CN216336286U - Stepped arm tail and crane boom - Google Patents
Stepped arm tail and crane boom Download PDFInfo
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- CN216336286U CN216336286U CN202122590460.2U CN202122590460U CN216336286U CN 216336286 U CN216336286 U CN 216336286U CN 202122590460 U CN202122590460 U CN 202122590460U CN 216336286 U CN216336286 U CN 216336286U
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Abstract
The utility model discloses a stepped arm tail and a crane boom, which belong to the technical field of hoisting equipment structures and comprise a stepped packaging mechanism, an arm pin boss and a cylinder pin boss; the arm pin base is fixedly connected inside the stepped packaging mechanism, and the stepped arm tail and the knuckle arm are fixedly connected by matching with the arm pin; the cylinder pin base is fixedly connected inside the stepped packaging mechanism, and the distance from the front end face of the cylinder pin base to the center line of the arm pin base is greater than the distance from the rear end face of the cylinder pin base to the center line of the arm pin base; the structure of arm tail has been optimized, and guaranteeing that the festival arm can normally stretch out and draw back, under the unchangeable condition of each festival arm overlap joint ratio, effectively improved the lightweight level of jib loading boom, the cost is reduced.
Description
Technical Field
The utility model relates to a stepped arm tail and a crane arm, and belongs to the technical field of hoisting equipment structures.
Background
Currently, box-type arm telescopic mechanisms are mainly divided into two types: the oil cylinder is in a rope arrangement type or a bolt type; the cranes with five sections of arms and below mostly adopt oil cylinder rope type telescopic devices, and the bolt type cranes are mostly used for six sections of arms and more than six sections of arms.
The rope row type telescopic arm tail structure is provided with a pulley device, and the shape difference of the arm tail structure of each section of arm is large; bolt formula arm tail structure, except the arm tail of fixed festival arm, the arm tail structure of all the other each festival arms is all similar, and the difference is limited to the arrangement of arm tail size and slider position tightly.
The light weight of the crane boom structure is always the target of design optimization, the original bolt type boom tail structure also has a space for optimization and improvement, particularly, the bolt type crane boom is generally six-section boom or more, and the product performance is greatly limited if the weight of the crane boom is overlarge under the condition that the whole weight is not changed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a stepped arm tail and a crane boom, which optimize the structure of the arm tail, effectively improve the light weight level of the crane boom and reduce the cost under the condition of ensuring that the sections of the boom can normally stretch and retract and the lap joint ratio of each section of the boom is not changed.
In order to realize the purpose, the utility model is realized by adopting the following technical scheme:
in a first aspect, the utility model provides a stepped arm tail, comprising a stepped packaging mechanism, an arm pin boss and a cylinder pin boss; the arm pin base is fixedly connected inside the stepped packaging mechanism, and the stepped arm tail and the knuckle arm are fixedly connected by matching with the arm pin; the cylinder pin base is fixedly connected inside the stepped packaging mechanism, and the distance from the front end face of the cylinder pin base to the central line of the arm pin base is greater than the distance from the rear end face of the cylinder pin base to the central line of the arm pin base.
In combination with the first aspect, further, a cylinder pin hole and a cylinder pin are arranged on the cylinder pin seat, and the telescopic arm is achieved by matching with the oil cylinder.
With reference to the first aspect, further, the stepped packaging mechanism includes a front vertical plate, a rear vertical plate and a side vertical plate, the side vertical plate is stepped, and the side vertical plate is connected with the front vertical plate and the rear vertical plate, so as to package the arm pin boss and the cylinder pin boss.
With reference to the first aspect, the robot arm further comprises a detection mechanism, wherein the detection mechanism comprises a detector, a detection seat and a detection seat mounting plate, and the detector is arranged on the detection seat and used for sending a prompt when the position of the stepped arm tail reaches a set threshold value; detect a seat fixed connection on detecting a seat mounting panel, detect a seat mounting panel with notch cuttype packaging mechanism fixed connection.
With reference to the first aspect, further, the cylinder pin boss and the stepped packaging mechanism are fixedly connected through welding.
In a second aspect, the utility model further provides a crane boom, which includes the stepped boom tail of any one of the first aspects, and further includes a front arm section and a fixed arm section, and the stepped boom tail is connected with the front arm section and the fixed arm section to realize the extension and retraction of the crane boom.
Compared with the prior art, the utility model has the following beneficial effects:
according to the stepped arm tail and the crane arm, the stepped arm tail and the crane arm are packaged through the stepped packaging mechanism, compared with a box type in the prior art, the stepped arm tail is optimized in structure and light in weight, the distance from the front end face of the cylinder pin base to the center line of the arm pin base is larger than the distance from the rear end face of the cylinder pin base to the center line of the arm pin base, the stepped arm tail is formed by matching with the stepped packaging mechanism, the light weight level of the crane arm is effectively improved and the cost is reduced under the condition that normal extension of the sections of the arm is ensured and the lap joint ratio of each section of the arm is not changed.
Drawings
FIG. 1 is a partial structural cross-sectional view of a lift arm provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a stepped arm tail according to an embodiment of the present invention.
In the figure: 1-1, a front vertical plate; 1-2, a rear vertical plate; 2. an arm pin boss; 3. a cylinder pin boss; 4-1, detecting seat; 4-2, mounting a detection base plate; 5-1, installing a slideway plate; 5-2, mounting a sliding block; 5-3, a slide slider; 6. a stepped arm tail; 7. fixing a knuckle arm tail; 8. an arm pin; 9. an arm pin gland; 10. an arm pin bolt.
Detailed Description
The present invention is further described with reference to the accompanying drawings, and the following examples are only for clearly illustrating the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example one
The stepped arm tail 6 provided by the embodiment of the utility model comprises an arm pin base 2, a stepped packaging mechanism and a cylinder pin base 3, wherein the stepped packaging mechanism comprises a front vertical plate 1-1, a rear vertical plate 1-2 and a side vertical plate, and the arm pin base 2 and the cylinder pin base 3 are fixedly connected inside a frame body formed by mutually connecting the front vertical plate 1-1, the rear vertical plate 1-2 and the side vertical plate; the front vertical plate 1-1 is arranged in front of the arm pin base 2, namely the side of the stepped arm tail 6 close to the front arm part in the cargo boom, and the rear vertical plate 1-2 is arranged behind the arm pin base 2, namely the side of the stepped arm tail 6 close to the fixed arm tail 7 in the cargo boom.
In the embodiment of the utility model, the side vertical plates are designed into a step type on the basis of the original arm tail structure, the front vertical plate 1-1 can be of a single-plate structure or can be butted after being spliced, and the rear vertical plate 1-2 is designed into a bent plate or a spliced part, so that the whole arm tail structure is in a step shape, the light weight level of the arm tail is effectively improved and the cost is reduced under the condition of meeting the performance requirement; and the plate forming the stepped arm tail 6 can be additionally provided with lightening holes at different positions according to requirements, so that the weight of the stepped arm tail 6 is further lightened.
As shown in fig. 2, according to the difference of the thrust of the boom cylinder, based on the center line of the arm pin base 2, the cylinder pin base 3 is designed to be asymmetric, i.e., L1 is greater than L3, in fig. 2, L1 is the distance from the front end surface of the cylinder pin base 3/the front end surface of the arm pin base 2 to the center line of the arm pin base 2, L2 is the distance from the rear end surface of the arm pin base 2 to the center line of the arm pin base 2, and L3 is the distance from the rear end surface of the cylinder pin base 3 to the center line of the arm pin base 2, i.e., the part responsible for arm extension has greater strength than the part responsible for arm contraction; or a symmetrical offset structure (i.e., the center line of the cylinder pin boss 3 is located at the front section of the center line of the arm pin boss 2), i.e., the center of the cylinder pin boss 3 can be located at different positions based on the center of the arm pin, as long as the requirement that the distance from the front end surface of the cylinder pin boss 3 to the center line of the arm pin boss 2 is greater than the distance from the rear end surface of the cylinder pin boss 3 to the center line of the arm pin boss 2 is satisfied.
The stepped arm tail 6 further comprises a slide way mounting plate 5-1, a slide block mounting plate 5-2 and a detection seat mounting plate 4-2, wherein the slide way mounting plate 5-1 and the slide block mounting plate 5-2 are used for mounting a slide way slide block 5-3, the detection seat mounting plate 4-2 is used for mounting a detection seat 4-1, the detection seat 4-1 is used for mounting a detector, and the detector gives a prompt when the position of the stepped arm tail 6 reaches a set threshold value.
The stepped arm tail 6 provided by the utility model is mainly used for a bolt type crane arm and can cover the bolt type crane arm with an upper arm pin structure or a side arm pin structure; the stepped arm tail 6 provided by the utility model can effectively reduce the weight of the arm tail in the bolt type crane arm, and compared with the existing widely-adopted arm tail structure, the weight below the stepped arm tail 6 is smaller than that of the existing arm tail structure, and the more arm sections, the more obvious weight reduction effect is; the stepped arm tail 6 provided by the utility model is made of a material with light weight, the material cost of the whole arm tail is reduced, the overall cost of the crane arm can be further saved, and the purposes of cost reduction and efficiency improvement can be realized after the use scale is enlarged.
Example two
As shown in fig. 1, the boom provided by the utility model comprises a stepped boom tail 6 according to the first embodiment, and further comprises a front arm part and a fixed arm tail 7, wherein the stepped boom tail 6 is connected with the front arm part and the fixed arm tail 7 to realize the extension and retraction of the boom.
The stepped arm tail 6 comprises an arm pin base 2, a stepped packaging mechanism and a cylinder pin base 3, wherein the stepped packaging mechanism comprises a front vertical plate 1-1, a rear vertical plate 1-2 and a side vertical plate, and the arm pin base 2 and the cylinder pin base 3 are fixedly connected inside a frame body formed by mutually connecting the front vertical plate 1-1, the rear vertical plate 1-2 and the side vertical plate; the front vertical plate 1-1 is arranged in front of the arm pin base 2, namely the side of the stepped arm tail 6 close to the front arm part in the cargo boom, and the rear vertical plate 1-2 is arranged behind the arm pin base 2, namely the side of the stepped arm tail 6 close to the fixed arm tail 7 in the cargo boom.
The side vertical plates are designed into a step type on the basis of the original arm tail structure, the front vertical plate 1-1 can be of a single-plate structure or can be butted after being spliced, and the rear vertical plate 1-2 is designed into a bent plate or a spliced part, so that the whole arm tail structure is in a step shape, the light weight level of the arm tail is effectively improved and the cost is reduced under the condition of meeting the performance requirement; and the plate forming the stepped arm tail 6 can be additionally provided with lightening holes at different positions according to requirements, so that the weight of the stepped arm tail 6 is further lightened.
As shown in fig. 2, according to the difference of the thrust of the boom cylinder, based on the center line of the arm pin base 2, the cylinder pin base 3 is designed to be asymmetric, i.e., L1 is greater than L3, in fig. 2, L1 is the distance from the front end surface of the cylinder pin base 3/the front end surface of the arm pin base 2 to the center line of the arm pin base 2, L2 is the distance from the rear end surface of the arm pin base 2 to the center line of the arm pin base 2, and L3 is the distance from the rear end surface of the cylinder pin base 3 to the center line of the arm pin base 2, i.e., the part responsible for arm extension has greater strength than the part responsible for arm contraction; or a symmetrical offset structure (i.e., the center line of the cylinder pin boss 3 is located at the front section of the center line of the arm pin boss 2), i.e., the center of the cylinder pin boss 3 can be located at different positions based on the center of the arm pin, as long as the requirement that the distance from the front end surface of the cylinder pin boss 3 to the center line of the arm pin boss 2 is greater than the distance from the rear end surface of the cylinder pin boss 3 to the center line of the arm pin boss 2 is satisfied.
The stepped arm tail 6 further comprises a slide way mounting plate 5-1, a slide block mounting plate 5-2 and a detection seat mounting plate 4-2, wherein the slide way mounting plate 5-1 and the slide block mounting plate 5-2 are used for mounting a slide way slide block 5-3, the detection seat mounting plate 4-2 is used for mounting a detection seat 4-1, the detection seat 4-1 is used for mounting a detector, and the detector sends a prompt when the position of the stepped arm tail 6 reaches a set threshold value.
As shown in fig. 1, the boom provided by the utility model further comprises an arm pin 8, an arm pin gland 9 and an arm pin bolt 10, wherein the arm pin 8, the arm pin gland 9 and the arm pin bolt 10 are matched with the arm pin base 2 to realize the fixed connection of the front arm part and the stepped arm tail 6.
The crane boom further comprises a slide way sliding block 5-3, wherein the slide way sliding block 5-3 is arranged on a slide way mounting plate 5-1 and a sliding block mounting plate 5-2.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A stepped arm tail is characterized by comprising a stepped packaging mechanism, an arm pin base and a cylinder pin base; the arm pin base is fixedly connected inside the stepped packaging mechanism, and the stepped arm tail and the knuckle arm are fixedly connected by matching with the arm pin; the cylinder pin base is fixedly connected inside the stepped packaging mechanism, and the distance from the front end face of the cylinder pin base to the central line of the arm pin base is greater than the distance from the rear end face of the cylinder pin base to the central line of the arm pin base.
2. The stepped arm tail of claim 1, wherein the cylinder pin base is provided with a cylinder pin hole and a cylinder pin, and the extension and retraction of the knuckle arm are realized by matching with an oil cylinder.
3. The stepped arm tail according to claim 1, wherein the stepped packaging mechanism comprises a front vertical plate, a rear vertical plate and a side vertical plate, the side vertical plate is stepped, and the side vertical plate is connected with the front vertical plate and the rear vertical plate to package the arm pin base and the cylinder pin base.
4. The stepped arm tail according to claim 1, further comprising a detection mechanism, wherein the detection mechanism comprises a detector, a detection seat and a detection seat mounting plate, the detector is arranged on the detection seat and used for sending a prompt when the position of the stepped arm tail reaches a set threshold value; detect a seat fixed connection on detecting a seat mounting panel, detect a seat mounting panel with notch cuttype packaging mechanism fixed connection.
5. The stepped arm tail of claim 1, wherein the cylinder pin boss and the stepped packaging mechanism are fixedly attached by welding.
6. A crane boom, comprising a stepped arm tail according to any one of claims 1 to 5, further comprising a front arm part and a fixed arm tail, wherein the stepped arm tail connects the front arm part and the fixed arm tail to realize the extension and retraction of the crane boom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122590460.2U CN216336286U (en) | 2021-10-27 | 2021-10-27 | Stepped arm tail and crane boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122590460.2U CN216336286U (en) | 2021-10-27 | 2021-10-27 | Stepped arm tail and crane boom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216336286U true CN216336286U (en) | 2022-04-19 |
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ID=81130030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122590460.2U Active CN216336286U (en) | 2021-10-27 | 2021-10-27 | Stepped arm tail and crane boom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216336286U (en) |
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2021
- 2021-10-27 CN CN202122590460.2U patent/CN216336286U/en active Active
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