Lifting portal frame for electric forklift

Abstract

The utility model relates to the field of electric forklifts, and discloses a lifting portal frame for an electric forklift, the lifting portal frame comprises an outer portal frame, lifting grooves are formed in the two sides of the outer surface of the outer portal frame, the two lifting grooves are symmetrically distributed relative to the outer portal frame, and sliding blocks are slidably connected to one sides of the interiors of the lifting grooves; a lead screw is rotationally connected to the center position of the inner wall of the outer door frame. A first motor and a second motor are started, a lead screw is in transmission connection with a nut assembly, and meanwhile, the second motor drives a second lifting chain wheel to rotate, so that the lead screw rotates to drive a goods blocking frame to ascend and descend along the outer wall of the outer door frame; and meanwhile, a second lifting chain wheel rotates to enable a steel rope fixed to the second lifting chain wheel to contract, so that the steel rope is contracted to drive the goods blocking frame to be pulled, and the effects that due to the fact that electric driving is adopted, the pollution problem caused by original hydraulic transmission does not exist, and the device is more environmentally friendly, cleaner, tidier and suitable for the working environment of a dust-free room are achieved.

Description

Technical Field

[0001] The present application relates to the field of electric forklifts, and in particular to a lifting mast for electric forklifts. Background Art

[0002] As an industrial handling vehicle, a forklift refers to various wheeled handling vehicles that are used for loading and unloading, stacking and short-distance transportation of palletized goods. Forklifts play a very important role in the logistics system of an enterprise and are the main force in material handling equipment. The front of the forklift is equipped with a forklift frame that can be raised and lowered to carry and load and unload goods, and is used for the transportation of large objects in warehousing.

[0003] At present, the fork lifting system used by the forklift adopts a pure manual hydraulic jack to achieve the lifting function, which has low operating efficiency, and the hydraulic jack has problems such as hydraulic oil leakage, is difficult to keep clean, and is troublesome to maintain.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problems of low operating efficiency and troublesome maintenance of forklifts, the present application provides a lifting mast for an electric forklift.

[0006] The present application provides a lifting gantry for an electric forklift using the following technical solution:

[0007] A lifting gantry for an electric forklift comprises an outer gantry, wherein lifting grooves are provided on both sides of the outer surface of the outer gantry, and the two lifting grooves are symmetrically distributed with respect to the outer gantry, a slider is slidably connected to the inner side of the lifting grooves, a screw rod is rotatably connected to the center of the inner wall of the outer gantry, and the screw rod extends to the outside of the outer gantry, and a nut assembly is threadedly connected to one side of the outer wall of the screw rod.

[0008] Preferably, the outer surface of the outer door frame is liftingly connected to a shelf guard via the two sliding blocks and the nut assembly, and both sides of the outer surface of the shelf guard are fixedly connected to fork frames.

[0009] Preferably, a mounting frame is fixedly connected to one side of the upper surface of the outer door frame, a reducer is fixedly connected at the center position of the upper surface of the outer door frame, a first motor is fixedly connected to the upper surface of the outer door frame through the mounting frame and the reducer, and a driving end of the reducer is fixedly connected to one side of the screw rod.

[0010] Preferably, connecting plates are fixedly connected to both sides of the outer surface of the outer door frame, and two second motors are fixedly connected to the outer surface of the outer door frame through the two connecting plates. The driving ends of the second motors pass through the inner walls of the connecting plates and are fixedly connected to the second lifting sprockets.

[0011] Preferably, both sides of the upper surface of the shelf baffle are fixedly connected with fixing plates, the second lifting sprocket and the fixing plates are connected by steel ropes, and one side of the inner wall of the outer door frame is fixedly connected with a blocking plate.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] By starting the first motor and the second motor, through the transmission connection between the lead screw and the nut assembly, and at the same time driving the second lifting sprocket to rotate through the second motor, the shelf retaining device is lifted and lowered along the outer wall of the outer door frame through the rotation of the lead screw, and at the same time, the second lifting sprocket rotates to shrink the steel rope fixed on the second lifting sprocket, so that the shrinkage of the steel rope drives the shelf retaining device to be pulled; compared with the prior art, since it adopts electric drive, there is no pollution problem caused by the original hydraulic transmission, it is more environmentally friendly, clean and tidy, and suitable for the working environment of a dust-free room. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the lifting gantry of the embodiment of the application;

[0015] Figure 2 is a structural schematic diagram of a cross-section of a lifting gantry of an embodiment of the application;

[0016] Figure 3 It is a schematic diagram of the structure of the lifting door frame of the embodiment of the application from a top view.

[0017] Explanation of the reference numerals: 1. outer door frame; 2. mounting frame; 3. first motor; 4. reducer; 5. second lifting sprocket; 6. steel rope; 7. connecting plate; 8. second motor; 9. blocking plate; 10. lifting slot; 11. screw rod; 12. fixing plate; 13. shelf stop; 14. fork frame; 15. slider; 16. nut assembly. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-3 This application is described in further detail.

[0019] The present application embodiment discloses a lifting mast for an electric forklift. Figure 1 , Figure 2 and Figure 3A lifting gantry for an electric forklift, on the outer surface of the outer gantry 1, lifting grooves 10 are opened on both sides thereof, and the two lifting grooves 10 are symmetrically distributed on the outer gantry 1, inside the lifting grooves 10, a slider 15 is slidably connected through one side thereof, on the inner wall of the outer gantry 1, a screw rod 11 is rotatably connected through the center position thereof, and the screw rod 11 extends to the outside of the outer gantry 1, on the outer wall of the screw rod 11, a nut assembly 16 is threadedly connected through one side thereof, on the outer surface of the outer gantry 1, a backstop 13 is lifted and connected through two sliders 15 and the nut assembly 16, on the outer surface of the backstop 13, a fork frame 14 is fixedly connected through both sides thereof;

[0020] By adopting the above technical scheme, the slider 15 is connected to the shelf baffle 13, the shelf baffle 13 is connected to the nut assembly 16, and the screw rod 11 is connected to the nut assembly 16, and then the screw rod 11 rotates to drive the shelf baffle 13 to move up and down along the outer wall of the outer door frame 1, and the shelf baffle 13 is connected to the two fork frames 14, so that the two fork frames 14 are driven to move up and down, thereby driving the two fork frames 14 to lift and lower the goods. This structure has a wide field of view in the middle of the door frame, which is convenient for personnel to observe the moving goods in real time, thereby achieving the effect of facilitating the lifting of goods.

[0021] Reference Figure 1 and Figure 3 On the upper surface of the outer door frame 1, a mounting frame 2 is fixedly connected through one side thereof, on the upper surface of the outer door frame 1, a reducer 4 is fixedly connected through the center position thereof, on the upper surface of the outer door frame 1, a first motor 3 is fixedly connected through the mounting frame 2 and the reducer 4, and the driving end of the reducer 4 is fixedly connected to one side of the screw rod 11;

[0022] By adopting the above technical solution, the torque of the first motor 3 is increased by connecting the first motor 3 with the reducer 4, and the reducer 4 is connected through the screw rod 11, so that the screw rod 11 rotates to drive the shelf 13 to move up and down, thereby achieving the effect of facilitating the lifting and lowering of the goods.

[0023] Reference Figure 1 and Figure 2 On the outer surface of the outer door frame 1, connecting plates 7 are fixedly connected on both sides thereof, and two second motors 8 are fixedly connected to the outer surface of the outer door frame 1 through two connecting plates 7. The driving ends of the second motors 8 penetrate the inner wall of the connecting plate 7 and are fixedly connected to the second lifting sprocket 5. On the upper surface of the backstop shelf 13, fixing plates 12 are fixedly connected on both sides thereof, and the second lifting sprocket 5 and the fixing plate 12 are connected by steel ropes 6. On the inner wall of the outer door frame 1, a blocking plate 9 is fixedly connected on one side thereof;

[0024] By adopting the above technical solution, the second lifting sprocket 5 is connected to the fixed plate 12 by the steel rope 6, and the second motor 8 is connected to the second lifting sprocket 5, so that the second motor 8 drives the second lifting sprocket 5 to rotate, and then the second lifting sprocket 5 rotates to make the steel rope 6 fixed on the second lifting sprocket 5 contract or stretch, so that the steel rope 6 contracts to drive the shelf 13 to be lifted and lowered, thereby achieving the effect of increasing the force that drives the shelf 13 to be lifted and lowered, so that the shelf 13 can be lifted and lowered stably.

[0025] The implementation principle of a lifting gantry for an electric forklift in the embodiment of the present application is as follows: the fork frame 14 is manipulated to move the goods onto the fork frame 14, and the first motor 3 and the second motor 8 are started, and the screw rod 11 is connected to the reducer 4, so that the screw rod 11 rotates to drive the shelf 13 to be lifted and lowered, and the screw rod 11 is connected to the nut assembly 16 through a transmission connection, and the second motor 8 drives the second lifting sprocket 5 to rotate at the same time, so that the screw rod 11 rotates to drive the shelf 13 to be lifted and lowered along the outer wall of the outer gantry 1, and at the same time, the second lifting sprocket 5 rotates to cause the steel rope 6 fixed on the second lifting sprocket 5 to contract or stretch, so that the steel rope 6 is contracted to drive the shelf 13 to be lifted and lowered, thereby realizing the lifting and lowering of the goods.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0029] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lifting mast for an electric forklift, comprising an outer mast (1), characterized in that: Both sides of the outer surface of the outer door frame (1) are provided with lifting grooves (10), and the two lifting grooves (10) are symmetrically distributed with respect to the outer door frame (1), and a slider (15) is slidably connected to the inner side of the lifting groove (10), and a screw rod (11) is rotatably connected to the center position of the inner wall of the outer door frame (1), and the screw rod (11) extends to the outside of the outer door frame (1), and a nut assembly (16) is threadedly connected to one side of the outer wall of the screw rod (11).

2. A lifting mast for an electric forklift according to claim 1, characterized in that: The outer surface of the outer door frame (1) is connected to a shelf (13) in a lifting manner via two slide blocks (15) and a nut assembly (16), and both sides of the outer surface of the shelf (13) are fixedly connected to a fork frame (14).

3. The lifting mast for an electric forklift according to claim 1, characterized in that: A mounting frame (2) is fixedly connected to one side of the upper surface of the outer door frame (1), a reducer (4) is fixedly connected at the center position of the upper surface of the outer door frame (1), a first motor (3) is fixedly connected to the upper surface of the outer door frame (1) via the mounting frame (2) and the reducer (4), and a driving end of the reducer (4) is fixedly connected to one side of the screw rod (11).

4. A lifting mast for an electric forklift according to claim 2, characterized in that: Both sides of the outer surface of the outer door frame (1) are fixedly connected to connecting plates (7), and the outer surface of the outer door frame (1) is fixedly connected to two second motors (8) via the two connecting plates (7), and the driving ends of the second motors (8) pass through the inner walls of the connecting plates (7) and are fixedly connected to the second lifting sprocket (5).

5. A lifting mast for an electric forklift according to claim 4, characterized in that: Both sides of the upper surface of the shelf (13) are fixedly connected to fixed plates (12), the second lifting sprocket (5) and the fixed plates (12) are connected via a steel rope (6), and one side of the inner wall of the outer door frame (1) is fixedly connected to a blocking plate (9).

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