CN116281400A - Device for cable combustion experiment and operation method - Google Patents

Abstract

The application discloses a device for cable combustion experiments and an operation method thereof, wherein a transmission shaft can be rotatably connected to a first support and a second support along a self central axis, a wire guide wheel is fixedly penetrated through the transmission shaft in the circumferential direction, and the transmission shaft is arranged to slide in the width direction of a supporting platform; the length direction of the wire pressing assembly and the length direction of the wire guide wheel assembly are perpendicular to the length direction of the supporting platform, and the two wire pressing assemblies are arranged between the two wire guide wheel assemblies. According to the device for the cable combustion experiment and the operation method, provided by the invention, the convenient winding of the cable is realized through the ordered arrangement of the wire wheels in the two wire wheel assemblies and the smooth periphery of the wire wheels, and the cable is not required to be cut in the process; the combination of the two characteristics of the wire guide wheel fixedly penetrating the transmission shaft in the circumferential direction and the transmission shaft arranged to slide in the width direction of the supporting platform realizes that a wire tightening process can be performed after winding is completed, so that the tension of the cable is further optimized.

Description

Device for cable combustion experiment and operation method

Technical Field

The invention relates to the field of cable detection, in particular to a device for a cable combustion experiment and an operation method.

Background

The use of a protective sheath of polymeric material is basically the only option, whether it be a data cable or a power supply cable. In different application scenes, each application area defines different parameters for the expressive force of the cable under the condition of fire, and the parameters are obtained in various types of combustion experiments. During combustion experiments, it is often required to fix a number of cables side by side in a certain length (e.g. 20 cables 5 meters long). In the fixing process, two fixing structures are often used, the cables which are arranged side by side are fixed on the two fixing structures, and when a combustion experiment is carried out, the two fixing structures and the cables fixed on the two fixing structures are placed into a combustion experiment box together so as to carry out the test of various parameters.

In the fixing process, if the cable is not cut, the side-by-side placement of the cable is not facilitated, and the cutting operation is performed, and a lot of time is required even if a tool is used. Particularly, whether a cable is cut or not is difficult to solve, the fixing problem of the cable is abnormal, if the cables arranged side by side are uneven in length, the stress conditions of the cables are different, and then a certain uncertainty is formed on the result of a combustion experiment.

Disclosure of Invention

The invention mainly aims to provide a device for a cable combustion experiment and an operation method thereof, which aim to solve the problems of

In order to achieve the above object, the present invention provides an apparatus for cable combustion experiments, comprising:

the support platform is used as a support of the cable combustion experimental device;

the two wire pressing assemblies are detachably arranged on the supporting platform and are arranged at intervals in the length direction of the supporting platform, and each wire pressing assembly comprises a lower clamping piece and an upper clamping piece which are detachably connected with each other;

the wire wheel assemblies are arranged at intervals in the length direction of the supporting platform, each wire wheel assembly comprises a first support, a second support, a wire wheel set and a transmission shaft, the first support and the second support are arranged in the width direction of the supporting platform at intervals, the transmission shafts can be rotatably connected to the first support and the second support along the central axes of the transmission shafts, each wire wheel set comprises a plurality of wire wheels stacked in the thickness direction, each wire wheel is fixedly arranged on the transmission shaft in a penetrating manner in the circumferential direction, and the transmission shafts are arranged to slide in the width direction of the supporting platform;

the wire pressing assembly is arranged between the two wire guide wheel assemblies, and the wire guide wheel assemblies are arranged on the same side of the support platform.

Further, a roller is further arranged between the first support and the second support, wherein the outer surface of the roller can rotate around the central axis of the roller.

Further, the upper surface of the supporting platform is provided with a mounting groove corresponding to the wire pressing assembly.

Further, a first tooth-shaped structure is arranged on the length direction of one face of the upper clamping piece, which faces the lower clamping piece, a second tooth-shaped structure is arranged on the length direction of one face of the lower clamping piece, which faces the upper clamping piece, and the upper surface of the second tooth-shaped structure is flush with or sunk on the upper surface of the supporting platform, wherein the first tooth-shaped structure and the second tooth-shaped structure are oppositely arranged.

Further, the upper clamp is hinged to one end of the lower clamp in the length direction.

Further, the device for cable combustion experiments further comprises a first driving motor assembly, wherein the first driving motor assembly is used for driving one of the two transmission shafts to rotate.

Further, the first driving motor component and the transmission shaft form fixed connection in the length direction of the transmission shaft, and the first driving motor component is slidably arranged on the support platform in the length direction of the transmission shaft.

Further, the device for cable combustion experiments further comprises a second driving motor assembly, wherein the first driving motor assembly is used for driving the other of the two transmission shafts to rotate, and the first driving motor assembly is matched with the second driving motor assembly in work.

Further, a distance between the second support and the first support is adjustable.

The invention also provides an operation method, which is applied to the device for the cable combustion experiment and comprises the following steps:

arranging the wire pressing assembly on a supporting platform;

assembling a wire guide wheel assembly;

sequentially winding cables on the two wire wheel sets;

gradually drawing out the wire guide wheel assembly while rotating a rotating transmission shaft, wherein the drawing-out direction is the tail end side of the cable;

combining the upper clamping member with the lower clamping member;

and taking out the wire wheel set.

According to the device for the cable combustion experiment and the operation method, provided by the invention, the convenient winding of the cable is realized through the ordered arrangement of the wire wheels in the two wire wheel assemblies and the smooth periphery of the wire wheels, and the cable is not required to be cut in the process; the combination of the two characteristics of the wire guide wheel fixedly penetrating the transmission shaft in the circumferential direction and the transmission shaft arranged to slide in the width direction of the supporting platform realizes that a wire tightening process can be performed after winding is completed, so that the tension of the cable is further optimized.

Drawings

FIG. 1 is a schematic view of a cable burn test apparatus according to an embodiment of the present invention (the cable assembly is in a free state);

FIG. 2 is a schematic view of an apparatus for cable burn testing according to an embodiment of the present invention (the cable pressing assembly is in a combined state);

FIG. 3 is a schematic view of the apparatus for cable burn testing according to an embodiment of the present invention;

fig. 4 is a schematic view showing the use of the apparatus for cable combustion test (process of drawing out the drive shaft) according to an embodiment of the present invention.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, units, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.

It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Referring to fig. 1 to 4, in an embodiment of the present invention, an apparatus for a cable combustion experiment includes:

a support platform 100 for supporting the cable combustion experiment device;

the two wire pressing assemblies 200 are detachably arranged on the supporting platform 100 and are arranged at intervals in the length direction of the supporting platform 100, and the wire pressing assemblies 200 comprise a lower clamping piece 210 and an upper clamping piece 220 which are detachably connected with each other;

the wire wheel assemblies 300 are arranged at intervals in the length direction of the support platform 100, the wire wheel assemblies 300 comprise a first support 310, a second support 320, a wire wheel set 330 and a transmission shaft 340, the first support 310 and the second support 320 are arranged at intervals in the width direction of the support platform 100, the transmission shaft 340 can be rotatably connected to the first support 310 and the second support 320 along the central axis of the transmission shaft 340, the wire wheel set 330 comprises a plurality of wire wheels stacked in the thickness direction, the wire wheels are fixedly arranged on the transmission shaft 340 in a penetrating manner in the circumferential direction, and the transmission shaft 340 is arranged to slide in the width direction of the support platform 100;

the length direction of the wire pressing assembly 200 and the length direction of the wire guiding wheel assembly 300 are perpendicular to the length direction of the supporting platform 100, and the two wire pressing assemblies 200 are disposed between the two wire guiding wheel assemblies 300.

The use of a protective sheath of polymeric material is essentially the only choice in the prior art, whether it be a data cable or a power supply cable. In different application scenes, each application area defines different parameters for the expressive force of the cable under the condition of fire, and the parameters are obtained in various types of combustion experiments. During combustion experiments, it is often required to fix a number of cables side by side in a certain length (e.g. 20 cables 5 meters long). In the fixing process, two fixing structures are often used, the cables which are arranged side by side are fixed on the two fixing structures, and when a combustion experiment is carried out, the two fixing structures and the cables fixed on the two fixing structures are placed into a combustion experiment box together so as to carry out the test of various parameters. In the fixing process, if the cable is not cut, the side-by-side placement of the cable is not facilitated, and the cutting operation is performed, and a lot of time is required even if a tool is used. Particularly, whether a cable is cut or not is difficult to solve, the fixing problem of the cable is abnormal, if the cables arranged side by side are uneven in length, the stress conditions of the cables are different, and then a certain uncertainty is formed on the result of a combustion experiment.

In the present invention, the support platform 100 is used as a support for the cable combustion experimental device, and the support platform 100 can be placed on the ground or a bearing structure thereof, so as to facilitate operation. The wire pressing assembly 200 functions to fix cables aligned between the two wire guide roller assemblies 300.

Next, an operation method of the cable combustion experimental apparatus will be described, first defining one of the two wire guide wheel assemblies 300 as an operation position, and in particular, a position of the first support 310, as follows:

in the preparation process, the wire pressing assembly 200 is arranged on the supporting platform 100, and the lower clamping piece 210 and the upper clamping piece 220 are in a separated state, so that the wire guiding wheel assembly 300 is assembled;

the winding process starts from the operation position, the cables are sequentially wound on the two wire wheel sets 330 (the winding process is not limited to the winding process of winding on the wire wheels with the same sequence on the two wire wheel sets 330, and the winding process can be performed at the corresponding positions according to the experimental design requirements), the convenient winding of the cables is realized through the ordered arrangement of the two wire wheel sets 330 and the smooth periphery of the wire wheels, and the cutting of the cables is not needed in the process;

a wire tightening process, after the winding process is completed, rotating the transmission shaft 340 while gradually drawing the transmission shaft 340 out of the wire guide wheel assembly 300 at the opposite side of the operation position of the wire guide wheel assembly 300, in which the transmission shaft 340 completes a process of gradually tightening the wire from the operation position, so that the wire of the cable is more tightly wound (the wire tightening operation is not necessary, and the wire tightening operation can be performed under the condition of higher winding quality requirement);

a clamping process for combining the upper clamping member 220 with the lower clamping member 210, the specific combination method being dependent on the specific structure;

the wire wheel set 330 is removed during the removal process, and the two wire pressing assemblies 200 and the cables fixed thereon can be removed for the combustion test.

If the device for driving the transmission shaft 340 is correspondingly arranged on the device for cable combustion experiment, the operation strength can be reduced in the winding process or the wire tightening process.

To achieve circumferential fixation of the wire guide wheel by the drive shaft 340, the cross section of the drive shaft 340 may be non-circular, such as rectangular. While the transmission shaft 340 is rotatable on the first support 310 and the second support 320 along its own central axis, corresponding bearings need to be provided on the first support 310 and the second support 320.

In conclusion, the convenient winding of the cable is realized through the orderly arrangement of the wire guide wheels in the two wire guide wheel assemblies and the smooth periphery of the wire guide wheels, and the cable is not required to be cut in the process; the combination of the two characteristics of the wire guide wheel being fixedly threaded through the driving shaft 340 in the circumferential direction and the driving shaft 340 being arranged to slide in the width direction of the support platform 100 enables a tightening process to be performed after the winding is completed, so that the cable tension is further optimized.

Referring to fig. 1 to 4, in one embodiment, a roller 350 is further provided between the first support 310 and the second support 320, wherein an outer surface of the roller 350 is rotatable about a central axis thereof.

In this embodiment, when the cable is wound around the wire guide wheel, the combination of the roller 350 and the wire guide wheel assembly 300 can realize that the cable is driven by both, so that the threading process is simplified, and the cable can be threaded from one end of the roller 350 and waiting for the cable to be threaded from the other end of the roller 350. The roller 350 may be driven to perform its function, and the complexity of the cable burn test device is increased by providing a driving force for it alone. The roller 350 includes a roller center shaft and a roller outer ring rotatably disposed on the roller center shaft. In particular, due to the presence of the roller 350, the clamping action of the roller 350 and the wire guide wheel can largely avoid the loosening or unwinding of the passed wire during the winding process of the wire.

In one embodiment, the upper surface of the support platform 100 is provided with a mounting groove corresponding to the wire pressing assembly 200.

In this embodiment, the installation groove can limit the movement of the wire pressing assembly 200, and the structural fit between the two can facilitate the removal of the wire pressing assembly 200 from the support platform 100. The wire pressing assembly 200 receives a smaller external force without requiring a structure such as a bolt assembly for relative fixation, so that the above mounting groove can perform its function. The number of mounting slots may also be plural, so that the corresponding use of unused mounting slots may function under different combustion implementation criteria, although it is preferred that the wire guide wheel assembly 300 be correspondingly positioned.

In one embodiment, a first tooth structure is disposed on a surface of the upper clamping member 220 facing the lower clamping member 210 in a length direction, and a second tooth structure is disposed on a surface of the lower clamping member 210 facing the upper clamping member 220 in a length direction, and an upper surface of the second tooth structure is flush with or sunk on an upper surface of the support platform 100, wherein the first tooth structure is disposed opposite to the second tooth structure.

In the process of performing the burning test, the outer skin of the cable is burned out as the test is performed, the outer skin at the position of the wire pressing assembly 200 is burned out, so that the clamping effect of the wire pressing assembly 200 is eliminated, and the normal performance of the burning test is negatively affected. In this embodiment, by adding the first tooth structure and the second tooth structure, and defining that the upper surface of the second tooth structure does not exceed the upper surface of the supporting platform 100, the second tooth structure does not interfere with the winding process of the cable, and when the winding process is completed, the upper clamping member 220 is combined with the lower clamping member 210, and at this time, the first tooth structure and the second tooth structure can pierce the outer skin to fix the core of the cable, so that the upper clamping member 220 can always perform excellent clamping towards the lower clamping member 210 in the cable combustion experiment.

Referring to fig. 1 to 4, in one embodiment, the upper clamp 220 is hinged to one end of the lower clamp 210 in a length direction.

If the clamping process of the wire pressing assembly 200 is performed simultaneously for the cables arranged in sequence, the pressure generated by facing the plurality of cables is smaller, or the pressure needs to be provided larger, so that the clamping effect cannot be ensured. In this embodiment, the upper clamping member 220 and the lower clamping member are hinged, so that the cables arranged in sequence are sequentially clamped in the process of combining the upper clamping member 220 and the lower clamping member 210, and the pressure provided is high, so that the clamping effect is good.

Referring to fig. 1 to 4, in one embodiment, the apparatus for cable combustion experiments further includes a first driving motor assembly 400, and the first driving motor assembly 400 is used to drive one of the two driving shafts 340 to rotate.

In this embodiment, the first driving motor assembly 400 drives one transmission shaft 340, so that the working strength of an operator is reduced, and particularly, when the number of cables required for experiments is large, the mechanical driving mode is more efficient.

In one embodiment, the first driving motor assembly 400 and the driving shaft 340 form a fixed connection in the length direction of the driving shaft 340, and the first driving motor assembly 400 is slidably disposed on the support platform 100 in the length direction of the driving shaft 340.

In this embodiment, the first driving motor assembly 400 not only can drive the transmission shaft 340 to rotate, but also forms a fixation with the transmission shaft 340 in the length direction of the transmission shaft 340, when the first driving motor assembly 400 slides on the support platform 100, the transmission shaft 340 will slide, and the driving forces applied by the plurality of wire guide wheels gradually drop, which will be further described in the following operation method embodiments.

In one embodiment, the cable combustion experimental apparatus further comprises a second driving motor assembly, and the first driving motor assembly 400 is used for driving the other of the two transmission shafts 340 to rotate, wherein the first driving motor assembly 400 is matched with the second driving motor assembly in operation.

In this embodiment, by adding a second driving motor assembly, both wire guide wheel assemblies 300 have their own driving systems, so that the driving force provided by the whole cable combustion experimental device is more in the process of threading the cable, and the working strength of operators is reduced. Specifically, the structure and arrangement of the second driving motor assembly refers to the arrangement structure and manner of the first driving motor assembly 400.

In one embodiment, the distance between the second support 320 and the first support 310 is adjustable.

In different applications, where the number or types of cables may be tested is different, it may be advantageous to have the wire guide wheel be number or type-wise processed, where the distance between the second support 320 and the first support 310 is adjustable. The above distance-adjustable setting may be achieved by the fixed position adjustment of the second support 320 and the first support 310 on the support platform 100.

In one embodiment, a pay-off spool is also provided on the support platform 100.

In this embodiment, the device for cable burning experiments provides the unwrapping wire axle, and the cable is twining on the storage bobbin, then in the unwrapping wire in-process of cable, can utilize foretell unwrapping wire axle, realizes the rotation of storage bobbin, has promoted the convenience of operation.

The invention also provides an operation method, which is applied to the device for the cable combustion experiment and comprises the following steps:

disposing the wire pressing assembly 200 on the support platform 100;

the wire wheel assembly 300 is assembled;

sequentially winding the upper cable on the two wire wheel sets 330;

gradually drawing out the wire guide wheel assembly 300 while rotating one rotating transmission shaft 340, wherein the drawing-out direction is the end side of the cable;

combining the upper clamp 220 with the lower clamp 210;

the wire wheel set 330 is removed.

In the above method, the wire pressing assembly 200 is set to the support platform 100 in a preparation process, and the lower clamping member 210 and the upper clamping member 220 are in a separated state, so that the wire guide wheel assembly 300 is assembled;

the winding process starts from the operation position, the cables are sequentially wound on the two wire wheel sets 330 (the winding process is not limited to the winding process of winding on the wire wheels with the same sequence on the two wire wheel sets 330, and the winding process can be performed at the corresponding positions according to the experimental design requirements), the convenient winding of the cables is realized through the ordered arrangement of the two wire wheel sets 330 and the smooth periphery of the wire wheels, and the cutting of the cables is not needed in the process;

a wire tightening process, after the winding process is completed, rotating the transmission shaft 340 while gradually withdrawing the transmission shaft 340 from the wire guide wheel assembly 300 (i.e., the direction of withdrawing the transmission shaft 340 is the end side of the wire) at the opposite side of the operation position of the wire guide wheel assembly 300, in which the transmission shaft 340 completes a process of gradually tightening the wire from the operation position, so that the wire of the wire is more tightly wound (the wire tightening operation is not necessary, and can be performed under the condition of higher winding quality requirement);

a clamping process for combining the upper clamping member 220 with the lower clamping member 210, the specific combination method being dependent on the specific structure;

the wire wheel set 330 is removed during the removal process, and the two wire pressing assemblies 200 and the cables fixed thereon can be removed for the combustion test. The convenient winding of the cable is realized through the ordered arrangement of the wire guide wheels in the two wire guide wheel assemblies and the smooth periphery of the wire guide wheels, and the cable is not required to be cut in the process; the combination of the two characteristics of the wire guide wheel being fixedly threaded through the driving shaft 340 in the circumferential direction and the driving shaft 340 being arranged to slide in the width direction of the support platform 100 enables a tightening process to be performed after the winding is completed, so that the cable tension is further optimized.

In summary, according to the device and the operation method for the cable combustion experiment provided by the invention, the cable is conveniently wound through the order arrangement of the wire guide wheels in the two wire guide wheel assemblies and the smooth periphery of the wire guide wheels, and the cable is not required to be cut in the process; the combination of the two characteristics of the wire guide wheel being fixedly threaded through the driving shaft 340 in the circumferential direction and the driving shaft 340 being arranged to slide in the width direction of the support platform 100 enables a tightening process to be performed after the winding is completed, so that the cable tension is further optimized.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.

Claims (10)

1. A device for cable burn experiments, comprising:

a support platform (100) used as a support of the cable combustion experimental device;

the two wire pressing assemblies (200) are detachably arranged on the supporting platform (100) and are arranged at intervals in the length direction of the supporting platform (100), and the wire pressing assemblies (200) comprise a lower clamping piece (210) and an upper clamping piece (220) which are detachably connected with each other;

the wire wheel assemblies (300) are arranged at intervals in the length direction of the supporting platform (100), the wire wheel assemblies (300) comprise a first support (310), a second support (320), a wire wheel set (330) and a transmission shaft (340), the first support (310) and the second support (320) are arranged in the width direction of the supporting platform (100) at intervals, the transmission shaft (340) can be connected to the first support (310) and the second support (320) in a rotating mode along the center axis of the transmission shaft, the wire wheel set (330) comprises a plurality of wire wheels stacked in the thickness direction, the wire wheels are fixedly arranged on the transmission shaft (340) in a penetrating mode in the circumferential direction, and the transmission shaft (340) is arranged to slide in the width direction of the supporting platform (100);

the length direction of the wire pressing assembly (200) and the length direction of the wire guide wheel assembly (300) are perpendicular to the length direction of the supporting platform (100), and the two wire pressing assemblies (200) are arranged between the two wire guide wheel assemblies (300).

2. The device for cable burn test according to claim 1, wherein a roller (350) is further provided between the first support (310) and the second support (320), wherein an outer surface of the roller (350) is rotatable about its central axis.

3. The device for cable burn-up experiments according to claim 1, wherein the upper surface of the support platform (100) is provided with a mounting groove corresponding to the wire pressing assembly (200).

4. A device for cable combustion experiments according to claim 3, wherein a first toothed structure is provided on a surface of the upper clamping member (220) facing the lower clamping member (210) in a length direction, a second toothed structure is provided on a surface of the lower clamping member (210) facing the upper clamping member (220) in a length direction, and an upper surface of the second toothed structure is flush with or sunk on an upper surface of the supporting platform (100), wherein the first toothed structure is arranged opposite to the second toothed structure.

5. The device for cable burn testing of claim 4, wherein the upper clamp (220) is hinged to one end of the lower clamp (210) in a length direction.

6. The device for cable burn testing according to claim 1, further comprising a first drive motor assembly (400), said first drive motor assembly (400) being adapted to drive one of two said drive shafts (340) in rotation.

7. The device for cable combustion experiments according to claim 6, wherein the first driving motor assembly (400) and the driving shaft (340) form a fixed connection in the length direction of the driving shaft (340), and the first driving motor assembly (400) is slidably arranged on the supporting platform (100) in the length direction of the driving shaft (340).

8. The device for cable burn testing of claim 7, further comprising a second drive motor assembly, said first drive motor assembly (400) for driving the other of said two drive shafts (340) in rotation, wherein said first drive motor assembly (400) is mated with the operation of said second drive motor assembly.

9. The device for cable burn tests according to any one of claims 1 to 8, wherein the distance between the second support (320) and the first support (310) is adjustable.

10. A method of operation for use in a cable burn test apparatus according to any one of claims 1 to 9, comprising:

the line pressing assembly (200) is arranged on the supporting platform (100);

assembling the wire guide wheel assembly (300);

sequentially winding an upper cable on the two wire wheel sets (330);

is gradually drawn out of the wire guide wheel assembly (300) while rotating a rotating transmission shaft (340), wherein,

the drawing direction is one side of the tail end of the cable;

combining the upper clamp (220) with the lower clamp (210);

and taking out the wire guide wheel set (330).

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