Electric forklift

Abstract

The utility model provides an electric forklift and belongs to the technical field of electric forklifts. The electric forklift comprises a frame, a handle, a lifting mechanism, a fork frame, a moving mechanism, a power supply mechanism, a power assisting mechanism and a locking mechanism, the frame comprises a base and a pair of shaft seats, the shaft seats are installed on one side of a support, the handle is rotatably installed on the top of the base, and the moving mechanism comprises a pair of universal wheels and a pair of directional wheels. The pair of directional wheels are installed in the pair of shaft seats through rotating shafts, a connecting shaft is connected between the pair of universal wheels, the connecting shaft is connected with the bottom of the handle, the power assisting mechanism comprises a pair of shaft bodies, a differential mechanism and a torque motor, and the output end of the torque motor is in transmission connection with the input end of the differential mechanism; the output ends of the two ends of the differential mechanism are in transmission connection with the pair of shaft bodies, the free ends of the shaft bodies are connected with the directional wheels, power is provided for the forklift in the uphill process through the use of the power assisting mechanism, resistance is provided for the forklift in the downhill process, and therefore the labor-saving effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric forklifts, in particular to an electric forklift. Background Art

[0002] An electric forklift is a forklift that uses electricity to operate. Most of them are powered by batteries. Electric forklifts use batteries as their power source to drive the travel motor and the hydraulic system motor, thereby achieving travel and loading and unloading operations.

[0003] During port handling, electric forklifts are needed to move goods. However, due to the small space between some containers or in warehouses, it is not suitable to use electric forklifts with driving functions. Therefore, human-powered electric forklifts are suitable for use in such environments.

[0004] However, most existing human-powered electric forklifts do not have a power-assist function. When a user pushes a forklift carrying heavy goods, the user needs to expend more physical strength to push the forklift, especially when going uphill. When going downhill, the user needs to expend even more strength to pull the forklift to prevent the forklift from sliding down the slope quickly. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides an electric forklift.

[0006] The utility model is achieved in this way:

[0007] An electric forklift comprises a frame, a handle, a lifting mechanism, a fork frame, a moving mechanism, a power supply mechanism, a power assist mechanism, and a locking mechanism. The frame comprises a base, a pair of axle seats, a pair of the axle seats being mounted on one side of the bracket, and the handle being rotatably mounted on the top of the base. The moving mechanism comprises a pair of universal wheels and a pair of fixed wheels, a pair of the fixed wheels being mounted inside a pair of axle seats via a rotating shaft, a connecting shaft being connected between the pair of universal wheels, and the connecting shaft being connected to the bottom of the handle. The power assist mechanism comprises a pair of shaft bodies, a differential, and a torque motor, the output end of the torque motor being transmission-connected to the input end of the differential, the output ends at both ends of the differential being transmission-connected to a pair of shaft bodies, and the free end of the shaft body being connected to the fixed wheel.

[0008] The beneficial effect of adopting the above-mentioned further scheme is that the angle of the universal wheel is changed by the vertical rotation of the handle, the steering direction of the forklift is changed by the change of the universal wheel angle, the fixed wheel is used to keep the forklift in linear motion, the torque motor is used to deliver the rated torque so that the fixed wheel can rotate autonomously, thereby providing assistance to the user in pushing the forklift, and the torque motor is used to deliver the rated reverse torque so that the fixed wheel can rotate autonomously, thereby providing resistance to the user in pushing the forklift, so that the forklift can be provided with power when going uphill and can be provided with resistance when going downhill, thereby achieving a labor-saving effect.

[0009] Furthermore, the outer side of the connecting shaft is rotatably connected to a connecting seat, and the connecting seat is connected to the bottom of the handle. The locking mechanism includes a pressure block, a clamping rod, a fixed seat, a pin shaft, a pair of slide grooves, and a pair of snap rings. The fixed seat is installed on one side of the connecting seat, and the pair of slide grooves are located on both sides of the connecting seat. The pin shaft is installed inside the fixed seat, and the pressure block is installed on the outer side of the pin shaft. The two ends of the clamping rod slide in a pair of slide grooves, one side of the pressure block squeezes the clamping rod, and a pair of snap rings are installed on the side of the universal wheel close to each other, and the clamping rod and the snap ring are engaged.

[0010] Furthermore, a hook-shaped protrusion is installed on the top of one side of the pressure block, and an arc-shaped protrusion is installed on the bottom of one side of the pressure block. The hook-shaped protrusion pulls the card rod, and the arc-shaped protrusion squeezes the card rod. The inner wall of the clamping ring has a plurality of card grooves, and the card rod slides in the card grooves.

[0011] Furthermore, a mounting cavity is provided on each side of the pair of universal wheels that are close to each other, and the clamping ring is installed in the mounting cavity.

[0012] The beneficial effect of adopting the above further scheme is that, by pressing the pressure block downward, the arc-shaped protrusion can squeeze the card rod, so that the card rod is out of the slot. At this time, the universal wheel can rotate. By lifting the pressure block upward, the hook-shaped protrusion can hook the card rod and move it, so that the card rod slides into the slot. At this time, the universal wheel cannot rotate, thereby locking the forklift to facilitate loading and unloading for users.

[0013] Furthermore, the power supply mechanism includes a power supply box, and a battery is installed in the power supply box. A charging interface is provided on the outside of the power supply box. A control panel is installed on the armrest of the handle. The control panel is electrically connected to the torque motor and the lifting mechanism. The battery supplies power to the control panel, and the power supply mechanism is installed on the top of the base.

[0014] Furthermore, the pair of universal wheels and the pair of fixed wheels have the same specifications.

[0015] Furthermore, the frame also includes a bracket, and the bracket is installed on the top of the base, the fork frame slides on one side of the bracket, the lifting mechanism is installed inside the bracket, and the output end of the lifting mechanism is connected to the fork frame.

[0016] The beneficial effect of adopting the above further solution is that the lifting mechanism is used to drive the fork frame to rise and fall, thereby transporting the goods.

[0017] The beneficial effects of the present invention are as follows: the electric forklift obtained by the present invention through the above design utilizes the vertical rotation of the handle to change the angle of the universal wheel, utilizes the change of the universal wheel angle to change the steering of the forklift, utilizes the fixed wheel to make the forklift maintain linear motion, utilizes the torque motor to deliver the rated torque, so that the fixed wheel can rotate independently, thereby providing assistance for the user to push the forklift, utilizes the torque motor to deliver the rated reverse torque, so that the fixed wheel can rotate independently, thereby providing resistance for the user to push the forklift, thus providing power for the forklift when going uphill and providing resistance for the forklift when going downhill, thereby achieving the effect of saving labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the three-dimensional structure of an electric forklift provided by the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of an electric forklift provided by the utility model when viewed from above;

[0021] Figure 3 A schematic diagram of the explosion structure of an electric forklift provided by the utility model;

[0022] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of structure A in the middle.

[0023] In the figure: 100, frame; 1001, base; 1002, bracket; 1003, axle seat; 200, handle; 300, lifting mechanism; 400, fork frame; 500, moving mechanism; 5001, universal wheel; 5002, fixed wheel; 5003, connecting seat; 5004, connecting shaft; 600, power supply mechanism; 700, power assist mechanism; 7001, shaft body; 7002, differential; 7003, torque motor; 800, locking mechanism; 8001, pressure block; 8002, clamping rod; 8003, fixing seat; 8004, pin shaft; 8005, slide groove; 8006, snap ring. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] Embodiment 1 of the utility model of an electric forklift

[0027] The utility model provides the following technical solutions: Figure 1 - Figure 4, including a frame 100, a handle 200, a lifting mechanism 300, a fork frame 400, a moving mechanism 500, a power supply mechanism 600, a power-assisting mechanism 700, and a locking mechanism 800. The frame 100 includes a base 1001, a pair of shaft seats 1003, a pair of shaft seats 1003 are installed on one side of the bracket 1002, and the handle 200 is rotatably installed on the top of the base 1001. The moving mechanism 500 includes a pair of universal wheels 5001 and a pair of fixed wheels 5002. The pair of fixed wheels 5002 are installed inside the pair of shaft seats 1003 through a rotating shaft. A connecting shaft 5004 is connected between the pair of universal wheels 5001, and the connecting shaft 5004 is connected to the bottom of the handle 200. The power-assisting mechanism 700 includes a pair of shaft bodies 7001, a differential 7002, and a torque motor 7003. The output end of the torque motor 7003 and the differential The input end of 7002 is transmission connected, the output ends at both ends of the differential 7002 are transmission connected to a pair of shafts 7001, and the free end of the shaft 7001 is connected to the fixed wheel 5002. The handle 200 is rotated vertically to change the angle of the universal wheel 5001, and the change in the angle of the universal wheel 5001 is used to change the steering of the forklift. The fixed wheel 5002 is used to keep the forklift in linear motion. The torque motor 7003 is used to deliver the rated torque so that the fixed wheel 5002 can rotate autonomously, thereby providing assistance for the user to push the forklift. The torque motor 7003 is used to deliver the rated reverse torque so that the fixed wheel 5002 can rotate autonomously, thereby providing resistance for the user to push the forklift. In this way, the forklift can be powered when going uphill and can be resisted when going downhill, thereby achieving a labor-saving effect.

[0028] Embodiment 2 of the utility model of an electric forklift

[0029] Reference Figure 1 - Figure 4Specifically, the outer side of the connecting shaft 5004 is rotatably connected to the connecting seat 5003, and the connecting seat 5003 is connected to the bottom of the handle 200. The locking mechanism 800 includes a pressing block 8001, a clamping rod 8002, a fixing seat 8003, a pin 8004, a pair of slide grooves 8005, and a pair of snap rings 8006. The fixing seat 8003 is installed on one side of the connecting seat 5003, the pair of slide grooves 8005 are located on both sides of the connecting seat 5003, the pin 8004 is installed inside the fixing seat 8003, the pressing block 8001 is installed on the outer side of the pin 8004, the two ends of the clamping rod 8002 slide in the pair of slide grooves 8005, one side of the pressing block 8001 squeezes the clamping rod 8002, and a pair of snap rings 8006 are installed on the side of the universal wheel 5001 close to each other. 6 is engaged, a hook-shaped protrusion is installed on the top of one side of the pressing block 8001, and an arc-shaped protrusion is installed on the bottom of one side of the pressing block 8001. The hook-shaped protrusion pulls the card rod 8002, and the arc-shaped protrusion squeezes the card rod 8002. The inner wall of the clamping ring 8006 has a plurality of clamping grooves, and the card rod 8002 slides in the clamping groove. The side of a pair of universal wheels 5001 close to each other is provided with a mounting cavity, and the clamping ring 8006 is installed in the mounting cavity. Pressing the pressing block 8001 downward can make the arc-shaped protrusion squeeze the card rod 8002, so that the card rod 8002 is out of the slot. At this time, the universal wheel 5001 can rotate. Lifting the pressing block 8001 can make the hook-shaped protrusion hook the card rod 8002 and move it, so that the card rod 8002 slides into the slot. At this time, the universal wheel 5001 cannot rotate, thereby locking the forklift to facilitate loading and unloading.

[0030] Embodiment 3 of the utility model of an electric forklift

[0031] Reference Figure 1 - Figure 4 Specifically, the frame 100 also includes a bracket 1002, and the bracket 1002 is installed on the top of the base 1001, the fork frame 400 slides on one side of the bracket 1002, the lifting mechanism 300 is installed inside the bracket 1002, and the output end of the lifting mechanism 300 is connected to the fork frame 400. The lifting mechanism 300 is used to drive the fork frame 400 to rise and fall, so as to transport goods.

[0032] Specifically, the working principle of this electric forklift is as follows: when in use, the goods are placed on the transport rack, the forklift is pushed to move to the transport rack, the fork rack 400 is controlled to move down through the control panel, and then the fork rack 400 is continued to move so that the fork rack 400 is inserted under the transport rack, and then the fork rack 400 is controlled to move up through the control panel, and finally the forklift is pushed to the cargo placement location and the transport rack with the goods is put down. In the process of moving the forklift, the handle 200 is rotated vertically to change the angle of the universal wheel 5001, and the change in the angle of the universal wheel 5001 is used to change the steering of the forklift, the directional wheel 5002 is used to keep the forklift in linear motion, the torque motor 7003 is used to deliver the rated torque so that the directional wheel 5002 can rotate autonomously, thereby providing assistance for the user to push the forklift, and the torque motor 7003 is used to deliver the rated reverse torque so that the directional wheel 5002 can rotate autonomously, thereby providing resistance for the user to push the forklift, so that the forklift can be provided with power when going uphill and can provide resistance when going downhill.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An electric forklift, characterized in that: The invention comprises a frame (100), a handle (200), a lifting mechanism (300), a fork frame (400), a moving mechanism (500), a power supply mechanism (600), a power-assisting mechanism (700), and a locking mechanism (800). The frame (100) comprises a base (1001), a pair of shaft seats (1003), the pair of shaft seats (1003) being mounted on one side of a bracket (1002), the handle (200) being rotatably mounted on the top of the base (1001), and the moving mechanism (500) comprising a pair of universal wheels (5001) and a pair of directional wheels (5002), the pair of directional wheels (5002) being rotatably mounted on the top of the base (1001). The shaft is installed inside a pair of shaft seats (1003); a connecting shaft (5004) is connected between the pair of universal wheels (5001); the connecting shaft (5004) is connected to the bottom of the handle (200); the power assist mechanism (700) comprises a pair of shaft bodies (7001), a differential (7002), and a torque motor (7003); the output end of the torque motor (7003) is transmission-connected to the input end of the differential (7002); the output ends of both ends of the differential (7002) are transmission-connected to the pair of shaft bodies (7001); and the free end of the shaft body (7001) is connected to the directional wheel (5002).

2. The electric forklift according to claim 1, characterized in that: The outer side of the connecting shaft (5004) is rotatably connected to a connecting seat (5003), and the connecting seat (5003) is connected to the bottom of the handle (200). The locking mechanism (800) comprises a pressing block (8001), a clamping rod (8002), a fixing seat (8003), a pin (8004), a pair of slide grooves (8005), and a pair of snap rings (8006). The fixing seat (8003) is installed on one side of the connecting seat (5003). The pair of slide grooves (8005) are located on the connecting seat (5003). On both sides of the receiving seat (5003), the pin shaft (8004) is installed inside the fixing seat (8003), the pressing block (8001) is installed on the outside of the pin shaft (8004), the two ends of the clamping rod (8002) slide in a pair of slide grooves (8005), one side of the pressing block (8001) squeezes the clamping rod (8002), and a pair of clamping rings (8006) are installed on the side of the universal wheel (5001) close to each other, and the clamping rod (8002) and the clamping ring (8006) are engaged.

3. An electric forklift according to claim 2, characterized in that: A hook-shaped protrusion is installed on the top of one side of the pressing block (8001), and an arc-shaped protrusion is installed on the bottom of one side of the pressing block (8001); the hook-shaped protrusion pulls the clamping rod (8002), and the arc-shaped protrusion squeezes the clamping rod (8002); the inner wall of the clamping ring (8006) has a plurality of clamping grooves, and the clamping rod (8002) slides in the clamping grooves.

4. The electric forklift according to claim 2, characterized in that: The pair of universal wheels (5001) are each provided with a mounting cavity on one side close to each other, and the clamping ring (8006) is mounted in the mounting cavity.

5. The electric forklift according to claim 1, characterized in that: The power supply mechanism (600) comprises a power supply box, and a storage battery is installed in the power supply box. A charging interface is provided on the outer side of the power supply box. A control panel is installed at the armrest of the handle (200). The control panel is electrically connected to the torque motor (7003) and the lifting mechanism (300). The storage battery supplies power to the control panel. The power supply mechanism (600) is installed on the top of the base (1001).

6. The electric forklift according to claim 1, characterized in that: The pair of universal wheels (5001) and the pair of fixed wheels (5002) have the same specifications.

7. The electric forklift according to claim 1, characterized in that: The frame (100) further comprises a bracket (1002), wherein the bracket (1002) is mounted on the top of the base (1001), the fork frame (400) slides on one side of the bracket (1002), the lifting mechanism (300) is mounted inside the bracket (1002), and the output end of the lifting mechanism (300) is connected to the fork frame (400).

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