CN219341549U - Auxiliary arm amplitude variation structure and crane - Google Patents
Auxiliary arm amplitude variation structure and crane Download PDFInfo
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- CN219341549U CN219341549U CN202320002130.3U CN202320002130U CN219341549U CN 219341549 U CN219341549 U CN 219341549U CN 202320002130 U CN202320002130 U CN 202320002130U CN 219341549 U CN219341549 U CN 219341549U
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- pin
- auxiliary arm
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- horn
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Abstract
The utility model discloses a pair of arm amplitude changing structures and a crane, comprising a double pulling plate, a single pulling plate and a fastening part; the tail end of the double pulling plate is hinged with the connecting frame; the single pulling plate is inserted into the double pulling plate and can do linear reciprocating motion in the double pulling plate, and the front end of the single pulling plate is hinged with the auxiliary arm; the fastening component is used for fixing the positions of the single pulling plate after the double pulling plates move, and conversion between different variable-amplitude angles of the auxiliary arm is realized through fixing a plurality of positions of the single pulling plate. The auxiliary arm amplitude-changing structure disclosed by the utility model is of an error correction design, and the pulling plate is not stressed to deform under the condition that a user does not plug the pin shaft according to the requirement, so that the use reliability of the auxiliary arm is improved, and the use satisfaction of the user is increased.
Description
Technical Field
The utility model relates to the technical field of cranes, in particular to a luffing jib luffing structure.
Background
The auxiliary arm is used for supplementing and extending the main arm, so that the working amplitude and the lifting height of the crane are effectively improved. In order to meet the design requirements of different working conditions, most auxiliary arms are designed with an amplitude variation function. The auxiliary arm amplitude variation can be divided into mechanical amplitude variation and stepless amplitude variation, the stepless amplitude variation realizes the change of the auxiliary arm angle through the extension and contraction of the hydraulic oil cylinder, and the mechanical amplitude variation realizes the auxiliary arm amplitude variation (0 degree, 15 degrees, 30 degrees or 0 degree, 20 degrees and 40 degrees) of fixed angle through the shaft hole positioning of the pulling plate. The pulling plate is a main structure for realizing mechanical amplitude variation of the auxiliary arm, and is generally used in pairs, the small-tonnage auxiliary arm pulling plate consists of a fixed pulling plate 100 and a movable pulling plate 200, the fixed pulling plate 100 is welded with the auxiliary arm 002 into a whole, a guide wheel bracket 300 is arranged on the fixed pulling plate 100, and the pulling plate for connecting the connecting frame 001 with the amplitude variation part is called the movable pulling plate 200. The movable pulling plate is connected with the connector and the fixed pulling plate through a pin 400, as shown in fig. 1.
The fixed pulling plate and the auxiliary arm are structurally integrated, when the auxiliary arm changes amplitude, the fixed pulling plate and the movable pulling plate are staggered, and if a user does not pull out the corresponding pin shaft according to the operation requirement, the pulling plate is stressed and deformed.
Disclosure of Invention
The utility model provides a novel auxiliary arm amplitude variation structure which is designed for error correction, and can not deform a pulling plate under stress under the condition that a user does not plug a pin shaft according to the requirement, so that the use reliability of an auxiliary arm is improved, and the use satisfaction of the user is increased.
The utility model is realized according to the following technical scheme:
the first aspect of the utility model discloses a forearm luffing structure, comprising:
the tail end of the double pulling plate is hinged with the connecting frame;
the single pulling plate is inserted into the double pulling plate and can perform linear reciprocating motion in the double pulling plate, and the front end of the single pulling plate is hinged with the auxiliary arm;
the fastening component is used for fixing the positions of the single pulling plate after the double pulling plates move, and conversion between different variable-amplitude angles of the auxiliary arm is realized through fixing a plurality of positions of the single pulling plate.
In some embodiments, the double-pulling plate is a hollow straight plate type structure, the tail end of the double-pulling plate is provided with a reaming for connecting with the connecting frame, and the front end to the rear end of the double-pulling plate is provided with a plurality of pin holes at intervals.
In some embodiments, the single pull plate is a straight plate type structure, the front end of the single pull plate is provided with a reaming for connecting with the auxiliary arm, and the front part to the rear part of the single pull plate are provided with a straight limiting hole.
In some embodiments, the double pulling plate is provided with three pin holes at intervals, namely, a 0-degree pin hole, a 15-degree pin hole and a 30-degree pin hole from back to front.
In some embodiments, the fastening components are pin a and pin b; when the single pulling plate is completely inserted into the double pulling plate, the pin shaft a penetrates through the 30-degree pin hole, the pin shaft b penetrates through the 0-degree pin hole, and the auxiliary arm is in a 0-degree state after the pin shaft b is in contact with the limit hole of the single pulling plate; when the pin shaft a penetrates through the 30-degree pin hole, the pin shaft b penetrates through the 15-degree pin hole, and the auxiliary arm is in a 15-degree state after the pin shaft b contacts with the limit hole of the single pulling plate; and pulling out the pin shaft b, and when the pin shaft a is contacted with the limiting hole of the single pulling plate, the auxiliary arm is in a 30-degree state.
In some embodiments, the pin a and the pin b are both provided with clips for axially limiting the pin a and the pin b.
In some embodiments, the double pulling plate is hinged to the connecting frame through a pin shaft, and the single pulling plate is hinged to the auxiliary arm through a pin shaft.
In some embodiments, a guide pulley is installed at the top of the tail end of the auxiliary arm, a rope pressing pulley is installed at the top of the connecting frame, and the steel wire rope passes through the rope pressing pulley and the guide pulley respectively and then is hung by a crane through the crane pulley.
In some embodiments, the rope pressing pulley is composed of an upper pulley and a lower pulley, and the steel wire rope passes between the two pulleys.
The utility model discloses a crane in a second aspect, which comprises a crane boom and an auxiliary boom, wherein the auxiliary boom luffing structure is arranged on the auxiliary boom.
Compared with the prior art, the utility model has the beneficial effects that:
1. only one pin shaft is needed to be inserted and pulled in the amplitude changing process, so that the amplitude changing convenience is improved;
2. the structure that the single pulling plate and the double pulling plates are hinged with the auxiliary arm is adopted, so that the problem of stress deformation of the pulling plates caused by misplug bolt shafts is prevented;
the state of 3.15 degrees can be directly changed into the state of 30 degrees, transition is not needed through the state of 0 degree, and the customer amplitude changing efficiency is improved;
4. the guide pulley and the connector are of an integrated structure, so that space is saved, and the disassembly and assembly efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.
In the drawings:
FIG. 1 is a schematic view of a conventional horn luffing structure;
the attached drawings are identified: 001: a connecting frame; 002: a secondary arm; 100: fixing the pulling plate; 200: a movable pulling plate; 300: a guide wheel bracket; 400: a pin shaft;
FIG. 2 is a schematic view of a conventional horn at 0 luffing state;
the attached drawings are identified: 100: fixing the pulling plate; 200: a movable pulling plate; 401: a pin a;402: a pin b;502: a pin hole of 15 degrees;
fig. 3 is a schematic view of a conventional auxiliary arm in a 15 ° amplitude variation state (a is a front view, and b is a partial enlarged view);
the attached drawings are identified: 100: fixing the pulling plate; 200: a movable pulling plate; 402: a pin b;
fig. 4 is a schematic view of a conventional horn in a 30 ° luffing state (a is a front view, b is a partial enlarged view);
the attached drawings are identified: 100: fixing the pulling plate; 200: a movable pulling plate; 402: a pin b;
fig. 5 shows a novel horn amplitude structure in an amplitude variation state of 0 ° (a is a front view, b is a partial enlarged view);
the attached drawings are identified: 001: a connecting frame; 002: a secondary arm; 600: a single pulling plate; 700: double pulling plates; 401: a pin a;402: a pin b;502: a pin hole of 15 degrees; 800: a guide pulley; 900: rope pressing pulleys;
FIG. 6 is an exploded view of the novel horn (a being a front view and b being a partial enlarged view);
the attached drawings are identified: 600: a single pulling plate; 700: double pulling plates; 401: a pin a;402: a pin b;502: a pin hole of 15 degrees; 800: a guide pulley; 900: rope pressing pulleys;
fig. 7 is a 15 ° amplitude variation state (a is a front view, b is a partial enlarged view) of the novel horn amplitude variation structure;
the attached drawings are identified: 600: a single pulling plate; 700: double pulling plates; 401: a pin a;402: a pin b;
fig. 8 is a 30 ° amplitude variation state (a is a front view, b is a partial enlarged view) of the novel horn amplitude variation structure;
the attached drawings are identified: 600: a single pulling plate; 700: double pulling plates; 401: and a pin a.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Taking the auxiliary arm with 0 degree, 15 degrees and 30 degrees of amplitude as an example, the traditional amplitude changing process is as follows:
so that the steel wire rope is tensioned, the pin b402 and the clamp are pulled out, the steel wire rope is inserted into the 15-degree pin hole 502, and the pin a401 and the clamp are pulled out, as shown in fig. 2. Slowly paying out the steel wire rope, and stopping paying out the steel wire rope when the pin shaft b402 contacts with the limiting hole on the movable pulling plate 200. At this time, the sub-arm is in a 15 ° state as shown in fig. 3.
The wire rope is slowly retracted, so that the wire rope is tensioned, and the pin a401 and the clamp are pulled out, as shown in fig. 2. Slowly paying out the steel wire rope, and stopping paying out the steel wire rope when the pin shaft b402 contacts with the limiting hole on the movable pulling plate 200. At this time, the sub-arm is in a 30 ° state as shown in fig. 4.
When the auxiliary arm is changed from the 15 DEG state to the 30 DEG variable amplitude state, the auxiliary arm is firstly changed to the 0 DEG state, and then is changed from the 0 DEG state to the 30 DEG state according to the operation.
When the existing structure is changed from 0 degree to 15 degrees, if the pin a401 is not pulled out, the steel wire rope is directly paid out, so that the movable pulling plate 200 is stressed and deformed, as shown in fig. 2. When the auxiliary arm is changed from a 15 DEG state to a 30 DEG amplitude changing state, the auxiliary arm is also required to be changed to 0 DEG first, and the amplitude changing efficiency is low.
In order to solve the problem of deformation of the pulling plate caused by misoperation of a customer and improve the amplitude changing efficiency of the auxiliary arm, a novel amplitude changing structure of the auxiliary arm is designed. When the auxiliary arm changes amplitude, the single pulling plate and the double pulling plates are always kept parallel, so that the problem of pulling plate deformation caused by misplug shafts is solved; when the auxiliary arm is changed from 15 degrees to 30 degrees, the auxiliary arm is directly changed to 30 degrees through the plug pin shaft without being changed to 0 degree, so that the service efficiency of a customer is improved, and the customer satisfaction is improved. The guide pulley is a fixed structure, is designed as a whole with the auxiliary arm joint, saves space, and avoids the problem that the single and double pulling plate amplitude changing structures have no space arrangement assembly type guide pulley. As shown in fig. 5 and 6, a luffing jib amplitude structure comprises a single pulling plate 600, a double pulling plate 700, a guide pulley 800, a rope pressing pulley 900, a pin a401 and a pin b402; the tail end of the double-pulling plate 700 is connected with the connecting frame 001 through a pin shaft, the single-pulling plate 600 is inserted into the double-pulling plate 700 and can perform linear reciprocating motion in the double-pulling plate 700, and the front end of the single-pulling plate 600 is connected with the auxiliary arm 002 through a pin shaft; the pin a401 and the pin b402 are used for fixing the positions of the single pulling plate 600 after the double pulling plate 700 moves, and the conversion between different variable-amplitude angles of the auxiliary arm 002 is realized by fixing a plurality of positions of the single pulling plate 600; the guide pulley 800 is installed at the tail end top of the auxiliary arm 002, the rope pressing pulley 900 is installed at the top of the connecting frame 001, and the steel wire rope passes through the rope pressing pulley 900 and the guide pulley 800 respectively and then passes through the hoisting pulley to be hoisted.
The further scheme is as follows: the double-pulling plate 700 has a hollow in-line plate type structure, and has a hinge hole at its rear end for connection with the connection frame 001, and a plurality of pin holes at intervals from the front end to the rear end. The single pulling plate 600 has a straight plate type structure, and has a hinge hole at its front end for connection with the sub-arm 002, and a straight limiting hole at its front to rear.
The further scheme is as follows: three pin holes are formed in the double-pulling plate 700 at intervals, wherein the pin holes are respectively 0-degree pin holes, 15-degree pin holes 502 and 30-degree pin holes from back to front. When the single pulling plate 600 is completely inserted into the double pulling plate 700, the pin a401 penetrates through the 30-degree pin hole, the pin b402 penetrates through the 0-degree pin hole, and after the pin b402 contacts with the limit hole of the single pulling plate 600, the auxiliary arm 002 is in a 0-degree state; when the pin a401 penetrates through the 30-degree pin hole, the pin b402 penetrates through the 15-degree pin hole 502, and the pin b402 contacts with the limit hole of the single pull plate 600, the auxiliary arm 002 is in a 15-degree state; the pin b402 is pulled out, and after the pin a401 contacts with the limiting hole of the single pull plate 600, the auxiliary arm 002 is in a 30 degree state.
When the auxiliary arm is changed from 0 DEG to 15 DEG, the steel wire rope is tensioned, the pin b401 and the clamp are pulled out, and the pin b and the clamp are inserted into the 15 DEG pin hole 502, as shown in fig. 5. The wire rope is slowly paid out, and when the pin b402 contacts with the limiting hole on the single pulling plate 600, the wire rope is stopped from being paid out. At this time, the sub-arm is in a 15 ° state as shown in fig. 7.
When the auxiliary arm is changed from 0 DEG to 30 DEG, the steel wire rope is tensioned, and the pin b402 and the clamp are directly pulled out, as shown in fig. 5. The wire rope is slowly released, and when the pin a401 contacts with the limiting hole on the single pulling plate 600, the wire rope is stopped from being released. At this time, the sub-arm is in a 30 ° state as shown in fig. 8.
When the auxiliary arm is changed from 15 degrees to 30 degrees, the steel wire rope is tensioned, and the pin shaft b402 and the clamp are directly pulled out, as shown in fig. 6. The wire rope is slowly released, and when the pin a401 contacts with the limiting hole on the single pulling plate 600, the wire rope is stopped from being released. At this time, the sub-arm is in a 30 ° state as shown in fig. 8.
In conclusion, according to the novel auxiliary arm amplitude changing structure provided by the utility model, only one pin shaft is required to be plugged in and pulled out in the amplitude changing process, so that the amplitude changing convenience is improved; the structure that the single pulling plate and the double pulling plates are hinged with the auxiliary arm is adopted, so that the problem of stress deformation of the pulling plates caused by misplug bolt shafts is prevented; the 15-degree state can be changed into 30-degree state directly, transition is not needed through the 0-degree state, and the customer amplitude changing efficiency is improved; the guide pulley and the connector are of an integrated structure, so that space is saved, and the disassembly and assembly efficiency is improved.
The utility model also provides a crane, which comprises a crane boom and an auxiliary boom, wherein the auxiliary boom luffing structure is arranged on the auxiliary boom.
The crane arm is used for lifting heavy objects, can realize amplitude variation and expansion by means of an oil cylinder, is formed by butt welding two bending plates, and has a structure similar to a rectangle in section. And when the vehicle is not in working state, the vehicle is placed in a horizontal state along the direction of the vehicle body. The auxiliary arm is used for increasing the lifting height and amplitude of the boom structural member of the crane, is hung on one side of the boom in a non-working state, and is required to be pulled out in a rotating way around a point and used in butt joint with the boom in working.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features contained in other embodiments, but not others, combinations of features of different embodiments are equally meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use the above embodiments in combination according to known technical solutions and technical problems to be solved by the present application.
The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any simple modification, equivalent variation and variation of the above embodiments according to the technical matter of the present utility model without departing from the scope of the utility model.
Claims (10)
1. A horn-like horn structure comprising:
the tail end of the double pulling plate is hinged with the connecting frame;
the single pulling plate is inserted into the double pulling plate and can perform linear reciprocating motion in the double pulling plate, and the front end of the single pulling plate is hinged with the auxiliary arm;
the fastening component is used for fixing the positions of the single pulling plate after the double pulling plates move, and conversion between different variable-amplitude angles of the auxiliary arm is realized through fixing a plurality of positions of the single pulling plate.
2. A horn as in claim 1, wherein:
the double-pulling plate is of a hollow straight plate type structure, the tail end of the double-pulling plate is provided with a reaming hole for connecting with the connecting frame, and a plurality of pin holes are formed in the front end to the rear portion of the double-pulling plate at intervals.
3. A horn as in claim 2, wherein:
the single pulling plate is of a straight plate type structure, the front end of the single pulling plate is provided with a reaming hole used for being connected with the auxiliary arm, and the front part to the rear part of the single pulling plate are provided with straight limiting holes.
4. A horn as in claim 3, wherein:
the double-pulling plate is provided with three pin holes at intervals, namely 0-degree pin holes, 15-degree pin holes and 30-degree pin holes from back to front.
5. A horn as in claim 4, wherein:
the fastening parts are a pin a and a pin b;
when the single pulling plate is completely inserted into the double pulling plate, the pin shaft a penetrates through the 30-degree pin hole, the pin shaft b penetrates through the 0-degree pin hole, and the auxiliary arm is in a 0-degree state after the pin shaft b is in contact with the limit hole of the single pulling plate;
when the pin shaft a penetrates through the 30-degree pin hole, the pin shaft b penetrates through the 15-degree pin hole, and the auxiliary arm is in a 15-degree state after the pin shaft b contacts with the limit hole of the single pulling plate;
and pulling out the pin shaft b, and when the pin shaft a is contacted with the limiting hole of the single pulling plate, the auxiliary arm is in a 30-degree state.
6. A horn as in claim 5, wherein:
and the pin shaft a and the pin shaft b are respectively provided with a clip for axially limiting the pin shaft a and the pin shaft b.
7. A horn as in claim 1, wherein:
the double pull plates are hinged with the connecting frame through pin shafts, and the single pull plates are hinged with the auxiliary arm through pin shafts.
8. A horn as in claim 1, wherein:
the guide pulley is installed at the top of the tail end of the auxiliary arm, the rope pressing pulley is installed at the top of the connecting frame, and the steel wire rope passes through the rope pressing pulley and the guide pulley respectively and then passes through the hoisting pulley to be hoisted.
9. A horn as in claim 8, wherein:
the rope pressing pulley consists of an upper pulley and a lower pulley, and the steel wire rope passes through the space between the two pulleys.
10. The utility model provides a hoist, includes boom and auxiliary arm, its characterized in that:
a horn amplitude structure according to any one of claims 1 to 9 mounted on the horn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320002130.3U CN219341549U (en) | 2023-01-03 | 2023-01-03 | Auxiliary arm amplitude variation structure and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320002130.3U CN219341549U (en) | 2023-01-03 | 2023-01-03 | Auxiliary arm amplitude variation structure and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219341549U true CN219341549U (en) | 2023-07-14 |
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ID=87105642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320002130.3U Active CN219341549U (en) | 2023-01-03 | 2023-01-03 | Auxiliary arm amplitude variation structure and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219341549U (en) |
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2023
- 2023-01-03 CN CN202320002130.3U patent/CN219341549U/en active Active
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