Furnace cleaning mechanical arm

Abstract

The utility model belongs to the technical field of metallurgical machinery, and discloses a furnace cleaning mechanical arm which comprises a driving motor (1), a slewing bearing (2), a main arm (3), a first-stage telescopic arm (4), a second-stage arm extending chain assembly (5), a second-stage telescopic arm (6) and a slag cleaning shovel (7). An inner ring of the slewing bearing (2) is fixedly connected with the bracket (13), an outer ring of the slewing bearing (2) is fixedly connected with the main arm (3), and the inner ring and the outer ring of the slewing bearing (2) are rotationally connected; the driving motor (1) is fixed at the rear end of the main arm; a chain wheel is arranged on an output shaft of the driving motor (1), the primary telescopic arm (4) is connected with the main arm (3) in a sliding mode, and the primary arm telescopic chain assembly (11) is meshed with the chain wheel on the output shaft of the driving motor (1). The anti-torsion rotary shaft not only has strong anti-torsion performance, but also can rotate positively and negatively by 360 degrees, can remove furnace slag of a furnace, and meets the requirements of furnace cleaning operation at different angles.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical machinery, and in particular relates to a furnace cleaning mechanical arm. Background Art

[0002] The furnace cleaning robot arm used in the metallurgical industry is mainly used to remove slag from the furnace for smelting aluminum alloys. At present, most of the forklifts in front of the smelting furnace are modified, with low work efficiency, short service life of the front-end tools, and cannot be used for a long time. The temperature in front of the furnace is high, and the heat radiation causes serious damage to the operators. At present, the robot arms used for furnace cleaning in front of the furnace are all square structures with poor torsion resistance. In terms of function, they only have the telescopic function for removing the slag at the bottom of the furnace, and the robot arm has no rotation function and cannot remove the slag in the furnace. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing furnace cleaning mechanical arm has poor torsion resistance and cannot clean the furnace slag.

[0004] In order to solve the above technical problems, the specific technical solutions of the utility model are as follows:

[0005] A furnace cleaning mechanical arm comprises a driving motor 1, a slewing bearing 2, a main arm 3, a primary telescopic arm 4, a secondary arm extension chain assembly 5, a secondary telescopic arm 6, a slag cleaning shovel 7, a secondary arm retracting chain assembly 9, a primary arm telescopic chain assembly 11, a reducer 12, and a bracket 13;

[0006] The inner ring of the slewing bearing 2 is fixedly connected to the bracket 13, and the outer ring is fixedly connected to the main arm 3, and the inner ring is rotatably connected to the outer ring; the driving motor 1 is fixed to the rear end of the main arm; a sprocket is provided on the output shaft of the driving motor 1, the primary telescopic arm 4 is slidably connected to the main arm 3, and the primary arm telescopic chain assembly 11 is meshed with the sprocket on the output shaft of the driving motor 1; the primary telescopic arm 4 is connected to the primary arm telescopic chain assembly 11; the secondary telescopic arm 6 is slidably connected to the primary telescopic arm 4;

[0007] The secondary arm extension chain assembly 5 includes an extension sprocket and an extension chain, the extension sprocket is fixed to the front end of the primary arm, one end of the extension chain is fixed to the rear end of the main arm, and the other end is fixed to the rear end of the secondary arm;

[0008] The secondary arm retracting chain assembly 9 includes a retracting sprocket and a retracting chain, wherein the retracting sprocket is fixed at the rear end of the primary arm, and one end of the retracting chain is fixed at the rear end of the secondary arm and the other end is fixed at the front end of the main arm;

[0009] The reducer 12 is connected to the outer ring of the slewing bearing 2; a slag cleaning shovel 7 is arranged at the front end of the secondary telescopic arm.

[0010] Furthermore, when the primary arm is extended, the extension sprocket at the front end is forced to rotate and move forward, thereby driving the secondary arm to move forward, that is, the primary arm and the secondary arm move forward and extend at the same time.

[0011] Furthermore, when the primary arm is retracted, the retraction sprocket is forced to rotate, thereby driving the secondary arm to retract, that is, the primary arm and the secondary arm move backward and retract at the same time.

[0012] Furthermore, the reducer is an integrated structure of a reduction motor and a reducer.

[0013] Furthermore, the main arm and the primary arm, and the primary arm and the secondary arm are slidably connected via a roller assembly 8.

[0014] Furthermore, the cross-section of the main arm is a triangular structure, and the side plates and the bottom plate are welded to three steel pipes, and the three steel pipes are arranged in an equilateral triangle; a flange connected to the slewing bearing is welded to the rear middle part of the outer side of the main arm; mounting seats for installing the hydraulic motor are welded on the left and right sides of the rear end; two rows of roller assembly support plates for the sliding of the first-level telescopic arm are arranged at the front end.

[0015] Furthermore, the first-level telescopic arm is located between the main arm and the second-level telescopic arm, and the cross-sectional structure of the first-level telescopic arm is the same as that of the main arm, which is also a triangular structure; a sprocket assembly for the telescopic action of the second-level telescopic arm is installed at the middle position at the rear end of the base plate of the first-level telescopic arm; a sprocket assembly for the telescopic action of the second-level telescopic arm is installed at the rear end of the two side plates of the first-level telescopic arm, and two rows of roller assembly support plates for the sliding of the second-level telescopic arm are arranged at the front end.

[0016] The utility model has the following advantages: it is a three-section mechanical arm, the main arm is a fixed arm, the first-level arm and the second-level arm are telescopic arms, and the telescopic movement adopts a chain transmission form, which can meet the working requirements under the high-temperature environment of the furnace; the cross-section of the furnace cleaning mechanical arm is a triangular structure with strong torsion resistance; the supporting structure of the telescopic arm is a roller eccentric shaft support form, which not only has small friction during the telescopic process, but also can adjust the degree of compression of the telescopic arm.

[0017] Driven by the drive motor, the primary arm and the secondary arm can extend and retract at the same time; the main arm can rotate 360° driven by the reducer, thereby driving the overall rotation of the robotic arm to meet the slag cleaning operation needs of the slag shovel at different angles on the furnace wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the furnace cleaning mechanical arm of the utility model;

[0019] Figure 2 This is a cross-sectional view of the furnace cleaning mechanical arm of the utility model;

[0020] Markings in the figure: 1-drive motor, 2-slewing bearing, 3-main arm, 4-first-stage telescopic arm, 5-second-stage arm extension chain assembly, 6-second-stage telescopic arm, 7-slag cleaning shovel, 8-roller assembly, 9-second-stage arm retracting chain assembly, 10-sprocket assembly, 11-first-stage arm telescopic chain assembly, 12-reducer, 13-bracket. DETAILED DESCRIPTION

[0021] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-Figure 2 As shown, the furnace cleaning mechanical arm of the utility model includes the following parts: a driving motor 1, a slewing bearing 2, a main arm 3, a primary telescopic arm 4, a secondary arm extension chain assembly 5, a secondary telescopic arm 6, a slag cleaning shovel 7, a roller assembly 8, a secondary arm retracting chain assembly 9, a sprocket assembly 10, a primary arm telescopic chain assembly 11, a reducer 12, and a bracket 13.

[0023] in:

[0024] (1) Driving motor: The driving motor is a hydraulic driving motor, which is arranged on the left and right mounting plates at the rear end of the main arm. A sprocket is installed on the output shaft of the hydraulic motor. As the driving motor runs, the sprocket rotates, thereby driving the chain transmission to make the primary arm extend and retract.

[0025] (2) Slewing bearing: the inner ring of the slewing bearing is connected to the bracket, and the outer ring is connected to the main arm. The inner ring is fixedly connected to the bracket. The outer ring rotates under the drive of the reducer, thereby driving the main arm to rotate.

[0026] (3) Main arm: The cross section of the main arm is a triangular structure. The side plates and the bottom plate are welded to three steel pipes, which are arranged in an equilateral triangle. A flange connected to the slewing bearing is welded to the rear middle of the outer side of the main arm. Mounting seats for installing hydraulic motors are welded on the left and right sides of the rear end. Two rows of roller assembly support plates for the sliding of the first-stage telescopic arm are arranged at the front end.

[0027] (4) A first-stage telescopic arm, which is located between the main arm and the second-stage telescopic arm. The cross-sectional structure of the first-stage telescopic arm is the same as that of the main arm, which is also a triangular structure. A sprocket assembly for the telescopic function of the second-stage telescopic arm is installed at the middle position at the rear end of the bottom plate of the first-stage telescopic arm. A sprocket assembly for the telescopic function of the second-stage telescopic arm is installed at the rear end of both side plates of the first-stage telescopic arm, and two rows of roller assembly support plates for the sliding of the second-stage telescopic arm are arranged at the front end.

[0028] (5) The secondary arm extends out of the chain assembly, which is distributed on the left and right inner sides of the primary arm. The sprocket in the chain assembly is fixed on the inner side of the front end of the primary arm. Both ends of the chain are fixed, one end is fixed to the rear end plate of the main arm, and the other end is fixed to the left and right sides of the rear end of the secondary arm. When the primary arm is extended, the front end sprocket is forced to rotate and move forward, thereby driving the secondary arm to move forward, that is, the primary arm and the secondary arm move forward and extend at the same time.

[0029] (6) Secondary telescopic arm: The secondary telescopic arm is the frontmost working arm. Its overall cross-sectional structure is a triangular structure like the main arm. The front end is connected to a slag shovel, and chain fixing blocks are arranged in the middle and on both sides of the rear end.

[0030] (7) The slag cleaning shovel is a combined structure. The slag cleaning shovel bracket is connected to the secondary telescopic arm by bolts. The shovel surface and the slag cleaning shovel bracket can be configured with slag cleaning tools of different shapes, sizes and functions according to actual use requirements.

[0031] (8) Roller assembly: The roller assembly consists of double wheels, a wheel frame, and an eccentric shaft. The eccentric structure design of the eccentric shaft is used to adjust the relative position of the three-section arm.

[0032] (9) Secondary arm retraction chain assembly: The secondary arm retraction sprocket is fixed at the rear end of the primary arm. One end of the chain is fixed at the middle position of the rear end of the secondary arm, and the other end is fixed at the front end of the main arm bottom plate. When the primary arm is retracted, the sprocket is forced to rotate, thereby driving the secondary arm to retract, that is, the primary arm and the secondary arm move backward and retract at the same time.

[0033] (10) Sprocket assembly: The sprocket assembly is mainly composed of a sprocket, a key, a bearing, and an end cover. The sprocket assembly plays a transmission role in the extension and retraction of the two-stage telescopic arm.

[0034] (11) Primary arm telescopic chain assembly: The primary arm telescopic chain assembly is used to drive the primary telescopic arm to extend and retract. Both ends of the chain are fixed to the fixed block at the rear end of the primary telescopic arm. The front sprocket is fixed to the inner side of the front end of the main arm, and the rear sprocket is fixed to the inner side of the rear end of the main arm. It is connected to the drive motor to provide transmission power.

[0035] (12) Reducer: The reducer is an integrated structure of a reduction motor and a reducer, which is used to drive the slewing bearing to rotate, thereby rotating the main arm.

[0036] (13) Bracket: The bracket is used to fix the reducer, slewing bearing, and articulate with the platform and connect with the cylinder. The bracket is a welded structure.

[0037] The connection relationship between the above components is:

[0038] The bracket is equipped with a slewing bearing fixing flange and a reducer. The slewing reducer is meshed with the gears of the rotating part of the slewing bearing. The rotation of the slewing reducer drives the slewing bearing to rotate. The main arm is fixedly connected to the rotating part of the slewing bearing and rotates with the rotation of the slewing bearing.

[0039] The main arm, the first-stage telescopic arm and the second-stage telescopic arm are connected by supporting rollers and a chain transmission device.

[0040] Two rows of roller assemblies supporting the first telescopic arm are installed on the lower bottom plate and the upper steel pipe at the front end of the main arm, and sprockets are installed at the front and rear of the two side plates inside. The rear sprocket is equipped with a hydraulic motor, and the chain is driven around the sprocket. Both ends of the chain are fixed to the rear end fixed block of the first telescopic arm. The sprocket chain combination realizes the retraction and extension function of the first telescopic arm under the drive of the hydraulic motor.

[0041] Two rows of roller assemblies supporting the secondary telescopic arm are respectively installed on the lower base plate and the upper steel pipe at the front end of the first telescopic arm, and sprockets are installed on the two side plates at the internal front end. The chain is driven around the sprocket, and one end of the chain is fixed on the fixed block at the rear end of the secondary telescopic arm, and the other end is fixed on the fixed block at the rear end of the main arm. The sprocket and chain combination can realize the extension function of the secondary telescopic arm as the first telescopic arm is extended; a sprocket is installed in the middle of the lower part of the rear end of the first telescopic arm, and the chain is driven around the sprocket, and one end of the chain is fixed on the fixed block at the rear end of the secondary telescopic arm, and the other end is fixed on the fixed block at the front end of the main arm. The sprocket and chain combination can realize the retraction function of the secondary telescopic arm as the first telescopic arm is retracted.

[0042] The overall arrangement of the telescopic chain inside the robotic arm is a symmetrical structure, and the hydraulic motor operates synchronously to make the arm evenly stressed during the extension and retraction process.

[0043] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make several modifications and improvements without departing from the principle of the present invention, and these modifications and improvements should also be considered to belong to the protection scope of the present invention.

Claims

1. A furnace cleaning robot arm, characterized in that: It comprises a driving motor (1), a slewing bearing (2), a main arm (3), a primary telescopic arm (4), a secondary arm extension chain assembly (5), a secondary telescopic arm (6), a slag cleaning shovel (7), a secondary arm retracting chain assembly (9), a primary arm telescopic chain assembly (11), a reducer (12), and a bracket (13); The inner ring of the slewing bearing (2) is fixedly connected to the bracket (13), and the outer ring is fixedly connected to the main arm (3), and the inner ring is rotatably connected to the outer ring; the driving motor (1) is fixed to the rear end of the main arm; a sprocket is provided on the output shaft of the driving motor (1); the first-stage telescopic arm (4) is slidably connected to the main arm (3), and the first-stage arm telescopic chain assembly (11) is meshed with the sprocket on the output shaft of the driving motor (1); the first-stage telescopic arm (4) is connected to the first-stage arm telescopic chain assembly (11); the second-stage telescopic arm (6) is slidably connected to the first-stage telescopic arm (4); The secondary arm extension chain assembly (5) comprises an extension sprocket and an extension chain, wherein the extension sprocket is fixed to the front end of the primary arm, and one end of the extension chain is fixed to the rear end of the main arm and the other end is fixed to the rear end of the secondary arm; The secondary arm retracting chain assembly (9) comprises a retracting sprocket and a retracting chain, wherein the retracting sprocket is fixed at the rear end of the primary arm, and one end of the retracting chain is fixed at the rear end of the secondary arm and the other end is fixed at the front end of the main arm; The reducer (12) is connected to the outer ring of the slewing bearing (2); and a slag cleaning shovel (7) is arranged at the front end of the secondary telescopic arm.

2. The furnace cleaning robot arm according to claim 1, characterized in that: When the primary arm is extended, the extension sprocket at the front end is forced to rotate and move forward, thereby driving the secondary arm to move forward, that is, the primary arm and the secondary arm move forward and extend at the same time.

3. The furnace cleaning robot arm according to claim 1, characterized in that: When the primary arm retracts, the retraction sprocket is forced to rotate, thereby driving the secondary arm to retract, that is, the primary arm and the secondary arm move backward and retract at the same time.

4. The furnace cleaning robot arm according to claim 1, characterized in that: The reducer is an integrated structure of a reduction motor and a reducer.

5. The furnace cleaning robot arm according to claim 1, characterized in that: The main arm and the primary arm, as well as the primary arm and the secondary arm, are slidably connected via a roller assembly (8).

6. The furnace cleaning robot arm according to claim 5, characterized in that: The cross-section of the main arm is a triangular structure. The side plates and the bottom plate are welded to three steel pipes, which are arranged in an equilateral triangle. A flange connected to the slewing bearing is welded to the rear middle part of the outer side of the main arm. Mounting seats for installing the hydraulic motor are welded on the left and right sides of the rear end. Two rows of roller assembly support plates for the sliding of the first-stage telescopic arm are arranged at the front end.

7. The furnace cleaning robot arm according to claim 6, characterized in that: The first-stage telescopic arm is located between the main arm and the second-stage telescopic arm. The cross-sectional structure of the first-stage telescopic arm is the same as that of the main arm, which is also a triangular structure. A sprocket assembly for the telescopic function of the second-stage telescopic arm is installed in the middle position at the rear end of the base plate of the first-stage telescopic arm. Sprocket assemblies for the telescopic function of the second-stage telescopic arm are installed at the rear end of the two side plates of the first-stage telescopic arm, and two rows of roller assembly support plates for the sliding of the second-stage telescopic arm are arranged at the front end.

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