CN115215265A - Electric forklift driving system - Google Patents
Electric forklift driving system Download PDFInfo
- Publication number
- CN115215265A CN115215265A CN202210632636.2A CN202210632636A CN115215265A CN 115215265 A CN115215265 A CN 115215265A CN 202210632636 A CN202210632636 A CN 202210632636A CN 115215265 A CN115215265 A CN 115215265A
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- speed reduction
- brake
- motor
- shaft
- electric forklift
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- 230000009467 reduction Effects 0.000 claims abstract description 63
- 239000000498 cooling water Substances 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 210000000078 claw Anatomy 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 3
- 238000013021 overheating Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07572—Propulsion arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07509—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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
- F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
- F16D55/36—Brakes with a plurality of rotating discs all lying side by side
- F16D55/40—Brakes with a plurality of rotating discs all lying side by side actuated by a fluid-pressure device arranged in or one the brake
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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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0473—Friction devices, e.g. clutches or brakes
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
- F16H57/0486—Gearings with gears having orbital motion with fixed gear ratio
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Braking Arrangements (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses an electric forklift driving system which comprises a reduction gearbox and a motor, wherein the output end of the motor is connected with the reduction gearbox, and the reduction gearbox comprises a wet type mechanical braking system, a primary speed reduction system and a secondary speed reduction system. The invention is more convenient and saves time in the aspects of the assembly and disassembly of the whole machine through the independent double-drive system; in addition, a circulating cooling water pipe is additionally arranged in the shell to cool the primary speed reduction system, the secondary speed reduction system and the wet mechanical brake system, so that the problem of internal overheating during high-strength operation of the large-tonnage forklift is avoided, the stability of transmission and braking is improved, and the fatigue life of a product is ensured; meanwhile, by designing the brake rod with the compression spring structure, the negative brake function of the vehicle is realized, so that the vehicle is safer and more reliable during operation; through adopting aluminium alloy's casing and apron for actuating system is lighter, has improved the energy consumption of vehicle.
Description
Technical Field
The invention belongs to the technical field of forklift driving, and particularly relates to an electric forklift driving system.
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 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.
In addition, for a large-tonnage forklift, a transmission system bears larger torque, a braking system can absorb higher heat, and the internal temperature rise of the driving system is easily overhigh in actual work, so that the stability of transmission and braking and the fatigue life of parts are influenced. Meanwhile, in order to meet the heavy load requirement, the overall dimension of the driving system needs to be increased to meet the load requirement, so that the driving system has the problem of overweight, and the energy consumption of the whole vehicle is increased.
In recent years, with the annual improvement of national safety requirements on the whole vehicle, the whole vehicle is provided with a negative braking function, and the negative braking function is becoming an industry trend. In the aspect of vehicle braking, the conventional double-drive split type driving system is generally provided with a set of active wet brake system, but the negative braking function can be realized only by mounting an electromagnetic brake and other devices on a motor shaft, so that the problems of high cost, influence on the spatial arrangement of the whole vehicle and the like exist.
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: the electric forklift driving system comprises a reduction gearbox and a motor, wherein the output end of the motor is connected with the reduction gearbox, the reduction gearbox comprises a wet-type mechanical braking system, a first-stage speed reduction and a second-stage speed reduction, the wet-type mechanical braking system is positioned between the first-stage speed reduction and the second-stage speed reduction, the reduction gearbox further comprises a wheel shaft, the wheel shaft is correspondingly sleeved at the outer side end of the second-stage speed reduction, and the wheel shaft is connected with wheels through a plurality of screws.
Furthermore, the reducing gear box still includes apron, casing and condenser tube, a side of apron corresponds with the output of motor, and apron and casing pass through bolted connection fixedly, the import and the export of condenser tube stretch out to the casing outside through two holes on the casing, and condenser tube is connected with the water pump through import and export, and the reducing gear box passes through a plurality of first bolts and motor erection joint.
Furthermore, the primary speed reduction comprises a driving gear shaft, the reduction gearbox is matched with a motor shaft through the driving gear shaft, the circumferential side face of the driving gear shaft is meshed with the driven gear, the second bolt penetrates through the braking frame, the braking frame is fixedly connected with the driven gear through the second bolt, the primary speed reduction is supported on the cover plate through the first bearing, and the center of the driving gear shaft is fixed with the output end of the motor through the third bolt.
Furthermore, wet-type mechanical brake system includes brake lever and clamp plate, the brake lever top corresponds the contact through the break pin with the clamp plate side, and clamp plate another side corresponds is provided with a plurality of steel sheets and friction disc, and a plurality of steel sheets correspond the setting with a plurality of friction discs are crisscross, the braking frame outer lane passes through the spline and meshes with the friction disc.
Furthermore, a convex rod which is correspondingly matched with one side surface of the cover plate is arranged on the side surface of the bottom end of the brake rod, a compression spring structure which is correspondingly connected with the inner side end of the convex rod is arranged in the brake rod, an oil inlet hole is formed in the surface of the brake rod, and the interior of the oil inlet hole corresponds to the compression spring structure.
Furthermore, the secondary speed reduction comprises a sun wheel shaft, an inner hole of the brake frame is meshed with the inner side end of the sun wheel shaft through a spline, three planet wheels are correspondingly arranged on the outer side of the sun wheel shaft, and the sun wheel shaft is meshed with the planet wheels.
Furthermore, the planet wheel outside is provided with fixed gear ring, and fixed gear ring one side correspondence is provided with the planet carrier, fixed gear ring installs on the casing, and planet carrier circumference lateral surface passes through the spline and meshes with the shaft, the shaft passes through second bearing and third bearing support on the casing, and the planet wheel utilizes three fourth bearing to fix on the planet carrier.
Further, the shell and the wheel shaft are sealed through oil seals.
Furthermore, the two-stage speed reduction device further comprises a thrust bearing seat and a fifth bearing, the steel sheet is fixed on the groove of the thrust bearing seat through a convex claw, one end of the brake frame is positioned through a spigot and fixed on the driven gear through a second bolt, and the other end of the brake frame is supported on the thrust bearing seat through the fifth bearing.
The invention has the technical effects and advantages that:
1. the invention is more convenient and saves time in the aspects of the assembly and disassembly of the whole machine through the independent double-drive system; in addition, a circulating cooling water pipe is additionally arranged in the shell to cool a primary speed reduction system, a secondary speed reduction system and a wet mechanical braking system, so that the problem of internal overheating during high-strength operation of the large-tonnage forklift is avoided, the stability of transmission and braking is improved, and the fatigue life of a product is ensured; meanwhile, by designing the brake rod with the compression spring structure, the negative brake function of the vehicle is realized, so that the vehicle is safer and more reliable during operation; through adopting aluminium alloy's casing and apron for actuating system is lighter, has improved the energy consumption of vehicle.
2. The reduction gearbox realizes high efficiency and low noise through primary reduction transmission and secondary reduction transmission, and simultaneously realizes the integration design of wet mechanical braking; meanwhile, through the design of increasing or reducing friction plates, the braking requirements of electric forklifts with different tonnages are met, the universal design of wet mechanical braking parts such as a brake rod and a pressing plate is realized, and the purpose of saving cost is achieved.
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 embodiments or the description of 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 other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 shows a power transmission diagram of an electric fork lift truck drive system of an embodiment of the present invention;
FIG. 2 shows a partial cross-sectional view of an electric fork lift truck drive system of an embodiment of the present invention;
figure 3 shows perspective view one of the electric fork lift truck drive system of an embodiment of the present invention;
FIG. 4 is a schematic view showing the overall structure of a cooling water pipe according to an embodiment of the present invention;
figure 5 shows an isometric view two of the electric fork lift truck drive system of an embodiment of the present invention;
FIG. 6 is an isometric view showing the mating of the thrust bearing blocks and steel plates of an embodiment of the invention;
in the figure: 1. a reduction gearbox; 111. a cover plate; 112. a housing; 113. a first bolt; 114. oil sealing; 12. a wet mechanical brake system; 121. a brake lever; 122. pressing a plate; 123. a steel sheet; 124. a friction plate; 13. first-stage deceleration; 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; 16. a cooling water pipe; 2. an electric motor.
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 reduction gearbox 1 and a motor 2, wherein the output end of the motor 2 is connected with the reduction gearbox 1, the reduction gearbox 1 comprises a wet type mechanical braking system 12, a primary speed reduction 13 and a secondary speed reduction 14, the wet type mechanical braking system 12 is positioned between the primary speed reduction 13 and the secondary speed reduction 14, the reduction gearbox 1 further comprises a wheel shaft 15, the wheel shaft 15 is correspondingly sleeved at the outer side end of the secondary speed reduction 14, and the wheel shaft 15 is connected with wheels by a plurality of screws. The power of the motor 2 is transmitted to the wheels through the primary speed reduction 13, the wet type mechanical braking system 12 and the secondary speed reduction 14, so that the wheels can drive the electric forklift to move conveniently.
In fig. 2-4, the reduction gearbox 1 further includes a cover plate 111, a housing 112 and a cooling water pipe 16, one side surface of the cover plate 111 corresponds to the output end of the motor 2, the cover plate 111 and the housing 112 are fixed by bolts, an inlet and an outlet of the cooling water pipe 16 extend out of the housing 112 through two holes on the housing 112, the cooling water pipe 16 is connected with a water pump through the inlet and the outlet, and the reduction gearbox 1 is connected with the motor 2 by a plurality of first bolts 113. The cooling water pipe 16 is arranged between the wet type mechanical braking system 12 and the primary speed reducer 13 and is fixed on the shell 112, the inlet and the outlet of the cooling water pipe 16 extend out of the shell 112 through two holes on the shell 112 and are connected with an external water pump to form a circulating water cooling system, and the circulating water cooling system cools a transmission system and a braking system in the reduction gearbox 1.
In fig. 2, the primary speed reducer 13 includes a driving gear shaft 131, the reduction box 1 is axially matched with the motor 2 through the driving gear shaft 131, the circumferential side surface of the driving gear shaft 131 is engaged with the driven gear 132, the second bolt 133 penetrates through the brake frame 134, the brake frame 134 is fixedly connected with the driven gear 132 through the second bolt 133, the primary speed reducer 13 is supported on the cover plate 111 through the first bearing 135, and the center of the driving gear shaft 131 is fixed with the output end of the motor 2 through the third bolt 136. The secondary speed reduction 14 comprises a sun wheel shaft 141, the brake carrier 134 is arranged in a coupling structure, an inner hole of the brake carrier 134 is meshed with the inner side end of the sun wheel shaft 141 through a spline, three planet wheels 142 are correspondingly arranged on the outer side of the sun wheel shaft 141, and the sun wheel shaft 141 is meshed with the planet wheels 142. The outer side of the planet wheel 142 is provided with a fixed gear ring 143, one side of the fixed gear ring 143 is correspondingly provided with a planet carrier 144, the fixed gear ring 143 is installed on the casing 112, the circumferential outer side surface of the planet carrier 144 is meshed with the wheel shaft 15 through a spline, the wheel shaft 15 is supported on the casing 112 through a second bearing 145 and a third bearing 146, and the planet wheel 142 is fixed on the planet carrier 144 through three fourth bearings 147. The third bolt 136 installs the drive gear shaft 131 center to the output end of the motor 2, the motor 2 drives the driven gear 132 to rotate through the drive gear shaft 131, the driven gear 132 drives the sun gear shaft 141 to rotate through the brake frame 134, the sun gear shaft 141 drives the wheel to rotate by using the planet carrier 144 and the wheel shaft 15, and the power of the motor 2 is transmitted to the wheel.
In fig. 2, 3 and 5, the wet mechanical brake system 12 includes a brake lever 121 and a pressure plate 122, a top end of the brake lever 121 is correspondingly contacted with a side surface of the pressure plate 122 through a brake pin, a plurality of steel sheets 123 and friction sheets 124 are correspondingly arranged on the other side surface of the pressure plate 122, the plurality of steel sheets 123 and the plurality of friction sheets 124 are correspondingly staggered, and an outer ring of the brake frame 134 is meshed with the friction sheets 124 through a spline. A protruding rod correspondingly matched with one side surface of the cover plate 111 is arranged on the side surface of the bottom end of the brake rod 121, a compression spring structure correspondingly connected with the inner side end of the protruding rod is arranged in the brake rod 121, an oil inlet hole is formed in the surface of the brake rod 121, and the interior of the oil inlet hole corresponds to the compression spring structure. When the vehicle system stops working, the compression spring structure utilizes the convex rod to contact with the cover plate 111 so as to push the brake rod 121 to tilt, the brake rod 121 pushes the brake pin to utilize the pressing plate 122 to press the steel sheet 123 and the friction sheet 124, and a negative braking function is realized; when the vehicle starts to operate, the brake oil enters the inner cavity of the brake rod 121 through the oil inlet hole on the brake rod 121 to extrude the compression spring structure, so that the thrust of the compression spring structure acting on the convex rod of the brake rod 121 is eliminated, the braking state is released, and the vehicle can normally operate.
The brake rod 121 is arranged at the bottom of the cover plate 111, interference with a front end cover of the motor 2 is reduced, the length of the motor 2 can be reduced by increasing the diameter of the motor 2, the overall length of a driving system is reduced, and the width of the whole vehicle is reduced.
In fig. 2, the housing 112 is sealed from the axle 15 by an oil seal 114. Oil is sealed in the cavity, so that oil lubrication of the second bearing 145 and the third bearing 146 is realized.
In fig. 2 and 6, the two-stage reduction gear 14 further comprises a thrust bearing seat 148 and a fifth bearing 149, the steel plate 123 is fixed on the notch of the thrust bearing seat 148 through a convex claw, one end of the brake frame 134 is positioned through a spigot and fixed on the driven gear 132 through the second bolt 133, and the other end of the brake frame 134 is supported on the thrust bearing seat 148 through the fifth bearing 149. The side surface of the thrust bearing seat 148 is correspondingly jointed with the planet carrier 144.
The working principle of the invention is as follows:
referring to the attached drawings 1-6 of the specification, the reduction gearbox 1 realizes high efficiency and low noise through primary speed reduction 13 transmission and secondary speed reduction 14 transmission, 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, the independent double-drive system is more convenient and saves time in the aspects of assembly and disassembly of the whole machine. In addition, a circulating cooling water pipe 16 is additionally arranged in the shell 112 to cool the primary speed reducer 13, the secondary speed reducer 14 and the wet mechanical brake system 12, so that the problem of internal overheating during high-strength operation of a large-tonnage forklift is avoided, the stability of transmission and braking is improved, and the fatigue life of a product is ensured; meanwhile, the negative braking function of the vehicle is realized by designing the brake rod 121 with a compression spring structure, so that the vehicle is safer and more reliable in operation; by adopting the shell 112 and the cover plate 111 made of aluminum alloy materials, the driving system is lighter and lighter, and the energy consumption of the vehicle is improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it should 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 (9)
1. An electric forklift drive system, characterized in that: including reducing gear box (1) and motor (2), motor (2) output is connected with reducing gear box (1), reducing gear box (1) includes wet-type mechanical braking system (12), one-level speed reduction (13) and second grade speed reduction (14), and wet-type mechanical braking system (12) are in between one-level speed reduction (13) and second grade speed reduction (14), reducing gear box (1) still includes shaft (15), and shaft (15) cup joint in second grade speed reduction (14) outside end correspondingly, and shaft (15) utilize a plurality of screws and wheel connection.
2. The electric forklift drive system according to claim 1, characterized in that:
the reduction gearbox (1) further comprises a cover plate (111), a shell (112) and a cooling water pipe (16), one side face of the cover plate (111) corresponds to the output end of the motor (2), the cover plate (111) is fixedly connected with the shell (112) through bolts, the inlet and the outlet of the cooling water pipe (16) extend out of the shell (112) through two holes in the shell (112), the cooling water pipe (16) is connected with a water pump through the inlet and the outlet, and the reduction gearbox (1) is connected with the motor (2) through a plurality of first bolts 113.
3. The electric forklift drive system according to claim 2, characterized in that:
the one-stage speed reduction device is characterized in that the one-stage speed reduction (13) comprises a driving gear shaft (131), the reduction gearbox (1) is matched with the motor (2) through the driving gear shaft (131), the circumferential side surface of the driving gear shaft (131) is meshed with the driven gear (132), the second bolt (133) penetrates through the brake frame (134), the brake frame (134) is fixedly connected with the driven gear (132) through the second bolt (133), the one-stage speed reduction (13) is supported on the cover plate (111) through the first bearing (135), and the center of the driving gear shaft (131) is fixed with the output end of the motor (2) through the third bolt (136).
4. The electric forklift drive system according to claim 3, characterized in that:
the wet mechanical braking system (12) comprises a brake rod (121) and a pressing plate (122), the top end of the brake rod (121) is correspondingly contacted with the side face of the pressing plate (122) through a brake pin, the other side face of the pressing plate (122) is correspondingly provided with a plurality of steel sheets (123) and friction sheets (124), the steel sheets (123) and the friction sheets (124) are arranged in a staggered and corresponding mode, and the outer ring of a brake frame (134) is meshed with the friction sheets (124) through splines.
5. The electric forklift drive system according to claim 3, characterized in that:
the side face of the bottom end of the brake rod (121) is provided with a convex rod correspondingly matched with one side face of the cover plate (111), a compression spring structure correspondingly connected with the inner side end of the convex rod is arranged inside the brake rod (121), an oil inlet hole is formed in the surface of the brake rod (121), and the inside of the oil inlet hole corresponds to the compression spring structure.
6. The electric forklift drive system according to claim 4, characterized in that:
the secondary speed reduction (14) comprises a sun wheel shaft (141), an inner hole of the brake frame (134) is meshed with the inner side end of the sun wheel shaft (141) through a spline, three planet wheels (142) are correspondingly arranged on the outer side of the sun wheel shaft (141), and the sun wheel shaft (141) is meshed with the planet wheels (142).
7. The electric forklift drive system according to claim 6, characterized in that:
the outer side of the planet wheel (142) is provided with a fixed gear ring (143), one side of the fixed gear ring (143) is correspondingly provided with a planet carrier (144), the fixed gear ring (143) is installed on the shell (112), the outer side surface of the circumference of the planet carrier (144) is meshed with the wheel shaft (15) through a spline, the wheel shaft (15) is supported on the shell (112) through a second bearing (145) and a third bearing (146), and the planet wheel (142) is fixed on the planet carrier (144) through three fourth bearings (147).
8. The electric forklift drive system according to claim 7, characterized in that:
the shell (112) and the wheel shaft (15) are sealed through an oil seal (114).
9. The electric forklift drive system according to claim 7, wherein:
the two-stage speed reducer (14) further comprises a thrust bearing seat (148) and a fifth bearing (149), the steel sheet (123) is fixed on a groove of the thrust bearing seat (148) through a convex claw, one end of the brake frame (134) is positioned through a spigot and fixed on the driven gear (132) through a second bolt (133), and the other end of the brake frame (134) is supported on the thrust bearing seat (148) through the fifth bearing (149).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210632636.2A CN115215265A (en) | 2022-06-07 | 2022-06-07 | Electric forklift driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210632636.2A CN115215265A (en) | 2022-06-07 | 2022-06-07 | Electric forklift driving system |
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| Publication Number | Publication Date |
|---|---|
| CN115215265A true CN115215265A (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210632636.2A Pending CN115215265A (en) | 2022-06-07 | 2022-06-07 | Electric forklift driving system |
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| CN (1) | CN115215265A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030070862A1 (en) * | 2000-04-21 | 2003-04-17 | Giampiero Tartara | Forklift truck with reduced turning radius |
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| CN103481730A (en) * | 2013-09-11 | 2014-01-01 | 龙工（上海）叉车有限公司 | Multifunctional wet axle of rear-driven electric forklift |
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Application publication date: 20221021 |