CN220247062U

CN220247062U - Electric forklift controlled to move by rocker

Info

Publication number: CN220247062U
Application number: CN202321469522.7U
Authority: CN
Inventors: 陶必强; 谭娟
Original assignee: Chongqing Shengqida Construction Equipment Leasing Co ltd
Current assignee: Chongqing Shengqida Construction Equipment Leasing Co ltd
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-12-26
Anticipated expiration: 2033-06-09

Abstract

The utility model relates to an electric forklift with a rocker for controlling movement, which comprises a frame, a body arranged on the frame and a bucket assembly arranged on the body, wherein a driving system comprises a first driving motor arranged on the frame, a second driving motor arranged on the frame, a first controller for controlling the first driving motor, a second controller for controlling the second driving motor and an operating rocker for inputting driving control signals; the two sides of the frame are symmetrically provided with wheel sets, one side wheel set is in transmission connection with the first driving motor, the other side wheel set is in transmission connection with the second driving motor, the wheels on the two sides can be controlled to move through the rocker, steering and turning around are achieved through differential speed, and the frame is suitable for material transportation in narrow places.

Description

Electric forklift controlled to move by rocker

Technical Field

The utility model relates to the technical field of electric forklift trucks, in particular to an electric forklift truck with a rocker for controlling movement.

Background

Most of the existing forklift running mechanisms are driven by rear wheels or four wheels, the driving mode is large in turning radius and cannot be suitable for material transportation in narrow places, the forklift cannot turn or turn around due to the limitation of the size of places in scenes such as construction sites or farms where short-distance material transportation is needed, the traditional forklift can only be used for carrying materials, the problems of high labor intensity and low production efficiency exist, and the forklift generally runs through a steering wheel, an accelerator pedal and a brake pedal and has certain requirements on driving skills of operators.

Disclosure of Invention

The utility model aims to provide an electric forklift with a rocker controlled to move, which can control wheels on two sides to move through the rocker and realize steering and turning around through differential speed, and is suitable for material transportation in narrow places.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

an electric forklift with rocker control movement, comprising a frame, a body arranged on the frame and a bucket assembly arranged on the body, and further comprising: the driving system comprises a first driving motor arranged on the frame, a second driving motor arranged on the frame, a first controller for controlling the first driving motor, a second controller for controlling the second driving motor and a control rocker for inputting driving control signals; the two sides of the frame are symmetrically provided with wheel sets, wherein one side wheel set is in transmission connection with the first driving motor, and the other side wheel set is in transmission connection with the second driving motor.

Further, the first controller and the second controller are respectively provided with a rotating handle signal receiving end and an inversion signal receiving end; the signal receiving end of the rotating handle of the first controller is electrically connected with a first speed regulating switch, the first speed regulating switch is electrically connected with a first delay relay and is electrically connected with an operating rocker simultaneously, the signal receiving end of the rotating handle of the second controller is electrically connected with a second speed regulating switch, the second speed regulating switch is electrically connected with a second delay relay and is electrically connected with the operating rocker simultaneously, the first delay relay and the second delay relay are electrically connected with the operating rocker simultaneously, and the reverse signal receiving ends of the first controller and the second controller are electrically connected with the operating rocker simultaneously.

Further, a first braking device is arranged on the first driving motor, a second braking device is arranged on the second driving motor, and the first braking device and the second braking device are electrically connected with the control rocker.

Further, the wheel set comprises a first wheel and a second wheel, and the first wheel is in transmission connection with the second wheel.

Further, the first wheels are provided with first chain wheels, the second wheels are provided with second chain wheels, and the first wheels and the second wheels are connected through chain transmission arranged on the first chain wheels and the second chain wheels.

Further, the first driving motor and the second driving motor are in transmission connection with the corresponding wheel sets through axles.

Further, the bucket assembly comprises a movable arm, a tipping bucket, an oil cylinder, a hydraulic motor and a bucket rocker, the tipping bucket is arranged on the movable arm, the tipping bucket and the movable arm are driven by the oil cylinder, the oil cylinder is hydraulically connected with the hydraulic motor, and the bucket rocker is used for inputting a control signal of the hydraulic motor and distributing hydraulic oil.

Further, a ceiling is arranged at the top of the vehicle body.

Further, a foot pedal for a worker to stand is arranged on the frame.

The utility model has the beneficial effects that:

1. because the wheels on the two sides of the electric forklift are driven by the two sets of mutually independent driving motors and the controller respectively, the steering and turning of the electric forklift can be realized through the differential speed of the wheels on the two sides, and the turning radius is small, so that the electric forklift is suitable for material transportation in narrow places.

2. Because driving motor and controller adopt the actuating system on the storage battery car, the technology maturation cost is lower, and the speed governing switch replaces the change of handle to send and changes the signal and delay between the time delay relay switch-on speed governing switch simulation reverse gear and the twist change of handle, makes the control rocker realized reverse gear button and change the function, still has set up the arresting gear who is connected with the control rocker electricity on driving motor, can control the direction of travel and the braking of electric forklift through the control rocker, and the operation is simpler directly perceivable.

Drawings

FIG. 1 is a schematic diagram of an electric forklift;

FIG. 2 is a schematic block diagram of a circuit of the electric shovel;

FIG. 3 is a schematic view of the chassis structure of the electric forklift;

fig. 4 is a schematic structural view of the connection relationship between the first driving motor and the first braking device.

Technical features and marks in the drawings:

a first driving motor 1, a first braking device 11,

A second driving motor 2, a second braking device 21,

A storage battery 3, a main power switch 31, a charging device 32, a voltage converter 33,

A first controller 40, a second controller 41, a first delay relay 42, a second delay relay 43, a first speed regulating switch 44, a second speed regulating switch 45,

Operating rocker 5,

A hydraulic switch 60, a hydraulic motor 61, a movable arm 62, a tipping bucket 63, a bucket rocker 64,

A frame 71, a foot pedal 72, a body 73, a ceiling 74,

A first wheel 81, a second wheel 82, a first sprocket 83, a second sprocket 84, a chain 85, an axle 86.

Detailed Description

Embodiments of the present utility model will be described below with reference to the drawings and preferred embodiments, and those skilled in the art will appreciate further advantages and effects of the present utility model from the disclosure herein. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the illustrations, not according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.

An electric shovel with rocker controlled movement, the embodiment of which is shown in fig. 1 to 4, comprises a frame 71, a body 73 provided on the frame 71, and a bucket assembly provided on the body 73, and further comprises: a driving system including a first driving motor 1 provided on the frame 71, a second driving motor 2 provided on the frame 71, a first controller 40 for controlling the first driving motor 1, a second controller 41 for controlling the second driving motor 2, and a manipulation rocker 5 for inputting a driving control signal; the two sides of the frame 71 are symmetrically provided with wheel sets, wherein one side wheel set is in transmission connection with the first driving motor 1, and the other side wheel set is in transmission connection with the second driving motor 2.

In this embodiment, as shown in fig. 2, the first controller 40 and the second controller 41 each have a handle signal receiving end and an inversion signal receiving end; the steering handle signal receiving end of the first controller 40 is electrically connected with a first speed regulating switch 44, the first speed regulating switch 44 is electrically connected with a first delay relay 42 and is simultaneously electrically connected with the operating rocker 5, the steering handle signal receiving end of the second controller 41 is connected with a second speed regulating switch 45, the second speed regulating switch 45 is electrically connected with a second delay relay 43 and is simultaneously electrically connected with the operating rocker 5, the first delay relay 42 and the second delay relay 43 are both electrically connected with the operating rocker 5, and the reversing signal receiving ends of the first controller 40 and the second controller 41 are both electrically connected with the operating rocker 5.

The delay relay and the control rocker 5 are connected on the power supply loop of the corresponding speed regulating switch in parallel, the on-off of the speed regulating switch can be independently controlled to simulate the handle turning signal, meanwhile, the delay relay is controlled to be on-off by the rocker, the handle turning signal is required to be sent out through the delay relay for 0.5s in reversing, and the forward control rocker 5 is directly communicated with the speed regulating switch.

In this embodiment, the operating rocker 5 is a four-way reset rocker switch, the operating rocker 5 has five forward, backward, left and right rotational positions, and middle five rotational positions, and the operating rocker 5 sends control instructions to the first and second controllers 40 and 41 and the first and second brake devices 11 and 21 through four intermediate relays corresponding to the forward, backward, left and right rotational positions, respectively.

When the operating rocker 5 is in forward movement, the operating rocker 5 controls the corresponding forward movement of the intermediate relay control circuit to be communicated, so that corresponding loops of the first speed regulating switch 44, the second speed regulating switch 45, the first braking device 11 and the second braking device 21 which are connected to the normally open contact of the intermediate relay are communicated; when the operating rocker 5 is located at the backward position, the operating rocker 5 controls the communication of the intermediate relay control circuit corresponding to the backward position, so that the corresponding loops of the first brake device 11, the second brake device 21, the reverse signal receiving end of the first controller 40, the reverse signal receiving end of the second controller 41, the first delay relay 42 and the second delay relay 43 which are connected on the normally open contact of the intermediate relay are communicated; when the control rocker 5 is positioned at the left turning position, the control rocker 5 controls the communication of the intermediate relay control circuit corresponding to the left turning, so that the first braking device 11, the second braking device 21, the second speed regulating switch 45, the reverse signal receiving end of the first controller 40 and the corresponding loop where the first delay relay 42 is positioned which are connected on the normally open contact of the intermediate relay are communicated; when the control rocker 5 is positioned at the right turning position, the control rocker 5 controls the communication of the intermediate relay control circuit corresponding to the right turning, so that the first braking device 11, the second braking device 21, the first speed regulating switch 44, the reverse signal receiving end of the second controller 41 and the corresponding loop where the second delay relay 43 is positioned which are connected on the normally open contact of the intermediate relay are all communicated;

in the embodiment, the first driving motor 1 and the second driving motor 2 adopt brushless direct current motors, the first controller 40 and the second controller adopt brushless controllers, and the brushless direct current motors and the brushless controllers are all driving systems adopted by the battery cars on the market, so that the technology maturation cost is lower; the first speed regulating switch 44 and the second speed regulating switch 45 are knob type switch speed regulators and are used for simulating a handle signal on the battery car; when the corresponding driving motor is required to rotate reversely, the first controller 40 and the second controller 41 must receive the reverse signal and then receive the rotating handle signal to execute the reverse instruction of the corresponding driving motor, and the operation of switching the reverse gear and then twisting the rotating handle on the corresponding battery truck is performed, so as to prevent misoperation of a driver. The speed regulating switch replaces a rotating handle to send out a signal, and the time delay relay is connected with the speed regulating switch to simulate the time delay between the reverse gear shifting and the twisting of the rotating handle on the battery car, so that the reverse gear button and the rotating handle function on the electric car are realized by the operating rocker 5, and the operation is simpler and more visual.

In this embodiment, as shown in fig. 2, the vehicle further includes a battery 3 and a power master switch 31 for supplying power to the vehicle, the input end of the power master switch 31 is electrically connected to the battery 3, the output end of the power master switch 31 is electrically connected to the first controller 40, the second controller 41 and the voltage converter 33, and the voltage converter 33 is electrically connected to the control circuit of the first delay relay 42, the control circuit of the second delay relay 43, the first brake device 11 and the second brake device 21. The rated voltage of the battery 3 is 60V, and the output voltage of the voltage converter 33 is 24V. The battery 3 is further provided with a charging device 32 for charging the battery 3.

In this embodiment, as shown in fig. 2 and 4, the first driving motor 1 is provided with a first braking device 11, the second driving motor 2 is provided with a second braking device 21, and both the first braking device 11 and the second braking device 21 are electrically connected with the operating rocker 5. Wherein the first braking device 111 is mounted on the rear end cover of the first driving motor 1 for braking the motor shaft of the first driving motor 1. The second braking device 21 is mounted on the rear end cap of the second driving motor 2 for braking the motor shaft of the second driving motor 2.

In this embodiment, the first braking device 11 and the second braking device 21 are all electromagnetic brakes, and the electromagnetic brakes include a coil, an armature, a magnetic yoke, a brake disc and a spring, and the principle is that: when the coil is electrified, the coil generates a magnetic field to enable the armature to be attracted to the magnetic yoke, and the armature is separated (released) from the brake disc, so that the transmission shaft carries the brake disc to normally start up and operate; when the coil is deenergized, the magnetic flux disappears, the armature is released, the spring presses the armature, and the friction plate on the brake disc is pressed tightly, so that friction moment is generated, and the purpose of braking is achieved. When the operating rocker 5 is in the moving position, the first braking device 11 and the second braking device 21 are both electrified to cancel the braking of the driving motor, and when the operating rocker 5 is in the middle position, the first braking device 11 and the second braking device 21 are both powered off to brake the driving motor.

In this embodiment, as shown in fig. 1, the wheel set includes a first wheel 81 and a second wheel 82, the first wheel 81 is in driving connection with the second wheel 82, the first wheel 81 is provided with a first sprocket 83, the second wheel 82 is provided with a second sprocket 84, and the first wheel 81 and the second wheel 82 are in driving connection with each other through a chain 85 disposed on the first sprocket 83 and the second sprocket 84. The synchronous rotation of the first wheel 81 and the second wheel 82 is realized through chain transmission, so that the first driving motor 1 and the second driving motor 2 can realize the synchronous rotation of the left wheel set or the right wheel set only by driving one wheel of the first wheel 81 or the second wheel 82.

In this embodiment, as shown in fig. 2, the first driving motor 1 and the second driving motor 2 are both in transmission connection with their corresponding wheel sets through an axle 86. The axle 86 is a single-sided drive axle 86, which is capable of transmitting power from a correspondingly connected drive motor to only one of the left or right wheelsets.

In this embodiment, as shown in fig. 1, a ceiling 74 is provided on the top of the vehicle body 73. The ceiling 74 can function as a sunshade, a rain shield, a high-altitude drop prevention, etc. The frame 71 is provided with a foot pedal 72 for a worker to stand. The operator controls the travel of the electric forklift and the movement of the bucket assembly by operating the steering rocker 5 and the bucket rocker 64, respectively, on a foot pedal 72 that stands on.

In this embodiment, as shown in fig. 1, the bucket assembly includes a boom 62, a skip bucket 63, an oil cylinder, a hydraulic motor 61, and a bucket rocker 64, the skip bucket 63 is disposed on the boom 62, the skip bucket 63 and the boom 62 are driven by the oil cylinder, the oil cylinder is hydraulically connected with the hydraulic motor 61, and the bucket rocker 64 is used for inputting control signals of the hydraulic motor 61 and hydraulic oil distribution. The bucket rocker 64 is operated to control the hydraulic motor 61 to work and the hydraulic oil to be distributed, so that the tipping bucket oil cylinder and the movable arm oil cylinder respectively control the tipping bucket 63 to overturn and the movable arm 62 to lift and lower so as to bear materials.

In this embodiment, as shown in fig. 2, the output end of the power master switch 31 is further electrically connected to a hydraulic switch 60, the output end of the hydraulic switch 60 is electrically connected to a hydraulic motor 61, and the voltage converter 33 supplies power to the control circuit of the hydraulic switch 60. Providing the hydraulic switch 60 alone can reduce the power consumption of the battery 3 by the hydraulic bucket system when the bucket is not required to operate.

In the practice of the present utility model,

a worker stands on the foot pedal 72 and controls the travel of the electric forklift and the movement of the bucket assembly by operating the operating rocker 5 and the bucket rocker 64, respectively.

In the power-on process, the power main switch 31 is turned on, the contactor is controlled to connect the power supply with the first controller 40, the second controller 41 and the voltage converter 33, the first controller 40 and the second controller 41 respectively control the first driving motor 1 for driving the left wheel and the second driving motor 2 for driving the right wheel, wherein the voltage converter 33 converts the 60V voltage of the power supply into the 24V voltage to supply power for the contactors of the first delay relay 42, the second delay relay 43, the first braking device 11, the second braking device 21 and the hydraulic switch 60; the hydraulic switch 60 is connected to and disconnected from the hydraulic motor 61 by controlling the contactor.

When the operating rocker 5 rotates to an advanced position, the corresponding loops of the first speed regulating switch 44, the second speed regulating switch 45, the first braking device 11 and the second braking device 21 are communicated; the first braking device 11 releases the braking of the first driving motor 1; the second brake device 21 releases the brake of the second drive motor 2; while the first speed regulating switch 44 and the second speed regulating switch 45 are communicated, the first speed regulating switch 44 and the second speed regulating switch 45 respectively send out a handle signal, the first controller 40 controls the first driving motor 1 to rotate positively based on the handle signal of the first speed regulating switch 44, and the second controller 41 controls the first driving motor 1 to rotate positively based on the handle signal of the second speed regulating switch 45, so that the electric forklift can move forward.

When the operating rocker 5 rotates to the retreating position, the first braking device 11, the second braking device 21, the reverse signal receiving end of the first controller 40, the reverse signal receiving end of the second controller 41, the first delay relay 42 and the corresponding loop where the second delay relay 43 are located are all communicated; the first braking device 11 releases the braking of the first driving motor 1; the second brake device 21 releases the brake of the second drive motor 2; while the first delay relay 42 and the second delay relay 43 are communicated, the inversion signal receiving end of the first controller 40 and the inversion signal receiving end of the second controller 41 respectively receive inversion signals, then the first delay relay 42 and the second delay relay 43 are delayed for 0.5s to be communicated with the first speed regulating switch 44 and the second speed regulating switch 45 and respectively send out handle turning signals, the first controller 40 controls the inversion of the first driving motor 1 based on the inversion signals of the operating rocker 5 and the handle turning signals of the first speed regulating switch 44, and the second controller 41 controls the inversion of the second driving motor 2 based on the inversion signals of the operating rocker 5 and the handle turning signals of the second speed regulating switch 45, so that the electric forklift is retreated.

When the control rocker 5 rotates to the left turning position, the first braking device 11, the second braking device 21, the second speed regulating switch 45, the reverse signal receiving end of the first controller 40 and the corresponding loop where the first delay relay 42 is located are all communicated; the first braking device 11 releases the braking of the first driving motor 1; the second brake device 21 releases the brake of the second drive motor 2; while the second speed regulating switch 45 is communicated, the second speed regulating switch 45 sends out a handle signal, and the second controller 41 controls the second driving motor 2 to rotate forward based on the handle signal of the second speed regulating switch 45; while the first delay relay 42 is communicated, the inversion signal receiving end of the first controller 40 receives the inversion signal, then the first delay relay 42 delays for 0.5s and is communicated with the first speed regulating switch 44 to send out a handle signal, and the first controller 40 controls the first driving motor 1 to invert based on the inversion signal of the operating rocker 5 and the handle signal of the first speed regulating switch 44; to achieve a left turn of the electric forklift.

When the control rocker 5 rotates to the right position, the first braking device 11, the second braking device 21, the first speed regulating switch 44, the reverse signal receiving end of the second controller 41 and the corresponding loop where the second delay relay 43 is located are all communicated; the first braking device 11 releases the braking of the first driving motor 1; the second brake device 21 releases the brake of the second drive motor 2; while the first speed regulating switch 44 is communicated, the first speed regulating switch 44 sends out a handle signal, and the first controller 40 controls the first driving motor 1 to rotate forward based on the handle signal of the first speed regulating switch 44; while the second delay relay 43 is communicated, the inversion signal receiving end of the second controller 41 receives the inversion signal, then the second delay relay 43 delays for 0.5s and is communicated with the second speed regulating switch 45 to send out a handle turning signal, and the second controller 41 controls the second driving motor 2 to invert based on the inversion signal of the operating rocker 5 and the handle turning signal of the second speed regulating switch 45; to achieve a right turn of the electric forklift.

When the operating rocker 5 is reset to the middle position, the corresponding circuits of the first braking device 11 and the second braking device 21 are not communicated, and the first braking device 11 brakes the first driving electricity; the second brake device 21 brakes the second drive motor 2 to achieve a standstill of the electric forklift.

The above embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model.

Claims

1. An electric forklift with rocker controlled movement, comprising a frame (71), a body (73) arranged on the frame (71) and a bucket assembly arranged on the body (73), characterized in that it further comprises:

a drive system comprising a first drive motor (1) provided on a frame (71), a second drive motor (2) provided on the frame (71), a first controller (40) for controlling the first drive motor (1), a second controller (41) for controlling the second drive motor (2), and a manipulation rocker (5) for inputting a drive control signal;

the two sides of the frame (71) are symmetrically provided with wheel sets, wherein one side wheel set is in transmission connection with the first driving motor (1), and the other side wheel set is in transmission connection with the second driving motor (2).

2. The swing-controlled mobile electric forklift of claim 1, wherein the first controller (40) and the second controller (41) each have a handle signal receiving end, an inverted signal receiving end; the signal receiving end of the rotating handle of the first controller (40) is electrically connected with a first speed regulating switch (44), the first speed regulating switch (44) is electrically connected with a first delay relay (42), the signal receiving end of the rotating handle of the second controller (41) is connected with a second speed regulating switch (45), the second speed regulating switch (45) is electrically connected with a second delay relay (43), and the first delay relay (42), the second delay relay (43), the first speed regulating switch (44), the second speed regulating switch (45), the reverse signal receiving end of the first controller (40) and the reverse signal receiving end of the second controller (41) are electrically connected with an operating rocker (5).

3. The electric forklift controlled to move according to claim 2, characterized in that the first driving motor (1) is provided with a first braking device (11), the second driving motor (2) is provided with a second braking device (21), and both the first braking device (11) and the second braking device (21) are electrically connected with the operating rocker (5).

4. The electric forklift of claim 1, wherein said set of wheels comprises a first wheel (81) and a second wheel (82), said first wheel (81) being in driving connection with said second wheel (82).

5. The electric forklift controlled to move according to claim 4, wherein the first wheels (81) are provided with first chain wheels (83), the second wheels (82) are provided with second chain wheels (84), and the first wheels (81) and the second wheels (82) are in transmission connection through chains (85) arranged on the first chain wheels (83) and the second chain wheels (84).

6. The rocker-controlled mobile electric forklift of claim 1, wherein the first drive motor (1) and the second drive motor (2) are each in driving connection with their respective wheel sets via an axle (86).

7. The electric forklift controlled to move according to claim 1, characterized in that the bucket assembly comprises a boom (62), a skip bucket (63), an oil cylinder, a hydraulic motor (61) and a bucket rocker (64), the skip bucket (63) is arranged on the boom (62), the skip bucket (63) and the boom (62) are driven by the oil cylinder, the oil cylinder is hydraulically connected with the hydraulic motor (61), and the bucket rocker (64) is used for inputting a control signal of the hydraulic motor (61) and hydraulic oil distribution.

8. The swing-controlled mobile electric forklift of claim 1, wherein a roof (74) is provided on top of said body (73).

9. The electric forklift controlled movement according to claim 1, characterized in that the carriage (71) is provided with pedals (72) for the staff to stand on.