CN219620798U

CN219620798U - Electric hand brake device of forklift

Info

Publication number: CN219620798U
Application number: CN202320100998.7U
Authority: CN
Inventors: 张瑞峰
Original assignee: Qingdao Haijiyuan Technology Equipment Co ltd
Current assignee: Qingdao Haijiyuan Technology Equipment Co ltd
Priority date: 2023-02-02
Filing date: 2023-02-02
Publication date: 2023-09-01
Anticipated expiration: 2033-02-02

Abstract

The utility model provides an electric hand brake device of a forklift, which comprises: the motor drives the screw rod to rotate through the reduction gear set, the balance lifter is in threaded fit with the screw rod and used for achieving lifting movement when the screw rod rotates, and two sides of the balance lifter are respectively used for connecting left and right hand brake stay wires. The utility model can solve the problems of laborious hand braking, inconvenient left hand operation and the like of the traditional forklift.

Description

Electric hand brake device of forklift

Technical Field

The utility model mainly relates to the technical field related to forklift accessories, in particular to an electric hand brake device of a forklift.

Background

The vast majority of hand brake structures configured by the existing forklift are manual mechanical stay wire type brakes (electromagnetic brakes are also arranged on small electric vehicles), and for the structure adopting the manual mechanical stay wire type brakes, the hand brake structure needs 20KGF-30KGF force to operate manually during use, and is extremely laborious to use. In operation, most of the brake is operated by left hand, the manual mechanical stay wire type brake structure of the traditional brake configuration is often not braked due to inconvenient operation and laborious operation, and great potential safety hazards exist.

Therefore, it is necessary to design a brake structure capable of conveniently realizing parking of a forklift, so that the brake structure can be configured in the brake structure of the forklift, and the manual mechanical stay wire brake structure of the existing forklift can be conveniently modified and applied.

Disclosure of Invention

In order to solve the defects of the prior art, the utility model combines the prior art, and provides the electric hand brake device of the forklift from practical application, which can solve the problems of laborious hand brake, inconvenient left hand operation and the like of the traditional forklift.

The technical scheme of the utility model is as follows:

an electric hand brake device of a forklift, comprising: the motor drives the screw rod to rotate through the reduction gear set, the balance lifter is in threaded fit with the screw rod and used for achieving lifting movement when the screw rod rotates, and two sides of the balance lifter are respectively used for connecting left and right hand brake stay wires.

Further, the lead screw is a trapezoidal lead screw, and trapezoidal threads matched with the lead screw are arranged on the balance lifter.

Further, the top end of the balance lifter is provided with an arc groove, a flexible connecting piece is arranged in the arc groove, and two ends of the flexible connecting piece extend out of the arc groove to be used for connecting a hand brake stay wire.

Further, the flexible connection unit is a section of chain.

Further, the two ends of the chain are respectively connected with the hand brake stay wire through a hanging tool.

Further, the hand brake device further comprises a base body, the motor is fixedly arranged in a motor installation groove formed in the base body, the reduction gear set is arranged on the base body, the screw rod is rotatably arranged in a screw rod installation groove formed in the base body, and the lower end of the balance lifter is slidably arranged in a balance lifter installation groove formed in the base body.

Further, the reduction gear set comprises a driving gear, a first duplex gear, a second duplex gear and a driven gear;

the driving gear is connected to the motor output shaft, the first duplex gear is connected to the driving gear, the second duplex gear is connected to the first duplex gear, the driven gear is connected to the second duplex gear, the screw rod is connected to the driven gear, and the driving gear, the first duplex gear, the second duplex gear and the driven gear are sequentially decelerated.

Further, a first radial bearing and a first thrust bearing are arranged at the shaft diameter of one side of the driven gear on the lead screw, and a second radial bearing and a second thrust bearing are arranged at the shaft diameter of the other side of the driven gear on the lead screw.

Further, the gear box comprises a bottom cover, wherein the bottom cover is used for packaging the gear box in the base body, the first radial bearing and the first thrust bearing are arranged in corresponding mounting grooves of the bottom cover, and the second radial bearing and the second thrust bearing are arranged in corresponding mounting grooves of the base body.

Further, the hand brake cable tightening and loosening device also comprises a PLC controller, wherein the PLC controller is used for controlling the motor to act, so that tightening and loosening control of the hand brake cable is realized.

The utility model has the beneficial effects that:

1. the utility model can solve the problems of laborious hand brake of the forklift, inconvenient left hand operation and the like, and adopts the PLC, the motor, the reduction gear, the trapezoidal screw rod, the balancer and the like to pull the hand brake stay wire to achieve 300KGF, so that the hand brake can be pulled tightly by one key, flameout (stopping working of the forklift) is automatically pulled up, the hand brake is not afraid of forgetting to be pulled, a forklift driver leaves a seat, and the hand brake of the forklift is automatically pulled up, and no safety accident is caused.

2. The hand brake device provided by the utility model can be used for directly modifying the traditional fork truck mechanical stay wire type hand brake, and the hand brake device can be easily modified under the condition of not changing other brake structures by connecting the device to the hand brake cable with the traditional structure, so that the hand mechanical brake mode is updated to an automatic brake mode.

3. The electric hand brake device provided by the utility model has the advantages that the whole structure is simple and reasonable in design, the assembly is quick and convenient, the braking force is ensured through the cooperation of a plurality of reduction gears, and the stable operation of the structure is ensured through the arrangement of the thrust bearing and the radial bearing.

4. The electric hand brake device provided by the utility model adopts the structure of the balance lifter, so that the left and right stay wires can be pulled up in an equilibrium manner, the stability of braking is ensured, the trapezoidal screw rod is automatically locked and tensioned and cannot be loosened, the balance lifter is simple to manufacture and process in a mode of matching the arc-shaped groove with a chain, the chain can move flexibly, the balance lifter can slide better, the stay wires are installed conveniently, and the stay wires can be hung on the balance lifter firstly and then are sleeved on the balance lifter integrally during use.

Drawings

FIG. 1 is a schematic view of the present utility model in use.

Fig. 2 is a schematic diagram of a driving portion structure of the present utility model.

Fig. 3 is a schematic diagram of a driving portion structure of the present utility model.

Fig. 4 is a schematic view of a base structure of the present utility model.

FIG. 5 is a schematic diagram of a reduction gear set according to the present utility model.

Fig. 6 is a schematic view of a driving part sectional structure of the present utility model.

Fig. 7 is a schematic circuit diagram of the present utility model.

The reference numerals shown in the figures: 1. a base; 2. a balancing jack; 3. a flexible connection member; 4. a hanging tool; 5. hand brake stay wire; 6. a bottom cover; 7. a motor; 8. an arc-shaped groove; 9. a screw rod; 10. a motor mounting groove; 11. a balancing jack mounting slot; 12. a drive gear; 13. a first double gear; 14. a second duplex gear; 15. a driven gear; 16. a first radial bearing; 17. a first thrust bearing; 18. a second radial bearing; 19. and a second thrust bearing.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and specific embodiments. It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it will be understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the utility model, and equivalents thereof fall within the scope of the utility model as defined by the claims.

The embodiment provides an electric hand brake device of fork truck, and it is main to solve the mechanical hand brake operation that present fork truck used and is hard, the inconvenient problem of operation, through this electric hand brake device, can realize the automatic control of fork truck parking, and the operation is laborsaving convenient.

As shown in fig. 1 to 6, the electric hand brake device of the present embodiment mainly includes: a motor 7, a reduction gear set, a screw 9, a balance lifter 2, and the like. The motor 7 is connected to the screw 9 through a reduction gear set, by means of which on the one hand a reduction can be achieved and on the other hand the torque of the screw 9 can be increased. The bottom of the balance lifter 2 and the screw rod 9 are in threaded fit, and the balance lifter 2 is limited in the circumferential direction, so that the balance lifter 2 can be driven to move up and down in the rotation process of the screw rod 9. The two sides of the balance lifter 2 can be connected to the hand brake stay wires 5 of the forklift respectively, and then the hand brake stay wires 5 can be tensioned or loosened in the lifting process of the balance lifter 2, and the purpose of saving labor and automatically parking is achieved by replacing manual operation through the driving of the motor 7.

In this embodiment, in order to ensure structural stability, the screw rod 9 is designed into a trapezoidal thread structure, and the trapezoidal screw rod is not loosened after being automatically locked and tensioned. Meanwhile, in order to ensure that the left hand brake stay wire 5 and the right hand brake stay wire 5 can be balanced and pulled to improve the stability of the brake, in the embodiment, the top end of the balance lifter 2 is provided with an arc groove 8, a flexible connecting piece 3 is arranged in the arc groove 8, two ends of the flexible connecting piece 3 extend out of the arc groove 8 and are respectively connected with a hanging tool 4, and the hanging tool 4 is used for connecting the hand brake stay wires 5. Further, the flexible connecting member 3 preferably adopts a chain structure. The chain structure has flexibility and can bend, can better slip on balanced jack 2, and installation hand brake is acted as go-between 5 also very convenient, can be earlier to act as go-between and hang on hanger 4 during the use, then whole cover is on balanced jack 2, and balanced jack 2 rises the in-process, and arc groove 8 at top rises, drives the chain and rises, and the hanger 4 through both sides pulls two hand brake and acts as go-between 5 and rise, realizes balanced synchronous tensioning.

In the present embodiment, the above-described structure is integrally provided on the seat body 1. As shown in the figure, the upper surface of the base body 1 is provided with a motor mounting groove 11 and a balance lifter mounting groove 11, a screw rod mounting groove is formed in the base body, the motor mounting groove 11 is adaptive to the size of the motor 7 and used for fixing the motor, the balance lifter mounting groove 11 adopts a rectangular groove structure, the bottom of the balance lifter 2 is rectangular, the sliding mounting is arranged in the balance lifter mounting groove 11, the rectangular structural design is convenient to install, and the periphery of the balance lifter 2 can be limited, so that the balance lifter 2 can flexibly move up and down in the screw rod 9 rotating process by matching with screw threads of the screw rod 9.

The bottom surface of the seat body 1 is provided with a mounting groove. The installation groove is mainly used for installing a reduction gear set. The specific reduction gear set comprises a driving gear 12, a first duplex gear 13, a second duplex gear 14 and a driven gear 15 which are sequentially meshed with each other; the driving gear 12 is connected to the output shaft of the motor 7, and the driven gear 15 is connected to the lead screw 9. Specifically, offer the polygon fluting on driven gear 15, set up the polygon axle journal that a section suited on the lead screw, the axle journal cooperates with the polygon fluting, realizes the processing of torsion, and then can drive the nimble rotation of lead screw 9 when driven gear 15 rotates.

As shown in fig. 6, in the present embodiment, a bottom cover 6 is installed at the bottom of the base 1, and the gear set is enclosed by the bottom cover 6. The bottom cover 6 is connected with the base body 1 through screws. In order to ensure the stability of the movement of the lead screw 9, in this embodiment, a first radial bearing 16 and a first thrust bearing 17 are disposed on the lead screw 9 at the shaft diameter of one side of the driven gear 15, a second radial bearing 18 and a second thrust bearing 19 are disposed at the shaft diameter of the other side of the driven gear 15, the first radial bearing 16 and the first thrust bearing 17 are disposed in corresponding mounting grooves of the bottom cover 6, and the second radial bearing 18 and the second thrust bearing 19 are disposed in corresponding mounting grooves of the seat body 1. The structure of this implementation can make things convenient for the equipment of this manual brake device. In the actual assembly process, the motor 7 and the driving gear 12 are installed, the first duplex gear 13, the second duplex gear 14 and the driven gear 15 are installed in sequence, the second radial bearing 18 and the second thrust bearing 19 are installed, the screw rod 9 and the balance lifter 2 are installed, and finally the first radial bearing 16 and the first thrust bearing 17 are installed along with the bottom cover 6.

The present embodiment also provides a PLC controller, whose circuit structure is shown in fig. 7. The PLC controller is connected to the operating button and the running state of the forklift, namely the motor 7, and the PLC controller can control the strength of the motor 7, the start-stop state of the motor 7 and the like based on the running state of the forklift. If the operating button is pressed down, the motor 7 is started to realize one-key tensioning and braking, and when the PLC detects that the forklift is flameout, the motor 7 is automatically started to realize tensioning and braking. The corresponding sensor can be arranged on the forklift and used for detecting personnel on the forklift, when a driver leaves a forklift seat, after the PLC detects corresponding signals, the motor 7 is started to automatically brake and park, and therefore installation accidents can be avoided.

Claims

1. An electric hand brake device of a forklift, comprising: the motor drives the screw rod to rotate through the reduction gear set, the balance lifter is in threaded fit with the screw rod and used for achieving lifting movement when the screw rod rotates, and two sides of the balance lifter are respectively used for connecting left and right hand brake stay wires.

2. The forklift electric hand brake device according to claim 1, wherein the screw is a trapezoidal screw, and the balancing lifter is provided with trapezoidal threads matched with the screw.

3. The forklift electric hand brake device according to claim 1, wherein the top end of the balance lifter is provided with an arc groove, a flexible connecting piece is arranged in the arc groove, and two ends of the flexible connecting piece extend out of the arc groove to be used for connecting a hand brake stay wire.

4. A forklift electric hand brake device according to claim 3, wherein the flexible connection is a length of chain.

5. The electric hand brake device of claim 4, wherein the two ends of the chain are respectively connected with the hand brake pull wire through a hanger.

6. The forklift electric hand brake device according to claim 1, further comprising a base, wherein the motor is fixedly mounted in a motor mounting groove formed in the base, the reduction gear set is mounted on the base, the screw is rotatably mounted in a screw mounting groove formed in the base, and the lower end of the balance lifter is slidably mounted in a balance lifter mounting groove formed in the base.

7. The forklift electric hand brake device of claim 6, wherein said reduction gear set comprises a driving gear, a first duplex gear, a second duplex gear, and a driven gear;

8. The forklift electric hand brake device according to claim 7, wherein a first radial bearing and a first thrust bearing are arranged on the lead screw at the shaft diameter position on one side of the driven gear, and a second radial bearing and a second thrust bearing are arranged on the lead screw at the shaft diameter position on the other side of the driven gear.

9. The forklift electric hand brake device of claim 8, further comprising a bottom cover for encapsulating the reduction gear set in the housing, the first radial bearing and the first thrust bearing being disposed in respective mounting slots of the bottom cover, and the second radial bearing and the second thrust bearing being disposed in respective mounting slots of the housing.

10. The electric hand brake device of a forklift of any one of claims 1 to 9, further comprising a PLC controller for controlling the motor to act, thereby effecting tightening and loosening control of the hand brake cable.