Electric forklift with automatic balancing function

Abstract

The invention belongs to the technical field of electric forklifts, and particularly relates to an electric forklift with an automatic balancing function, which comprises an electric forklift body, and further comprises a counterweight assembly for increasing the weight of the rear side of the electric forklift body; and the adjusting assembly is used for adjusting the distance between the counterweight assembly and the electric forklift body. The adjusting assembly comprises a first supporting plate, the first supporting plate is fixedly installed on the rear side of the electric forklift body through a first connecting assembly, the second supporting plate is arranged on one side of the first supporting plate, and side plates are fixedly installed on the two sides of the opposite ends of the first supporting plate and the second supporting plate correspondingly. And the screw rod is rotationally connected between the two groups of side plates through a bearing. According to the electric forklift, when the electric forklift body is full of goods, the weight of the rear side of the electric forklift body can be larger than that of the front side of the electric forklift body, then automatic balance can be achieved, the phenomenon that the electric forklift body inclines forwards is avoided, and safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric forklifts, in particular to an electric forklift with an automatic balancing function. Background Art

[0002] An electric forklift is a forklift that uses electricity to operate, and most of them work on batteries. The main power source of an electric forklift is a battery, which converts chemical energy into electrical energy to drive the travel motor and the hydraulic system motor, thereby achieving travel and loading and unloading operations. Electric forklifts are usually used in working conditions with high environmental requirements, such as the pharmaceutical and food industries, because they have no exhaust gas pollution and low noise. The carrying capacity of an electric forklift is generally between 1.0 and 4.8 tons, and the width of the operating channel is generally 3.5 to 5.0 meters. 13. Electric forklifts have a wide range of applications, mainly in manufacturing, transportation, warehousing, postal, wholesale and retail industries. According to the World Industrial Truck Statistics Association, electric forklifts can be divided into many types, including electric counterbalanced ride-on forklifts, electric warehouse forklifts, etc.

[0003] However, the current electric forklift may tilt forward during operation, which poses a certain safety hazard. The reason is that when the electric forklift is fully loaded with goods, the weight of the front side of the electric forklift may be greater than the weight of the rear side of the electric forklift. Therefore, an electric forklift with an automatic balancing function is invented. Summary of the invention

[0004] In view of the above problems and / or the problems existing in the existing electric forklift with automatic balancing function, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide an electric forklift with an automatic balancing function, which can solve the above-mentioned existing problems.

[0006] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions: An electric forklift with automatic balancing function, comprising an electric forklift body, and further comprising: A counterweight assembly used to increase the weight of the rear side of the electric forklift body; An adjusting component is used to adjust the distance between the counterweight component and the electric forklift body.

[0007] As a preferred solution of the electric forklift with automatic balancing function described in the present invention, the adjustment component includes: A first support plate, wherein the first support plate is fixedly mounted on the rear side of the electric forklift body through a first connecting assembly; a second support plate, the second support plate being disposed on one side of the first support plate; Side plates, both sides of the opposite ends of the first supporting plate and the second supporting plate are fixedly mounted with side plates; The screw rod is rotatably connected between the two sets of side plates through a bearing, and the thread directions of the two ends of the screw rod are arranged to be opposite starting from the middle.

[0008] As a preferred solution of the electric forklift with automatic balancing function described in the present invention, the adjustment component further includes: A slider, both ends of the screw rod are threadedly connected to the slider; A guide rod, wherein the guide rod is fixedly installed between the two sets of side plates; A servo motor, wherein the servo motor is fixedly mounted on a set of side plates, and an output shaft of the servo motor is fixedly connected to the screw; X-shaped rods are arranged between the four groups of slide blocks.

[0009] As a preferred solution of the electric forklift with automatic balancing function described in the present invention, the X-shaped rod is composed of two groups of movable rods arranged in an X shape, and the middle parts between the two groups of movable rods are rotatably connected together by a pin shaft, and the ends of the movable rods are rotatably connected to the slider.

[0010] As a preferred solution of the electric forklift with automatic balancing function described in the present invention, the counterweight assembly is composed of a plurality of counterweight blocks, two groups of the counterweight blocks are connected together by a second connecting assembly, and the counterweight block close to the second support plate is also connected to the second support plate by the second connecting assembly.

[0011] As a preferred solution of the electric forklift with automatic balancing function described in the present invention, the second connecting component includes: Positioning grooves, a plurality of positioning grooves are provided at both ends of one side of the counterweight block; Positioning blocks, a plurality of positioning blocks are fixedly installed on one side of the second support plate and both ends of the other side of the counterweight block, and the positioning blocks are inserted into the positioning grooves; Box body, a plurality of box bodies are fixedly installed on both sides of the counterweight block; The cylinder is fixedly installed in the box body.

[0012] As a preferred solution of the electric forklift with automatic balancing function described in the present invention, the second connecting component also includes: A square plate, the cylinder is fixedly mounted with the square plate via a piston rod; A positioning rod, the positioning rod is fixedly mounted on one side of the square plate and is slidably connected to the counterweight block; A limiting groove is provided on one side of the positioning block, and one end of the positioning rod is inserted into the limiting groove.

[0013] As a preferred solution of the electric forklift with automatic balancing function described in the present invention, the first connecting component includes: Through holes, a plurality of through holes are provided at both ends of the first support plate; First studs, a plurality of first studs are fixedly installed at both ends of the rear side of the electric forklift body, and the first studs pass through the through holes; a second stud, the second stud being fixedly mounted on one end of the first stud; a first nut, the first nut being threadedly connected to the first stud; A second nut is threadedly connected to the second stud.

[0014] As a preferred solution of the electric forklift with automatic balancing function described in the present invention, the thread directions of the second stud and the first stud are opposite, the diameter of the first stud is larger than the diameter of the second stud, and one end of the first stud is located in the inner cavity of the first nut.

[0015] As a preferred solution of the electric forklift with automatic balancing function described in the present invention, it also includes: A support assembly for improving the stability of the counterweight assembly, and the support assembly is arranged between the second support plate and the electric forklift body; The support assembly comprises: Hollow tubes, a plurality of hollow tubes are fixedly installed on the rear side of the electric forklift body; A solid rod is slidably connected in the hollow tube, and one end of the solid rod is fixedly mounted on the second supporting plate.

[0016] Compared with existing technologies: 1. By providing a counterweight assembly for increasing the weight of the rear side of the electric forklift body, and by providing an adjustment assembly for adjusting the distance between the counterweight assembly and the electric forklift body, it is possible to make the weight of the rear side of the electric forklift body greater than the weight of the front side of the electric forklift body when the electric forklift body is fully loaded with goods, thereby achieving automatic balancing, avoiding the forward tilt of the electric forklift body, and improving safety; 2. By setting the first connecting component to fix the adjusting component on the electric forklift body, the adjusting component can be prevented from loosening due to the vibration of the electric forklift body, thereby improving the installation stability of the adjusting component; 3. The counterweight assembly is installed by setting up a second connecting assembly, which makes it easy for personnel to disassemble and assemble the counterweight assembly, and further makes it easy for personnel to adjust the weight of the counterweight assembly according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of the structure of the present invention; Figure 2 It is a front view schematic diagram of the structure of the adjustment assembly and the counterweight assembly of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at B in the middle; Figure 5 It is a top view schematic diagram of the adjustment assembly of the present invention; Figure 6 It is a schematic diagram of the X-shaped rod structure of the present invention.

[0018] In the figure: a first support plate 10, a second support plate 11, a side plate 12, a screw 13, a slider 14, a guide rod 15, a servo motor 16, an X-shaped rod 17, a counterweight 20, a positioning groove 30, a positioning block 31, a box body 32, a cylinder 33, a square plate 34, a positioning rod 35, a limiting groove 36, a through hole 40, a first stud 41, a second stud 42, a first nut 43, a second nut 44, a hollow tube 50, a solid rod 51, and an electric forklift body 60. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] The present invention provides an electric forklift with automatic balancing function, see Figure 1-Figure 6 , including an electric forklift body 60; Also included is: an adjustment assembly for adjusting the distance between the counterweight assembly and the electric forklift body 60; The adjustment assembly includes: a first support plate 10, a second support plate 11, a side plate 12, a screw rod 13, a slider 14, a guide rod 15, a servo motor 16, and an X-shaped rod 17; The first support plate 10 is fixedly mounted on the rear side of the electric forklift body 60 through a first connecting assembly, the second support plate 11 is arranged on one side of the first support plate 10, and side plates 12 are fixedly mounted on both sides of the opposite ends of the first support plate 10 and the second support plate 11, the screw 13 is rotatably connected between the two groups of side plates 12 through a bearing, and the thread directions of the two ends of the screw 13 are set to be opposite starting from the middle, both ends of the screw 13 are threadedly connected to the slider 14, the guide rod 15 is fixedly mounted between the two groups of side plates 12, the servo motor 16 is fixedly mounted on one group of side plates 12, and the output shaft of the servo motor 16 is fixedly connected to the screw 13, and an X-shaped rod 17 is arranged between the four groups of sliders 14, the X-shaped rod 17 is composed of two groups of movable rods arranged in an X shape, and the middle part between the two groups of movable rods is rotatably connected together by a pin shaft, and the end of the movable rod is rotatably connected to the slider 14.

[0021] The first connecting assembly includes: a through hole 40, a first stud 41, a second stud 42, a first nut 43, and a second nut 44; A plurality of through holes 40 are formed at both ends of the first support plate 10, a plurality of first studs 41 are fixedly installed at both ends of the rear side of the electric forklift body 60, and the first studs 41 pass through the through holes 40, and the second studs 42 are fixedly installed on one end of the first studs 41, the first nut 43 is threadedly connected to the first stud 41, and the second nut 44 is threadedly connected to the second stud 42, the thread directions of the second stud 42 and the first stud 41 are opposite, the diameter of the first stud 41 is larger than the diameter of the second stud 42, and one end of the first stud 41 is located in the inner cavity of the first nut 43.

[0022] Also included is: a counterweight assembly for increasing the weight of the rear side of the electric forklift body 60; The counterweight assembly is composed of a plurality of counterweight blocks 20 , two groups of the counterweight blocks 20 are connected together via a second connecting assembly, and the counterweight block 20 close to the second support plate 11 is also connected to the second support plate 11 via the second connecting assembly.

[0023] The second connecting assembly includes: a positioning groove 30, a positioning block 31, a box body 32, a cylinder 33, a square plate 34, a positioning rod 35, and a limiting groove 36; A plurality of positioning grooves 30 are provided at both ends of one side of the counterweight block 20, a plurality of positioning blocks 31 are fixedly installed on one side of the second support plate 11 and both ends of the other side of the counterweight block 20, and the positioning blocks 31 are inserted in the positioning grooves 30, a plurality of box bodies 32 are fixedly installed on both sides of the counterweight block 20, the cylinder 33 is fixedly installed in the box body 32, the cylinder 33 is fixedly installed on a square plate 34 through a piston rod, the positioning rod 35 is fixedly installed on one side of the square plate 34, and the positioning rod 35 is slidably connected to the counterweight block 20, a limiting groove 36 is provided on one side of the positioning block 31, and one end of the positioning rod 35 is inserted in the limiting groove 36.

[0024] It also includes: a support assembly for improving the stability of the counterweight assembly, and the support assembly is arranged between the second support plate 11 and the electric forklift body 60; The support assembly includes: a hollow tube 50 and a solid rod 51; A plurality of hollow tubes 50 are fixedly mounted on the rear side of the electric forklift body 60 , the solid rod 51 is slidably connected in the hollow tube 50 , and one end of the solid rod 51 is fixedly mounted on the second support plate 11 .

[0025] When used, the specific steps are as follows: Step 1: Pass the first stud 41 through the through hole 40, then thread the first nut 43 onto the first stud 41, and then thread the second nut 44 onto the second stud 42, so that the adjustment assembly can be fixed on the rear side of the electric forklift body 60, and at the same time, the hollow tube 50 is fixed on the rear side of the electric forklift body 60; Step 2: Insert the positioning block 31 into the positioning groove 30, and the positioning rod 35 and the limiting groove 36 will be aligned. Then, the square plate 34 is moved toward the counterweight block 20 by the cylinder 33 until one end of the positioning rod 35 is inserted into the limiting groove 36. At this point, several counterweight blocks 20 can be connected together and fixed on the second support plate 11; Step three: When the electric forklift body 60 is full of goods, the screw 13 will be rotated by the servo motor 16. When the screw 13 rotates, the two sets of sliders 14 will move toward each other. When the two sets of sliders 14 move toward each other, the angle of the X-shaped rod 17 will change. When the angle of the X-shaped rod 17 changes, the distance between the first support plate 10 and the second support plate 11 will gradually increase, so that the counterweight block 20 is farther and farther away from the electric forklift body 60. At this point, the weight of the rear side of the electric forklift body 60 can be increased, so that the weight of the rear side of the electric forklift body 60 is greater than the weight of the front side of the electric forklift body 60, thereby achieving automatic balancing and preventing the electric forklift body 60 from tilting forward.

[0026] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electric forklift with automatic balancing function, comprising an electric forklift body (60), characterized in that: Also includes: A counterweight assembly for increasing the weight of the rear side of the electric forklift body (60); An adjustment component for adjusting the distance between a counterweight component and an electric forklift body (60).

2. The electric forklift with automatic balancing function according to claim 1, characterized in that: The adjustment component comprises: A first support plate (10), the first support plate (10) being fixedly mounted on the rear side of the electric forklift body (60) via a first connecting assembly; A second support plate (11), the second support plate (11) being arranged on one side of the first support plate (10); Side plates (12), the side plates (12) being fixedly mounted on both sides of the opposite ends of the first support plate (10) and the second support plate (11); A screw rod (13) is rotatably connected between the two sets of side plates (12) via a bearing, and the thread directions of the two ends of the screw rod (13) are arranged to be opposite starting from the middle.

3. The electric forklift with automatic balancing function according to claim 2, characterized in that: The adjustment component also includes: A slider (14), both ends of the screw rod (13) being threadedly connected to the slider (14); A guide rod (15), wherein the guide rod (15) is fixedly mounted between the two sets of side plates (12); A servo motor (16), wherein the servo motor (16) is fixedly mounted on a set of side plates (12), and an output shaft of the servo motor (16) is fixedly connected to the screw rod (13); An X-shaped rod (17) is provided between the four groups of sliders (14).

4. The electric forklift with automatic balancing function according to claim 3, characterized in that: The X-shaped rod (17) is composed of two groups of movable rods arranged in an X shape, and the middle parts between the two groups of movable rods are rotatably connected together through a pin shaft, and the ends of the movable rods are rotatably connected to the slider (14).

5. The electric forklift with automatic balancing function according to claim 2, characterized in that: The counterweight assembly is composed of a plurality of counterweight blocks (20), two groups of the counterweight blocks (20) are connected together via a second connecting assembly, and the counterweight block (20) close to the second support plate (11) is also connected to the second support plate (11) via the second connecting assembly.

6. The electric forklift with automatic balancing function according to claim 5, characterized in that: The second connection component comprises: Positioning grooves (30), wherein a plurality of positioning grooves (30) are provided at both ends of one side of the counterweight block (20); Positioning blocks (31), a plurality of positioning blocks (31) are fixedly mounted on one side of the second support plate (11) and on both ends of the other side of the counterweight block (20), and the positioning blocks (31) are inserted into the positioning grooves (30); A box body (32), with a plurality of box bodies (32) fixedly mounted on both sides of the counterweight block (20); A cylinder (33), wherein the cylinder (33) is fixedly installed in the box body (32).

7. The electric forklift with automatic balancing function according to claim 6, characterized in that: The second connection component also includes: A square plate (34), the cylinder (33) being fixedly mounted with the square plate (34) via a piston rod; A positioning rod (35), wherein the positioning rod (35) is fixedly mounted on one side of the square plate (34), and the positioning rod (35) is slidably connected to the counterweight (20); A limiting groove (36), wherein one side of the positioning block (31) is provided with a limiting groove (36), and one end of the positioning rod (35) is inserted into the limiting groove (36).

8. The electric forklift with automatic balancing function according to claim 2, characterized in that: The first connection component comprises: Through holes (40), a plurality of through holes (40) are provided at both ends of the first support plate (10); First studs (41), a plurality of first studs (41) are fixedly mounted on both ends of the rear side of the electric forklift body (60), and the first studs (41) pass through the through holes (40); A second stud (42), the second stud (42) being fixedly mounted on one end of the first stud (41); A first nut (43), the first nut (43) being threadedly connected to the first stud (41); A second nut (44) is threadedly connected to the second stud (42).

9. The electric forklift with automatic balancing function according to claim 8, characterized in that: The thread directions of the second stud (42) and the first stud (41) are opposite, the diameter of the first stud (41) is larger than the diameter of the second stud (42), and one end of the first stud (41) is located in the inner cavity of the first nut (43).

10. The electric forklift with automatic balancing function according to claim 2, characterized in that: Also includes: A support assembly for improving the stability of the counterweight assembly, wherein the support assembly is arranged between the second support plate (11) and the electric forklift body (60); The support assembly comprises: Hollow tubes (50), a plurality of hollow tubes (50) being fixedly mounted on the rear side of the electric forklift body (60); A solid rod (51), wherein the solid rod (51) is slidably connected in the hollow tube (50), and one end of the solid rod (51) is fixedly mounted on the second support plate (11).

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