CN214495634U - Cantilever crane for aerial work platform and aerial work platform - Google Patents
Cantilever crane for aerial work platform and aerial work platform Download PDFInfo
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- CN214495634U CN214495634U CN202120741218.8U CN202120741218U CN214495634U CN 214495634 U CN214495634 U CN 214495634U CN 202120741218 U CN202120741218 U CN 202120741218U CN 214495634 U CN214495634 U CN 214495634U
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Abstract
The utility model discloses an aerial working platform is with cantilever crane and aerial working platform, include: the folding arm and the main arm are hinged to a first hinge point; one end of the first connecting piece is hinged with the folding arm; one end of the second connecting piece is hinged with the main arm; the other end of the second connecting piece is hinged with the first connecting piece at a second hinge point, and the folding arm, the main arm, the first connecting piece and the second connecting piece form a first four-bar linkage; and one end of the main arm luffing oil cylinder is hinged with the first connecting piece at the third hinged point, the other end of the main arm is hinged with the fourth hinged point, and an included angle between a connecting line of the third hinged point and the fourth hinged point and the main arm is larger than an included angle between a connecting line of the second hinged point and the fourth hinged point and the main arm. The amplitude-variable angle adjusting range of the main arm of the arm support for the aerial work platform is large, so that the work height of the work platform connected with the main arm can be expanded. The aerial work platform comprises the arm support for the aerial work platform, and the aerial work platform is wide in work range.
Description
Technical Field
The utility model relates to an aerial working platform's cantilever crane structure technical field, more specifically say, relate to a cantilever crane for aerial working platform. Furthermore, the utility model discloses still relate to an aerial working platform including above-mentioned cantilever crane for aerial working platform.
Background
The boom structure of the aerial work platform in the prior art generally comprises a folding arm, a main arm, a variable amplitude oil cylinder and two connecting rods, wherein the folding arm is hinged with the main arm, the cylinder end of the variable amplitude oil cylinder is hinged with the main arm, one ends of the two connecting rods are respectively hinged with the folding arm and the main arm, the other ends of the two connecting rods are hinged with a piston rod of the variable amplitude oil cylinder at one point, the folding arm, the main arm and the two connecting rods form a four-bar mechanism, and under the telescopic action of the variable amplitude oil cylinder, the angle adjustment of the main arm is realized, so that the height of the work platform is adjusted by adjusting the angle of the main arm.
However, due to the limitation of the lengths of the two connecting rods, the included angle between the luffing cylinder and the main arm is small, so that the angle adjustment range of the main arm is small, and the operation height range of the operation platform is limited.
In summary, how to expand the angle adjustment range of the main arm to expand the height adjustment range of the work platform is an urgent problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides an arm support for an aerial work platform, wherein the amplitude adjustment range of the main arm is large, so as to extend the working height of the work platform connected to the main arm.
Another object of the present invention is to provide an aerial work platform including the above arm support for an aerial work platform, wherein the work platform has a large work range, a low height when being stored, and a high height when being operated.
In order to achieve the above object, the present invention provides the following technical solutions:
an arm support for an aerial work platform, comprising:
the folding arm and the main arm are hinged to a first hinge point;
one end of the first connecting piece is hinged with the folding arm;
one end of the second connecting piece is hinged with the main arm; the other end of the second connecting piece is hinged with the first connecting piece at a second hinge point, and the folding arm, the main arm, the first connecting piece and the second connecting piece form a first four-bar linkage;
and one end of the main arm luffing oil cylinder is hinged with the first connecting piece at a third hinged point, the other end of the main arm is hinged with a fourth hinged point, and an included angle between a connecting line of the third hinged point and the fourth hinged point and the main arm is larger than an included angle between a connecting line of the second hinged point and the fourth hinged point and the main arm.
Preferably, the first connecting piece is a rod-shaped piece, the third hinge point is located at an end of the first connecting piece, and the second hinge point is located between two ends of the first connecting piece.
Preferably, the first connecting piece is a plate-shaped piece, and a hinge point of the first connecting piece and the folding arm, the second hinge point and the third hinge point are distributed in a triangular shape.
Preferably, one end, far away from the folding arm, of the main arm is hinged with a fly jib, and the fly jib is used for arranging a working platform.
Preferably, the method further comprises the following steps:
a third link hinged to the main arm;
a fourth connecting piece hinged with the fly arm;
a first leveling cylinder with one end hinged with the main arm;
the other end of the first leveling cylinder, the third connecting piece and the fourth connecting piece are hinged to a point, and the main arm, the fly arm, the third connecting piece and the fourth connecting piece form a second four-bar linkage mechanism.
Preferably, the method further comprises the following steps:
a fifth link hinged to the main arm;
the first connecting piece and the second connecting piece are hinged at a first hinge point, and the main arm, the fly arm, the first connecting piece and the second connecting piece form a first four-bar linkage;
and one end of the second leveling oil cylinder is hinged with the sixth connecting piece at a sixth hinged point, the other end of the second leveling oil cylinder is hinged with the main arm at a seventh hinged point, and an included angle between a connecting line of the sixth hinged point and the seventh hinged point and the main arm is larger than an included angle between a connecting line of the fifth hinged point and the seventh hinged point and the main arm.
Preferably, one end of the main arm close to the fly jib is provided with at least one section of first telescopic jib, and the free end of the first telescopic jib closest to the fly jib is hinged with the fly jib.
Preferably, one end of the folding arm close to the main arm is provided with at least one section of second telescopic arm, and the free end of the second telescopic arm closest to the main arm is hinged to the main arm at the first hinge point.
Preferably, the method further comprises the following steps:
the arm support fixing part is used for fixedly arranging a rotary table of the aerial work platform, and one end of the folding arm, which is far away from the main arm, is hinged with the arm support fixing part;
and one end of the folding arm amplitude-variable oil cylinder is hinged with the folding arm, and the other end of the folding arm amplitude-variable oil cylinder is hinged with the arm support fixing part.
An aerial work platform comprises a bottom frame, a rotary table arranged on the bottom frame, an arm support connected with the rotary table and a work platform connected with the arm support, wherein the arm support is any one of the arm supports for the aerial work platform.
The utility model provides a cantilever crane for aerial working platform, because the line of third hinge point and fourth pin joint and the contained angle between the main arm are greater than the line of second hinge point and fourth pin joint and the contained angle between the main arm, consequently, compare in prior art two connecting rods and become width of cloth hydro-cylinder three and articulate in a bit, the utility model discloses a change the main arm and become the articulated position between width of cloth hydro-cylinder and the first connecting piece, make it not coincide with the articulated position between second connecting piece and the first connecting piece, avoid making the main arm become the articulated position of width of cloth hydro-cylinder and first connecting piece and the contained angle undersize between the main arm because of the main arm becomes the length restriction that the articulated position of width of cloth hydro-cylinder and first connecting piece received the second connecting piece.
That is, compare in prior art, the utility model provides a cantilever crane for aerial working platform has increased the main arm and has become the contained angle between hydro-cylinder and the main arm in other words to become when the hydro-cylinder of amplitude of main arm is flexible, the displacement increase that the messenger decomposed the perpendicular to main arm direction, also promptly, make the amplitude angle scope increase of main arm, consequently, the lifting height of the work platform who locates the main arm has been promoted, the working range of work platform has been expanded, make the main arm withdraw the time highly low, the main arm is high when expanding, convenient collection, the operation on a large scale of transportation and great height.
In addition, because the included angle between the connecting line of the third hinge point and the fourth hinge point and the main arm is larger than the included angle between the connecting line of the second hinge point and the fourth hinge point and the main arm, the distance from the first hinge point to the connecting line between the third hinge point and the fourth hinge point is larger than the distance from the first hinge point to the connecting line between the second hinge point and the fourth hinge point, compared with the prior art that two connecting rods are hinged with the amplitude-variable oil cylinder at one point, the moment arm of force of the amplitude-variable oil cylinder of the main arm is increased, therefore, under the requirement of the same moment, the force required to be provided by the amplitude-variable oil cylinder of the main arm can be reduced, and the size of the amplitude-variable oil cylinder of the main arm can be reduced.
The utility model provides an aerial working platform, including above-mentioned cantilever crane for aerial working platform, have above-mentioned beneficial effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an arm support for an aerial work platform according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a force arm schematic diagram of a main arm luffing cylinder of the arm support for the aerial work platform shown in FIG. 1;
fig. 4 is a schematic structural diagram of an aerial work platform according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of the aerial work platform shown in FIG. 4 when stowed;
fig. 6 is a schematic view of the amplitude variation angle range of the main arm of the aerial work platform shown in fig. 4.
The reference numerals in fig. 1 to 6 are as follows:
101 is a folding arm, 102 is a main arm, 103 is a first connecting piece, 104 is a second connecting piece, 105 is a main arm luffing cylinder, 106 is a fly arm, 107 is a third connecting piece, 108 is a fourth connecting piece, 109 is a first leveling cylinder, 110 is a first telescopic arm, 111 is a second telescopic arm, 112 is an arm support fixing part, 113 is a folding arm luffing cylinder, O1Is a first hinge point, O2Is a second hinge point, O3Is a third hinge point, O4Is a fourth hinge point, L1Is the distance L from the first hinge point to the connecting line between the third hinge point and the fourth hinge point2The distance from the first hinge point to a connecting line between the second hinge point and the fourth hinge point, alpha is the amplitude variation angle of the main arm, 100 is the arm support for the aerial work platform, 200 is the underframe, 300 is the rotary table, and 400 is the work platform.
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 efforts belong to the protection scope of the present invention.
The core of the utility model is to provide an aerial working platform uses cantilever crane, the change width of cloth angle of its main arm adjustment scope is big to the operation height of the operation platform that the extension links to each other with the main arm. The other core of the utility model is to provide an aerial working platform comprising the arm support for the aerial working platform, the working range of the working platform is large, the working platform has lower height during collection, and the working platform has higher height during operation.
Referring to fig. 1 to 6, fig. 1 is a schematic structural diagram of an arm support for an aerial work platform according to an embodiment of the present invention; FIG. 2 is an enlarged view of a portion of FIG. 1; FIG. 3 is a force arm schematic diagram of a main arm luffing cylinder of the arm support for the aerial work platform shown in FIG. 1; fig. 4 is a schematic structural diagram of an aerial work platform according to an embodiment of the present invention; FIG. 5 is a schematic structural view of the aerial work platform shown in FIG. 4 when stowed; fig. 6 is a schematic view of the amplitude variation angle range of the main arm of the aerial work platform shown in fig. 4.
The utility model provides an arm support for aerial working platform, become width of cloth hydro-cylinder 105 including roll over arm 101, main arm 102, first connecting piece 103, second connecting piece 104 and main arm.
Specifically, the folding arm 101 and the main arm 102 are hinged at a first hinge point O1One end of the first connecting piece 103 is hinged with the folding arm 101, one end of the second connecting piece 104 is hinged with the main arm 102, and the other end of the second connecting piece 104 is hinged with the first connecting piece 103 at a second hinge point O2One end of the main arm luffing cylinder 105 is hinged to the third hinge point O with the first connecting member 1033The other end of the main arm luffing cylinder 105 is hinged with the main arm 102 at a fourth hinge point O4Third hinge point O3And a fourth hinge point O4Is larger than the second hinge point O2And a fourth hinge point O4And the angle between the line connecting the main arms 102.
The folding arm 101, the main arm 102, the first connecting piece 103 and the second connecting piece 104 form a first four-bar linkage mechanism, and the angle of the main arm 102 is adjusted under the action of the main arm luffing cylinder 105.
It can be understood that when the main arm luffing cylinder 105 extends, the main arm 102 is driven to rotate relative to the folding arm 101, so that the main arm 102 is opened, and when the main arm luffing cylinder 105 retracts, the main arm 102 is driven to rotate in a direction close to the folding arm 101, so that the main arm 102 retracts. When the main arm luffing cylinder 105 retracts to the shortest length, the main arm 102 has the smallest angle; when the main arm luffing cylinder 105 is extended to a maximum length, the main arm 102 has a maximum angle. Work platform 400 provided to main arm 102 is located at the lowest position when main arm 102 has the smallest angle, and work platform 400 provided to main arm 102 is located at the highest position when main arm 102 has the largest angle. Therefore, the angle of the main arm 102 is adjusted between the minimum angle and the maximum angle during the extension and retraction of the main arm luffing cylinder 105.
More importantly, the utility model discloses in, because second connecting piece 104 and first connecting piece 103 articulate in second pin joint O2The main arm luffing cylinder 105 is hinged with the first connecting piece 103 at a third hinge joint point O3The main arm luffing cylinder 105 is hinged with the main arm 102 at a fourth hinge point O4And the third hinge point O3And a fourth hinge point O4Is larger than the second hinge point O2And a fourth hinge point O4The line of and main arm 102 between contained angle, consequently, compare two connecting rods and become width of cloth hydro-cylinder three and articulate in a bit among the prior art, the utility model discloses a change the main arm and become the articulated position between width of cloth hydro-cylinder 105 and the first connecting piece 103, make it not coincide with the articulated position between second connecting piece 104 and the first connecting piece 103, avoid making the main arm become width of cloth hydro-cylinder 105 and the articulated position of first connecting piece 103 and the contained angle between main arm 102 undersize because of the main arm becomes the articulated position that width of cloth hydro-cylinder 105 and first connecting piece 103 receive the length restriction of second connecting piece 104.
That is, compare in prior art, the utility model provides a cantilever crane for aerial working platform has increased the main arm and has become the contained angle between hydro-cylinder 105 and the main arm 102 equivalent to, thereby when main arm becomes the hydro-cylinder 105 flexible, make the displacement increase of decomposing perpendicular to main arm 102 direction, that is, make the change width of cloth angle scope increase of main arm 102, consequently, the lifting height of the work platform 400 who locates main arm 102 has been promoted, the working range of work platform 400 has been expanded, make the main arm 102 withdraw highly low, the height when main arm 102 expandes is high, convenient collection, transportation and the operation on a large scale of great height.
In addition, due to the third hinge point O3And a fourth hinge point O4Is larger than the second hinge point O2And a fourth hinge point O4And the main arm 102, so that, as shown in fig. 3, the first hinge point O1To the third hinge point O3And a fourth hinge point O4Distance L between the connecting lines1Is larger than the first hinge point O1To the second hinge point O2And a fourth hinge point O4Distance L between the connecting lines2Compared with the prior art that the two connecting rods and the luffing cylinder are hinged at one point, the luffing cylinder of the main arm 105 has the same moment arm, so that the force required to be provided by the luffing cylinder 105 of the main arm can be reduced under the requirement of the same moment, and the size of the luffing cylinder 105 of the main arm can be reduced.
It should be noted that, in this embodiment, the specific structure of the first connecting member 103 is not limited as long as the above-described connection manner can be implemented.
Preferably, in the above embodiment, the first connecting member 103 is a rod-shaped member, and the third hinge point O3At the end of the first connecting part 103, a second hinge point O2Between the two ends of the first connector 103.
As shown in fig. 1 and 3, compared to the prior art in which three of the two connecting rods and the luffing cylinder are hinged at one point, this embodiment is equivalent to hinging the hinged position of the luffing cylinder 105 of the main arm and the first connecting member 103 from the second hinge point O2Is shifted to the third hinge point O to the outside3Therefore, the included angle between the main arm luffing cylinder 105 and the main arm 102 is increased, the structure is simple, and the implementation is convenient.
Of course, it is also possible to adopt a configuration in which the first connecting member 103 is a plate-shaped member, and the hinge point between the first connecting member 103 and the folding arm 101 and the second hinge point O are the same as those of the above-described embodiment2And a third hinge point O3The three parts are distributed in a triangle.
Thus, the third hinge point O is favorably and reasonably arranged3And a second hinge point O2Phase of (A) betweenThe relative positional relationship is such that there is an appropriate angle between the main arm luffing cylinder 105 and the main arm 102, i.e., it is convenient to adjust the angle between the main arm luffing cylinder 105 and the main arm 102.
In addition, in each of the above embodiments, the specific structure of the second connecting member 104 is not limited, and preferably, the second connecting member 104 is a rod-shaped member.
In addition, in order to adjust the position of the work platform 400 with respect to the main arm 102, in addition to the above embodiment, one end of the main arm 102 away from the knuckle arm 101 is hinged to the fly jib 106, and the fly jib 106 is used to set the work platform 400.
That is, in the present embodiment, the fly jib 106 is provided at the end of the main arm 102 away from the knuckle boom 101, and the work platform 400 is provided on the fly jib 106, so that the position of the work platform 400 can be adjusted by changing the position of the fly jib 106 relative to the main arm 102, and the work platform 400 can have a suitable spatial position regardless of the angle of the main arm 102, and thus work can be facilitated.
In this embodiment, the specific structure for adjusting the relative position of the main arm 102 and the fly jib 106 is not limited, as long as the fly jib 106 can rotate relative to the main arm 102 to adjust the position of the work platform 400.
As a preferable scheme, on the basis of the above embodiment, the leveling device further includes a third connecting member 107, a fourth connecting member 108, and a first leveling cylinder 109.
Specifically, the third connecting element 107 is hinged to the main arm 102, the fourth connecting element 108 is hinged to the fly jib 106, one end of the first leveling cylinder 109 is hinged to the main arm 102, the other end of the first leveling cylinder 109, the third connecting element 107 and the fourth connecting element 108 are hinged to a point, and the main arm 102, the fly jib 106, the third connecting element 107 and the fourth connecting element 108 form a second four-bar linkage.
It will be appreciated that adjustment of the angle of the fly arm 106 can be achieved by the first leveling cylinder 109.
When the first leveling cylinder 109 extends, the fly jib 106 is driven to rotate relative to the main arm 102, so that the fly jib 106 is opened, and when the first leveling cylinder 109 shortens, the fly jib 106 is driven to rotate in a direction close to the main arm 102, so that the fly jib 106 retracts.
Specifically, when the main arm luffing cylinder 105 extends, the first leveling cylinder 109 retracts, so that the fly jib 106 can be ensured to move along with the expansion of the main arm 102, and at the moment, the movement of the main arm 102 under the action of the main arm luffing cylinder 105 and the movement of the fly jib 106 under the action of the first leveling cylinder 109 form a compound movement of the fly jib 106, so that the fly jib 106 can be kept in a horizontal state no matter what height the fly jib 106 is.
Similarly, when the main arm luffing cylinder 105 retracts, the first leveling cylinder 109 extends, so that the fly jib 106 can be ensured to move along with the retraction of the main arm 102, and at the moment, the movement of the main arm 102 under the action of the main arm luffing cylinder 105 and the movement of the fly jib 106 under the action of the first leveling cylinder 109 form a compound movement of the fly jib 106, so that the fly jib 106 can be kept in a horizontal state no matter what height.
That is, the first leveling cylinder 109 cooperates with the main arm luffing cylinder 105 to keep the fly jib 106, that is, the work platform 400, horizontal.
Therefore, in the embodiment, the first four-bar linkage moves under the action of the main arm luffing cylinder 105, and the second four-bar linkage moves under the action of the first leveling cylinder 109 in a matching manner, so that the adjustment of the large luffing angle of the main arm 102 is realized, and the flying arm 106 can drive the work platform 400 to level all the time.
This embodiment may increase the range of adjustment while avoiding interference, as compared to merely articulating main arm 102 with flyweight 106 and providing a leveling cylinder between main arm 102 and flyweight 106 to drive flyweight 106 in motion relative to main arm 102 to achieve the goal of leveling work platform 400.
In view of another preferred scheme for realizing the adjustment of the relative position of the main arm 102 and the fly jib 106, on the basis of the above embodiment, a fifth connecting element, a sixth connecting element and a second leveling cylinder are further included.
Specifically, the fifth connecting element is hinged to the main arm 102, the sixth connecting element is hinged to the fly arm 106, the fifth connecting element is hinged to the sixth connecting element at a fifth hinge point, and the main arm 102, the fly arm 106, the fifth connecting element and the sixth connecting element form a third four-bar linkage. One end of the second leveling oil cylinder is hinged to a sixth hinged point through the sixth connecting piece, the other end of the second leveling oil cylinder is hinged to a seventh hinged point through the main arm 102, and an included angle between a connecting line of the sixth hinged point and the seventh hinged point and the main arm 102 is larger than an included angle between a connecting line of the fifth hinged point and the seventh hinged point and the main arm 102.
It will be appreciated that the third four bar linkage is moved by the second leveling cylinder to effect adjustment of the fly jib 106 relative to the main jib 102.
Since the included angle between the connecting line of the sixth hinge point and the seventh hinge point and the main arm 102 is greater than the included angle between the connecting line of the fifth hinge point and the seventh hinge point and the main arm 102, compared with the case where the other end of the first leveling cylinder 109, the third connecting element 107 and the fourth connecting element 108 are hinged at one point in the previous embodiment, the adjustment range of the fly arm 106 can be further increased in this embodiment, and meanwhile, the force arm of the second leveling cylinder is increased, so that the force required to be provided by the second leveling cylinder is reduced, and the size of the second leveling cylinder can be further reduced.
It should be noted that, in the above embodiments, specific structures of the third connecting member 107, the fourth connecting member 108, the fifth connecting member, and the sixth connecting member are not limited, and the third connecting member 107, the fourth connecting member 108, the fifth connecting member, and the sixth connecting member may be rod-shaped members, or plate-shaped members, respectively, and those skilled in the art may select the connecting members according to actual needs.
In addition, in order to increase the length of main arm 102 and save space when retracting main arm 102, on the basis of the above-mentioned embodiment, at least one section of first telescopic arm 110 is provided at one end of main arm 102 close to flyweight 106, and the free end of first telescopic arm 110 closest to flyweight 106 is hinged to flyweight 106.
When first telescopic boom 110 is extended, the length of main boom 102 may be increased in order to increase the height at which work platform 400 is raised; when first telescoping boom 110 is retracted, the length of main boom 102 may be shortened for storage and transport.
It is understood that the main arm 102 incorporates therein a first telescopic cylinder for driving the first telescopic arm 110 to be telescopic.
It should be noted that the specific number of the first telescopic arms 110 is not limited in this embodiment, for example, as shown in fig. 1, the number of the first telescopic arms 110 is preferably two.
In addition, in order to increase the length of the folding arm 101 and save space when retracting the folding arm 101, based on the above-mentioned embodiment, at least one section of the second telescopic arm 111 is disposed at the end of the folding arm 101 close to the main arm 102, and the free end of the second telescopic arm 111 closest to the main arm 102 is hinged to the main arm 102 at the first hinge point O1。
That is, when the second telescopic arms 111 are all extended, the length of the folding arm 101 can be increased so as to increase the height at which the main arm 102 is lifted; when the second telescopic arms 111 are both retracted, the length of the folding arm 101 can be shortened for storage and transportation.
It is understood that the folding arm 101 incorporates a second telescopic cylinder for driving the second telescopic arm 111 to extend and retract.
It should be noted that the specific number of the second telescopic arms 111 is not limited in this embodiment, for example, as shown in fig. 1, the number of the second telescopic arms 111 is preferably two.
In addition, in order to facilitate the storage of the articulated arm 101 and increase the lifted height of the main arm 102, the articulated arm further includes an arm support fixing part 112 and an articulated arm luffing cylinder 113 in addition to the above embodiments.
When the cantilever crane fixing part 112 is used, the cantilever crane fixing part 112 is fixedly arranged on the rotary table 300 of the aerial work platform, so that the cantilever crane for the aerial work platform is integrally fixed on the aerial work platform.
One end of the folding arm 101, which is far away from the main arm 102, is hinged to the arm support fixing part 112, one end of the folding arm variable amplitude oil cylinder 113 is hinged to the folding arm 101, and the other end of the folding arm variable amplitude oil cylinder is hinged to the arm support fixing part 112.
Under the action of the folding arm variable amplitude oil cylinder 113, the folding arm 101 is driven to rotate relative to the arm support fixing part 112, so that the folding arm 101 is unfolded or retracted, and the height of the main arm 102 can be increased when the folding arm 101 is unfolded; when the folding arm 101 is retracted, it is convenient for storage and transportation.
It should be noted that the boom fixing part 112 may be a structure of the turntable 300 of the aerial work platform, that is, during installation, one end of the folding arm 101 away from the main arm 102 is directly hinged to the turntable 300 of the aerial work platform, one end of the folding arm luffing cylinder 113 is hinged to the folding arm 101, and the other end is hinged to the turntable 300.
Except that above-mentioned cantilever crane for aerial working platform, the utility model discloses still provide an aerial working platform, this aerial working platform includes chassis 200, revolving stage 300, cantilever crane and work platform 400, and on chassis 200 was located to revolving stage 300, the one end of cantilever crane was linked to each other with revolving stage 300, and the other end was used for setting up work platform 400, and wherein, this cantilever crane was the cantilever crane for aerial working platform that the aforesaid any one embodiment disclosed.
It should be noted that, for the specific structures of the base frame 200, the turntable 300 and the work platform 400, reference is made to the prior art, and detailed description thereof is omitted.
The aerial work platform adopts the arm support for the aerial work platform disclosed by any one of the embodiments, so that the aerial work platform is wide in work range, low in height during collection and high in height during work.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above is to the utility model provides an aerial working platform is with cantilever crane and aerial working platform introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The utility model provides a cantilever crane for aerial working platform which characterized in that includes:
a folding arm (101) and a main arm (102) hinged at a first hinge point (O)1)；
A first connecting piece (103) with one end hinged with the folding arm (101);
a second connecting member (104) having one end hinged to the main arm (102); the other end of the second connecting piece (104) is hinged with the first connecting piece (103) at a second hinge point (O)2) The folding arm (101), the main arm (102), the first connector (103) and the second connector (104) form a first four-bar linkage;
a main arm luffing cylinder (105) having one end hinged to the third hinge point (O) with the first connecting member (103)3) The other end is hinged with the main arm (102) at a fourth hinged point (O)4) Said third hinge point (O)3) With said fourth hinge point (O)4) Is larger than the second hinge point (O)2) With said fourth hinge point (O)4) And the angle between the main arm (102).
2. Arm support for aerial work platforms according to claim 1, characterised in that the first connecting piece (103) is a rod-like piece and the third articulation point (O)3) At the end of the first connecting piece (103), the second hinge point (O)2) Is positioned between the two ends of the first connecting piece (103).
3. Arm support for aerial work platforms according to claim 1, characterized in that the first connecting piece (103) is a plate-shaped piece, and the first connecting piece (103) is hinged to the folding arm (101) and the second hinge point (O)2) And the thirdHinge point (O)3) Is distributed in a triangle.
4. The boom for the aerial work platform as claimed in claim 1, characterized in that the end of the main arm (102) remote from the folding arm (101) is hinged with a flying arm (106), and the flying arm (106) is used for arranging a work platform (400).
5. The boom for the aerial work platform as claimed in claim 4, further comprising:
a third connecting element (107) articulated to said main arm (102);
a fourth link (108) articulated to the fly arm (106);
a first leveling cylinder (109) with one end hinged with the main arm (102);
the other end of the first leveling cylinder (109), the third connecting piece (107) and the fourth connecting piece (108) are hinged at one point, and the main arm (102), the fly arm (106), the third connecting piece (107) and the fourth connecting piece (108) form a second four-bar linkage mechanism.
6. The boom for the aerial work platform as claimed in claim 4, further comprising:
a fifth linkage articulated to the main arm (102);
a sixth link hinged to the fly arm (106), the fifth link being hinged to a fifth hinge point with the sixth link, the main arm (102), the fly arm (106), the fifth link, and the sixth link forming a third four bar linkage;
and one end of the second leveling oil cylinder is hinged with the sixth connecting piece at a sixth hinged point, the other end of the second leveling oil cylinder is hinged with the main arm (102) at a seventh hinged point, and an included angle between a connecting line of the sixth hinged point and the seventh hinged point and the main arm (102) is larger than an included angle between a connecting line of the fifth hinged point and the seventh hinged point and the main arm (102).
7. Boom for aerial work platforms according to any of claims 4-6, characterized in that the end of the main arm (102) close to the fly jib (106) is provided with at least one section of a first telescopic boom (110), and the free end of the first telescopic boom (110) closest to the fly jib (106) is articulated to the fly jib (106).
8. Arm support for aerial work platforms according to any of claims 1-6, characterized in that the folding arm (101) is provided with at least one second telescopic arm (111) at the end close to the main arm (102), and the free end of the second telescopic arm (111) closest to the main arm (102) is hinged to the main arm (102) at the first hinge point (O)1)。
9. The boom for an aerial work platform according to any one of claims 1 to 6, further comprising:
the arm support fixing part (112) is used for being fixedly arranged on a rotary table (300) of the aerial work platform, and one end, far away from the main arm (102), of the folding arm (101) is hinged to the arm support fixing part (112);
and one end of the folding arm amplitude-variable oil cylinder (113) is hinged with the folding arm (101), and the other end of the folding arm amplitude-variable oil cylinder is hinged with the arm support fixing part (112).
10. An aerial work platform, comprising a base frame (200), a turntable (300) arranged on the base frame (200), an arm support connected with the turntable (300), and a work platform (400) connected with the arm support, wherein the arm support is the arm support (100) for the aerial work platform according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120741218.8U CN214495634U (en) | 2021-04-12 | 2021-04-12 | Cantilever crane for aerial work platform and aerial work platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120741218.8U CN214495634U (en) | 2021-04-12 | 2021-04-12 | Cantilever crane for aerial work platform and aerial work platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892550A (en) * | 2023-09-08 | 2023-10-17 | 临工重机股份有限公司 | Workbench leveling method |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892550A (en) * | 2023-09-08 | 2023-10-17 | 临工重机股份有限公司 | Workbench leveling method |
| CN116892550B (en) * | 2023-09-08 | 2023-12-19 | 临工重机股份有限公司 | Workbench leveling method |
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