Controllable driving force direction driving wheel

Abstract

The present invention discloses a controllable driving force direction driving wheel, in which a cam plate and a telescopic support device are arranged inside to form a cam mechanism, so that the retractable gear teeth are realized. The cam plate positioning assembly is used to adjust the angle of the cam plate, so that the gear teeth can only protrude outward to form support when rotating to the obliquely downward direction of the forward direction, thereby transmitting effective power to the roadbed to avoid slipping. When the gear teeth run to the right bottom, they have been retracted, so the soft roadbed will not be thrown out to the rear of the wheel, so that it can move forward smoothly but will not dig a pit and fall into it. Since the gear teeth are retractable, they are not easy to be entangled with debris, and the situation of affecting the operation due to entanglement with debris is effectively avoided. Obviously, the driving wheel has better passability in soft and rotten land and sandy environments such as paddy fields, deserts, and swamps, and is particularly suitable for use in small engineering machinery. In addition, through the retractable setting of the gear teeth, the driving wheel can also drive ships or submersibles underwater.

Description

Technical Field

[0001] The invention relates to a driving wheel, in particular to a driving wheel with controllable driving force direction. Background Art

[0002] At present, there are mainly two types of driving wheels for paddy field agricultural machinery, sandy land and forest and swamp environment engineering machinery.

[0003] One is the common wheel, which is easy to slip and sink when working in soft soil, sand, and muddy environment, and the passing effect is poor. Some of them are equipped with deeper teeth on the circumference of the wheel to improve the passing performance. Although this will produce certain positive effects, since there are often many weeds in the working environment of these machines, the teeth will bring the weeds to entangle the drive shaft, which will eventually affect the rotation of the wheel.

[0004] The other is crawler type, which has a significantly stronger passability than ordinary wheels and can generally adapt to various soft and rotten land or sandy environments. However, it is often thick and heavy, which will seriously affect the moving speed and mobility of small machines with low horsepower. Summary of the invention

[0005] Purpose of the invention: In order to overcome the defects of the prior art, the present invention provides a drive wheel with controllable driving force direction, which has better passability in soft and rotten land and sandy environments such as paddy fields, deserts, and swamps, and is particularly suitable for use in small engineering machinery.

[0006] Technical solution: The controllable driving force direction driving wheel described in the present invention is characterized by comprising:

[0007] Base shaft disc;

[0008] A rotating rolling part, which is rotatably connected to the outer periphery of the base shaft disk, comprises a wheel rim, a plurality of telescopic support devices and an inner gear ring; the wheel rim is provided with a plurality of through holes evenly spaced in its circumferential direction, the plurality of telescopic support devices are arranged one by one on the inner sides of the plurality of through holes, the telescopic support devices comprise gear teeth that can protrude outward from the through holes and a return spring for retracting the gear teeth to the inner sides of the through holes; the inner gear ring is connected to the wheel rim to drive it to rotate;

[0009] A cam plate, which is rotatably connected to the base shaft plate coaxially and abuts against the telescopic support device to form a cam mechanism for pushing the gear teeth to protrude outward from the through hole;

[0010] A power input assembly, which transmits power to the inner gear ring through gears, and causes the cam plate to rotate relative to the rotating rolling portion through the relative movement of the gears and the inner gear ring;

[0011] A cam plate positioning assembly connects the base shaft plate and the cam plate and has a first state and a second state; in the first state, it can prevent the cam plate from rotating relative to the base shaft plate; in the second state, the cam plate can rotate relative to the base shaft plate.

[0012] Working principle: The controllable driving force direction driving wheel is mainly used as the wheel of engineering machinery. It is connected to the vehicle through its base shaft disc. The base shaft disc cannot rotate because it is fixed by the vehicle. Before construction in soft and rotten land and sandy environments such as paddy fields, deserts, swamps, etc., first adjust the cam disc positioning assembly to the second state. In this state, the cam disc can rotate relative to the base shaft disc, and the cam disc is in a relatively free state capable of 360° circular motion. At this time, the rotating and rolling part is artificially restrained to prevent it from rotating, and power is applied through the power input assembly. The reaction force of the inner ring gear on the gear drives the cam disc to rotate, so that its top rotates to a position obliquely below the forward direction of the wheel, and then the cam disc positioning assembly is adjusted to the first state, and the wheel can be put into operation. When the vehicle moves forward, the rotating rolling part of the wheel rolls on the ground. At this time, the cam plate positioning assembly will prevent the cam plate from rotating relative to the base shaft plate, that is, the cam plate can always maintain its top end pointing diagonally downward in the direction of the wheel's movement. The gear teeth of the telescopic support device rotated to this position can always be pushed out of the through hole by the cam plate, forming support diagonally downward in the direction of the wheel's movement, transmitting effective power to the roadbed and preventing the wheel from slipping. The gear teeth of the telescopic support device rotated to the bottom of the wheel have moved to the perfect circular contour of the cam plate, and the gear teeth have shrunk into the wheel rim, so the soft roadbed will not be thrown out, so the wheel moves forward but will not dig a pit and fall into it.

[0013] In one embodiment, the power input assembly comprises:

[0014] An input shaft, which is relatively rotatably disposed through the center of the base shaft disk and the cam disk, and on which an input gear is disposed;

[0015] an intermediate shaft connected to the cam plate and parallel to the input shaft;

[0016] The intermediate gear is rotatably arranged on the intermediate shaft and meshes between the input gear and the inner gear ring. In this embodiment, the input shaft can be arranged the same as that of a common vehicle, and the power can be provided by the engine / motor of the vehicle.

[0017] Specifically, the base shaft disk has a first bearing on its periphery and a second bearing in its center, and the cam disk has a third bearing in its center; the rotating rolling part is connected to the outer ring of the first bearing, and the input shaft is connected to the inner rings of the second bearing and the third bearing.

[0018] In one embodiment, the power input assembly comprises:

[0019] The driver is arranged at an eccentric position of the cam plate, and an input gear is arranged at its output end, and the input gear meshes with the inner gear ring. In this embodiment, the input shaft is no longer arranged to provide power as in ordinary vehicles, but is directly provided by the driver arranged on the cam plate, thereby simplifying the structure and further avoiding the influence of sundries such as entanglement of weeds on operation.

[0020] In one embodiment, the power input assembly comprises:

[0021] An input shaft is rotatably arranged at an eccentric position of the cam disc, on which an input gear is arranged, and the input gear meshes with the inner gear ring. In this embodiment, the input shaft is no longer arranged as in a normal vehicle, but is provided by a drive device arranged outside the cam disc and rotating with it.

[0022] Among them, the cam plate positioning assembly includes a first gear coaxially connected to the cam plate, a gear pin rotatably connected to the base shaft plate, a second gear connected to the gear pin, and a positioning portion arranged on the base shaft plate; the gear pin is engaged with the cam plate through the second gear and the first gear to achieve linkage with the cam plate; the positioning portion can be used to prevent the gear pin from rotating relative to the base shaft plate in the first state, thereby preventing the cam plate from rotating relative to the base shaft plate.

[0023] Specifically, a movable blocking lever is provided on the gear pin shaft, and the first state and the second state are realized through the movement of the blocking lever.

[0024] Preferably, there are two positioning parts, namely a forward positioning part and a reverse positioning part, which are respectively used to hinder the cam plate from rotating relative to the base shaft plate when the rotating rolling part rolls forward and backward.

[0025] Preferably, the rotating rolling part also includes an annular spoke plate, the outer edge of the spoke plate is connected to the wheel rim, and the inner ring is rotatably connected to the outer periphery of the base shaft disk; the spoke plate and the inner gear ring are respectively arranged on both sides of the wheel rim in the width direction.

[0026] Preferably, the telescopic support device further comprises a gear tooth roller abutting against the cam plate and connected to the end of the gear tooth.

[0027] Beneficial effects: Compared with the prior art, the drive wheel realizes the retractability of the gear teeth by arranging a cam disc and a telescopic support device inside the drive wheel to form a cam mechanism. The cam disc positioning assembly is used to adjust the angle of the cam disc, so that the gear teeth can only protrude outward to form support when they rotate to the obliquely downward direction of the forward direction, thereby transmitting effective power to the roadbed to avoid slipping. When the gear teeth run to the bottom, they have shrunk, so the soft roadbed will not be thrown behind the wheel, so that it can move forward smoothly without digging a pit. Since the gear teeth are retractable, they are not easy to be entangled with debris, which effectively avoids the situation where the operation is affected by entanglement with debris. Obviously, the drive wheel has better passability in soft and rotten land and sandy environments such as paddy fields, deserts, and swamps, and is particularly suitable for use in small engineering machinery. In addition, through the retractable setting of the gear teeth, the drive wheel can also drive ships or submersibles underwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the three-dimensional structure of embodiment 1 of the present invention;

[0029] Figure 2 is a schematic diagram of the main structure of Embodiment 1 of the present invention;

[0030] Figure 3 is a rear view structural schematic diagram of embodiment 1 of the present invention;

[0031] Figure 4 is a schematic diagram of the three-dimensional structure of Embodiment 1 of the present invention viewed from the side and rear;

[0032] Figure 5 yes Figure 2 A right view structural diagram of ;

[0033] Figure 6 is a schematic cross-sectional structural diagram of embodiment 1 of the present invention;

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating and rolling part of the present invention;

[0035] Figure 8 It is a schematic diagram of the three-dimensional structure of the rotating and rolling part of the present invention when viewed from the side and rear;

[0036] Fig. 9 is a schematic diagram of the internal structure of Embodiment 1 of the present invention;

[0037] Fig.10 yes Fig. 9 Schematic diagram of the internal structure;

[0038] Fig.11 yes Fig. 9 Right view of the internal structure;

[0039] Fig.12 yes Fig. 9 A three-dimensional schematic diagram of the internal structure viewed from the side and rear;

[0040] Fig.13 yes Figure 4 A schematic diagram of the partial structure of a wheel after being disassembled;

[0041] Fig.14 is a schematic diagram of the main structure of Embodiment 2 of the present invention;

[0042] Fig.15 is a schematic diagram of the three-dimensional structure of embodiment 2 of the present invention;

[0043] Fig.16 It is a schematic diagram of the partial structure after the input gear is disassembled in Example 2 of the present invention. DETAILED DESCRIPTION

[0044] The present invention is further described in detail below with reference to the accompanying drawings.

[0045] The driving wheel is mainly used as a wheel for small paddy field agricultural machinery, sandy land and forest and swamp environment engineering machinery.

[0046] The controllable driving force direction driving wheel in embodiment 1 is roughly cylindrical and connected to the vehicle through a base shaft plate 1 arranged on the side. Figure 3-Figure 6 as well as Fig.13 A plurality of connecting pieces connected to the vehicle are arranged on the outer side of the base axle disc 1, and of course, the connection with the vehicle can also be achieved by bolts or welding. On the other hand, the base axle disc 1 also provides support for the rotating rolling part of the wheel to ensure the rigidity of the entire wheel circumference. In this embodiment, a first bearing is arranged on the outer periphery of the base axle disc 1, and a second bearing (not shown in the figure) is arranged in the center to ensure that each component can rotate smoothly.

[0047] The rotating rolling part is the main part of the wheel to achieve walking. Please refer to Figure 1-2 , Figure 7-Figure 12 , especially among them Figure 7 and Figure 8 The specific structure of the rotating rolling part is shown, which includes a wheel rim 2, a telescopic support device 3, an inner gear ring 4 and a spoke plate 15.

[0048] The wheel rim 2 is a cylindrical structure made of metal, and its width and thickness are set according to actual needs. The wheel rim 2 is provided with a plurality of through holes 21 evenly spaced in the circumferential direction. The number of through holes 21 is determined according to the number of telescopic support devices 3, and the shape is determined according to the shape of the gear teeth 31. The requirement is that the outer contour of the gear teeth 31 can fit the inner wall of the through holes 21 without a gap between the two, that is, the protruding part of the gear teeth 31 can have no space to shake, so as to ensure sufficient rigidity, and prevent mud and other debris from seeping through the gap.

[0049] The telescopic support device 3 is fixed on the inner wall of the wheel rim 2, corresponding to the through hole 21. It includes a gear tooth 31, a return spring 32 sleeved on the gear tooth 31, and a gear tooth roller 33 arranged at the end of the gear tooth 31. Please refer to Figure 9-12 The main body of the gear tooth 31 is cylindrical, and two support plates are respectively arranged on the side of the cylindrical main body along the width direction of the wheel rim 2, and the corresponding through hole 21 is also arranged in this shape. In addition to the gear tooth roller 33, a limit plate is connected to the end of the gear tooth 31 to compress the reset spring 32 when the gear tooth 31 extends outward. The gear tooth roller 33 is used to reduce the friction with the cam plate 5.

[0050] The spoke plate 15 and the inner gear ring 4 are respectively arranged on both sides of the wheel rim 2. The spoke plate 15 is annular, and its outer edge is connected to the inner wall of the wheel rim 2. The inner ring is connected to the outer ring of the first bearing, which is used to support the wheel rim 2 and ensure the rigidity of the wheel. A cover plate (not shown in the figure) is also arranged on one side of the wheel rim 2 where the inner gear ring 4 is arranged. On the one hand, it is used to close the wheel, and on the other hand, a bearing is arranged in the center. The outer end of the input shaft 6 can be connected to the inner ring of the bearing.

[0051] The cam plate 5 is arranged inside the wheel, a third bearing is arranged at the center thereof, and an intermediate shaft 8 is arranged at an eccentric position. In this embodiment, the intermediate shaft 8 is arranged at the top area of ​​the cam plate 5, parallel to the input shaft 6, and is connected to the intermediate gear 9 via a bearing. The side surface of the cam plate 5 abuts against each telescopic support device 3 to form a cam mechanism, so as to push the gear teeth 31 to protrude outward from the through hole 21 during relative rotation.

[0052] In this embodiment, the power is input through the input shaft 6. Specifically, the input shaft 6 is similar to the power input shaft of an ordinary vehicle. It passes through the second bearing of the base shaft plate 1 from the bottom of the car body and is installed in the wheel. It passes through the third bearing in the center of the cam plate 5 inside the wheel and extends all the way to the bearing in the center of the cover plate. A synchronously rotating input gear 7 is arranged on it. The input gear 7 meshes with the intermediate gear 9 and transmits the power to the inner gear ring 4 through the intermediate gear 9.

[0053] The cam plate positioning assembly includes a first gear 10, a gear pin 11, a second gear 12 and two positioning parts 13. The first gear 10 is coaxially connected to the side of the cam plate 5 close to the base shaft plate 1, the gear pin 11 is relatively rotatably arranged in the base shaft plate 1, and the second gear 12 is connected thereto and meshes with the first gear 10. Therefore, when the cam plate 5 rotates, the first gear 10 rotates, driving the second gear 12 to rotate, and then driving the gear pin 11 to rotate. Therefore, the positioning part 13 is provided on the fixed base shaft plate 1, and the blocking rod 14 is provided on the gear pin 11. The positioning part 13 blocks the blocking rod 14, which can prevent the cam plate 5 from rotating relative to the base shaft plate 1. According to the working principle of the wheel, its cam plate 5 should be able to adjust the direction of the top protrusion, so that the blocking rod 14 can be set to a structure that can move between an open position and a closed position. When in the closed position, the positioning portion 13 can block the blocking rod 14. When in the open position, the blocking rod 14 can rotate along with the gear pin 11 without being blocked by the positioning portion 13.

[0054] In addition, since the wheel has a forward state and a reverse state, two positioning parts 13 are provided, corresponding to the forward position and the reverse position respectively. When the wheel is moving forward and the forward positioning part 13 blocks the blocking rod 14, the top protruding part of the cam plate 5 just points diagonally downward in the forward direction of the wheel. When the wheel is moving backward and the reverse positioning part 13 blocks the blocking rod 14, the top protruding part of the cam plate 5 just points diagonally downward in the reverse direction of the wheel.

[0055] Power is provided from the input shaft 6 and transmitted to the rotating rolling part of the wheel through the input gear 7, the intermediate gear 9 and the inner ring gear 4, causing the part to roll, and then the wheel moves forward or backward. Due to the action of the cam plate positioning assembly, the cam plate 5 is positioned so as not to rotate, and its top protruding part always points to the lower side of the running direction of the wheel. The gear teeth 31 rotated to this position are pushed out of the through hole 21 by the cam plate 5, forming support on the ground, transmitting a large amount of effective power to the roadbed, driving the wheel forward and avoiding slipping. In addition, the gear teeth 31 rotated to the bottom of the wheel have turned from the top protruding part of the cam plate 5 to the perfect circular contour of the cam plate, and the gear teeth 31 gradually retract into the through hole 21, and will not run out of the soft roadbed, so the wheel moves forward but will not slip and dig a hole.

[0056] In addition, it also provides Figures 14 to 16 In the embodiment 2 shown, the connection between the wheel and the vehicle is still through the base axle plate 1, but the difference is that the input shaft at the lower part of the carriage can be removed in the embodiment 2. Specifically, a driver (such as a motor) can be arranged at the eccentric position of the cam plate 5, and an input gear can be arranged at its output end, and the power is transmitted by the input gear meshing with the inner gear ring 4. In this embodiment, because the input shaft is no longer arranged at the lower part of the carriage, it is less likely to be entangled by weeds, and the structure of the entire vehicle is simpler and lighter, and it is not easy to sink into mud and sand.

[0057] Furthermore, for Example 2, the driving device can also be arranged outside the cam plate 5, and its input shaft can be rotatably penetrated at the eccentric position of the cam plate 5, and an input gear is arranged thereon to mesh with the inner gear ring 4 to transmit power.

[0058] Of course, since the driving wheel has retractable gear teeth, it can also be used underwater to provide power for ships or submersibles.

Claims

1. A driving wheel with controllable driving force direction, characterized in that: include: Base shaft disc (1); A rotating rolling part, which is rotatably connected to the outer periphery of the base shaft disk (1), comprises a wheel rim (2), a plurality of telescopic support devices (3) and an inner gear ring (4); the wheel rim (2) is provided with a plurality of through holes (21) evenly spaced in the circumferential direction thereof, the plurality of telescopic support devices (3) are arranged one by one on the inner sides of the plurality of through holes (21), the telescopic support devices (3) comprising gear teeth (31) that can protrude outwardly from the through holes (21) and a return spring (32) for retracting the gear teeth (31) toward the inner sides of the through holes (21); the inner gear ring (4) is connected to the wheel rim (2) to drive the wheel rim (2) to rotate; A cam plate (5) which is rotatably coaxially connected to the base shaft plate (1) and abuts against the telescopic support device (3) to form a cam mechanism for pushing the gear teeth (31) to protrude outward from the through hole (21); A power input assembly, which transmits power to the inner gear ring (4) via a gear, and causes the cam plate (5) to rotate relative to the rotating rolling portion through relative movement between the gear and the inner gear ring (4); A cam plate positioning assembly connects the base shaft plate (1) and the cam plate (5) and has a first state and a second state; in the first state, it is possible to prevent the cam plate (5) from rotating relative to the base shaft plate (1); in the second state, the cam plate (5) is able to rotate relative to the base shaft plate (1). The cam plate positioning assembly comprises a first gear (10) coaxially connected to the cam plate (5), a gear pin (11) rotatably connected to the base shaft plate (1), a second gear (12) connected to the gear pin (11), and a positioning portion (13) arranged on the base shaft plate (1); the gear pin (11) is meshed with the first gear (10) via the second gear (12) to achieve linkage with the cam plate (5); the positioning portion (13) can be used to prevent the gear pin (11) from rotating relative to the base shaft plate (1) in the first state, thereby preventing the cam plate (5) from rotating relative to the base shaft plate (1). A movable blocking rod (14) is provided on the gear pin shaft (11), and the first state and the second state are achieved through the movement of the blocking rod (14). There are two positioning parts (13), namely a forward positioning part and a reverse positioning part, which are used to respectively prevent the cam plate (5) from rotating relative to the base shaft plate (1) when the rotating rolling part rolls forward and backward.

2. The controllable driving force direction driving wheel according to claim 1, characterized in that: The power input assembly comprises: An input shaft (6) is rotatably disposed through the center of the base shaft disk (1) and the cam disk (5), and an input gear (7) is disposed on the input shaft (6); An intermediate shaft (8) connected to the cam plate (5) and parallel to the input shaft (6); An intermediate gear (9) is rotatably arranged on the intermediate shaft (8) and meshes between the input gear (7) and the inner gear ring (4).

3. The controllable driving force direction driving wheel according to claim 2, characterized in that: The base shaft disc (1) has a first bearing on its outer periphery and a second bearing in its center, and the cam disc (5) has a third bearing in its center; the rotating rolling portion is connected to the outer ring of the first bearing, and the input shaft is connected to the inner rings of the second bearing and the third bearing.

4. The controllable driving force direction driving wheel according to claim 1, characterized in that: The power input assembly comprises: A driver (16) is arranged at an eccentric position of the cam disc (5), and an input gear is arranged at its output end, the input gear meshing with the inner gear ring (4).

5. The controllable driving force direction driving wheel according to claim 1, characterized in that: The power input assembly comprises: An input shaft is rotatably arranged at an eccentric position of the cam plate (5), and an input gear is arranged on the input shaft, the input gear meshes with the inner gear ring (4).

6. The controllable driving force direction driving wheel according to claim 1, characterized in that: The rotating rolling part further comprises an annular spoke plate (15), the outer edge of the spoke plate (15) being connected to the wheel rim (2), and the inner ring being rotatably connected to the outer periphery of the base shaft disc (1); the spoke plate (15) and the inner gear ring (4) are respectively arranged on both sides of the wheel rim (2) in the width direction.

7. The controllable driving force direction driving wheel according to claim 1, characterized in that: The telescopic support device (3) further comprises a gear tooth roller (33) abutting against the cam plate (5) and connected to the end of the gear tooth (31).

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