A short-circuit protection device suitable for electric flat car track and roller shutter door

Abstract

The utility model discloses a kind of short-circuit protection devices suitable for electric flat car track, it is related to the technical field of electrical safety technology. Including insulating plate and connecting piece;Two ends of insulating plate extend in the direction away from guide rail respectively, form a receiving platform;One end of connecting piece is detachably connected on receiving platform, there is the opening of the side away from insulating plate on connecting piece and can accommodate the lower side edge of roller shutter door, and the opening pitch of connecting piece is adjustable, the other end of connecting piece is fixedly connected with the lower side edge of roller shutter door in opening;The above-mentioned protection device installation mode is simple, quick replacement and simple structure, convenient to operate, very high safety, and adaptability is stronger to different specifications of roller shutter door.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical safety technology, specifically a short-circuit protection device suitable for electric flatbed vehicle tracks. Background Technology

[0002] Currently, in order to obtain better metal mechanical properties and improve the physical and chemical strength and internal structure of steel, large and medium-sized steel mills in China use electric flatbed trolleys to transfer the core or other heavy equipment and materials during the roll changing process. At present, the trolley rails are fixed on the ground. When the trolley is needed, the roller shutter door above the rail is opened. After use, when the roller shutter door is closed, it directly contacts the rail, causing a short circuit accident and resulting in circuit burnout.

[0003] The biggest problems with electric flatbed trucks during use are safety and stability. If temporary protective measures are set up, the following issues arise: temporary protective measures can only be implemented when the machine is stopped, which consumes maintenance time, which is not feasible in the already time-sensitive maintenance process; even with verification by various personnel, the safety of temporary protective measures is greatly compromised in such a time-sensitive maintenance environment.

[0004] To address the aforementioned problems, a steel pushing device for improving sawing efficiency is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a short-circuit protection device suitable for electric flatbed vehicle tracks, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a short-circuit protection device suitable for electric flatbed vehicle tracks, comprising an insulating plate and a connector, wherein both ends of the insulating plate extend away from the guide rail to form a receiving platform for receiving the connector and preventing the lower side of the roller shutter door from contacting the guide rail, thereby avoiding short circuit.

[0007] One end of the connector is detachably connected to the receiving platform, facilitating replacement when different connectors need to be replaced. The connector has an opening facing away from the insulating plate that can accommodate the lower side of the roller shutter door, and the opening spacing of the connector is adjustable to accommodate roller shutter doors of different specifications. The other end of the connector is fixedly connected to the lower side of the roller shutter door within the opening to prevent the connector from slipping off when the roller shutter door is descending or rising, thereby improving the stability of the device.

[0008] The connector includes a first angle iron and a second angle iron. The angle iron is easy to drill and bolt. The first and second angle irons are detachably connected to the receiving platform of the insulating plate. The first and second angle irons are symmetrically arranged on both sides of the receiving platform of the insulating plate, and the openings of the first and second angle irons face away from the roller shutter door. The first angle iron, the second angle iron and the insulating plate form a slot that can accommodate the lower side of the roller shutter door and has an adjustable spacing. The spacing of the slot can be adjusted to adapt to different specifications of roller shutter doors according to different size requirements.

[0009] Furthermore, the insulating plate is pre-drilled with circular holes for connecting the first angle iron and the second angle iron.

[0010] A first strip-shaped hole is pre-set on the side of the first angle iron connected to the insulating plate, and the length direction of the first strip-shaped hole is parallel to the displacement direction of the electric flatbed vehicle. A second strip-shaped hole is pre-set on the side of the second angle iron connected to the insulating plate, and the length direction of the second strip-shaped hole is parallel to the displacement direction of the electric flatbed vehicle.

[0011] The first angle iron and the insulating plate are connected together by a screw passing through the first strip hole of the first angle iron and the circular hole of the insulating plate, and the first angle iron can slide on the insulating plate; the second angle iron and the insulating plate are connected together by a screw passing through the second strip hole of the second angle iron and the circular hole of the insulating plate, and the second angle iron can slide on the insulating plate.

[0012] By setting a circular hole on the angle iron and a strip hole parallel to the displacement direction of the electric flatbed vehicle on the insulating plate, it is ensured that the screw can slide in the strip hole after passing through the circular hole. This ensures that the angle iron can slide parallel to the displacement direction of the electric flatbed vehicle on the insulating plate, making the spacing of the slots adjustable to meet the needs of different working conditions.

[0013] Furthermore, a first hole is drilled on the side of the first angle iron perpendicular to the insulating plate to connect with the roller shutter door, and the first angle iron is fixedly connected to the roller shutter door through the first hole; a second hole is drilled on the side of the second angle iron perpendicular to the insulating plate to connect with the roller shutter door, and the second angle iron is fixedly connected to the roller shutter door through the second hole; this prevents the first and second angle irons from falling off the roller shutter door during the rising and falling of the roller shutter door due to shaking or other reasons, thereby preventing the roller shutter door from directly contacting the guide rail of the electric flatbed cart and causing a short circuit.

[0014] Furthermore, the first angle iron is fixedly connected to the roller shutter door by inserting a dovetail screw into the first drilled hole, and the second angle iron is fixedly connected to the roller shutter door by inserting a dovetail screw into the second drilled hole. The advantage of using dovetail screws is that no additional accessories are required, installation is simple, and there is less damage to the roller shutter door. Drilling holes in the roller shutter door is unnecessary; only hammering or other methods are needed, thus improving installation efficiency.

[0015] A roller shutter door is applied above the guide rail of an electric flatbed cart. The lower side of the roller shutter door is provided with the aforementioned protective device. The roller shutter door is positioned directly above the guide rail of the electric flatbed cart, or the roller shutter door is located on one side of the guide rail of the electric flatbed cart at a relative position.

[0016] Analysis shows that the present invention provides a short-circuit protection device suitable for electric flatbed vehicle tracks, comprising an insulating plate and a connector. Both ends of the insulating plate extend away from the guide rail, forming a receiving platform to support the upper side of the roller shutter door, thus isolating the roller shutter door from the guide rail and preventing short circuits. The receiving platform is used to connect the connector. One end of the connector is detachably connected to the receiving platform, facilitating the replacement of connectors of different sizes and types to meet different size requirements. The connector has an opening facing away from the insulating plate and capable of accommodating the lower side of the roller shutter door. The opening spacing of the connector is adjustable. The opening is used to accommodate the lower side of the roller shutter door, preventing the roller shutter door from contacting the guide rail due to shaking, thus avoiding a short circuit. The adjustable spacing of the opening can accommodate roller shutter doors of different specifications. The other end of the connector is fixedly connected to the lower side of the roller shutter door within the opening, preventing the connector from detaching from the roller shutter door during its up-and-down movement, thus preventing the roller shutter door from contacting the guide rail and causing a short circuit.

[0017] Compared with the closest existing technology, the technical solution provided by this utility model has the following advantages:

[0018] The current trolley rails are fixed to the ground. When the trolley is needed, the roller shutter above the rails is opened. After use, when the roller shutter closes, it directly contacts the rails, causing a short circuit and resulting in circuit burnout. This new invention features a simple structure, convenient operation, and high safety. It can complete the above tasks in a very short time, and is stable, reliable, and performs well.

[0019] In existing technologies, temporary protective measures can only be implemented when the machine is stopped, which consumes maintenance time, which is unacceptable given the already crucial time constraints of maintenance. This invention connects the insulating plate to the roller shutter door using a connector, allowing the protective device to be inspected before and after the roller shutter door rises and falls, thus improving efficiency. Furthermore, by adjusting the slot in the connector that receives the lower side of the roller shutter door, it can accommodate roller shutter doors of different specifications, improving the applicability of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a short-circuit protection device for electric flatbed vehicle tracks, which is an example of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of an insulating plate for a short-circuit protection device suitable for electric flatbed vehicle tracks, as an example of this utility model.

[0022] Figure 3 This is a schematic diagram of the first angle iron of a short-circuit protection device for electric flatbed vehicle tracks, which is an example of this utility model.

[0023] In the diagram: 1. Insulating board; 2. Receiving platform; 3. First angle iron; 4. Second angle iron; 5. First strip hole; 6. Second strip hole; 7. First drilled hole; 8. Second drilled hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0028] like Figure 1 As shown, this utility model provides a technical solution: a short-circuit protection device suitable for electric flatbed vehicle tracks, including an insulating plate 1 and a connector. The two ends of the insulating plate 1 extend away from the guide rail to form a receiving platform 2. The receiving platform 2 is used to receive the lower side of the roller shutter door to prevent the lower side of the roller shutter door from contacting the guide rail of the electric flatbed vehicle and causing a short circuit, and is also used to connect the connector to prevent the connector from directly contacting the guide rail of the electric flatbed vehicle.

[0029] One end of the connector is detachably connected to the receiving platform, facilitating the replacement of connectors of different specifications. The connector has an opening facing away from the insulating plate 1 and capable of accommodating the lower side of the roller shutter door. The spacing between the openings of the connector is adjustable, allowing for adjustment of the opening spacing according to different specifications of roller shutter doors, thereby improving the applicability of the device. The other end of the connector is fixedly connected to the lower side of the roller shutter door within the opening, preventing the connector from detaching from the lower side of the roller shutter door, which would cause the insulating plate to detach from the roller shutter door, resulting in the lower side of the roller shutter door contacting the guide rail of the electric flatbed cart and causing a short circuit.

[0030] Preferably, the connector includes a first angle iron 3 and a second angle iron 4; the first angle iron 3 and the second angle iron 4 are detachably connected to the receiving platform 2 of the insulating plate 1, the first angle iron 3 and the second angle iron 4 are symmetrically arranged on both sides of the receiving platform 2 of the insulating plate 1, and the openings of the first angle iron 3 and the second angle iron 4 are respectively facing away from the roller shutter door, and a slot for accommodating the roller shutter door and with adjustable spacing is formed between the first angle iron 3, the second angle iron 4 and the insulating plate 1.

[0031] As can be seen from the above analysis, the connecting parts adopt the first angle iron 3 and the second angle iron 4. The purpose is that the angle iron will not easily deform during the rising and falling of the roller shutter door, and the angle iron is easy to process, making it convenient for subsequent operations such as drilling holes on it; the first angle iron 3, the second angle iron 4 and the insulating plate 1 form a slot to accommodate the roller shutter door and the spacing can be adjusted; this is convenient for roller shutter doors of different specifications and has stronger adaptability.

[0032] Preferably, the insulating plate 1 has a pre-set circular hole for connecting the first angle iron 3 and the second angle iron 4.

[0033] like Figure 2As shown, a first strip hole 5 is pre-set on the side of the first angle iron 3 connected to the insulating plate 1. The length direction of the first strip hole 5 is parallel to the displacement direction of the electric flatbed vehicle. A second strip hole 6 is pre-set on the side of the second angle iron 4 connected to the insulating plate 1. The length direction of the second strip hole 6 is parallel to the displacement direction of the electric flatbed vehicle.

[0034] The first angle iron 3 and the insulating plate 1 are connected together by a screw passing through the first strip hole 5 of the first angle iron 3 and the circular hole of the insulating plate, and the first angle iron 3 can slide on the insulating plate 1; the second angle iron 4 and the insulating plate 1 are connected together by a screw passing through the second strip hole 6 of the second angle iron 4 and the circular hole of the insulating plate, and the second angle iron 4 can slide on the insulating plate 1.

[0035] As can be seen from the above analysis, the strip-shaped holes on the insulating plate 1, which cooperate with the circular holes on the first angle iron 3 and the second angle iron 4, enable the first angle iron 3 and the second angle iron 4 to slide on the receiving platform 2 of the insulating plate 1. This allows the spacing of the slots formed by the first angle iron 3, the second angle iron 4 and the insulating plate 1 to be adjusted to accommodate roller shutters of different specifications and improve the adaptability of the device.

[0036] Preferably, such as Figure 3 As shown, a first drilled hole 7 is drilled on the side of the first angle iron 3 perpendicular to the insulating plate 1 to connect with the roller shutter door, and the first angle iron 3 is fixedly connected to the roller shutter door through the first drilled hole 7; a second drilled hole 8 is drilled on the side of the second angle iron 4 perpendicular to the insulating plate 1 to connect with the roller shutter door, and the second angle iron 4 is fixedly connected to the roller shutter door through the second drilled hole 8.

[0037] As can be seen from the above analysis, by drilling a first hole 7 on the first angle iron 3 to fix it to the insulating plate 1, and drilling a second hole 8 on the second angle iron 4 to fix it to the insulating plate 1, the protection device is prevented from falling off the first and second angle irons from the roller shutter door due to impacts during the raising and lowering of the roller shutter door, which would cause the guide rail of the electric flatbed cart to directly contact the lower side of the roller shutter door, thereby causing a short circuit accident.

[0038] More preferably, the first angle iron 3 is fixedly connected to the roller shutter door by inserting a dovetail nail into the first drilled hole 7, and the second angle iron 4 is fixedly connected to the roller shutter door by inserting a dovetail nail into the second drilled hole 8.

[0039] As can be seen from the above analysis, using dovetail nails to connect the first angle iron 3 and the second angle iron 4 to the roller shutter door allows the dovetail nails to be inserted into the roller shutter door simply by tapping, eliminating the need for pre-drilling holes in the roller shutter door, reducing damage to the roller shutter door, eliminating the need for additional fastening parts, simplifying installation, and the barbs of the dovetail nails will lock into the roller shutter door, providing a stronger fixing effect.

[0040] A roller shutter door is applied above the guide rail of an electric flatbed cart. The lower side of the roller shutter door is provided with the aforementioned protective device. The roller shutter door is positioned directly above the guide rail of the electric flatbed cart, or the roller shutter door is located on one side of the guide rail of the electric flatbed cart at a corresponding position. The protective device is installed on the roller shutter door, so that the protective device can be activated whether the electric flatbed cart is running or stopped, thereby improving the safety and stability of the electric flatbed cart before and after use.

[0041] The working process of using this device for short-circuit protection of electric flatbed trucks is as follows:

[0042] Install one end of the connector on the receiving platform 2 of the insulating board 1, adjust the slot spacing of the connector to adapt to the size of the roller shutter door, insert the lower side of the roller shutter door into the slot, and then fix the other end of the connector to the roller shutter door; before the electric flatbed truck is started, the roller shutter door is isolated from the guide rail of the electric flatbed truck through the protection device to avoid short circuit; similarly, when the electric flatbed truck is turned off, the roller shutter door falls down and is isolated from the guide rail of the electric flatbed truck through the protection device to avoid short circuit, thereby improving the safety and stability of the roller shutter door.

[0043] In summary, the protective device of this utility model achieves the following technical effects:

[0044] In existing technologies, the trolley rails are fixed to the ground. When the trolley is in use, the roller shutter above the rails is opened. After use, when the roller shutter closes, it directly contacts the rails, causing a short circuit and resulting in circuit burnout. This invention provides a protective device that is simple to install, easy to operate, and extremely safe.

[0045] The receiving platform 2 of the insulating plate 1 is used to receive the connectors and to prevent the lower side of the roller shutter door from contacting the guide rail, thus avoiding short circuits.

[0046] The opening spacing of the connector is adjustable, allowing for adjustments to the opening spacing according to different specifications of roller shutter doors, thereby improving the applicability of the device.

[0047] The connector is fixedly connected to the roller shutter door so that the electric flatbed trolley can operate before and after it is turned on.

[0048] The connector uses a first angle iron 3 and a second angle iron 4. A screw passes through the first strip hole 5 of the first angle iron 3 and the circular hole of the insulating plate to connect the first angle iron 3 and the insulating plate 1, and the first angle iron 3 can slide on the insulating plate 1. A screw passes through the second strip hole 6 of the second angle iron 4 and the circular hole of the insulating plate to connect the second angle iron 4 and the insulating plate 1, and the second angle iron 4 can slide on the insulating plate 1. The angle irons are not easily deformed and are easy to process, facilitating subsequent drilling and other operations. By setting strip holes on the angle irons to match the circular holes on the insulating plate, it can adapt to roller shutter doors of different specifications.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A short-circuit protection device suitable for electric flatbed vehicle tracks, characterized in that, Includes insulating boards and connectors; The two ends of the insulating plate extend away from the guide rail to form a receiving platform; One end of the connector is detachably connected to the receiving platform. The connector has an opening facing away from the insulating plate and capable of accommodating the lower side of the roller shutter. The spacing between the openings of the connector is adjustable. The other end of the connector is fixedly connected to the lower side of the roller shutter within the opening.

2. The protection device according to claim 1, characterized in that, The connector includes a first angle iron and a second angle iron; The first angle iron and the second angle iron are detachably connected to the receiving platform of the insulating plate. The first angle iron and the second angle iron are symmetrically arranged on both sides of the receiving platform of the insulating plate, and the openings of the first angle iron and the second angle iron face away from the side of the roller shutter door. A slot is formed between the first angle iron, the second angle iron and the insulating plate to accommodate the lower side of the roller shutter door and the spacing is adjustable.

3. The protection device according to claim 2, characterized in that, The insulating plate has a pre-set circular hole for connecting the first angle iron and the second angle iron; A first strip hole is pre-set on the side of the first angle iron connected to the insulating plate, and the length direction of the first strip hole is parallel to the displacement direction of the electric flatbed vehicle. A second strip hole is pre-set on the side of the second angle iron connected to the insulating plate, and the length direction of the second strip hole is parallel to the displacement direction of the electric flatbed vehicle. The first angle iron and the insulating plate are connected together by a screw passing through the first strip hole of the first angle iron and the circular hole of the insulating plate, and the first angle iron can slide on the insulating plate; The second angle iron and the insulating plate are connected together by a screw passing through the second strip hole of the second angle iron and the circular hole of the insulating plate, and the second angle iron can slide on the insulating plate.

4. The protection device according to claim 2, characterized in that, A first hole is drilled on the side of the first angle iron perpendicular to the insulating plate to connect with the roller shutter door. The first angle iron is fixedly connected to the roller shutter door through the first hole. A second hole is drilled on the side of the second angle iron perpendicular to the insulating plate to connect with the roller shutter door. The second angle iron is fixedly connected to the roller shutter door through the second hole.

5. The protection device according to claim 4, characterized in that, The first angle iron is fixedly connected to the roller shutter door by inserting a dovetail nail through the first drilled hole, and the second angle iron is fixedly connected to the roller shutter door by inserting a dovetail nail through the second drilled hole.

6. A roller shutter door, applied above the guide rail of an electric flatbed truck, characterized in that, The lower side of the roller shutter door is provided with a protective device as described in any one of claims 1-5.

7. The roller shutter door according to claim 6, characterized in that, The roller shutter door is positioned directly above the electric flatbed cart's guide rail.

8. The roller shutter door according to claim 6, characterized in that, The roller shutter door is located on one side opposite to the electric flatbed vehicle's guide rail.

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