CN103232002A - Boom anti-tilting mechanism, crane boom comprising boom anti-tilting mechanism and engineering crane - Google Patents
Boom anti-tilting mechanism, crane boom comprising boom anti-tilting mechanism and engineering crane Download PDFInfo
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- CN103232002A CN103232002A CN2013101668504A CN201310166850A CN103232002A CN 103232002 A CN103232002 A CN 103232002A CN 2013101668504 A CN2013101668504 A CN 2013101668504A CN 201310166850 A CN201310166850 A CN 201310166850A CN 103232002 A CN103232002 A CN 103232002A
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Abstract
The invention provides an anti-tilt mechanism for a boom, a crane boom comprising the anti-tilt mechanism and an engineering crane comprising the anti-tilt mechanism. This cantilever crane anti-tilt mechanism includes: the first connecting part (10) is arranged at the first end of the arm body part (30) of the arm support; the second connecting part (20) is arranged at the first end of the arm tip part (40) of the arm support, which is connected with the arm body part (30); a locking member (50) movably disposed between the first connecting portion (10) and the second connecting portion (20); the locker (50) has a first position preventing the first connecting part (10) and the second connecting part (20) from relatively moving in a first direction perpendicular to a moving direction of the locker (50) and a second position allowing the first connecting part (10) and the second connecting part (20) to relatively move in the first direction. According to the boom anti-tilting mechanism provided by the invention, the boom can be effectively prevented from tilting.
Description
Technical field
The present invention relates to the elevator machinery field, in particular to a kind of jib anti-dumping mechanism and comprise its elevator boom rack, crane.
Background technology
In the crane field, existing hoisting crane generally comprises arm body portion and arm tip, be connected rotationally by superposed bearing pin between arm body portion and the arm tip, rise in the arm process carrying out the arm body, arm body portion begins to raise up, rotate around bearing pin under the effect of gravity the arm tip, and the bottom is drawn close to arm body portion.When the arm body portion certain angle that raises up, the arm tip engages fully with connecting bridge between the arm body portion, the arm tip can be under the drive of arm body portion hoisting heavy.Because the gravity effect of weight and the deadweight of arm tip, arm tip only depend on top and being connected of bearing pin between the arm body portion just can finish the lifting action.
But in playing arm or the process of lifting, when arm body portion raises up after the big or arm tip of angle carrying out the lift heavy unloading, can rebound in the arm tip, and then drive jib and tumble, and causes safety misadventure.
Summary of the invention
The present invention aims to provide a kind of jib anti-dumping mechanism and comprises its elevator boom rack, crane, can prevent effectively that jib from tumbling.
To achieve these goals, according to an aspect of the present invention, provide a kind of jib anti-dumping mechanism, having comprised: first connecting portion is arranged on first end of the arm body portion of jib; Second connecting portion is arranged on first end that is connected with arm body portion of the arm tip of jib; Locking piece is arranged between first connecting portion and second connecting portion movably; Locking piece have prevent first connecting portion and second connecting portion along the primary importance of first direction generation relative motion and make first connecting portion and second connecting portion along the second place of first direction generation relative motion, this first direction is perpendicular to the moving direction of locking piece.
Further, first connecting portion has first slideway; Second connecting portion has second slideway, and first slideway and second slideway can arrange with being connected; Locking piece is mounted slidably along first slideway and second slideway, and locking piece has the primary importance at the cohesive position place that is connected first slideway and second slideway, and away from the second place of cohesive position.
Further, first connecting portion is first sleeve that is fixedly connected in the arm body portion, second connecting portion is second sleeve that is fixedly connected on the arm tip, and the opening of first sleeve and second sleeve is oppositely arranged, the slidiing pin of locking piece for being mounted slidably in first sleeve and second sleeve.
Further, slidiing pin is free to slide to second sleeve when jib is positioned at assembled state, is free to slide to the cohesive position of first sleeve and second sleeve when jib has been positioned at the arm state.
Further, be free-running fit between slidiing pin and first sleeve and second sleeve, the two ends of slidiing pin are provided with the guiding frustum.
Further, be set with the locating part of the movement position that limits slidiing pin in first sleeve and/or second sleeve.
Further, jib anti-dumping mechanism also comprises the testing agency of the movement position that detects locking piece.
Further, testing agency comprises the position transduser that is arranged on first connecting portion and/or second connecting portion.
Further, testing agency also comprises the angular transducer that is arranged in the arm body portion.
According to a further aspect in the invention, a kind of elevator boom rack is provided, comprise arm body portion and the arm tip that is connected rotationally by the top bearing pin with arm body portion, also comprise jib anti-dumping mechanism, this jib anti-dumping mechanism is above-mentioned jib anti-dumping mechanism, first connecting portion of jib anti-dumping mechanism is fixedly connected in the arm body portion, and second connecting portion of jib anti-dumping mechanism is fixedly connected on the arm tip.
Further, first connecting portion is fixedly connected on the side away from the top bearing pin of arm body portion, and second connecting portion is fixedly connected on the side away from the top bearing pin of arm tip.
In accordance with a further aspect of the present invention, provide a kind of crane, comprised elevator boom rack, this elevator boom rack is above-mentioned elevator boom rack.
Use technical scheme of the present invention, locking piece is arranged between first connecting portion and second connecting portion movably; Locking piece have prevent first connecting portion and second connecting portion along the primary importance of first direction generation relative motion and make first connecting portion and second connecting portion along the second place of first direction generation relative motion, this first direction is perpendicular to the moving direction of locking piece.In hoisting crane work process, locking piece can be adjusted annexation between first connecting portion and second connecting portion according to the state of hoisting crane, when crane is in installing condition or other off working state, locking piece can be adjusted to the second place, prevent that the relative motion on first direction causes obstruction to locking piece to first connecting portion and second connecting portion, first connecting portion and second connecting portion can be broken away from, be convenient to dismounting between the arm body portion of crane and the arm tip more thereby make, and can not cause obstruction to the mounting or dismounting of arm body portion and arm tip.When crane has been in the arm state, then locking piece can be adjusted to primary importance, first connecting portion and second connecting portion are linked together, this moment, locking piece was positioned in the middle of first connecting portion and second connecting portion, and can prevent between first connecting portion and second connecting portion along first direction generation relative motion, therefore first connecting portion and second connecting portion are locked together, pass through locking piece, the cooperation of first connecting portion and second connecting portion, can make between the arm body portion of jib and the arm tip and have more stable connection structure, therefore can effectively prevent in the jib course of action, the arm tip is owing to reasons such as unloading are suddenly tumbled, the arm body portion that avoids and then may cause tumbles, and has effectively guaranteed the safe operation of crane.
Description of drawings
The accompanying drawing that constitutes a part of the present invention is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Structural representation when Fig. 1 shows elevator boom rack of the prior art and is in assembled state;
Structural representation when Fig. 2 shows elevator boom rack of the prior art and has been in the arm state;
Fig. 3 shows the structural representation when elevator boom rack has been in the arm state according to an embodiment of the invention;
Fig. 4 show jib anti-dumping mechanism according to an embodiment of the invention be in assembled state the time the sectional structure scheme drawing;
Fig. 5 show jib anti-dumping mechanism according to an embodiment of the invention be in horizontality the time the sectional structure scheme drawing; And
Fig. 6 show jib anti-dumping mechanism according to an embodiment of the invention be in the arm state time the sectional structure scheme drawing.
The specific embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 1 and Fig. 2 are respectively the structural representation of elevator boom rack of the prior art when being in assembled state and playing the arm state.As can be seen from Figure 1, when elevator boom rack is in assembled state, connect rotationally by the bearing pin that is arranged on top between first end of the arm body portion 30 of elevator boom rack and first end of arm tip 40, jib supports by the supporting construction of arm body portion 30 and 40 bottoms, arm tip, has big gap between the bottom of arm body portion 30 and arm tip 40.
As can be seen from Figure 2, when elevator boom rack is started working, elevator boom rack has been in the arm state, arm body portion 30 begins to raise up under the effect of lifting lifting rope at this moment, first end that is connected with arm body portion 30 upward movement under the drive of arm body portion 30 of arm tip 40, second end away from arm body portion 30 of arm tip 40 supports on the ground.When arm body portion 30 raised up certain angle, the chord member of the downside of first end of arm tip 40 can contact with the structures such as cross bar of the first end downside of arm body portion 30, and arm tip 40 is being pressed under the gravity effect in the arm body portion 30.In the process of lifting, the application force of weight can act on the arm tip 40, and arm tip 40 is pressed in the arm body portion 30 more closely.
But if unloading suddenly or other unexpected situation take place and cause hanging loading when breaking away from, arm tip 40 can rotate around the top bearing pin under reaction force, if application force is bigger, then may tumble, and then drive whole jib and tumble, serious may cause the accident.
In order to prevent because the problem that the reaction force that is subjected to of arm tip 40 causes arm tip 40 to tumble and bring, the application is provided with connecting portion in arm body portion 30 and arm tip 40, and two connecting portions locks by locking piece 50, thereby be subjected in arm tip 40 unloading suddenly influence the time can not tumble.When not needing two connecting portions are locked, then can change the position of locking piece 50 easily, remove the locking state between two connecting portions, thereby make dismounting between arm tip 40 and the arm body portion 30 and easier for installation quick.
As Fig. 3 and shown in Figure 6, according to embodiments of the invention, jib anti-dumping mechanism comprises first connecting portion 10, second connecting portion 20 and locking piece 50, first connecting portion 10 is arranged on first end of the arm body portion 30 of jib, second connecting portion 20 is arranged on first end of the arm tip 40 of jib, locking piece 50 is arranged between first connecting portion 10 and second connecting portion 20 movably, and locking piece 50 have prevent first connecting portion 10 and second connecting portion 20 along the primary importance of first direction generation relative motion and make first connecting portion 10 and second connecting portion 20 along the second place of first direction generation relative motion, this first direction is perpendicular to the moving direction of locking piece 50.When locking piece 50 moved for long rod structure and along the length direction of long rod structure, this first direction was perpendicular to the length direction of long rod structure.When locking piece 50 was round bar, this first direction was the radial direction of round bar.
By above-mentioned set-up mode, can adjust annexation between first connecting portion 10 and second connecting portion 20 according to the state of crane, when crane is in installing condition or other off working state, locking piece 50 can be adjusted to the second place, prevent that locking piece from causing obstruction to first connecting portion 10 and second relative motion of connecting portion 20 on first direction, first connecting portion 10 and second connecting portion 20 can be broken away from, be convenient to dismounting between the arm body portion 30 of crane and the arm tip 40 more thereby make, and can not cause obstruction to the mounting or dismounting of arm body portion 30 and arm tip 40.When crane has been in the arm state, then locking piece 50 can be adjusted to primary importance, first connecting portion 10 and second connecting portion 20 are linked together, this moment, locking piece 50 was positioned in the middle of first connecting portion 10 and second connecting portion 20, and can prevent between first connecting portion 10 and second connecting portion 20 along first direction generation relative motion, therefore first connecting portion 10 and second connecting portion 20 are locked together, by locking piece 50, the cooperation of first connecting portion 10 and second connecting portion 20, can make between the arm body portion 30 of jib and the arm tip 40 and have more stable connection structure, therefore can effectively prevent in the jib course of action, arm tip 40 is owing to reasons such as unloading are suddenly tumbled, and then cause arm body portion 30 to tumble, effectively guaranteed the safe operation of crane.
In the present embodiment, has first slideway 11 on first connecting portion 10, has second slideway 21 on second connecting portion 20, first slideway 11 and second slideway 21 arrange accordingly, make that when playing the arm state when the bottom of arm body portion 30 and arm tip 40 compressed mutually, first slideway 11 and second slideway 21 were connected, first slideway 11 is consistent with the bearing of trend of second slideway 21, guarantees that locking piece 50 can slide in first slideway 11 and second slideway 21.The cross sectional shape of first slideway 11 and second slideway 21 can be identical, also can be different, but should guarantee that locking piece 50 all slidably and is not hindered in first slideway 11 and second slideway 21.Preferably, the size of first slideway 11 and second slideway 21 is all identical with cross sectional shape.
Locking piece 50 is mounted slidably in first slideway 11 and second slideway 21, and locking piece 50 has the primary importance at the cohesive position place that is connected first slideway 11 and second slideway 21, and away from the second place of this cohesive position.When locking piece 50 is connected the cohesive position of first slideway 11 and second slideway 21, the part of locking piece 50 is positioned at first slideway 11, another part is positioned at second slideway 21, thereby locking piece 50 is stuck between first slideway 11 and second slideway 21, first connecting portion 10 and second connecting portion 20 are linked together, match with the top bearing pin between arm body portion 30 and the arm tip 40, prevent from breaking away from along first direction generation relative motion between first connecting portion 10 and second connecting portion 20, form and prevent the locking position limiting structure that jib is tumbled.When locking piece 50 was positioned at the cohesive position of first slideway 11 and second slideway 21, its length should be able to guarantee to prevent that first connecting portion 10 and second connecting portion 20 break away from.
When locking piece 50 was positioned at the second place, locking piece 50 can be positioned at first slideway 11 on first connecting portion 10 fully, also can be positioned at second slideway 21 on second connecting portion 20 fully, and its particular location can be decided according to the regulative mode of locking piece 50.That is, if locking piece 50 is realized change in location by driver train, then locking piece 50 both can be positioned at first slideway 11, also can be positioned at second slideway 21.When locking piece 50 be according to jib raise up angle difference and carry out the adjustment of position by self gravity, when then locking piece 50 was in the second place, it was positioned at second slideway 21 fully.
In conjunction with referring to shown in Figure 6, in the present embodiment, first connecting portion 10 is first sleeve, second connecting portion 20 is second sleeve, first sleeve is fixedly connected in the arm body portion 30, and second sleeve is fixedly connected on the arm tip 40, and the opening of first sleeve and second sleeve is oppositely arranged, the slidiing pin of locking piece 50 for being mounted slidably in first sleeve and second sleeve, above-mentioned first direction is the radial direction of slidiing pin.Preferably, first sleeve is identical with the internal diameter of second sleeve, and when jib is in the lifting state (when the bottom of arm body portion 30 and arm tip 40 connects), first sleeve and the coaxial setting of second sleeve.First sleeve and second sleeve also can be other structure, for example square cartridge structure or other polygon tubular structure.Preferably, be provided with reinforced rib at the connection location place of first sleeve and arm body portion 30 and the connection location place of second sleeve and arm tip 40.
This slidiing pin when jib is positioned at assembled state by slide into second slideway 21 of second sleeve automatically from gravity, in such cases, slidiing pin is positioned at second sleeve fully, first sleeve and second sleeve break away from, install or dismounting arm body portion 30 and arm tip 40 no matter be, all do not need first sleeve and second sleeve are operated, so the mounting or dismounting of jib are very convenient.Be slidiing pin when jib is positioned at assembled state, the height of first sleeve is higher than the height of second sleeve, and first sleeve and second sleeve are all with respect to the terrain slope setting.
When jib has been positioned at the arm state, arm body portion 30 raises up behind the certain angle, the friction force between clothes itself and second slideway 21 is made every effort to overcome in the deadweight of slidiing pin, begin to slide into from second slideway 21 cohesive position of second slideway 21 and first slideway 11, simultaneously, the bottom of arm tip 40 is drawn close to the bottom of arm body portion 30, and finally is pressed on the lower crosspiece of arm body portion 30.In this process, slidiing pin slides into the cohesive position of first slideway 11 and second slideway 21 gradually from second slideway 21, and finally locks the relative position of first sleeve and second sleeve, and then the connection structure between lock arm body portion 30 and the arm tip 40.Because what the slidiing pin in the present embodiment relied on self fully realizes the change in location of bearing pin from gravity, therefore can realize automatic insert-pull pin, avoid the workman to operate issuable dangerous situation, effectively reduced labour intensity, improved the degree of automation of complete machine, simple, be convenient to from loading and unloading, especially for aloft work, can improve safety and the reliability of crane arm support operation more.
In order to guarantee the smooth degree of slidiing pin motion, be free-running fit between slidiing pin and first sleeve and second sleeve, its tolerance clearance can be bigger, but the connection structure of arm body portion 30 and arm tip 40 is prerequisite when the arm state not influence.Two ends at slidiing pin can also arrange the guiding frustum, can play directional tagging to slidiing pin, prevent that the gap at the connection location place of first sleeve and second sleeve from causing adverse effect to the motion of slidiing pin.
In order to guarantee the movement position of slidiing pin, in first sleeve and second sleeve, all can fixedly install the locating part 12 of the movement position that limits slidiing pin.The position is set guarantees locking piece 50 when the cohesive position of first sleeve and second sleeve of locating part 12 in first sleeve, the middle part of locking piece 50 just in time is positioned at the linking gap location of first sleeve and second sleeve.The position is set guarantees that locking piece 50 can be positioned at second sleeve fully of locating part 12 in second sleeve can not influence first sleeve and second sleeve and be at jib and install or mounting or dismounting operation during disassembly status.
Locating part 12 also can only be arranged in first sleeve or second sleeve, and locating part 12 perhaps is not set, and only guarantees the movement position of locking piece 50 by the length that limits first sleeve and second sleeve.Locating part 12 can be baffle plate, projection or other any structure that can play position-limiting action to the motion of slidiing pin.
Preferably, jib anti-dumping mechanism also comprises the testing agency of the movement position that detects locking piece 50, and this testing agency guarantees jib anti-dumping mechanism normal operation for detection of the position of locking piece 50 when jib is in different conditions.Testing agency comprises the position transduser 71 that is arranged on first sleeve and/or second sleeve.Position transduser 71 can be arranged on the locating part 12, also can be arranged on the outer wall of sleeve, can detect slidiing pin and whether reach the desired location.The position transduser 71 that wherein is positioned on first sleeve is used for the attitude of finishing of slidiing pin is detected, and the position transduser 71 that is positioned on second sleeve is used for the disengaging attitude of slidiing pin is detected.Jib anti-dumping mechanism can also comprise controller, and this controller is connected with testing agency, when detecting abnormal operating state in testing agency, gives the alarm, and avoids the generation of safety misadventure.
Testing agency can also comprise the angular transducer 72 that is arranged in the arm body portion 30, and this angular transducer 72 is for detection of the angle that raises up of arm body portion 30.Controller is judged whether jib anti-dumping mechanism normally finishes the insert-pull pin action, and is correspondingly sent control signal according to the signal of position transduser 71 and angular transducer 72 transmission.
In a unshowned embodiment, jib anti-dumping mechanism can also comprise driver train, and this driver train guarantees every function of slidiing pin according to the movement position of the angle control slidiing pin of the arm body portion 30 of jib.In such cases, since jib anti-dumping mechanism be not rely on slidiing pin carry out the adjustment of position from gravity, therefore, can be when jib be in installation or disassembly status, make slidiing pin under the driving effect of driver train, be positioned at first sleeve or second sleeve fully, when jib has been in the arm state, make slidiing pin be positioned at the cohesive position of first sleeve and second sleeve.The driver train here for example is electric push rod or drives oil cylinder etc.Driver train is connected with controller, controls the motion of driver train by controller, guarantees that slidiing pin arrives the predetermined work position.
In conjunction with referring to shown in Figure 4, when jib was positioned at assembled state, under the effect of slidiing pin self gravitation, slidiing pin was positioned at second sleeve fully, did not have annexation between first sleeve and second sleeve.
In conjunction with referring to shown in Figure 5, when the arm body portion 30 of jib began to raise up, the axis of first sleeve and second sleeve and the angle between the ground began to change, and when the axis of first sleeve and second sleeve paralleled with ground, slidiing pin remained in second sleeve.
In conjunction with referring to shown in Figure 6, when the arm body portion 30 of jib raises up certain angle, slidiing pin overcomes the friction force between itself and second sleeve and first sleeve, beginning is slided in first sleeve gradually, and along with the raise up increase of angle of arm body portion 30, finally slide into the position at locating part 12 places, finish being connected of first sleeve and second sleeve.In such cases, owing to have top bearing pin and 50 two connection locations of locking piece between arm body portion 30 and the arm tip 40, therefore form a fixed connection, arm tip 40 is when being subjected to the application force of unloading suddenly, can give arm body portion 30 with this force transmission, and with 30 motions of arm body portion, therefore, overthrow accident can not take place, can guarantee the safe action of jib.
In conjunction with referring to shown in Figure 3, according to embodiments of the invention, elevator boom rack comprises arm body portion 30 and the arm tip 40 that is connected rotationally by the top bearing pin with arm body portion 30, also comprise jib anti-dumping mechanism, this jib anti-dumping mechanism is above-mentioned jib anti-dumping mechanism, first connecting portion 10 of jib anti-dumping mechanism is fixedly connected in the arm body portion 30, and second connecting portion 20 of jib anti-dumping mechanism is fixedly connected on the arm tip 40.Preferably, first connecting portion 10 is fixedly connected on the side away from the top bearing pin of arm body portion 30, and second connecting portion 20 is fixedly connected on the side away from the top bearing pin of arm tip 40.
According to embodiments of the invention, crane comprises elevator boom rack, and this elevator boom rack is above-mentioned elevator boom rack.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect: locking piece is arranged between first connecting portion and second connecting portion movably; Locking piece have prevent first connecting portion and second connecting portion along the primary importance of first direction generation relative motion and make first connecting portion and second connecting portion along the second place of first direction generation relative motion, this first direction is perpendicular to the moving direction of locking piece.In hoisting crane work process, locking piece can be adjusted annexation between first connecting portion and second connecting portion according to the state of hoisting crane, when crane is in installing condition or other off working state, locking piece can be adjusted to the second place, prevent that the relative motion on first direction causes obstruction to locking piece to first connecting portion and second connecting portion, first connecting portion and second connecting portion can be broken away from, be convenient to dismounting between the arm body portion of crane and the arm tip more thereby make, and can not cause obstruction to the mounting or dismounting of arm body portion and arm tip.When crane has been in the arm state, then locking piece can be adjusted to primary importance, first connecting portion and second connecting portion are linked together, this moment, locking piece was positioned in the middle of first connecting portion and second connecting portion, and can prevent between first connecting portion and second connecting portion along first direction generation relative motion, therefore first connecting portion and second connecting portion are locked together, pass through locking piece, the cooperation of first connecting portion and second connecting portion, can make between the arm body portion of jib and the arm tip and have more stable connection structure, therefore can effectively prevent in the jib course of action, the arm tip is owing to reasons such as unloading are suddenly tumbled, the arm body portion that avoids and then may cause tumbles, and has effectively guaranteed the safe operation of crane.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a jib anti-dumping mechanism is characterized in that, comprising:
First connecting portion (10) is arranged on first end of the arm body portion (30) of jib;
Second connecting portion (20) is arranged on first end that is connected with described arm body portion (30) of the arm tip (40) of described jib;
Locking piece (50) is arranged between described first connecting portion (10) and second connecting portion (20) movably;
Described locking piece (50) have prevent described first connecting portion (10) and described second connecting portion (20) along the primary importance of first direction generation relative motion and make described first connecting portion (10) and described second connecting portion (20) along the second place of first direction generation relative motion, this first direction is perpendicular to the moving direction of described locking piece (50).
2. jib anti-dumping according to claim 1 mechanism is characterized in that,
Described first connecting portion (10) has first slideway (11);
Described second connecting portion (20) has second slideway (21), and described first slideway (11) and described second slideway (21) can arrange with being connected;
Described locking piece (50) is mounted slidably along described first slideway (11) and described second slideway (21), and described locking piece (50) has the described primary importance at the cohesive position place that is connected described first slideway (11) and described second slideway (21), and away from the described second place of described cohesive position.
3. jib anti-dumping according to claim 2 mechanism, it is characterized in that, described first connecting portion (10) is for being fixedly connected on first sleeve in the described arm body portion (30), described second connecting portion (20) is for being fixedly connected on second sleeve on the described arm tip (40), the opening of described first sleeve and described second sleeve is oppositely arranged, the slidiing pin of described locking piece (50) for being mounted slidably in described first sleeve and described second sleeve.
4. jib anti-dumping according to claim 3 mechanism, it is characterized in that, described slidiing pin is free to slide to described second sleeve when described jib is positioned at assembled state, be free to slide to the cohesive position of described first sleeve and described second sleeve when described jib has been positioned at the arm state.
5. jib anti-dumping according to claim 3 mechanism is characterized in that be free-running fit between described slidiing pin and described first sleeve and described second sleeve, the two ends of described slidiing pin are provided with the guiding frustum.
6. jib anti-dumping according to claim 3 mechanism is characterized in that, is set with the locating part (12) of the movement position that limits described slidiing pin in described first sleeve and/or described second sleeve.
7. according to each described jib anti-dumping mechanism in the claim 1 to 6, it is characterized in that described jib anti-dumping mechanism also comprises the testing agency of the movement position that detects described locking piece (50).
8. jib anti-dumping according to claim 7 mechanism is characterized in that described testing agency comprises the position transduser (71) that is arranged on described first connecting portion (10) and/or described second connecting portion (20).
9. jib anti-dumping according to claim 8 mechanism is characterized in that described testing agency also comprises the angular transducer (72) that is arranged in the described arm body portion (30).
10. elevator boom rack, comprise arm body portion (30) and the arm tip (40) that is connected rotationally by the top bearing pin with described arm body portion (30), it is characterized in that, also comprise jib anti-dumping mechanism, described jib anti-dumping mechanism is each described jib anti-dumping mechanism in the claim 1 to 9, first connecting portion (10) of described jib anti-dumping mechanism is fixedly connected in the described arm body portion (30), and second connecting portion (20) of described jib anti-dumping mechanism is fixedly connected on the described arm tip (40).
11. elevator boom rack according to claim 10, it is characterized in that, described first connecting portion (10) is fixedly connected on the side away from described top bearing pin of described arm body portion (30), and described second connecting portion (20) is fixedly connected on the side away from described top bearing pin of described arm tip (40).
12. a crane comprises elevator boom rack, it is characterized in that, described elevator boom rack is claim 10 or 11 described elevator boom racks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310166850.4A CN103232002B (en) | 2013-05-08 | 2013-05-08 | Boom anti-tilting mechanism, crane boom comprising boom anti-tilting mechanism and engineering crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310166850.4A CN103232002B (en) | 2013-05-08 | 2013-05-08 | Boom anti-tilting mechanism, crane boom comprising boom anti-tilting mechanism and engineering crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103232002A true CN103232002A (en) | 2013-08-07 |
| CN103232002B CN103232002B (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310166850.4A Active CN103232002B (en) | 2013-05-08 | 2013-05-08 | Boom anti-tilting mechanism, crane boom comprising boom anti-tilting mechanism and engineering crane |
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| CN (1) | CN103232002B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109573857A (en) * | 2018-12-04 | 2019-04-05 | 青岛大学 | A kind of antidumping pedestal crane |
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| US4492311A (en) * | 1981-08-17 | 1985-01-08 | Fmc Corporation | Coupling and latching mechanism for extensible boom |
| CN201801331U (en) * | 2010-08-31 | 2011-04-20 | 辽宁抚挖重工机械股份有限公司 | Self-suction type oil cylinder anti-overturn device |
| CN203237960U (en) * | 2013-05-08 | 2013-10-16 | 中联重科股份有限公司 | Boom anti-tilting mechanism, crane boom comprising boom anti-tilting mechanism and engineering crane |
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2013
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| US4492311A (en) * | 1981-08-17 | 1985-01-08 | Fmc Corporation | Coupling and latching mechanism for extensible boom |
| CN201801331U (en) * | 2010-08-31 | 2011-04-20 | 辽宁抚挖重工机械股份有限公司 | Self-suction type oil cylinder anti-overturn device |
| CN203237960U (en) * | 2013-05-08 | 2013-10-16 | 中联重科股份有限公司 | Boom anti-tilting mechanism, crane boom comprising boom anti-tilting mechanism and engineering crane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109573857A (en) * | 2018-12-04 | 2019-04-05 | 青岛大学 | A kind of antidumping pedestal crane |
| CN109573857B (en) * | 2018-12-04 | 2020-07-28 | 青岛大学 | Anti-overturning pedestal crane |
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| Publication number | Publication date |
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| CN103232002B (en) | 2015-04-01 |
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