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, significantly reduced arm assembling, dismounting, played arm and put the required space of arm, reduced the time of aforesaid operations and helped the save operation cost.
According to an aspect of the present invention, provide a kind of boom structure, described boom structure comprises: principal arm, and first end is connected to the main body of vehicle; Auxiliary, described auxiliary are connected to second end of described principal arm rotationally at first end; The auxiliary front strut is connected to first end of described auxiliary at first end; The auxiliary rear pole is connected to second end of described principal arm at first end; The luffing rope is connected between second end of second end of described auxiliary front strut and described auxiliary rear pole; And first sway bar, be connected near 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 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 second end of described principal arm; Arm-tie before the auxiliary, an end is connected near 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 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 first end of described auxiliary; The epimerite arm is positioned at 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: second sway bar is connected near 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 second end of described principal arm, and the other end is a free end, and this free end supports described auxiliary slidably.
Further, described carriage comprises first strut bar and second strut bar, described first strut bar and described second strut bar are connected to the diverse location place of second end of described principal arm respectively at first end separately, and described first strut bar and described second strut bar are connected to each other along the direction away from described principal arm at separately second end and are in the same place.
Further, described boom structure also comprises: 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 a hoisting mechanism.
According to a further aspect in the invention, provide a kind of hoisting crane, described hoisting crane comprises having the boom structure of feature as mentioned above.
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 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, first end of described auxiliary is pivoted to 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 second end of described principal arm, first end of auxiliary front strut is connected to first end of described auxiliary, and the luffing rope is connected between second end of second end of described auxiliary front strut and described auxiliary rear pole (22);
D) be connected auxiliary post-tensioning plate near 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 second end of the described auxiliary front strut ground that hangs, first sway bar is connected near first end of described auxiliary and between the described auxiliary front strut, described first sway bar is used to support 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 the lifting position to carry out lifting operation.
Further, described step c) also comprises: installation bracket on second end of described principal arm, and optionally to support described luffing rope.
Further, described step f) also comprises: be connected second sway bar between described principal arm and described auxiliary rear pole, described second sway bar supports described auxiliary rear pole and prevents that described auxiliary rear pole from tilting; And on second end of described principal arm, connecting the auxiliary sway bar, 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 the luffing auxiliary be stacked and placed on below principal arm, and the luffing auxiliary can be at the assembling position below the principal arm and carry out pivoting between the lifting 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 in the operation place, thereby need not before operation, hoisting crane to be transferred to other places, save the operating time to a great extent and helped the save operation cost.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, be that example describes boom structure of the present invention and operation thereof in detail with the crawler crane.
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 the luffing auxiliary 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 the luffing auxiliary 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 principal arm 10 belows collapsibly and also can rotate around principal arm 10.Particularly, auxiliary 20 is connected to second end of principal arm 10 and auxiliary 20 rotationally at first end and has assembling position (as shown in Figure 1) that is positioned at below the principal arm 10 and the lifting position (as shown in Figure 2) of carrying out lifting operation, and auxiliary 20 can pivot between lifting position and assembling position around 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 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 luffing steel rope (luffing rope) 24.Arm-tie 29 at one end is connected to 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 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, on second end of principal arm 10, carriage 26 is installed, at auxiliary 20 during principal arm 10 rotates, carriage 26 can support luffing steel rope 24, is involved in the rotation of interfering auxiliary 20 in principal arm 10 or the auxiliary 20 to avoid luffing steel 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 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 second end of principal arm 10 and between the auxiliary rear pole 22, to support auxiliary rear pole 22; And 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 luffing auxiliary of single oil cylinder, and shown in Fig. 3 c, auxiliary 20 can comprise: the coxopodite arm 202 that is positioned at first end of auxiliary 20; Be positioned at the epimerite arm 206 of 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 the epimerite arm 206 of auxiliary by hoist rope 209 (shown in Fig. 7 a).
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 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 a hoisting mechanism.
Describe 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 below, 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 the partial enlarged drawing of Fig. 3 d and Fig. 3 e respectively; 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, first end of principal arm 10 is connected to crane main body, principal arm arm-tie 12 is connected between 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, make principal arm 10 and ground keep certain distance, then below principal arm 10, the coxopodite arm 202 that will be positioned at auxiliary 20 first ends is pivoted to second end of principal arm 10, makes auxiliary 20 be in the assembling position that is stacked in principal arm 10 belows.
Shown in Fig. 3 c, next, the 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 lifting 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 second end of principal arm 10, one end of auxiliary front strut 23 is connected on first end of auxiliary 20, then luffing steel 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, the wherein clear relation that shows between auxiliary front strut 23, auxiliary rear pole 22 and the luffing steel rope 24.
Then, shown in Fig. 3 e, be connected auxiliary post-tensioning plate 28 near 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; Connect auxiliary sway bar 25 on second end of principal arm 10, 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 first strut bar 262 and second strut bar 264, first strut bar 262 and second strut bar 264 are connected to the second end diverse location place of principal arm 10 respectively at first end, and at second end along being connected to each other together away from the direction of principal arm 10, first strut bar 262 and second strut bar 264 constitute a stable triangular structure with second end of principal arm 10 thus, carriage 26 is used for optionally supporting luffing steel 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 luffing steel rope 24 of auxiliary 20 by the hoisting mechanism (not shown), make auxiliary front strut 23 with the downward-sloping and ground that hangs of luffing steel rope 24 bonded assemblys one end.Then, be connected sway bar 232 near 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 luffing steel rope 24 of auxiliary 20, between 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 second end at principal arm 10 is provided with carriage 26, thereby the luffing steel rope 24 of length can be supported 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 luffing steel rope 24 is tightened up gradually, boom structure plays arm to as shown in Figure 2 lifting position the most at last.Same shown in Fig. 3 h, because second end at principal arm 10 is provided with carriage 26, thereby the luffing steel rope 24 of length can be supported 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 luffing steel rope 24, make auxiliary 20 near the ground around 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 second end at principal arm 10 is provided with carriage 26, thereby the luffing steel rope 24 of length can be supported 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 second end of auxiliary 20.
Shown in Fig. 7 c, move towards assembling position by draw gear 40 tractive auxiliarys 20, thereby make auxiliary 20 be stacked and placed on principal arm 10 belows.At this moment, arm-tie 29 before the dismountable auxiliary.During this period, because second end at principal arm 10 is provided with carriage 26, thereby the luffing steel 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 luffing steel rope 24, make auxiliary front strut 23 tilt away from principal arm 10, remove the sway bar 232 of auxiliary front strut 23.
Shown in Fig. 7 e, according to removing all the other each parts successively 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.
Though 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 second end at principal arm 10 is provided with the carriage 26 that can support luffing steel rope 24, thereby auxiliary 20 can successfully rotate to assemble or to dismantle around principal arm 10, thereby auxiliary 20 can be installed in collapsiblely principal arm 10 belows, and luffing auxiliary 20 can be at the assembling position below the principal arm 10 and carry out pivoting between the lifting 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 in the operation place, thereby need not before operation, hoisting crane to be transferred to other places, save the operating time to a great extent and helped 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 changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.