CN220913184U - Partial discharge live detection auxiliary mechanical arm and partial discharge live detection device - Google Patents
Partial discharge live detection auxiliary mechanical arm and partial discharge live detection device Download PDFInfo
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- CN220913184U CN220913184U CN202322616590.8U CN202322616590U CN220913184U CN 220913184 U CN220913184 U CN 220913184U CN 202322616590 U CN202322616590 U CN 202322616590U CN 220913184 U CN220913184 U CN 220913184U
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Abstract
The utility model belongs to the technical field of electric power detection and provides a partial discharge live detection auxiliary mechanical arm and a partial discharge live detection device, wherein a tripod base is arranged between the base and a mechanical arm body with a sensor bracket, the tripod base can meet the scene requirement of using the mechanical arm in special detection sites such as space stenosis, and the like, and the sensor bracket can be attached to the surface of a tank body by lifting the mechanical arm body, so that the problem of the operation mode of lifting an insulating rod by a worker is solved; and moreover, the lifting of the lifting device is realized by driving the rack through the rotation of the first gear, the rotation of the first gear is realized by the rotation of the handle by the staff, the staff can be assisted to finish the partial discharge live detection, and the lifting device has a simple integral structure and lower cost.
Description
Technical Field
The utility model belongs to the technical field of electric power detection, and particularly relates to a partial discharge live detection auxiliary mechanical arm and a partial discharge live detection device.
Background
The Gas-insulated switchgear (Gas-Insulator Switchgear, GIS) partial discharge detection electrical measurement method is mainly an ultrahigh frequency method, and the non-electrical detection method is mainly an ultrasonic method. The ultrahigh frequency method is to collect ultrahigh frequency electromagnetic wave signals at the gap part of the basin-type insulator by utilizing electromagnetic waves which are generated during partial discharge through an ultrahigh frequency sensor; ultrasonic wave is through measuring the acoustic pressure size of ultrasonic signal on the GIS equipment outer wall, converts ultrasonic signal into the electrical signal, just can measure the partial discharge level of equipment, in the ultrasonic detection process, should paste the ultrasonic sensor tight GIS jar body surface.
The inventor finds that when the GIS is detected by partial discharge, after a worker lifts the sensor to a high place by means of the insulating rod, the sensor is attached to the surface of the GIS high place tank body; in the lifting process and the detection process, the condition of physical weakness of a worker for lifting the sensor for a long time can occur, so that the detection efficiency is affected, and the effective fit between the sensor and the surface of the tank body cannot be ensured after the physical weakness of the worker, so that the detection effect is affected; the existing detection equipment for lifting the sensor by means of the robot has the defects that the cost is high, and the robot mechanical arm is not suitable for the scene requirement that the staff is needed to assist when special detection sites such as narrow space are required, and the like.
Disclosure of utility model
In order to solve the problems, the utility model provides the partial discharge live detection auxiliary mechanical arm and the partial discharge live detection device, and the mechanical arm height can be adjusted by a worker through the cooperation of the gear and the rack.
According to some embodiments, the first scheme of the utility model provides a partial discharge live detection auxiliary mechanical arm, which adopts the following technical scheme:
The partial discharge live detection auxiliary mechanical arm comprises a base, a lifting device arranged on the base, a mechanical arm body connected with the lifting device and a sensor bracket connected with the mechanical arm;
The base is a tripod base; the lifting device comprises a lifting base arranged on the base, a first gear rotationally arranged on the lifting base and a rack slidingly arranged on the lifting base; the mechanical arm body is connected with the rack, the rack is meshed with the first gear, and a handle is arranged on the first gear.
Further, the base comprises three support legs which are obliquely arranged.
Further, a locating pin is arranged on the lifting base.
Further, the mechanical arm body comprises a fixed base connected with the lifting device, a first steering engine arranged on the fixed base, a first insulating rod connected with the first steering engine, a second steering engine connected with the first insulating rod and a second insulating rod connected with the second steering engine; the sensor support is arranged at one end of the second insulating rod, which is far away from the second steering engine.
Further, a fixed plate is arranged on the fixed base, and the first steering engine is arranged on the fixed plate; the fixed plate is rotatably provided with a second gear and a third gear, and the second gear is meshed with the third gear; the second gear is connected with an output shaft of the first steering engine, and the third gear is connected with the first insulating rod.
Further, a plurality of connecting columns are arranged between the fixed base and the fixed plate.
Further, the output shaft of the second steering engine is perpendicular to the first insulating rod, and the second insulating rod is connected with the output shaft of the second steering engine.
Further, the sensor support comprises a connector connected with the second insulating rod, three inclined beams connected with the connector and a sensor placing groove connected with the inclined beams.
Further, a first chuck and a second chuck are respectively arranged at two ends of the inner side of the sensor placing groove.
According to some embodiments, a second aspect of the present utility model provides a partial discharge live detection apparatus, which adopts the following technical scheme:
The partial discharge live detection device comprises the partial discharge live detection auxiliary mechanical arm in the first scheme, and a sensor is arranged on the sensor bracket.
Compared with the prior art, the utility model has the beneficial effects that:
The three-leg base is arranged, the lifting device is arranged between the base and the mechanical arm body with the sensor support, the three-leg base can meet the scene requirement that the mechanical arm is used in special detection places such as narrow space, the sensor support is lifted by the mechanical arm body, the sensor can be attached to the surface of the tank body, and the problem of the operation mode of lifting the insulating rod by workers is solved; and moreover, the lifting of the lifting device is realized by driving the rack through the rotation of the first gear, the rotation of the first gear is realized by the rotation of the handle by the staff, the staff can be assisted to finish the partial discharge live detection, and the lifting device has a simple integral structure and lower cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of a sensor holder of the present utility model;
FIG. 3 is a force diagram of a sensor mount of the present utility model;
FIG. 4 is a schematic view of a stationary base of the present utility model;
Wherein: 1. a base; 2. lifting the base; 3. a first gear; 4. a rack; 5. a handle; 6. a positioning pin; 7. a fixed base; 701. a connecting column; 702. a fixing plate; 703. a second gear; 704. a third gear; 8. a fixing hole; 9. the first steering engine; 10. a first insulating rod; 11. the second steering engine; 12. a second insulating rod; 13. a sensor holder; 14. a first chuck; 15. a second chuck; 16. a sensor; 17. a sloping beam; 18. and (5) a connector.
The specific embodiment is as follows:
The utility model will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
Example 1:
The sensor is lifted to the surface of the tank body at the GIS by a worker through the insulating rod for bonding, and in the lifting process and the detection process, the situation of physical weakness of the worker for lifting the sensor for a long time can occur, so that the detection efficiency is affected, and the effective bonding of the sensor and the surface of the tank body cannot be ensured after the physical weakness of the worker is not sufficient, so that the detection effect is affected; the traditional detection equipment for lifting the sensor by means of the robot has the advantages that the robot arm is installed on the detection vehicle for full intelligent detection, the cost is high, and the detection equipment cannot be suitable for scene requirements needing the assistance of staff when special detection sites such as narrow space are needed.
In order to solve the above problems, as shown in fig. 1, the present embodiment provides a partial discharge live detection auxiliary mechanical arm, which includes a base 1, a lifting device disposed on the base, a mechanical arm body connected with the lifting device, and a sensor bracket 13 connected with the mechanical arm;
The base 1 is a tripod base; the lifting device comprises a lifting base 2 arranged on the base 1, a first gear 3 rotatably arranged on the lifting base 2 and a rack 4 slidably arranged on the lifting base 2; the mechanical arm body is connected with the rack 4, the rack 4 is meshed with the first gear 3, and a handle 5 is arranged on the first gear 3.
Optionally, the lifting base 2 is a box body, the first gear 3 is disposed in the box body, rotating shafts are rotatably disposed on the front and rear sides of the box body through bearings, the first gear 3 is fixed on the rotating shafts through key connection and the like, and the rotating shafts are fixedly connected with the handle 5 through welding and the like after extending out of the box body; specifically, when the staff rotates the handle, the rotating shaft drives the first gear 3 to rotate. The upper surface and the lower surface of the box body are provided with sliding grooves matched with the racks 4 in shape, and the racks 4 pass through the sliding grooves to realize sliding connection; or a sliding block is arranged on the rack 4 and is arranged in the chute in a sliding way; specifically, when the first gear 3 rotates, the rack 4 is driven to move up and down in the box body. It can be understood that a through hole and other structures allowing the rack 4 to move up and down are reserved above the base 1 and at the position corresponding to the chute; the positional or positional relationship indicated by "upper", "lower", "front" and "rear" and the like in this embodiment are based on the positional or positional relationship shown in fig. 1, and are merely relational terms, which are merely determined for convenience in describing the structural relationship of the components or elements of the present utility model, and are not intended to designate any components or elements of the present utility model, and are not to be construed as limiting the present utility model.
The lifting device can be quickly and accurately positioned by converting the rotation motion of the first gear 3 into the reciprocating linear motion of the rack 4; by means of lifting of the mechanical arm body to the sensor support 13, a detection person does not need to hold the mechanical arm body in a hand, and the problems that a detection sensor shakes due to physical weakness, data are inaccurate and the like are avoided. The tripod is used for the base 1, the lifting device is arranged between the base 1 and the mechanical arm body with the sensor support 13, the tripod base can meet the scene requirement that the mechanical arm is used for special detection sites such as space stenosis, the sensor support is lifted by the mechanical arm body, the sensor can be attached to the surface of the tank body, and the problem of the operation mode of lifting the insulating rod by workers is solved; and moreover, the lifting of the lifting device is realized by driving the rack through the rotation of the first gear, the rotation of the first gear is realized by the rotation of the handle by the staff, the staff can be assisted to finish the partial discharge live detection, and the lifting device has a simple integral structure and lower cost.
The lifting device and the base 1 are arranged at the lower end of the whole mechanical arm body, and the sensor bracket 13 is arranged at the upper end, so that the stability of the whole mechanical arm is facilitated, and the problem that the head weight and the foot weight are inclined is avoided.
Optionally, the base 1 comprises a connecting plate and three supporting legs which are obliquely arranged and are arranged on the lower side of the connecting plate; three obliquely arranged legs can improve the stability of the base 1. It can be appreciated that the lifting base 2 is fixedly connected with the connecting plate by welding or bolting, and a through hole or other structure allowing the rack 4 to move up and down is reserved at a position corresponding to the connecting plate and the chute.
In order to avoid the problem of falling back after the rack 4 rises, a positioning pin 6 is provided on the lifting base 2. Optionally, one way is to provide a bolt hole on the side of the box body, set the positioning pin 6 as a screw, screw the screw into the box body after the rack 4 rises to meet the requirement, and clamp the end of the screw in the tooth socket of the first gear 3 to prevent the first gear 3 from reversing; in another mode, a spring is arranged between the inner side walls of the box body and the positioning pin 6, when the first gear 3 rotates, a worker pulls out the positioning pin 6 outside the box body, the spring is pressed, after the rack 4 rises to meet the requirement, the worker releases the positioning pin 6, the positioning pin 6 moves inside the box body under the action of the spring, and the end part of the positioning pin 6 is clamped in a tooth groove of the first gear 3 to prevent the first gear 3 from reversing.
In this embodiment, the mechanical arm body includes a fixed base 7 connected to the lifting device 2, a first steering engine 9 disposed on the fixed base, a first insulating rod 10 connected to the first steering engine 9, a second steering engine 11 connected to the first insulating rod 10, and a second insulating rod 12 connected to the second steering engine 11; the sensor bracket 13 is arranged at one end of the second insulating rod 12 away from the second steering engine 11.
Optionally, as shown in fig. 4, the fixed base 7 is provided with a fixed plate 702, and the first steering engine 9 is disposed on the fixed plate 702 by means of bolting or welding; the fixed plate 702 is rotatably provided with a second gear 703 and a third gear 704, and the second gear 703 and the third gear 704 are meshed; the second gear 703 is connected to the output shaft of the first steering engine 9, and the third gear 704 is connected to the first insulating rod 10. Two bearings may be disposed on the fixing plate 702, an outer ring of each bearing is fixed with a hole formed in the fixing plate 702, inner rings of the two bearings are respectively and fixedly connected with a connecting shaft, one end of one connecting shaft is connected with the second gear 702, the other end of the connecting shaft is connected with an output shaft of the first steering engine 9, and the other connecting shaft is connected with the third gear 703. The arrangement of the second gear 702 and the second gear 703 can change the transmission ratio between the first steering engine 9 and the first insulating rod 10.
A plurality of connecting columns 701 are arranged between the fixed base 7 and the fixed plate 702, so that the connection stability is improved; alternatively, the number of the connection posts 701 may be 3 or 4, and the connection posts 701 may be uniformly distributed in the circumferential direction.
Optionally, a fixing hole is formed in the middle of the fixing base 7, and one end of the rack 4 is disposed in the fixing hole 8. Optionally, one way is to directly fix one end of the rack 4 in the fixing hole 8 by welding, and the connection way has certain stability; in another mode, the fixing holes are arranged to be bolt holes, bolts are welded at the end parts of the racks 4 and are connected with the bolt holes through the bolts, and the mode is convenient to split.
Optionally, the second steering engine 11 may be connected to the first insulating rod 10 by a bolt connection or the like; the output shaft of second steering wheel 11 with first insulator spindle 10 is perpendicular, the lower extreme of second insulator spindle 12 with the output shaft fixed connection of second steering wheel 11, the rotation of second steering wheel 11 output shaft can drive the regulation of second insulator spindle in the angle.
In this embodiment, the sensor bracket 13 includes a connector 18 connected to the second insulating rod 12, three diagonal beams 17 connected to the connector 18, and a sensor placement groove connected to the diagonal beams 17. The two ends of the inner side of the sensor placing groove are respectively provided with a first clamping head 14 and a second clamping head 15.
As shown in fig. 2 and 3, the sensor support 13 is isosceles triangle under the center point of the regular triangle, and the center point of the regular triangle is stressed to the same pressure F1 and 2 at two ends of the sensor support 13; the sensor bracket 13 adopts a regular triangle structure, the center of gravity, the inner center, the outer center and the vertical center of the triangle are coincided with one point, the center of the triangle is called as equilateral triangle, the vertex angle is a, the force is F, the physical stress analysis can know that the component force born by each inclined beam 17 is F x cos (a/2), the stress of the sensor is more uniform, and the high efficiency of detection and the accuracy of data are ensured. The first steering engine 9 can realize 360-degree rotation of the first insulating rod 10, and the second steering engine 11 can realize 270-degree rotation of the second insulating rod 12 in the up-down direction, so that the position requirements of all detection points are covered.
Alternatively, the connector 18 has a spherical structure, and the end of the second insulating rod 12 is provided with an annular clamping groove matched with the spherical structure, which can be implemented by a conventional universal ball joint structure, which is not described in detail herein.
The first clamping head 14 and the second clamping head 15 can be arranged as two elastic sheets obliquely arranged in the sensor placing groove, and the sensor is fixed in the sensor placing groove by the elasticity of the first clamping head 14 and the second clamping head 15. The sensor is understood to be an ultrahigh frequency sensor or an ultrasonic sensor.
Example 2:
The embodiment provides a partial discharge live detection device, which comprises the partial discharge live detection auxiliary mechanical arm as described in embodiment 1, and an ultrahigh frequency sensor or an ultrasonic sensor is arranged on the sensor bracket 13. In other embodiments, the whole partial discharge live detection auxiliary mechanical arm can be placed on the detection vehicle, and the detection vehicle together form the partial discharge live detection device.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The partial discharge live detection auxiliary mechanical arm is characterized by comprising a base, a lifting device arranged on the base, a mechanical arm body connected with the lifting device and a sensor bracket connected with the mechanical arm;
The base is a tripod base; the lifting device comprises a lifting base arranged on the base, a first gear rotationally arranged on the lifting base and a rack slidingly arranged on the lifting base; the mechanical arm body is connected with the rack, the rack is meshed with the first gear, and a handle is arranged on the first gear.
2. A partial discharge live detection auxiliary mechanical arm as defined in claim 1, wherein the base comprises three obliquely arranged legs.
3. The partial discharge live detection auxiliary mechanical arm according to claim 1, wherein the lifting base is provided with a positioning pin.
4. The partial discharge live detection auxiliary mechanical arm according to claim 1, wherein the mechanical arm body comprises a fixed base connected with the lifting device, a first steering engine arranged on the fixed base, a first insulating rod connected with the first steering engine, a second steering engine connected with the first insulating rod and a second insulating rod connected with the second steering engine; the sensor support is arranged at one end of the second insulating rod, which is far away from the second steering engine.
5. The partial discharge live detection auxiliary mechanical arm according to claim 4, wherein a fixed plate is arranged on the fixed base, and the first steering engine is arranged on the fixed plate; the fixed plate is rotatably provided with a second gear and a third gear, and the second gear is meshed with the third gear; the second gear is connected with an output shaft of the first steering engine, and the third gear is connected with the first insulating rod.
6. The partial discharge live detection auxiliary mechanical arm according to claim 5, wherein a plurality of connecting columns are arranged between the fixed base and the fixed plate.
7. The partial discharge live detection auxiliary mechanical arm according to claim 4, wherein an output shaft of the second steering engine is perpendicular to the first insulating rod, and the second insulating rod is connected with an output shaft of the second steering engine.
8. The partial discharge live detection auxiliary mechanical arm according to claim 4, wherein the sensor support comprises a connector connected with the second insulating rod, three oblique beams connected with the connector, and a sensor placement groove connected with the oblique beams.
9. The partial discharge live detection auxiliary mechanical arm according to claim 8, wherein a first chuck and a second chuck are respectively arranged at two ends of the inner side of the sensor placing groove.
10. A partial discharge live detection device, comprising the partial discharge live detection auxiliary mechanical arm according to any one of claims 1-9, wherein a sensor is arranged on the sensor bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322616590.8U CN220913184U (en) | 2023-09-25 | 2023-09-25 | Partial discharge live detection auxiliary mechanical arm and partial discharge live detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322616590.8U CN220913184U (en) | 2023-09-25 | 2023-09-25 | Partial discharge live detection auxiliary mechanical arm and partial discharge live detection device |
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| Publication Number | Publication Date |
|---|---|
| CN220913184U true CN220913184U (en) | 2024-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322616590.8U Active CN220913184U (en) | 2023-09-25 | 2023-09-25 | Partial discharge live detection auxiliary mechanical arm and partial discharge live detection device |
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| Country | Link |
|---|---|
| CN (1) | CN220913184U (en) |
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2023
- 2023-09-25 CN CN202322616590.8U patent/CN220913184U/en active Active
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