Standard mast of forklift with legs under working condition of stacking ultra-wide cargoes and forklift

Abstract

The forklift standard portal frame with the legs under the working condition of stacking the ultra-wide goods comprises a portal frame assembly, the portal frame assembly comprises an outer portal frame, an inner portal frame and a fork arm carrier, displacement of the fork arm carrier is achieved through transmission of a right chain and a left chain, one end of the fork arm carrier is provided with a left fork and a right fork, and the other end of the fork arm carrier is provided with a left fork and a right fork. An oil cylinder is arranged between the outer door frame and the inner door frame, one end of the oil cylinder is connected with a rubber pipe, the rubber pipe is in transmission connection with a pulley on the outer door frame, and one end of the rubber pipe is fixedly connected with a straight-through partition plate connector on the outer door frame; the outer door frame comprises an outer door frame chain hanging plate and an outer door frame lower cross beam, the straight-through partition plate connector, the right chain and the left chain are all fixedly connected with the outer door frame chain hanging plate, and the lower end of the oil cylinder is fixedly connected with the outer door frame lower cross beam; the inner door frame comprises an inner door frame upper cross beam assembly, and the upper end of the oil cylinder is fixedly connected with the inner door frame upper cross beam assembly. 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 standard mast of a forklift with vehicle legs under the working condition of stacking extra-wide goods and a forklift. Background Art

[0002] For forklifts with fork legs, such as reach forklifts equipped with two-stage masts, some working conditions have relatively large cargo and require a larger fork outer clearance. Since the forks are hung on the fork frame, the outer width of the fork frame increases proportionally, and eventually the widened fork frame exceeds the inner width of the vehicle legs. When the fork frame falls to its original position, the fork frame will interfere with the fork legs. At the same time, the outer clearance of the fork is just within the inner and outer width range of the fork legs, causing the forks to interfere with the fork legs. In order to meet this special working condition, an extra-wide cargo picking standard mast is proposed to ensure that the forks are stable when they touch the ground to shovel and pick up cargo. Utility Model Content

[0003] Based on the technical problems existing in the background technology, the utility model proposes a standard mast and forklift with fork legs 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 standard mast for a forklift with legs under the working condition of stacking extra-wide cargo, including a mast assembly, wherein the mast assembly includes an outer mast, an inner mast and a fork frame, wherein the fork frame realizes the displacement of the fork frame through the transmission of a right chain and a left chain, a left fork and a right fork are provided at one end of the fork frame, an oil cylinder is provided between the outer mast and the inner mast, one end of the oil cylinder is connected to a hose, the hose is connected to the pulley on the outer mast for transmission, and one end of the hose is fixedly connected to the straight-through partition joint on the outer mast.

[0005] Preferably, the outer mast includes an outer mast chain plate and an outer mast lower crossbeam, the straight-through partition joint, the right chain and the left chain are all fixedly connected to the outer mast chain plate, and the lower end of the oil cylinder is fixedly connected to the outer mast lower crossbeam.

[0006] Preferably, the inner mast includes an inner mast upper crossbeam assembly, and the upper end of the oil cylinder is fixedly connected to the inner mast upper crossbeam assembly.

[0007] Preferably, the fork frame includes a fork frame column plate, a left fork frame chain plate and a right fork frame chain plate, the right chain is fixedly connected to the right fork frame chain plate, and the left chain is fixedly connected to the left fork frame chain plate.

[0008] Preferably, the left fork and the right fork are fixedly connected to the fork frame via positioning pins.

[0009] Preferably, the pulley is mounted on the support plate of the inner mast via a hose pulley bracket.

[0010] Preferably, when stacking extra-wide cargo:

[0011] The installation distance of the oil cylinder remains unchanged, and the stroke of the oil cylinder S2 = S1-X-X0;

[0012] The length of the hose L2 = L1-X-X0;

[0013] The length of the right chain / left chain L4 = L3-X+X0 / m;

[0014] Where: S1 is the stroke of the cylinder under normal working conditions; X is the maximum height between the ground and the fender above the tire; X0 is the effective safety distance; L1 is the length of the hose under normal working conditions; L3 is the length of the right chain / left chain under normal working conditions; m is the pitch of the right chain / left chain.

[0015] The forklift provided by the utility model comprises the above-mentioned standard mast of the forklift with legs under the working condition of stacking extra-wide goods.

[0016] 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.

[0017] 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 of the trolley, the gantry assembly is fixed on the forward and backward moving support trolley vertical plate through a support shaft, the cover plate is fixed to the support shaft through bolts, and the forward and backward moving cylinder is fixed on the forward and backward moving support of the trolley.

[0018] Beneficial technical effects of the utility model:

[0019] The utility model only needs to improve the oil cylinder, fork frame, chain and hose on the original structure, so as to realize the picking up of extra-wide goods and avoid the interference between the fork frame and the fork legs. There is no need to redevelop a door frame. The utility model has strong versatility and is also applicable to counterbalanced weight vehicles under special working conditions that require a limited and widened fork frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a right side view of the forklift proposed by the utility model;

[0021] Figure 2 This is a front view of the forklift proposed by the utility model;

[0022] Figure 3 This is a front view of the mast assembly proposed in the present utility model;

[0023] Figure 4 This is a top view of the mast assembly proposed in the present utility model;

[0024] Figure 5 A is a partial rear view of the mast assembly proposed in the present invention;

[0025] Figure 6 This is a partial rear view B of the mast assembly proposed in the present invention.

[0026] In the figure: 1-frame, 11-forward and backward moving channel steel, 12-oil cylinder, 2-gantry assembly, 21-left fork, 22-outer gantry, 221-support shaft, 222-outer gantry hanging chain plate, 223-outer gantry lower beam, 23-inner gantry, 231-support plate, 232-inner gantry upper beam assembly, 24-right chain, 25-hose, 26-fork frame, 261-fork frame column plate, 262-fork frame left hanging chain plate, 263-fork frame right hanging chain plate, 27-right fork, 28-left chain, 29-pulley, 210-hose pulley bracket, 211-straight-through partition joint, 3-forward and backward moving support trolley, 31-forward and backward moving support trolley vertical plate, 32-forward and backward moving support trolley forward moving support, 4-forward and backward moving oil cylinder, 5-cover plate. DETAILED DESCRIPTION

[0027] The present invention will be further explained below in conjunction with specific embodiments.

[0028] Example 1

[0029] Reference Figure 2-6 The standard mast of a forklift with legs for stacking extra-wide cargo proposed in the present invention includes a mast assembly 2, which includes an outer mast 22, an inner mast 23 and a fork frame 26. The fork frame 26 is displaced by the transmission of a right chain 24 and a left chain 28. A left fork 21 and a right fork 27 are provided at one end of the fork frame 26. A cylinder 12 is provided between the outer mast 22 and the inner mast 23. A hose 25 is connected to one end of the cylinder 12. The hose 25 is connected to a pulley 29 on the outer mast 22 for transmission, and one end of the hose 25 is fixedly connected to a straight-through partition joint 211 on the outer mast 22.

[0030] As a preferred embodiment of the present invention, refer to Figure 5 and Figure 6 The outer door frame 22 includes an outer door frame chain plate 222 and an outer door frame lower beam 223. The straight-through partition joint 211, the right chain 24 and the left chain 28 are all fixedly connected to the outer door frame chain plate 222, and the lower end of the cylinder 12 is fixedly connected to the outer door frame lower beam 223.

[0031] As a preferred embodiment of the present invention, refer to Figure 5 The inner door frame 23 includes an inner door frame upper beam assembly 232, and the upper end of the oil cylinder 12 is fixedly connected to the inner door frame upper beam assembly 232.

[0032] As a preferred embodiment of the present invention, refer to Figure 4 The fork frame 26 includes a fork frame column plate 261, a left fork frame chain plate 262 and a right fork frame chain plate 263. The right chain 24 is fixedly connected to the right fork frame chain plate 263, and the left chain 28 is fixedly connected to the left fork frame chain plate 262.

[0033] In addition, the left fork 21 and the right fork 27 are fixedly connected to the fork frame 26 through positioning pins; the pulley 29 is installed on the support plate 231 of the inner mast 23 through the hose pulley bracket 210.

[0034] When stacking extra-wide cargo:

[0035] The installation distance of the oil cylinder 12 remains unchanged, and the stroke of the oil cylinder 12 is S2 = S1-X-X0;

[0036] The length of the hose 25 is L2 = L1 - X - X0;

[0037] The length of the right chain 24 / left chain 28 is L4=L3-X+X0 / m;

[0038] Where: S1 is the stroke of the cylinder under normal working conditions; X is the maximum height between the ground and the fender above the tire; X0 is the effective safety distance; L1 is the length of the hose under normal working conditions; L3 is the length of the right chain / left chain under normal working conditions; m is the pitch of the right chain / left chain.

[0039] The utility model only needs to improve the oil cylinder, fork frame, chain and hose on the original structure, so as to realize the picking up of extra-wide goods and avoid the interference between the fork frame and the fork legs. There is no need to redevelop a door frame. The utility model has strong versatility and is also applicable to counterbalanced weight vehicles under special working conditions that require a limited and widened fork frame.

[0040] Example 2

[0041] Reference Figure 1 and Figure 4 The forklift proposed in the present invention includes the standard mast of the forklift with legs under the working condition of stacking extra-wide cargo in Example 1.

[0042] In addition, the forklift also includes a frame 1, a front and rear moving support trolley 3, a front and rear moving oil 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 oil cylinder 4.

[0043] Among them, 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 door frame assembly 2 is fixed on the front and rear moving support trolley vertical plate 31 through the support shaft 221, the cover plate 5 is fixed to the support shaft 221 by bolts, and the front and rear moving cylinder 4 is fixed on the front and rear moving support trolley forward moving support 32.

Claims

1. Standard mast for forklift with legs for stacking extra-wide cargo, characterized by: The invention comprises a mast assembly (2), wherein the mast assembly (2) comprises an outer mast (22), an inner mast (23) and a fork frame (26), wherein the fork frame (26) is displaced by the transmission of a right chain (24) and a left chain (28), wherein a left fork (21) and a right fork (27) are provided at one end of the fork frame (26), an oil cylinder (12) is provided between the outer mast (22) and the inner mast (23), wherein one end of the oil cylinder (12) is connected to a hose (25), wherein the hose (25) is transmission-connected to a pulley (29) on the outer mast (22), and one end of the hose (25) is fixedly connected to a straight-through partition joint (211) on the outer mast (22).

2. The standard mast for a forklift with legs for stacking extra-wide cargo according to claim 1 is characterized in that: The outer door frame (22) comprises an outer door frame chain plate (222) and an outer door frame lower cross beam (223); the straight-through partition joint (211), the right chain (24) and the left chain (28) are all fixedly connected to the outer door frame chain plate (222); and the lower end of the oil cylinder (12) is fixedly connected to the outer door frame lower cross beam (223).

3. The standard mast for a forklift with legs for stacking extra-wide cargo according to claim 1 is characterized in that: The inner door frame (23) comprises an inner door frame upper crossbeam assembly (232), and the upper end of the oil cylinder (12) is fixedly connected to the inner door frame upper crossbeam assembly (232).

4. The standard mast for a forklift with legs for stacking extra-wide cargo according to claim 1 is characterized in that: The fork frame (26) comprises a fork frame column plate (261), a left fork frame hanging chain plate (262) and a right fork frame hanging chain plate (263); the right chain (24) is fixedly connected to the right fork frame hanging chain plate (263); and the left chain (28) is fixedly connected to the left fork frame hanging chain plate (262).

5. The standard mast for a forklift with legs for stacking extra-wide cargo according to claim 1 is characterized in that: The left fork (21) and the right fork (27) are both fixedly connected to the fork frame (26) via positioning pins.

6. The standard mast for a forklift with legs for stacking extra-wide cargo according to claim 1 is characterized in that: The pulley (29) is mounted on the support plate (231) of the inner door frame (23) via a hose pulley bracket (210).

7. The standard mast for a forklift with legs for stacking extra-wide cargo according to claim 1 is characterized in that: When stacking extra-wide cargo: The installation distance of the oil cylinder (12) remains unchanged, and the stroke of the oil cylinder (12) S2 = S1-X-X0; The length of the hose (25) L2 = L1 - X - X0; The length of the right chain (24) / left chain (28) is L4=L3-(X+X0) / m; Where: S1 is the stroke of the cylinder under normal working conditions; X is the maximum height between the ground and the fender above the tire; X0 is the effective safety distance; L1 is the length of the hose under normal working conditions; L3 is the length of the right chain / left chain under normal working conditions; m is the pitch of the right chain / left chain.

8. A forklift, characterized in that: The invention comprises a standard mast of a forklift with legs for stacking extra-wide cargo as described in any one of claims 1 to 7.

9. The forklift according to claim 8, 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).

10. The forklift according to claim 9, 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 support (32); the door frame assembly (2) is fixed to the front-rear moving support trolley vertical plate (31) via a support shaft (221); the cover plate (5) is fixed to the support shaft (221) via bolts; and the front-rear moving oil cylinder (4) is fixed to the front-rear moving support trolley forward support (32).

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