CN212429599U - Air spring and cab side door using same - Google Patents
Air spring and cab side door using same Download PDFInfo
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- CN212429599U CN212429599U CN202020913117.XU CN202020913117U CN212429599U CN 212429599 U CN212429599 U CN 212429599U CN 202020913117 U CN202020913117 U CN 202020913117U CN 212429599 U CN212429599 U CN 212429599U
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- guide groove
- air guide
- side door
- cylinder body
- cab
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- 238000007789 sealing Methods 0.000 claims abstract description 3
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
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Abstract
The utility model discloses an air spring, which comprises a cylinder body with a sealing structure, wherein a cavity and a piston rod which is connected in the cavity in a sliding way are arranged in the cylinder body, the lower end of the piston rod is fixedly connected with a boss, the area of the upper end of the boss is smaller than that of the lower end of the boss, the cylinder body is provided with air guide grooves which are arranged along the axial direction of the cylinder body, each air guide groove comprises a first air guide groove and at least one second air guide groove, the first air guide groove is positioned at one end of the cylinder body, which is far away from the piston rod, the lengths of the first air guide groove and the second air guide groove are larger than the thickness of the boss, both ends of the first air guide groove and the second air guide groove are communicated with the cavity, the air spring can be provided with a plurality of air guide grooves according to needs by arranging the air guide grooves in the air spring, and further can provide the air spring with a plurality of, different working requirements are met, and the applicability of the application is improved.
Description
Technical Field
The utility model relates to an air spring technical field specifically is an air spring and use driver's cabin side door of air spring.
Background
The application of the air spring on the forklift is very common, the hood, the box cover and the side door are all applied, the traditional air spring only has one stroke, and when the secondary opening angle of the side door needs to be realized, some mechanical structures are often added, the installation is complex, the cost is increased, and the operation is not very convenient.
Because the electric forklift has a very compact structure, parts such as a storage battery and a motor are mostly arranged below the inside of the cab. In order to facilitate maintenance and hoisting and replacing the storage battery, the opening angle of the cab side door is required to be larger than 90 degrees. After the side door is opened, can kick-back because gravity or external force, there is the potential safety hazard, so generally all can install air spring or fixed lock on the side door, prevent that the side door from kick-backing and hindering the people. The existing structure can only be kept at a fixed maximum opening angle after the side door is opened, no matter the side door is an air spring or a fixed lock.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an air spring and use driver's cabin side door of air spring to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides an air spring, includes seal structure's cylinder body, be equipped with cavity and sliding connection in the cylinder body in the piston rod in the cavity, piston rod lower extreme fixedly connected with boss, the area of boss upper end is less than the area of boss lower extreme, be equipped with on the cylinder body and follow the air guide groove that cylinder body axial direction arranged, the air guide groove includes first air guide groove and at least one second air guide groove, first air guide groove is located keep away from on the cylinder body the one end of piston rod, the length in first air guide groove, second air guide groove is greater than the thickness of boss, the both ends in first air guide groove, second air guide groove all communicate with the cavity.
As a further aspect of the present invention: the cavity comprises an upper cavity located above the boss and a lower cavity located below the boss.
As a further aspect of the present invention: and a blocking section is arranged between the adjacent air guide grooves.
As a further aspect of the present invention: and inert high-pressure gas is arranged in the cavity.
As a further aspect of the present invention: the second air guide groove is provided with one, and the second air guide groove is located at one end, far away from the first air guide groove, of the cylinder body.
As a further aspect of the present invention: one end of the cylinder body is fixedly connected with a guide sleeve, the piston rod is inserted in the guide sleeve, and the guide sleeve is connected with the piston rod in a sealing mode.
The utility model provides a driver's cabin side door, including driver's cabin frame and with driver's cabin frame rotates the driver's cabin side door of connecting, the driver's cabin side door with be connected with the air spring between the driver's cabin frame, the air spring both ends with driver's cabin side door, driver's cabin frame all rotate to be connected.
As a further aspect of the present invention: the cab side door is provided with a first support, and the gas spring is hinged to the first support.
As a further aspect of the present invention: and a second support is arranged on the cab frame, and the gas spring is hinged with the second support.
Compared with the prior art, the beneficial effects of the utility model are that:
1. according to the air spring, the air guide grooves are formed in the air spring, and the air spring with multiple strokes can be provided as required, so that multiple supporting balance points can be provided, different working requirements can be met, and the application performance is improved;
2. when the air spring is used on the side door of the forklift cab, two opening degrees can be provided for the side door of the forklift cab, the first-level opening degree can meet the requirement that a driver gets on or off the forklift, the side door can be conveniently closed when the driver sits on a seat, and when the side door is opened, the first-level opening degree is reached at first, so that misoperation can be avoided, and potential safety hazards caused by overlarge opening angle can be avoided; the secondary opening degree can be opened according to the requirement, and the opening mode is simple and easy to operate;
3. the application has the advantages of simple structure, low manufacturing cost and easy popularization.
Drawings
FIG. 1 is a schematic view of a gas spring of the present embodiment in a fully compressed state;
FIG. 2 is a schematic view of the gas spring of the present embodiment illustrating a first stage of travel;
FIG. 3 is a schematic diagram of the gas spring of the present embodiment illustrating a two-stage travel;
FIG. 4 is a schematic view of a cab-side door closing structure;
FIG. 5 is a schematic view of a first-level opening angle of a side door of a cab;
fig. 6 is a schematic view of a two-stage opening angle of the cab-side door.
In the figure: 1-cab side door, 11-first bracket, 2-cab frame, 21-second bracket, 3-gas spring, 31-piston rod, 32-cylinder, 33-retardation section, 34-boss, 35-first gas guide groove, 36-second gas guide groove, 37-guide sleeve, 38-upper cavity and 39-lower cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, in an embodiment of the present invention, an air spring includes a cylinder body 32 having a sealed structure, a cavity and a piston rod 31 slidably connected in the cavity are disposed in the cylinder body 32, a guide sleeve 37 is fixedly connected to one end of the cylinder body 32, the piston rod 31 is inserted into the guide sleeve 37, the guide sleeve 37 is hermetically connected to the piston rod 31, and an inert high-pressure gas is disposed in the cavity.
Piston rod 31 lower extreme fixedly connected with boss 34, the cavity is including the last cavity 38 that is located boss 34 top and the lower cavity 39 that is located boss 34 below, the area of boss 34 upper end is less than the area of boss 34 lower extreme, be equipped with the air guide groove of arranging along cylinder body 32 axial direction on the cylinder body 32, the air guide groove includes first air guide groove 36 and at least one second air guide groove 35, be equipped with retardation section 33 between the adjacent air guide groove, in this embodiment, second air guide groove 35 is equipped with one, first air guide groove 36 is located the one end of keeping away from piston rod 31 on cylinder body 32, second air guide groove 35 is located the one end of keeping away from first air guide groove 36 on cylinder body 32, first air guide groove 36, the length of second air guide groove 35 is greater than the thickness of boss 34, first air guide groove 36, the both ends of second air guide groove 35 all communicate with the cavity.
The cavity within the gas spring cylinder 32 is filled with an inert high pressure gas. When the gas spring is in a compressed state, the piston rod 31 is fully pressed into the gas spring cylinder 32. The boss 34 at the bottom of the piston rod 31 divides the cavity in the cylinder into an upper cavity 38 and a lower cavity 39. The first air guide groove 36 equalizes the pressure in the two cavities, and because the surface area of the boss 34 in the lower cavity 39 is larger than that of the upper cavity 38, under the action of high pressure, a pressure difference is generated on two sides of the boss 34, so that the piston rod 31 is extended outwards.
The piston rod 31 continues to extend, the volume of the upper cavity 38 becomes smaller, and the piston rod reaches the blocking section 33, and because the blocking section 33 is not provided with the air guide groove, the air pressure in the upper cavity 38 will continue to increase until the pressure difference between the two sides of the boss 34 is zero, the piston rod 31 stops extending, and the first stroke is reached.
If the piston rod 31 needs to be extended to reach the second stroke, external force is needed to stretch the piston rod 31 until the boss 34 exceeds the retarding section 33, at this time, due to the existence of the second air guide groove 35, the air pressure of the upper cavity and the lower cavity is kept equal again, a pressure difference is generated on two sides of the boss 34, and the piston rod 31 continues to be extended until the piston rod is extended to the longest and reaches the second stroke.
Referring to fig. 4-6, a cab side door includes a cab frame 2 and a cab side door 1 rotatably connected to the cab frame 2, an air spring 3 is connected between the cab side door 1 and the cab frame 2, both ends of the air spring 3 rotate with the cab side door 1 and the cab frame 2, a first bracket 11 is disposed on the cab side door 1, the air spring 3 is hinged to the first bracket 11, a second bracket 21 is disposed on the cab frame 2, and the air spring 3 is hinged to the second bracket 21
When the cab side door 1 is closed, the piston rod 31 of the gas spring 3 is completely pressed into the gas spring cylinder 32. When the side door is opened, the piston rod 31 begins to extend, when the stroke reaches 60mm, the piston rod 31 enters the blocking section 33, and the length of the blocking section 33 is 50 mm. The side door of the cab is at a first opening angle, and the side door can be maintained at this angle. The angle can be designed to be about 40-50 degrees, and a driver can conveniently get on or off the bus in daily life.
When the forklift needs to be overhauled and the storage battery is hoisted, and the side door of the cab needs to be opened at a larger angle, the side door 1 of the cab can be pushed to the outer side, so that the piston rod 31 continues to be stretched, and after the piston rod exceeds the retardation section 33, the piston rod 31 can continue to be stretched until the end of the stroke is stopped. At the moment, the side door 1 of the cab reaches a secondary opening angle which can reach 160-170 degrees, and the requirements of overhauling and hoisting the storage battery are met.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A gas spring comprises a cylinder body (32) with a sealing structure, a cavity and a piston rod (31) which is connected in the cavity in a sliding way are arranged in the cylinder body (32), it is characterized in that the lower end of the piston rod (31) is fixedly connected with a boss (34), the area of the upper end of the boss (34) is smaller than that of the lower end of the boss (34), the cylinder body (32) is provided with an air guide groove which is arranged along the axial direction of the cylinder body (32), the air guide grooves comprise a first air guide groove (36) and at least one second air guide groove (35), the first air guide groove (36) is positioned at one end of the cylinder body (32) far away from the piston rod (31), the lengths of the first air guide groove (36) and the second air guide groove (35) are larger than the thickness of the lug boss (34), and the two ends of the first air guide groove (36) and the second air guide groove (35) are communicated with the cavity.
2. A gas spring as claimed in claim 1, wherein said cavities include an upper cavity (38) above said boss (34) and a lower cavity (39) below said boss (34).
3. A gas spring as claimed in claim 1, wherein a blocking section (33) is provided between adjacent gas guide grooves.
4. A gas spring as claimed in claim 1, wherein an inert high pressure gas is provided within said cavity.
5. A gas spring as claimed in claim 1, wherein one of said second gas guide grooves (35) is provided, the second gas guide groove (35) being located at an end of the cylinder body (32) remote from said first gas guide groove (36).
6. A gas spring as claimed in claim 1, characterized in that a guide sleeve (37) is fixedly connected to one end of the cylinder body (32), the piston rod (31) is inserted into the guide sleeve (37), and the guide sleeve (37) is sealingly connected to the piston rod (31).
7. A kind of cab side door using the air spring of any one of claims 1-6, including the cab frame (2) and cab side door (1) that is connected with the said cab frame (2) rotation, characterized by that, there are air springs (3) between said cab side door (1) and said cab frame (2), the both ends of said air spring (3) and said cab side door (1), cab frame (2) are connected with rotation.
8. The cab side door according to claim 7, wherein a first bracket (11) is provided on the cab side door (1), and the gas spring (3) is hinged to the first bracket (11).
9. The side door of the cab as claimed in claim 7, wherein a second bracket (21) is provided on the cab frame (2), and the gas spring (3) is connected to the second bracket (21) in an articulated manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020913117.XU CN212429599U (en) | 2020-05-25 | 2020-05-25 | Air spring and cab side door using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020913117.XU CN212429599U (en) | 2020-05-25 | 2020-05-25 | Air spring and cab side door using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212429599U true CN212429599U (en) | 2021-01-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020913117.XU Active CN212429599U (en) | 2020-05-25 | 2020-05-25 | Air spring and cab side door using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212429599U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649088A (en) * | 2020-05-25 | 2020-09-11 | 安徽合力股份有限公司 | A gas spring and a cab side door using the gas spring |
-
2020
- 2020-05-25 CN CN202020913117.XU patent/CN212429599U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649088A (en) * | 2020-05-25 | 2020-09-11 | 安徽合力股份有限公司 | A gas spring and a cab side door using the gas spring |
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