Forklift truck with limit stop

Abstract

The utility model discloses a kind of forklifts with limit, including mobile chassis and the two symmetrical U-shaped stands of being set on the mobile chassis one end, the bottom of stand and the bottom of mobile chassis are respectively connected with first gyro wheel and second gyro wheel, the inside of stand is slidably connected with first portal frame, the inside wall of first portal frame is sliding slot, second portal frame is slidably connected in sliding slot by auxiliary pulley, the bottom of second portal frame is connected with bracket, first portal frame and second portal frame are controlled lifting by drive assembly mounted on stand, limit switch is installed on drive assembly, the head of limit switch is placed directly above the top of second portal frame, two stands are connected between the middle portion of two stands by cross bar, handle is installed on cross bar.The utility model uses first portal frame to drive second portal frame to be elevated, improve the lifting height of goods, expand the application range of equipment, greatly improve work efficiency, save labor, and prevent equipment damage by limiting device.

Description

Technical Field

[0001] This utility model relates to the field of forklift technology, and in particular to a forklift with a limit switch. Background Technology

[0002] Forklifts (loading machines) are industrial material handling vehicles, referring to various wheeled handling vehicles used for loading, unloading, stacking, and short-distance transportation of palletized goods. They are widely used in railway stations, ports, airports, factories, warehouses, and other sectors of the national economy, serving as highly efficient equipment for mechanized loading, unloading, stacking, and short-distance transportation. With societal development, the operating environment for forklifts has become increasingly complex. To adapt to the diverse functional needs of forklifts, higher requirements have been placed on their design and manufacturing, enabling them to lift goods to a certain height.

[0003] Most current forklifts only have one mast, which means that the height of the goods can only be raised above the mast. This makes it impossible for existing forklifts to work in some extremely high operating environments, requiring a lot of manual labor to raise the goods, which greatly reduces work efficiency, increases labor costs, and lacks limit devices, so the mast cannot be stopped in time, which can easily cause damage to the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a forklift with a limit switch to solve the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model discloses a forklift with a limit switch, comprising a movable base frame and two symmetrically arranged U-shaped uprights connected to one end of the telescopic movable base frame. The bottom of the uprights and the bottom of the movable base frame are respectively connected to a first roller and a second roller. A first mast is slidably connected to the inner side of the uprights. The inner side wall of the first mast is a groove, and a second mast is slidably connected to the groove through an auxiliary pulley. A bracket is connected to the bottom of the second mast. The first mast is controlled to lift and lower by a drive assembly installed on the uprights. A limit switch is installed on the drive assembly, and the actuating head of the limit switch is located directly above the bottom of the first mast. The middle parts of the two uprights are connected by a crossbar, and a handle is installed on the crossbar.

[0006] Furthermore, the first roller is rotatably connected to the mounting base, the top of the mounting base is connected to a fixing rod, the other end of the fixing rod is connected to the upright, and the bottom of the drive assembly is fixed to the fixing rod.

[0007] Furthermore, the drive assembly includes an equipment box fixed to the upright and the fixed rod. A winch is installed inside the equipment box. The end of the wire rope on the winch passes sequentially around a fixed pulley one installed at the bottom of the crossbar, a fixed pulley two installed on the first gantry, and a fixed pulley three installed on the top bottom surface of the first gantry before being fixed to a crossbeam one of the second gantry. The crossbeam two at the bottom of the first gantry and the base of the fixed pulley two are fastened together by bolts. A section of the wire rope is fixed to the crossbar by a fastening assembly. The winch is connected to a controller via a cable. The controller is snapped onto a clamp, which is fixed to the end of the crossbar.

[0008] Furthermore, a storage battery is installed inside the equipment box. The equipment box includes a front cover, a left cover, a right cover, and a storage battery installed inside the equipment box. A power and voltage display and a metal button power switch are installed on the top of the front cover. There is an opening on one side of the front cover. The forklift charger is placed inside the equipment box. The charging cable and plug pass through the opening to connect to an external power source to charge the storage battery.

[0009] Furthermore, a Bluetooth control terminal is connected to the crossbar, and the Bluetooth control terminal is wirelessly connected to the controller.

[0010] Furthermore, wear-resistant strips are provided in the gap between the upright frame and the first gantry. There are eight wear-resistant strips. Two wear-resistant strips are installed on the top of the upright frame facing the bracket. Two wear-resistant strips are installed in the adjusting sleeves welded on the left and right sides of the top of the upright frame. The adjusting sleeves can be adjusted by bolts. Two wear-resistant strips are installed in the adjusting sleeves welded on the left and right sides of the bottom of the first gantry. Two wear-resistant strips are installed on the bottom of the first gantry facing the equipment box.

[0011] Furthermore, the fastening assembly includes a wire rope fixing plate welded to one end face of the crossbar and a wire rope tightening plate bolted to the wire rope fixing plate. The wire rope tightening plate fixes the wire rope to the wire rope fixing plate and divides the wire rope into two sections for independent use.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This utility model employs two masts, enabling the second mast to move up and down with the first mast, while the first mast can move up and down along the upright, thereby greatly increasing the lifting height of goods, expanding the applicability of the equipment, significantly improving work efficiency, saving labor, and limiting the lifting height of the first mast by a limit switch to prevent the first mast from going too high and to prevent the first mast from detaching from the upright. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the forklift structure with limiting function according to this utility model; Figure 2 Two schematic diagrams illustrating the forklift structure with limiting function according to this utility model; Figure 3 This is a front view of the forklift with limiters according to this utility model; Figure 4 This is a side view of the forklift with the limit switch of this utility model; Figure 5 This is a top view of the forklift with limiters according to this utility model; Figure 6 This is a rear view of the forklift with limiters according to the present invention; Figure 7 A schematic diagram of the wire rope installation structure; Figure 8 A schematic diagram of the wear-resistant strip installation structure; Figure 9 Two schematic diagrams showing the installation structure of the wear-resistant strip; Figure 10 Three diagrams illustrating the installation structure of the wear-resistant strip; Explanation of reference numerals in the attached drawings: 1. Movable base frame; 2. Vertical frame; 3. First roller; 4. Second roller; 5. First gantry; 6. Second gantry; 7. Limit switch; 8. Mounting base; 9. Fixed rod; 10. Equipment box; 11. Winch; 12. Crossbar; 13. Handle; 14. Fixed pulley one; 15. Fixed pulley two; 16. Fixed pulley three; 17. Bracket; 18. Controller; 19. Clip; 20. Bluetooth control terminal; 21. Crossbeam one; 22. Wire rope fixing plate; 23. Wire rope tightening plate; 24. Crossbeam two; 25. Base; 26. Front cover; 27. Left cover; 28. Right cover; 29. ​​Power and voltage display; 30. Metal button power switch; 31. Opening; 33. Wear-resistant strip; 35. Adjusting sleeve. Detailed Implementation

[0015] like Figure 1-10 As shown, a forklift with a limiter includes a movable base frame 1 and two symmetrically arranged U-shaped uprights 2 connected to one end of the movable base frame 1. The bottom of the uprights 2 and the bottom of the movable base frame 1 are respectively connected to a first roller 3 and a second roller 4. The first roller 3 is rotatably connected to a mounting base 8. The top of the mounting base 8 is connected to a fixing rod 9. The other end of the fixing rod 9 is connected to the uprights 2. The bottom of the drive assembly is fixed to the fixing rod 9.

[0016] The inner side of the upright frame 2 is slidably connected to a first gantry 5. The inner wall of the first gantry 5 is a sliding groove. A second gantry 6 is slidably connected in the sliding groove through an auxiliary pulley. A bracket 17 is connected to the bottom of the second gantry 6. The first gantry 5 is controlled to rise and fall by a drive assembly installed on the upright frame 2. A limit switch 7 is installed on the drive assembly. The toggle head of the limit switch 7 is located directly above the bottom of the first gantry 5. The middle parts of the two upright frames 2 are connected by a crossbar 12. A handle 13 is installed on the crossbar 12.

[0017] The fastening assembly includes a wire rope fixing plate 22 welded to one end face of the crossbar 12 and a wire rope tightening plate 23 bolted to the wire rope fixing plate 22. The wire rope tightening plate 23 fixes the wire rope to the wire rope fixing plate 22 and divides the wire rope into two sections for independent use.

[0018] The drive assembly includes an equipment box 10 fixed to the upright 2 and the fixed rod 9. A winch 11 is installed inside the equipment box 10. The end of the wire rope on the winch 11 passes sequentially over a fixed pulley 14 installed at the bottom of the crossbar 12, a fixed pulley 15 installed on the first gantry 5, and a fixed pulley 16 installed on the top bottom surface of the first gantry 5 before being fixed to the crossbeam 21 of the second gantry 6. The crossbeam 24 at the bottom of the first gantry 5 and the base 25 of the fixed pulley 15 are fastened together with bolts. The middle section of the wire rope is fixed to the crossbar 12 by a fastening assembly. The winch 11 is connected to a controller 18 via a cable. The controller 18 is snapped onto a clamp 19, which is fixed to the end of the crossbar 12.

[0019] The equipment box 10 contains a storage battery. The equipment box 10 includes a front cover 26, a left cover 27, a right cover 28, and a storage battery installed inside the equipment box 10. A power voltage display 29 and a metal button power switch 30 are installed on the top of the front cover 26. There is an opening 31 on one side of the front cover 26. The forklift charger is placed inside the equipment box. The charging cable and plug pass through the opening 31 to connect to an external power source to charge the storage battery.

[0020] A Bluetooth control terminal 20 is connected to the crossbar 12. The Bluetooth control terminal 20 is wirelessly connected to the controller 18, and the winch 11 can be controlled to work through the Bluetooth control terminal 20.

[0021] Wear-resistant strips 33 are provided in the gap between the upright frame 2 and the first gantry 5. There are eight wear-resistant strips 33. Two wear-resistant strips 33 are installed on the top of the upright frame 2 facing the bracket 17. Two wear-resistant strips 33 are installed inside adjusting sleeves 35 welded to the left and right sides of the top of the upright frame 2. The adjusting sleeves 35 are adjustable with bolts. Two wear-resistant strips 33 are installed inside adjusting sleeves 35 welded to the left and right sides of the bottom of the first gantry 5. Two wear-resistant strips 33 are installed on the bottom of the first gantry 5 facing the equipment box 10. These wear-resistant strips fill the gap between the upright frame 2 and the first gantry 5, preventing the first gantry 5 from swaying during lifting and lowering.

[0022] The operation process of this utility model is as follows: In use, the winch 11 is started via the controller 18 or the Bluetooth control terminal 20. The winch 11 continuously winds up the wire rope, thereby continuously raising the first gantry 5 and the second gantry 6, which in turn raises the bracket 17 until the limit switch 7 is touched by the bottom of the first gantry 5, at which point the winch 11 stops working and is at its highest position.

[0023] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A forklift truck with a limit, characterized by: The system includes a movable base (1) and two symmetrically arranged U-shaped uprights (2) connected to one end of the movable base (1). The bottom of the uprights (2) and the bottom of the movable base (1) are respectively connected to a first roller (3) and a second roller (4). The inner side of the uprights (2) is slidably connected to a first gantry (5). The inner side wall of the first gantry (5) is a groove. The second gantry (6) is slidably connected in the groove through an auxiliary pulley. The bottom of the second gantry (6) is connected to a bracket (17). The first gantry (5) is controlled to rise and fall by a drive assembly installed on the uprights (2). A limit switch (7) is installed on the drive assembly. The toggle head of the limit switch (7) is located directly above the bottom of the first gantry (5). The middle parts of the two uprights (2) are connected by a crossbar (12). A handle (13) is installed on the crossbar (12).

2. The forklift truck with a limiter according to claim 1, characterized in that: The first roller (3) is rotatably connected to the mounting base (8), the top of the mounting base (8) is connected to a fixing rod (9), the other end of the fixing rod (9) is connected to the upright frame (2), and the bottom of the drive assembly is fixed to the fixing rod (9).

3. The forklift truck with a limiter according to claim 2, characterized in that: The drive assembly includes an equipment box (10) fixed on the upright (2) and the fixed rod (9). A winch (11) is installed in the equipment box (10). The end of the wire rope on the winch (11) passes in sequence around a fixed pulley one (14) installed at the bottom of the crossbar (12), a fixed pulley two (15) installed on the first gantry (5), and a fixed pulley three (16) installed on the top bottom surface of the first gantry (5) before being fixed to the crossbeam one (21) of the second gantry (6). The base (25) of the crossbeam two (24) at the bottom of the first gantry (5) and the fixed pulley two (15) is fastened by bolts. The middle section of the wire rope is fixed to the crossbar (12) by a fastening assembly. The winch (11) is connected to a controller (18) by a cable. The controller (18) is snapped into a clamp (19). The clamp (19) is fixed to the end of the crossbar (12).

4. The forklift truck with a limiter according to claim 3, characterized in that: The equipment box (10) contains a storage battery. The equipment box (10) includes a front cover (26), a left cover (27), a right cover (28), and a storage battery installed inside the equipment box (10). A power voltage display (29) and a metal button power switch (30) are installed on the top of the front cover (26). There is an opening (31) on one side of the front cover (26). The forklift charger is placed inside the equipment box. The charging wire and plug pass through the opening (31) to connect to an external power source to charge the storage battery.

5. The fork truck with a limiter according to claim 4, wherein: A Bluetooth control terminal (20) is connected to the crossbar (12), and the Bluetooth control terminal (20) is wirelessly connected to the controller (18).

6. The forklift truck with a limiter according to claim 5, characterized in that: Wear-resistant strips (33) are provided in the gap between the upright (2) and the first gantry (5). There are eight wear-resistant strips (33). Two wear-resistant strips (33) are installed on the top of the upright (2) facing the bracket (17). Two wear-resistant strips (33) are installed in the adjusting sleeves (35) welded on the left and right sides of the top of the upright (2). The adjusting sleeves (35) can be adjusted by bolts. Two wear-resistant strips (33) are installed in the adjusting sleeves (35) welded on the left and right sides of the bottom of the first gantry (5). Two wear-resistant strips (33) are installed on the bottom of the first gantry (5) facing the equipment box (10).

7. The fork truck with a limiter according to claim 6, wherein: The fastening assembly includes a wire rope fixing plate (22) welded to one end face of the crossbar (12) and a wire rope tightening plate (23) bolted to the wire rope fixing plate (22). The wire rope tightening plate (23) fixes the wire rope to the wire rope fixing plate (22) and divides the wire rope into two sections for independent use.

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