CN216215438U - Closed fixture for replacing insulator of ultra-high voltage transmission line - Google Patents
Closed fixture for replacing insulator of ultra-high voltage transmission line Download PDFInfo
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- CN216215438U CN216215438U CN202122384698.XU CN202122384698U CN216215438U CN 216215438 U CN216215438 U CN 216215438U CN 202122384698 U CN202122384698 U CN 202122384698U CN 216215438 U CN216215438 U CN 216215438U
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Abstract
The patent discloses a closed type fixture for replacing insulators of an ultra-high voltage transmission line, which comprises a main body and an upper cover, wherein one end of the upper cover is hinged to the main body, the other end of the upper cover is connected with the main body through a locking stud, a motor locking mechanism is arranged at the joint of the locking studs, a threaded hole matched with the locking stud is formed in the end part of the upper cover, and a motor is fixed at the lower end of a stud through hole in the main body; a square hole is formed in the lower end of the locking stud, a square shaft is arranged at the upper end of the driving shaft, the locking stud is arranged in the stud through hole, the upper end of the driving shaft is inserted into the square hole of the locking stud to form movable connection, a spiral pressure spring is arranged at the lower end of the locking stud, and the motor drives the driving shaft to rotate to drive the locking stud to rotate; a motor of the motor locking mechanism is electrically connected with the robot controller; the advantages are that: 1) the upper cover is automatically locked through the rotation of the motor; 2) the insulator automatic replacing device is suitable for a robot to automatically replace insulators at high altitude, simple in structure and easy to achieve automatic operation.
Description
Technical Field
The patent relates to a clamp for replacing insulators, in particular to a closed clamp for replacing insulators of an extra-high voltage transmission line.
Background
When the tension insulator on the power transmission line runs for a long time, the tension insulator is influenced by various outside bad weather, and the tension insulator deteriorates to become a zero-value or low-value insulator, so that the normal running of the power transmission network is influenced; therefore, the line must be frequently patrolled, and zero or low-value insulators are found and replaced in time. The electric power tool used for replacing the insulator is a closed fixture, workers need to operate and manually replace the insulator at high altitude, and the insulator replacement tool is large in workload and not safe. Particularly, with the increasing of the transmission grade, the volume and the weight of a single insulator are increased, and for the newly built ultrahigh voltage transmission line in China, the weight of the single insulator reaches 17 to 22 kilograms, the insulator replacement operation at high altitude is more difficult, and the manual operation has high working strength and is unsafe.
With the development of robots and intelligent control technologies, the daily maintenance of power transmission lines is gradually replacing human work operations, for example, after low-value and zero-value insulators are discovered and found through automatic line inspection of the robots, the insulators are automatically grabbed by the robot mechanical arm when being replaced, and new and old insulators are transported by the robots. However, manual operation is only partially replaced in the aspect of replacing the insulator, the used closed fixture needs to be matched with a robot at high altitude manually to complete locking of the closed fixture, the closed fixture cannot adapt to the robot to complete automatic replacement of the insulator, and the automation degree needs to be further improved.
Chinese patent No. 202020261318.6 discloses a "fixture for replacing strain insulator single sheet for extra-high voltage and extra-high voltage lines for robots", the closed fixture has high automation degree, after the fixture is clamped on an insulator steel cap, an upper cover is closed and drives a screw rod arranged on a fixture main body to rotate through a motor, the screw rod is automatically connected with a threaded hole on the upper cover, and the upper cover is pressed on the main body, so that the upper cover and the main body are tightened and clamped on the insulator, and the closed fixture is suitable for robot operation; however, a motor shaft of the motor is connected with a screw rod through a spline sleeve to transmit torque, and is held on a main body through a gland, the connection and matching requirements of the screw rod and the spline sleeve are high, and parts are more troublesome to process and assemble and are not suitable to be replaced; when the upper cover is opened, the motor drives the screw rod to rotate reversely, the working process cannot be accurately controlled, and whether the screw rod is disengaged from the threaded hole of the upper cover or not is difficult to judge.
Disclosure of Invention
The purpose of this patent is exactly to design a special high tension transmission line and changes closed fixture for insulator, through the action of robot automatic control motor locking mechanism, makes things convenient for main part and upper cover automatic locking and opens, and the robot of being convenient for realizes carrying out automatic the change to the insulator in the high altitude.
The technical scheme of this patent is: closed fixture for insulator is changed to extra-high voltage transmission line, characterized by: the insulator steel cap clamping device comprises a main body and an upper cover, wherein one end of the upper cover is hinged to the main body, the other end of the upper cover is connected with the main body through a locking stud, and a cylindrical cavity for clamping an insulator steel cap is formed between the main body and the upper cover; a motor locking mechanism is arranged at the connection position of the locking stud of the upper cover and the main body, a motor of the motor locking mechanism is electrically connected with the robot controller, and a timer is connected in series in a connection circuit of the motor and the robot controller;
the motor locking mechanism comprises a motor, a driving shaft, a spiral pressure spring and a locking stud, a threaded hole matched with the locking stud is formed in the end part of the upper cover, a stud through hole is formed in the corresponding position on the main body, the motor is fixed at the lower end of the stud through hole, and an output shaft of the motor is rigidly connected with the lower end of the driving shaft; a square hole which is through along the axial direction is formed in the center of the locking stud, a square shaft which is matched with the square hole is arranged at the upper end of the driving shaft, the locking stud is arranged in the stud through hole, the upper end of the driving shaft is inserted into the square hole of the locking stud to form movable connection, a spiral pressure spring is arranged between the lower end face of the locking stud and the step face of the lower end of the driving shaft, the upper end face of the locking stud protrudes out of the upper end face of the stud through hole, and the driving shaft rotates to drive the locking stud to rotate; when the upper cover is closed, the upper end of the locking stud is stressed to compress the spiral pressure spring, and the upper end surface of the square shaft of the driving shaft is not higher than the upper end surface of the locking stud; furthermore, a cylindrical boss is arranged on the outer circumference of the lower end of the locking stud, a stud through hole in the clamp main body is a stepped hole, the diameter of an upper hole of the stepped hole is slightly larger than the outer diameter of the thread of the locking stud, and the diameter of a lower hole of the stepped hole is larger than the diameter of the cylindrical boss at the lower part of the locking stud; the locking stud is inserted into the stud through hole from the lower end of the stud through hole, the upper end face of the locking stud protrudes out of the upper end face of the stud through hole under the action of the helical compression spring, and the upper end face of the locking stud is not higher than the upper end face of the stud through hole after the helical compression spring is compressed when the upper cover is closed;
furthermore, after the locking stud is inserted into the stud via hole from the upper end of the stud via hole, the upper end surface of the locking stud protrudes out of the upper end surface of the stud via hole under the action of the helical compression spring, and when the upper cover is closed, the upper end surface of the locking stud after the helical compression spring is compressed is not higher than the upper end surface of the stud via hole;
further, an automatic upper cover turnover mechanism is arranged at the hinged position of the upper cover and the main body, and comprises an elastic firing pin mechanism and an elastic ejection mechanism, wherein the elastic ejection mechanism comprises a top rod arranged in the upper end face of the main body and a top rod pressure spring arranged at the lower end of the top rod, and the end part of the upper cover is elastically pressed at the upper end of the top rod when the upper cover is opened; the firing pin, the pressure spring, the connecting rod and the hook are sequentially arranged in the firing pin seat to form an elastic firing pin mechanism, the firing pin seat is fixed in a groove on the upper end face of the main body, the front end of the connecting rod is fixedly connected with the rear end of the firing pin, the rear end of the connecting rod is fixedly connected with the lower part of the hook, the firing pin is pressed in a firing pin hole cavity of the firing pin seat through the pressure spring, and the front end of the firing pin protrudes out of the inner surface of a cylindrical cavity for clamping an insulator steel cap in the main body under the action of the pressure spring; the hook head is arranged at the end part of the upper cover, when the upper cover is opened, the hook head of the upper cover is hooked on the hook, when the insulator steel cap touches the firing pin at the front end of the firing pin, the firing pin pressure spring is compressed to enable the hook to move backwards, the hook is unhooked from the hook head, at the moment, the elastic ejection mechanism acts, and the upper cover is automatically closed by being turned inwards under the action of the spring force of the lower part of the ejector rod;
furthermore, a current limiting switch is connected in series in a circuit for connecting the motor and the robot controller.
The advantage of this patent is:
1) the motor locking mechanism has simple structure: a through square hole is formed in the locking stud, and the end part of the motor driving shaft is a square shaft, so that the locking stud is convenient to machine and manufacture, low in matching precision, high in structural reliability, small in part number and convenient to manufacture and assemble; the locking stud is used as a vulnerable part, so that the replacement is convenient; the manufacturing and maintenance cost is low; 2) the lower part of the locking stud is provided with a helical compression spring, the head of the locking stud protrudes out of the end face of the stud via hole in the main body, after the upper cover is closed and falls down, due to gravity impact and the spring force of the locking stud, the head of the upper end thread of the locking stud is pre-meshed with the threaded hole in the upper cover, the locking stud can be smoothly screwed into the threaded hole in the upper cover after the motor is restarted, and therefore the upper cover is automatically locked through rotation of the motor.
3) The locking studs of the upper cover and the main body are automatically screwed in and screwed down under the control of the motor, so that the closed clamp is firmly clamped on the insulator steel cap, and the locking studs are reversely screwed off by the motor to automatically open the closed clamp; and the upper cover is opened conveniently when the motor reverses, and the robot is controlled simply: the number of turns of the locking bolt is judged according to the time of the timer, so that whether the locking bolt is separated from the threaded hole of the upper cover or not can be judged, and the working efficiency and the working reliability of the robot are improved; the automatic insulator replacing device is suitable for a robot to automatically replace low-value single insulators at high altitude, simple in structure, easy to realize automatic operation and suitable for the robot to automatically complete insulator replacement.
Drawings
FIG. 1 is a front view of a first embodiment closed clamp in a closed position;
FIG. 2 is a top view of the first embodiment of the closed clamp in a closed position;
FIG. 3 is a schematic view showing the open state of the closing jig of the first embodiment;
FIG. 4 is a front view of the drive shaft of the first embodiment;
FIG. 5 is a top plan view of the first embodiment drive shaft;
FIG. 6 is a front view of the locking stud of the first embodiment;
FIG. 7 is a top view of the locking stud of the first embodiment;
FIG. 8 is a schematic view of a second embodiment clamp;
FIG. 9 is a front view of a second embodiment locking stud;
FIG. 10 is a top plan view of a second embodiment lock stud;
FIG. 11 is a front view of a closed clamp of the third embodiment;
FIG. 12 is a top view of a third embodiment of a closed clamp;
FIG. 13 is a schematic view showing an open state of a closed clamp according to a third embodiment;
in the figure: 1-a body; 2-a pin shaft; 3-covering the cover; 4-locking the stud; 5-a drive shaft; 6-a helical compression spring; 7-a coupler; 8, a motor; 9-a firing pin; 10-bumping seat; 11-a pressure spring; 12-a connecting rod; 13-a threaded plug; 14-mandril compression springs; 15-a mandril; 16-hook.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
First, first embodiment
As shown in figures 1-7, which are attached to the drawings of the first embodiment of the closed fixture described in this patent, the closed fixture for replacing insulators in an extra-high voltage transmission line comprises a main body 1 and an upper cover 3, one end of the upper cover 3 is hinged to the main body 1 through a pin shaft 2, the other end of the upper cover 3 is in threaded connection with the main body 1 through a locking stud 4, a cylindrical cavity for clamping an insulator steel cap is formed between the main body 1 and the upper cover 3, so as to form a basic openable closed fixture, the locking stud 4 is unscrewed to open the upper cover 4 when replacing insulators, the insulator steel caps at two sides of the insulators to be replaced are placed in the cylindrical cavity formed by the upper cover 3 and the main body 1, the upper cover 3 is closed, the locking stud 4 is screwed so that the insulator steel caps are tightly clamped in the cylindrical cavity, and the tension at two sides of the insulators to be replaced is loosened by tightening the closed fixtures at two sides through a hydraulic press, thereby replacing the insulator.
For insulators with large size and weight such as newly built insulators of an ultrahigh voltage transmission line, mechanical arms or robots are generally adopted for replacement, so that a motor locking mechanism is arranged at the joint of the upper cover 3 and the locking stud 4 of the main body 1, and a motor 8 of the motor locking mechanism is electrically connected with a robot controller; the locking and unlocking of the upper cover 3 and the main body 1 are realized through robot control. The motor locking mechanism comprises a motor 8, a driving shaft 5, a spiral pressure spring 6 and a locking stud 4, a threaded hole matched with the locking stud 4 is formed in the end part of the upper cover 3, a stud through hole is formed in a corresponding position on the main body 1, the motor 8 is fixed at the lower end of the stud through hole through a screw, and an output shaft of the motor 8 is rigidly connected with the lower end of the driving shaft 5 through a coupler 7; a square hole is axially formed in the center of the lower end of the locking stud 4, a square shaft matched with the square hole is arranged at the upper end of the driving shaft 5, a cylindrical boss is arranged at the lower end of the driving shaft 5, and the locking stud 4 is arranged in the stud through hole; a spiral pressure spring 6 is arranged between the lower end face of the locking stud 4 and the cylindrical step face of the lower end of the driving shaft 5, and the driving shaft 5 rotates to drive the locking stud 4 to rotate.
A cylindrical boss is arranged on the outer circumference of the lower end of the locking stud 4, a stud via hole on the fixture main body 1 is a stepped hole, the upper end of the driving shaft 5 is inserted into a square hole of the locking stud 4 to form movable connection, the diameter of the upper part of the stepped hole of the stud via hole is slightly larger than the external diameter of the thread of the locking stud 4, and the diameter of the lower part of the stepped hole is larger than the diameter of the cylindrical boss at the lower part of the locking stud 4; when the locking device is installed, the locking stud 4 is firstly placed into the stud through hole from the lower end of the stepped hole, the cylindrical boss part at the lower end of the locking stud 4 is partially placed in the large hole at the lower part of the stepped hole, and the motor shaft of the motor 8 is fixedly connected with the boss at the lower end of the driving shaft 5 through the coupler 7; and then the upper end square shaft of the driving shaft 5 is inserted into the square hole of the locking stud 4 from the lower end of the locking stud 4, the spiral spring 6 is arranged between the lower end surface of the locking stud 4 and the cylindrical boss at the lower end of the driving shaft 5, and the motor 8 is fixedly connected to the lower end surface of the stud via hole through a screw. Selecting the length of the helical compression spring 6, inserting the locking stud 4 into the stud via hole from the lower end of the stud via hole, pressing the locking stud 4 on the helical compression spring 6 through self weight, and extruding the upper end surface of the locking stud 4 out of the upper end surface of the stud via hole under the reaction force of the helical compression spring 6; when the upper cover 3 is closed, the spiral pressure spring 6 is compressed due to the gravity and the impact force of the upper cover 3, and the upper end surface of the locking stud 4 is not higher than that of the stud via hole; thus, after the upper cover 3 is closed and the upper end of the locking stud 4 is impacted by the self gravity and the impact force, the upper end thread of the locking stud 4 is pre-engaged at the threaded hole part due to the reaction force of the spiral spring 6 and the self gravity of the upper cover 3, and then the locking stud 4 is continuously screwed into the threaded hole of the upper cover upwards through the rotation of the motor 8, so that the upper cover 3 is automatically locked on the main body 1 through the motor 8.
In order to facilitate the processing of the square hole in the center of the locking stud 4 to be communicated along the axial direction of the locking stud 4, after the upper end of the locking stud 4 is compressed by the force of the spiral pressure spring 6 when the upper cover 3 is closed, the upper end surface of the square shaft at the upper end of the driving shaft 5 is not higher than the upper end surface of the locking stud 4.
The robot realizes the locking and the opening of the upper cover 3 by controlling the positive and negative rotation of the motor 8, a current-limiting switch is connected in series in a circuit connecting the motor 8 and a robot controller, the corresponding relation between the locking force of the locking stud 4 and the forward rotation current value of the motor is determined according to experiments, the current value corresponding to the locking is set as the maximum locking current, when the current of the motor 8 reaches a set value (the maximum locking current), the current-limiting switch acts to stop the motor 8, and the locking of the upper cover 3 is completed; the method comprises the steps that the time for completely withdrawing the locking stud 4 from the threaded hole of the upper cover 3 is determined in advance through experiments, whether the locking stud 4 is completely opened or not is judged, a timer is connected in series in a circuit connecting the motor 8 and the robot controller, the time for reversely rotating the motor 8 is set, the time is longer than the time for completely withdrawing the locking stud 4 from the threaded hole of the upper cover 3, and the motor 8 stops after the set time of the timer is up; when the locking stud 4 is opened, whether the locking stud 4 is completely opened is judged according to the time display of the timer; according to the current limit switch and the timer, the robot can automatically judge whether the upper cover 3 is completely locked or unlocked.
In the embodiment, the locking stud 4 is movably arranged in the stud through hole on the main body 1 and is connected with the main body 1 into a whole, so that the locking stud 4 is not easy to fall off and is convenient to carry and use.
Second, second embodiment:
referring to fig. 8-10, a second embodiment of the closed clamp of this patent is shown, which differs from the first embodiment in the shape of the locking stud and is otherwise identical. For the sake of convenience, in the figures of the second embodiment, the reference numeral 4a of the locking stud is set for distinction.
The lower end of the locking stud 4a in the second embodiment has no cylindrical boss (compared with the first embodiment), the external diameter of the thread of the locking stud 4a is the maximum diameter of the locking stud 4a, the external thread on the locking stud 4a can be a through full thread or a thread at the upper end part, and the lower end part is a cylinder with the external diameter slightly smaller than that of the thread at the upper end part; after the locking stud 4a is inserted into the stud via hole from the upper end of the stud via hole in the main body 1, the upper end surface of the locking stud 4a protrudes out of the upper end surface of the stud via hole under the supporting action of the spiral pressure spring 6, when the upper cover 3 is closed, the spiral pressure spring 6 is further compressed by the locking stud 4a due to the self weight of the upper cover 3 and the impact force generated on the upper end of the locking stud 4a when the upper cover 3 falls, and the upper end surface of the locking stud 4a is not higher than the upper end surface of the stud via hole after the spiral pressure spring 6 is compressed.
In the second embodiment, the locking stud 4a is an independent part, can be immediately put into the upper end of the stud through hole on the main body 1 before being used every time, has a simple structure, does not need to disassemble the motor 8 when being installed and replaced every time, and is convenient to replace and install.
Third, third embodiment:
referring to fig. 11-13, a third embodiment of the present invention is shown, which is different from the first embodiment in that an automatic upper cover turning mechanism is further provided at the hinge of the main body 1 and the upper cover 3 in the third embodiment, and the rest of the structure is completely the same. For convenience of description, in the drawings of the third embodiment, reference numerals 1a of the main body and 3a of the upper cover are set for distinction.
The automatic upper cover turnover mechanism in the third embodiment comprises an elastic striker mechanism and an elastic ejection mechanism, wherein the elastic ejection mechanism comprises an ejector rod 15 arranged in the upper end surface of the main body 1a and an ejector rod pressure spring 14 arranged at the lower end of the ejector rod 15, and the end part of the upper cover 3a is elastically pressed at the upper end of the ejector rod 15 when the upper cover 3a is opened; set up a ejector pin seat hole at main part 1a up end during processing, the ejector pin seat hole is the axis and the up end vertically step hole of main part 1a, the lower hole diameter in step hole is greater than the upper hole diameter, the lower extreme of ejector pin 15 is provided with the cylinder boss, the cylinder boss is arranged in the lower hole in step hole, the upper end of ejector pin 15 passes and stretches out from the up end of main part 1a behind the upper hole in step hole, ejector pin pressure spring 14 is arranged in the 15 lower extremes of ejector pin, the tip is provided with the screw thread under the lower hole in step hole, screw plug 13 shutoff step hole's lower extreme, the roof pressure is at ejector pin pressure spring 14's lower extreme. The ejector rod 15 can elastically move up and down in the ejector rod seat hole, and the ejector rod spring 14 is selected to ensure that the ejector rod 15 moves upwards under the spring force of the ejector rod spring 14 to push the upper cover 3a to turn around the pin shaft 2.
The firing pin 9, the pressure spring 11, the connecting rod 12 and the hook 16 are sequentially arranged in the firing pin seat 10 to form an elastic firing pin mechanism, the firing pin seat 10 is fixed in a groove on the upper end surface of the main body 1a, two jacking holes are respectively arranged on two sides of the groove where the firing pin seat 10 is located, and the firing pin seat 10 is fixed in the groove on the main body 1a through jacking wires on the two sides; the front end of a connecting rod 12 is fixedly connected with the rear end of a firing pin 9, the rear end of the connecting rod 12 is fixedly connected with the lower part of a hook 16, the firing pin 9 is pressed in a firing pin hole cavity of a firing pin seat 10 through a pressure spring 11, and the front end of the firing pin 9 protrudes out of the inner surface of a cylindrical cavity of a main body 1a clamping an insulator steel cap under the action of the pressure spring 11; a hook head is arranged at the end part of the upper cover 3a, when the upper cover 3a is opened, the hook head of the upper cover 3a is hooked on the hook 16, when the insulator steel cap touches the firing pin 9 at the front end of the firing pin 9, the pressure spring 11 is compressed to enable the hook 16 to move backwards, the hook 16 is unhooked from the hook head at the end part of the upper cover 3a, at the moment, the elastic ejection mechanism acts, and the upper cover 3a is automatically closed by being turned inwards under the action of the spring force of the lower part of the ejector rod 15;
the upper cover 3a is fixed relative to the main body 1a when in an opening state, and a firing pin 9 of the elastic firing pin mechanism protrudes out of the inner surface of the cylindrical cavity; when a cylindrical cavity formed by the upper cover 3a and the main body 1a is clamped on a steel cap of the insulator, the steel cap of the insulator touches and extrudes the end part of the firing pin 9, the elastic firing pin mechanism is unlocked, and the upper cover 3a is closed under the pushing of the push rod compression spring 15.
In the third embodiment, the upper cover automatic turnover mechanism is arranged at the hinged position of the main body 1a and the upper cover 3a, so that the robot operation is facilitated, and the automatic function of the fixture is further improved.
Of course, in the third embodiment, the structure of the lock stud 4a in the second embodiment may also be adopted.
Claims (5)
1. Closed fixture for insulator is changed to extra-high voltage transmission line, characterized by: the insulator steel cap clamping device comprises a main body and an upper cover, wherein one end of the upper cover is hinged to the main body, the other end of the upper cover is connected with the main body through a locking stud, and a cylindrical cavity for clamping an insulator steel cap is formed between the main body and the upper cover; a motor locking mechanism is arranged at the connection position of the locking stud of the upper cover and the main body, a motor of the motor locking mechanism is electrically connected with the robot controller, and a timer is connected in series in a connection circuit of the motor and the robot controller;
the motor locking mechanism comprises a motor, a driving shaft, a spiral pressure spring and a locking stud, a threaded hole matched with the locking stud is formed in the end part of the upper cover, a stud through hole is formed in the corresponding position on the main body, the motor is fixed at the lower end of the stud through hole, and an output shaft of the motor is rigidly connected with the lower end of the driving shaft; a square hole which is through along the axial direction is formed in the center of the locking stud, a square shaft which is matched with the square hole is arranged at the upper end of the driving shaft, the locking stud is arranged in the stud through hole, the upper end of the driving shaft is inserted into the square hole of the locking stud to form movable connection, a spiral pressure spring is arranged between the lower end face of the locking stud and the step face of the lower end of the driving shaft, the upper end face of the locking stud protrudes out of the upper end face of the stud through hole, and the driving shaft rotates to drive the locking stud to rotate; when the upper cover is closed, the upper end of the locking stud is stressed to compress the spiral pressure spring, and the upper end surface of the square shaft of the driving shaft is not higher than the upper end surface of the locking stud.
2. The closed fixture for replacing the insulator of the extra-high voltage transmission line according to claim 1, which is characterized in that: a cylindrical boss is arranged on the outer circumference of the lower end of the locking stud, a stud through hole in the clamp main body is a step hole, the diameter of an upper hole of the step hole is slightly larger than the outer diameter of the thread of the locking stud, and the diameter of a lower hole of the step hole is larger than the diameter of the cylindrical boss at the lower part of the locking stud; the locking stud is inserted into the stud through hole from the lower end of the stud through hole, the upper end face of the locking stud protrudes out of the upper end face of the stud through hole under the action of the helical compression spring, and the upper end face of the locking stud is not higher than the upper end face of the stud through hole after the helical compression spring is compressed when the upper cover is closed.
3. The closed fixture for replacing the insulator of the extra-high voltage transmission line according to claim 1, which is characterized in that: the locking stud is inserted into the stud via hole from the upper end of the stud via hole, the upper end face of the locking stud protrudes out of the upper end face of the stud via hole under the action of the spiral pressure spring, and the upper end face of the locking stud is not higher than the upper end face of the stud via hole after the spiral pressure spring compresses when the upper cover is closed.
4. The closed fixture for replacing the insulator of the extra-high voltage transmission line according to claim 1, which is characterized in that: an automatic upper cover turnover mechanism is arranged at the hinged position of the upper cover and the main body, and comprises an elastic firing pin mechanism and an elastic ejection mechanism, wherein the elastic ejection mechanism comprises a top rod arranged in the upper end face of the main body and a top rod pressure spring arranged at the lower end of the top rod, and the end part of the upper cover is elastically pressed at the upper end of the top rod when the upper cover is opened; the firing pin, the pressure spring, the connecting rod and the hook are sequentially arranged in the firing pin seat to form an elastic firing pin mechanism, the firing pin seat is fixed in a groove on the upper end face of the main body, the front end of the connecting rod is fixedly connected with the rear end of the firing pin, the rear end of the connecting rod is fixedly connected with the lower part of the hook, the firing pin is pressed in a firing pin hole cavity of the firing pin seat through the pressure spring, and the front end of the firing pin protrudes out of the inner surface of a cylindrical cavity for clamping an insulator steel cap in the main body under the action of the pressure spring; the hook is arranged at the end part of the upper cover, when the upper cover is opened, the hook of the upper cover is hooked on the hook, when the insulator steel cap touches the firing pin at the front end of the firing pin, the firing pin pressure spring is compressed to enable the hook to move backwards, the hook is unhooked from the hook, at the moment, the elastic ejection mechanism acts, and the upper cover is automatically closed by inwards overturning under the action of the spring force of the lower part of the ejector rod.
5. The closed fixture for replacing the insulator of the extra-high voltage transmission line according to claim 1, which is characterized in that: and a current limiting switch is connected in series in a circuit for connecting the motor with the robot controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122384698.XU CN216215438U (en) | 2021-09-29 | 2021-09-29 | Closed fixture for replacing insulator of ultra-high voltage transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122384698.XU CN216215438U (en) | 2021-09-29 | 2021-09-29 | Closed fixture for replacing insulator of ultra-high voltage transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216215438U true CN216215438U (en) | 2022-04-05 |
Family
ID=80927659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122384698.XU Active CN216215438U (en) | 2021-09-29 | 2021-09-29 | Closed fixture for replacing insulator of ultra-high voltage transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216215438U (en) |
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2021
- 2021-09-29 CN CN202122384698.XU patent/CN216215438U/en active Active
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