CN1019565B - Foldable crane with jib of two or three hinged parts - Google Patents
Foldable crane with jib of two or three hinged partsInfo
- Publication number
- CN1019565B CN1019565B CN 90100710 CN90100710A CN1019565B CN 1019565 B CN1019565 B CN 1019565B CN 90100710 CN90100710 CN 90100710 CN 90100710 A CN90100710 A CN 90100710A CN 1019565 B CN1019565 B CN 1019565B
- Authority
- CN
- China
- Prior art keywords
- crane arm
- crane
- joint
- pulley
- arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Images
Abstract
The present invention relates to a crane which can be folded. The present invention is provided with a distribution type boom (11) which is hinged with the top end of a support column (7), and the boom (11) is composed of two or three sections (12, 13, 14) which are mutually hinged. A group of two supporting frames (16, 36) and a tie rod (38) respectively supports the top section (14) and the bottom section (12) of the three-section boom, a rear diversion rope is connected with the top end of the rear supporting frame (16) and a rotating chassis to maintain the balance of the boom (11). The present invention is also provided with a mechanically operated folding and unfolding steel rope (61) of the boom, and the steel rope is wound on a capstan (61) and is connected with the second section (13) and the bottom section of the boom through the supporting frames (16, 36).
Description
The present invention relates to a kind of Foldable crane, the hoisting crane of retractable supports post is especially arranged.This hoisting crane is equipped with one with pillar stiffener top pivotally attached with in working order down by the distribute type crane arm of the dolly distribute loads that disposes.Crane arm is made of two joints that are hinged or three joints.The present invention be more particularly directed to make crane arm folding, crane arm is launched and be in the device of horizontality along pillar stiffener.
Aspect a kind of hoisting crane with retractable supports post, known have various correspondingly fully automatically folding and deployed device of crane arms that also make when telescoping shoring post shrinks and stretches out.This in the process that pillar stiffener stretches out, will pin down the rope tensioning often behind the crane arm, impel crane arm to launch.For example, No. 2306158 patents of France are exactly like this.In this case.Motion of each joint of crane arm is continuous, is immutable in the space and depends on the displacement of telescoping shoring post, and this needs enough open space, just certain height will be arranged on the ground.
Known also have a kind of structure, after pin down between the swivel base of rope and supporting pillar stiffener an assembly pulley be set.For example, No. 2550176 patents of France are exactly like this.Assembly pulley is controlled by capstan winch is installed, no matter the state that support is stretched out how, all can be realized the folding of crane arm or launch.But this folding and launch only to rely on the back pulley group, limit the possibility that relative position changes between each joint of crane arm when handling, thereby limited the degree of flexibility of using.
For this reason, the purpose of this invention is to provide a kind of folding hoisting crane, it has the folding and expanding unit of a kind of crane arm, especially by means of a crane arm lifting assembly pulley, will to after pin down the control of rope and another kind independently tracker action combine, this tracker action directly acts on crane arm, makes the folding of crane arm and launches independently to carry out and do not depend on the state that stretches out of pillar stiffener.According to hoisting crane environment of living in, each joint of crane arm can have the possibility of multiple mutual configuration, thereby has overcome above-mentioned all inconveniences.
In addition, this device can partly or entirely fold crane arm and remains static, and this mainly is in order to reduce wind action or can be in the K/UP state and will pillar stiffener not shrink or hoisting crane is folded up fully in limited space.Like this can big time saver and improve safety rate.
To achieve these goals, Foldable crane of the present invention comprises a particularly telescopic pillar stiffener by swivel base supporting; Be equipped with one with the top of pillar stiffener distribute type crane arm hinged and that constitute by two joints that are hinged or three joint crane arms; And a pack support and tension member are arranged, respectively in order to the epimerite and the crane arm coxopodite of supporting three-section type crane arm, and preferably be equipped with power operated crane arm lifting assembly pulley after pin down Suo Ze and connect the top of after poppet and swivel base to keep the balance of crane arm; Also has the folding and expansion cable wire of a power operated crane arm; The feature of this hoisting crane is: power operated crane arm is folding to form an assembly pulley with launching cable wire to be connected crane arm second joint and crane arm coxopodite, the top of this assembly pulley by being contained in the after poppet on the crane arm coxopodite and the top that is contained in the front frame that crane arm second saves.
As a kind of best form of implementation of the present invention by three crane arms formed of joint, motor-driven cable wire folding and the expansion crane arm is fixed on the crane arm coxopodite, and in fitting process and under the mode of operation, constitute an assembly pulley being placed in the front frame top on crane arm second joint and being placed between the after poppet top on the crane arm coxopodite, successively by a pulley with horizontal shaft by after poppet top lateral-supporting, be bearing in a pulley on front frame top and vertical with the former axle, get back on the pulley of of being bearing on the horizontal shaft of after poppet top and first pulley coaxle along the route of symmetry again, then by being placed in one group of pulley on crane arm coxopodite and the pillar stiffener top, descending and twist in one and be positioned at the pillar stiffener bottom and launch on the capstan winch that crane arm uses along pillar stiffener again.
The present invention has adopted some favourable facilities to launch capstan winch to prevent its rotation for locking crane arm when the crane arm machine is in running order.This is to realize by a failure-free blocking device between the support on the pillar stiffener in the barrel of captan bead and outside being fixed on.At this moment crane arm folds and launches the cable wire tension member that connects the front and back support top of assembly pulley.
As an additional feature, the reel bead that crane arm launches capstan winch has many lockholes, is distributed in regularly on its periphery, so that regulate the brute force of cable wire and the degree of dip of crane arm.
As another feature, front frame and by two mutually between the preceding tie-rod that constitutes of pivotally attached rigid element form a pivotally attached leverage, no matter in working order or in installing condition, it is by means of being fixed on the lifting cable wire on the crane arm top paragraph header portion crossbeam and being locked in the dolly of crane arm second joint bottom distribute loads, with the crane arm epimerite be folded in crane arm second joint below.
， And is as an additional feature Xia above-mentioned latter event, and dolly is the bottom that is locked in crane arm second joint by means of the normal pin that is subjected to directional tagging on the dolly.Normal pin inserts in the horizontal truss of crane arm second joint, and And is remained under the lock-out state by the assembly pulley that leans below dolly.
Under the situation that crane arm only is made up of two joints, the expansion of crane arm and folding cable wire form the folding and expansion assembly pulley of a crane arm, the upper end of its direct connection crane arm second joint and the top of after poppet.
As another feature, winding up of crane arm coxopodite and crane arm second joint is should make its in tension when section at the bottom of the crane arm saves cut-off with crane arm second by assembly bonded assembly ， And and its size that has two connecting rods that are hinged at least.
As another feature, after poppet is fork-shaped, and its bottom-hinged abuts on the winding up of above-mentioned coxopodite in turnover under transportation and the installing condition at the horizontal surface Shang ， of crane arm coxopodite rear end lower edge And.
In any case, by means of Xia literary composition Miao Shu And quote appended sketch, can have more clearly the present invention and understand.Appended sketch is represented a kind of form of implementation of this Foldable crane, and this just unrestrictedly acts on as an example ， And.
Figure 1 shows that a hoisting crane of the present invention, be in folded state so that transportation.
Fig. 2 is II-II section-drawing of Fig. 1, and the relative position of each joint of pillar stiffener and crane arm is shown, and crane arm is in folded state so that transportation.
Hoisting crane shown in Figure 3, its telescopic pillar stiffener is holded up but is not stretched out.Crane arm is in folded state, after the vertical axis rotation of an assembly of being made up of crane arm second joint and crane arm epimerite, leans against on the pillar stiffener.
Some stages that Fig. 4 to 10 explanation hoisting crane is installed.
Hoisting crane shown in Figure 11, its telescopic pillar stiffener Shu Qi And stretches out, crane arm launch fully and horizontality when being in work or partially folded and make epimerite be folded in crane arm second joint below.
Figure 12 illustrates another state of hoisting crane, so that avoiding obstacles.
Figure 13 is that crane arm launches the assembly pulley sketch.
Figure 14 distributes assembly pulley and lifting assembly pulley sketch.
Figure 15 is dolly and the sketch that automatically locks system thereof.
The hoisting crane of expression in a schematic way on the figure by known style, comprises a fixing or rotatable chassis 1, and it is by directed device 2 supportings one swivel base 3, and the latter holds up and stable strut 5 and 6 with a counterweight 4 and retractable supports post 7 two.This retractable supports post 7 is made of with the interior pillar stiffener member 9 that can slide therein an outer pillar stiffener member 8.The travelling position that retractable supports post 7 can be in level as shown in Figure 1, perhaps be in hold up to plumbness shown in Fig. 3 to 11.Under plumbness, the external member 8 of pillar stiffener installs around on a horizontal shaft 10 of swivel base 3 front ends.Flexible and the blocking device (not shown figure on) of known pillar stiffener 7, can make interior pillar stiffener member 9 outside in the pillar stiffener member 8 Hua Dong And hold it in height as shown in Figure 6.But interior pillar stiffener member 9 also can be stayed in the outer pillar stiffener member 8 or occupy any midway location.
Hoisting crane is equipped with a distribute type crane arm 11, and this arm can fold and launch, and being hinged by two joints or three joints constitutes.Here as an example.Crane arm 11 is made up of three joints, is called crane arm coxopodite 12, crane arm second joint 13 and the crane arm epimerite 14 successively.
The axle 15 of crane arm coxopodite 12 on interior pillar stiffener member 9 tops is hinged, can turn down forward and along pillar stiffener 7 vertically stacked, sees Fig. 3 to 8.It has at its rear portion one the back bow 16, this support with its bottom around one 17 hinged, And the transportation and installing condition under can be folded to crane arm at the bottom of section 12 wind up above 18.The tension member that is made of a fixed length cable wire 19 connects the top 20 of support 16 and 18 the front end 21 of winding up.Pining down rope 22 after one is to be used for connecting the top 20 of support 16 and the rear portion 23 of swivel base 3.
Crane arm second joint 13 is hinged along axle 24 and crane arm coxopodite 12 roots, and axle 24 is positioned on the horizontal surface of lower edge 26 of the lower edge 25 of crane arm coxopodite 12 and crane arm second joint 13.Winding up of 18 crane arm, second joint 13 that winds up of crane arm coxopodite 12 27 linked together by an assembly 28, and assembly 28 is made up of connecting rod 29,30 and 31, and they are hinged along spools 32 and 33 each other.The connecting rod 29 at two ends and 31 with their opposite free ends respectively with crane arm coxopodite 12 on point 34 and the point 35 on crane arm second joint 13 be hinged, crane arm second joint 13 has a bow 36 in its front portion, its bottom can be folded into transportation and installing condition along one 37 forward with the hinged ， And of crane arm second joint.A rigid tie bar 38 is made of two parts 39 and 40, and they are 41 hinged at point each other, and tie-rod 38 is connected the top 42 of front frame 36 with axle 43, and spools 43 are positioned at the winding up on 44 of crane arm epimerite 14.
As shown in figure 15, dolly 50 has a vertically pin 53, and it is by two block plates 54 and 55 guiding, and every block plate all has a hole 56.When assembly pulley 57 leaned below dolly 50, vertically pin 53 inserted in the horizontal truss 58 of crane arm second joint 13, so dolly 50 is fixed.Otherwise when assembly pulley 57 descended again, vertically pin 53 was deviate from from horizontal truss 58 under the effect of itself weight, and a pin 59 stops vertically pins 53 to fall, and dolly 50 promptly can move freely.
Crane assemblies has a lifting capstan winch, to transmit a capstan winch and an installation capstan winch.These are all not shown on figure.Capstan winch is installed is guaranteed holding up of telescoping shoring post 7 and stretching out of pillar stiffener 7.
In addition, especially as shown in figure 13, crane assemblies has the expansion capstan winch 60 of crane arm 11, and it is installed in the bottom of outer pillar stiffener member 8.The expansion rope 61 of crane arm is fixed on the point 62 of crane arm coxopodite 12.After installing, this Suo Yici is by by the pulley with horizontal shaft 63 of after poppet 16 tops 20 lateral-supportings, by the pulley 64 on being contained in of front frame 36 tops, the 42 supportings axle vertical with above-mentioned axle, turn back to the pulley 65 on the horizontal shaft of being contained in by after poppet 16 tops, 20 supportings, this pulley and first pulley 63 coaxial settings with the circuit of symmetry; By being installed at the bottom of the crane arm in the section 12 and the one group of pulley 66,67 on telescoping shoring post 7 tops and 68 and descend along pillar stiffener 7, between pillar stiffener member 9 and the outer pillar stiffener member 8, And is on capstan winch 60 in entering then; Like this, cable wire 61 connects the respective top 42,20 of front frame 36 and after poppet 16 and constitutes the folding and expansion assembly pulley 69 of crane arm.
At last, hoisting crane is equipped with the assembly pulley (not illustrating on the figure) of lifting crane arm 11 by known way, pins down rope 22 after it directly acts on.
Under state shown in Figure 1, telescoping shoring post 7 fell, and interior pillar stiffener member 9 enters outer pillar stiffener member 8.On the top 15 of pillar stiffener member 9, it was folding along telescoping shoring post 7 in section 12 was articulated at the bottom of the crane arm, and this two joint 13 and 14 that constitutes crane arm second joint and epimerite then folds mutually along crane arm coxopodite 12, and they are in state shown in Fig. 2 section.
From this state, the installation of hoisting crane is undertaken by following mode:
At known installation F/s (not shown on the figure), the assembly that will comprise telescoping shoring post 7 that is in contraction state and the crane arm of folding up 11 by means of the installation capstan winch is holded up, make it be in plumbness, outer pillar stiffener member 8 is locked on the swivel base 3 at point 10 places.Under this state, the assembly that will comprise crane arm second joint 13 and epimerite 14 by means of releasable each vertical axis (not shown on the figure) around 18 and 27 rotations of winding up, to reach state shown in Figure 3.
Under state shown in Figure 3, crane arm second joint 13 by a releasable horizontal shaft 70 wind up 18 with 27 horizontal surface on be connected with crane arm coxopodite 12, support 16 is rolled over and is leaned against the winding up on 18 of crane arm coxopodite 12.Dolly 50 is locked in crane arm second by pin 53 and saves 13 bottom, sells 53 assembly pulleys that leaned below dolly 50 by the tension force by lifting rope 52 and remains on its position.Attachment point 51 on the crossbeam 47 of lifting rope 52 and crane arm epimerite 14 is connected.At this moment crane arm epimerite 14 is positioned under crane arm second joint 13, and the deformable assembly that is made of support 36 and tie-rod 38 is then got parts 40 corresponding to the shape, particularly tie-rod 38 of crane arm joint 13,14 and leaned against winding up on 44 of crane arm epimerite 14.
In the subordinate phase of installing, make that pillar stiffener 7 stretches out, lifting crane arm coxopodite 12 and crane arm 11 launched, these operations are independent and unrelated; Like this, just can obtain the multiple possible mode that hoisting crane is placed mode of operation.
Fig. 4 to 10 illustrates a kind of desirable mounting means.
Hoisting crane launches capstan winch 60 with cable wire 61 from crane arm and emits in position shown in Figure 3; At this moment, the assembly pulley 69 on the top 42 by pulley 66 and 64 direct connection crane arm coxopodites 12 and front frame 36 just unclamps, under the effect of crane arm joint 13,14 weight own, 13,14 assemblies are around jointed shaft 70 rotations, the lower edge 26 of 12 lower edge 25 and crane arm second joint 13 is in contact with one another with its end at the bottom of crane arm, as shown in Figure 4.At this moment, crane arm joint 13 and 14 dolly 50 and slack-free lifting ropes 52 by locking remain on folded state.
From ground, the jointed shaft 24 that connects crane arm coxopodite 12 lower edges 25 and crane arm second joint 13 lower edges 26 is installed, cable wire 61 with assembly pulley 69 launches capstan winch 60 tensions from crane arm gently, just can loose open And and take off the axle 70 that can draw off, and then decontrol cable wire 61, just assembly 13,14 can be put into level attitude as shown in Figure 5.
The state that then by known way pillar stiffener 7 is stretched out and be rising as shown in Figure 6.
From this state, the crane arm lifting assembly pulley that pins down rope 22 after just can handling makes it be in certain deployed condition with swivelling jib assembly 11, at this moment can be at the same time or separately emit cable wire 61 and handle crane arm and launch assembly pulley 69 by launch capstan winch 60 from crane arm, with respect to crane arm coxopodite 12 around jointed shaft 24 runner assemblies 13,14; Like this, crane arm 11 can be in various state in the space, thereby the obstacle of avoiding may existing in the environment of living in is shown in Fig. 7 to 10.
Under state shown in Figure 7, pin down rope 22 after the manipulation, this cable wire is by rigid support 72 the ends pulley 71 that is supported and another pulley 73 that is bearing in upper end, crane arm coxopodite 12 back at rear portion, pillar stiffener member 9 top in being fixed on, and the top 20 with support 16 joins then.Under this effect, support 16 around hinge axis 17 rotate and hold up And by known and on figure unshowned guidance system support two strands of cable wires 61 that crane arm launches assembly pulley 69, two pulleys 63 and 65 of being supported by electric support 16 tops 20 of these two strands of cable wires at this moment.Support 16 makes cable wire 19 tensionings that pind down by hoist cable 74 gradually when rotating.Before tension member or cable wire 19 tensionings, the state that 12 maintenances of crane arm coxopodite fold along pillar stiffener 7, and the effect of 16 pairs of crane arms expansion of support assembly pulley, 69 cable wires 61 is lifted the front end of lift arm assembly 13,14.
Under state shown in Figure 8, tension member or cable wire 19 are slack-free, after pin down rope 22 and leave pulley 73, crane arm coxopodite 12 and pillar stiffener 7 begin to throw off.
Pin down rope 22 after continuing to handle, crane arm coxopodite 12 rotates around its jointed shaft 15 on interior pillar stiffener member 9, promotes lift arm assembly 11 simultaneously, as shown in Figure 9.
At this moment pin down the cable wire 61 that rope 22 and crane arm launch assembly pulley 69 after handling simultaneously, just can obtain various relative position between crane arm 11 various states and crane arm coxopodite 12 and the assembly 13,14, state is an example as shown in figure 10.
Pin down rope 22 after continuing to handle, handle the cable wire 61 that crane arm launches assembly pulley 69 until crane arm coxopodite 12 is in horizontality ， And, be tensioned until the assembly 28 of three connecting rods 29,30,31, at this moment obtain state shown in Figure 11, the crane arm epimerite is in the state A that collapses.Under this state, with after pin down rope 22 usefulness pins and be fixed on the rear portion 23 of swivel base 23.
From then on state rises, and handles cable wire 61, can continue more or less to promote lift arm assembly 13,14 with respect to section at the bottom of the crane arm 12.For example, in order to avoid an obstacle or because the space is very narrow crane arm to be placed K/UP state-see Figure 12, this moment, crane arm top section 14 was in state shown in the long and short dash line.
Under dolly 50 is fixed on situation on crane arm second joint 13 all the time, remove the braking of lifting capstan winch, crane arm epimerite 14 rotates and decline ， And drive lifting cable wire 52 around its cardan axle 45 with crane arm second joint 13 under the effect of himself weight.When dropping to the end, the own wt of crane arm epimerite 14 no longer produces enough strength to lifting cable wire 52, and at this moment assembly pulley 57 also just descends under the effect of himself weight, can carry out later operation until reaching a certain position.At this moment obtain state shown in Figure 11, the crane arm epimerite is in the state B that poises.
Launch capstan winch 60 by crane arm and roll cable wire 61, handle and at this moment to connect the fixing top 20 of support 16 and the assembly pulley 69 on support 36 tops 42, make support 36 rotate and hold up And and drive crane arms top section 14 by means of two parts 39,40 of tie-rod 38 and rotate, at this moment lifting cable wire 52 maintenance relaxation states around its jointed shaft 45 with crane arm second joint 13 around its jointed shaft 37.In operation at the end, crane arm epimerite 14 is in other part cut-ofves of horizontality ， And and crane arm 11, so obtain state shown in Figure 11, the crane arm epimerite is in position c.
From this state, can continue to handle cable wire 61, further lifting crane arm epimerite 14, until leaning on crane arm second joint 13, and then with respect to crane arm coxopodite 12 lift assemblies 13,14, for example, just can make this operation-see Figure 12 in order to avoid a certain obstacle in the course of the work, this moment, the crane arm epimerite 14 was in position shown in the solid line.
In working order down, crane arm launches capstan winch 60 and is pinned and can not be rotated by a failure-free lockout mechanism between the support on its reel bead and the pillar stiffener external member 8, and the cable wire 61 that makes crane arm launch assembly pulley 69 becomes the top 42 that connects crane arm 11 front frames 36 and the tension member on after poppet 16 tops 20.Can establish many pin-and-holes on the reel bead of crane arm expansion capstan winch 60, pin-and-hole distributes around bead regularly, in order to the tension force of adjustment cable wire 61 and the degree of dip of crane arm 11.
So just, obtain having the Foldable crane of horizontal distribute type crane arm 11, its crane arm exactly is 12,13 and epimerite 14, and they are static balances.
Self-evident, carry out opposite operation, hoisting crane just can be folded up fully.
Hence one can see that, no matter pillar stiffener 7 stretches out and is under what state, even in the process of stretching out, crane arm 11 can lifting and expansion.Particularly after pin down under the situation that does not have crane arm lifting assembly pulley on the rope 22, stretching out at first after between the rear portion 23 of the top 20 of after poppet 16 and swivel base 3 of pillar stiffener 7 pins down rope 22 tensionings, then along with crane arm 11 is launched the operation of assembly pulleys 69, make crane arm 11 liftings and get to a certain degree deployed condition.
Certainly, the invention is not restricted to a kind of form of the crane arm Foldable crane above narrated as an example.On the contrary, it comprises the various modification that draw according to principle of uniformity.Especially can adopt a kind of device of simplification, 11 of crane arms are made up of two joints in this case, at this moment pulley 64 directly are fixed on crane arm second and save 13 and wind up on 27 the end 75.Clearly, in this case, no longer need crane arm epimerite 14, support 36 and tie-rod 38, crane arm launches assembly pulley 69 and directly is contained between the top 20 and crane arm second joint 13 of after poppet 16.
Claims (9)
1, a kind of Foldable crane comprises a particularly telescopic pillar stiffener (7) by a swivel base (3) supporting; Be equipped with one with the top of pillar stiffener (7) distribute type crane arm (11) hinged and that constitute by two joints that are hinged or three joint crane arms (12,13,14); And a pack support (16 is arranged, 36) and tension member (19,38), respectively in order to epimerite (14) and the crane arm coxopodite (12) of supporting three-section type crane arm (11), preferably be equipped with power operated crane arm lifting assembly pulley after pin down rope (22) and then connect the top (20) of after poppet (16) and swivel base balance with maintenance crane arm (11); Also has the folding and expansion cable wire (60,61) of a power operated crane arm; The feature of this hoisting crane is: the folding and expansion cable wire (60 of power operated crane arm, 61) connect crane arm second joint (13) and crane arm coxopodite (12) and form an assembly pulley (69), this assembly pulley is by top (20) that is contained in the after poppet (16) on the crane arm coxopodite (12) and the top (42) that is contained in the front frame (36) on crane arm second joint (13).
2, Foldable crane according to claim 1, it is characterized in that: by three joints (12,13,14) the folding and expansion cable wire (61) of the power operated crane arm of Zu Chenging fixing (at point 62 places) is on crane arm coxopodite (12), and in working order down in the installation process neutralization, between the top (20) that is placed in the front frame (36) on crane arm second joint (13), constitute an assembly pulley (69), cable wire is successively by supporting its pulley (64) perpendicular to last axle by the pulley with horizontal over glaze (63) of after poppet (16) top (20) lateral-supporting with by front frame (36) top (42), get back on the pulley (65) of the band horizontal shaft that supports on after poppet (16) top (20) with the route of symmetry again, this pulley and the coaxial setting of first pulley (63), then by being installed in one group of pulley (66 on crane arm coxopodite (12) and pillar stiffener (7) top, 67,68), descend along pillar stiffener (7) again, and twist on the crane arm expansion capstan winch (60) that is positioned at pillar stiffener (7) bottom.
3, according to the Foldable crane of claim 2, it is characterized by: when hoisting crane is in running order, by being positioned at capstan winch (60) reel bead and being fixed on failure-free lockout mechanism between the support on the outer dagger member (8), stop crane arm to launch the rotation of capstan winch 60, thereby make the folding and cable wire (61) that launches assembly pulley (69) of crane arm with the tension member that connects front and back support (36,16) top (42,20).
4, according to the Foldable crane of claim 3, it is characterized by: the reel bead that crane arm launches capstan winch (60) has many pin-and-holes that are distributed in regularly on its periphery, so that regulate the tension force of cable wire (61) and the degree of dip of crane arm (11).
5, the Foldable crane that requires according to arbitrary top in the claim 1 to 4, it is characterized by: front frame (36) and by two rigid elements that are hinged (39,40) the preceding tie-rod (38) that constitutes forms the pivotally attached leverage, no matter in working order or under installing condition, by means of fixing (at point 51 places) on crane arm epimerite crossbeam (47) lifting cable wire (52) and be locked in the distribution dolly (50) of crane arm second joint (13) bottom, can make crane arm epimerite (14) be folded in crane arm second save (13) below.
6, according to the Foldable crane of claim 5, it is characterized by: the dolly (50) in crane arm second joint (13) bottom is locked by normal pin (53), this pin receives directional tagging on dolly (50), insert in the horizontal truss (58) of crane arm second joint (13), and remain on lock-out state by the assembly pulley (57) that leans below dolly (50).
7, according to the Foldable crane of claim 1, it is characterized by: save the crane arm that constitutes by two and fold and launch the folding and expansion assembly pulley (69) of cable wire (61) formation crane arm, its direct connection crane arm second saves the upper end (75) of (13) and the top (20) of after poppet (16).
8, according to the Foldable crane of claim 1, it is characterized by: crane arm coxopodite (12) and crane arm second joint (13) wind up (18 accordingly, 27) by having two connecting rods (29 at least, 30,31) assembly (28) connects, these connecting rods are hinged, and its size makes its in tension when crane arm coxopodite (12) and crane arm second joint (13) cut-off.
9, according to the Foldable crane of claim 1, it is characterized by: after poppet (16) is fork-shaped, its bottom (at point 17 places) is hinged on the horizontal surface of crane arm coxopodite (12) rear end lower edge (25), and under transportation and installing condition, can turn down on wind up (18) that abut in crane arm coxopodite (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100710 CN1019565B (en) | 1990-02-14 | 1990-02-14 | Foldable crane with jib of two or three hinged parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100710 CN1019565B (en) | 1990-02-14 | 1990-02-14 | Foldable crane with jib of two or three hinged parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1054051A CN1054051A (en) | 1991-08-28 |
| CN1019565B true CN1019565B (en) | 1992-12-23 |
Family
ID=4876772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90100710 Expired CN1019565B (en) | 1990-02-14 | 1990-02-14 | Foldable crane with jib of two or three hinged parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019565B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962156B (en) * | 2010-10-18 | 2012-04-04 | 南京工业大学 | Foldable fast-loading tower crane |
| CN102344092B (en) * | 2011-09-14 | 2013-02-13 | 哈尔滨东建机械制造有限公司 | Single-rope double-suspension-point horizontal suspension arm retracting and folding mechanism |
| CN102320526B (en) * | 2011-09-14 | 2013-02-13 | 哈尔滨东建机械制造有限公司 | Self-loading and unloading foldable tower crane |
| CN102431910B (en) * | 2011-12-12 | 2013-07-24 | 廊坊凯博建设机械科技有限公司 | Arm rack overhead automatic folding and unfolding mechanism of tri-fold arm tower crane and folding and unfolding method thereof |
| CN103410370B (en) * | 2013-08-13 | 2015-07-01 | 中国建筑科学研究院建筑机械化研究分院 | Tower body erecting and descending mechanism for tower crane and erecting and descending method thereof |
| CN111943063B (en) * | 2020-08-19 | 2022-08-12 | 东台市杰顺机械制造有限公司 | Flexible fastening lifting device for flywheel housing processing production |
| CN112551388A (en) * | 2020-12-22 | 2021-03-26 | 通州建总起重设备安装有限公司 | Portable small crane |
-
1990
- 1990-02-14 CN CN 90100710 patent/CN1019565B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1054051A (en) | 1991-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2256078B1 (en) | Folding jib strut | |
| JP5572125B2 (en) | On-board crane | |
| RU2258664C2 (en) | Tower crane slewing part and method of its mounting | |
| RU2532204C2 (en) | Lifting crane guys expander and method of its adjustment | |
| RU2145934C1 (en) | Method of and device for mounting tower crane boom | |
| JP2593349B2 (en) | Crane device and method of using the same | |
| CN1019565B (en) | Foldable crane with jib of two or three hinged parts | |
| JP4402923B2 (en) | Tower crane | |
| CN1028744C (en) | Grue a tour repliable automatiquement | |
| JPH02117591A (en) | Foldable crane having boom comprising two or three elements connected mutually | |
| WO2022075012A1 (en) | Crane | |
| CN112368230A (en) | Large crane with suspension arm | |
| CN1021427C (en) | Folding crane with three section jibs articulated each other | |
| RU2744873C1 (en) | Construction of double-level subframe of raisable work platform | |
| JP2017137171A (en) | Crane and method for mounting boom of crane | |
| CN110921532A (en) | Lifting structure and crane | |
| WO2024018911A1 (en) | Crane and method for assembling and disassembling crane | |
| JPH0328066Y2 (en) | ||
| JP3949766B2 (en) | Roughing jib support device for boom crane with luffing jib | |
| CN219570119U (en) | Arch frame pickup device, auxiliary arm and arch frame trolley | |
| CN210888950U (en) | Tunnel construction trolley | |
| JP3446090B2 (en) | Simple crane for truck | |
| JP3917236B2 (en) | Roughing jib crane | |
| JP7234811B2 (en) | A crane strut, a method for folding a crane strut, and a method for assembling a crane strut | |
| CN112456349A (en) | Crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |