A high temperature resistant testing device for halogen-free low smoke high flame retardant cable

Abstract

The application relates to the technical field of high-temperature-resistant testing devices, in particular to a high-temperature-resistant testing device for a halogen-free low-smoke high-flame-retardant cable, which comprises a high-temperature testing box and an electric telescopic rod. A sealing box door is hinged to the box opening of the high-temperature testing box. A cable inlet hole is formed in the side wall of the high-temperature testing box, and a cable outlet hole is formed in the other side wall of the high-temperature testing box. The center line of the cable outlet hole and the center line of the cable inlet hole are on the same straight line. When the cable is pushed, the cable is inserted into the cable inlet hole, so that the end part of the cable is in the high-temperature testing box. Then, the electric telescopic rod is started to drive the cable pushing block to move, the driving total plate is driven to move upwards under the action of the trapezoidal beam, and the two clamping sleeves are driven to move close to each other to clamp the cable. Then, the cable can be pulled to the cable outlet hole, and the cable is inserted into the cable outlet hole, so that the cable can be quickly passed through, which is very convenient and fast.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high temperature resistance testing device, in particular to a high temperature resistance testing device for halogen-free low-smoke high-retardant cable. BACKGROUND

[0002] The base resin of the low-smoke halogen-free retardant cable material is selected from polyolefins without halogen, which decomposes water and carbon dioxide when burning, without generating obvious smoke and toxic gas. When the retardant cable is burned by flame, the flame spreading is limited within a specified range, and after the flame is removed, the residual flame and residual burning can self-extinguish within a limited time without further damaging the cable. The fire-resistant cable can maintain normal operating characteristics when burned by flame for a certain time. Compared with ordinary PVC retardant cable, the LSZH cable has the following advantages: no halogen; low smoke generation when burning; excellent retardant performance; no heavy metals such as lead, and no harm to the environment when recycled or disposed.

[0003] At present, when testing the high temperature resistance of halogen-free low-smoke high-retardant cable, in order to ensure the accuracy of the test, one end of the cable is inserted from the hole on one side of the high temperature test box and taken out from the hole on the other side, and the cable is tested in sections. When the cable is perforated, it is not easy to align with the hole when it is taken out from the other side because the cable is soft, which makes it difficult to take out and perforate, wasting a lot of time and affecting the efficiency of the high temperature resistance test. SUMMARY

[0004] The present application aims to provide a high temperature resistance testing device for halogen-free low-smoke high-retardant cable to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A high temperature resistance testing device for halogen-free low-smoke high-retardant cable, comprising a high temperature test box and an electric telescopic rod, a sealing box door is hinged to the box opening of the high temperature test box, a cable inlet hole is formed in the side wall of the high temperature test box, and a cable outlet hole is formed in the other side wall of the high temperature test box, the center line of the cable outlet hole and the center line of the cable inlet hole are on the same straight line, two trapezoidal beams are symmetrically fixed inside the high temperature test box, the trapezoidal beams are above the cable outlet hole, a matching jack is formed in the high temperature test box below the cable inlet hole, a fixed support plate is fixedly arranged on the outer end face of the high temperature test box below the matching jack, an electric telescopic rod is fixedly installed on the fixed support plate, the electric telescopic rod is inserted into the matching jack, and a cable automatic clamping, releasing and pushing mechanism is fixedly installed on the electric telescopic rod.

[0007] Preferably, the cable automatic clamping, releasing and pushing mechanism comprises a cable pushing block, a clamping sleeve, a first rotatable engaging plate, a driving main plate, a connecting spring, a second rotatable engaging plate and a movable connecting plate, the cable pushing block is fixedly installed on the electric telescopic rod and is located inside the high-temperature test box, and the cable pushing block is located on one side of the cable inlet hole before the cable is pushed.

[0008] Preferably, a top rod insertion hole is formed in the cable pushing block, vertical installation plates are symmetrically arranged at two ends of the cable pushing block, movable matching holes are formed in the vertical installation plates, a top supporting plate is fixedly arranged at an upper end of the vertical installation plate, guide supporting rods are fixedly arranged on the top supporting plate, and the trapezoidal beam is located between the two guide supporting rods.

[0009] Preferably, the clamping sleeve is two, symmetrically arranged at two ends of the cable pushing block, a top rod insertion slot is formed in a lower end of the clamping sleeve, a horizontal supporting rod is fixedly arranged at one end of the clamping sleeve, an end connecting frame is fixedly arranged at an end of the horizontal supporting rod away from the clamping sleeve, the horizontal supporting rod is inserted into the movable matching hole, a vertical connecting rod is fixedly arranged at a lower end of the end connecting frame, and a lower connecting plate is fixedly arranged at a lower end of the vertical connecting rod.

[0010] Preferably, the end connecting frame is hingedly connected with the first rotatable engaging plate, the upper end of the first rotatable engaging plate is hingedly connected with the driving main plate, guide matching holes are symmetrically formed at two ends of the driving main plate, and the guide supporting rods are inserted into the guide matching holes.

[0011] Preferably, lower bearing installation columns are symmetrically fixedly arranged at two ends of the lower end surface of the driving main plate, rotating rollers are installed at lower ends of the lower bearing installation columns, the rotating rollers are in contact with the upper end surface of the trapezoidal beam, the connecting spring is sleeved on the guide supporting rod, and the connecting spring is located on the lower side of the driving main plate.

[0012] Preferably, the second rotatable engaging plate is hingedly connected to the lower connecting plate, the other end of the second rotatable engaging plate is hingedly connected with the movable connecting plate, the height of the movable connecting plate is higher than that of the lower connecting plate, a top-tight insertion rod is fixedly arranged at the upper end of the movable connecting plate, the top-tight insertion rod is inserted into the top rod insertion hole, and a plurality of anti-slip top strips are fixedly arranged at the upper end of the top-tight insertion rod.

[0013] Compared with the prior art, the cable automatic clamping, releasing and pushing mechanism has the following advantages:

[0014] 1. When the cable is pushed, the cable is inserted from the cable inlet hole, so that the end of the cable is in the high temperature test box, and then the electric telescopic rod is started to drive the cable pushing block to move, under the action of the trapezoidal beam, the driving main plate is moved upward, and then the two clamping sleeves are closed to each other to clamp the cable, then the cable can be pulled to the cable outlet hole, and inserted into the cable outlet hole, so as to realize fast passing, which is very convenient and fast, greatly reduces the operation difficulty of the staff, improves the work efficiency of the staff, and then improves the work efficiency of the cable high temperature test.

[0015] 2. When the end of the cable is inserted into the cable outlet hole, the driving main plate moves to the inclined surface part of the trapezoidal beam, and then moves downward under the action of its own weight and the connecting spring, so that the two clamping sleeves move away from each other under the action of the first rotatable adapter plate, and the cable is released, which is convenient for pulling the cable for testing in the testing process.

[0016] 3. In addition, when the cable pushing block pushes the cable, the clamping sleeve clamps the cable, and under the action of the second rotatable adapter plate, the movable connecting plate is moved upward, and then the jacking insertion rod is moved upward and inserted into the clamping sleeve to assist the fixation of the cable, so that the clamping sleeve can stably drive the cable to move, and the phenomenon of cable falling off from the clamping sleeve does not occur. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the assembly of the high temperature test box.

[0018] Figure 2 It is a schematic view of the assembly of the high temperature test box.

[0019] Figure 3 It is a schematic view of the structure of the high temperature test box.

[0020] Figure 4 It is a schematic view of the assembly of the cable automatic clamping and releasing pushing mechanism.

[0021] Figure 5 It is a schematic view of the structure of the clamping sleeve.

[0022] Figure 6 It is a schematic view of the structure of the driving main plate.

[0023] Figure 7 It is a schematic view of the structure of the movable connecting plate.

[0024] In the figure: 1, high temperature test box; 11, cable inlet hole; 12, cable outlet hole; 13, trapezoidal beam; 14, matching jack; 15, fixed support plate; 16, electric telescopic rod; 2, sealing box door; 3, cable pushing block; 31, top rod insertion hole; 32, vertical mounting plate; 33, movable matching hole; 34, top support plate; 35, guide support rod; 4, clamping sleeve; 41, top rod insertion slot; 42, horizontal support rod; 43, end connecting frame; 44, vertical connecting rod; 45, lower connecting plate; 5, first rotatable adapter plate; 6, drive main plate; 61, guide matching hole; 62, lower bearing mounting column; 63, rotating roller; 64, connecting spring; 7, second rotatable adapter plate; 8, movable connecting plate; 81, top-tight insertion rod; 82, anti-slip top strip. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Please refer to Figures 1 to 7 The present application provides a technical solution:

[0027] A high-temperature-resistant testing device for a halogen-free, low-smoke, high-flame-retardant cable comprises a high-temperature test box 1 and an electric telescopic rod 16. A sealing box door 2 is hinged to the box opening of the high-temperature test box 1. A cable inlet hole 11 is formed in one side wall of the high-temperature test box 1, and a cable outlet hole 12 is formed in the other side wall of the high-temperature test box 1. The center line of the cable outlet hole 12 and the center line of the cable inlet hole 11 are on the same straight line. Two trapezoidal beams 13 are symmetrically fixed inside the high-temperature test box 1. The trapezoidal beams 13 are above the cable outlet hole 12, and the upper surfaces of the trapezoidal beams 13 are smooth and free of burrs. A matching jack 14 is formed in the high-temperature test box 1 below the cable inlet hole 11. A fixed support plate 15 is fixed to the outer end surface of the high-temperature test box 1 below the matching jack 14. An electric telescopic rod 16 is fixedly installed on the fixed support plate 15. The electric telescopic rod 16 is inserted into the matching jack 14, and a cable automatic clamping and releasing pushing mechanism is fixedly installed on the electric telescopic rod 16.

[0028] The cable automatic clamping and releasing pushing mechanism comprises a cable pushing block 3, a clamping sleeve 4, a first rotatable adapter plate 5, a drive main plate 6, a connecting spring 64, a second rotatable adapter plate 7, and a movable connecting plate 8. The cable pushing block 3 is fixedly installed on the electric telescopic rod 16, and is inside the high-temperature test box 1. Before the cable is pushed, the cable pushing block 3 is on one side of the cable inlet hole 11.

[0029] The cable pushing block 3 is provided with a top rod insertion hole 31, and two vertical installation plates 32 are symmetrically arranged at the two ends of the cable pushing block 3, the vertical installation plates 32 are provided with movable cooperation holes 33, and the upper ends of the vertical installation plates 32 are fixedly provided with top support plates 34, the top support plates 34 are fixedly provided with guide support rods 35, and the trapezoidal beam 13 is located between the two guide support rods 35.

[0030] The clamping sleeve 4 is provided with a top rod insertion slot 41 at the lower end, and the clamping sleeve 4 is closed together when clamping the cable, one end of the clamping sleeve 4 is fixedly provided with a horizontal support rod 42, the horizontal support rod 42 is fixedly provided with an end connecting frame 43 away from one end of the clamping sleeve 4, and the horizontal support rod 42 is inserted into the movable cooperation hole 33, the diameter of the horizontal support rod 42 is equal to the diameter of the movable cooperation hole 33, the lower end of the end connecting frame 43 is fixedly provided with a vertical connecting rod 44, and the lower end of the vertical connecting rod 44 is fixedly provided with a lower connecting plate 45.

[0031] The end connecting frame 43 is hingedly connected with a first rotatable adapter plate 5, the upper end of the first rotatable adapter plate 5 is hingedly connected with a driving main plate 6, the two ends of the driving main plate 6 are symmetrically provided with guide cooperation holes 61, the guide cooperation holes 61 are inserted with the guide support rods 35, and the diameter of the guide cooperation holes 61 is equal to the diameter of the guide support rods 35.

[0032] The lower end of the driving main plate 6 is fixedly provided with a lower bearing installation column 62, the lower end of the lower bearing installation column 62 is provided with a rotating roller 63, the rotating roller 63 is in contact with the upper end surface of the trapezoidal beam 13, the guide support rod 35 is sleeved with a connecting spring 64, the connecting spring 64 is located on the lower side of the driving main plate 6, and the two ends of the connecting spring 64 are respectively welded on the top support plate 34 and the lower end surface of the driving main plate 6.

[0033] The lower connecting plate 45 is hingedly connected with a second rotatable adapter plate 7, the other end of the second rotatable adapter plate 7 is hingedly connected with a movable connecting plate 8, the height of the movable connecting plate 8 is higher than that of the lower connecting plate 45, and the upper end of the movable connecting plate 8 is fixedly provided with a top-tight insertion rod 81 at the middle position, the top-tight insertion rod 81 is inserted into the top rod insertion hole 31, and the upper end of the top-tight insertion rod 81 is fixedly provided with a plurality of anti-slip top strips 82, the number of the anti-slip top strips 82 can be set according to actual use requirements.

[0034] When the high temperature resistance test of the cable is carried out, one end of the cable is inserted from the cable inlet hole 11, only a small section is inserted, then the electric telescopic rod 16 drives the cable pushing block 3 to move to the direction of the cable outlet hole 12, so that in the process of moving, under the action of the inclined surface on the ladder beam 13 close to the cable inlet hole 11, the driving general board 6 is driven to move upwards, so that the upper end of the first rotatable connecting plate 5 is driven to move upwards, and then the two clamping sleeves 4 are driven to move towards each other and close together to clamp the cable, and with the movement of the clamping sleeve 4, the end connecting frame 43 is driven to move close to the vertical mounting plate 32, and then the second rotatable connecting plate 7 and the movable connecting plate 8 are driven to move upwards, and then the movable connecting plate 8 is driven to move upwards under the action of the second rotatable connecting plate 7, so that the jacking plug-in rod 81 is driven to move upwards and pass through the top rod insertion slot 41 and is inserted between the two clamping sleeves 4 to assist in jacking and fixing the cable, so that the cable pushing block 3 can stably move with the cable during movement, and the phenomenon that the clamping sleeve 4 and the cable are separated is avoided, so that the end of the cable can pass through the cable outlet hole 12 with the movement of the cable pushing block 3, and when the cable pushing block 3 reaches one side of the cable outlet hole 12, the driving general board 6 moves downwards under the action of the connecting spring 64 and its own gravity, so that the clamping sleeve 4 is driven to move away from each other, and with the movement of the clamping sleeve 4, the movable connecting plate 8 is driven to move downwards, and then the cable is released, so that when the high temperature resistance test of the cable is carried out, the cable can be pulled from the cable outlet hole 12 to realize the test of one section of the cable at a time, which is very convenient and can realize the rapid passing of the cable.

[0035] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistance testing device for halogen-free low smoke high flame retardant cable, comprising a high temperature testing box (1) and an electric telescopic rod (16), a sealing box door (2) is hinged at the box opening of the high temperature testing box (1), characterized in that: The high temperature test box (1) is provided with a cable inlet hole (11) on one side wall, and a cable outlet hole (12) is provided on the other side wall of the high temperature test box (1), the center line of the cable outlet hole (12) and the center line of the cable inlet hole (11) are on the same straight line, two trapezoidal beams (13) are symmetrically arranged in the high temperature test box (1), the trapezoidal beams (13) are located on the upper side of the cable outlet hole (12), a matching jack (14) is arranged on the lower side of the cable inlet hole (11) of the high temperature test box (1), a fixed support plate (15) is fixedly arranged on the outer end surface of the high temperature test box (1) below the matching jack (14), an electric telescopic rod (16) is fixedly installed on the fixed support plate (15), the electric telescopic rod (16) is inserted into the matching jack (14), and a cable automatic clamping, releasing and pushing mechanism is fixedly installed on the electric telescopic rod (16), the cable automatic clamping, releasing and pushing mechanism comprises a cable pushing block (3), a clamping sleeve (4), a first rotatable connecting plate (5), a driving main plate (6), a connecting spring (64), a second rotatable connecting plate (7) and a movable connecting plate (8), the cable pushing block (3) is fixedly installed on the electric telescopic rod (16), and the cable pushing block (3) is located in the high temperature test box (1), before the cable pushing block (3) is pushed, the cable pushing block (3) is located on one side of the cable inlet hole (11), a top rod insertion hole (31) is formed in the cable pushing block (3), and vertical mounting plates (32) are symmetrically arranged at the two ends of the cable pushing block (3), movable matching holes (33) are formed in the vertical mounting plates (32), and top support plates (34) are fixedly arranged at the upper ends of the vertical mounting plates (32), guide support rods (35) are fixedly arranged on the top support plates (34), the clamping sleeves (4) are two and are symmetrically arranged at the two ends of the cable pushing block (3), top rod insertion grooves (41) are formed in the lower ends of the clamping sleeves (4), horizontal support rods (42) are fixedly arranged at one end of the clamping sleeves (4), end connecting frames (43) are fixedly arranged at the ends of the horizontal support rods (42) away from the clamping sleeves (4), the horizontal support rods (42) are inserted into the movable matching holes (33), vertical connecting rods (44) are fixedly arranged at the lower ends of the end connecting frames (43), lower connecting plates (45) are fixedly arranged at the lower ends of the vertical connecting rods (44), the first rotatable connecting plates (5) are hingedly connected to the end connecting frames (43), the driving main plates (6) are hingedly connected to the upper ends of the first rotatable connecting plates (5), the second rotatable connecting plates (7) are hingedly connected to the lower connecting plates (45), the other ends of the second rotatable connecting plates (7) are hingedly connected to the movable connecting plates (8), the heights of the movable connecting plates (8) are higher than the heights of the lower connecting plates (45), top-tight insertion rods (81) are fixedly arranged at the upper ends of the movable connecting plates (8), and the top-tight insertion rods (81) are inserted into the top rod insertion holes (31).The upper end of the top insertion rod (81) is fixedly provided with a plurality of anti-skid top strips (82).

2. The high temperature resistant testing device of halogen-free low smoke and high flame retardant cable according to claim 1, characterized in that: The trapezoidal table beam (13) is between two guide support rods (35).

3. The high temperature resistant testing device of halogen-free low smoke and high flame retardant cable according to claim 2, characterized in that: Symmetrically, guide matching holes (61) are arranged at both ends of the driving main plate (6), and guide support rods (35) are inserted into the guide matching holes (61).

4. The high temperature resistant testing device of halogen-free low smoke and high flame retardant cable according to claim 3, characterized in that: Symmetrically, lower bearing mounting columns (62) are arranged at both ends of the lower end surface of the driving main plate (6), rotating rollers (63) are mounted at the lower ends of the lower bearing mounting columns (62), the rotating rollers (63) are in contact with the upper end surface of the trapezoidal table beam (13), connecting springs (64) are sleeved on the guide support rods (35), and the connecting springs (64) are located at the lower side of the driving main plate (6).

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