8 and the gear pump body 9. A gear shaft 14 is rotatably mounted inside the gear pump body 9 via a gear bushing 13. The gear body 10 is driven by the gear shaft 14, and the top end of the gear shaft 14 is connected to the bottom end of the motor shaft 4 via a keyway.

[0022] During installation, the valve block body 8 is provided with a positioning pin hole and a sealing groove. The gear pump body 9, gear body 10, gear pump rear cover 11, gear bushing 13, gear shaft 14, and sealing ring 15 are positioned through the positioning pin hole and connected with the first bolt 12.

[0023] The motor shaft 4 and the gear shaft 14 are connected by a machined keyway to transmit motion and torque, thus realizing the structure of the motor, valve block and hydraulic pump as one unit.

[0024] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An integrated design forklift hydraulic power structure, characterized by: The device includes a motor base (3), a valve block body (8), and a gear pump body (9). The motor base (3) is fixedly disposed on the upper surface of the valve block body (8), and the gear pump body (9) is disposed on the lower surface of the valve block body (8). A motor shaft (4) is rotatably disposed inside the motor base (3). A motor rear cover assembly (1) is disposed at the top of the motor base (3). A gear body (10) is rotatably disposed inside the gear pump body (9), and a gear pump rear cover (11) is disposed at the bottom of the gear pump body (9).

2. The integrated design of the forklift hydraulic power structure according to claim 1, characterized in that: The motor rear cover assembly (1) is provided with a rear bearing (2) that mates with the upper end of the motor shaft (4).

3. The integrated design of the forklift hydraulic power structure according to claim 1, characterized in that: The valve block body (8) is provided with a front bearing (7) that cooperates with the lower end of the motor shaft (4).

4. The integrated design of the forklift hydraulic power structure according to claim 1, characterized in that: The motor shaft (4) has a rotor (5) on its circumference, and the motor base (3) has a stator (6) that cooperates with the rotor (5) on its inner wall.

5. The integrated design of the forklift hydraulic power structure according to claim 1, characterized in that: The motor mount (3) is fixedly mounted on the valve block body (8) by the second bolt (16).

6. The integrated design of the forklift hydraulic power structure according to claim 1, characterized in that: The gear pump rear cover (11) and gear pump body (9) are fixedly mounted on the valve block body (8) by the first bolt (12).

7. The integrated design of the forklift hydraulic power structure according to claim 6, characterized in that: The gear pump body (9) is rotatably provided with a gear shaft (14) through a gear bushing (13). The gear body (10) is driven by the gear shaft (14). The top end of the gear shaft (14) is connected to the bottom end of the motor shaft (4) through a keyway.

8. The integrated design of the forklift hydraulic power structure according to claim 7, characterized in that: A sealing ring (15) is provided between the valve block body (8) and the gear pump body (9).

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