CN220537377U - Abdominal auxiliary arm stepless amplitude changing device, crane arm assembly and crane - Google Patents

Abstract

The utility model discloses a stepless amplitude changing device of a belly auxiliary arm, a crane arm assembly and a crane, which comprise a first connecting part, a second connecting part and a telescopic part; the first connecting part is fixed on the top surface of the abdomen-placed auxiliary arm and is close to the auxiliary arm pulley; the second connecting part is hinged with a pair of pull plates which are opposite to each other; one end of the telescopic component is hinged with the first connecting component, the other end of the telescopic component is hinged with the second connecting component, and the telescopic component stretches to drive the first connecting component to move, so that stepless amplitude variation of the abdominal auxiliary arm is realized. According to the utility model, the amplitude of the abdomen-placed auxiliary arm is realized through the amplitude-changing oil cylinder, no operator is required to ascend in the whole process, the amplitude-changing efficiency of the abdomen-placed auxiliary arm is improved, and the use satisfaction of customers is increased.

Description

Abdominal auxiliary arm stepless amplitude changing device, crane arm assembly and crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a stepless amplitude changing device for a belly auxiliary arm.

Background

As one configuration of the sub-arm, the abdominal sub-arm 002 is fixed to the lower left or lower right side of the boom 001. The crane is suitable for long and narrow field operation, and effectively improves the working amplitude and lifting height of the crane (shown in figure 1). In order to meet the design requirements of different working conditions, the abdomen-placed auxiliary arm is designed with an amplitude variation function.

When the abdomen-mounted auxiliary arm works, the lower side of the suspension arm rotates to a working angle through the lower hinge point 003 of the suspension arm, a hoisting steel wire rope 004 is tensioned, the pull rod 100 is mounted to the upper hinge point 005 of the suspension arm, the steel wire rope penetrates through the suspension arm pulley 006, and the auxiliary arm pulley 007 can realize hoisting operation. The pull rod 100 is connected with the abdomen-placed auxiliary arm 002 through a connecting bracket 200 and a pull plate assembly 300, the connecting bracket 200 is used for connecting the two pull rods and the pull plate assembly 300, the pull plate assembly consists of a single pull plate 301 and a double pull plate 302, the single pull plate 301 and the double pull plate 302 are connected through a pin shaft 303, and the abdomen-placed auxiliary arm amplitude variation is completed through different shaft hole matching positions of the single pull plate and the double pull plate (as shown in fig. 2 and 3).

The initial angle of the abdomen-placed auxiliary arm is generally 5 degrees, the amplitude variation of 15 degrees and 30 degrees is realized through the cooperation of single and double pulling plates, and the amplitude variation process is as follows:

so that the steel wire rope is tensioned, the pin shaft 303 and the clamp are pulled out, the pin shaft 303 and the clamp are inserted into the middle pin hole, the steel wire rope is slowly released, and when the pin shaft 303 contacts with the limit hole on the single pulling plate 301, the release of the steel wire rope is stopped. At this time, the abdominal auxiliary arm is in a 15 ° working state (as shown in fig. 4).

The wire rope is slowly retracted, so that the wire rope is tensioned, and the pin shaft 303 and the clamp are pulled out. Slowly paying out the steel wire rope, and stopping paying out the steel wire rope when the pin shaft II 304 contacts with the limiting hole on the single pulling plate 301. At this time, the sub-arm is in a 30 ° state (as shown in fig. 5).

When the amplitude changing angle of the abdomen auxiliary arm is changed from 30 degrees to 15 degrees or 5 degrees, the process is opposite to the process, and the pin shaft is inserted into the corresponding shaft hole position to change amplitude.

When the existing amplitude-changing structure is used for amplitude changing, a main arm needs to be prone to be flat, an operator ascends to plug a pin shaft, amplitude changing efficiency is low, time and labor are wasted, and safety is low.

Disclosure of Invention

In order to improve the amplitude-changing efficiency of the abdomen-placed auxiliary arm and avoid the ascending operation of operators, a stepless amplitude-changing device of the abdomen-placed auxiliary arm is designed. The stepless amplitude changing device mainly comprises amplitude changing pull cylinders, pull rods, connecting supports, fixing supports and other parts, the hydraulic oil cylinder is in a pull cylinder stress mode, the amplitude changing angle of the auxiliary arm is switched through the extension and retraction of the oil cylinder, the structure is simple, the amplitude changing efficiency is high, the operation efficiency of a client is improved, and the satisfaction is improved.

The utility model is realized according to the following technical scheme:

in a first aspect, the utility model discloses an abdomen-placed auxiliary arm stepless amplitude changing device, which comprises a first connecting component, a second connecting component and a telescopic component; the first connecting part is fixed on the top surface of the abdomen-placed auxiliary arm and is close to the auxiliary arm pulley; the second connecting part is hinged with a pair of pull plates which are opposite to each other; one end of the telescopic component is hinged with the first connecting component, the other end of the telescopic component is hinged with the second connecting component, and the telescopic component stretches to drive the first connecting component to move, so that stepless amplitude variation of the abdominal auxiliary arm is realized.

In some embodiments, the telescopic component is an amplitude-variable cylinder, and when the amplitude-variable cylinder is fully contracted, the distance between the first connecting component and the hinge point on the suspension arm is the shortest, and the abdomen-placed auxiliary arm is in an amplitude-variable state of 5 degrees; the amplitude-variable pulling cylinder extends to the farthest distance, the distance between the first connecting part and the hinge point on the suspension arm is longest, and the abdomen-placed auxiliary arm is in an amplitude-variable state of 30 degrees.

In some embodiments, the fixed end of the luffing cylinder is hinged to the first connecting component, and the hinged end of the luffing cylinder is hinged to the second connecting component.

In some embodiments, the first connecting component is a dual-lug plate type fixing support, a pair of coaxial hinge holes are arranged in the fixing support, and the single lug plate of the telescopic component is inserted into the fixing support and hinged together through a pin shaft I.

In some embodiments, a pair of concentric mounting holes are further formed in the fixing support, a guide wheel with a guiding function on the steel wire rope is arranged in the fixing support located at the mounting holes, and the guide wheel is rotatably supported in the fixing support through a pin shaft IV.

In some embodiments, a circle of grooves extending along the circumferential direction are formed on the outer circumferential surface of the guide wheel, and the steel wire rope penetrates into the grooves.

In some embodiments, the second connecting component is a connecting bracket composed of a flat plate and two vertical plates symmetrically arranged at two sides of the flat plate; the flat plate is provided with a reaming hole, is inserted into the double-lug plate of the telescopic component, and is hinged together through a pin shaft II; the vertical plates are respectively provided with a coaxial reaming hole, are inserted into the double lug plates of the pull rod, and are hinged together through the pin shafts III.

In some embodiments, a roller is also provided between the two risers to prevent sagging of the wire rope from wearing the connecting bracket.

In a second aspect, the utility model discloses a boom assembly comprising a boom and a belly auxiliary boom fixed on the left lower side or the right lower side of the boom, wherein the belly auxiliary boom is provided with the belly auxiliary boom stepless amplitude changing device.

In a third aspect, the utility model discloses a crane, which is provided with the boom assembly.

Compared with the prior art, the utility model has the beneficial effects that:

1. the hydraulic cylinder stretches to realize stepless amplitude variation, so that the amplitude variation efficiency is high;

2. the pin shaft is not required to be inserted and pulled out by an operator in a ascending manner, so that the convenience of use is improved;

3. the hydraulic cylinder pulling amplitude-changing mode is adopted, and the structure is simple.

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 prior art abdominal auxiliary arm articulated state;

the attached drawings are identified: 001: a boom; 002: a ventral auxiliary arm is arranged; 003: and the suspension arm is hinged at the lower hinge point.

FIG. 2 is a prior art abdominal auxiliary arm in use;

the attached drawings are identified: 001: a boom; 002: a ventral auxiliary arm is arranged; 003: the lower hinge point of the suspension arm; 004: hoisting the steel wire rope; 005: a hinge point on the suspension arm; 006: a boom pulley; 007: an auxiliary arm pulley; 100: a pull rod; 200: a connecting bracket; 300: and the pulling plate assembly.

FIG. 3 is a 5℃amplitude variation state and a partial enlarged view of a ventral auxiliary arm of the prior art;

the attached drawings are identified: 001: a boom; 002: a ventral auxiliary arm is arranged; 100: a pull rod; 200: a connecting bracket; 301: a single pulling plate; 302: double pulling plates; 303: and a pin shaft.

FIG. 4 is a 15℃amplitude variation state and a partial enlarged view of a prior art abdominal auxiliary arm;

the attached drawings are identified: 001: a boom; 002: a ventral auxiliary arm is arranged; 100: a pull rod; 200: a connecting bracket; 301: a single pulling plate; 302: double pulling plates; 303: and a pin shaft.

FIG. 5 is a 30℃amplitude variation state and a partial enlarged view of a prior art abdominal auxiliary arm;

the attached drawings are identified: 001: a boom; 002: a ventral auxiliary arm is arranged; 100: a pull rod; 200: a connecting bracket; 301: a single pulling plate; 302: double pulling plates; 304: and a pin II.

FIG. 6 is an exploded view of the abdominal auxiliary arm stepless luffing device of the present utility model;

the attached drawings are identified: 100: a pull rod; 401: a variable amplitude pulling cylinder; 402: a connecting bracket; 403: a fixed bracket; 404: a pin I;405: a guide wheel; 406: a roller; 407: and a pin II.

FIG. 7 is an electrodeless amplitude variation 5 degree amplitude variation state and a partial enlarged view of the abdomen-placed auxiliary arm stepless amplitude variation device of the utility model;

the attached drawings are identified: 001: a boom; 002: a ventral auxiliary arm is arranged; 100: a pull rod; 401: and (5) pulling the cylinder in a variable amplitude manner.

FIG. 8 is an enlarged view of an electrodeless amplitude variation 30 degree amplitude variation state and a part of an abdomen-placed auxiliary arm stepless amplitude variation device;

the attached drawings are identified: 001: a boom; 002: a ventral auxiliary arm is arranged; 100: a pull rod; 401: and (5) pulling the cylinder in a variable amplitude manner.

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.

Description of the embodiments

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.

As shown in fig. 6, 7 and 8, the abdomen-placed auxiliary arm stepless amplitude changing device comprises a first connecting component, a second connecting component and a telescopic component; the first connecting part is fixed on the top surface of the abdomen-placed auxiliary arm 002 and is close to the auxiliary arm pulley; the second connecting member is hinged to a pair of pull plates 100 opposite to each other; one end of the telescopic component is hinged with the first connecting component, the other end of the telescopic component is hinged with the second connecting component, and the telescopic component stretches to drive the first connecting component to move, so that the stepless amplitude variation of the abdomen-placed auxiliary arm 002 is realized.

A preferred embodiment of the above embodiment with respect to the telescopic member is given below:

with continued reference to fig. 6, 7 and 8, the telescopic component is an amplitude-variable cylinder 401, and when the amplitude-variable cylinder 401 is fully contracted, the distance between the first connecting component and the hinge point on the suspension arm is the shortest, and the abdomen-placed auxiliary arm is in an amplitude-variable state of 5 degrees; the amplitude pulling cylinder 401 extends to the farthest distance, the distance between the first connecting part and the hinge point on the suspension arm is longest, and the abdomen auxiliary arm 002 is in an amplitude changing state of 30 degrees.

The preferable scheme is as follows: the fixed end of the amplitude-variable stretching cylinder 401 is hinged with the first connecting component, and the hinged end of the amplitude-variable stretching cylinder 401 is hinged with the second connecting component.

A preferred embodiment of the above embodiment with respect to the first connecting member is given below:

as shown in fig. 6, the first connecting member is a fixed bracket 403 of a binaural type, a pair of coaxial hinge holes are provided in the fixed bracket 403, and a single ear plate of the telescopic member is inserted into the fixed bracket 403 and hinged together by a pin i 404.

The further scheme is as follows: a pair of concentric mounting holes are further formed in the fixing support 403, a guide wheel 405 with a guiding function on the steel wire rope is arranged in the fixing support 403 located at the mounting holes, and the guide wheel 405 is rotatably supported in the fixing support 403 through a pin shaft IV.

The further scheme is as follows: the outer circumferential surface of the guide wheel 405 is provided with a circle of grooves extending along the circumferential direction, and the steel wire rope penetrates into the grooves.

A preferred embodiment of the above embodiment with respect to the second connecting member is given below:

as shown in fig. 6, the second connecting part is a connecting bracket 402 consisting of a flat plate and two vertical plates symmetrically arranged at both sides of the flat plate; the flat plate is provided with a reaming hole, the flat plate is inserted into the double-lug plate of the telescopic component, and the flat plate and the double-lug plate are hinged together through a pin roll II 407; the vertical plates are respectively provided with a coaxial reaming hole, are inserted into the double lug plates of the pull rod, and are hinged together through the pin shafts III.

The further scheme is as follows: also provided between the two risers is a roller 406 that prevents the wire rope from sagging and wearing the attachment bracket 402.

When the luffing cylinder 401 is fully contracted, the distance between the fixed bracket 403 and the hinge point on the suspension arm is the shortest, and the abdomen-placed auxiliary arm is in a luffing state of 5 degrees (as shown in fig. 7). As the amplitude-changing cylinder 401 extends, the distance between the fixed support 403 and the upper hinge point of the suspension arm becomes longer, the abdomen-placed auxiliary arm rotates around the lower hinge point of the suspension arm to realize amplitude changing, the amplitude-changing cylinder 401 extends to the farthest distance, and at the moment, the abdomen-placed auxiliary arm is in an amplitude changing state of 30 degrees (as shown in fig. 8). The expansion and contraction of the amplitude changing cylinder 401 can realize stepless amplitude changing of the auxiliary arm.

As shown in fig. 7 and 8, the utility model also discloses a crane arm assembly, which comprises a crane arm 001 and a belly auxiliary arm 002 fixed on the left lower side or the right lower side of the crane arm 001, wherein the belly auxiliary arm 002 is provided with the belly auxiliary arm stepless amplitude changing device.

The stepless amplitude changing device mainly comprises amplitude changing pull cylinders, pull rods, connecting supports, fixing supports and other parts, the hydraulic oil cylinder is in a pull cylinder stress mode, the amplitude changing angle of the auxiliary arm is switched through the extension and retraction of the oil cylinder, the structure is simple, the amplitude changing efficiency is high, the operation efficiency of a client is improved, and the satisfaction is improved.

It should be noted that, the boom: the device 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 cross section similar to a rectangular structure. 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 utility model also discloses a crane, and the crane arm assembly is installed.

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. An abdominal auxiliary arm stepless amplitude changing device is characterized by comprising:

the first connecting part is fixed on the top surface of the abdomen-placed auxiliary arm and is close to the auxiliary arm pulley;

a second connecting member hinged to a pair of pulling plates opposite to each other;

and one end of the telescopic component is hinged with the first connecting component, the other end of the telescopic component is hinged with the second connecting component, and the telescopic component stretches to drive the first connecting component to move, so that the stepless amplitude variation of the abdominal auxiliary arm is realized.

2. The abdominal auxiliary arm stepless amplitude changing device according to claim 1, wherein:

the telescopic component is an amplitude-variable cylinder, when the amplitude-variable cylinder is fully contracted, the distance between the first connecting component and the hinge point on the suspension arm is shortest, and the abdomen-placed auxiliary arm is in an amplitude-variable state of 5 degrees; the amplitude-variable pulling cylinder extends to the farthest distance, the distance between the first connecting part and the hinge point on the suspension arm is longest, and the abdomen-placed auxiliary arm is in an amplitude-variable state of 30 degrees.

3. The abdominal auxiliary arm stepless amplitude changing device according to claim 2, wherein:

the fixed end of the amplitude changing drawing cylinder is hinged with the first connecting component, and the hinged end of the amplitude changing drawing cylinder is hinged with the second connecting component.

4. The abdominal auxiliary arm stepless amplitude changing device according to claim 1, wherein:

the first connecting part is a double-lug plate type fixing support, a pair of coaxial reaming holes are formed in the fixing support, and the single-lug plate of the telescopic part is inserted into the fixing support and hinged with the fixing support through a pin shaft I.

5. The stepless amplitude changing device for the abdominal auxiliary arm according to claim 4, wherein:

the fixing support is also provided with a pair of concentric mounting holes, a guide wheel with a guiding function on the steel wire rope is arranged in the fixing support at the mounting holes, and the guide wheel is rotatably supported in the fixing support through a pin shaft IV.

6. The abdominal auxiliary arm stepless amplitude changing device according to claim 5, wherein:

the periphery of the guide wheel is provided with a circle of grooves extending along the circumferential direction, and the steel wire ropes penetrate into the grooves.

7. The abdominal auxiliary arm stepless amplitude changing device according to claim 1, wherein:

the second connecting part is a connecting bracket consisting of a flat plate and two vertical plates symmetrically arranged at two sides of the flat plate;

the flat plate is provided with a reaming hole, is inserted into the double-lug plate of the telescopic component, and is hinged together through a pin shaft II;

the vertical plates are respectively provided with a coaxial reaming hole, are inserted into the double lug plates of the pull rod, and are hinged together through the pin shafts III.

8. The abdominal auxiliary arm stepless amplitude changing device according to claim 7, wherein:

and a roller wheel for preventing the steel wire rope from sagging and wearing the connecting bracket is also arranged between the two vertical plates.

9. The utility model provides a jib loading boom subassembly, includes the jib loading boom and is fixed in the abdomen of jib loading boom left downside or right downside and put the accessory arm, its characterized in that:

a stepless amplitude variation device for the abdomen-placed auxiliary arm according to any one of claims 1 to 8 is arranged on the abdomen-placed auxiliary arm.

10. A crane, characterized in that:

a boom assembly as claimed in claim 9 is mounted.