CN111517246A - Portable hand electric fork-lift - Google Patents

Abstract

The application discloses portable hand electric fork-lift. Comprises a first frame and a second frame arranged on the first frame; the scheme discloses a specific structure of a portable hand electric forklift, wherein a first frame is used as a bearing mechanism, a second frame moving relative to the first frame is additionally arranged, goods are placed on a front fork of the second frame, and when a driving assembly is started, one end, close to the first frame, of a lifting arm rotates around a first connecting rod, and one end, far away from the first connecting rod, of the lifting arm lifts the second frame, so that the goods to be transported on the second frame are lifted; in order to ensure the stability of the second frame in the lifting process, a balance pull rod is arranged between the first frame and the second frame and is respectively and rotatably connected with the front fork vertical beam and the second connecting rod, when the driving assembly is started, one end, close to the first frame, of the cargo boom rotates around the first connecting rod, and the balance pull rod rotates around the second connecting rod, so that the balance pull rod cannot hinder the lifting process of the cargo boom.

Description

A portable hand-held electric forklift

technical field

The present disclosure generally relates to the technical field of forklift equipment, and in particular relates to a portable hand-held electric forklift.

Background technique

Forklifts are industrial handling vehicles, which refer to various wheeled handling vehicles for loading, unloading, stacking and short-distance transportation of palletized goods; industrial handling vehicles are widely used in ports, stations, airports, freight yards, factory workshops, warehouses, Circulation centers and distribution centers, etc., carry out loading, unloading, and handling operations of palletized goods in cabins, carriages and containers, and are essential equipment in pallet transportation and container transportation;

At present, for goods with large lifting weight, as well as large ports, airports and factory workshops, in most cases, truck-mounted forklifts and small push forklifts are required to be used together. It is more efficient to carry and lift goods by human-driven vehicles, but the cost of truck-mounted forklifts is high, and it is suitable for long-distance transportation, and truck-mounted forklifts are suitable for larger areas; In other words, the cost of using a truck-mounted forklift is high, and when the site is small, it is inconvenient to move, and it may even cause certain safety accidents. At this time, a small push forklift can better meet the actual handling needs;

At present, most of the small push forklifts on the market are manual hydraulic forklifts, and most of them play the role of transferring goods. The disadvantage of manual hydraulic forklifts is that for the goods that need to be loaded and unloaded, their lifting height is limited, and most still require manpower. The loading and unloading process, and for the manual hydraulic forklift, its own weight is heavy and cannot be carried with the vehicle. Therefore, we propose a portable hand-held electric forklift to solve the handling difficulties of the existing forklift. , low efficiency and high labor costs.

SUMMARY OF THE INVENTION

In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a portable hand-held electric forklift that can be carried with the vehicle, conveniently and quickly loads and unloads goods, saves manpower, and has a simple and easy-to-implement structure.

In a first aspect, the present application provides a portable walk-behind electric forklift, comprising: a first frame and a second frame disposed on the first frame;

The first frame includes: a frame and two inclined beams arranged in parallel; the frame is in a U-shaped structure, and the frame is provided with two front fork legs arranged in parallel; each of the front fork legs The end of the frame is provided with a first caster; the side of the frame away from the front fork leg is provided with two parallel beams; the end of the beam is provided with a second caster; A first connecting rod and a second connecting rod arranged in parallel are arranged between them, and the second connecting rod is located at the ends of the two inclined beams;

The second frame includes: a boom and a front fork vertical beam; the boom is arranged on the first connecting rod, and a drive assembly is connected to the boom; the front fork vertical beam is fixed connected to the end of the boom; the front fork vertical beam is provided with a front fork; a balance pull rod is arranged between the front fork vertical beam and the second connecting rod; the balance pull rod is respectively connected to the The front fork vertical beam and the second connecting rod are rotatably connected; the boom is also provided with a long hole; the edge of the long hole is provided with two symmetrically arranged tension scales; A connecting shaft is arranged between the said pull scales.

According to the technical solutions provided by the embodiments of the present application, the drive assembly includes: an oil cylinder and a battery; the oil cylinder is arranged on the frame, and the oil cylinder is located between the two second support rods; the oil cylinder The piston rod is fixed with a telescopic rod, and the end of the telescopic rod is fixed on the connecting shaft through the long hole; the battery can be arranged on the side wall of any of the inclined beams, the The surface of the frame or the side wall of the frame close to the beam; the outer wall of each inclined beam is provided with a handrail, the handrail is close to the end of the inclined beam, and the two handrails are symmetrical The end of any one of the inclined beams is also provided with a control switch, and the control switch is arranged adjacent to the handrail; the battery is respectively connected to the oil cylinder and the control switch through wires.

According to the technical solutions provided in the embodiments of the present application, the angle formed by the inclined beam and the front fork leg is greater than or equal to 90 degrees.

According to the technical solutions provided in the embodiments of the present application, the second caster is a universal caster.

According to the technical solutions provided in the embodiments of the present application, a support rod is provided between the inclined beam and the transverse beam.

According to the technical solutions provided by the embodiments of the present application, both ends of the support rod are respectively detachably connected to the inclined beam and the cross beam.

According to the technical solutions provided by the embodiments of the present application, a limit switch is arranged on the boom, and the limit switch is arranged close to the first connecting rod.

To sum up, the technical solution specifically discloses a specific structure of a portable hand-held electric forklift. The present application specifically uses the first frame as the carrying mechanism of the hand-held electric forklift, and adds a second frame that can move relative to the first frame on the first frame, so that the goods to be transported are placed on the first frame. On the front fork of the second frame, when the drive assembly is activated, the end of the boom close to the first frame rotates around the first connecting rod, and the end of the boom relatively far from the first connecting rod lifts the second frame, so as to lift the second frame. The cargo to be transported on the second frame is lifted. In this technical solution, in order to ensure the balance stability during the lifting process of the second frame, a balance pull rod is provided between the first frame and the second frame, and the balance pull rod is respectively connected with the front fork vertical beam, The second connecting rod is rotatably connected; when the drive assembly is activated, the end of the boom close to the first frame rotates around the first connecting rod, and at the same time, the balance rod rotates around the second connecting rod, so the balance rod does not rotate. It will hinder the lifting operation process of the boom.

In this scheme, a long hole is further opened on the boom, two symmetrical pull scales are arranged on the edge of the long hole, and the end of the telescopic rod penetrates the long hole and is fixed to the connecting shaft between the two pull scales On the upper side, the start of the oil cylinder can drive the boom to rise and fall, and the pull scale can share part of the gravity carried by the boom, avoiding the problem of the boom being subjected to excessive gravity and breaking.

In this scheme, in order to further enhance the support effect of the inclined beam, a support rod is arranged between the inclined beam and the cross beam. When the weight of the goods to be transported is heavy, the support rod can support the inclined beam, share the weight for the inclined beam, and prevent the front fork from rising When carrying goods, the inclined beam is crushed due to excessive force, which damages the forklift.

In this scheme, in order to further control the height of the boom, a limit switch close to the first connecting rod is arranged on the boom, so that the boom can stop when it moves to the set position. protective effect.

Description of drawings

Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG. 1 is a schematic structural diagram of a portable hand-held electric forklift.

FIG. 2 is a schematic structural diagram of a portable hand-held electric forklift in a raised state.

FIG. 3 is a schematic structural diagram of a portable hand-held electric forklift.

Labels in the figure: 1, frame; 2, inclined beam; 3, beam; 4, first connecting rod; 5, second connecting rod; 6, boom; 7, front fork vertical beam; 8, front fork; 9. Balance rod; 10. Oil cylinder; 11. Telescopic rod; 12. Pull scale; 13. Connecting shaft; 14. Long hole; 15. First caster; 16. Second caster; 17. Battery; 18. Control switch ; 19, support rod; 20, limit switch; 21, armrest.

Detailed ways

The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related invention, but not to limit the invention. In addition, it should be noted that, for the convenience of description, only the parts related to the invention are shown in the drawings.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Example 1

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , which are schematic structural diagrams of a first embodiment of a portable hand-held electric forklift provided by the present application, including: a first frame and a on the second frame;

The first frame includes: a frame 1 and two inclined beams 2 arranged in parallel; the frame 1 is in a U-shaped structure, and the frame 1 is provided with two front fork legs arranged in parallel; The end of the front fork leg is provided with a first caster 15; the side of the frame 1 away from the front fork leg is provided with two parallel beams 3; the end of the beam 3 is provided with a second caster 16; A first connecting rod 4 and a second connecting rod 5 are arranged in parallel between the two inclined beams 2, and the second connecting rod 5 is located at the ends of the two inclined beams 2;

The second frame includes: a boom 6 and a front fork vertical beam 7; the boom 6 is arranged on the first connecting rod 4, and a drive assembly is connected to the boom 6; The front fork vertical beam 7 is fixedly connected to the end of the boom 6 ; the front fork vertical beam 7 is provided with a front fork 8 ; There is a balance pull rod 9; the balance pull rod 9 is rotatably connected with the front fork vertical beam 7 and the second connecting rod 5 respectively; the boom 6 is also provided with a long hole 14; the long The edge of the hole 14 is provided with two symmetrically arranged pull scales 12 ; a connecting shaft 13 is disposed between the two pull scales 12 .

In this embodiment, the frame 1 has a U-shaped structure, which serves as the bearing base of the forklift, and is used to install a second frame that can move relative to the first frame;

Two inclined beams 2 are arranged in parallel on the surface of the frame 1 to support the goods. In addition, the angle formed by the inclined beams 2 and the front fork legs of the frame 1 is greater than or equal to 90 degrees , which can disperse the force borne by the boom 6 and prevent the boom 6 from being crushed;

The first caster 15 is arranged at the end of the front fork leg to facilitate the movement of the forklift; two beams 3 are arranged in parallel on the side of the frame 1 away from the front fork leg, and are used to install the second The casters 16 also have the effect of supporting and facilitating movement;

The second caster 16 is arranged at the end of the beam 3. The first caster 15 and the second caster 16 are used together to facilitate the movement of the forklift. The effect of easy turning when moving;

The first connecting rod 4 and the second connecting rod 5 are arranged between the two inclined beams 2, and the two are arranged in parallel, and the second connecting rod 5 is located at the ends of the two inclined beams 2. A connecting rod 4 is used to install the boom 6, and the second connecting rod 5 is used to install the balance rod 9;

The boom 6 is arranged on the first connecting rod 4 and is used for lifting and lowering the goods to be transported. Here, the boom 6 adopts a straight arm or a curved arm to realize the lifting process of the goods to be transported;

The front fork vertical beam 7 is arranged at the end of the boom 6 and is used to install the front fork 8; the front fork 8 is arranged on the front fork vertical beam 7 and is used to carry the goods to be transported;

The balance pull rod 9 is arranged between the front fork vertical beam 7 and the second connecting rod 5 , and is rotatably connected with the front fork vertical beam 7 and the second connecting rod 5 respectively, and is used to maintain the front fork vertical beam 7 The balance stability can also be shared for the boom 6. When the drive assembly is activated, the end of the boom 6 close to the first frame rotates around the first connecting rod 4, and at the same time, the balance rod 9 revolves around the first The two connecting rods 5 rotate, so the balance rod 9 will not hinder the lifting operation process of the boom 6. In addition, the connection method of the balance rod 9 can also be to install a connecting frame on the ends of the two inclined beams 2 to balance the balance rod 9. The two ends of the pull rod 9 are respectively connected with the connecting frame and the front fork vertical beam 7 in a rotatable connection, and the connecting frame can also be used as an armrest and a control switch for installation;

The elongated hole 14 is provided on the boom 6 for the telescopic rod 11 to pass through. Here, the cross-sectional shape of the elongated hole 14 can also be selected in a circular or square shape;

Two pull scales 12 are symmetrically arranged on the edge of the elongated hole 14, and a connecting shaft 13 is arranged between the two for fixing the telescopic rod 11, so as to realize the function of the oil cylinder 10 to control the lifting and lowering of the boom 6, and at the same time pull the scale 12 also has the function of sharing the gravity of the boom 6 to avoid the problem of breaking the boom 6 due to excessive gravity. Here, the shape of the pull scale 12 is not limited. Alien shapes, etc.

In any preferred embodiment, the drive assembly includes: an oil cylinder 10 and a battery 17 ; the oil cylinder 10 is arranged on the frame 1 , and the oil cylinder 10 is located between the two second support rods 3 ; The piston rod of the oil cylinder 10 is fixedly connected with a telescopic rod 11, and the end of the telescopic rod 11 is fixed on the connecting shaft 13 through the elongated hole 14; the battery 17 can be installed in any On the side wall of the inclined beam 2, the surface of the frame 1 or the side wall of the frame 1 close to the cross beam 3; the outer wall of each inclined beam 2 is provided with a handrail 21, the handrail 21 is close to the end of the inclined beam 2, and the two handrails 21 are symmetrically arranged; the end of any one of the inclined beams 2 is also provided with a control switch 18, and the control switch 18 is in phase with the handrail 21. The battery 17 is connected to the oil cylinder 10 and the control switch 18 through wires, respectively.

In this embodiment, the oil cylinder 10 is arranged on the frame 1, the oil cylinder 10 is located between the two second support rods 3, and the piston rod is fixed with a telescopic rod 11, which is a boom The lifting of 6 provides driving force. The type of oil cylinder 10 is, for example, TKC MOB40*200-TC. When the oil cylinder 10 is activated, the end of the boom 6 close to the first frame rotates around the first connecting rod 4 and the boom 6 The end relatively far away from the first connecting rod 4 lifts the second frame to lift the goods to be transported on the second frame; the battery 17 is arranged on the side wall of any one of the inclined beams 2, and the frame The surface of 1 or the side wall of the frame 1 close to the beam 3 is used to provide electric power for the oil cylinder 10, the type of the battery is, for example, a 48V 12ah battery; On the outer wall, it is close to the end of the inclined beam 2, and the two handrails 21 are symmetrically arranged, which is convenient for the operator to push the forklift. , the function of operating the forklift; the control switch 18 is arranged at the end of any of the inclined beams 2, and it is arranged adjacent to the handrail 21, and the operator can operate the control switch 18 while holding the handrail. Or off, the battery 17 is connected to the oil cylinder 10 and the control switch 18 through wires, and the opening and closing of the oil cylinder is controlled by the control switch 18 to control the working state of the forklift.

In any preferred embodiment, a support rod 19 is provided between the inclined beam 2 and the transverse beam 3 .

In this embodiment, the support rods 19 are arranged between the inclined beams 2 and the cross beams 3 to enhance the supporting effect of the inclined beams 2 and prevent the inclined beams 2 from being crushed by heavy goods and damage the device.

In any preferred embodiment, both ends of the support rod 19 are respectively detachably connected to the inclined beam 2 and the cross beam 3 .

In this embodiment, the two ends of the support rod 19 are respectively connected to the inclined beam 2 and the cross beam 3, which are not limited here. Optionally, the connection method is bolted. They are respectively connected with the inclined beam 2 and the cross beam 3, so as to facilitate the replacement of the support rod 19. According to the different weight of the loaded goods, select and install the appropriate support rod 19 to ensure the supporting effect.

In any preferred embodiment, a limit switch 20 is arranged on the boom 6 , and the limit switch 20 is arranged close to the first connecting rod 4 .

In this embodiment, the limit switch 20 is disposed on the boom 6 and is disposed close to the first connecting rod 4 to limit the lifting height of the boom 6 so that the boom 6 Moving to the set position can stop the movement, so as to realize the function of protecting the boom 6. Here, the model of the limit switch 20 is, for example, a STEIMEX LSA-012 limit switch.

The specific working process is as follows:

First, install the fully charged battery 17 on the inclined beam 2, move the entire forklift to the designated position of the goods to be transported, and then the operator activates the control switch 18, so that the battery 17 supplies power to the oil cylinder 10, and drives the output end of the oil cylinder 10 to lift. The boom 6, the boom 6 drives the front fork vertical beam 7 to move upward, and the front fork vertical beam 7 is subjected to the force of the two ends of the balance rod 9 during the rising process to ensure that the front fork vertical beam 7 remains balanced during the rising process. There is a rigid connection between the front fork vertical beam 7 and the front fork 8, and the rising process of the front fork vertical beam 7 is the rising process of the front fork 8, and then fork and carry the goods. The forklift can be pushed to the designated position, and the control switch 18 can be activated to lower the boom 6, thereby realizing the lowering of the front fork force beam 7 and the front fork 8, unloading the goods at the designated position, and completing the entire loading and unloading process.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover the above-mentioned technical features without departing from the inventive concept. Other technical solutions formed by any combination of its equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in this application (but not limited to) with similar functions.

Claims (7)

1. A portable walk-behind electric forklift, comprising: a first frame and a second frame arranged on the first frame; The first vehicle frame includes: a vehicle frame (1) and two inclined beams (2) arranged in parallel; the vehicle frame (1) has a U-shaped structure, and the vehicle frame (1) is provided with two parallelly arranged slant beams (2). the front fork legs; the end of each front fork leg is provided with a first caster (15); the side of the frame (1) away from the front fork leg is provided with two parallel beams (3) ); the end of the beam (3) is provided with a second caster (16); the first connecting rod (4) and the second connecting rod (5) arranged in parallel are provided between the two inclined beams (2). ), and the second connecting rod (5) is located at the ends of the two inclined beams (2); The second frame includes: a boom (6) and a front fork vertical beam (7); the boom (6) is arranged on the first connecting rod (4), and the boom (6) is (6) A drive assembly is connected; the front fork vertical beam (7) is fixed on the end of the boom (6); the front fork vertical beam (7) is provided with a front fork (8); A balance tie rod (9) is arranged between the front fork vertical beam (7) and the second connecting rod (5); the balance tie rod (9) is respectively connected with the front fork vertical beam (7), the The second connecting rod (5) is rotatably connected; the boom (6) is also provided with an elongated hole (14); the edge of the elongated hole (14) is provided with two symmetrically arranged tension scales ( 12); a connecting shaft (13) is arranged between the two said pull scales (12). 2. A portable electric forklift truck according to claim 1, characterized in that the drive assembly comprises: an oil cylinder (10) and a battery (17); the oil cylinder (10) is arranged on the frame of the vehicle (1), and the oil cylinder (10) is located between the two second support rods (3); the piston rod of the oil cylinder (10) is fixed with a telescopic rod (11), and the telescopic rod The end of (11) penetrates the elongated hole (14) and is fixed on the connecting shaft (13); the battery (17) can be arranged on the side wall of any one of the inclined beams (2), all The surface of the frame (1) or the side wall of the frame (1) close to the beam (3); handrails (21) are provided on the outer walls of each of the inclined beams (2), and the handrails (21) Close to the end of the inclined beam (2), and the two handrails (21) are symmetrically arranged; the end of any one of the inclined beams (2) is also provided with a control switch (18), and all the handrails (21) are arranged symmetrically; The control switch (18) is arranged adjacent to the handrail (21); the battery (17) is connected to the oil cylinder (10) and the control switch (18) respectively through wires. 3 . The portable electric forklift truck according to claim 1 , wherein the angle formed by the inclined beam ( 2 ) and the front fork leg is greater than or equal to 90 degrees. 4 . 4. A portable electric hand-held electric forklift truck according to claim 1, characterized in that, the second caster (16) is a universal wheel. 5 . The portable electric forklift truck according to claim 1 , wherein a support rod ( 19 ) is arranged between the inclined beam ( 2 ) and the transverse beam ( 3 ). 6 . 6. A portable electric forklift truck according to claim 6, characterized in that the two ends of the support rod (19) are detachably connected to the inclined beam (2), the cross beam (3) respectively. )connect. 7. A portable electric forklift truck according to claim 1, characterized in that a limit switch (20) is provided on the boom (6), and the limit switch (20) is close to the The first connecting rod (4) is set.

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