High-bearing-capacity electric differential driving wheel structure

Abstract

The utility model relates to the technical field of electric differential driving wheels, in particular to a high-bearing electric differential driving wheel structure which comprises a plurality of rubber coating wheels, a welding support is installed and connected between the rubber coating wheels, the rubber coating wheels are rotationally connected with the welding support through connecting bearings, and the rubber coating wheels are connected with the welding support through the connecting bearings. A driven gear is arranged at the joint of the rubber coating wheel and the welding support and connected with the outer wall of the connecting bearing in a sleeving mode, a hinge seat is connected to the top end of the welding support and penetrates into the welding support, and hinge shafts are fixedly connected to the two ends of the welding support and penetrate into the hinge seat through the welding support. The bearing performance of the welding support and the bearing plate can be improved through mutual matching installation of the structure of the welding support, the hinge shaft and the supporting bearing, and the reduction gearbox and the motor are installed and fixed at the two ends of the welding support, so that the reduction gearbox and the motor are not located at the bearing portion of the welding support. And the reduction gearbox is prevented from being influenced by deformation of the welding bracket due to pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of electric differential drive wheels, in particular to a high-load electric differential drive wheel structure. Background Art

[0002] An AGV, or automated guided vehicle, commonly known as an "unmanned guided vehicle," is a heavy-duty transport vehicle equipped with automated guidance devices, such as electromagnetic or optical ones, capable of traveling along a pre-set path. It features safety features and various transfer functions. AGVs are widely used in industrial transportation because they rely on batteries for power and do not require a driver. They are particularly effective automated transport tools for logistics in flexible manufacturing and automated warehousing systems. Some AGVs require drive wheels for multi-directional travel and braking. With the continued development of AGVs, increasing demands are being placed on these drive wheels.

[0003] The bottom of the AGV is generally driven by an electric differential drive wheel, and the working principle of the electric differential drive wheel is to achieve straight-line and turning of the electric differential drive wheel by adjusting the speed difference between the two motors. However, the reducer in the existing electric differential drive wheel is generally fixed on a support plate, and the support plate generally bears the weight of the AGV. The reducer is required to have a certain load-bearing capacity, and when the electric differential drive wheel rotates, it is subjected to a certain torque and slightly deformed, causing the gears and bearings inside the reducer fixed on the support plate to have a certain amount of deformation, thereby changing the gear meshing clearance inside the reducer, which affects the torque output performance of the reducer. With the continuous development of industry, the size of the AGV will continue to increase. Therefore, multiple electric differential drive wheels are needed to meet the driving needs of larger AGVs, which greatly increases the cost of the AGV and reduces the control performance of the AGV.

[0004] Therefore, it is necessary to propose a high-load electric differential drive wheel structure to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a high-load electric differential drive wheel structure, which can improve the load-bearing performance of the welding bracket and the support plate by cooperating and installing the welding bracket itself structure with the articulated shaft and the support bearing. By installing and fixing the reduction box and the motor at both ends of the welding bracket, the reduction box and the motor can be removed from the load-bearing part of the welding bracket, thereby avoiding the deformation of the welding bracket due to pressure affecting the reduction box, so as to solve the problem in the prior art that when the electric differential drive wheel rotates, the gears and bearings inside the reduction box fixed on the support plate produce a certain amount of deformation, thereby changing the gear meshing clearance inside the reduction box, which affects the torque output performance of the reduction box. Moreover, with the continuous development of industry, the size of the AGV cart will continue to increase. Therefore, multiple electric differential drive wheels are needed to meet the driving needs of larger AGV carts, which greatly increases the cost of the AGV cart and reduces the control performance of the AGV cart.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a high-load electric differential drive wheel structure, including a rubber-coated wheel, wherein there are multiple rubber-coated wheels, and welding brackets are installed and connected between the multiple rubber-coated wheels. The rubber-coated wheels are rotatably connected to the welding brackets through connecting bearings, and a driven gear is provided at the connection between the rubber-coated wheels and the welding brackets, and is sleeved with the outer wall of the connecting bearings.

[0007] Preferably, the top of the welding bracket is provided with a hinge seat connected thereto and passes through the interior of the welding bracket, and hinge shafts are connected and fixed to both ends of the welding bracket and pass through the welding bracket to the interior of the hinge seat, and a support bearing is fixed to the outer wall of the hinge shaft that passes through the welding bracket and the interior of the hinge seat, and a support plate is installed and fixed to the top of the hinge seat.

[0008] Preferably, one end of the driven gear is rotatably connected to the driving gear and is located on one side of the welding bracket, the driving gear is connected and fixed to a reduction gear on the side away from the connecting bearing, the reduction gear is connected and fixed to a motor on the side away from the driving gear, one end of the support plate is connected and fixed to an angle sensor, the top end of the angle sensor is rotatably connected to a transmission gear, the top end of the support plate is connected and fixed to a slewing bearing, and is meshed with the transmission gear.

[0009] Preferably, mounting grooves matching the hinge shaft are provided at both ends of the welding bracket, and support grooves matching the support bearings are provided inside both ends of the welding bracket and the hinge seat.

[0010] Preferably, the welded bracket is formed by welding four steel plates and a seamless steel pipe, and the four steel plates and the seamless steel pipe are easy to select according to usage.

[0011] Preferably, the driving gear and the driven gear are engaged with each other through teeth and grooves, both ends of the welding bracket are provided with installation spaces matching the reduction box, and the transmission gear and the slewing bearing are engaged with each other through teeth and grooves.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] 1. After multiple rubber-coated wheels touch the ground, the rubber-coated wheels will transfer the pressure to the connecting bearings when they are under pressure, and transfer the pressure to the welding bracket through the connecting bearings, and transfer the pressure to the hinge shaft through the steel plate or steel pipe in the welding bracket, and make the hinge shaft transfer the pressure to the hinge seat through the support bearing, and transfer the pressure to the support plate through the hinge seat, and finally transfer the pressure to the AGV trolley. The welding bracket is welded by four steel plates and a seamless steel pipe, which makes it easy for the welding bracket to adapt to seamless steel pipes of different sizes according to different loads, and to select steel plates of different thicknesses according to different loads, so that the welding bracket has strong adaptability and can provide a larger load-bearing capacity, so that the electric differential drive wheel can meet the support and driving performance of large-sized AGV trolleys, thereby reducing the number of electric differential drive wheels required by the AGV trolley;

[0014] 2. The reduction gear box and the motor are fixed at both ends of the welding bracket so that the reduction gear box and the motor are not in the load-bearing part of the welding bracket, so as to avoid the deformation of the welding bracket due to pressure affecting the gears and parts inside the reduction gear box. At the same time, the reduction gear box is installed on both sides of the welding bracket, so that when the motor drives the driving gear to rotate through the reduction gear box, the driving gear drives the driven gear to rotate, and the driven gear drives the rubber-coated wheel to rotate, so that when the two rubber-coated wheels rotate in opposite directions, the welding bracket is driven by the slewing bearing to rotate through the top support plate, and the slewing bearing rotates to drive the transmission gear. The rotation of the transmission gear makes it easier for the angle sensor at the bottom to monitor the rotation angle of the electric differential drive wheel in real time. By not exerting force on the reduction gear box and the welding bracket, the service life of the reduction gear box can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the top structure of the utility model;

[0018] Figure 3 It is a cross-sectional structural diagram of a side view structural diagram of the present utility model;

[0019] Figure 4 This is a schematic cross-sectional view of the welding bracket of the present invention;

[0020] Figure 5 This is a cross-sectional schematic diagram of the connection structure between the hinge shaft and the welding bracket of the present invention;

[0021] Figure 6 It is a schematic diagram of the overall explosion structure of the utility model.

[0022] Description of reference numerals:

[0023] 1. Rubber-coated wheel; 2. Connecting bearing; 3. Driven gear; 4. Welding bracket; 5. Articulated shaft; 6. Support bearing; 7. Articulated seat; 8. Support plate; 9. Driving gear; 10. Reducer; 11. Motor; 12. Angle sensor; 13. Transmission gear; 14. Slewing bearing. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] The utility model provides Figure 1-6 A high-load electric differential drive wheel structure shown includes a rubber-coated wheel 1. There are multiple rubber-coated wheels 1, and a welding bracket 4 is installed and connected between the multiple rubber-coated wheels 1. The rubber-coated wheel 1 is rotatably connected to the welding bracket 4 through a connecting bearing 2. A driven gear 3 is provided at the connection between the rubber-coated wheel 1 and the welding bracket 4, and is sleeved with the outer wall of the connecting bearing 2. Through the structure of the welding bracket 4 itself, the load-bearing performance of the welding bracket 4 itself can be improved.

[0026] Refer to the instruction manual Figure 1-6 The top of the welding bracket 4 is provided with a hinge seat 7, which passes through the interior of the welding bracket 4. The two ends of the welding bracket 4 are connected and fixed with hinge shafts 5, which pass through the welding bracket 4 to the interior of the hinge seat 7. The hinge shaft 5 passes through the welding bracket 4 and the outer wall of the hinge seat 7 is sleeved and fixed with a support bearing 6. The top of the hinge seat 7 is fixed with a support plate 8. By coordinating the structure of the welding bracket 4 itself with the hinge shaft 5 and the support bearing 6, the load-bearing performance of the welding bracket 4 and the support plate 8 can be improved.

[0027] Refer to the instruction manual Figure 1-6One end of the driven gear 3 is rotatably connected to the driving gear 9 and is located on one side of the welding bracket 4. The driving gear 9 is connected and fixed with a reduction gear 10 on the side away from the connecting bearing 2. The reduction gear 10 is connected and fixed with a motor 11 on the side away from the driving gear 9. One end of the support plate 8 is connected and fixed with an angle sensor 12. The top of the angle sensor 12 is rotatably connected to the transmission gear 13. The top of the support plate 8 is connected and fixed with a slewing bearing 14, and is engaged with the transmission gear 13. By installing and fixing the reduction gear 10 and the motor 11 at both ends of the welding bracket 4, the reduction gear 10 and the motor 11 can be removed from the load-bearing part of the welding bracket 4, thereby preventing the welding bracket 4 from being deformed due to pressure and affecting the reduction gear 10.

[0028] Refer to the instruction manual Figure 1-6 , mounting grooves matching the hinge shaft 5 are opened at both ends of the welding bracket 4, and support grooves matching the support bearing 6 are opened inside the two ends of the welding bracket 4 and the hinge seat 7. By opening support grooves matching the support bearing 6 inside the two ends of the welding bracket 4 and the hinge seat 7, the support bearing 6 is conveniently installed between the welding bracket 4 and the hinge seat 7.

[0029] Refer to the instruction manual Figure 1-6 The welding bracket 4 is welded by four steel plates and a seamless steel pipe, and the four steel plates and the seamless steel pipe are easy to select according to the usage. The welding bracket 4 is welded by four steel plates and a seamless steel pipe, and the four steel plates and the seamless steel pipe are easy to select according to the usage. The welding bracket 4 can adapt to seamless steel pipes of different sizes according to different loads, and can also select steel plates of different thicknesses according to different loads.

[0030] Refer to the instruction manual Figure 1-6 The driving gear 9 and the driven gear 3 are meshed with each other through the teeth. Both ends of the welding bracket 4 are provided with installation spaces matching the reduction box 10. The transmission gear 13 and the slewing bearing 14 are meshed with each other through the teeth. The driving gear 9 and the driven gear 3 are meshed with each other through the teeth, so that the driving gear 9 rotates to drive the driven gear 3 to rotate.

[0031] This utility works as follows:

[0032] Refer to the instruction manual Figure 1-6After multiple rubber-coated wheels 1 touch the ground, the rubber-coated wheels 1 will transmit the pressure to the connecting bearing 2 when they are under pressure, and transmit the pressure to the welding bracket 4 through the connecting bearing 2, and transmit the pressure to the welding bracket 4 through the steel plate or steel pipe in the welding bracket 4, and the hinge shaft 5 transmits the pressure to the hinge seat 7 through the support bearing 6, and transmits the pressure to the support plate 8 through the hinge seat 7, and finally transmits the pressure to the AGV trolley. The welding bracket 4 is welded by four steel plates and a seamless steel pipe, which is convenient for the welding bracket 4 to adapt to seamless steel pipes of different sizes according to different loads, and to select steel plates of different thicknesses according to different loads, so that the welding bracket 4 has strong adaptability and can provide a larger load-bearing capacity, so that the electric differential drive wheel meets the support and driving performance of large-sized AGV trolleys, thereby reducing the number of electric differential drive wheels required by the AGV trolley;

[0033] Refer to the instruction manual Figure 1-6 , the reduction box 10 and the motor 11 are installed and fixed at both ends of the welding bracket 4, so that the reduction box 10 and the motor 11 are not in the load-bearing part of the welding bracket 4, avoiding the deformation of the welding bracket 4 due to pressure affecting the gears and parts inside the reduction box 10. At the same time, the reduction box 10 is installed on both sides of the welding bracket 4, so that when the motor 11 drives the driving gear 9 to rotate through the reduction box 10, the driving gear 9 drives the driven gear 3 to rotate, and the driven gear 3 rotates to drive the rubber-coated wheel 1 to rotate, so that when the two rubber-coated wheels 1 rotate in opposite directions, the welding bracket 4 is driven to rotate, so that the welding bracket 4 drives the slewing support 14 to rotate through the top support plate 8, and the slewing support 14 rotates to drive the transmission gear 13 to rotate. The rotation of the transmission gear 13 facilitates the angle sensor 12 at the bottom to monitor the rotation angle of the electric differential drive wheel in real time. By not subjecting the reduction box 10 and the welding bracket 4 to mutual force, the service life of the reduction box 10 can be improved.

[0034] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-load electric differential drive wheel structure, comprising a rubber-coated wheel (1), characterized in that: There are a plurality of rubber-coated wheels (1), and a welding bracket (4) is installed and connected between the plurality of rubber-coated wheels (1). The rubber-coated wheels (1) are rotatably connected to the welding bracket (4) via a connecting bearing (2). A driven gear (3) is provided at the connection between the rubber-coated wheels (1) and the welding bracket (4), and is sleeved with the outer wall of the connecting bearing (2).

2. The high-load electric differential drive wheel structure according to claim 1, characterized in that: The top end of the welding bracket (4) is provided with a hinge seat (7) connected thereto and passing through the interior of the welding bracket (4); both ends of the welding bracket (4) are connected and fixed with hinge shafts (5) passing through the welding bracket (4) to the interior of the hinge seat (7); the hinge shaft (5) passing through the welding bracket (4) and the outer wall of the hinge seat (7) is sleeved and fixed with a support bearing (6); the top end of the hinge seat (7) is fixed with a support plate (8).

3. The high-load electric differential drive wheel structure according to claim 2, characterized in that: One end of the driven gear (3) is rotatably connected to a driving gear (9) and is located on one side of the welding bracket (4); a side of the driving gear (9) away from the connecting bearing (2) is connected and fixed to a reduction gear box (10); a side of the reduction gear box (10) away from the driving gear (9) is connected and fixed to a motor (11); one end of the support plate (8) is connected and fixed to an angle sensor (12); the top end of the angle sensor (12) is rotatably connected to a transmission gear (13); the top end of the support plate (8) is connected and fixed to a slewing bearing (14) and meshes with the transmission gear (13).

4. The high-load electric differential drive wheel structure according to claim 2, characterized in that: Mounting grooves matching the hinge shaft (5) are provided at both ends of the welding bracket (4), and support grooves matching the support bearing (6) are provided inside both ends of the welding bracket (4) and the hinge seat (7).

5. The high-load electric differential drive wheel structure according to claim 2, characterized in that: The welding bracket (4) is formed by welding four steel plates and a seamless steel pipe, and the four steel plates and the seamless steel pipe are easy to select according to usage conditions.

6. The high-load electric differential drive wheel structure according to claim 3, characterized in that: The driving gear (9) and the driven gear (3) are meshed with each other through tooth grooves, and installation spaces matching the reduction box (10) are provided at both ends of the welding bracket (4), and the transmission gear (13) and the slewing bearing (14) are meshed with each other through tooth grooves.

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