Stable start connecting mechanism for speed reducer of AGV (Automatic Guided Vehicle)
By improving the connection structure of the AGV trolley reducer and adopting the elastic cooperation of the input shaft, sliding sleeve and compression spring, the problems of instantaneous increase in starting torque and difficulty in starting in cold environments have been solved, achieving smooth starting and reduced current, thus improving equipment reliability.
Patent Information
- Application Number
- CN202520631400.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-04-07
AI Technical Summary
The existing AGV trolley reducer has the problem that the starting torque increases rapidly due to the direct connection between the motor input shaft and the reducer sun gear, which instantaneously exceeds the rated torque, resulting in large impact force, increased starting current, and difficulty in starting under cold conditions.
It adopts a helical gear connection structure of input shaft, sliding sleeve, right compression spring, left compression spring and sun gear, which achieves a smooth increase of torque through elastic cooperation and avoids the starting shock caused by direct connection.
It enables the motor starting torque to smoothly increase from zero to the rated torque, reduces starting impact and current, improves equipment durability, and ensures smooth starting in low-temperature environments.
Smart Images
Figure CN223839670U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of AGV (Automated Guided Vehicle) technology, specifically to a smooth start connection mechanism for an AGV reducer. Background Technology
[0002] AGV reducers are widely used on the drive wheels of AGVs. The reducer converts the high-speed, low-torque input of the motor input shaft into the low-speed, high-torque output of the drive wheels, driving the AGV to move.
[0003] The existing AGV trolley reducer uses a direct connection between the motor input shaft and the reducer sun gear. Due to the stationary inertia of the AGV trolley, this connection method causes the starting torque to increase rapidly when the motor starts, momentarily exceeding the rated torque, and only decreasing to the rated torque after starting. This results in a large impact force, and the corresponding starting current also increases rapidly, which can easily cause equipment damage. In addition, under cold conditions, the increased viscosity of lubricating oil and grease increases resistance, leading to a large starting torque and difficulty in starting. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a smooth starting connection mechanism for AGV trolley reducers. This solves the problems of existing AGV trolley reducers that use a direct connection between the motor input shaft and the reducer sun gear. Due to the stationary inertia of the AGV trolley, this connection method results in a rapid increase in starting torque during motor startup, momentarily exceeding the rated torque, and only decreasing to the rated torque after startup, leading to a large impact force. Correspondingly, the starting current also increases rapidly, easily causing equipment damage. Furthermore, under cold conditions, the increased viscosity of lubricating oil and grease increases resistance, resulting in high starting torque and difficulty in starting.
[0005] This utility model provides the following technical solution: an AGV trolley reducer smooth start connection mechanism, including a bracket, a drive wheel installed on the bracket, a reducer installed in the middle of the bracket, and a connection mechanism provided on the side of the reducer;
[0006] The connecting mechanism comprises a sun gear, a screw, a pressure cap, a left compression spring, an input shaft, a helical gear, a sliding sleeve, a straight gear, and a right compression spring. The pressure cap, the left compression spring, the sliding sleeve, and the right compression spring are sequentially fitted into the input shaft and installed onto the sun gear.
[0007] Preferred technical solution 1: Two drive wheels are symmetrically arranged, and the two drive wheels are arranged on both sides of the bracket.
[0008] Preferred technical solution 2: The screw passes through the pressure cap and is inserted into the sun gear.
[0009] Preferred technical solution 3: The left compression spring is sleeved on the outside of the input shaft.
[0010] Preferred technical solution four: The right compression spring is sleeved on the outside of the input shaft.
[0011] Compared with the prior art, this utility model provides a smooth start connection mechanism for the AGV trolley reducer, which has the following beneficial effects:
[0012] (1) This utility model improves the torque from 0 to the rated torque by directly connecting the input shaft to the sun gear structure, so that the torque increases from 0 to the rated torque momentarily and then drops back to the rated torque. It improves the torque by connecting the input shaft, the sliding sleeve, the right compression spring, the left compression spring, the spiral teeth of the sun gear, and the elastic fit structure, so that the input shaft torque can be smoothly increased from 0 to the rated torque. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the forward rotation start-up position of the structural connection mechanism of this utility model;
[0015] Figure 3 This is a schematic diagram of the forward rotation start-up position of the structural connection mechanism of this utility model;
[0016] Figure 4 This is a schematic diagram of the reverse rotation starting position of the structural connection mechanism of this utility model;
[0017] Figure 5 This is a schematic diagram showing the position of the structural connection mechanism of this utility model after reverse rotation starts.
[0018] In the diagram: 1. Drive wheel; 2. Bracket; 3. Reducer; 4. Connecting mechanism; 5. Sun gear; 6. Screw; 7. Cover; 8. Left compression spring; 9. Input shaft; 10. Helical gear; 11. Sliding sleeve; 12. Straight gear; 13. Right compression spring. Detailed Implementation
[0019] Please see Figure 1-5 ,
[0020] Example 1: A smooth start connection mechanism for an AGV trolley reducer, including a bracket 2, a drive wheel 1 mounted on the bracket 2, a reducer 3 mounted in the middle of the bracket 2, and a connection mechanism 4 provided on the side of the reducer 3;
[0021] The connecting mechanism 4 consists of a sun gear 5, a screw 6, a pressure cover 7, a left compression spring 8, an input shaft 9, a helical gear 10, a sliding sleeve 11, a straight gear 12, and a right compression spring 13. The pressure cover 7, the left compression spring 8, the sliding sleeve 11, and the right compression spring 13 are sequentially fitted into the input shaft 9 and installed onto the sun gear 5.
[0022] There are two symmetrical drive wheels 1, which are located on both sides of the bracket 2.
[0023] Example 2: The difference between this example and Example 1 is that the screw 6 is inserted through the pressure cap 7 and onto the sun gear 5.
[0024] Example 3: The difference between this example and Example 1 is that the left compression spring 8 is sleeved on the outside of the input shaft 9.
[0025] Example 4: The difference between this example and Example 1 is that the right compression spring 13 is sleeved on the outside of the input shaft 9.
[0026] In this embodiment, the existing AGV trolley reducer uses a direct connection between the motor input shaft and the reducer sun gear for transmission. Due to the stationary inertia of the AGV trolley, this connection method causes the starting torque to increase rapidly when the motor starts, momentarily exceeding the rated torque, and only decreasing to the rated torque after starting. This results in a large impact force, and the corresponding starting current also increases rapidly, which can easily cause equipment damage. Furthermore, under cold conditions, the increased viscosity of the lubricating oil and grease increases the resistance, leading to a large starting torque and difficulty in starting.
[0027] In summary, in specific implementation, as shown in the attached document... Figure 2 When the input shaft 9 starts to rotate in the forward direction, it drives the sliding sleeve 11 through the helical gear 10 to generate rotational force Y and forward force X. The rotational force Y of the sliding sleeve 11 drives the sun gear 5 to rotate in the forward direction through the spur gear 12. The forward force X begins to compress the right compression spring 13 and moves forward. Because the rotational force Y < the forward force X < the resultant force F, the right compression spring 13 is under 0 force when it starts to compress, and the torque of the input shaft 9 is 0.
[0028] As the sliding sleeve 11 moves forward, the compression of the right compression spring 13 gradually increases, and the forward component force X also gradually increases. The torque of the input shaft 9 driving the sun gear 5 increases accordingly, and the forward rotation speed of the sun gear 5 gradually increases. The reducer 3 rotates at the same time, driving the drive wheel 1 to rotate. During this process, due to the sliding action of the sliding sleeve 11, the rotation speed of the sun gear 5 is less than the rotation speed of the input shaft 9.
[0029] As attached Figure 3When the sliding sleeve 11 moves to the right end, the right compression spring 13 is fully compressed. At this time, the sliding sleeve 11 stops moving, and the input shaft 9, the sliding sleeve 11, and the sun gear 5 rotate synchronously in the forward direction. The torque of the input shaft 9 reaches the rated torque, and the AGV trolley moves forward.
[0030] As attached Figure 4 When the input shaft 9 starts to rotate in the reverse direction, the helical gear 10 drives the sliding sleeve 11 to generate rotational force Y and backward force X. The rotational force Y of the sliding sleeve 11 drives the sun gear 5 to rotate in the reverse direction through the spur gear 12. The backward force X begins to compress the left compression spring 8 and moves it backward. Because the rotational force Y < the forward force X < the resultant force F, the left compression spring 8 experiences zero force when it begins to compress, and the torque of the input shaft 9 is zero. As the sliding sleeve 11 moves backward, the compression of the left compression spring 8 gradually increases, and the backward force X also gradually increases. The torque of the input shaft 9 driving the sun gear 5 increases accordingly, and the reverse rotation speed of the sun gear 5 gradually increases. The reducer 3 rotates at the same time, driving the drive wheel 1 to rotate. During this process, due to the sliding action of the sliding sleeve 11, the rotational speed of the sun gear 5 is less than the rotational speed of the input shaft 9.
[0031] As attached Figure 5 When the sliding sleeve 11 moves to the left end, the left compression spring 8 is fully compressed. At this time, the sliding sleeve 11 stops moving, and the input shaft 9, the sliding sleeve 11, and the sun gear 5 rotate synchronously in opposite directions. The torque of the input shaft 9 reaches the rated torque, and the AGV trolley moves backward.
[0032] This device can smoothly increase the starting torque from zero to the rated torque when the motor input shaft starts, reducing starting impact force, instantaneous starting current, reducing equipment damage, and achieving the effect of low starting torque and easy starting in low temperature environments.
Claims
1. A smooth start connection mechanism for an AGV trolley reducer, comprising a bracket (2), characterized in that: A drive wheel (1) is installed on the bracket (2), a reducer (3) is installed in the middle of the bracket (2), and a connecting mechanism (4) is provided on the side of the reducer (3); The connecting mechanism (4) comprises a sun gear (5), a screw (6), a cover (7), a left compression spring (8), an input shaft (9), a helical gear (10), a sliding sleeve (11), a straight gear (12), and a right compression spring (13). The cover (7), the left compression spring (8), the sliding sleeve (11), and the right compression spring (13) are sequentially fitted into the input shaft (9) and installed onto the sun gear (5).
2. The AGV trolley reducer smooth start connection mechanism according to claim 1, characterized in that: Two drive wheels (1) are symmetrically arranged, and the two drive wheels (1) are arranged on both sides of the bracket (2).
3. The AGV trolley reducer smooth start connection mechanism according to claim 2, characterized in that: The screw (6) is inserted through the cover (7) and onto the sun gear (5).
4. The AGV trolley reducer smooth start connection mechanism according to claim 3, characterized in that: The left compression spring (8) is sleeved on the outside of the input shaft (9).
5. The AGV trolley reducer smooth start connection mechanism according to claim 4, characterized in that: The right compression spring (13) is sleeved on the outside of the input shaft (9).