CN215719877U - Flexible arm turning device of platform fire engine ascends a height - Google Patents
Flexible arm turning device of platform fire engine ascends a height Download PDFInfo
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- CN215719877U CN215719877U CN202122169158.XU CN202122169158U CN215719877U CN 215719877 U CN215719877 U CN 215719877U CN 202122169158 U CN202122169158 U CN 202122169158U CN 215719877 U CN215719877 U CN 215719877U
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- telescopic boom
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Abstract
The embodiment of the utility model discloses a flexible arm overturning device of a climbing platform fire truck, which belongs to the technical field of fire fighting and rescue equipment and comprises an automobile chassis, wherein a flexible arm is hinged to the tail of the automobile chassis, a turnover hydraulic oil cylinder is arranged on the automobile chassis, one end of the turnover hydraulic oil cylinder is hinged to the automobile chassis, the other end of the turnover hydraulic oil cylinder is hinged to the flexible arm, an auxiliary supporting oil cylinder is arranged on the automobile chassis, the body of the auxiliary supporting oil cylinder is fixedly arranged on the automobile chassis, and the extending direction of a piston rod of the auxiliary supporting oil cylinder is vertically upward. The utility model solves the technical problem that the installation included angle of the existing overturning oil cylinder and the telescopic arm is large so as to occupy the height space above the automobile chassis, and is widely applied to high-altitude fire fighting or rescue.
Description
Technical Field
The embodiment of the utility model relates to the technical field of fire fighting and rescue equipment, in particular to a flexible arm overturning device of a fire fighting truck with an ascending platform.
Background
Stipulate in the general rescue fire engine standard in the world at present, the fire engine is in the road is gone, its maximum height is 4 meters, remove automobile chassis's height, in surplus high space, need as far as possible arrange flexible arm, flexible arm is longer, the volume is big more, weight is big more, when flexible arm is flexible work, it is certain angle to need a upset hydro-cylinder to support its upset, this upset hydro-cylinder will become certain installation contained angle with flexible arm usually, just can support flexible arm, this installation contained angle will be greater than 30 degrees usually, consequently, the upset hydro-cylinder has taken some high space again, this sectional area that just leads to flexible arm reduces, thereby the extension length of flexible arm has been reduced.
Therefore, in the technical field of fire fighting and rescue equipment, research and improvement needs still exist for the telescopic arm overturning device of the elevating platform fire truck, which is also a research focus and a focus in the technical field of fire fighting and rescue equipment at present and is a starting point of the completion of the utility model.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a turning device for a telescopic arm of a fire truck of a climbing platform, which aims to solve the technical problem that the existing turning oil cylinder and the telescopic arm have a large installation included angle and occupy a height space above an automobile chassis.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to the embodiment of the utility model, the flexible arm overturning device of the elevating platform fire truck comprises an automobile chassis, wherein the tail part of the automobile chassis is hinged with a flexible arm, the automobile chassis is provided with an overturning hydraulic cylinder, one end of the overturning hydraulic cylinder is hinged to the automobile chassis, the other end of the overturning hydraulic cylinder is hinged to the flexible arm, the automobile chassis is provided with an auxiliary supporting cylinder, the cylinder body of the auxiliary supporting cylinder is fixedly arranged on the automobile chassis, and the extending direction of the piston rod of the auxiliary supporting cylinder is vertically upward.
Furthermore, the end part of a cylinder body of the turning hydraulic oil cylinder is hinged to the automobile chassis, and the end part of a piston rod of the turning hydraulic oil cylinder is hinged to the telescopic arm.
Further, when the telescopic arm is horizontally arranged on the automobile chassis, the installation included angle between the axis of the turnover hydraulic oil cylinder and the automobile chassis is smaller than 5 degrees.
Furthermore, a piston rod of the auxiliary support oil cylinder abuts against the telescopic arm.
Furthermore, a first working port and a second working port of the turnover hydraulic oil cylinder are respectively connected with an oil inlet pipeline and an oil return pipeline through a first reversing valve, the auxiliary support hydraulic oil cylinder is a single-action oil cylinder, a rodless cavity of the auxiliary support oil cylinder is connected with a hydraulic control one-way valve, and a working port and a control port of the hydraulic control one-way valve are respectively connected with the oil inlet pipeline and the oil return pipeline through a second reversing valve.
Further, the first reversing valve and the second reversing valve are Y-shaped three-position four-way electromagnetic reversing valves.
The embodiment of the utility model has the following advantages:
(1) the auxiliary supporting oil cylinder is arranged and used for lifting and supporting the telescopic arm, the auxiliary supporting oil cylinder firstly lifts the telescopic arm to a certain height, the hydraulic oil cylinder is turned over, and then the telescopic arm is turned over to be in a vertical state, so that the installation inclination angle of the turning hydraulic oil cylinder is reduced, and the height space above an automobile chassis is saved.
(2) Because the rodless cavity of the auxiliary supporting oil cylinder is connected with the hydraulic control one-way valve, when the telescopic boom falls back, hydraulic oil in the oil inlet pipeline opens a control oil way of the hydraulic control one-way valve, the hydraulic control one-way valve is opened, hydraulic oil in the rodless cavity of the auxiliary supporting oil cylinder flows into the oil return pipeline from a working port of the hydraulic control one-way valve, and under the action of gravity of the telescopic boom, the auxiliary supporting oil cylinder supports the telescopic boom to slowly turn over and fall down, so that the phenomenon that the telescopic boom falls back too much and collides with an automobile chassis violently, and the telescopic boom is damaged is avoided.
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. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a state of a tilting process of the telescopic boom according to the embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a state of turning over the telescopic boom according to the embodiment of the present invention;
FIG. 4 is a hydraulic control schematic of an embodiment of the present invention;
in the figure: 1. the automobile chassis comprises an automobile chassis, 2, a telescopic arm, 3, an auxiliary supporting oil cylinder, 4, a front hydraulic supporting leg, 5, a turnover hydraulic oil cylinder, 6, a rear hydraulic supporting leg, 7, a transition hydraulic oil cylinder, 8, a first reversing valve, 9, a hydraulic control one-way valve, 10, a second reversing valve, 11, an oil inlet pipeline, 12 and an oil return pipeline.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. 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 present specification, the terms "front", "rear", "left", "right" and "middle" are used for clarity of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof are also regarded as the scope of the present invention without substantial changes in the technical content.
As shown in fig. 1 and 3, the embodiment of the utility model provides a flexible arm turning device of a fire engine with a climbing platform, which comprises an automobile chassis 1, wherein a flexible arm 2 is hinged at the tail of the automobile chassis 1, a front hydraulic leg 4 is arranged at one end of the automobile chassis 1 far away from the flexible arm 2, a transition hydraulic leg 7 is arranged at one end of the automobile chassis 1 close to the flexible arm 2, a rear hydraulic leg 6 is arranged on the flexible arm 2, a turning hydraulic cylinder 5 is arranged on the automobile chassis 1, one end of the turning hydraulic cylinder 5 is hinged on the automobile chassis 1, the other end is hinged on the flexible arm 2, specifically, the cylinder body end of the turning hydraulic cylinder 5 is hinged on the automobile chassis 1, the piston rod end of the turning hydraulic cylinder 5 is hinged on the flexible arm 2, the turning hydraulic cylinder 5 can turn the flexible arm 2 from a horizontal state to a vertical state, the front hydraulic leg 4 and the transition hydraulic leg 7 firstly support the automobile chassis 1 to be horizontal, the tilting hydraulic cylinder 5 and the rear hydraulic leg 6 then act together to hold the telescopic arm 2 in an upright position. As shown in fig. 2, the auxiliary supporting oil cylinder 3 is installed on the automobile chassis 1, the cylinder body of the auxiliary supporting oil cylinder 3 is fixedly installed on the automobile chassis 1, the extending direction of the piston rod of the auxiliary supporting oil cylinder 3 is vertical upward, the auxiliary supporting oil cylinder 3 is used for lifting and supporting the telescopic arm 2, the telescopic arm 2 is lifted by a certain height at first by the auxiliary supporting oil cylinder 3, the turnover hydraulic oil cylinder 5 continues to turn the telescopic arm 2 to a vertical state, the installation inclination angle of the turnover hydraulic oil cylinder 5 is reduced, and the height space above the automobile chassis 1 is saved.
When flexible arm 2 level set up on vehicle chassis 1, the installation contained angle between upset hydraulic cylinder 5's axis and the vehicle chassis 1 is less than 5 degrees, and the piston rod top of auxiliary stay hydro-cylinder 3 leans on flexible arm 2, and this kind of structure has reduced greatly that upset hydraulic cylinder 5 occupies the high space of vehicle chassis 1 top, uses the sectional area of flexible arm 2 in the limited high space of vehicle chassis 1 top as far as, has increased the effective rescue height of flexible arm 2 as far as.
As shown in fig. 4, a first working port and a second working port of the tilting hydraulic cylinder 5 are respectively connected with an oil inlet pipeline 11 and an oil return pipeline 12 through a first reversing valve 8, the auxiliary supporting hydraulic cylinder is a single-acting cylinder, a rodless cavity of the auxiliary supporting cylinder 3 is connected with a hydraulic control one-way valve 9, a working port and a control port of the hydraulic control one-way valve 9 are respectively connected with the oil inlet pipeline 11 and the oil return pipeline 12 through a second reversing valve 10, the first reversing valve 8 and the second reversing valve 10 are both Y-shaped three-position four-way electromagnetic reversing valves, specifically, a rod cavity of the tilting hydraulic cylinder 5 is connected with an oil port a of the first reversing valve 8, a rodless cavity of the tilting hydraulic cylinder 5 is connected with an oil port B of the first reversing valve 8, an oil port P of the first reversing valve 8 is connected with the oil inlet pipeline 11, a T of the first reversing valve 8 is connected with an oil port pipeline 12, a working port of the hydraulic control one-way valve 9 is connected with an oil port a of the second reversing valve 10, a control port of the hydraulic control one-way valve 9 is connected with a port B of the second reversing valve 10, a port P of the second reversing valve 10 is connected with an oil inlet pipeline 11, and a port T of the second reversing valve 10 is connected with an oil return pipeline 12.
When the telescopic boom 2 needs to be vertically turned over, the first reversing valve 8 is located at a middle position, the second reversing valve 10 acts, oil is fed into a rodless cavity of the auxiliary support oil cylinder 3, a piston rod of the auxiliary support oil cylinder 3 extends out, the lifting telescopic boom 2 turns over around a hinged point, under the pulling and falling action of the auxiliary support oil cylinder 3, the rodless cavity of the turning hydraulic oil cylinder 5 is fed passively through an oil return pipeline 12, when the turning hydraulic boom is turned over to 30 degrees, the second reversing valve 10 is switched to the middle position, the auxiliary support oil cylinder 3 is kept in a piston rod extending state, at the moment, the first reversing valve 8 acts, the rodless cavity of the turning hydraulic oil cylinder 5 is fed actively through an oil inlet pipeline 11, the piston rod of the turning hydraulic oil cylinder 5 extends out, the support telescopic boom 2 continues to turn over until the telescopic boom 2 turns over to a vertical state, the first reversing valve 8 is switched to the middle position, and the telescopic boom 2 is kept in a vertical working state.
When flexible arm 2 needs the level upset, 8 actions of first switching-over valve, the pole chamber that has of upset hydraulic cylinder 5 is by the initiative oil feed of oil feed line 11, the piston rod withdrawal of upset hydraulic cylinder 5, drive the reverse upset of flexible arm 2, when flexible arm 2 runs into the top of auxiliary stay hydro-cylinder 3 piston rod, the action of second switching-over valve 10, the control oil circuit of pilot operated check valve 9 is opened to oil feed line 11 hydraulic oil, pilot operated check valve 9 is opened, the hydraulic oil that auxiliary stay hydro-cylinder 3 does not have the pole chamber flows into oil return line 12 by the working port of pilot operated check valve 9, under the action of flexible arm 2 gravity, auxiliary stay hydro-cylinder 3 is bearing flexible arm 2 and is slowly overturning descending, the violent collision of flexible arm 2 volume of falling too big and chassis 1 emergence of the car has been avoided, and lead to damaging flexible arm 2.
Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (6)
1. The utility model provides a flexible arm turning device of platform fire engine ascends a height, includes vehicle chassis, its characterized in that, vehicle chassis afterbody articulates installs flexible arm, vehicle chassis is last to install upset hydraulic cylinder, the articulated installation of one end of upset hydraulic cylinder in vehicle chassis is last, the articulated installation of the other end in on the flexible arm, vehicle chassis is last to install the auxiliary stay hydro-cylinder, the cylinder body fixed mounting of auxiliary stay hydro-cylinder in vehicle chassis is last, the piston rod of auxiliary stay hydro-cylinder stretches out the vertical up of direction.
2. The elevating platform fire truck telescopic boom overturning device as claimed in claim 1, wherein the cylinder body end of the overturning hydraulic cylinder is hinged on the automobile chassis, and the piston rod end of the overturning hydraulic cylinder is hinged on the telescopic boom.
3. The elevating platform fire truck telescopic boom overturning device as claimed in claim 1, wherein when the telescopic boom is horizontally arranged on the automobile chassis, an installation included angle between an axis of the overturning hydraulic oil cylinder and the automobile chassis is less than 5 degrees.
4. The elevating platform fire truck telescopic boom overturning device as claimed in claim 3, wherein the piston rod of the auxiliary support cylinder abuts against the telescopic boom.
5. The telescopic boom overturning device for the elevating platform fire truck as claimed in any one of claims 1 to 4, wherein a first working port and a second working port of the overturning hydraulic cylinder are respectively connected with an oil inlet pipeline and an oil return pipeline through a first reversing valve, the auxiliary supporting hydraulic cylinder is a single-acting cylinder, a rodless cavity of the auxiliary supporting hydraulic cylinder is connected with a hydraulic control one-way valve, and a working port and a control port of the hydraulic control one-way valve are respectively connected with the oil inlet pipeline and the oil return pipeline through a second reversing valve.
6. The telescopic boom overturning device for the elevating platform fire fighting truck according to claim 5, wherein the first reversing valve and the second reversing valve are Y-shaped three-position four-way electromagnetic reversing valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122169158.XU CN215719877U (en) | 2021-09-09 | 2021-09-09 | Flexible arm turning device of platform fire engine ascends a height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122169158.XU CN215719877U (en) | 2021-09-09 | 2021-09-09 | Flexible arm turning device of platform fire engine ascends a height |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215719877U true CN215719877U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122169158.XU Active CN215719877U (en) | 2021-09-09 | 2021-09-09 | Flexible arm turning device of platform fire engine ascends a height |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215719877U (en) |
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2021
- 2021-09-09 CN CN202122169158.XU patent/CN215719877U/en active Active
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