Stable frame structure for a reach truck

Abstract

The utility model discloses a stable type frame structure for stacking truck, including the chassis, the upper end both sides of chassis are fixedly connected with the stand column portal, the top between two stand column portal is fixedly connected with the transverse board, is provided with the mount frame to the side close to stand column portal, just mount frame and chassis fixedly connected, the both sides of mount frame all are rotatably connected with the support trundle, the both sides upper end of chassis all are fixedly connected with the connecting seat, two connecting seat's bottom all are fixedly installed with universal wheel, the inside fixed welding of mount frame has the protective housing, the inside fixed mounting of protective housing has double shaft motor, two sides output of double shaft motor all are through the shaft coupling drive connection has the transmission shaft, just transmission shaft and support trundle fixed connection, the stable type frame structure for stacking truck of the utility model solves the problem such as poor stability of the existing technology in stacking truck, lack of damping function, no manual emergency descending capacity etc.

Description

Technical Field

[0001] This utility model relates to the field of stacker technology, specifically to a stable frame structure for stackers. Background Technology

[0002] Forklifts are commonly used loading and unloading equipment in warehousing, logistics, and manufacturing workshops, mainly for the vertical stacking and horizontal transport of palletized goods. With the increase in automation, the lifting height and operating efficiency of forklifts have been continuously improved, but problems such as poor stability, easy tipping, and bumpy ride when operating at heights have become increasingly prominent.

[0003] Most current stackers use fixed casters, which cause significant vibration when running on uneven ground, affecting operator comfort and cargo safety. Furthermore, when the forks are raised to a high position, the vehicle's center of gravity shifts forward, making it easy for the rear wheels to lift off the ground and reducing its resistance to tipping over. Therefore, we have proposed a stable frame structure for stackers. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model relates to a stable frame structure for stackers, comprising a base frame, with upright masts fixedly connected to both sides of the upper end of the base frame, a horizontal plate fixedly connected between the tops of the two upright masts, a mounting frame provided on the side near the upright masts and fixedly connected to the base frame, support casters rotatably connected to both sides of the mounting frame, connecting seats fixedly connected to the upper ends of both sides of the base frame, universal wheels fixedly installed at the bottom of the two connecting seats, a protective shell fixedly welded inside the mounting frame, and bases symmetrically fixedly connected to the upper outer side of the base frame, with dampers fixedly connected to the upper ends of the two bases, and guide seats slidably connected to the outer periphery of the dampers.

[0006] As a preferred embodiment of this utility model, a servo motor is fixedly installed on one side of the guide seat. The output end of the servo motor is connected to the support caster via a coupling through the guide seat. A fixing plate is fixedly connected to the top of the damper. A return spring is sleeved on the outer periphery of the upper end of the damper, and the two ends of the return spring are respectively fixedly connected to the top of the guide seat and the bottom of the fixing plate.

[0007] As a preferred technical solution of this utility model, rubber buffer columns are provided on both sides of the guide seat, and the two ends of the rubber buffer columns are respectively fixedly connected to the top of the base frame and the bottom of the fixing plate.

[0008] As a preferred embodiment of this utility model, guide rails are fixedly connected to both outer walls of the column frame, and a fork carriage is slidably connected inside the guide rails. Two fork rods are bolted to one side of the fork carriage.

[0009] As a preferred technical solution of this utility model, a geared motor is fixedly installed below the column mast. The output end of the geared motor is connected to a threaded rod through a coupling. A threaded block is threadedly connected to the outer circumference of the threaded rod, and the threaded block is fixedly connected to the fork carriage.

[0010] As a preferred embodiment of this utility model, a worm gear is fixedly connected to the lower outer periphery of the threaded rod, a worm is drivenly connected to the outer periphery of the worm gear, and a handwheel is fixedly connected to one end of the worm through the mounting bracket.

[0011] As a preferred embodiment of this utility model, a door is rotatably connected to one side of the mounting frame via a hinge, a battery is fixedly installed on the top of the protective shell, and the battery is electrically connected to a servo motor and a geared motor. Several counterweights are movably connected to one side of the interior of the mounting frame, and a protective plate is fixedly connected to the top of the mounting frame.

[0012] The beneficial effects of this utility model are:

[0013] 1. This type of stable frame structure for stacker trucks enables autonomous movement by driving support casters with a servo motor, and combines a damper and a return spring to form a shock absorption system, which effectively absorbs ground impact vibrations and improves driving stability and operating comfort.

[0014] 2. This type of stacker truck with a stable frame structure uses a geared motor and a threaded rod to drive the lifting of the forks, and is equipped with a worm gear transmission pair connected to the handwheel to realize the dual-mode switching of electric lifting and manual emergency, ensuring that the forks can still be safely lowered in the event of power failure or malfunction, thus improving system safety;

[0015] 3. This type of stable frame structure for stackers, by setting a detachable counterweight inside the mounting frame, allows for flexible adjustment of the counterweight according to the load weight, optimizing the overall center of gravity distribution of the vehicle and significantly improving the anti-rollover capability for high-altitude operations; this utility model has a simple and reasonable structure, novel design, and simple and convenient operation, and has high practical value. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional view of the stable frame structure for stacked vehicles according to this utility model;

[0018] Figure 2 This is a schematic diagram of the threaded rod structure of the stable frame structure for stacked vehicles of this utility model;

[0019] Figure 3 This is a schematic diagram of the worm gear structure of the stable frame structure for stacked vehicles of this utility model;

[0020] Figure 4 This is a schematic diagram of the rubber buffer column structure of the stable frame structure for stacked vehicles of this utility model;

[0021] Figure 5 This is a schematic diagram of the return spring structure of the stable frame structure for stacker vehicles according to this utility model.

[0022] In the diagram: 1. Base frame; 2. Column mast; 3. Horizontal plate; 4. Mounting bracket; 5. Support casters; 6. Connecting seat; 7. Casters; 8. Protective shell; 9. Servo motor; 10. Base; 11. Guide seat; 12. Return spring; 13. Fixing plate; 14. Rubber buffer column; 15. Guide rail; 16. Fork carriage; 17. Fork rod; 18. Gear motor; 19. Threaded rod; 20. Threaded block; 21. Worm gear; 22. Worm; 23. Handwheel; 24. Door; 25. Battery; 26. Counterweight; 27. Protective plate. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] Example: Figures 1-5 As shown, the present invention relates to a stable frame structure for stacker trucks, comprising a base frame 1, with upright masts 2 fixedly connected to the upper two sides of the base frame 1, a horizontal plate 3 fixedly connected between the tops of the two upright masts 2, a mounting frame 4 provided on the side near the upright masts 2, and the mounting frame 4 fixedly connected to the base frame 1, with support casters 5 rotatably connected to both sides of the mounting frame 4, connecting seats 6 fixedly connected to the upper ends of both sides of the base frame 1, universal wheels 7 fixedly installed at the bottom of the two connecting seats 6, a protective shell 8 fixedly welded inside the mounting frame 4, and bases 10 symmetrically fixedly connected to the upper outer side of the base frame 1, with dampers fixedly connected to the upper ends of the two bases 10, and guide seats 11 slidably connected to the outer periphery of the dampers.

[0025] A servo motor 9 is fixedly installed on one side of the guide seat 11. The output end of the servo motor 9 is connected to the support caster 5 through the guide seat 11 via a coupling. A fixed plate 13 is fixedly connected to the top of the damper. A return spring 12 is sleeved on the outer periphery of the upper end of the damper. The two ends of the return spring 12 are fixedly connected to the top of the guide seat 11 and the bottom of the fixed plate 13, respectively. The support caster 5 is driven by the servo motor 9 to achieve autonomous walking. The return spring 12 and the damper work together to effectively absorb the ground impact vibration.

[0026] The guide seat 11 is provided with rubber buffer posts 14 on both sides, and the two ends of the rubber buffer posts 14 are fixedly connected to the top of the base frame 1 and the bottom of the fixed plate 13 respectively. The rubber buffer posts 14 further absorb residual impact energy during severe bumps, prevent hard collisions, and improve driving stability.

[0027] The column gantry 2 has guide rails 15 fixedly connected to both outer walls. The guide rails 15 are slidably connected to the fork carriage 16. Two fork rods 17 are bolted to one side of the fork carriage 16. The guide rails 15 provide stable guidance for the fork carriage 16, ensuring smooth lifting without swaying, and improving stacking accuracy and operational safety.

[0028] Among them, a geared motor 18 is fixedly installed below the column mast 2. The output end of the geared motor 18 is connected to a threaded rod 19 through a coupling. A threaded block 20 is connected to the outer circumference of the threaded rod 19, and the threaded block 20 is fixedly connected to the fork carriage 16. The smooth lifting and lowering of the forks is achieved through the geared motor 18 and the threaded transmission. The structure is simple, the transmission accuracy is high, and the self-locking performance is good.

[0029] The lower outer periphery of the threaded rod 19 is fixedly connected to a worm gear 21, and the outer periphery of the worm gear 21 is connected to a worm 22. One end of the worm 22 passes through the mounting bracket 4 and is fixedly connected to a handwheel 23. In case of power failure or control system failure, emergency operation can be performed manually by turning the handwheel 23 to drive the worm 22 to rotate, which in turn drives the worm gear 21 that meshes with it to rotate, thereby controlling the threaded rod 19 to slowly reverse and causing the fork carriage 16 to descend at a uniform speed, ensuring the safety of goods and personnel.

[0030] The mounting frame 4 has a hinged door 24 connected to one side. A battery 25 is fixedly installed on the top of the protective shell 8 and is electrically connected to the servo motor 9 and the geared motor 18. Several counterweights 26 are movably connected to one side of the interior of the mounting frame 4. A protective plate 27 is fixedly connected to the top of the mounting frame 4. The protective plate 27 can protect the operator and ensure driving safety.

[0031] Working Principle: When in use, the power is connected, and the battery 25 supplies power to the two servo motors 9 and the geared motor 18. The servo motors 9 drive the support casters 5 to rotate via couplings, enabling the stacker to move autonomously. During movement, when the support casters 5 encounter ground bumps or depressions, the guide seat 11 is subjected to force and slides upwards along the guide direction of the damper, compressing the return spring 12, effectively absorbing impact energy and preventing vibration from being transmitted to the vehicle body. When the external force disappears, the return spring 12 releases its elastic potential energy, pushing the guide seat 11 to return to its normal position. Simultaneously, the rubber buffer pillars 14 on both sides provide multiple buffer protection during compression and recovery, further improving driving stability and operational comfort. The lifting and lowering of the forks is driven by the geared motor 18. After the motor starts, it drives the threaded rod 19 to rotate via the coupling. The threaded block 20 moves up and down along the threaded rod 19 under the action of threaded transmission. The fork carriage 16 moves linearly along the guide rail 15, enabling the smooth lifting and lowering of the fork lever 17 to complete pallet stacking or picking operations. In case of power failure or control system malfunction, emergency operation can be performed manually by turning the handwheel 23, which drives the worm gear 22 to rotate, thereby controlling the threaded rod 19 to slowly reverse, allowing the fork carriage 16 to descend at a uniform speed, ensuring the safety of goods and personnel. In addition, the counterweight 26 can be added or removed inside the mounting frame 4 according to the actual load conditions to adjust the weight of the rear of the vehicle, optimize the center of gravity distribution, and significantly improve the anti-tipping ability when working at height. The door 24 can be opened for maintenance, the structure is safe and reliable, and maintenance is convenient. The protective plate 27 can protect the operator and ensure driving safety.

[0032] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stable frame structure for a stacker truck, comprising a base frame (1), characterized in that, The upper sides of the base frame (1) are fixedly connected to the column frame (2), and the top of the two column frames (2) are fixedly connected to the horizontal plate (3). A mounting bracket (4) is provided on the side near the column frame (2), and the mounting bracket (4) is fixedly connected to the base frame (1). Support casters (5) are rotatably connected to both sides of the mounting bracket (4). Connecting seats (6) are fixedly connected to the upper ends of both sides of the base frame (1). Universal wheels (7) are fixedly installed at the bottom of the two connecting seats (6). A protective shell (8) is fixedly welded inside the mounting bracket (4). Bases (10) are symmetrically fixedly connected to the upper outer side of the base frame (1). Damperes are fixedly connected to the upper ends of the two bases (10). Guide seats (11) are slidably connected to the outer periphery of the dampers.

2. The stable frame structure for stacker vehicles according to claim 1, characterized in that, A servo motor (9) is fixedly installed on one side of the guide seat (11). The output end of the servo motor (9) is connected to the support caster (5) through the guide seat (11) via a coupling. A fixing plate (13) is fixedly connected to the top of the damper. A return spring (12) is sleeved on the outer periphery of the upper end of the damper. The two ends of the return spring (12) are fixedly connected to the top of the guide seat (11) and the bottom of the fixing plate (13) respectively.

3. The stable frame structure for stacker vehicles according to claim 2, characterized in that, Rubber buffer posts (14) are provided on both sides of the guide seat (11), and the two ends of the rubber buffer posts (14) are respectively fixedly connected to the top of the base frame (1) and the bottom of the fixing plate (13).

4. The stable frame structure for stacker vehicles according to claim 1, characterized in that, The two outer walls of the column gantry (2) are fixedly connected with guide rails (15), and the guide rails (15) are slidably connected with fork carriages (16). Two fork rods (17) are bolted to one side of the fork carriages (16).

5. The stable frame structure for stacker trucks according to claim 1, characterized in that, A geared motor (18) is fixedly installed below the column mast (2). The output end of the geared motor (18) is connected to a threaded rod (19) via a coupling. A threaded block (20) is threadedly connected to the outer circumference of the threaded rod (19), and the threaded block (20) is fixedly connected to the fork carriage (16).

6. The stable frame structure for stacker vehicles according to claim 5, characterized in that, The lower end of the threaded rod (19) is fixedly connected to a worm gear (21), and the outer periphery of the worm gear (21) is connected to a worm (22). One end of the worm (22) passes through the mounting bracket (4) and is fixedly connected to a handwheel (23).

7. The stable frame structure for stacker vehicles according to claim 1, characterized in that, The mounting bracket (4) is connected to a door (24) by a hinge on one side. A battery (25) is fixedly installed on the top of the protective shell (8). The battery (25) is electrically connected to the servo motor (9) and the geared motor (18). Several counterweights (26) are movably connected to one side of the interior of the mounting bracket (4). A protective plate (27) is fixedly connected to the top of the mounting bracket (4).

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