CN201932852U - Hoist - Google Patents
Hoist Download PDFInfo
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- CN201932852U CN201932852U CN201120066209XU CN201120066209U CN201932852U CN 201932852 U CN201932852 U CN 201932852U CN 201120066209X U CN201120066209X U CN 201120066209XU CN 201120066209 U CN201120066209 U CN 201120066209U CN 201932852 U CN201932852 U CN 201932852U
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- hoisting crane
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- squat system
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Abstract
The utility model provides a hoist, which comprises a main arm (1), an auxiliary arm (2), a front strut (3), a rear strut (4), a primary backward tilting prevention device (5), a secondary backward tilting prevention device (6) and a tertiary backward tilting prevention device (7). The main arm (1) is pivotally connected with the auxiliary arm (2), and the front strut (3) and the rear strut (4) are disposed between the main arm (1) and the auxiliary arm (2) and respectively pivotally connected with the main arm (1) or the auxiliary arm (2), the primary backward tilting prevention device (5) is positioned between the main arm (1) and the rear strut (4), the secondary backward tilting prevention device (6) is positioned between the main arm (1) and the front strut (3), and the tertiary backward tilting prevention device is positioned between the main arm (1) and the auxiliary arm (2). The hoist can realize graded backward tilting prevention so as to realize better backward tilting prevention capacity, and safety and reliability of the hoist during luffing operation of the auxiliary arm are improved.
Description
Technical field
The utility model relates to a kind of hoisting crane.
Background technology
Crawler crane luffing auxiliary system is excessive at the elevation angle, and center-of-gravity position when connecting the hinge rear accident that the luffing auxiliary is tumbled backward takes place easily.Therefore, the anti-hypsokinesis technology of jib is the safety assurance of crawler crane work.Along with the crawler crane market competition is fierce day by day, the safety and reliability during to the operation of luffing auxiliary and anti-after the ability of tumbling higher requirement has been arranged.Existing anti-squat system adopts single-stage to arrange usually, in case the anti-squat system that this single-stage is arranged breaks down, the accident that the luffing auxiliary is tumbled backward just takes place easily, and safety and reliability are lower.
The utility model content
The purpose of this utility model provides a kind of ability hoisting crane preferably of tumbling after anti-.
To achieve these goals, the utility model provides a kind of hoisting crane, this hoisting crane comprises principal arm, auxiliary, front strut and rear pole, described principal arm and described auxiliary pivotal joint, described front strut and rear pole be arranged between described principal arm and the described auxiliary and respectively with described principal arm or described auxiliary pivotal joint, wherein, this hoisting crane comprises first order anti-squat system, second stage anti-squat system and third stage anti-squat system, described first order anti-squat system is between described principal arm and described rear pole, described second stage anti-squat system is between described principal arm and described front strut, and described third stage anti-squat system is between described principal arm and described auxiliary.
Preferably, described first order anti-squat system is a rigid construction.
Preferably, the adjustable in length of described first order anti-squat system.
Preferably, pipe and outer tube in described first order anti-squat system comprises, pipe is provided with first through hole in described, described outer tube is provided with a plurality of second through holes of arranging along the longitudinal axis of described outer tube, pipe box is contained in the described outer tube in described, and described interior pipe can be captiveed joint with the bearing pin of described second through hole by passing described first through hole with outer tube.
Preferably, also be provided with a plurality of third through-holes on the described outer tube, the axis normal of the axis of described third through-hole and described second through hole, and described second through hole and third through-hole are spaced apart along the longitudinal axis of described outer tube.
Preferably, the inner of pipe is provided with and is suitable for the stop part that cooperates with described bearing pin in described, when described first order anti-squat system is in running order, in described captive joint with described principal arm in the outer end of pipe, captive joint with described rear pole in the outer end of described outer tube, described bearing pin passes second through hole on the described outer tube or third through-hole and engages with described stop part.
Preferably, described stop part is the plug shape, one end of this plug shape stop part inserts in the described interior pipe and by position-limited lever captives joint with described interior pipe, the end face of the other end of this plug shape stop part has and is suitable for the semi-cylindrical recesses that cooperates with described bearing pin, and described bearing pin can engage with described semi-cylindrical recesses.
Preferably, described semi-cylindrical recesses is two, and the longitudinal axis of these two semi-cylindrical recesses is vertical mutually.
Preferably, described second stage anti-squat system is a buffer structure.
Preferably, described second stage anti-squat system is hydraulic actuating cylinder, cylinder or oil gas cylinder.
Preferably, described oil gas cylinder comprises the piston rod in cylinder barrel and the described cylinder barrel of insertion, the inside of described cylinder barrel is provided with first cavity and described cylinder barrel is provided with oil-filled mouthful that communicates with described first cavity, the inside of described piston rod is provided with second cavity and described piston rod is provided with the inflation inlet that communicates with described second cavity, be provided with piston in described second cavity, this piston separates described first cavity and described second cavity, described cylinder barrel is captiveed joint with described front strut, and described piston rod is captiveed joint with described principal arm.
Preferably, described cylinder barrel is provided with the pressure tap that communicates with described first cavity.
Preferably, described third stage anti-squat system comprises stop gear, detecting unit and control unit, the maximum that described stop gear is used to limit described auxiliary is change angle backward, described detecting unit is used to detect the control position of described auxiliary and sends signal to described control unit, and the signal that described control unit is used to receive described detecting unit makes described auxiliary stop luffing backward during change angle to reach maximum at described auxiliary backward.
Preferably, described stop gear comprises position-limited rack and push rod, wherein:
Described position-limited rack is a dihedral, this dihedral position-limited rack comprises the crossing the first arm and second arm, the end of described the first arm is provided with weight, and the arranged outside of the junction of the described the first arm and second arm has first position-limited trough, the end of described second arm and described auxiliary pivotal joint;
One end of described push rod and described principal arm pivotal joint, the other end of described push rod are suitable for when the described first position-limited trough complete opening and the engagement of described first position-limited trough.
Preferably, the outside of the junction of the described the first arm and second arm also is provided with second position-limited trough, when the described first position-limited trough complete opening, and the engagement of the web member of described second position-limited trough and described auxiliary.
Preferably, described stop gear also comprises support, an end of this support and described principal arm pivotal joint, and described principal arm is provided with limiting stopper, this limiting stopper is used to limit position, an end of described push rod and the described support pivotal joint that the other end of described support moves down.
Preferably, described detecting unit comprises first limit switch, this first limit switch is installed on the described auxiliary, be used for the position of described first position-limited trough is detected, and when the described first position-limited trough complete opening, send the signal of the described first position-limited trough complete opening to described control unit; Described control unit is used to receive the signal of described first limit switch, and controls the action of described auxiliary when receiving the signal of the described first position-limited trough complete opening, makes described auxiliary stop luffing backward.
Preferably, described detecting unit also comprises second limit switch, this second limit switch is installed on the described auxiliary, be used for the position of described first position-limited trough is detected, and the signal that described first position-limited trough is closed fully sends described control unit to when described first position-limited trough is closed fully; Described control unit also is used to receive the signal of described second limit switch, thereby the mode of operation and the confined state of described position-limited rack and push rod are monitored.
Since the hoisting crane that provides of the utility model comprise be arranged between described principal arm and the rear pole, between described principal arm and the front strut and the first order anti-squat system between described principal arm and the auxiliary, second stage anti-squat system and third stage anti-squat system, so can realize classification tumbles after anti-, thereby obtain the ability of tumbling after anti-preferably, and then the safety and reliability when having improved the operation of luffing auxiliary.
Other feature and advantage of the present utility model will partly be described in detail in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and constitutes the part of specification sheets, is used from explanation the utility model with the following specific embodiment one, but does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the hoisting crane that provides of the utility model;
Fig. 2 is the structural representation that the first order anti-squat system of the hoisting crane that provides of the utility model is in travelling position;
Fig. 3 is the in running order structural representation of first order anti-squat system of the hoisting crane that provides of the utility model;
Fig. 4 is the structural representation of the second stage anti-squat system of the hoisting crane that provides of the utility model;
Fig. 5 is the structure for amplifying scheme drawing of A part among Fig. 1;
Fig. 6 is the structure for amplifying scheme drawing of B part among Fig. 5;
Fig. 7 is the structural representation of position-limited rack of the third stage anti-squat system of the hoisting crane that provides of the utility model.
Description of reference numerals
1: principal arm; 2: auxiliary; 3: front strut; 4: rear pole; 5: first order anti-squat system; 6: second stage anti-squat system; 7: third stage anti-squat system; 8: interior pipe; 9: outer tube; 10: through hole; 11: bearing pin; 12: stop part; 13: position-limited lever; 14: semi-cylindrical recesses; 15: cylinder barrel; 16: piston rod; 17: the first cavitys; 18: the second cavitys; 19: oil-filled mouthful; 20: inflation inlet; 21: position-limited rack; 22: push rod; 23: pressure tap; 24: the first arm; 25: the second arms; 26: the first position-limited troughs; 27: support; 28: limiting stopper; 29: the first limit switches; 30: the second limit switches; 31: piston; 32: weight; 33: the second position-limited troughs; 34: web member; 35: lubricating cup.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.Should be understood that the specific embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
In the utility model, do not doing under the situation of opposite explanation, the noun of locality that uses is undefined at the mode of operation of hoisting crane as " preceding ", " back ", D score, the implication of term " rigid construction " is for providing the structure of rigid support for rear pole, and the implication of term " buffer structure " is for providing the structure of buffering for front strut.
As shown in Figure 1, the utility model provides a kind of hoisting crane, this hoisting crane comprises principal arm 1, auxiliary 2, front strut 3 and rear pole 4, described principal arm 1 and described auxiliary 2 pivotal joints, described front strut 3 and rear pole 4 be arranged between described principal arm 1 and the described auxiliary 2 and respectively with described principal arm 1 or described auxiliary 2 pivotal joints, wherein, this hoisting crane comprises first order anti-squat system 5, second stage anti-squat system 6 and third stage anti-squat system 7, described first order anti-squat system 5 is between described principal arm 1 and described rear pole 4, described second stage anti-squat system 6 is between described principal arm 1 and described front strut 3, and described third stage anti-squat system 7 is between described principal arm 1 and described auxiliary 2.
Since the hoisting crane that provides of the utility model comprise be arranged between described principal arm 1 and the rear pole 4, between described principal arm 1 and the front strut 3 and first order anti-squat system 5, second stage anti-squat system 6 and third stage anti-squat system 7 between described principal arm 1 and the auxiliary 2, so can realize classification tumbles after anti-, thereby obtain the ability of tumbling after anti-preferably, and then the safety and reliability when having improved the operation of luffing auxiliary.
Concrete structure to first order anti-squat system 5, second stage anti-squat system 6 and third stage anti-squat system 7 is elaborated below.
First order anti-squat system 5:
Described first order anti-squat system 5 can adopt the various appropriate configuration that can realize anti-hypsokinesis function, and preferably, described first order anti-squat system 5 is a rigid construction.Like this, can provide rigid support for luffing auxiliary system by first order anti-squat system 5, thereby realize spacing function.Described first order anti-squat system 5 can adopt various rigid constructiones, and for example the pipe of the bar of rigidity, rigidity or other have the structure of rigidity.
More preferably, the adjustable in length of described first order anti-squat system 5.Like this, when first order anti-squat system 5 is not worked, the length of first order anti-squat system 5 can be transferred weak point, thus convenient transportation; When 5 work of first anti-squat system, the length of first order anti-squat system 5 can be transferred length, thereby realize limit function.In addition, can regulate, to adapt to the different operating state of hoisting crane the anti-dumping length of first order anti-squat system 5.Fig. 2 has shown that the first order anti-squat system 5 of the hoisting crane that the utility model provides is in the structural representation of travelling position; Fig. 3 has shown the structural representation that the first order anti-squat system 5 of the hoisting crane that the utility model provides is in running order.As shown in Figure 2, when needs transport, first order anti-squat system 5 can be transferred weak point, and can be connected with hoisting crane by a end, thereby can transport easily first order anti-squat system 5.As shown in Figure 3, when the needs anti-dumping, first order anti-squat system 5 can be transferred length, to carry out anti-dumping.
As shown in Figure 2, according to a kind of preferred implementation of the present utility model, pipe 8 and outer tube 9 in described first order anti-squat system 5 comprises, pipe 8 is provided with the first through hole (not shown) in described, described outer tube 9 is provided with a plurality of second through holes 10 of arranging along the longitudinal axis of described outer tube 9, pipe 8 is sleeved in the described outer tube 9 in described, described in pipe 8 can captive joint by the bearing pin 11 that passes described first through hole and described second through hole 10 with outer tube 9.Like this, by regulating the position of outer tube 9 with respect to interior pipe 8, and interior pipe 8 is captiveed joint with outer tube 9 by bearing pin 11, can regulate the total length of first order anti-squat system 5 easily, and then can conveniently transport, and can adjust the anti-dumping length of first order anti-squat system 5 easily.In addition, said structure is very simple, and convenient the layout.Described first through hole can be one, also can be for a plurality of.When first through hole when being a plurality of,, also one second through hole 10 can only be set on outer tube 9 as selection.The position of described first through hole and second through hole 10 and quantity are determined according to concrete needs, as long as can conveniently use.
Preferably, also be provided with a plurality of third through-hole (not shown)s on the described outer tube 9, the axis normal of the axis of described third through-hole and described second through hole 10, and described second through hole 10 and third through-hole are spaced apart along the longitudinal axis of described outer tube 9.Like this, can make bearing pin 11 pass first through hole and with third through-hole interior pipe 8 be captiveed joint with outer tube 9, thereby can make things convenient for and accurately adjust the anti-dumping length of first order anti-squat system 5 with second through hole 10 or first through hole.The particular location of second through hole 10 and third through-hole and quantity are determined according to concrete needs.
According to a kind of preferred implementation of the present utility model, pipe the inner of 8 is provided with and is suitable for the stop part 12 that cooperates with described bearing pin 11 in described, when described first order anti-squat system 5 is in running order, in described captive joint with described principal arm 1 in the outer end of pipe 8, captive joint with described rear pole 4 in the outer end of described outer tube 9, described bearing pin 11 passes second through hole 10 on the described outer tube 9 or third through-hole and engages with described stop part 12.Owing to captive joint with rear pole 4 with principal arm 1 respectively in the two ends of first order anti-squat system 5, so first order anti-squat system 5 can only extend a little,, interior pipe 8 is not connected thereby being broken away from outer tube 9, can make things convenient for the installation of first order anti-squat system 5 like this.In addition because bearing pin 11 engages with stop part 12, so first order anti-squat system 5 can not shorten, thereby can provide rigid support to luffing auxiliary system effectively.In the above-described embodiment, captive joint with principal arm 1 in the outer end of interior pipe 8, captives joint with rear pole 4 in the outer end of outer tube 9.As selection, in also can making captive joint with rear pole 4 in the outer end of pipe 8, and captiveed joint with principal arm 1 in the outer end of outer tube 9.Can adopt various suitable parts to be captiveed joint with rear pole 4 with principal arm 1 in the two ends of first order anti-squat system 5, for example pin, bolt or screw.
Described stop part 12 can adopt various appropriate configuration, the installation of stop part 12 for convenience, and it is spacing to make things convenient for 12 pairs of bearing pins of stop part 11 to carry out, as shown in Figure 2, preferably, described stop part 12 is the plug shape, this end of filling in shape stop part 12 inserts in the described interior pipe 8 and by position-limited lever 13 captives joint with described interior pipe 8, the end face of the other end of this plug shape stop part 12 has and is suitable for the semi-cylindrical recesses 14 that cooperates with described bearing pin 11, and described bearing pin 11 can engage with described semi-cylindrical recesses 14.As shown in Figure 2, described position-limited lever 13 passes plug shape stop part 12 and captives joint with interior pipe 8, captives joint with interior pipe 8 thereby will fill in shape stop part 12.Particularly, the relative both sides of interior pipe 8 are provided with porose, and the two ends of position-limited lever 13 are separately fixed in the described hole.For corresponding with second through hole 10 and third through-hole, thereby adjust the anti-dumping length of first order anti-squat system 5 easily, preferably, described semi-cylindrical recesses 14 is two, and the longitudinal axis of these two semi-cylindrical recesses 14 is vertical mutually.
In addition, also be provided with lubricating cup 35 on the described outer tube 9, thereby can in outer tube 9, inject lubricating oil easily, outer tube 9 and interior pipe 8 are lubricated, reduce the friction force between outer tube 9 and the interior pipe 8 by lubricating cup 35.
Second stage anti-squat system 6:
Described second stage anti-squat system 6 can adopt the various appropriate configuration that can realize anti-hypsokinesis function, in order to provide buffering to luffing auxiliary system, absorbs impact load effectively, and preferably, described second stage anti-squat system 6 is a buffer structure.For simplified structure and convenient layout, preferably, described second stage anti-squat system 6 is hydraulic actuating cylinder, cylinder or oil gas cylinder.
As shown in Figure 4, in order to improve buffering effect, preferably, described oil gas cylinder comprises the piston rod 16 in cylinder barrel 15 and the described cylinder barrel 15 of insertion, the inside of described cylinder barrel 15 is provided with first cavity 17 and described cylinder barrel 15 is provided with oil-filled mouthful 19 that communicates with described first cavity 17, the inside of described piston rod 16 is provided with second cavity 18 and described piston rod 16 is provided with the inflation inlet 20 that communicates with described second cavity 18, be provided with piston 31 in described second cavity 18, this piston 31 separates described first cavity 17 and described second cavity 18, described cylinder barrel 15 is captiveed joint with described front strut 3, and described piston rod 16 is captiveed joint with described principal arm 1.Described cylinder barrel 15 can be captiveed joint with described front strut 3 by various suitable parts, for example pin, bolt or screw.Described piston rod 16 can be captiveed joint with described principal arm 1 by various suitable parts, for example pin, bolt or screw.
In order to charge into hydraulic oil easily in first cavity 17, preferably, described oil-filled mouthful 19 is provided with unidirectional prefill valve (not shown).In order to charge into gas easily in second cavity 18, preferably, described inflation inlet 20 is provided with unidirectional charge valve (not shown).In use, can in first cavity 17, charge into hydraulic oil by unidirectional prefill valve, and in second cavity 18, charge into nitrogen by unidirectional charge valve.Can control the extension elongation of piston rod 16 in the cylinder barrel 15 by the pressure of regulating hydraulic oil or gas, thereby adjust the anti-dumping length of second stage anti-squat system 6.In the anti-dumping process, when auxiliary 2 rotates to a precipitous position, cylinder barrel 15 under external force can be to piston rod 16 1 side shiftings, hydraulic oil in first cavity 17 will promote piston 31 and move to second cavity 18, along with the volume of second cavity 18 reduces, nitrogen is constantly compressed, and makes that the pressure in second cavity 18 constantly increases, thereby the generation elastic buffer plays the anti-dumping effect.Generally, the volume of second cavity 18 is in full reduced state thereby work as cylinder barrel 15, when promptly hydraulic oil all enters in second cavity 18 greater than the volume of first cavity 17, can be owing to nitrogen compression does not cause in second cavity 18 pressure excessive, thus the 18 inwall explosions of second cavity can be prevented.
For the pressure to the hydraulic oil in the cylinder barrel 15 easily detects and controls, preferably, described cylinder barrel 15 is provided with the pressure tap 23 that communicates with described first cavity 17.Can be in pressure tap 23 setting pressure sensor (not shown), thereby the pressure of the hydraulic oil in the cylinder barrel 15 is detected.In addition, the travel switch (not shown) can also be installed, thereby when cylinder barrel 15 moved to desired location, travel switch was spacing on piston rod 16.
Third stage anti-squat system 7:
Described third stage anti-squat system 7 can adopt the various appropriate configuration that can realize anti-hypsokinesis function, according to a kind of preferred implementation of the present utility model, described third stage anti-squat system 7 comprises stop gear, detecting unit and control unit, the maximum that described stop gear is used to limit described auxiliary 2 is change angle backward, described detecting unit is used to detect the control position of described auxiliary 2 and sends signal to described control unit, and the signal that described control unit is used to receive described detecting unit makes described auxiliary 2 stop luffing backward during change angle to reach maximum at described auxiliary 2 backward.Like this, combination by stop gear, detecting unit and control unit three, promptly can carry out spacing to auxiliary 2 by stop gear, prevent that auxiliary 2 from tumbling backward, again can be when the stop gear anti-dumping puts in place by detecting unit and control unit, control auxiliary 2 stops luffing backward, thereby prevents stop gear to be damaged and have an accident, and double shield is provided.
Described stop gear can adopt various suitable structures, extremely shown in Figure 7 as Fig. 5, according to a kind of preferred implementation of the present utility model, described stop gear comprises position-limited rack 21 and push rod 22, wherein: described position-limited rack 21 is a dihedral, this dihedral position-limited rack 21 comprises the crossing the first arm 24 and second arm 25, the end of described the first arm 24 is provided with weight 32, the arranged outside of the junction of the described the first arm 24 and second arm 25 has first position-limited trough 26, the end of described second arm 25 and described auxiliary 2 pivotal joints; One end of described push rod 22 and described principal arm 1 pivotal joint, the other end of described push rod 22 are suitable for when described first position-limited trough, 26 complete openings and 26 engagements of described first position-limited trough.
Described first position-limited trough 26 can be various suitable shapes, and for convenience spacing, preferably, described first position-limited trough 26 is an arc.When first position-limited trough, 26 complete openings, in order to fix the position of first position-limited trough 26, preferably, the outside of the junction of the described the first arm 24 and second arm 25 also is provided with second position-limited trough 33, when described first position-limited trough, 26 complete openings, web member 34 engagements of described second position-limited trough 33 and described auxiliary 2 as shown in Figure 6, thereby prevent that position-limited rack 21 from putting further cw around its pivotal joint with auxiliary 2 and swinging.Described second position-limited trough 33 can be various suitable shapes, and for convenience spacing, preferably, described second position-limited trough 33 is an arc.In addition, the junction rounding off of described first position-limited trough 26 and second position-limited trough 33.
After the hoisting crane assembling finished, position-limited rack 21 was hidden in the auxiliary 2, and first position-limited trough 26 is in closure state, and push rod 22 rides on the auxiliary 2.In the working process of hoisting crane, when auxiliary 2 counter-clockwise swings, because the effect of weight 32, position-limited rack 21 will be around the pivotal joint spot wobble of itself and auxiliary 2, when auxiliary 2 continues to swing to web member 34 engagements of second position-limited trough 33 and auxiliary 2, first position-limited trough, 26 complete openings, the other end of push rod 22 and 26 engagements of described first position-limited trough, push rod 22 has just played position-limiting action like this, can stop auxiliary 2 further to be tumbled backward.
For additional strengthening, strengthen the anti-dumping effect, preferably, described stop gear also comprises support 27, one end of this support 27 and described principal arm 1 pivotal joint, described principal arm 1 is provided with limiting stopper 28, and this limiting stopper 28 is used to limit position, an end of described push rod 22 and described support 27 pivotal joints that the other end of described support 27 moves down.As shown in Figure 5, when end of push rod 22 and 26 engagements of first position-limited trough, because limiting stopper 28 can play position-limiting action to the other end of support 27, and then plays a supporting role to push rod 22, so can further strengthen the anti-dumping effect.One end of push rod 22 and the pivotal joint position of support 27 are determined as the case may be, the other end and support 27 pivotal joints of the usually close support 27 of an end of push rod 22.As shown in Figure 5, position-limited rack 21 is arranged on the coxopodite of auxiliary 2 usually, and support 27 is arranged on the arm head of principal arm 1, and push rod 22 is between position-limited rack 21 and support 27.
According to a kind of preferred implementation of the present utility model, described detecting unit comprises first limit switch 29, this first limit switch 29 is installed on the described auxiliary 2, be used for the position of described first position-limited trough 26 is detected, and when described first position-limited trough, 26 complete openings, send the signal of described first position-limited trough, 26 complete openings to described control unit; Described control unit is used to receive the signal of described first limit switch 29, and controls the action of described auxiliary 2 when receiving the signal of described first position-limited trough, 26 complete openings, makes described auxiliary 2 stop luffing backward.In the working process of hoisting crane, when first position-limited trough, 26 complete openings, push rod 22 and 26 engagements of first position-limited trough, played position-limiting action, control the action of described auxiliary 2 simultaneously by control unit, make described auxiliary 2 stop luffing backward, thus can prevent further that stop gear is damaged, thus further prevent auxiliary 2 from tumbling backward and have an accident.The installation site of described first limit switch 29 is determined as the case may be, as long as can realize its function.
Preferably, described detecting unit also comprises second limit switch 30, this second limit switch 30 is installed on the described auxiliary 2, be used for the position of described first position-limited trough 26 is detected, and when described first position-limited trough 26 is closed fully, send the closed fully signal of described first position-limited trough 26 to described control unit; Described control unit also is used to receive the signal of described second limit switch 30, thereby the mode of operation and the confined state of described position-limited rack 21 and push rod 22 are monitored.Like this, in the fitting process of hoisting crane, when the telltale by control unit showed that first position-limited trough 26 is in closure state, the staff can recognize that just position-limited rack 21 has been in place, thereby can make things convenient for the assembling of hoisting crane; In the working process of hoisting crane, when the telltale by control unit shows that first position-limited trough 26 is in closure state, the staff can recognize that just push rod 22 does not also mesh with first position-limited trough 26, that is to say that push rod 22 does not also enter spacing state, thereby can monitor the hypsokinesis degree of auxiliary 2.The installation site of described second limit switch 30 is determined as the case may be, as long as can realize its function.
The formation of described first limit switch 29, second limit switch 30 and control unit and selecting for use to conventionally known to one of skill in the art does not repeat them here.
The structure of described principal arm 1, auxiliary 2, front strut 3 and rear pole 4 is conventionally known to one of skill in the art, does not repeat them here.
The anti-dumping process of the hoisting crane that the utility model specific embodiment provides is described below in conjunction with Fig. 1 to Fig. 7.
In the working process of hoisting crane, when auxiliary 2 when luffing reaches certain angle backward, first order anti-squat system 5 at first works, and pipe 8 and outer tube 9 provide rigid support for luffing auxiliary system in utilizing, thereby realize spacing function; Then, second stage anti-squat system 6 works, cylinder barrel 15 is under external force to piston rod 16 1 side shiftings, hydraulic oil in first cavity 17 promotes piston 31 and moves to second cavity 18, along with the volume of second cavity 18 reduces, nitrogen is constantly compressed, and makes that the pressure in second cavity 18 constantly increases, thereby the generation elastic buffer plays the anti-dumping effect; At last, when auxiliary 2 continues to swing to web member 34 engagements of second position-limited trough 33 and auxiliary 2 backward, first position-limited trough, 26 complete openings, the other end of push rod 22 and 26 engagements of described first position-limited trough, push rod 22 has just played position-limiting action like this, can stop auxiliary 2 further to be tumbled backward, simultaneously, first limit switch 29 sends the signal of first position-limited trough, 26 complete openings to described control unit, described control unit is controlled the action of described auxiliary 2, make described auxiliary 2 stop luffing backward, thereby prevent stop gear to be damaged and have an accident, double shield is provided.
As seen, the hoisting crane that the utility model provides can be realized tumbling after classification is prevented by first order anti-squat system 5, second stage anti-squat system 6 and third stage anti-squat system 7, thereby obtain the ability of tumbling after anti-preferably, and then the safety and reliability when having improved the operation of luffing auxiliary.
Below describe preferred implementation of the present utility model in conjunction with the accompanying drawings in detail; but; the utility model is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up by any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between the various embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (18)
1. hoisting crane, this hoisting crane comprises principal arm (1), auxiliary (2), front strut (3) and rear pole (4), described principal arm (1) and described auxiliary (2) pivotal joint, described front strut (3) and rear pole (4) be arranged between described principal arm (1) and the described auxiliary (2) and respectively with described principal arm (1) or described auxiliary (2) pivotal joint, it is characterized in that, this hoisting crane comprises first order anti-squat system (5), second stage anti-squat system (6) and third stage anti-squat system (7), described first order anti-squat system (5) is positioned between described principal arm (1) and the described rear pole (4), described second stage anti-squat system (6) is positioned between described principal arm (1) and the described front strut (3), and described third stage anti-squat system (7) is positioned between described principal arm (1) and the described auxiliary (2).
2. hoisting crane according to claim 1 is characterized in that, described first order anti-squat system (5) is a rigid construction.
3. hoisting crane according to claim 2 is characterized in that, the adjustable in length of described first order anti-squat system (5).
4. hoisting crane according to claim 3, it is characterized in that, described first order anti-squat system (5) comprises interior pipe (8) and outer tube (9), pipe (8) is provided with first through hole in described, described outer tube (9) is provided with a plurality of second through holes (10) of arranging along the longitudinal axis of described outer tube (9), pipe (8) is sleeved in the described outer tube (9) in described, and described interior pipe (8) can be captiveed joint by the bearing pin (11) that passes described first through hole and described second through hole (10) with outer tube (9).
5. hoisting crane according to claim 4, it is characterized in that, described outer tube also is provided with a plurality of third through-holes on (9), the axis normal of the axis of described third through-hole and described second through hole (10), and described second through hole (10) and third through-hole are spaced apart along the longitudinal axis of described outer tube (9).
6. hoisting crane according to claim 5, it is characterized in that, the inner of pipe (8) is provided with and is suitable for the stop part (12) that cooperates with described bearing pin (11) in described, when described first order anti-squat system (5) is in running order, in described captive joint with described principal arm (1) in the outer end of pipe (8), captive joint with described rear pole (4) in the outer end of described outer tube (9), described bearing pin (11) passes second through hole (10) on the described outer tube (9) or third through-hole and engages with described stop part (12).
7. hoisting crane according to claim 6, it is characterized in that, described stop part (12) is the plug shape, this end of filling in shape stop part (12) inserts in the described interior pipe (8) and by position-limited lever (13) captives joint with described interior pipe (8), the end face of the other end of this plug shape stop part (12) has and is suitable for the semi-cylindrical recesses (14) that cooperates with described bearing pin (11), and described bearing pin (11) can engage with described semi-cylindrical recesses (14).
8. hoisting crane according to claim 7 is characterized in that, described semi-cylindrical recesses (14) is two, and the longitudinal axis of these two semi-cylindrical recesses (14) is vertical mutually.
9. hoisting crane according to claim 1 is characterized in that, described second stage anti-squat system (6) is a buffer structure.
10. hoisting crane according to claim 9 is characterized in that, described second stage anti-squat system (6) is hydraulic actuating cylinder, cylinder or oil gas cylinder.
11. hoisting crane according to claim 10, it is characterized in that, described oil gas cylinder comprises the piston rod (16) in cylinder barrel (15) and the described cylinder barrel of insertion (15), the inside of described cylinder barrel (15) is provided with first cavity (17) and described cylinder barrel (15) is provided with oil-filled mouthful (19) that communicate with described first cavity (17), the inside of described piston rod (16) is provided with second cavity (18) and described piston rod (16) is provided with the inflation inlet (20) that communicates with described second cavity (18), be provided with piston (31) in described second cavity (18), this piston (31) separates described first cavity (17) and described second cavity (18), described cylinder barrel (15) is captiveed joint with described front strut (3), and described piston rod (16) is captiveed joint with described principal arm (1).
12. hoisting crane according to claim 11 is characterized in that, described cylinder barrel (15) is provided with the pressure tap (23) that communicates with described first cavity (17).
13. hoisting crane according to claim 1, it is characterized in that, described third stage anti-squat system (7) comprises stop gear, detecting unit and control unit, the maximum that described stop gear is used to limit described auxiliary (2) is change angle backward, described detecting unit is used to detect the control position of described auxiliary (2) and sends signal to described control unit, and the signal that described control unit is used to receive described detecting unit makes described auxiliary (2) stop luffing backward during change angle to reach maximum at described auxiliary (2) backward.
14. hoisting crane according to claim 13 is characterized in that, described stop gear comprises position-limited rack (21) and push rod (22), wherein:
Described position-limited rack (21) is a dihedral, this dihedral position-limited rack (21) comprises crossing the first arm (24) and second arm (25), the end of described the first arm (24) is provided with weight (32), the arranged outside of the junction of described the first arm (24) and second arm (25) has first position-limited trough (26), the end of described second arm (25) and described auxiliary (2) pivotal joint;
One end of described push rod (22) and described principal arm (1) pivotal joint, the other end of described push rod (22) are suitable for when described first position-limited trough (26) complete opening and described first position-limited trough (26) engagement.
15. hoisting crane according to claim 14, it is characterized in that, the outside of the junction of described the first arm (24) and second arm (25) also is provided with second position-limited trough (33), when described first position-limited trough (26) complete opening, described second position-limited trough (33) meshes with the web member (34) of described auxiliary (2).
16. hoisting crane according to claim 14, it is characterized in that, described stop gear also comprises support (27), one end of this support (27) and described principal arm (1) pivotal joint, described principal arm (1) is provided with limiting stopper (28), this limiting stopper (28) is used to limit position, an end of described push rod (22) and described support (27) pivotal joint that the other end of described support (27) moves down.
17. hoisting crane according to claim 14, it is characterized in that, described detecting unit comprises first limit switch (29), this first limit switch (29) is installed on the described auxiliary (2), be used for the position of described first position-limited trough (26) is detected, and when described first position-limited trough (26) complete opening, send the signal of described first position-limited trough (26) complete opening to described control unit; Described control unit is used to receive the signal of described first limit switch (29), and controls the action of described auxiliary (2) when receiving the signal of described first position-limited trough (26) complete opening, makes described auxiliary (2) stop luffing backward.
18. hoisting crane according to claim 17, it is characterized in that, described detecting unit also comprises second limit switch (30), this second limit switch (30) is installed on the described auxiliary (2), be used for the position of described first position-limited trough (26) is detected, and the signal that described first position-limited trough (26) is closed fully sends described control unit to when described first position-limited trough (26) is closed fully; Described control unit also is used to receive the signal of described second limit switch (30), thereby the mode of operation and the confined state of described position-limited rack (21) and push rod (22) are monitored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120066209XU CN201932852U (en) | 2011-03-14 | 2011-03-14 | Hoist |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120066209XU CN201932852U (en) | 2011-03-14 | 2011-03-14 | Hoist |
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| Publication Number | Publication Date |
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| CN201932852U true CN201932852U (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120066209XU Expired - Lifetime CN201932852U (en) | 2011-03-14 | 2011-03-14 | Hoist |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102431920A (en) * | 2011-12-21 | 2012-05-02 | 上海三一科技有限公司 | Anti-backward tilting device for flexible arm support and crane comprising same |
| CN102502430A (en) * | 2011-11-22 | 2012-06-20 | 中联重科股份有限公司 | Crane and lifting beam thereof |
| CN103043547A (en) * | 2012-12-26 | 2013-04-17 | 三一重工股份有限公司 | Back-tilting prevention mechanism and crane |
| WO2013078813A1 (en) * | 2011-11-30 | 2013-06-06 | 湖南三一智能控制设备有限公司 | Anti-backward-tipping moment limiter for a boom |
| CN103641004A (en) * | 2013-11-25 | 2014-03-19 | 无锡起岸重工机械有限公司 | Trussed marine platform crane variable-amplitude limiting mechanism |
| CN105060142A (en) * | 2015-08-06 | 2015-11-18 | 徐工集团工程机械股份有限公司 | Integrally mounted and transported luffing fly jib of crawler crane |
| CN105692472A (en) * | 2014-12-12 | 2016-06-22 | 马尼托瓦克起重机有限责任公司 | Gravity actuated crane stop |
| CN108516475A (en) * | 2018-05-22 | 2018-09-11 | 徐州维尔力德重工科技有限公司 | A kind of crane subsidiary arm for being exclusively used in shield machine and turning over operation |
| CN113979336A (en) * | 2021-10-29 | 2022-01-28 | 徐州重型机械有限公司 | Auxiliary arm structure of crane and crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102502430A (en) * | 2011-11-22 | 2012-06-20 | 中联重科股份有限公司 | Crane and lifting beam thereof |
| CN102502430B (en) * | 2011-11-22 | 2014-01-01 | 中联重科股份有限公司 | Crane and lifting beam thereof |
| WO2013078813A1 (en) * | 2011-11-30 | 2013-06-06 | 湖南三一智能控制设备有限公司 | Anti-backward-tipping moment limiter for a boom |
| CN102431920A (en) * | 2011-12-21 | 2012-05-02 | 上海三一科技有限公司 | Anti-backward tilting device for flexible arm support and crane comprising same |
| CN103043547A (en) * | 2012-12-26 | 2013-04-17 | 三一重工股份有限公司 | Back-tilting prevention mechanism and crane |
| CN103641004A (en) * | 2013-11-25 | 2014-03-19 | 无锡起岸重工机械有限公司 | Trussed marine platform crane variable-amplitude limiting mechanism |
| CN105692472A (en) * | 2014-12-12 | 2016-06-22 | 马尼托瓦克起重机有限责任公司 | Gravity actuated crane stop |
| US10173869B2 (en) | 2014-12-12 | 2019-01-08 | Manitowoc Crane Companies, Llc | Gravity actuated crane stop |
| CN105060142A (en) * | 2015-08-06 | 2015-11-18 | 徐工集团工程机械股份有限公司 | Integrally mounted and transported luffing fly jib of crawler crane |
| CN108516475A (en) * | 2018-05-22 | 2018-09-11 | 徐州维尔力德重工科技有限公司 | A kind of crane subsidiary arm for being exclusively used in shield machine and turning over operation |
| CN113979336A (en) * | 2021-10-29 | 2022-01-28 | 徐州重型机械有限公司 | Auxiliary arm structure of crane and crane |
| CN113979336B (en) * | 2021-10-29 | 2024-04-09 | 徐州重型机械有限公司 | Auxiliary arm structure of crane and crane |
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Address after: 410013 No. 361 South silver basin, Hunan, Changsha Patentee after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410013 No. 361 South silver basin, Hunan, Changsha Patentee before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
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Granted publication date: 20110817 |
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