Front supporting type forklift with adjustable supporting legs

Abstract

The utility model discloses a front support type forklift with adjustable supporting legs, which comprises a portal frame, a lifting device arranged on the portal frame and a pallet fork linked and lifted through the lifting device, universal wheels arranged on the rear side of the portal frame, a pair of supporting legs arranged on two sides of the portal frame and extending forwards, directional wheels arranged at the end parts of the supporting legs, and a pair of supporting legs connected to two sides of the portal frame in a sliding manner, spreading and shrinking are achieved by transversely sliding relative to the portal frame and perpendicular to the portal frame and the supporting legs. According to the front supporting type forklift, the distance between the supporting legs on the two sides can be adjusted according to needs to achieve width expansion and width reduction, the limitation of the wheel diameter of the directional wheel and the height of the supporting legs is relieved, and the front supporting type forklift is suitable for various trays and has better practicability.

Description

Technical Field

[0001] The utility model relates to a front-supported forklift with adjustable supporting legs, belonging to the technical field of forklifts. Background Art

[0002] A front-lift forklift, also known as a stacker, is a type of industrial handling vehicle and warehouse forklift. This type of forklift is mainly used for loading and unloading, stacking and short-distance transportation of palletized goods. In existing front-lift forklifts, the door frame and the support legs are an integral whole, and universal wheels are provided on the rear side of the door frame. The support legs are fixed on both sides of the door frame and extend forward, and fixed wheels are provided on the ends of the support legs. Since the distance between the two support legs of this forklift is fixed, when transporting palletized goods, the support legs need to move in and out of the bottom of the pallet together with the forks. Due to the limited space height, the wheel diameter of the fixed wheel can only be very small, which makes the forklift inflexible in movement, especially when moving heavy loads, it is easy to get stuck on the ground, and has great limitations in use. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a front-supported forklift with adjustable supporting legs, the supporting legs of which can be adjusted in spacing according to needs to achieve expansion and contraction, and the supporting legs do not need to enter and exit the bottom of the cargo pallet during use, and can avoid obstacles, thereby removing the restrictions on the wheel diameter of the directional wheels and the height of the supporting legs, having better mobility and strength, and can solve the shortcomings of the prior art.

[0004] The technical solution of the utility model is: a front-supported forklift with adjustable supporting legs, comprising a gantry, a lifting device and a fork lifted and lowered by the lifting device are arranged on the gantry, a universal wheel is arranged on the rear side of the gantry, a pair of supporting legs are arranged on both sides of the gantry and extend forward, and directional wheels are arranged on the ends of the supporting legs, and the utility model is characterized in that: a pair of the supporting legs are slidably connected to the left and right sides of the gantry, and can achieve expansion and contraction by making a lateral sliding relative to the gantry perpendicular to the gantry and the supporting legs.

[0005] Furthermore, a matching limiting mechanism is provided between the supporting leg and the door frame, and the limiting mechanism cooperates with the supporting leg to limit the position, thereby ensuring the force strength of the sliding connection between the supporting leg and the door frame.

[0006] Furthermore, a matching positioning mechanism is provided between the supporting leg and the door frame, and the positioning mechanism fixes the supporting leg and the door frame after partial or full sliding relative to the door frame.

[0007] By implementing the utility model, the support legs on both sides of the door frame can slide relative to the door frame to achieve expansion when in use. The spacing between the support legs after expansion is greater than the width of the pallet. When shipping goods, the support legs are located on the outside of the pallet and do not need to enter and exit the bottom of the pallet. In this way, the outer diameter of the directional wheel is no longer limited by the height of the cargo pallet, and the wheel diameter can be increased to make the rotation more flexible and no longer stuck on the ground; it is not affected by the wheels or obstacles of the loading and unloading vehicles, and the loading and unloading position can be freely selected; the height of the support legs can be increased to improve its load-bearing performance; the cargo fork can easily enter the cargo pallet without being affected by the height of the pallet, and can be used in conjunction with any currently used pallet. It is easy to operate and has a large degree of freedom, which solves the common problems of front-support forklifts. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a rear side view of the utility model;

[0009] Figure 2 It is a front side view of the utility model.

[0010] As shown in the figure: mast 1; fork 2; universal wheel 3; support leg 4; fixed wheel 5; slide groove 6; sliding part 7; positioning hole 8; limit rope 9; positioning screw 10. DETAILED DESCRIPTION

[0011] Embodiments of the present utility model: Figure 1 to Figure 2As shown, a front-support forklift with adjustable supporting legs comprises a mast 1, a lifting device and a fork 2 which is lifted and lowered by the lifting device are arranged on the mast 1, a universal wheel 3 is arranged on the rear side of the mast 1, a pair of supporting legs 4 are arranged on both sides of the mast 1, and directional wheels 5 are arranged at the ends of the supporting legs 4. The technical innovation of the present application lies in that the pair of supporting legs 4 are slidably connected to both sides of the mast 1, specifically, a transverse slide groove 6 is arranged on the mast 1, and the tail of the supporting leg 4 is an L-shaped sliding connection portion 7, and the sliding connection portion 7 is inserted into the transversely distributed slide groove 6. The sliding connection 7 can be driven by a forward and reverse synchronous screw rod or a hydraulic connecting rod or manually to realize the support leg 4 to move in the opposite direction to both sides. After partial or full sliding, it will be fixed by a positioning screw 10. In order to reduce the manufacturing cost, this application recommends the use of manual adjustment. A matching positioning mechanism is provided between the sliding connection 7 of the support leg 4 and the door frame 1. Specifically, the sliding connection 7 is provided with a row of positioning holes 8 in the horizontal direction. The positioning screw 10 passes through the outer wall of the slide groove 6 and is connected with the positioning hole 8 to realize the positioning and fixing of the support leg 4. When in use, the door The support legs 4 on both sides of the frame 1 can slide relative to the door frame 1 to achieve expansion. The spacing between the support legs 4 after expansion is greater than the width of the pallet. For example, the width of the commonly used pallet is 1.1 meters. The spacing between the support legs 4 after expansion in the present application can reach more than 1.2 meters. When shipping goods, the support legs 4 are located outside the two sides of the pallet, and there is no need to enter and exit the bottom of the pallet. The fork 2 can also easily enter the cargo pallet without overlapping with the support legs 4, and can adapt to the height and width of various general pallets. At the same time, the outer diameter of the directional wheel 5 is no longer limited by the height of the cargo pallet. The directional wheel 5 of the traditional front-supported forklift is limited by the height of the pallet, and its wheel diameter is generally only 8 to 10 centimeters. The present application can increase the wheel diameter of the directional wheel 5 to more than twice the traditional wheel diameter, that is, it can reach 20 centimeters or more, which is the same as the universal wheel 3, making the rotation more flexible and no longer stuck on the ground; it is not affected by various factors such as the weight of the loaded and unloaded goods and the wheels of the truck or other obstacles, and can operate freely; at the same time, the height of the support legs 4 can also be increased to improve its loadability and safety.

[0012] To prevent the support leg 4 from exceeding the safe load-bearing arm length when sliding, a matching limiting mechanism is provided between the support leg 4 and the door frame 1, and the limiting mechanism includes a limiting cable 9 connecting the door frame 1 and the support leg 4. When the support leg 4 moves outward and expands until the limiting cable 9 is tightened, the support leg 4 cannot continue to move outward, thereby ensuring the connection strength between the support leg 4 and the door frame 1. Two or more upper and lower parallel slide grooves 6 can be provided on the door frame 1 to reduce the torque generated inside the slide groove 6 and reduce the inclination of the support leg 4 caused by the gap between the slide groove 6 and the support leg 4. Similarly, a corresponding number of matching sliding parts 7 can be added to improve the strength and reduce the influence of the torsional force inside the support leg 4.

Claims

1. A front-support forklift with adjustable support legs, comprising a mast, a lifting device and a fork that is lifted and lowered in linkage with the lifting device, a universal wheel at the rear of the mast, a pair of support legs at both sides of the mast and extending forward, and directional wheels at the ends of the support legs, characterized in that: A pair of support legs are slidably connected to the left and right sides of the door frame, and can be expanded and retracted by sliding horizontally relative to the door frame and perpendicular to the door frame and the support legs.

2. A front forklift with adjustable support legs according to claim 1, characterized in that: A matching limiting mechanism is provided between the supporting leg and the door frame, and the limiting mechanism cooperates with the supporting leg to limit the position, thereby ensuring the force strength of the sliding connection between the supporting leg and the door frame.

3. A front forklift with adjustable support legs according to claim 1 or 2, characterized in that: A matching positioning mechanism is provided between the supporting leg and the door frame, and the positioning mechanism fixes the supporting leg and the door frame after partial or full sliding relative to the door frame.

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