CN110790157A - Telescopic boom and crane boom - Google Patents
Telescopic boom and crane boom Download PDFInfo
- Publication number
- CN110790157A CN110790157A CN201911120334.1A CN201911120334A CN110790157A CN 110790157 A CN110790157 A CN 110790157A CN 201911120334 A CN201911120334 A CN 201911120334A CN 110790157 A CN110790157 A CN 110790157A
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- Prior art keywords
- arm
- adjusting
- section
- slide block
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention relates to the technical field of cranes, in particular to a telescopic boom and a crane boom. A telescopic arm comprises a first section arm, a second section arm and at least one adjusting sliding block. The first section arm comprises at least one tightening structure, and the adjusting slide block is connected with the tightening structure. After the first section arm stretches into the second section arm, the tightening structure is used for driving the adjusting slide block to move relative to the first section arm under the action of external force, so that the adjusting slide block is tightly abutted to the second section arm. This flexible arm can make and laminate the dress tightly completely between each festival arm to avoid mutually supporting festival arm to form the fit-up gap, thereby avoid the jib loading lateral bending and flexible abnormal sound scheduling problem to appear in the jib loading.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a telescopic boom and a crane boom.
Background
In the prior art, the slider of jib loading boom all passes through the fix with screw at the arm tail, and such assembly mode can make the jib loading boom form the fit-up gap between the arm head and the arm tail of festival arm when flexible cooperation, and then leads to the jib loading sidewise bending and flexible abnormal sound scheduling problem to appear.
Disclosure of Invention
The invention aims to provide a telescopic boom and a crane boom, for example, the telescopic boom can enable all sections of the boom to be completely attached and tightened so as to avoid the formation of an assembly gap between a head and a tail of the matched sections of the boom, thereby avoiding the problems of sidewise load and abnormal telescopic noise of the crane boom.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment provides a telescopic boom, which includes a first arm section, a second arm section, and at least one adjusting slider;
the first section arm comprises at least one tightening structure, and the adjusting slide block is connected with the tightening structure;
after the first section arm stretches into the second section arm, the tightening structure is used for driving the adjusting slide block to move relative to the first section arm under the action of external force, so that the adjusting slide block is tightly abutted to the second section arm.
In an alternative embodiment, the tightening structure comprises an adjusting bolt and a mounting hole arranged on the first knuckle arm;
the adjusting bolt penetrates through the mounting hole and is in threaded connection with the mounting hole, and one end, located outside the first section arm, of the adjusting bolt is connected with the adjusting slide block.
In an optional embodiment, the tightening structure further comprises a limiting frame arranged on the outer peripheral surface of the first knuckle arm, and the limiting frame is provided with a profile adapted to the adjusting slider so as to guide the adjusting slider to move along the axial direction of the adjusting bolt.
In an alternative embodiment, the height of the limiting frame is smaller than that of the adjusting slide block in the axial direction of the adjusting bolt.
In an optional embodiment, a clamping groove is arranged at one end of the adjusting slider, which is connected with the adjusting bolt, and the clamping groove is used for being clamped with the head of the adjusting bolt.
In an alternative embodiment, the telescopic arm further comprises a plurality of fixed sliders, the plurality of fixed sliders are arranged at intervals around the axis of the first knuckle arm, and the plurality of fixed sliders are connected with the first knuckle arm or the second knuckle arm.
In an alternative embodiment, the end of the adjusting slider, which is used for abutting against the second joint arm, is provided with a profile adapted to the inner circumferential surface of the second joint arm.
In an optional embodiment, the telescopic arm comprises a plurality of adjusting sliders, the first arm comprises a plurality of tightening structures, and the adjusting sliders are connected with the tightening structures in a one-to-one correspondence manner.
In an alternative embodiment, the plurality of tightening structures are sequentially arranged at intervals around the axial direction of the first pitch arm.
In a second aspect, embodiments provide a crane boom comprising a telescopic boom as described above.
The embodiment of the invention has the beneficial effects that:
the telescopic arm comprises a first section arm, a second section arm and at least one adjusting slide block. Wherein, first festival arm includes at least one and adjusts the tight structure, adjusts the slider and is connected with tightening structure, and tightening structure is used for driving the regulation slider for first festival arm activity under the effect of external force. Therefore, the position of the adjusting slide block relative to the first adjusting arm can be adjusted through the tightening structure, after the first adjusting arm extends into the second adjusting arm, the adjusting slide block can be adjusted relative to the position of the first adjusting arm through the tightening structure, so that the adjusting slide block can adapt to different assembly gaps, under the condition that the assembly gap between the first adjusting arm and the second adjusting arm changes, the first adjusting arm is in a tight abutting state through the adjusting slide block and the second adjusting arm through the matching action of the tightening structure and the adjusting slide block, so that the first adjusting arm and the second adjusting arm are tightly attached, and the problems of side bending, telescopic abnormal sound and the like of a crane boom can be avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a telescopic boom according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first arm segment according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view at III in FIG. 2;
FIG. 4 is a schematic diagram illustrating the arrangement of the mounting holes and the limiting blocks in the embodiment of the present invention;
FIG. 5 is a schematic perspective view of an installation hole and a limiting block in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of an adjusting slider in the embodiment of the present invention.
Icon: 200-telescopic arm; 210-a first jointed arm; 220-a second jointed arm; 230-adjusting the sliding block; 240-tightening structure; 241-adjusting bolts; 242-mounting holes; 243-a limit frame; 244-card slot.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
In the prior art, because the manufacturing error when the welding of arm head, arm tail and barrel is organized and various support and reinforcing plate need weld on the jib loading boom barrel to make the festival arm local deformation can appear, make from this festival arm when mutually supporting, assembly gap can appear between the festival arm, and the slider passes through the mode of fix with screw at the festival arm and can not eliminate the assembly gap between the festival arm, and then leads to the jib loading lateral bending to appear and the abnormal sound scheduling problem of stretching out and drawing back.
For the above reasons, the present embodiment provides a telescopic arm 200.
Referring to fig. 1 to 3, fig. 1 to 3 show the structure of the telescopic arm in the present embodiment.
The telescopic arm 200 includes a first jointed arm 210, a second jointed arm 220, and at least one adjustment slider 230.
The first arm section 210 includes at least one tightening structure 240, the adjusting slider 230 is connected to the tightening structure 240, and the tightening structure 240 is configured to drive the adjusting slider 230 to move relative to the first arm section 210, so that the adjusting slider 230 can adapt to different assembly gaps.
After the first arm section 210 extends into the second arm section 220, the tightening structure 240 is used for driving the adjusting slider 230 to move relative to the first arm section 210 under the action of external force, so that the adjusting slider 230 can adapt to a corresponding assembly gap, and the adjusting slider 230 is tightly abutted against the second arm section 220, thereby ensuring that the first arm section 210 and the second arm section 220 are in a tightly abutted state.
The working principle of the telescopic arm 200 is as follows:
the telescopic arm 200 includes a first jointed arm 210, a second jointed arm 220, and at least one adjustment slider 230. The first arm section 210 includes at least one tightening structure 240, the adjusting slider 230 is correspondingly connected to the tightening structure 240, and the tightening structure 240 is configured to drive the adjusting slider 230 to move relative to the first arm section 210 under the action of an external force.
Therefore, the position of the adjusting slider 230 relative to the first adjusting arm 210 can be adjusted by the tightening structure 240, so that after the first adjusting arm 210 extends into the second adjusting arm 220, the adjusting slider 230 connected with the tightening structure 240 is relatively located in the assembly gap between the first adjusting arm 210 and the second adjusting arm 220, and the adjustment of the position of the adjusting slider 230 relative to the first adjusting arm 210 by the tightening structure 240 enables the adjusting slider 230 to move in the assembly gap between the first adjusting arm 210 and the second adjusting arm 220 and abut against the second adjusting arm 220 to adapt to different assembly gaps, so that under the condition that the assembly gap between the first adjusting arm 210 and the second adjusting arm 220 changes, the first adjusting arm 210 is in an abutting state with the second adjusting arm 220 by the tightening structure 240 and the adjusting slider 230, so that the first adjusting arm 210 and the second adjusting arm 220 are abutted and tightened, and then can avoid the jib loading lateral bending and flexible abnormal sound scheduling problem to appear.
Further, referring to fig. 3-5, fig. 3-5 show the structure of the tightening structure in this embodiment.
In this embodiment, the tightening mechanism 240 is used to connect the adjustment slider 230 and move the adjustment slider 230 relative to the first arm 210. Thus, referring to fig. 3 in conjunction with fig. 1, when the tightening structure 240 is provided, the tightening structure 240 may include an adjusting bolt 241 and a mounting hole 242 provided on the first arm 210; and an adjusting bolt 241 passes through the mounting hole 242 and is threadedly coupled to the mounting hole 242, and an end of the adjusting bolt 241 located outside the first knuckle arm 210 is coupled to the adjusting slider 230.
By adopting the arrangement mode of the tightening structure 240, when the adjusting bolt 241 is rotated, the adjusting bolt 241 moves relative to the mounting hole 242 and drives the adjusting slider 230 connected with the adjusting bolt 241 to move, so that the effect of tightening with the second joint arm 220 is achieved.
It should be noted that, in the embodiment of the present invention, when the tightening structure 240 is adopted, an adjusting nut may be further provided, the adjusting nut is in threaded connection with one end of the adjusting bolt 241 located in the first arm section 210, and when the adjusting nut is in threaded fit with the adjusting bolt 241 and abuts against the first arm section 210, the adjusting nut can limit the movement of the adjusting bolt 241, so as to perform a limiting function.
In addition, in other embodiments of the present invention, in order to allow the adjustment slider 230 to move relative to the first joint arm 210 and to accommodate different assembly gaps, other types of arrangements of the tightening structure 240 may be used.
Further, as can be seen from the above, the tightening structure 240 is intended to be tightened against the second knuckle arm 220 in different assembly gaps by changing the position of the adjustment slider 230 when the adjustment slider 230 is driven to move relatively, and thus is intended to move in the assembly gap toward the second knuckle arm 220 relative to the first knuckle arm 210 during the movement of the adjustment slider 230. In such a movement manner, referring to fig. 4 and 5, in the present embodiment, in order to reduce the manufacturing difficulty and improve the connection stability between the tightening structure 240 and the adjustment slider 230, when the mounting hole 242 is disposed, the axial direction of the mounting hole 242 may be perpendicular to the axial direction of the first arm 210, and thus, when the adjustment slider 230 moves relative to the first arm 210, the movement direction thereof is the direction perpendicular to the axial direction of the first arm 210.
Further, in this embodiment, the tightening structure 240 further includes a limiting frame 243 disposed on the outer peripheral surface of the first arm section 210, and the limiting frame 243 has a contour adapted to the adjusting slider 230, so as to limit the adjusting slider 230 from shaking and the like during the movement process, so as to improve the stability of the movement and the stability of the tightening between the adjusting slider 230 and the second arm section 220 while guiding the adjusting slider 230 to move along the axial direction of the adjusting bolt 241.
Referring to fig. 6, fig. 6 shows a structure of the adjusting slider in the present embodiment.
In addition, when the above-mentioned limiting frame 243 is disposed on the outer peripheral surface of the first arm section 210, in the process of connecting the adjusting bolt 241 with the adjusting slider 230, in order to facilitate the butt joint of the adjusting bolt 241 and the adjusting slider 230, the adjusting bolt 241 and the adjusting slider 230 may adopt a clamping connection manner, specifically, a clamping groove 244 is disposed at one end of the adjusting slider 230 connected with the adjusting bolt 241, and the clamping groove 244 is used for clamping the head of the adjusting bolt 241. And the clamping connection mode can adopt a connection mode that a T-shaped groove is arranged on the adjusting sliding block 230, and the head of the adjusting bolt 241 is clamped with the T-shaped groove.
When the limiting frame 243 is provided, in order to prevent the limiting frame 243 from affecting the abutting between the adjusting slider 230 and the second arm 220, the height of the limiting frame 243 is smaller than the height of the adjusting slider 230 in the axial direction of the adjusting bolt 241.
Further, in the present embodiment, the telescopic arm 200 further includes a plurality of fixed sliders, the plurality of fixed sliders are disposed at intervals around the axis of the first joint arm 210, and the plurality of fixed sliders are connected to the first joint arm 210 or the second joint arm 220.
When the fixed slider and the adjustment slider 230 are provided, the fixed slider and the adjustment slider 230 may be sequentially disposed at intervals around the axis of the first arm section 210, so as to improve stability when the first arm section 210 and the second arm section 220 are fastened together.
Similarly, in order to further improve the stability when the first knuckle arm 210 and the second knuckle arm 220 are fastened together, the end of the adjusting slider 230, which abuts against the second knuckle arm 220, has a profile adapted to the inner peripheral surface of the second knuckle arm 220, so as to increase the contact area between the adjusting slider 230 and the second knuckle arm 220, thereby improving the stability of the abutment.
Based on the above arrangement manner of the adjusting sliders 230 and the tightening structures 240, in this embodiment, the telescopic arm 200 may further include a plurality of adjusting sliders 230, the first arm section 210 may further include a plurality of tightening structures 240, the plurality of tightening structures 240 are sequentially arranged at intervals around the axis direction of the first arm section 210, and the plurality of adjusting sliders 230 and the plurality of tightening structures 240 are connected in a one-to-one correspondence manner. Therefore, the tight attaching degree of the first arm section 210 and the second arm section 220 is further improved through the abutting action of the adjusting sliders 230, and the problems of sidewise bending of the crane boom, abnormal telescopic sound and the like can be effectively avoided.
In addition, when a plurality of adjusting sliders 230 are provided, in other embodiments of the present invention, the telescopic arm 200 may further include a plurality of fixed sliders, and the plurality of fixed sliders and the plurality of adjusting sliders 230 are spaced around the axis of the first arm section 210, so as to improve stability when the first arm section 210 and the second arm section 220 are fastened together.
Based on the telescopic boom 200, the invention further provides a crane boom, which comprises the telescopic boom 200.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A telescopic boom, characterized in that:
the telescopic arm comprises a first section arm, a second section arm and at least one adjusting slide block;
the first knuckle arm comprises at least one tightening structure, and the adjusting slide block is connected with the tightening structure;
after the first section arm extends into the second section arm, the tightening structure is used for driving the adjusting slide block to move relative to the first section arm under the action of external force, so that the adjusting slide block is tightly abutted to the second section arm.
2. The telescopic arm according to claim 1, characterized in that:
the tightening structure comprises an adjusting bolt and a mounting hole arranged on the first knuckle arm;
the adjusting bolt penetrates through the mounting hole and is in threaded connection with the mounting hole, and one end, located outside the first section arm, of the adjusting bolt is connected with the adjusting sliding block.
3. The telescopic arm according to claim 2, wherein:
the tightening structure further comprises a limiting frame arranged on the outer peripheral surface of the first arm, and the limiting frame is provided with a profile matched with the adjusting slide block so as to guide the adjusting slide block to move along the axis direction of the adjusting bolt.
4. The telescopic arm according to claim 3, wherein:
in the axis direction of the adjusting bolt, the height of the limiting frame is smaller than that of the adjusting slide block.
5. The telescopic arm according to claim 2, wherein:
the adjusting slide block is provided with a clamping groove at one end connected with the adjusting bolt, and the clamping groove is used for being clamped with the head of the adjusting bolt.
6. The telescopic arm according to claim 5, wherein:
the telescopic arm further comprises a plurality of fixed sliding blocks, the fixed sliding blocks are arranged around the axis of the first section arm at intervals, and the fixed sliding blocks are connected with the first section arm or the second section arm.
7. The telescopic arm according to claim 1, characterized in that:
one end of the adjusting slide block, which is used for being tightly abutted against the second section arm, is provided with a profile which is adaptive to the inner peripheral surface of the second section arm.
8. The telescopic arm according to any one of claims 1 to 7, wherein:
the telescopic arm comprises a plurality of adjusting sliding blocks, the first section of arm comprises a plurality of tightening structures, and the adjusting sliding blocks are connected with the tightening structures in a one-to-one correspondence mode.
9. The telescopic arm according to claim 8, wherein:
the plurality of tightening structures are sequentially arranged at intervals around the axis direction of the first knuckle arm.
10. A cargo boom, characterized in that:
the boom comprising a telescopic arm according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911120334.1A CN110790157A (en) | 2019-11-15 | 2019-11-15 | Telescopic boom and crane boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911120334.1A CN110790157A (en) | 2019-11-15 | 2019-11-15 | Telescopic boom and crane boom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110790157A true CN110790157A (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911120334.1A Pending CN110790157A (en) | 2019-11-15 | 2019-11-15 | Telescopic boom and crane boom |
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| Country | Link |
|---|---|
| CN (1) | CN110790157A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113120783A (en) * | 2021-04-19 | 2021-07-16 | 三一汽车起重机械有限公司 | Adjusting device for crane boom, crane boom and crane |
| CN113582050A (en) * | 2021-07-30 | 2021-11-02 | 三一汽车起重机械有限公司 | Side bending correction device and method for crane boom and crane |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201703998U (en) * | 2009-12-09 | 2011-01-12 | 三一汽车制造有限公司 | Telescopic boom, telescopic boom lateral clearance adjusting device and crane |
| CN208182505U (en) * | 2018-03-08 | 2018-12-04 | 北汽福田汽车股份有限公司 | A kind of cantilever crane and the engineering machinery with the cantilever crane |
-
2019
- 2019-11-15 CN CN201911120334.1A patent/CN110790157A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201703998U (en) * | 2009-12-09 | 2011-01-12 | 三一汽车制造有限公司 | Telescopic boom, telescopic boom lateral clearance adjusting device and crane |
| CN208182505U (en) * | 2018-03-08 | 2018-12-04 | 北汽福田汽车股份有限公司 | A kind of cantilever crane and the engineering machinery with the cantilever crane |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113120783A (en) * | 2021-04-19 | 2021-07-16 | 三一汽车起重机械有限公司 | Adjusting device for crane boom, crane boom and crane |
| CN113120783B (en) * | 2021-04-19 | 2023-08-29 | 三一汽车起重机械有限公司 | Adjusting device for boom, boom and crane |
| CN113582050A (en) * | 2021-07-30 | 2021-11-02 | 三一汽车起重机械有限公司 | Side bending correction device and method for crane boom and crane |
| CN113582050B (en) * | 2021-07-30 | 2023-08-29 | 三一汽车起重机械有限公司 | Side bending correction device and method for crane boom and crane |
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Application publication date: 20200214 |