CN112919342A

CN112919342A - Novel foldable auxiliary arm structure and automobile crane

Info

Publication number: CN112919342A
Application number: CN202110215562.8A
Authority: CN
Inventors: 王建军; 米成宏; 郭耀松; 王科伟; 赵玉香; 王福利
Original assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Current assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-06-08

Abstract

The invention discloses a novel folding type auxiliary arm structure and an automobile crane. The structure can expand the working range of the auxiliary arm and improve the function. In addition, an auxiliary butt joint structure is further arranged on the auxiliary arm structure, and butt joint of the main body structure I and the main body structure II is facilitated. The intermediate connector and the main body structure I can be subjected to angle adjustment through the angle changing structure.

Description

Novel foldable auxiliary arm structure and automobile crane

Technical Field

The invention relates to the technical field of automobile cranes, in particular to a novel folding type auxiliary arm structure and an automobile crane.

Background

The crane boom of the truck crane generally comprises a main boom and an auxiliary boom, wherein the main boom mainly realizes the operation of large load, and the auxiliary boom generally realizes the operation of high lifting, large amplitude and small load. At present, the auxiliary arm of a product with the weight of less than 30 tons is generally in a triangular section structure, the main structure of the auxiliary arm is a section, and the length of the arm is generally short due to the space of the crane structure, so that the space operation function of the auxiliary arm is limited to a certain extent and the performance of the whole crane cannot be fully exerted.

Disclosure of Invention

The invention aims to provide a novel folding type auxiliary arm structure and an automobile crane, so that the auxiliary arm can be lengthened to enlarge the working range, can be folded when not used, and cannot cause interference to other equipment.

In order to achieve the purpose, the novel folding type auxiliary arm structure comprises a first main structure and a second main structure, wherein the first main structure is connected with the second main structure through a pin shaft, the second main structure can be folded to the bottom of the first main structure, and when the folding type auxiliary arm structure is folded, the front end of the second main structure is connected and fixed with the first main structure through a fixing structure.

Further, the auxiliary butt joint mechanism comprises a rope guide pulley, a first pulling plate, a second pulling plate and a lifting rope, wherein the rope guide pulley is installed on the first main body structure, the first pulling plate is fixedly arranged on the second main body structure, and the second pulling plate is fixedly arranged at the front end of the second main body structure.

Further, the rope guide pulley comprises a pulley mounting plate and a pulley mounting seat, the pulley mounting plate is connected with the pulley mounting seat through a pin shaft, and a downward fixing hole and a supporting fixing hole are formed in the pulley mounting seat.

Furthermore, an intermediate connector is arranged at the rear end of the main body structure I, the rear end of the intermediate connector is detachably connected with the front end of the main arm, the lower part of the front end of the intermediate connector is connected with the main body structure I through a pin shaft, and the upper part of the front end of the intermediate connector is connected with the main body structure I through a variable angle structure.

Further, the angle changing structure comprises an angle changing connecting rod and an angle changing connecting seat, and the angle changing connecting rod is connected with the angle changing connecting seat through a pin shaft.

Furthermore, a row of connecting holes are formed in the angle-variable connecting seat.

Furthermore, the fixed knot constructs including folding connecting rod and folding connecting seat, the connecting rod is fixed set up in on the major structure one, folding connecting seat fixed set up in the front end of major structure two, folding connecting rod and folding connecting seat pass through the round pin hub connection.

The invention also discloses an automobile crane which comprises the novel folding type auxiliary arm structure.

The invention has the beneficial effects that: through dividing holistic fly jib into main part structure one and main part structure two, two structures can fold when the hoist is out of work and accomodate, and its advantage can be with original fly jib extension like this, can enlarge its working range, can shorten the fly jib again when out of work to can not interfere other equipment. In addition, the auxiliary butt joint mechanism is arranged, so that the second main structure is easier to butt joint with the first main structure. The angle-variable structure is arranged, so that the working angle of the two main body structures relative to the first main body structure can be adjusted, and the working convenience is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2a is a diagram of the connection process of the main arm and the main structure I of the auxiliary arm;

FIG. 2b is a connection completion diagram of the main structure I of the main arm and the auxiliary arm;

FIG. 3a is a schematic view of the cord guide pulley received within an interior portion of the body structure;

FIG. 3b is a schematic view of the cord guide sheave when riding up;

FIG. 4 is a schematic view of the configuration of the cord guide pulley;

FIG. 5 is a schematic structural view of a first pulling plate on a first main body structure;

FIG. 6a is a process diagram of the docking of a first body structure with a second body structure;

FIG. 6b is a completed view of the first body structure mated with the second body structure;

FIG. 7 is a schematic view of a variable angle configuration;

FIG. 8 is a schematic view of the connection seat in a variable angle configuration;

FIG. 9 is a schematic view of a web in a variable angle configuration;

in the figure, 1-a main body structure I, 2-a main body structure II, 3-a fixed structure, 4-a rope guide pulley, 41-a pulley mounting plate, 42-a pulley mounting seat, 42-1-a downward-placing fixed hole, 42-2-a supporting fixed hole, 5-a pulling plate I, 6-a pulling plate II, 7-a lifting rope, 8-an intermediate connecting body, 9-a main arm, 10-a variable angle structure, 101-a variable angle connecting rod, 102-a variable angle connecting seat, 102-a connecting hole, 11-a guide pulley and 12-an auxiliary pulley.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1, a novel folding type auxiliary arm structure comprises a first main structure 1 and a second main structure 2, wherein the first main structure 1 is connected with the second main structure 2 through a pin, the second main structure 2 can be folded to the bottom of the first main structure 1, and when the folding type auxiliary arm structure is folded, the front end of the second main structure 2 is connected and fixed with the first main structure 1 through a fixing structure 3. This configuration allows the range of operation of the secondary arm to be extended by a factor of about one longer than previous secondary arms. And does not occupy too much space when the crane does not work.

As shown in fig. 5, 6a and 6b, the auxiliary jib is further provided with an auxiliary docking mechanism, and when the crane works, the auxiliary main body structure 1 and the main body structure II perform docking operation. The auxiliary butt-joint mechanism comprises a guide rope pulley 4, a first pulling plate 5, a second pulling plate 6 and a lifting rope 7, wherein the guide rope pulley 4 is installed on the first main structure 1, the first pulling plate 5 is fixedly arranged on the second main structure 2, and the second pulling plate 6 is fixedly arranged at the front end of the second main structure 2. The hoisting rope 7 is pulled by the winch, so that the main body structure II 2 can be easily butted.

As shown in fig. 4, the rope guiding pulley 4 includes a pulley mounting plate 41 and a pulley mounting seat 42, the pulley mounting plate 41 is connected to the pulley mounting seat 42 by a pin, and the pulley mounting seat 42 is provided with a lowering fixing hole 42-1 and a supporting fixing hole 42-2.

The structure enables the rope guide pulley 4 to rotate 180 degrees to be supported, and when the rope guide pulley 4 is not used, the rope guide pulley is placed in the main structure I1, so that other equipment cannot be interfered, and the rope guide pulley 4 can be effectively protected, as shown in figures 3a and 3 b.

As shown in fig. 2, the rear end of the main body structure i 1 is provided with an intermediate connector 8, the rear end of the intermediate connector 8 is connected with the front end of the main arm 9 through a pin, the lower part of the front end of the intermediate connector 8 is connected with the main body structure i 1 through a pin, and the upper part of the front end is connected through an angle-changing structure 10.

As shown in fig. 7-9, the angle-changing structure 10 includes an angle-changing connecting rod 101 and an angle-changing connecting seat 102, and the angle-changing connecting rod 101 and the angle-changing connecting seat 102 are connected by a pin. The angle-variable connecting base 102 is provided with a row of connecting holes 102-1. An auxiliary pulley 12 is arranged above the angle-changing connecting seat 102. The angle between the main body structure II 2 and the main body structure I1 can be adjusted when the main body structure II works, and the angle can be adjusted only by connecting the angle-variable connecting rod 101 on different connecting holes 102-1 through a pin shaft.

Specifically, fixed knot constructs 3 including folding connecting rod and folding connecting seat, and the connecting rod is fixed to be set up on major structure one 1, and folding connecting seat is fixed to be set up in the front end of major structure two 2, and folding connecting rod and folding connecting seat pass through the round pin hub connection.

The working principle of the folding type auxiliary arm structure is as follows: the secondary arm is rotated from the side of the primary arm 9 to the head and connected as shown in figures 2a, 2 b. The auxiliary boom is made to a certain angle through downward amplitude change, the rope guide pulley 4 is rotated by 180 degrees to be supported, the lifting rope 7 bypasses the rope guide pulley 4 and is fixed on the pulling plate I5 on the main structure II 2, the connecting pin shaft of the main structure I1 and the main structure II 2 is detached, the main structure II 2 is slowly lowered through the lifting rope 7, and meanwhile, the main structure I1 is lifted upwards through upward amplitude change to enable the main structure II 2 to rotate previously. After main structure two 2 is rotatory to cross the perpendicular line, pull down and play to rise 7 tip rope wedges of rope, the supplementary main structure two 2 that continue to rotate forward of manpower, become the width of cloth downwards simultaneously and make main structure one 1 become the angle arm of lying prone downwards, after main structure one 1 and two 2 upper chord hinge point holes of main structure align, insert the connection of two sections main structure of round pin axle completion. The upward angle change of the main structure II 2 can be completed by the aid of the lifting rope 7 to align hinge point holes, namely, the lifting rope 7 bypasses a guide pulley at the end part of the main structure II 2, a rope wedge is fixed on a pulling plate II6, the main structure II 2 is lifted by the aid of a traction steel wire rope, the angle change structure 10 is adjusted to a corresponding angle change position, the auxiliary pulley 12 is lifted and connected and fixed, the lifting rope 7 penetrates through the auxiliary pulley 12, the arm head guide pulley 11 is fixed with a lifting hook, and the installation preparation work of the auxiliary arm is completed.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes which can be made within the knowledge of those skilled in the art without departing from the gist of the present invention are within the scope of the claims of the present invention.

Claims

1. The utility model provides a novel foldable auxiliary arm structure which characterized in that: including major structure one (1) and major structure two (2), major structure one (1) with major structure two (2) are through round pin hub connection, major structure two (2) can be folded to major structure one (1) bottom, during folding, the front end of major structure two (2) with major structure one (1) is connected fixedly through fixed knot structure (3).

2. The novel folding type auxiliary arm structure as claimed in claim 1, wherein: still include supplementary docking mechanism, supplementary docking mechanism includes rope guide pulley (4), arm-tie (5), arm-tie two (6), plays to rise rope (7), rope guide pulley (4) are installed on major structure (1), arm-tie (5) fixed set up in on major structure two (2), arm-tie two (6) fixed set up in the front end of major structure two (2).

3. The novel folding type auxiliary arm structure as claimed in claim 2, wherein: the rope guide pulley (4) comprises a pulley mounting plate (41) and a pulley mounting seat (42), the pulley mounting plate (41) is connected with the pulley mounting seat (42) through a pin shaft, and a downward fixing hole (42-1) and a supporting fixing hole (42-2) are formed in the pulley mounting seat (42).

4. The novel folding type auxiliary arm structure as claimed in claim 1, wherein: the rear end of the main body structure I (1) is provided with an intermediate connector (8), the rear end of the intermediate connector (8) is detachably connected with the front end of the main arm (9), the lower part of the front end of the intermediate connector (8) is connected with the main body structure I (1) through a pin shaft, and the upper part of the front end is connected through a variable angle structure (10).

5. The novel folding type auxiliary arm structure as claimed in claim 4, wherein: the variable angle structure (10) comprises a variable angle connecting rod (101) and a variable angle connecting seat (102), and the variable angle connecting rod (101) is connected with the variable angle connecting seat (102) through a pin shaft.

6. The novel folding type auxiliary arm structure as claimed in claim 5, wherein: the angle-variable connecting seat (102) is provided with a row of connecting holes (102-1).

7. The novel folding type auxiliary arm structure as claimed in claim 1, wherein: the fixing structure (3) comprises a folding connecting rod and a folding connecting seat, the connecting rod is fixedly arranged on the main structure I (1), the folding connecting seat is fixedly arranged at the front end of the main structure II (2), and the folding connecting rod is connected with the folding connecting seat through a pin shaft.

8. An automobile crane is characterized in that: comprising a novel folding sub-arm structure according to any of the preceding claims 1-7.