Summary of the invention
For addressing the above problem the present invention is proposed, and the invention provides a kind of boom structure, have the arm method that rises of hoisting crane and this boom structure of this boom structure, by this boom structure and an arm method, greatly reduced arm assembling, dismounting, played arm and put the required space of arm, reduced the time of aforesaid operations and be conducive to the save operation cost.
According to an aspect of the present invention, provide a kind of boom structure, described boom structure comprises: principal arm, first end are connected to the main body of vehicle; Auxiliary, described auxiliary are connected to the second end of described principal arm rotationally at first end; The auxiliary front strut is connected to the first end of described auxiliary at first end; The auxiliary rear pole is connected to the second end of described principal arm at first end; The luffing rope is connected between the second end of the second end of described auxiliary front strut and described auxiliary rear pole; And first sway bar, be connected near the first end of described auxiliary and between the described auxiliary front strut, to support described auxiliary front strut.
Further, described boom structure also comprises: carriage is installed on the second end of described principal arm, optionally to support described luffing rope.
Further, described boom structure also comprises: the principal arm arm-tie, and an end is connected to described vehicle, and the other end is connected to the second end of described principal arm; Arm-tie before the auxiliary, an end is connected near the second end of described auxiliary, and the other end is connected to described auxiliary front strut; And arm-tie behind the auxiliary, an end is connected near the first end of described principal arm, and the other end is connected to described auxiliary rear pole.
Further, described auxiliary comprises: the coxopodite arm is positioned at the first end of described auxiliary; The epimerite arm is positioned at the second end of described auxiliary and is connected with suspension hook; And at least one joint intermediate arm, be connected between described coxopodite arm and the described epimerite arm.
Further, described boom structure also comprises: the second sway bar is connected near the second end of described principal arm and between the described auxiliary rear pole, to support described auxiliary rear pole; And the auxiliary sway bar, an end is connected to the second end of described principal arm, and the other end is free end, and this free end supports described auxiliary slidably.
Further, described carriage comprises the first strut bar and the second strut bar, described the first strut bar and described the second strut bar are connected to respectively the diverse location place of the second end of described principal arm at first end separately, and described the first strut bar and described the second strut bar at separately the second end along connected to each other away from the direction of described principal arm.
Further, described boom structure also comprises: the second end that draw gear, described draw gear optionally are connected to described auxiliary is with can be with described auxiliary towards the assembling position tractive, and in described assembling position, described auxiliary is stacked and placed on described principal arm below.
Further, described draw gear is hoisting mechanism.
According to a further aspect in the invention, provide a kind of hoisting crane, described hoisting crane comprises having the as mentioned above boom structure of feature.
In accordance with a further aspect of the present invention, provide a kind of arm method that rises of boom structure, described boom structure comprises principal arm and auxiliary, and described method comprises:
A) first end of described principal arm is connected to the main body of hoisting crane, the principal arm arm-tie is connected between the second end of described hoisting crane and described principal arm with described principal arm pull-up to apart from the ground certain distance;
B) below described principal arm, the first end of described auxiliary is pivoted to the second end of described principal arm, so that described auxiliary is in the assembling position that is stacked in described principal arm below;
C) first end of auxiliary rear pole is connected to the second end of described principal arm, the first end of auxiliary front strut is connected to the first end of described auxiliary, and the luffing rope is connected between the second end of the second end of described auxiliary front strut and described auxiliary rear pole (22);
D) be connected auxiliary post-tensioning plate near the first end of described principal arm with between the described auxiliary rear pole;
E) continue the described principal arm of pull-up, loosen described luffing rope, make the second end of described auxiliary front strut ground that hangs, the first sway bar is connected near the first end of described auxiliary and between the described auxiliary front strut, described the first sway bar is used for supporting described auxiliary front strut;
F) continue the described principal arm of pull-up, arm-tie before the auxiliary is connected between second end and described auxiliary front strut of described auxiliary; And
G) continue the described principal arm of pull-up, tighten up described luffing rope, make described auxiliary be in Hoisting Position to carry out lifting operation.
Further, described step c) also comprise: installation bracket on the second end of described principal arm, optionally to support described luffing rope.
Further, described step f) also comprise: be connected the second sway bar between described principal arm and described auxiliary rear pole, described the second sway bar supports described auxiliary rear pole and prevents that described auxiliary rear pole from tilting; And connecting the auxiliary sway bar at the second end of described principal arm, described auxiliary sway bar supports described auxiliary slidably by its free end.
Boom structure according to the present invention has reached the arm method, can successfully variable-amplitude auxiliary arm be stacked and placed on below principal arm, and variable-amplitude auxiliary arm can be at the assembling position below the principal arm and carry out pivoting between the Hoisting Position of lifting operation, thereby when realizing higher lifting (lifting) height, effectively reduced the assembling boom structure and operated the required space of boom structure, and because the assembling of boom structure, play arm, putting arm and disassembling section just can finish smoothly at Active workings, thereby need not before operation, hoisting crane to be transferred to other places, save to a great extent the operating time and be conducive to the save operation cost.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, take crawler crane boom structure of the present invention and operation thereof as example describes in detail.
Fig. 1 shows the crawler crane that has according to the boom structure of the embodiment of the invention, and wherein, this boom structure is in folded state, and variable-amplitude auxiliary arm is positioned at the principal arm below collapsiblely; And Fig. 2 shows the crawler crane that has according to the boom structure of the embodiment of the invention, and wherein, this boom structure is in the lifting state, and variable-amplitude auxiliary arm turns to the hoisting height place of hoisting crane away from crane main body.
Referring to Fig. 1 and Fig. 2, comprise according to the boom structure of the embodiment of the invention: principal arm 10, it is connected to the main body of hoisting crane at first end; And auxiliary 20, be positioned at collapsibly principal arm 10 belows and also can rotate around principal arm 10.Particularly, auxiliary 20 is connected to rotationally the second end of principal arm 10 and auxiliary 20 at first end and has the assembling position (as shown in Figure 1) that is positioned at below the principal arm 10 and the Hoisting Position (as shown in Figure 2) that carries out lifting operation, and auxiliary 20 can pivot between Hoisting Position and assembling position around the second end of principal arm 10.
Principal arm arm-tie 12 at one end is connected to the mast 32 of hoisting crane and is connected to the second end of principal arm 10 at the other end.The first end place of auxiliary 20 is connected with auxiliary front strut 23, is connected with auxiliary rear pole 22 at the second end place of principal arm 10, and, between auxiliary front strut 23 and auxiliary rear pole 22, be connected with variable-amplitude steel wire rope (luffing rope) 24.Arm-tie 29 at one end is connected to the second end of auxiliary 20 and is connected to auxiliary front strut 23 at the other end before the auxiliary, and arm-tie 28 at one end is connected near the first end of principal arm 10 and at the other end and is connected to auxiliary rear pole 22 behind the auxiliary.
In the boom structure of the embodiment of the invention, especially, at the second end of principal arm 10 carriage 26 is installed, at auxiliary 20 during principal arm 10 rotates, carriage 26 can support variable-amplitude steel wire rope 24, is involved in the rotation of interfering auxiliary 20 in principal arm 10 or the auxiliary 20 to avoid variable-amplitude steel wire rope 24.This will be discussed in more detail below.
In the boom structure of the embodiment of the invention, also especially, be connected with sway bar 232 near the first end of auxiliary 20 and between the auxiliary front strut 23, with support auxiliary front strut 23 and prevent auxiliary front strut 23 auxiliary 20 during principal arm 10 rotates since gravity and downward-sloping, this will be discussed in more detail below.
In addition, be connected with sway bar 222 near the second end of principal arm 10 and between the auxiliary rear pole 22, to support auxiliary rear pole 22; And the second end at principal arm 10 is connected with auxiliary sway bar 25, and the free end of this auxiliary sway bar 25 contacts and support auxiliary 20 slidably.
As will be understood by the skilled person in the art, auxiliary 20 can adopt the form of the variable-amplitude auxiliary arm of single oil cylinder, and shown in Fig. 3 c, auxiliary 20 can comprise: the coxopodite arm 202 that is positioned at the first end of auxiliary 20; Be positioned at the epimerite arm 206 of the second end of auxiliary 20; And at least one joint intermediate arm 204 between coxopodite arm 202 and epimerite arm 206.Suspension hook 208 can be connected to by hoist rope 209 (shown in Fig. 7 a) the epimerite arm 206 of auxiliary.
In addition, in this embodiment, shown in Fig. 7 b, this boom structure also can comprise draw gear 40, this draw gear 40 selectively is connected to the second end of auxiliary 20, with this auxiliary 20 towards assembling position tractive shown in Figure 1, thereby auxiliary 20 is placed on principal arm 10 belows with folding mode.Preferably, this draw gear 40 can be hoisting mechanism.
The below describes operating process according to the boom structure of the embodiment of the invention in detail with reference to Fig. 3 a-3h, Fig. 4-6 and Fig. 7 a-7f, and wherein, the assembling that Fig. 3 a to Fig. 3 h shows boom structure illustrated in figures 1 and 2 has reached the arm process; Fig. 4 to Fig. 7 shows respectively the partial enlarged drawing of Fig. 3 d and Fig. 3 e; And Fig. 7 a to Fig. 7 f show boom structure illustrated in figures 1 and 2 put arm and unloading process.
Shown in Fig. 3 a, the first end of principal arm 10 is connected to crane main body, principal arm arm-tie 12 is connected between the second end of the mast 32 of hoisting crane and principal arm 10.
Shown in Fig. 3 b, by mast 32 principal arm arm-tie 12 is mentioned, so that principal arm 10 keeps certain distance with ground, then below principal arm 10, the coxopodite arm 202 that will be positioned at auxiliary 20 first ends is pivoted to the second end of principal arm 10, so that auxiliary 20 is in the assembling position that is stacked in principal arm 10 belows.
Shown in Fig. 3 c, next, intermediate arm 204 and the epimerite arm 206 of auxiliary 20 is installed successively.At this moment, auxiliary 20 is in assembling position, wherein, this auxiliary 20, particularly, coxopodite arm 202 can carry out around this second end of principal arm 10 pivoting between the Hoisting Position (as shown in Figure 2) of lifting operation and the assembling position (Fig. 1).
For another example shown in Fig. 3 d, one end of auxiliary rear pole 22 is connected on the second end of principal arm 10, one end of auxiliary front strut 23 is connected on the first end of auxiliary 20, then variable-amplitude steel wire rope 24 is connected between the other end of the other end of auxiliary front strut 23 and auxiliary rear pole 22.Fig. 4 shows the partial enlarged drawing of Fig. 3 d, wherein the clear relation that shows between auxiliary front strut 23, auxiliary rear pole 22 and the variable-amplitude steel wire rope 24.
Then, shown in Fig. 3 e, be connected auxiliary post-tensioning plate 28 near the first end of principal arm 10 with between the auxiliary rear pole 22; Between principal arm 10 and auxiliary rear pole 22, be connected sway bar 222, to support auxiliary rear pole 22 and to prevent that auxiliary rear pole 22 from toppling over towards principal arm 10; The second end at principal arm 10 connects auxiliary sway bar 25, and the free end of this auxiliary sway bar 25 can contact and support auxiliary 20 slidably; And the second end installation bracket 26 at principal arm.Fig. 5 is the partial enlarged drawing of Fig. 3 e, wherein clear carriage 26 and sway bar 222 and the sway bar 25 of showing.In this embodiment, shown in Fig. 6 (another partial enlarged drawing of Fig. 3 e), carriage 26 comprises the first strut bar 262 and the second strut bar 264, the first strut bar 262 and the second strut bar 264 are connected to respectively the second end diverse location place of principal arm 10 at first end, and connected to each other away from the direction of principal arm 10 on the second end edge, the second end of the first strut bar 262 and the second strut bar 264 and principal arm 10 consists of a stable triangular structure thus, carriage 26 is used for optionally supporting variable-amplitude steel wire rope 24, and this will describe in detail below.
During this period, also suspension hook 208 can be connected to epimerite arm 206 by rising steel rope.
Then, shown in Fig. 3 f, mention principal arm 10, loosen the variable-amplitude steel wire rope 24 of auxiliary 20 by the hoisting mechanism (not shown), the downward-sloping and ground that hangs of an end that is connected with variable-amplitude steel wire rope 24 that makes auxiliary front strut 23.Then, be connected sway bar 232 near the first end of auxiliary 20 with between the auxiliary front strut 23, to support auxiliary front strut 23.
Get off again, shown in Fig. 3 g, continue to mention principal arm 10, loosen the variable-amplitude steel wire rope 24 of auxiliary 20, between the second end of auxiliary 20 and auxiliary front support rod 23, be connected auxiliary before arm-tie 29.In the boom structure of the embodiment of the invention, shown in Fig. 3 g, because the second end at principal arm 10 is provided with carriage 26, thereby long variable-amplitude steel wire rope 24 can support and can not interfere with principal arm 10 and auxiliary 20 by carriage 26, and this makes it possible to successfully operate auxiliary 20 so that auxiliary 20 rotates around principal arm 10.
Then, shown in Fig. 3 h, carried out arm operation, particularly, continued to mention principal arm 10 and variable-amplitude steel wire rope 24 is tightened up gradually, boom structure plays arm to as shown in Figure 2 Hoisting Position the most at last.Same shown in Fig. 3 h, because the second end at principal arm 10 is provided with carriage 26, thereby long variable-amplitude steel wire rope 24 can support and can not interfere with principal arm 10 and auxiliary 20 by carriage 26, and this makes it possible to successfully operate auxiliary 20 so that auxiliary 20 rotates around principal arm 10.
After the lifting operation of hoisting crane is finished, can put arm and dismounting according to what finish boom structure shown in Fig. 7 a to Fig. 7 f.
Particularly, at first, shown in Fig. 7 a, by operation mast 32 principal arm 10 of loweing, loosen variable-amplitude steel wire rope 24, so that auxiliary 20 is near the ground around the second termination that principal arm 10 turns to auxiliary 20, loosen the hoist rope of suspension hook 208, so that suspension hook 208 kiss the earths and being removed.During this period, because the second end at principal arm 10 is provided with carriage 26, thereby long variable-amplitude steel wire rope 24 can support and can not interfere with principal arm 10 and auxiliary 20 by carriage 26, and this makes it possible to successfully operate auxiliary 20 so that auxiliary 20 rotates around principal arm 10.In addition, owing to be connected with sway bar 232 between auxiliary front strut 23 and auxiliary 20, thereby can support auxiliary front strut 23 and the favourable auxiliary front strut 23 of avoiding owing to gravity falls, this makes it possible to successfully operate auxiliary 20.
Then, shown in Fig. 7 b, the principal arm 10 that continues to lower, auxiliary 20 is lowerd thereupon, draw gear 40 is connected to the second end of auxiliary 20.
Shown in Fig. 7 c, move towards assembling position by draw gear 40 tractive auxiliarys 20, thereby so that auxiliary 20 is stacked and placed on principal arm 10 belows.At this moment, arm-tie 29 before the dismountable auxiliary.During this period, because the second end at principal arm 10 is provided with carriage 26, thereby the variable-amplitude steel wire rope 24 of elongation can support and can not interfere with principal arm 10 and auxiliary 20 by carriage 26, and this makes it possible to successfully operate auxiliary 20 so that auxiliary 20 rotates around principal arm 10.
Preferably, this draw gear 40 can adopt hoisting mechanism.
Shown in Fig. 7 d, tighten up variable-amplitude steel wire rope 24, so that auxiliary front strut 23 tilts away from principal arm 10, remove the sway bar 232 of auxiliary front strut 23.
Shown in Fig. 7 e, according to removing successively all the other each parts with the order of above-mentioned assembling contrary.
At last, shown in Fig. 7 f, auxiliary 20 and principal arm 10 fractionations are come.
As will be understood by the skilled person in the art, the connection between each parts of the boom structure of the embodiment of the invention can be adopted hinged, also can adopt this area other connection modes commonly used.
Although being further appreciated that as above, those skilled in the art adopted crawler crane to be introduced among the embodiment,, this boom structure also can be applied to the vehicle such as the other types hoisting crane.
Boom structure according to the above embodiment of the present invention, because the second end at principal arm 10 is provided with the carriage 26 that can support variable-amplitude steel wire rope 24, thereby auxiliary 20 can successfully rotate to assemble or dismantle around principal arm 10, thereby auxiliary 20 can be installed in collapsiblely principal arm 10 belows, and variable-amplitude auxiliary arm 20 can be at the assembling position below the principal arm 10 and carry out pivoting between the Hoisting Position of lifting operation, thereby when realizing higher hoisting height, effectively reduced the assembling boom structure and operated the required space of boom structure, and because the assembling of boom structure, play arm, putting arm and disassembling section just can finish smoothly at Active workings, thereby need not before operation, hoisting crane to be transferred to other places, save to a great extent the operating time and be conducive to the save operation cost.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.