CN217398314U - Double truss arm and operation machinery - Google Patents
Double truss arm and operation machinery Download PDFInfo
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- CN217398314U CN217398314U CN202220876371.6U CN202220876371U CN217398314U CN 217398314 U CN217398314 U CN 217398314U CN 202220876371 U CN202220876371 U CN 202220876371U CN 217398314 U CN217398314 U CN 217398314U
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Abstract
The utility model relates to a jack-up operation technical field provides a two truss arms and operation machinery. The double-truss arm comprises two main arms arranged in parallel, wherein each main arm comprises a lower knuckle arm, an arm head and a plurality of middle knuckle arms; a first reducing transverse knuckle arm is arranged between the lower knuckle arm and the middle knuckle arm; and/or a second variable-diameter transverse arm is arranged between two adjacent middle arms; and/or a third variable-diameter transverse joint arm is arranged between the middle joint arm and the arm head, and the size of one side, close to the arm head, of the first variable-diameter transverse joint arm, the second variable-diameter transverse joint arm and the third variable-diameter transverse joint arm is smaller than that of one side, close to the lower joint arm, of the first variable-diameter transverse joint arm. The utility model discloses a set up first reducing transverse pitch arm, set up two truss arms into the top narrow, the wide structural style in bottom more accords with structural stress design principle, improves the bearing degree of the holistic yawing force of two truss arms, alleviates the whole weight of two truss arms simultaneously, and reduce cost improves the carry-over performance, the carry-over operation of adaptation large-tonnage.
Description
Technical Field
The utility model relates to a jack-up operation technical field especially relates to a two truss arms and operation machinery.
Background
With the development of economy and high speed, the development of large petrochemical, nuclear power, traffic and other projects is driven, more crawler cranes with super-tonnage are needed, the construction scale is large, the equipment installation is modularized, the hoisting weight is super-increased, and the hoisting load of the super-large cranes is more and more required. The structural form of the arm support is also a single arm support structural form, and in order to improve the bearing capacity of the arm support system, structural forms of an A-shaped double arm support, a parallel double arm support and the like are presented in sequence.
The existing parallel double-arm frame increases the lateral stability, but increases the self weight of the arm frame, increases the production cost, reduces the hoisting performance, and cannot adapt to large-tonnage hoisting operation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a two truss arms and operation machinery for parallel both arms cantilever crane is from great among the solution prior art, reduces the defect of carry ability, realizes that two truss arms accord with the structure atress principle, improves the side direction bearing capacity, reduces the dead weight.
The utility model provides a double-truss arm, which comprises two main arms arranged in parallel, wherein each main arm comprises a lower arm section, an arm head and a plurality of middle arm sections, and the middle arm sections are arranged between the lower arm section and the arm head;
a first reducing transverse knuckle arm is arranged between the lower knuckle arm and the middle knuckle arm, and the size of one side, close to the arm head, of the first reducing transverse knuckle arm is smaller than that of one side, close to the lower knuckle arm, of the first reducing transverse knuckle arm;
and/or a second reducing transverse knuckle arm is arranged between two adjacent middle knuckle arms, and the size of one side, close to the arm head, of the second reducing transverse knuckle arm is smaller than that of one side, close to the lower knuckle arm, of the second reducing transverse knuckle arm;
and/or a third reducing transverse knuckle arm is arranged between the middle knuckle arm and the arm head, and the size of one side, close to the arm head, of the third reducing transverse knuckle arm is smaller than the size of one side, close to the lower knuckle arm, of the third reducing transverse knuckle arm.
According to the utility model provides a pair of two truss arms still includes back arm-tie, middle section arm is equipped with the otic placode, the first end of back arm-tie with the otic placode is articulated, the second end of back arm-tie is used for being connected with the back mast.
According to the utility model provides a pair of two truss arms, the otic placode is located and is close to lower festival arm on the middle festival arm.
According to the double-truss arm provided by the utility model, when a first reducing transverse arm is arranged between the lower arm and the middle arm;
and/or when a second variable-diameter transverse arm is arranged between two adjacent middle-section arms;
and a second transverse knuckle arm is arranged between the middle knuckle arm and the arm head, and the sizes of two sides of the second transverse knuckle arm close to and far away from the arm head are the same.
According to the double-truss arm provided by the utility model, when a first reducing transverse arm is arranged between the lower arm and the middle arm;
and/or when a third reducing transverse knuckle arm is arranged between the middle knuckle arm and the arm head;
and a third transverse knuckle arm is arranged between the adjacent middle knuckle arms, and the sizes of the two sides of the third transverse knuckle arm close to and far away from the arm head are the same.
According to the utility model provides a pair of two truss arms, first reducing horizontal section arm respectively with middle section arm with the connection can be dismantled to lower section arm.
According to the utility model provides a pair of two truss arms, the arm head is equipped with loose pulley assembly, loose pulley assembly pin joint in the arm head deviates from one side of middle section arm.
The utility model also provides an operating machine, including chassis, getting on the bus and as above arbitrary two truss arms, the rotatable locating of getting on the bus on the chassis, two truss arms are located on the getting on the bus.
According to the utility model provides an operating machine, still include fly jib, front mast and back mast, the first end of the said fly jib is connected with the said arm head, the second end of the said fly jib is equipped with and hoists the pulley; the first end of the front mast is connected with the arm head, and the second end of the front mast is connected with the second end of the auxiliary arm through a top pulling plate; the first end of the back mast is connected with the arm head, and the second end of the back mast is connected with the second end of the front mast through a steel wire rope assembly.
According to the utility model provides a pair of two truss arms, still including surpassing the mast, surpass the first end of mast pass through the preceding arm-drag board with the arm head is connected, surpass the second end of mast and be used for being connected with getting on the bus.
The utility model provides a two truss arms and operation machinery, including two main arms that set up side by side, the main arm includes lower knuckle arm, arm head and a plurality of middle knuckle arms, a plurality of middle knuckle arms locate between lower knuckle arm and the arm head; a first reducing transverse knuckle arm is arranged between the lower knuckle arm and the middle knuckle arm, and the size of one side, close to the arm head, of the first reducing transverse knuckle arm is smaller than that of one side, close to the lower knuckle arm, of the first reducing transverse knuckle arm; and/or a second reducing transverse knuckle arm is arranged between two adjacent middle knuckle arms, and the size of one side, close to the arm head, of the second reducing transverse knuckle arm is smaller than that of one side, close to the lower knuckle arm, of the first reducing transverse knuckle arm; and/or, middle festival arm with be equipped with the horizontal festival arm of third reducing between the arm head, the horizontal festival arm of third reducing is close to the size of one side of arm head is less than the horizontal festival arm of first reducing is close to the size of one side of lower festival arm, through setting up the horizontal festival arm of first reducing, sets up two truss arms into the top narrowly, and the wide structural style in bottom more accords with the structure atress design principle, improves the holistic lateral force's of two truss arms bearing degree, alleviates the whole weight of two truss arms simultaneously, reduce cost improves the lift-load performance, the big tonnage of adaptation lift-load operation.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a top view of a double truss arm provided by the present invention;
fig. 2 is a side view of a dual truss arm provided by the present invention;
fig. 3 is a schematic view of an overall structure of the working machine according to the present invention;
FIG. 4 is an enlarged schematic view of a portion A of FIG. 3;
reference numerals:
100. a main arm; 110. a lower knuckle arm; 120. an arm head; 130. a middle joint arm; 131. an ear plate; 140. a first variable diameter knuckle arm; 150. a second track arm; 160. a third transverse knuckle arm; 170. a sheave assembly; 210. a chassis; 220. getting on the vehicle; 230. an auxiliary arm; 231. hoisting a pulley; 240. a front mast; 241. a top pull plate; 250. a back mast; 251. a wire rope assembly; 260. a back pulling plate; 270. a front pulling plate; 280. raising the mast; 290. the super-lift trolley.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
The following describes a double-truss arm of the present invention with reference to fig. 1 to 4, including two main arms 100 arranged side by side, where the main arm 100 includes a lower arm 110, an arm head 120 and a plurality of middle arms 130, the corresponding lower arm 110 between the two main arms 100 is arranged in parallel, the corresponding middle arm 130 between the two main arms 100 is arranged in parallel, and the plurality of middle arms 130 are arranged between the lower arm 110 and the arm head 120; a first reducing transverse knuckle arm 140 is arranged between the lower knuckle arm 110 and the middle knuckle arm 130, and the size of one side, close to the arm head 120, of the first reducing transverse knuckle arm 140 is smaller than that of one side, close to the lower knuckle arm 110, of the first reducing transverse knuckle arm 140;
and/or a second variable diameter transverse arm is arranged between two adjacent middle joint arms 130, and the size of one side of the second variable diameter transverse arm close to the arm head 120 is smaller than that of one side of the second variable diameter transverse arm close to the lower joint arm 110;
and/or a third variable diameter transverse joint arm is arranged between the middle joint arm 130 and the arm head 120, and the size of one side of the third variable diameter transverse joint arm close to the arm head 120 is smaller than that of one side of the third variable diameter transverse joint arm close to the lower joint arm 110. It can be understood that the present embodiment provides a double-truss arm comprising two main arms 100, and the two main arms 100 are juxtaposed. The parallel arrangement means that the two main arms 100 are correspondingly arranged, the bottom ends of the two main arms 100 are used for being installed and matched with the upper vehicle 220, and the top ends of the main arms 100 are used for installing the auxiliary arms 230.
Specifically, each main arm 100 is provided with a lower knuckle arm 110, an arm head 120 and a plurality of middle knuckle arms 130, wherein the lower knuckle arm 110 of one main arm 100 is arranged in parallel with the lower knuckle arm 110 of another main arm 100, the middle knuckle arm 130 of one main arm 100 is arranged in parallel with the middle knuckle arm 130 of another main arm 100, and the two arm heads 120 are arranged at the top end of the corresponding main arm 100. The plurality of intermediate arm sections 130 are disposed between the lower arm section 110 and the arm head 120, that is, in a direction from the bottom to the top of the main arm 100, the upper end of the lower arm section 110 is connected to the lower end of the lowermost arm section 130, the plurality of intermediate arm sections 130 are connected in series end to end, and the upper end of the uppermost arm section 130 is connected to the arm head 120.
Further, in one embodiment, a first variable diameter knuckle arm 140 is disposed between the lower knuckle arm 110 and the middle knuckle arm 130, and the first variable diameter knuckle arm 140 enables the connection between the two main arms 100 while enabling the connection between the lower knuckle arm 110 and the middle knuckle arm 130. It should be noted that the first variable diameter knuckle arm 140 is a variable diameter knuckle arm, so that the distance between the lower knuckle arms 110 of the two main arms 100 is greater than the distance between the middle knuckle arms 130 corresponding to the two main arms 100.
Specifically, two ends of the first reducing knuckle arm 140 are respectively connected with the two main arms 100, the upper side of the first end of the first reducing knuckle arm 140 is connected with the lower end of the middle knuckle arm 130 of one of the main arms 100, the lower side of the first end of the first reducing knuckle arm 140 is connected with the upper end of the lower knuckle arm 110 of the main arm 100, wherein the size of the effective connection surface of the upper side of the first end of the first reducing knuckle arm 140 is smaller than that of the effective connection surface of the lower side of the first end of the first reducing knuckle arm 140, and the effective connection surface refers to a range occupied by the corresponding connection in actual connection.
The upper side of the second end of the first variable diameter knuckle arm 140 is connected to the lower end of the middle knuckle arm 130 of the other main arm 100, the lower side of the second end of the first variable diameter knuckle arm 140 is connected to the upper end of the lower knuckle arm 110 of the main arm 100, and the size of the effective connection surface of the upper side of the second end of the first variable diameter knuckle arm 140 is smaller than the size of the effective connection surface of the lower side of the second end of the first variable diameter knuckle arm 140, so that variable diameter connection is achieved.
That is to say, the two main arms 100 form a structural form with a narrow upper end and a wide lower end, the lower knuckle arm 110 at the lower end bears the force transmitted by the whole main arm 100, the distance between the two lower knuckle arms 110 is increased, the lifting capacity of the main arm 100 can be effectively improved, the structural stress principle is met, the lateral bearing capacity is improved, and compared with the prior art in which the diameter is changed by adopting an inclined arm, the self weight of the main arm 100 is effectively reduced, the production cost is reduced, and the large-tonnage lifting operation is adapted.
It should be noted that the number of the middle joint arms 130 can be specifically set and selected according to the actual requirement of the length of the main arm 100.
In another embodiment, a second reducing knuckle arm is arranged between two adjacent middle knuckle arms 130, so that the reducing of the main arm 100 from the arm head 120 to the lower knuckle arm 110 is realized, and the double-truss arm is widened from narrow to wide.
In another embodiment, a third variable diameter transverse arm is arranged between the middle arm 130 and the arm head 120, so that the variable diameter of the main arm 100 from the arm head 120 to the lower arm 110 is realized, and the double-truss arm is changed from narrow to wide.
In another embodiment, a first variable diameter transverse arm 140 is disposed between the lower arm 110 and the middle arm 130, and a second variable diameter transverse arm is disposed between two adjacent middle arms 130, wherein the size of the first variable diameter transverse arm 140 near the arm head 120 is the same as the size of the second variable diameter transverse arm near the lower arm 110.
In another embodiment, a first variable diameter transverse arm 140 is arranged between the lower arm 110 and the middle arm 130, a third variable diameter transverse arm is arranged between the middle arm 130 and the arm head 120, and the size of the side of the first variable diameter transverse arm 140 close to the arm head 120 is the same as the size of the side of the third variable diameter transverse arm close to the lower arm 110.
In another embodiment, a second variable diameter transverse arm is arranged between two adjacent intermediate arms 130, a third variable diameter transverse arm is arranged between the intermediate arms 130 and the arm head 120, and the size of the side of the second variable diameter transverse arm close to the arm head 120 is the same as the size of the side of the third variable diameter transverse arm close to the lower arm 100.
In another embodiment, a first variable diameter transverse joint arm 140 is arranged between the lower joint arm 110 and the middle joint arm 130, a second variable diameter transverse joint arm is arranged between two adjacent middle joint arms 130, a third variable diameter transverse joint arm is arranged between the middle joint arm 130 and the arm head 120, the size of the side of the first variable diameter transverse joint arm 140 close to the arm head 120 is the same as the size of the side of the second variable diameter transverse joint arm close to the lower joint arm 110, and the size of the side of the second variable diameter transverse joint arm close to the arm head 120 is the same as the size of the side of the third variable diameter transverse joint arm close to the lower joint arm 100.
In another embodiment, a fourth transverse arm is disposed between the lower arm 110 and the middle arm 130, and a second variable diameter transverse arm is disposed between two adjacent middle arms 130, and the fourth transverse arm has the same size near and far from both sides of the arm head 120 and the same size as the lower side of the second variable diameter transverse arm.
In another embodiment, a fourth knuckle arm is disposed between the lower knuckle arm 110 and the middle knuckle arm 130, a second knuckle arm 150 is disposed between the middle knuckle arm 130 and the arm head 120, and the fourth knuckle arm has the same size on both sides near and far from the arm head 120 and the same size on the lower side of the third variable diameter knuckle arm.
According to the utility model provides a pair of two truss arms still includes back arm-tie 260, and the middle section arm 130 that is close to lower section arm 110 is equipped with otic placode 131, and back arm-tie 260's first end is articulated with otic placode 131, and back arm-tie 260's second end is used for being connected with back mast 250. It is understood that the middle joint arm 130 adjacent to the lower joint arm 110 is provided with the lug plate 131, that is, the middle joint arm 130 positioned lowermost in the height direction of the main arm 100 is provided with the lug plate 131. The first end of the back pulling plate 260 is hinged to the ear plate 131 through a pin shaft, and the other end of the back pulling plate 260 is used for being connected with the back mast 250, so that the main arm 100, the back pulling rod and the back mast 250 form a stable triangular structure, and the structural strength is guaranteed. Meanwhile, the back pulling plate 260 can be rapidly assembled without changing the position of the back pulling plate 260.
It should be noted that the arrangement of the ear plate 131 can also be applied to a single arm, and during assembly, the first end of the back pulling plate 260 is hinged to the ear plate 131, the back pulling plate 260 is horizontally disposed on the middle arm 130, and after the assembly of each arm is completed, the second end of the back pulling plate 260 is correspondingly connected to the back mast 250.
According to the double-truss arm provided by the utility model, a first reducing transverse knuckle arm 140 is arranged between the lower knuckle arm 110 and the middle knuckle arm 130; and/or a second variable diameter transverse arm is arranged between two adjacent middle arms 130; a second transverse knuckle arm 150 is arranged between the middle knuckle arm 130 and the arm head 120, the transverse length of the second transverse knuckle arm 150 is smaller than that of the first variable diameter transverse knuckle arm 140, and the sizes of the two sides of the second transverse knuckle arm 150 close to and far from the arm head 120 are the same. It is understood that a second transverse knuckle arm 150 is disposed transversely between the middle knuckle arm 130 and the arm head 120, wherein a first end of the second transverse knuckle arm 150 is connected to one of the main arms 100, and a second end of the second transverse knuckle arm 150 is connected to the other main arm 100, so as to connect the middle knuckle arm 130 and the arm head 120 and connect the two main arms 100.
Wherein the effective connection surface of the upper side of second transverse link arm 150 is the same size as the effective connection surface of the lower side of second transverse link arm 150. The effective connection surface of the underside of the second knuckle arm 150 is the same size as the effective connection surface of the underside of the first variable diameter knuckle arm 140, but is smaller than the effective connection surface of the underside of the first variable diameter knuckle arm 140. That is, the second knuckle arm 150 has a lateral length that is less than the lateral length of the underside of the first variable diameter knuckle arm 140.
In one embodiment, the effective connecting surface of the underside of the second pitch arm 150 is the same size as the effective connecting surface of the topside of the second variable diameter pitch arm, which is the same size as the effective connecting surface of the topside of the first variable diameter pitch arm 140.
According to the double-truss arm provided by the utility model, a first reducing transverse knuckle arm 140 is arranged between the lower knuckle arm 110 and the middle knuckle arm 130; and/or a third variable diameter transverse arm is arranged between the middle arm 130 and the arm head 120; a third transverse arm 160 is arranged between the adjacent middle-joint arms 130, and the sizes of the two sides of the third transverse-joint arm 160 close to and far away from the arm head 120 are the same. It is understood that a third transverse arm 160 is transversely disposed between two adjacent intermediate arms 130, wherein a first end of the third transverse arm 160 is connected to one of the main arms 100, and a second end of the third transverse arm 160 is connected to the other main arm 100, while the connection between two adjacent intermediate arms 130 and two main arms 100 is realized.
The effective connection surface of the upper side of third transverse link arm 160 is the same size as the effective connection surface of the lower side of third transverse link arm 160. The effective connecting surface of the underside of the third knuckle arm 160 is the same size as the effective connecting surface of the underside of the first variable diameter knuckle arm 140, but is smaller than the effective connecting surface of the underside of the first variable diameter knuckle arm 140. That is, the third track arm 160 has a lateral length less than the lateral length of the underside of the first variable diameter track arm 140.
In one embodiment, the effective connecting surface of the upper side of the third knuckle arm 160 is the same size as the effective connecting surface of the lower side of the third variable diameter knuckle arm, and the effective connecting surface of the lower side of the third knuckle arm 160 is the same size as the effective connecting surface of the lower side of the first variable diameter knuckle arm 140.
In one embodiment, a third transverse arm 160 is disposed between two adjacent middle arms 130, and a second variable diameter transverse arm is disposed between two adjacent middle arms 130.
In one embodiment, the arm head 120 is provided with a pulley assembly 170, and the pulley assembly 170 is connected to the side of the arm head 120 away from the middle joint arm 130 through a pin shaft and connected with the hoisting weight through a steel wire rope, and is a stress point of the double-truss arm.
According to the utility model provides a pair of truss arm, first reducing horizontal pitch arm 140 can dismantle with middle section arm 130 and lower section arm 110 respectively and be connected. It can be understood that the lower arm 110 is detachably connected to the first variable-diameter transverse arm 140, and the middle arm 130 is detachably connected to the first variable-diameter transverse arm 140, that is, the position of the first variable-diameter transverse arm 140 can be adjusted according to actual needs, and the first variable-diameter transverse arm 140 can be arranged between the middle arms 130 to meet different lifting requirements.
The utility model also provides a working machine, including chassis 210, go up car 220 and as above arbitrary two truss arms, go up on car 220 is rotatable locate chassis 210, on two truss arms located last car 220. It will be appreciated that the work machine may be a crane.
According to the utility model provides a pair of working machine still includes the fly jib 230, and the first end and the arm head 120 of fly jib 230 are connected, and the second end of fly jib 230 is equipped with lifts by crane pulley 231. It will be appreciated that the first end of the secondary arm 230 is connected to the arm head 120, and the second end of the secondary arm 230 is provided with a lifting pulley 231, the lifting pulley 231 being connected to the object to be lifted.
According to the utility model provides a pair of working machine still includes front mast 240, and front mast 240's first end is connected with arm head 120, and front mast 240's second end is connected with the second end of auxiliary boom 230 through top arm-drag 241. It can be understood that the first end of the front mast 240 is connected to the boom head 120, and the second end of the front mast 240 is connected to the second end of the secondary boom 230 through the top pulling plate 241, so that the front mast 240, the top pulling plate 241 and the secondary boom 230 form a triangular stable structure, and then the triangular structure formed by the main boom 100, the rear pulling rod and the rear mast 250 is connected through the wire rope assembly 251, and by adjusting the length of the wire rope assembly 251, the adjustment of different positions of the triangle of the secondary boom 230 is realized, and further, the working radius is adjusted.
According to the utility model provides a pair of working machine still includes back mast 250, and the first end and the arm head 120 of back mast 250 are connected, and the second end of back mast 250 is connected with the second end of front mast 240 through wire rope component 251. It will be appreciated that the first end of the back mast 250 is connected to the arm head 120, the second end of the back mast 250 is connected to the second end of the front mast 240, and the cable assembly 251 is wound around the second end of the back mast 250 and the second end of the front mast 240 and is adjustable in length.
According to the utility model provides a pair of working machine, still including surpassing mast 280, surpass the first end of mast 280 and be connected with arm head 120 through preceding arm-tie 270, surpass the second end of mast 280 and be used for being connected with last car 220. It will be appreciated that the first end of the over-time mast is connected to the boom head 120 via a forward pulling plate 270 and the second end of the over-time mast is adapted to be connected to the upper carriage 220, wherein the first end of the over-time mast is connected to the over-lift trolley 290 via a pulling plate, thereby balancing the moment of the hoist on the center of gravity of the slewing.
The utility model provides a two truss arms and operation machinery, including two main arms that set up side by side, the main arm includes lower arm, arm head and a plurality of middle arm, and a plurality of middle arms are located between lower arm and the arm head; a first reducing transverse knuckle arm is arranged between the lower knuckle arm and the middle knuckle arm, and the size of one side, close to the arm head, of the first reducing transverse knuckle arm is smaller than that of one side, close to the lower knuckle arm, of the first reducing transverse knuckle arm; and/or a second reducing transverse knuckle arm is arranged between two adjacent middle knuckle arms, and the size of one side, close to the arm head, of the second reducing transverse knuckle arm is smaller than that of one side, close to the lower knuckle arm, of the first reducing transverse knuckle arm; and/or, be equipped with the horizontal festival arm of third reducing between middle festival arm and the arm head, the size that the horizontal festival arm of third reducing is close to one side of arm head is less than the size that the horizontal festival arm of first reducing is close to one side of lower festival arm, through setting up the horizontal festival arm of first reducing, set up two truss arms into the top narrowly, the wide structural style in bottom, more accord with structural stress design principle, improve the bearing degree of the holistic lateral force of two truss arms, alleviate the whole weight of two truss arms simultaneously, therefore, the cost is reduced, the lifting load performance is improved, the large-tonnage of adaptation is carried the operation.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The double-truss arm is characterized by comprising two main arms arranged in parallel, wherein each main arm comprises a lower arm section, an arm head and a plurality of middle arm sections, and the middle arm sections are arranged between the lower arm section and the arm head sections;
a first reducing transverse knuckle arm is arranged between the lower knuckle arm and the middle knuckle arm, and the size of one side, close to the arm head, of the first reducing transverse knuckle arm is smaller than that of one side, close to the lower knuckle arm, of the first reducing transverse knuckle arm;
and/or a second reducing transverse knuckle arm is arranged between two adjacent middle knuckle arms, and the size of one side, close to the arm head, of the second reducing transverse knuckle arm is smaller than that of one side, close to the lower knuckle arm, of the second reducing transverse knuckle arm;
and/or a third reducing transverse knuckle arm is arranged between the middle knuckle arm and the arm head, and the size of one side, close to the arm head, of the third reducing transverse knuckle arm is smaller than the size of one side, close to the lower knuckle arm, of the third reducing transverse knuckle arm.
2. The double truss arm of claim 1 further comprising a back stay, wherein the intermediate link arm is provided with a lug, a first end of the back stay is hinged to the lug, and a second end of the back stay is configured to be connected to a back mast.
3. The double truss arm of claim 2 wherein said ear plate is disposed on said intermediate link arm adjacent said lower link arm.
4. The double truss arm of claim 1 wherein a first variable diameter transverse knuckle arm is provided between the lower knuckle arm and the intermediate knuckle arm;
and/or when a second variable-diameter transverse arm is arranged between two adjacent middle-section arms;
and a second transverse arm is arranged between the middle arm and the arm head, and the sizes of two sides of the second transverse arm close to and far away from the arm head are the same.
5. The dual truss arm of claim 1 wherein a first variable diameter knuckle arm is provided between the lower knuckle arm and the intermediate knuckle arm;
and/or when a third reducing transverse knuckle arm is arranged between the middle knuckle arm and the arm head;
and a third transverse knuckle arm is arranged between the adjacent middle knuckle arms, and the sizes of the two sides of the third transverse knuckle arm close to and far away from the arm head are the same.
6. The double truss arm of any one of claims 1 to 5 wherein the first variable diameter cross arm is removably connected to the intermediate and lower knuckle arms, respectively.
7. Double truss arm according to any of claims 1-5, wherein the arm head is provided with a pulley assembly pinned to a side of the arm head facing away from the intermediate link arm.
8. A work machine comprising a chassis, a lift truck and a double truss arm as defined in any one of claims 1 to 7, the lift truck being pivotally mounted on the chassis, the double truss arm being pivotally mounted on the lift truck.
9. The work machine of claim 8, further comprising a fly jib, a front mast and a rear mast, wherein a first end of said fly jib is connected to said boom head and a second end of said fly jib is provided with a lifting pulley; the first end of the front mast is connected with the arm head, and the second end of the front mast is connected with the second end of the auxiliary arm through a top pulling plate; the first end of the back mast is connected with the arm head, and the second end of the back mast is connected with the second end of the front mast through a steel wire rope assembly.
10. The work machine of claim 8, further comprising a superlift mast, a first end of said superlift mast coupled to said boom head by a forward pull plate, a second end of said superlift mast for coupling to a pick-up truck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220876371.6U CN217398314U (en) | 2022-04-15 | 2022-04-15 | Double truss arm and operation machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220876371.6U CN217398314U (en) | 2022-04-15 | 2022-04-15 | Double truss arm and operation machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217398314U true CN217398314U (en) | 2022-09-09 |
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ID=83140541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220876371.6U Active CN217398314U (en) | 2022-04-15 | 2022-04-15 | Double truss arm and operation machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217398314U (en) |
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2022
- 2022-04-15 CN CN202220876371.6U patent/CN217398314U/en active Active
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