CN109516389B - Self-adaptive sliding block - Google Patents
Self-adaptive sliding block Download PDFInfo
- Publication number
- CN109516389B CN109516389B CN201811499134.7A CN201811499134A CN109516389B CN 109516389 B CN109516389 B CN 109516389B CN 201811499134 A CN201811499134 A CN 201811499134A CN 109516389 B CN109516389 B CN 109516389B
- Authority
- CN
- China
- Prior art keywords
- sliding block
- arm
- universal joint
- slider
- spherical universal
- 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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Links
- 238000005461 lubrication Methods 0.000 claims description 16
- 239000004519 grease Substances 0.000 claims description 5
- 210000002445 nipple Anatomy 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
Classifications
-
- 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
- B66C23/66—Outer or upper end constructions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention relates to a self-adaptive sliding block, which comprises a first sliding block and a second sliding block which are respectively arranged between a first arm and a second arm and between a second arm and a third arm, wherein the first sliding block and the second sliding block are respectively positioned in mounting grooves formed at the tail parts of the second arm and the third arm, the upper surfaces of the first sliding block and the second sliding block are respectively in surface contact with the inner walls of cylinders of the first arm and the second arm and form sliding fit, and the lower surfaces of the first sliding block and the second sliding block are respectively in sliding fit with the mounting grooves on the second arm and the third arm. According to the technical scheme, the first sliding block and the second sliding block can be in surface contact sliding fit with the inner arms of the cylinder bodies of the first arm and the second arm all the time, so that the friction coefficient between the first sliding block and the cylinder body of the first arm and between the second sliding block and the cylinder body of the second arm is reduced, and the shaking frequency of the crane arm is reduced.
Description
Technical Field
The invention relates to a self-adaptive sliding block.
Background
Telescoping booms are the main load bearing components of most lifting equipment and some construction machinery, and in actual operation, a "jerky" unstable condition often occurs, which presents serious hazards to customers and products. How to overcome the shake, the method of improving the manufacturing process of the arm cylinder, reducing the surface friction coefficient of the sliding block and the like is mainly adopted in the industry, so that the shaking caused by sliding of the sliding block in the arm cylinder is avoided. However, the increasing manufacturing and material costs are prohibitive for the enterprise, and jitter still occurs while the boom is in operation. The reason for this is still due to manufacturing errors and bending deformation of the boom when the boom is in operation, the contact of the slider with the boom in the boom barrel becomes a line contact, resulting in an increase in the expansion and contraction resistance, and a greater fluctuation in resistance, thus generating vibrations and causing vibration resonance of the entire boom.
The main installation modes of the telescopic boom tail sliding block in the current industry are two, namely, the telescopic boom is fixed on the boom barrel by bolts; the other is freely placed on the surface of the arm cylinder, and the position of the arm cylinder is restrained by a square frame. Both the two ways can not solve the difficulty that the contact surface of the sliding block and the arm cylinder becomes point contact or line contact due to the poor manufacturing process, uneven surface of the arm cylinder and stress deformation of the crane arm.
Disclosure of Invention
The invention aims to provide a self-adaptive sliding block, which is always in surface contact with an arm cylinder, so that the friction coefficient between a first sliding block and a section of arm cylinder is reduced, and the shaking frequency of a crane arm is reduced.
In order to achieve the above purpose, the present invention adopts the following technical scheme: including setting up respectively between one section arm and two sections arms, two sections arm and the first slider and the second slider between the three sections arm, first slider and second slider be located the mounting groove that two sections arm and three sections arm afterbody set up respectively, and the upper surface of first slider and second slider forms the face contact and forms sliding fit with the barrel inner wall of one section arm and two sections arm respectively, the lower surface of first slider and second slider forms sliding fit with the mounting groove on two sections arm and the three sections arm respectively.
The first sliding block comprises a sliding block body and a spherical universal joint arranged on the lower surface of the sliding block body, the upper surface of the sliding block body is an arc surface, the arc of the arc surface is identical with the arc of the inner wall of a section of arm cylinder, the lower surface of the sliding block body is a plane, a hemispherical concave surface is inwards arranged at the center of the plane and used for accommodating the spherical universal joint, the spherical universal joint is connected with the concave surface in a spherical mode, and the bottom surface of the spherical universal joint is in surface contact with the mounting groove on the two sections of arms and forms sliding fit.
The spherical universal joint is a hemispherical universal joint, the bottom surface of the spherical universal joint is a plane, and the bottom surface of the spherical universal joint protrudes out of the bottom surface of the sliding block body.
The upper surface of first slider is equipped with first lubrication groove and the second lubrication groove that is the diagonal direction setting, the side of first slider still is equipped with the mounting hole, the mounting hole in be equipped with the steel bushing that is used for installing the grease nipple, the crossing department of first lubrication groove and second lubrication groove communicates with the mounting hole through the connecting pipe.
The first sliding block and the second sliding block are respectively arranged at two corners of the upper ends of the tail parts of the two-section arm and the three-section arm.
According to the technical scheme, the first sliding block and the second sliding block can be in surface contact sliding fit with the inner arms of the cylinder bodies of the first arm and the second arm all the time, so that the friction coefficient between the first sliding block and the cylinder body of the first arm and between the second sliding block and the cylinder body of the second arm is reduced, and the shaking frequency of the crane arm is reduced.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of a first slider according to the present invention;
FIG. 3 is an exploded view of FIG. 2;
FIG. 4 is a front view of a first slider of the present invention;
FIG. 5 is a top view of FIG. 4;
fig. 6 is a cross-sectional view A-A of fig. 4.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 6, the adaptive sliding block includes a first sliding block 4 and a second sliding block 5 respectively disposed between a first arm 1 and a second arm 2 and between a second arm 2 and a third arm 3, the first sliding block 4 and the second sliding block 5 are respectively disposed at two corners of the upper ends of the tail portions of the second arm 2 and the third arm 3, the first sliding block 4 and the second sliding block 5 are respectively disposed in mounting grooves 6 disposed at the tail portions of the second arm 2 and the third arm 3, and the upper surfaces of the first sliding block 4 and the second sliding block 5 are respectively in surface contact with the inner walls of the cylinders of the first arm 1 and the second arm 2 and form sliding fit, and the lower surfaces of the first sliding block 4 and the second sliding block 5 are respectively in sliding fit with the mounting grooves 6 on the second arm 2 and the third arm 3. Specifically, taking the first sliding block as an example, two first sliding blocks 4 are arranged between a first arm 1 and a second arm 2, a mounting groove 6 for placing the first sliding blocks 4 is formed in the outer wall of the cylinder body of the second arm 2, the mounting groove 6 is formed in two corners of the upper end of the tail end face of the second arm, namely, the whole mounting groove 6 is arranged in an inclined plane, the mounting space of the mounting groove 6 is slightly larger than the size of the first sliding block 4, the first sliding block 4 can only slide in the range limited by the mounting groove 6, the first sliding block 4 is placed in the mounting groove 6, the first sliding block 4 and the mounting groove 6 are not fixedly connected, the lower surface of the first sliding block 4 and the mounting groove 6 form sliding fit, the upper surface of the first sliding block 4 and the inner wall of the cylinder body of the first arm form surface contact, and the first sliding block 4 and the second sliding block are in sliding fit.
Further, the first slider 4 includes a slider body 41 and a spherical universal joint 42 disposed on a lower surface of the slider body 41, an upper surface of the slider body 41 is an arc surface, an arc of the arc surface is identical to an arc of an inner wall of a barrel of the first arm 1, a lower surface of the slider body 41 is a plane, a hemispherical concave surface 43 is disposed at a center of the plane and is used for accommodating the spherical universal joint 42, the spherical universal joint 42 is in spherical connection with the concave surface 43, the spherical universal joint 42 is a hemispherical universal joint, a bottom surface of the spherical universal joint 42 is a plane, and a bottom surface of the spherical universal joint 42 protrudes out of the bottom surface of the slider body 41, and the bottom surface of the spherical universal joint 42 is in surface contact with the mounting groove 6 on the second arm 2 and forms sliding fit. The second slider 5 has exactly the same structure as the first slider 4, and the structure of the second slider 5 will not be described here again.
Further, the upper surface of the first slider 4 is provided with a first lubrication groove 44 and a second lubrication groove 45 which are arranged in a diagonal direction, namely, the first lubrication groove 44 and the second lubrication groove 45 are crossed to form an X shape, the side surface of the first slider 4 is also provided with a mounting hole 46, a steel sleeve 8 for mounting the grease nipple 7 is arranged in the mounting hole 46, the intersection of the first lubrication groove 44 and the second lubrication groove 45 is communicated with the mounting hole 46 through a connecting pipe 47, and grease enters the first lubrication groove 44 and the second lubrication groove 45 through the grease nipple 7 and the connecting pipe 47.
The working principle of the invention is described below by taking a first slider as an example:
when the crane arm is stressed, the spherical universal joint is arranged at the bottom of the first sliding block, so that the first sliding block can be adjusted by 360 degrees according to the stress direction, the upper surface of the first sliding block is always in surface contact with the inner wall of the cylinder body of the one-section arm, the friction coefficient between the first sliding block and the cylinder body of the one-section arm is reduced, and the shaking frequency of the crane arm is reduced.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (2)
1. An adaptive slider, characterized in that: the device comprises a first sliding block (4) and a second sliding block (5) which are respectively arranged between a first arm (1) and a second arm (2) and between the second arm (2) and a third arm (3), wherein the first sliding block (4) and the second sliding block (5) are respectively positioned in mounting grooves (6) arranged at the tail parts of the second arm (2) and the third arm (3), the upper surfaces of the first sliding block (4) and the second sliding block (5) are respectively contacted with the inner walls of the cylinders of the first arm (1) and the second arm (2) to form sliding fit, and the lower surfaces of the first sliding block (4) and the second sliding block (5) are respectively in sliding fit with the mounting grooves (6) on the second arm (2) and the third arm (3);
the first sliding block (4) comprises a sliding block body (41) and a spherical universal joint (42) arranged on the lower surface of the sliding block body (41), the upper surface of the sliding block body (41) is an arc surface, the arc of the arc surface is matched with the arc of the inner wall of a cylinder body of a section of arm (1), the lower surface of the sliding block body (41) is a plane, a hemispherical concave surface (43) is inwards arranged in the center of the plane and used for accommodating the spherical universal joint (42), the spherical universal joint (42) is in spherical connection with the concave surface (43), and the bottom surface of the spherical universal joint (42) is in surface contact with a mounting groove (6) on the two sections of arms (2) to form sliding fit;
the spherical universal joint (42) is a hemispherical universal joint, the bottom surface of the spherical universal joint is a plane, and the bottom surface of the spherical universal joint (42) protrudes out of the bottom surface of the sliding block body (41);
the upper surface of first slider (4) is equipped with first lubrication groove (44) and second lubrication groove (45) that are the diagonal direction setting, the side of first slider (4) still is equipped with mounting hole (46), mounting hole (46) in be equipped with steel bushing (8) that are used for installing grease nipple (7), the crossing department of first lubrication groove (44) and second lubrication groove (45) communicates with mounting hole (46) through connecting pipe (47).
2. The adaptive slider of claim 1 wherein: the first sliding block (4) and the second sliding block (5) are respectively arranged at two corners at the upper ends of the tail parts of the two-section arm (2) and the three-section arm (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811499134.7A CN109516389B (en) | 2018-12-08 | 2018-12-08 | Self-adaptive sliding block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811499134.7A CN109516389B (en) | 2018-12-08 | 2018-12-08 | Self-adaptive sliding block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109516389A CN109516389A (en) | 2019-03-26 |
| CN109516389B true CN109516389B (en) | 2024-01-30 |
Family
ID=65795014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811499134.7A Active CN109516389B (en) | 2018-12-08 | 2018-12-08 | Self-adaptive sliding block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109516389B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09151080A (en) * | 1995-11-29 | 1997-06-10 | Aichi Corp | Boom tail slider |
| JP2001140278A (en) * | 1999-11-11 | 2001-05-22 | Kobelco Contstruction Machinery Ltd | Expansion arm of construction equipment |
| CN203212249U (en) * | 2013-03-12 | 2013-09-25 | 三一汽车起重机械有限公司 | Slide block between arms, cargo boom and automobile crane |
| CN205820752U (en) * | 2016-06-17 | 2016-12-21 | 徐州重型机械有限公司 | Discrete cross section crane arm and use the single cylinder bolt-type crane of this structure |
| CN209536833U (en) * | 2018-12-08 | 2019-10-25 | 安徽柳工起重机有限公司 | A kind of adaptive sliding block |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127732C (en) * | 1997-04-08 | 2003-11-12 | 西加特技术有限责任公司 | Improved suspension design for head gimbal assembly |
-
2018
- 2018-12-08 CN CN201811499134.7A patent/CN109516389B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09151080A (en) * | 1995-11-29 | 1997-06-10 | Aichi Corp | Boom tail slider |
| JP2001140278A (en) * | 1999-11-11 | 2001-05-22 | Kobelco Contstruction Machinery Ltd | Expansion arm of construction equipment |
| CN203212249U (en) * | 2013-03-12 | 2013-09-25 | 三一汽车起重机械有限公司 | Slide block between arms, cargo boom and automobile crane |
| CN205820752U (en) * | 2016-06-17 | 2016-12-21 | 徐州重型机械有限公司 | Discrete cross section crane arm and use the single cylinder bolt-type crane of this structure |
| CN209536833U (en) * | 2018-12-08 | 2019-10-25 | 安徽柳工起重机有限公司 | A kind of adaptive sliding block |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109516389A (en) | 2019-03-26 |
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