CN116908006A - High-temperature stretching detection equipment and method for fireproof cable processing - Google Patents

Abstract

The invention discloses high-temperature stretching detection equipment and a high-temperature stretching detection method for processing a fireproof cable, which belong to the technical field of cable detection. The high-temperature tensile testing equipment has various operation modes, can perform a cable high-temperature baking test, a cable high-temperature baking tensile test, a cable high-temperature baking torsion test and a cable high-temperature baking torsion tensile test, has multiple application scenes, and can perform corresponding testing operations according to different production testing requirements; the cable has two mounting modes, one is rotationally connected, the other is fixedly connected, the cable can be replaced according to different test operations, and the structures of the rotary clamping and the fixed clamping are designed in a targeted manner; the automatic degree is high, and accuracy, efficient have reduced the cost of labor.

Description

High-temperature stretching detection equipment and method for fireproof cable processing

Technical Field

The invention relates to cable stretching detection equipment, in particular to high-temperature stretching detection equipment and method for fireproof cable processing, and belongs to the technical field of cable detection.

Background

The fireproof cable is characterized in that in a fire accident, the fireproof cable can normally operate for a certain time under the condition of external flame combustion, the integrity of a cable line is kept, and the normal operation of line equipment is kept, so that the fireproof cable needs to be subjected to an aging test before being put into production and used so as to know the performances of the cable, such as fire resistance, stretching and the like;

the conventional cable testing device is generally characterized in that a cable is placed in a testing box for burning, heating and ageing, but the burning, heating and ageing are uneven, so that the testing accuracy is poor, the testing device is most difficult to maintain the tensile test at high temperature, the operation modes are few, the tensile, burning and twisting tests are most separated and independently tested, and the degree of automation is low.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide high-temperature stretching detection equipment and method for processing a fireproof cable, so as to solve the problems in the background art.

The aim of the invention can be achieved by the following technical scheme:

the high-temperature stretching detection equipment for fireproof cable processing comprises a machine table, wherein a tail end fixing assembly, a tail end rotating assembly and a clamping rotating assembly are arranged above the machine table, and are sequentially arranged;

the tail end fixing assembly comprises a fourth bracket, a fifth bracket and a sixth bracket, wherein two groups of wire clamping blocks which move in opposite directions are arranged in the sixth bracket;

the tail end rotating assembly comprises a seventh bracket and an eighth bracket, and two groups of semicircular needle bearings which move in opposite directions are arranged in the seventh bracket;

the clamping rotating assembly comprises an outer machine body, a front cover, a main shaft, a pull rod, a telescopic cover and a third electric cylinder, the front end of the outer machine body is provided with the front cover, the rear end of the outer machine body is provided with the telescopic cover which is in running fit, the main shaft, the outer machine body, the front cover and the telescopic cover are concentric, and the front end of the main shaft is fixedly connected with the outer machine body.

Preferably, the board upper surface is equipped with gliding first support and fixed connection's high temperature test support, first electric jar flexible end and first support fixed connection, first support upper end is equipped with fixed connection's second support and third support, second support side is equipped with the first trompil that runs through, be equipped with fixed connection's first motor in the second support, be equipped with fixed connection's first gear in the first motor shaft, be equipped with linear bearing in the third support, be equipped with the isolation box in the high temperature test support, the isolation box top is equipped with the flame projecting head.

Preferably, the second electric cylinder fixedly connected is arranged inside the fourth bracket, a first driving shaft distributed in an array is rotationally arranged between the fifth bracket and the sixth bracket, a first pushing block and a second pushing block fixedly connected are arranged on the first driving shaft, a first guide shaft distributed in an array is arranged in the sixth bracket, the wire clamping block slides along the first guide shaft, the wire clamping block is driven to move when the first pushing block rotates, a rotating wheel in rotary fit is arranged at the lower end of the second pushing block, a slidable fastening block is arranged below the second electric cylinder, the fastening block is pushed to advance by the second electric cylinder, and the rotating wheel and the second pushing block are extruded by the guide block so as to drive the first pushing block to synchronously rotate.

Preferably, a second guide shaft distributed in an array is arranged in the seventh bracket, the semicircular needle roller bearings slide along the second guide shaft, a second driving shaft distributed in an array is rotationally arranged between the seventh bracket and the eighth bracket, a second gear and a third pushing block which are fixedly connected are arranged on the second driving shaft, the third pushing block has the same structure as the first pushing block, and the semicircular needle roller bearings are driven to move when the third pushing block rotates, so that the second gears are meshed with each other;

the side of the eighth bracket is provided with a second motor, a third gear fixedly connected with the second motor is arranged on a rotating shaft of the second motor, the third gear is meshed with the second gear, the third gear drives the second gear to rotate in opposite directions, and the second gear drives a second driving shaft and a third pushing block to rotate, so that the semicircular needle roller bearing is driven to move in opposite directions.

Preferably, the outer machine body is arranged in the linear bearing, third electric cylinders which are fixedly connected are arranged on two sides of the second support, the third electric cylinders push the telescopic cover to stretch, and the main shaft rotates in the first opening.

Preferably, the inner groove distributed circumferentially is arranged in the outer machine body, the first guide groove distributed axially is arranged on the front cover, the top plate is arranged at the front end of the front cover, the expanding material receiving opening is arranged at the center of the top plate, the circular grooves penetrating through are formed in the center of the top plate, the front cover and the outer machine body, and the top plate, the front cover and the outer machine body penetrate through and are fixedly connected through fasteners.

Preferably, sliding clamping blocks in sliding fit are arranged in the first guide grooves, pulling grooves are formed in the sliding clamping blocks, rotating pull rods are arranged in the inner grooves, one ends of the pull rods are inserted into the pulling grooves, and rotating pushing wheels are arranged at the other ends of the pull rods.

Preferably, a fourth gear fixedly connected with the main shaft and a fourth pushing block in sliding are arranged on the main shaft, the fourth gear is meshed with the first gear, a second guide groove is formed in the main shaft, the fourth pushing block slides along the second guide groove, a rotating ring in running fit is arranged on the rear end face of the fourth pushing block, pushing grooves in circumferential distribution are formed in the fourth pushing block, and the pushing wheels slide in the pushing grooves.

Preferably, a rotating push ring is arranged in the rotating ring, a clamping groove is formed in the rear end of the telescopic cover, extension rods on two sides of the push ring penetrate through the clamping groove, a fixedly connected mounting block is arranged at the telescopic end of the third electric cylinder, and the mounting block is rotationally connected with the extension rods on two sides of the push ring.

A high-temperature tensile detection method for a fireproof cable comprises the following steps:

a section of cable to be detected is placed between the cable clamping block and the semicircular needle roller bearing, the other end of the cable is inserted into the enlarged material receiving opening, penetrates through the top plate, the front cover and the outer machine body, stretches into the outer machine body and then stops, the third electric cylinder pushes the rotating ring and the fourth pushing block to advance, and the pull rod rotates to drive the sliding clamping block to clamp the cable;

when the cable high-temperature baking test is needed, the second motor drives the second driving shaft and the third pushing block to rotate, the third pushing block drives the semicircular needle roller bearing to clamp the cable in opposite directions, the first motor drives the main shaft, the fourth pushing block, the outer machine body, the pull rod and the front cover to rotate, and the fire-spraying head sprays fire to test the fire resistance of the outer layer of the cable;

when the cable high-temperature baking and stretching test is needed, the cable high-temperature baking operation is firstly carried out, the flame spraying head can be independently selected to start and stop, the second electric cylinder pushes the fastening block to advance to drive the second pushing block, the first driving shaft and the first pushing block to rotate, the wire clamping block advances in opposite directions to clamp the locking cable, the semicircular needle roller bearing retreats to separate from the cable, the first electric cylinder pulls the first bracket, the outer machine body, the front cover, the main shaft and the pull rod to retreat, thereby stretching the cable and testing the thermal stretching condition of the cable,

when the cable high-temperature baking distortion test is needed, the cable high-temperature baking operation is firstly carried out, the flame spraying head can be independently selected to start and stop, the second electric cylinder pushes the fastening block to move forward to drive the second pushing block, the first driving shaft and the first pushing block to rotate, the wire clamping block moves forward in opposite directions to clamp the locking cable, the semicircular needle roller bearing moves backward to separate from the cable, the first motor drives the main shaft, the fourth pushing block, the outer machine body, the front cover and the pull rod to rotate, so that the cable is driven to rotate and twist, and the thermal distortion condition of the cable is tested;

when the cable high-temperature baking, twisting and stretching test is needed, the cable high-temperature baking, stretching and testing is carried out at first, then the cable high-temperature baking, stretching and testing and the cable high-temperature baking, twisting and stretching test are carried out synchronously, and the thermal twisting and stretching condition of the cable is tested.

The invention has the beneficial effects that:

1. the high-temperature tensile testing equipment has various operation modes, can perform a cable high-temperature baking test, a cable high-temperature baking tensile test, a cable high-temperature baking torsion test and a cable high-temperature baking torsion tensile test, has multiple application scenes, and can perform corresponding testing operations according to different production testing requirements;

2. the cable in the high-temperature tensile detection equipment has two mounting modes, one is rotationally connected, the other is fixedly connected, the cable can be replaced according to different test operations, and the rotating clamping and the fixed clamping structure are designed in a targeted manner, so that the rotating clamping is realized by adopting motor gear meshing direct connection operation and only a semicircular needle bearing is in contact with the cable for rotation assistance, the fixed clamping is required to prevent the cable from falling off during testing, the hard locking structure is designed, and the cable clamping block is driven by the fastening block to clamp the cable, so that the falling off risk is reduced;

3. the telescopic cover in the high-temperature stretching detection equipment can stretch along with the movement of the fourth pushing block, so that the matched operation of the fourth pushing block and the pushing wheel can be effectively protected, the phenomenon that sundries fall into the equipment to influence the cable clamping effect during operation is avoided, workers are prevented from being clamped, and the safety is particularly good;

4. the high-temperature stretching detection equipment is simple and quick to operate, high in automation degree, few in manual participation links, and capable of automatically completing subsequent detection operations only by manually placing the cable to be detected, high in accuracy and efficiency and reduced in labor cost.

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, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.

FIG. 1 is a schematic diagram of a high temperature tensile testing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a portion of a high-temperature tensile testing apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view showing a combined structure of the tail end fixing assembly and the tail end rotating assembly according to the embodiment of the present invention;

FIG. 4 is a schematic view of a tail end fixing assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view of a tail rotor assembly according to an embodiment of the present invention;

FIG. 6 is a schematic view of a clamping and rotating assembly according to an embodiment of the present invention;

FIG. 7 is a schematic view of a portion of a clamping and rotating assembly according to an embodiment of the present invention;

FIG. 8 is a schematic view of the structure of a spindle in an embodiment of the present invention;

FIG. 9 is a schematic view of a portion of a clamp-and-turn assembly in accordance with an embodiment of the present invention;

FIG. 10 is a schematic view of the structure of the telescopic hood and the third cylinder according to the embodiment of the present invention;

in the figure: 1. a machine table; 2. a tail end fixing assembly; 3. a tail end rotating assembly; 4. an outer body; 5. a front cover; 6. a main shaft; 7. a pull rod; 8. a telescoping shield; 9. a third electric cylinder; 11. a first bracket; 12. a second bracket; 13. a third bracket; 14. a high-temperature test bracket; 15. a first electric cylinder; 16. a first motor; 21. a fourth bracket; 22. a fifth bracket; 23. a sixth bracket; 24. a first drive shaft; 25. a fastening block; 26. a second electric cylinder; 27. a guide frame; 31. a seventh bracket; 32. an eighth bracket; 33. a second motor; 34. a second drive shaft; 41. a first annular slot; 42. a second annular slot; 43. an inner tank; 51. a first guide groove; 52. a top plate; 53. enlarging a receiving port; 61. a fourth gear; 62. a rotating ring; 63. a fourth pushing block; 71. a second opening; 72. sliding clamping blocks; 73. a push wheel; 81. a clamping groove; the method comprises the steps of carrying out a first treatment on the surface of the 91. A mounting block; 121. a first opening; 131. a linear bearing; 141. an isolation box; 142. a flame spraying head; 161. a first gear; 231. a first guide shaft; 232. a wire clamping block; 241. a first push block; 242. a second pushing block; 243. a rotating wheel; 251. a guide block; 271. a guide post; 311. a second guide shaft; 312. semicircular needle roller bearings; 313. a third pushing block; 331. a third gear; 341. a second gear; 611. a second guide groove; 621. pushing the ring; 631. a pushing groove; 721. pulling the slot.

Detailed Description

The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 10, the present embodiment provides a high-temperature tensile testing apparatus for processing a fireproof cable, the high-temperature tensile testing apparatus includes a machine 1, a tail end fixing assembly 2, a tail end rotating assembly 3 and a clamping rotating assembly are disposed above the machine 1, and the tail end fixing assembly 2, the tail end rotating assembly 3 and the clamping rotating assembly are sequentially disposed.

Further, the upper surface of the machine table 1 is provided with a sliding first bracket 11, a fixedly connected high-temperature test bracket 14 and a first electric cylinder 15, the first bracket 11 moves and guides through a sliding rail and sliding block assembly, the telescopic end of the first electric cylinder 15 is fixedly connected with the first bracket 11, and the first electric cylinder 15 pushes the first bracket 11 to move.

Specifically, the upper end of the first bracket 11 is provided with a second bracket 12 and a third bracket 13 which are fixedly connected, the side surface of the second bracket 12 is provided with a first through hole 121, a first motor 16 which is fixedly connected is arranged in the second bracket 12, a first gear 161 which is fixedly connected is arranged on the rotating shaft of the first motor 16, a linear bearing 131 is arranged in the third bracket 13, the linear bearing 131 is concentric with the first through hole 121, an isolation box 141 is arranged in the high-temperature test bracket 14, and a flame spraying head 142 is arranged above the isolation box 141.

Further, the tail end fixing assembly 2 includes a fourth bracket 21, a fifth bracket 22 and a sixth bracket 23, the fourth bracket 21, the fifth bracket 22 and the sixth bracket 23 are all fixed on the machine 1, and two groups of wire clamping blocks 232 moving in opposite directions are arranged in the sixth bracket 23.

Specifically, a second electric cylinder 26 is fixedly connected inside the fourth bracket 21, a first driving shaft 24 which is distributed in an array is rotationally arranged between the fifth bracket 22 and the sixth bracket 23, a first pushing block 241 and a second pushing block 242 which are fixedly connected are arranged on the first driving shaft 24, a first guide shaft 231 which is distributed in an array is arranged in the sixth bracket 23, a wire clamping block 232 slides along the first guide shaft 231, a through sliding groove is further formed in the first pushing block 241, a rotary pushing column is mounted on the side surface of the wire clamping block 232, the pushing column on the side surface of the wire clamping block 232 is inserted into the sliding groove of the first pushing block 241, the wire clamping block 232 is driven to move in opposite directions to clamp a cable when the first pushing block 241 rotates, and a rotating wheel 243 which is in rotary fit is arranged at the lower end of the second pushing block 242;

the lower part of the second electric cylinder 26 is provided with a slidable fastening block 25 and a guide frame 27, both sides of the fastening block 25 are respectively provided with a guide block 251, the guide frame 27 is internally provided with guide posts 271 distributed in an array, the guide blocks 251 are in sliding fit with the guide posts 271, the telescopic end of the second electric cylinder 26 is fixedly connected with the fastening block, the second electric cylinder 26 pushes the fastening block to advance, the guide blocks 251 squeeze out the rotating wheel 243 and the second pushing block 242 to rotate, the second pushing block 242 drives the first pushing block 241 to rotate through the first driving shaft 24, and the first pushing block 241 drives the wire clamping block 232 to move in opposite directions.

Further, the tail end rotating assembly 3 includes a seventh bracket 31 and an eighth bracket 32, the seventh bracket 31 and the eighth bracket 32 are both fixed on the machine 1, and two groups of semicircular needle bearings 312 moving in opposite directions are arranged in the seventh bracket 31.

Specifically, the seventh support 31 is internally provided with second guide shafts 311 distributed in an array manner, the semicircular needle bearings 312 slide along the second guide shafts 311, the side surfaces of the semicircular needle bearings 312 are also provided with rotating pushing columns, a second driving shaft 34 distributed in an array manner is rotatably arranged between the seventh support 31 and the eighth support 32, the second driving shaft 34 is provided with a second gear 341 and a third pushing block 313 which are fixedly connected, the third pushing block 313 has the same structure as the first pushing block 241, the pushing columns on the side surfaces of the semicircular needle bearings 312 are inserted into sliding grooves of the third pushing block 313, the second gears 341 are meshed with each other, the side surfaces of the eighth support 32 are provided with a second motor 33, the second motor 33 is also fixed on the machine table 1, a third gear 331 which is fixedly connected is arranged on a rotating shaft of the second motor 33, the third gear 331 is meshed with the second gear 341, the third gear 331 drives the second gear 341 to rotate in opposite directions, and the second driving shaft 34 and the third pushing block 313 are driven to rotate in opposite directions, so that the semicircular needle bearings 312 are driven to move in opposite directions.

Further, the clamping rotating assembly comprises an outer machine body 4, a front cover 5, a main shaft 6, a pull rod 7, a telescopic cover 8 and a third electric cylinder 9, the outer machine body 4 is installed in a linear bearing 131, the front end of the outer machine body 4 is provided with the front cover 5, the rear end of the outer machine body 4 is provided with the telescopic cover 8, the telescopic cover 8 is structurally an organ cover, two sides of a second support 12 are respectively provided with the third electric cylinder 9 which is fixedly connected, the third electric cylinder 9 pushes the telescopic cover 8 to stretch, the main shaft 6 rotates in a first opening 121, the main shaft 6, the outer machine body 4, the front cover 5 and the telescopic cover 8 are concentric, and the front end of the main shaft 6 is fixedly connected with the outer machine body 4.

Specifically, a first annular slot 41 and a second annular slot 42 are arranged outside the outer machine body 4, a linear bearing 131 is sleeved on the first annular slot 41, the front end of the telescopic cover 8 is rotationally connected with the second annular slot 42, an inner groove 43 which is circumferentially distributed is arranged in the outer machine body 4, a first guide groove 51 which is axially distributed is arranged on the front cover 5, a top plate 52 is arranged at the front end of the front cover 5, an enlarged material receiving opening 53 is arranged at the center of the top plate 52, a circular slot which penetrates through is formed in the center of the top plate 52, the front cover 5 and the outer machine body 4, and the top plate 52, the front cover 5 and the outer machine body 4 are fixedly connected in a penetrating manner through fasteners;

the first guide grooves 51 are respectively provided with a sliding clamping block 72 in sliding fit, a pulling groove 721 is formed in the sliding clamping block 72, a rotary pull rod 7 is arranged in the inner groove 43, a second opening 71 is formed in the center of the pull rod 7, a rotating shaft penetrates through the second opening 71 and is fixed in the inner groove 43, so that the pull rod 7 is rotationally connected with the inner groove 43, one end of the pull rod 7 is inserted into the pulling groove 721, and the other end of the pull rod 7 is provided with a rotary pushing wheel 73;

the main shaft 6 is provided with a fourth gear 61 and a fourth sliding pushing block 63 which are fixedly connected, the fourth gear 61 is meshed with the first gear 161, the first motor 16 drives the main shaft 6 to rotate through the first gear 161 and the fourth gear 61, a second guide groove 611 is formed in the main shaft 6, the fourth pushing block 63 slides along the second guide groove 611, the rear end face of the fourth pushing block 63 is provided with a rotating ring 62 in a rotating fit manner, pushing grooves 631 are circumferentially distributed in the fourth pushing block 63, the pushing wheels 73 slide in the pushing grooves 631, the front ends of the pushing grooves 631 are inclined grooves, the rear ends of the pushing grooves 631 are horizontal grooves, when the fourth pushing block 63 advances, the pushing wheels 73 push the pushing wheels 73 to rise, one end of the pull rod 7 is driven to descend, and accordingly the sliding clamping blocks 72 are driven to move and lock;

the rotating ring 62 is internally provided with a rotating pushing ring 621, the rear end of the telescopic hood 8 is provided with a clamping groove 81, extension rods on two sides of the pushing ring 621 penetrate through the clamping groove 81, the telescopic end of the third electric cylinder 9 is provided with a fixedly connected mounting block 91, the mounting block 91 is rotationally connected with the extension rods on two sides of the pushing ring 621, the third electric cylinder 9 pushes the pushing ring 621 and the telescopic hood 8 to move, and when the pushing ring 621 moves, the rotating ring 62 and the fourth pushing block 63 are driven to synchronously move, so that the pull rod 7 and the sliding clamping block 72 are driven to move.

The embodiment provides a high-temperature stretching detection method for fireproof cable processing, which comprises the following steps:

a worker puts a section of cable to be detected between the wire clamping block 232 and the semicircular needle bearing 312, the other end of the cable is inserted into the enlarged material receiving opening 53, passes through the top plate 52, the front cover 5 and the outer machine body 4, stretches into the outer machine body 4 and then stops, the third electric cylinder 9 pushes the rotating ring 62 and the fourth pushing block 63 to advance, and the pull rod 7 rotates to drive the sliding clamping block 72 to clamp the cable;

when the cable high-temperature baking test is required, the second motor 33 drives the second driving shaft 34 and the third pushing block 313 to rotate, the third pushing block 313 drives the semicircular needle bearing 312 to clamp the cable in opposite directions, the first motor 16 drives the main shaft 6, the fourth pushing block 63, the outer machine body 4, the pull rod 7 and the front cover 5 to rotate, and the cable can synchronously rotate along with the main shaft 6 due to the fact that the semicircular needle bearing 312 is in rotary fit with the cable, the flame spraying head 142 performs flame spraying test on the fireproof performance of the outer layer of the cable, and the isolation box 141 prevents the outer layer of the cable from baking and dripping to a lower structure;

when the cable high-temperature baking and stretching test is needed, the cable high-temperature baking operation is firstly carried out, the flame spraying head 142 can be independently selected to start and stop, the second electric cylinder 26 pushes the fastening block 25 to advance to drive the second pushing block 242, the first driving shaft 24 and the first pushing block 241 to rotate, the wire clamping block 232 advances relatively to clamp the locking cable, the semicircular needle bearing 312 retreats to separate from the cable, and because the wire clamping block 232 is fixedly matched with the cable, the first electric cylinder 15 pulls the first bracket 11, the outer machine body 4, the front cover 5, the main shaft 6 and the pull rod 7 to retreat, thereby stretching the cable and testing the thermal stretching condition of the cable,

when the cable high-temperature baking distortion test is needed, the cable high-temperature baking operation is performed firstly, the flame spraying head 142 can be automatically selected to start and stop, the second electric cylinder 26 pushes the fastening block 25 to move forward to drive the second pushing block 242, the first driving shaft 24 and the first pushing block 241 to rotate, the wire clamping block 232 moves forward to clamp the locking cable, the semicircular needle roller bearing 312 moves backward to separate from the cable, and as the wire clamping block 232 is fixedly matched with the cable, the first electric motor 16 drives the main shaft 6, the fourth pushing block 63, the outer machine body 4, the front cover 5 and the pull rod 7 to rotate, so that the cable is driven to rotate and twist, and the thermal distortion condition of the cable is tested;

when the cable high-temperature baking, twisting and stretching test is needed, the cable high-temperature baking, stretching and testing is carried out at first, then the cable high-temperature baking, stretching and testing and the cable high-temperature baking, twisting and stretching test are carried out synchronously, and the thermal twisting and stretching condition of the cable is tested.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.

Claims (10)

1. The high-temperature stretching detection equipment for fireproof cable processing comprises a machine table (1), and is characterized in that a tail end fixing assembly (2), a tail end rotating assembly (3) and a clamping rotating assembly are arranged above the machine table (1), and the tail end fixing assembly (2), the tail end rotating assembly (3) and the clamping rotating assembly are sequentially arranged;

the tail end fixing assembly (2) comprises a fourth bracket (21), a fifth bracket (22) and a sixth bracket (23), wherein two groups of wire clamping blocks (232) which move in opposite directions are arranged in the sixth bracket (23);

the tail end rotating assembly (3) comprises a seventh bracket (31) and an eighth bracket (32), and two groups of semicircular needle bearings (312) which move oppositely are arranged in the seventh bracket (31);

the clamping rotating assembly comprises an outer machine body (4), a front cover (5), a main shaft (6), a pull rod (7), a telescopic cover (8) and a third electric cylinder (9), wherein the front end of the outer machine body (4) is provided with the front cover (5), the rear end of the outer machine body (4) is provided with the telescopic cover (8) which is in running fit, the main shaft (6), the outer machine body (4), the front cover (5) and the telescopic cover (8) are concentric, and the front end of the main shaft (6) is fixedly connected with the outer machine body (4).

2. The high-temperature tensile testing equipment for fireproof cable processing according to claim 1, wherein a first sliding support (11) and a high-temperature testing support (14) and a first electric cylinder (15) which are fixedly connected are arranged on the upper surface of the machine table (1), the telescopic end of the first electric cylinder (15) is fixedly connected with the first support (11), a second support (12) and a third support (13) which are fixedly connected are arranged at the upper end of the first support (11), a first penetrating hole (121) is formed in the side surface of the second support (12), a first motor (16) which is fixedly connected is arranged in the second support (12), a first gear (161) which is fixedly connected is arranged on a rotating shaft of the first motor (16), a linear bearing (131) is arranged in the third support (13), an isolation box (141) is arranged in the high-temperature testing support (14), and a flame spraying head (142) is arranged above the isolation box (141).

3. The high-temperature tensile testing device for processing the fireproof cable according to claim 2, wherein a second electric cylinder (26) which is fixedly connected is arranged in the fourth bracket (21), a first driving shaft (24) which is distributed in an array is rotationally arranged between the fifth bracket (22) and the sixth bracket (23), a first pushing block (241) and a second pushing block (242) which are fixedly connected are respectively arranged on the first driving shaft (24), a first guide shaft (231) which is distributed in an array is arranged in the sixth bracket (23), the wire clamping block (232) slides along the first guide shaft (231), the wire clamping block (232) is driven to move when the first pushing block (241) rotates, a rotating matched rotating wheel (243) is arranged at the lower end of the second pushing block (242), a slidable fastening block (25) is arranged below the second electric cylinder (26), the second electric cylinder (26) pushes the fastening block (25) to advance, the guide block (251) extrudes the rotating wheel (243) and the second pushing block (242), and accordingly the first pushing block (241) is driven to synchronously rotate.

4. The high-temperature tensile testing device for processing the fireproof cable according to claim 3, wherein the seventh bracket (31) is internally provided with second guide shafts (311) distributed in an array manner, the semicircular needle bearings (312) slide along the second guide shafts (311), second driving shafts (34) distributed in an array manner are rotatably arranged between the seventh bracket (31) and the eighth bracket (32), the second driving shafts (34) are provided with second gears (341) and third pushing blocks (313) which are fixedly connected, the third pushing blocks (313) have the same structure as the first pushing blocks (241), and the semicircular needle bearings (312) are driven to move when the third pushing blocks (313) rotate, and the second gears (341) are meshed with each other;

the eighth support (32) side is equipped with second motor (33), is equipped with fixed connection's third gear (331) in second motor (33) pivot, and third gear (331) and second gear (341) meshing, third gear (331) drive second gear (341) and rotate in opposite directions, and second gear (341) drive second drive shaft (34), third impeller (313) rotate to drive semicircle bearing (312) and remove in opposite directions.

5. The high-temperature tensile testing equipment for processing the fireproof cable according to claim 4, wherein the outer machine body (4) is installed in the linear bearing (131), third electric cylinders (9) which are fixedly connected are arranged on two sides of the second support (12), the third electric cylinders (9) push the telescopic cover (8) to stretch, and the main shaft (6) rotates in the first opening (121).

6. The high-temperature stretching detection device for fireproof cable processing according to claim 5, wherein an inner groove (43) which is circumferentially distributed is arranged in the outer machine body (4), a first guide groove (51) which is axially distributed is arranged on the front cover (5), a top plate (52) is arranged at the front end of the front cover (5), an enlarged material receiving opening (53) is arranged at the center of the top plate (52), a circular through groove is formed in the center of each of the top plate (52), the front cover (5) and the outer machine body (4), and the top plate (52), the front cover (5) and the outer machine body (4) are fixedly connected through fasteners.

7. The high-temperature tensile testing equipment for machining fireproof cables according to claim 6, wherein sliding clamping blocks (72) in sliding fit are arranged in the first guide grooves (51), pulling grooves (721) are formed in the sliding clamping blocks (72), rotary pull rods (7) are arranged in the inner grooves (43), one ends of the pull rods (7) are inserted into the pulling grooves (721), and rotary pushing wheels (73) are arranged at the other ends of the pull rods (7).

8. The high-temperature tensile testing equipment for machining fireproof cables according to claim 7, wherein a fourth gear (61) and a sliding fourth pushing block (63) are fixedly connected to the main shaft (6), the fourth gear (61) is meshed with the first gear (161), a second guide groove (611) is formed in the main shaft (6), the fourth pushing block (63) slides along the second guide groove (611), a rotating ring (62) in rotary fit is arranged on the rear end face of the fourth pushing block (63), pushing grooves (631) distributed circumferentially are formed in the fourth pushing block (63), and the pushing wheels (73) slide in the pushing grooves (631).

9. The high-temperature tensile testing equipment for processing the fireproof cable according to claim 8, wherein a rotating push ring (621) is arranged in the rotating ring (62), clamping grooves (81) are formed in the rear end of the telescopic cover (8), extension rods on two sides of the push ring (621) penetrate through the clamping grooves (81), a mounting block (91) fixedly connected with the telescopic end of the third electric cylinder (9) is arranged, and the mounting block (91) is rotatably connected with the extension rods on two sides of the push ring (621).

10. A method for detecting high-temperature tension of a fireproof cable based on the high-temperature tension detecting equipment for processing a fireproof cable according to claim 9, characterized by comprising the following steps:

a section of cable to be detected is put between a wire clamping block (232) and a semicircular needle bearing (312), the other end of the cable is inserted into an enlarged material receiving opening (53), passes through a top plate (52), a front cover (5) and an outer machine body (4), stretches into the outer machine body (4) and then stops, a third electric cylinder (9) pushes a rotating ring (62) and a fourth pushing block (63) to advance, and a pull rod (7) rotates to drive a sliding clamping block (72) to clamp the cable;

when a cable high-temperature baking test is required, the second motor (33) drives the second driving shaft (34) and the third pushing block (313) to rotate, the third pushing block (313) drives the semicircular needle roller bearing (312) to clamp the cable in opposite directions, the first motor (16) drives the main shaft (6), the fourth pushing block (63), the outer machine body (4), the pull rod (7) and the front cover (5) to rotate, and the flame spraying head (142) performs flame spraying to test the fireproof performance of the outer layer of the cable;

when the cable high-temperature baking and stretching test is needed, the cable high-temperature baking operation is firstly carried out, the flame spraying head (142) can be independently selected to start and stop, the second electric cylinder (26) pushes the fastening block (25) to advance to drive the second pushing block (242), the first driving shaft (24) and the first pushing block (241) to rotate, the wire clamping block (232) advances in opposite directions to clamp the locking cable, the semicircular needle roller bearing (312) retreats to be separated from the cable, the first electric cylinder (15) pulls the first bracket (11), the outer machine body (4), the front cover (5), the main shaft (6) and the pull rod (7) to retreat, thereby stretching the cable and testing the hot stretching condition of the cable,

when the cable high-temperature baking distortion test is needed, the cable high-temperature baking operation is firstly carried out, the flame spraying head (142) can be automatically selected to start and stop, the second electric cylinder (26) pushes the fastening block (25) to advance to drive the second pushing block (242), the first driving shaft (24) and the first pushing block (241) to rotate, the wire clamping block (232) advances in opposite directions to clamp the locking cable, the semicircular needle roller bearing (312) retreats to be separated from the cable, the first motor (16) drives the main shaft (6), the fourth pushing block (63), the outer machine body (4), the front cover (5) and the pull rod (7) to rotate, so that the cable is driven to rotate and twist, and the thermal distortion condition of the cable is tested;

when the cable high-temperature baking, twisting and stretching test is needed, the cable high-temperature baking, stretching and testing is carried out at first, then the cable high-temperature baking, stretching and testing and the cable high-temperature baking, twisting and stretching test are carried out synchronously, and the thermal twisting and stretching condition of the cable is tested.