CN212811141U - Special line ball pad of explosion-proof equipment and pressure pile formula wiring are chewed - Google Patents
Special line ball pad of explosion-proof equipment and pressure pile formula wiring are chewed Download PDFInfo
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- CN212811141U CN212811141U CN202020682152.5U CN202020682152U CN212811141U CN 212811141 U CN212811141 U CN 212811141U CN 202020682152 U CN202020682152 U CN 202020682152U CN 212811141 U CN212811141 U CN 212811141U
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- pad
- wire pressing
- pressing pad
- arc
- terminal
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- 239000000463 material Substances 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims 1
- 235000015111 chews Nutrition 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000002788 crimping Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 101100491335 Caenorhabditis elegans mat-2 gene Proteins 0.000 description 1
- 102100040428 Chitobiosyldiphosphodolichol beta-mannosyltransferase Human genes 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model relates to an explosion-proof electrical equipment introduces and chews with line ball pad field, specifically is a special line ball pad of explosion-proof equipment and pressure pile formula wiring. The wiring board is connected with the introducing device and provided with a wiring hole in the middle, one end face of the wiring board extends to be provided with a wiring pipe, one end of the wiring pipe close to the wiring board is provided with a notch along the radial direction, the notches at the two ends along the radial direction respectively extend outwards to be provided with a connecting lug, the upper wire pressing pad and the lower wire pressing pad are arranged in the wiring board and the wiring board in a penetrating mode, the upper arc-shaped groove of the upper wire pressing pad and the lower arc-shaped groove of the lower wire pressing pad are matched with each other to press a cable, and the upper wire pressing pad at the notch is provided with a wire pressing board connected with the connecting. The utility model discloses simple structure, simple to operate presses the formula of folding wiring to chew and can make the cable fully compress tightly, and it is tighter more to be dragged by other external forces, and unlikely cable conductor is deviate from, eliminates explosion-proof equipment from equipping and presses the formula of folding wiring to chew the potential safety hazard that exists, avoids the incident to take place.
Description
Technical Field
The utility model relates to an explosion-proof electrical equipment introduces and chews with line ball pad field, specifically is a special line ball pad of explosion-proof equipment and pressure pile formula wiring.
Background
When the coal mine explosion-proof equipment is used, the lead-in device is a transition device for an external circuit cable to enter the wiring cavity of the explosion-proof equipment, and the wiring nozzle of the lead-in device is the last line of defense for pressing the cable, is also a weak link in the management of the explosion-proof equipment, and is particularly the link which is most prone to causing problems in daily electromechanical inspection. Because the twenty-fifth regulation in the fifty coal mine explosion-proof regulations: when the wire pressing plate is used for electricity, the leading-in leading-out cable needs to be pressed by the wire pressing plate, and the cables which are not pressed by the wire pressing plate are all subjected to explosion loss. However, the cable must not be flattened, and if the diameter of the compressed cable is reduced by 10% from the original diameter, the cable is not intact.
When colliery explosion-proof equipment wiring in pit at present, mostly use cable crust, sealing washer incomplete piece etc. as the piece of filling between line ball board and the cable, the specification is inconsistent, very easily causes the cable not compress tightly or the cable flattens the volume and surpasss 10% of cable diameter, more probably receives other external force to pull and causes the cable conductor to deviate from, has serious potential safety hazard. Therefore, a special wire pressing pad and a pressing and overlapping type wire connecting nozzle for explosion-proof equipment are specially designed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current wiring and chew the problem that no special line ball pad leads to explosion proof equipment to have the potential safety hazard, provide a special line ball pad of explosion proof equipment and fold formula wiring and chew.
The utility model discloses a realize through following technical scheme: a special wire pressing pad for explosion-proof equipment comprises an upper wire pressing pad and a lower wire pressing pad which are made of rubber materials,
the lower surface of the upper wire pressing pad is arched upwards to form an upper arc-shaped groove, one end face of the upper wire pressing pad positioned in the extending direction of the upper arc-shaped groove is an upper wire pressing pad cutting surface, a plurality of upper wire pressing pad cutting layers are processed from the lower part of the upper wire pressing pad cutting surface along the extending direction of the upper arc-shaped groove, the upper surface and the lower surface of each upper wire pressing pad cutting layer are arc-shaped surfaces matched with the shape of the upper arc-shaped groove, and a distance exists between the processing depth end part of each upper wire pressing pad cutting layer and the other end face of the upper wire pressing pad positioned in the extending direction of the upper;
the upper surface undercut of lower wire pressing pad forms lower arc wall, and the lower wire pressing pad that is located lower arc wall extending direction wherein one end terminal surface is for wire pressing pad cutting plane down, and wire pressing pad upper portion along lower arc wall extending direction processing has a plurality of layers of wire pressing pad cutting layers down from wire pressing pad cutting plane down, and the upper and lower surface on every layer of wire pressing pad cutting layer is the arcwall face with lower arc wall looks adaptation, and there is the interval between the processing degree of depth tip on every layer of wire pressing pad cutting layer and the wire pressing pad other end terminal surface that is located lower arc wall extending direction down.
As the technical scheme of the utility model further improve, go up line ball pad upper surface and seted up line ball pad draw-in groove along last arc wall width direction.
As a further improvement of the technical scheme of the utility model, the thickness of pressing the line pad down is greater than the thickness of pressing the line pad on.
As a further improvement of the technical scheme of the utility model, the contained angle between the axis of going up the arc wall and the horizontal plane is 1.5, contained angle between the axis of lower arc wall and the horizontal plane is 1.5.
As the technical scheme of the utility model further improve, the upper surface of going up the line ball pad be with the arcwall face of last arc wall shape looks adaptation, the lower surface of pressing down the line ball pad be with the arcwall face of arc wall looks adaptation down.
The utility model further provides a press the formula of folding wiring to chew, including foretell explosion-proof equipment special use line ball pad.
As the utility model discloses the further improvement of technical scheme is chewed in formula wiring of folding to pressure still includes and is connected and the wiring board of wiring hole has been seted up at the middle part with introducing device, one of them terminal surface extension of wiring board is equipped with the patch tube, and the patch tube one end that is close to the wiring board is along radially seting up jaggedly, and the breach that is located radial both ends is equipped with the engaging lug outward extension respectively, go up the line ball pad and wear to arrange in wiring board and patch tube jointly with line ball pad down, and the last arc wall of going up the line ball pad and the lower arc wall of line ball pad down mutually support and push down the cable, the last line ball pad upper surface pressure that is located breach department is equipped with the line ball board.
As the utility model discloses the further improvement of technical scheme is chewed to the formula of pressing folding wiring, the last line ball pad cutting plane of going up the line ball pad and the line ball pad cutting plane of pushing down of line ball pad are close to the wiring board.
As the utility model discloses the further improvement of the formula of folding wiring is chewed technical scheme, the other terminal surface extension of wiring board is equipped with the wiring ring with introducing device's wiring hole clearance fit.
Explosion-proof equipment special line ball pad and pressure stack formula wiring chew, simple structure, simple to operate adopts the line ball pad that rubber materials made, has elasticity, can not injure the cable sheath, repeatedly usable. The cutting layer of the wire pressing pad can be cut off according to the specification of the cable, the specification unification of the wire pressing pad is realized, and the flattening amount of the cable meets the specification; the pressure folding type wiring nozzle can fully compress a cable, the cable is dragged to be tighter and tighter by other external force, a cable core wire is prevented from being separated, potential safety hazards existing in the pressure folding type wiring nozzle of the explosion-proof equipment are eliminated from equipment, and safety accidents are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of the special wire pressing pad for explosion-proof equipment of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic view of the mounting of the press-fit terminal tap.
In the figure: 1-upper crimping pad, 11-upper arc groove, 12-upper crimping pad cutting layer, 13-upper crimping pad clamping groove, 2-lower crimping pad, 21-lower arc groove, 22-lower crimping pad cutting layer, 3-wiring board, 4-wiring pipe, 5-connecting lug, 6-crimping board, 7-lead-in device, 8-wiring ring, 9-cable, 10-connecting part, 61-tensioning bolt and 71-connecting bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the present embodiment provides a special wire pressing pad for explosion-proof equipment, comprising an upper wire pressing pad 1 and a lower wire pressing pad 2 made of rubber material,
the lower surface of the upper wire pressing pad 1 is arched upwards to form an upper arc-shaped groove 11, one end face of the upper wire pressing pad 1 positioned in the extending direction of the upper arc-shaped groove 11 is an upper wire pressing pad cutting surface, a plurality of upper wire pressing pad cutting layers 12 are processed from the lower part of the upper wire pressing pad 1 of the upper wire pressing pad cutting surface along the extending direction of the upper arc-shaped groove 11, the upper surface and the lower surface of each upper wire pressing pad cutting layer 12 are arc-shaped surfaces matched with the shape of the upper arc-shaped groove 11, and a distance exists between the processing depth end part of each upper wire pressing pad cutting layer 12 and the other end face of the upper wire pressing pad 1 positioned in the extending direction of the upper arc-shaped groove;
the upper surface undercut of lower wire pressing pad 2 forms arc wall 21 down, and the wire pressing pad 2 that is located arc wall 21 extending direction down wherein one end terminal surface is the wire pressing pad cutting face down, and the wire pressing pad 2 upper portion of cutting face is filled up from the wire pressing down has a plurality of layers of wire pressing pad cutting layer 22 down along arc wall 21 extending direction processing down, and every layer of wire pressing pad cutting layer 22's upper and lower surface is the arcwall face with arc wall 21 looks adaptation down, and there is the interval between the processing degree of depth tip of every layer of wire pressing pad cutting layer 22 and the wire pressing pad 2 other end terminal surface that is located arc wall 21 extending direction down.
In this embodiment, go up the last arc wall 11 of line ball pad 1 and press line ball 2's lower arc wall 21 to mutually support and push down cable 9, because of last arc wall 11 and lower arc wall 21 are the cambered surface with the contact surface of cable 9, can increase cable 9 and last line ball pad 1 and press line ball 2's area of contact down for cable 9 is difficult for deviating from. Moreover, since the upper wire-pressing pad 1 and the lower wire-pressing pad 2 in this embodiment are made of rubber material, the friction force with the cable 9 is large, and the elasticity is provided, so that the outer skin of the cable 9 is not damaged, and the upper wire-pressing pad cutting layer 12 or the lower wire-pressing pad cutting layer 22 can be partially cut according to the size of the connector, so that the cable 9 is not crushed by more than 10% of the diameter of the cable 9.
In the present embodiment, the upper wire pressing pad 1 and the lower wire pressing pad 2 are preferably made of a rubber material with a shore hardness of 45-50 degrees, and the material is not easy to deteriorate and deform on the basis of elasticity, and can be reused. The special line pressing pad for the explosion-proof equipment can be used in the explosion-proof equipment through tests, and is particularly suitable for cables 9 with the diameter of 12-128 mm. As shown in fig. 1, the upper pad cutting layer 12 is eight layers and the lower pad cutting layer 22 is ten layers in this embodiment.
In this embodiment, there is a distance between the end of the processing depth of each upper wire-pressing pad cutting layer 12 and the end surface of the other end of the upper wire-pressing pad 1 located in the extending direction of the upper arc-shaped groove 11, and there is a distance between the end of the processing depth of each lower wire-pressing pad cutting layer 22 and the end surface of the other end of the lower wire-pressing pad 2 located in the extending direction of the lower arc-shaped groove 21. That is, the upper wire mat cut layer 12 and the lower wire mat cut layer 22 are processed to a depth not to cut through the upper wire mat 1 and the lower wire mat 2. Based on the consideration of the strength of the upper and lower wire mats 1 and 2, and in order to cut off portions of the upper and lower wire mat cut layers 12 and 22 later according to the diameter of the cable 9, the preferred processing depth is 4/5 (the length direction is the left-right direction shown in fig. 2) of the lengths of the upper and lower wire mats 1 and 2.
As shown in fig. 3, the embodiment further provides a laminated connector which comprises the special wire pressing pad for the explosion-proof equipment.
This pressure folds formula wiring and chews still includes and is connected and the wiring board 3 that the wiring hole was seted up at the middle part with introducing device 7, one of them terminal surface extension of wiring board 3 is equipped with wire barrel 4, and 4 one ends of wire barrel that are close to wiring board 3 are radially seted up jaggedly, and the breach that is located radial both ends outwards extends respectively and is equipped with engaging lug 5, go up wire pressing pad 1 and wire pressing pad 2 and wear to arrange in wiring board 3 and wire barrel 4 jointly, and go up wire pressing pad 1's last arc wall 11 and wire pressing pad 2's lower arc wall 21 mutually supports and pushes down cable 9, and the last surface pressure line pad 1 that is located breach department presses and is equipped with wire pressing plate 6 with engaging lug 5 bolted connection.
In the present embodiment, the introducing device 7 is a part of explosion-proof equipment, is a part of the common general knowledge in the field, and is not in the protection scope of the present invention, so that the device is not described too much here. Specifically, in order to facilitate the connection between the wiring board 3 and the lead-in device 7, a connecting portion 10 is arranged at the outer edge of a wiring hole of the lead-in device 7, the connecting portion 10 is connected with the wiring board 3 through a connecting bolt 71, and the connecting lug 5 is connected with the wire pressing board 6 through a tightening bolt 61. During the use, loosen connecting bolt 71, earlier put the below at cable 9 with lower line ball pad 2, put last line ball pad 1 again in cable 9 top, the screw rod of tighting bolt 61 passes line ball board 6 and engaging lug 5 from the top down in proper order to with the screw thread fit on the engaging lug 5, realize that cable 9 is compressed tightly, hand power cable 9 is motionless.
As shown in fig. 2, in order to facilitate the positioning of the wire pressing plate 6, an upper wire pressing plate clamping groove 13 is formed on the upper surface of the upper wire pressing plate 1 along the width direction of the upper arc-shaped groove 11. Specifically, the width of the wire pressing plate 6 is matched with the upper wire pressing pad clamping groove 13. In this embodiment, in order to improve the deformation resistance of the upper pad 1, the upper pad catching groove 13 is close to the end surface (i.e., the surface opposite to the cut surface of the upper pad) of the other end of the upper pad 1 located in the extending direction of the upper arc-shaped groove 11.
In the present embodiment, since the lower crimp pad 2 needs to withstand the pressure of the cable 9, and in order to keep the cable 9 centered on the wiring board 3 and the junction tube 4, the thickness of the lower crimp pad 2 is greater than that of the upper crimp pad 1. The lower pad 2, initially placed inside the wire barrel 4, causes the height of the cable 9 to be higher than the midpoint of the wire barrel 4, thus requiring the cutting of a portion of the lower pad cut layer 22 to the specifications of the cable 9. In this embodiment, if the upper wire-bonding pad 1 is too thick, a part of the upper wire-bonding pad cutting layer 12 may be cut off according to actual needs.
In particular, when mounting, as shown in fig. 3, the upper wire pad cutting surface of the upper wire pad 1 and the lower wire pad cutting surface of the lower wire pad 2 are close to the wiring board 3.
Specifically, since the outer end portions (i.e., the end portions opposite to the cutting surfaces) of the upper wire pressing pad 1 and the lower wire pressing pad 2 need to bear a larger external force, in order to increase the pressing force of the upper wire pressing pad 1 and the lower wire pressing pad 2, an included angle θ between the axis of the upper arc-shaped groove 11 and the horizontal plane1Is 1.5 degrees, and the included angle theta between the axis of the lower arc-shaped groove 21 and the horizontal plane2Is 1.5 degrees. The cable 9 can be fully compressed, and the cable 9 cannot be separated because the cable is dragged tighter and tighter when being dragged by external force.
In order to increase the structural strength of the laminated terminal strip, the other end face of the terminal block 3 is extended with a terminal ring 8 which is in clearance fit with the terminal hole of the lead-in device 7.
In this embodiment, in order to make the upper wire pressing pad 1 and the lower wire pressing pad 2 adapt to the inner wall of the wire connecting tube 4, the upper surface of the upper wire pressing pad 1 is an arc surface matched with the shape of the upper arc-shaped groove 11, and the lower surface of the lower wire pressing pad 2 is an arc surface matched with the lower arc-shaped groove 21.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A special line pressing pad for explosion-proof equipment is characterized by comprising an upper line pressing pad (1) and a lower line pressing pad (2) which are made of rubber materials,
the lower surface of the upper wire pressing pad (1) is arched upwards to form an upper arc-shaped groove (11), one end face of the upper wire pressing pad (1) located in the extending direction of the upper arc-shaped groove (11) is an upper wire pressing pad cutting surface, a plurality of upper wire pressing pad cutting layers (12) are processed from the lower portion of the upper wire pressing pad (1) of the upper wire pressing pad cutting surface along the extending direction of the upper arc-shaped groove (11), the upper surface and the lower surface of each upper wire pressing pad cutting layer (12) are arc-shaped surfaces matched with the shape of the upper arc-shaped groove (11), and a distance exists between the end part of the processing depth of each upper wire pressing pad cutting layer (12) and the end face of the other end of the upper wire pressing pad (1) located in the extending direction of the upper arc-;
the upper surface undercut of lower wire pressing pad (2) forms arc wall (21) down, wire pressing pad (2) wherein one end terminal surface that is located arc wall (21) extending direction down fills up the cutting plane for wire pressing down, wire pressing pad (2) upper portion from wire pressing pad cutting plane down has a plurality of layers of wire pressing pad cutting layer (22) down along arc wall (21) extending direction processing down, the upper and lower surface of every layer of wire pressing pad cutting layer (22) is the arcwall face with arc wall (21) looks adaptation down, there is the interval between the machining depth tip of every layer of wire pressing pad cutting layer (22) down and the wire pressing pad (2) other end terminal surface that is located arc wall (21) extending direction down.
2. The special line pressing pad for the explosion-proof equipment as claimed in claim 1, wherein an upper line pressing pad clamping groove (13) is formed in the upper surface of the upper line pressing pad (1) along the width direction of the upper arc-shaped groove (11).
3. The special pressure line pad for the explosion-proof equipment as claimed in claim 1 or 2, wherein the thickness of the lower pressure line pad (2) is larger than that of the upper pressure line pad (1).
4. The special wire pressing pad for the explosion-proof equipment as claimed in claim 1 or 2, wherein the included angle between the axis of the upper arc-shaped groove (11) and the horizontal plane is 1.5 degrees, and the included angle between the axis of the lower arc-shaped groove (21) and the horizontal plane is 1.5 degrees.
5. The special wire pressing pad for the explosion-proof equipment as claimed in claim 1 or 2, wherein the upper surface of the upper wire pressing pad (1) is an arc surface matched with the shape of the upper arc-shaped groove (11), and the lower surface of the lower wire pressing pad (2) is an arc surface matched with the lower arc-shaped groove (21).
6. A laminated terminal comprising the pressure pad for explosion-proof equipment according to claim 1 or 2.
7. The laminated terminal holder according to claim 6, further comprising a terminal plate (3) connected to the lead-in device (7) and having a terminal hole at a middle portion thereof, wherein a terminal tube (4) is extended from one end surface of the terminal plate (3), one end of the terminal tube (4) adjacent to the terminal plate (3) is radially notched, notches at two radial ends are respectively provided with a connecting lug (5) in an outward extending manner, the upper terminal pad (1) and the lower terminal pad (2) are commonly inserted into the terminal plate (3) and the terminal tube (4), an upper arc-shaped groove (11) of the upper terminal pad (1) and a lower arc-shaped groove (21) of the lower terminal pad (2) are mutually matched to press the cable (9), and a terminal plate (6) bolted to the connecting lug (5) is pressed on an upper surface of the upper terminal pad (1) at the notch.
8. A laminated terminal nozzle according to claim 7, characterised in that the upper crimp pad cutting face of the upper crimp pad (1) and the lower crimp pad cutting face of the lower crimp pad (2) are adjacent the terminal block (3).
9. A connector according to claim 7, characterised in that the other end face of the terminal block (3) is extended with a wire loop (8) which is a clearance fit in the wire aperture of the lead-in device (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682152.5U CN212811141U (en) | 2020-04-29 | 2020-04-29 | Special line ball pad of explosion-proof equipment and pressure pile formula wiring are chewed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682152.5U CN212811141U (en) | 2020-04-29 | 2020-04-29 | Special line ball pad of explosion-proof equipment and pressure pile formula wiring are chewed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212811141U true CN212811141U (en) | 2021-03-26 |
Family
ID=75092393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020682152.5U Expired - Fee Related CN212811141U (en) | 2020-04-29 | 2020-04-29 | Special line ball pad of explosion-proof equipment and pressure pile formula wiring are chewed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212811141U (en) |
-
2020
- 2020-04-29 CN CN202020682152.5U patent/CN212811141U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210326 |