CN110894047A - Crawler crane - Google Patents
Crawler crane Download PDFInfo
- Publication number
- CN110894047A CN110894047A CN201911353386.3A CN201911353386A CN110894047A CN 110894047 A CN110894047 A CN 110894047A CN 201911353386 A CN201911353386 A CN 201911353386A CN 110894047 A CN110894047 A CN 110894047A
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- China
- Prior art keywords
- lubricating oil
- hole
- oil
- crawler crane
- storage groove
- 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.)
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- 239000010687 lubricating oil Substances 0.000 claims abstract description 125
- 239000003921 oil Substances 0.000 claims description 114
- 238000003860 storage Methods 0.000 claims description 60
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 238000005461 lubrication Methods 0.000 description 11
- 239000000243 solution Substances 0.000 description 6
- 241000221535 Pucciniales Species 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a crawler crane, which relates to the technical field of engineering machinery and comprises a base and an elongated beam, wherein a pin shaft is arranged on the base, a sleeving part is arranged at one end of the elongated beam, a sleeving hole is formed in the sleeving part, and the pin shaft is sleeved in the sleeving hole so that the elongated beam can rotate relative to the base; the sleeving part is provided with a first lubricating oil hole, one end of the first lubricating oil hole is communicated with the outside, and the other end of the first lubricating oil hole is communicated with the sleeving hole. The invention can add lubricating oil into the sleeved hole through the first lubricating oil hole, thereby playing a role of lubricating the pin shaft, avoiding the rusting of the pin shaft, and solving the problem that the lengthened beam is difficult to switch between a folding state and an unfolding state due to rusting or overlarge friction at the hinged position when being used for a long time.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a crawler crane.
Background
The crawler crane is common hoisting equipment at present, and is widely applied to production and construction. The small-tonnage crawler crane is widely applied due to the advantages of simple structure, small volume, investment saving and the like. The small-tonnage crawler crane has a limited carrying area, so that the base of the crawler crane is usually provided with the extension beam, and the extension beam is usually installed on the base of the crawler crane in a hinged manner so as to be conveniently unfolded or folded as required.
However, with the accumulation of the service time of the crawler crane, when the extension beam of the crawler crane works for a long time in the extended state and is ready to be furled again, the extension beam is often found to be difficult to be successfully furled due to rusting or overlarge friction at the hinged position; similarly, there is a problem that the folded state is difficult to unfold even when the folded state is maintained for a long time.
Disclosure of Invention
The invention aims to provide a crawler crane, which solves the technical problem that the lengthened beam is difficult to switch between a folded state and an unfolded state due to rusting or overlarge friction at a hinged position when the lengthened beam is used for a long time in the prior art.
The crawler crane provided by the invention comprises a base and an elongated beam, wherein a pin shaft is arranged on the base, a sleeving part is arranged at one end of the elongated beam, a sleeving hole is formed in the sleeving part, and the pin shaft is sleeved in the sleeving hole so that the elongated beam can rotate relative to the base;
the sleeve is provided with a first lubricating oil hole, one end of the first lubricating oil hole is communicated with the outside, and the other end of the first lubricating oil hole is communicated with the sleeve.
Further, the quantity of first lubrication oil hole is a plurality of, and is a plurality of first lubrication oil hole is followed the axial of round pin axle is in proper order the interval set up on the cover portion.
Further, the extension beam still includes the lubricating oil cover, the lubricating oil ways is established on the periphery wall of round pin axle, and with the pore wall butt in hole is established to the cover, be provided with the oil feed recess along its circumference on the lateral surface of lubricating oil cover, be provided with the second lubricated oil port on the oil feed recess, the second lubricated oil port intercommunication the oil feed recess with the hole is established to the cover, first lubricated oil port with oil feed recess intercommunication.
Further, be provided with the oil storage recess on the medial surface of lubricating oil cover, the oil storage recess is the annular, the oil storage recess with second lubrication oil hole intercommunication.
Furthermore, the number of the oil storage grooves is two, the oil storage grooves are respectively a first oil storage groove and a second oil storage groove, the first oil storage groove and the second oil storage groove are respectively arranged in an elliptical ring shape, the ring surface of the first oil storage groove and the bottom surface of the lubricating oil sleeve are arranged in an acute angle, the ring surface of the second oil storage groove and the bottom surface of the lubricating oil sleeve are arranged in an obtuse angle, and the first oil storage groove and the second oil storage groove are communicated in the middle of the first oil storage groove and the second oil storage groove in the height direction in a crossed manner;
one crossing point of the first oil storage groove and the second oil storage groove is communicated with the second lubricating oil hole.
Further, corresponding to the lubricating oil sleeve, the inner wall of the sleeve installing hole is sunken outwards to form a step extending along the circumferential direction of the sleeve installing hole, and the lubricating oil sleeve is installed on the step.
Furthermore, the base comprises a first fixing plate and a second fixing plate which are arranged at an interval, a first end of the pin shaft is connected with the first fixing plate, and a second end of the pin shaft is connected with the second fixing plate;
the sleeving part is arranged between the first fixing plate and the second fixing plate.
Further, the both ends of the length direction of portion along the round pin axle are established to the cover are provided with the protrusion reinforcing part respectively, first lubricated oil port sets up on the protrusion reinforcing part.
Furthermore, a first flitch is arranged between the protruding reinforcing part close to the first fixed plate and the first fixed plate, and the first flitch is sleeved on the peripheral wall of the pin shaft;
be close to the protruding reinforcing part of second fixed plate with be provided with the second flitch between the second fixed plate, the second flitch cover is established on the periphery wall of round pin axle.
Furthermore, an oil nozzle hole is formed in one end, communicated with the outside, of the first lubricating oil hole, and the oil nozzle hole is detachably connected with a sealing plug.
The invention provides a crawler crane, which comprises a base and an elongated beam, wherein a pin shaft is arranged on the base, one end of the elongated beam is provided with a sleeving part, a sleeving hole is formed in the sleeving part, and a pin shaft is sleeved in the sleeving hole so that the elongated beam can rotate relative to the base; the sleeving part is provided with a first lubricating oil hole, one end of the first lubricating oil hole is communicated with the outside, and the other end of the first lubricating oil hole is communicated with the sleeving hole. According to the crawler crane, the sleeving part of the elongated beam is rotatably connected with the base through the pin shaft, so that the elongated beam can be folded on the base of the crawler crane through the rotation of the elongated beam around the pin shaft, or the elongated beam is unfolded relative to the base of the crawler crane. In the use of extension roof beam, the downthehole lubricating oil that adds is established to the cover in the first lubricating oil hole of accessible, thereby play the lubrication action to the round pin axle, avoid the round pin axle to rust, and if the relative base of round pin axle rotates, lubricating oil can reduce the frictional force between round pin axle and the base, if the relative round pin axle of portion of establishing is the cover rotates, lubricating oil can reduce the frictional force between the inner wall in round pin axle and cover establishment hole, solved the extension roof beam when using for a long time, because articulated position rusts or the friction is too big, appear easily to be difficult to draw in and expand the problem of switching between the two kinds of states.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a crawler crane according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of section A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of one axial orientation of a base and an elongated beam of a crawler crane according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of another axial orientation of the attachment of the base of the crawler crane to the elongated beam provided by the embodiments of the present invention;
fig. 5 is a schematic cross-sectional view of a sleeve portion and a lubricating oil sleeve of a crawler crane according to an embodiment of the present invention;
fig. 6 is an enlarged schematic axial view of a lubricating oil bushing of an elongated beam according to an embodiment of the present invention.
Icon: 100-a base; 110-a first fixing plate; 120-a second fixation plate; 200-lengthening a beam; 210-a nesting portion; 211-a first lubrication oil hole; 212-a convex reinforcement; 213-step; 300-a pin shaft; 400-lubricating oil jacket; 410-oil inlet grooves; 411-second lubrication oil hole; 420-oil storage groove; 421-a first oil storage groove; 422-second oil storage groove; 510-a first flitch; 520-a second flitch; 600-sealing plug.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 6, the embodiment provides a crawler crane, which includes a base 100 and an elongated beam 200, a pin 300 is disposed on the base 100, a sleeve portion 210 is disposed at one end of the elongated beam 200, a sleeve hole is disposed on the sleeve portion 210, and the pin 300 is sleeved in the sleeve hole, so that the elongated beam 200 can rotate relative to the base 100. The sleeving part 210 is provided with a first lubricating oil hole 211, one end of the first lubricating oil hole 211 is communicated with the outside, and the other end of the first lubricating oil hole 211 is communicated with the sleeving hole.
Specifically, as shown in fig. 1, two ends of one side edge of the base 100 are respectively connected with an elongated beam 200, and the pin 300 of the elongated beam 200 is disposed along a vertical direction perpendicular to the plane of the base 100. In order to realize that the elongated beam 200 can rotate relative to the base 100, the base 100 may be provided with a shaft hole, the pin 300 can rotate in the shaft hole of the base 100, and the sleeving hole of the sleeving part 210 is fixedly connected with the pin 300; or the pin 300 may be fixedly connected to the base 100, and the corresponding sleeving part 210 may rotate around the pin 300 with the pin 300 as an axis; naturally, the pin 300 may be rotatably connected to the base 100, and the sleeve portion 210 and the pin 300 may also be rotatably connected.
In this embodiment, the pin 300 is rotatably connected to the base 100, and the sleeve portion 210 is also rotatably connected to the pin 300. In order to ensure that the elongated beam 200 can have a certain relative stability with the base 100 when the elongated beam 200 rotates in place relative to the base 100, two ends of the pin 300 can apply a pressing force to the base 100 and the elongated beam 200 in the axial direction of the pin 300, that is, the pin 300 can press and fixedly abut the base 100 and the elongated beam 200 by providing a shoulder or a pin at two ends thereof, so that a certain friction force is provided between the base 100 and the elongated beam 200. It should be noted that the friction force generated by the pressing of the base 100 and the elongated beam 200 should be no greater than the external force that can be manually or mechanically applied to enable the two to rotate relative to each other, so as to enable the elongated beam 200 and the base 100 to rotate relative to each other.
The first lubricating oil hole 211 is communicated with the sleeve setting hole, that is, the first lubricating oil hole 211 can introduce lubricating oil to the circumferential side wall of the pin shaft 300. When using, inject lubricating oil into first lubrication hole 211 through the one end that first lubrication hole 211 is connected with the external world, lubricating oil flows into the cover through first lubrication hole 211 and establishes the hole, lubricating oil and the contact of the circumference lateral wall of round pin axle 300, because the mobility of oil, can play the lubrication action to whole round pin axle 300.
In the crawler crane of the present embodiment, the sleeve portion 210 of the elongated beam 200 is rotatably connected to the base 100 through the pin 300, so that the elongated beam 200 can be folded on the base 100 of the crawler crane through the rotation of the elongated beam 200 around the pin 300, or the elongated beam 200 is unfolded relative to the base 100 of the crawler crane. In the use of extension roof beam 200, the downthehole lubricating oil that adds is established to the cover to the first lubricated oil hole 211 of accessible, thereby play the lubrication action to round pin axle 300, avoid round pin axle 300 to rust, if round pin axle 300 rotates relative base 100, can reduce the frictional force between round pin axle 300 and the base 100, if the relative round pin axle 300 of portion 210 is established to the cover rotates, can reduce the frictional force between the inner wall in round pin axle 300 and the cover establishment hole, solved extension roof beam 200 when long-term the use, because articulated position rusts or the friction is too big, appear easily to be difficult to draw in and expand the problem of switching between two kinds of states.
Further, the number of the first lubricating oil holes 211 may be plural, and the plural first lubricating oil holes 211 are sequentially disposed on the sleeve portion 210 at intervals along the axial direction of the pin shaft 300.
It can be understood that the plurality of first lubricating oil holes 211 can be filled with lubricating oil from a plurality of positions in the axial direction of the pin shaft 300, so that the circumferential side walls of the pin shaft 300 can be lubricated.
Preferably, as shown in fig. 2, this embodiment crawler crane further includes a lubricating oil sleeve 400, the lubricating oil sleeve 400 is sleeved on the outer peripheral wall of the pin shaft 300, and abuts against the hole wall of the sleeve-equipped hole, an oil inlet groove 410 is provided along the circumferential direction of the lubricating oil sleeve 400 on the outer side surface of the lubricating oil sleeve 400, a second lubricating oil hole 411 is provided on the oil inlet groove 410, the second lubricating oil hole 411 is communicated with the oil inlet groove 410 and the sleeve-equipped hole, and the first lubricating oil hole 211 is communicated with the oil inlet groove 410.
It can be appreciated that the circumferentially disposed oil inlet groove 410 allows the first oil hole 211 and the second oil hole 411 to communicate without alignment. Specifically, the lubricating oil in the first lubricating oil hole 211 may enter the oil inlet recess 410 from any portion of the oil inlet recess 410, and since the oil inlet recess 410 is annularly communicated, the lubricating oil in the oil inlet recess 410 may enter the jacket hole from the second lubricating oil hole 411. That is, the oil inlet groove 410 enables the first lubricating oil hole 211 and the second lubricating oil hole 411 to be communicated at any position in the process that the elongated beam 200 rotates relative to the base 100, thereby facilitating the use of the lubricating oil jacket 400 and the injection of the lubricating oil.
For convenience of understanding, the part a in fig. 1 and fig. 2 are schematic views of respective parts separated in the axial direction of the pin 300. In the present embodiment, the first lubricating oil hole 211 and the second lubricating oil hole 411 are aligned exactly in the radial direction of the pin shaft 300 in the drawing.
Further, as shown in fig. 3 to 6, an oil storage groove 420 is further formed on the inner side surface of the lubricating oil sleeve 400, the oil storage groove 420 is annular, and the oil storage groove 420 is communicated with the second lubricating oil hole 411. Specifically, the number of the oil storage grooves 420 is plural, the plurality of oil storage grooves 420 are cross-communicated, and the second lubricating oil hole 411 is connected to one cross point where the plurality of oil storage grooves 420 cross.
Wherein, the oil storage groove 420 can contain a certain amount of lubricating oil, so that the pin 300 can be in a lubricating state for a long time without continuous oil injection. The plurality of oil storage grooves 420 are arranged in a crossing manner, so that the same second lubricating oil hole 411 can be shared, and the lubricating oil can be conveniently communicated in the oil storage grooves 420.
In this embodiment, the number of the oil storage grooves 420 is two, which are the first oil storage groove 421 and the second oil storage groove 422 respectively, the first oil storage groove 421 and the second oil storage groove 422 are respectively disposed in an elliptical ring shape, the ring surface of the first oil storage groove 421 and the bottom surface of the lubricating oil sleeve 400 are disposed in an acute angle, the ring surface of the second oil storage groove 422 and the bottom surface of the lubricating oil sleeve 400 are disposed in an obtuse angle, and the first oil storage groove 421 and the second oil storage groove 422 are communicated with each other in a crossing manner in the middle of the height direction of the first oil storage groove 421 and the second oil storage groove 422.
Wherein, the height direction refers to the axial direction along the pin shaft 300, and the middle part of the first oil storage groove 421 in the height direction refers to the middle position of the connection line of the lowest position and the highest position of the first oil storage groove 421 along the axial direction of the pin shaft 300; the middle of the second oil storage groove 422 in the height direction refers to a middle position of a line connecting a lowest position and a highest position of the second oil storage groove 422 in the axial direction of the pin shaft 300.
The annulus of the first oil storing recess 421 refers to an elliptical surface on which an elliptical ring of the first oil storing recess 421 is located, and the annulus of the second oil storing recess 422 refers to an elliptical surface on which an elliptical ring of the second oil storing recess 422 is located.
The angle formed by the first oil storing recess 421 and the second oil storing recess 422 with respect to the bottom surface of the lubricating oil jacket 400 is based on one direction of the bottom surface of the lubricating oil jacket 400, and in the present embodiment, it can be understood that the angle is based on the right direction in the left-right direction of fig. 6. The first oil storing recess 421 and the second oil storing recess 422 may be identical elliptical rings.
As shown in fig. 3, the first oil storage groove 421 is at the upper portion of the lubricating oil jacket 400 when it is located at the left side of the lubricating oil jacket 400, and the first oil storage groove 421 is at the lower portion of the lubricating oil jacket 400 when it is located at the right side of the lubricating oil jacket 400; the second oil storage groove 422 is at the lower portion of the lubricating oil jacket 400 when it is located at the left side of the lubricating oil jacket 400, and the second oil storage groove 422 is at the upper portion of the lubricating oil jacket 400 when it is located at the right side of the lubricating oil jacket 400. The first and second lubricating oil jackets 400, 400 should have an intersection point in the cross-sectional view of fig. 3 taken in the direction perpendicular to the paper, that is, as shown in fig. 4, the first and second lubricating oil jackets 400, 400 intersect on both sides of the lubricating oil jacket 400, and the left intersection point of the two intersection points communicates with the second lubricating oil hole 411; whereas the upper portion of the elliptical ring shape seen in the cross-sectional view of fig. 5 with the pin shaft 300 removed should be a portion of the first oil reserving groove 421, the lower portion of the elliptical ring shape should be a portion of the second oil reserving groove 422, and on the other inner side surface of the sleeve, not shown, opposite to that of fig. 5, the upper portion of the elliptical ring shape should be a portion of the second oil reserving groove 422, and the lower portion of the elliptical ring shape should be a portion of the first oil reserving groove 421.
Fig. 4 is a cross-sectional view of fig. 3 or 6 in a direction perpendicular to the paper plane.
The base 100 of the crawler crane of the embodiment comprises a first fixing plate 110 and a second fixing plate 120 which are oppositely arranged at intervals, wherein a first end of a pin shaft 300 is connected with the first fixing plate 110, and a second end of the pin shaft 300 is connected with the second fixing plate 120; the sleeve portion 210 is disposed between the first fixing plate 110 and the second fixing plate 120.
Wherein, the two ends of the sleeve part 210 along the length direction of the pin shaft 300 are respectively provided with a protruding reinforcing part 212, and the first lubricating oil hole 211 is arranged on the protruding reinforcing part 212.
As shown in fig. 2, the two protruding reinforcing parts 212 are provided with the first lubricating oil holes 211, and one lubricating oil jacket 400 is provided inside each protruding reinforcing part 212. Specifically, as shown in fig. 3 or 5, in correspondence to the lubricating oil jacket 400, the inner wall of the jacket hole inside the protruding reinforcing portion 212 is recessed outward to form a step 213 extending in the circumferential direction of the jacket hole, and the lubricating oil jacket 400 is mounted on the step 213; and the step 213 provided corresponding to each lubricating oil jacket 400 is located at one end of the inner side of the lubricating oil jacket 400 in the axial direction, so as to prevent the lubricating oil jacket 400 from moving toward the middle of the pin shaft 300.
Further, a first attachment plate 510 is disposed between the protruding reinforcement portion 212 close to the first fixing plate 110 and the first fixing plate 110, and the first attachment plate 510 is sleeved on the outer circumferential wall of the pin shaft 300; a second attachment plate 520 is disposed between the protruding reinforcement portion 212 close to the second fixing plate 120 and the second fixing plate 120, and the second attachment plate 520 is sleeved on the outer circumferential wall of the pin shaft 300.
The first and second attachment plates 510 and 520 may form outward stops for the lubricant cover 400 at both ends, so as to prevent the lubricant cover 400 from slipping off and prevent the lubricant from leaking out and falling onto the base 100.
It can be appreciated that the protrusion reinforcement portion 212 facilitates the placement of the socket hole on the socket portion 210 on the one hand, and secondly, enhances the strength of the socket portion 210. Set up first lubricating oil hole 211 and lubricating oil cover 400 on two protruding reinforcing portions 212 respectively for lubricating oil lubricates the round pin axle 300 from the both ends of round pin axle 300, has improved lubricated effect.
The first lubricating oil hole 211 of the crawler crane of the embodiment is provided with an oil nozzle hole at one end communicated with the outside, and the oil nozzle hole can be detachably connected with a sealing plug 600. The sealing plug 600 is used to seal the first lubricating oil hole 211 when the injection of lubricating oil is not required. The sealing plug 600 may be a rubber plug.
The assembly process of the lengthened beam 200 of the crawler crane of the embodiment is as follows: firstly, a first lubricating oil hole 211 is processed on the sleeving part 210 of the lengthened beam 200, and an oil nozzle hole is processed at one end of the first lubricating oil communicated with the outside; after the lubricating oil sleeve 400 is cooled by liquid nitrogen at-180 ℃ to shrink, the lubricating oil sleeve is placed on the step 213 of the sleeve portion 210 of the elongated beam 200, and the second lubricating oil hole 411 of the lubricating oil sleeve 400 and the oil nozzle on the elongated beam 200 are ensured to be concentric as much as possible. The assembled extension beam 200 is assembled to the base 100 by inserting the pin 300. An appropriate amount of lubricating oil is injected from the first lubricating oil hole 211 of the elongated beam 200.
It should be noted that, in addition to the above-described structure, the crawler crane of the present embodiment may refer to the prior art.
To sum up, this embodiment crawler crane, when needs extension beam 200 pivoted, add lubricating oil in extension beam 200's first lubricated oil hole 211 can, solved extension beam 200 when long-term the use, because articulated position rusts or rubs too big, appear easily being difficult to draw in and expand the problem of switching between two kinds of states, low in manufacturing cost, the assembly is simple and easy, the maintenance is convenient.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A crawler crane is characterized by comprising a base (100) and an elongated beam (200), wherein a pin shaft (300) is arranged on the base (100), a sleeving part (210) is arranged at one end of the elongated beam (200), a sleeving hole is formed in the sleeving part (210), and the pin shaft (300) is sleeved in the sleeving hole so that the elongated beam (200) can rotate relative to the base (100);
the sleeve is provided with a first lubricating oil hole (211) in the sleeve part (210), one end of the first lubricating oil hole (211) is communicated with the outside, and the other end of the first lubricating oil hole (211) is communicated with the sleeve hole.
2. The crawler crane according to claim 1, wherein the number of the first lubricating oil holes (211) is plural, and the plural first lubricating oil holes (211) are sequentially arranged on the sleeve portion (210) at intervals along the axial direction of the pin shaft (300).
3. The crawler crane according to claim 1, wherein the extension beam (200) further comprises a lubricating oil sleeve (400), the lubricating oil sleeve (400) is sleeved on the outer peripheral wall of the pin shaft (300) and abutted to the hole wall of the sleeved hole, an oil inlet groove (410) is formed in the outer side surface of the lubricating oil sleeve (400) along the circumferential direction of the lubricating oil sleeve, a second lubricating oil hole (411) is formed in the oil inlet groove (410), the second lubricating oil hole (411) is communicated with the oil inlet groove (410) and the sleeved hole, and the first lubricating oil hole (211) is communicated with the oil inlet groove (410).
4. The crawler crane according to claim 3, wherein an oil storage groove (420) is provided on an inner side surface of the lubricating oil bushing (400), the oil storage groove (420) is annular, and the oil storage groove (420) communicates with the second lubricating oil hole (411).
5. The crawler crane according to claim 4, wherein the number of the oil storage grooves (420) is two, and the first oil storage groove (421) and the second oil storage groove (422) are respectively provided, the first oil storage groove (421) and the second oil storage groove (422) are respectively provided in an elliptical ring shape, the ring surface of the first oil storage groove (421) is provided at an acute angle to the bottom surface of the lubricating oil jacket (400), the ring surface of the second oil storage groove (422) is provided at an obtuse angle to the bottom surface of the lubricating oil jacket (400), and the first oil storage groove (421) and the second oil storage groove (422) are in cross communication at the middle portions in the height direction;
one of the intersections of the first oil reservoir groove (421) and the second oil reservoir groove (422) communicates with the second lubricating oil hole (411).
6. The crawler crane according to claim 3, wherein an inner wall of the jacket hole is recessed outward corresponding to the lubricating oil jacket (400) to form a step (213) extending in a circumferential direction of the jacket hole, and the lubricating oil jacket (400) is mounted on the step (213).
7. Crawler crane according to any of claims 1 to 6, wherein the base (100) comprises a first fixing plate (110) and a second fixing plate (120) arranged at an interval, the first end of the pin (300) is connected with the first fixing plate (110), and the second end of the pin (300) is connected with the second fixing plate (120);
the sheathing part (210) is disposed between the first fixing plate (110) and the second fixing plate (120).
8. The crawler crane according to claim 7, wherein the sleeve portion (210) is provided with a protruding reinforcement portion (212) at both ends in a length direction of the pin shaft (300), respectively, and the first lubricating oil hole (211) is provided on the protruding reinforcement portion (212).
9. Crawler crane according to claim 8, wherein a first plate (510) is arranged between the protruding reinforcement (212) adjacent to the first fixing plate (110) and the first fixing plate (110), the first plate (510) being fitted over the peripheral wall of the pin (300);
be close to protrusion reinforcing part (212) of second fixed plate (120) with be provided with second flitch (520) between second fixed plate (120), second flitch (520) cover is established on the periphery wall of round pin axle (300).
10. The crawler crane according to claim 1, wherein an end of the first lubricating oil hole (211) communicating with the outside is provided with a nozzle hole to which a sealing plug (600) is detachably attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911353386.3A CN110894047A (en) | 2019-12-24 | 2019-12-24 | Crawler crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911353386.3A CN110894047A (en) | 2019-12-24 | 2019-12-24 | Crawler crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110894047A true CN110894047A (en) | 2020-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911353386.3A Pending CN110894047A (en) | 2019-12-24 | 2019-12-24 | Crawler crane |
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| GB257435A (en) * | 1925-10-15 | 1926-09-02 | John Hutton | Self lubricating bushes for pulleys, trolleys, or like wheels |
| JP2002310141A (en) * | 2001-04-11 | 2002-10-23 | Yen Sun Technology Corp | Bearing device |
| CN201901545U (en) * | 2010-12-16 | 2011-07-20 | 上海三一科技有限公司 | Dual-branch folding-type lengthened beam for crawler crane chassis |
| CN104389907A (en) * | 2014-11-25 | 2015-03-04 | 英轩重工有限公司 | Abrasion-proof lining |
| CN104995416A (en) * | 2012-12-13 | 2015-10-21 | H.E.F.公司 | Guiding body in the form of a ring frictionally mounted by means of a movable joint and/or element sliding capacity |
| CN204958241U (en) * | 2015-09-25 | 2016-01-13 | 四川电力建设三公司 | Hinge pin slide bearing structure is connected to crane jib loading boom root |
| CN105984814A (en) * | 2015-02-06 | 2016-10-05 | 合肥神马科技集团有限公司 | Crane and engineering machinery chassis thereof |
| CN208778499U (en) * | 2018-08-16 | 2019-04-23 | 石家庄理想汽车零部件有限公司 | Axle sleeve |
| CN211226045U (en) * | 2019-12-24 | 2020-08-11 | 浙江三一装备有限公司 | Crawler crane |
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- 2019-12-24 CN CN201911353386.3A patent/CN110894047A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB257435A (en) * | 1925-10-15 | 1926-09-02 | John Hutton | Self lubricating bushes for pulleys, trolleys, or like wheels |
| JP2002310141A (en) * | 2001-04-11 | 2002-10-23 | Yen Sun Technology Corp | Bearing device |
| CN201901545U (en) * | 2010-12-16 | 2011-07-20 | 上海三一科技有限公司 | Dual-branch folding-type lengthened beam for crawler crane chassis |
| CN104995416A (en) * | 2012-12-13 | 2015-10-21 | H.E.F.公司 | Guiding body in the form of a ring frictionally mounted by means of a movable joint and/or element sliding capacity |
| CN104389907A (en) * | 2014-11-25 | 2015-03-04 | 英轩重工有限公司 | Abrasion-proof lining |
| CN105984814A (en) * | 2015-02-06 | 2016-10-05 | 合肥神马科技集团有限公司 | Crane and engineering machinery chassis thereof |
| CN204958241U (en) * | 2015-09-25 | 2016-01-13 | 四川电力建设三公司 | Hinge pin slide bearing structure is connected to crane jib loading boom root |
| CN208778499U (en) * | 2018-08-16 | 2019-04-23 | 石家庄理想汽车零部件有限公司 | Axle sleeve |
| CN211226045U (en) * | 2019-12-24 | 2020-08-11 | 浙江三一装备有限公司 | Crawler crane |
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