Extension arm of industrial robot and industrial robot

Abstract

The utility model belongs to the technical field of robots, and particularly relates to an extension arm of an industrial robot and the industrial robot, the extension arm comprises a base, an outer pipe, a middle pipe and an inner core, the base is used for being connected with a body of the industrial robot, one end of the inner core close to the base is connected with the base, and the middle pipe is sleeved on the inner core. The end, close to the base, of the middle pipe abuts against the base, the inner hole wall of the middle pipe is in interference fit with the peripheral face of the inner core, the middle pipe is sleeved with the outer pipe, the end, close to the base, of the outer pipe abuts against the base, the hole inner wall of the outer pipe is in interference fit with the peripheral wall of the middle pipe, the outer pipe is made of glass fiber reinforced plastic, and the middle pipe and the inner core are both made of aluminum alloy. According to the three-layer structural design, the outer pipe is made of glass fiber reinforced plastic, and the middle pipe and the inner core are made of aluminum alloy, so that lightweight design and guarantee of structural strength can be considered at the same time, the overall weight of the extension arm can be greatly reduced, and the load at the joint of the extension arm and the body of the industrial robot is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of robots, and particularly relates to an extension arm of an industrial robot and an industrial robot. Background Art

[0002] Insulator flashover due to pollution means that the contaminants attached to the surface of the insulator (external insulation) of the power grid gradually dissolve in water under humid conditions, forming a conductive film on the insulation surface, greatly reducing the insulation level of the insulator, and resulting in a strong discharge phenomenon under the action of an electric field. Generally, it is necessary to automatically clean the contaminants on the insulator by an industrial robot while energized.

[0003] An existing industrial robot includes a body, an extension arm, a lifting mechanism and a cleaning tooling. The extension arm is connected to the body and can increase the working range of the robot. The lifting mechanism is connected to the extension arm, and the cleaning tooling is connected to the lifting mechanism. The lifting mechanism and the cleaning tooling are electrically connected to the body. The body controls the lifting mechanism to drive the cleaning tooling to lift, so that the cleaning tooling moves to the position of the insulator. The cleaning tooling identifies the insulator through its own vision system and automatically performs cleaning operations on the insulator.

[0004] For the existing industrial robot, the overall weight of the extension arm is relatively heavy, resulting in a low connection strength at the connection between the extension arm and the body, and it is easy to bend or even break, with poor safety. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an extension arm of an industrial robot and an industrial robot for the problem that the overall weight of the extension arm of the existing industrial robot is relatively heavy.

[0006] To solve the above technical problem, on the one hand, an embodiment of the utility model provides an extension arm of an industrial robot, which includes a base, an outer tube, an intermediate tube and an inner core. The base is used to be connected to the body of the industrial robot. One end of the inner core close to the base is connected to the base. The intermediate tube is sleeved on the inner core. One end of the intermediate tube close to the base abuts against the base. The inner hole wall of the intermediate tube and the outer peripheral surface of the inner core are in interference fit. The outer tube is sleeved on the intermediate tube. One end of the outer tube close to the base abuts against the base. The inner hole wall of the outer tube and the outer peripheral wall of the intermediate tube are in interference fit. The outer tube is made of fiberglass, and the intermediate tube and the inner core are both made of aluminum alloy.

[0007] Optionally, the base is provided with a jack, one end of the inner core close to the base is inserted into the jack, and the outer peripheral surface of the inner core is fixedly welded to the base.

[0008] Optionally, the length of the inner core is equal to half of the length of the intermediate tube.

[0009] Optionally, welding holes are provided on the intermediate pipe, and the intermediate pipe is welded to the outer peripheral surface of the inner core through the welding holes.

[0010] Optionally, the welding holes are oblong holes, and the welding holes extend along the length direction of the intermediate pipe.

[0011] Optionally, the inner core is rectangular, the intermediate pipe and the outer pipe are both rectangular pipes, and the welding holes are provided on all four sides of the intermediate pipe.

[0012] Optionally, the lengths of the welding holes on all four sides of the intermediate pipe are the same.

[0013] Optionally, the length of the intermediate pipe is equal to half of the length of the outer pipe.

[0014] Optionally, the outer peripheral surface of the intermediate pipe is bonded to the inner hole wall of the outer pipe.

[0015] For the extension arm of the industrial robot according to the embodiment of the present invention, the outer pipe is sleeved on the intermediate pipe, the intermediate pipe is sleeved on the inner core, the inner core is connected to the base, and the three-layer structure design can increase the overall structural strength of the extension arm. The outer pipe is made of fiberglass, and the intermediate pipe and the inner core are made of aluminum alloy, which can take into account the lightweight design and ensure the structural strength at the same time, can greatly reduce the overall weight of the extension arm, reduce the load at the connection between the extension arm and the body of the industrial robot, and improve the connection strength at the connection.

[0016] On the other hand, the embodiment of the present invention provides an industrial robot, including a body and the above-mentioned extension arm. A flange is provided on the body, an installation hole is provided on the base, and the base and the flange are connected by bolts. Description of the Drawings

[0017] Figure 1 It is an assembly schematic diagram of the extension arm and the body of the industrial robot provided by an embodiment of the present invention;

[0018] Figure 2 It is an assembly schematic diagram of the base and the inner core;

[0019] Figure 3 It is a structural schematic diagram of the intermediate pipe.

[0020] The reference numerals in the specification are as follows: 1, body; 2, flange; 3, bolt; 4, base; 5, outer pipe; 6, jack; 7, installation hole; 8, inner core; 9, intermediate pipe; 10, welding hole. Detailed Embodiments

[0021] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] As Figures 1 to 3 shown, an embodiment of the present utility model provides an extension arm of an industrial robot, including a base 4, an outer tube 5, an intermediate tube 9 and an inner core 8. The base 4 is used to be connected to the body 1 of the industrial robot. One end of the inner core 8 close to the base 4 is connected to the base 4. The intermediate tube 9 is sleeved on the inner core 8. One end of the intermediate tube 9 close to the base 4 abuts against the base 4. The inner hole wall of the intermediate tube 9 is in interference fit with the outer peripheral surface of the inner core 8. The outer tube 5 is sleeved on the intermediate tube 9. One end of the outer tube 5 close to the base 4 abuts against the base 4. The inner hole wall of the outer tube 5 is in interference fit with the outer peripheral wall of the intermediate tube 9. The outer tube 5 is made of fiberglass, and the intermediate tube 9 and the inner core 8 are both made of aluminum alloy.

[0023] In one embodiment, a jack 6 is provided on the base 4. One end of the inner core 8 close to the base 4 is inserted into the jack 6, and the outer peripheral surface of the inner core 8 is fixedly welded to the base 4.

[0024] One end of the inner core 8 close to the base 4 is inserted into the jack 6, and the outer peripheral surface of the inner core 8 is in interference fit with the inner hole wall of the jack 6. In addition, along the joint of the inner core 8 and the base 4, the inner core 8 is fixedly welded to the base 4, which is simple to connect and convenient to fix.

[0025] In one embodiment, the length of the inner core 8 is equal to one-half of the length of the intermediate tube 9, and the length of the intermediate tube 9 is equal to one-half of the length of the outer tube 5. The overall length of the inner core 8 is equal to one-half of the length of the intermediate tube 9, and the length of the intermediate tube 9 is equal to one-half of the length of the outer tube 5, which can reduce the overall weight of the extension arm as much as possible while ensuring the overall structural strength of the extension arm.

[0026] In one embodiment, a welding hole 10 is provided on the intermediate tube 9, and the intermediate tube 9 is welded to the outer peripheral surface of the inner core 8 through the welding hole 10.

[0027] The welding hole 10 is provided at a position less than one-half of the intermediate tube 9. The intermediate tube 9 is fixedly welded to the inner core 8 through the welding hole 10, which can further increase the connection strength between the intermediate tube 9 and the inner core 8, avoid shaking in the middle, and improve the stability of the extension arm.

[0028] In one embodiment, the welding hole 10 is an oblong hole, and the welding hole 10 extends along the length direction of the intermediate pipe 9.

[0029] The length of the welding hole 10 is three - quarters of the length of the inner core 8. The sufficiently long welding hole 10 can increase the welding area between the intermediate pipe 9 and the inner core 8.

[0030] In one embodiment, the inner core 8 is rectangular, the intermediate pipe 9 and the outer pipe 5 are both rectangular pipes, and the welding holes 10 are provided around the intermediate pipe 9. The rectangular inner core 8, intermediate pipe 9, and outer pipe 5 can naturally form a blocking structure at the corners, avoiding circumferential rotation between the inner core 8, intermediate pipe 9, and outer pipe 5. Setting the welding holes 10 around the intermediate pipe 9 can further improve the stability of the extension arm.

[0031] In one embodiment, the lengths of the welding holes 10 around the intermediate pipe 9 are the same. The heights of the ends of two relatively - arranged welding holes 10 on the intermediate pipe 9 close to the base 4 are the same, and the heights of the ends of two adjacent welding holes 10 on the intermediate pipe 9 close to the base 4 are different. This can ensure that the welding areas between the periphery of the intermediate pipe 9 and the inner core 8 are the same.

[0032] In one embodiment, the outer peripheral surface of the intermediate pipe 9 is bonded to the inner hole wall of the outer pipe 5.

[0033] Before sleeving the outer pipe 5 on the intermediate pipe 9, first coat the outer peripheral surface of the intermediate pipe 9 with a strong structural adhesive. After sleeving the outer pipe 5 on the intermediate pipe 9, the outer pipe 5 can be bonded to the intermediate pipe through the strong structural adhesive.

[0034] The working principle of the extension arm of the industrial robot according to the embodiment of the present invention is as follows:

[0035] The inner core 8 is connected to the base 4. The three - layer structure design can increase the overall structural strength of the extension arm. The outer pipe 5 is made of fiberglass, and the intermediate pipe 9 and the inner core 8 are made of aluminum alloy, which can take into account both lightweight design and ensure structural strength, can significantly reduce the overall weight of the extension arm, and reduce the load at the connection between the extension arm and the body 1 of the industrial robot.

[0036] According to the extension arm of the industrial robot of the embodiment of the present invention, the outer pipe 5 is sleeved on the intermediate pipe 9, the intermediate pipe 9 is sleeved on the inner core 8, and the inner core 8 is connected to the base 4. The three - layer structure design can increase the overall structural strength of the extension arm. The outer pipe 5 is made of fiberglass, and the intermediate pipe 9 and the inner core 8 are made of aluminum alloy, which can take into account both lightweight design and ensure structural strength, can significantly reduce the overall weight of the extension arm, reduce the load at the connection between the extension arm and the body 1 of the industrial robot, and improve the connection strength at the connection.

[0037] In other embodiments, the welding holes 10 may be circular holes arranged in a star shape on the middle pipe 9.

[0038] In addition, an embodiment of the present utility model further provides an industrial robot, which includes a main body 1 and the above-mentioned extension arm. A flange 2 is provided on the main body 1, and a mounting hole 7 is provided on the base 4. The base 4 and the flange 2 are connected by bolts 3. By inserting bolts 3 into the mounting hole 7 of the base 4 and the flange 2, the extension arm is fixed on the main body 1.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An extension arm of an industrial robot, characterized in that, It includes a base (4), an outer tube (5), an intermediate tube (9) and an inner core (8). The base (4) is used to connect with the body (1) of an industrial robot. One end of the inner core (8) close to the base (4) is connected to the base (4). The intermediate tube (9) is sleeved on the inner core (8). One end of the intermediate tube (9) close to the base (4) abuts against the base (4). The inner hole wall of the intermediate tube (9) is in interference fit with the outer peripheral surface of the inner core (8). The outer tube (5) is sleeved on the intermediate tube (9). One end of the outer tube (5) close to the base (4) abuts against the base (4). The inner hole wall of the outer tube (5) is in interference fit with the outer peripheral wall of the intermediate tube (9). The outer tube (5) is made of fiberglass, and the intermediate tube (9) and the inner core (8) are both made of aluminum alloy.

2. The extension arm of the industrial robot according to claim 1, characterized in that, The base (4) is provided with an insertion hole (6). One end of the inner core (8) close to the base (4) is inserted into the insertion hole (6), and the outer peripheral surface of the inner core (8) is fixedly welded to the base (4).

3. The extension arm of the industrial robot according to claim 2, characterized in that, The length of the inner core (8) is equal to one half of the length of the intermediate tube (9).

4. The extension arm of the industrial robot according to claim 3, characterized in that, The intermediate tube (9) is provided with a welding hole (10), and the intermediate tube (9) is welded to the outer peripheral surface of the inner core (8) through the welding hole (10).

5. The extension arm of the industrial robot according to claim 4, characterized in that, The welding hole (10) is an oblong hole, and the welding hole (10) extends along the length direction of the intermediate tube (9).

6. The extension arm of the industrial robot according to claim 5, characterized in that, The inner core (8) is rectangular, the intermediate tube (9) and the outer tube (5) are both rectangular tubes, and the welding holes (10) are provided on all four sides of the intermediate tube (9).

7. The extension arm of the industrial robot according to claim 6, characterized in that, The lengths of the welding holes (10) on all four sides of the intermediate tube (9) are the same.

8. The extension arm of the industrial robot according to any one of claims 3 to 7, characterized in that The length of the intermediate tube (9) is equal to one half of the length of the outer tube (5).

9. The extension arm of the industrial robot according to claim 8, characterized in that, The outer peripheral surface of the intermediate tube (9) is bonded to the inner hole wall of the outer tube (5).

10. An industrial robot, characterized in that, It includes a body (1) and an extension arm according to any one of claims 1 to 9. The body (1) is provided with a flange (2). The base (4) is provided with a mounting hole (7), and the base (4) is connected to the flange (2) by bolts (3).

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