CN108726445A - A kind of easy electric pallet truck - Google Patents
A kind of easy electric pallet truck Download PDFInfo
- Publication number
- CN108726445A CN108726445A CN201810783494.3A CN201810783494A CN108726445A CN 108726445 A CN108726445 A CN 108726445A CN 201810783494 A CN201810783494 A CN 201810783494A CN 108726445 A CN108726445 A CN 108726445A
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- pedal
- hinged
- bodywork
- oil tank
- pallet truck
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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
- B66F9/07568—Steering 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
- B66F9/0759—Details of operating station, e.g. seats, levers, operator platforms, cabin suspension
-
- 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
-
- 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
- B66F9/24—Electrical 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)
- Handcart (AREA)
Abstract
The invention discloses a kind of easy electric pallet trucks, including bodywork system, drive system, manipulate steering, raising link assembly, hydraulic system and electrical system, drive system includes the driving wheel being arranged in bodywork system lower part, the upper-end bent for manipulating steering extends in the top of bodywork system, the lower end for manipulating steering is fixedly connected with drive system or hydraulic cylinder, raising link assembly is arranged the rear side in bodywork system and is rotatablely connected with bodywork system, in the front side of bodywork system, overturning is connected with a pedal assembly, driving element is equipped between the front frame and pedal assembly of bodywork system, driving element makes pedal assembly be located in the folded state of front frame of reclining upwards, when pedal is unfolded, one buffer element plays cushioning effect.The present invention can effectively mitigate the work load of operator, and pedal has good buffering and damping effect, improves comfort level when operator station is driven；The vehicle is small, is applicable to operation in narrow space.
Description
Technical field
The present invention relates to cargo instrument technical fields, more particularly, to a kind of easy electric pallet truck.
Background technology
In storage, logistics place, can move be loaded with kinds of goods tray truck application it is very common, tray truck point
It is manual and electronic, generally includes front frame, Rear frame, driving wheel is equipped in the lower part of front frame, in the rear side of Rear frame
Equipped with left and right pallet fork, it is equipped with raising link assembly in the downside of left and right pallet fork, the rear end of raising link assembly is equipped with idler wheel.Hand
Although dynamic carrier has advantage simple in structure, size is smaller, there is great work intensity, ineffective lack
It falls into.And electronic carrier is then driven by motor, to realize the movement of carrier, can greatly mitigate the work of operating personnel
Make intensity, be conducive to improve working efficiency, thus possesses broader market.
In all-electric tray truck, there is a kind of light-duty all-electric tray truck, this kind of vehicle type structure is compact, vehicle body
Simplify, carries flexibly, it is easy to maintain, it is to develop from manual transport trolley, the especially more conventional electric pallet of its cost is carried
Vehicle is much lower.Due to small, price is low, which obtains the favor of numerous medium-sized and small enterprises and individual business operator.But it is existing
Some light-weight electric tray trucks are legged operation, and the working efficiency of the operator for frequently using for a long time is difficult
It improves.
Invention content
The purpose of the present invention is to solve the appearance and sizes present in the existing electric pallet truck with pedal greatly,
The problem of it is impossible to meet narrow space operations provides a kind of easy electric pallet truck, had both been conveniently operated personnel and has stood
Standing when formula operation is driven, to reduce the working strength of operating personnel, and can meet being capable of the operation in narrow space
It is required that.
To achieve the goals above, the present invention uses following technical scheme：
A kind of easy electric pallet truck, including bodywork system, drive system, manipulate steering, raising link assembly,
Hydraulic system and electrical system, the hydraulic system and electrical system are respectively placed in inside bodywork system and connect with drive system
It connects, the drive system is described to manipulate the upper of steering including being arranged in bodywork system lower part by motor-driven driving wheel
End bending extends in the top of bodywork system, and the lower end for manipulating steering is fixed with drive system or hydraulic cylinder to be connected
It connects, the raising link assembly is arranged the rear side in bodywork system and is rotatablely connected with bodywork system, in the front side of bodywork system
Overturning is connected with a pedal assembly, and driving element, the driving member are equipped between the front frame and pedal assembly of bodywork system
Part makes pedal assembly be located in the folded state being rotated up to the front frame that reclines, and a cushioning element is equipped in the pedal assembly
Part.
Existing electric pallet truck is limited by lightweight construction form does not set pedal usually, thus operating personnel
Great work intensity.In the front side of bodywork system, overturning is connected with a pedal assembly to the present invention, since pedal assembly is to turn up and down
It is arranged on bodywork system dynamicly, and driving element is set between the front frame and pedal assembly of bodywork system, makes to step on
Plate remains the power being flipped up.In this way, when storing electric pallet truck, driving element can push pedal assembly to
On turn to the folded state of the vertical front frame that reclines, thus can significantly reduce the monnolithic case ruler of electric pallet truck
It is very little.That is, one aspect of the present invention makes operating personnel that can stand operates electric pallet truck on pedal assembly, to significantly
Ground mitigates its working strength, on the other hand, and can allow electric pallet truck operation in small space.In particular, this
Invention is equipped with a buffer element in pedal assembly, and buffer element can be used polyurethane and be made, can be to the pedal group of horizontality
Part forms resilient support, to form good elastic shock absorbing effect to the operating personnel on pedal that stand.
Preferably, the pedal assembly includes the pedal base being connected in front frame, the pedal that is connected on pedal base,
Two hinge bars in left and right are equipped in the downside of pedal, the end of the hinge bar is hinged on the articulated stand in pedal base, institute
The driving element one end stated is rotatablely connected with front frame, and the other end is rotatablely connected with pedal, and the buffer element, which is fixed on, to be stepped on
On panel seat and it is supported on the lower section of hinge bar.
When pedal rotates upwardly and downwardly, hinge bar can rotate upwardly and downwardly in the rotation slot of pedal base.In particular, the present invention
Buffer element is fixed on pedal base and is supported on the lower section of hinge bar, and good shock-proof effect can be formed to pedal.
Preferably, the buffer element is to be arranged to correspond in the bottom of pedal base that elasticity can be provided at hinge bar position
The elastic spacing block of restoring force, the elastic spacing block are made of polyurethane, when pedal assembly is overturn forward to horizontality
When, hinge bar is against corresponding elastic spacing block.
There is good pressure-resistant performance using elastic spacing block made of polyurethane, remain to protect when repeatedly extruding in pedal
Good screen resilience is held, to form resilient support to the pedal assembly of horizontality.
Preferably, the driving element is gas spring, one end of the gas spring is hinged on pedal base, other end hinge
It is connected on the downside of pedal, the gas spring makes pedal overcome gravity and be maintained at the state being flipped up.
When needing to operate electric pallet truck, pedal can be made to overcome the bullet of gas spring by the own wt of operating personnel
Power is swung down to horizontality；And when needing to store electric pallet truck, gas spring automatically can push pedal to turn upwards
It is dynamic, realize automatically reseting to folded state for pedal group.
Preferably, being equipped with follower rollers component, the rear end of the raising link assembly in the rear end of raising link assembly
It is rotatablely connected with the middle part of connecting plate in follower rollers component, to make the follower rollers of follower rollers component that can swing up and down.
The follower rollers component of the present invention forms seesaw structure, so make in follower rollers component former and later two are servo-actuated
Idler wheel can automatically adapt to inclination and the injustice of bottom surface, it is ensured that two follower rollers are uniformly contacted with ground always, and then are reduced
The load-bearing pressure of each follower rollers.
Preferably, the bodywork system includes front frame, Rear frame, lift oil tank is vertically set in front frame,
The hydraulic system includes the power unit being arranged in Rear frame for driving lift oil tank, the cylinder barrel of the lift oil tank
Lower end is fixedly connected with the upper end of drive system, to make cylinder barrel that can be rotated with drive system, the work of the lift oil tank
Stopper rod upper end and the upper end of Rear frame are rotatablely connected, the cylinder barrel side for manipulating steering and being connected to lift oil tank lower part.
Power unit can drive lift oil tank that Rear frame is driven to rise, and at the same time, raising can be passed through by manipulating steering
Oil cylinder easily drives driving wheel to rotate, and then realizes the steering of electric pallet truck.Since lift oil tank is connected directly between
Therefore the pivot center of drive connection seat and driving wheel and the axis coaxle of lift oil tank can be made by being drivingly connected the top of seat,
And then it can avoid the swing friction that driving wheel forms an arc when turning between ground.
Preferably, the upper end of the drive system is provided with shaft, rotary hole is provided in the front frame, it is described
Shaft is rotatably connected with rotary hole.
Preferably, the manipulation steering includes control crank and connecting bracket, the lower end of the connecting bracket with
Drive system or hydraulic cylinder are fixedly connected, and the connecting bracket upper-end bent extends to the top of bodywork system, described
Control crank lower end is rotatably connected with connecting bracket upper end and the swivel joint is located at the top of bodywork system.
When we are rotatablely connected holder by control crank, you can drive drive system or hydraulic cylinder rotation, in turn
Driving wheel rotation is driven, to control travel direction.Since connecting bracket upper-end bent extends to the top of bodywork system, and grasp
Vertical handle, at its lower end and the swivel joint of connecting bracket upper end are located at the top of bodywork system, therefore are conducive to further compact knot
Structure, at the same convenient for users to manipulation.
As a kind of alternative solution of aforementioned schemes, the upside of the pedal is equipped with two control pedals in left and right, and control is stepped on
The rear side of plate is equipped with lateral spline housing, is equipped with lateral arrangement in the rear side of pedal and working chamber penetrates through the hydraulic cylinder at both ends,
It is fitted with extruding plunger respectively at the both ends of hydraulic cylinder working chamber, is set respectively at the left and right ends that pedal is located at hydraulic cylinder
There is swivel nut, and the internal thread of left and right ends swivel nut is oppositely oriented, the swivel nut internal thread is connected with driving screw rod, drives screw rod
One end and the extruding plunger of corresponding side it is coaxially connected, drive the spline of the other end and the control pedal of corresponding side of screw rod
Spline connection is covered, resetting spring is equipped between control pedal and pedal, oil outlet is equipped on the outside of the middle part of the hydraulic cylinder
And oil inlet, the oil outlet are connected by the pipeline equipped with check valve with the working chamber of lift oil tank, the oil inlet is logical
It crosses the pipeline equipped with check valve with fuel tank to be connected, the working chamber of the lift oil tank passes through pipeline and fuel tank equipped with control valve
It is connected, when the foot of operating personnel tramples control pedal downwards, control pedal drives driving screw rod to rotate forward, and drives screw rod
It pushing and squeezes plunger axial advancement, the hydraulic oil in hydraulic cylinder working chamber is entered by oil outlet in lift oil tank, to
Lift oil tank driving Rear frame is set to increase；When the foot of operating personnel is lifted up, resetting spring drive control pedal turns upwards
Dynamic, to drive driving screw rod to rotate backward, driving screw rod moves after pulling squeezes plunger axial direction, and hydraulic cylinder working chamber is formed
Negative pressure, the hydraulic oil in fuel tank are entered by oil inlet in hydraulic cylinder working chamber.
Preferably, the front side of the Rear frame is equipped with hinged block, spherical hollow space is equipped in hinged block, in hinged block
Downside is equipped with the insertion circular hole for vertically upwardly extending and penetrating through spherical hollow space, and the center of spherical hollow space, which is located at, is inserted into circular hole
On axis, hinged disk is equipped in spherical hollow space, the periphery of hinged disk is the spherical surface fitted in spherical hollow space, described
The piston rod upper end of lift oil tank is plugged in the spliced eye of hinged disc centre, is more than equipped with width in the downside of hinged block
The rectangle mounting hole of hinged disc height, rectangle mounting hole extend upwardly to the side wall and spherical hollow space phase of two width directions
It cuts, the axis of the rectangle mounting hole and the axis coaxle for being inserted into circular hole.
The present invention has the advantages that：Compared to existing light-weight electric tray truck, the present invention can be effective
Mitigate the work load of operator, pedal has good buffering and damping effect, improves comfort level when operator station is driven；And
And the vehicle is small, is applicable to operation in narrow space；In addition, the present invention is changed on the basis of light-weight electric tray truck
Into, drive formula electrocar compared to existing station, have the advantages that it is at low cost, be suitble to inexpensive marketing.
Description of the drawings
Fig. 1 is that the pedal assembly of the present invention is in a kind of structural schematic diagram of horizontality.
Fig. 2 is a kind of decomposition texture schematic diagram of the present invention.
Fig. 3 is a kind of lateral view at pedal assembly.
Fig. 4 is the attachment structure schematic diagram of pedal assembly and control pedal.
Fig. 5 is the attachment structure schematic diagram of lift oil tank and Rear frame.
In figure：1, front frame 11, driving wheel 12, elastic spacing block 13, rotation slot 14, drive connection seat
15, manipulate steering 2, Rear frame 21, pallet fork 211, reinforcing rib 22, hinged block 221, spherical hollow space 222,
It is inserted into circular hole 223, rectangle mounting hole 3, raising link assembly 31, L-shaped connecting rod 32, lifting linking member 33, supporting roller
Fork 34, synchronous cross bar 4, follower rollers component 41, follower rollers 42, pallet fork 5, pedal assembly 51, hinge bar
511, straight-bar 512, curved bar 52, control pedal 521, spline housing 53, hydraulic cylinder 531, oil inlet 532, go out
Hydraulic fluid port 54, swivel nut 55 squeeze plunger 56, driving screw rod 57, pedal base 58, pedal 6, gas spring 7, raising
Oil cylinder 8, hinged disk 9, accumulator.
Specific implementation mode
The present invention will be further described with specific implementation mode below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of easy electric pallet truck includes the vehicle being made of front frame 1, Rear frame 2
Body system, manipulates steering 15, raising link assembly 3, hydraulic system and the electrical system for including accumulator 9 at drive system,
Hydraulic system and electrical system are separately positioned on inside bodywork system and are connect with drive system, in order to be provided for drive system
Power, and control the action of drive system.Drive system therein includes being arranged in the lower part of front frame by motor-driven drive
Driving wheel 11, the lower end for manipulating steering are fixedly connected with drive system or hydraulic system, and raising link assembly is arranged in vehicle body
The rear side of system Rear frame is simultaneously rotatablely connected with Rear frame.Rear frame includes the pallet fork of left and right two being arranged on rear side of Rear frame
21, it is respectively provided with raising link assembly on the downside of each pallet fork, is respectively provided with including servo-actuated in the rear end of each raising link assembly
The follower rollers component 4 of idler wheel.In this way, when raising link assembly jacks up pallet fork, when being loaded with the pallet of cargo to jacking, motor
Driving wheel is set to rotate, follower rollers, that is, driven rolling in follower rollers component, entire electric pallet truck can be in electric power
Driving is lower to be moved ahead or retreats.It should be noted that driving wheel side is known as front side in the present embodiment, follower rollers side is claimed
For rear side, and correspondingly define left and right side.
In order to mitigate the working strength of operating personnel, it would be desirable to pedal assembly 5 be arranged in the lower front of front frame, step on
Board group part includes the pedal base 57 being connected on front of the car, the pedal 58 being rotatably connected on pedal base.In order to facilitate pedal
Rotation a, as shown in figure 3, driving element being made of gas spring 6, gas spring can be arranged in we between pedal base and pedal
One end be hinged on the lower part of pedal base, the other end of gas spring is hinged on the downside of pedal.It is known that gas spring is basic
Structure is similar with cylinder, when piston rod is pressurized, in piston rod retraction cylinder jacket, to make gas spring shorten；Work as piston rod
Active force removal when, piston rod forward extends out under the action of Kia.In this way, being swung down to water when operating personnel stand
When on the pedal of level state, gas spring is in compressive state；When operating personnel leave pedal, gas spring is extended to stretch-like
State, to which driving pedal is rotated up to the folded state for the front frame that reclines vertically.
As a preferred embodiment, two hinge bars 51 in downside setting left and right of pedal, hinge bar includes being connected to pedal
Downside and towards pedal base side extend straight-bar 511, the curved bar 512 formed is folded upward at by the rear end of straight-bar, to make hinge
Extension bar is L-shaped, and two articulated stands in setting left and right in pedal base, the curved bar end of hinge bar is hinged in pedal base corresponding one
On the articulated stand of side, to make pedal that can rotate upwardly and downwardly.It is set at hinge bar in addition, we can also correspond in the front side of pedal base
The rotation slot 13 upwardly extended is set, to make hinge bar be hinged on after rotation slot on the articulated stand in pedal base.When
When pedal is rotated up to vertical folded state, the upright straight-bar of hinge bar can be close proximity to pedal base, to be conducive to most
Reduce to limits the appearance and size of electric pallet truck.
Further, we can also correspond to hinge bar position setting elastic spacing block made of polyurethane in pedal base
12.When pedal assembly is in horizontality, the straight-bar of hinge bar is against corresponding limited block, to make the pedal of horizontality
With reliable positioning and good resilient support, good elastic shock absorbing can be formed to the operating personnel on pedal that stand and imitated
Fruit.
In order to jack pallet fork, a lift oil tank that can jack Rear frame 7, raising connecting rod can be arranged in we in front frame
The lifting linking member 32 that component then includes L-shaped connecting rod 31, extends along the longitudinal direction, one end of L-shaped connecting rod is hinged on the side of front frame
On wall, the other end of L-shaped connecting rod and the front end of lifting linking member are hinged, and turning point is rotated by rotating pin among L-shaped connecting rod
It is connected on the side wall of Rear frame.In addition, the rear end of lifting linking member is hinged with a servo-actuated wheel fork 33, the setting of follower rollers component
In the opening of servo-actuated wheel fork.The front end of pallet fork is connected with Rear frame, be servo-actuated wheel fork middle part by axis pin and pallet fork after
Side is rotatablely connected.In this way, when lift oil tank driving Rear frame rises together with the front end of pallet fork, since one end of L-shaped connecting rod is cut with scissors
It is connected in front frame, therefore, Rear frame drives L-shaped link rotatable, to drive lifting linking member to move backward, lifting linking member driving
Servo-actuated wheel fork drives and rises with the hinged pallet fork rear end of servo-actuated wheel fork around the axis pin rotation being arranged at middle part, at this time
The pallet for being loaded with cargo is lifted off ground by pallet fork.
It is understood that hinged point height between Rear frame and L-shaped connecting rod can be hinged with front frame and L-shaped connecting rod
Point height remains basically stable, and the hinged point height of L-shaped connecting rod and lifting linking member should be less than being hinged between Rear frame and L-shaped connecting rod
Point height, and the hinge joint of L-shaped connecting rod and lifting linking member should be located at the rear side of front frame and the hinge joint of L-shaped connecting rod, with
Just rise constantly in Rear frame, the hinge joint between Rear frame and L-shaped connecting rod does not generate movement backward substantially, and L-shaped connecting rod
Rotation with the hinge joint of lifting linking member is then decomposed into a upward movement and a movement backward, at this time lifting linking member
The displacement difference on front-rear direction is formed between pallet fork, lifting linking member forms an axis with respect to pallet fork and moves back.Further, since with
Follower rollers in dynamic roll wheel assembly are contacted with ground, and therefore, the hinge joint of lifting linking member and servo-actuated wheel fork should be arranged
At the front upper side of pallet fork and servo-actuated wheel fork hinge joint, so as to make when lifting linking member is moved backward with respect to pallet fork servo-actuated wheel fork with
Dynamic idler wheel is that supporting point generates a rotation, and then pallet fork is made also to form a upward movement and one with servo-actuated wheel fork hinge joint
A movement backward.Certainly, a synchronous cross bar 34, the left end of synchronous cross bar and rising for left side can be arranged in we in Rear frame
The L-shaped connecting rod in link assembly is risen to connection, synchronizes the L-shaped connecting rod in the right end of cross bar and the raising link assembly on right side to even
It connects, and then the raising link assembly of left and right two can be made to realize synchronization action.
In order to avoid the uneven adverse effect to follower rollers stress on ground, follower rollers component to may include left and right as possible
Two panels synchronous plate 42 disposed in parallel, former and later two follower rollers arranged side by side 41 being arranged between two panels synchronous plate, it is preceding
The left and right ends of the follower rollers in face are connected to the front end of corresponding side synchronous plate, the left and right ends of subsequent follower rollers
Be connected to the rear end of corresponding side synchronous plate, be servo-actuated wheel fork open side left and right ends respectively with follower rollers component pair
The middle part of the synchronous plate of side is answered to be rotatablely connected, to which the opening for making two follower rollers that can surround servo-actuated wheel fork generates rotation,
So that former and later two follower rollers can automatically adapt to inclination and the injustice on ground, it is ensured that two follower rollers are equal with ground always
Even contact, and then reduce the load-bearing pressure of each follower rollers.
For ease of manipulation, lift oil tank is vertically situated in front frame, and is arranged for driving raising in Rear frame
The power unit of oil cylinder（It is not shown in figure）.The cylinder barrel lower end connection of lift oil tank is drivingly connected seat, and driving wheel, which is then arranged, to be driven
Below dynamic connecting seat, the piston rod upper end of lift oil tank is rotatably connected with Rear frame front end, the cylinder barrel installed in front of lift oil tank
Face is fixedly connected with steering lower end is manipulated.Power unit can drive lift oil tank that Rear frame is driven to rise, at the same time, behaviour
Vertical steering can easily drive the driving wheel being arranged in the case where being drivingly connected seat to rotate by the cylinder barrel of lift oil tank, Jin Ershi
The steering of existing electric pallet truck.It is understood that we need the fuel tank of the setting storage hydraulic oil in Rear frame.When
When Rear frame needs lifting, power unit inputs the hydraulic oil in fuel tank in the working chamber of lift oil tank；When operating personnel are logical
It crosses and manipulates steering when opening the oil return line of lift oil tank, the hydraulic oil in the working chamber of lift oil tank flows back to fuel tank
Interior, Rear frame at this time declines together with pallet fork, makes the pallet fork of electric pallet truck that can easily be detached below pallet.
As a kind of alternative solution of aforementioned schemes, lift oil tank can also be driven by manpower, without in Rear frame
Corresponding power unit is set.Specifically, as shown in figure 4, two control pedals 52 in left and right can be arranged in the upside of pedal in we,
Lateral arrangement is arranged in the spline housing 521 of the left rear side setting transverse direction of the control pedal in left side, the right lateral side of the control pedal on right side
Spline housing, pedal close to front frame rear side centre position be fixedly installed one or so lateral arrangement hydraulic cylinder 53,
And a swivel nut being fixed on pedal 54 is respectively set at the left and right ends that the rear side of pedal is located at hydraulic cylinder, left and right two
The internal thread of a swivel nut is oppositely oriented and coaxially arranged with intermediate hydraulic cylinder.The working chamber of hydraulic cylinder penetrates through hydraulic cylinder
The both ends of set are adapted to an extruding plunger 55 at the both ends of hydraulic cylinder working chamber, are threadedly coupled in each swivel nut respectively
A piece driving screw rod 56, driving screw rod is coaxially connected close to one end of hydraulic cylinder and the extruding plunger of corresponding side, drives spiral shell
The spline housing spline of the other end of bar and the control pedal of corresponding side connects, and in the downside of control pedal and pedal assembly
Resetting spring is set between upside（It is not shown in figure）.
In addition, the oil outlet 532 and oil inlet 531 of unicom working chamber are arranged on the outside of the middle part of hydraulic cylinder, oil outlet is logical
It crosses pipeline with the working chamber of lift oil tank to be connected, and is arranged by oil outlet to the list of lift oil tank one-way conduction on the pipeline
To valve；Oil inlet is connected by pipeline with fuel tank, and is arranged by the unidirectional of fuel tank to oil inlet one-way conduction on the pipeline
Valve；The working chamber of lift oil tank is then connected by the pipeline equipped with control valve with fuel tank.
When the foot of operating personnel tramples control pedal downwards, control pedal drives driving screw rod to rotate forward, and drives at this time
Dynamic screw rod moves axially under the action of swivel nut, to push extruding plunger axial advancement connected to it, hydraulic cylinder work
The hydraulic fluid pressure of intracavitary increases, and is entered in lift oil tank by oil outlet, and then lift oil tank driving Rear frame is made to increase,
The check valve being arranged at this time on the pipeline between oil inlet and fuel tank prevents hydraulic oil from entering in fuel tank by oil inlet；Work as behaviour
When making the foot of personnel and being lifted up, resetting spring drive control pedal is rotated up, and to drive driving screw rod to rotate backward, is driven
Dynamic screw rod moves after pulling extruding plunger axial direction, and hydraulic cylinder working chamber forms negative pressure, is arranged at this time in connection oil outlet and rises
Check valve on pipeline between oil-lifting jar prevents the hydraulic oil reflux in lift oil tank, and the hydraulic oil in fuel tank then by into
Hydraulic fluid port enters in hydraulic cylinder working chamber.And so on, the left and right foot of operating personnel tramples control pedal successively, you can after realization
The Manual hydraulic of vehicle frame and pallet fork drives.
It should be noted that a fulcrum bearing can be respectively set in we at left and right sides of the rear side of pedal, so as to make with
The end of the driving screw rod of spline housing spline connection can be supported in the fulcrum bearing of corresponding side.
Finally, as shown in figure 5, we can also being hinged in the front side centre position of Rear frame one cuboid body shape of setting
Spherical hollow space 221 is arranged in block 22 in hinged block at center, in the downside of hinged block, setting is vertically upwardly extended and penetrated through
The center of the insertion circular hole 222 of spherical hollow space, spherical hollow space is located on the axis for being inserted into circular hole, is arranged in spherical hollow space hinged
The periphery of disk 8, hinged disk is the spherical surface fitted in spherical hollow space.That is, hinged disk is symmetrical by two
The parallel plane that ground is located at the centre of sphere both sides of sphere cuts the obtained cydariform disk of the sphere, and at the center of hinged disk
Grafting through-hole is set.The piston rod upper end of lift oil tank is plugged in the spliced eye of hinged disc centre.
Since the spherical hollow space of hinged disk and hinged block is spherical surface connection, on the one hand make lift oil tank that can pass through
Hinged disk transmits upward axial thrust to the hinged block of Rear frame, while can make upper end and the hinge of the piston rod of lift oil tank
It is hinged to connect can be formed between block around the center of spherical hollow space 360 degree, lift oil tank vehicle frame upon activation can be effectively prevented from
Occurs the stuck phenomenon between piston rod upper end and Rear frame when rising.Certainly, we can be in the piston rod upper end of lift oil tank
One shaft shoulder is set, so as to limit the depth that piston rod is inserted into spliced eye.
The hingedly installation of disk for convenience, we can be arranged width in the downside of hinged block and be more than hinged disc height
Rectangle mounting hole 223, rectangle mounting hole extend upwardly to width direction two side walls and spherical hollow space it is tangent, and rectangle
The axis of mounting hole and the axis coaxle for being inserted into circular hole, that is to say, that the diagonal line intersection point of the cross section of rectangle mounting hole is located at
Be inserted on the axis of circular hole, to make rectangle mounting hole two length directions sidewall symmetry be located at and be inserted into round hole axial
Both sides, and the length of rectangle mounting hole is equal to the diameter of spherical hollow space.In this way, we can make hinged disk first rotate 90 degree, this
When hinged disk axis it is vertical with the insertion axis of circular hole, be then put into rectangle mounting hole with the height of hinged disk, when
When hinged disk is put into bottom in rectangle mounting hole, hinged disk be bonded and concentric with spherical hollow space, will be hinged disk turn at this time
It is 90 degree dynamic, so that the axis of hinged disk is overlapped with the axis for being inserted into circular hole, you can be plugged on the piston rod of lift oil tank hinged
In the spliced eye of disc centre, hinged disk at this time can be reliably rotatably connected in spherical hollow space, avoid hinged disk
Deviate from out of spherical hollow space.It is understood that the aperture for being inserted into circular hole should be greater than the diameter of piston rod.
When formula electric pallet truck is driven at the easy station of one kind of the operation present invention, pedal assembly is unfolded, operator station exists
On pedal, so that pedal is squeezed polyurethane limited block, reach position-limiting action, since polyurethane limited block has elasticity, also makes pedal
Assembly has certain buffering and damping effect；When pedal is packed up, support force is provided by gas spring, ensures that pedal will not automatic turning.
Operator's left-right rotation operation handle drives the cylinder barrel of lift oil tank to rotate, while drive system being driven to rotate, and completes to turn to fortune
It is dynamic.
In addition to above preferred embodiment, the present invention also has other embodiments, those skilled in the art can be according to this
Invention makes various changes and modifications, and without departing from the spirit of the present invention, should all belong to appended claims of the present invention and determine
The range of justice.
Claims (10)
1. a kind of easy electric pallet truck, including bodywork system, drive system, manipulation steering, raising connection rod set
Part, hydraulic system and electrical system, the hydraulic system and electrical system are separately positioned on inside bodywork system and are with driving
System connection, characterized in that the drive system includes being arranged in bodywork system lower part by motor-driven driving wheel, the manipulation
The upper-end bent of steering extends in the top of bodywork system, the lower end for manipulating steering and drive system or hydraulic pressure
Oil cylinder is fixedly connected, and the raising link assembly is arranged the rear side in bodywork system and is rotatablely connected with bodywork system, in vehicle body
The front side overturning of system is connected with a pedal assembly, and driving element is equipped between the front frame and pedal assembly of bodywork system,
The driving element makes pedal assembly be located in the folded state being rotated up to the front frame that reclines, and is equipped in the pedal assembly
One buffer element.
2. a kind of easy electric pallet truck according to claim 1, characterized in that the pedal assembly includes connecting
The pedal base being connected in front frame, the pedal being connected on pedal base are equipped with two hinge bars in left and right in the downside of pedal, described
The end of hinge bar is hinged on the articulated stand in pedal base, and described driving element one end is rotatablely connected with front frame, separately
One end is rotatablely connected with pedal, and the buffer element is fixed on pedal base and is supported on the lower section of hinge bar.
3. a kind of easy electric pallet truck according to claim 2, characterized in that the buffer element is to set
It sets to correspond in the bottom of pedal base and the elastic spacing block of elastic-restoring force can be provided at hinge bar position, the elastic spacing block is adopted
It is made of polyurethane, when pedal assembly is overturn forward to horizontality, hinge bar is against corresponding elastic spacing block.
4. a kind of electric pallet truck according to claim 1, characterized in that the driving element is gas spring, institute
The one end for stating gas spring is hinged on pedal base, and the other end is hinged on the downside of pedal, and the gas spring makes pedal overcome gravity
And it is maintained at the state being flipped up.
5. a kind of easy electric pallet truck according to claim 1, characterized in that after raising link assembly
End is equipped with follower rollers component, and the rear end of the raising link assembly and the middle part rotation of connecting plate in follower rollers component connect
It connects, to make the follower rollers of follower rollers component that can swing up and down.
6. a kind of easy electric pallet truck according to claim 1, characterized in that before the bodywork system includes
Vehicle frame, Rear frame, are vertically arranged lift oil tank in front frame, and the hydraulic system includes being arranged in Rear frame for driving
The power unit of dynamic lift oil tank, the cylinder barrel lower end of the lift oil tank is fixedly connected with the upper end of drive system, to make
Cylinder barrel can be rotated with drive system, and the piston rod upper end of the lift oil tank and the upper end of front frame are rotatablely connected, described
Manipulate the cylinder barrel side that steering is connected to lift oil tank lower part.
7. a kind of easy electric pallet truck according to claim 1, characterized in that the drive system it is upper
End is provided with shaft, rotary hole is provided in the front frame, the shaft is rotatably connected with rotary hole.
8. a kind of easy electric pallet truck according to claim 1, characterized in that the manipulation steering packet
Control crank and connecting bracket are included, the lower end of the connecting bracket is fixedly connected with drive system or hydraulic cylinder, the company
The top that pedestal upper end bending extends to bodywork system is connect, the control crank lower end is rotatably connected simultaneously with connecting bracket upper end
And the swivel joint is located at the top of bodywork system.
9. a kind of easy electric pallet truck according to claim 1, characterized in that the upside of the pedal is equipped with
The rear side of two control pedals in left and right, control pedal is equipped with lateral spline housing, and lateral arrangement and work are equipped in the rear side of pedal
The hydraulic cylinder for making chamber perforation both ends, is fitted with extruding plunger at the both ends of hydraulic cylinder working chamber, is located at liquid in pedal respectively
Swivel nut is respectively equipped at the left and right ends of device for pressing cylinder liner, and the internal thread of left and right ends swivel nut is oppositely oriented, spiral shell in the swivel nut
Line is connected with driving screw rod, and the one end for driving screw rod and the extruding plunger of corresponding side are coaxially connected, drive the other end of screw rod
It is connected with the spline housing spline of the control pedal of corresponding side, resetting spring, the liquid is equipped between control pedal and pedal
It is equipped with oil outlet and oil inlet on the outside of the middle part of device for pressing cylinder liner, the oil outlet passes through pipeline equipped with check valve and lift oil tank
Working chamber be connected, the oil inlet is connected by the pipeline equipped with check valve with fuel tank, the work of the lift oil tank
Chamber is connected by the pipeline equipped with control valve with fuel tank, when the foot of operating personnel tramples control pedal downwards, control pedal
Driving screw rod is driven to rotate forward, driving screw rod, which pushes, squeezes plunger axial advancement, the hydraulic oil in hydraulic cylinder working chamber
Entered in lift oil tank by oil outlet, to make lift oil tank driving Rear frame rise；When the foot of operating personnel is lifted up
When, resetting spring drive control pedal is rotated up, and to drive driving screw rod to rotate backward, driving screw rod pulls squeezing rod
Plug axis moves back, and hydraulic cylinder working chamber forms negative pressure, and the hydraulic oil in fuel tank enters hydraulic cylinder working chamber by oil inlet
It is interior.
10. a kind of easy electric pallet truck according to claim 9, characterized in that the front side of the Rear frame
Equipped with hinged block, it is equipped with spherical hollow space in hinged block, is equipped in the downside of hinged block and vertically upwardly extends and penetrate through ball
The center of the insertion circular hole of shape cavity, spherical hollow space is located on the axis for being inserted into circular hole, and hinged disk is equipped in spherical hollow space,
The periphery of hinged disk is the spherical surface fitted in spherical hollow space, and the piston rod upper end of the lift oil tank is plugged on hinged circle
In the spliced eye of disk center, the rectangle mounting hole that width is more than hinged disc height, rectangle peace are equipped in the downside of hinged block
Dress hole extends upwardly to that the side walls of two width directions is tangent with spherical hollow space, axis and the insertion circular hole of the rectangle mounting hole
Axis coaxle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810783494.3A CN108726445B (en) | 2018-07-17 | 2018-07-17 | Simple electric pallet truck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810783494.3A CN108726445B (en) | 2018-07-17 | 2018-07-17 | Simple electric pallet truck |
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| CN108726445B CN108726445B (en) | 2023-07-21 |
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| CN201810783494.3A Active CN108726445B (en) | 2018-07-17 | 2018-07-17 | Simple electric pallet truck |
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| CN110028023A (en) * | 2019-05-17 | 2019-07-19 | 谢瑞同 | A kind of electrocar and its working method |
| CN113845065A (en) * | 2021-08-23 | 2021-12-28 | 杭叉集团(天津)新能源叉车有限公司 | Lifting structure for pallet truck for improving lifting stability and lifting height |
| CN114394557A (en) * | 2021-12-31 | 2022-04-26 | 浙江西车智能物流装备有限责任公司 | Electric carrying forklift |
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|---|---|
| CN108726445B (en) | 2023-07-21 |
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