Flame-retardant cable combustion test device

Abstract

The utility model relates to the technical field of flame-retardant cable quality detection, in particular to a flame-retardant cable combustion test device, which comprises a cabinet body and a combustion chamber arranged on the cabinet body, a mounting box is fixedly mounted on the bottom surface in the combustion chamber, a gear is rotatably connected in the mounting box, and the gear is rotatably connected with the cabinet body. And two racks are symmetrically connected to the outer surface of the gear in a meshed mode, pressing assemblies are slidably connected to the tops of the two racks, and a flame nozzle is installed in the middle of the top of the installation box. The advantages of the utility model are that the gear, the rack, the pressing assembly, the slope block, the connecting ring, the grip and the index plate are arranged, so that the pressure applied by the top block to the cable can be increased while the cable is tensioned, thereby effectively preventing the cable from being deformed and being separated from the constraint of the top block, improving the stability during the cable test, and improving the test efficiency. And moreover, a worker can accurately control the gear to rotate under the condition that the cabinet door is opened by utilizing the grip, so that the flame-retardant limit value of the cable in the tensioning state can be conveniently obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flame -retardant cable quality detection, especially a flame -retardant cable combustion test device. BACKGROUND

[0002] The flame -retardant cable combustion test device is a kind of equipment for testing the flame -retardant performance of cable under fire condition, it can simulate real fire environment, carries out combustion test to cable, to assess its performance in fire.

[0003] And cable is often in tension state when being used, the molecules of the outer skin material of cable will change after being pulled tight, the data of combustion test of flame -retardant cable is more accurate at this time.

[0004] The flame -retardant property testing device based on cable combustion test in the Chinese patent CN217766270U, the flame -retardant property testing device based on cable combustion test, rotates by bearing installation, it is convenient for cable to carry column to be installed in the outer circumference synchronous inside and outside movement adjustment of cable tensioning shaft by screw thread, it is convenient for cable end to be inserted into cable to carry column and be locked and fixed by cable locking column and be pulled tight, solve the problem that flame -retardant property testing fixture cannot pull tight cable when cable horizontal combustion test, it is inconvenient to add lead screw on bearing frame and make cable fixed block synchronous outward movement and pull tight cable.

[0005] But compared with the prior art in the related field, the diameter of the outer surface of flame -retardant cable changes after being pulled tight, and the locking degree of locking column is fixed, so when pulling force is applied to cable, the two ends of cable are easy to separate from cable carrying column, and then lead to test failure, and because the temperature when flame burns is high, to ensure safety, test device cannot carry out open test, therefore, it is necessary to carry out test in combustion cabinet, then continuously pull tight flame -retardant cable, to obtain the limit value of cable flame -retardant, but when the door of combustion cabinet is closed, cable cannot be pulled again according to demand, so it is necessary to open the door again to adjust tightness, thus lead to time -consuming and labor -intensive test process. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving at least one of the technical defects.

[0007] The utility model aims at overcoming the shortcomings of the prior art, solving the problems mentioned in the background art, and providing a flame -retardant cable combustion test device.

[0008] The utility model discloses a fire -retardant cable combustion test device, including the cabinet and the combustion chamber of the cabinet upper opening, the bottom surface fixed mounting of combustion chamber inside has installed box, the inside rotation of installed box is connected with gear, the outer surface symmetry of gear is engaged and is connected with two racks, and the top of two rack all is connected with the compression assembly of sliding, the top of installed box is installed with the blowtorch of the middle place, and

[0009] The compression assembly includes a support block slidably connected with the rack, an adjusting screw threadedly connected to the top of the support block, a top block rotatably connected to the top end of the adjusting screw, a collar fixedly connected to one side of the rack close to the top block, two rollers rotatably connected to the position close to the bottom of the support block, and a slope block fixedly connected to the position of the installed box corresponding to the rollers.

[0010] A rotating shaft is fixedly connected to the center of the gear, a connecting ring is fixedly connected to the outer surface of the bottom end of the rotating shaft, a connecting rod is fixedly connected to the outer surface of the connecting ring, a handle is slidably connected to one end of the connecting rod, a protractor disc is fixedly connected to one side of the installed box close to the handle, an insertion block is fixedly connected to one side of the handle close to the protractor disc, and a plurality of insertion slots matched with the insertion block are formed on the outer surface of the protractor disc.

[0011] Preferably, the cabinet is hingedly connected with a cabinet door on one side of the combustion chamber, and the cabinet and the installed box are both provided with a sealing groove corresponding to the position of the cabinet door.

[0012] By adopting the above technical scheme, the opening of the combustion chamber can be closed by cooperation of the sealing ring of the cabinet door and the sealing groove, so that the heat is prevented from being dissipated.

[0013] Preferably, the cross section of the rack is L-shaped, and the installed box is provided with a sliding groove corresponding to the position of the two racks.

[0014] By adopting the above technical scheme, the stability of the rack when sliding can be improved.

[0015] Preferably, a rectangular accommodating groove is formed at the bottom end of the support block corresponding to the position of the rack, and the support block is matched with the rectangular accommodating groove.

[0016] By adopting the above technical scheme, the stability of the support block when longitudinally sliding can be improved.

[0017] Preferably, a rotating knob is fixedly connected to the outer surface of the adjusting screw, a threaded hole matched with the adjusting screw is formed at the position of the support block corresponding to the position of the adjusting screw, a rotating hole is formed at the top end of the adjusting screw corresponding to the position of the top block, and a bearing is inlaid in the rotating hole.

[0018] By adopting the technical scheme, the adjusting screw can be conveniently rotated, so that the up-and-down sliding of the top block can be controlled when the adjusting screw rotates.

[0019] Preferably, the top of the top block is triangular, and the position of the sleeve ring on the top block is provided with a notch, and the inner wall of the sleeve ring and the top of the top block are both fixedly provided with a rubber layer.

[0020] By adopting the technical scheme, the constraint effect of the sleeve ring and the top block on the cable can be improved.

[0021] Preferably, the mounting box is fixedly provided with a partition plate directly below the gear, the position of the partition plate on the rotating shaft is provided with a rotating hole, and the rotating hole is inlaid with a bearing.

[0022] By adopting the technical scheme, the friction when the gear rotates can be reduced, and the stability when the gear rotates can be improved.

[0023] Preferably, the end of the insertion block away from the handle is provided with a chamfer, and the outer surface of the handle is fixedly provided with a rubber layer.

[0024] By adopting the technical scheme, the insertion block can conveniently enter the insertion slot by using the chamfer, so that the handle, the connecting rod and the connecting ring can be conveniently limited.

[0025] Compared with the prior art, the utility model has the following advantages:

[0026] The flame-retardant cable combustion test device is provided with a gear, a rack, a pressing assembly, an inclined block, a connecting ring, a handle and a protractor disc, so that the handle can be used to drive the connecting rod and the connecting ring to cooperate, the gear is controlled to rotate, the two racks are driven to move away from each other by the gear, the supporting block is driven to slide, the supporting block drives the adjusting screw and the top block to slide longitudinally again by the cooperation of the roller and the inclined block, the pressure of the top block on the cable is increased when the cable is tensioned, the cable is effectively prevented from being deformed and separated from the constraint of the top block, the stability of the cable during the test is improved, the handle can be used to accurately control the rotation of the gear when the cabinet door is opened, the flame-retardant cable can be continuously tensioned during the test, the flame-retardant limit value of the cable in the tensioned state can be conveniently obtained, and the convenience and accuracy of the flame-retardant cable combustion test are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0028] Figure 1 The state diagram before the test of the present application;

[0029] Figure 2 The state diagram when the test of the present application;

[0030] Figure 3 The first perspective view of the structure of the present application when the top block does not constrain the cable;

[0031] Figure 4 The second perspective view of the structure of the present application when the top block does not constrain the cable;

[0032] Figure 5 The first perspective view of the structure of the present application when the top block preliminarily constrains the cable;

[0033] Figure 6 The second perspective view of the structure of the present application when the top block preliminarily constrains the cable;

[0034] Figure 7 The first perspective view of the structure of the present application when the top block again applies pressure to the cable;

[0035] Figure 8 The second perspective view of the structure of the present application when the top block again applies pressure to the cable;

[0036] Figure 9 The structure schematic view of the present application before the handle is limited;

[0037] Figure 10 The structure schematic view of the present application after the handle is limited

[0038] Figure 11 The structure schematic view of the present application when the top block does not constrain the cable;

[0039] Figure 12 The structure schematic view of the present application when the top block does not constrain the cable;

[0040] Figure 13 The structure schematic view of the present application when the top block does not constrain the cable;

[0041] Figure 14 The structure schematic view of the present application when the top block does not constrain the cable.

[0042] In the figure: 1, cabinet body; 101, combustion chamber; 102, cabinet door; 2, mounting box; 201, sliding groove; 202, partition; 3, gear; 301, rotating shaft; 4, rack; 401, collar; 402, rectangular accommodating groove; 403, slot; 5, pressing assembly; 501, supporting block; 502, adjusting screw; 5021, rotating knob; 503, top block; 504, roller; 6, flame nozzle; 7, slope block; 8, connecting ring; 801, connecting rod; 802, handle; 803, plug block; 9, index plate; 901, slot. DETAILED DESCRIPTION

[0043] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0044] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0045] The additional aspects and advantages of the present application will be further described in the following description of the drawings, some of which will become apparent from the following description, or will be understood through practice of the present application.

[0046] As Figures 1-14As shown, a kind of flame-retardant cable combustion test device, it includes cabinet 1 and the combustion chamber 101 opened in cabinet 1, the bottom surface fixed mounting box 2 in combustion chamber 101 inside, cabinet 1 is hinged to the side of combustion chamber 101 and is connected with cabinet door 102, the position of cabinet 1 and mounting box 2 corresponding cabinet door 102 are all opened with sealing groove, the inside of cabinet door 102 is equipped with glass observation window, so that the test condition of cable can be directly observed by staff through observation window during test, so as to control or adjust equipment in time, and the inner wall of cabinet door 102 is fixed with sealing ring, the opening of combustion chamber 101 can be closed by sealing ring and sealing groove cooperation, so as to ensure that heat does not dissipate, the inside of mounting box 2 is rotatably connected with gear 3, the outer surface of gear 3 is symmetrically meshed with two racks 4, the cross section of rack 4 is L-shaped, the position of mounting box 2 at two racks 4 is opened with sliding slot 201, gear 3 can make two racks 4 close to each other or move away from each other, the top of two racks 4 is slidably connected with compression assembly 5, the top of mounting box 2 is equipped with flame nozzle 6, (the cabinet 1, cabinet door 102 and flame nozzle 6 in the utility model are all known technology in the technical field, so the specific structure and working principle are not described in detail)

[0047] Compression assembly 5 includes support block 501 slidably connected with rack 4, rectangular receiving groove 402 is opened in the bottom end of rack 4 at support block 501, support block 501 is matched with rectangular receiving groove 402, the top of support block 501 is threadedly connected with adjusting screw 502, the top end of adjusting screw 502 is rotatably connected with top block 503, adjusting screw 502 is fixedly connected with rotating handle 5021 on the outer surface, the position of support block 501 at adjusting screw 502 is opened with screw hole matched therewith, rotating hole is opened in the top end of adjusting screw 502 at top block 503, bearing is inlaid in rotating hole, one side of rack 4 close to top block 503 is fixedly connected with sleeve ring 401, the top of top block 503 is triangular, slot 403 is opened in the position of sleeve ring 401 at top block 503, rubber layer is fixedly arranged on the inner wall of sleeve ring 401 and the top of top block 503, two rollers 504 are rotatably connected on the position close to bottom at support block 501, inclined block 7 is fixedly connected on the position of mounting box 2 corresponding roller 504, on the one hand, rotating handle 5021 is used to rotate adjusting screw 502, then adjusting screw 502 and support block 501 are threadedly connected, so that top block 503 can slide longitudinally, so that top block 503 can be positioned with sleeve ring 401 to cable, on the other hand, when two racks 4 move away from each other, support block 501 will slide, at this time, roller 504 and inclined block 7 are used to make support block 501 drive adjusting screw 502 and top block 503 to slide longitudinally again, so that the pressure of top block 503 on cable can be increased while the cable is tensioned

[0048] The center of the gear 3 is fixedly connected with a rotating shaft 301, the mounting box 2 is fixedly provided with a partition plate 202 below the gear 3, the partition plate 202 is provided with a rotating hole at the position of the rotating shaft 301, the rotating hole is inlaid with a bearing, the outer surface of the rotating shaft 301 close to the bottom end is fixedly connected with a connecting ring 8, the outer surface of the connecting ring 8 is fixedly connected with a connecting rod 801, one end of the connecting rod 801 is slidably connected with a handle 802, one side of the mounting box 2 close to the handle 802 is fixedly connected with a protractor 9, one side of the handle 802 close to the protractor 9 is fixedly connected with an insertion block 803, the outer surface of the protractor 9 is provided with a plurality of insertion grooves 901 matched with the insertion block 803, the end of the insertion block 803 away from the handle 802 is provided with a chamfer, the outer surface of the handle 802 is fixedly provided with a rubber layer, the handle 802 can be used to cooperate with the connecting rod 801 and the connecting ring 8, the gear 3 is controlled to rotate, when the gear 3 is adjusted to a specified position, the handle 802 is pushed to make the insertion block 803 inserted into the insertion groove 901, and the handle 802, the connecting rod 801 and the connecting ring 8 are limited, so that the gear 3 is prevented from rotating at will.

[0049] The working process of the utility model is as follows:

[0050] S1, as shown in Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 14 , during the experiment, the flame-retardant cable is threaded through the two collars 401, then the adjusting screw rod 502 is rotated by using the rotating handle 5021, and under the action that the adjusting screw rod 502 is threadedly connected with the supporting block 501, the top block 503 can slide longitudinally, so that the top block 503 can be positioned with the collar 401 (as the top block 503 is located in the slot 403, so when the adjusting screw rod 502 rotates, the top block 503 will not rotate);

[0051] S2, as shown in Figure 1 , Figure 2 and Figure 3 , the cabinet door 102 is closed, and then the flame nozzle 6 is opened to carry out the combustion test;

[0052] S3, as shown in Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 14 , during the experiment, the handle 802 can be used to cooperate with the connecting rod 801 and the connecting ring 8 outside, the gear 3 is controlled to rotate, and the two racks 4 can be separated from each other by using the gear 3;

[0053] S4, as shown in Figure 7 , Figure 8 andFigure 14 As shown, when the two racks 4 move away from each other, the support block 501 will slide accordingly. At this time, by using the cooperation of the roller 504 and the ramp block 7, the support block 501 can drive the adjusting screw 502 and the top block 503 to slide longitudinally again, thereby increasing the pressure applied to the cable by the top block 503 while tightening the cable.

[0054] S5, such as Figure 9 and Figure 10 As shown, after adjusting to the designated position, the handle 802 can be pushed to insert the plug 803 into the slot 901, and then the test status of the cable can be seen intuitively through the observation window, so as to control or adjust the equipment in a timely manner.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A flame-retardant cable burn test apparatus, characterized by: The utility model provides a kind of cabinet, including cabinet (1) and the combustion chamber (101) opened on the cabinet (1), the bottom surface inside the combustion chamber (101) is fixedly installed with installation box (2), the inside rotationally connected with gear (3) of installation box (2), the outer surface of gear (3) is symmetrically engaged with two racks (4), the top of two racks (4) is slidably connected with compression assembly (5), the top of installation box (2) is installed with flame nozzle (6) in the middle place; The compression assembly (5) includes a support block (501) slidably connected to the rack (4), the top of the support block (501) is threadedly connected to an adjusting screw (502), the top end of the adjusting screw (502) is rotatably connected to a top block (503), the side of the rack (4) close to the top block (503) is fixedly connected to a sleeve ring (401), the position close to the bottom of the support block (501) is rotatably connected to two rollers (504), the position corresponding to the rollers (504) of the installation box (2) is fixedly connected to an inclined block (7). The center of the gear (3) is fixedly connected to a rotating shaft (301), the outer surface of the bottom end of the rotating shaft (301) is fixedly connected to a connecting ring (8), the outer surface of the connecting ring (8) is fixedly connected to a connecting rod (801), one end of the connecting rod (801) is slidably connected to a handle (802), the side of the installation box (2) close to the handle (802) is fixedly connected to a protractor disc (9), the side of the handle (802) close to the protractor disc (9) is fixedly connected to an insertion block (803), the outer surface of the protractor disc (9) is provided with a plurality of insertion grooves (901) matched with the insertion block (803).

2. A flame-retardant cable burn test apparatus as defined in claim 1, wherein: The cabinet (1) is hingedly connected to a cabinet door (102) on one side of the combustion chamber (101), and the cabinet (1) and the installation box (2) are provided with sealing grooves corresponding to the cabinet door (102).

3. A flame-retardant cable burn test apparatus as defined in claim 1, wherein: The cross section of the rack (4) is L-shaped, and the installation box (2) is provided with a sliding groove (201) at the position of the two racks (4).

4. A flame-retardant cable burn test apparatus as defined in claim 1, wherein: The bottom end of the rack (4) is provided with a rectangular receiving groove (402) at the position of the support block (501), and the support block (501) is matched with the rectangular receiving groove (402).

5. A flame-retardant cable burn test apparatus as defined in claim 1, wherein: The outer surface of the adjusting screw (502) is fixedly connected to a rotating knob (5021), the position of the support block (501) is provided with a threaded hole matched with the adjusting screw (502), and the top end of the adjusting screw (502) is provided with a rotating hole in the top block (503), and the rotating hole is inlaid with a bearing.

6. A flame-retardant cable burn test apparatus as defined in claim 1, wherein: The top of the top block (503) is triangular, the sleeve ring (401) is provided with a notch (403) at the position of the top block (503), and the inner wall of the sleeve ring (401) and the top of the top block (503) are both fixedly provided with a rubber layer.

7. A flame-retardant cable burn test apparatus as defined in claim 1, wherein: The installation box (2) is fixed with a partition (202) directly below the gear (3), the partition (202) is provided with a rotating hole at the position of the rotating shaft (301), and the rotating hole is inlaid with a bearing.

8. A flame-retardant cable burn test apparatus as defined in claim 1, wherein: The end, away from the handle (802), of the plug block (803) is provided with a chamfer, and the outer surface of the handle (802) is fixedly provided with a rubber layer.

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