Forklift truck full-free portal frame with truck legs under working condition of stacking ultra-wide cargoes and forklift truck

Abstract

The utility model discloses a forklift full-free portal frame with legs under the working condition of stacking ultra-wide goods and a forklift, the full-free portal frame comprises a portal frame assembly, the portal frame assembly comprises a widened fork arm carrier, an inner portal frame and an outer portal frame, and the inner portal frame is matched in the outer portal frame; a fork is arranged on the side, away from the inner portal frame, of the widened fork arm carrier, a first hanging chain plate and a stand column plate are arranged on the widened fork arm carrier, a second hanging chain plate and a lower cross beam are arranged on the inner portal frame, a chain is connected between the first hanging chain plate and the second hanging chain plate, a front lifting oil cylinder is arranged on the lower cross beam, and a rear lifting oil cylinder is arranged on the stand column plate. The lifting device is used for driving the widened fork arm carrier piece to lift relative to the inner portal. According to the utility model, the taking of ultra-wide goods is realized, and the interference between the fork arm carrier and the fork legs is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of forklifts, in particular to a fully free mast with vehicle legs for stacking ultra-wide goods and a forklift. Background Art

[0002] For forklifts with legs, such as reach trucks equipped with three-stage fully free masts, some working conditions require larger fork clearances, which fit within the inner and outer widths of the fork legs. Using standard mast methods to handle this situation requires special handling of the cylinder, chain, and hose to ensure the fork frame is properly positioned. Furthermore, on some models, the chain is positioned high on the fork frame, so shortening the chain to limit the position often results in errors. Therefore, it is urgent to develop a new fully free mast to ensure stable fork shoveling and forking when stacking extra-wide cargo. Utility Model Content

[0003] Based on the technical problems existing in the background technology, the utility model proposes a fully free gantry with forklift legs and a forklift under the working condition of stacking extra-wide goods, which realizes the picking up of extra-wide goods and avoids interference between the fork frame and fork legs.

[0004] The utility model proposes a fully free gantry with a forklift with legs in the working condition of stacking extra-wide goods, including a gantry assembly, wherein the gantry assembly includes a widened fork frame, an inner gantry and an outer gantry, and the inner gantry is fitted in the outer gantry; a cargo fork is provided on the side of the widened fork frame away from the inner gantry, a first hanging chain plate and a column plate are provided on the widened fork frame, a second hanging chain plate and a lower crossbeam are provided on the inner gantry, a chain is connected between the first hanging chain plate and the second hanging chain plate, and a front lifting cylinder is provided on the lower crossbeam for driving the widened fork frame to lift relative to the inner gantry.

[0005] Preferably, a cylinder base is provided on the lower cross beam, the cylinder base is fixedly connected to the bottom of the front lifting cylinder, the middle part of the front lifting cylinder is connected to the second chain plate through a cylinder fixing buckle, a sprocket seat is fixed on the top of the front lifting cylinder, a sprocket is provided in the sprocket seat through a clamping plate, the sprocket is rotatably connected to the sprocket seat, and the chain is transmission-connected to the sprocket.

[0006] Preferably, when stacking extra-wide cargo:

[0007] The installation distance of the front lifting cylinder is L = L1 + (X + X0) / 2;

[0008] The stroke of the front lifting cylinder S = S1-(X+X0) / 2;

[0009] The length of the chain and the length of the hose connected to the front lifting cylinder 23 remain unchanged;

[0010] Where: L1 is the installation distance of the front lift cylinder under normal operating conditions; S1 is the stroke of the front lift cylinder under normal operating conditions; X is the maximum height between the ground and the fender above the tire; X0 is the effective safety distance.

[0011] The forklift provided by the utility model comprises the above-mentioned fully free mast of the forklift with vehicle legs under the working condition of stacking extra-wide goods.

[0012] Preferably, it also includes a vehicle frame, a front and rear moving support trolley, a front and rear moving oil cylinder and a cover plate, and the front and rear moving support trolley rolls on the inner end surface of the front and rear moving channel steel on the vehicle frame through the front and rear moving oil cylinder.

[0013] Preferably, the forward and backward moving support trolley includes a forward and backward moving support trolley vertical plate and a forward and backward moving support trolley, the gantry assembly is fixed on the forward and backward moving support trolley vertical plate, and the forward and backward moving oil cylinder is fixed on the forward and backward moving support trolley.

[0014] Beneficial technical effects of the utility model:

[0015] The utility model only needs to improve the oil cylinder and the fork frame on the original structure to realize the picking up of extra-wide goods, effectively avoids the interference between the widened fork frame and the fork legs, does not need to develop a new door frame, has strong versatility, and is also suitable for counterbalanced weight vehicles under special working conditions that require a limited widened fork frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a right side view of the forklift proposed by the utility model;

[0017] Figure 2 This is a front view of the forklift proposed by the utility model;

[0018] Figure 3 This is a front view of the mast assembly proposed in the present utility model;

[0019] Figure 4 This is a top view of the mast assembly proposed in the present utility model;

[0020] Figure 5 A is a partial rear view of the mast assembly proposed in the present invention;

[0021] Figure 6 This is a partial rear view B of the mast assembly proposed in the present invention.

[0022] In the figure: 1-frame, 11-front and rear moving channel steel, 2-gantry assembly, 21-widened fork frame, 211-first hanging chain plate, 212-column plate, 22-fork, 23-front lifting cylinder, 24-inner gantry, 241-second hanging chain plate, 242-lower crossbeam, 2421-cylinder base, 25-sprocket seat, 26-card plate, 27-chain, 28-cylinder fixing buckle, 29-sprocket, 210-outer gantry, 3-front and rear moving support trolley, 31-front and rear moving support trolley vertical plate, 32-front and rear moving support trolley forward moving support, 4-front and rear moving cylinder, 5-cover plate. DETAILED DESCRIPTION

[0023] The present invention will be further explained below in conjunction with specific embodiments.

[0024] Example 1

[0025] Reference Figure 2-6 The utility model proposes a fully free mast for a forklift with legs in the working condition of stacking extra-wide cargo, including a mast assembly 2, which includes a widened fork frame 21, an inner mast 24 and an outer mast 210, and the inner mast 24 is matched with the outer mast 210; a cargo fork 22 is provided on the side of the widened fork frame 21 away from the inner mast 24, and a first hanging chain plate 211 and a column plate 212 are provided on the widened fork frame 21, and the column plate 212 is riveted on both sides of the widened fork frame 21. The structural dimensions of the column plate 212 in the front and rear directions realize the stacking of extra-wide goods. A second chain plate 241 and a lower crossbeam 242 are provided on the inner mast 24. The second chain plate 241 is riveted to the middle part of the inner mast 24, and the lower crossbeam 242 is riveted to the lower end part of the inner mast 24. A chain 27 is connected between the first chain plate 211 and the second chain plate 241. A front lifting cylinder 23 is provided on the lower crossbeam 242, which is used to drive the widened fork frame to lift relative to the inner mast 24.

[0026] The lower crossbeam 242 is provided with a cylinder base 2421, and the cylinder base member 2421 is riveted to the front end face of the lower crossbeam member 242. The bottom of the front lifting cylinder 23 is fixed to the upper end face of the cylinder base 2421 by bolts. The middle part of the front lifting cylinder 23 is fixed to the front end face of the second hanging chain plate 241 by a cylinder fixing buckle 28. The inner circle end face of the cylinder fixing buckle 28 is tightly fitted with the outer circle of the front lifting cylinder member 23. The top of the front lifting cylinder 23 is fixed with a sprocket seat 25 by a clamp. The sprocket seat 25 is provided with a sprocket 2 9. The sprocket 29 is clamped on the outer circular end surface of the pin shaft through the circular end surface of the clamping plate 26, and the sprocket 29 is rotatably connected to the sprocket seat 25. The end joint of the chain condition 27 is passed through the inner circular surface of the hole on the second hanging chain plate 241 and is fixed to the lower end surface of the hanging chain plate 241 through a nut. The first hanging chain plate 211 is riveted to the rear frame assembly of the widened fork frame 21. The other end joint of the chain condition 27 is passed through the inner circular surface of the hole on the first hanging chain plate 211 and is fixed to the lower end surface of the first hanging chain plate 211 through a nut. The chain 27 is transmission-connected to the sprocket 29.

[0027] When stacking extra-wide cargo:

[0028] The installation distance L of the front lifting cylinder 23 is L1+(X+X0) / 2;

[0029] The stroke S of the front lifting cylinder 23 is S1-(X+X0) / 2;

[0030] The length of the chain and the length of the hose connected to the front lifting cylinder 23 remain unchanged;

[0031] Where: L1 is the installation distance of the front lift cylinder under normal operating conditions; S1 is the stroke of the front lift cylinder under normal operating conditions; X is the maximum height between the ground and the fender above the tire; X0 is the effective safety distance.

[0032] The utility model only needs to improve the oil cylinder and the fork frame on the original structure to realize the picking up of extra-wide goods, effectively avoids the interference between the widened fork frame and the fork legs, does not need to develop a new door frame, has strong versatility, and is also suitable for counterbalanced weight vehicles under special working conditions that require a limited widened fork frame.

[0033] Example 2

[0034] Reference Figure 1 The forklift proposed in the utility model includes the fully free gantry with legs forklift under the working condition of stacking extra-wide goods in Example 1; it also includes a frame 1, a front and rear moving support trolley 3, a front and rear moving cylinder 4 and a cover plate 5. The front and rear moving support trolley 3 rolls on the inner end surface of the front and rear moving channel steel 11 on the frame 1 through the front and rear moving cylinder 4.

[0035] In addition, the front and rear moving support trolley 3 includes a front and rear moving support trolley vertical plate 31 and a front and rear moving support 32 of the front and rear moving support trolley, the gantry assembly 2 is fixed on the front and rear moving support trolley vertical plate 31, and the front and rear moving cylinder 4 is fixed on the front and rear moving support trolley forward moving support 32.

Claims

1. The fully free mast with forklift legs for stacking extra-wide cargo is characterized by: The invention comprises a mast assembly (2), wherein the mast assembly (2) comprises a widened fork frame (21), an inner mast (24) and an outer mast (210), wherein the inner mast (24) is fitted in the outer mast (210); a fork (22) is provided on a side of the widened fork frame (21) away from the inner mast (24); a first hanging chain plate (211) and a column plate (212) are provided on the widened fork frame (21); a second hanging chain plate (241) and a lower crossbeam (242) are provided on the inner mast (24); a chain (27) is connected between the first hanging chain plate (211) and the second hanging chain plate (241); a front lifting oil cylinder (23) is provided on the lower crossbeam (242) for driving the widened fork frame to lift relative to the inner mast (24).

2. The fully free mast for forklift with legs for stacking extra-wide cargo according to claim 1 is characterized in that: A cylinder base (2421) is provided on the lower cross beam (242), and the cylinder base (2421) is fixedly connected to the bottom of the front lifting cylinder (23). The middle of the front lifting cylinder (23) is connected to the second chain plate (241) through a cylinder fixing buckle (28). A sprocket seat (25) is fixed to the top of the front lifting cylinder (23), and a sprocket (29) is provided in the sprocket seat (25) through a clamping plate (26). The sprocket (29) is rotatably connected to the sprocket seat (25), and the chain (27) is transmission-connected to the sprocket (29).

3. The fully free mast for forklift with legs for stacking extra-wide cargo according to claim 1 is characterized in that: When stacking extra-wide cargo: The installation distance L of the front lifting cylinder (23) is L1+(X+X0) / 2; The stroke S of the front lifting cylinder (23) is S1-(X+X0) / 2; The length of the chain and the length of the hose connected to the front lifting cylinder (23) remain unchanged; Where: L1 is the installation distance of the front lift cylinder under normal operating conditions; S1 is the stroke of the front lift cylinder under normal operating conditions; X is the maximum height between the ground and the fender above the tire; X0 is the effective safety distance.

4. A forklift, characterized in that: The invention comprises a fully free gantry with legs for a forklift truck in a working condition of stacking extra-wide goods as described in any one of claims 1 to 3.

5. The forklift according to claim 4, characterized in that It also includes a vehicle frame (1), a front and rear moving support trolley (3), a front and rear moving oil cylinder (4) and a cover plate (5), wherein the front and rear moving support trolley (3) rolls on the inner end surface of the front and rear moving channel steel (11) on the vehicle frame (1) through the front and rear moving oil cylinder (4).

6. The forklift according to claim 5, characterized in that The front-rear moving support trolley (3) comprises a front-rear moving support trolley vertical plate (31) and a front-rear moving support trolley forward moving support (32); the door frame assembly (2) is fixed on the front-rear moving support trolley vertical plate (31); and the front-rear moving oil cylinder (4) is fixed on the front-rear moving support trolley forward moving support (32).

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