CN109292682A - Power assisted manual fork truck based on lever principle - Google Patents
Power assisted manual fork truck based on lever principle Download PDFInfo
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- CN109292682A CN109292682A CN201811117524.3A CN201811117524A CN109292682A CN 109292682 A CN109292682 A CN 109292682A CN 201811117524 A CN201811117524 A CN 201811117524A CN 109292682 A CN109292682 A CN 109292682A
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- arm
- large arm
- fork truck
- pedestal
- lever principle
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000000694 effects Effects 0.000 claims abstract description 17
- 235000004443 Ricinus communis Nutrition 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 17
- 239000010720 hydraulic oil Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 13
- 230000003068 static effect Effects 0.000 description 13
- 239000002184 metal Substances 0.000 description 11
- 238000009434 installation Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- B66F9/065—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 non-masted
- B66F9/0655—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 non-masted with a telescopic boom
-
- 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
-
- 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
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
-
- 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
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a kind of power assisted manual fork truck based on lever principle, including forklift frame, for holding the pallet fork of cargo and the linear controller being set on forklift frame, forklift frame includes pedestal, the wheel being set on pedestal, the large arm being set on pedestal and the lifting arm with large arm rotation connection, the pallet fork is set on lifting arm, large arm includes the large arm arm body connecting with pedestal, it is connect with large arm arm body and the bracket being located at below large arm arm body and the castor that is set on bracket, parallel two are arranged in large arm arm body, linear actuator is located between two large arm arm bodies and linear actuator is connect with pedestal and lifting arm.The present invention is based on the power assisted manual fork trucks of lever principle, using wheel as fulcrum, labour-saving effect is reached using lever principle, use is light, and processing and manufacturing is easy, fork truck movement is convenient, flexible, it is highly-safe, and efficient work, it is applied widely, with preferable transporting capacity, labor intensity is effectively reduced.
Description
Technical field
The invention belongs to the invention belongs to the fork truck technical fields of cargo transfer, it is more particularly related to a kind of
Power assisted manual fork truck based on lever principle.
Background technique
Fork truck is industrial transportation vehicle, refer to pallet cargo is loaded and unloaded, stacking and short distance transportation operation
Various wheeled transport vehicles.Fork truck plays very important role in the logistics system of enterprise, is in material conveyance equipment
Main force.The each department being widely used in the national economy such as station, harbour, airport, factory, warehouse.Second of the world
During Great War, fork truck is developed.China manufactures fork truck since at the beginning of the 50's of 20th century.In particular with China's economic
The material carrying of fast development, most of enterprise has had been detached from original manual handling, instead based on fork truck
Conveyorization.However, often volume is heavy for large-scale fork truck, professional operator is needed, operates and also needs especially
Carefully, the cargo of carrying is not paid attention to break slightly, and in some workplace narrow spaces, fork truck cannot reach or cannot
Normal operating.Thus, such issues that solve there is very strong realistic meaning by invention novel forklift.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention provides a kind of base
In the power assisted manual fork truck of lever principle.
To achieve the goals above, the technical scheme adopted by the invention is as follows: the power assisted manual fork truck based on lever principle, packet
Including forklift frame, the pallet fork for holding cargo and the linear controller being set on the forklift frame, forklift frame includes
Pedestal, the wheel being set on pedestal, the large arm being set on pedestal and the lifting arm with large arm rotation connection, the pallet fork are set
It is placed on lifting arm, large arm includes the large arm arm body connecting with pedestal, connect and be located at below large arm arm body with large arm arm body
Parallel two are arranged in bracket and the castor being set on bracket, large arm arm body, and linear actuator is located at two large arm arm bodies
Between and linear actuator connect with pedestal and lifting arm.
For the large arm arm as the strip rod piece of inner hollow, the lifting arm is between two large arm arm bodies and rises
The one end for dropping arm and two large arm arm bodies is rotatablely connected, and the other end of two large arm arm bodies is connect with the tube chamber welds with base.
The bracket is arranged two, and two brackets are fixedly connected respectively at a large arm arm body, divides on each bracket
It She Zhi not a castor.
The large arm further includes the handle being set to the large arm arm, and handle mounting groove is equipped with large arm arm.
The linear actuator includes the power source being set on the pedestal and connects with power source and the lifting arm
It connects and is telescopic telescopic rod.
The pallet fork includes L-shaped body crotch and the interconnecting piece that connect with the lifting arm, and main body crotch is arranged two,
Connecting portion is fixedly connected between two main body crotch and with two main body crotch.
The main body crotch includes the vertical component effect and horizontal part being connected, and the interconnecting piece is fixedly connected with vertical component effect.
The present invention is based on the power assisted manual fork trucks of lever principle, using wheel as fulcrum, have reached laborsaving using lever principle
Effect, structure is simple, and use is light, and processing and manufacturing is easy, and fork truck movement is convenient, flexible, highly-safe, and efficient work,
It is applied widely, there is preferable transporting capacity, effectively reduce labor intensity, targetedly solve large-scale fork truck not
The occasion of suitable services, can be widely applied to daily life and field of industrial production.
Detailed description of the invention
This specification includes the following drawings, and shown content is respectively:
Fig. 1 is the structural schematic diagram of power assisted manual fork truck of the present invention；
Fig. 2 is the side view of power assisted manual fork truck of the present invention；
Fig. 3 is the structural schematic diagram of pedestal；
Fig. 4 a is the structural schematic diagram on the outside of large arm；
Fig. 4 b is the structural schematic diagram on the inside of large arm；
Fig. 5 a is the structural schematic diagram of lifting arm；
Fig. 5 b is the structural schematic diagram of lifting arm bottom surface；
Fig. 6 a is left handle and the structural schematic diagram that raising switchs；
Fig. 6 b is the structural schematic diagram of right handles and landing switch；
Fig. 7 is the structural schematic diagram of linear actuator；
Fig. 8 is the structural schematic diagram of pallet fork.
Fig. 9 is the structural schematic diagram of foot wheel carrier；
Figure 10 is the hydraulic control system schematic diagram of jacking system；
Figure 11 is 3-position-3-way solenoid directional control valve working principle diagram；
Figure 12 is that raising switchs and the circuit diagram switched that lands；
Figure 13 is the structural schematic diagram of raising switch；
Figure 14 is the structural schematic diagram of landing switch；
In the figure, it is marked as 1, wheel；2, large arm arm body；201, handle mounting groove；202, lifting arm mounting shaft hole；3, foot
Wheel；302, supporting leg；303, mounting plate；304, limit plate；307, fastening screw；308, nut；4, linear actuator；401, power
Source；402, telescopic rod；403, actuator mounting shaft hole；5, lifting arm；501, lifting arm arm body；502, lifting arm installation axle；
503, telescopic rod mounting groove；6, handle；7, pallet fork；701, interconnecting piece；702, vertical component effect；703, horizontal part；8, pedestal；801,
Wheel shaft；802, actuator installation axle；9, raising switchs；901, button cap；902, reset spring is switched；903, moving contact；904,
Static contact；10, landing switch；1001, button cap；1002, reset spring is switched；1003, moving contact；1004, static contact；11,
Bracket；12, hydraulic system；1201, oil pump；1202, throttle valve；1203, reversal valve；12031, reset spring；12032, valve
Body；12033, magnet；12034, spool；12035, first coil；12036, conducting wire；12037, the second coil；1204, hydraulic
Fuel tank；1205, overflow valve；1206, check valve；13, battery.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to design of the invention, technical solution
Solution, and facilitate its implementation.
As shown in Figures 1 to 8, the present invention provides a kind of power assisted manual fork truck based on lever principle, including fork truck vehicle
Frame, the pallet fork 7 for holding cargo and the linear controller being set on forklift frame, forklift frame include pedestal, are set to
Wheel, the large arm being set on pedestal and the lifting arm being rotatablely connected with large arm, pallet fork 7 on pedestal are set on lifting arm,
Large arm includes the large arm arm body connecting with pedestal, the bracket for connecting and being located at below large arm arm body with large arm arm body and is set to branch
Parallel two are arranged in castor on frame, large arm arm body, and linear actuator is located between two large arm arm bodies and linear execution
Device is connect with pedestal and lifting arm.In use, staff holds handle, fork truck is pushed, so that pallet fork 7 is forked cargo, presses control
The raising of switch control lifting arm processed pushes fork truck to advance, cargo is carried to conjunction when cargo is lifted to suitable height
Right position is set, and control switch is pressed, and puts down cargo, extracts fork truck out, is completed cargo and is carried.
Specifically, as shown in Figure 1 to Figure 3, wheel 1 is mounted on the bottom of pedestal 8, the setting of wheel 1 two by wheel shaft 801
A, the rotation centerline of wheel 1 is located in horizontal plane, and wheel 1 is rotatable relative to pedestal 8, when power assisted manual fork truck is mobile,
Wheel 1 can be along ground surface.Linear actuator 4 is mounted on pedestal 8 by actuator installation axle 802, and linear actuator 4 is
Telescopic structure, linear actuator 4 are rotated up and down for controlling lifting arm 5, and then realize the elevating control of pallet fork 7,
Realize the lifting of cargo.Lifting arm 5 is located at the top of pedestal 8, and one end of lifting arm 5 and large arm are rotatablely connected, and pallet fork 7 is set to
The other end of lifting arm 5, the rotation centerline of lifting arm 5 is located in horizontal plane and the rotation centerline of lifting arm 5 and wheel 1
Rotation centerline is parallel.
As shown in Figure 1, Figure 2, shown in Fig. 4 a and Fig. 4 b, large arm arm body 2 is the strip rod piece of inner hollow, two large arm arm bodies
There is a certain distance between 2, lifting arm 5 be located between two large arm arm bodies 2 and lifting arm 5 and two large arm arm bodies 2 one
End rotation connection, the other end and pedestal 8 of two large arm arm bodies 2 are welded to connect.Large arm is by two hollow strip rod piece groups
At the hollow cavity of large arm arm body 2 can be used for line arrangement, and the bottom of two rod pieces and the same plane of pedestal 8 are welded on one
It rises, but retains certain space between two large arm arm bodies 2, for installing linear actuator 4.Large arm further includes being set to large arm
Handle 6 on arm body 2, large arm arm body 2 are equipped with handle mounting groove 201.One is installed respectively on the outside of the head of each large arm arm body 2
A handle 6, handle 6 are mounted with control switch, control switch is for controlling linear actuator 4 for operating fork truck on handle 6
Work.
As shown in Figure 1, Figure 2, shown in Fig. 4 a and Fig. 4 b, bracket 11 is matched with castor 3, plays the role of Auxiliary support to large arm,
Bracket 11 is arranged two, and two brackets 11 are fixedly connected respectively at a large arm arm body 2, are respectively set one on each bracket 11
Castor 3.Bracket 11 extends towards the lower section of large arm arm body 2, and the upper end of bracket 11 is fixedly connected with large arm arm body 2, bracket 11
Position is located between the both ends of large arm arm body 2, and castor 3 is mounted on the lower end of bracket 11.When pushing power assisted manual fork truck mobile,
Castor 3 can reach labour-saving effect along ground surface.
As shown in Figure 1, Figure 2 and shown in Fig. 9, castor 3 is preferably universal wheel, and convenient for pushing fork truck integrally to be moved, castor 3 is wrapped
Foot wheel carrier and the roller body with foot wheel carrier rotation connection are included, roller body is cylindrical body, and roller body is by shaft and foot
The axis of wheel carrier rotation connection and the shaft is located in horizontal plane, has the axis hole for allowing shaft to pass through at the center of roller body,
Roller body and shaft are coaxial arrangement, the periphery of roller body be for ground face contact, when fork truck is mobile, roller body
Along ground surface.Foot wheel carrier is fixedly connected with the lower end of bracket 11 and foot wheel carrier is mounted on the lower end of bracket 11 by bolt,
Foot wheel carrier includes two supporting legs being oppositely arranged 302, is fixedly connected with two supporting legs 302 limit plate 304 is located at limit plate
304 top mounting plate 303, fastening screw 307, nut 308, upper bearing (metal) and lower bearing, mounting plate 303 be by bolt with
Bracket 11 is attached, and the upper end of supporting leg 302 is fixedly connected with limit plate 304, and the lower end of supporting leg 302, which is equipped with, allows shaft to pass through
Through-hole, roller body is located between two supporting legs 302, and roller body is mounted on two supporting legs 302 by shaft, idler wheel sheet
Body and the lower section for being located at limit plate 304.Mounting plate 303 is to be threadedly coupled with fastening screw 307, is had at the center of mounting plate 303
Have the internal thread hole for allowing fastening screw 307 to pass through, the internal thread hole and on mounting plate 303 along plate thickness direction through setting
The axis of through-hole, the internal thread hole is located in vertical plane.Have allow fastening screw 307 to pass through to lead at the center of limit plate 304
Hole, the through-hole are that the internal thread hole on circular hole and the through-hole and mounting plate 303 is coaxial aperture.Upper bearing (metal) be clipped in mounting plate 303 with
Between limit plate 304, upper bearing (metal) is thrust ball bearing, to bear axial load.The top of limit plate 304, which has, accommodates upper bearing (metal)
Upper accommodating cavity, upper accommodating cavity is that circular cavity and upper accommodating cavity are the downwardly limit plate since the top surface of limit plate 304
What 304 internal stretch was formed, the diameter of upper accommodating cavity and the overall diameter size of upper bearing (metal) are identical, and upper bearing (metal) is not easy to fall off.
Fastening screw 307 is hex head screw, and fastening screw 307 includes the hexagon-head being connected and threaded shank, hexagon-head six
Side shape structure, threaded shank are that outer surface is equipped with externally threaded rod-like structure, and one end of threaded shank is at the center of hexagon-head
It being fixedly connected with hexagon-head, threaded shank is inserted into the internal thread hole on mounting plate 303 after passing through the through-hole on limit plate 304,
Threaded shank is to be threadedly coupled with mounting plate 303.Lower bearing sleeve is set in the threaded shank of fastening screw 307 and lower bearing is clipped in limit
Between position plate 304 and the hexagon-head of fastening screw 307, lower bearing is thrust ball bearing, to bear axial load.Limit plate
304 bottom has the lower accommodating cavity for accommodating lower bearing, and lower accommodating cavity is circular cavity and lower accommodating cavity is from limit plate 304
What bottom surface started to be formed upwardly toward the internal stretch of limit plate 304, the overall diameter of lower bearing is less than the overall diameter of upper bearing (metal), under
The interior diameter of bearing is less than the external diameter of a circle of the hexagon-head of fastening screw 307, the diameter of lower accommodating cavity and lower bearing
Overall diameter size is identical, and lower bearing is not easy to fall off, good reliability, so that the bearing capacity of castor 3 is stronger.Fastening screw 307
Hexagon-head be located at the top of roller body, the overall diameter of lower bearing be greater than be arranged on limit plate 304 allow threaded shank to pass through
Through-hole diameter, between mounting plate 303 and limit plate 304 have gap, enable limit plate 304 relative to mounting plate 303
Enough rotations, realize the steering of roller body.Upper bearing (metal), lower bearing and fastening screw 307 are to be coaxially disposed, fastening screw 307
In the middle position of two supporting legs 302.The top surface of mounting plate 303 is equipped with the groove for accommodating nut 308, which is circle
Connected in star, nut 308 is sheathed in the threaded shank of fastening screw 307 and nut 308 and threaded shank are to be threadedly coupled, nut 308
And with threaded shank be welded to connect.Fastening screw 307 and nut 308 are tightened again after fixing, by nut 308 and fastening screw
307 weld together, and nut 308 keeps relatively fixed with fastening screw 307, and fastening screw 307 and nut 308 clamp limit plate
304, upper bearing (metal), limit plate 304 and lower bearing form integral structure；And mounting plate 303 and fastening screw 307 are screw thread company
It connects, attaching nut 308, forms the effect for being similar to double nut, while nut 308 is welded and fixed with fastening screw 307, nut
308 are no longer able to rotate, and prevent screw and nut 308 from loosening and associated components is caused to fall off, provide safe fixed effect,
Castor 3 is enabled to provide stable movement when fork truck is mobile.
As shown in Figure 1, Figure 2, shown in Fig. 5 a and Fig. 5 b, lifting arm 5 includes 502 He of lifting arm arm body 501 and lifting arm installation axle
Telescopic rod mounting groove 503.One end of lifting arm arm body 501 is arranged in lifting arm installation axle 502, and pallet fork 7 is set to lifting arm arm
The other end of body 501, lifting arm arm body 501 are located between two large arm arm bodies 2, and lifting arm arm body 501 is installed by lifting arm
Axis 502 and two large arm arm bodies 2 are rotatablely connected, and large arm arm body 2 has the lifting arm installation axle for allowing lifting arm installation axle 502 to be inserted into
502 holes 202.Lifting arm arm body 501 is connect with linear actuator 4, and lifting arm arm body 501, which is equipped with, allows the stretching of linear actuator 4
The stretching motion of the telescopic rod mounting groove 503 of the upper end insertion of contracting bar 402, telescopic rod 402 will drive lifting arm to pacify around lifting arm
Dress axis 502 makes rotating motion, and realizes the lifting of pallet fork 7.
As shown in Figure 1, Figure 2, shown in Fig. 6 a and Fig. 6 b, handle 6 is the position that hand is held when people operates fork truck, the setting of handle 6 two
A, each handle 6 is respectively arranged on a large arm arm body 2.Control switch is installed on handle 6, and control switch equally has two
A, two control switches are respectively raising switch 9 and landing switch 10, and raising switch 9 is disposed therein on a handle 6, are dropped
It falls switch 10 to be set on another handle 6, raising switch 9 is extended for controlling linear actuator 4, and landing switch 10 is used
It is shunk in control linear actuator 4.
As shown in Figure 1, Figure 2 and Figure 7, linear actuator 4 includes the power source 401 and and power being set on pedestal 8
The telescopic rod 402 that source 401 is connected with lifting arm.Power source 401 is mounted on pedestal 8 by actuator installation axle 802, power
Source 401 has the actuator mounting shaft hole for allowing actuator installation axle 802 to pass through.The lower end of telescopic rod 402 and power source 401 connect
It connects, the upper end of telescopic rod 402 is connect by pin shaft with lifting arm arm body 501.Power source 401 is designed as surging, and is telescopic rod 402
For power, power source 401 controls telescopic rod 402 and circumferentially does straight reciprocating motion, and the lifting arm being attached thereto moves therewith.
Power source 401 is hydraulic cylinder, and the cylinder body of power source 401 is mounted on the base, the piston rod and telescopic rod 402 of power source 401
Connection.
It as shown in Figure 10, is the schematic diagram for the hydraulic system 12 being connected with power source 401, wherein a show raised bench
The working condition of section hydraulic system 12, b show the working condition of quiescent phase hydraulic system 12, and c show decline stage liquid
The working condition of pressure system 12.The hydraulic system 12 is mainly by throttle valve 1202, reversal valve 1203, hydraulic oil container 1204, overflows
Flow the composition such as valve 1205, check valve 1206 and oil pump 1201.When power source 401 pushes telescopic rod 401 to rise, hydraulic system 12
Working condition as shown in a in figure, adjustable change valve 1203,1201 pipeline of oil pump by check valve 1206 connect power source
401, the circuit disconnection of power source 401 and hydraulic oil container 1204, oil pump 1201 continually gives 401 pump oil of power source, and promotion is stretched
Contracting bar 401 moves upwards, and realizes cargo lifting.When telescopic rod 401 is static, the working condition such as b institute in figure of hydraulic system 12
Show, by reversal valve 1203, oil pump 1201 is directly formed into a loop with hydraulic oil container 1204, can not be given 401 pump oil of power source, be moved
Power source 401 and the circuit of hydraulic oil container 1204 disconnect, and along with the presence of check valve 1206, the hydraulic oil of power source 401 cannot
Hydraulic oil container 1204 is flowed back to, so that telescopic rod 402 remains static.When power source 401 pulls telescopic rod 401 to decline, liquid
The working condition of pressure system 12 is as shown in c in figure, adjustable change valve 1203, and the oil circuit of power source 401 is made to connect hydraulic oil container
1204, oil pump 1206 and hydraulic oil container 1204 are formed into a loop, and the hydraulic oil of power source 401 directly flows back to hydraulic oil container 1204, real
The decline of existing telescopic rod 401.The reversal valve 1203 is preferably 3-position-3-way solenoid directional control valve, by controlling 9 He of raising switch
The switch 10 that lands realizes the commutation of reversal valve 1203, changes the working condition of hydraulic system 12, realizes the lifting of telescopic rod 401.
The structure of 3-position-3-way solenoid directional control valve as well known in the skilled person, such as Figure 11 and Figure 12 institute
Show, reversal valve 1203 includes valve body 12032, spool 12034, two reset springs 12031, magnet 12033, first coil
12035, the second coil 12037, conducting wire 12036.Raising switch 9 by conducting wire 12036 respectively with battery 13 and first coil
12035 connections, landing switch 10 are connect with battery 13 and the second coil 12037 respectively by conducting wire 12036, raising switch
9, landing switch 10 controls the on-off of two coil currents in left and right respectively.Battery 13 is mounted on pedestal 8, and battery 13 is used for
It is powered to first coil 12035 and the second coil 12037.Two coil connecting leads of battery 12037 and left and right
Raising switch 9, landing switch 10, the on-off for control circuit are in series among 12036 respectively.To reversal valve working principle
Exemplary description is as follows: pressing raising switch 9, first coil 12035 is powered, according to the law of electromagnetic induction, first coil 12035
Zone of action movable valve plug 12034 by magnetic field force is moved to the left, and the left mouth on valve body 12032 is plugged, and You Kou is connected to middle mouth,
Oil pump 1206 gives 401 pump oil of power source, and telescopic rod 402 does ascending motion.Landing switch 10 is pressed, the second coil 12037 is powered,
According to the law of electromagnetic induction, the second coil 12037 is moved right by the zone of action movable valve plug 12034 of magnetic field force, valve body 12032
Right mouth be plugged, Zuo Kou is connected to middle mouth, oil pump 1206 can not give 401 pump oil of power source, the hydraulic oil stream of power source 401
Hydraulic oil container 1204 is returned, telescopic rod 402 does descending motion.When raising switch 9, landing switch 10 are not all pressed, reversal valve
It is not powered, spool 12034 is in middle mouth under the action of reset spring 12031, and reversal valve is in close state, power source
401 hydraulic oil can not flow back to hydraulic oil container 1204, and telescopic rod 402 remains static.
As shown in figure 13, raising switch 9 is substantially hilted broadsword list and sets switch, and structure is such as those skilled in the art, master
It to include button cap 901, switch reset spring 902, moving contact 903 and two static contacts 904.The static contact 904 be with
Magnetic elastic sheet metal, when pressing button cap 901, moving contact 903 is contacted with two static contacts 904, and moving contact 903 is by stationary contact
First 904 magnetic attracting, the circuit between battery and first coil 12035 are connected；Button cap 901 is pressed again, makes to switch
The elastic restoring force that 902 deformation of reset spring generates is greater than magnetic attracting force suffered by moving contact 903, in switch reset spring
Under 902 resilient forces generated, button cap 901 resets, and moving contact 903 is separated with two static contacts 904, circuit cut-off.Such as
Shown in Figure 14, landing switch 10 is substantially hilted broadsword list and sets switch, and structure mainly includes button such as those skilled in the art
Cap 1001, switch reset spring 1002, moving contact 1003 and two static contacts 1004.The static contact 1004 is with magnetic
Elastic sheet metal, when pressing button cap 1001, moving contact 1003 is contacted with two static contacts 1004, and moving contact 1003 is by stationary contact
First 1004 magnetic attracting, the circuit between battery and the second coil 12037 are connected；Button cap 1001 is pressed again, is made out
It closes the elastic restoring force that 1002 deformation of reset spring generates and is greater than magnetic attracting force suffered by moving contact 1003, reset bullet in switch
Under the resilient force that spring 1002 generates, button cap 1001 resets, and moving contact 1003 is separated with two static contacts 1004, circuit
Cut-off.Carry out the on-off of control circuit with this, thus the power on/off of two coils of control, and then control the work shape of reversal valve 1203
State switching, the final movement of rising and falling for realizing telescopic rod 402 drive cargo rising or decline.
As shown in fig. 1, fig. 2 and fig. 8, pallet fork 7 includes L-shaped body crotch and the interconnecting piece 701 connecting with lifting arm, main
Body crotch is arranged two, and interconnecting piece 701 is located between two main body crotch and is fixedly connected with two main body crotch.Main body crotch
It is for holding cargo, main body crotch is L-shaped structure, and main body crotch includes the vertical component effect 702 and horizontal part 703 being connected, even
Socket part 701 is fixedly connected with vertical component effect 702.The length direction of interconnecting piece 701 and the length direction of vertical component effect 702 are perpendicular, even
The length direction of socket part 701 is simultaneously perpendicular with the length direction of lifting arm arm body 501, and lifting arm arm body 501 is in interconnecting piece 701
Length direction on middle position be fixedly connected with interconnecting piece 701.The length direction and lifting arm arm body of horizontal part 703
501 length direction is parallel, and horizontal part 703 is stretched out towards the outside of vertical component effect 702, horizontal part 703 and vertical component effect 702
Lower end is fixedly connected and the length direction of horizontal part 703 and the length direction of vertical component effect 702 are perpendicular, the length of interconnecting piece 701
Direction is parallel with the rotation centerline of lifting arm, and two horizontal parts 703 match, and for holding cargo, stability is good.
The power assisted manual fork truck of above structure, can fork carrying compared with parcel, convenient and efficient, easy to operate.It is used
The mode that manual drive fork truck is advanced provides auxiliary power by linear actuator, and rising and falling for cargo is realized in help.When operation,
It after pallet fork 7 forks cargo, is switched by the raising at fixed handle, the power source work of linear actuator, driving elevating lever movement rises
Drop arm, pallet fork 7, cargo move therewith.After promoting proper height, pushes fork truck to march to cargo storage position, press landing
The elevating lever of switch, linear actuator is shunk, and lifting arm, pallet fork 7, cargo land therewith, after cargo is placed into proper height,
It extracts pallet fork 7 out, completes the carrying of cargo.Entire use process of the invention does not need professional operation technology, and structure is simple, processing
Manufacture is easy, and using wheel as fulcrum, has reached labour-saving effect using lever principle, and fork truck movement is convenient, flexible, highly-safe,
And efficient work, it is applied widely, there is preferable transporting capacity, effectively reduce labor intensity, targetedly solve
Large-scale fork truck of having determined is not suitable for the occasion of work, can be widely applied to daily life and field of industrial production.
The present invention is exemplarily described in conjunction with attached drawing above.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out；Or not
It is improved, above-mentioned conception and technical scheme of the invention are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (7)
1. the power assisted manual fork truck based on lever principle, the pallet fork including forklift frame and for holding cargo, it is characterised in that:
It further include the linear controller being set on the forklift frame, forklift frame includes pedestal, the wheel being set on pedestal, sets
The large arm being placed on pedestal and the lifting arm with large arm rotation connection, the pallet fork are set on lifting arm, and large arm includes and bottom
The large arm arm body of seat connection is connect with large arm arm body and the bracket below large arm arm body and the castor being set on bracket,
Large arm arm body is arranged parallel two, and linear actuator is located between two large arm arm bodies and linear actuator and pedestal and liter
Arm connection is dropped.
2. the power assisted manual fork truck according to claim 1 based on lever principle, it is characterised in that: the large arm arm as
The strip rod piece of inner hollow, the lifting arm be located between two large arm arm bodies and lifting arm and two large arm arm bodies one
End rotation connection, the other end of two large arm arm bodies are connect with the tube chamber welds with base.
3. the power assisted manual fork truck according to claim 2 based on lever principle, it is characterised in that: the bracket setting two
A, two brackets are fixedly connected respectively at a large arm arm body, and the castor is respectively set on each bracket.
4. the power assisted manual fork truck according to claim 2 or 3 based on lever principle, it is characterised in that: the large arm is also
Including the handle being set to the large arm arm, handle mounting groove is equipped with large arm arm.
5. the power assisted manual fork truck according to any one of claims 1 to 4 based on lever principle, it is characterised in that: the line
Property actuator include the power source being set on the pedestal and connect with power source and the lifting arm and to be telescopic
Telescopic rod.
6. the power assisted manual fork truck according to any one of claims 1 to 5 based on lever principle, it is characterised in that: the goods
Fork includes L-shaped body crotch and the interconnecting piece connecting with the lifting arm, and main body crotch is arranged two, and connecting portion is in two
It is fixedly connected between main body crotch and with two main body crotch.
7. the power assisted manual fork truck according to claim 6 based on lever principle, it is characterised in that: the main body crotch packet
The vertical component effect and horizontal part being connected are included, the interconnecting piece is fixedly connected with vertical component effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811117524.3A CN109292682A (en) | 2018-09-20 | 2018-09-20 | Power assisted manual fork truck based on lever principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811117524.3A CN109292682A (en) | 2018-09-20 | 2018-09-20 | Power assisted manual fork truck based on lever principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109292682A true CN109292682A (en) | 2019-02-01 |
Family
ID=65164296
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811117524.3A Pending CN109292682A (en) | 2018-09-20 | 2018-09-20 | Power assisted manual fork truck based on lever principle |
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| Country | Link |
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| CN (1) | CN109292682A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112723251A (en) * | 2021-04-02 | 2021-04-30 | 山东工力机械有限公司 | Vehicle-mounted cargo handling forklift |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106809768A (en) * | 2017-02-28 | 2017-06-09 | 薄纯国 | A kind of hand propelled foldable suspension arm loading-unloading vehicle |
| CN209567759U (en) * | 2018-09-20 | 2019-11-01 | 安徽工程大学 | Power assisted manual fork truck |
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2018
- 2018-09-20 CN CN201811117524.3A patent/CN109292682A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106809768A (en) * | 2017-02-28 | 2017-06-09 | 薄纯国 | A kind of hand propelled foldable suspension arm loading-unloading vehicle |
| CN209567759U (en) * | 2018-09-20 | 2019-11-01 | 安徽工程大学 | Power assisted manual fork truck |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112723251A (en) * | 2021-04-02 | 2021-04-30 | 山东工力机械有限公司 | Vehicle-mounted cargo handling forklift |
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Application publication date: 20190201 |
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