Driving device of electric forklift and electric forklift

Abstract

The present invention relates to the technical field of forklifts, and in particular to a driving device of an electric forklift and an electric forklift. The electric forklift comprises a forklift seat, a driving device of the electric forklift, a cab protection component, a lifting and adjusting component and a fork assembly. The present invention can automatically adjust the angle and clamping force of the fork assembly according to the weight and volume of the goods to be transferred, ensure the stability and safety when transporting the goods, and use the fork assembly to effectively cover and fix the goods, increase the fixing area, and adapt to goods of different shapes and sizes. In addition, it can automatically adjust in the event of falling goods, quickly adjust the angle of the fork assembly and the protective ceiling, so as to effectively reduce the risk of falling goods to the equipment and operators, avoid the damage to the driver caused by the direct falling of goods, and significantly improve the operational safety.

Description

Technical Field

[0001] The present invention relates to the technical field of forklifts, and in particular to a driving device of an electric forklift and an electric forklift. Background Art

[0002] Electric forklifts are forklifts that use electricity to drive them. They are widely used in warehousing, logistics and industrial fields for handling, stacking and loading and unloading goods. Compared with traditional internal combustion forklifts, electric forklifts have the advantages of low noise, low emissions and low maintenance costs, and are suitable for use indoors or in places with high environmental requirements.

[0003] At present, the existing electric forklifts have poor stability when carrying heavy objects, which makes the goods easily fall. Especially for irregularly shaped goods, the forks of the existing electric forklifts cannot effectively support and clamp the goods, resulting in instability during the handling process. The goods may even fall and injure the driver, posing a major safety hazard. Summary of the invention

[0004] Based on this, it is necessary to provide a driving device of an electric forklift and an electric forklift to solve at least one technical problem in the background technology.

[0005] A driving device for an electric forklift comprises a driving mounting frame and two wheel side driving assemblies, wherein driving mounting holes are respectively provided in the middle of both sides of the driving mounting frame, and the two wheel side driving assemblies are respectively installed in the two driving mounting holes, and each wheel side driving assembly comprises a driving motor, a driving connecting cylinder, a driving shaft, a cooling driven element and a wheel disc, wherein the driving motor is installed in the driving mounting hole, the inner side of the driving connecting cylinder is installed on one side of the driving mounting frame, and the outer side of the driving connecting cylinder is respectively provided with a conical ring and a wheel disc mounting ring protruding from the inside to the outside, and the diameter of the conical ring gradually increases from the inside to the outside. The outer wall of the conical ring is large, and a plurality of cooling connecting grooves are recessed at intervals along the circumferential direction. The interior of the driving connecting cylinder is hollow to form a hollow cavity. A plurality of cooling grooves are recessed at intervals along the circumferential direction on the outer side of the driving motor, and the plurality of cooling grooves are connected with the hollow cavity. A conical rotating cavity is recessed on the outer side of the inner wall of the hollow cavity, and the conical rotating cavity is connected with the plurality of cooling connecting grooves. The inner end of the driving shaft is connected with the output end of the driving motor, the cooling driven element is installed in the driving shaft, the inner side of the wheel disc is rotatably installed in the wheel disc mounting ring, and the middle part of the inner side of the wheel disc is connected with the driving shaft.

[0006] As a further improvement of the present invention, the cooling driven element includes an induced draft cone and an elastic spiral ring, the middle part of the induced draft cone is installed on the outer end of the driving shaft, and the outer edge of the induced draft cone is rotatably installed in the conical rotating cavity, the outer end of the elastic spiral ring is installed on the inner end of the induced draft cone, and the inner end of the elastic spiral ring is abutted against the outside of the driving motor, and the outer wall of the elastic spiral ring slides and fits against the inner wall of the hollow cavity.

[0007] As a further improvement of the present invention, the induced draft cone comprises a mounting cylinder, a conical rotating cylinder and a plurality of arc-shaped sheets, the middle part of the mounting cylinder is mounted on the outer end of the driving shaft, a conical rotating ring is convexly provided on the outer wall of the mounting cylinder, the outer edge of the conical rotating ring is rotatably arranged on the outer side of the conical rotating cavity, a plurality of connected temperature-averaging holes are concavely provided at intervals along the circumferential direction on the middle part of the outer side of the conical rotating ring, a plurality of connecting columns are convexly provided at intervals along the circumferential direction on the inner outer edge of the conical rotating ring, the inner sides of the plurality of connecting columns are all connected to the outer edge of the outer side of the conical rotating cylinder, and the outer wall of the conical rotating cylinder is rotatably mounted on the inner side of the conical rotating cavity, so that a conical induced draft cavity is formed between the outer wall of the mounting cylinder and the inner wall of the conical rotating cylinder, and the conical induced draft cavity is connected to the plurality of cooling grooves, the outer sides of the plurality of arc-shaped sheets are respectively installed at intervals along the circumferential direction on the middle part of the inner side of the mounting cylinder, and the inner sides of the plurality of arc-shaped sheets are all connected to the inner wall of the conical rotating cylinder.

[0008] An electric forklift comprises a forklift seat, a driving device of the electric forklift, a cab protection component, a lifting and adjusting component and a fork assembly. The forklift seat is hollow inside to form an installation cavity, a lifting and adjusting shaft is arranged on one side of the installation cavity, and rotating connecting grooves are respectively recessed at both ends of a side of the forklift seat adjacent to the lifting and adjusting shaft. The driving device of the electric forklift is installed on the side of the bottom of the forklift seat away from the lifting and adjusting shaft, the bottom of the cab protection component is installed on the top of the forklift seat, the bottom end of the lifting and adjusting component is rotatably installed in the lifting and adjusting shaft, the top end of the lifting and adjusting component is rotatably installed in the cab protection component, and the fork assembly is installed in the lifting and adjusting component.

[0009] As a further improvement of the present invention, the cab protection assembly includes a cab frame, two external reinforcement frames and a protective element. The bottom of the cab frame is installed on the top of the forklift seat, and a protective adjustment groove is recessed in the middle of the top surface of the cab frame adjacent to the lifting and adjusting shaft, and a linkage cylinder is arranged in the protective adjustment groove. The bottoms of the two external reinforcement frames are respectively installed at the two ends of the top of the forklift seat away from the lifting and adjusting shaft, and the inner walls of the two external reinforcement frames are respectively connected to the two ends of the cab frame away from the lifting and adjusting shaft. An external reinforcement cross bar is convexly provided on the top of each external reinforcement frame, and a rotation adjustment hole is recessed at the outer end of the external reinforcement cross bar, a cylinder connecting shaft is rotatably arranged in the rotation adjustment hole, an arc-shaped slide groove is recessed in the middle of the inner side of the external reinforcement cross bar, and the protective element is installed in the two external reinforcement cross bars.

[0010] As a further improvement of the present invention, the protective element includes two adjusting cylinders, two sliding turntables and a protective ceiling, one end of the two adjusting cylinders are respectively connected to the two cylinder connecting shafts, and a connecting shaft is rotatably arranged in the output shaft of each adjusting cylinder, the outer sides of the two sliding turntables are respectively slidably installed in two arc-shaped sliding grooves, a sliding mounting platform is rotatably arranged on the inner side of each sliding turntable, a cylinder supporting block is convexly provided at the outer end of the sliding mounting platform, the outer end of the cylinder supporting block is supported by the end wall of the adjusting cylinder, the two ends of the outer side of the protective ceiling are respectively rotatably installed on the inner ends of the two connecting shafts, the two ends of the inner side of the protective ceiling are respectively slidably installed in the two sliding mounting platforms, and the bottom surface of the protective ceiling is supported on the output shaft of the linkage cylinder.

[0011] As a further improvement of the present invention, the lifting and adjusting assembly includes a lifting mounting frame, a fork mounting slide and two lifting cylinders, the two ends of the inner bottom of the lifting mounting frame are respectively provided with rotating adjustment plates, the inner sides of the two rotating adjustment plates are respectively penetrated by two rotating connecting grooves and are rotatably installed at the two ends of the lifting and adjusting rotating shaft, the two ends of the top of the lifting mounting frame are respectively rotatably connected to the outer ends of the two connecting rotating shafts, the tops of the two ends of the lifting mounting frame are respectively provided with lifting adjustment plates, the two ends of the inner wall of the lifting mounting frame are respectively provided with lifting adjustment slide rails, the bottoms of the two ends of the outer side of the fork mounting slide are respectively provided with cylinder mounting plates, the two ends of the inner side of the fork mounting slide are respectively slidably installed in the two lifting and adjusting slide rails, the bottoms of the two lifting cylinders are respectively installed in the two cylinder mounting plates, and the output shafts of the two lifting cylinders are respectively connected to the two lifting adjustment plates.

[0012] As a further improvement of the present invention, the fork assembly includes a fork mounting frame, two forks and a clamping claw element. A fork connecting platform is protruded from the middle inner side of the fork mounting frame, and the fork connecting platform is connected to the bottom of the fork mounting slide frame. The two ends of the top surface of the fork mounting frame are respectively provided with clamping claw adjustment turntables, and the two ends of the inner bottom of the fork mounting frame are respectively provided with clamping claw cylinder turntables. The inner sides of the two forks are respectively installed at the two ends of the outer bottom of the fork mounting frame, and the clamping claw element is installed in the two clamping claw adjustment turntables and the two clamping claw cylinder turntables.

[0013] As a further improvement of the present invention, the clamping element includes two clamping jaw adjusting cylinders, two clamping jaw connecting rotating bars, a clamping jaw mounting cross bar, three cargo clamping jaws, a connecting cross axis and an adjusting cross axis. The bottom ends of the two clamping jaw adjusting cylinders are respectively rotatably mounted in the two clamping jaw cylinder turntables, each clamping jaw connecting rotating bar is in a "V" shape, the middle parts of the two clamping jaw connecting rotating bars are respectively rotatably mounted in the two clamping jaw adjusting turntables, and the inner ends of the two clamping jaw connecting rotating bars are respectively rotatably connected to the output shafts of the two clamping jaw adjusting cylinders, and the two ends of the clamping jaw mounting cross bar are respectively connected to the outer ends of the two clamping jaw connecting rotating bars, and the clamping jaws Rope winding adjusters are respectively protruded at both ends of the outer side of the mounting cross bar, and the inner ends of the three cargo clamps are respectively installed at intervals on the outer side of the clamp mounting cross bar, and the three cargo clamps are alternately arranged with the two rope winding adjusters, and the middle part and the outer end of the cargo clamp arranged in the middle part of the clamp mounting cross bar are respectively recessed with a first mounting hole and a second mounting hole, the middle part of the connecting horizontal axis is installed in the first mounting hole, and the two ends of the connecting horizontal axis are respectively connected to the middle parts of the other two cargo clamps, the middle part of the adjusting horizontal axis is installed in the second mounting hole, and the two ends of the adjusting horizontal axis are respectively connected to the outer ends of the other two cargo clamps.

[0014] As a further improvement of the present invention, the outer end of each cargo clamp is made of elastic material, and an adjusting rope is arranged in each rope adjuster. The outer end of the adjusting rope is wound around and connected to the adjusting horizontal axis through one end of the connecting horizontal axis.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The present invention can utilize the wheel-side drive assembly to provide driving power for the electric forklift, and simultaneously and evenly cool the wheel disc and the drive motor by quickly sucking the surrounding cooling air, thereby avoiding uneven performance due to local overheating, thereby improving the overall stability and safety of the forklift, reducing failures caused by overheating, ensuring that the electric forklift can still maintain good performance when working under high load or for a long time, and improving the reliability of the equipment.

[0017] 2. The present invention can automatically adjust the angle and clamping force of the fork assembly according to the weight and volume of the goods to be transferred, thereby ensuring stability and safety when transporting the goods, and utilizing the fork assembly to effectively cover and fix the goods, thereby increasing the fixing area, adapting to goods of different shapes and sizes, and reducing the risk of goods falling during movement, so that the present invention can quickly and accurately complete the lifting, handling and clamping of goods according to the conditions of different goods, thereby significantly improving the efficiency of goods transfer and the stability during transportation.

[0018] 3. The present invention can automatically adjust when cargo falls, and quickly respond through the linkage cylinder and the adjustment cylinder to adjust the angle of the fork assembly and the protective ceiling, so as to effectively reduce the risk of falling cargo to the equipment and operators, avoid the damage to the driver caused by the direct fall of cargo, and significantly improve the operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of a driving device of an electric forklift in one embodiment of the present invention.

[0020] Figure 2 The figure is an internal fracture view of a driving device of an electric forklift according to an embodiment of the present invention.

[0021] Figure 3 for Figure 2 Enlarged view of point B in the middle.

[0022] Figure 4 FIG. 1 is a schematic diagram of the interior of a cooling driven element in an embodiment of the present invention.

[0023] Figure 5 FIG. 1 is a three-dimensional schematic diagram of an electric forklift in one embodiment of the present invention.

[0024] Figure 6 FIG. 1 is a schematic diagram of the interior of an electric forklift according to an embodiment of the present invention.

[0025] Figure 7 FIG. 1 is an exploded view of an electric forklift in one embodiment of the present invention.

[0026] Figure 8 It is a partial three-dimensional schematic diagram of a cab protection assembly in one embodiment of the present invention.

[0027] Fig. 9 for Figure 8 Enlarged view of point A in the middle.

[0028] Fig.10 It is a three-dimensional schematic diagram of a fork assembly in one embodiment of the present invention.

[0029] In the figure:

[0030] 10. Drive mounting frame; 11. Drive mounting hole; 20. Wheel side drive assembly; 21. Drive motor; 22. Drive connecting cylinder; 26. Drive shaft; 23. Cooling driven element; 24. Wheel; 221. Conical ring; 222. Wheel mounting ring; 223. Cooling connecting groove; 25. Hollow cavity; 211. Cooling groove; 251. Conical rotating cavity; 231. Air induced cone; 232. Elastic spiral ring; 233. Mounting cylinder; 23 4. Conical rotating cylinder; 235. Arc sheet; 236. Conical rotating ring; 237. Connecting temperature-averaging hole; 238. Connecting column; 230. Conical air induction cavity; 30. Forklift seat; 31. Mounting cavity; 32. Lifting and adjusting shaft; 33. Rotating connecting groove; 40. Cab protection assembly; 41. Cab frame; 42. External reinforcement frame; 43. Protection element; 411. Protection adjustment groove; 412. Linkage cylinder; 421. External reinforcement bar ; 422, rotating adjustment hole; 423, arc-shaped slide; 431, adjusting cylinder; 432, sliding turntable; 433, protective ceiling; 434, connecting shaft; 435, sliding mounting table; 436, cylinder support block; 50, lifting adjustment component; 51, lifting mounting frame; 52, lifting cylinder; 53, fork mounting slide; 511, rotating adjustment plate; 512, lifting adjustment plate; 513, lifting adjustment slide rail; 531, cylinder mounting plate ; 60. Fork assembly; 61. Fork mounting frame; 62. Fork; 63. Clamp element; 611. Fork connecting platform; 612. Clamp adjustment turntable; 613. Clamp cylinder turntable; 631. Clamp adjustment cylinder; 632. Clamp connecting turnbar; 633. Clamp mounting crossbar; 634. Cargo clamp; 635. Connecting cross axis; 636. Adjusting cross axis; 637. Rope reel adjuster; 638. First mounting hole; 639. Second mounting hole. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0032] In the description of the present invention, it should be noted that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] See also Figures 1 to 4 A driving device of an electric forklift includes a driving mounting frame 10 and two wheel-side driving assemblies 20. The middle parts of both sides of the driving mounting frame 10 are respectively provided with driving mounting holes 11. The two wheel-side driving assemblies 20 are respectively installed in the two driving mounting holes 11. Each wheel-side driving assembly 20 includes a driving motor 21, a driving connecting cylinder 22, a driving shaft 26, a cooling driven element 23 and a wheel disc 24. The driving motor 21 is installed in the driving mounting hole 11. The inner side of the driving connecting cylinder 22 is installed on one side of the driving mounting frame 10. The outer side of the driving connecting cylinder 22 is respectively provided with a conical ring 221 and a wheel disc mounting ring 222 from the inside to the outside. The diameter of the conical ring 221 gradually increases from the inside to the outside. A plurality of cooling connecting grooves 223 are recessed on the outer wall of the conical ring 221 at intervals along the circumferential direction, a hollow cavity 25 is formed inside the driving connecting cylinder 22, a plurality of cooling grooves 211 are recessed on the outer side of the driving motor 21 at intervals along the circumferential direction, and the plurality of cooling grooves 211 are connected to the hollow cavity 25, a conical rotating cavity 251 is recessed on the outer side of the inner wall of the hollow cavity 25, and the conical rotating cavity 251 is connected to the plurality of cooling connecting grooves 223, an inner end of the driving shaft 26 is connected to the output end of the driving motor 21, a cooling driven element 23 is installed in the driving shaft 26, an inner side of the wheel disc 24 is rotatably installed in the wheel disc mounting ring 222, and an inner middle part of the wheel disc 24 is connected to the driving shaft 26.

[0035] The cooling driven element 23 includes an induced draft cone 231 and an elastic spiral ring 232. The middle part of the induced draft cone 231 is installed on the outer end of the driving shaft 26, and the outer edge of the induced draft cone 231 is rotatably installed in the conical rotating cavity 251. The outer end of the elastic spiral ring 232 is installed on the inner end of the induced draft cone 231, and the inner end of the elastic spiral ring 232 is abutted against the outer side of the driving motor 21. The outer wall of the elastic spiral ring 232 slides and fits against the inner wall of the hollow cavity 25.

[0036] The induced draft cone 231 includes a mounting tube 233, a conical rotating tube 234 and a plurality of arc-shaped sheets 235. The middle of the mounting tube 233 is mounted on the outer end of the driving shaft 26. A conical rotating ring 236 is convexly provided on the outer wall of the mounting tube 233. The outer edge of the conical rotating ring 236 is rotatably arranged outside the conical rotating cavity 251. A plurality of connected temperature-averaging holes 237 are concavely provided at intervals along the circumferential direction at the middle of the outer side of the conical rotating ring 236. A plurality of connecting columns 238 are convexly provided at intervals along the circumferential direction at the inner outer edge of the conical rotating ring 236. The inner sides of 238 are connected to the outer edges of the outer sides of the conical rotating cylinder 234, and the outer wall of the conical rotating cylinder 234 is rotatably installed on the inner side of the conical rotating cavity 251, so that a conical air induction cavity 230 is formed between the outer wall of the mounting cylinder 233 and the inner wall of the conical rotating cylinder 234, and the conical air induction cavity 230 is connected to a plurality of cooling grooves 211, and the outer sides of a plurality of arc-shaped sheets 235 are respectively installed at intervals in the circumferential direction at the middle part of the inner side of the mounting cylinder 233, and the inner sides of the plurality of arc-shaped sheets 235 are connected to the inner wall of the conical rotating cylinder 234.

[0037] See also Figures 5 to 10 An electric forklift comprises a forklift seat 30, a driving device of the electric forklift, a cab protection component 40, a lifting and adjusting component 50 and a fork assembly 60. The forklift seat 30 is hollow inside to form an installation cavity 31, a lifting and adjusting shaft 32 is arranged on one side of the installation cavity 31, and rotation connecting grooves 33 are respectively recessed at both ends of a side of the forklift seat 30 adjacent to the lifting and adjusting shaft 32. The driving device of the electric forklift is installed at the bottom of the forklift seat 30 away from the lifting and adjusting shaft 32. The bottom of the cab protection component 40 is installed at the top of the forklift seat 30. The bottom end of the lifting and adjusting component 50 is rotatably installed in the lifting and adjusting shaft 32. The top end of the lifting and adjusting component 50 is rotatably installed in the cab protection component 40. The fork assembly 60 is installed in the lifting and adjusting component 50.

[0038] The cab protection assembly 40 includes a cab frame 41, two external reinforcement frames 42 and a protection element 43. The bottom of the cab frame 41 is installed on the top of the forklift seat 30, and a protection adjustment groove 411 is recessed in the middle of the top surface of the cab frame 41 adjacent to the lifting adjustment shaft 32, and a linkage cylinder 412 is arranged in the protection adjustment groove 411. The bottoms of the two external reinforcement frames 42 are respectively installed at the two ends of the top of the forklift seat 30 away from the lifting adjustment shaft 32, and the inner walls of the two external reinforcement frames 42 are respectively connected to the two ends of the cab frame 41 away from the lifting adjustment shaft 32. An external reinforcement cross bar 421 is convexly provided on the top of each external reinforcement frame 42, and a rotation adjustment hole 422 is recessed at the outer end of the external reinforcement cross bar 421, and a cylinder connecting shaft is rotatably arranged in the rotation adjustment hole 422. An arc-shaped slide groove 423 is recessed in the middle of the inner side of the external reinforcement cross bar 421, and the protection element 43 is installed in the two external reinforcement cross bars 421.

[0039] The protective element 43 includes two adjusting cylinders 431, two sliding turntables 432 and a protective ceiling 433. One end of the two adjusting cylinders 431 is respectively connected to the two cylinder connecting shafts, and a connecting shaft 434 is rotatably arranged in the output shaft of each adjusting cylinder 431. The outer sides of the two sliding turntables 432 are respectively slidably installed in the two arc-shaped slide grooves 423. A sliding mounting platform 435 is rotatably arranged on the inner side of each sliding turntable 432. A cylinder supporting block 436 is protruding from the outer end of the sliding mounting platform 435, and the outer end of the cylinder supporting block 436 is abutted against the end wall of the adjusting cylinder 431. The outer ends of the protective ceiling 433 are respectively rotatably installed on the inner ends of the two connecting shafts 434, and the inner ends of the protective ceiling 433 are respectively slidably installed in the two sliding mounting platforms 435, and the bottom surface of the protective ceiling 433 is abutted on the output shaft of the linkage cylinder 412.

[0040] The lifting and adjusting assembly 50 includes a lifting and adjusting mounting frame 51, a fork mounting slide 53 and two lifting cylinders 52. Rotation adjustment plates 511 are respectively provided at both ends of the inner bottom of the lifting and adjusting mounting frame 51. The inner sides of the two rotation adjustment plates 511 are respectively penetrated by two rotation connecting grooves 33 and are rotatably mounted on both ends of the lifting and adjusting rotating shaft 32. The two ends of the top of the lifting and adjusting mounting frame 51 are respectively rotatably connected to the outer ends of the two connecting rotating shafts 434. Lifting and adjusting plates 512 are respectively provided at the top of both ends of the lifting and adjusting mounting frame 51. Lifting and adjusting slide rails 513 are respectively provided at both ends of the inner wall of the lifting and adjusting mounting frame 51. Cylinder mounting plates 531 are respectively provided at the bottom of both ends of the outer side of the fork mounting slide 53. The two ends of the inner side of the fork mounting slide 53 are respectively slidably mounted in the two lifting and adjusting slide rails 513. The bottoms of the two lifting cylinders 52 are respectively mounted in the two cylinder mounting plates 531, and the output shafts of the two lifting cylinders 52 are respectively connected to the two lifting and adjusting plates 512.

[0041] The fork assembly 60 includes a fork mounting frame 61, two forks 62 and a clamping claw element 63. A fork connecting platform 611 is protruded from the middle of the inner side of the fork mounting frame 61. The fork connecting platform 611 is connected to the bottom of the fork mounting slide 53. Clamping claw adjustment turntables 612 are protruded from both ends of the top surface of the fork mounting frame 61. Clamping claw cylinder turntables 613 are protruded from both ends of the inner bottom of the fork mounting frame 61. The inner sides of the two forks 62 are respectively installed at the two ends of the outer bottom of the fork mounting frame 61, and the clamping claw element 63 is installed in the two clamping claw adjustment turntables 612 and the two clamping claw cylinder turntables 613.

[0042] The clamping element 63 includes two clamping jaw adjusting cylinders 631, two clamping jaw connecting rotating bars 632, a clamping jaw mounting cross bar 633, three cargo clamping jaws 634, a connecting cross shaft 635 and an adjusting cross shaft 636. The bottom ends of the two clamping jaw adjusting cylinders 631 are respectively rotatably mounted in the two clamping jaw cylinder turntables 613, each clamping jaw connecting rotating bar 632 is in a "V" shape, and the middle parts of the two clamping jaw connecting rotating bars 632 are respectively rotatably mounted in the two clamping jaw adjusting turntables 612, and the inner ends of the two clamping jaw connecting rotating bars 632 are respectively rotatably connected to the output shafts of the two clamping jaw adjusting cylinders 631, and the two ends of the clamping jaw mounting cross bar 633 are respectively connected to the outer ends of the two clamping jaw connecting rotating bars 632, and the two outer sides of the clamping jaw mounting cross bar 633 are respectively connected to the outer ends of the two clamping jaw connecting rotating bars 632. The inner ends of the three cargo clamps 634 are respectively installed at intervals on the outside of the clamp mounting cross bar 633, and the three cargo clamps 634 are alternately arranged with the two rope adjusters 637. The middle and outer ends of the cargo clamps 634 arranged in the middle of the clamp mounting cross bar 633 are respectively recessed with a first mounting hole 638 and a second mounting hole 639, the middle part of the connecting horizontal axis 635 is installed in the first mounting hole 638, and the two ends of the connecting horizontal axis 635 are respectively connected to the middle parts of the other two cargo clamps 634, the middle part of the adjusting horizontal axis 636 is installed in the second mounting hole 639, and the two ends of the adjusting horizontal axis 636 are respectively connected to the outer ends of the other two cargo clamps 634.

[0043] The outer end of each cargo clamp 634 is made of elastic material, and an adjusting rope is arranged inside each rope adjuster 637 . The outer end of the adjusting rope is wound around and connected to the adjusting horizontal shaft 636 through one end of the connecting horizontal shaft 635 .

[0044] For example, in one embodiment, the rope adjuster 637 is electrically connected to the clamp adjusting cylinder 631 , the linkage cylinder 412 and the adjusting cylinder 431 .

[0045] For example, in one embodiment: when the electric forklift needs to be started, the two drive motors 21 will be started synchronously, and then the two drive shafts 26 will be driven to rotate, and the two wheel discs 24 will be driven to rotate, and then the electric forklift will be driven to move. When the drive shaft 26 rotates, the cooling driven element 23 will rotate, that is, the air induction cone 231 will rotate, and the multiple arc-shaped pieces 235 will rotate with it, and the suction effect will be performed, and then the cooling air around the wheel side drive assembly 20 will be sucked into the conical air induction cavity 230 through the multiple cooling connecting grooves 223 to form a cooling airflow, and then the cooling airflow will be accelerated and guided through the elastic spiral ring 232 to impact the multiple cooling grooves 211 of the drive motor 21, and the drive motor 21 will be quickly cooled. In addition, part of the cooling airflow will flow to the wheel disc 24 through the multiple connected temperature-averaging holes 237, and the wheel disc 24 will be cooled synchronously and evenly, so as to prevent the wheel disc 24 from heating up due to frequent start and stop, and then the whole equipment will be cooled evenly.

[0046] For example, in one embodiment: when the goods need to be transported and transferred, the two lifting cylinders 52 are synchronously started, so that the fork mounting slide 53 moves up and down along the lifting mounting frame 51, and the fork assembly 60 follows the movement until the two forks 62 are set at the same horizontal plane at the bottom of the goods to be transferred, and then the electric forklift is started to move the electric forklift, and then the goods to be transferred are transferred to the two forks 62, and then the two clamping jaw adjusting cylinders 631 are synchronously started, so that the output shafts of the two clamping jaw adjusting cylinders 631 are extended, so that the two clamping jaw connecting rotating bars 632 follow the rotation around the two clamping jaw adjusting turntables 612 respectively, so that the clamping jaw mounting cross bar 633 and the three cargo clamping jaws 634 follow the rotation and descend, and then the goods to be transferred are clamped and fixed. At the same time, the two rope adjusters 637 will be started synchronously, so that the length of the winding of the adjustment rope will be shortened. Since the outer end of the cargo clamp 634 is made of elastic material, the curvature of the cargo clamp 634 will increase, thereby clamping, covering and fixing the cargo to be transferred, increasing the fixing area and improving the stability of the cargo when it is moved.

[0047] For example, in one embodiment: when the weight of the goods to be transferred is large, the two adjusting cylinders 431 are started, so that the output shafts of the two adjusting cylinders 431 retract, so that the two connecting shafts 434 move accordingly, and then the two rotating adjustment plates 511 of the lifting mounting frame 51 rotate around the lifting adjustment shaft 32, so that the fork mounting slide 53 and the fork assembly 60 move accordingly, so that the two forks 62 and the goods to be transferred are tilted upward, thereby preventing the goods to be transferred from falling during the movement.

[0048] For example, in one embodiment: when it is necessary to unload the goods to be transferred, the clamp adjusting cylinder 631 is started, so that the output shafts of the two clamp adjusting cylinders 631 retract, thereby driving the clamp mounting cross bar 633 and the three cargo clamps 634 to rotate and open, and then, the two adjusting cylinders 431 are started, so that the output shafts of the two adjusting cylinders 431 extend, so that the two rotating adjustment plates 511 of the lifting mounting frame 51 rotate around the lifting adjustment shaft 32, thereby making the two forks 62 and the goods to be transferred move downward, so as to facilitate the transfer and playback of the goods to be transferred. At the same time, since the inner ends of the protective ceiling 433 are respectively slidably installed in the two sliding mounting platforms 435, when the two connecting shafts 434 move, the protective ceiling 433 will follow the movement, thereby ensuring the protective effect of the protective ceiling 433 on the cab and preventing the goods from falling when the goods to be transferred are transferred and played back.

[0049] For example, in one embodiment: when the volume of the goods to be transferred is large or a large number of goods are to be transported at one time, the two rope adjusters 637 will be started, thereby lengthening the winding length of the adjustment rope, reducing the pulling force on the cargo clamp 634, and making the outer end of the cargo clamp 634 "straight". At the same time, the two clamp adjustment cylinders 631 will also be started synchronously, so that the clamp mounting cross bar 633 and the three cargo clamps 634 follow the rotation and move upward until the outer end of the clamp connecting the rotating bar 632 becomes vertical, so that the inner side of the goods to be transferred can be against the fork mounting frame 61 and the outer wall of the cargo clamp 634 to support the goods to be transferred. At the same time, the two adjusting cylinders 431 will be started, so that the output shafts of the two adjusting cylinders 431 will retract, so that the two forks 62 and the goods to be transferred will tilt upward, thereby preventing the goods to be transferred from falling during movement.

[0050] For example, in one embodiment, when a large amount of goods to be transported at one time falls from a high place, since the two forks 62 and the goods to be transferred tilt upward at this time, the falling goods will cause the outer ends of the adjacent goods clamping claws 634 to deform, thereby causing the adjustment horizontal axis 636 to tilt, causing the pressure of the rope adjustment device 637 to change. The rope adjustment device 637 recognizes this signal and sends it to the linkage cylinder 412 and the adjustment cylinder 431, causing the output shaft of the linkage cylinder 412 to extend, thereby pushing the protective ceiling 433 to follow the movement, causing the two adjustment cylinders 431 to rotate upward around the two cylinder connecting shafts respectively, and at the same time adjusting the rope adjustment device 637 to move upward. The throttle cylinder 431 will be started, so that the output shaft of the adjusting cylinder 431 will extend, and the lifting mounting frame 51 will rotate around the lifting adjustment shaft 32, so that the fork mounting slide 53 and the fork assembly 60 will be set vertically again or even tilted downward, so that an acute angle is formed between the height direction of the lifting mounting frame 51 and the length direction of the protective ceiling 433, so that the fallen cargo will fall from the tilted protective ceiling 433, preventing the fallen cargo from endangering the safety of the driver, and adjusting the center of gravity of the subsequent cargo by adjusting the lifting adjustment assembly 50 and the fork assembly 60, to prevent the subsequent cargo from falling and possibly continuing to hit the driver.

[0051] Installation process: install the drive motor 21 in the drive mounting hole 11, install the inner side of the drive connecting cylinder 22 on one side of the drive mounting frame 10, connect the inner end of the drive shaft 26 to the output end of the drive motor 21, rotate the inner side of the wheel disc 24 in the wheel disc mounting ring 222, and connect the middle part of the inner side of the wheel disc 24 to the drive shaft 26, install the middle part of the mounting cylinder 233 on the outer end of the drive shaft 26, and rotate the outer edge of the conical rotating ring 236 to the outside of the conical rotating cavity 251, connect the inner sides of multiple connecting columns 238 to the outer edges of the outer sides of the conical rotating cylinder 234, and rotate the outer wall of the conical rotating cylinder 234 to the inner side of the conical rotating cavity 251, and connect the conical air induction cavity 230 to multiple cooling grooves 211, and the outer sides of multiple arc-shaped sheets 235 are arranged at intervals along the circumferential direction. It is installed in the middle of the inner side of the installation cylinder 233, and the inner sides of multiple arc-shaped pieces 235 are connected to the inner wall of the conical rotating cylinder 234, the outer end of the elastic spiral ring 232 is installed on the inner end of the induced air cone 231, and the inner end of the elastic spiral ring 232 is held against the outer side of the driving motor 21, and the outer wall of the elastic spiral ring 232 slides and fits the inner wall of the hollow cavity 25, the driving device of the electric forklift is installed on the bottom of the forklift seat 30 away from the lifting adjustment shaft 32, the bottom of the cab frame 41 is installed on the top of the forklift seat 30, the bottoms of the two outer reinforcement frames 42 are respectively installed on the two ends of the side of the top of the forklift seat 30 away from the lifting adjustment shaft 32, and the inner walls of the two outer reinforcement frames 42 are respectively connected to the two ends of the side of the cab frame 41 away from the lifting adjustment shaft 32, and the two adjusting cylinders 43 One end is connected to the two cylinder connecting shafts respectively, the outer sides of the two sliding turntables 432 are respectively slidably installed in the two arc-shaped slide grooves 423, the outer end of the cylinder abutting block 436 abuts against the end wall of the adjusting cylinder 431, the outer ends of the protective ceiling 433 are respectively rotatably installed on the inner ends of the two connecting rotating shafts 434, the inner ends of the protective ceiling 433 are respectively slidably installed in the two sliding mounting platforms 435, and the bottom surface of the protective ceiling 433 abuts on the output shaft of the linkage cylinder 412, the inner sides of the two rotating adjustment plates 511 are respectively penetrated through the two rotating connecting grooves 33 and rotatably installed on the two ends of the lifting adjustment rotating shaft 32, the top ends of the lifting mounting frame 51 are respectively rotatably connected to the outer ends of the two connecting rotating shafts 434, and the inner ends of the fork mounting slide 53 are respectively slidably installed on the two In the lifting and adjusting slide rail 513, the bottoms of the two lifting cylinders 52 are respectively installed in the two cylinder mounting plates 531, and the output shafts of the two lifting cylinders 52 are respectively connected to the two lifting and adjusting plates 512, the fork connecting platform 611 is connected to the bottom of the fork mounting slide 53, the inner sides of the two forks 62 are respectively installed at the two ends of the outer bottom of the fork mounting frame 61, the bottom ends of the two clamping jaw adjusting cylinders 631 are respectively rotatably installed in the two clamping jaw cylinder turntables 613, the middle parts of the two clamping jaw connecting rotating bars 632 are respectively rotatably installed in the two clamping jaw adjusting turntables 612, and the inner ends of the two clamping jaw connecting rotating bars 632 are respectively rotatably connected to the output shafts of the two clamping jaw adjusting cylinders 631, and the two ends of the clamping jaw mounting cross bar 633 are respectively connected to the outer ends of the two clamping jaw connecting rotating bars 632.The inner ends of the three cargo clamps 634 are installed at intervals on the outer side of the clamp installation cross bar 633, and the three cargo clamps 634 are alternately arranged with the two rope adjustment devices 637. The middle of the connecting horizontal axis 635 is installed in the first installation hole 638, and the two ends of the connecting horizontal axis 635 are respectively connected to the middle of the other two cargo clamps 634. The middle of the adjustment horizontal axis 636 is installed in the second installation hole 639, and the adjustment horizontal axis 636 is respectively connected to the middle of the other two cargo clamps 634.

[0052] The above-mentioned embodiments only express several embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A driving device for an electric forklift, characterized in that: The invention comprises a drive mounting frame (10) and two wheel side drive assemblies (20), wherein drive mounting holes (11) are respectively recessed in the middle of both sides of the drive mounting frame (10), and the two wheel side drive assemblies (20) are respectively installed in the two drive mounting holes (11), and each wheel side drive assembly (20) comprises a drive motor (21), a drive connecting tube (22), a drive shaft (26), a cooling driven element (23) and a wheel disc (24), wherein the drive motor (21) is installed in the drive mounting hole (11), and the inner side of the drive connecting tube (22) is installed on one side of the drive mounting frame (10), and the outer side of the drive connecting tube (22) is respectively protruded from the inside to the outside with a conical ring (221) and a wheel disc mounting ring (222), wherein the diameter of the conical ring (221) gradually increases from the inside to the outside, and the conical ring (22 1) A plurality of cooling communication grooves (223) are recessed at intervals along the circumferential direction on the outer wall; the interior of the driving connection cylinder (22) is hollow to form a hollow cavity (25); a plurality of cooling grooves (211) are recessed at intervals along the circumferential direction on the outer side of the driving motor (21); the plurality of cooling grooves (211) are all connected to the hollow cavity (25); a conical rotating cavity (251) is recessed at the outer side of the inner wall of the hollow cavity (25); the conical rotating cavity (251) is connected to the plurality of cooling communication grooves (223); the inner end of the driving shaft (26) is connected to the output end of the driving motor (21); the cooling driven element (23) is installed in the driving shaft (26); the inner side of the wheel disc (24) is rotatably installed in the wheel disc mounting ring (222); and the inner middle part of the wheel disc (24) is connected to the driving shaft (26); The cooling driven element (23) comprises an air-inducing cone (231) and an elastic spiral ring (232); the middle portion of the air-inducing cone (231) is mounted on the outer end of the driving shaft (26), and the outer edge of the air-inducing cone (231) is rotatably mounted in the conical rotating cavity (251); the outer end of the elastic spiral ring (232) is mounted on the inner end of the air-inducing cone (231), and the inner end of the elastic spiral ring (232) is abutted against the outer side of the driving motor (21); and the outer wall of the elastic spiral ring (232) is slidably fitted against the inner wall of the hollow cavity (25).

2. The driving device of the electric forklift according to claim 1, characterized in that: The induced draft cone (231) comprises a mounting tube (233), a conical rotating tube (234), and a plurality of arc-shaped sheets (235); the middle portion of the mounting tube (233) is mounted on the outer end of the driving shaft (26); a conical rotating ring (236) is convexly provided on the outer wall of the mounting tube (233); the outer edge of the conical rotating ring (236) is rotatably arranged outside the conical rotating cavity (251); a plurality of connected temperature-averaging holes (237) are concavely provided at intervals along the circumferential direction on the middle portion of the outer side of the conical rotating ring (236); a plurality of connecting columns (238) are convexly provided at intervals along the circumferential direction on the inner outer edge of the conical rotating ring (236); and a plurality of connecting columns (238) are convexly provided on the inner outer edge of the conical rotating ring (236). The inner sides of the columns (238) are connected to the outer edges of the outer sides of the conical rotating cylinder (234), and the outer wall of the conical rotating cylinder (234) is rotatably mounted on the inner side of the conical rotating chamber (251), so that a conical air induction chamber (230) is formed between the outer wall of the mounting cylinder (233) and the inner wall of the conical rotating cylinder (234), and the conical air induction chamber (230) is connected to the plurality of cooling grooves (211), and the outer sides of the plurality of arc-shaped sheets (235) are respectively installed at intervals along the circumferential direction at the middle of the inner side of the mounting cylinder (233), and the inner sides of the plurality of arc-shaped sheets (235) are connected to the inner wall of the conical rotating cylinder (234).

3. An electric forklift, characterized in that: The invention comprises a forklift seat (30), a driving device of an electric forklift according to any one of claims 1 to 2, a cab protection component (40), a lifting and adjusting component (50) and a fork assembly (60), wherein the interior of the forklift seat (30) is hollow to form an installation cavity (31), a lifting and adjusting shaft (32) is arranged on one side of the installation cavity (31), and rotation connecting grooves (33) are respectively recessed at both ends of a side of the forklift seat (30) adjacent to the lifting and adjusting shaft (32), the driving device of the electric forklift is installed on a side of the bottom of the forklift seat (30) away from the lifting and adjusting shaft (32), the bottom of the cab protection component (40) is installed on the top of the forklift seat (30), the bottom end of the lifting and adjusting component (50) is rotatably installed in the lifting and adjusting shaft (32), the top end of the lifting and adjusting component (50) is rotatably installed in the cab protection component (40), and the fork assembly (60) is installed in the lifting and adjusting component (50).

4. The electric forklift according to claim 3, characterized in that: The cab protection assembly (40) comprises a cab frame (41), two external reinforcement frames (42) and a protection element (43). The bottom of the cab frame (41) is mounted on the top of a forklift seat (30), and a protection adjustment groove (411) is recessed in the middle of one side of the top surface of the cab frame (41) adjacent to the lifting adjustment shaft (32). A linkage cylinder (412) is arranged in the protection adjustment groove (411). The bottoms of the two external reinforcement frames (42) are respectively mounted on one side of the top of the forklift seat (30) away from the lifting adjustment shaft (32). The two outer reinforcement frames (42) are respectively connected to the two ends of the cab frame (41) on one side away from the lifting adjustment shaft (32); an outer reinforcement bar (421) is convexly provided on the top of each outer reinforcement frame (42); a rotation adjustment hole (422) is concavely provided on the outer end of the outer reinforcement bar (421); a cylinder connecting shaft is rotatably provided in the rotation adjustment hole (422); an arc-shaped slide groove (423) is concavely provided in the middle of the inner side of the outer reinforcement bar (421); and the protective element (43) is installed in the two outer reinforcement bars (421).

5. The electric forklift according to claim 4, characterized in that: The protective element (43) comprises two adjusting cylinders (431), two sliding turntables (432) and a protective ceiling (433). One end of the two adjusting cylinders (431) is respectively connected to two cylinder connecting shafts, and a connecting shaft (434) is rotatably arranged inside the output shaft of each adjusting cylinder (431). The outer sides of the two sliding turntables (432) are respectively slidably installed in two arc-shaped sliding grooves (423), and a sliding installation is rotatably arranged inside each sliding turntable (432). The sliding mounting platform (435) is provided with a cylinder supporting block (436) protruding from the outer end of the sliding mounting platform (435), and the outer end of the cylinder supporting block (436) is supported on the end wall of the adjusting cylinder (431). The outer ends of the protective ceiling (433) are respectively rotatably mounted on the inner ends of the two connecting shafts (434), and the inner ends of the protective ceiling (433) are respectively slidably mounted in the two sliding mounting platforms (435), and the bottom surface of the protective ceiling (433) is supported on the output shaft of the linkage cylinder (412).

6. The electric forklift according to claim 5, characterized in that: The lifting and adjusting assembly (50) comprises a lifting and adjusting frame (51), a fork mounting slide (53) and two lifting cylinders (52). The lifting and adjusting frame (51) has two rotating adjustment plates (511) protruding from the inner bottom ends thereof. The inner sides of the two rotating adjustment plates (511) are respectively penetrated by two rotating connecting grooves (33) and are rotatably mounted on the two ends of the lifting and adjusting rotating shaft (32). The top ends of the lifting and adjusting frame (51) are respectively rotatably connected to the outer ends of the two connecting rotating shafts (434). The top ends of the lifting and adjusting frame (51) are respectively protruding from the upper ends thereof. A lifting adjustment plate (512) is provided, lifting adjustment slide rails (513) are respectively provided at both ends of the inner wall of the lifting mounting frame (51), cylinder mounting plates (531) are respectively protruding at the bottom of both ends of the outer side of the fork mounting slide frame (53), the inner ends of the fork mounting slide frame (53) are respectively slidably mounted in the two lifting adjustment slide rails (513), the bottoms of the two lifting cylinders (52) are respectively mounted in the two cylinder mounting plates (531), and the output shafts of the two lifting cylinders (52) are respectively connected to the two lifting adjustment plates (512).

7. The electric forklift according to claim 6, characterized in that: The fork assembly (60) comprises a fork mounting frame (61), two forks (62) and a clamping claw element (63). A fork connecting platform (611) is protrudingly provided at the middle of the inner side of the fork mounting frame (61). The fork connecting platform (611) is connected to the bottom of the fork mounting slide frame (53). The top ends of the fork mounting frame (61) are respectively provided with clamping claw adjustment turntables (612). The inner ends of the bottom of the inner side of the fork mounting frame (61) are respectively provided with clamping claw cylinder turntables (613). The inner sides of the two forks (62) are respectively mounted at the two ends of the outer bottom of the fork mounting frame (61). The clamping claw element (63) is mounted in the two clamping claw adjustment turntables (612) and the two clamping claw cylinder turntables (613).

8. The electric forklift according to claim 7, characterized in that: The clamping jaw element (63) comprises two clamping jaw adjusting cylinders (631), two clamping jaw connecting rotating bars (632), a clamping jaw mounting cross bar (633), three cargo clamping jaws (634), a connecting cross shaft (635) and an adjusting cross shaft (636). The bottom ends of the two clamping jaw adjusting cylinders (631) are respectively rotatably mounted in two clamping jaw cylinder turntables (613). Each clamping jaw connecting rotating bar (632) is in a "V" shape. The middle parts of the two clamping jaw connecting rotating bars (632) are respectively rotatably mounted in two clamping jaw adjusting turntables (612). The inner ends of the two clamping jaw connecting rotating bars (632) are respectively rotatably connected to the output shafts of the two clamping jaw adjusting cylinders (631). The two ends of the clamping jaw mounting cross bar (633) are respectively connected to the outer ends of the two clamping jaw connecting rotating bars (632). The outer two ends of the clamping jaw mounting cross bar (633) are respectively connected to the outer ends of the two clamping jaw connecting rotating bars (632). The ends of the cargo clamps (634) are respectively provided with rope winding regulators (637) protruding therefrom, the inner ends of the three cargo clamps (634) are respectively installed at intervals on the outside of the clamp mounting cross bar (633), and the three cargo clamps (634) are respectively arranged alternately with the two rope winding regulators (637), the cargo clamps (634) arranged in the middle of the clamp mounting cross bar (633) are respectively provided with first mounting holes (638) and second mounting holes (639) in the middle and outer ends, the middle of the connecting cross shaft (635) is installed in the first mounting hole (638), and the two ends of the connecting cross shaft (635) are respectively connected to the middle of the other two cargo clamps (634), the middle of the adjusting cross shaft (636) is installed in the second mounting hole (639), and the two ends of the adjusting cross shaft (636) are respectively connected to the outer ends of the other two cargo clamps (634).

9. The electric forklift according to claim 8, characterized in that: The outer end of each cargo clamping claw (634) is made of elastic material, and an adjusting rope is arranged inside each rope adjuster (637). The outer end of the adjusting rope is wound around one end of the connecting horizontal shaft (635) and connected to the adjusting horizontal shaft (636).

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