CN202657914U - Aerial work engineering machine and side-arranged folding arm support thereof - Google Patents
Aerial work engineering machine and side-arranged folding arm support thereof Download PDFInfo
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- CN202657914U CN202657914U CN 201220243185 CN201220243185U CN202657914U CN 202657914 U CN202657914 U CN 202657914U CN 201220243185 CN201220243185 CN 201220243185 CN 201220243185 U CN201220243185 U CN 201220243185U CN 202657914 U CN202657914 U CN 202657914U
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Abstract
The utility model discloses a side-arranged folding arm support which comprises a first arm and a second arm hinged to an arm head of the first arm. Under non-operating state, appropriate inclined angles are formed between hinged axes of the second arm and the first arm and the horizontal plane, a cylinder axis of the second arm is located above a cylinder axis of the first arm, and the cylinder axis of the second arm is parallel to the cylinder axis of the first arm. When the side-arranged folding arm support is in an operating process and the second arm rotates around the hinged axis, the cylinder axis of the second arm tends to the vertical plane of the first arm gradually, the distance between a barycenter of the second arm and the vertical plane of the first arm is reduced gradually, lateral bending moment of the second arm to the first arm is reduced, lateral bending deformation of the first arm is effectively lowered, and operation safety is improved. The utility model further discloses an aerial work engineering machine comprising the side-arranged folding arm support.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly relates to a kind of side foldable arm rack of high-altitude operation engineering machinery.In addition, the utility model also relates to a kind of high-altitude operation engineering machinery that comprises above-mentioned side foldable arm rack.
Background technology
Along with the fast development of China's economic construction, market is also more and more for the demand of high-altitude operation engineering machinery.
In order to solve the technical barrier of car load superelevation under the motoring condition, the jib structure of most high-altitude operation engineering machinery all adopts the arrangement form of folding side.Side foldable arm rack group refers to the not telescopic boom in same luffing plane of two group switching centres, and end head and the tail are hinged, drives by luffing mechanism, realizes that another organizes telescopic boom expansion and reclaims one group of telescopic boom relatively; The jib that is driven by amplitude oil cylinder in this amplitude changing process is called arm No. two, and another group jib then is called arm No. one.
Please refer to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is the structural representation of side foldable arm rack in the prior art; Fig. 2 is the distortion scheme drawing of side foldable arm rack under load among Fig. 1; Fig. 3 is that the luffing angle of No. two arms 102 of side foldable arm rack and an arm 101 is 90 structural representations when spending in the prior art.
G1 is the weight of No. two arms 102 among the figure, and L1 is that the barycenter of No. two arms 102 is to the projected length of distance in the cylindrical shell vertical plane surface of an arm 101 of hinge-point.
An arm 101 and No. two arms 102 of side foldable arm rack be arranged in parallel, one end of bindiny mechanism 103 is captiveed joint with the arm head of an arm 101, the arm tail of the other end of bindiny mechanism 103 and No. two arms 102 is hinged, and the arm head of No. two arms 102 is provided with workplatform 104; Between No. two arms 102 and bindiny mechanism 103, also be provided with the luffing mechanism (not shown), be used for driving expansion and the withdrawal of No. two arm 102 relative arms 101.
Because No. two arm 102 sides are placed, so the middle vertical plane S101 of the relative arm 101 of the barycenter of No. two arms 102 has certain side-play amount H1, cause an arm 101 can produce lateral deformation.
The tubular axis of an arm 101 and No. two arms 102 respectively hinged axis with No. two arms 102 and an arm 101 is vertical, and under off working state, the tubular axis of an arm 101, the hinge axes of the tubular axis of No. two arms 102 and No. two arms 102 all is in the same plane, if do not consider the impact of an arm distortion, then in the course of the work, the side-play amount H1 of barycenter to the one arm 101 middle vertical plane S101 of No. two arms 102 can not change along with the rotation of No. two arms 102, the weight of supposing No. two arms 102 is G1, and then the side direction moment of flexure of 102 pairs of arms of No. two arms, 101 generations is G1*H1.
If consider the impact of arm 101 distortion, as shown in Figure 2, the distance H 1 of barycenter to an arm 101 middle vertical plane S101 of No. two arms 102 also can increase gradually, so that the side direction moment of flexure that 102 pairs of arms of No. two arms 101 produce also increases gradually.
In the course of the work, an arm 101 also can be subject to the effect of the comprehensive external force such as Lateral Wind F, so that the side direction moment of flexure that arm 101 is subject to further increases, under the effect of total side direction moment M 1, the lateral deformation amount of an arm 101 can larger (being shown among Fig. 2), so that the stability of arm 101 structures and trouble free service ability are seriously influenced.
Therefore, the side direction moment of flexure that produces because of No. two arm sides that how to reduce in the side foldable arm rack that arm bears, thus reduce the lateral deformation of an arm, be the present technical issues that need to address of those skilled in the art.
The utility model content
The purpose of this utility model provides a kind of side foldable arm rack, and this side foldable arm rack can reduce the side direction moment of flexure that arm produces because of No. two arm sides, thereby reduces the lateral deformation of an arm.Another purpose of the present utility model provides a kind of high-altitude operation engineering machinery that comprises above-mentioned side foldable arm rack.
For solving the problems of the technologies described above, the utility model provides a kind of side foldable arm rack, comprise arm and No. two arms hinged with the arm head of a described arm, under the off working state, the hinged axis of described No. two arms and a described arm is horizontal by suitable angle, and the tubular axis of described No. two arms is positioned at the tubular axis top of a described arm.
Preferably, the angle of the hinged axis of described No. two arms and a described arm and horizontal surface is spent less than 5 greater than 0 degree.
Preferably, described No. two arms are hinged by transom and a described arm, and an end of described transom and the arm head of a described arm are fixed, and the arm tail of the other end of described transom and described No. two arms is hinged.
Preferably, described No. two arms are vertical with the tubular axis of the tubular axis of a described arm, described No. two arms with the hinged axis of a described arm.
Preferably, described transom is the mounting base of box-structure.
The utility model also provides a kind of high-altitude operation engineering machinery, comprises chassis and the side foldable arm rack that is installed on the described chassis, and described side foldable arm rack is above-mentioned each described side foldable arm rack.
Preferably, described high-altitude operation engineering machinery is specially elevating fire truck or aerial platform.
Relative above-mentioned background technology, side foldable arm rack provided by the utility model on the basis of existing technology, under off working state, there is suitable angle in the hinged axis of No. two arms and an arm by changed into horizontal surface parallel with horizontal surface, and the tubular axis of No. two arms is positioned at the tubular axis top of an arm and both still are in parastate; Like this when No. two arms when its hinge axes is rotated, its tubular axis is the middle vertical plane of a close arm gradually, namely can shorten the distance of No. two arm barycenter to arm middle vertical planes, thereby reduce the side direction moment of flexure that No. two arm self gravitations produce arm, and then reduce the lateral deformation amount of an arm, strengthened the stability of side foldable jib structure, the safety when having improved car load work.
Description of drawings
Fig. 1 is the structural representation of side folding arm in the prior art;
Fig. 2 is the distortion scheme drawing of side folding arm under load among Fig. 1;
Fig. 3 is that the luffing angle of an arm of side folding arm in the prior art and No. two arms is 90 structural representations when spending;
Fig. 4 is 90 structural representations when spending for the utility model provides the luffing angle of an arm and No. two arms in a kind of specific embodiment of side folding arm;
Structure diagram when Fig. 5 provides side folding arm off working state for the utility model;
Structure diagram when Fig. 6 provides side folding arm mode of operation for the utility model.
The specific embodiment
Core of the present utility model provides a kind of side foldable arm rack, and this side foldable arm rack can reduce the side direction moment of flexure that arm produces because of No. two arm sides, thereby reduces the lateral deformation of an arm.Another core of the present utility model provides a kind of high-altitude operation engineering machinery that comprises above-mentioned side foldable arm rack.
Herein related laterally, the noun of locality such as top all is with under the off working state; view from from the arm head of an arm of side folding arm to arm tail direction projection is the benchmark definition; the use that should be appreciated that the described noun of locality should not limit the scope that the application asks for protection.
In order to make those skilled in the art person understand better the utility model scheme, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 4, Fig. 5 and Fig. 6, Fig. 4 is 90 structural representations when spending for the utility model provides the luffing angle of an arm and No. two arms in a kind of specific embodiment of side folding arm; Structure diagram when Fig. 5 provides side folding arm off working state for the utility model; Structure diagram when Fig. 6 provides side folding arm mode of operation for the utility model.
In a kind of concrete embodiment, the side folding arm comprises an arm 1 and No. two arms 2; No. two arm 2 is hinged by transom 3 and an arm 1; An arm 1 and No. two arms 2 can certainly adopt other versions for the telescopic boom of more piece box arm intussusception, use needs all in the scope that the application asks for protection as long as satisfy.
Transom 3 can be the mounting base of box-structure; Transom 3 is with respect to the bearing of trend horizontally set of an arm 1, and an end of transom 3 is captiveed joint with the arm head of an arm 1, and the arm tail of the other end of transom 3 and No. two arms 2 is hinged, and the arm head of No. two arms 2 also is provided with workplatform 4.
Particularly, the tubular axis Z2 of the tubular axis Z1 of an arm 1, No. two arms 2 is vertical with the hinged axis Z3 of an arm 1 with No. two arms 2; Under off working state, the tubular axis Z 1 of an arm 1 is parallel with the tubular axis Z2 of No. two arms 2; In the course of the work, No. two arms 2 are in its hinge axes Z3 rotation process, and tubular axis Z1, the Z2 of an arm 1, No. two arms 2 and the hinge axes Z3 of No. two arms 2 remain plumbness.It is pointed out that for convenience, hereinafter with the hinged axis Z3 of No. two arms 2 and an arm 1 hinge axes Z3 referred to as No. two arms 2.
Also be provided with the luffing mechanism (not shown) between No. two arms 2 and the transom 3, realize expansion and the recovery of No. two arm 2 relative arms 1 by the driving of luffing mechanism.
With reference to figure 5, under the off working state, the hinge axes Z3 of No. two arms 2 is positioned at planar S 3, planar S 3 is vertical with middle vertical plane S2, the horizontal surface S1 of an arm 1, make the hinge axes Z3 of No. two arms 2 in planar S 3, turn over suitable angle theta around the tubular axis Z1 of an arm 1, and the tubular axis Z2 of No. two arms 2 is positioned at above the tubular axis Z1 of an arm 1; This moment the tubular axis Z2 of No. two arms 2 and an arm 1 tubular axis Z1 keeping parallelism still, can avoid both in fitting process, to interfere.
In the course of the work, when No. two arms 2 when its hinge axes Z3 rotates, because there are suitable angle theta in its hinge axes Z3 and horizontal surface S1 during initial setting up, and No. two arm 2 keeps vertical with hinge axes Z3 all the time in rotation process, so in rotation process, the tubular axis Z2 of No. two arms 2 can be gradually to the middle vertical plane S2 skew of an arm 1, with reference to figure 6, as can be seen from Figure 6, along with the rotation of No. two arms 2, the tubular axis Z2 of No. two arms 2 is tending towards the middle vertical plane S2 of an arm 1, and intersects with it, namely the distance of the middle vertical plane S2 of barycenter to an arm 1 of No. two arms 2 is dwindled gradually, and the side direction moment of flexure that 2 pairs of arms of No. two arms 1 produce also reduces thereupon gradually.
The middle vertical plane S2 that it is pointed out that an arm 1 refers to vertical with arm 1 bottom surface and comprises the plane of arm 1 a tubular axis Z1.
Comparison diagram 3 and Fig. 4, the below specify the decrease of the side direction moment of flexure that 2 pairs of arms of No. two arms 1 produce in the side folding arm that the utility model provides; The luffing angle that is respectively No. two arms 2 and an arm 1 shown in Fig. 3 and Fig. 4 is the structural representation of side foldable arm rack in 90 prior aries when spending and the utility model.
Here need to prove that the luffing angle of an arm 1 and No. two arms 2 refers to the angle of the bearing of trend of the bearing of trend of an arm 1 and No. two arms 2.
X represents the distance of barycenter to an arm 1 middle vertical plane S2 of No. two arms 2 among Fig. 4, and G represents the weight of No. two arms 2, and L represents that the hinge of No. two arms 2 is to the projected length of distance in the cylindrical shell vertical plane surface of an arm 1 of barycenter.
Here need to prove that the cylindrical shell vertical plane surface of a described arm 1 refers to and the plane of the end parts parallel of an arm 1 that hereinafter indication is identical therewith, repeats no more; For convenience, hereinafter with the hinge of No. two arms 2 to the distance of the barycenter projected length L in arm 1 cylindrical shell vertical plane surface referred to as No. two arm 2 barycenter projected length L.
In the prior art, namely shown in Figure 3 in, the side direction moment of flexure that 2 pairs of arms of No. two arms 1 produce is G1*H1; In side foldable arm rack provided by the utility model, because the bottom surface of transom 3 is horizontal by angle theta, namely the hinge axes Z3 of No. two arms 2 is horizontal by angle theta, so No. two arms 2 are in rotation process, its axis Z2 is the middle vertical plane S2 of a close arm 1 gradually, the barycenter of No. two arms 2 is also thereupon near the middle vertical plane S2 of an arm 1, the distance X of the middle vertical plane S2 of barycenter to an arm 1 of No. two arms 2 is H 1-L*sin θ (being shown among Fig. 4), i.e. the side direction moment of flexure of 2 pairs of arms of No. two arms, 1 generation is G(H1-L*sin θ); Compared with prior art, if the weight of No. two arms 2 is constant, the side direction moment of flexure that then 2 pairs of arms of No. two arms 1 produce in the side foldable arm rack provided by the utility model has reduced GL*sin θ.
No. two arm 2 barycenter projected length L change along with the variation of No. two arms 2 and arm 1 a luffing angle, and when the luffing angle is 90 when spending, No. two arm 2 barycenter projected length L are the longest, as shown in Figure 4; Because angle theta is initial setting value, so the decrease of side direction moment of flexure depends on the size of No. two arm 2 barycenter projected length L, the size of L is relevant with the mode of operation of No. two arms 2 with an arm 1 again, when the luffing angle of an arm 1 and No. two arms 2 is 90 when spending, No. two arm 2 barycenter projected length L reach maxim, and the decrease of 2 pairs of arm 1 side direction moments of flexure of No. two arms this moment also reaches maxim.
Compared with prior art, when the utility model is in off working state at high-altitude operation engineering machinery, make hinge axes Z3 and the horizontal surface S1 of No. two arms 2 have suitable angle theta, so that No. two arms 2 are in rotation process, its tubular axis Z2 is the middle vertical plane S2 of a close arm 1 gradually, thereby reduced the distance of barycenter to an arm 1 middle vertical plane S2 of No. two arms 2, and then can reduce the side direction moment of flexure that 2 pairs of arms of No. two arms 1 produce, can effectively reduce the side-bend distortion of an arm, the safety when improving operation.
Here need to prove, the scope of the hinge axes Z3 of an arm 1 described herein and No. two arms 2 and the angle theta of horizontal surface S1 can be for spending less than 5 greater than 0 degree, certainly, also can suitably adjust angle between hinge axes Z3 and the horizontal surface S1 according to actual conditions.
Except above-mentioned side foldable arm rack, the utility model also provides a kind of high-altitude operation engineering machinery that comprises above-mentioned side foldable arm rack, and the structure of these other each several parts of high-altitude operation engineering machinery please refer to prior art, and this paper repeats no more.
Particularly, above-mentioned high-altitude operation engineering machinery can be elevating fire truck or aerial platform.
More than high-altitude operation engineering machinery provided by the utility model and side folding arm thereof are described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (7)
1. side foldable arm rack, comprise arm and No. two arms hinged with the arm head of a described arm, it is characterized in that, under the off working state, the hinged axis of described No. two arms and a described arm is horizontal by suitable angle, and the tubular axis of described No. two arms is positioned at the tubular axis top of a described arm.
2. side foldable arm rack as claimed in claim 1 is characterized in that, the hinged axis of described No. two arms and a described arm and the angle of horizontal surface are spent less than 5 greater than 0 degree.
3. side foldable arm rack as claimed in claim 2, it is characterized in that, described No. two arms are hinged by transom and a described arm, and an end of described transom and the arm head of a described arm are fixed, and the arm tail of the other end of described transom and described No. two arms is hinged.
4. side foldable arm rack as claimed in claim 3 is characterized in that, described No. two arms are vertical with the tubular axis of the tubular axis of a described arm, described No. two arms with the hinged axis of a described arm.
5. side foldable arm rack as claimed in claim 3 is characterized in that, described transom is the mounting base of box-structure.
6. a high-altitude operation engineering machinery comprises chassis and the side foldable arm rack that is installed on the described chassis, it is characterized in that described side foldable arm rack is such as each described side foldable arm rack of claim 1 to 5.
7. high-altitude operation engineering machinery as claimed in claim 6 is characterized in that, described high-altitude operation engineering machinery is specially elevating fire truck or aerial platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220243185 CN202657914U (en) | 2012-05-25 | 2012-05-25 | Aerial work engineering machine and side-arranged folding arm support thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220243185 CN202657914U (en) | 2012-05-25 | 2012-05-25 | Aerial work engineering machine and side-arranged folding arm support thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202657914U true CN202657914U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220243185 Expired - Lifetime CN202657914U (en) | 2012-05-25 | 2012-05-25 | Aerial work engineering machine and side-arranged folding arm support thereof |
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| Country | Link |
|---|---|
| CN (1) | CN202657914U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674214A (en) * | 2012-05-25 | 2012-09-19 | 徐州重型机械有限公司 | Overhead working engineering machine and side foldable boom thereof |
| CN103318814A (en) * | 2013-06-09 | 2013-09-25 | 三一汽车制造有限公司 | Boom device and elevating platform fire truck |
-
2012
- 2012-05-25 CN CN 201220243185 patent/CN202657914U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674214A (en) * | 2012-05-25 | 2012-09-19 | 徐州重型机械有限公司 | Overhead working engineering machine and side foldable boom thereof |
| CN102674214B (en) * | 2012-05-25 | 2015-06-17 | 徐州重型机械有限公司 | Overhead working engineering machine and side foldable boom thereof |
| CN103318814A (en) * | 2013-06-09 | 2013-09-25 | 三一汽车制造有限公司 | Boom device and elevating platform fire truck |
| CN103318814B (en) * | 2013-06-09 | 2015-10-28 | 三一汽车制造有限公司 | A kind of boom device and Elevating platform fire truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20150617 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20150617 |
|
| RGAV | Abandon patent right to avoid regrant |