Device for testing flame retardant property of halogen-free low-smoke flame-retardant electric wire

Abstract

The utility model relates to the field of wire flame-retardant performance testing, in particular to halogen-free low-smoke flame-retardant wire flame-retardant performance testing equipment. The utility model provides halogen-free low-smoke flame-retardant wire flame-retardant performance testing equipment, which comprises a base, sliding seats, mounting plates, a supporting seat and the like, the sliding seats are symmetrically and slidably connected to the left side and the right side of the base, the mounting plates are connected to the two sliding seats, and the supporting seat is connected to the upper middle part of the base. Through the arrangement of the four limiting plates, the two ends of a wire sample are fixed among the four limiting plates respectively, it is ensured that the wire sample does not displace or loosen in the testing process, the consistency and reliability of testing are ensured, then through the cooperative use of the screws and the bidirectional motor, the bidirectional motor drives the two screws to rotate, and therefore the wire sample can be conveniently tested. The two screw rods drive the sliding seats on the screw rods and all parts on the screw rods to move, so that the wire sample is gradually straightened, the operation efficiency is improved, personal errors are reduced, and the initial conditions of each test are ensured to be consistent.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric wire flame retardant performance test, especially to a halogen-free low smoke retardant electric wire flame retardant performance test equipment. BACKGROUND

[0002] The halogen-free low smoke retardant electric wire flame retardant performance test equipment is a device specially used for evaluating and testing the safety performance of electric wire cables under fire conditions.

[0003] In the existing electric wire flame retardant performance test equipment, if the electric wire sample is bent, the area and position of the flame contacting the surface of the electric wire sample will change, resulting in uneven heating in some areas, which will affect the accuracy of the test results, and some areas may be burned off prematurely or fail to burn fully. In addition, the electric wire sample in the bent state will produce local stress concentration, especially at the bending point, which may cause changes in the mechanical properties of the electric wire sample material, thereby affecting the performance of its flame retardant properties and reducing the reliability of the test results.

[0004] In view of the above problems, a halogen-free low smoke retardant electric wire flame retardant performance test equipment is needed to straighten the electric wire sample before testing. SUMMARY

[0005] In order to overcome the problem that if the electric wire sample is bent, the area and position of the flame contacting the surface of the electric wire sample will change, resulting in uneven heating in some areas, the utility model provides a halogen-free low smoke retardant electric wire flame retardant performance test equipment.

[0006] The technical scheme of the utility model is as follows: a halogen-free low smoke retardant electric wire flame retardant performance test equipment, comprising a base, a sliding seat, an installation plate, a support seat, a fire pot and a straightening assembly, the base is symmetrically connected with the sliding seat on the left and right, the two sliding seats are connected with the installation plate, the base is connected with the support seat in the middle, the fire pot is placed on the upper side of the support seat, and the straightening assembly is arranged inside the two sliding seats on the base.

[0007] Further, the straightening assembly comprises a guide rod, a sliding block, a limiting plate, an elastic piece, a screw rod, a bidirectional motor and a support block, the guide rod is connected inside the two sliding seats, the sliding block is slidably connected to the two guide rods, the limiting plate is connected to each sliding block, the elastic piece is connected between each sliding block and the inner wall of the sliding seat, the support block is connected to the middle of the base, the bidirectional motor is installed in the middle of the support block, the screw rod is connected to the output shaft of the bidirectional motor, and the two screw rods are threadedly connected with the corresponding sliding seats.

[0008] Further, the fire basin is provided with two guide rods, two sealing plates, a support plate, a rotating shaft, a gear, a motor and two rack frames, the left and right sides of the fire basin are symmetrically connected with the two guide rods, the two guide rods are slidably connected with the two sealing plates, the support seat is internally connected with the support plate, the support plate is rotationally connected with the rotating shaft at the middle portion, the rotating shaft is connected with the gear at the upper end, the support plate is installed with the motor at the lower side, the output shaft of the motor is fixedly connected with the lower end of the rotating shaft, the lower sides of the two sealing plates are connected with the two rack frames, and the two rack frames are engaged with the gear.

[0009] Further, the soft pad is connected with the inner side of each limiting plate.

[0010] Further, a plurality of mounting holes are formed in the base.

[0011] Further, the protective shell is connected with the lower side of the support plate and located at the outer side of the motor.

[0012] The utility model discloses the beneficial effects: through the setting of four limiting plates, makes the both ends of electric wire sample fixed between four limiting plates respectively, ensures that it does not displace or slacken in the testing process, guarantees the consistency and reliability of testing, and gradually straightens the electric wire sample through the cooperation of screw rod and bidirectional motor, and bidirectional motor drives two screw rods to rotate, and makes two screw rods drive the sliding seat and all components thereon to move, thereby. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0014] Figure 2 It is the three-dimensional structure schematic diagram of sliding seat, mounting plate and support seat and other parts of the utility model.

[0015] Figure 3 It is the three-dimensional structure schematic diagram of guide rod, sliding block and limiting plate and other parts of the utility model.

[0016] Figure 4 It is the three-dimensional structure schematic diagram of limiting plate, soft pad and elastic member and other parts of the utility model.

[0017] Figure 5 It is the three-dimensional structure schematic diagram of guide rod, sealing plate and support plate and other parts of the utility model.

[0018] Figure 6 It is the three-dimensional structure schematic diagram of rotating shaft, gear and motor and other parts of the utility model.

[0019] : 1_base, 2_sliding seat, 3_mounting plate, 4_support seat, 5_fire basin, 6_guide rod, 7_sliding block, 8_limiting plate, 81_cushion, 9_elastic piece, 10_screw rod, 11_bidirectional motor, 111_support block, 12_guide rod, 13_sealing plate, 14_support plate, 15_pivot, 16_gear, 17_motor, 171_protection shell, 18_rack frame. DETAILED DESCRIPTION

[0020] The utility model is further explained below in combination with the drawings and examples.

[0021] Example: a kind of halogen-free low smoke flame-retardant wire flame-retardant property testing equipment, such as Figures 1-6As shown, including base 1, sliding seat 2, mounting plate 3, support seat 4, fire basin 5, guide rod 12, sealing plate 13, support plate 14, shaft 15, gear 16, motor 17, protective shell 171, rack 18 and straightening assembly, a plurality of mounting holes are formed on the base 1, the left and right symmetrical sliding connection is provided on the base 1 The sliding seat 2, two sliding seats 2 are connected with the mounting plate 3, the middle of the base 1 is connected with the support seat 4, the support seat 4 can provide a stable support platform for the fire basin 5, the fire basin 5 is placed on the upper side of the support seat 4, the fire basin 5 is used to accommodate the burning material, the left and right symmetrical connection is provided on the outer side of the fire basin 5 The guide rod 12 provides a sliding track for the sealing plate 13, two sealing plates 13 are slidably connected between the two guide rods 12, the sealing plate 13 can prevent the flame and smoke from spreading, the support plate 14 is connected inside the support seat 4, the support plate 14 is rotatably connected with the shaft 15, the shaft 15 is connected with the gear 16, the motor 17 is installed on the lower side of the support plate 14, the output shaft of the motor 17 is fixedly connected with the lower end of the shaft 15, the protective shell 171 is provided on the lower side of the support plate 14, the protective shell 171 is located on the outer side of the motor 17, the protective shell 171 can protect the motor 17, the lower side of the two sealing plates 13 is connected with the rack 18, the two racks 18 are engaged with the gear 16, the straightening assembly is provided on the base 1 and the inside of the two sliding seats 2, the straightening assembly includes guide rod 6, sliding block 7, limiting plate 8, soft pad 81, elastic element 9, screw 10, bidirectional motor 11 and support block 111, two guide rods 6 are connected inside the two sliding seats 2, the guide rod 6 provides a sliding track for the sliding block 7, the sliding block 7 is slidably connected on the two guide rods 6, the sliding block 7 can adjust the position of the limiting plate 8, each sliding block 7 is connected with a limiting plate 8, the limiting plate 8 is used to fix the wire sample, the inner side surface of each limiting plate 8 is connected with a soft pad 81, the soft pad 81 can prevent the surface of the wire sample from being damaged, the elastic element 9 is connected between each sliding block 7 and the inner wall of the sliding seat 2, the support block 111 is connected on the middle of the base 1, the support block 111 provides an installation basis for the bidirectional motor 11, the bidirectional motor 11 is installed in the middle of the support block 111, the output shafts at both ends of the bidirectional motor 11 are connected with the screw 10, and the two screws 10 are screwed with the corresponding sliding seat 2.

[0022] When the device needs to be used to test the flame retardant performance of the electric wire, the staff first wears appropriate protective equipment, such as fireproof clothes, goggles and gloves, to ensure the safety of operation, and after wearing the protective equipment, the staff cuts the electric wire sample to be tested into a specified length according to the standard requirements, then the staff places one end of the electric wire sample between the two limiting plates 8 on the right side, and pulls the electric wire sample along the two limiting plates 8 on the right side to move downward, in the process, the electric wire sample exerts pressure on the two limiting plates 8 on the right side, so as to drive the two limiting plates 7 connected with the two limiting plates 8 on the right side to move outward along the guide rod 6 on the right side, and the two elastic members 9 on the right side are compressed, when the electric wire sample moves to the appropriate position, the electric wire sample is released, then the above steps are repeated, so that the other end of the electric wire sample is fixed between the two limiting plates 8 on the left side, then the staff places the wood prepared in advance in the fire pan 5, and uses the ignition tool to ignite the wood, ensures that the flame burns stably, then the staff starts the bidirectional motor 11, the output shafts at both ends of the bidirectional motor 11 drive the two screw rods 10 to rotate, the two screw rods 10 drive the sliding seats 2 thereon to move outward respectively, the sliding seats 2 move to drive all the components thereon to move outward, gradually straightening the electric wire sample, when the electric wire sample is completely straightened, the bidirectional motor 11 is turned off, at this time, the flame starts to burn the electric wire sample, during the flame burning process, if the electric wire sample is burned off, it is recorded as unqualified for flame retardant performance, if the electric wire sample is not burned off, it is recorded as qualified for flame retardant performance, when the electric wire sample flame retardant performance test is completed, the staff starts the motor 17, the output shaft of the motor 17 drives the rotating shaft 15 to rotate, the rotating shaft 15 drives the gear 16 to rotate, the gear 16 drives the two rack frames 18 to move inward along the corresponding guide rods 12, the movement of the two rack frames 18 drives the sealing plates 13 connected thereto to move inward, until the two sealing plates 13 move to the appropriate position and are in the closed state, finally, the staff turns off the motor 17, completes the whole test process.

[0023] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flame retardant performance testing device for halogen-free, low-smoke, flame-retardant wires, characterized in that, The base (1), the sliding seat (2), the mounting plate (3), the support seat (4), the fire basin (5) and the straightening assembly are arranged, the left and right symmetrical sliding connection of the base (1) has the sliding seat (2), the mounting plate (3) is installed on two sliding seats (2), the middle fixed connection of the base (1) has the support seat (4), the upside of the support seat (4) is placed with the fire basin (5), and the inside of the base (1) is provided with the straightening assembly with two sliding seats (2); The straightening assembly includes guide rods (6), sliding blocks (7), limit plates (8), elastic members (9), screw rods (10), bidirectional motors (11) and support blocks (111), the inside of two sliding seats (2) is fixedly connected with the guide rod (6), the sliding block (7) is slidably connected on the two guide rods (6), each sliding block (7) is fixedly connected with a limit plate (8), and the elastic member (9) is arranged between each sliding block (7) and the inner wall of the sliding seat (2), the middle of the base (1) is fixedly connected with the support block (111), the bidirectional motor (11) is installed in the middle of the support block (111), the screw rod (10) is connected to the output shaft of the bidirectional motor (11), and the two screw rods (10) are in threaded connection with the corresponding sliding seat (2).

2. A halogen-free, low smoke, flame-retardant electrical wire flame-retardant property testing apparatus according to claim 1, wherein It also includes guide rods (12), sealing plates (13), support plates (14), shafts (15), gears (16), motors (17) and rack frames (18), the left and right symmetrical fixed connection of the outside of the fire basin (5) has the guide rod (12), two sealing plates (13) are slidably connected between the two guide rods (12), the inside of the support seat (4) is fixedly connected with the support plate (14), the middle of the support plate (14) is rotatably connected with the shaft (15), the gear (16) is arranged on the upper end of the shaft (15), the motor (17) is installed on the lower side of the support plate (14), the output shaft of the motor (17) is fixedly connected with the lower end of the shaft (15), the lower side of each sealing plate (13) is fixedly connected with the rack frame (18), and the two rack frames (18) are engaged with the gear (16).

3. A halogen-free, low smoke, flame-retardant electrical wire flame-retardant property testing apparatus according to claim 2, wherein It also includes soft pads (81), and each limit plate (8) is connected with a soft pad (81) on the inner side.

4. The flame retardant performance testing equipment for halogen-free low-smoke flame-retardant wires as described in claim 3, characterized in that, A plurality of mounting holes are formed in the base (1).

5. A halogen-free, low smoke, flame-retardant electrical wire flame-retardant property testing apparatus according to claim 4, wherein It also includes a protective shell (171), the lower side of the support plate (14) is connected with the protective shell (171), and the protective shell (171) is located on the outside of the motor (17).

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