CN216613920U - Forklift portal frame and forklift - Google Patents
Forklift portal frame and forklift Download PDFInfo
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- CN216613920U CN216613920U CN202122603930.4U CN202122603930U CN216613920U CN 216613920 U CN216613920 U CN 216613920U CN 202122603930 U CN202122603930 U CN 202122603930U CN 216613920 U CN216613920 U CN 216613920U
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- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000003466 welding Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of operation machinery, and aims to provide a forklift gantry and a forklift. The forklift mast comprises an outer mast, an inner mast, a fork frame and a lifting control mechanism, wherein the lifting control mechanism is symmetrically arranged on the outer sides of two sides of the inner mast, the lifting control mechanism can drive the inner mast and the fork frame to lift relative to the outer mast, the lifting control mechanism comprises a driving piece and a chain component, and the chain component and the driving piece are arranged in a staggered manner. The utility model solves the problems that the chain of the existing forklift gantry easily impacts an oil cylinder, so that the oil cylinder is damaged, and the normal use of a forklift is further influenced.
Description
Technical Field
The utility model relates to the technical field of operation machinery, in particular to a forklift gantry and a forklift.
Background
Fork truck is an industrial handling vehicle for handling, stacking and short-distance transport of piece pallet goods. The forklift mast (also called mast) is the main bearing structure of the forklift, and mainly comprises an inner mast, an outer mast, a fork frame, a fork, a chain wheel, a chain, a lifting oil cylinder and the like.
The existing forklift gantry comprises an outer gantry and an inner gantry which are nested in a sliding mode, the fork frame is connected to the inner gantry in a sliding mode, connecting pieces are arranged on two sides of the inner gantry connected with the fork frame, the connecting pieces extend to two sides of the outer gantry and do not interfere with the outer gantry, free oil cylinders are fixed on the connecting pieces, chain wheel supports are fixed on piston rods of the free oil cylinders, fork chain wheels are connected to the chain wheel supports in a rotating mode, chains are arranged on the fork chain wheels, two ends of each chain are fixed to the connecting pieces and the fork frame respectively, and driving assemblies used for driving the inner gantry to lift are arranged on the outer gantry. The free oil cylinder of the forklift gantry is arranged on the outer side of the gantry, the chain is arranged in a crossing manner from the upper end of the free oil cylinder, and under some special working conditions, when the chain is changed from a tensioning state to a loosening state or from the loosening state to the tensioning state, the swinging process of the chain can impact the piston rod and the cylinder barrel of the free oil cylinder, so that the oil cylinder is easily damaged, and the normal use of the forklift is influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the utility model is to overcome the defect that the chain of the forklift mast in the prior art is easy to impact the oil cylinder, so that the oil cylinder is damaged, and the normal use of the forklift is further influenced, so that the forklift mast and the forklift are provided, wherein the chain cannot swing to contact the oil cylinder, the service life of the oil cylinder is ensured, and the forklift can normally operate.
In order to solve the above problems, the present invention provides a forklift mast, which comprises an outer mast, an inner mast, a fork carriage and a lift control mechanism, wherein the lift control mechanism is symmetrically arranged at the outer sides of two sides of the inner mast, the lift control mechanism can drive the inner mast and the fork carriage to lift relative to the outer mast, the lift control mechanism comprises a driving member and a chain assembly, and the chain assembly and the driving member are arranged in a staggered manner.
Optionally, the chain assembly comprises a chain, the chain being located outside the drive member.
Optionally, the chain assembly further comprises the chain wheel shaft, the axial direction of the chain wheel shaft is parallel to the axial direction of the upper cross beam of the inner door frame, and the axial direction of the driving piece is perpendicular to the axial direction of the upper cross beam (202).
Optionally, the outer sides of the two sides of the inner door frame are provided with side plates, the side plates are perpendicular to the axial direction of the upper cross beam, and the sprocket shaft is arranged on the side plates and is perpendicular to the plane where the side plates are located.
Optionally, the upper end of the driving part is fixedly connected with the lower surface of the side plate, and the lower end of the driving part is fixedly connected with the outer door frame.
Optionally, the driving piece is an oil cylinder, the upper end of the oil cylinder is fixedly connected with the lower surface of the side plate through an upper oil cylinder ejecting block, and the lower end of the oil cylinder is fixedly connected with the outer gantry through a lower oil cylinder ejecting block.
Optionally, a chain wheel is arranged on the chain wheel shaft, the chain is arranged on the chain wheel, the upper end of the chain is fixedly connected with the outer gantry, and the lower end of the chain is fixedly connected with the fork frame.
Optionally, the upper end of the chain is fixedly connected with the outer gantry through a chain upper seat block, and the lower end of the chain is fixedly connected with the fork frame through a chain lower seat block.
Optionally, the side plate is disposed on an end surface of the upper cross beam.
A forklift comprises the forklift mast.
The utility model has the following advantages:
(1) according to the forklift gantry provided by the utility model, the chain assembly of the lifting control mechanism and the driving part are arranged in a staggered manner and do not interfere with each other, and under different working conditions, when the chain is changed from a tensioning state to a loosening state or from the loosening state to the tensioning state, the swinging process of the chain cannot impact the driving part, the driving part cannot be damaged, the service life of the driving part is ensured, and the normal use of a forklift can be ensured.
(2) According to the forklift mast provided by the utility model, the chain is positioned at the outer side of the driving part, the chain and the driving part are arranged in a staggered manner, interference between the chain and the driving part is avoided, the chain cannot swing to collide with the driving part, the driving part is protected from being damaged, the arrangement mode is convenient for structural arrangement, and the structure is optimized and reasonable.
(3) According to the forklift mast provided by the utility model, the upper end of the oil cylinder (namely the upper end of the piston rod) is connected with the lower surface of the side plate through the oil cylinder upper jacking block, when the oil cylinder works, the piston rod of the oil cylinder jacks up the inner mast, the welding seam between the oil cylinder upper jacking block and the lower surface of the side plate is only under the action of the extrusion force between the oil cylinder upper jacking block and the side plate, and the direction of the force is vertical, so that the welding process requirement at the position is greatly reduced, and the assembly difficulty is reduced.
(4) The forklift provided by the utility model is provided with the forklift gantry, wherein the chain assembly and the driving piece are arranged in a staggered manner and do not interfere with each other, the driving piece cannot be damaged by the swinging of the chain, the service life of the driving piece can be ensured, and the normal operation of the forklift is not influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Figure 1 shows an overall schematic view of the forklift mast of the utility model;
FIG. 2 shows an exploded view of the forklift mast of the present invention;
FIG. 3 is a schematic view of the outer mast of the forklift mast of the present invention;
FIG. 4 shows a schematic view of an inner mast of the forklift mast of the utility model;
figure 5 shows a schematic view of the fork carriage of the forklift mast of the utility model.
Description of reference numerals:
1-outer gantry, 101-oil cylinder lower jacking block, 102-chain upper seat block and 103-outer gantry upright post;
2-an inner gantry, 201-a side plate, 202-an upper beam, 203-an oil cylinder upper top block and 204-an inner gantry upright post;
3-fork carriage, 301-chain lower seat block;
401-chain, 402-sprocket shaft, 403-sprocket;
and 5, oil cylinder.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 and 2, it is a preferred embodiment of the forklift mast of the present invention.
The forklift mast comprises an outer mast 1, an inner mast 2, a fork carriage 3 and a lifting control mechanism. Wherein, outer portal 1, interior portal 2 and the mutual nested connection of fork frame 3, its concrete connection mode is the same with current fork truck portal, and this fork truck portal still has other structures that current fork truck portal possessed in addition, and owing to this application content does not relate to the event and does not give unnecessary details.
The lifting control mechanisms are symmetrically arranged on the outer sides of the two sides of the inner gantry 2, namely, the lifting control mechanisms are provided with a left lifting control mechanism and a right lifting control mechanism, and the two lifting control mechanisms are symmetrically arranged relative to the vertical central line of the inner gantry 2. The lifting control mechanism is used for driving the inner gantry 2 and the fork arm carrier 3 to move up and down relative to the outer gantry 1.
The lifting control mechanism comprises a driving piece and a chain assembly, wherein the chain assembly and the driving piece are arranged in a staggered mode, namely, in the direction perpendicular to the plane of the outer door frame 1 and the plane of the outer door frame 2, the chain assembly and the driving piece are not overlapped and do not interfere with each other, namely, under any working condition, the chain assembly is not in contact with the driving piece. Wherein, the chain assembly comprises a chain 401, a sprocket shaft 402 and a sprocket 403, the sprocket 403 is arranged on the sprocket shaft 402, the outer teeth of the sprocket 403 can rotate relative to the sprocket shaft 402, and the chain 401 is meshed with the outer teeth of the sprocket 403. In the planar direction of perpendicular to outer portal 1, outer portal 2 place, chain 401 is located the outside of driving piece, and chain 401 and driving piece do not coincide, complementary interference, and chain 401 staggers with the position that sets up of driving piece, avoids the chain swing striking to lead to the condition of driving piece damage to take place. In the present embodiment, the driving member employs the oil cylinder 5, and the oil cylinder 5 has a cylinder body and a piston rod disposed in the cylinder body.
As shown in fig. 3, the outer gantry 1 has two outer gantry columns 103 which are bilaterally symmetrical, a chain upper seat block 102 is provided at an upper portion of the outer gantry column 103 for connecting an upper end of a chain 401, and a cylinder lower top block 101 is provided at a lower portion of the outer gantry column 103 for connecting a lower end of a cylinder 5.
As shown in fig. 4, the inner gantry 2 has two inner gantry columns 204 which are bilaterally symmetrical, an upper beam 202 is disposed on the upper portions of the two inner gantry columns 204, the upper beam 202 is horizontally disposed, and both ends of the upper beam 202 are respectively connected to the two inner gantry columns 204. The axial direction of the sprocket shaft 402 is parallel to the axial direction of the upper cross member 202, and the axial direction of the oil cylinder 5 is perpendicular to the axial direction of the upper cross member 202. The chain 401 located outside the driving element is specifically: the chain 401 is farther from the center line of the upper cross member 202 than the cylinder 5 is from the center line of the upper cross member 202 when viewed in the plane of the upper cross member 202.
As shown in fig. 5, the fork carriage 3 is also of a bilaterally symmetrical structure, and has a chain lower block 301 at an upper portion thereof for coupling with a lower end of a chain 401.
In the embodiment, the outer sides of both sides of the inner gantry 2 are provided with side plates 201, the side plates 201 are perpendicular to the axial direction of the upper cross beam 202, and the sprocket shaft 402 is arranged on the side plates 201 and is perpendicular to the plane of the side plates 201. In order to make the structure of the inner gantry upper beam more compact, the side plate 201 is arranged on the end face of the upper beam 202. The side plate 201 has a certain thickness, the upper end of the driving member is fixedly connected with the lower surface of the side plate 201, the lower surface of the side plate 201 is a horizontal plane, the driving member is located under the side plate 201, the lower end of the driving member is fixedly connected with the outer gantry 1, namely, the upper end surface of a piston rod of the oil cylinder 5 is fixedly connected with the lower surface of the side plate 201, and the lower end surface of a cylinder body of the oil cylinder 5 is fixedly connected with the outer gantry 1. Specifically, the lower surface of the side plate 201 is provided with an upper oil cylinder jacking block 203, the upper oil cylinder jacking block 203 is welded under the side plate 201 and is used for connecting the upper end of the driving piece, namely, the upper end (the upper end surface of the piston rod) of the oil cylinder 5 and the upper oil cylinder jacking block 203 are fixedly connected, so that the fixed connection with the lower surface of the side plate 201 is realized, the lower end of the oil cylinder 5 and the lower oil cylinder jacking block 101 are fixedly connected, and further, the fixed connection with the outer gantry 1 is realized. Because the top block 203 on the oil cylinder is welded under the side plate 201, the welding seam between the top block 203 on the oil cylinder and the lower surface of the side plate 201 is only under the action of extrusion force between the top block and the lower surface of the side plate 201, the direction of the force is vertical, the requirement on the welding process is reduced, and the processing and the assembly are convenient.
The upper end of chain 401 is fixedly connected with outer gantry 1, and the lower end of chain 401 is fixedly connected with fork frame 3. Specifically, the upper end and the lower end of the chain 401 are both screws, the upper end of the chain 401 is fixedly connected with the outer gantry 1 through the chain upper seat block 102, and the lower end of the chain 401 is fixedly connected with the fork frame 3 through the chain lower seat block 301. The upper chain block 102 has nuts that mate with the upper end of the chain 401 to secure the upper end of the chain 401 to the upper chain block 102, and the lower chain block 301 has nuts that mate with the lower end of the chain 401 to secure the lower end of the chain 401 to the lower chain block 301.
The working process of the forklift mast of the embodiment is described as follows:
in the lifting process, a piston rod of the oil cylinder 5 extends upwards to lift the inner gantry 2 upwards, and the upper end of the chain 401 is fixed with the outer gantry 1, so that the lower end of the chain 401 is lifted upwards under the driving of the inner gantry 2, and the fork frame 3 is further driven to be lifted upwards;
during the descending process, a piston rod of the oil cylinder 5 retracts downwards, the inner gantry 2 moves downwards along with the piston rod, and the lower end of the chain 401 is lowered downwards under the driving of the inner gantry 2 due to the fact that the upper end of the chain 401 is fixed to the outer gantry 1, and then the fork frame 3 is driven to lower downwards.
The embodiment also provides the forklift, which comprises the forklift gantry disclosed by the utility model and other mechanisms of the existing forklift, and the utility model does not relate to the forklift, so that the description is omitted. The chain and the oil cylinder are arranged in a staggered mode, the chain cannot interfere with the oil cylinder, and under any working condition, when the chain is changed from a tensioning state to a loosening state or from the loosening state to the tensioning state, the oil cylinder cannot be impacted in the swinging process of the chain, so that the oil cylinder is protected, the service life of the forklift is guaranteed, and the normal use of the forklift is guaranteed.
In other embodiments, the side plate 201 may not be disposed on the end surface of the upper beam 202, such as below, and the object of the present invention can also be achieved.
In other embodiments, other hydraulic cylinders, air cylinders, etc. can be used as the driving member, and the purpose of the utility model can be achieved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (9)
1. A forklift mast, its characterized in that: the lifting control mechanism is symmetrically arranged on the outer sides of two sides of the inner gantry (2), can drive the inner gantry (2) and the fork carrier (3) to lift relative to the outer gantry (1), and comprises a driving piece and a chain assembly, wherein the chain assembly and the driving piece are arranged in a staggered mode;
the inner gantry (2) comprises an upper cross beam (202), side plates (201) are arranged on the outer sides of two sides of the inner gantry (2), and the side plates (201) are perpendicular to the axial direction of the upper cross beam (202);
the upper end of the driving piece is fixedly connected with the lower surface of the side plate (201), and the lower end of the driving piece is fixedly connected with the outer door frame (1).
2. The forklift mast of claim 1, wherein: the chain assembly comprises a chain (401), the chain (401) being located outside the drive element.
3. The forklift mast of claim 2, wherein: the chain assembly further comprises a chain wheel shaft (402), the axial direction of the chain wheel shaft (402) is parallel to the axial direction of the upper cross beam (202) of the inner gantry (2), and the axial direction of the driving piece is perpendicular to the axial direction of the upper cross beam (202).
4. The forklift mast of claim 3, wherein: the chain wheel shaft (402) is arranged on the side plate (201) and is perpendicular to the plane of the side plate (201).
5. The forklift mast of claim 3, wherein: the driving piece is an oil cylinder (5), the upper end of the oil cylinder (5) is fixedly connected with the lower surface of the side plate (201) through an upper oil cylinder ejecting block (203), and the lower end of the oil cylinder (5) is fixedly connected with the outer gantry (1) through an lower oil cylinder ejecting block (101).
6. The forklift mast of claim 5, wherein: the fork lifting mechanism is characterized in that a chain wheel (403) is arranged on the chain wheel shaft (402), the chain (401) is arranged on the chain wheel (403), the upper end of the chain (401) is fixedly connected with the outer gantry (1), and the lower end of the chain (401) is fixedly connected with the fork frame (3).
7. The forklift mast of claim 6, wherein: the upper end of the chain (401) is fixedly connected with the outer gantry (1) through an upper chain seat block (102), and the lower end of the chain (401) is fixedly connected with the fork frame (3) through a lower chain seat block (301).
8. The forklift mast as defined in any one of claims 1 to 7, wherein: the side plates (201) are arranged on the end face of the upper cross beam (202).
9. A forklift, characterized in that: comprising a forklift mast as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122603930.4U CN216613920U (en) | 2021-10-27 | 2021-10-27 | Forklift portal frame and forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122603930.4U CN216613920U (en) | 2021-10-27 | 2021-10-27 | Forklift portal frame and forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216613920U true CN216613920U (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122603930.4U Active CN216613920U (en) | 2021-10-27 | 2021-10-27 | Forklift portal frame and forklift |
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| Country | Link |
|---|---|
| CN (1) | CN216613920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115520811A (en) * | 2022-09-06 | 2022-12-27 | 劢微机器人科技(深圳)有限公司 | Double-fork forklift |
-
2021
- 2021-10-27 CN CN202122603930.4U patent/CN216613920U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115520811A (en) * | 2022-09-06 | 2022-12-27 | 劢微机器人科技(深圳)有限公司 | Double-fork forklift |
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