Anti-rollover structure of electric forklift

Abstract

The utility model is applicable to the field of electric forklifts, and provides an anti-rollover structure of an electric forklift, which comprises a fork arm carrier, a lifting mechanism and a lifting plate, the fork arm carrier is movably arranged on one side of a gantry, and a fork is movably arranged on one side of the fork arm carrier; through cooperation of a lead screw and a threaded hole, ascending and descending of a lifting plate can be controlled by controlling the rotating direction of the lead screw, goods on a pallet fork can be longitudinally pressed through an arranged clamping unit, the goods can be transversely clamped through cooperation of a hydraulic cylinder and a clamping jaw, the goods can be fixed in the longitudinal direction and the transverse direction, and therefore the goods can be conveniently and rapidly clamped. And rollover and inclination of goods in the operation process can be prevented.

Description

Technical Field

[0001] The utility model belongs to the field of electric forklifts, and particularly relates to an anti-overturning structure for electric forklifts. Background Technique

[0002] Electric forklifts are powered by an electric drive system rather than an internal combustion engine and are usually powered by batteries. Widely used in the fields of industry, warehousing, and logistics, electric forklifts have the main advantages of environmental protection, low noise, low maintenance costs, flexible operation, and high energy efficiency.

[0003] Although forklifts are mainly used for handling large goods, most current forklifts lack the function of fixing goods. Therefore, during operation, the goods are prone to tipping over due to instability, which may cause safety accidents. Usually, manual intervention is required to fix the goods and the forks, which is inefficient and time-consuming. Summary of the Utility Model

[0004] The purpose of the embodiment of the utility model is to provide an anti-overturning structure for an electric forklift, aiming to solve the problems proposed in the background technique.

[0005] The embodiment of the utility model is realized as follows. An anti-overturning structure for an electric forklift includes a fork frame, the fork frame is movably arranged on one side of the mast, a fork is movably arranged on one side of the fork frame, and further includes:

[0006] A lifting mechanism, the lifting mechanism is fixedly arranged above the fork frame, the lifting mechanism includes a mounting plate for support, both ends of the mounting plate are fixedly connected to the inner side of the fork frame, a lead screw is arranged above the middle of the mounting plate, the top end of the fork frame is fixedly provided with a motor, the upper end of the lead screw penetrates through the upper end of the fork frame and extends to the outside to be fixedly connected to the main shaft of the motor, two groups of optical rods parallel to the axis of the lead screw are arranged on both sides of the lead screw, the upper ends of the optical rods are fixedly connected to the inner upper side of the fork frame, and the lower ends of the optical rods are fixedly connected to the upper end of the mounting plate;

[0007] A clamping unit, the clamping unit includes a lifting plate movably arranged outside the lead screw and the optical rods, one side of the lifting plate is fixedly connected to a mounting frame, a fixed rod is fixedly arranged in the middle of the mounting frame, multiple groups of hydraulic cylinders are horizontally fixedly arranged on both sides of the fixed rod, one end of the hydraulic cylinder extends into the mounting frame, sliding rails are arranged above multiple groups of the hydraulic cylinders, one end of the sliding rail is fixedly connected to the inner side of the mounting frame, the other end of the sliding rail is fixedly connected to one side of the fixed rod, sliders are movably arranged on the outside of the sliding rails, a claw integrally formed with the slider is arranged at one end of the slider, and the piston rod of the hydraulic cylinder penetrates through the mounting frame and is fixedly connected to the side of the claw.

[0008] As a further solution of the present utility model: a first shaft hole is fixedly arranged in the middle of the upper end inside the fork frame corresponding to the upper end of the lead screw, a second shaft hole is fixedly arranged in the middle of the upper end of the mounting plate corresponding to the lower end of the lead screw, and bearings are arranged in both the first shaft hole and the second shaft hole.

[0009] As a further solution of the present utility model: the fork frame is arranged in a square frame structure, multiple groups of spiral grooves are arranged on the outer side of the lead screw, and the smooth rod is arranged as a steel round bar.

[0010] As a further solution of the present utility model: the lifting plate is arranged in a "U" shape, a threaded hole adapted to the spiral groove on the outer side of the lead screw is fixedly arranged at the position of the lifting plate corresponding to the lead screw, a movable hole adapted to the diameter of the smooth rod is fixedly arranged at the position of the lifting plate corresponding to the smooth rod, the mounting frame is arranged in a "U" shape, and rib plates for strengthening the stiffness are arranged above the connection ends of the mounting frame and the fixed rod with the lifting plate.

[0011] As a further solution of the present utility model: mounting holes adapted to one end of the hydraulic cylinder are arranged at both ends of the mounting frame corresponding to the position of the hydraulic cylinder.

[0012] An anti - rollover structure of an electric forklift provided by an embodiment of the present utility model, through the cooperation of the arranged lead screw and the threaded hole, can control the rising and falling of the lifting plate by controlling the rotation direction of the lead screw, can longitudinally press the goods on the fork through the arranged clamping unit, and cooperate with the arranged hydraulic cylinder and the claw to transversely clamp the goods. Through the fixation in two directions, longitudinal and transverse, the rollover and inclination of the goods during operation can be prevented. Brief Description of the Drawings

[0013] Figure 1 is an installation schematic diagram of an anti - rollover structure of an electric forklift provided by an embodiment of the present utility model;

[0014] Figure 2 is a three - dimensional structure diagram of an anti - rollover structure of an electric forklift provided by an embodiment of the present utility model;

[0015] Figure 3 is a partial sectional view of an anti - rollover structure of an electric forklift provided by an embodiment of the present utility model.

[0016] In the drawings: fork frame 1, gantry 2, fork 3, lifting mechanism 4, mounting plate 5, lead screw 6, first shaft hole 61, second shaft hole 62, motor 7, smooth rod 8, bearing 9, clamping unit 10, lifting plate 11, threaded hole 111, movable hole 112, mounting frame 12, mounting hole 121, fixed rod 13, hydraulic cylinder 14, slide rail 15, slider 16, claw 161, rib plate 17. Detailed Description of the Embodiment

[0017] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] The following describes the specific implementation of the present utility model in detail in conjunction with specific embodiments.

[0019] As Figures 1 to 3 shown, a rollover prevention structure for an electric forklift provided by an embodiment of the present utility model includes a fork frame 1, the fork frame 1 is movably arranged on one side of the mast 2, a fork 3 is movably arranged on one side of the fork frame 1, and further includes:

[0020] A lifting mechanism 4, the lifting mechanism 4 is fixedly arranged above the fork frame 1, the lifting mechanism 4 includes a mounting plate 5 for support, both ends of the mounting plate 5 are fixedly connected to the inner side of the fork frame 1, a lead screw 6 is arranged above the middle of the mounting plate 5, the top end of the fork frame 1 is fixedly provided with a motor 7, the upper end of the lead screw 6 penetrates through the upper end of the fork frame 1 and extends to the outside and is fixedly connected to the main shaft of the motor 7, two groups of optical rods 8 parallel to the axis of the lead screw 6 are arranged on both sides of the lead screw 6, the upper end of the optical rod 8 is fixedly connected to the inner upper end of the fork frame 1, and the lower end of the optical rod 8 is fixedly connected to the upper end of the mounting plate 5;

[0021] A clamping unit 10, the clamping unit 10 includes a lifting plate 11 movably arranged outside the lead screw 6 and the optical rod 8, one side of the lifting plate 11 is fixedly connected with a mounting frame 12, a fixed rod 13 is fixedly arranged in the middle of the mounting frame 12, a plurality of hydraulic cylinders 14 are fixedly arranged horizontally on both sides of the fixed rod 13, one end of the hydraulic cylinder 14 extends into the mounting frame 12, a slide rail 15 is arranged above each of the plurality of hydraulic cylinders 14, one end of the slide rail 15 is fixedly connected to the inner side of the mounting frame 12, the other end of the slide rail 15 is fixedly connected to one side of the fixed rod 13, sliders 16 are movably arranged on the outside of the slide rail 15, a claw 161 integrally formed with the slider 16 is arranged at one end of the slider 16, and the piston rod of the hydraulic cylinder 14 penetrates through the mounting frame 12 and is fixedly connected to the side surface of the claw 161.

[0022] In an embodiment of the present utility model, by the cooperation of the provided lead screw 6 and the threaded hole 111, the lifting and lowering of the lifting plate 11 can be controlled by controlling the rotation direction of the lead screw 6, and the goods on the fork 3 can be longitudinally pressed by the provided clamping unit 10. With the cooperation of the provided hydraulic cylinder 14 and the claw 161, the goods can be transversely clamped. Through the fixation in the longitudinal and transverse directions, the rollover and inclination of the goods during the operation can be prevented.

[0023] In an example of the present utility model, during use, first control the hydraulic cylinder 14 to extend to the longest, start the motor 7 to drive the lead screw 6 to rotate, raise the lifting plate 11 to the highest. After forklifting the goods, then control the lifting plate 11 to descend to the height where the mounting frame 12 is at the same level as the upper end of the goods, control the hydraulic cylinder 14 to contract, and laterally clamp the goods through the claw 161.

[0024] As Figure 3 shown, as a preferred embodiment of the present utility model, a first shaft hole 61 is fixedly arranged in the middle of the upper end inside the forklift carriage 1 corresponding to the upper end of the lead screw 6, a second shaft hole 62 is fixedly arranged in the middle of the upper end of the mounting plate 5 corresponding to the lower end of the lead screw 6, and bearings 9 are arranged in both the first shaft hole 61 and the second shaft hole 62.

[0025] Furthermore, the forklift carriage 1 is arranged in a square frame structure, multiple groups of spiral grooves are provided on the outer side of the lead screw 6, and the smooth rod 8 is made of a steel round bar.

[0026] In an example of the present utility model, through the provided forklift carriage 1, together with the lifting mechanism 4, it forms a goods retaining rack, which can protect the safety of the driver. Through the cooperation of the bearings 9 with the first shaft hole 61 and the second shaft hole 62, the rotation of the lead screw 6 becomes smoother, reducing the friction at both ends of the lead screw 6 during work.

[0027] As Figure 3 shown, as a preferred embodiment of the present utility model, the lifting plate 11 is arranged in a "U" shape, a threaded hole 111 adapted to the spiral grooves on the outer side of the lead screw 6 is fixedly arranged at the position of the lifting plate 11 corresponding to the lead screw 6, a movable hole 112 adapted to the diameter of the smooth rod 8 is fixedly arranged at the position of the lifting plate 11 corresponding to the smooth rod 8, the mounting frame 12 is arranged in a "U" shape, and rib plates 17 for strengthening the stiffness are arranged above the connection ends of the mounting frame 12 and the fixed rod 13 with the lifting plate 11.

[0028] In an example of the present utility model, by arranging the lifting plate 11 in a "U" shape, it is convenient for the fixation and limitation of the lifting plate 11. When the lead screw 6 rotates, the lifting plate 11 can move up and down along the axis of the lead screw 6 under the action of the threaded hole 111. Through the provided rib plates 17, the connection stiffness of the mounting frame 12 and the fixed rod 13 with one side of the lifting plate 11 is strengthened, preventing bending deformation and ensuring the overall level of the lifting mechanism 4.

[0029] As Figure 3 shown, as a preferred embodiment of the present utility model, mounting holes 121 adapted to one end of the hydraulic cylinder 14 are arranged at both ends of the mounting frame 12 corresponding to the position of the hydraulic cylinder 14.

[0030] In an example of the present utility model, through the provided mounting holes 121, it is convenient to fix and install the hydraulic cylinder 14. The piston rod of the hydraulic cylinder 14 penetrates through the mounting bracket 12 and is fixedly connected to the side of the claw 161, which is convenient to control the clamping force of the slider 16 by controlling the hydraulic cylinder 14.

[0031] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claimed rights.

[0032] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "mounting", "connecting", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0035] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-rollover structure for an electric forklift, comprising a fork frame (1), wherein the fork frame (1) is movably arranged on one side of a mast (2), and a fork (3) is movably arranged on one side of the fork frame (1), characterized in that: Also includes: A lifting mechanism (4), wherein the lifting mechanism (4) is fixedly arranged above the fork frame (1), and the lifting mechanism (4) comprises a mounting plate (5) for support, wherein both ends of the mounting plate (5) are fixedly connected to the inner side of the fork frame (1), a screw rod (6) is arranged above the middle of the mounting plate (5), and a motor (7) is fixedly arranged at the top of the fork frame (1), wherein the upper end of the screw rod (6) penetrates the upper end of the fork frame (1) and extends to the outside to be fixedly connected to the main shaft of the motor (7), and two groups of light rods (8) parallel to the axis of the screw rod (6) are arranged on both sides of the screw rod (6), wherein the upper end of the light rod (8) is fixedly connected to the upper end of the inner side of the fork frame (1), and the lower end of the light rod (8) is fixedly connected to the upper end of the mounting plate (5); The clamping unit (10) comprises a lifting plate (11) movably arranged outside the screw rod (6) and the smooth rod (8), one side of the lifting plate (11) is fixedly connected to a mounting frame (12), a fixing rod (13) is fixedly arranged in the middle of the mounting frame (12), and multiple groups of hydraulic cylinders (14) are transversely fixedly arranged on both sides of the fixing rod (13), one end of the hydraulic cylinder (14) extends into the mounting frame (12), and the multiple groups of hydraulic cylinders (14) are arranged to move the hydraulic cylinders (14) to the outside of the screw rod (6) and the smooth rod (8), and the lifting plate (11) is fixedly connected to a mounting frame (12) on one side, and a fixing rod (13) is fixedly arranged in the middle of the mounting frame (12), and multiple groups of hydraulic cylinders (14) are transversely fixedly arranged on both sides of the fixing rod (13), and one end of the hydraulic cylinder (14) extends into the mounting frame (12), and the multiple groups of hydraulic cylinders (14) are arranged to move the hydraulic cylinders (14) to the inside of the mounting frame (12). ) are provided above the mounting frame (12), one end of the slide rail (15) is fixedly connected to the inner side of the mounting frame (12), the other end of the slide rail (15) is fixedly connected to one side of the fixing rod (13), a slider (16) is movably provided on the outer side of the slide rail (15), one end of the slider (16) is provided with a claw (161) integrally formed with the slider (16), and the piston rod of the hydraulic cylinder (14) passes through the mounting frame (12) and is fixedly connected to the side of the claw (161).

2. The anti-rollover structure of an electric forklift according to claim 1, characterized in that: A first axial hole (61) is fixedly provided in the middle of the upper inner end of the fork frame (1) corresponding to the upper end of the screw rod (6), and a second axial hole (62) is fixedly provided in the middle of the upper inner end of the mounting plate (5) corresponding to the lower end of the screw rod (6), and bearings (9) are provided in both the first axial hole (61) and the second axial hole (62).

3. The anti-rollover structure of an electric forklift according to claim 2, characterized in that: The fork frame (1) is configured as a square frame structure, the outer side of the lead screw (6) is provided with a plurality of sets of spiral grooves, and the polished rod (8) is configured as a steel round bar.

4. The anti-rollover structure of an electric forklift according to claim 3, characterized in that: The lifting plate (11) is configured as a "U"-shaped structure, a threaded hole (111) adapted to the spiral groove on the outer side of the screw rod (6) is fixedly provided at a position of the lifting plate (11) corresponding to the screw rod (6), a movable hole (112) adapted to the diameter of the screw rod (8) is fixedly provided at a position of the lifting plate (11) corresponding to the light rod (8), the mounting frame (12) is configured as a "U"-shaped structure, and ribs (17) for strengthening rigidity are provided above the connection ends of the mounting frame (12) and the fixed rod (13) with the lifting plate (11).

5. The anti-rollover structure of an electric forklift according to claim 4, characterized in that: Mounting holes (121) adapted to one end of the hydraulic cylinder (14) are provided at positions at both ends of the mounting frame (12) corresponding to the hydraulic cylinder (14).

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