All-electric pallet truck based on permanent magnet synchronization

Abstract

The all-electric pallet truck comprises a truck body, a standing platform located at the bottom of the rear side of the truck body, an operating handle located at the top of the truck body and a pallet fork located at the bottom of the front side of the truck body, balance wheels are arranged on the two sides of the bottom of the truck body respectively, and a driving assembly is arranged between the two balance wheels; the driving assembly is arranged at the bottom of the truck body, an output shaft of a permanent magnet synchronous motor of the driving assembly is connected with a first bevel gear, meshing of the first bevel gear and a second bevel gear is transmitted to a bevel gear shaft, rotation of the bevel gear shaft is transmitted to a rotating wheel through a sector gear and a rotating shaft flange, and finally the rotating wheel is driven to move the truck. When steering is needed, an output shaft of a steering motor of the driving assembly is connected with a second spur gear, the second spur gear is connected with a first spur gear in a meshed mode, due to the fact that the box body is fixedly connected with the first spur gear, when the steering motor transmits power, the box body and the rotating wheel are made to rotate in the vertical reverse direction, and therefore the carrying vehicle is made to steer.

Description

Technical Field

[0001] The invention relates to the technical field of transport vehicles, and in particular to a full-electric pallet transport vehicle based on permanent magnet synchronization. Background Art

[0002] Pallet trucks, also known as electric pallet trucks or electric transport trucks, are suitable for heavy-load and long-term cargo transfer conditions, which can greatly improve cargo handling efficiency and reduce labor intensity. Electric pallet trucks are a type of light and small storage industrial vehicle that is widely used at home and abroad and has huge market potential. It is powered by batteries, driven by DC motors, hoisted by hydraulic workstations, centrally controlled by joysticks, and driven in a standing position. Electric pallet trucks are easy, stable, and fast to operate; they are compact and flexible to operate; they are low-noise and low-pollution, and can be used in shopping malls, supermarkets, warehouses, cargo yards, workshops, and other places. They are especially suitable for use in light industries such as food, textiles, and printing.

[0003] In the prior art, for example, the patent with publication number CN216272959U discloses a steering device for an electric pallet truck, including a long-axis column and a driving mechanism for driving the long-axis column to rotate, the driving mechanism including a driving motor, a driving wheel and a driving frame, the driving wheel being connected to the output shaft of the driving motor through a gear transmission mechanism; one end of the long-axis column is fixedly arranged on the top of the driving frame, and the other end is connected to a handle bar. The steering device connects the handle to the driving mechanism through the long-axis column, one end of the long-axis column is fixedly connected to the driving frame, and the other end is connected to a handle bar for supporting the handle, and then the steering of the truck is achieved by rotating the handle; however, the operator of the above patent drives the driving wheel to steer through the handle bar, which requires a large operating force when driving at high speed or under heavy load, increasing the labor intensity of the operator.

[0004] Based on the above situation, the present invention proposes a fully electric pallet truck based on permanent magnet synchronization, which can effectively solve the above problems. Summary of the invention

[0005] The present invention aims to solve the technical problems existing in the prior art and provides a full-electric pallet stacker based on permanent magnet synchronization.

[0006] The present invention is achieved through the following technical solutions:

[0007] A fully electric pallet truck based on permanent magnet synchronization, comprising a body, a standing platform located at the bottom of the rear side of the body, an operating handle located at the top of the body, and a fork located at the bottom of the front side of the body, balance wheels are respectively arranged on both sides of the bottom of the body, a drive assembly is arranged between the two balance wheels, the drive assembly comprises a box body, a first spur gear is fixedly connected to the top of the box body, the first spur gear is fixedly connected to the output shaft of the permanent magnet synchronous motor, the permanent magnet synchronous motor is fixedly connected to a support seat, the support seat is fixedly connected to the body; a steering motor is fixedly connected to one side of the support seat; The output shaft of the steering motor is fixedly connected with a second spur gear, and the second spur gear is meshed with the first spur gear; the bottom of the output shaft of the permanent magnet synchronous motor is fixedly connected with a first helical gear, and the first helical gear is meshed with the second helical gear, and the second helical gear is fixedly connected to the outside of the helical gear shaft, the top end of the helical gear shaft is rotatably connected with the first spur gear, the bottom end of the helical gear shaft is meshed with the fan teeth, and the fan teeth are fixedly connected to one end of the rotating shaft flange, the rotating shaft flange is fixedly connected to the rotating wheel, the rotating wheel is arranged on one side of the box body, and the other side of the box body is fixedly connected with the box body cover.

[0008] According to the above technical solution, as a further preferred technical solution of the above technical solution, a lifting mechanism for lifting or lowering the fork is arranged inside the vehicle body; the lifting mechanism includes a cylinder and a connecting piece arranged on the cylinder piston rod, and the bottom of the connecting piece is connected to the fork; the cylinder is fixed on the vehicle body.

[0009] According to the above technical solution, as a further preferred technical solution of the above technical solution, a control area is provided on one side of the operating handle, and the control area is provided with a key knob, a stop button and an instrument panel.

[0010] According to the above technical solution, as a further preferred technical solution of the above technical solution, a battery is installed inside the vehicle body.

[0011] According to the above technical solution, as a further preferred technical solution of the above technical solution, guardrails are respectively arranged on both sides of the top of the vehicle body, and the guardrails are connected to the vehicle body.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0013] The present invention provides a fully electric pallet truck based on permanent magnet synchronization. A driving assembly is arranged at the bottom of the vehicle body. The output shaft of the permanent magnet synchronous motor of the driving assembly is connected to the first bevel gear. The meshing of the first bevel gear and the second bevel gear is transmitted to the bevel gear shaft. The rotation of the bevel gear shaft is transmitted to the rotating wheel through the fan gear and the shaft flange, and finally the rotating wheel is driven to move the truck. When steering is required, the output shaft of the steering motor of the driving assembly is connected to the second spur gear, and the second spur gear is meshed with the first spur gear. Since the box body is fixedly connected to the first spur gear, when the steering motor transmits power, the box body and the rotating wheel rotate in the vertical reverse direction, so that the truck is turned. Compared with the prior art method of driving the driving wheel to turn by a handle rod, the setting of the driving assembly of the present invention makes the truck turn more smoothly and can effectively enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle;

[0016] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0017] Figure 4 It is a schematic diagram of the structure of the drive assembly of the present invention;

[0018] Figure 5 It is a schematic diagram of the internal structure of the drive assembly of the present invention;

[0019] Figure 6 for Figure 1 A partial enlarged schematic diagram of part A. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for exemplary description and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only for exemplary description and cannot be understood as a limitation on this patent.

[0021] A fully electric pallet truck based on permanent magnet synchronization, comprising a body 1, a standing platform 2 located at the bottom of the rear side of the body 1, an operating handle 3 located at the top of the body 1, and a fork 4 located at the bottom of the front side of the body 1, balance wheels 5 are respectively arranged on both sides of the bottom of the body 1, a drive assembly 6 is arranged between the two balance wheels 5, the drive assembly 6 comprises a box 61, a first spur gear 62 is fixedly connected to the top of the box 61, the first spur gear 62 is fixedly connected to the output shaft of a permanent magnet synchronous motor 63, the permanent magnet synchronous motor 63 is fixedly connected to a support seat 64, and the support seat 64 is fixedly connected to the body 1; a steering motor 65 is fixedly connected to one side of the support seat 64; the steering motor 65 The output shaft is fixedly connected with a second spur gear 66, which is meshed with the first spur gear 62; the bottom of the output shaft of the permanent magnet synchronous motor 63 is fixedly connected with a first bevel gear 67, which is meshed with a second bevel gear 68, and the second bevel gear 68 is fixedly connected to the outer side of the bevel gear shaft 69, the top of the bevel gear shaft 69 is rotatably connected to the first spur gear 62, the bottom end of the bevel gear shaft 69 is meshed with the fan gear 610, and the fan gear 610 is fixedly connected to one end of the rotating shaft flange 611, and the rotating shaft flange 611 is fixedly connected to the rotating wheel 612, and the rotating wheel 612 is arranged on one side of the box body 61, and the other side of the box body 61 is fixedly connected with a box cover 613.

[0022] The present invention sets a driving assembly 6 at the bottom of the vehicle body 1, and the output shaft of the permanent magnet synchronous motor 63 of the driving assembly 6 is connected to the first bevel gear 67, and the meshing of the first bevel gear 67 and the second bevel gear 68 is transmitted to the bevel gear shaft 69, and the rotation of the bevel gear shaft 69 is transmitted to the rotating wheel 612 through the fan teeth 610 and the rotating shaft flange 611, and finally drives the rotating wheel 612 to move the transport vehicle; when steering is required, the output shaft of the steering motor 65 of the driving assembly 6 is connected to the second spur gear 66, and the second spur gear 66 is meshed and connected with the first spur gear 62. Since the box body 61 is fixedly connected to the first spur gear 62, when the steering motor 65 transmits power, the box body 1 and the rotating wheel 612 can rotate in the vertical direction, so that the transport vehicle can be turned; compared with the prior art method of driving the driving wheel to turn by a handle rod, the setting of the driving assembly of the present invention makes the transport vehicle turn more smoothly, which can effectively enhance the user experience.

[0023] At the same time, the drive assembly 6 adopts a permanent magnet synchronous motor 63. The design of the forced magnetic field inside the permanent magnet synchronous motor 63 reduces the resistance inside the motor, thereby reducing energy loss. It can also maintain high efficiency in the low voltage and low frequency range, and has a faster adjustment of output power, ensuring that the system is more efficient and accurate. In addition, the permanent magnet synchronous motor 63 has an encoder and adopts a non-contact installation structure, which has high control accuracy.

[0024] Furthermore, in another embodiment, a lifting mechanism for lifting or lowering the fork 4 is provided inside the vehicle body 1; the lifting mechanism includes a cylinder 7 and a connecting member 8 provided on the piston rod of the cylinder 7, and the bottom of the connecting member 8 is connected to the fork 4; the cylinder 7 is fixed on the vehicle body 1.

[0025] By providing a lifting mechanism, under the action of the oil cylinder 7 and the connecting member 8, the fork 4 of the transport vehicle can lift the goods to a certain height from the ground, thereby facilitating the transportation of the goods.

[0026] Furthermore, in another embodiment, a control area 9 is provided on one side of the operating handle 3 , and the control area 9 is provided with a key knob 10 , a stop button 11 and a dashboard.

[0027] By setting up the control area 9, the key knob 10, the stop button 11 and the instrument panel 12 are integrated, so that the operator can easily control the basic functions of the transporter, and monitor and display the power, driving speed, fault code, etc. in real time to ensure the continuity of the operation.

[0028] Furthermore, in another embodiment, a battery 13 is installed inside the vehicle body 1 .

[0029] By arranging a battery inside the vehicle body 1, a power source is provided for the operation of the transport vehicle.

[0030] Furthermore, in another embodiment, guardrails 14 are respectively provided on both sides of the top of the vehicle body 1 , and the guardrails 14 are connected to the vehicle body 1 .

[0031] The guardrails 14 provided on both sides of the top of the vehicle body 1 increase the safety of the operator on the standing platform 2 and prevent accidental falling during operation.

[0032] According to the description and drawings of the present invention, those skilled in the art can easily manufacture or use the full-electric pallet truck based on permanent magnet synchronization of the present invention, and can produce the positive effects recorded in the present invention.

[0033] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0034] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A fully electric pallet truck based on permanent magnet synchronization, comprising a body (1), a standing platform (2) located at the bottom of the rear side of the body (1), an operating handle (3) located at the top of the body (1), and a fork (4) located at the bottom of the front side of the body (1), Features: Balance wheels (5) are respectively arranged on both sides of the bottom of the vehicle body (1); a drive assembly (6) is arranged between the two balance wheels (5); the drive assembly (6) comprises a box body (61); a first spur gear (62) is fixedly connected to the top of the box body (61); the first spur gear (62) is fixedly connected to the output shaft of a permanent magnet synchronous motor (63); the permanent magnet synchronous motor (63) is fixedly connected to a support seat (64); the support seat (64) is fixedly connected to the vehicle body (1); a steering motor (65) is fixedly connected to one side of the support seat (64); the output shaft of the steering motor (65) is fixedly connected to a second spur gear (66); the second spur gear (66) is connected to the first spur gear (62); ) are meshedly connected; a first bevel gear (67) is fixedly connected to the bottom of the output shaft of the permanent magnet synchronous motor (63); the first bevel gear (67) is meshedly connected to the second bevel gear (68); the second bevel gear (68) is fixedly connected to the outer side of the bevel gear shaft (69); the top end of the bevel gear shaft (69) is rotatably connected to the first straight gear (62); the bottom end of the bevel gear shaft (69) is meshedly connected to the fan gear (610); the fan gear (610) is fixedly connected to one end of the rotating shaft flange (611); the rotating shaft flange (611) is fixedly connected to the rotating wheel (612); the rotating wheel (612) is arranged on one side of the box body (61); and the other side of the box body (61) is fixedly connected to the box body cover (613).

2. A fully electric pallet truck based on permanent magnet synchronization according to claim 1, Features: A lifting mechanism for lifting or lowering a cargo fork (4) is arranged inside the vehicle body (1); the lifting mechanism comprises an oil cylinder (7) and a connecting member (8) arranged on a piston rod of the oil cylinder (7), the bottom of the connecting member (8) being connected to the cargo fork (4); the oil cylinder (7) is fixed on the vehicle body (1).

3. The all-electric pallet truck based on permanent magnet synchronization according to claim 1, Features: A control area (9) is provided on one side of the operating handle (3), and the control area (9) is provided with a key knob (10), a stop button (11) and a dashboard (12).

4. The all-electric pallet truck based on permanent magnet synchronization according to claim 1, Features: A storage battery (13) is installed inside the vehicle body (1).

5. The all-electric pallet truck based on permanent magnet synchronization according to claim 1, Features: Guardrails (14) are respectively arranged on both sides of the top of the vehicle body (1), and the guardrails (14) are connected to the vehicle body (1).

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