Bus duct drop hammer type mechanical collision test device

Abstract

The utility model discloses a bus duct drop hammer type mechanical collision test device. The device comprises a frame, a movable support and an impact element, the frame is of an n-shaped structure formed by channel steel and comprises a cross beam and two supporting legs, kidney-shaped holes are formed in the supporting legs, and universal wheels are installed at the bottoms of the supporting legs. Screw holes are formed in the two sides of the movable support, and the screw holes are matched with the kidney-shaped holes to adjust and fix the height of the movable support. A power module and a switch are arranged on the frame. An electromagnet is arranged in the middle of the movable support and connected into a control circuit formed by the power module and the switch, and the impact element can be attracted and released under the control of the electromagnet. And a square steel plate is welded on the outer side of the bottom of the guide pipe, so that an impact point can be conveniently positioned. The device has the advantages that an open structure is adopted, the test height is adjustable, the universal wheels at the bottom of the frame facilitate the movement of the test device, the device is suitable for bus duct samples of various sizes from light to heavy, the release track of the impact element is fixed, and the operation is safe.

Description

Technical Field

[0001] The utility model relates to a test device for power transmission and distribution equipment, in particular to a drop hammer type mechanical collision test device applicable to a busbar trunking system (busway). Background Art

[0002] A busway is an enclosed metal device composed of copper or aluminum busbars. It is a power transmission and distribution equipment for collecting and distributing electric energy, used to directly transmit electricity instead of cables. Its main body consists of conductors, joints, insulating materials, enclosures, plug-in boxes, and brackets, and is mainly used for power transmission in modern high-rise buildings and large workshops. This product will be subject to mechanical collisions during transportation, loading and unloading, installation, and use. The energy of mechanical collisions during the process is complex and variable, and its enclosure can effectively protect the interior from the impact of external mechanical collisions. The mechanical collision test targets the structural strength of the product itself, and impacts on the weak parts of the product structure and various exposed surfaces of the product at different energy levels. The national standard GB / T 20138-2023 specifically grades the mechanical collision protection of the enclosures of electrical equipment with a rated voltage not exceeding 72.5 kV, and divides them into IK codes of IK01 - IK11 levels according to the size of the collision energy.

[0003] In current test devices, the pendulum hammer type is mainly for medium and large floor-standing switchgear and control equipment, and the spring hammer type is mainly for equipment with relatively small collision energy, generally not exceeding 2 J. For equipment such as busways with a relatively low height and narrow width, the above methods are not particularly suitable. Therefore, there is a need for a mechanical collision test device that is applicable to busway products and is safe and convenient. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a drop hammer type mechanical collision test device for busways with convenient installation of impact elements, fixed release trajectories, safe operation, and applicable to busway products.

[0005] To solve the above technical problem, the busway drop hammer type mechanical collision test device of the utility model includes a frame, a movable support, and an impact element. The frame is a U-shaped structure composed of channel steel, including a cross beam and two legs. Waist-shaped holes are opened on the legs. The two sides of the movable support are provided with screw holes, and the screw holes cooperate with the waist-shaped holes to realize the adjustment and fixation of the height of the movable support. A power supply module and a switch are arranged on the frame. An electromagnet is arranged in the middle of the movable support. The electromagnet is connected to the control circuit formed by the power supply module and the switch, and under its action, the impact element can be adsorbed or released. A guide tube is arranged directly below the impact element, and universal wheels are installed at the bottom of the frame.

[0006] The power supply module is an AC-DC power supply module, with an AC input of 230V and a DC output of 24V.

[0007] The electromagnetic iron power supply voltage is 24V DC, and the suction range is 0-20 kg.

[0008] The diameter of the guiding tube is slightly larger than that of the impact element, and the height is the drop height required by the test. A square steel plate is welded to the outside of the bottom.

[0009] At the welding joint of the cross beam and the leg of the frame, a triangular steel plate for reinforcement is attached.

[0010] At the bottom of the leg of the frame, a chassis is welded, and a triangular steel plate for reinforcement is attached to the welding joint. The universal wheels are installed on the chassis.

[0011] The advantages of the present utility model are as follows: an open structure is adopted, the test height is adjustable, the universal wheels at the bottom of the frame facilitate the movement of the test device, and it is applicable to busbar samples of various sizes from light to heavy. At the same time, under the action of the guiding tube, the release trajectory of the impact element is fixed and the operation is safe. Description of the Drawings

[0012] Figure 1 It is a usage state diagram of the present utility model. Detailed Embodiment

[0013] The busbar drop hammer type mechanical collision test device of the present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0014] As Figure 1As shown in the figure, the drop hammer type mechanical collision test device for bus ducts of the present utility model includes a frame 1, a movable support 2 and an impact element 3. The frame 1 is a portal structure composed of channel steels, including a cross beam and two legs. Waist-shaped holes are opened on the legs. Universal wheels 8 are installed at the bottom of the frame 1, which facilitates the movement of the test device. For the collision test of heavy bus ducts, the test can be completed without moving the bus duct sample, ensuring the convenience and safety of the collision test. Triangular steel plates are attached to the welded corners for reinforcement. The two sides of the movable support 2 are provided with screw holes, and the screw holes cooperate with the waist-shaped holes to realize the adjustment and fixation of the height of the movable support 2. A power supply module 4 is arranged on the frame 1, which is an AC-DC power supply module. The input is AC 230V and the output is DC 24V. A switch 5 is also arranged on the frame 1. An electromagnet 6 is arranged in the middle of the movable support, and its power supply voltage is DC 24V. The suction range is 0-20 kg. It is connected to the control circuit formed by the power supply module 4 and the switch 5, and under its action, the impact element 3 can be adsorbed or released. The impact element 3 has the dimensions required by the national standard GB / T 2423.55-2006. Different impact elements correspond to different collision energies. A guide tube 7 is arranged directly below it. The diameter of the guide tube 7 is slightly larger than that of the impact element 3, and the height is the required drop height for the test. A square steel plate is welded on the outer side of its bottom, which is convenient for positioning the impact point and has the functions of preventing the impact element from hitting the sample again and preventing the impact element from bouncing and injuring the test personnel.

[0015] During use, move the bus duct sample to the lower part of this device, or move this device above the bus duct sample that is not convenient to move. After adjusting the movable support 2 to the required test height and fixing it, close the switch 5. At this time, the electromagnet 6 is powered on to generate magnetic force, and the required impact element 3 selected is adsorbed. Then place the guide tube 7 corresponding to the test height on the upper surface of the bus duct and align it with the impact element 3. Open the switch 5. At this time, the electromagnet 6 loses power and loses magnetic force, and the impact element 3 falls, completing a single test step. Then repeat the steps according to the test requirements.

[0016] Certainly, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the essence of the present utility model should also belong to the protection scope of the present utility model.

Claims

1. A bus duct drop hammer mechanical impact test device, characterized in that: The invention comprises a frame (1), a movable bracket (2) and an impact element (3). The frame (1) is a door-shaped structure made of channel steel, comprising a crossbeam and two legs, each leg having a waist-shaped hole. Screw holes are formed on both sides of the movable bracket (2), and the screw holes cooperate with the waist-shaped holes to adjust and fix the height of the movable bracket (2). The frame (1) is provided with a power module (4) and a switch (5). An electromagnet (6) is provided in the middle of the movable bracket (2). The electromagnet (6) is connected to a control circuit formed by the power module (4) and the switch (5), and can adsorb or release the impact element (3) under the action of the electromagnet. A guide tube (7) is provided directly below the impact element (3). A universal wheel (8) is provided at the bottom of the frame (1).

2. The bus duct drop hammer mechanical impact test device according to claim 1 is characterized in that: The power supply module (4) is an AC to DC power supply module, the input is AC 230V and the output is DC 24V.

3. The bus duct drop hammer mechanical impact test device according to claim 2 is characterized in that: The power supply voltage of the electromagnet (6) is DC 24V, and the suction force range is 0-20kg.

4. The bus duct drop hammer mechanical impact test device according to claim 3 is characterized in that: The guide tube (7) has a diameter slightly larger than the impact element (3), a height that is the drop height required by the test, and a square steel plate is welded to the outer side of the bottom.

5. The bus duct drop hammer mechanical impact test device according to any one of claims 1 to 4, characterized in that: A triangular steel plate for reinforcement is attached to the welding point between the cross beam and the supporting legs of the frame (1).

6. The bus duct drop hammer mechanical impact test device according to any one of claims 1 to 4, characterized in that: A base frame is welded to the bottom of the legs of the frame (1), a triangular steel plate is attached to the weld for reinforcement, and the universal wheel (8) is mounted on the base frame.

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