CN211769938U - Pulley supporting seat, pulley block and crane boom - Google Patents
Pulley supporting seat, pulley block and crane boom Download PDFInfo
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- CN211769938U CN211769938U CN202020410942.8U CN202020410942U CN211769938U CN 211769938 U CN211769938 U CN 211769938U CN 202020410942 U CN202020410942 U CN 202020410942U CN 211769938 U CN211769938 U CN 211769938U
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Abstract
The utility model provides a pair of pulley supporting seat, assembly pulley and jib loading boom relates to hoisting equipment technical field to optimize to a certain extent and rise and become the mode that sets up of width of cloth assembly pulley, reduce the dismouting frequency of assembly pulley. The utility model provides a pulley supporting seat, which comprises a positioning lug plate component and a mounting lug plate component; the positioning lug plate assembly comprises a first positioning lug plate and a second positioning lug plate which are arranged opposite to each other, and the mounting lug plate assembly comprises a first mounting lug plate and a second mounting lug plate which are arranged opposite to each other; one end of the first mounting lug plate is rotatably connected with the first positioning lug plate, one end of the second mounting lug plate is rotatably connected with the second positioning lug plate, and a pulley is arranged between the other end of the first mounting lug plate and the other end of the second mounting lug plate.
Description
Technical Field
The utility model belongs to the technical field of the jacking equipment technique and specifically relates to a pulley supporting seat, assembly pulley and jib loading boom are related to.
Background
The tower crane boom is the most common hoisting equipment in the construction site, and is used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction. The tower crane boom comprises a tower body, a tower top, a crane boom, a balance arm, a hoisting mechanism, a luffing mechanism, a slewing mechanism and the like. In the existing tower crane, a hoisting mechanism and a luffing mechanism need to be disassembled in the transportation process, and repeated disassembly not only influences the service life of a pulley block, but also reduces the operation efficiency.
Therefore, it is desirable to provide a pulley support base, a pulley block and a boom to solve the problems of the prior art to some extent.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pulley supporting seat, assembly pulley and jib loading boom to optimize to a certain extent and rise and become the mode that sets up of width of cloth assembly pulley, reduce the dismouting frequency of assembly pulley.
The utility model provides a pulley supporting seat, which comprises a positioning lug plate component and a mounting lug plate component; the positioning ear plate assembly comprises a first positioning ear plate and a second positioning ear plate which are arranged opposite to each other, and the mounting ear plate assembly comprises a first mounting ear plate and a second mounting ear plate which are arranged opposite to each other; the one end of first installation otic placode with first location otic placode rotates to be connected, the one end of second installation otic placode with second location otic placode rotates to be connected, just the other end of first installation otic placode with be used for installing the pulley between the other end of second installation otic placode.
The first positioning lug plate and the second positioning lug plate are correspondingly provided with first connecting holes, and the first mounting lug plate and the second mounting lug plate are provided with second connecting holes corresponding to the first connecting holes; the first connecting hole and the second connecting hole are internally provided with a connecting shaft, and the connecting shaft enables the mounting lug plate assembly and the positioning lug plate assembly to be rotatably connected.
Specifically, the first positioning ear plate and the second positioning ear plate are also provided with mounting grooves; third connecting holes are formed in the first mounting lug plate and the second mounting lug plate corresponding to the mounting grooves, and first connecting pieces are arranged in the mounting grooves; the first connecting piece can penetrate through the mounting groove and the third connecting hole; or the first connecting piece can penetrate through the mounting groove and is abutted against or separated from the lower wall surfaces of the first mounting lug plate and the second mounting lug plate.
Furthermore, first clamping grooves are formed in two ends of the first connecting piece, first clamping pieces are arranged on the mutually opposite sides of the first positioning lug plate and the second positioning lug plate, and the first clamping pieces can be inserted into the first clamping grooves in the end portions of the first connecting piece to clamp the first connecting piece.
Furthermore, the mounting groove is L-shaped, one end of the mounting groove penetrates through the edges of the first positioning lug plate and the second positioning lug plate, and the first connecting piece can stretch into the other end of the mounting groove along the L-shaped mounting groove.
Furthermore, a fourth connecting hole is formed in one end, far away from the third connecting hole, of each of the first mounting lug plate and the second mounting lug plate, and a second connecting piece is arranged in each fourth connecting hole; second clamping grooves are formed in two ends of the second connecting piece, second clamping pieces are arranged on the opposite sides of the first mounting lug plate and the second mounting lug plate, and the second clamping pieces can be inserted into the second clamping grooves in the end portions of the second connecting piece to clamp the second connecting piece.
Furthermore, a pressing rope assembly is arranged between the first mounting lug plate and one end, far away from the positioning lug plate assembly, of the second mounting lug plate; the rope pressing assembly comprises two support arms and a rolling element erected between the two support arms, one support arm is connected with the first mounting lug plate, the other support arm is connected with the second mounting lug plate, and the rolling element is respectively connected with the other ends of the two support arms in a rotating mode.
Compared with the prior art, the utility model provides a pulley supporting seat has following advantage:
the utility model provides a pulley supporting seat, which comprises a positioning lug plate component and a mounting lug plate component; the positioning lug plate assembly comprises a first positioning lug plate and a second positioning lug plate which are arranged opposite to each other, and the mounting lug plate assembly comprises a first mounting lug plate and a second mounting lug plate which are arranged opposite to each other; one end of the first mounting lug plate is rotatably connected with the first positioning lug plate, one end of the second mounting lug plate is rotatably connected with the second positioning lug plate, and a pulley is arranged between the other end of the first mounting lug plate and the other end of the second mounting lug plate.
Therefore, the pulley can move along with the first mounting lug plate and the second mounting lug plate after being mounted by the fact that the first mounting lug plate and the second mounting lug plate are in one end rotating connection with the first positioning lug plate and the second positioning lug plate.
When the pulley needs to be transported or maintained, the first mounting lug plate and the second mounting lug plate rotate relative to the first positioning lug plate and the second positioning lug plate, so that the pulley is driven to move towards the direction far away from the working position, the pulley is enabled to be in three states of working, transporting and maintaining on the premise of not needing dismounting, the dismounting frequency of the pulley is reduced to a certain extent, and the service life of the operation efficiency and the pulley block is prolonged.
In addition, the utility model also provides a pulley block, which comprises a lifting pulley, an amplitude-changing pulley and two pulley supporting seats arranged in parallel; the lifting pulley is arranged on one pulley supporting seat, and the amplitude-variable pulley is arranged on the other pulley supporting seat.
The first mounting lug plate and the second mounting lug plate in the pulley supporting seat for mounting the amplitude-variable pulley are arranged in an arc shape; when the connecting axle runs through first connecting hole with the second connecting hole, first connecting piece run through the mounting groove with during the third connecting hole, first installation otic placode with the second installation otic placode is kept away from the one end of first location otic placode is less than the plane that first location otic placode belonged to.
The utility model also provides a crane boom, which comprises the pulley block and the maintenance platform; the maintenance platform is located on one side far away from the lifting pulley and the amplitude-variable pulley in the pulley block and is used for maintaining the pulley block.
In the technical scheme, the installation lug plate assembly can relatively position the lug plate assembly to rotate, so that the installation lug plate assembly can drive the pulley to be switched among three states of operation, transportation and maintenance, the problem that the pulley block needs to be disassembled when an operation mode is switched is solved, the disassembly frequency of the pulley block is reduced, and the operation efficiency and the service life of the pulley block are improved.
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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an exploded view of a pulley support seat according to an embodiment of the present invention;
fig. 2 is an exploded view of a pulley block according to an embodiment of the present invention;
fig. 3 is a schematic view of an overall structure of the pulley block provided in the embodiment of the present invention in an operating state;
fig. 4 is a schematic view of an overall structure of the pulley block in a transportation state according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a crane boom provided in an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at A;
fig. 7 is a schematic winding diagram of a first view angle of the boom according to an embodiment of the present invention.
In the figure: 1-a first positioning ear plate; 2-a second positioning lug plate; 3-a first mounting lug plate; 4-a second mounting lug; 5-a connecting shaft; 6-a first connection hole; 7-a second connection hole; 8-mounting grooves; 9-a third connection hole; 10-a first connector; 11-a first fastener; 12-a fourth connection hole; 13-a second connector; 14-a second fastener; 15-a support arm; 16-rolling elements; 17-a lifting pulley; 18-a luffing pulley; 19-maintenance platform; and 20-steel wire rope.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.
For ease of description, spatial relationship terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.
Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.
The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
Fig. 1 is an exploded view of a pulley support seat according to an embodiment of the present invention.
As shown in fig. 1, the utility model provides a pulley support seat, which comprises a positioning ear plate component and a mounting ear plate component; the positioning ear plate component comprises a first positioning ear plate 1 and a second positioning ear plate 2 which are arranged opposite to each other, and the mounting ear plate component comprises a first mounting ear plate 3 and a second mounting ear plate 4 which are arranged opposite to each other; one end of the first mounting lug plate 3 is rotatably connected with the first positioning lug plate 1, one end of the second mounting lug plate 4 is rotatably connected with the second positioning lug plate 2, and a pulley is arranged between the other end of the first mounting lug plate 3 and the other end of the second mounting lug plate 4.
Compared with the prior art, the utility model provides a pulley supporting seat has following advantage:
the utility model provides a pulley supporting seat rotates with first location otic placode 1 and second location otic placode 2 to be connected in one end through first installation otic placode 3 and second installation otic placode 4, makes the pulley can follow first installation otic placode 3 and second installation otic placode 4 and remove after the installation.
When needs transported or maintained the pulley, with first installation otic placode 3 and the relative first location otic placode 1 of second installation otic placode 4 and the rotation of second location otic placode 2 to drive the pulley and can remove to the direction of keeping away from the operating position, and then make the pulley under the prerequisite that need not the dismouting, realize three kinds of states of work, transportation and maintenance, reduced the dismouting frequency of pulley to a certain extent, improved the life of operating efficiency and assembly pulley.
As shown in fig. 1, a first positioning space is formed between the first positioning ear plate 1 and the second positioning ear plate 2, the first mounting ear plate 3 and the second mounting ear plate 4 are disposed in the first positioning space, and the first mounting ear plate 3 and the second mounting ear plate 4 are rotatably connected to the first positioning ear plate 1 and the second positioning ear plate 2 through a connecting shaft 5.
Preferably, connecting axle 5 in this application is the round pin axle, and both ends have all seted up the pinhole, beats into the split pin in the pinhole, carries on spacingly to the round pin axle.
During the use, will install in the otic placode subassembly first location space earlier, will sell the axle and pass first location otic placode 1, first installation otic placode 3, second installation otic placode 4 and second location otic placode 2 in proper order again, squeeze into the cotter pin in the pinhole of seting up at the round pin axle both ends at last, realize connecting the rotation of the spacing and installation otic placode subassembly and the location otic placode subassembly of round pin axle.
It should be added here that, since the mounting lug plate assembly in the present application requires the installation of the pulley, the installation of the end of the mounting lug plate assembly away from the installation end of the pulley in the first positioning space can protect the mounting lug plate assembly.
Specifically, as shown in fig. 1, a first connection hole 6 and an installation groove 8 are respectively and correspondingly formed on the first positioning ear plate 1 and the second positioning ear plate 2; the positions, corresponding to the first connecting hole 6, of the first mounting lug plate 3 and the second mounting lug plate 4 are provided with second connecting holes 7, and the connecting shaft 5 penetrates through the first connecting hole 6 and the second connecting holes 7 so that the first mounting lug plate 3 is rotatably connected with the first positioning lug plate 1; third connecting holes 9 are formed in the positions, corresponding to the mounting grooves 8, of the first mounting lug plate 3 and the second mounting lug plate 4, and first connecting pieces 10 are arranged in the mounting grooves 8; the first connecting piece 10 can pass through the mounting groove 8 and the third connecting hole 9; or the first connecting piece 10 passes through the mounting groove 8 and is abutted against or separated from the first mounting lug plate 3 and the bottom arm of the first mounting lug plate 3.
The utility model provides a rotate the connection with location otic placode subassembly and installation otic placode subassembly in one end through connecting axle 5 in this application, the rethread first connecting piece 10 realizes the switching of installation otic placode subassembly and location otic placode subassembly between operation state and transportation state.
When the pulley is in the operating condition, connecting axle 5 and first connecting piece 10 pass first location otic placode 1, first installation otic placode 3, second installation otic placode 4 and second location otic placode 2 respectively in proper order, and connecting axle 5 is located first connecting hole 6 and second connecting hole 7, and first connecting piece 10 is located mounting groove 8 and third connecting hole 9 to with installation otic placode subassembly and the relatively fixed setting of location otic placode subassembly, make the integrated device can carry out stable operation.
When the pulley needs to be changed into a transportation state from an operation state, firstly, the first connecting piece 10 is pulled out of the mounting groove 8 and the third connecting hole 9, then the mounting lug plate assembly rotates around the connecting shaft 5, then the first connecting piece 10 is driven into the mounting groove 8, and through the self gravity of the mounting lug plate assembly, the lower wall surface of the mounting lug plate assembly can abut against the first connecting piece 10 between the first mounting lug plate 3 and the second mounting lug plate 4, so that the mounting lug plate assembly is in a supporting state, and the pulley is switched from the operation state to the transportation state.
When the pulley needs to be switched from the transportation state to the maintenance state, the mounting lug plate assembly is rotated to the position far away from the operation state again, and therefore the pulley is changed from the transportation state to the maintenance state.
Further, as shown in fig. 1, first clamping grooves are formed at two ends of the first connecting member 10, first clamping members 11 are respectively disposed on opposite sides of the first positioning ear plate 1 and the second positioning ear plate 2, and the first clamping members 11 can be inserted into the first clamping grooves at two ends of the first connecting member 10 to clamp the first connecting member 10.
Preferably, in this application, first connecting piece 10 is the round pin axle, and first card firmware 11 is the cardboard, and after the round pin axle passed mounting groove 8 and third connecting hole 9, the cardboard inserted the first draw-in groove that the round pin axle both ends were seted up to it is spacing to carry out first connecting piece 10.
It should be added here that, in the present application, the first clamping member 11 is detachably connected to the first positioning ear plate 1 and the second positioning ear plate 2 through a fastener such as a bolt, so as to realize the detachable connection between the first clamping member 11 and the first connecting member 10.
Further, as shown in fig. 1, the mounting groove 8 is L-shaped, one end of the mounting groove penetrates through the edges of the first positioning ear plate 1 and the second positioning ear plate 2, and the first connecting element 10 is disposed at the other end of the mounting groove 8.
Because the pulley supporting seats in the application are preferably two groups and are arranged in parallel, one pulley supporting seat is used for mounting the lifting pulley 17, and the other pulley supporting seat is used for mounting the amplitude-variable pulley 18. Therefore, in order to reduce the rope outlet angle of the luffing pulley 18 as much as possible, the distance between the two pulley support seats needs to be reduced as much as possible.
And connecting axle 5 or first connecting piece 10 in this application need the dismouting space, consequently, this application is through setting up mounting groove 8 into L shape, when the dismantlement of first locating piece is carried out to the transport state, with first card firmware 11 dismantlement back earlier, can directly take out first connecting piece 10 through mounting groove 8 of L shape to operating efficiency has been improved.
It should be added here that the width of the L-shaped mounting groove 8 in the present application is greater than the diameter of the first positioning member, so that the difficulty of detaching the first connecting member 10 can be reduced to some extent, and the detaching of the first connecting member 10 in the operating state is further simplified and faster.
Further, as shown in fig. 1, a fourth connecting hole 12 is formed at one end of the first mounting lug plate 3 and the second mounting lug plate 4 away from the third connecting hole 9, and a second connecting member 13 is arranged in the fourth connecting hole 12; second clamping grooves are formed in two ends of the second connecting piece 13, a second clamping piece 14 is arranged on one side, away from the second mounting ear plate 4, of the first mounting ear plate 3, and the second clamping piece 14 can be inserted into the second clamping grooves to clamp and fix the second connecting piece 13.
During the use, the pulley is installed between first installation otic placode 3 and second installation otic placode 4, and the shaft hole of pulley and fourth connecting hole 12 align, make the pulley be connected with first installation otic placode 3 and second installation otic placode 4 through second connecting piece 13.
Preferably, second connecting piece 13 in this application is the round pin axle, and has seted up the second draw-in groove at both ends, after round pin axle passed first installation otic placode 3, pulley and second installation otic placode 4 in proper order, inserts in the second draw-in groove through second card firmware 14, realizes the card of second connecting piece 13 and the erection joint of pulley and installation otic placode subassembly.
Furthermore, as shown in fig. 1, a pressing rope assembly is arranged between the ends of the first mounting ear plate 3 and the second mounting ear plate 4 away from the positioning ear plate assembly; the rope pressing assembly comprises two support arms 15 and a rolling element 16 erected between the two support arms 15, one ends of the two support arms 15 are respectively connected with the first mounting lug plate 3 and the second mounting lug plate 4, and the rolling element 16 is located at the other end of each support arm 15 and is rotatably connected with the support arm 15.
The wire rope 20 can be limited in the space formed by the support arm 15, the rolling element 16 and the pulley by the rope pressing component, thereby improving the stability during operation. The rolling part 16 is rotatably connected with the support arm 15, so that the friction force between the steel wire rope 20 and the rolling part 16 can be reduced, and the energy loss of the steel wire rope 20 in the operation process is reduced.
In this application, it is preferable that the rolling member 16 is a pin shaft, and both ends of the pin shaft are provided with pin holes, and a split pin is driven into the pin holes, so that the pin shaft can be stably connected with the two arms 15 in a rotating manner. And, through round pin axle and split pin, when needs dismantle the pulley, extract the split pin, the round pin axle separates with two arms 15 to can convenient and fast dismantle operations such as maintenance to the pulley.
It should be noted that, in order to ensure that the rolling members 16 roll smoothly, the aperture of the openings on the two arms 15 is larger than the diameter of the rolling members 16.
Fig. 2 is an exploded view of a pulley block according to an embodiment of the present invention; fig. 3 is a schematic view of an overall structure of the pulley block in an operating state according to an embodiment of the present invention; fig. 4 is a schematic view of an overall structure of the pulley block in a transportation state according to an embodiment of the present invention.
In addition, as shown in fig. 2-4, the utility model also provides a pulley block, which comprises a lifting pulley 17, an amplitude-changing pulley 18 and two pulley supporting seats arranged in parallel; the lifting pulley 17 is mounted on one of the pulley support bases, and the amplitude-variable pulley 18 is mounted on the other pulley support base.
Preferably, the pulley supporting seats are arranged in two groups in parallel, wherein one pulley supporting seat is provided with a lifting pulley 17, and the other pulley supporting seat is provided with a variable amplitude pulley 18. In addition, in the present application, preferably, the first positioning lug plate 1 and the second positioning lug plate 2 in the pulley support seat provided with the variable amplitude pulley 18 are provided with L-shaped mounting grooves 8, but the first positioning lug plate 1 and the second positioning lug plate 2 in the pulley support seat provided with the lifting pulley 17 may also be provided with L-shaped mounting grooves 8.
It should be noted that in the present application, the pulley support base on which the hoisting pulley 17 is provided is located in the center region in the boom width direction, and the pulley support base on which the luffing pulley 18 is provided is located on the side of the pulley support base on which the hoisting pulley 17 is provided.
As shown in fig. 2-4, the first mounting lug plate 3 and the second mounting lug plate 4 in the pulley support seat for mounting the amplitude pulley 18 are arranged in an arc shape; when the connecting shaft 5 penetrates through the first connecting hole 6 and the second connecting hole 7, and the first connecting piece 10 penetrates through the mounting groove 8 and the third connecting hole 9, the ends of the first mounting lug plate 3 and the second mounting lug plate 4, which are far away from the first positioning lug plate 1, are lower than the plane of the first positioning lug plate 1.
When the connecting shaft 5 penetrates through the first connecting hole 6 and the second connecting hole 7, and the first connecting piece 10 penetrates through the mounting groove 8 and the third connecting hole 9, the pulley block is in an operating state. This application is the arc setting through first installation otic placode 3 and the second installation otic placode 4 in the pulley supporting seat that will set up variable width pulley 18, can make the shaft hole that becomes variable width pulley 18 stagger with the shaft hole that rises to rise pulley 17 to can avoid appearing the problem of changing the width of cloth pulley 18 and rising to influence each other between the pulley 17 when the dismouting.
Fig. 5 is a schematic structural diagram of a crane boom provided in an embodiment of the present invention; FIG. 6 is an enlarged view of a portion of FIG. 5 at A; fig. 7 is a schematic winding diagram of a first view angle of the boom according to an embodiment of the present invention.
As shown in fig. 5-7, the present invention further provides a crane boom, which comprises the pulley block and the maintenance platform 19; the maintenance platform 19 is positioned at one side far away from the lifting pulley 17 and the amplitude pulley 18 in the pulley block and is used for maintaining the pulley block.
When the pulley block needs to be maintained, the mounting lug plate assembly rotates around the connecting shaft 5 and is turned over to the maintenance platform 19, and the pulley block is maintained.
It should be added that, after the hoisting pulley 17 and the luffing pulley 18 are installed, the lower tangent line of the two pulleys is lower than the lower bottom surface of the boom, so that after the steel wire rope 20 is arranged on the pulleys, the steel wire rope 20 can operate in a space lower than the lower bottom surface of the boom, thereby avoiding the problem that the support on the boom interferes with the steel wire rope 20 in the operation process, and improving the safety and stability of the device.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pulley supporting seat is characterized by comprising a positioning lug plate component and a mounting lug plate component;
the positioning ear plate assembly comprises a first positioning ear plate and a second positioning ear plate which are arranged opposite to each other, and the mounting ear plate assembly comprises a first mounting ear plate and a second mounting ear plate which are arranged opposite to each other;
the one end of first installation otic placode with first location otic placode rotates to be connected, the one end of second installation otic placode with second location otic placode rotates to be connected, just the other end of first installation otic placode with be used for installing the pulley between the other end of second installation otic placode.
2. The pulley support seat according to claim 1, wherein the first positioning lug and the second positioning lug are correspondingly provided with first connecting holes, and the first mounting lug and the second mounting lug are correspondingly provided with second connecting holes;
the first connecting hole and the second connecting hole are internally provided with a connecting shaft, and the connecting shaft enables the mounting lug plate assembly and the positioning lug plate assembly to be rotatably connected.
3. The pulley support seat according to claim 2, wherein the first positioning lug plate and the second positioning lug plate are further provided with mounting grooves;
third connecting holes are formed in the first mounting lug plate and the second mounting lug plate corresponding to the mounting grooves, and first connecting pieces are arranged in the mounting grooves;
the first connecting piece can penetrate through the mounting groove and the third connecting hole; or
The first connecting piece can penetrate through the mounting groove and is abutted against or separated from the lower wall surfaces of the first mounting lug plate and the second mounting lug plate.
4. The pulley support seat according to claim 3, wherein first engaging grooves are formed at two ends of the first connecting member, and first engaging members are disposed on opposite sides of the first positioning lug plate and the second positioning lug plate, and the first engaging members can be inserted into the first engaging grooves at the end of the first connecting member to engage the first connecting member.
5. The pulley support base of claim 3, wherein the mounting groove is L-shaped, and one end of the mounting groove penetrates the edges of the first and second positioning lugs, and the first connecting member can extend into the other end of the mounting groove along the L-shaped mounting groove.
6. The pulley support seat according to claim 3, wherein a fourth connecting hole is formed at one end of each of the first mounting lug plate and the second mounting lug plate away from the third connecting hole, and a second connecting member is arranged in the fourth connecting hole;
second clamping grooves are formed in two ends of the second connecting piece, second clamping pieces are arranged on the opposite sides of the first mounting lug plate and the second mounting lug plate, and the second clamping pieces can be inserted into the second clamping grooves in the end portions of the second connecting piece to clamp the second connecting piece.
7. The pulley support base of claim 6, wherein a cable pressing assembly is disposed between the ends of the first and second mounting lugs remote from the positioning lug assembly;
the rope pressing assembly comprises two support arms and a rolling element erected between the two support arms, one support arm is connected with the first mounting lug plate, the other support arm is connected with the second mounting lug plate, and the rolling element is respectively connected with the other ends of the two support arms in a rotating mode.
8. A pulley block, characterized by comprising a lifting pulley, a luffing pulley and two pulley supporting seats according to any one of claims 3 to 7 arranged side by side;
the lifting pulley is arranged on one pulley supporting seat, and the amplitude-variable pulley is arranged on the other pulley supporting seat.
9. The pulley block of claim 8, wherein said first and second mounting lugs in said pulley support block for mounting said luffing pulley are arcuately disposed;
when the connecting axle runs through first connecting hole with the second connecting hole, first connecting piece run through the mounting groove with during the third connecting hole, first installation otic placode with the second installation otic placode is kept away from the one end of first location otic placode is less than the plane that first location otic placode belonged to.
10. A crane boom comprising the block and tackle assembly of claim 9 and a service platform;
the maintenance platform is located on one side far away from the lifting pulley and the amplitude-variable pulley in the pulley block and is used for maintaining the pulley block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020410942.8U CN211769938U (en) | 2020-03-26 | 2020-03-26 | Pulley supporting seat, pulley block and crane boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020410942.8U CN211769938U (en) | 2020-03-26 | 2020-03-26 | Pulley supporting seat, pulley block and crane boom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112919342A (en) * | 2021-02-26 | 2021-06-08 | 徐州建机工程机械有限公司 | Novel foldable auxiliary arm structure and automobile crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112919342A (en) * | 2021-02-26 | 2021-06-08 | 徐州建机工程机械有限公司 | Novel foldable auxiliary arm structure and automobile crane |
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