CN111439703A

CN111439703A - Electric brake pedal device of forklift

Info

Publication number: CN111439703A
Application number: CN202010310344.8A
Authority: CN
Inventors: 刘强; 章文誉; 熊国栋; 江博; 章健; 陈仕胜
Original assignee: Anhui Heli Co Ltd
Current assignee: Anhui Heli Co Ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-07-24
Anticipated expiration: 2040-04-20
Also published as: CN111439703B

Abstract

The invention discloses a forklift electric brake pedal device, which comprises a rack, wherein the rack is fixedly connected to a forklift bottom plate, and a pedal part and a sensor part are connected to the rack; the frame includes the bottom plate, fixedly connected with symmetrical arrangement's first link plate, second link plate on the bottom plate, footboard portion include fixed connection in dabber between first link plate, the second link plate, it is connected with the running-board to rotate on the dabber, the running-board is located stop gear top has cup jointed the footboard torsional spring in the spindle, and appearance structure, movement track, the mode of trampling etc. of the running-board of the electric brake pedal device that this application provided are similar with traditional hydraulic brake pedal, can satisfy driver's requirement, have fine adaptability, through setting up reasonable torsional spring resetting means, the strength of running-board feedback foot when having increased the braking makes the driver certain sense of touch when trampling the footboard, more accords with human-machine engineering.

Description

Electric brake pedal device of forklift

Technical Field

The invention relates to the technical field of forklift pedals, in particular to an electric brake pedal device for a forklift.

Background

The electric brake pedal is mainly used on a vehicle adopting an electromagnetic brake, belongs to an operating mechanism and is used for realizing the braking of the whole vehicle. The structure of the electric brake pedal adopted by the current electric forklift is basically the same as that of an electronic pedal accelerator.

The disadvantages of this arrangement are mainly: like the shape of pedal acceleration, is not conducive to differentiation; the structure is inconsistent with the rotation track of the traditional hydraulic brake pedal structure and the foot treading mode of a driver, so that the driver is not easy to adapt; the torsional rigidity at the pedal hinge is small, the feedback force given to the steps of the driver by the pedal during braking is small, and the feeling of the feet is poor.

Disclosure of Invention

The invention aims to provide an electric brake pedal device of a forklift to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a forklift electric brake pedal device comprises a rack, wherein the rack is fixedly connected to a forklift bottom plate, and a pedal part and a sensor part are connected to the rack;

the pedal part is arranged between the first hanging plate and the second hanging plate, and the bottom plate is provided with a limiting mechanism;

the pedal part comprises a mandrel fixedly connected between the first hanging plate and the second hanging plate, a pedal plate is rotatably connected onto the mandrel and positioned above the limiting mechanism, a pedal torsion spring is sleeved on the mandrel, one end of the pedal torsion spring is clamped on the pedal plate, and the other end of the pedal torsion spring is clamped on the first hanging plate or the second hanging plate;

the sensor part comprises a support fixedly connected to the bottom plate, a rotating shaft is connected to the support in a rotating mode, a rocker is fixedly connected to the rotating shaft, the top end of the rocker is located below the pedal, one end of the rotating shaft is connected with a sensor, and the sensor is fixedly connected with the support.

As a further scheme of the invention: the bottom plate is fixedly connected with a first limiting plate and a second limiting plate, one end, close to the first limiting plate, of the second limiting plate is connected with a limiting bolt, a locking nut is arranged on the limiting bolt, and the pedal plate is located between the first limiting plate and the second limiting plate.

As a further scheme of the invention: the second link plate is provided with a mandrel connecting hole and a mandrel fixing hole, the mandrel is inserted into the mandrel fixing hole, the end part of the mandrel is fixedly connected with a fixing plate, and the fixing plate is fixedly connected with the mandrel fixing hole through a fixing bolt.

As a further scheme of the invention: the upper end of the second hanging plate extends outwards to form a connecting plate, a plurality of rack fixing holes are formed in the connecting plate, and the connecting plate is fixedly connected to the lower end of the forklift base plate through the rack fixing holes and the bolts.

As a further scheme of the invention: the lower end of the pedal is fixedly connected with a connecting rod, the lower end of the connecting rod is fixedly connected with a rotary drum, the rotary drum is sleeved on the mandrel, and the rotary drum is rotatably connected with the mandrel.

As a further scheme of the invention: the pedal torsion spring comprises a first torsion spring and a second torsion spring which are arranged on two sides of the connecting rod, one end, close to the connecting rod, of each of the first torsion spring and the second torsion spring is connected to the connecting rod in a clamped mode, one end, far away from the connecting rod, of each of the first torsion spring is connected to the first hanging plate in a clamped mode, and one end, far away from the connecting rod, of the second torsion spring is connected to the second hanging plate in a clamped mode.

As a further scheme of the invention: the support through a plurality of construction bolt fixed connection in on the bottom plate, the pivot is through pivot third torsional spring and leg joint, pivot third torsional spring cup joint in the pivot, the both ends of pivot third torsional spring respectively with rocker, support fixed connection.

As a further scheme of the invention: the top end of the rocker is rotatably connected with a pulley, and the pulley is positioned below the connecting rod.

As a further scheme of the invention: the sensor includes with pivot fixed connection's magnetic substance and pencil.

Compared with the prior art, the invention has the beneficial effects that:

1. the application provides an appearance structure, movement track, the mode of trampling etc. of electric brake pedal device's running-board are similar with traditional hydraulic brake pedal, can satisfy driver's requirement, have fine adaptability.

2. This application is through setting up reasonable torsional spring resetting means, and the strength of running-board feedback foot when having increased the braking makes the driver certain sense of touch when trampling the footboard, more accords with ergonomic.

3. The rotation angle of the sensor magnetic body is 60 degrees, and the sensor magnetic body is the same as the output signal curve of most electric brake pedal sensors on the market at present, and the type selection is convenient.

4. The brake pedal can be conveniently arranged on a bottom plate of the forklift, so that the space of a driving cabin of the forklift is saved; the electric brake pedal is in a modular design and convenient to detach and maintain.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is a schematic view of the rack structure of the present application;

FIG. 3 is a schematic view of the pedal structure of the present application;

FIG. 4 is a schematic view of a sensor according to the present application;

fig. 5 is a schematic view of a usage state of the present application.

In the figure: 1-frame, 11-bottom plate, 12-first hanging plate, 13-second hanging plate, 131-mandrel connecting hole, 132-mandrel fixing hole, 133-frame fixing hole, 14-first limiting plate, 15-second limiting plate, 16-limiting bolt, 17-locking nut, 2-pedal part, 21-pedal, 22-connecting rod, 23-rotating drum, 24-mandrel, 25-first torsion spring, 26-second torsion spring, 27-fixing plate, 28-fixing bolt, 29-bearing, 3-sensor part, 31-bracket, 32-pulley, 33-rocker, 34-sensor, 341-magnetic body, 342-wire harness, 35-rotating shaft, 36-third torsion spring, 37-mounting bolt, 4-forklift base plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, in the embodiment of the present invention, a forklift electric brake pedal device includes a frame 1, the frame 1 is fixedly connected to a forklift bottom plate 4, and the frame 1 is connected to a pedal portion 2 and a sensor portion 3;

frame 1 includes bottom plate 11, fixedly connected with symmetrical arrangement's first link plate 12 on bottom plate 11, second link plate 13, first link plate 12, second link plate 13 upper end extends the formation connecting plate to the outside, a plurality of frame fixed orifices 133 have been seted up on the connecting plate, the connecting plate passes through frame fixed orifices 133, bolt fixed connection is in 4 lower extremes of fork truck bottom plate, when the installation, the bolt passes frame

fixed orifices

133 and 4 lower extreme fixed connection of fork truck bottom plate, the footboard is by connecting rod 22 in 2, running-board 21 passes fork truck bottom plate 4 and extends to 4 tops of fork truck bottom plate. Second link plate 13 is gone up and is begun to have dabber connecting hole 131 and dabber fixed orifices 132, dabber 24 is pegged graft in dabber

fixed orifices

132, 24 tip of dabber set firmly and is connected with fixed plate 27, fixed plate 27 passes through fixing bolt 28 and dabber fixed orifices 132 fixed connection, second link plate 13 is gone up and is begun to have dabber connecting hole 131 and dabber fixed orifices 132, dabber 24 is pegged graft in dabber

fixed orifices

132, 24 tip of dabber set firmly and is connected with fixed plate 27, fixed plate 27 passes through fixing bolt 28 and dabber fixed orifices 132 fixed connection.

Running-board 21 and connecting rod 22 set up in first link plate 12, between second link plate 13, be equipped with stop gear on bottom plate 11, the first limiting plate 14 of fixedly connected with on the bottom plate 11, second limiting plate 15, the one end that second limiting plate 15 is close to first limiting plate 14 is connected with stop bolt 16, the last lock nut 17 that is equipped with of stop bolt 16, running-board 21 is located first limiting plate 14, between the second limiting plate 15, therefore when stepping on running-board 21, connecting rod 22 rotates around dabber 24, the rotation range of connecting rod 22 is located between stop bolt 16 on first limiting plate 14 and the second limiting plate 15, in this embodiment, the turned angle of connecting rod 22 is 25.

Footboard portion 2 includes fixed connection in first link plate 12, dabber 24 between the second link plate 13, it is connected with running-board 21 to rotate on the dabber 24, running-board 21 lower extreme fixedly connected with connecting rod 22, connecting rod 22 lower extreme fixedly connected with rotary drum 23, rotary drum 23 cup joints on dabber 24, rotary drum 23 rotates with dabber 24 to be connected, the footboard torsional spring has been cup jointed on the dabber 24, the footboard torsional spring is including setting up in the first torsional spring 25 of connecting rod 22 both sides, second torsional spring 26. first torsional spring 25, the one end joint that second torsional spring 26 is close to connecting rod 22 is on connecting rod 22, the one end joint that connecting rod 22 was kept away from to first torsional spring 25 is on first link plate 12, the one end joint that connecting rod 22 was kept away from to second torsional spring 26 is.

The sensor part 3 comprises a bracket 31 fixedly connected to the bottom plate 11, the bracket 31 is fixedly connected to the bottom plate 11 through a plurality of mounting bolts 37, a plurality of threaded holes 111 are arranged on the bottom plate 11, the mounting bolts 37 are in bolted connection with the threaded holes 111, a rotating shaft 35 is connected with the bracket 31 through a rotating shaft third torsion spring 36, the rotating shaft third torsion spring 36 is sleeved on a rotating shaft 35, two ends of the rotating shaft third torsion spring 36 are respectively fixedly connected with a rocker 33 and the bracket 31, the rotating shaft 35 is rotatably connected to the bracket 31, a rocker 33 is fixedly connected to the rotating shaft 35, a pulley 32 is rotatably connected to the top end of the rocker 33, the pulley 32 is positioned below a connecting rod 22, when the connecting rod 22 rotates, the pulley 32 extrudes the pulley 32, the rocker 33 is driven to rotate while rotating, the rocker 33 is driven to rotate by the rocker 33, one end of the rotating shaft 35 is connected with, sensor 34 includes magnetic substance 341 and pencil 342 with pivot 35 fixed connection, drives magnetic substance 341 through pivot 35 and rotates, and in this embodiment, the turned angle of magnetic substance 341 is 60, and when magnetic substance 341 rotated, the effect of sensor 34 down converts mechanical rotation into the signal of telecommunication, and through pencil 342, the signal of telecommunication was conveyed to fork truck's controller, and the work of electromagnetic braking ware on the controller trigger motor is locked the motor main shaft to realize whole car braking.

When the brake is used, when braking is needed, a driver steps on the pedal 21, the connecting rod 22 rotates around the spindle 24 under the pushing of the pedal 21, meanwhile, the first torsion spring 25 and the second torsion spring 26 between the spindle 24 and the connecting rod 22 are compressed, the connecting rod 22 rotates downwards to extrude the pulley 32, the rocker 33 and the rotating shaft 35 are pushed by the pulley 32 to rotate when pressure is received, the magnetic body 341 is driven to rotate through the rotating shaft 35, the third torsion spring 36 is also compressed, mechanical rotation is converted into an electric signal under the action of the Hall sensor 34 when the magnetic body 341 rotates, the electric signal is transmitted to a controller of a forklift through a wire harness, the controller triggers an electromagnetic brake on a motor to work, a main shaft of the motor is locked, and the braking of the whole forklift is achieved. When the foot of the driver releases the pedal 21, the pedal 21 starts to return to the original position under the action of the first torsion spring 25, the second torsion spring 26 and the third torsion spring 36, and when the connecting rod 22 abuts against the limit bolt 16.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A forklift electric brake pedal device comprises a rack (1), wherein the rack (1) is fixedly connected to a forklift bottom plate (4), and is characterized in that a pedal part (2) and a sensor part (3) are connected to the rack (1);

the pedal part (2) is arranged between the first hanging plate (12) and the second hanging plate (13), and the bottom plate (11) is provided with a limiting mechanism;

the pedal part (2) comprises a mandrel (24) fixedly connected between the first hanging plate (12) and the second hanging plate (13), a pedal plate (21) is rotatably connected onto the mandrel (24), the pedal plate (21) is positioned above the limiting mechanism, a pedal torsion spring is sleeved on the mandrel (24), one end of the pedal torsion spring is clamped on the pedal plate (21), and the other end of the pedal torsion spring is clamped on the first hanging plate (12) or the second hanging plate (13);

sensor portion (3) including fixed connection in support (31) on bottom plate (11), it is connected with pivot (35) to rotate on support (31), fixedly connected with rocker (33) on pivot (35), rocker (33) top is located running-board (21) below, pivot (35) one end is connected with sensor (34), sensor (34) with support (31) fixed connection.

2. The electric brake pedal device for the forklift as recited in claim 1, wherein a first limiting plate (14) and a second limiting plate (15) are fixedly connected to the bottom plate (11), a limiting bolt (16) is connected to one end of the second limiting plate (15) close to the first limiting plate (14), a locking nut (17) is arranged on the limiting bolt (16), and the pedal (21) is located between the first limiting plate (14) and the second limiting plate (15).

3. The electric brake pedal device for the forklift as recited in claim 1, wherein the second hanging plate (13) is provided with a mandrel connecting hole (131) and a mandrel fixing hole (132), the mandrel (24) is inserted into the mandrel fixing hole (132), the end of the mandrel (24) is fixedly connected with a fixing plate (27), and the fixing plate (27) is fixedly connected with the mandrel fixing hole (132) through a fixing bolt (28).

4. The electric brake pedal device for the forklift as recited in claim 1, wherein the upper end of the second hanging plate (13) extends outwards to form a connecting plate, a plurality of frame fixing holes (133) are formed in the connecting plate, and the connecting plate is fixedly connected to the lower end of the forklift bottom plate (4) through the frame fixing holes (133) and bolts.

5. The electric brake pedal device for the forklift as recited in claim 1, wherein a connecting rod (22) is fixedly connected to a lower end of the pedal (21), a rotating drum (23) is fixedly connected to a lower end of the connecting rod (22), the rotating drum (23) is sleeved on the spindle (24), and the rotating drum (23) is rotatably connected with the spindle (24).

6. The electric brake pedal device for the forklift as recited in claim 5, wherein the pedal torsion spring comprises a first torsion spring (25) and a second torsion spring (26) which are arranged on two sides of the connecting rod (22), one end of each of the first torsion spring (25) and the second torsion spring (26) close to the connecting rod (22) is connected to the connecting rod (22) in a clamped manner, one end of each of the first torsion spring (25) far away from the connecting rod (22) is connected to the first hanging plate (12) in a clamped manner, and one end of each of the second torsion spring (26) far away from the connecting rod (22) is connected to the second hanging plate (13) in a clamped manner.

7. The electric brake pedal device for the forklift as recited in claim 1, wherein the bracket (31) is fixedly connected to the base plate (11) through a plurality of mounting bolts (37), the rotating shaft (35) is connected to the bracket (31) through a third rotating shaft torsion spring (36), the third rotating shaft torsion spring (36) is sleeved on the rotating shaft (35), and two ends of the third rotating shaft torsion spring (36) are respectively fixedly connected to the rocker (33) and the bracket (31).

8. A forklift electric brake pedal device as defined in claim 5, wherein a pulley (32) is rotatably connected to the top end of said rocker (33), said pulley (32) being located below said link (22).

9. The electric brake pedal device for forklift according to claim 1, wherein the sensor (34) includes a magnetic body (341) fixedly connected to the rotary shaft (35) and a wire harness (342).