CN114408771A - Pulley positioning method and axial positioning mechanism - Google Patents
Pulley positioning method and axial positioning mechanism Download PDFInfo
- Publication number
- CN114408771A CN114408771A CN202210054354.9A CN202210054354A CN114408771A CN 114408771 A CN114408771 A CN 114408771A CN 202210054354 A CN202210054354 A CN 202210054354A CN 114408771 A CN114408771 A CN 114408771A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 description 7
- 230000013011 mating Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/703—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by flexible elements, e.g. cables, chains or bands
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
Abstract
The invention discloses a pulley positioning method, which comprises the steps of firstly, installing a pulley assembly into a gap between the side surface of an inner arm and the side surface of an outer arm, and aligning a bearing inner ring of the pulley assembly with a mounting hole of the outer arm; then the positioning shaft is inserted into the positioning hole of the pulley shaft, and the angle of the positioning shaft is adjusted to enable the positioning cap of the positioning shaft to be in a collection state; then inserting the pulley shaft provided with the positioning shaft into the mounting hole and the bearing inner ring of the pulley assembly; then the positioning shaft is rotated, the positioning cap is adjusted to be in an unfolded state so as to position the pulley assembly, and finally the pulley shaft and the positioning shaft are fixed. The positioning shaft is rotated outside the outer arm, so that the positioning cap can axially limit the pulley assembly, and the limiting part can circumferentially limit the positioning cap, thereby ensuring the positioning firmness and reducing the positioning difficulty. The invention also provides an axial positioning mechanism applied to the pulley positioning method and has the advantages.
Description
Technical Field
The invention relates to the technical field, in particular to a pulley positioning method. The invention also relates to an axial positioning mechanism applicable to the pulley positioning method.
Background
The existing aerial work platform or crane usually adopts a steel wire rope to drive the arm support to stretch, and an extended pulley is arranged on the side surface of the arm support. Because the side of the root of the inner arm is provided with the sliding block, the installation process needs to firstly install the inner arm into the outer arm, then install the pulley from the gap between the sides of the two sections of arms, and finally position the pulley. The operation space of the pulley positioning process is narrow, the positioning difficulty of the pulley is increased, and the firmness of the pulley positioning can be influenced.
Therefore, how to reduce the difficulty of axial positioning of the pulley is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a pulley positioning method which can realize the positioning of a pulley assembly by operating on the outer side of an outer arm, thereby reducing the positioning difficulty of the pulley assembly and improving the positioning firmness. Another object of the present invention is to provide an axial positioning mechanism applied to the pulley positioning method.
In order to achieve the above object, the present invention provides a pulley positioning method, including:
installing a pulley assembly into a gap between the side surface of the inner arm and the side surface of the outer arm, and aligning a bearing inner ring of the pulley assembly with a mounting hole of the outer arm;
inserting a positioning shaft into a positioning hole of a pulley shaft, wherein one end of the positioning shaft is provided with a positioning cap for positioning the pulley assembly, and the angle of the positioning shaft is adjusted to enable the positioning cap of the positioning shaft to be in a collection state;
inserting the pulley shaft with the positioning shaft installed into the installation hole and a bearing inner ring of the pulley assembly;
rotating the positioning shaft to adjust the positioning cap to an unfolded state so as to position the pulley assembly, wherein a limiting part is arranged on the end face of one end of the pulley shaft, which is positioned in the gap, and the limiting part is used for circumferentially limiting the positioning cap when the positioning cap is in the unfolded state;
and fixing the pulley shaft and the positioning shaft.
Preferably, the limiting part is the limiting groove with an opening on the side surface, the positioning hole is positioned at the bottom of the limiting groove, and a preset distance is reserved between the axis of the positioning hole and the axis of the pulley shaft;
when the positioning cap is in a storage state, the projection of the positioning cap on the matching surface is completely positioned in the projection range of the pulley shaft on the matching surface, and the matching surface is a plane where the end face of one end of the pulley shaft, which is positioned in the gap, is positioned.
Preferably, the positioning cap comprises two arc side edges, one of which is a positioning edge and the other of which is a limiting edge, and the distance between the positioning edge and the positioning axis is greater than the distance between the limiting edge and the positioning axis;
when the positioning cap is in an unfolded state, the projection of the positioning edge on the matching surface is positioned outside the projection range of the pulley shaft on the plane.
Preferably, a bottom plate is arranged at one end of the pulley shaft, which is positioned outside the gap;
the fixing the pulley shaft and the positioning shaft includes:
and fixedly connecting the bottom plate with the outer arm through a fixing bolt.
Preferably, a bottom plate is arranged at one end of the pulley shaft, which is positioned outside the gap;
the fixing the pulley shaft and the positioning shaft includes:
and fixedly connecting the bottom plate with the outer arm through a fixing bolt.
Preferably, one end of the positioning shaft, which is far away from the positioning cap, is provided with an external thread;
the fixing the pulley shaft and the positioning shaft further comprises:
and fixing the positioning shaft through a positioning nut, so that the positioning cap is attached to the bearing inner ring of the pulley assembly.
Preferably, one end of the positioning shaft, which is far away from the positioning cap, is provided with an indication part for indicating the position of the positioning cap.
Preferably, the position indicating part is a position indicating protrusion extending in a direction away from the positioning cap, the cross section of the position indicating protrusion is semicircular, and the position indicating protrusion corresponds to the position of the positioning cap;
the rotating the positioning shaft to adjust the positioning cap to a deployed state to position the pulley assembly includes:
and rotating the positioning shaft by 180 degrees, and pulling the positioning shaft along the axial direction of the positioning shaft to enable the positioning cap to enter the limiting groove.
The invention also provides an axial positioning mechanism which is applied to any one of the pulley positioning methods and comprises a pulley shaft and a positioning shaft, wherein the pulley shaft is provided with a positioning hole extending along the axial direction, the positioning shaft is arranged in the positioning hole, one end of the positioning shaft, which is positioned at the inner side of the outer arm, is provided with a positioning cap for axially positioning the pulley assembly, the end surface of one end of the pulley shaft, which is positioned at the inner side of the outer arm, is provided with a limiting part for circumferentially positioning the positioning cap, and one end of the positioning shaft, which is positioned at the outer side of the outer arm, is fixed through the positioning part.
The pulley positioning method provided by the invention comprises the following steps that firstly, a pulley assembly is arranged in a gap between the side surface of an inner arm and the side surface of an outer arm, so that a bearing inner ring of the pulley assembly is aligned with a mounting hole of the outer arm; then inserting the positioning shaft into the positioning hole of the pulley shaft, wherein one end of the positioning shaft is provided with a positioning cap for positioning the pulley assembly, and adjusting the angle of the positioning shaft to enable the positioning cap of the positioning shaft to be in a collection state; then inserting the pulley shaft provided with the positioning shaft into the mounting hole and the bearing inner ring of the pulley assembly; then, rotating the positioning shaft, adjusting the positioning cap to be in an unfolded state, and positioning the pulley assembly, wherein the end face of one end of the pulley shaft, which is positioned in the gap, is provided with a limiting part, and the limiting part is used for carrying out circumferential limiting on the positioning cap when the positioning cap is in the unfolded state; and finally, fixing the pulley shaft and the positioning shaft.
The pulley location process can operate the completion in the outer wall outside, and it is spacing to rotate the location axle and can make the position cap carry out the axial to the pulley assembly, and spacing portion can carry out circumference spacing to the position cap simultaneously, guarantees the fastness of location, has reduced the location degree of difficulty.
The invention also provides an axial positioning mechanism applied to the pulley positioning method and has the advantages.
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, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a sheave positioning method provided by the present invention;
FIG. 2 is a schematic view of the inside stowed position of the axial positioning mechanism provided by the present invention;
FIG. 3 is a schematic structural view of the axial positioning mechanism of FIG. 2 in an expanded state inside the axial positioning mechanism;
FIG. 4 is a schematic structural view of the axial positioning mechanism of FIG. 2 in an outboard stowed position;
FIG. 5 is a schematic structural view of the axial positioning mechanism of FIG. 2 in an expanded state outboard thereof;
FIG. 6 is a schematic view of the construction of the pulley shaft of FIG. 2;
FIG. 7 is a schematic view of the positioning shaft of FIG. 2;
FIG. 8 is a schematic structural view of a pulley assembly;
FIG. 9 is a cross-sectional view of the axial positioning mechanism of FIG. 2 in a stowed position;
FIG. 10 is a cross-sectional view of the axial positioning mechanism of FIG. 2 in an expanded state;
FIG. 11 is a schematic view of the telescopic arm without the axial positioning mechanism;
fig. 12 is a schematic view of the telescopic arm with the axial positioning mechanism mounted thereon.
Wherein the reference numerals in fig. 1 to 12 are:
the pulley assembly comprises a fixing bolt 1, a pulley shaft 2, a positioning nut 3, a positioning shaft 4, a pulley assembly 5, an outer arm 6, an inner arm 7, a positioning hole 21, a limiting groove 22, a bottom plate 23, a positioning cap 41, a position indication bulge 42, a mounting hole 61, a positioning edge 411 and a limiting edge 412.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Please refer to fig. 1 to 12.
The pulley positioning method provided by the invention comprises the following steps:
s1, installing the pulley assembly 5 into the gap between the side surface of the inner arm 7 and the side surface of the outer arm 6, and aligning the inner bearing ring of the pulley assembly 5 with the mounting hole 61 of the outer arm 6;
as shown in fig. 11, the inner arm 7 is inserted into the outer arm 6 with a gap therebetween, and the pulley assembly 5 is installed in the gap.
S2, inserting the positioning shaft 4 into the positioning hole 21 of the pulley shaft 2, arranging a positioning cap 41 for positioning the pulley assembly 5 at one end of the positioning shaft 4, and adjusting the angle of the positioning shaft 4 to enable the positioning cap 41 of the positioning shaft 4 to be in a collection state;
optionally, the positioning hole 21 is an eccentric structure in the pulley shaft 2, that is, a preset distance is formed between the axis of the positioning hole 21 and the axis of the pulley shaft 2, and the preset distance is smaller than a radius difference between the pulley shaft 2 and the positioning hole 21. The positioning cap 41 is in a storage state when rotated to the side of the positioning hole 21 close to the axis of the pulley shaft 2.
When the positioning cap 41 is in the storage state, the projection of the positioning cap 41 on the matching surface is completely located in the projection range of the pulley shaft 2 on the matching surface, and the matching surface is a plane where the end surface of the pulley shaft 2 located at one end in the gap is located.
The outer circumference of the locking cap 41 does not exceed the outer circumference of the pulley shaft 2, thereby facilitating the installation of the pulley shaft 2 into the mounting hole 61.
S3, inserting the pulley shaft 2 with the positioning shaft 4 installed into the installation hole 61 and the bearing inner ring of the pulley assembly 5;
the pulley shaft 2 to which the positioning shaft 4 is attached is constructed as shown in fig. 2, and the pulley shaft 2 is inserted into the attachment hole 61 and the bearing inner race. At this time, the pulley assembly 5 can rotate around the pulley shaft 2, but the pulley assembly 5 is not axially limited by the axial positioning mechanism, and the pulley assembly 5 can still move to the inner arm 7 side as shown in fig. 9.
S4, rotating the positioning shaft 4, adjusting the positioning cap 41 to the unfolding state to position the pulley assembly 5, wherein the end face of one end of the pulley shaft 2, which is positioned in the gap, is provided with a limiting part, and the limiting part is used for circumferentially limiting the positioning cap 41 when the positioning cap 41 is in the unfolding state;
the positioning cap 41 can be adjusted to the deployed state by rotating the positioning shaft 4. In the deployed state, the projection of one side of the positioning cap 41 on the mating face is located outside the projection range of the pulley shaft 2 on the plane. As shown in fig. 3 and 10, the positioning cap 41 is located on the side of the pulley assembly 5 away from the outer arm 6 and limits the inner race of the bearing of the pulley assembly 5.
Optionally, the limiting part is a limiting groove 22 with an opening on a side surface, and the positioning hole 21 is located at the bottom of the limiting groove 22. The positioning cap 41 comprises two arc side edges, one of which is a positioning edge 411 and the other is a limiting edge 412, and the distance between the positioning edge 411 and the axis of the positioning shaft 4 is greater than the distance between the limiting edge 412 and the axis of the positioning shaft 4. The radian of the side wall of the limiting groove 22 is equal to the radian of the limiting edge 412, and the distance between the side wall of the limiting groove 22 and the axis of the positioning hole 21 is equal to the distance between the limiting edge 412 and the axis of the positioning shaft 4. Therefore, when the positioning cap 41 rotates to a position corresponding to the position of the limiting groove 22, the positioning cap 41 can enter the limiting groove 22, and the side wall of the limiting groove 22 can limit the positioning cap 41 through the limiting edge 412, so that the positioning cap 41 is prevented from rotating.
Optionally, an indication portion for indicating the position of the positioning cap 41 is provided at an end of the positioning shaft 4 away from the positioning cap 41, and an assembler can determine the position of the positioning cap 41 through the indication portion.
Optionally, the positioning portion is a positioning protrusion 42 extending away from the positioning cap 41, as shown in fig. 4 and 5, the cross section of the positioning protrusion 42 is semicircular, and the positioning protrusion 42 corresponds to the positioning cap 41. In the process of positioning the pulley assembly 5, the positioning shaft 4 is rotated by 180 degrees, and then the positioning shaft 4 is pulled along the axial direction of the positioning shaft 4, so that the positioning cap 41 enters the limiting groove 22, the positioning of the pulley assembly 5 is realized, and meanwhile, the limiting groove 22 limits the positioning cap 41.
S5, a fixed pulley shaft 2 and a positioning shaft 4.
Optionally, a bottom plate 23 is disposed at an end of the pulley shaft 2 located outside the gap, the bottom plate 23 has a fixing hole penetrating in the thickness direction, and the outer arm 6 has a threaded hole located at the periphery of the mounting hole 61. When the pulley shaft 2 is fixed, the fixing bolt 1 passes through the fixing hole to be connected with the threaded hole. Of course, the user may also fixedly connect the bottom plate 23 and the outer arm 6 by welding or the like according to the requirement, which is not limited herein.
Optionally, the end of the positioning shaft 4 remote from the positioning cap 41 is provided with an external thread. After rotating to the unfolding state, the external thread of the positioning shaft 4 extends out of the gap between the outer arm 6 and the inner arm 7. The assembly personnel link to each other set nut 3 and location axle 4, and the bolt pretightning force is towards the clearance outside along the axial of location axle 4. The bolt pretightening force enables the positioning cap 41 to be tightly attached to the bearing inner ring of the pulley assembly 5.
In this embodiment, the pulley positioning method only needs to operate outside the outer arm 6, the pulley shaft 2 is connected with the bearing inner ring of the pulley assembly 5, then the pulley assembly 5 is axially positioned by rotating the positioning shaft 4, and finally the pulley shaft 2 and the positioning shaft 4 are fixed to complete the positioning of the pulley assembly 5. Operation process is simple, and the location degree of difficulty is low, can guarantee the fastness of 5 location of pulley assembly simultaneously.
The axial positioning mechanism provided by the invention is structurally shown in fig. 1 to 4 and comprises a pulley shaft 2 and a positioning shaft 4. One end of the pulley shaft 2 is provided with a bottom plate 23, the outer arm is provided with a mounting hole, the pulley shaft 2 is inserted into the mounting hole, and the bottom plate 23 is attached to the outer side of the outer arm and is connected with the outer arm through a fixing bolt 1. The pulley assembly 5 includes a bearing installed at the outer circumference of the pulley shaft 2. The pulley shaft 2 has a positioning hole 21 extending axially therein, and the positioning shaft 4 is fitted in the positioning hole 21.
The end of the positioning shaft 4, which is positioned at the inner side of the outer arm, is provided with a positioning cap 41. The plane of the end surface of the pulley shaft 2 at one end of the inner side of the outer wall is a matching surface, and the position of the positioning cap 41 can be adjusted by rotating the positioning shaft 4, so that the positioning cap 41 can be switched between the unfolding state and the collection state. The positioning cap 41 is positioned on one side of the pulley assembly 5 far away from the bottom plate 23, when the positioning cap 41 is in a collection state, the projection of the positioning cap 41 on the matching surface is completely positioned in the projection range of the pulley shaft 2 on the matching surface, and at the moment, the pulley shaft 2 can drive the positioning cap 41 to be inserted into the mounting hole and connected with the pulley assembly 5; when the positioning cap 41 is in the deployed state, a projection of a portion of the positioning cap 41 on the mating surface, which is located outside a projection of the pulley shaft 2 on the mating surface, can axially position the pulley assembly 5. The end face of the pulley shaft 2, which is located at one end of the inner side of the outer arm, is provided with a limiting part, and the limiting part can circumferentially position the positioning cap 41, so that the positioning cap 41 is always in an unfolded state when the pulley rotates. In addition, one end of the positioning shaft 4 located outside the outer arm is connected to a positioning portion, and the positioning portion fixes the positioning shaft 4.
Optionally, the limiting part is a limiting groove 22 with an opening on a side surface, and the positioning hole 21 is located at the bottom of the limiting groove 22. As shown in fig. 5, the top and upper sides of the stopper groove 22 are opened. When the positioning cap 41 is positioned in the limiting groove 22, the positioning cap is in an unfolded state; the positioning cap 41 is located outside the limiting groove 22 when in a storage state, the positioning cap 41 is attached to the end face of the pulley shaft 2, and the end face of the pulley shaft 2 supports the positioning cap 41 to ensure that the positioning cap cannot enter the limiting groove 22. In the process of switching from the storage state to the expansion state, the positioning cap 41 enters the limiting groove 22 from the top and extends out from the side opening to position the pulley assembly 5. The side wall of the limiting groove 22 can limit the positioning cap 41 to prevent the positioning cap from rotating. Of course, the limiting portion may also adopt a structure such as a limiting protrusion, and is not limited herein.
Optionally, the positioning cap 41 includes two arc sides, and a central angle corresponding to each arc side is less than 180 °, so that the positioning cap 41 forms a structure similar to a leaf shape. One arc side edge of the positioning cap 41 is a positioning edge 411, and the other arc side edge is a limiting edge 412. The distance between the positioning edge 411 and the axis of the positioning shaft 4 is greater than the distance between the limiting edge 412 and the axis of the positioning shaft 4, and when the positioning cap 41 is in the unfolded state, the positioning edge 411 is positioned outside the limiting groove 22 to position the pulley assembly 5. In addition, the side walls of the retaining groove 22 are also arranged along an arc, which has the same shape as the retaining edge 412. The distance between the side wall of the limiting groove 22 and the axis of the positioning hole 21 is equal to the distance between the limiting edge 412 and the axis of the positioning shaft 4, and is smaller than the curvature radius of the limiting edge 412, so that the side wall of the limiting groove 22 can limit the positioning cap 41. Of course, the user may also set the positioning cap 41 and the limiting groove 22 to other shapes according to the requirement, and is not limited herein.
Optionally, the positioning hole 21 is an eccentric structure in the pulley shaft 2, that is, a preset distance is formed between the axis of the positioning hole 21 and the axis of the pulley shaft 2, and the preset distance is smaller than a radius difference between the pulley shaft 2 and the positioning hole 21.
Optionally, the positioning portion is a positioning nut 3, an external thread is arranged at one end of the positioning shaft 4 far away from the positioning cap 41, and the positioning nut 3 is connected with the positioning shaft 4 through a thread. Of course, the user may also use a fixing clip or a fixing pin to axially position the positioning shaft 4.
Optionally, one end of the positioning shaft 4 located outside the outer arm is provided with a position indicating part, and the position indicating part can indicate the position of the positioning cap 41. The assembly personnel can determine whether the positioning cap 41 can enter the limiting groove 22 or not through the position of the indicating part.
Optionally, the positioning portion is a positioning protrusion 42 extending away from the positioning cap 41, and the cross section of the positioning protrusion 42 is semicircular. The positioning edge 411 of the positioning cap 41 is located in a sector area centered on a point on the axis of the positioning shaft 4, and the sector area is located in the same direction as the semicircle of the positioning protrusion 42. Therefore, the assembling personnel can determine the angle of the positioning cap 41 according to the angle of the position indicating protrusion 42.
In addition, when the positioning cap 41 is in the storage state, the height of the positioning projection 42 is low. The operator continues to rotate the positioning shaft 4 until the positioning cap 41 enters the positioning slot. Meanwhile, the position-indicating protrusion 42 will also extend to the outside of the bottom plate 23, and the position-indicating protrusion 42 can extend out of the positioning nut 3. The assembling personnel can also judge whether the axial positioning mechanism completes positioning according to the height of the position indicating bulge 42.
In this embodiment, the axial positioning mechanism is provided with a positioning shaft 4 in the pulley shaft 2, and the positioning cap 41 on the positioning shaft 4 is matched with the limiting groove 22 on the pulley shaft 2 to axially position the pulley assembly 5. Meanwhile, in the positioning process, only an assembler needs to rotate the positioning shaft 4 on the outer side of the outer arm to enable the positioning cap 41 to enter the limiting groove 22, and finally the positioning nut 3 is installed from the outer side to fix the positioning shaft 4. The whole positioning process is carried out at the outer side of the outer arm, so that the operation difficulty is reduced, and the positioning reliability is improved.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The pulley positioning method and the axial positioning mechanism provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A method of positioning a sheave, comprising:
installing a pulley assembly (5) into a gap between the side surface of an inner arm (7) and the side surface of an outer arm (6) so that the inner ring of a bearing of the pulley assembly (5) is aligned with a mounting hole (61) of the outer arm (6);
inserting a positioning shaft (4) into a positioning hole (21) of a pulley shaft (2), wherein one end of the positioning shaft (4) is provided with a positioning cap (41) for positioning the pulley assembly (5), and adjusting the angle of the positioning shaft (4) to enable the positioning cap (41) of the positioning shaft (4) to be in a collection state;
inserting the pulley shaft (2) with the positioning shaft (4) installed into the installation hole (61) and a bearing inner ring of the pulley assembly (5);
the positioning shaft (4) is rotated, the positioning cap (41) is adjusted to be in an unfolded state to position the pulley assembly (5), the end face of one end, located in the gap, of the pulley shaft (2) is provided with a limiting part, and the limiting part is used for limiting the positioning cap (41) in the circumferential direction when the positioning cap (41) is in the unfolded state;
and fixing the pulley shaft (2) and the positioning shaft (4).
2. The pulley positioning method according to claim 1, wherein the position limiting part is a position limiting groove (22) with a side opening, the positioning hole (21) is positioned at the bottom of the position limiting groove (22), and the axis of the positioning hole (21) is a preset distance away from the axis of the pulley shaft (2);
when the positioning cap (41) is in a storage state, the projection of the positioning cap (41) on the matching surface is completely positioned in the projection range of the pulley shaft (2) on the matching surface, and the matching surface is a plane where the end face of one end of the pulley shaft (2) positioned in the gap is positioned.
3. The pulley positioning method according to claim 2, characterized in that the positioning cap (41) comprises two arc-shaped side edges, one of which is a positioning edge (411) and the other is a limiting edge (412), and the distance between the positioning edge (411) and the axis of the positioning shaft (4) is greater than the distance between the limiting edge (412) and the axis of the positioning shaft (4);
when the positioning cap (41) is in an unfolded state, the projection of the positioning edge (411) on the matching surface is positioned outside the projection range of the pulley shaft (2) on the plane.
4. The pulley positioning method according to claim 1, characterized in that a bottom plate (23) is provided at one end of the pulley shaft (2) located outside the gap;
the fixed pulley shaft (2) and the positioning shaft (4) comprise:
and the bottom plate (23) is fixedly connected with the outer arm (6) through a fixing bolt (1).
5. The pulley positioning method according to claim 4, characterized in that the pulley shaft (2) is provided with a bottom plate (23) at the end outside the gap;
the fixed pulley shaft (2) and the positioning shaft (4) comprise:
and the bottom plate (23) is fixedly connected with the outer arm (6) through a fixing bolt (1).
6. The pulley positioning method according to claim 5, characterized in that the end of the positioning shaft (4) far away from the positioning cap (41) is provided with an external thread;
the fixed pulley shaft (2) and the positioning shaft (4) further comprise:
the positioning shaft (4) is fixed through a positioning nut (3), so that the positioning cap (41) is attached to the inner ring of the bearing of the pulley assembly (5).
7. The pulley positioning method according to any one of claims 2 to 6, characterized in that an end of the positioning shaft (4) away from the positioning cap (41) is provided with a position indication portion for indicating the position of the positioning cap (41) (41).
8. The pulley positioning method according to claim 7, wherein the positioning part is a positioning protrusion (42) extending away from the positioning cap (41), the cross section of the positioning protrusion (42) is semicircular, and the positioning protrusion (42) corresponds to the positioning cap (41);
the rotating the positioning shaft (4) to adjust the positioning cap (41) to a deployed state to position the pulley assembly (5), comprising:
the positioning shaft (4) is rotated by 180 degrees, the positioning shaft (4) is pulled along the axial direction of the positioning shaft (4), and the positioning cap (41) enters the limiting groove (22).
9. An axial positioning mechanism is applied to the pulley positioning method according to any one of claims 1 to 8, and is characterized by comprising a pulley shaft (2) and a positioning shaft (4), wherein the pulley shaft (2) is provided with a positioning hole (21) extending along the axial direction, the positioning shaft (4) is installed in the positioning hole (21), one end, located on the inner side of an outer arm (6), of the positioning shaft (4) is provided with a positioning cap (41) for axially positioning a pulley assembly (5), the end face, located on the inner side of the outer arm (6), of the pulley shaft (2) is provided with a limiting portion for circumferentially limiting the positioning cap (41), and one end, located on the outer side of the outer arm (6), of the positioning shaft (4) is fixed through a positioning portion.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054354.9A CN114408771A (en) | 2022-01-18 | 2022-01-18 | Pulley positioning method and axial positioning mechanism |
| PCT/CN2022/102745 WO2023137986A1 (en) | 2022-01-18 | 2022-06-30 | Pulley positioning method and axial positioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054354.9A CN114408771A (en) | 2022-01-18 | 2022-01-18 | Pulley positioning method and axial positioning mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN114408771A true CN114408771A (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210054354.9A Pending CN114408771A (en) | 2022-01-18 | 2022-01-18 | Pulley positioning method and axial positioning mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN114408771A (en) |
| WO (1) | WO2023137986A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023137986A1 (en) * | 2022-01-18 | 2023-07-27 | 湖南星邦智能装备股份有限公司 | Pulley positioning method and axial positioning mechanism |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2768399B2 (en) * | 1994-06-17 | 1998-06-25 | 古河機械金属株式会社 | Sheave mounting structure for multi-stage telescopic boom |
| CN202643258U (en) * | 2012-05-25 | 2013-01-02 | 合肥神马科技集团有限公司 | Engineering mechanical telescopic arm and telescopic arm pulley mounting structure |
| CN103769834B (en) * | 2013-09-27 | 2017-06-06 | 宁波上中下自动变速器有限公司 | Multi-function rod fisher pulling claw bearing withdrawing device |
| EP3199834B1 (en) * | 2016-01-29 | 2018-11-07 | Aktiebolaget SKF | Pulley device for a belt, installation method of such a device and motor vehicle equipped with such a device |
| JP7086454B2 (en) * | 2017-10-19 | 2022-06-20 | 株式会社アイチコーポレーション | Telescopic boom |
| CN114408771A (en) * | 2022-01-18 | 2022-04-29 | 湖南星邦智能装备股份有限公司 | Pulley positioning method and axial positioning mechanism |
-
2022
- 2022-01-18 CN CN202210054354.9A patent/CN114408771A/en active Pending
- 2022-06-30 WO PCT/CN2022/102745 patent/WO2023137986A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023137986A1 (en) * | 2022-01-18 | 2023-07-27 | 湖南星邦智能装备股份有限公司 | Pulley positioning method and axial positioning mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023137986A1 (en) | 2023-07-27 |
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