CN112830400B - Crawler crane and crane transportation method - Google Patents
Crawler crane and crane transportation method Download PDFInfo
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- CN112830400B CN112830400B CN202110138211.1A CN202110138211A CN112830400B CN 112830400 B CN112830400 B CN 112830400B CN 202110138211 A CN202110138211 A CN 202110138211A CN 112830400 B CN112830400 B CN 112830400B
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- arm
- arms
- crane
- host
- joint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
Abstract
The invention relates to the technical field of cranes, and provides a crawler crane and a crane transportation method, wherein the crawler crane comprises a host, an arm support and a rotatable lifting lug, the arm support comprises a lower section arm, an upper section arm and a plurality of first middle section arms, the first end of the lower section arm is rotatably connected with the host, the two ends of the first middle section arm are respectively detachably connected with the second end of the lower section arm and the upper section arm, and one end of the rotatable lifting lug is connected with the second end of the lower section arm; at least one longitudinal rod of each first intermediate section arm is provided with a plurality of first connecting pieces which are used for connecting the plurality of first intermediate section arms when the arm support is in a transportation state. According to the crawler crane and the crane transportation method, the assembly of the arm support and the loading and unloading of the whole crane in the transportation process can be realized through the crane, an auxiliary crane is not needed, and engineering cost and working efficiency are saved; the arm support is assembled and disassembled by means of the rotatable lifting lug, a crane is not required to carry out rotation operation, and rollover accidents are avoided.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a crawler crane and a crane transportation method.
Background
The prior crawler crane needs to assemble the arm support before each use, and needs to transfer transportation by a transportation vehicle after the use. The loading and unloading of the crawler crane are required during the transition transportation. When the length of the arm support is longer, all the sections of the arm support after the arm support is disassembled are required to be stacked on the transport vehicle. The prior art for the assembly of crawler crane booms and loading and unloading is usually carried out with the aid of auxiliary cranes, which however undoubtedly increase the equipment costs and the manpower costs. In addition, the auxiliary crane is complicated in assembly and disassembly process, and the assembly and disassembly time is correspondingly long, so that the engineering efficiency is also influenced.
Disclosure of Invention
The invention provides a crawler crane and a crane transportation method, which are used for solving the problems of higher engineering cost and lower engineering efficiency caused by the fact that the crawler crane in the prior art needs to assemble an arm support by means of an auxiliary crane and load and unload the arm support during transition transportation.
The invention provides a crawler crane, which comprises a host, an arm support and a rotatable lifting lug, wherein the arm support comprises a lower section arm, an upper section arm and a plurality of first middle section arms, the first ends of the lower section arms are rotatably connected with the host, the two ends of the first middle section arms are respectively and detachably connected with the second ends of the lower section arms and the upper section arms, and one end of the rotatable lifting lug is connected with the second ends of the lower section arms; at least one longitudinal rod of each first middle joint arm is provided with a plurality of first connecting pieces; when the arm support is in a transportation state, the first connecting piece of one of the first middle section arms is correspondingly connected with the first connecting piece of the other first middle section arm one by one.
According to the crawler crane provided by the invention, the crawler crane further comprises the connecting plates and the pin shafts, wherein the first connecting piece comprises the lug plates arranged on the first middle section arms, and two ends of the connecting plates are respectively connected with the lug plates corresponding to the two first middle section arms through the pin shafts.
According to the crawler crane provided by the invention, the arm support further comprises a second middle section arm and a transition section arm, two ends of the transition section arm are detachably connected with the first middle section arm and the second middle section arm respectively, the upper end of the lower section arm is detachably connected with one end, far away from the transition section arm, of the first middle section arm, the upper section arm is detachably connected with one end, far away from the transition section arm, of the second middle section arm, and when the arm support is in a transportation state, the second middle section arm can be embedded and sleeved in the first middle section arm.
According to the crawler crane provided by the invention, the first middle joint arm is provided with the plurality of second connecting pieces, the outer side of the transition joint arm is provided with the plurality of third connecting pieces, and when the arm support is in a transportation state, the plurality of second connecting pieces are in one-to-one correspondence connection with the plurality of third connecting pieces.
The invention also provides a crane transporting method for transporting any self-loading and unloading crawler crane, which comprises the steps of controlling the host and the lower section arm to load the arm support, and comprises the following steps:
controlling the host and the lower section arms, and lifting the upper section arms and the plurality of first middle section arms to a stacking state to form a lifting arm support group;
after the host machine is controlled to run onto the transport vehicle, the rotatable lifting lug is connected with the lifting arm support group;
and controlling the host and the lower section arm, lifting and placing the lifting arm support group at a designated position of the transport vehicle, wherein the placement orientation of the lifting arm support group is adjusted through the rotatable lifting lug.
According to the crane transporting method provided by the invention, the control of the host and the lower section arm, the lifting of the upper section arm and the plurality of first intermediate section arms to a stacked state, to form a lifting arm support group, comprises the following steps:
controlling the host and the lower section arm to hoist a second middle section arm, so that one end of the second middle section arm is nested in the first middle section arm; pushing the second intermediate knuckle arm into the bottom of the first intermediate knuckle arm.
According to the crane transporting method provided by the invention, the control of the host and the lower section arm, the lifting of the upper section arm and the plurality of first intermediate section arms to a stacked state, to form a lifting arm support group, comprises the following steps:
controlling the host and the lower section arms, and lifting the plurality of first middle section arms to be placed side by side;
connecting two adjacent first middle section arms through the first connecting piece to form a hoisting foundation;
and controlling the host and the lower joint arms, lifting the upper joint arms and other first middle joint arms to the upper part of the lifting foundation, and connecting and fixing the upper joint arms and other first middle joint arms with the lifting foundation.
According to the crane transporting method provided by the invention, after the host is controlled to travel onto the transport vehicle, the rotatable lifting lug is connected with the lifting arm frame set, and the crane transporting method comprises the following steps:
controlling the transport vehicle to run until the tail of the transport vehicle is opposite to the hoisting arm support group, and enabling the rotatable lifting lug to be positioned right above the hoisting arm support group;
and controlling the lower knuckle arm to downwards amplitude until the rotatable lifting lug and the lifting arm support group can be connected.
According to the crane transporting method provided by the invention, the control of the host and the lower section arm, the lifting of the lifting arm support set to the appointed position of the transport vehicle, comprises the following steps:
The lower knuckle arm is controlled to upwards amplitude to hoist the hoisting arm support set;
controlling the host to drive on the transport vehicle in a carrying way until the hoisting arm support group is positioned right above the appointed position;
and controlling the lower section arm to downwards amplitude, and after stirring the lifting arm support group to rotate until the length direction of the first middle section arm is parallel to the running direction of the host machine, placing the arm support group at the appointed position.
The crane transportation method provided by the invention further comprises the step of controlling the host and the lower section arm to unload the arm support, and comprises the following steps:
the lower knuckle arm is controlled to upwards amplitude to hoist the hoisting arm support set;
controlling the host machine to drive to the tail of the transport vehicle in a carrying way;
the lower knuckle arm is controlled to downwards swing until the hoisting arm support group is placed on the ground;
and after the transport vehicle is controlled to travel forward for a set distance, the host computer is controlled to travel down the transport vehicle.
According to the crawler crane and the crane transportation method, the rotatable lifting lug is arranged on the lower joint arm, and when the joint arm is assembled, the lifted joint arm can be manually stirred so as to adjust the joint arm to a proper direction, so that the quick butt joint of the connecting joints of the two joint arms can be realized; when the hoisting arm support group is assembled and disassembled in the transportation vehicle, the hoisting arm support group can be manually stirred so as to be placed at a specified position in a proper direction. Compared with the traditional crane loading and unloading technology, the invention can realize the assembly and the loading and unloading of the arm support through the crane, does not need an auxiliary crane, saves engineering cost and improves engineering efficiency. In addition, in the process of loading and unloading the boom set, the direction of the boom set is regulated through the rotatable lifting lug, the main machine is not required to carry out rotation operation, and only the main machine is required to carry out walking and drive the lower-section boom to carry out up-down amplitude variation operation, so that rollover accidents possibly caused by rotation operation of the main machine are avoided.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a self-loading crane according to one embodiment of the present invention;
FIG. 2 is a second schematic diagram of the self-loading crane according to the present invention;
fig. 3 is a partial enlarged view of a portion a in fig. 1;
fig. 4 is a schematic diagram of a boom structure of the self-loading and unloading crane provided by the invention;
FIG. 5 is a schematic diagram of a stacking state of a set of lifting arms of the self-loading and unloading crane provided by the invention;
FIG. 6 is a schematic view of the connection structure of the first connection members of the two first intermediate link arms;
fig. 7 is a partial enlarged view of the portion B in fig. 5;
fig. 8 is a schematic view of a state of the crawler crane provided by the invention for lifting the second middle knuckle arm;
FIG. 9 is a schematic diagram of a crawler crane in a crane transporting method according to one embodiment of the present invention;
FIG. 10 is a second schematic diagram of the crawler crane in the crane transporting method according to the present invention;
FIG. 11 is a third schematic view of the crane transporting method according to the present invention in a crawler crane loading state;
FIG. 12 is a diagram showing a crawler crane in a loading state in the crane transporting method according to the present invention;
reference numerals:
1. a host; 2. Arm support; 21. A lower arm section;
211. connecting an ear plate; 22. A first intermediate arm; 221. A first connector;
222. a connecting plate; 223. A pin shaft; 224. A second connector;
23. an upper arm section; 24. A second intermediate knuckle arm; 25. A transition knuckle arm;
251. a third connecting member; 26. A third intermediate arm; 3. A rotatable lifting lug;
31. rotating the hanging ring; 311. An upper ring body; 312. A lower ring body;
313. a connecting piece; 32. Shackle off; 4. A hanging belt;
5. a transport vehicle; 6. And hoisting the arm support group.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In describing embodiments of the present invention, it should be noted that the terms "first" and "second" are used for clarity in describing the numbering of the product components and do not represent any substantial distinction unless explicitly stated or defined otherwise. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.
The invention provides a crawler crane, wherein one of the state diagrams of the crawler crane is shown in fig. 1, and the other state diagram of the crawler crane is shown in fig. 2.
The self-loading and unloading crane provided by the embodiment of the invention comprises a host 1, an arm support 2 and a rotatable lifting lug 3, wherein the arm support 2 comprises a lower section arm 21, an upper section arm 23 and a plurality of first middle section arms 22. The first end of the lower joint arm 21 is rotatably connected with the host 1, two ends of the first middle joint arm 22 are respectively detachably connected with the second end of the lower joint arm 21 and the upper joint arm 23, and one end of the rotatable lifting lug 3 is connected with the second end of the lower joint arm 21. The second end of the rotatable lifting lug 3 is used for lifting the first intermediate knuckle arm 22 or the upper knuckle arm 23 when loading and unloading the boom 2. Wherein, at least one longitudinal bar of each first middle section arm 22 is provided with a plurality of first connecting pieces 221; when the arm support 2 is in a transportation state, the first connecting piece 221 of one first middle joint arm 22 is connected with the first connecting piece 221 of the other first middle joint arm 22 in a one-to-one correspondence.
When the arm support is assembled, the lower arm 21, the first middle arm 22 and the upper arm 23 are required to be connected in sequence; when loading, the first middle section arm 22 and the upper section arm 23 are lifted to the transport vehicle 5 from the bottom surface through the host 1 and the lower section arm 21; during unloading, the first middle section arm 22 and the upper section arm 23 are lifted from the transport vehicle 5 to the ground through the main machine 1 and the lower section arm 21. The rotatable lifting lug 3 is used for lifting the first intermediate knuckle arm 22 and the upper knuckle arm 23 in the above-described process. Before loading, the plurality of first intermediate section arms 22 and the upper section arms 23 are bundled together to form a boom set, and the first connecting piece 221 is used for connecting the two first intermediate section arms 22 in the process.
Specifically, the step of assembling the arm support is that the host 1 moves to the side of the first middle section arm 22 or the lower section arm 21 to be assembled, and the rotatable lifting lug 3 is positioned above the section arm to be assembled, and the rotatable lifting lug 3 is manually connected with the section arm to be assembled. The lower joint arm 21 lifts the joint arm to be assembled upwards in an amplitude-variable manner, and in the lifting process, the joint arm to be assembled can be manually stirred to rotate until the length direction of the joint arm is perpendicular to the length direction of the lower joint arm 21, so that the end part of the joint arm is prevented from colliding with the lower joint arm 21; or directly from the side in the length direction of the joint arm to be assembled. After the main machine 1 lifts the section arm to be assembled to the upper part of the designated position, the lower section arm 21 downwards swings to lower the section arm to be assembled, and in the lowering process, the section arm to be assembled is manually stirred to rotate to the designated position. The designated position and the designated orientation of the joint arm to be assembled are the position and the orientation of the joint connector of the joint arm to be assembled, which can be butted with the joint connector of the adjacent joint arm to be assembled, as shown in fig. 1.
As shown in fig. 2, after the first middle arm 22 and the upper arm 23 are connected through the above steps, the host 1 moves to one end of the first middle arm 22 far away from the upper arm 23, so that the lower arm 21 is bent down and the connection joint at the second end of the lower arm is butted with the connection joint at one end of the first middle arm 22 far away from the upper arm 23, and finally the whole arm support is assembled.
As shown in fig. 11 and fig. 12, when the boom is assembled, the host 1 drives the lower arm 21 to hoist other arms to a stacked state, and then the arms are manually bundled into a whole to form the hoisting boom set 6. And then lifting the lifting arm support group 6 to the transport vehicle 5. In the lifting process, the lifting arm support group 6 is manually stirred to rotate until the length direction of the lifting arm support group is perpendicular to the traveling direction of the host machine 1, so that the lifting arm support group 6 is prevented from colliding with the lower section arm 21; in the process of downwards amplitude-changing the lower section arm 21 to place the hoisting arm support group 6, the hoisting arm support group 6 is placed on the transport vehicle 5 after the hoisting arm support group 6 is manually stirred to rotate to a proper direction. When the arm frame is unloaded, the host computer 1 drives the lower section arm 21 to hoist the hoisting arm frame group 6, and after manually stirring the hoisting arm frame group 6 to rotate until the length direction of the first middle section arm 22 is vertical to the length direction of the lower section arm 21, the hoisting arm frame group 6 is hoisted to the ground, so that unloading is completed.
According to the self-loading and unloading crane provided by the embodiment of the invention, the rotatable lifting lug is arranged on the lower joint arm, and when the joint arm is assembled, the hung joint arm can be manually stirred so as to adjust the joint arm to a proper direction, so that the quick butt joint of the connecting joints of the two joint arms can be realized; when the hoisting arm support group is assembled and disassembled in the transportation vehicle, the hoisting arm support group can be manually stirred so as to be placed at a specified position in a proper direction. Compared with the traditional crane loading and unloading technology, the invention can realize the assembly and the loading and unloading of the arm support through the crane, does not need an auxiliary crane, saves engineering cost and improves engineering efficiency. In addition, in the process of loading and unloading the boom set, the direction of the boom set is regulated through the rotatable lifting lug, the main machine is not required to carry out rotation operation, and only the main machine is required to carry out walking and drive the lower-section boom to carry out up-down amplitude variation operation, so that rollover accidents possibly caused by rotation operation of the main machine are avoided.
As shown in fig. 1, in the embodiment of the present invention, at least two hanging strips 4 are connected to the other end of the rotatable lifting lug 3, one end of each hanging strip 4 is connected to the other end of the rotatable lifting lug 3, and the other end of each hanging strip 4 is used for being connected to a first middle section arm 22 or an upper section arm 23 to be lifted when the arm support 2 is assembled or disassembled.
As shown in fig. 3, which is a partial enlarged view of the portion a in fig. 1, in the embodiment of the present invention, the rotatable lifting lug 3 includes a rotatable lifting ring 31, and the rotatable lifting ring 31 is detachably connected to the lower arm 21. When the arm support is required to be assembled and disassembled, the rotary hanging ring 31 is installed on the lower section arm 21; during use of the boom, the swivel eye 31 is removed. Wherein, suspender 4 is connected with rotatory rings 31, when loading and unloading rotatory rings 31, can be with rotatory rings 31 intercommunication suspender 4 together loading and unloading. The rotating suspension ring 31 is connected to a side of the lower arm 21 close to the ground.
Specifically, the rotary ring 31 includes an upper ring 311 and a lower ring 312, where the upper ring 311 and the lower ring 312 are connected by a connecting piece 313, so that the lower ring 312 can rotate relative to the upper ring 311 with the central axis of the connecting piece 313 as a rotation center, and the upper ring 311 is detachably connected with the lower joint arm 21. Wherein strap 4 is connected to lower ring 312. When the lower joint arm 21 is hung and taken out, the lower ring body 312 is driven to rotate relative to the upper ring body 311 when the joint arm is manually shifted to rotate on the horizontal plane.
Further, the rotating ring 31 further includes a stopper for limiting the rotation angle of the lower ring 312 relative to the upper ring 311. For example, the stopper includes a vertical bar fixedly connected to the upper ring 311 and a horizontal bar fixedly connected to the lower ring 312, and the bottom end of the vertical bar is located below the rotation surface of the horizontal bar. Wherein, the horizontal pin can be personally submitted certain angle slope setting with the level, and the vertical pin can personally submit certain angle slope setting with the vertical.
Specifically, one end of the transverse bar is fixedly connected to the lower ring 312, and the other end extends in a direction away from the rotation center of the lower ring. One end of the vertical stop lever is fixedly connected with the upper ring body 311, and the other end extends downwards. The rail rod rotates around the central axis of the connecting piece under the drive of the rotation of the lower ring body 312, and the bottommost end of the vertical bar is positioned below the surface where the rail rod rotates, so that the rotation of the vertical bar to the rail rod forms a barrier to limit the rotation angle of the lower ring body 312. Therefore, when the joint arm is manually stirred, the safety accident caused by overlarge rotation angle of the joint arm can be prevented.
Of course, the vertical bar may be fixedly connected with the lower ring 312, and the horizontal bar is fixedly connected with the upper ring 311, and the top end of the vertical bar is located above the rotation surface of the horizontal bar. The vertical bar rotates around the central axis of the connecting piece under the driving of the rotation of the lower ring body 312, and the uppermost end of the vertical bar is positioned above the surface where the horizontal bar rotates, so that the rotation of the horizontal bar to the vertical bar forms a barrier to limit the rotation angle of the lower ring body 312.
In the embodiment of the invention, the rotatable lifting lug 3 further comprises a shackle 32, the shackle 32 comprises a shackle body and a shackle pin, the lower section arm 21 is provided with a connecting lug plate 211, and the shackle pin is inserted into the shackle body and the connecting lug plate 211, so that the shackle body can rotate around the shackle pin relative to the connecting lug plate 211. Specifically, the board surface of the connection lug plate 211 is parallel to the vertical surface, a first mounting hole is formed in the connection lug plate 211, a second mounting hole is formed in the shackle body, and the shackle body comprises two oppositely arranged connecting arms. The connecting lug plate 211 is located between the two connecting arms, and the shackle pin is arranged through the first mounting hole and the second mounting hole, so that the shackle body is hung on the lower section arm 21 through the shackle pin.
Wherein the axis of the shackle pin is parallel to the horizontal plane, so that the shackle 32 can rotate on the vertical plane relative to the lower arm 21 when the lower arm 21 changes amplitude up and down. Further, the axis of the shackle pin is perpendicular to the center line of the lower arm 21 in the longitudinal direction, so that when the lower arm 21 performs upper and lower luffing, the rotation plane of the shackle 32 with respect to the connecting lug plate 211 is parallel to the upper and lower luffing plane of the lower arm 21. This is more advantageous for handling operations during self-loading and unloading.
Fig. 5 is a schematic diagram showing a stacking state of a hoisting arm support set of the self-loading and unloading crane. The two first middle section arms are placed side by side and connected and fixed, the crawler crane provided by the embodiment of the invention further comprises a connecting plate 222 and a pin shaft 223, the first connecting piece 221 comprises an ear plate arranged on the first middle section arm 22, and two ends of the connecting plate are respectively connected with the ear plates corresponding to the two first middle section arms 22 through the pin shaft 223. Fig. 6 is a schematic diagram of the connection structure of the first connection members of the two first intermediate joint arms. After the arm support 2 is disassembled, one end of the connecting plate 222 can be connected to the lug plate of one first middle section arm 22 through a pin shaft 223, the lug plate of the other first middle section arm 22 corresponds to the lug plate of the first middle section arm 22 during transportation, and then the other end of the connecting plate 222 is connected with the lug plate of the other first middle section arm 22 through another pin shaft 223, so that the transportation assembly of the two first middle section arms 22 is realized.
When the arm support 2 is in a transportation state, a plurality of first middle section arms 22 can be placed side by side, and the first connecting pieces 221 on the two adjacent first middle section arms 22 are connected in a one-to-one correspondence manner, so that the hoisting of the arm support group is facilitated, and the arm support is prevented from being damaged due to collision between the adjacent section arms in the transportation process.
Further, the cross section of the first middle section arm 22 is rectangular, when the two first middle section arms 22 are arranged side by side, the adjacent longitudinal rods of the two first middle section arms 22 positioned below are connected through the first connecting piece 221, and a plurality of rubber pads are arranged on the adjacent longitudinal rods positioned above and used for binding the two longitudinal rods by using a binding belt at the rubber pads during lifting.
As shown in fig. 4, in the embodiment of the present invention, the boom 2 further includes a second middle arm 24 and a transition arm 25, two ends of the transition arm 25 are detachably connected to the first middle arm 22 and the second middle arm 24, an upper end of the lower arm 21 is detachably connected to an end of the first middle arm 22 away from the transition arm 25, an upper arm 23 is detachably connected to an end of the second middle arm 24 away from the transition arm 25, and the second middle arm 24 can be nested inside the first middle arm 22 when the boom 2 is in a transportation state.
Wherein the cross-sectional shape of the first intermediate knuckle arm 22 may be the same as or different from the cross-sectional shape of the second intermediate knuckle arm 24. For example, the first intermediate knuckle arm 22 and the second intermediate knuckle arm 24 are each rectangular in cross-section, with the first intermediate knuckle arm 22 having a cross-sectional frame inner dimension that is greater than the cross-sectional frame outer dimension of the second intermediate knuckle arm 24. Alternatively, the first intermediate knuckle arm 22 may have a rectangular cross section and the second intermediate knuckle arm 24 may have a triangular cross section, provided that the second intermediate knuckle arm 24 is capable of nesting within the first intermediate knuckle arm 22.
The cross section of the transition joint arm 25 for connecting the first end of the first intermediate joint arm 22 is the same size and shape as the cross section of the first intermediate joint arm 22; the cross section of the transition section arm 25 for connecting the second end of the second intermediate section arm 24 is the same size and shape as the cross section of the second intermediate section arm 24, the cross section of the transition section arm 25 gradually decreasing from the first end to the second end.
As shown in fig. 4, the boom for transporting the single-arm crawler crane according to the embodiment of the present invention includes two first middle knuckle arms 22 and two second middle knuckle arms 24. When the single-arm crawler crane is transported, the two second middle section arms 24 can be respectively sleeved in the two first middle section arms 22, and then the upper section arm 23, the transition section arm 25 and other section arms with smaller occupied space are placed above the first middle section arms 22, so that the transportation space of the two second middle section arms 24 can be saved.
The first intermediate arm 22 and the lower arm 21 may be directly or indirectly connected, and the second intermediate arm 24 and the upper arm 23 may be directly or indirectly connected. The number of first intermediate link arms 22 and second intermediate link arms 24 may be plural. In the embodiment of the present invention, the number of the first intermediate section arms 22 is not less than the number of the second intermediate section arms 24, so as to ensure that each of the second intermediate section arms 24 can be nested in the first intermediate section arm 22. Further, the number of first intermediate knuckle arms 22 is equal to the number of second intermediate knuckle arms 24, so that the greater the boom length, the greater the number of first intermediate knuckle arms 22 and second intermediate knuckle arms 24, the greater the space saving ratio.
Wherein the length of the first intermediate knuckle arm 22 is not less than the length of the second intermediate knuckle arm 24. When the length of the first middle joint arm 22 is equal to the length of the second middle joint arm 24, the transport volume can be reduced to the greatest extent after the nesting assembly under the condition of a certain arm support length. Of course, the lengths of the first intermediate link arm 22 and the second intermediate link arm 24 may be less than a minimum, as long as the second intermediate link arm 24 is ensured to be stably nested in the first intermediate link arm 22.
According to the single-arm crawler crane provided by the embodiment of the invention, the transition joint arms are arranged on the arm support, so that the middle joint arms connected with the two ends of the transition joint arms can be mutually nested and assembled, when the length of the arm support is longer, a larger transportation space can be saved in a nested and assembled mode after the arm support is disassembled in the transportation process, and the crane needing two transportation vehicles for transportation originally can simultaneously transport the host and the arm support by only one transportation vehicle.
Further, the number of the transition joint arms 25 in the single-arm crawler crane provided by the invention is a plurality. The two ends of each transition joint arm 25 are connected with a large-section middle joint arm close to the lower joint arm 21 and a small-section middle joint arm close to the upper joint arm 23, so that the middle joint arms connected with the two ends of each transition joint arm 25 can be mutually nested and assembled. The plurality of transition joint arms 25 in the direction from the lower joint arm 21 to the upper joint arm 23 decrease in size in sequence. In this embodiment, by providing a plurality of transition joint arms 25, the transport volume can be further reduced, and a crane for transporting a longer arm frame can be realized by a single crane.
In the embodiment of the present invention, the first middle joint arm 22 is provided with a plurality of second connectors 224, the outer side of the transition joint arm 25 is provided with a plurality of third connectors 251, and when the arm support 2 is in a transportation state, the plurality of second connectors 224 are connected with the plurality of third connectors 251 in a one-to-one correspondence. Fig. 7 is a partially enlarged view of the portion B in fig. 5. The second connecting piece 224 includes an ear plate mounted on the first middle joint arm 22, and the third connecting piece 251 includes an ear plate mounted on the transition joint arm 25, where the second connecting piece 224 and the third connecting piece 251 are connected by a pin. Due to the uneven width of the transition joint arms 25, there may be differences in the connection structure or manner of the second and third connectors 224, 251 of the first intermediate joint arms 22 and the transition joint arms 25 at different connection points.
The outer sides of the transition joint arms 25 and the first intermediate joint arms 22 are connected through the second connecting piece and the third connecting piece, so that the transition joint arms 25 can be prevented from shaking on the first intermediate joint arms 22 in the transportation process. Wherein the upper arm 23 may also be provided with a corresponding connection for connection with a second connection. The second connector may be disposed outboard of the longitudinal or transverse bar of the first intermediate knuckle arm 22.
Further, when the boom 2 is in a transportation state, the connection joint of the transition joint arm 25 for connecting the second middle joint arm 24 and the connection joint of the upper joint arm 23 for connecting the second middle joint arm 24 are mutually matched and connected. In this way, only the third connecting piece may be provided on the transition joint arm 25, and when transporting and assembling, the upper joint arm 23 is connected with the transition joint arm 25, and then connected with the first intermediate joint arm 22 as a whole through the third connecting piece on the transition joint arm 25.
In the embodiment of the present invention, a roller device is disposed on an inner side surface of the first middle arm 22, and the second middle arm 24 is slidably nested in the first middle arm 22 through the roller device. Specifically, the roller device includes a rotating shaft and a roller, the rotating shaft is fixed on two opposite longitudinal bars on one side of the first middle section arm 22, and the roller is rotatably mounted on the rotating shaft. The plurality of roller means are aligned longitudinally of the first intermediate link arm 22 with the spacing between the two opposing roller means being equal to the spacing between the two longitudinal bars of the second intermediate link arm 24 such that the two longitudinal bars of the second intermediate link arm 24 can roll on the rollers when the second intermediate link arm 24 is nested into the first intermediate link arm 22.
Further, the inner side of the first middle arm 22 and the outer side of the second middle arm 24 are also connected and fixed by a connecting piece, so as to prevent the second middle arm 24 from being separated from the first middle arm 22. Specifically, a fifth connecting piece is disposed on the bottom cross bar of the first middle joint arm 22, and the fifth connecting piece and the connecting joint at the end of the second middle joint arm 24 can be mutually matched and fixedly connected through a pin shaft.
In the embodiment of the present invention, the boom 2 further includes a third intermediate knuckle arm 26, and the length of the third intermediate knuckle arm 26 is not greater than the length of the first intermediate knuckle arm 22. After the upper joint arm 23 and the transition joint arm 25 are placed above one first middle joint arm 22, there is space above the other first middle joint arm 22, and at this time, the third middle joint arm 26 is placed there, so as to make the most use of the transportation space. Wherein a sixth connector is provided on the third intermediate arm 26 for connecting with a second connector on the first intermediate arm 22.
The invention also provides a crane transporting method for transporting the self-loading and unloading crawler crane provided by any embodiment. The crane transportation method comprises the steps of controlling a host 1 and a lower section arm 21 to load the arm support 2, and comprises the following steps:
S100, controlling the host and the lower section arms, and lifting the upper section arms and the plurality of first middle section arms to a stacked state to form a lifting arm support group.
And S200, after the host machine is controlled to travel onto the transport vehicle, connecting the rotatable lifting lug with the lifting arm support group.
S300, controlling the host machine and the lower section arm, lifting and placing the lifting arm support set at a designated position of the transport vehicle, wherein the placement orientation of the lifting arm support set is adjusted through the rotatable lifting lug.
Specifically, the control main unit 1 and the lower arm 21 stack a plurality of first intermediate arms 22 and upper arms 23 on the ground. The lifting process of any arm is as follows: first, the control main unit 1 travels to the knuckle arm side to be lifted. Then, the lower knuckle arm 21 is controlled to downwards amplitude, and after the rotatable lifting lug 3 is manually connected with the knuckle arm to be lifted, the lower knuckle arm 21 is controlled to upwards amplitude to lift the knuckle arm; in the lifting process, the lifted knuckle arm can be manually stirred to rotate until the length direction of the knuckle arm is perpendicular to the length direction of the lower knuckle arm 21, so that the end part of the knuckle arm is prevented from colliding with the lower knuckle arm 21. Then, the control host 1 drives to a stacking position in a carrying way, and the lower section arm 21 is controlled to downwards swing to place the section arm to be lifted at a specified position; in the placing process, the lifted knuckle arm can be manually stirred to rotate to a required direction, so that the running and rotation operations of the host machine 1 are reduced, and the working efficiency is improved. Wherein a suitable stacking scheme can be determined according to the length of the lower arm 21, and a suitable stacking volume is formed for the lower arm 21 to hoist.
In the stacking process, the plurality of first middle section arms 22 are connected and fixed by the plurality of first connecting pieces 221, and the upper section arm 23 and other section arms can be placed or fixed above the first middle section arms 22 by other connecting pieces to form the hoisting arm support group 6 as shown in fig. 5. The boom set 6 is then lifted in its entirety by lifting the first intermediate knuckle arm 22.
Fig. 9 is a schematic diagram of a state of a crawler crane in the crane transporting method according to the present invention, fig. 10 is a schematic diagram of a second state of the crawler crane in the crane transporting method according to the present invention, fig. 11 is a schematic diagram of a third state of the crawler crane in the crane transporting method according to the present invention, and fig. 12 is a schematic diagram of a fourth state of the crawler crane in the crane transporting method according to the present invention.
After the stacking of the hoisting arm support group 6 is completed, as shown in fig. 9, the control host 1 runs onto the transport vehicle 5 along the ladder at the tail of the transport vehicle 5, the running direction of the host 1 is the same as the length direction of the transport vehicle 5, and the arm head of the lower section arm 21 extends to the outer side of the transport vehicle 5, so that the rotatable lifting lug 3 is positioned right above the hoisting arm support group 6 on the ground. As shown in fig. 10, the rotatable lifting lug 3 is then manually connected to the set of lifting arms 6. As shown in fig. 11, the control main unit 1 and the lower arm 21 hoist the hoist arm frame group 6 to a specified position of the transport vehicle 5. As shown in fig. 12, during the placement process, the lifting arm support set 6 may be manually toggled to rotate to a desired orientation.
According to the crane transportation method provided by the invention, the crane main machine 1 and the lower section arm 21 of the crane are used for stacking the arm sections after the arm frame 2 is disassembled to form the hoisting arm frame group 6, and the hoisting arm frame group 6 is integrally loaded and unloaded without an auxiliary crane, so that the engineering cost is saved, and the engineering efficiency is improved. When the arm sections are stacked, the lifted arm sections are manually stirred so as to adjust the arm sections to proper orientations, and a plurality of arm sections are quickly stacked; when the hoisting arm support group 6 is assembled and disassembled in a transportation vehicle, the hoisting arm support group 6 is manually stirred so as to place the hoisting arm support group 6 at a specified position in a proper direction, the main machine 1 does not perform rotation operation, only walking and driving the lower joint arm 21 to perform up-and-down amplitude variation operation are performed, and rollover accidents possibly caused by rotation operation of the main machine 1 are avoided.
In step S100, the controlling the host and the lower arm, lifting the upper arm and the plurality of first intermediate arms to a stacked state to form a lifting arm frame set, includes:
controlling the host and the lower section arm to hoist a second middle section arm, so that one end of the second middle section arm is nested in the first middle section arm; pushing the second intermediate knuckle arm into the bottom of the first intermediate knuckle arm. Fig. 8 is a schematic diagram showing a state of the crawler crane provided by the invention for lifting the second middle knuckle arm. Further, the inner side of the first middle joint arm 22 and the outer side of the second middle joint arm 24 are fixedly connected through a fifth connecting piece, so as to prevent the second middle joint arm 24 from being separated from the first middle joint arm 22.
Further, in step S100, the controlling the main machine and the lower arm to hoist the upper arm and the plurality of first intermediate arms to a stacked state to form a hoist arm frame set further includes:
the control host 1 and the lower joint arm 21 hoist the second middle joint arm 24 or the transition joint arm 25, so that the connection joint of the transition joint arm 25 for connecting the second middle joint arm 24 is in butt joint with the connection joint of the upper joint arm 23 for connecting the second middle joint arm 24, as shown in fig. 5;
the connecting joint for connecting the transition joint arm 25 with the second middle joint arm 24 is connected with the connecting joint for connecting the upper joint arm 23 with the second middle joint arm 24 through a pin shaft;
after the control host 1 and the lower arm 21 hoist the transition arm 25 and the upper arm 23 to the upper part of the first intermediate arm 22, the transition arm 25 is connected and fixed with the first intermediate arm 22.
In step S100, the controlling the host and the lower arm segments, lifting the upper arm segment and the plurality of first intermediate arm segments to a stacked state to form a lifting arm support set, includes the steps of:
s101, controlling the host machine and the lower section arm, and lifting the plurality of first middle section arms to be placed side by side;
s102, connecting two adjacent first middle section arms through the first connecting piece to form a hoisting foundation.
S103, controlling the host and the lower joint arms, lifting the upper joint arms and other first middle joint arms to the upper part of the lifting foundation, and connecting and fixing the upper joint arms and other first middle joint arms with the lifting foundation.
Specifically, as shown in fig. 5, the cross section of the first middle section arm 22 is rectangular, two first middle section arms 22 are connected side by side, adjacent longitudinal rods of the two first middle section arms 22 located below are connected through a first connecting piece 221, and adjacent longitudinal rods located above are bound through a binding belt; alternatively, adjacent side rails above and below are connected by a first connector 221. Thereby achieving a firm connection of the two first intermediate joint arms 22. If the number of the first intermediate section arms 22 is greater than 2, other first intermediate section arms 22 are stacked on the hoisting foundation continuously, or a plurality of first intermediate section arms 22 are connected in a row to form the hoisting foundation. The particular stacking scheme may be determined by the length of the lower arm 21 and the amplitude of the upper and lower luffing. When the transition knuckle arms 25 and the second intermediate knuckle arms 24 are present, then the second intermediate knuckle arms 24 are nested within the first intermediate knuckle arms 22 after the connection of a row of first intermediate knuckle arms 22 is completed. The upper joint arm 23 and the transition joint arm 25 are stacked above the first middle joint arm 22 of the uppermost layer and are fixedly connected with the first middle joint arm 22.
In step S200, after the host computer is controlled to travel onto the transport vehicle, the rotatable lifting lug is connected with the lifting arm frame set, including:
s201, controlling the transport vehicle to run until the tail of the transport vehicle is opposite to the hoisting arm support group, and enabling the rotatable lifting lug to be positioned right above the hoisting arm support group;
s202, controlling the lower knuckle arm to downwards amplitude until the rotatable lifting lug and the lifting arm support group can be connected.
As shown in fig. 9, the main machine 1 and the lower arm 21 travel in a reverse manner on the carrier vehicle without load, and the lower arm 21 is extended out of the vehicle tail of the carrier vehicle; of course, it is also possible to travel forward onto the transport vehicle and then rotate the lower arm 21 180 °. Wherein, during forward running, the lower arm 21 is positioned in front of the running direction of the host machine 1; when traveling in reverse, the lower arm 21 is positioned rearward of the traveling direction of the main unit 1. As shown in fig. 10, the tail of the transport vehicle 5 is opposite to the lifting arm frame set 6, and the rotatable lifting lug 3 on the lower knuckle arm 21 is located right above the lifting arm frame set 6. The lower knuckle arm 21 is controlled to downwards amplitude, and the rotatable lifting lug 3 is connected with the lifting arm support group 6 by manpower.
In step S300, the controlling the host and the lower arm to hoist the hoisting arm frame set to a designated position of the transport vehicle specifically includes:
S301, controlling the lower arm to upwards amplitude to hoist the hoisting arm support group;
s302, controlling the host to drive on the transport vehicle in a carrying way until the hoisting arm support group is positioned right above the appointed position of the transport vehicle;
s303, controlling the lower section arm to downwards amplitude, and after stirring the lifting arm support group to rotate until the length direction of the first middle section arm is parallel to the running direction of the host, placing the arm support group at the appointed position.
As shown in fig. 11, after the rotatable lifting lug 3 is connected with the lifting arm frame set 6, the lower knuckle arm 21 is controlled to be upwardly variable in amplitude, and the lifting arm frame set 6 is lifted. The control host 1 continues to travel a certain distance towards the head direction of the transport vehicle 5, so that a placing space is reserved for the hoisting arm support group 6. Then, the lower knuckle arm 21 is controlled to downwards amplitude, and in the amplitude-changing process, as shown in fig. 12, the hoisting arm support set 6 is manually stirred to rotate until the length direction of the first middle knuckle arm 22 is parallel to the length direction of the transport vehicle 5, so as to adapt to the transport space. And finally, placing the hoisting arm support group 6 on the transport vehicle 5. Finally, the lower section arm 21 is controlled to lie down on the hoisting arm support group 6, and loading of the whole crane is completed. When the lower arm 21 is suspended with the boom unit 6, the host 1 only performs a traveling motion along the longitudinal direction of the transport vehicle 5 and drives the lower arm 21 to perform an up-and-down luffing motion, and does not drive the lower arm 21 to rotate.
The crane transportation method provided by the invention further comprises the step of controlling the host and the lower section arm to unload the arm support, and comprises the following steps:
the lower knuckle arm is controlled to upwards amplitude to hoist the hoisting arm support set;
controlling the host machine to drive to the tail of the transport vehicle in a carrying way;
the lower knuckle arm is controlled to downwards swing until the hoisting arm support group is placed on the ground;
and after the transport vehicle is controlled to travel forward for a set distance, the host machine is controlled to travel down the transport vehicle.
Specifically, during unloading, the lower section arm 21 is controlled to hoist the hoisting arm support group 6, and the hoisting arm support group 6 is manually stirred to rotate until the length direction of the first middle section arm 22 is perpendicular to the length direction of the lower section arm 21. The control host 1 and the lower section arm 21 hoist the hoisting arm support group 6 to the tail part of the transport vehicle 5, so that the hoisting arm support group 6 is positioned right above the ground behind the transport vehicle. Then the lower knuckle arm 21 is controlled to downwards swing to place the hoisting arm support group 6 on the ground. And controlling the transport vehicle to travel forwards for a set distance so as to leave enough getting-off space of the crane. Finally, after the lower section arm 21 is controlled to upwardly change the amplitude by a set angle, the control host 1 drives down the transport vehicle along the ladder, and finally the unloading is completed.
The crane transportation method provided by the invention further comprises the steps of connecting the host 1 with client equipment such as a mobile phone in a communication way, installing an APP capable of receiving user instructions on the mobile phone, and then sending control instructions to the host 1 through the mobile phone so as to control the host 1 to run and the lower arm 21 to perform up-down luffing.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The crane transportation method is used for transporting the crawler crane and is characterized by comprising a host, an arm support and a rotatable lifting lug, wherein the arm support comprises a lower joint arm, an upper joint arm and a plurality of first middle joint arms, the first ends of the lower joint arms are rotatably connected with the host, the two ends of the first middle joint arms are respectively detachably connected with the second ends of the lower joint arms and the upper joint arms, and one end of the rotatable lifting lug is connected with the second ends of the lower joint arms; at least one longitudinal rod of each first middle joint arm is provided with a plurality of first connecting pieces;
the crane transportation method comprises the steps of controlling the host and the lower section arm to load the arm support, and comprises the following steps:
The host machine and the lower section arms are controlled, the upper section arms and the plurality of first middle section arms are lifted to a stacked state to form a lifting arm support group, wherein the two first middle section arms are placed side by side and are connected in one-to-one correspondence through the first connecting pieces to form a lifting foundation, and the upper section arms and the other first middle section arms are stacked above the lifting foundation and are fixed on the lifting foundation;
after the host machine is controlled to travel onto the transport vehicle, the rotatable lifting lug is connected with the lifting arm support group, and the method specifically comprises the following steps of: controlling the transport vehicle to run to a side of the tail of the transport vehicle, which is opposite to the length direction of the hoisting arm support group, so that the rotatable lifting lug is positioned right above the hoisting arm support group; the lower knuckle arm is controlled to downwards amplitude until the rotatable lifting lug and the lifting arm support group can be connected;
the host and the lower section arm are controlled, the lifting arm support group is lifted and placed at a designated position of the transport vehicle, and the method specifically comprises the following steps: the lower knuckle arm is controlled to upwards amplitude to hoist the hoisting arm support set; controlling the host to drive on the transport vehicle towards the direction of the vehicle head in a carrying way until the hoisting arm support group is positioned right above the designated position; the lower section arm is controlled to downwards amplitude, and after the lifting arm support group is stirred to rotate until the length direction of the first middle section arm is parallel to the running direction of the host, the arm support group is placed at the appointed position; the traveling direction of the host on the transport vehicle is the same as the length direction of the transport vehicle, and the placement direction of the hoisting arm support group is adjusted through the rotatable lifting lug.
2. The crane transporting method according to claim 1, wherein the controlling the main frame and the lower arm to hoist the upper arm and the plurality of first intermediate arms to a stacked state to form a hoist arm frame group includes:
controlling the host and the lower section arm to hoist a second middle section arm, so that one end of the second middle section arm is nested in the first middle section arm; pushing the second intermediate knuckle arm into the bottom of the first intermediate knuckle arm.
3. The crane transporting method according to claim 1, wherein the controlling the main frame and the lower arm to hoist the upper arm and the plurality of first intermediate arms to a stacked state to form a hoist arm frame group includes:
controlling the host and the lower section arms, and lifting the plurality of first middle section arms to be placed side by side;
connecting two adjacent first middle section arms through the first connecting piece to form a hoisting foundation;
and controlling the host and the lower joint arms, lifting the upper joint arms and other first middle joint arms to the upper part of the lifting foundation, and connecting and fixing the upper joint arms and other first middle joint arms with the lifting foundation.
4. The crane transport method of claim 1, further comprising controlling the host and the lower arm to unload the boom, comprising the steps of:
the lower knuckle arm is controlled to upwards amplitude to hoist the hoisting arm support set;
controlling the host machine to drive to the tail of the transport vehicle in a carrying way;
the lower knuckle arm is controlled to downwards swing until the hoisting arm support group is placed on the ground;
and after the transport vehicle is controlled to travel forward for a set distance, the host computer is controlled to travel down the transport vehicle.
5. The crane transporting method according to claim 1, further comprising a connecting plate and a pin, wherein the first connecting piece comprises an ear plate mounted on the first middle section arm, and when the arm support is in a transporting state, two ends of the connecting plate are respectively connected with the ear plates corresponding to the two first middle section arms through the pin.
6. The crane transporting method according to claim 1, wherein the arm frame further comprises a second intermediate arm and a transition arm, two ends of the transition arm are detachably connected with the first intermediate arm and the second intermediate arm respectively, an upper end of the lower arm is detachably connected with one end of the first intermediate arm far away from the transition arm, an upper arm is detachably connected with one end of the second intermediate arm far away from the transition arm, and when the arm frame is in a transporting state, the second intermediate arm can be sleeved inside the first intermediate arm in an embedding manner.
7. The crane transporting method according to claim 6, wherein the first middle joint arm is provided with a plurality of second connecting pieces, a plurality of third connecting pieces are arranged on the outer side of the transition joint arm, and the plurality of second connecting pieces are connected with the plurality of third connecting pieces in a one-to-one correspondence manner when the arm frame is in a transporting state.
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