CN113866341A - Wire and cable flame-retardant and fire-resistant experimental device - Google Patents
Wire and cable flame-retardant and fire-resistant experimental device Download PDFInfo
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- CN113866341A CN113866341A CN202111027689.3A CN202111027689A CN113866341A CN 113866341 A CN113866341 A CN 113866341A CN 202111027689 A CN202111027689 A CN 202111027689A CN 113866341 A CN113866341 A CN 113866341A
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000003063 flame retardant Substances 0.000 title claims abstract description 20
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 19
- 238000002474 experimental method Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 48
- 239000010687 lubricating oil Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 12
- 238000001125 extrusion Methods 0.000 description 12
- 239000002699 waste material Substances 0.000 description 6
- 206010053615 Thermal burn Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
Abstract
The invention belongs to the technical field of wires and cables, and particularly relates to a wire and cable flame-retardant and fire-resistant experimental device which comprises an experimental box; a pair of symmetrically distributed brackets is arranged on the inner wall of the bottom end of the experimental box; the upper top end of the bracket is provided with a U-shaped groove; a first cavity is formed in the bracket; a clamping plate is arranged on the side wall of the U-shaped groove close to the first cavity; a clamping block is fixedly connected to the clamping plate; the clamping block extends into the first cavity and is fixedly connected to the side wall of the first cavity through a spring; the fixture block is provided with a trapezoidal through groove; a second sliding chute is formed in the inner wall of the first cavity; the invention provides a wire and cable flame-retardant and fire-resistant experimental device, which aims to solve the problems that when a wire and cable fixed by a bolt is burnt under high temperature, the thread and the thread groove of the bolt are slightly deformed in the long-time operation process, the wire and cable cannot be rotationally fixed, the whole support needs to be scrapped, and time and labor are wasted by utilizing the rotational fixation of the bolt.
Description
Technical Field
The invention belongs to the technical field of wires and cables, and particularly relates to a wire and cable flame-retardant and fire-resistant experimental device.
Background
At present, with the development of economic society, the flame-retardant fire-resistant electric wire and cable can effectively avoid the spread of fire, so the usage amount of the flame-retardant fire-resistant electric wire and cable is larger and larger.
In the prior art, when a flame-retardant and fire-resistant experiment is performed on a wire and a cable, two ends of the wire and the cable are generally fixed on a bracket through bolts in a rotating mode, and then a blowtorch is started to perform a flame-out experiment.
However, the wire and cable fixed by the bolt needs to be burnt by high temperature, the thread and the thread groove of the bolt are slightly deformed in the long-time operation process, the wire and cable cannot be rotationally fixed, the whole support needs to be scrapped, and the rotation and the fixation of the bolt wastes time and labor, so that the wire and cable flame-retardant fire-resistant experimental device is provided.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that the wire and cable fixed by the bolt needs to be burnt by high temperature, the thread and the thread groove of the bolt slightly deform in the long-time operation process, the wire and cable cannot be rotationally fixed, the whole support needs to be scrapped, and the rotation and the fixation of the bolt wastes time and labor.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a wire and cable flame-retardant and fire-resistant experimental device, which comprises an experimental box; a pair of symmetrically distributed brackets is arranged on the inner wall of the bottom end of the experimental box; the upper top end of the bracket is provided with a U-shaped groove; a first cavity is formed in the bracket; a clamping plate is arranged on the side wall of the U-shaped groove close to the first cavity; a clamping block is fixedly connected to the clamping plate; the clamping block extends into the first cavity and is fixedly connected to the side wall of the first cavity through a spring; the fixture block is provided with a trapezoidal through groove; a second sliding chute is formed in the inner wall of the first cavity; the side wall of the first cavity is connected with a first trapezoid block in a sliding manner; a first sliding block is fixedly connected to the side wall of the first trapezoid block; the first sliding block is connected to the inner wall of the second sliding chute in a sliding mode and is fixedly connected to the side wall of the top end of the second sliding chute through a spring; the first trapezoid block inclined plane and the trapezoid through groove inclined plane are in contact with each other and are parallel to each other; a first sliding groove is formed in the side wall of the first cavity; the first sliding chute is connected with a first push column in a sliding manner; the first pushing column is fixedly connected to the first trapezoidal block; the first trapezoid block is positioned through a positioning assembly; in the prior art, when the wire and cable are subjected to flame-retardant and fire-resistant experiments, two ends of the wire and cable are generally fixed on a bracket through bolts in a rotating mode, then a blowtorch is started to carry out fire spraying experiments, but the wire and cable fixed by the bolts needs to be burnt under high temperature, the situation that the threads and thread grooves of the bolts are slightly deformed in the long-time operation process can cause that the wire and cable cannot be fixed in a rotating mode, the whole bracket needs to be scrapped, and the bolt is used for rotating and fixing the wires and cables, which wastes time and labor, therefore, when the wire and cable experiments need to be carried out in work, two ends of the wire and cable are respectively placed into U-shaped grooves, then a first push column is pushed upwards, the first push column pushes the first trapezoidal block upwards, the first trapezoidal block moves upwards to enter the trapezoidal through groove, and then the inclined planes of the first trapezoidal block and the trapezoidal through groove are parallel to each other, first trapezoidal piece shifts up can promote the fixture block to remove outside the first cavity, the fixture block removes can drive the cardboard and extrudees the tip of placing the wire and cable in the U-shaped groove, then first trapezoidal piece is when upwards running through trapezoidal logical groove completely, the extrusion force is in the maximum value this moment, then fix a position fixedly through locating component with first trapezoidal piece again, guarantee this moment the cardboard to wire and cable's fixed state, utilize to promote first pushing posts and promote fixed wire and cable with the cardboard and can avoid the high temperature to influence, and it is fixed simple and convenient, practice thrift fixed wire and cable time.
Preferably, the positioning assembly comprises a second trapezoidal block; second trapezoidal blocks are fixedly connected to the inner walls of the two sides of the first cavity through springs; the second trapezoidal blocks are symmetrical with each other about the center line of the first cavity; during operation, when first trapezoidal piece rebound runs through trapezoidal logical groove, when the extrusion force was in the maximum value this moment, first trapezoidal piece can break away from the extrusion of second trapezoidal piece this moment, then under the spring force effect of second trapezoidal piece, second trapezoidal piece moved to first cavity central line department, and then fixed this moment first trapezoidal piece, fixed a position it, and then the fixed state of cardboard this moment of assurance.
Preferably, a third trapezoidal block is connected to the side wall of the first cavity in a sliding manner; a third sliding chute is formed in the inner wall of the first cavity; a second sliding block is fixedly connected to the side wall of the third trapezoidal block; the second sliding block is connected to the third sliding chute in a sliding mode and is fixedly connected to the side wall of the top end of the third sliding chute through a spring; the section of the third trapezoid block is an isosceles trapezoid; the inclined plane of the third trapezoid block is parallel to the inclined plane of the second trapezoid block; a second pushing column is arranged on the third trapezoidal block and is connected to the inner wall of the first sliding groove in a sliding mode; the during operation, after wire and cable carried out the experiment and ended, upwards promote the second and push away the post, the second pushes away the post upward movement and can drive third trapezoidal piece rebound, third trapezoidal piece rebound can be parallel to each other through the inclined plane of third trapezoidal piece inclined plane and second trapezoidal piece and then promote the second trapezoidal piece and remove to first cavity both sides lateral wall, then remove the fixed effect to first trapezoidal piece, first trapezoidal piece can be at the effect of first slider spring elasticity down the rebound, and then remove the fixed state of cardboard to wire and cable this moment, take out wire and cable after the experiment, and is simple in operation convenient, can practice thrift and remove operating time.
Preferably, a group of first corrugated grooves are formed in the side wall, away from the first cavity, of the U-shaped groove; a second corrugated groove is formed in the side wall, close to the first corrugated groove, of the clamping plate; during operation, through the setting of first ripple groove and second ripple groove, when cardboard extrusion wire and cable, can carry out the screens through first ripple groove and second ripple groove to wire and cable fixed this moment, and can effectually prevent through the setting of first ripple groove and second ripple groove that the heat from piling up in wire and cable extrusion fixed department, can effectually prevent that the condition of scald from appearing in the experimenter when taking out from wire and cable both ends.
Preferably, the bottom end of the experiment box is provided with a second cavity; the inner wall of the second cavity is rotatably connected with a screw rod; the side wall of the experimental box is fixedly connected with a motor; the lead screw is arranged at the output end of the motor; a fourth sliding chute is formed in the side wall of the top end of the second cavity; the pair of brackets is connected to the screw rod through a screw rod nut pair and is connected to the fourth sliding chute in a sliding mode; during operation, in order to enable the electric wire and cable to be in a stretched state, the motor is started, the motor drives the lead screw to rotate, the lead screw rotates to drive the pair of supports to move in opposite directions, and then the electric wire and cable fixed on the supports are stretched, so that the accuracy of an experiment is further guaranteed.
Preferably, a first oil bag is fixedly connected to the middle of the top end of the first cavity; a cam is fixedly connected to the lead screw relative to the first oil bag; an oil outlet cavity is formed in the position, corresponding to the fourth sliding groove, of the side walls of the two sides of the support; a group of oil outlet holes are formed in the side wall of the oil outlet cavity; the first oil bag and the oil outlet cavity are communicated with each other through a hose; during operation, when the lead screw rotates, the cam can be driven to rotate, the cam rotates to extrude the first oil bag back and forth, lubricating oil of the first oil bag enters the oil outlet cavity through the hose, then is sprayed out of the oil outlet hole in the oil outlet cavity, and the sprayed lubricating oil can effectively reduce sliding friction on the support and the fourth sliding groove, so that the support can be moved conveniently.
Preferably, the top end of the experiment box is fixedly connected with an air cylinder; the bottom end of the air cylinder is provided with a piston rod, and the piston rod extends into the experiment box and is fixedly connected with an inverted U-shaped block; a blast burner is arranged at the center of the inverted U-shaped block; during operation, when the distance from flame of the blowtorch to the electric wire and the electric wire is required to be adjusted, the cylinder is started, the cylinder drives the piston rod to contract to adjust the distance from the blowtorch to the electric wire and the blowtorch is convenient and fast to use.
Preferably, a fixing plate is fixedly connected to the side wall of the inverted U-shaped block; an electric push rod is fixedly connected to the fixed plate; the end part of the electric push rod is provided with a first magnetic block; the blowtorch is hinged to the top end of the inverted U-shaped plate; a second magnetic layer is fixedly connected to the side wall of the blast lamp; the end part of the electric push rod is contacted with the side wall of the blast lamp; the during operation, when needs the blowtorch to rock, start electric putter, electric putter round trip movement can and then drive the blowtorch and make a round trip to promote at the U-shaped piece pin joint of falling through the inter attraction of first magnetic path and second magnetic layer, and then guarantees the accuracy of experimental data.
Preferably, a group of first grooves are formed in the top end of the second trapezoidal block; the inner wall of the first groove is fixedly connected with a roller through a rotating shaft; the during operation, when fixing wire cable through the cardboard, second trapezoidal piece this moment is located first trapezoidal piece under, the position to first trapezoidal piece is fixed, and then guarantee the fixed effect of cardboard to wire cable this moment, but in the experiment end, when needing to loosen the cardboard, utilize to push up third trapezoidal piece this moment, let third trapezoidal piece rebound, and then remove second trapezoidal piece to both sides, but in order to guarantee that second trapezoidal piece can the short-term travel, be equipped with the gyro wheel on second trapezoidal piece top, thereby let the binding face of second trapezoidal piece and first trapezoidal piece convert into rolling friction from sliding friction, and then reduce the production of frictional force, conveniently remove fixedly to the cardboard.
Preferably, a second groove is formed in the third trapezoidal block; a second push column is fixedly connected to the bottom of the second groove through a spring; a second oil bag is arranged between the second push column and the bottom of the second groove; a group of third corrugated grooves are formed in the inclined planes on the two sides of the third trapezoidal block; the bottoms of the grooves of the third corrugated grooves are communicated with the second oil bag through the oil outlet hose; a sponge layer is fixedly connected to the inner wall of the pipe orifice of the oil outlet hose at the bottom of the groove of the third corrugated groove; the during operation, when the fixed state of cardboard is relieved to needs, third trapezoidal piece need be shifted up this moment, but in order to reduce the influence of frictional force and then accelerate the fixed speed of relieving to the cardboard, extrude the second earlier and push away the post, and then extrude the second oil bag, the lubricating oil of second oil bag can get into the third ripple inslot through going out the oil hose, then through the setting on inclined plane, the tongue of lubricated third ripple groove of lubricating oil, and then reduce frictional force, and in order to prevent the waste of lubricating oil, be equipped with the sponge layer at an oil hose opening part, the lubricating oil can slowly ooze on the sponge layer, let lubricating oil can make full use of.
The invention has the following beneficial effects:
1. when the electric wire and cable experiment needs to be carried out, two ends of an electric wire and cable are respectively placed in a U-shaped groove, then a first push column is pushed upwards, the first push column pushes a first trapezoid block upwards, the first trapezoid block moves upwards to enter a trapezoid through groove, then the first trapezoid block inclined plane and the trapezoid through groove inclined plane are parallel to each other, the first trapezoid block moves upwards to push a clamping block to move towards the outside of a first cavity, the clamping block moves to drive the clamping plate to extrude the end part of the electric wire and cable placed in the U-shaped groove, then the first trapezoid block completely penetrates through the trapezoid through groove upwards, the extrusion force is at the maximum value, then the first trapezoid block is positioned and fixed through a positioning component, the fixing state of the clamping plate on the electric wire and cable is ensured, and the electric wire and cable can be prevented from being influenced by high temperature by pushing the first push column to push the clamping plate to push the electric wire and cable, and the fixing is simple and convenient, and the time for fixing the wires and the cables is saved.
2. According to the wire and cable flame-retardant fire-resistant experimental device, after an experiment of a wire and cable is finished, the second push column is pushed upwards, the second push column moves upwards to drive the third trapezoidal block to move upwards, the third trapezoidal block moves upwards to push the second trapezoidal block to move towards the side walls of the two sides of the first cavity through the fact that the inclined surface of the third trapezoidal block and the inclined surface of the second trapezoidal block are parallel to each other, then the fixing effect of the first trapezoidal block is relieved, the first trapezoidal block moves downwards under the action of the elastic force of the first slider spring, the fixing state of the clamping plate to the wire and cable is relieved at the moment, the wire and cable after the experiment is taken out, the operation is simple and convenient, and the relieving operation time can be saved.
3. According to the electric wire and cable flame-retardant and fire-resistant experimental device, due to the arrangement of the first corrugated groove and the second corrugated groove, when the clamping plate extrudes the electric wire and cable, the electric wire and cable can be clamped and fixed through the first corrugated groove and the second corrugated groove, heat accumulation at the extrusion and fixing position of the electric wire and cable can be effectively prevented through the arrangement of the first corrugated groove and the second corrugated groove, and the situation that an experimenter is scalded when the experimenter takes out the electric wire and cable from two ends can be effectively prevented.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a partial cross-sectional view of the stent;
FIG. 5 is a cross-sectional view taken at B-B of FIG. 4;
FIG. 6 is an enlarged view at C of FIG. 4;
FIG. 7 is a cross-sectional view of a third trapezoidal block;
FIG. 8 is a drawing of the second embodiment;
in the figure: 1. an experimental box; 12. a support; 13. a U-shaped groove; 14. clamping a plate; 15. a clamping block; 16. a first cavity; 17. a trapezoidal through groove; 18. a first trapezoidal block; 19. a first chute; 2. a first push post; 21. a second trapezoidal block; 211. a first groove; 212. a roller; 22. a first corrugation groove; 23. a second corrugation groove; 24. a third trapezoidal block; 25. a second push post; 251. a second oil pocket; 252. a second groove; 253. an oil outlet hose; 254. a sponge layer; 255. a third corrugation groove; 26. a first slider; 27. a second chute; 28. a second slider; 29. a third chute; 3. an electric motor; 31. a second cavity; 32. a lead screw; 33. a fourth chute; 34. a first oil pocket; 35. a cam; 36. an oil outlet cavity; 37. an oil outlet hole; 38. a cylinder; 39. an inverted U-shaped block; 4. a blowtorch; 41. a fixing plate; 42. an electric push rod; 43. a first magnetic block; 44. a second magnetic layer; 45. a rubber layer.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The first embodiment is as follows:
as shown in fig. 1 to 7, the flame retardant and fire resistant experimental device for electric wire and cable according to the present invention comprises an experimental box 1; a pair of symmetrically distributed brackets 12 are arranged on the inner wall of the bottom end of the experimental box 1; the top end of the bracket 12 is provided with a U-shaped groove 13; a first cavity 16 is formed in the bracket 12; a clamping plate 14 is arranged on the side wall of the U-shaped groove 13 close to the first cavity 16; a clamping block 15 is fixedly connected to the clamping plate 14; the fixture block 15 extends into the first cavity 16 and is fixedly connected to the side wall of the first cavity 16 through a spring; the fixture block 15 is provided with a trapezoidal through groove 17; a second chute 27 is formed in the inner wall of the first cavity 16; a first trapezoidal block 18 is connected to the side wall of the first cavity 16 in a sliding manner; a first sliding block 26 is fixedly connected to the side wall of the first trapezoid block 18; the first sliding block 26 is slidably connected to the inner wall of the second sliding groove 27, and the first sliding block 26 is fixedly connected to the side wall of the top end of the second sliding groove 27 through a spring; the inclined surfaces of the first trapezoidal blocks 18 and the inclined surfaces of the trapezoidal through grooves 17 are in contact with each other and are parallel; a first chute 19 is formed in the side wall of the first cavity 16; the first sliding chute 19 is connected with a first push column 2 in a sliding way; the first push column 2 is fixedly connected to the first trapezoidal block 18; the first trapezoidal block 18 is positioned by a positioning assembly; in the prior art, when the electric wire and cable are subjected to flame-retardant and fire-resistant experiments, two ends of the electric wire and cable are generally fixed on a bracket 12 through bolts in a rotating way, then a blowtorch 4 is started to carry out the flame-retardant and fire-resistant experiments, but when the electric wire and cable fixed by the bolts are burnt under high temperature, the situation that the threads and thread grooves of the bolts are slightly deformed in the long-time operation process can cause that the electric wire and cable cannot be fixed in the rotating way, and the whole bracket 12 needs to be scrapped, and the bolts are used for rotating and fixing, which wastes time and labor, therefore, when the electric wire and cable experiments need to be carried out in work, two ends of the electric wire and cable are respectively placed into a U-shaped groove 13, then a first pushing column 2 is pushed upwards, the first trapezoidal block 18 is pushed upwards by the first pushing column 2, the first trapezoidal block 18 moves upwards to enter a trapezoidal through groove 17, and then the inclined planes of the first trapezoidal block 18 and the trapezoidal through groove 17 are parallel to each other, first trapezoidal piece 18 moves upward and can promote fixture block 15 to 16 outer removals of first cavity, fixture block 15 removes and can drive cardboard 14 and extrude the tip of placing the wire and cable in U-shaped groove 13, then first trapezoidal piece 18 is when upwards running through trapezoidal logical groove 17 completely, the extrusion force is at the maximum value this moment, then fix a position fixedly through locating component with first trapezoidal piece 18 again, guarantee cardboard 14 this moment to wire and cable's fixed state, utilize and promote first support strut 2 and promote fixed wire and cable with cardboard 14 and can avoid the high temperature influence, and fixed simple and convenient, practice thrift fixed wire and cable time.
The positioning assembly comprises a second trapezoidal block 21; the inner walls of two sides of the first cavity 16 are fixedly connected with second trapezoidal blocks 21 through springs; the second trapezoidal blocks 21 are symmetrical to each other about the center line of the first cavity 16; during operation, when first trapezoidal piece 18 upwards moves and runs through trapezoidal through groove 17, when the extrusion force was in the maximum value this moment, first trapezoidal piece 18 can break away from the extrusion of second trapezoidal piece 21 this moment, then under the spring force effect of second trapezoidal piece 21, second trapezoidal piece 21 moved to first cavity 16 central line department, and then fixed this moment first trapezoidal piece 18, fixes a position it, and then guarantees the fixed state of cardboard 14 this moment.
A third trapezoidal block 24 is connected to the side wall of the first cavity 16 in a sliding manner; a third sliding chute 29 is formed in the inner wall of the first cavity 16; a second slide block 28 is fixedly connected to the side wall of the third trapezoid block 24; the second sliding block 28 is slidably connected to the third sliding chute 29, and the second sliding block 28 is fixedly connected to the side wall of the top end of the third sliding chute 29 through a spring; the section of the third trapezoid block 24 is an isosceles trapezoid; the inclined plane of the third trapezoid block 24 and the inclined plane of the second trapezoid block 21 are parallel to each other; the third trapezoidal block 24 is provided with a second push column 25, and the second push column 25 is connected to the inner wall of the first sliding groove 19 in a sliding manner; the during operation, after wire and cable carried out the experiment and ended, upwards promote the second and push away post 25, the second pushes away post 25 upward movement can drive third trapezoidal piece 24 rebound, third trapezoidal piece 24 rebound can be parallel to each other through the inclined plane of third trapezoidal piece 24 inclined plane and second trapezoidal piece 21 and then promote second trapezoidal piece 21 and remove to 16 both sides lateral walls of first cavity, then remove the fixed effect to first trapezoidal piece 18, first trapezoidal piece 18 can move down under the effect of first slider 26 spring force, and then remove cardboard 14 the fixed state to wire and cable this moment, take out the wire and cable after the experiment, and is simple and convenient in operation, can practice thrift and remove operating time.
A group of first corrugated grooves 22 are formed in the side wall of the U-shaped groove 13 away from the first cavity 16; a second corrugated groove 23 is formed in the side wall, close to the first corrugated groove 22, of the clamping plate 14; during operation, through the setting of first ripple groove 22 and second ripple groove 23, when cardboard 14 extrudees wire and cable, can carry out the screens through first ripple groove 22 and second ripple groove 23 fixed to wire and cable this moment, and can effectually prevent through the setting of first ripple groove 22 and second ripple groove 23 that the heat from piling up in wire and cable extrusion fixed department, can effectually prevent that the condition of scald from appearing in the experimenter when taking out from wire and cable both ends.
The bottom end of the experimental box 1 is provided with a second cavity 31; the inner wall of the second cavity 31 is rotatably connected with a screw rod 32; the side wall of the experimental box 1 is fixedly connected with a motor 3; the lead screw 32 is arranged on the output end of the motor 3; a fourth chute 33 is formed in the side wall of the top end of the second cavity 31; the pair of brackets 12 are connected to the screw rod 32 through a screw-nut pair and are connected to the fourth sliding chute 33 in a sliding manner; during operation, in order to make the electric wire and cable appear the state of stretching straight, start motor 3, motor 3 drives lead screw 32 and rotates, and lead screw 32 rotates and can drive a pair of support 12 and remove to opposite direction, and then will fix the electric wire and cable that support 12 and stretch straight, further guarantee the accuracy of experiment.
A first oil bag 34 is fixedly connected to the middle of the top end of the first cavity 16; a cam 35 is fixedly connected to the lead screw 32 relative to the first oil bag 34; oil outlet cavities 36 are formed in the positions, relative to the fourth sliding chute 33, of the side walls of the two sides of the bracket 12; a group of oil outlet holes 37 are formed in the side wall of the oil outlet cavity 36; the first oil bag 34 and the oil outlet chamber 36 are communicated with each other through a hose; during operation, when lead screw 32 rotated, can drive cam 35 and rotate, cam 35 rotated and can make a round trip to extrude first oil pocket 34, and the lubricating oil of first oil pocket 34 passes through the hose and gets into out oil chamber 36, then goes up oil outlet 37 blowout from oil chamber 36, and spun lubricating oil can effectively reduce the sliding friction on support 12 and the fourth spout 33, makes things convenient for the removal of support 12.
The top end of the experimental box 1 is fixedly connected with an air cylinder 38; a piston rod is arranged at the bottom end of the air cylinder 38, and the piston rod extends into the experiment box 1 and is fixedly connected with an inverted U-shaped block 39; a blast burner 4 is arranged at the center of the inverted U-shaped block 39; during operation, when the distance from the flame of the blowtorch 4 to the electric wire and cable needs to be adjusted, the cylinder 38 is started, the cylinder 38 drives the piston rod to contract to adjust the distance from the blowtorch 4 to the electric wire and cable, and the operation is convenient and fast. A fixing plate 41 is fixedly connected to the side wall of the inverted U-shaped block 39; an electric push rod 42 is fixedly connected to the fixed plate 41; a first magnetic block 43 is arranged at the end part of the electric push rod 42; the blowtorch 4 is hinged to the top end of the inverted U-shaped plate; a second magnetic layer 44 is fixedly connected to the side wall of the blast lamp 4; the end part of the electric push rod 42 is contacted with the side wall of the blast lamp 4; during operation, when the blowtorch 4 is needed to rock, the electric push rod 42 is started, the electric push rod 42 moves back and forth, the blowtorch 4 is driven to push back and forth at the hinged point of the inverted U-shaped block 39 through the mutual attraction of the first magnetic block 43 and the second magnetic layer 44, and the accuracy of experimental data is further ensured.
The top end of the second trapezoid block 21 is provided with a group of first grooves 211; the inner wall of the first groove 211 is fixedly connected with a roller 212 through a rotating shaft; in operation, when fixing wire cable through cardboard 14, second trapezoidal piece 21 is located first trapezoidal piece 18 under this moment, fix the position of first trapezoidal piece 18, and then guarantee cardboard 14 to wire cable's fixed effect this moment, but in the experiment end, when needing to loosen cardboard 14, utilize to push up third trapezoidal piece 24 this moment, let third trapezoidal piece 24 rebound, and then remove second trapezoidal piece 21 to both sides, but in order to guarantee that second trapezoidal piece 21 can the short-term travel, be equipped with gyro wheel 212 on second trapezoidal piece 21 top, thereby let the binding face of second trapezoidal piece 21 and first trapezoidal piece 18 convert into rolling friction from sliding friction, and then reduce the production of frictional force, conveniently remove fixedly to cardboard 14.
A second groove 252 is formed in the third trapezoidal block 24; a second push column 25 is fixedly connected to the bottom of the second groove 252 through a spring; a second oil bag 251 is arranged between the second push column 25 and the bottom of the second groove 252; a group of third corrugated grooves 255 are formed in the inclined surfaces of the two sides of the third trapezoidal block 24; the groove bottoms of the third corrugated grooves 255 are communicated with each other through the oil outlet hose 253 and the second oil bag 251; a sponge layer 254 is fixedly connected to the inner wall of the pipe orifice of the oil outlet hose 253 at the bottom of the groove of the third corrugated groove 255; during operation, when the fixed state of cardboard 14 needs to be relieved, third trapezoidal piece 24 need shift up this moment, but in order to reduce the influence of frictional force and then accelerate the speed fixed to relieving of cardboard 14, extrude second push pillar 25 earlier, and then extrude second oil bag 251, the lubricating oil of second oil bag 251 can get into in third ripple groove 255 through going out oil hose 253, then through the setting on inclined plane, the tongue of third ripple groove 255 is lubricated to the lubricating oil, and then reduce frictional force, and in order to prevent the waste of lubricating oil, be equipped with sponge layer 254 at an oil outlet hose 253 opening part, sponge layer 254 can slowly ooze lubricating oil, let lubricating oil can make full use of.
Example two:
as shown in fig. 6, in a first comparative example, as another embodiment of the present invention, a rubber layer 45 is fixed to the cam 35; during operation, be equipped with rubber layer 45 on cam 35, because of rubber layer 45 has the elasticity guard action, make a round trip to extrude the in-process at cam 35 and first oil pocket 34, rubber layer 45 can effectively protect first oil pocket 34 wearing and tearing, and rubber layer 45 has the function of inhaling makes an uproar, can effectually reduce the noise that the collision produced between cam 35 and the first oil pocket 34.
The working principle is as follows: when an electric wire and cable experiment needs to be carried out, two ends of an electric wire and cable are respectively placed into the U-shaped grooves 13, then the first pushing columns 2 are pushed upwards, the first pushing columns 2 push the first trapezoidal blocks 18 upwards, the first trapezoidal blocks 18 move upwards to enter the trapezoidal through grooves 17, then the inclined surfaces of the first trapezoidal blocks 18 and the inclined surfaces of the trapezoidal through grooves 17 are parallel to each other, the first trapezoidal blocks 18 move upwards to push the clamping blocks 15 to move towards the outside of the first cavities 16, the clamping blocks 15 move to drive the clamping plates 14 to extrude the end portions of the electric wire and cable placed in the U-shaped grooves 13, then when the first trapezoidal blocks 18 completely penetrate through the trapezoidal through grooves 17 upwards, the first trapezoidal blocks 18 can be separated from the extrusion of the second trapezoidal blocks 21, then under the action of the spring elasticity of the second trapezoidal blocks 21, the second trapezoidal blocks 21 move towards the central line of the first cavities 16, the first trapezoidal blocks 18 are fixed, and positioned and fixed, further ensuring the fixed state of the clamping plate 14, then starting the motor 3, the motor 3 drives the lead screw 32 to rotate, the lead screw 32 rotates to drive the pair of brackets 12 to move in opposite directions, further straightening the electric wire and cable fixed on the brackets 12, then starting the air cylinder 38, the air cylinder 38 drives the piston rod to contract to adjust the distance from the blowtorch 4 to the electric wire and cable, starting the electric push rod 42, the electric push rod 42 moves back and forth, the blowtorch 4 is driven to move back and forth at the hinge point of the inverted U-shaped block 39 through the mutual attraction of the first magnetic block 43 and the second magnetic layer 44, then starting the electric wire and cable flame-retardant fire-proof experiment, after the experiment of the electric wire and cable is finished, the second push column 25 is pushed upwards, the second push column 25 moves upwards to drive the third trapezoidal block 24 to move upwards, the third trapezoidal block 24 moves upwards to be parallel to the inclined plane of the second trapezoidal block 21 through the inclined plane of the third trapezoidal block 24, and then promote second trapezoidal piece 21 and remove to 16 both sides lateral walls of first cavity, then the fixed effect of contact to first trapezoidal piece 18, first trapezoidal piece 18 can move down under the effect of first slider 26 spring force, and then relieves the fixed state of cardboard 14 to electric wire at this moment, takes out the electric wire after will testing, and easy operation is convenient, can practice thrift and relieve operating time.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The wire and cable flame-retardant and fire-resistant experimental device is characterized by comprising an experimental box (1); a pair of symmetrically distributed brackets (12) is arranged on the inner wall of the bottom end of the experimental box (1); the upper top end of the bracket (12) is provided with a U-shaped groove (13); a first cavity (16) is formed in the bracket (12); a clamping plate (14) is arranged on the side wall of the U-shaped groove (13) close to the first cavity (16); a clamping block (15) is fixedly connected to the clamping plate (14); the clamping block (15) extends into the first cavity (16) and is fixedly connected to the side wall of the first cavity (16) through a spring; the fixture block (15) is provided with a trapezoidal through groove (17); a second sliding chute (27) is formed in the inner wall of the first cavity (16); a first trapezoid block (18) is connected to the side wall of the first cavity (16) in a sliding manner; a first sliding block (26) is fixedly connected to the side wall of the first trapezoid block (18); the first sliding block (26) is connected to the inner wall of the second sliding groove (27) in a sliding mode, and the first sliding block (26) is fixedly connected to the side wall of the top end of the second sliding groove (27) through a spring; the inclined surface of the first trapezoidal block (18) is contacted with and parallel to the inclined surface of the trapezoidal through groove (17); a first sliding groove (19) is formed in the side wall of the first cavity (16); the first sliding chute (19) is connected with a first push column (2) in a sliding way; the first push column (2) is fixedly connected to the first trapezoidal block (18); the first trapezoidal block (18) is positioned by a positioning assembly.
2. The experimental apparatus for flame-retardant and fire-resistant of electric wire and cable according to claim 1, wherein the positioning assembly comprises a second trapezoid block (21); the inner walls of two sides of the first cavity (16) are fixedly connected with second trapezoidal blocks (21) through springs; the second trapezoidal blocks (21) are symmetrical with each other about the center line of the first cavity (16).
3. The experimental device for flame retardance and fire resistance of electric wires and cables as claimed in claim 2, wherein a third trapezoidal block (24) is slidably connected to the side wall of the first cavity (16); a third sliding chute (29) is formed in the inner wall of the first cavity (16); a second sliding block (28) is fixedly connected to the side wall of the third trapezoidal block (24); the second sliding block (28) is connected to the third sliding groove (29) in a sliding mode, and the second sliding block (28) is fixedly connected to the side wall of the top end of the third sliding groove (29) through a spring; the section of the third trapezoid block (24) is an isosceles trapezoid; the inclined plane of the third trapezoid block (24) and the inclined plane of the second trapezoid block (21) are parallel to each other; and a second pushing column (25) is arranged on the third trapezoidal block (24), and the second pushing column (25) is connected to the inner wall of the first sliding groove (19) in a sliding manner.
4. The experimental device for flame retardance and fire resistance of electric wires and cables as claimed in claim 3, wherein a group of first corrugated grooves (22) are formed in the side wall, away from the first cavity (16), of the U-shaped groove (13); and a second corrugated groove (23) is formed in the side wall, close to the first corrugated groove (22), of the clamping plate (14).
5. The wire and cable flame-retardant and fire-resistant experimental device as claimed in claim 4, wherein the bottom end of the experimental box (1) is provided with a second cavity (31); the inner wall of the second cavity (31) is rotatably connected with a screw rod (32); the side wall of the experimental box (1) is fixedly connected with a motor (3); the screw rod (32) is arranged on the output end of the motor (3); a fourth sliding chute (33) is formed in the side wall of the top end of the second cavity (31); the pair of brackets (12) is connected to the screw rod (32) through a screw rod nut pair and is connected to the fourth sliding chute (33) in a sliding mode.
6. The experimental device for flame retardance and fire resistance of electric wires and cables as claimed in claim 5, wherein a first oil bag (34) is fixedly connected to the middle of the top end of the first cavity (16); a cam (35) is fixedly connected to the lead screw (32) relative to the first oil bag (34); an oil outlet cavity (36) is formed in the position, corresponding to the fourth sliding groove (33), of the side wall of the two sides of the support (12); a group of oil outlet holes (37) are formed in the side wall of the oil outlet cavity (36); the first oil bag (34) and the oil outlet cavity (36) are communicated with each other through a hose.
7. The experimental apparatus for flame retardance and fire resistance of electric wires and cables as claimed in claim 6, wherein a cylinder (38) is fixedly connected to the top end of the experimental box (1); the bottom end of the air cylinder (38) is provided with a piston rod, and the piston rod extends into the experiment box (1) and is fixedly connected with an inverted U-shaped block (39); and a blast burner (4) is arranged at the center of the inverted U-shaped block (39).
8. The experimental device for flame retardance and fire resistance of electric wires and cables as claimed in claim 7, wherein a fixing plate (41) is fixedly connected to the side wall of the inverted U-shaped block (39); an electric push rod (42) is fixedly connected to the fixing plate (41); a first magnetic block (43) is arranged at the end part of the electric push rod (42); the blowtorch (4) is hinged to the top end of the inverted U-shaped plate; a second magnetic layer (44) is fixedly connected to the side wall of the blast lamp (4); the end part of the electric push rod (42) is contacted with the side wall of the blast lamp (4).
9. The experimental device for flame retardance and fire resistance of electric wires and cables as claimed in claim 8, wherein a group of first grooves (211) are formed at the top end of the second trapezoidal block (21); the inner wall of the first groove (211) is fixedly connected with a roller (212) through a rotating shaft.
10. The experimental device for flame retardance and fire resistance of electric wires and cables as claimed in claim 9, wherein a second groove (252) is formed on the third trapezoidal block (24); a second push column (25) is fixedly connected to the bottom of the second groove (252) through a spring; a second oil bag (251) is arranged between the second push column (25) and the bottom of the second groove (252); a group of third corrugated grooves (255) are formed in the inclined surfaces of the two sides of the third trapezoidal block (24); the bottoms of the grooves of the third corrugated grooves (255) are communicated with each other through an oil outlet hose (253) and the second oil bag (251); and a sponge layer (254) is fixedly connected to the inner wall of the pipe orifice of the oil outlet hose (253) at the bottom of the groove of the third corrugated groove (255).
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| CN202111027689.3A CN113866341A (en) | 2021-09-02 | 2021-09-02 | Wire and cable flame-retardant and fire-resistant experimental device |
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| CN202111027689.3A CN113866341A (en) | 2021-09-02 | 2021-09-02 | Wire and cable flame-retardant and fire-resistant experimental device |
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| CN113866341A true CN113866341A (en) | 2021-12-31 |
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