CN113352880A - Electric forklift driving system - Google Patents
Electric forklift driving system Download PDFInfo
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- CN113352880A CN113352880A CN202110782339.1A CN202110782339A CN113352880A CN 113352880 A CN113352880 A CN 113352880A CN 202110782339 A CN202110782339 A CN 202110782339A CN 113352880 A CN113352880 A CN 113352880A
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- brake
- cover plate
- shell
- motor
- speed reduction
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- 230000009467 reduction Effects 0.000 claims abstract description 77
- 238000007789 sealing Methods 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 239000000565 sealant Substances 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses an electric forklift driving system which comprises a wet type mechanical braking driving system and an electromagnetic braking driving system, wherein the wet type mechanical braking driving system comprises a reduction gearbox and a motor, and the reduction gearbox comprises a wet type mechanical braking system, a primary speed reduction system, a secondary speed reduction system and a wheel shaft. The invention realizes high efficiency and low noise through the helical gear meshing transmission of the primary speed reduction of the reduction box and the planetary gear train meshing transmission of the secondary speed reduction, simultaneously realizes the integrated design of wet mechanical braking, simultaneously meets the braking requirements of electric forklifts with different tonnages through the design of increasing or reducing friction plates, realizes the universal design of wet mechanical braking parts such as a brake rod, a pressure plate and the like, achieves the aim of saving cost, realizes the design of different versions of wet mechanical braking and electromagnetic braking of a driving system through the change of an output shaft of a motor, and meets the requirements of different customers.
Description
Technical Field
The invention belongs to the technical field of driving systems, and particularly relates to a driving system of an electric forklift.
Background
A conventional electric forklift drive system generally employs a single-motor acceleration and deceleration drive axle device (hereinafter referred to as a single-drive bridge). The single-drive electric bridge mainly includes a driving motor, a gear reduction box, a differential mechanism, half shafts, an axle and a braking system. The power is transmitted to the gear reduction box through the motor, then transmitted to the half shaft through the differential mechanism, and finally driven to the wheels. For a large-tonnage forklift, the required motor is large in size, meanwhile, the required speed reduction ratio is large, the whole driving system is large in size, the whole forklift is not favorable for overall arrangement, and the parameters of the whole forklift are not advantageous.
Therefore, it is necessary to provide a driving system for an electric forklift to solve the above problems.
Disclosure of Invention
In view of the above problems, the present invention provides a driving system for an electric forklift to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a driving system of an electric forklift comprises a wet-type mechanical braking driving system and an electromagnetic braking driving system, wherein the wet-type mechanical braking driving system comprises a reduction gearbox and a motor, the reduction gearbox comprises a wet-type mechanical braking system, a primary speed reduction system, a secondary speed reduction system and a wheel shaft, the wet-type mechanical braking system is arranged between the primary speed reduction system and the secondary speed reduction system, and the reduction gearbox is connected with wheels through the wheel shaft;
the electromagnetic braking driving system comprises a reduction gearbox, a motor and an electromagnetic brake, the electromagnetic brake and the wet-type mechanical braking system are mutually replaced, and the electromagnetic brake is positioned between primary deceleration and secondary deceleration.
Furthermore, the reduction gearbox further comprises a cover plate and a shell, the cover plate is attached to the side face of the shell, a plurality of bolt positioning holes and positioning pin holes are formed in the side face of the cover plate, and first bolts correspondingly matched with the bolt positioning holes and positioning pins correspondingly matched with the positioning pin holes are arranged in the cover plate.
Furthermore, the primary speed reduction comprises a driving gear shaft and a driven gear, the driving gear shaft is meshed with the driven gear, the inner side surface of the cover plate is supported by the primary speed reduction through a first bearing, a brake frame is arranged on one side of the driven gear, and the brake frame is fixedly connected with the driven gear through a second bolt;
the reduction gearbox is matched with the motor shaft through a driving gear shaft, a third bolt penetrates through the driving gear shaft, the driving gear shaft is fixedly connected with the cover plate through the third bolt, and the reduction gearbox is fixedly connected with the motor through a plurality of first bolts.
Furthermore, the wheel shaft is supported on one side of the shell through a second bearing and a third bearing, the second bearing and the third bearing are both located inside the shell, an oil seal is arranged between the wheel shaft and the shell, and the oil seal is located on the surface of the inner side wall of the wheel shaft.
Furthermore, the secondary speed reduction comprises a sun wheel shaft, four planet wheels, a fixed gear ring and a planet carrier, the fixed gear ring is pressed in the shell, the four planet wheels are fixed on the planet carrier through fourth bearings, and the planet carrier is meshed with the wheel shaft through splines.
Furthermore, one end of the brake frame is positioned through a seam allowance, the seam allowance is sleeved on the surface of the second bolt, the other end of the brake frame is supported on the thrust bearing seat through a fifth bearing, the brake frame is of a coupling structure, the circumferential side surface inside the brake frame is meshed with the sun wheel shaft through a spline, the circumferential side surface outside the brake frame is meshed with the friction plate, the friction plate comprises a plurality of iron sheets, and the iron sheets are fixedly connected with the inner side edge of the shell.
Furthermore, a brake rod is arranged on one side of the bottom of the cover plate, a pressing plate is arranged in the cover plate and positioned between the brake frame and the cover plate, the brake rod penetrates through the cover plate, and the brake rod is connected with the pressing plate.
Furthermore, a sealing washer is arranged on the side face of the shell, the sealing washer is positioned between the reduction gearbox and the motor, and the first bolt penetrates through the sealing washer;
a first combining surface is arranged at the joint of the cover plate and the front end cover of the motor, and sealant is arranged on the surface of the first combining surface;
and a second joint surface is arranged at the joint of the cover plate and the shell, and sealant is arranged on the surface of the second joint surface.
The invention has the technical effects and advantages that:
1. the invention realizes high efficiency and low noise through the helical gear meshing transmission of the primary speed reduction of the reduction box and the planetary gear train meshing transmission of the secondary speed reduction, simultaneously realizes the integrated design of wet mechanical braking, simultaneously meets the braking requirements of electric forklifts with different tonnages through the design of increasing or reducing friction plates, realizes the universal design of wet mechanical braking parts such as a brake rod, a pressure plate and the like, achieves the aim of saving cost, realizes the design of different versions of wet mechanical braking and electromagnetic braking of a driving system through the change of an output shaft of a motor, and meets the requirements of different customers.
2. According to the invention, through the sealing design of the first bonding surface between the reduction gearbox and the motor through the sealant, the manner that the sealant is coated on the second bonding surface between the shell of the reduction gearbox and the cover plate and the first bolt penetrates through the sealing washer, the shell can be prevented from being stressed greatly due to the misoperation of the whole vehicle, the dislocation displacement between the shell and the cover plate is reduced, and the oil inside the shell is prevented from leaking. The sealing effect of the shell is increased between the wheel shaft and the shell through the oil seal, so that the dustproof and waterproof effects are achieved, and the protection grade of the driving system is greatly improved through the sealing design.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 illustrates a wet mechanical brake actuation system power transmission schematic of an embodiment of the present invention;
FIG. 2 shows an isometric view of a wet mechanical brake actuation system of an embodiment of the present invention;
FIG. 3 illustrates an electromagnetic brake actuation system power transmission schematic of an embodiment of the present invention;
FIG. 4 shows an isometric view of an electromagnetic brake actuation system of an embodiment of the present invention;
FIG. 5 is a schematic view of a reduction gearbox of an embodiment of the invention in partial section;
FIG. 6 shows a partial view of a housing and cover connection of an embodiment of the present invention;
FIG. 7 is a schematic side view of a cover plate according to an embodiment of the present invention;
in the figure: 1. a reduction gearbox; 111. a cover plate; 1111. bolt positioning holes; 1112. a positioning pin hole; 112. a housing; 113. a first bolt; 114. oil sealing; 116. a sealing gasket; 117. a first bonding surface; 118. a second bonding surface; 12. a wet mechanical brake system; 121. a brake lever; 122. pressing a plate; 123. iron sheets; 124. a friction plate; 13. first-stage speed reduction; 131. a drive gear shaft; 132. a driven gear; 133. a second bolt; 134. a brake frame; 135. a first bearing; 136. a third bolt; 14. performing secondary speed reduction; 141. a sun gear shaft; 142. a planet wheel; 143. fixing the gear ring; 144. a planet carrier; 145. a second bearing; 146. a third bearing; 147. a fourth bearing; 148. a thrust bearing seat; 149. a fifth bearing; 15. a wheel axle; 4. a motor; 5. an electromagnetic brake.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an electric forklift driving system, which comprises a wet type mechanical braking driving system and an electromagnetic braking driving system as shown in figures 1-4, wherein the wet type mechanical braking driving system comprises a reduction gearbox 1 and a motor 4, the reduction gearbox 1 comprises a wet type mechanical braking system 12, a primary speed reduction 13, a secondary speed reduction 14 and a wheel axle 15, the wet type mechanical braking system 12 is positioned between the primary speed reduction 13 and the secondary speed reduction 14, and the reduction gearbox 1 is connected with wheels through the wheel axle 15; the power of the motor 4 is transmitted to the wheels through the wheel shaft 15 after passing through the primary speed reduction 13, the wet type mechanical braking system 12 and the secondary speed reduction 14 in sequence, and the rotating effect of the wheels is achieved.
The electromagnetic braking driving system comprises a reduction gearbox 1, a motor 4 and an electromagnetic brake 5, wherein the electromagnetic brake 5 and a wet-type mechanical braking system 12 are replaced with each other, and the electromagnetic brake 5 is arranged between a primary speed reduction 13 and a secondary speed reduction 14. The electromagnetic brake driving system replaces the wet mechanical brake system 12 with the electromagnetic brake 5, and the electromagnetic brake 5 can play a role in braking the wheels.
Illustratively, the motor 4 comprises a stator and a rotor, a front end cover and a rear end cover, the front end cover of the motor 4 is connected with the cover plate 111, and the stator and the rotor of the motor 4 are connected with the driving gear shaft 131 of the reduction gearbox 1.
As shown in fig. 1, 3 and 5, the primary speed reducer 13 includes a driving gear shaft 131 and a driven gear 132, the driving gear shaft 131 is engaged with the driven gear 132, the primary speed reducer 13 supports the inner side surface of the cover plate 111 through a first bearing 135, a brake frame 134 is arranged on one side of the driven gear 132, and the brake frame 134 is fixedly connected with the driven gear 132 through a second bolt 133; the reduction gearbox 1 is matched with the motor 4 through a driving gear shaft 131, a third bolt 136 penetrates through the driving gear shaft 131, the driving gear shaft 131 is fixedly connected with the cover plate 111 through the third bolt 136, and the reduction gearbox 1 is fixedly connected with the motor 4 through a plurality of first bolts 113.
Since the driving gear shaft 131 is connected with the motor 4 shaft, the output power of the motor 4 is transmitted to the driving gear shaft 131 inside the reduction gearbox 1 through the stator and the rotor of the motor 4, and the driving gear shaft 131 is meshed with the driven gear 132, the power is output to the driven gear 132 and transmitted to the brake frame 134 through the driven gear 132, and since the inner circumferential side of the brake frame 134 is meshed with the sun gear shaft 141 through the splines, the power is transmitted to the sun gear shaft 141 of the secondary reduction gearbox 14 through the brake frame 134.
As shown in fig. 5, the axle 15 is supported on one side of the housing 112 by a second bearing 145 and a third bearing 146, the second bearing 145 and the third bearing 146 are both located inside the housing 112, and an oil seal 114 is provided between the axle 15 and the housing 112, the oil seal 114 being located on the inner side wall surface of the axle 15. The oil seal 114 is used for realizing the sealing effect inside the shell 112, oil can be sealed inside the cavity of the shell 112, the oil lubrication effect of the second bearing 145 and the third bearing 146 is realized, and the dustproof and waterproof effects are achieved.
As shown in fig. 1, 3 and 5, the two-stage reduction gear 14 includes a sun gear shaft 141, four planetary gears 142, a fixed ring gear 143, and a planet carrier 144, the fixed ring gear 143 is press-fitted inside the housing 112, the four planetary gears 142 are each fixed to the planet carrier 144 by a fourth bearing 147, and the planet carrier 144 is engaged with the gear shaft 15 by a spline. After power is transmitted to the sun gear shaft 141, the sun gear shaft 141 is meshed with the planetary gear 142, the power is transmitted to the planet carrier 144 through the planetary gear 142 and is output through the planet carrier 144, the planet carrier 144 is meshed with the gear shaft 15 through a spline, and the power is output to wheels through the gear shaft 15, so that the wheels rotate.
One end of the brake frame 134 is positioned through a spigot, the spigot is sleeved on the surface of the second bolt 133, the other end of the brake frame 134 is supported on a thrust bearing seat 148 through a fifth bearing 149, the brake frame 134 is arranged into a coupling structure, the inner circumferential side surface of the brake frame 134 is meshed with the sun gear shaft 141 through a spline, the outer circumferential side surface of the brake frame 134 is meshed with the friction plate 124, the friction plate 124 comprises a plurality of iron sheets 123, and the iron sheets 123 are fixedly connected with the inner side edge of the shell 112. A brake lever 121 is arranged on one side of the bottom of the cover plate 111, a pressing plate 122 is arranged in the cover plate 111, the pressing plate 122 is positioned between the brake bracket 134 and the cover plate 111, the brake lever 121 penetrates through the cover plate 111, and the brake lever 121 is connected with the pressing plate 122. The brake rod 121 is arranged at the bottom of the cover plate 111, so that the interference of a front end cover of the motor 4 on the brake rod 121 can be reduced, the diameter of the motor 4 is increased through the brake rod 121, the length of the motor 4 is reduced, the overall length of a driving system is further reduced, and the width of the whole vehicle is reduced.
Brake fluid with moving pressure is supplied through the oil cylinder, the brake fluid pushes the pressing plate 122 to move and tightly press the friction plate 124 and the iron plate 123, the brake frame 134 is limited through the friction plate 124, the brake frame 134 cannot rotate, power cannot be transmitted to the sun wheel shaft 141, and wet braking is achieved. Meanwhile, the brake rod 121 can be pulled up in a cable mode, the pulling force of the brake rod 121 is transmitted to the pressing plate 122, and the pressing plate 122 can achieve the pressing effect of the friction plate 124 and the iron plate 123, so that parking braking is achieved.
As shown in fig. 5, 6 and 7, the reduction gearbox 1 further includes a cover plate 111 and a housing 112, the cover plate 111 is attached to the side surface of the housing 112, the side surface of the cover plate 111 is provided with a plurality of bolt positioning holes 1111 and positioning pin holes 1112, and the cover plate 111 is internally provided with a first bolt 113 correspondingly matched with the bolt positioning holes 1111 and a positioning pin correspondingly matched with the positioning pin holes 1112. A sealing washer 116 is arranged on the side surface of the shell 112, the sealing washer 116 is positioned between the reduction gearbox 1 and the motor 4, and the first bolt 113 penetrates through the sealing washer 116; a first combining surface 117 is arranged at the joint of the cover plate 111 and the front end cover of the motor 4, and sealant is arranged on the surface of the first combining surface 117; a second joint surface 118 is arranged at the joint of the cover plate 111 and the shell 112, and a sealant is arranged on the surface of the second joint surface 118.
The casing 112 and the cover plate 111 of the reduction gearbox 1 are fixedly connected, and the positioning pin is matched with the positioning pin holes 1112 through the matching of the first bolts 113 and the bolt positioning holes 1111, and has a shearing action besides a positioning action, so that the tightness between the cover plate 111 and the casing 112 is improved. The first joint surface 117 between the reduction gearbox 1 and the motor 4 is sealed by a sealant, the second joint surface 118 between the shell 112 of the reduction gearbox 1 and the cover plate 111 is coated with the sealant, and the first bolt 113 penetrates through the sealing washer 116, so that the phenomenon that the stress of the shell 112 is large due to the misoperation of the whole vehicle can be avoided, the dislocation displacement between the shell 112 and the cover plate 111 is reduced, and the leakage of oil liquid in the shell 112 is avoided. The sealing effect of the shell 112 is increased between the wheel shaft 15 and the shell 112 through the oil seal 114, so that the dustproof and waterproof effects are achieved, and the protection grade of the driving system is greatly improved due to the sealing design.
According to the invention, the double-drive and braking functions of the electric forklift are realized by designing different matching modes of the driving motor and the reduction gearbox. The reduction box 1 realizes high efficiency and low noise through the helical gear meshing transmission of the primary speed reduction 13 and the planetary gear train meshing transmission of the secondary speed reduction 14, and simultaneously realizes the integration design of wet mechanical braking. Meanwhile, the design of increasing or reducing the friction plates 124 meets the braking requirements of electric forklifts with different tonnages, the universal design of wet mechanical braking parts such as the brake rod 121 and the pressure plate 122 is realized, and the purpose of saving cost is achieved. Meanwhile, through the reinforced design of the connection between the shell 112 and the cover plate 111 and the sealing design between the reduction gearbox 1 and the motor 4, the bearing capacity of the driving system is improved, and the risk of oil leakage caused by misoperation and the like is reduced. In addition, through the change of the output shaft of the motor 4, the design of different versions of the wet mechanical brake and the electromagnetic brake of the driving system is realized, different customer requirements are met, the platformization and the universalization of main parts of the driving system are realized, and the design and management cost is saved. Meanwhile, the independent double-drive system is more convenient and saves time in the aspects of assembly and disassembly of the whole machine.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. An electric forklift drive system, characterized in that: the wet type mechanical brake system comprises a wet type mechanical brake driving system and an electromagnetic brake driving system, wherein the wet type mechanical brake driving system comprises a reduction gearbox (1) and a motor (4), the reduction gearbox (1) comprises a wet type mechanical brake system (12), a primary speed reduction (13), a secondary speed reduction (14) and a wheel axle (15), the wet type mechanical brake system (12) is arranged between the primary speed reduction (13) and the secondary speed reduction (14), and the reduction gearbox (1) is connected with wheels through the wheel axle (15);
the electromagnetic braking driving system comprises a reduction gearbox (1), a motor (4) and an electromagnetic brake (5), wherein the electromagnetic brake (5) and the wet-type mechanical braking system (12) are replaced with each other, and the electromagnetic brake (5) is arranged between a first-stage speed reduction (13) and a second-stage speed reduction (14).
2. The electric forklift drive system according to claim 1, characterized in that:
the reduction gearbox (1) further comprises a cover plate (111) and a shell (112), the cover plate (111) is attached to the side face of the shell (112), a plurality of bolt positioning holes (1111) and positioning pin holes (1112) are formed in the side face of the cover plate (111), and a first bolt (113) corresponding to the bolt positioning holes (1111) and a positioning pin corresponding to the positioning pin holes (1112) are arranged inside the cover plate 1.
3. The electric forklift drive system according to claim 2, characterized in that:
the primary speed reducer (13) comprises a driving gear shaft (131) and a driven gear (132), the driving gear shaft (131) is meshed with the driven gear (132), the inner side surface of the cover plate (111) is supported by the primary speed reducer (13) through a first bearing (135), a brake frame (134) is arranged on one side of the driven gear (132), and the brake frame (134) is fixedly connected with the driven gear (132) through a second bolt (133);
the reduction gearbox (1) is matched with the motor (4) through a driving gear shaft (131), a third bolt (136) penetrates through the driving gear shaft (131), the driving gear shaft (131) is fixedly connected with the cover plate (111) through the third bolt (136), and the reduction gearbox (1) is fixedly connected with the motor (4) through a plurality of first bolts (113).
4. The electric forklift drive system according to claim 3, characterized in that:
the wheel shaft (15) is supported on one side of the shell (112) through a second bearing (145) and a third bearing (146), the second bearing (145) and the third bearing (146) are both located inside the shell (112), an oil seal (114) is arranged between the wheel shaft (15) and the shell (112), and the oil seal (114) is located on the surface of the inner side wall of the wheel shaft (15).
5. The electric forklift drive system according to claim 4, characterized in that:
the two-stage speed reduction (14) comprises a sun wheel shaft (141), four planet wheels (142), a fixed gear ring (143) and a planet carrier (144), the fixed gear ring (143) is pressed inside the shell (112), the four planet wheels (142) are all fixed on the planet carrier (144) through fourth bearings (147), and the planet carrier (144) is meshed with the wheel shaft (15) through splines.
6. The electric forklift drive system according to claim 5, characterized in that:
one end of the brake frame (134) is positioned through a seam allowance, the seam allowance is sleeved on the surface of the second bolt (133), the other end of the brake frame (134) is supported on the thrust bearing seat (148) through a fifth bearing (149), the brake frame (134) is arranged to be a coupling structure, the inner circumferential side face of the brake frame (134) is meshed with the sun wheel shaft (141) through a spline, the outer circumferential side face of the brake frame (134) is meshed with the friction plate (124), the friction plate (124) comprises a plurality of iron sheets (123), and the iron sheets (123) are fixedly connected with the inner side edge of the shell (112).
7. The electric forklift drive system according to claim 6, characterized in that:
a brake rod (121) is arranged on one side of the bottom of the cover plate (111), a pressing plate (122) is arranged inside the cover plate (111), the pressing plate (122) is located between the brake frame (134) and the cover plate (111), the brake rod (121) penetrates through the cover plate (111), and the brake rod (121) is connected with the pressing plate (122).
8. The electric forklift drive system according to claim 2, characterized in that:
a sealing washer (116) is arranged on the side face of the shell (112), the sealing washer (116) is located between the reduction gearbox (1) and the motor (4), and the first bolt (113) penetrates through the sealing washer (116);
a first combining surface (117) is arranged at the joint of the cover plate (111) and the front end cover of the motor (4), and sealant is arranged on the surface of the first combining surface (117);
and a second joint surface (118) is arranged at the joint of the cover plate (111) and the shell (112), and sealant is arranged on the surface of the second joint surface (118).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110782339.1A CN113352880A (en) | 2021-07-12 | 2021-07-12 | Electric forklift driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110782339.1A CN113352880A (en) | 2021-07-12 | 2021-07-12 | Electric forklift driving system |
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| Publication Number | Publication Date |
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| CN113352880A true CN113352880A (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110782339.1A Pending CN113352880A (en) | 2021-07-12 | 2021-07-12 | Electric forklift driving system |
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| CN (1) | CN113352880A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576293A (en) * | 2022-03-17 | 2022-06-03 | 西北工业大学宁波研究院 | Electromagnetic mechanical brake, method and application |
| CN115215265A (en) * | 2022-06-07 | 2022-10-21 | 采埃孚合力传动技术(合肥)有限公司 | Electric forklift driving system |
| CN115215264A (en) * | 2022-06-07 | 2022-10-21 | 采埃孚合力传动技术(合肥)有限公司 | Electric fork-lift double-drive system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529579A (en) * | 2012-01-19 | 2012-07-04 | 武汉新能车桥技术发展有限公司 | Drive axle of electronic forklift |
| CN108131424A (en) * | 2017-12-25 | 2018-06-08 | 杭州前进齿轮箱集团股份有限公司 | A kind of Direct wheel drives retarder |
| CN108383044A (en) * | 2018-04-19 | 2018-08-10 | 浙江中力机械有限公司 | Lithium battery fork truck |
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2021
- 2021-07-12 CN CN202110782339.1A patent/CN113352880A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102529579A (en) * | 2012-01-19 | 2012-07-04 | 武汉新能车桥技术发展有限公司 | Drive axle of electronic forklift |
| CN108131424A (en) * | 2017-12-25 | 2018-06-08 | 杭州前进齿轮箱集团股份有限公司 | A kind of Direct wheel drives retarder |
| CN108383044A (en) * | 2018-04-19 | 2018-08-10 | 浙江中力机械有限公司 | Lithium battery fork truck |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576293A (en) * | 2022-03-17 | 2022-06-03 | 西北工业大学宁波研究院 | Electromagnetic mechanical brake, method and application |
| CN114576293B (en) * | 2022-03-17 | 2023-06-30 | 西北工业大学宁波研究院 | Electromagnetic mechanical brake, method and application |
| CN115215265A (en) * | 2022-06-07 | 2022-10-21 | 采埃孚合力传动技术(合肥)有限公司 | Electric forklift driving system |
| CN115215264A (en) * | 2022-06-07 | 2022-10-21 | 采埃孚合力传动技术(合肥)有限公司 | Electric fork-lift double-drive system |
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