CN210273289U - PT arrester handcart - Google Patents
PT arrester handcart Download PDFInfo
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- CN210273289U CN210273289U CN201921233082.9U CN201921233082U CN210273289U CN 210273289 U CN210273289 U CN 210273289U CN 201921233082 U CN201921233082 U CN 201921233082U CN 210273289 U CN210273289 U CN 210273289U
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- grounding
- guide rail
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 description 7
- 238000002955 isolation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model provides a PT arrester handcart, which comprises a voltage transformer, an arrester and a fuse, wherein the voltage transformer, the arrester and the fuse are integrated and arranged in the handcart, and the PT arrester handcart also comprises a propelling locking mechanism, a pedal mechanism, a pulley mechanism and a grounding mechanism, the pulley mechanism is arranged at the bottom of the handcart, the pulley mechanism is arranged on a traction guide rail, and the grounding mechanism is in contact connection with the traction guide rail; the traction guide rail is arranged at the bottom of the handcart, the propulsion locking mechanism is arranged inside the handcart, and the pedal mechanism extends out of the outside of the handcart. The utility model provides a PT arrester handcart for when overhauing the PT cabinet, convenient operation has also reduced the potential safety hazard simultaneously, the cost is reduced.
Description
Technical Field
The utility model relates to a cubical switchboard handcart field especially relates to a PT arrester handcart.
Background
Railway zoning station, the used PT cabinet of traction, when meetting PT outage maintenance, still mainly use the mode of configuration fixed isolator, earthing switch to realize at present, but this kind of maintenance mode exists following inconvenience and hidden danger:
(1) the PT is fixedly installed, and when the PT, a fuse, a live display, a lightning arrester and other components are installed and maintained, maintenance personnel need to enter a live interval in a cabinet, so that the space is narrow and inconvenient, and meanwhile, the internal high-voltage is electrified, so that a large potential safety hazard exists;
(2) an isolating switch and a grounding switch are required to be configured in the system scheme, so that extra cost is increased;
(3) the cabinet body has larger overall dimension and higher cost.
Therefore, it is necessary to solve the technical problems of inconvenient operation and great potential safety hazard when the maintenance personnel perform maintenance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a PT arrester handcart has solved inconvenient and the great technical problem of potential safety hazard of operation when overhauing the PT cabinet in the past, has reduced the potential safety hazard, the cost is reduced.
A PT arrester handcart comprises a voltage transformer, an arrester and a fuse, wherein the voltage transformer, the arrester and the fuse are integrally arranged in the handcart, the PT arrester handcart further comprises a propelling and locking mechanism, a pedal mechanism, a pulley mechanism and a grounding mechanism, the pulley mechanism and the grounding mechanism are arranged at the bottom of the handcart, the pulley mechanism is arranged on a traction guide rail, and the grounding mechanism is in contact connection with the traction guide rail;
the traction guide rail is arranged at the bottom of the handcart, the propulsion locking mechanism is arranged inside the handcart, and the pedal mechanism extends out of the outside of the handcart.
The PT arrester handcart designed by the device is a reliable, convenient, simple and easy-to-operate separation and combination device formed by welding an integrated vehicle body, a pulley mechanism, a traction guide rail, a propulsion locking mechanism, a guide rail limiting mechanism and a grounding mechanism;
the handcart propelling locking mechanism and the guide rail limiting mechanism realize reliable switching of the working position, the experimental position and the overhauling position of the handcart, and facilitate power transmission, overhauling, and replacement of accessories such as later-stage fuses.
The pushing locking mechanism is used for limiting the handcart, the pedal mechanism is used for opening and closing the pushing locking mechanism, and the traction mechanism is used for assisting the handcart to move.
The pedal mechanism comprises a pedal plate, a connecting rod and a support, wherein one end of the connecting rod is connected with one end of the pedal plate, the support is connected with one end of the connecting rod in an articulated mode, the support is fixedly arranged on the inner side face of the handcart, one end of the pedal plate is arranged inside the handcart, the other end of the handcart penetrates out of the handcart, and the other end of the connecting rod is connected with the propulsion locking mechanism.
When the foot pedal is stepped on by a foot, the outer end of the foot pedal moves downwards, meanwhile, the other end of the connecting rod is driven by the foot pedal to move upwards, and the other end of the connecting rod drives the pushing locking mechanism to move.
The propelling and locking mechanism comprises a guide plate, a locking block arranged at the upper end of the guide plate, a guide rod vertically penetrating through the guide plate and a spring arranged on the guide rod, wherein a sliding groove is formed in one side, close to the locking block, of the guide rod, an embedded block on the locking block is arranged in the sliding groove, an upper shaft shoulder and a lower shaft shoulder are arranged at the lower end part of the guide rod, two ends of the spring are respectively abutted against the guide plate and the upper shaft shoulder, and the lower shaft shoulder is in contact connection with the other end of the connecting rod;
the bottom end of the guide rod is movably arranged in a positioning hole formed in the positioning block, and the positioning block is embedded in the traction guide rail.
The front end of the locking block is inserted into the guide rod longitudinal sliding groove, so that the guide rod longitudinal sliding direction is ensured. The positioning block is embedded on the traction guide rail, and the positioning hole is formed in the upper portion of the positioning block to ensure that the guide rod is smoothly inserted and limited. When the hand cart is operated, the pedal mechanism is stepped to push the guide rod of the locking mechanism to lift, and the spring on the upper part of the guide rod stores energy and compresses. The handcart moves along the traction guide rail, and the guide rod slides along the sliding chute; the grounding mechanism slides along the grounding copper bar on the traction guide rail, so that the reliable grounding of the shell of the handcart is ensured. When the guide rod slides to the position of the positioning block corresponding to the experimental and operating positions, the guide rod is extruded by the spring to fall down and is inserted into the positioning hole of the positioning block to limit and lock the handcart.
The traction guide rail comprises a grounding guide rail, a limiting mechanism for limiting the movement of the pulley mechanism and two positioning blocks for limiting the positions of the guide rods, and the two positioning blocks are arranged at intervals;
the grounding guide rail is also connected with the pulley mechanism and the grounding mechanism.
The pulley mechanism comprises a plurality of pulleys arranged at the bottom of the handcart, and the pulleys are arranged on the grounding guide rail;
the grounding mechanism is connected with the grounding copper bar on the grounding lead rail in a sliding manner.
The limiting mechanism comprises a horizontally placed threaded cylinder, a threaded rod penetrating through the threaded cylinder, a limiting block arranged at one end of the threaded rod, a nut arranged at the other end of the threaded rod and a spring arranged on the threaded rod, one end of the spring is abutted against the limiting block, the other end of the spring is abutted against the threaded cylinder, and the nut is abutted against the threaded cylinder;
the limiting block is movably contacted with the pulley mechanism, and the threaded cylinder is fixedly arranged on the grounding guide rail.
One end of the lightning arrester is connected with the fuse, the other end of the fuse is connected with the voltage transformer, the lightning arrester is connected with the moving contact through the first cantilever, the voltage transformer is connected with the grounding moving contact through the second cantilever, the moving contact is movably connected with the fixed contact, and the grounding moving contact is movably connected with the grounding fixed contact.
The voltage transformer, the fuse and the lightning arrester are integrated on the movable handcart body, and the isolation switch is connected into the engagement of the movable contact and the fixed contact, so that an isolation switch device is omitted, the size of a cabinet body is reduced, and the cost is reduced;
the grounding switch is changed into grounding movable contact and grounding fixed contact to be occluded, and meanwhile, the handcart is provided with a grounding mechanism, so that the handcart is ensured to be reliably contacted with the guide rail all the time in the moving process;
the grounding static contact is connected with the ground network, so that the overlarge voltage to ground is avoided.
The arrester the first cantilever the moving contact the static contact all sets up the handcart top, voltage transformer the second cantilever the ground connection moving contact the ground connection static contact all sets up the handcart bottom.
Still be provided with electrified display in the handcart, electrified display with the arrester is connected.
The utility model discloses reach following effect of showing:
(1) the utility model is provided with the moving contact and the static contact as well as the grounding moving contact and the grounding static contact, and respectively replaces an isolating switch and a grounding switch, thereby avoiding the operation of a manual switch and reducing the potential safety hazard;
(2) be provided with pedal mechanism and propulsion locking mechanical system to and set up the pulley mechanism and the ground mechanism of handcart bottom can make the handcart along ground connection approach rail roll-off, avoid people to get into operation in the narrow and small space, very big the operation of having made things convenient for.
Drawings
Fig. 1 is the embodiment of the utility model provides an in the front view of PT arrester handcart.
Fig. 2 is the embodiment of the utility model provides an in the embodiment right side view of PT arrester handcart.
Wherein the reference numerals are: 1. a grounding static contact; 2. a grounding moving contact; 3. a guide rail limiting mechanism; 4. grounding the guide rail; 5. positioning blocks a; 6. a traction guide rail; 7. a positioning block b; 8. a pedal mechanism; 9. a propulsion locking mechanism; 10. a charged display; 11. a handcart; 12. a lightning arrester; 13. a moving contact; 14. static contact; 15. a fuse; 16. a voltage transformer; 17. a grounding mechanism; 18. a pulley mechanism; 19. a handle is operated.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is described below by way of specific embodiments.
Referring to fig. 1 and 2, a PT arrester handcart comprises a voltage transformer 16, an arrester 12 and a fuse 15, wherein the voltage transformer 16, the arrester 12 and the fuse 15 are integrally arranged in the handcart 11, the PT arrester handcart further comprises a propelling locking mechanism 9 for limiting the handcart 11, a pedal mechanism 8 for opening and closing the propelling locking mechanism 9, a pulley mechanism 18 and a grounding mechanism 17, the pulley mechanism 18 is arranged at the bottom of the handcart 11, the pulley mechanism 18 is arranged on a traction guide rail 6 for assisting the handcart 11 to move, and the grounding mechanism 17 is in contact connection with the traction guide rail 6;
the traction guide rail 6 is arranged at the bottom of the handcart 11, the propulsion locking mechanism 9 is arranged inside the handcart 11, and the pedal mechanism 8 extends out of the handcart 11.
The PT arrester handcart designed by the device is a reliable, convenient, simple and easy-to-operate separation and combination device formed by welding an integrated vehicle body, a pulley mechanism 18, a traction guide rail 6, a propulsion locking mechanism 9, a guide rail limiting mechanism 3 and a grounding mechanism 17;
the handcart 11 is pushed into the locking mechanism 9 and the guide rail limiting mechanism 3, so that the reliable switching of the working position, the experimental position and the overhauling position of the handcart 11 is realized, and the power transmission, the overhauling and the replacement of accessories such as a later-stage fuse 15 are facilitated.
The pushing locking mechanism is used for limiting the handcart, the pedal mechanism is used for opening and closing the pushing locking mechanism, and the traction mechanism is used for assisting the handcart to move.
The pedal mechanism 8 comprises a pedal, a connecting rod with one end connected with one end of the pedal and a support hinged with one end of the connecting rod, the support is fixedly arranged on the inner side surface of the handcart 11, one end of the pedal is arranged inside the handcart 11, the other end of the pedal penetrates out of the outer side of the handcart 11, and the other end of the connecting rod is connected with the propelling locking mechanism 9.
When the foot pedal is stepped on by a foot, the outer end of the foot pedal moves downwards, meanwhile, the other end of the connecting rod is driven by the foot pedal to move upwards, and the other end of the connecting rod drives the pushing locking mechanism 9 to move.
The propelling and locking mechanism 9 comprises a guide plate, a locking block arranged at the upper end of the guide plate, a guide rod vertically penetrating through the guide plate and a spring arranged on the guide rod, wherein one side of the guide rod close to the locking block is provided with a chute, an embedded block on the locking block is arranged in the chute, the lower end part of the guide rod is provided with an upper shaft shoulder and a lower shaft shoulder, two ends of the spring are respectively abutted against the guide plate and the upper shaft shoulder, and the lower shaft shoulder is in contact connection with the other end of the connecting rod;
the bottom end of the guide rod is movably arranged in a positioning hole arranged on a positioning block, and the positioning block is embedded on the traction guide rail 6.
The front end of the locking block is inserted into the guide rod longitudinal sliding groove, so that the guide rod longitudinal sliding direction is ensured. The positioning block is embedded on the traction guide rail 6, and the upper part of the positioning block is provided with a positioning hole to ensure that the guide rod is smoothly inserted and limited. When the handcart 11 is operated, the pedal mechanism 8 is stepped to push the guide rod of the locking mechanism 9 to be lifted, and the spring on the upper part of the guide rod stores energy and compresses. The handcart 11 moves along the traction guide rail 6, and the guide rod slides along the sliding groove; the grounding mechanism 17 slides along the grounding copper bar on the traction guide rail 6, so that the shell of the handcart 11 is reliably grounded. When the guide rod slides to the position of the positioning block corresponding to the experiment and operation positions, the guide rod is extruded by the spring to fall down and is inserted into the positioning hole of the positioning block to limit and lock the handcart 11.
The two positioning blocks are respectively a positioning block a5 and a positioning block b7, when the handcart is not overhauled, the bottom of the guide rod is connected with the positioning block a5, when the electric appliance is overhauled, the handcart needs to be pulled out, and at the moment, the bottom of the guide rod is connected with the positioning block b 7.
The traction guide rail 6 comprises a grounding guide rail 4, a limiting mechanism for limiting the movement of the pulley mechanism 18 and two positioning blocks for limiting the positions of the guide rods, wherein the two positioning blocks are arranged at intervals;
the grounding rail 4 is also connected to a pulley mechanism 18 and a grounding mechanism 17.
The pulley mechanism 18 comprises a plurality of pulleys arranged at the bottom of the handcart 11, and the pulleys are arranged on the grounding guide rail 4;
the grounding mechanism 17 is slidably connected with the grounding copper bar on the grounding lead rail 4.
The limiting mechanism comprises a horizontally placed threaded cylinder, a threaded rod penetrating through the threaded cylinder, a limiting block arranged at one end of the threaded rod, a nut arranged at the other end of the threaded rod and a spring arranged on the threaded rod, one end of the spring is abutted against the limiting block, the other end of the spring is abutted against the threaded cylinder, and the nut is abutted against the threaded cylinder;
the limiting block is movably contacted with the pulley mechanism 18, and the thread cylinder is fixedly arranged on the grounding guide rail 4.
One end of an arrester 12 is connected with a fuse 15, the other end of the fuse 15 is connected with a voltage transformer 16, the arrester 12 is connected with a moving contact 13 through a first cantilever, the voltage transformer 16 is connected with a grounding moving contact 2 through a second cantilever, the moving contact 13 is movably connected with a static contact 14, and the grounding moving contact 2 is movably connected with a grounding static contact 1.
The voltage transformer 16, the fuse 15 and the lightning arrester 12 are integrated on the body of the movable handcart 11, and the isolation switch is connected into the occlusion of the movable contact 14 and the static contact 14, so that an isolation switch device is eliminated, the size of a cabinet body is reduced, and the cost is reduced;
the grounding switch is changed to be connected to ground the movable contact and the fixed contact 14 to be occluded, and meanwhile, the handcart 11 is provided with the grounding mechanism 17, so that the handcart 11 is ensured to be reliably contacted with the guide rail all the time in the moving process;
wherein, grounding static contact 1 is connected with the earth screen, avoids too big to ground voltage.
The lightning arrester 12, the first cantilever, the moving contact 13 and the static contact 14 are all arranged at the top end of the handcart 11, and the voltage transformer 16, the second cantilever, the grounding moving contact 2 and the grounding static contact 1 are all arranged at the bottom end of the handcart 11.
The handcart 11 is also provided with an electrified display 10, and the electrified display 10 is connected with the lightning arrester 12.
The specific working process is as follows:
welding an integrated vehicle body framework, and installing 4 sets of pulley mechanisms 18, 1 set of pedal mechanisms 8, 1 set of handcart propelling and locking mechanisms and a set of grounding mechanisms 17 to form a vehicle body part;
the handcart 11 is welded with an integrated guide rail, and is provided with a set of grounding guide rail 4, two sets of pulley limiting mechanisms and two sets of positioning blocks in a matching way to form a traction guide rail 6;
the voltage transformer 16, the fuse 15, the live display 10 and the lightning arrester 12 are installed on the assembled vehicle body;
a moving contact 13 and a grounding moving contact 2 are arranged on the bus side of the vehicle body;
a bus side fixed contact 14 and a grounding fixed contact 1 are installed on a bracket of the traction guide rail 6 and are grounded with a ground net;
a front panel of the handcart 11 is provided with an observation window protective cover and an operating handle 19;
through the steps, complete vehicle body assembly is realized; when the pedal mechanism 8 is pedaled, the locking mechanism is lifted up and automatically locked to the experimental position and the working position; the voltage transformer 16, the fuse 15, the lightning arrester 12 and the like can be pulled out for live interval maintenance, and an isolating switch and a grounding switch are omitted.
The utility model has the advantages of it is following:
(1) isolation and grounding switches are optimized and omitted, the size of the cabinet body is reduced, and the cost is saved;
(2) PT is pulled out of the cabinet body for maintenance and separated from electrified space, so that the safety and reliability are realized;
(3) the size of the prefabricated cabin is reduced, the manufacturing cost is reduced, and the investment cost of a user is reduced;
(4) the heat dissipation requirement of the equipment is realized by a natural ventilation and fan ventilation mode, an air conditioning system is omitted, and the cost is reduced;
(5) and the reliable monitoring of the running of the reactive compensation equipment is realized.
The technical features that the utility model has not been described can be realized through or adopt prior art, and no longer give unnecessary details here, and of course, the above-mentioned explanation is not right the utility model discloses a restriction, the utility model discloses also not only be limited to the above-mentioned example, ordinary skilled person in this technical field is in the utility model discloses a change, modification, interpolation or replacement made in the essential scope also should belong to the utility model discloses a protection scope.
Claims (9)
1. A PT arrester handcart comprises a voltage transformer, an arrester and a fuse, wherein the voltage transformer, the arrester and the fuse are integrally arranged in the handcart;
the traction guide rail is arranged at the bottom of the handcart, the propulsion locking mechanism is arranged inside the handcart, and the pedal mechanism extends out of the outside of the handcart.
2. The PT arrester handcart of claim 1, wherein the pedal mechanism comprises a pedal, a connecting rod with one end connected with one end of the pedal, and a support hinged to one end of the connecting rod, the support is fixedly arranged on the inner side surface of the handcart, one end of the pedal is arranged inside the handcart, the other end of the pedal penetrates out of the outside of the handcart, and the other end of the connecting rod is connected with the propelling and locking mechanism.
3. The PT arrester handcart of claim 2, wherein the propelling locking mechanism comprises a guide plate, a locking block arranged at the upper end of the guide plate, a guide rod vertically penetrating through the guide plate and a spring arranged on the guide rod, wherein one side of the guide rod close to the locking block is provided with a sliding groove, an embedded block on the locking block is arranged in the sliding groove, the lower end part of the guide rod is provided with an upper shaft shoulder and a lower shaft shoulder, two ends of the spring are respectively abutted against the guide plate and the upper shaft shoulder, and the lower shaft shoulder is in contact connection with the other end of the connecting rod;
the bottom end of the guide rod is movably arranged in a positioning hole formed in the positioning block, and the positioning block is embedded in the traction guide rail.
4. The PT arrester handcart of claim 3, wherein the traction guide rail comprises a grounding guide rail, a limiting mechanism for limiting the movement of the pulley mechanism and two positioning blocks for limiting the position of the guide rod, and the two positioning blocks are arranged at intervals;
the grounding guide rail is also connected with the pulley mechanism and the grounding mechanism.
5. The PT arrester handcart of claim 4, wherein the pulley mechanism comprises a plurality of pulleys disposed at the bottom of the handcart, the plurality of pulleys being disposed on the grounding guide rail;
the grounding mechanism is connected with the grounding copper bar on the grounding lead rail in a sliding manner.
6. The PT arrester handcart of claim 5, wherein the limiting mechanism comprises a horizontally placed threaded cylinder, a threaded rod penetrating through the threaded cylinder, a limiting block arranged at one end of the threaded rod, a nut arranged at the other end of the threaded rod, and a spring arranged on the threaded rod, wherein one end of the spring abuts against the limiting block, the other end of the spring abuts against the threaded cylinder, and the nut abuts against the threaded cylinder;
the limiting block is movably contacted with the pulley mechanism, and the threaded cylinder is fixedly arranged on the grounding guide rail.
7. The PT arrester handcart of claim 1, wherein arrester one end with the fuse is connected, the fuse other end with voltage transformer is connected, the arrester passes through first cantilever connection moving contact, voltage transformer passes through second cantilever connection ground connection moving contact, moving contact and static contact swing joint, ground connection moving contact and ground connection static contact swing joint.
8. The PT arrester handcart of claim 7, wherein the arrester, the first cantilever, the moving contact, the static contact all set up the handcart top, voltage transformer, the second cantilever, the ground moving contact, the ground static contact all sets up the handcart bottom.
9. The PT arrester handcart of any one of claims 1-8, wherein a live display is further arranged in the handcart, and the live display is connected with the arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921233082.9U CN210273289U (en) | 2019-08-01 | 2019-08-01 | PT arrester handcart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921233082.9U CN210273289U (en) | 2019-08-01 | 2019-08-01 | PT arrester handcart |
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| Publication Number | Publication Date |
|---|---|
| CN210273289U true CN210273289U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921233082.9U Active CN210273289U (en) | 2019-08-01 | 2019-08-01 | PT arrester handcart |
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| CN (1) | CN210273289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114123005A (en) * | 2021-12-22 | 2022-03-01 | 上海中科益海船舶科技有限公司 | Voltage transformer handcart and using method thereof and power distribution cabinet |
-
2019
- 2019-08-01 CN CN201921233082.9U patent/CN210273289U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114123005A (en) * | 2021-12-22 | 2022-03-01 | 上海中科益海船舶科技有限公司 | Voltage transformer handcart and using method thereof and power distribution cabinet |
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