Heavy-load horizontal steering wheel

Abstract

The heavy-load horizontal steering wheel comprises a transmission shaft, a first box body, a middle box body and a second planet carrier which are integrated, the middle box body, the first box body and the second planet carrier are connected and fixed, and the transmission shaft is rotationally arranged in the second planet carrier and the first box body; a second box body is rotatably arranged on the outer surface of the second planet carrier, wheels are detachably arranged on the outer surface of the second box body, the transmission shaft is in power connection with the second box body and the wheels through a two-stage planet gear speed reduction assembly, and the transmission shaft is of an integrated structure, so that the strength is higher; according to the double-stage speed reducer assembly, the transmission shaft is arranged on the outer side of the double-stage speed reducer assembly, the front side box body, the first box body, the middle box body, the second box body and the second planet carrier are arranged on the outer side of the double-stage speed reducer assembly, a multi-layer connection structure is formed, and power of the transmission shaft can be accurately and stably transmitted into the double-stage speed reducer assembly to drive the wheels to rotate.

Description

Technical Field

[0001] The present invention relates to the technical field of horizontal steering wheels, and specifically to a heavy-duty horizontal steering wheel. Background Art

[0002] For heavy-duty horizontal steering wheels, due to their compact volume and the need to output a large torque, such products are generally of a compact design. The disadvantage of existing heavy-duty horizontal steering wheels is that their reducer drive shafts are split-type. And since the reducer generally has multiple-stage transmissions, the split-type drive shafts are used to connect multiple reducers respectively. When transmitting a large torque, the stiffness of the split-type drive shafts is small and they are easily broken. This also causes the defect that existing heavy-duty horizontal steering wheels are easily damaged. A lot of research has been carried out on this. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a heavy-duty horizontal steering wheel that can solve the problems in the above-mentioned current technology.

[0004] The present invention is realized through the following technical solutions: A reducer wheel set of the present invention includes an integral drive shaft, a first box body, an intermediate box body, and a second planetary carrier. The intermediate box body, the first box body, and the second planetary carrier are fixedly connected. The drive shaft is rotatably arranged in the second planetary carrier and the first box body. The outer surface of the second planetary carrier is rotatably provided with a second box body. The outer surface of the second box body is detachably provided with a wheel. The drive shaft is power-connected to the second box body and the wheel through a two-stage planetary gear reduction assembly.

[0005] Further technical solution, the drive shaft passes through the intermediate box body, the first box body, and the second planetary carrier. The drive shaft is rotationally and cooperatively connected to the second planetary carrier and the first box body through a first bearing. The first bearing is arranged at the rear side of the second planetary carrier and the rear side of the first box body.

[0006] Further technical solution, the drive motor is installed at the rear side of the second planetary carrier.

[0007] Further technical solution, the two-stage planetary gear reduction assembly includes two second bearings arranged on the inner ring of the second box body. The second bearings rotationally and cooperatively connect the second box body and the second planetary carrier. One third bearing is arranged at the front and rear of the inner ring of the second planetary carrier. The third bearings rotationally and cooperatively connect the second planetary carrier and the drive shaft. A first reduction structure is arranged in the first box body and the intermediate box body. A second reduction structure is arranged at the rear side of the first reduction structure. A second sun gear is connected between the first reduction structure and the second reduction structure. The drive shaft is power-connected to the first reduction structure.

[0008] Further technical solution: The second bearings are arranged on the front and rear sides of the inner ring of the second box body.

[0009] Further technical solution: The first reduction structure includes a first planet carrier, which is rotatably arranged at the rear side of the first box body and the front side of the inner ring of the second planet carrier. Three first planet gears are rotatably arranged inside the first planet carrier. A first ring gear meshing with the first planet gears is arranged inside the intermediate box body. A first sun gear is arranged on the outer surface of the transmission shaft, and the first sun gear is meshed with the first planet gears. The transmission shaft movably passes through the second sun gear.

[0010] Further technical solution: The second reduction structure includes three second planet gears rotatably arranged inside the second planet carrier. The second sun gear is meshed with the second planet gears. The second sun gear is fixedly connected with the first planet carrier in a cooperative manner. Three inner cavities are arranged inside the second planet carrier. The second sun gear passes through the inner cavities and then meshes with a second ring gear on the inner side of the second box body.

[0011] A heavy-duty horizontal steering wheel further includes a first box body. A connecting plate is arranged on the top of the first box body. A meshing gear is rotatably arranged on the top of the first box body, and the meshing gear is rotatably arranged above the connecting plate. A motor is arranged on the lower side of the connecting plate. A transmission gear is power-connected to the top side of the motor, and the transmission gear is meshed with the meshing gear. A reducer wheel set is arranged on one side of the first box body. A brake disc is arranged on the front side of the reducer wheel set, and a transmission motor is arranged on the rear side of the reducer wheel set. The brake disc and the transmission motor are power-connected to the reducer wheel set.

[0012] The transmission shaft is power-connected to the transmission motor and the brake disc.

[0013] Further technical solution: A front side box body is further arranged on the front side of the first box body, and the brake disc is installed on the front side of the front side box body.

[0014] The beneficial effects of the present invention are as follows: First, the transmission shaft adopts an integral structure, with higher strength, and structures such as a front side box body, a first box body, an intermediate box body, a second box body, and a second planet carrier are respectively arranged on its outer side, forming a multi-layer connection structure, which can accurately and stably transmit the power of the transmission shaft to the two-stage reducer assembly to drive the wheel to rotate.

[0015] Second, two first bearings are arranged on the outer surface of the transmission shaft. The transmission shaft is rotatably arranged in the second planet carrier and the first box body through the first bearings, and the transmission is more stable.

[0016] III. When disassembling and replacing the wheel, the drive motor is disassembled, and then the wheel and the second box body can be disassembled and separated, making it more convenient for personnel to maintain the wheel.

[0017] IV. An integral structure is formed by the front box body, the first box body, the intermediate box body, and the second planet carrier. With the intermediate box body in the first reducer structure remaining stationary, the first planet carrier and the first planet gears rotate around the inner circle of the intermediate box body, causing the first planet carrier and the second sun gear to rotate. The transmission shaft is driven by the first sun gear to drive the first planet gears for transmission, and the transmission shaft can also pass through the second sun gear movably, enabling the power of the drive motor to be transmitted to the front side unobstructed.

[0018] V. The second sun gear directly drives the second planet gear for transmission. After passing through the inner cavity, the second planet gear meshes with the second tooth ring on the inner side of the second box body, causing the second box body and the wheel to rotate. By arranging the first reduction structure and the second reduction structure on the outer surface of the transmission shaft, the transmission shaft is tightly wrapped, improving the overall stiffness and transmission stability of the structure, enabling the second box body and the wheel to output a large torque and achieve a large heavy-load function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For ease of explanation, the present invention is described in detail by the following specific embodiments and accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of a heavy-load horizontal steering wheel of the present invention;

[0021] Figure 2 is Figure 1 a schematic diagram of the structure in the A-A direction;

[0022] Figure 3 is Figure 2 a schematic diagram of the structure of the reducer wheel set;

[0023] Figure 4 is Figure 2 a schematic diagram of the structure in the B-B direction;

[0024] Figure 5 is Figure 2 a schematic diagram of the structure in the C-C direction;

[0025] In the figure, the motor 11, the transmission gear 12, the meshing gear 13, the transmission motor 21, the second sun gear 23, the second planetary gear 24, the second planetary carrier 25, the second housing 26, the wheel 27, the first planetary gear 29, the first planetary carrier 31, the brake disc 32, the front housing 34, the first housing 35, the middle housing 36, the first sun gear 37, the inner cavity 38, the transmission shaft 39, and the second ring gear 41. DETAILED DESCRIPTION

[0026] like Figures 1-5 As shown, the present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are Figure 1 The up-down, left-right, front-back directions of the projection relationship are consistent. A heavy-loaded horizontal steering wheel of the present invention comprises a first box body 35, a connecting plate is arranged on the top of the first box body 35, a meshing gear 13 is rotatably arranged on the top of the first box body 35, the meshing gear 13 is rotatably arranged on the upper side of the connecting plate, a motor 11 is arranged on the lower side of the connecting plate, a transmission gear 12 is arranged for power connection with the top side of the motor 11, the transmission gear 12 is meshed with the meshing gear 13, a reducer wheel set is arranged on one side of the first box body 35, a brake disc 32 is arranged on the front side of the reducer wheel set, a transmission motor 21 is arranged on the rear side of the reducer wheel set, and the brake disc 32 and the transmission motor 21 are connected to the power of the reducer wheel set.

[0027] Advantageously, the reducer wheel assembly includes an integrated transmission shaft 39, which is dynamically connected to the transmission motor 21 and the brake disc 32, and also includes a first housing 35, an intermediate housing 36 and a second planetary carrier 25. The intermediate housing 36, the first housing 35 and the second planetary carrier 25 are fixed by bolts in a detachable manner. The transmission shaft 39 is rotatably arranged in the second planetary carrier 25 and the first housing 35 through a first bearing. The outer surface of the second planetary carrier 25 is rotatably provided with a second housing 26, and the outer surface of the second housing 26 is detachably provided with a wheel 27. The transmission shaft 39 is dynamically connected to the second housing 26 and the wheel 27 through a two-stage planetary gear reduction assembly. By forming the transmission shaft 39 into an integrated structure, the structural stability is higher, and two first bearings are arranged on its outer surface, so that its transmission stability is stronger.

[0028] Advantageously, the transmission shaft 39 passes through the intermediate housing 36 , the first housing 35 and the second planetary carrier 25 , and the first bearing is disposed at the rear side of the second planetary carrier 25 and the rear side of the first housing 35 .

[0029] Advantageously, a front side box 34 is further provided on the front side of the first box 35 , and the brake disc 32 is mounted on the front side of the front side box 34 .

[0030] Advantageously, the drive motor 21 is installed at the rear side of the second planet carrier 25. After the drive motor 21 is detached from the rear side of the second planet carrier 25, the wheel 27 can be detached from the outer surface of the second housing 26, which is very convenient and fast.

[0031] Advantageously, the two-stage planetary gear reduction assembly includes two second bearings disposed on the inner ring of the second housing 26. The second bearings rotatably connect the second housing 26 and the second planet carrier 25. There is one third bearing each at the front and rear of the inner ring of the second planet carrier 25. The third bearings rotatably connect the second planet carrier 25 and the transmission shaft 39. A first reduction structure is disposed in the first housing 35 and the intermediate housing 36. A second reduction structure is disposed at the rear side of the first reduction structure. A second sun gear 23 is connected between the first reduction structure and the second reduction structure. The transmission shaft 39 is power-connected to the first reduction structure.

[0032] Advantageously, second bearings are disposed on the front and rear sides of the inner ring of the second housing 26.

[0033] Advantageously, the first reduction structure includes a first planet carrier 31. The first planet carrier 31 is rotatably disposed at the rear side of the first housing 35 and the front side of the inner ring of the second planet carrier 25. Three first planet gears 29 are rotatably disposed in the first planet carrier 31. A first ring gear meshing with the first planet gears 29 is disposed in the intermediate housing 36. A first sun gear 37 is disposed on the outer surface of the transmission shaft 39. The first sun gear 37 is meshed with the first planet gears 29. The transmission shaft 39 movably passes through the second sun gear 23. By driving the first sun gear 37 to rotate through the transmission shaft 39, after the first sun gear 37 meshes with the first planet gears 29, the first planet carrier 31 can be driven to rotate in the intermediate housing 36 and the second planet carrier 25.

[0034] Advantageously, the second reduction structure includes three second planet gears 24 rotatably disposed in the second planet carrier 25. The second sun gear 23 is meshed with the second planet gears 24. The second sun gear 23 is fixedly connected with the first planet carrier 31. Three inner cavities 38 are disposed in the second planet carrier 25. The second sun gear 23 passes through the inner cavities 38 and then meshes with a second ring gear 41 on the inner side of the second housing 26. Since the second ring gear 41 is integrally connected with the second housing 26, after the first planet carrier 31 rotates, power can be transmitted to the second sun gear 23 and the second ring gear 41 through the second sun gear 23, so that the second housing 26 drives the wheel 27 to rotate, realizing the reduction drive function.

[0035] When the steering wheel steers, since the meshing gear 13 needs to be installed on the vehicle body, after the motor 11 works, it drives the transmission gear 12 to rotate. The transmission gear 12 rolls on the outer surface of the meshing gear 13, driving structures such as the first box body 35 and the wheel 27 to rotate around the meshing gear 13, realizing the steering function.

[0036] The drive motor 21 is installed at the rear side of the second planet carrier 25, and the output shaft of the drive motor 21 is power-connected to the transmission shaft 39. The transmission shaft 39 extends into the brake disc 32 and is power-connected, enabling the brake disc 32 to brake the transmission shaft 39.

[0037] When the speed reducer gear set works, after the transmission shaft 39 rotates, it drives the first sun gear 37 to rotate. Since the transmission shaft 39 is rotationally and movably connected to the second planet carrier 25 and the first box body 35, and the first sun gear 37 is fixed to the transmission shaft 39, the first planet gear 29 can be driven to rotate. Since the first planet carrier 31 is rotationally arranged in the first box body 35 and the second planet carrier 25, and the intermediate box body 36, the intermediate box body 36 and the second planet carrier 25 are integrally fixed, the first planet gear 29 rolls around the first tooth ring in the intermediate box body 36, and the first planet carrier 31 makes a speed-reducing rotational motion. Since the first planet carrier 31 is fixedly connected to the second sun gear 23, and the transmission shaft 39 passes through the second sun gear 23 movably, the two do not interfere with each other.

[0038] Since the second planet carrier 25 is rotationally arranged on one side of the second box body 26, and the second sun gear 23 is fixed to the first planet carrier 31, the two can move synchronously. Since the second planet gear 24 meshes with the second sun gear 23, and the second planet gear 24 passes through the inner cavity 38 to mesh with the second tooth ring 41 on the inner ring of the second box body 26, the meshing of the second sun gear 23, the second planet gear 24 and the second tooth ring 41 drives the second box body 26 to make a speed-reducing motion. Since the second box body 26 is detachably connected and fixed to the wheel 27, the wheel 27 can be driven to rotate.

[0039] Through the two-stage speed reducer assembly, the power of the drive motor 21 is transmitted to the wheel 27 after deceleration, causing the wheel 27 to roll.

[0040] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present invention; therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A speed reducer wheel set, comprising an integrated transmission shaft (39), a first box body (35), an intermediate box body (36) and a second planet carrier (25), characterized in that, The intermediate box body (36), the first box body (35) and the second planet carrier (25) are fixedly connected. The transmission shaft (39) is rotatably arranged in the second planet carrier (25) and the first box body (35). The outer surface of the second planet carrier (25) is rotatably provided with a second box body (26). The outer surface of the second box body (26) is detachably provided with wheels (27). The transmission shaft (39) is power-connected to the second box body (26) and the wheels (27) through a two-stage planetary gear reduction assembly.

2. A speed reducer wheel set according to claim 1, characterized in that: The transmission shaft (39) passes through the intermediate box body (36), the first box body (35) and the second planet carrier (25). The transmission shaft (39) is rotatably connected to the second planet carrier (25) and the first box body (35) through a first bearing. The first bearing is arranged at the rear side of the second planet carrier (25) and the rear side of the first box body (35).

3. A speed reducer wheel set according to claim 1, characterized in that: The two-stage planetary gear reduction assembly includes two second bearings arranged on the inner ring of the second box body (26). The second bearings rotatably connect the second box body (26) and the second planet carrier (25). There is one third bearing at the front and one at the rear on the inner ring of the second planet carrier (25). The third bearings rotatably connect the second planet carrier (25) and the transmission shaft (39). A first reduction structure is arranged in the first box body (35) and the intermediate box body (36). A second reduction structure is arranged at the rear side of the first reduction structure. A second sun gear (23) is connected between the first reduction structure and the second reduction structure. The transmission shaft (39) is power-connected to the first reduction structure.

4. A speed reducer wheel set according to claim 3, characterized in that: The second bearings are arranged on the front and rear sides of the inner ring of the second box body (26).

5. A speed reducer wheel set according to claim 3, characterized in that: The first reduction structure includes a first planet carrier (31). The first planet carrier (31) is rotatably arranged at the rear side of the first box body (35) and the front side of the inner ring of the second planet carrier (25). Three first planet gears (29) are rotatably arranged in the first planet carrier (31). A first tooth ring meshing with the first planet gears (29) is arranged in the intermediate box body (36). A first sun gear (37) is arranged on the outer surface of the transmission shaft (39). The first sun gear (37) is meshed with the first planet gears (29). The transmission shaft (39) movably passes through the second sun gear (23).

6. A speed reducer wheel set according to claim 5, characterized in that: The second reduction structure includes three second planet gears (24) rotatably arranged in the second planet carrier (25). The second sun gear (23) is meshed with the second planet gears (24). The second sun gear (23) is fixedly connected with the first planet carrier (31). Three inner cavities (38) are arranged in the second planet carrier (25). The second sun gear (23) passes through the inner cavities (38) and then meshes with a second tooth ring (41) on the inner side of the second box body (26).

7. A heavy-duty horizontal steering wheel installed with a speed reducer wheel set as described in any one of claims 1-6, characterized in that: It further includes a first box body (35). A connecting plate is provided at the top of the first box body (35). A meshing gear (13) is rotatably provided at the top of the first box body (35), and the meshing gear (13) is rotatably provided above the connecting plate. A motor (11) is provided at the lower side of the connecting plate. A driving gear (12) is power-connected to the top side of the motor (11). The driving gear (12) is meshed with the meshing gear (13). A speed reducer wheel set is provided at one side of the first box body (35). A brake disc (32) is provided at the front side of the speed reducer wheel set, and a driving motor (21) is provided at the rear side of the speed reducer wheel set. The brake disc (32) and the driving motor (21) are power-connected to the speed reducer wheel set.

8. The heavy-duty horizontal steering wheel of a speed reducer wheel set according to claim 7, characterized in that: The transmission shaft (39) is power-connected to the driving motor (21) and the brake disc (32).

9. The heavy-duty horizontal steering wheel of a speed reducer wheel set according to claim 7, characterized in that: A front side box body (34) is further provided at the front side of the first box body (35), and the brake disc (32) is installed at the front side of the front side box body (34).

10. The heavy-duty horizontal steering wheel of a speed reducer wheel set according to claim 7, characterized in that: The driving motor (21) is installed at the rear side of the second planet carrier (25).

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