CN212304654U - Negative pressure type release fitting - Google Patents
Negative pressure type release fitting Download PDFInfo
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- CN212304654U CN212304654U CN202020466948.7U CN202020466948U CN212304654U CN 212304654 U CN212304654 U CN 212304654U CN 202020466948 U CN202020466948 U CN 202020466948U CN 212304654 U CN212304654 U CN 212304654U
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Abstract
The utility model discloses a negative pressure type release gold utensil, including the installation bed frame, the negative pressure air chamber, the spring pipe, the haulage rope, the movable block, the screw stopper, first sheetmetal, the second sheetmetal, heating rod and power supply unit, installation bed frame fixed mounting is on strain insulator tower, the installation bed frame is equipped with mounting groove and installation cavity, the processing of mounting groove bottom has gas passage, the negative pressure air chamber passes through the mounting groove and installs on the installation bed frame, the negative pressure air chamber bottom is connected with gas passage, the installation cavity processing has the through-hole, the through-hole is connected with gas passage, the cavity inner wall of installation cavity and the one end fixed connection of spring pipe, the other end and the movable block of spring pipe are connected, the movable block is installed in the installation cavity, the one end and the negative. The utility model discloses a two strain insulator mechanisms provide tension release mechanism, can effectively reduce wire tension under comparatively abominable environment for strain insulator mechanism's strain resistance nature is better, improves the life of device.
Description
Technical Field
The utility model relates to an electrical equipment technical field especially relates to a negative pressure type release gold utensil.
Background
The tension-resistant wire clamps or the tension-resistant hardware fittings are generally arranged on two sides of the tension-resistant tower and used for relieving the tension of the wires on the two sides of the tension-resistant tower. The tension clamps on two sides of the tension tower bear the tension of the wire, and under adverse working conditions such as strong wind, ice coating and other severe weather conditions, the tension of the wire is too large, the tension clamps are easily damaged due to fatigue, the danger of wire fracture occurs, and the safety of a power grid line is seriously damaged.
For example, an "adjustable strain clamp" disclosed in chinese patent literature has a publication number: CN206922382U, publication date thereof: 23, 2018, 01 and 23 months, which comprises a wire clamp body, wherein the wire clamp body is connected with a connecting piece; the connecting piece comprises a fixed piece extending into the wire clamp body and a movable piece movably connected with the fixed piece; one end of the fixing piece extends into the wire clamp body, and the other end of the fixing piece extends out of the wire clamp body; the part of the fixing piece, which is positioned outside the wire clamp body, is provided with external threads, and a first bolt which is abutted against the end face of the wire clamp body is arranged outside the fixing piece; the moving part is provided with an internal thread hole which corresponds to the external thread, and the moving part realizes the relative movement of the moving part on the fixing part through the matching of the external thread and the internal thread hole. With the controllability of moving part realization strain clamp, but the strain clamp of this application can only be adjusted before the installation, just can't adjust after having installed, simultaneously, carries out the strain insulator of single mechanism wire through passing the fastener body, great to the effort of fastener body, leads to the damage of device easily in adverse circumstances.
Disclosure of Invention
The utility model mainly solves the problem that the strain resistance of the strain clamp is low in the prior art, which results in short service life of the device; the utility model provides a negative pressure type release gold utensil utilizes two strain insulator mechanisms, strengthens the strain resistance nature of strain insulator gold utensil, improves the life of strain insulator gold utensil.
The above technical problem of the present invention can be solved by the following technical solutions: a negative pressure type release hardware fitting comprises an installation base frame, a negative pressure air chamber, a spring tube, a traction rope, a movable block, a threaded plug, a first metal sheet, a second metal sheet, a heating rod and a power supply device, wherein the installation base frame is fixedly installed on a strain tower and is provided with an installation groove and an installation cavity, a gas channel is processed at the bottom of the installation groove, the negative pressure air chamber is installed on the installation base frame through the installation groove, the bottom of the negative pressure air chamber is connected with the gas channel, a through hole is processed in the installation cavity and is connected with the gas channel, the inner wall of the cavity of the installation cavity is fixedly connected with one end of the spring tube, the other end of the spring tube is connected with the movable block, the movable block is installed in the installation cavity, one end of the traction rope is connected with the negative pressure air chamber, the other end of the traction rope penetrates through the gas channel, the threaded plug is installed at a passage opening of a gas passage through threads, a gas hole is formed in the middle of the threaded plug, the heating rod is located in the gas hole, the heating rod is connected with one end of the first metal contact piece, the other end of the first metal contact piece penetrates through a through hole of the installation cavity and is installed on the inner wall of the installation cavity, the power supply device is installed in the movable block, the second metal contact piece is installed on one side, close to the through hole of the installation cavity, of the movable block, the first metal contact piece is matched with the second metal contact piece, and the second metal contact piece is connected with the power supply device. The first strain mechanism is formed through the negative pressure air chamber, when the lead on two sides of the strain tower receives strong wind and causes the lead to stretch, the inflator structure formed by the negative pressure air chamber reduces the tension of the lead, when the environment is severe and the tension of the lead is large, the spring tube and the movable block form a second strain mechanism, the movable block connected with the traction rope through the movable part pulls the spring tube to stretch, so that the tension of the lead is further relieved, the lead of the strain tower can face larger environmental challenge through the two strain mechanisms, the strain mechanism has better tension resistance, meanwhile, the damage of the single strain mechanism in severe environment working is reduced, the service life of the strain mechanism is effectively prolonged, meanwhile, when the temperature is-8 ℃ to 0 ℃, under the condition of certain humidity in the air, the lead and equipment on the strain tower are easy to freeze, and the uncertainty is caused at the freezing position, it is possible to freeze in the position of gas passage inlet port, lead to the negative pressure air chamber can't admit air, then will lead to the unable work of first strain insulator constructs and second strain insulator structure, therefore, position at the gas passage inlet port sets up screw stopper and heating rod, when the gas pocket of screw stopper freezes, if the wire is blown by wind and produces tension, the gas on negative pressure air chamber right side is discharged this moment, left gas volume grow, lead to gaseous pressure to diminish, the left gaseous pressure of movable block passes through gas passage and negative pressure air chamber intercommunication in the installation cavity, consequently, pressure also descends, promote the movable block and move left and the spring tube is tensile, when the movable block supports the installation intracavity wall, first metal contact and second metal contact connection switch on, power supply unit is the heating rod power supply, the heating rod melts the ice in the gas pocket, make first strain insulator structure can work smoothly.
Preferably, the negative pressure air chamber include pipe, moving part, connecting rod, sealing member and connecting piece, the pipe passes through the mounting groove and installs on the installation bed frame, the pipe bottom is connected with gas passage, the moving part is installed in the pipe bottom, sealing member and pipe fixed connection, connecting piece and sealing member butt, the connecting piece is connected with the wire, the one end and the moving part of connecting rod are connected, the other end of connecting rod passes sealing member and connecting piece fixed connection. The structure similar to an inflator is formed by the round pipe, the moving part, the connecting rod, the sealing piece and the connecting piece, and the tension on the lead is effectively reduced by pulling the gasket to move through the connecting rod.
Preferably, the fastening piece comprises two fastening pieces, threaded holes are formed in two sides of each fastening piece, the bottom of each fastening piece is welded to the mounting base frame, each fastening piece is a semi-cylindrical fastening piece, and the diameter of each fastening piece is consistent with the outer diameter of the round pipe. Pass the screw hole through the screw nail and fix the pipe with the mounting plate, prevent to break away from the installation bed frame at the in-process pipe that stretches, effectively fix the device.
Preferably, the sealing element comprises a piston, a protection plate, a first clamping element and a second clamping element, the first clamping element is welded to the upper side of the inner wall of the circular tube, the second clamping element is welded to the lower side of the inner wall of the circular tube, arc-shaped convex blocks are arranged at the bottoms of the first clamping element and the second clamping element, the piston is tightly connected with the first clamping element and the second clamping element respectively, a clamping groove is formed in the bottom of the piston, the arc-shaped convex blocks are matched with the clamping groove, the protection plate is connected with the top of the piston, and a spiral vent groove is formed in the piston from bottom to top. The piston is fixed at the position of the round pipe opening through the first clamping piece and the second clamping piece, the vent groove is arranged to facilitate the work of the first strain mechanism, and the air outlet and the air inlet are convenient to be carried out on the upper portion of the round pipe.
Preferably, the length of the connecting rod is consistent with that of the round pipe. The connecting rod can be conveniently and completely retracted into the round pipe.
Preferably, the movable piece is a circular gasket, and the diameter of the gasket is consistent with the diameter of the circular tube. Preventing the gasket from easily sliding from the bottom of the tube to the orifice.
Preferably, the movable block is a rubber cylinder, the installation cavity is a cylindrical cavity, and the outer diameter of the rubber cylinder is consistent with the inner diameter of the installation cavity. The rubber cylinder is prevented from easily sliding in the installation cavity.
Preferably, the spring tube is a cylindrical spring tube in a natural release state, and the sum of the lengths of the spring tube and the rubber cylinder is less than the length of the installation cavity. The spring tube has certain stiffness coefficient, adapts to the requirement of wire tension, and the sum of the lengths of the spring tube and the rubber cylinder is less than the length of the installation cavity, so that a certain space is reserved, and the spring tube is convenient to stretch.
The utility model has the advantages that: (1) the tension of the lead of the tension tower is reduced through the connecting rod and the spring tube; (2) the tension release mechanism is provided by the double tension resistant mechanisms, so that the tension of the lead can be effectively reduced in a severe environment, the tension resistance of the tension resistant mechanisms is better, and the service life of the device is prolonged; (3) the heating rod can realize automatic ice melting and continuous work in an ice coating state, so that the practicability of the device is improved; (4) the utility model discloses a strain insulator release gold utensil, simple structure, simple to operate is fit for promoting.
Drawings
Fig. 1 is a schematic structural diagram of a strain-type release fitting according to a first embodiment.
Fig. 2 is a partially enlarged view of the strain-type releasing fitting according to the first embodiment.
In the figure, 1, a mounting base frame, 2, a gasket, 3, a round tube, 4, a connecting rod, 5, a first clamping piece, 6, a protection piece, 7, a connecting piece, 8, a piston, 9, a fastening piece, 10, a mounting cavity, 11, a spring tube, 12, a rubber cylinder, 13, a gas channel, 14, a threaded plug, 15, a first metal contact piece, 16, a heating rod and 17 air holes are arranged.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
The first embodiment is as follows: a negative pressure type releasing hardware tool is shown in figure 1 and comprises an installation base frame 1, a round pipe 3, a spring pipe 11, a gasket 2, a traction rope, a connecting rod 4, a piston 8, a protection sheet 6, a first clamping piece 5, a second clamping piece, a rubber cylinder 12, two fastening sheets 9, a connecting piece 7, a thread plug 14, a first metal contact sheet 15, a second metal contact sheet, a heating rod 16 and a power supply device, wherein the installation base frame 1 is provided with an installation hole and is fixedly installed on a strain tower through the installation hole, the installation base frame 1 is provided with an installation groove and an installation cavity 10, the bottom of the installation groove is provided with a gas channel 13, the round pipe 3 is installed on the installation base frame 1 through the installation groove, the bottom of the round pipe 3 is connected with the gas channel 13, the gasket 2 is provided with the bottom of the round pipe 3, the first clamping piece 5 is welded with the upper side of the inner wall of the round pipe 3, the piston 8 is respectively and tightly connected with the first clamping piece 5 and the second clamping piece, the bottom of the piston 8 is provided with a clamping groove, an arc-shaped convex block is matched with the clamping groove, a protective sheet is connected with the top of the piston 8, the piston 8 is provided with a spiral vent groove from bottom to top, the connecting piece 7 is abutted against the protective sheet 6, the connecting piece 7 is connected with a lead, one end of the connecting rod 4 is connected with the gasket 2, the other end of the connecting rod 4 passes through the piston 8 and is connected with the connecting piece 7, a through hole is processed in the installation cavity 10 and is connected with the gas channel 13, the inner wall of the cavity of the installation cavity 10 is fixedly connected with one end of the spring tube 11, the other end of the spring tube 11 is connected with the rubber cylinder 12, the rubber cylinder 12 is movably installed in the installation cavity 10, the rubber cylinder 12 is connected with one end of, the bottom of the fastening piece 9 is welded with the mounting pedestal 1, the gas channel 13 is provided with a thread, the thread plug 14 is mounted at the channel opening of the gas channel 13 through the thread, the middle part of the thread plug 14 is provided with an air hole 17, the heating rod 16 is positioned in the air hole 17, the heating rod 16 is connected with one end of the first metal contact piece 15, the first metal contact piece 15 is an arc-shaped metal contact piece, the other end of the first metal contact piece 15 passes through the through hole of the mounting cavity 10 and is mounted on the inner wall of the mounting cavity 10, the power supply device is mounted in the rubber cylinder 12, the second metal contact piece is mounted on one side of the rubber cylinder 12 close to the through hole of the mounting cavity 10, the first metal contact piece 15 is matched with the second metal contact piece, the second metal contact piece is connected with the power supply device, the fastening piece 9 is a semi-cylindrical fastening piece 9, the diameter of the fastening piece 9 is consistent, the gasket 2 is circular, the diameter of the gasket 2 is consistent with the inner diameter of the circular tube 3, the mounting cavity 10 is a cylindrical cavity, the outer diameter of the rubber cylinder 12 is consistent with the inner diameter of the mounting cavity 10, the spring tube 11 is a cylindrical spring tube 11 in a natural release state, and the sum of the lengths of the spring tube 11 and the rubber cylinder 12 is smaller than the length of the mounting cavity 10.
In the specific application, a negative pressure air chamber is formed by the round tube 3, a mode similar to an inflator is formed by the negative pressure air chamber, the gasket 2, the connecting rod 4, the piston 8, the protection sheet 6, the first clamping piece 5, the second clamping piece, the two fastening sheets 9 and the connecting piece 7, a first strain resisting mechanism is formed, an air channel 13 is arranged for air outlet and air inlet at the bottom of the round tube 3, a ventilation groove of the piston 8 is arranged for air outlet and air inlet at the upper part of the round tube 3, the function of the inflator is realized, the gasket 2 and the traction rope are connected with the rubber cylinder 12 and the spring tube 11 in the installation cavity 10, the spring tube 11 and the rubber cylinder 12 form a second strain resisting mechanism, the connecting piece 7 is fixedly connected with the strain resisting tower through an installation hole in the installation base frame 1, the connecting piece 7 is connected with a lead, wire pulling connecting piece 7, make connecting piece 7 receive outside pulling force, connecting piece 7 pulling connecting rod 4 drives gasket 2 and moves outward, the haulage rope has certain length, when gasket 2 moves outward and surpasss 3 half of pipe in the hour, rubber cylinder 12 in installation cavity 10 begins the atress, gasket 2 is after one section distance of pulling out outward, the wire contracts, connecting piece 7 is not receiving past outside pulling force, then gasket 2 is no longer moving outward, the tension of wire has effectively been alleviated, if at the great condition of wind-force, gasket 2 can pull rubber cylinder 12 and move, make spring tube 11 stretch, further reduce tension for the wire, it alleviates tension to carry out the tension through two strain insulator mechanisms, make the device have bigger toughness, greatly reduced the loss degree of device, the life of device is prolonged.
When the temperature is-8 ℃ to 0 ℃, and the humidity in the air is constant, the wire and the equipment on the tension tower are easy to freeze, and the freezing position has uncertainty, so that the wire may freeze at the position of the air inlet 17 of the air channel 13, and the circular tube 3 cannot be air-fed, so that the first tension mechanism and the second tension mechanism cannot work, therefore, the screw plug 14 and the heating rod 16 are arranged at the position of the air inlet 17 of the air channel 13, when the air inlet 17 of the screw plug 14 freezes, if the wire is blown by wind to generate tension, the connecting rod 4 drives the gasket 2 to move, at this time, the air on the right side of the gasket 2 in the circular tube 3 is discharged, the air on the left side becomes large in volume, the air pressure becomes small, the air pressure on the left side of the rubber cylinder 12 in the installation cavity 10 is communicated with the circular tube 3 through the air channel 13, and therefore, the pressure also drops, and the rubber, when rubber cylinder 12 supported the installation cavity 10 inner wall, first metal contact 15 and second metal contact were connected and are switched on, and power supply unit was 16 supplies power for the heating rod, and the heating rod 16 melts the ice in the gas pocket 17 for first strain insulator mechanism can work smoothly, makes the utility model discloses a strain insulator type release gold utensil can adapt to more environment, and the practicality is bigger.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (8)
1. A negative pressure type release fitting is characterized by comprising
The device comprises an installation base frame, a negative pressure air chamber, a spring tube, a traction rope, a movable block, a threaded plug, a first metal sheet, a second metal sheet, a heating rod and a power supply device, wherein the installation base frame is fixedly installed on a strain tower and is provided with an installation groove and an installation cavity, a gas channel is processed at the bottom of the installation groove, the negative pressure air chamber is installed on the installation base frame through the installation groove, the bottom of the negative pressure air chamber is connected with the gas channel, a through hole is processed in the installation cavity and is connected with the gas channel, the inner wall of the cavity of the installation cavity is fixedly connected with one end of the spring tube, the other end of the spring tube is connected with the movable block, the movable block is installed in the installation cavity, one end of the traction rope is connected with the negative pressure air chamber, the other end of the traction rope penetrates through the gas channel and is connected with the movable block, the gas, the thread plug middle part is equipped with the gas pocket, the heating rod is located the gas pocket, the heating rod is connected with the one end of first metal contact, the through-hole that the other end of first metal contact passed the installation cavity is installed on the inner wall of installation cavity, power supply unit installs in the movable block, second metal contact is installed in one side that the movable block is close to the installation cavity through-hole, first metal contact and second metal contact phase-match, second metal contact is connected with power supply unit.
2. The negative pressure type releasing hardware fitting of claim 1, wherein the negative pressure air chamber comprises a circular tube, a moving part, a connecting rod, a sealing part and a connecting part, the circular tube is mounted on the mounting base frame through a mounting groove, the bottom of the circular tube is connected with the gas channel, the moving part is mounted at the bottom of the circular tube, the sealing part is fixedly connected with the circular tube, the connecting part is abutted to the sealing part, the connecting part is connected with a lead, one end of the connecting rod is connected with the moving part, and the other end of the connecting rod penetrates through the sealing part and is fixedly connected with the connecting part.
3. The negative pressure type releasing fitting of claim 2, further comprising a fastening piece, wherein the fastening piece comprises two fastening pieces, threaded holes are formed in two sides of each of the two fastening pieces, the bottom of each fastening piece is welded to the mounting base frame, each fastening piece is a semi-cylindrical fastening piece, and the diameter of each fastening piece is consistent with the outer diameter of the round pipe.
4. The negative pressure type releasing hardware tool according to claim 2 or 3, wherein the sealing element comprises a piston, a protection plate, a first clamping element and a second clamping element, the first clamping element is welded to the upper side of the inner wall of the circular tube, the second clamping element is welded to the lower side of the inner wall of the circular tube, arc-shaped convex blocks are arranged at the bottoms of the first clamping element and the second clamping element, the piston is tightly connected with the first clamping element and the second clamping element respectively, a clamping groove is formed in the bottom of the piston, the arc-shaped convex blocks are matched with the clamping groove, the protection plate is connected with the top of the piston, and the piston is provided with a spiral vent groove from bottom to top.
5. The negative pressure type release fitting according to claim 2 or 3, wherein the length of the connecting rod is consistent with that of the circular tube.
6. The negative pressure type release fitting according to claim 2 or 3, wherein the moving member is a circular spacer, and the diameter of the spacer is the same as the inner diameter of the circular tube.
7. The negative pressure type release fitting of claim 1 or 2, wherein the movable block is a rubber cylinder, the installation cavity is a cylindrical cavity, and the outer diameter of the rubber cylinder is the same as the inner diameter of the installation cavity.
8. The negative pressure type releasing fitting of claim 7, wherein the spring tube is a cylindrical spring tube in a natural releasing state, and the sum of the lengths of the spring tube and the rubber cylinder is smaller than the length of the installation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466948.7U CN212304654U (en) | 2020-04-02 | 2020-04-02 | Negative pressure type release fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466948.7U CN212304654U (en) | 2020-04-02 | 2020-04-02 | Negative pressure type release fitting |
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| Publication Number | Publication Date |
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| CN212304654U true CN212304654U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020466948.7U Active CN212304654U (en) | 2020-04-02 | 2020-04-02 | Negative pressure type release fitting |
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| CN (1) | CN212304654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115377909A (en) * | 2022-08-04 | 2022-11-22 | 苗金雨 | Tension-resistant wire clamp for traction wire |
-
2020
- 2020-04-02 CN CN202020466948.7U patent/CN212304654U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115377909A (en) * | 2022-08-04 | 2022-11-22 | 苗金雨 | Tension-resistant wire clamp for traction wire |
| CN115377909B (en) * | 2022-08-04 | 2024-05-10 | 湖北恒东电力设备有限公司 | Tension-resistant wire clamp for traction wire |
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