CN114408772A

CN114408772A - Crane boom for crane

Info

Publication number: CN114408772A
Application number: CN202210141418.9A
Authority: CN
Inventors: 丁志祥; 刘岩松
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-04-29

Abstract

The invention relates to the technical field of crane booms, in particular to a crane boom for a crane, which comprises a first boom section, wherein the rear side of the upper end of the first boom section is fixedly connected with a fixed seat, the upper end of the fixed seat is fixedly connected with a blower, the front end of the blower is fixedly connected with a pressurized air pipe, the front end of the pressurized air pipe is fixedly connected with a heating treatment box, the rear side inside the heating treatment box is provided with a heating chamber, and the inner side inside the heating chamber is fixedly connected with an electric heating pipe. According to the crane boom, heated high-pressure gas is sprayed out through the air spraying port at the front end of the first boom section, and can blow air towards the cleaning rods fixed on the two sides of the box body and the heating treatment box, so that the cleaning rods rotate to clean dust and gravel falling on the second boom section and the third boom section, and hot air is blown out to prevent moist soil from being adhered to the cleaning rods, so that abrasion of the dust and gravel and the moist soil to a sealing layer at the joint of the boom is reduced, and the service life of the sealing layer is prolonged.

Description

Crane boom for crane

Technical Field

The invention relates to the technical field of crane booms, in particular to a crane boom for a crane.

Background

The crane boom is commonly called as a boom and a suspension arm. A metal structural member for supporting the bidirectional bending of a lifting rope, a fetching device or a variable amplitude trolley. The connecting pin shaft, the steel wire rope or the hydraulic cylinder are supported on a rotary table or a tower body of the crane. For a cargo boom which can swing in a pitching way, the inclination angle of the cargo boom is changed by a luffing mechanism so as to change the amplitude and the lifting height of the crane; the horizontal crane arm is changed in amplitude by the amplitude-variable trolley moving back and forth on the horizontal crane arm. The truss type lifting device is divided into a truss lifting arm and a box lifting arm according to different structures; the device is divided into a movable arm of a crane, a main cargo boom, an auxiliary cargo boom, a telescopic boom, a folding boom, a goose head frame and the like according to different functions.

In the prior art, a sealing layer is arranged at the joint of each section of a crane boom to isolate external dust and gravel, however, when the crane boom for the crane is used in mine operation, too much gravel and moist soil are adhered to the surface of the crane boom, and the sealing layer is excessively abraded due to long-term accumulation, so that the service life is influenced.

Disclosure of Invention

The invention mainly aims to provide a crane boom, which can effectively solve the problem that the service life is influenced because a sealing layer is excessively abraded due to long-term accumulation of too much dust and moist soil adhered to the surface of the crane boom.

In order to achieve the purpose, the invention adopts the technical scheme that:

a hoisting arm for a crane comprises a first arm section, wherein a second arm section is sleeved at the front end of the first arm section, a third arm section is sleeved at the front end of the second arm section, a box body is fixedly connected with the sleeved part of the second arm section and the third arm section, a fixed seat is fixedly connected with the rear side of the upper end of the first arm section, an air blower is fixedly connected with the upper end of the fixed seat, a pressurized air pipe is fixedly connected with the front end of the air blower, a pipe support is attached to the lower side of the middle part of the pressurized air pipe, a heating treatment box is fixedly connected with the front end of the pressurized air pipe, a heating chamber is arranged on the rear side of the interior of the heating treatment box, an electric heating pipe is fixedly connected with the inner side of the heating chamber, a protective shell is fixedly connected with the inner side of the outer side of the electric heating pipe, a guide pipe is fixedly connected with the front end of the heating treatment box, and a pressurized chamber is arranged in the front end of the guide pipe, an air jet is arranged on the inner side of the front end of the pressurizing chamber.

Preferably, the pressurization tuber pipe is the tubular structure that rear end diameter is greater than the front end diameter, the upper end size of conduit saddle and the downside front end size looks adaptation of pressurization tuber pipe, the lower extreme of conduit saddle and the upper end fixed connection of first arm festival.

Preferably, heating process case fixed connection is in the front end of first arm festival, heating process case is hollow square tube structure, heating process case's the interior side surface and the front end outside fixed connection of first arm festival, heating process case top is equipped with two buckles and passes through bolt fixed connection, two extension springs of fixedly connected with on the buckle, two pressurized chambers intercommunication in heating process incasement portion below have two coils.

Preferably, the pressurized air pipes penetrate through the rear end of the heating treatment box and are communicated with the inside of the heating chamber, four groups of electric heating pipes and four groups of protective shells are arranged, and the four groups of electric heating pipes and the four groups of protective shells are fixedly connected to the inner side surfaces of the four groups of inner walls of the heating chamber respectively.

Preferably, the ducts are provided in four groups, and the four groups of ducts are uniformly provided around the center of the front end of the heating chamber.

Preferably, the air outlet is opened inside a front end of the compression chamber, and the air outlet is provided obliquely with respect to the front side of the compression chamber.

Preferably, the upper end of fixing base is laminated with the lower extreme of air-blower mutually, be provided with the bolt between air-blower and the fixing base, the air-blower passes through bolt and fixing base upper end fixed connection.

Preferably, the box is the same with the thermal treatment case outward appearance, and the box is inherent to be provided with same pressurized chamber and air jet in same position department, all fixedly connected with mounting panel around box and the thermal treatment case, the mounting panel rotates and is connected with the telescopic link, the telescopic link rotates and is connected with the cleaning rod.

Compared with the prior art, the invention has the following beneficial effects: the crane boom has the advantages that the blower can be fixed on the rear side of the upper end of the first boom section through the fixing seat, the blower and the electric heating tubes are started, air is input into the pressurizing air pipe through the blower, the air can be pressurized through the structure that the diameter of the rear end of the pressurizing air pipe is larger than that of the front end of the pressurizing air pipe, the flow rate of the air is faster, the pressurizing air pipe can be supported and fixed through the pipe support, the pressurizing air pipe cannot shake more stably, the pressurized air passes through the pressurizing air pipe and enters the heating chamber inside the heating treatment box, the air can be heated through four groups of electric heating tubes on the inner side of the inner wall of the heating chamber, the heated air enters the inside of the pressurizing chamber through the guide pipe, the air is accumulated inside the pressurizing chamber due to the small size of the air nozzle, the pressure of the air is increased again, and the air impact force sprayed by the air nozzle is larger, through coil pipe intercommunication thermal treatment case and box, and then make the high-pressure gas after the jet orifice blowout heating of thermal treatment case and box front end, can face and fix and blow at the box and the clean pole of thermal treatment case both sides, make clean pole rotatory, to rolling the dust grit that falls on second arm festival and third arm festival and clear up, can prevent through blowing off hot-blast moist earth from gluing on clean pole, thereby alleviate the wearing and tearing of dust grit and moist earth to the sealing layer of davit junction, the service life of sealing layer has been prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of a crane jib for a crane according to the present invention;

FIG. 2 is a schematic sectional view of a heating chamber of a crane jib according to the present invention;

FIG. 3 is a schematic side sectional view of a heat treatment box of a crane jib according to the present invention;

FIG. 4 is a front view of a heat treatment box of a crane jib according to the present invention.

In the figure: 1. a first arm section; 2. a second arm section; 3. a third arm section; 4. a fixed seat; 5. a blower; 6. pressurizing the air pipe; 7. a pipe bracket; 8. a heating treatment tank; 9. a heating chamber; 10. an electric heating tube; 11. a protective shell; 12. a conduit; 13. a pressurized chamber; 14. an air jet; 15. buckling; 16. a tension spring; 17. a telescopic rod; 18. a cleaning rod; 19. a coil pipe; 20. a box body; 21. and (7) mounting the plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in figures 1-4, a crane boom comprises a first boom section 1, a second boom section 2 is sleeved at the front end of the first boom section 1, a third boom section 3 is sleeved at the front end of the second boom section 2, a box body 20 is fixedly connected at the sleeved position of the second boom section 2 and the third boom section 3, a fixed seat 4 is fixedly connected at the rear side of the upper end of the first boom section 1, a blower 5 is fixedly connected at the upper end of the fixed seat 4, a pressurized air pipe 6 is fixedly connected at the front end of the blower 5, a pipe bracket 7 is attached to the lower side of the middle part of the pressurized air pipe 6, a heating treatment box 8 is fixedly connected at the front end of the pressurized air pipe 6, a heating chamber 9 is arranged at the rear side inside of the heating treatment box 8, an electric heating tube 10 is fixedly connected at the inner side of the heating chamber 9, a protective shell 11 is fixedly connected at the inner side of the outer side of the electric heating tube 10, and a guide pipe 12 is fixedly connected at the front end of the heating chamber 9, the front end of the duct 12 is provided with a pressurizing chamber 13 inside the heat treatment chamber 8, and an air outlet 14 is provided inside the front end of the pressurizing chamber 13.

The upper end of fixing base 4 is laminated with the lower extreme of air-blower 5 mutually, is provided with the bolt between air-blower 5 and the fixing base 4, and air-blower 5 passes through bolt and 4 upper ends fixed connection of fixing base.

In this embodiment, the pressurized air duct 6 is a tubular structure with a rear end diameter larger than a front end diameter, the upper end size of the duct support 7 is matched with the lower front end size of the pressurized air duct 6, and the lower end of the duct support 7 is fixedly connected with the upper end of the first arm section 1.

Heating treatment box 8 fixed connection is in the front end of first arm festival 1, and heating treatment box 8 is hollow square tube structure, and heating treatment box 8's the inboard surface and the front end outside fixed connection of first arm festival 1, heating treatment box 8 top are equipped with two buckles 15 and pass through bolt fixed connection, and two extension springs 16 of fixedly connected with on the buckle 15, two pressurized chambers 13 intercommunication in heating treatment box 8 inside below have two coil pipes 19.

The pressurizing air pipe 6 penetrates through the rear end of the heating treatment box 8 and is communicated with the inside of the heating chamber 9, four groups of electric heating pipes 10 and a protective shell 11 are arranged, and the four groups of electric heating pipes 10 and the protective shell 11 are respectively and fixedly connected to the inner side surfaces of the four groups of inner walls of the heating chamber 9.

The ducts 12 are provided in four groups in total, and the four groups of ducts 12 are evenly provided around the center of the front end of the heating chamber 9.

The air outlet 14 is opened inside the front end of the pressurizing chamber 13, and the air outlet 14 is provided obliquely with respect to the front side of the pressurizing chamber 13.

The appearance of the box body 20 is the same as that of the heating treatment box 8, the same pressurizing chamber 13 and the same air injection port 14 are arranged at the same position in the box body 20, the front and the back of the box body 20 and the heating treatment box 8 are fixedly connected with mounting plates 21, the mounting plates 21 are rotatably connected with telescopic rods 17, and the telescopic rods 17 are rotatably connected with cleaning rods 18.

Specifically, the blower 5 and the electric heating tube 10 are started, air is input into the pressurizing air pipe 6 through the blower 5, the air can be pressurized through the structure that the diameter of the rear end of the pressurizing air pipe 6 is larger than that of the front end, the flow rate of the air is faster, the pressurized air passes through the pressurizing air pipe 6 and enters the heating chamber 9 inside the heating treatment box 8, the air can be heated through the heat generated by the four groups of electric heating tubes 10 on the inner side of the inner wall of the heating chamber 9, the heated air enters the pressurizing chamber 13 through the conduit 12, the air is accumulated and pressed inside the pressurizing chamber 13 due to the small size of the air nozzle 14, the pressure of the air is increased again, the impact force of the air sprayed by the air nozzle 14 is larger, the heating treatment box 8 and the box body 20 are communicated through the coil 19, and the heated high-pressure air is sprayed out by the air nozzle 14 at the front ends of the heating treatment box 8 and the box body 20, can blow to fixing at the box 20 and the clean pole 18 of thermal treatment case 8 both sides for clean pole 18 is rotatory, to rolling down on second arm section 2 and third arm section 3 dust gravel and clear up, can prevent through blowing out hot-blast moist earth from gluing on clean pole 18, thereby alleviate the wearing and tearing of dust gravel and moist earth to the sealing layer of davit junction, prolonged the life of sealing layer.

It should be noted that, the invention is a crane jib, a user starts the blower 5 and the electric heating tube 10, the blower 5 inputs air into the pressurized air duct 6, the pressurized air duct 6 pressurizes the air, the pressurized air passes through the pressurized air duct 6 and enters the heating chamber 9 inside the heating processing box 8, the four groups of electric heating tubes 10 inside the inner wall of the heating chamber 9 generate heat to heat the air, the heated air enters the inside of the pressurized chamber 13 through the duct 12, because the size of the air nozzle 14 is smaller, the air is accumulated inside the pressurized chamber 13, the pressure of the air is increased again, the impact force of the air ejected from the air nozzle 14 is larger, the heating processing box 8 and the box body 20 are communicated through the coil 19, and the heated high-pressure air is ejected from the air nozzle 14 at the front ends of the heating processing box 8 and the box body 20, can blow to fixing at the box 20 and the clean pole 18 of thermal treatment case 8 both sides for clean pole 18 is rotatory, to rolling down on second arm section 2 and third arm section 3 dust gravel and clear up, can prevent through blowing out hot-blast moist earth from gluing on clean pole 18, thereby alleviate the wearing and tearing of dust gravel and moist earth to the sealing layer of davit junction, prolonged the life of sealing layer.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A crane jib for cranes, comprising a first jib portion (1), characterized in that: the front end of the first arm section (1) is sleeved with a second arm section (2), the front end of the second arm section (2) is sleeved with a third arm section (3), the sleeve joint of the second arm section (2) and the third arm section (3) is fixedly connected with a box body (20), the upper rear side of the first arm section (1) is fixedly connected with a fixing seat (4), the upper end of the fixing seat (4) is fixedly connected with a blower (5), the front end of the blower (5) is fixedly connected with a pressurized air pipe (6), a pipe support (7) is attached to the lower side of the middle of the pressurized air pipe (6), the front end of the pressurized air pipe (6) is fixedly connected with a heating treatment box (8), a heating chamber (9) is arranged on the rear side of the inside of the heating treatment box (8), an electric heating tube (10) is fixedly connected with the inner side of the heating chamber (9), and a protective shell (11) is fixedly connected with the inner side of the heating chamber (9) outside of the electric heating tube (10), the front end of the heating chamber (9) is fixedly connected with a conduit (12), a pressurizing chamber (13) is arranged in the front end heating treatment box (8) of the conduit (12), and an air jet (14) is arranged on the inner side of the front end of the pressurizing chamber (13).

2. A crane jib as defined in claim 1 wherein: pressurization tuber pipe (6) are the tubular structure that the rear end diameter is greater than the front end diameter, the upper end size of conduit saddle (7) and the downside front end size looks adaptation of pressurization tuber pipe (6), the lower extreme of conduit saddle (7) and the upper end fixed connection of first arm festival (1).

3. A crane jib as defined in claim 1 wherein: heating process case (8) fixed connection is in the front end of first arm festival (1), heating process case (8) are hollow square tube structure, the inboard surface of heating process case (8) and the front end outside fixed connection of first arm festival (1), heating process case (8) top is equipped with two buckle (15) and passes through bolt fixed connection, two extension springs (16) of fixedly connected with on buckle (15), two pressurized chamber (13) intercommunications in heating process case (8) inside below have two coil pipes (19).

4. A crane jib as defined in claim 1 wherein: the rear end of the pressurizing air pipe (6) penetrating through the heating treatment box (8) is communicated with the inside of the heating chamber (9), four groups of electric heating pipes (10) and four groups of protective shells (11) are arranged, and the four groups of electric heating pipes (10) and the four groups of protective shells (11) are respectively and fixedly connected to the inner side surfaces of the four groups of inner walls of the heating chamber (9).

5. A crane jib as defined in claim 1 wherein: the guide pipes (12) are arranged in four groups, and the four groups of guide pipes (12) are uniformly arranged around the center of the front end of the heating chamber (9).

6. A crane jib as defined in claim 1 wherein: the air outlet (14) is arranged on the inner side of the front end of the compression chamber (13), and the air outlet (14) is obliquely arranged relative to the front side of the compression chamber (13).

7. A crane jib as defined in claim 1 wherein: the box (20) is the same with heat treatment case (8) outward appearance, and box (20) inside same position department is provided with same pressurized chamber (13) and air jet (14), all fixedly connected with mounting panel (21) around box (20) and heat treatment case (8), mounting panel (21) rotate and are connected with telescopic link (17), telescopic link (17) rotate and are connected with cleaning rod (18).

8. A crane jib as defined in claim 1 wherein: the upper end of fixing base (4) is laminated with the lower extreme of air-blower (5), be provided with the bolt between air-blower (5) and fixing base (4), air-blower (5) pass through bolt and fixing base (4) upper end fixed connection.