A cable flame resistance testing device

Abstract

The present application relates to cable testing device technical field, name is a kind of cable flame resistance testing device, including device frame, vertical rod is installed in the left and right sides of device frame, there is also the fixture of cable installation on cable, when using, the cable is installed on fixture, two fixtures are burning cable area between, lifting cylinder is also installed on device frame, the lifting cylinder has burning groove on top, the burning groove has the burning groove opening on top, the burning groove opening is below between two fixtures;Nut screw motor driven nut screw is also installed on device frame, nut sleeve is also installed around nut screw, connecting rod is also installed on nut sleeve, the other end of connecting rod is also connected with cleaning sleeve, the cleaning sleeve is annular structure. It has the advantages of accurate testing, convenient to use.

Description

Technical Field

[0001] This invention relates to the field of cable testing equipment technology, and more specifically to a cable flame retardancy testing equipment. Background Technology

[0002] Flame resistance is an important indicator of cable performance. In the current technology, the flame resistance of cables is tested by placing them in a fire for a period of time, which has the disadvantages of inaccurate testing and inconvenience. In addition, in the current technology, the burning material on the outside of the cable must be manually cleaned after it is taken out of the fire in order to test or determine the burning condition, which also has the disadvantage of inconvenience. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned shortcomings by providing an accurate and convenient cable flame retardancy testing device.

[0004] The technical solution of the present invention is implemented as follows: a cable flame retardancy testing device includes a device frame, uprights installed on the left and right sides of the device frame, and cable clamps installed on the cable. In use, the cable is installed on the clamps, and the area between the two clamps is the cable combustion zone. A lifting cylinder is also installed on the device frame. The lifting cylinder has a combustion groove on its upper part, and the combustion groove has an upper combustion groove opening. The combustion groove opening is located below between the two clamps.

[0005] Furthermore, there is a cover hinged to the combustion chamber opening.

[0006] Furthermore, a lead screw driven by a lead screw motor is also installed on the device frame. The length direction of the lead screw is parallel to the length direction of the cable. A threaded sleeve is also installed around the lead screw, and a connecting rod is installed on the threaded sleeve. The other end of the connecting rod is connected to a cleaning sleeve. The cleaning sleeve has a ring structure, and there are multiple radial steel wires around the inside of the cleaning sleeve. The other end of the steel wires forms a space for passing through the cable and cleaning the area around the cable. The lead screw motor is a reciprocating motor. Under the action of the lead screw motor, the cleaning sleeve moves back and forth on the cable and can clean the outer perimeter of the cable.

[0007] Furthermore, the cleaning sleeve also includes an outer shell, inside which is a circular cavity. The cleaning sleeve is installed inside the circular cavity and can rotate within the circular cavity. A rotating motor is also installed on the outer shell, and the rotating motor is connected to the cleaning sleeve and can cause the cleaning sleeve to rotate along the cable.

[0008] Furthermore, a suction hood is also installed on the device frame, facing downwards towards the combustion cable area, and a suction pipe is connected to the suction hood, with an exhaust fan installed in the middle of the suction pipe.

[0009] The beneficial effects of this invention are that such a cable flame retardancy testing device has the advantages of accurate testing and convenient use. Attached Figure Description

[0010] Figure 1 This is a side view of the present invention.

[0011] Figure 2 yes Figure 1 A diagram of the A-A direction.

[0012] Figure 3 yes Figure 1 A schematic diagram of the B-B direction in the diagram.

[0013] Figure 4 yes Figure 1 Enlarged diagram of part C in the diagram.

[0014] Figure 5 yes Figure 4 A schematic diagram of the D-D direction in the diagram.

[0015] Figure 6 This is a schematic diagram of one state of the clamp in one embodiment.

[0016] Figure 7 This is a schematic diagram of another state of the clamp in one embodiment.

[0017] The components include: 1. Frame; 2. Pole; 3. Cable; 4. Clamp; 41. Card; 42. Lock; 43. Lock lug; 44. Card hinge; 5. Lifting cylinder; 6. Combustion tank; 61. Combustion tank opening; 62. Cover; 63. Hinge; 71. Lead screw motor; 72. Lead screw; 73. Lead screw sleeve; 74. Connecting rod; 81. Cleaning sleeve; 811. Cleaning sleeve gear ring; 82. Steel wire; 83. Outer shell; 84. Rotary motor; 841. Rotary motor gear; 91. Suction hood; 92. Suction pipe; 93. Exhaust fan. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments.

[0019] As shown in the figure, a cable flame retardancy testing device includes a device frame 1, uprights 2 installed on the left and right sides of the device frame, and cable clamps 4 installed on the cable 3. In use, the cable is installed on the clamps, and the area between the two clamps is the cable combustion zone. A lifting cylinder 5 is also installed on the device frame. The lifting cylinder has a combustion groove 6 on its top, and the combustion groove has an upper combustion groove opening 61. The combustion groove opening is located below between the two clamps.

[0020] When using this invention, both ends of the cable are clamped onto the clamps, and a fuel, such as kerosene, is placed in the combustion chamber. The height of the combustion chamber can be adjusted by the lifting cylinder. The fuel generates a flame that acts on the cable. After a period of time, the burning condition of the cable can be observed or tested to determine the cable's flame resistance, thus achieving the purpose of this invention.

[0021] When testing the same batch of cables, the same fuel, such as 100 ml of kerosene, is placed in the combustion chamber and the chamber is made to the same height, so that the cable with better flame resistance can be compared.

[0022] The lifting cylinder is a lifting component, which is a component in the prior art. In short, it is sufficient as long as it can make the combustion chamber rise and fall.

[0023] The aforementioned clamp is also a component in existing technology; it only needs to be able to secure the cable, for example... Figure 6 , 7 The diagram shows a type of clamp, which consists of two semi-circular cards 41 hinged together. 44 in the diagram is the hinge shaft that connects the two cards. At the other end of the semi-circular cards are a latch 42 and a locking lug 43, which can be used to fix the cable. There are many clamps for fixing cables in the prior art.

[0024] Furthermore, there is a cover 62 hinged to the combustion chamber opening, and 63 in the figure is the hinge pin.

[0025] The present invention is configured such that when no testing is required, the cover can be placed over the combustion chamber opening.

[0026] Furthermore, a lead screw 72 driven by a lead screw motor 71 is also installed on the device frame. The length direction of the lead screw is parallel to the length direction of the cable. A threaded sleeve 73 is also installed around the lead screw, and a connecting rod 74 is also installed on the threaded sleeve. The other end of the connecting rod is connected to a cleaning sleeve 81. The cleaning sleeve has a ring structure, and there are multiple radial steel wires 82 around the inside of the cleaning sleeve. The other end of the steel wires forms a space for passing through the cable and cleaning the area around the cable. The lead screw motor is a reciprocating motor. Under the action of the lead screw motor, the cleaning sleeve moves back and forth on the cable and can clean the outer periphery of the cable.

[0027] This invention also allows for the cleaning of cables by inserting steel wires along the length of the cable and cleaning it from left to right. The cleaning process involves removing the burning sheath from the cable.

[0028] Furthermore, the cleaning sleeve also includes an outer shell 83, inside which is a circular cavity. The cleaning sleeve is installed inside the circular cavity and can rotate within the circular cavity. A rotating motor 84 is also installed on the outer shell, which is connected to the cleaning sleeve and can cause the cleaning sleeve to rotate along the cable.

[0029] This invention also allows for the cleaning of cables. In this case, the cleaning sleeve is wrapped around the cable to clean it, which has the advantage of better removing the burning sheath from the cable, so as to more accurately determine the cable's flame resistance.

[0030] The aforementioned rotating motor is connected to the cleaning sleeve and allows the cleaning sleeve to rotate along the cable. For example, as... Figure 5 As shown, the rotating motor has a rotating motor gear 841, and the cleaning sleeve has a cleaning sleeve gear ring 811. A cable is inserted in the middle of the cleaning sleeve gear ring. The rotating motor gear and the cleaning sleeve gear ring mesh, so that the rotating motor is connected to the cleaning sleeve and the cleaning sleeve can rotate along the cable. When the lead screw motor is turned on at the same time, it is possible to achieve cleaning while rotating, and the cleaning sleeve can move left and right at the same time, so as to obtain a better cleaning effect.

[0031] Furthermore, a suction hood 91 is also installed on the device frame, with the suction hood facing downwards towards the combustion cable area, and a suction pipe 92 is connected to the suction hood, with an exhaust fan 93 installed in the middle of the suction pipe.

[0032] This invention also allows for the timely removal of harmful gases produced during combustion.

[0033] To elaborate further, such as Figure 1 As shown, the cleaning sleeve is a conductor and electrically connected to a steel wire. The cleaning sleeve is electrically connected to an indicator light 13 via a first wire 11. The indicator light is connected to one pole of a power supply 13, and the other pole of the power supply is connected to a second wire 14.

[0034] With the above-mentioned configuration of the present invention, when cleaning the cable, the second conductor is connected to the conductor inside the cable. If the cable sheath is completely burned, after the cable sheath is completely cleaned, the steel wire will contact the conductor inside the cable to form a circuit, and the indicator light will be bright, which will facilitate the inspection personnel to make a judgment and take certain measures.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A cable flame resistance testing apparatus characterized by: The device includes a frame with uprights on both sides and cable clamps mounted on the cable. In use, the cable is mounted on the clamps, and the area between the two clamps is the cable combustion zone. A lifting cylinder is also mounted on the frame, and the lifting cylinder has a combustion groove with an upper combustion groove opening located below between the two clamps.

2. The cable burn resistance testing apparatus of claim 1, wherein: A lead screw driven by a lead screw motor is also installed on the device frame. The length direction of the lead screw is parallel to the length direction of the cable. A threaded sleeve is also installed around the lead screw, and a connecting rod is installed on the threaded sleeve. The other end of the connecting rod is connected to a cleaning sleeve. The cleaning sleeve has a ring structure, and there are multiple radial steel wires around the inside of the cleaning sleeve. The other end of the steel wires forms a space for passing through the cable and cleaning the area around the cable. The lead screw motor is a reciprocating motor. Under the action of the lead screw motor, the cleaning sleeve moves back and forth on the cable and can clean the outer perimeter of the cable.

Images