Forklift omnidirectional drive assembly

Abstract

The present invention provides an omnidirectional forklift driving assembly, comprising a housing, a rotating mechanism and a traveling mechanism; further comprising a movable connection component; a slewing support bearing of the rotating mechanism is installed in the housing; a first motor is fixed to one side of the housing and is transmission-connected to the slewing support bearing through a first transmission component; an encoder component is installed in the housing; the movable connection component is installed at the bottom of the slewing support bearing; a first bevel gear is provided on the movable connection component; a gear plate on the traveling mechanism is located above the slewing support bearing; a second motor is fixed to one side of the housing and is transmission-connected to the gear plate through a second transmission component; the second bevel gear is fixed to the bottom of the gear plate and is rotationally connected to the first bevel gear; two sets of wheel assemblies are rotationally connected to the front and rear sides of a transmission box respectively; a third bevel gear is installed on one set of the wheel assemblies and is transmission-connected to the first bevel gear; the present invention has convenient wiring and stable structure.

Description

Technical Field

[0001] The invention relates to the technical field of drive assemblies, and in particular to an omnidirectional forklift drive assembly. Background Art

[0002] The drive of a forklift needs to realize steering and traveling functions. In the past, there were the following driving methods: 1. The steering drive mechanism is first installed on the bottom of the vehicle, and then the traveling mechanism is installed under the steering drive. This method has a high overall height and is inconvenient to assemble. During use, the motor on the traveling mechanism also rotates, the line is easily messy, and the stability is low; 2. Steering and traveling are combined together, and the traveling mechanism is integrated into the frame. The steering motor is installed on one side of the frame and meshes with the gear plate to drive the whole to rotate to achieve steering. A wire hole is reserved in the center of the frame for the line to pass through and connect with the motor on the traveling mechanism. Although this method combines steering and traveling and solves the problem of assembly difficulty, during use, the motor on the traveling mechanism still needs to rotate around the center of the frame, which causes the line to easily get tangled together, resulting in failures in use, so it needs to be improved. Summary of the invention

[0003] The object of the present invention is to provide an omnidirectional drive assembly for a forklift to solve the problems mentioned in the background technology.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] An omnidirectional forklift drive assembly comprises a housing, a rotating mechanism and a walking mechanism; it also comprises an active connection assembly; the rotating mechanism comprises a first motor, a first transmission assembly, a slewing support bearing and an encoder assembly; the slewing support bearing is installed in the housing; the first motor is fixed to one side of the housing and is connected to the slewing support bearing through the first transmission assembly; the encoder assembly is installed in the housing and connected to the slewing support bearing; the active connection assembly comprises a transmission shaft, a first bevel gear, two shaft seats and a transmission box; the transmission box is located at the bottom of the slewing support bearing; the two shaft seats are respectively arranged on the left and right sides of the transmission box; the transmission shaft is connected to the The first bevel gear is connected between two shaft seats and a transmission box; the first bevel gear is mounted on the transmission shaft and is located in the transmission box; the walking mechanism comprises a second motor, a second transmission assembly, a gear plate, a second bevel gear, a third bevel gear and two sets of wheel assemblies; the gear plate is rotatably mounted in the housing and is located above the slewing support bearing; the second motor is fixed to one side of the housing and is transmission-connected to the gear plate through the second transmission assembly; the second bevel gear is fixed to the bottom of the gear plate and extends into the transmission box and is rotationally connected to the first bevel gear; the two sets of wheel assemblies are rotationally connected to the front and rear sides of the transmission box respectively; the third bevel gear is mounted on one set of the wheel assemblies and is transmission-connected to the first bevel gear.

[0006] Further description of the present invention, the shell includes a bottom shell and an upper shell; the upper shell is fixed above the bottom shell; the bottom shell is provided with a first mounting portion and a second mounting portion, a third mounting portion and a fourth mounting portion which are arranged in parallel front and back on the left side of the first mounting portion; the slewing support bearing is installed on the first mounting portion; the first transmission assembly and the first motor are installed on the second mounting portion; the encoder assembly is installed on the second mounting portion; the second transmission assembly and the second motor are installed on the third mounting portion.

[0007] Further description of the present invention, a groove is provided above the first mounting portion; the slewing support bearing is fixed on the groove; the slewing support bearing includes an outer ring and an inner ring rotatably connected to the outer ring; the inner ring protrudes above the outer ring; the inner ring has external teeth; an axial hole is provided at the center of the inner ring; a shaft rod is provided at the bottom of the gear plate; the shaft rod is rotatably connected to the shaft hole through a bearing; the second bevel gear is fixed to the bottom of the shaft rod by screw locking.

[0008] Further description of the present invention, the second mounting portion includes a first mounting hole arranged vertically and a second mounting hole arranged horizontally; the second mounting hole is connected to the first mounting hole; the first transmission assembly includes a transmission rod, a fourth bevel gear and a first gear; the transmission rod is rotatably connected in the first mounting hole; the fourth bevel gear is fixed at the lower end of the transmission rod; the first gear is fixed at the upper end of the transmission rod and meshes with the outer teeth of the outer ring; the first motor is fixed in the second mounting hole; the power output end of the first motor is provided with a fifth bevel gear; the fifth bevel gear meshes with the fourth bevel gear; the structure of the fourth mounting portion is the same as that of the second mounting portion; the structure of the second transmission assembly is the same as that of the first transmission assembly; the first gear on the second transmission assembly meshes with the gear plate.

[0009] Further description of the present invention, the third mounting portion includes a third mounting hole and a fourth mounting hole which are distributed left and right and vertically arranged; the encoder assembly includes an encoder, a second gear and a third gear; the encoder is fixed in the third mounting hole; the second gear is installed above the encoder; the third gear is rotatably connected to the fourth mounting hole and respectively meshes with the second gear and the outer teeth of the inner ring.

[0010] To further describe the present invention, air avoidance holes are respectively provided on the inner ring at positions corresponding to the positions of the two sets of wheel assemblies.

[0011] To further describe the present invention, a positioning truncated cone is provided at the center position above the gear plate; a positioning hole cooperating with the positioning truncated cone is provided on the upper shell; and the positioning truncated cone is inserted into the positioning hole for positioning.

[0012] To further describe the present invention, the upper shell is provided with two pin holes; positioning pins are inserted into the pin holes.

[0013] The beneficial effects of the present invention are:

[0014] The present invention integrates the rotating mechanism and the traveling mechanism in a casing. When in use, the driving assembly can be directly assembled on the forklift, which is easy to assemble. In addition, the present design fixes the two driving motors on one side of the casing, which not only greatly reduces the overall height of the driving assembly to improve the stability of the movement, but also the driving method is to transmit the first transmission component and the second transmission component to the slewing support bearing and the gear plate respectively to realize steering and wheel travel, while the motor is fixed, which solves the problem of motor line winding, and there is no need to worry about the problem of motor entanglement and knotting during use. It is safer and more stable to use, and the two sets of wheel assemblies on the traveling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structure diagram of the present invention;

[0016] Figure 2 is a top view of the present invention;

[0017] Figure 3 yes Figure 2 Sectional view of AA in the middle;

[0018] Figure 4 yes Figure 2 Cross-sectional view of the middle BB;

[0019] Figure 5 It is a structural diagram of the bottom shell of the present invention;

[0020] Figure 6 It is a structural diagram of the upper shell of the present invention;

[0021] Figure 7 It is the internal structure diagram of the present invention;

[0022] Figure 8 It is a structural diagram of the connection between the movable connection assembly of the present invention and two sets of wheel assemblies;

[0023] Fig. 9 It is a structural diagram of the connection between the first motor and the first transmission assembly of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] like Figure 1-9As shown, an omnidirectional forklift drive assembly includes a housing 1, a rotating mechanism 2 and a walking mechanism 3; it also includes a movable connection component 4; the rotating mechanism 2 includes a first motor 21, a first transmission component 22, a slewing support bearing 23 and an encoder 241 component 24; the slewing support bearing 23 is installed in the housing 1; the first motor 21 is fixed to one side of the housing 1 and is transmission-connected to the slewing support bearing 23 through the first transmission component 22; the encoder 241 component 24 is installed in the housing 1 and connected to the slewing support bearing 23; the movable connection component 4 includes a transmission shaft 41, a first bevel gear 42, two shaft seats 43 and a transmission box 44; the transmission box 44 is located at the bottom of the slewing support bearing 23; the two shaft seats 43 are respectively arranged on the left and right sides of the transmission box 44; the transmission shaft 41 rotates connected between two shaft seats 43 and a transmission box 44; the first bevel gear 42 is mounted on the transmission shaft 41 and is located in the transmission box 44; the walking mechanism 3 includes a second motor 31, a second transmission assembly 32, a gear plate 33, a second bevel gear 34, a third bevel gear 35 and two sets of wheel assemblies 36; the gear plate 33 is rotatably mounted in the housing 1 and is located above the slewing support bearing 23; the second motor 31 is fixed to one side of the housing 1 and is transmission-connected to the gear plate 33 through the second transmission assembly 32; the second bevel gear 34 is fixed to the bottom of the gear plate 33 and extends into the transmission box 44 and is rotationally connected to the first bevel gear 42; the two sets of wheel assemblies 36 are rotationally connected to the front and rear sides of the transmission box 44 respectively; the third bevel gear 35 is mounted on one set of the wheel assemblies 36 and is transmission-connected to the first bevel gear 42;The present design integrates the rotating mechanism 2 and the walking mechanism 3 into a housing 1. When in use, the drive assembly can be directly assembled on the forklift, which is convenient to assemble. In addition, the present design fixes two drive devices (i.e., the first drive device and the second drive device) on one side of the housing 1, which not only greatly reduces the overall height of the drive assembly to improve the stability of the movement, but also the driving method is to transmit the first transmission component 22 and the second transmission component 32 to the slewing support bearing 23 and the gear plate 33 respectively. The first motor 21 drives the slewing support bearing 23 to rotate through the first transmission component 22, thereby driving the wheel component 36 to turn through the movable connection component 4, and the second motor 31 drives the gear plate 33 to rotate through the second transmission component 32, thereby transmitting the transmission to the first bevel gear 42 through the second bevel gear 34, and the first bevel gear 42 is then transmitted to The third bevel gear 35 drives one of the wheel assemblies 36 to walk, and the other wheel assembly 36 walks with it. Since the transmission shaft 41 is rotatably connected between the two shaft seats 43 and the transmission box 44, and the two shaft seats 43 are fixed at the bottom of the slewing support bearing 23, the transmission box 44 can rotate around the axis of the transmission shaft 41. The two sets of wheel assemblies 36 are installed on the transmission box 44. Therefore, when encountering bumpy sections during walking, the wheels on the two sets of wheel assemblies 36 can swing with it and keep in contact with the ground, and the walking stability is high. The design is fixed during use. The two drive devices are solved, and there is no need to worry about the motor winding and knotting during use. The use is safer and more stable, and the two sets of wheel assemblies 36 on the walking mechanism 3. ;

[0026] The shell 1 includes a bottom shell 11 and an upper shell 12; the upper shell 12 is fixed on the bottom shell 11; the bottom shell 11 is provided with a first mounting portion 111 and a second mounting portion 112, a third mounting portion 113 and a fourth mounting portion 114 arranged in parallel on the left side of the first mounting portion 111; the slewing support bearing 23 is installed on the first mounting portion 111; the first transmission assembly 22 and the first motor 21 are installed on the second mounting portion 112; the encoder 241 assembly 24 is installed on the second mounting portion 112; the second transmission assembly 32 and the second motor 31 are installed on the third mounting portion 113; this layout can reasonably utilize the space, the transmission part is arranged on the left, and the rotating and walking parts are arranged on the right, which reduces the height of the overall structure installation and improves the stability of the movement.

[0027] A recessed groove 1111 is provided above the first mounting portion 111; the slewing support bearing 23 includes an outer ring 231 and an inner ring 232 rotatably connected to the outer ring 231; the outer ring 231 is fixed on the recessed groove 1111; the inner ring 232 protrudes above the outer ring 231; the inner ring 232 has external teeth; an axial hole 2321 is provided at the center of the inner ring 232; a shaft rod 331 is provided at the bottom of the gear plate 33; the shaft rod 331 is rotatably connected to the shaft hole 2321 through a bearing; the second bevel gear 34 is fixed to the bottom of the shaft rod 331 by screw locking; the gear plates 33 are installed in parallel above the inner ring 232, and are rotatably connected to the shaft hole 2321 of the inner ring 232 through the shaft rod 331, so that the gear plate 33 and the slewing support bearing 23 can be aligned, thereby improving the assembly and transmission accuracy.

[0028] The second mounting portion 112 includes a first mounting hole 1121 arranged vertically and a second mounting hole 1122 arranged horizontally; the second mounting hole 1122 is communicated with the first mounting hole 1121; the first transmission assembly 22 includes a transmission rod 221, a fourth bevel gear 222 and a first gear 223; the transmission rod 221 is rotatably connected in the first mounting hole 1121; the fourth bevel gear 222 is fixed at the lower end of the transmission rod 221; the first gear 223 is fixed at the upper end of the transmission rod 221 and meshes with the outer teeth of the outer ring 231; the first motor 21 is fixed in the second mounting hole 1122; the power output end of the first motor 21 is provided with a fifth bevel gear 211; the fifth bevel gear 211 and the fourth bevel gear 222 is meshed; the structure of the fourth mounting portion 114 is the same as that of the second mounting portion 112; the structure of the second transmission assembly 32 is the same as that of the first transmission assembly 22; the first gear on the second transmission assembly 32 is meshed with the gear plate 33; the first motor 21 and the second motor 31 are installed horizontally to reduce the overall height, and the transmission is transmitted to the fourth bevel gear 222 through the fifth bevel gear 211, and then the first gear 223 above is driven to rotate through the transmission rod 221, the first gear 223 on the first transmission assembly 22 is meshed with the inner ring 232 of the slewing bearing to drive the inner ring 232 to rotate to achieve steering, and the second gear 242 on the second transmission assembly 32 is meshed with the gear plate 33 to achieve the movement of the wheel assembly 36.

[0029] The third mounting portion 113 includes a third mounting hole 1131 and a fourth mounting hole 1132 which are distributed on the left and right and vertically arranged; the encoder 241 assembly 24 includes an encoder 241, a second gear 242 and a third gear 243; the encoder 241 is fixed in the third mounting hole 1131; the second gear 242 is installed above the encoder 241; the third gear 243 is rotatably connected to the fourth mounting hole 1132 and meshes with the second gear 242 and the outer teeth of the inner ring 232 respectively; in order to save space to the maximum extent and reduce the overall width, the space between the encoder 241 and the slewing support bearing 23 is not enough to directly install the encoder 241, so the third gear 243 is used as a relay transmission.

[0030] The inner ring 232 is provided with avoidance holes 2321 at positions corresponding to the positions of the two sets of wheel assemblies 36. The wheels on the wheel assemblies 36 can pass through the avoidance holes 2321, and only the bottom of the wheels needs to extend out from under the outer shell 1, which makes rational use of the internal space and further reduces the overall height to improve stability.

[0031] A positioning boss 331 is provided at the center position above the gear plate 33; a positioning hole 121 cooperating with the positioning boss 331 is provided on the upper shell 12; the positioning boss 331 is inserted into the positioning hole 121 for positioning; the gear plate 33 and the upper shell 12 are aligned and positioned to improve assembly accuracy.

[0032] The upper shell 12 is provided with two pin holes 122 ; positioning pins 1201 are inserted into the pin holes 122 . When the drive assembly is installed on a forklift, the positioning is performed by the positioning pins 1201 to improve the installation accuracy.

[0033] The working principle of this embodiment:

[0034] The drive assembly is assembled on a forklift, the first motor 21 drives the slewing support bearing 23 to rotate through the first transmission assembly 22, the slewing support bearing 23 drives the movable connection assembly 4 fixedly connected thereto to rotate, the movable connection assembly 4 then drives the wheel assembly 36 to turn, the second motor 31 drives the gear plate 33 to rotate through the second transmission assembly 32, thereby transmitting the transmission to the first bevel gear 42 through the second bevel gear 34, the first bevel gear 42 then transmits the transmission to the third bevel gear 35 to drive one of the wheel assemblies 36 to walk, and the other wheel assembly 36 follows the walking, and since the transmission shaft 41 is rotatably connected between the two shaft seats 43 and the transmission box 44, and the two shaft seats 43 are fixed at the bottom of the slewing support bearing 23, the transmission box 44 can rotate around the axis of the transmission shaft 41, and the two sets of wheel assemblies 36 are installed on the transmission box 44, so when encountering a bumpy road during walking, the wheels on the two sets of wheel assemblies 36 can swing along and keep in contact with the ground.

[0035] The above description does not limit the technical scope of the present invention in any way. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An omnidirectional forklift drive assembly, comprising a housing, a rotating mechanism and a traveling mechanism; characterized in that: It also includes a movable connection component; the rotating mechanism includes a first motor, a first transmission component, a slewing support bearing and an encoder component; the slewing support bearing is installed in the housing; the first motor is fixed to one side of the housing and is connected to the slewing support bearing through the first transmission component; the encoder component is installed in the housing and connected to the slewing support bearing; the movable connection component includes a transmission shaft, a first bevel gear, two shaft seats and a transmission box; the transmission box is located at the bottom of the slewing support bearing; the two shaft seats are respectively arranged on the left and right sides of the transmission box; the transmission shaft is rotatably connected between the two shaft seats and the transmission box; The first bevel gear is mounted on the transmission shaft and is located in the transmission box; the walking mechanism includes a second motor, a second transmission assembly, a gear plate, a second bevel gear, a third bevel gear and two sets of wheel assemblies; the gear plate is rotatably mounted in the housing and is located above the slewing support bearing; the second motor is fixed to one side of the housing and is transmission-connected to the gear plate through the second transmission assembly; the second bevel gear is fixed to the bottom of the gear plate and extends into the transmission box and is rotationally connected to the first bevel gear; the two sets of wheel assemblies are rotationally connected to the front and rear sides of the transmission box respectively; the third bevel gear is mounted on one set of the wheel assemblies and is transmission-connected to the first bevel gear; The housing comprises a bottom shell and an upper shell; the upper shell is fixed on the bottom shell; the bottom shell is provided with a first mounting portion and a second mounting portion, a third mounting portion and a fourth mounting portion arranged in parallel on the left side of the first mounting portion; the slewing support bearing is mounted on the first mounting portion; the first transmission assembly and the first motor are mounted on the second mounting portion; the encoder assembly is mounted on the second mounting portion; the second transmission assembly and the second motor are mounted on the third mounting portion; A sink groove is provided above the first mounting portion; the slewing support bearing is fixed on the sink groove; the slewing support bearing comprises an outer ring and an inner ring rotatably connected to the outer ring; the inner ring protrudes above the outer ring; the inner ring has external teeth; a shaft hole is provided at the center of the inner ring; a shaft rod is provided at the bottom of the gear plate; the shaft rod is rotatably connected to the shaft hole through the bearing; the second bevel gear is fixed to the bottom of the shaft rod by screw locking; The second mounting portion includes a first mounting hole arranged vertically and a second mounting hole arranged horizontally; the second mounting hole is connected to the first mounting hole; the first transmission assembly includes a transmission rod, a fourth bevel gear and a first gear; the transmission rod is rotatably connected in the first mounting hole; the fourth bevel gear is fixed at the lower end of the transmission rod; the first gear is fixed at the upper end of the transmission rod and meshes with the outer teeth of the outer ring; the first motor is fixed in the second mounting hole; the power output end of the first motor is provided with a fifth bevel gear; the fifth bevel gear meshes with the fourth bevel gear; the structure of the fourth mounting portion is the same as that of the second mounting portion; the structure of the second transmission assembly is the same as that of the first transmission assembly; the first gear on the second transmission assembly meshes with the gear plate.

2. The omnidirectional forklift drive assembly according to claim 1, characterized in that: The third mounting portion includes a third mounting hole and a fourth mounting hole which are distributed on the left and right and vertically arranged; the encoder assembly includes an encoder, a second gear and a third gear; the encoder is fixed in the third mounting hole; the second gear is installed above the encoder; the third gear is rotatably connected to the fourth mounting hole and is respectively meshed with the second gear and the outer teeth of the inner ring.

3. The omnidirectional forklift drive assembly according to claim 1, characterized in that: The inner ring is provided with avoidance holes at positions corresponding to the positions of the two sets of wheel assemblies.

4. The omnidirectional forklift drive assembly according to claim 1, characterized in that: A positioning round table is provided at the center position above the gear plate; a positioning hole matching with the positioning round table is provided on the upper shell; and the positioning round table is inserted into the positioning hole for positioning.

5. The omnidirectional forklift drive assembly according to claim 1, characterized in that: The upper shell is provided with two pin holes; positioning pins are inserted into the pin holes.

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