Grease injection head mechanism capable of rotating in circumferential direction

Abstract

The utility model relates to the technical field of steering systems, in particular to a grease injection head mechanism capable of rotating in the circumferential direction. A grease injection head mechanism capable of rotating in the circumferential direction is characterized in that the bottom of a servo motor is connected with one end of a speed reducer, the other end of the speed reducer is in shaft connection with a left synchronous belt wheel, and the left synchronous belt wheel is in transmission connection with a right synchronous belt wheel through a synchronous belt; the axial center line of the rotating shaft is of a hollow structure, the top of the rotating shaft is connected with a grease injection connector, the bottom of the rotating shaft is connected with one end of a rotating disc, the other end of the rotating disc is connected with the top of a protective sleeve, and the bottom of the protective sleeve is connected with a grease injection needle through a connector. Compared with the prior art, the grease injection head mechanism capable of rotating in the circumferential direction is provided, a mechanical transmission connection mode is adopted, a high-performance motor is matched, the load bearing capacity of a transmission mechanism is improved, and the grease injection precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of steering system technology, specifically a grease injection head mechanism that can rotate in a circumferential direction.

[0002] A grease injection head mechanism capable of circumferential rotation includes a servo motor, a reducer, a synchronous pulley, a synchronous belt, a rotating shaft, a protective sleeve, and a grease injection needle. The servo motor's bottom is connected to one end of the reducer, and the other end of the reducer is shaft-connected to a left synchronous pulley. The left synchronous pulley and a right step pulley are connected via a synchronous belt drive. The right step pulley is shaft-connected to the rotating shaft, which has a hollow axial centerline. The top of the rotating shaft is connected to a grease injection connector, and the bottom of the rotating shaft is connected to one end of a rotating disk. The other end of the rotating disk is connected to the top of the protective sleeve, and the bottom of the protective sleeve is connected to the grease injection needle via a connector.

[0003] Compared with existing technologies, a grease injection head mechanism that can rotate in a circumferential direction is provided, which has a mechanical transmission connection and is adapted to a high-performance motor, increasing the load capacity of the transmission mechanism and improving the grease injection accuracy. Background Technology

[0004] In the assembly of automotive steering systems, there are many grease injection processes. Currently, production lines widely use the automatic grease injection system of D+P products. The hardware of the D+P grease injection system includes multiple components such as the grease injection mechanism, grease injection head, and controller. The circumferential rotary grease injection head of D+P products has two main problems: 1. There is no feedback when the motor is damaged or not working, which can lead to quality accidents; 2. During rotation, due to the large load torque, the motor is prone to overheating and damage. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this utility model provides a grease injection head mechanism that can rotate in a circumferential direction. By improving the mechanical structure and electrical components, it enhances the load-bearing capacity and stability.

[0006] To achieve the above objectives, the speed reducer is designed to be connected to one side of the base plate via a connecting plate.

[0007] A bearing housing is fitted onto the rotating shaft located below the right step pulley, and one side of the bearing housing is connected to the other side of the base plate through a bearing housing connecting plate.

[0008] The upper part of the rotating shaft is connected to a grease injection joint, a right step pulley, and a bearing seat, while the lower part of the rotating shaft passes through the base plate and connects to the rotating disk; a spacer is provided between the rotating shaft and the base plate.

[0009] An O-ring is provided between the rotating disk and the protective sleeve.

[0010] The outer sides of the servo motor, reducer, and left synchronous pulley are respectively connected to the base plate by a front left baffle, a rear left baffle, and a cover plate.

[0011] The outer sides of the grease injection connector, right step pulley, and rotating shaft are respectively connected to the bottom plate by a front right baffle, a rear right baffle, a top plate, and a vertical plate.

[0012] One side of the top plate is connected to the bottom plate by a partition, and the other side of the top plate is connected to the bottom plate by a vertical plate.

[0013] One side of the cover plate is connected to the left end of the bottom plate, and the other side of the cover plate is connected to the top of one side of the top plate.

[0014] This utility model is designed with the radius of the steering gear input shaft as the radius of rotation, and grease is evenly injected into the sensor cap. The hardware price is much lower than that of D+P products, which can reduce costs and increase efficiency. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the structure of this utility model.

[0016] Figure 2 This is an exploded view of the structure of this utility model. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] like Figure 1 , Figure 2 As shown, the bottom of the servo motor 2 is connected to one end of the reducer 3, and the other end of the reducer 3 is connected to the left synchronous pulley 4. The left synchronous pulley 4 and the right step pulley 14 are connected by a synchronous belt 7. The right step pulley 14 is connected to the rotating shaft 11. The axial center line of the rotating shaft 11 is a hollow structure. The top of the rotating shaft 11 is connected to the grease injection connector 16, and the bottom of the rotating shaft 11 is connected to one end of the rotating disk 8. The other end of the rotating disk 8 is connected to the top of the protective sleeve 10, and the bottom of the protective sleeve 10 is connected to the grease injection needle 20 through the connector 19.

[0019] The reducer 3 is connected to one side of the base plate 6 via the connecting plate 5.

[0020] A bearing seat 13 is fitted on the rotating shaft 11 located below the right step pulley 14. One side of the bearing seat 13 is connected to the other side of the base plate 6 through the bearing seat connecting plate 21.

[0021] The upper part of the rotating shaft 11 is connected to the grease injection joint 16, the right step pulley 14, and the bearing seat 13, respectively. The lower part of the rotating shaft 11 passes through the base plate 6 and is connected to the rotating disk 8. A spacer 12 is provided between the rotating shaft 11 and the base plate 6.

[0022] An O-ring 9 is provided between the rotating disk 8 and the protective sleeve 10.

[0023] The outer sides of the servo motor 2, reducer 3, and left synchronous pulley 4 are respectively connected to the base plate 6 by the front left baffle 22, the rear left baffle 24, the cover plate 1, and the base plate 6.

[0024] The outer sides of the grease injection connector 16, the right step pulley 14, and the rotating shaft 11 are respectively connected to the bottom plate 6 by the front right baffle 25, the rear right baffle 26, the top plate 27, and the vertical plate 28.

[0025] One side of the top plate 27 is connected to the bottom plate 6 by a partition 23, and the other side of the top plate 27 is connected to the bottom plate 6 by a vertical plate 28.

[0026] One side of the cover plate 1 is connected to the left end of the bottom plate 6, and the other side of the cover plate 1 is connected to the top of one side of the top plate 27.

[0027] The working principle of this utility model is as follows:

[0028] First, set the rotation speed and rotation angle of servo motor 2;

[0029] Servo motor 2 starts to rotate, and drives left synchronous pulley 4 through reducer 3. Left synchronous pulley 4 drives right step pulley 14 to rotate through the mechanical transmission of synchronous belt 7, causing rotating shaft 11 to rotate, and driving rotating disk 8, thereby causing protective sleeve 10 and grease injection needle 20 to rotate.

[0030] The grease injection needle 20 rotates with a radius of 13mm. While rotating, grease is connected to the grease injection connector 16 through the external oil tube until it reaches the grease injection needle 20.

[0031] While rotating, grease is dispensed from the 20 injection needles until the servo motor 2 reaches the set rotation angle, at which point the grease injection stops.

[0032] The protective sleeve 10 is inserted into the sensor input shaft to serve as a guide, and the surface of the sensor cap is evenly coated with a ring of grease.

[0033] This invention employs a circumferentially rotating grease injection head, which improves hardware performance and mechanical structure, ensuring stability and reliability. It is also suitable for grease injection applications on sensor caps during steering gear assembly. The use of a reducer, synchronous belt, and synchronous pulley transmission method allows for greater load capacity. Servo control enables precise control of rotation speed and angle. All hardware used is high-performance and cost-effective, contributing to cost reduction and efficiency improvement.

[0034] This invention has been applied to the grease injection station of the sensor cap on the ST300 of the Final5 production line. It has been installed and tested for 8 months. Currently, the grease injection process is stable, controllable, and without any faults.

Claims

1. A grease injection head mechanism capable of circumferential rotation, comprising a servo motor, a reducer, a timing pulley, a timing belt, a rotating shaft, a protective sleeve, and a grease injection needle, characterized in that: The bottom of the servo motor (2) is connected to one end of the reducer (3), and the other end of the reducer (3) is connected to the left synchronous pulley (4). The left synchronous pulley (4) and the right step pulley (14) are connected by a synchronous belt (7). The right step pulley (14) is connected to the rotating shaft (11). The axial center line of the rotating shaft (11) is a hollow structure. The top of the rotating shaft (11) is connected to the grease injection connector (16). The bottom of the rotating shaft (11) is connected to one end of the rotating disk (8). The other end of the rotating disk (8) is connected to the top of the protective sleeve (10). The bottom of the protective sleeve (10) is connected to the grease injection needle (20) through the connector (19).

2. The grease injection head mechanism that can rotate in a circumferential direction according to claim 1, characterized in that: The speed reducer (3) is connected to one side of the base plate (6) via a connecting plate (5).

3. The grease injection head mechanism that can rotate in a circumferential direction according to claim 1, characterized in that: A bearing housing (13) is fitted on the rotating shaft (11) located below the right step pulley (14). One side of the bearing housing (13) is connected to the other side of the base plate (6) through the bearing housing connecting plate (21).

4. A grease injection head mechanism capable of circumferential rotation according to claim 1 or 3, characterized in that: The upper part of the rotating shaft (11) is connected to the grease injection joint (16), the right step pulley (14), and the bearing seat (13), respectively. The lower part of the rotating shaft (11) passes through the base plate (6) and is connected to the rotating disk (8). A spacer (12) is provided between the rotating shaft (11) and the base plate (6).

5. The grease injection head mechanism that can rotate in a circumferential direction according to claim 1, characterized in that: An O-ring (9) is provided between the rotating disk (8) and the protective sleeve (10).

6. The grease injection head mechanism that can rotate in a circumferential direction according to claim 1, characterized in that: The outer sides of the servo motor (2), reducer (3), and left synchronous pulley (4) are respectively connected to the base plate (6) by the front left baffle (22), the rear left baffle (24), the cover plate (1).

7. The grease injection head mechanism that can rotate in a circumferential direction according to claim 1, characterized in that: The outer sides of the grease injection connector (16), right step pulley (14), and rotating shaft (11) are respectively connected to the bottom plate (6) by the front right baffle (25), the rear right baffle (26), the top plate (27), and the vertical plate (28).

8. The grease injection head mechanism that can rotate in a circumferential direction according to claim 7, characterized in that: One side of the top plate (27) is connected to the bottom plate (6) by a partition (23), and the other side of the top plate (27) is connected to the bottom plate (6) by a vertical plate (28).

9. A grease injection head mechanism capable of circumferential rotation according to claim 6, characterized in that: One side of the cover plate (1) is connected to the left end of the bottom plate (6), and the other side of the cover plate (1) is connected to the top of one side of the top plate (27).

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