CN112777528A - Fork truck is hot rolling C shaped steel for portal - Google Patents
Fork truck is hot rolling C shaped steel for portal Download PDFInfo
- Publication number
- CN112777528A CN112777528A CN202110126827.7A CN202110126827A CN112777528A CN 112777528 A CN112777528 A CN 112777528A CN 202110126827 A CN202110126827 A CN 202110126827A CN 112777528 A CN112777528 A CN 112777528A
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- CN
- China
- Prior art keywords
- web
- shaped steel
- boss
- portal
- plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/08—Masts; Guides; Chains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/08—Masts; Guides; Chains
- B66F9/087—Monomasts
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to the technical field of machinery and material processing, in particular to hot-rolled C-shaped steel for a forklift gantry. Fork truck is hot rolling C shaped steel for portal includes: web, first pterygoid lamina and second pterygoid lamina, fork truck is hot rolling C shaped steel for portal still includes: a boss; the first wing plate and the second wing plate are positioned at two ends of the lower surface of the web plate and form a C-shaped structure with the web plate; the boss is located the junction of web lower surface and second alar plate left surface. The invention has wide operation visual field, light weight, good rigidity, low hot rolling difficulty and production cost.
Description
Technical Field
The invention relates to the technical field of machinery and material processing, in particular to hot-rolled C-shaped steel for a forklift gantry.
Background
The portal is a lifting mechanism of the forklift and serves as a core working device of the forklift, safety and operation convenience are key indexes for measuring the advancement of the portal mechanism, profile steel used for manufacturing the portal is used as a basic component, and the safety and operation convenience of the whole portal are determined by the external dimension and the section characteristics of the profile steel. In recent years, the lift height of a forklift increases significantly with changes in work scenes. In order to cope with the change, the three-stage door frame is produced and replaces the two-stage door frame step by step, and the three-stage door frame is adopted, so that the lifting height is increased to 1.5 times of the original lifting height under the condition that the vehicle height is not changed, and the adaptability of a working scene is obviously improved. However, in use, the width of the steel wing plate of the portal frame in the prior art is large, the portal frame is increased from the second level to the third level, the thickness of the portal frame is increased, the working blind area is enlarged, and the operation convenience and the safety are reduced. To address this problem, the forklift industry typically reduces the width of the mast section steel wing panels to improve the field of view, but this can result in a reduction in the stiffness and safety of the mast. Although it can be compensated for by increasing the strength of the material, the manufacturing cost is increased accordingly.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, reduce the working blind area, improve the operation visual field, not reduce the rigidity of the portal frame and save the portal frame material.
In order to achieve the above object, the present invention provides a hot-rolled C-section steel for a forklift mast, comprising: web 1, first pterygoid lamina 2 and second pterygoid lamina 3, the portal still includes in the fork truck: a boss 4; the first wing plate 2 and the second wing plate 3 are positioned at two ends of the lower surface of the web plate 1, and further form a C-shaped structure together with the web plate 1; the boss 4 is located at the joint of the lower surface of the web 1 and the left side surface of the second wing plate 3.
Preferably, the thickness of the web 1 is 10-13mm, and the width is 170-176 mm; the thickness of the first wing plate 2 is 23-27mm, and the width is 33-37 mm; the thickness of the second wing plate 3 is 25-30mm, and the width is 33-37 mm; the width of the boss 4 is 20-30mm, and the height is 3-5 mm.
Preferably, the joints of all parts in the hot-rolled C-shaped steel for the forklift mast are all in arc transition, and the arc radius is between 3 and 12 mm.
Preferably, the angle theta between the boss 4 and the lower surface of the web 1 is 2-5 degrees.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention reduces the structural width of the three-stage door frame and enlarges the operation visual field. By increasing the thickness of the two wing plates, the rigidity reduction of the portal frame caused by the reduction of the width of the wing plates is compensated.
2) The invention reduces the thickness of the web plate, increases the width of the web plate, improves the utilization efficiency of materials, further reduces the weight of the portal frame, and obviously saves materials under the condition that the rigidity of the portal frame is not obviously reduced.
3) According to the invention, on one hand, the strength of the web plate at the contact position of the web plate and the working roller is increased, on the other hand, the shape change of the connection part is alleviated, the abrasion of a die in the hot rolling processing process is reduced, and the hot rolling difficulty and the production cost are reduced; the design of circular arc transition at the joint of each part further improves the structural strength.
4) The invention has wide operation visual field, light weight, good rigidity, low hot rolling difficulty and production cost.
Drawings
FIG. 1 is a schematic representation of hot-rolled C-shaped steel for the forklift mast according to the invention.
Reference numerals:
1. the web, 2, first pterygoid lamina, 3, second pterygoid lamina, 4, boss.
Detailed Description
The invention is further illustrated by the following examples and figures.
Example 1
The invention provides hot-rolled C-shaped steel for a forklift mast, which comprises the following components in percentage by weight: web 1, first pterygoid lamina 2 and second pterygoid lamina 3, the portal still includes in the fork truck: a boss 4; the first wing plate 2 and the second wing plate 3 are positioned at two ends of the lower surface of the web plate 1, and further form a C-shaped structure together with the web plate 1; the boss 4 is located at the joint of the lower surface of the web 1 and the left side surface of the second wing plate 3.
The thickness of the web plate 1 is 10mm, and the width of the web plate is 170 mm; the first wing plate 2 has a thickness of 23mm and a width of 33 mm; the second wing plate 3 has a thickness of 25mm and a width of 33 mm; the width of the boss 4 is 20mm, and the height is 3 mm.
The joints of the above parts are all arc transitions, and the radius of the arc is 3 mm.
The included angle theta between the boss 4 and the lower surface of the web plate 1 is 2 degrees.
Example 2
The invention also provides hot-rolled C-shaped steel for the forklift mast, which comprises the following components in percentage by weight: web 1, first pterygoid lamina 2 and second pterygoid lamina 3, the portal still includes in the fork truck: a boss 4; the first wing plate 2 and the second wing plate 3 are positioned at two ends of the lower surface of the web plate 1, and further form a C-shaped structure together with the web plate 1; the boss 4 is located at the joint of the lower surface of the web 1 and the left side surface of the second wing plate 3.
The web plate 1 has a thickness of 11mm and a width of 173 mm; the first wing plate 2 has a thickness of 25mm and a width of 35 mm; the second wing plate 3 has a thickness of 27mm and a width of 35 mm; the width of the boss 4 is 25mm, and the height is 4 mm.
The joints of the above parts are all arc transitions, and the radius of the arc is 8 mm.
The angle theta between the boss 4 and the lower surface of the web 1 is 4 degrees.
Example 3
The invention also provides hot-rolled C-shaped steel for the forklift mast, which comprises the following components in percentage by weight: web 1, first pterygoid lamina 2 and second pterygoid lamina 3, the portal still includes in the fork truck: a boss (4); the first wing plate 2 and the second wing plate 3 are positioned at two ends of the lower surface of the web plate 1, and further form a C-shaped structure together with the web plate 1; the boss 4 is located at the joint of the lower surface of the web 1 and the left side surface of the second wing plate 3.
The thickness of the web plate 1 is 13mm, and the width of the web plate is 176 mm; the first wing plate 2 has a thickness of 27mm and a width of 37 mm; the second wing plate 3 has a thickness of 30mm and a width of 37 mm; the width of the boss 4 is 30mm, and the height is 5 mm.
The joints of the above parts are all arc transition, and the radius of the arc is 12 mm.
The angle theta between the boss 4 and the lower surface of the web 1 is 5 degrees.
According to the invention, the width of the two wing plates is reduced, the structural width of the three-stage portal frame is reduced, and the operation visual field is enlarged. By increasing the thickness of the two wing plates, the rigidity reduction of the portal frame caused by the reduction of the width of the wing plates is compensated.
According to the invention, the thickness of the web plate is reduced, the width of the web plate is increased, the material utilization efficiency is improved, the weight of the portal frame is further reduced, and the material is obviously saved under the condition that the rigidity of the portal frame is not obviously reduced.
According to the invention, the boss is additionally arranged on the left side surface of the second wing plate, so that the strength of the web plate at the contact position with the working roller is increased, the shape change of the connection part is alleviated, the abrasion of a die in the hot rolling process is reduced, and the hot rolling difficulty and the production cost are reduced.
The joints of all parts of the invention are designed in a circular arc transition way, thereby further improving the structural strength.
Conventional technical knowledge in the art can be used for the details which are not described in the present invention.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (4)
1. The utility model provides a fork truck is hot rolled C shaped steel for portal, fork truck is hot rolled C shaped steel for portal includes: web (1), first pterygoid lamina (2) and second pterygoid lamina (3), its characterized in that, fork truck is hot rolling C shaped steel for portal still includes: a boss (4); the first wing plate (2) and the second wing plate (3) are positioned at two ends of the lower surface of the web plate (1) and form a C-shaped structure with the web plate (1); the boss (4) is positioned at the joint of the lower surface of the web plate (1) and the left side surface of the second wing plate (3).
2. The hot-rolled C-shaped steel for the forklift mast according to claim 1, wherein the web (1) has a thickness of 10-13mm and a width of 170-176 mm; the thickness of the first wing plate (2) is 23-27mm, and the width is 33-37 mm; the thickness of the second wing plate (3) is 25-30mm, and the width is 33-37 mm; the width of the boss (4) is 20-30mm, and the height is 3-5 mm.
3. The hot-rolled C-shaped steel for the forklift mast as claimed in claim 1, wherein the joints of all parts in the hot-rolled C-shaped steel for the forklift mast are all arc transitions, and the arc radius is between 3mm and 12 mm.
4. The hot-rolled C-shaped steel for the forklift mast according to claim 1, characterized in that the included angle theta between the boss (4) and the lower surface of the web (1) is 2-5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110126827.7A CN112777528A (en) | 2021-01-29 | 2021-01-29 | Fork truck is hot rolling C shaped steel for portal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110126827.7A CN112777528A (en) | 2021-01-29 | 2021-01-29 | Fork truck is hot rolling C shaped steel for portal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112777528A true CN112777528A (en) | 2021-05-11 |
Family
ID=75759825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110126827.7A Pending CN112777528A (en) | 2021-01-29 | 2021-01-29 | Fork truck is hot rolling C shaped steel for portal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112777528A (en) |
-
2021
- 2021-01-29 CN CN202110126827.7A patent/CN112777528A/en active Pending
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