CN201704033U

CN201704033U - Electric forklift

Info

Publication number: CN201704033U
Application number: CN2010201537726U
Authority: CN
Inventors: 张波
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-01
Filing date: 2010-04-01
Publication date: 2011-01-12
Anticipated expiration: 2020-04-01

Abstract

The utility model discloses an electric forklift with low energy consumption, high efficiency, simple structure and convenient use. A gear pump is connected with a transmission shaft of a motor in a transmission manner. An oil tank is fixedly arranged on a forklift frame. The gear pump is communicated with the oil tank. A lifting cylinder is fixedly connected between a movable door shelf and an immovable door shelf. A lifting pipe is communicated between the lifting cylinder and the oil tank. A tilting cylinder is fixedly connected between the immovable door shelf and the forklift frame. A tilting pipe is communicated between the tilting cylinder and the oil tank. A multi-way valve is communicated between the lifting pipe and the tilting pipe. A lifting rod and a tilting rod are arranged on the multi-way valve. The lifting rod is corresponding to the lifting pipe. A lifting operating rod is connected on the lifting rod. The tilting rod is corresponding to the tilting pipe. A tilting operating rod is connected on the tilting rod. A rear axle is connected with a rear wheel through a hinge. A steering cylinder is fixedly connected between the rear axle and the rear wheel. A steering pipe is communicated between the steering cylinder and the oil tank. A steering gear is arranged on the steering pipe.

Description

Electri forklift

Technical field

The utility model relates to a kind of fork truck, relates in particular to a kind of electri forklift.

Background technology

Its propulsion source of electri forklift common on the market generally is made of three DC machine, one is movable motor, one is the lifting motor, another is a steer motor, owing to use multiple electric motors, this kind fork truck complete machine power height (gross horsepower is about 12KW), energy consumption height, battery life is short, efficient is low, and electrical controller is very complicated, the fault rate height; And because propulsion source is many, so vibration source is many, very easily resonates with accumulator box, vehicle frame, has a strong impact on the result of use of electri forklift.

Summary of the invention

The purpose of this utility model provides the electri forklift that a kind of energy consumption is low, efficient is high, simple in structure, easy to use.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of electri forklift comprises vehicle frame, and the vehicle frame front portion is fixedly connected with propons, and front-wheel is installed on the propons, and the vehicle frame rear portion is fixedly connected with back axle, and trailing wheel is installed on the back axle; The vehicle frame front end is hinged with fixedly door frame, fixedly slides up and down on the door frame to be connected with movable door frame, slides up and down on the movable door frame and is connected with sliding rack, and pallet fork is installed on the sliding rack; Be installed with motor on the vehicle frame, motor is connected with described traction avant; Be fixedly connected with accumulator box on the vehicle frame, be provided with storage battery in the accumulator box, storage battery links to each other with described motor by circuit, it is characterized in that: be connected with gear type pump on the drive axle of motor, be installed with fuel tank on the vehicle frame, gear type pump communicates with fuel tank; Described movable door frame and fixedly be fixedly connected with the lifting cylinder between the door frame, be communicated with the lifting pipeline between lifting cylinder and the fuel tank, fixedly be fixedly connected with inclined cylinder between door frame and the vehicle frame, be communicated with the inclination pipeline between inclined cylinder and the fuel tank, be communicated with multiway valve on lifting pipeline and the inclination pipeline, multiway valve is provided with lifting arm and tilting bar, lifting arm is corresponding with the lifting pipeline, be connected with the lifting joystick on the lifting arm, tilting bar is corresponding with the inclination pipeline, is connected with the bank control bar on the tilting bar; Described back axle and trailing wheel are fixedly connected with steering cylinder for being hinged and connected between back axle and the trailing wheel, are communicated with between steering cylinder and the fuel tank and turn to pipeline, turn to and are communicated with deflector on the pipeline.

According to described electri forklift, it is characterized in that: be connected with driving pulley on the described drive axle of motor, be connected with change speed gear box on the described propons, change speed gear box one side is connected with driven pulley, and driving pulley is connected by belt-driving with driven pulley.

According to described electri forklift, it is characterized in that: be connected with change-speed box between described motor and the driving pulley.

According to described electri forklift, it is characterized in that: be installed with fixed mount on the described motor, described driving pulley and change-speed box are positioned at fixed mount.

According to described electri forklift, it is characterized in that: be fixedly connected with fixed pulley on the described movable door frame, be connected with chain on the fixed pulley, a wherein end and the described sliding rack of chain are fixedly linked.

According to described electri forklift, it is characterized in that: be installed with overhead guard above the described vehicle frame.

According to described electri forklift, it is characterized in that: described vehicle frame rear end is installed with counterweight.

The utility model only uses a DC machine as propulsion source, and direct drive fork truck propons advances or retreats, and is by the lifting and the fork-truck steering of multiway valve, hydraulic actuating cylinder control pallet fork, simple in structure, easy to use; Gear type pump and motor output assembly are direct-connected, have reduced vibration, greatly reduce energy resource consumption, make the flying power of storage battery that large increase arranged, and work efficiency improves.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the connection structure scheme drawing of motor and gear type pump among Fig. 1;

Fig. 3 is a hydraulic structure scheme drawing of the present utility model;

Fig. 4 is a speed-changing mechanism structural representation of the present utility model;

Fig. 5 is the structural representation of adapter sleeve among Fig. 2;

Fig. 6 is the structural representation of Fig. 2 centre bearer supporting base.

In the accompanying drawing:

1, movable door frame 2, lifting cylinder 3, gear change hand lever 4, fixedly door frame 5, inclined cylinder

6, sliding rack 7, pallet fork 8, propons 9, change speed gear box 10, motor

11, vehicle frame 12, fuel tank 13, back axle 14, steering cylinder 15, tailstock

16, storage battery 17, counterweight 18, accumulator box 19, electric box 20, parking brake

21, seat 22, lifting joystick 23, overhead guard 24, bank control bar 25, bearing circle

26, change-speed box 27, fixed mount 28, driving pulley 29, adapter sleeve 30, bearing block

31, gear type pump 32, adapter plate 33, bearing 34, circular nut 35, deflector

36, driven pulley 37, lifting arm 38, tilting bar 39, multiway valve 40, inclination pipeline

41, lifting pipeline 42, turn to pipeline 43, operating handle 44, acorn nut 45, upper handle

46, lower handle 47, fixed cover 48, connector bushing 49, adapter shaft 50, upper collet

51, pin 52, following locking plate 53, jam nut 54, lock ball

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further described:

A kind of electri forklift as Fig. 1, Fig. 2, shown in Figure 3, comprises vehicle frame 11, and vehicle frame 11 front portions are fixedly connected with propons 8, on the propons 8 front-wheel are installed, and vehicle frame 11 rear portions are fixedly connected with back axle 13, on the back axle 13 trailing wheel are installed; Vehicle frame 11 front ends are hinged with fixedly door frame 4, fixedly slide up and down on the door frame 4 to be connected with movable door frame 1, slide up and down on the movable door frame 1 and are connected with sliding rack 6, and pallet fork 7 is installed on the sliding rack 6; Be installed with motor 10 on the vehicle frame 11, motor 10 is connected with described traction avant; Be fixedly connected with accumulator box 18 on the vehicle frame 11, be provided with storage battery 16 in the accumulator box 18, storage battery 16 links to each other with described motor 10 by circuit, is connected with gear type pump 31 on the transmission shaft of motor 10, be installed with fuel tank 12 on the vehicle frame 11, gear type pump 31 communicates with fuel tank 12; Described movable door frame 1 and fixedly be fixedly connected with lifting cylinder 2 between the door frame 4, be communicated with lifting pipeline 41 between lifting cylinder 2 and the fuel tank 12, fixedly be fixedly connected with inclined cylinder 5 between door frame 4 and the vehicle frame 11, be communicated with inclination pipeline 40 between inclined cylinder 5 and the fuel tank 12, be communicated with multiway valve 39 on lifting pipeline 41 and the inclination pipeline 40, multiway valve 39 is provided with lifting arm 37 and tilting bar 38, lifting arm 37 is corresponding with lifting pipeline 41, be connected with lifting joystick 22 on the lifting arm 37, tilting bar 38 is corresponding with inclination pipeline 40, is connected with bank control bar 24 on the tilting bar 38; Described back axle 13 and trailing wheel are fixedly connected with steering cylinder 14 for being hinged and connected between back axle 13 and the trailing wheel, be communicated with between steering cylinder 14 and the fuel tank 12 and turn to pipeline 42, turn to and are communicated with deflector 35 on the pipeline 42.

Be connected with driving pulley 28 on the transmission shaft of described motor 10, be connected with change speed gear box 9 on the described propons 8, change speed gear box 9 one sides are connected with driven pulley 36, and driving pulley 28 and driven pulley 36 are connected by belt-driving.Be connected with change-speed box 26 between described motor 10 and the driving pulley 28.Be installed with fixed mount 27 on the described motor 10, described driving pulley 28 and change-speed box 26 are positioned at fixed mount 27.

Be fixedly connected with fixed pulley on the described movable door frame 1, be connected with chain on the fixed pulley, a wherein end and the described sliding rack 6 of chain are fixedly linked.Be installed with overhead guard 23 above the described vehicle frame 11.Described vehicle frame 11 rear ends are installed with counterweight 17.

Embodiment recited above is described preferred implementation of the present utility model; be not that design of the present utility model and scope are limited; under the prerequisite that does not break away from the utility model design concept; common engineering staff make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.

Overall structure of the present utility model comprises following components:

1. vehicle frame part; Mainly comprise welded frame 11, tailstock 15; Vehicle frame 11 and tailstock 15 adopt quality steel plate and the welding of high strength square tube, and rigidity is big, intensity is high.The front end and the propons of vehicle frame are rigidly connected, and the rear end of vehicle frame is supported on the back axle by back bridge seat and hinge, travels to adapt on the road surface of injustice.Tailstock is used to connect back axle and counterweight, and whole vehicle frame is used for major parts such as support motor, change speed gear box, storage battery, counterweight;

2. door frame part: it is the tackling system of fork truck, it is the on-line operation device that fork truck carries out loading and unloading operation, unloading of goods put, stacking will be finished by it, be the important component part of fork truck, mainly by fixedly door frame 4, movable door frame 1, sliding rack 6, pallet fork 7, lifting cylinder 2 and inclined cylinder 5 are formed the welding of door frame employing high strength fork truck channel-section steel, compact conformation, rigidity is splendid, and sliding rack is used to install pallet fork or other accessories, drives goods along movable door frame lifting;

3. power and steering hardware: mainly comprise fuel tank 12, motor 10, gear type pump 31, multiway valve 39, change speed gear box 9, propons 8, steering cylinder 14, back axle 13 etc.;

4. motor and gear pump assembly: form by motor 10, change-speed box 26, fixed mount 27, driving pulley 28, circular nut 34, adapter sleeve 29, bearing 33, bearing block 30, adapter plate 32, gear type pump 31.Principle of work is: DC machine is slowed down the back by output shaft, semi-round key, driving pulley through change-speed box, is advanced or is retreated by three V-belts, driven pulley driving propons; Through the gear type pump work of adapter sleeve, bearing, bearing block, fixed mount, adapter plate, drive right-hand member, pressure oil enters multiway valve by fuel tank simultaneously;

5. hydraulic control system: as shown in Figure 3, motor 10 exports the hydraulic oil in the fuel tank 12 to multiway valve 39 via driving pulley 28, gear type pump 31, promote lifting arm 37, the lifting loop of pressure oil in multiway valve promotes lifting cylinder (single-acting) 2 and moves up, and finishes down maneuver by deadweight; Promote tilting bar 38, the inclination loop of pressure oil in multiway valve promotes inclined cylinder (double acting) and realizes leaning forward and swinging back of door frame; The kinematic velocity of oil cylinder is by the built-in governor valve control of multiway valve.Steering wheel rotation makes through the hydraulic oil that turns to the loop to enter deflector 35 in the multiway valve 39 and drives steering cylinder 14 drive rear-axle steerings;

6. electric system: the fork truck electric system is made up of storage battery (being battery pack), motor, automatically controlled accelerator assembly and illumination equipment, and has disposed control relay, has improved reliability of products.Highly integrated automatically controlled accelerator assembly structure compactness, superior performance;

7. speed-changing mechanism: as shown in Figure 4, whole speed-changing mechanism is fixed between pin 51 and the operator's station by acorn nut 44 and jam nut 53.By adapter shaft 49, key, locking plate 52 promotes gear by support arm, connecting rod and moves and realize advancing and retreating of fork truck down, the centre is a neutral, forward for advancing one grade, backward for retreating shelves by the operating handle 43 of top for one grade of operation that moves forward and backward; Two, the third gear forward operation promotes gear by connector bushing 48, upper collet 50 by support arm, connecting rod by the operating handle 43 of bottom and moves that the second gear of realizing fork truck advances and third gear is advanced; The interlocking of upper and lower handle is by upper collet 50, pin 51, locking plate 52 and two pieces of lock balls 54 are realized down, promptly only in last (descending) when handle is in neutral gear position, following (on) handle could throw off neutral gear position and enter mode of operation;

8. accumulator box part: mainly comprise accumulator box 18, storage battery 16, electric box 19, seat 21, parking brake 20, hydraulic actuating cylinder (lifting cylinder 2, inclined cylinder 5), lifting joystick 22, bank control bar 24;

9. counterweight 17: the counterweight of fork truck rear end is used for the weight that the balance fork truck forks;

10. overhead guard 23: the overhead guard of fork truck upper end can prevent effectively that weight from falling and injure truck driver by a crashing object.

Concrete operations mode of the present utility model is as follows:

1. open key switch, energized, let slip the clutch and control of Electric potentials switch, motor and gear type pump are started working, and steering wheel rotation by the oil circuit driving steering cylinder and the back axle of multiway valve, is realized fork-truck steering;

2. handle gear change hand lever to suitable gear, release the clutch pedal can drive fork truck change speed gear box and propons and advance or retreat;

3. let slip the clutch in neutral, is handled the gear position lifting joystick control lifting cylinder drive activity door frame, sliding rack and pallet fork and is moved up and down;

4. handle bank control bar control inclined cylinder and drive fixedly that door frame leans forward or swings back.

Claims

1. an electri forklift comprises vehicle frame (11), and vehicle frame (11) front portion is fixedly connected with propons (8), and propons is equipped with front-wheel on (8), and vehicle frame (11) rear portion is fixedly connected with back axle (13), and back axle is equipped with trailing wheel on (13); Vehicle frame (11) front end is hinged with fixedly door frame (4), fixedly slides up and down on the door frame (4) and is connected with movable door frame (1), slides up and down on the movable door frame (1) and is connected with sliding rack (6), and pallet fork (7) is installed on the sliding rack (6); Be installed with motor (10) on the vehicle frame (11), motor (10) is connected with described traction avant; Be fixedly connected with accumulator box (18) on the vehicle frame (11), be provided with storage battery (16) in the accumulator box (18), storage battery (16) links to each other with described motor (10) by circuit, it is characterized in that: be connected with gear type pump (31) on the transmission shaft of motor (10), be installed with fuel tank (12) on the vehicle frame (11), gear type pump (31) communicates with fuel tank (12); Described movable door frame (1) and fixedly be fixedly connected with lifting cylinder (2) between the door frame (4), be communicated with lifting pipeline (41) between lifting cylinder (2) and the fuel tank (12), fixedly be fixedly connected with inclined cylinder (5) between door frame (4) and the vehicle frame (11), be communicated with inclination pipeline (40) between inclined cylinder (5) and the fuel tank (12), be communicated with multiway valve (39) on lifting pipeline (41) and the inclination pipeline (40), multiway valve (39) is provided with lifting arm (37) and tilting bar (38), lifting arm (37) is corresponding with lifting pipeline (41), be connected with lifting joystick (22) on the lifting arm (37), tilting bar (38) is corresponding with inclination pipeline (40), is connected with bank control bar (24) on the tilting bar (38); Described back axle (13) and trailing wheel are fixedly connected with steering cylinder (14) for being hinged and connected between back axle (13) and the trailing wheel, be communicated with between steering cylinder (14) and the fuel tank (12) and turn to pipeline (42), turn to and are communicated with deflector (35) on the pipeline (42).

2. electri forklift according to claim 1, it is characterized in that: be connected with driving pulley (28) on the transmission shaft of described motor (10), be connected with change speed gear box (9) on the described propons (8), change speed gear box (9) one sides are connected with driven pulley (36), and driving pulley (28) is connected by belt-driving with driven pulley (36).

3. electri forklift according to claim 2 is characterized in that: be connected with change-speed box (26) between described motor (10) and the driving pulley (28).

4. electri forklift according to claim 3 is characterized in that: be installed with fixed mount (27) on the described motor (10), described driving pulley (28) and change-speed box (26) are positioned at fixed mount (27).

5. according to claim 1 or 2 or 3 or 4 described electri forklifts, it is characterized in that: be fixedly connected with fixed pulley on the described movable door frame (1), be connected with chain on the fixed pulley, a wherein end and the described sliding rack (6) of chain are fixedly linked.

6. electri forklift according to claim 5 is characterized in that: be installed with overhead guard (23) above the described vehicle frame (11).

7. electri forklift according to claim 6 is characterized in that: described vehicle frame (11) rear end is installed with counterweight (17).