Compact differential steering wheel with suspension
A compact suspension system for differential steering wheels addresses structural weaknesses by integrating shock absorption, reducing height and enhancing durability and load capacity.
Patent Information
- Application Number
- CN202421823037.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing differential steering wheel is prone to damage on bumpy roads, and the suspension structure design increases the height of the AGV, limiting the application scenario and practicality of the equipment.
A compact differential rudder with suspension was designed. By arranging four sets of shock absorbing springs around the support main mechanism, combining the rotary seat, guide column, articulated seat, guide bush and base to form a suspension mechanism, and adopting an integrated hub and planetary reducer structure, the compact design of the differential rudder is achieved, reducing the overall height and enhancing the shock absorbing function.
It effectively protects the motor and gearbox, extends the service life of the steering wheel, improves the bearing capacity, and allows the AGV to penetrate lower space, enhancing the maneuverability and adaptability of the equipment.
Smart Images
Figure CN223100397U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of AGV steering wheel drive, and specifically relates to a suspension - type compact differential steering wheel. Background Art
[0002] Differential steering wheel is a technology used to control vehicle steering, mainly applied in tracked vehicles or heavy machinery, especially in the fields of agriculture, construction, and military. AGV steering wheels usually refer to the steering wheel systems on automated guided vehicles, and these systems are designed to enhance the mobility and control performance of AGVs;
[0003] During the operation of the differential steering wheel, the bearing capacity directly acts on the steering wheel. Due to the large traction force of the steering wheel drive, once driving on a bumpy road surface, without shock - absorbing function, the internal gears in the steering wheel drive gearbox are prone to failure forms such as broken teeth under multiple impacts, thus damaging the steering wheel, limiting the improvement of the designed load - bearing capacity of the AGV. At the same time, for current AGVs equipped with shock - absorbing suspensions for differential steering wheels, the design of their suspension structures separates the suspension structure and the differential steering wheel into two independent modules. A suspension spring is directly installed on the top of the differential steering wheel, and a height - direction space needs to be reserved during the overall design, increasing the height dimension of the AGV. As a result, a large clearance needs to be reserved under the object to be transported during the operation of the in - type AGV, limiting the application scenarios and practicality of the equipment.
[0004] In summary, the utility model provides a suspension - type compact differential steering wheel to solve the above problems. Content of the Utility Model
[0005] In order to solve the above - mentioned technical problems, the utility model provides the following technical solutions:
[0006] A suspension - type compact differential steering wheel includes a support main - body mechanism, a suspension mechanism, and a transmission mechanism. The support main - body structure includes: a slewing bearing, a slewing base, a polyurethane pad, a bracket, and a base. The suspension mechanism includes a hinge seat, a shock - absorbing spring, a guide post, and a guide bushing. The transmission mechanism includes a wheel hub, a planetary reducer, a motor body, a motor mounting seat, a small bevel gear pair, and a large bevel gear pair.
[0007] Furthermore, in the utility model, the number of the wheel hub, the planetary reducer, the motor body, and the motor mounting seat is two. The motor body is located in the inner cavity of the motor mounting seat and is fixedly connected to the inner cavity of the motor mounting seat. The bracket, the two motor bodies, and the two planetary reducers are connected as a whole and form a hinge structure with the hinge seat.
[0008] Furthermore, in the utility model, the polyurethane pad is arranged between the swivel seat and the hinge seat, the four guide pillars are installed on the top of the swivel seat, and the guide shaft sleeve is arranged between the swivel seat and the guide pillar, and the side of the four guide pillars away from the swivel seat is respectively connected to the four shock-absorbing springs.
[0009] Furthermore, in the present invention, the two motor bodies are respectively mounted on the flanges of the two motor mounting seats, and the flanges of the two motor mounting seats are fixed to the bracket.
[0010] Furthermore, in the utility model, the output shafts of the two motor bodies are respectively connected to the small bevel gear pair and the large bevel gear pair, the ends of the small bevel gear pair and the large bevel gear pair away from the motor body are respectively connected to the two planetary reducers, and the two wheel hubs are respectively installed on the outer casings of the two planetary reducers.
[0011] Beneficial effects: The utility model has the following beneficial effects:
[0012] The utility model arranges four groups of shock-absorbing springs around the supporting main body mechanism, and uses a swivel seat, a guide column, an articulated seat, a guide shaft sleeve, a shock-absorbing spring and a base to form a suspension mechanism with a shock-absorbing function. The device integrates the suspension and the differential steering wheel into an integrated design, thereby reducing the overall height of the differential steering wheel with suspension, and uses two pairs of small bevel gear pairs and a large bevel gear pair to achieve the reversal of the motor body output. At the same time, the wheel hub and the planetary reducer are integrated into an integrated design to make the differential steering wheel space structure more compact. The height of the AGV frame with the compact differential steering wheel with suspension can also be reduced accordingly, so that it can sneak into the bottom of a lower shelf. The structure of the differential steering wheel with its own suspension can reduce the vibration of the steering wheel caused by uneven road surface, thereby protecting the motor body and the gear box, extending the service life of the steering wheel, and correspondingly improving the bearing capacity of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the explosion structure of the utility model;
[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;
[0015] Figure 3 It is an assembly drawing of the utility model.
[0016] In the figure:
[0017] 1. Slewing bearing; 2. Slewing seat; 3. Wheel hub; 4. Planetary reducer; 5. Polyurethane pad; 6. Articulated seat; 7. Bracket; 8. Base; 9. Motor body; 10. Motor mounting seat; 11. Shock-absorbing spring; 12. Guide column; 13. Small bevel gear pair; 14. Large bevel gear pair; 15. Guide shaft sleeve. DETAILED DESCRIPTION
[0018] In order to better understand the technical content of the utility model, specific embodiments are cited and described as follows in conjunction with the accompanying drawings. In this disclosure, various aspects of the utility model are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the accompanying drawings. The embodiments of the present disclosure are not necessarily defined to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the utility model are not limited to any implementation method. In addition, some aspects disclosed in the utility model can be used alone, or used in any appropriate combination with other aspects disclosed in the utility model.
[0019] Example 1
[0020] like Figures 1-3 As shown, the first embodiment of the utility model provides a compact differential steering wheel with suspension, including a supporting body structure, a suspension mechanism and a transmission mechanism. The supporting body structure includes: a slewing bearing 1, a slewing seat 2, a polyurethane pad 5, a bracket 7 and a base 8. The suspension mechanism includes an articulated seat 6, a shock-absorbing spring 11, a guide column 12 and a guide shaft sleeve 15. The transmission mechanism includes a wheel hub 3, a planetary reducer 4, a motor body 9, a motor mounting seat 10, a small bevel gear pair 13 and a large bevel gear pair 14.
[0021] like Figures 1-3 As shown, four groups of shock-absorbing springs 11 are arranged around the supporting main body mechanism, and a suspension mechanism with a shock-absorbing function is formed by using a swivel seat 2, a guide column 12, a hinge seat 6, a guide sleeve 15, a shock-absorbing spring 11 and a base 8. The device integrates the suspension and the differential steering wheel into an integrated design, thereby reducing the overall height of the differential steering wheel with suspension. Two pairs of small bevel gear pairs 13 and a large bevel gear pair 14 are used to achieve the reversal of the output of the motor body 9. At the same time, the hub 3 and the planetary reducer 4 are integrated into an integrated design to make the differential steering wheel space structure more compact. The height of the AGV frame with a compact differential steering wheel with suspension can also be reduced accordingly, so that it can dive into the bottom of a lower shelf. The structure of the differential steering wheel with its own suspension can reduce the vibration of the steering wheel caused by uneven road surface, thereby protecting the motor body 9 and the gear box, extending the service life of the steering wheel, and correspondingly improving the bearing capacity of the equipment.
[0022] Example 2
[0023] Reference Figure 1 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.
[0024] In this embodiment, the numbers of the wheel hub 3, the planetary reducer 4, the motor body 9, the motor mounting base 10, the small bevel gear pair 13 and the large bevel gear pair 14 are all two. The motor body 9 is located in the inner cavity of the motor mounting base 10 and is fixedly connected to the inner cavity of the motor mounting base 10. The bracket 7, the two motor bodies 9 and the two planetary reducers 4 are connected as a whole to form a hinge structure with the hinge seat 6.
[0025] The polyurethane pad 5 is arranged between the slewing seat 2 and the hinge seat 6. The four guide posts 12 are all installed on the top of the slewing seat 2, and the guide bush 15 is arranged between the slewing seat 2 and the guide posts 12. The four guide posts 12 are respectively connected to the four shock-absorbing springs 11 on the side away from the slewing seat 2.
[0026] As Figure 1 shown, the polyurethane pad 5 is between the slewing seat 2 and the hinge seat 6 to play a buffering role. The four guide posts 12 are installed on the slewing seat 2, and four guide bushes 15 are installed between the slewing seat 2 and the four guide posts 12 to facilitate the up and down movement of the guide posts 13. The four guide posts 12 are connected to the four shock-absorbing springs 11. When impacted, the guide posts 12 move downward, and the shock-absorbing springs 11 are compressed by the force, enabling the differential steering wheel to run smoothly.
[0027] Embodiment 3
[0028] Referring to Figure 1 , this is the third embodiment of the present utility model, and this embodiment is based on the first two embodiments.
[0029] In this embodiment, the two motor bodies 9 are respectively installed on the flanges of the two motor mounting bases 10, and the flanges of the two motor mounting bases 10 are fixed to the bracket 7.
[0030] The output shafts of the two motor bodies 9 are respectively in transmission connection with the small bevel gear pair 13 and the large bevel gear pair 14. The ends of the small bevel gear pair 13 and the large bevel gear pair 14 away from the motor body 9 are respectively connected to the two star reducers 4, and the two wheel hubs 3 are respectively installed on the outer shells of the two planetary reducers 4.
[0031] As Figure 1 shown, when the road surface is uneven, the mounting flanges of the two motor mounting bases 10 and the hinge seat 6 can have a certain amount of relative swing, so that the left and right wheel hubs 3 can touch the ground simultaneously when impacted, further improving the adaptability of the steering wheel to the uneven road surface. The output shafts of the two motor bodies 9 are respectively in transmission connection with the small bevel gear pair 13 and the large bevel gear pair 14, thereby changing the output direction. The output commutation of the motor body 9 does not rely on the traditional parallel shaft gearbox or sprocket, and the bevel gear pair is used to achieve commutation, which can make the structure of the differential steering wheel more compact and greatly reduce the turning radius of the differential steering wheel.
[0032] When in use, the polyurethane pad 5 is between the swivel seat 2 and the articulated seat 6 to play a buffering role. The four guide pillars 12 are installed on the swivel seat 2. Four guide shaft sleeves 15 are installed between the swivel seat 2 and the four guide pillars 12 to facilitate the up and down movement of the guide pillars 13. The four guide pillars 12 are connected to four shock-absorbing and damping springs 11. When subjected to impact force, the guide pillars 12 move downward, and the shock-absorbing springs 11 are compressed by force, so that the differential steering wheel runs smoothly. When the road surface is uneven, the mounting flanges of the two motor mounting seats 10 and the articulated seat 6 can have a certain amount of mutual swing, so that the left and right wheel hubs 3 can touch the ground at the same time when impacted, further improving the adaptability of the steering wheel to uneven roads. The output shafts of the two motor bodies 9 are respectively connected to the small bevel gear pair 13 and the large bevel gear pair 14 for transmission, thereby changing the output direction. The output reversing of the motor body 9 does not rely on the traditional parallel shaft gear box or sprocket. The reversing is achieved by the bevel gear pair, which can make the differential steering wheel structure more compact and greatly reduce the turning radius of the differential steering wheel.
[0033] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in the field. This application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.
[0034] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.
Claims
1. A suspension compact differential steering wheel, comprising a support main body mechanism, a suspension mechanism and a transmission mechanism, characterized in that: The support main structure includes: a slewing bearing (1), a slewing base (2), a polyurethane pad (5), a bracket (7) and a base (8). The suspension mechanism includes a hinge seat (6), a shock-absorbing spring (11), a guide pillar (12) and a guide bushing (15). The transmission mechanism includes a hub (3), a planetary reducer (4), a motor body (9), a motor mounting seat (10), a small bevel gear pair (13) and a large bevel gear pair (14).
2. The suspension compact differential steering wheel according to claim 1, wherein: The number of the hubs (3), planetary reducers (4), motor bodies (9) and motor mounting seats (10) is two. The motor body (9) is located in the inner cavity of the motor mounting seat (10) and is fixedly connected to the inner cavity of the motor mounting seat (10). The bracket (7), two motor bodies (9) and two planetary reducers (4) are connected as a whole and form a hinge structure with the hinge seat (6).
3. The suspension-equipped compact differential steering wheel according to claim 1, wherein: The polyurethane pad (5) is arranged between the slewing base (2) and the hinge seat (6). The four guide pillars (12) are all installed on the top of the slewing base (2), and the guide bushing (15) is arranged between the slewing base (2) and the guide pillar (12). One side of the four guide pillars (12) away from the slewing base (2) is respectively connected to the four shock-absorbing springs (11).
4. The suspension-equipped compact differential steering wheel according to claim 1, wherein: The two motor bodies (9) are respectively installed on the flanges of the two motor mounting seats (10), and the flanges of the two motor mounting seats (10) are fixed to the bracket (7).
5. The suspension-equipped compact differential steering wheel according to claim 1, wherein: The output shafts of the two motor bodies (9) are respectively in transmission connection with the small bevel gear pair (13) and the large bevel gear pair (14). One end of the small bevel gear pair (13) and the large bevel gear pair (14) away from the motor body (9) is respectively connected to the two planetary reducers (4), and the two hubs (3) are respectively installed on the outer shells of the two planetary reducers (4).