CN210040614U - Bolt type connection terminal for resistance tube of external thread connection terminal - Google Patents
Bolt type connection terminal for resistance tube of external thread connection terminal Download PDFInfo
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- CN210040614U CN210040614U CN201920428114.4U CN201920428114U CN210040614U CN 210040614 U CN210040614 U CN 210040614U CN 201920428114 U CN201920428114 U CN 201920428114U CN 210040614 U CN210040614 U CN 210040614U
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Abstract
The utility model relates to a load box technical field, in particular to bolt type binding post that resistance tube used to external screw thread wiring end. The bolt type wiring terminal used by the resistance tube aiming at the external thread wiring terminal is vertically connected with the wiring terminal of the resistance tube along the axial direction, so that the problem that the conventional terminal is directly contacted with the adjacent metal tube connecting sheet can be avoided. And the torque wrench is more convenient to mount, so that the bolt tightening torque can be guaranteed, and the current-carrying capacity of connection of the large-section lead can be guaranteed. And moreover, the bolt type wiring terminal used by the resistance tube aiming at the external thread wiring terminal in different sizes can be manufactured according to the cables and the resistance tubes with different section sizes, and the applicability is realized. In addition, the bolt type wiring terminal used for the resistance tube aiming at the external thread wiring terminal is in compression joint with the conductive inner core of the cable, so that the fixed nut does not need to be worried about to drop in the dismounting and mounting processes, and the maintenance safety is indirectly ensured.
Description
Technical Field
The utility model relates to a load box technical field, in particular to bolt type binding post that resistance tube used to external screw thread wiring end.
Background
The load box is a power detection device, and is mainly used for detecting load performance of a generator, an Uninterruptible Power Supply (UPS), power transmission equipment and the like, and the load box is a main tool for completing tests such as periodic tests, maintenance and the like of the equipment. The resistance tube of the load box needs to be led out to a cable through a wiring terminal, a conventional wiring terminal mounting structure is shown in fig. 1, the wiring terminals a1 and a2 are provided with sleeves at one end for fixing structures such as a high-voltage wire and a sleeve wiring terminal, and a connecting sheet a11 with a mounting hole is arranged at the other end, and bolts B are used for penetrating through the mounting holes of the wiring terminals a1 and a2 together and screwed down to enable the connecting sheets of the two wiring terminals to be in tight contact, so that the electric connection between the structures connected with the two wiring terminals can be realized.
With the complexity of load box equipment, more and more load tubes are needed to be connected with the wiring terminals, the wiring terminals are densely distributed on the same mounting plane, and almost all wires of the cable are in direct contact with the wiring terminals and the connecting sheets of adjacent resistance tubes. In the process of installing and wiring the resistance tube of the load box, the situation that the bolt is not installed in place due to the reasons that the operation space is small, the size of a wrench is not proper and the like easily occurs, so that the two wiring terminals are not connected tightly enough, and the wiring quality is reduced. Moreover, because the wiring terminals on the mounting plane are too dense, the insulating sheath of the cable is easy to contact with the metal connecting sheet or the bolt of the wiring terminal, the insulating sheath of the cable is easy to damage due to long-time contact, particularly, the cable is directly contacted with the edge angle of the adjacent metal tube connecting sheet, the wiring terminal transmits weak current to the cable for a long time, the cable is heated, and short-circuit accidents are easy to occur. In addition, if a common nut is adopted, the small nut is easy to lose hands and fall off when being maintained, disassembled and assembled, and a large number of medium-voltage switching devices are arranged at the mounting position of the wiring terminal of the resistance tube, so that short-circuit accidents are easy to cause due to the fallen small nut.
Disclosure of Invention
The utility model discloses avoid the weak point among the above-mentioned prior art and provide a bolt type binding post that the resistance tube to external screw thread wiring end used convenient to dismantle installation and can save installation space.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a bolt type binding post that resistance tube used to external screw thread wiring end, this binding post connect between cable and resistance tube, including the solenoid that is used for fixing the sleeve of cable side and is used for being connected with the wiring end of resistance tube, the sleeve with the coaxial intercommunication of internal diameter of solenoid just telescopic internal diameter is greater than the internal diameter of solenoid, the electrically conductive inner core of sleeve power supply cable inserts and both crimping, the wiring end of resistance tube is the external screw thread structure, open in the solenoid have with external screw thread structure assorted internal thread, thereby the wiring end of resistance tube is twisted into thereby contact in the solenoid the electrically conductive inner core of cable.
Wherein, the outside of the solenoid is of a polygonal prismatic structure.
Wherein, the polygonal prismatic structure is a regular hexagonal edge.
Wherein, the sleeve is rotatably connected with the solenoid.
The end face of the sleeve, which is close to the solenoid, extends towards the circle center to form an annular baffle plate, the end face of the solenoid, which is close to the sleeve, extends back to the circle center to form an annular clamping plate, and the inner ring diameter of the annular baffle plate is larger than the outer diameter of the solenoid and smaller than the outer ring diameter of the annular clamping plate on the solenoid.
And the heat-shrinkable tube is wrapped outside the bolt type wiring terminal used by the resistance tube aiming at the external thread wiring end.
Wherein the heat shrinkable tube is a PET heat shrinkable hose or a PVC heat shrinkable sleeve.
The utility model has the advantages that:
the bolt type wiring terminal used by the resistance tube aiming at the external thread wiring terminal is vertically connected with the wiring terminal of the resistance tube along the axial direction, so that the problem that the conventional terminal is directly contacted with the adjacent metal tube connecting sheet can be avoided. And the torque wrench is more convenient to mount, so that the bolt tightening torque can be guaranteed, and the current-carrying capacity of connection of the large-section lead can be guaranteed. In addition, the bolt type wiring terminal used for the resistance tube aiming at the external thread wiring terminal is in compression joint with the conductive inner core of the cable, so that the fixed nut does not need to be worried about to drop in the dismounting and mounting processes, and the maintenance safety is indirectly ensured.
Drawings
The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.
Fig. 1 is a schematic view of a mounting structure of a terminal in the prior art.
Fig. 2 is the overall structure diagram of the bolt type connection terminal used for the resistance tube of the external thread connection terminal of the utility model.
Fig. 3 is a schematic view of the installation structure of the bolt type connection terminal used for the resistance tube of the external thread connection terminal of the present invention.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following embodiments and drawings are combined to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 2, the terminal made of conductive metal is connected between the cable 2 and the resistance tube 3, and includes a sleeve 11 for fixing to the cable 2 side and a coil 12 for connection with the terminal of the resistance tube 3. The sleeve 11 is used for inserting the conductive inner core 21 of the cable 2 and crimping the conductive inner core 21 and the conductive inner core, the terminal of the resistance tube 3 is of an external thread structure, an internal thread matched with the external thread structure is arranged in the spiral tube 12, and the terminal of the resistance tube 3 is screwed into the spiral tube 12 to be in contact with the conductive inner core 21 of the cable 2 (see fig. 3). The internal diameters of the sleeve 11 and the coil 12 are coaxially communicated and the internal diameter of the sleeve 11 is larger than the internal diameter of the coil 12. Sleeve 11 and solenoid 12 rotatable coupling, specifically, the terminal surface that sleeve 11 is close to solenoid 12 extends to the centre of a circle and forms annular baffle 111, and solenoid 12 is close to the terminal surface that sleeve 11 extends to the centre of a circle dorsad and forms annular cardboard 121, and the inner ring diameter of annular baffle 111 is greater than solenoid 12's external diameter and is less than the outer ring diameter of annular cardboard 121 on solenoid 12. One end of the solenoid 12, which is far away from the annular clamping plate 121, penetrates into the sleeve 11 from one end of the sleeve 11, which is far away from the annular baffle 111, and penetrates out from the inner ring of the annular baffle 111 of the sleeve 11 until the annular clamping plate 121 of the solenoid 12 is blocked by the annular baffle 111 of the sleeve 11, and the solenoid 12 can freely rotate in the sleeve 11, so that the resistor tube 3 is sent to the position of the conductive inner core 21 of the cable 2.
The process of connecting the cable 2 and the resistance tube 3 using the bolt-type connection terminal 1 is as follows. First, a section of the insulating housing at the end of the cable 2 is stripped (see fig. 1) to expose the inner core of the wire, the conductive core 21 is aligned with the sleeve 11 of the bolt-type terminal 1 and inserted axially along the sleeve 11 (see fig. 2), and then the left end of the sleeve 11 is pressed by a terminal crimping pliers to firmly crimp the sleeve 11 and the conductive core 21, thereby ensuring that the cable 2 and the bolt-type terminal 1 are tightly connected. The bolt type wiring terminal 1 is in compression joint with the wire, so that the fixed nut does not need to be worried about to fall off in the process of dismounting and mounting, and the maintenance safety is indirectly ensured. Then, the external thread terminal of the resistance tube 3 is aligned with the solenoid 12 (see fig. 1) on the right side of the bolt type terminal 1, the internal thread of the solenoid 12 is designed to match with the external thread of the resistance tube terminal 31, the solenoid 12 is rotated by a wrench, so that the resistance tube terminal 31 is continuously moved until the resistance tube terminal abuts against the conductive inner core 21 (see fig. 3) of the cable 2 which is firmly crimped, and the connection tightness between the three is ensured.
The bolt type wiring terminal 1 and the resistance tube wiring terminal 31 are sleeved along the central axis direction of the two, so that the problem that the conventional terminal is directly contacted with the adjacent metal tube connecting sheet can be avoided. And the torque wrench is more convenient to mount, so that the bolt tightening torque can be guaranteed, and the current-carrying capacity of connection of the large-section lead can be guaranteed. Moreover, the bolt type wiring terminal 1 with different sizes can be manufactured according to the cable 2 and the resistance tube 3 with different cross-sectional sizes, and the method has applicability. In addition, because the bolt type wiring terminal 1 is in compression joint with the conductive inner core 21 of the cable 2, the fixed nut does not need to be worried about to fall off in the processes of disassembly and assembly, and the maintenance safety is indirectly ensured.
The outer side of the section of the solenoid 12 penetrating out of the sleeve 11 is of a polygonal prismatic structure, specifically, a regular hexagonal prismatic structure, and is matched with a structure of a conventional wrench, so that the installation is convenient.
In addition, after the cable 2, the bolt type wiring terminal 1 and the resistance tube 3 are connected, a layer of PET heat-shrinkable hose or PVC heat-shrinkable sleeve 11 is wrapped on the bolt type wiring terminal 1 and the position where the bolt type wiring terminal 1 and the other two are connected, so that the insulativity of the connection position is ensured.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The connecting terminal is used for connecting a cable and a resistance tube with an external thread terminal, and is characterized by comprising a sleeve fixed on the side of the cable and a solenoid connected with the terminal of the resistance tube, wherein the sleeve is coaxially communicated with the inner diameter of the solenoid, the inner diameter of the sleeve is larger than that of the solenoid, a conductive inner core of the cable is inserted into the sleeve and is in compression joint with the conductive inner core, an internal thread matched with the external thread is formed in the solenoid, and the terminal of the resistance tube is screwed into the solenoid so as to be in contact with the conductive inner core of the cable.
2. The bolt-type connection terminal for a resistance tube for an externally threaded connection terminal as claimed in claim 1, wherein the outside of said screw tube has a polygonal prismatic structure.
3. A bolt-type terminal for a resistance tube for an externally threaded terminal according to claim 2, wherein said polygonal prismatic structure is a regular hexagonal prism.
4. A bolt-type terminal for a resistance tube for an externally threaded terminal according to claim 1, wherein said sleeve is rotatably coupled to said threaded tube.
5. The bolt-type terminal for a resistance tube of an externally threaded terminal according to claim 4, wherein the end surface of the sleeve near the coil extends toward the center of the circle to form an annular baffle, the end surface of the coil near the sleeve extends away from the center of the circle to form an annular snap-in plate, and an inner ring diameter of the annular baffle is larger than an outer diameter of the coil and smaller than an outer ring diameter of the annular snap-in plate on the coil.
6. The bolt-type terminal for a resistance tube of an externally threaded terminal as claimed in claim 1, wherein the bolt-type terminal for a resistance tube of an externally threaded terminal is externally wrapped with a heat shrink tube.
7. A bolt-type terminal for a resistance tube for an externally threaded terminal as claimed in claim 6 wherein said heat shrink tube is a PET heat shrink hose or PVC heat shrink sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428114.4U CN210040614U (en) | 2019-03-29 | 2019-03-29 | Bolt type connection terminal for resistance tube of external thread connection terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920428114.4U CN210040614U (en) | 2019-03-29 | 2019-03-29 | Bolt type connection terminal for resistance tube of external thread connection terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210040614U true CN210040614U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920428114.4U Active CN210040614U (en) | 2019-03-29 | 2019-03-29 | Bolt type connection terminal for resistance tube of external thread connection terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210040614U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111342447A (en) * | 2020-03-02 | 2020-06-26 | 国网湖北省电力有限公司宜昌供电公司 | Application of novel bypass cable operation in distribution network line ring main unit |
-
2019
- 2019-03-29 CN CN201920428114.4U patent/CN210040614U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111342447A (en) * | 2020-03-02 | 2020-06-26 | 国网湖北省电力有限公司宜昌供电公司 | Application of novel bypass cable operation in distribution network line ring main unit |
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