CN219723399U - Explosion-proof isolating device of spraying robot external shaft motor - Google Patents
Explosion-proof isolating device of spraying robot external shaft motor Download PDFInfo
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- CN219723399U CN219723399U CN202320543435.5U CN202320543435U CN219723399U CN 219723399 U CN219723399 U CN 219723399U CN 202320543435 U CN202320543435 U CN 202320543435U CN 219723399 U CN219723399 U CN 219723399U
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- explosion
- proof
- motor
- box body
- spraying robot
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- 238000005507 spraying Methods 0.000 title claims abstract description 23
- 238000002955 isolation Methods 0.000 claims abstract description 13
- 230000002159 abnormal effect Effects 0.000 claims abstract description 3
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 49
- 230000007704 transition Effects 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 8
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000008397 galvanized steel Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 15
- 238000004880 explosion Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 239000003973 paint Substances 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Abstract
The utility model relates to the technical field of spraying robots, in particular to an explosion-proof isolation device for an external shaft motor of a spraying robot, which comprises a non-explosion-proof motor, an explosion-proof shell and a control unit, wherein the explosion-proof shell is arranged outside the non-explosion-proof motor; the switching shaft is connected with the non-explosion-proof motor and extends out of the explosion-proof shell, and is used for realizing that the non-explosion-proof motor is isolated in the explosion-proof shell and can still output power outwards; the gas pipe quick connector is arranged on the explosion-proof shell and is used for being connected with an external gas pipe to form a closed-loop explosion-proof system, so that the internal pressure of the explosion-proof shell is always larger than that of an external dangerous environment; the safety pressure relief valve is arranged on the non-explosion-proof motor and used for maintaining the pressure inside the explosion-proof shell when the internal pressure value is normal and discharging redundant gas when the internal pressure value is abnormal. The utility model has low cost, strong expansibility, high degree of automation and high safety.
Description
Technical Field
The utility model relates to the technical field of spraying robots, in particular to an explosion-proof isolation device for an external shaft motor of a spraying robot.
Background
Spray robots are being widely used in various industries. The most important differences between the painting robot and the general-purpose robot are whether the painting robot is explosion-proof or wrist-structured. In spraying, both powder and paint are sprayed, since atomization is necessary to ensure uniformity. The components of the paint are chemical substances, and the paint mist and other volatilized gases have combustibility, so that the spraying operation site is like a gasoline station, and the paint is inflammable and explosive. The robot is controlled by electricity, and if the protection is improper, the explosion caused by fire can occur. The common robot explosion-proof mode is positive pressure type explosion-proof, namely, a motor and a cable of a robot body are sealed in a robot shell, clean air is continuously flushed into the shell by using an explosion-proof cabinet to control, and the air pressure in the shell is always larger than the air pressure of an external dangerous environment, so that explosion prevention is realized. In order to meet the requirements of large-scale workpiece spraying, a servo motor connecting mechanical device except a body is generally arranged for the robot to be used as a walking shaft or a rotary table, and at the moment, the explosion-proof requirement on an external shaft motor is met. Currently, the main stream has the following two schemes: 1. and a protective cover or a protective layer is arranged on the outer shaft to isolate the outer shaft motor from a dangerous environment, so that combustible gas and dust are blocked, and explosion prevention is realized. The defects are that: the motor is placed in a small and sealed environment without ventilation and heat dissipation conditions, a large amount of heat can be accumulated when the motor continuously works in the small and sealed environment, so that danger is caused or motor faults are caused, the motor is isolated by the protective cover and is an oversized mechanical device, and the working range of a robot or other devices can be influenced in a spray booth with limited space; 2. the external shaft motor adopts an explosion-proof servo motor. The current main stream explosion-proof motor adopts an enhanced e-type electric structure which does not generate sparks, electric arcs and dangerous temperatures, and the d-type explosion-proof shell is used for achieving the explosion-proof purpose through the explosion-proof shell and controlling the surface temperature. The defects are that: the explosion-proof motor is high in price, and under the condition that the power is the same, the price of the explosion-proof motor is generally several times higher than that of a common servo motor, so that the project cost can be greatly improved. And the explosion-proof motor is easy to cause axle locking accidents because the gap of the through part of the axle is very small. In order to realize explosion protection of an external shaft motor of the spraying robot with lower cost, a non-explosion-proof motor is indispensable to be used as an explosion-proof isolation device.
Disclosure of Invention
In order to solve the technical problems, the utility model provides an explosion-proof isolation device for an external shaft motor of a spraying robot.
The technical problems to be solved by the utility model are realized by adopting the following technical scheme:
the utility model provides an explosion-proof isolating device of spraying robot external shaft motor, includes non-explosion-proof motor, still includes:
an explosion-proof housing disposed outside the non-explosion-proof motor;
the switching shaft is connected with the non-explosion-proof motor and extends out of the explosion-proof shell, and is used for realizing that the non-explosion-proof motor is isolated in the explosion-proof shell and can still output power outwards;
the gas pipe quick connector is arranged on the explosion-proof shell and is used for being connected with an external gas pipe to form a closed-loop explosion-proof system, so that the internal pressure of the explosion-proof shell is always larger than that of an external dangerous environment;
the safety pressure relief valve is arranged on the non-explosion-proof motor and used for maintaining the pressure inside the explosion-proof shell when the internal pressure value is normal and discharging redundant gas when the internal pressure value is abnormal.
As a further improvement of the utility model, the explosion-proof housing comprises a sealing box body and a transition flange arranged on the sealing box body, the quick air pipe connector and the safety relief valve are correspondingly arranged on the sealing box body, and the switching shaft penetrates through the transition flange and extends out of the sealing box body.
As a further improvement of the utility model, the sealing box body is provided with a threading plate processed by galvanized steel plates.
As a further improvement of the utility model, the sealing box body is formed by bending, welding and splicing stainless steel plates subjected to surface galvanization treatment, and the welding part is subjected to polishing treatment.
As a further improvement of the utility model, the thickness of the sealing box body is 3-8mm.
As a further improvement of the utility model, a first sealing gasket and a second sealing gasket are arranged in the sealing box body and correspond to the joint of the transition flange.
As a further improvement of the utility model, the first sealing gasket and the second sealing gasket are both made of nitrile rubber.
As a further development of the utility model, the adapter shaft is made of carbon steel.
The beneficial effects of the utility model are as follows:
compared with the prior art, the utility model has the following advantages:
1. the cost is low, the spraying robot is mainly processed by using a steel plate, an explosion-proof system of the spraying robot is utilized, no change is needed, and the explosion-proof requirement of an external shaft motor is realized at very low cost;
2. the expansibility is strong, and a plurality of explosion-proof isolation devices can be used together;
3. the automatic degree is high, an air pressure detection mechanism of the explosion-proof robot explosion-proof cabinet is utilized, automatic air supplementing can be realized, so that the inside of the explosion-proof box is always in a positive pressure state, and when the explosion-proof box is suddenly out of pressure, the robot electric cabinet and an external shaft motor can be automatically powered off, and any additional device is not needed;
4. the safety is high, is furnished with the safety relief valve, can automatic pressure release, prevents that the internal atmospheric pressure of sealed box from being too big from causing danger.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a flow chart of the operation of the present utility model.
In the figure: 1. a transfer shaft; 2. a transition flange; 3. a first gasket; 4. sealing the box body; 5. a non-explosion-proof motor; 6. a safety relief valve; 7. a threading plate; 8. a quick joint of the air pipe; 9. and a second gasket.
Detailed Description
In order that the manner in which the utility model is attained, as well as the features and advantages thereof, will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.
As shown in fig. 1, the explosion-proof isolation device for the external shaft motor of the spraying robot mainly comprises an explosion-proof shell, a non-explosion-proof motor 5, a switching shaft 1, a safety relief valve 6, a threading plate 7 and an air pipe quick connector 8.
The explosion-proof housing is composed of a sealing box body 4, a transition flange 2, a first sealing gasket 3 and a second sealing gasket 9. The sealing box body 4 is mainly formed by bending, welding and splicing 3-8mm stainless steel plates subjected to surface galvanization treatment, and welding seams at all material lap joints on the sealing box body 4 are continuous welding seams, and the welding seams are polished smoothly. The transition flange 2 is fastened on the top of the sealing box body 4 through screws; the first sealing gasket 3 and the second sealing gasket 9 are made of nitrile rubber and are arranged at the joint of the sealing box body 4 and the transition flange 2 so as to realize the integral tightness after the assembly is finished, and the pressure maintaining performance of the sealing box body is verified by ventilation after the assembly is finished.
The adapter shaft 1 is made of carbon steel, and one end of the adapter shaft 1 is connected with a rotating shaft of the non-explosion-proof motor 5 by completely isolating the non-explosion-proof motor 5 in the sealing box body 4, and the other end of the adapter shaft passes through the transition flange 2 to be connected with an external mechanical device, so that the purpose of outputting power to the outside can be realized although the non-explosion-proof motor 5 is completely isolated in the sealing box body 4.
The safety relief valve 6 penetrates through the sealing box body 4, and under the normal condition of an internal pressure value, the safety relief valve 6 is closed to realize the pressure maintaining function of the sealing box body 4. When the sealing box body 4 works abnormally, when the internal pressure of the sealing box body 4 rises sharply and exceeds a set threshold value, a large amount of gas is instantaneously communicated with the outside by pushing the safety relief valve 6, so that a large amount of gas is discharged, the strong pressure in the sealing box body 4 is quickly released, explosion is avoided, the sealing box body 4 can be automatically reset and continuously used for protection, and the maintenance cost is reduced.
The threading plate 7 is formed by processing galvanized steel sheets with the size of 4 mm. The main function of the non-explosion-proof motor is that the encoder wire and the power wire of the non-explosion-proof motor 5 pass through the sealing box body 4 with a very small gap and are fixed on the outer shell of the sealing box body 4, so that the overall tightness is prevented from being influenced by the too large gap between the connecting cable and the sealing box body 4, and the normal operation of the non-explosion-proof motor 5 is prevented from being influenced by the wire falling caused by the influence of external force on the connecting cable.
The air pipe quick connector 8 is communicated with the sealing box body 4 and is used for connecting the explosion-proof box with a sealed explosion-proof cavity of the robot and an explosion-proof cabinet to form a closed loop system, when the explosion-proof system is started initially, the explosion-proof box cavity is purged, dangerous gas in the sealing cavity is purged, after purging is completed, the robot explosion-proof cabinet detects the air pressure value in the sealing system in real time, when the air pressure value is lower than a set threshold value, the explosion-proof cabinet controls the air source to supplement air to the system, and when the air pressure in the system exceeds the air supplement threshold value, the air supplement is stopped to realize that the internal pressure of the explosion-proof box is always greater than the external dangerous environment.
The working principle and the using flow of the utility model are as follows: as shown in the flow chart of fig. 2.
Before the non-explosion-proof motor 5 is electrified and started, firstly, the explosion-proof cabinet sweeps dangerous gas in the explosion-proof box through the gas pipe quick connector 8, the dangerous gas is cleared out of the explosion-proof box, the process lasts for about 4-5 minutes to ensure the safe starting environment of the non-explosion-proof motor 5, the explosion-proof box is controlled by the explosion-proof cabinet to be in a positive pressure state after the sweeping is finished, and if the gas pressure fed back to the explosion-proof cabinet by the explosion-proof cabinet is lower than a threshold value, the gas valve is opened to supplement the gas into the explosion-proof box until the gas pressure fed back to the explosion-proof cabinet by the explosion-proof box is higher than the threshold value; only when the explosion-proof box is in a positive pressure state, the non-explosion-proof motor 5 can normally work, the rotating shaft of the non-explosion-proof motor 5 in the sealed box body 4 drives the switching shaft 1 to rotate, and the switching shaft 1 is connected to external mechanical structures such as a turntable or a walking shaft to drive the switching shaft to operate. When the explosion-proof box suddenly loses pressure, the explosion-proof cabinet can detect the disappearance of explosion-proof box internal pressure through the atmospheric pressure feedback, forces the automatic outage of robot electric cabinet to guarantee operation safety. When the internal air pressure of the explosion-proof box is larger than the pressure relief threshold value of the safety pressure relief valve 6, the explosion-proof box can automatically discharge a large amount of air to realize pressure relief, explosion is avoided, and the explosion-proof box can be automatically reset to continue to be used for protection after the pressure relief is finished.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an explosion-proof isolating device of spraying robot external shaft motor, includes non-explosion-proof motor (5), its characterized in that: further comprises:
an explosion-proof housing arranged outside the non-explosion-proof motor (5);
the switching shaft (1) is connected with the non-explosion-proof motor (5) and extends out of the explosion-proof shell, and is used for realizing that the non-explosion-proof motor (5) can still output power to the outside when isolated in the explosion-proof shell;
the air pipe quick connector (8) is arranged on the explosion-proof shell and is used for being connected with an external air pipe to form an explosion-proof system with a closed loop, so that the internal pressure of the explosion-proof shell is always larger than that of an external dangerous environment;
and the safety pressure relief valve (6) is arranged on the non-explosion-proof motor (5) and is used for maintaining the pressure inside the explosion-proof shell when the internal pressure value is normal and discharging redundant gas when the internal pressure value is abnormal.
2. The explosion-proof isolation device for an external shaft motor of a spraying robot according to claim 1, wherein: the explosion-proof housing comprises a sealing box body (4) and a transition flange (2) arranged on the sealing box body (4), the quick air pipe connector (8) and the safety relief valve (6) are correspondingly arranged on the sealing box body (4), and the adapter shaft (1) penetrates through the transition flange (2) and stretches out of the sealing box body (4).
3. The explosion-proof isolation device for an external shaft motor of a spraying robot according to claim 2, wherein: the sealing box body (4) is provided with a threading plate (7) which is formed by processing galvanized steel sheets.
4. The explosion-proof isolation device for an external shaft motor of a spraying robot according to claim 2, wherein: the sealing box body (4) is formed by bending, welding and splicing stainless steel plates subjected to surface galvanization treatment, and the welding part is subjected to polishing treatment.
5. The explosion-proof isolation device for an external shaft motor of a spraying robot according to claim 2, wherein: the thickness of the sealing box body (4) is 3-8mm.
6. The explosion-proof isolation device for an external shaft motor of a spraying robot according to claim 2, wherein: the sealing box body (4) is internally provided with a first sealing gasket (3) and a second sealing gasket (9) corresponding to the joint of the transition flange (2).
7. The explosion-proof isolation device for an external shaft motor of a spraying robot according to claim 6, wherein: the first sealing gasket (3) and the second sealing gasket (9) are both made of nitrile rubber.
8. The explosion-proof isolation device for an external shaft motor of a spraying robot according to claim 1, wherein: the adapter shaft (1) is made of carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320543435.5U CN219723399U (en) | 2023-03-20 | 2023-03-20 | Explosion-proof isolating device of spraying robot external shaft motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320543435.5U CN219723399U (en) | 2023-03-20 | 2023-03-20 | Explosion-proof isolating device of spraying robot external shaft motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219723399U true CN219723399U (en) | 2023-09-22 |
Family
ID=88063979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320543435.5U Active CN219723399U (en) | 2023-03-20 | 2023-03-20 | Explosion-proof isolating device of spraying robot external shaft motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219723399U (en) |
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2023
- 2023-03-20 CN CN202320543435.5U patent/CN219723399U/en active Active
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