Lightning protection grounding device for port crane

Abstract

The utility model relates to the technical field of grounding devices, and provides a lightning protection grounding device for a port crane, which comprises a support main body, the grounding body is connected with the supporting body and located below the supporting body. The pressure adjusting piece is movably arranged on the supporting main body, and the pressure adjusting piece is close to or away from the grounding body after moving; the two ends of the pressure spring piece are connected with the pressure adjusting piece and the grounding body respectively, and the pressure spring piece is configured to provide force abutting against the track for the grounding body. According to the technical scheme, the problem that in the prior art, a torsion spring or a tension spring fixed in a traditional grounding device is prone to being limited by the service life, so that a grounding body is prone to aging and loosening along with the increase of the service life is solved.

Description

Technical Field

[0001] This utility model relates to the field of grounding device technology, specifically to a lightning protection grounding device for a port crane. Background Technology

[0002] Since gantry cranes are all used outdoors and are quite tall, they are at risk of being struck by lightning during the rainy season. This could cause structural, mechanical, or electrical damage to the gantry crane. Therefore, it is necessary to install a lightning protection grounding device during the use of gantry cranes. This is achieved by the contact between the grounding body on the gantry crane's own traveling mechanism and the rail.

[0003] However, existing grounding devices use torsion springs, tension springs, and other fixed forms to ensure that the steel structure of the gantry crane is always in stable contact with the track. Since the pressure cannot be adjusted, they are prone to aging or corrosion as the years of use increase, which can lead to poor contact between the grounding body and the crane track. Utility Model Content

[0004] This utility model proposes a lightning protection grounding device for port cranes, which solves the problem that the fixed torsion springs or tension springs in traditional grounding devices are easily limited by their service life, causing the grounding body to age and loosen easily with the increase of service life.

[0005] The technical solution of this utility model is as follows:

[0006] A lightning protection grounding device for a port crane, used to conduct current from the mounting plate to the rail, includes:

[0007] A support body for mounting on the mounting plate;

[0008] A grounding electrode, which is used to connect to the mounting plate and is located below the support body;

[0009] A pressure adjusting component is movably mounted on the support body, and after the pressure adjusting component moves, it moves closer to or further away from the grounding body;

[0010] A compression spring is provided, with its two ends connected to the pressure adjustment member and the grounding body, respectively. The compression spring is configured to provide a force to the grounding body that presses against the track.

[0011] As a further technical solution, the compression spring is arranged in a vertical direction, and the pressure adjustment element is threaded onto the support body.

[0012] As a further technical solution, the supporting body is U-shaped, and the supporting body includes:

[0013] Two support rods are spaced apart, and both support rods are used to be mounted on the mounting plate;

[0014] The mounting rod has its two ends respectively mounted on the two support rods, and the pressure adjustment component is movably mounted on the mounting rod.

[0015] As a further technical solution, it also includes:

[0016] A connecting rod, one end of which is hinged to the grounding body, and the other end of which is hinged to the mounting plate;

[0017] A wire, one end of which is connected to the grounding electrode, and the other end of which is used to connect to the mounting plate.

[0018] As a further technical solution, it also includes:

[0019] Two limiting members are respectively disposed at the bottom of the pressure adjusting member and the top of the grounding body. Each limiting member has a limiting groove, and both ends of the compression spring are respectively located in the two limiting grooves.

[0020] As a further technical solution, both the support rod and the mounting rod are L-shaped, and the two support rods are symmetrically arranged.

[0021] As a further technical solution, the two ends of the mounting rod are respectively movably mounted on the two support rods, and the limiting member of the grounding body is movably mounted along the central axis of the grounding body.

[0022] As a further technical solution, both support rods have strip-shaped holes with disassembly openings. The two ends of the mounting rod are respectively movably disposed within the two strip-shaped holes. The system also includes:

[0023] Fastener 1 connects the support rod and the mounting rod.

[0024] As a further technical solution, the top of the grounding body has a groove, and the limiting member of the grounding body is movably disposed within the groove.

[0025] As a further technical solution, the slide groove has a plurality of positioning holes, the plurality of positioning holes being arranged at intervals along the length direction of the slide groove, and further includes:

[0026] Fastener 2, which penetrates the limiting member and is threaded onto one of the positioning holes.

[0027] The working principle and beneficial effects of this utility model are as follows:

[0028] 1. Improve the stability of conductive grounding: By using a compression spring to provide a force that presses tightly against the rail, it can effectively ensure that the grounding body and the rail always maintain good contact. Even if the crane has been used for a long time and the parts have worn or displaced, the current can be stably conducted to the rail. To a certain extent, it can compensate for the performance decline caused by the aging and corrosion of the compression spring itself, reduce the risk of lightning strikes damaging the crane, ensure the safe operation of the crane, and solve the problem of poor contact between the grounding body and the crane rail.

[0029] 2. Adaptable to complex working conditions: The pressure adjustment component is movable on the support body, which can flexibly adjust the force of the pressure spring according to the actual situation to adapt to different track conditions and complex working conditions such as vibration and displacement of the crane during operation. Traditional torsion spring fixing methods cannot be adjusted. Once performance changes due to aging, corrosion, etc. occur, it is difficult to ensure stable contact between the grounding body and the track. This lightning protection grounding device improves the adaptability and stability of the lightning protection grounding device.

[0030] 3. Avoid the risk of the crane getting stuck when passing through the track joint: Set the edge of the contact surface between the grounding electrode and the crane track to be arc-shaped. The grounding electrode can pass through the track joint smoothly, and at the same time protect against slight settlement and deformation of the track. Attached Figure Description

[0031] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0032] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0034] Figure 3 This utility model Figure 2 Enlarged view of section A in the middle;

[0035] Figure 4 This is a schematic diagram of the third embodiment of the present invention;

[0036] Figure 5 This utility model Figure 4 Enlarged view of section B in the middle;

[0037] Figure 6 This utility model Figure 4 Enlarged view of section C.

[0038] In the diagram: 1. Mounting plate, 2. Track, 3. Support body, 301. Support rod, 302. Mounting rod, 303. Strip hole, 304. Disassembly opening, 4. Grounding body, 401. Slide groove, 402. Positioning hole, 5. Pressure adjustment component, 6. Compression spring component, 7. Connecting rod, 8. Wire, 9. Limiting component, 901. Limiting groove, 10. Fastener one, 11. Fastener two. Detailed Implementation

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0040] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0041] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Reference Figures 1-6 This first embodiment of the present invention proposes a lightning protection grounding device for a port crane, used to conduct current from a mounting plate 1 to a rail 2, comprising: a support body 3 for mounting on the mounting plate 1; a grounding body 4 for connecting to the mounting plate 1 and located below the support body 3; a pressure adjusting member 5 movably mounted on the support body 3, the pressure adjusting member 5 moving closer to or further away from the grounding body 4; and a spring member 6 with its two ends connected to the pressure adjusting member 5 and the grounding body 4 respectively, the spring member 6 being configured to provide a force to the grounding body 4 pressing against the rail 2.

[0044] First embodiment, such as Figure 1 As shown, the usage process of this grounding device is as follows:

[0045] First, install the support body 3 onto the mounting plate 1. After welding or bolting to ensure the support body 3 is securely installed, connect the grounding body 4 to the support body 3, positioning it at a suitable position below the support body 3, such as directly below. Next, adjust the relative position of the pressure adjusting component 5 and the grounding body 4 according to actual needs. This can be done by using threads, snap-fit ​​connections, or other methods. For example, a linear guide rail can be installed on the support body 3, and the pressure adjusting component 5 can move linearly by cooperating with the guide rail via a slider. Alternatively, a threaded hole can be made on the support body 3, and the pressure adjusting component 5 can be threaded into the threaded hole. Finally, fix both ends of the pressure spring 6 to the pressure adjusting component 5 and the grounding body 4 respectively, providing a certain preload. The connection of the pressure spring 6 can be achieved by welding or snap-fit ​​connection.

[0046] During the operation of the mounting plate 1, the compression spring 6 always provides a force to the grounding body 4 to press against the rail 2, so that the grounding body 4 and the rail 2 maintain close contact. However, when various special situations such as aging of the compression spring 6 or damage to the rail 2 cause poor contact between the grounding body 4 and the rail 2, the distance between the compression spring 6 and the grounding body 4 can be changed by moving the pressure adjustment component 5, thereby adjusting the compression of the compression spring 6, increasing or decreasing the force on the grounding body 4, so as to restore good contact between the grounding body 4 and the rail 2.

[0047] The grounding electrode 4 is placed below the supporting body 3, for example, directly below it, mainly to stabilize the function of the compression spring 6. This forces the supporting body 3, which is in a fixed position, to act as a base, so that the compression spring 6 continuously presses down on the grounding electrode 4, maintaining close contact between the grounding electrode 4 and the track 2. Compared with the traditional method of relying solely on the torsional force of the torsion spring on the mounting plate 1 to keep the grounding electrode 4 tightly against the track 2, this disclosure improves upon the method by using a compression spring. This can, to a certain extent, compensate for the performance degradation caused by the aging and corrosion of the compression spring 6 itself. At the same time, the position can be adjusted to change the pressing force, ensuring that the grounding electrode 4 can be tightly against the track 2 under any circumstances, thus completing the conductive grounding.

[0048] Specifically, for each component of the grounding device, the supporting body 3 can be integrally formed into a plate or strip shape using steel structure and welded to the bottom of the gantry-type mounting plate 1. The grounding body 4 is connected to the supporting body 3, generally by welding or bolting, or by hinged or sliding connection of the rod body, to accommodate the relative displacement between the grounding body 4 and the mounting plate 1 due to its close contact with the track 2, ensuring connection stability. To ensure good conductivity, the connection points should be reliably electrically connected and connected with wires 8. For example, a connecting lug is provided at the connection end between the grounding body 4 and the mounting plate 1, and the two are fastened together by bolts. Conductive grease is applied to the connection point to reduce contact resistance.

[0049] In addition, the grounding electrode 4 is usually made of a metal material with good conductivity, such as copper plate or copper rod. Its shape and size should be designed according to the actual grounding requirements and installation space. It is generally rectangular plate-shaped, which can better cover the entire track 2.

[0050] Furthermore, the compression spring 6 is arranged in a vertical direction, and the pressure adjustment component 5 is threaded onto the support body 3.

[0051] In this embodiment, the compression spring 6 is limited to the vertical direction to maximize the force of the compression spring 6; at the same time, the movement mode of the pressure adjustment component 5 is set to a threaded connection to ensure adjustability while controlling costs to the greatest extent and simplifying the structure, which greatly improves the ease of operation of this disclosure.

[0052] Furthermore, the support body 3 is U-shaped and includes two support rods 301 spaced apart, both of which are used to be mounted on the mounting plate 1; the two ends of the mounting rod 302 are respectively mounted on the two support rods 301, and the pressure adjustment component 5 is movably mounted on the mounting rod 302.

[0053] In this embodiment, the U-shaped support body 3 consists of two spaced-apart support rods 301 and an installation rod 302 connecting them. This structure forms a stable frame that can more evenly distribute the forces from the grounding body 4, the compression spring 6, and the forces that may be generated by lightning strikes. Compared with a single support structure, it can better resist external forces and facilitates early production and installation.

[0054] Specifically, to ensure sufficient strength and stability, the support rod 301 and mounting rod 302 are typically made of high-strength metal materials, such as Q345 steel. The two support rods 301 are welded to the mounting plate 1 at intervals, and the two ends of the mounting rod 302 are fastened to the support rod 301 with high-strength bolts. Holes are pre-drilled in the support rod 301 to prevent problems such as weld cracking during long-term use. The mounting rod 302 is equipped with a pressure adjustment component 5 to ensure that the force of the compression spring 6 acts as much as possible on the center position of the grounding body 4, so as to ensure that the grounding body 4 is fully pressed against the track 2, rather than tilted or only partially pressed.

[0055] Furthermore, it also includes: one end of the connecting rod 7 is hinged to the grounding body 4, and the other end is hinged to the mounting plate 1; one end of the wire 8 is connected to the grounding body 4, and the other end is connected to the mounting plate 1.

[0056] In this embodiment, the connection between the grounding body 4 and the mounting plate 1 consists of two parts: one is the conductor 8, which is used for conducting electricity; the other is the swivel connection through the connecting rod 7 and the spool, which can accommodate the amount of displacement. After the grounding body 4 is in close contact with the track 2 of the mounting plate 1, the angle between the connecting rod 7 and the horizontal line is between 30° and 45°. The horizontal height of the supporting body 3 can be consistent with the upper pin of the connecting rod 7, making full use of the overall space.

[0057] Furthermore, it also includes: two limiting members 9 are respectively disposed at the bottom of the pressure adjusting member 5 and the top of the grounding body 4, the limiting members 9 have limiting grooves 901, and the two ends of the compression spring member 6 are respectively located in the two limiting grooves 901.

[0058] Second embodiment, such as Figure 2 , 3 As shown, improvements are made based on the first embodiment. The following only describes the differences from the first embodiment. In this embodiment:

[0059] To ensure that the spring 6 exerts its force stably and remains vertical, a limiting component 9 is welded to the bottom of the pressure adjusting component 5 and the top of the grounding body 4. A limiting groove 901 is provided on the limiting component 901, which is just enough for one end of the spring 6 to be placed in it. The outer diameter of the spring 6 is equal to the diameter of the cylindrical limiting groove 901. In this way, the spring 6 can be kept in a vertical position and the spring 6 can be easily disassembled and replaced, avoiding the welding affecting the replacement operation.

[0060] Furthermore, both the support rod 301 and the mounting rod 302 are L-shaped, and the two support rods 301 are symmetrically arranged.

[0061] In this embodiment, an L-shaped support rod 301 and a mounting rod 302 are used. The two support rods 301 are symmetrically arranged, which makes it convenient for the mounting rod 302 to slide on the support rod 301 at the beginning, thereby determining the specific position of the pressure adjustment component 5 on the mounting rod 302, and also makes it convenient to process in the early stage.

[0062] Furthermore, the two ends of the mounting rod 302 are respectively moved and set on the two support rods 301, and the limiting member 9 of the grounding body 4 is moved and set along the central axis of the grounding body 4.

[0063] The third embodiment, such as Figure 4-6 As shown, this embodiment is an improvement upon the second embodiment. The following only describes the differences from the second embodiment.

[0064] The two ends of the mounting rod 302 can move on the support rod 301. The L-shaped design allows the structure of the entire support body 3 to be finely adjusted by the pressure adjustment component 5 according to the actual installation environment and the structural characteristics of the mounting plate 1. Specifically, spaced holes or strip grooves can be opened on the support rod 301. The end of the mounting rod 302 has a protrusion set in the hole or strip groove so that the mounting rod 302 can change its position accurately and stably relative to the support rod 301.

[0065] The limiting member 9 of the grounding body 4 is further restricted to move along the central axis of the grounding body 4, which means that the force of the compression spring member 6 can continuously act on the central axis of the grounding body 4, ensuring that the grounding body 4 is as close as possible to the track 2. This is because some tracks 2 are curved surfaces, which prevents the grounding body 4 from tilting and contacting the track, resulting in poor grounding effect.

[0066] Furthermore, both support rods 301 have strip-shaped holes 303, and the strip-shaped holes 303 have disassembly openings 304. The two ends of the mounting rod 302 are respectively movably disposed in the two strip-shaped holes 303. It also includes a fastener 10 connecting the support rod 301 and the mounting rod 302.

[0067] In this embodiment, to facilitate changing the position of the pressure adjustment component 5 relative to the grounding body 4, and to facilitate the installation and disassembly of the mounting rod 302 by workers, the support rod 301 is provided with a strip hole 303. The end away from the gantry mounting plate 1 has a disassembly opening 304. During installation, the protrusions at both ends of the mounting rod 302 can be inserted into the strip hole 303 along the disassembly opening 304. After determining the position, the support body 3 is arranged using fasteners such as nuts 10. Conversely, disassembly is the same. After removing the fasteners 10, the mounting rod 302 can be pulled out directly from the disassembly opening 304.

[0068] Furthermore, the top of the grounding body 4 has a groove 401, and the limiting member 9 of the grounding body 4 is movable within the groove 401.

[0069] In this embodiment, in order to quickly determine that the limiting member 9 of the grounding body 4 can move along the central axis of the rectangular grounding body 4, a groove 401 is opened on the central axis of the grounding body 4 so that the bottom of the limiting member 9 can slide with the protrusion that matches the cross-sectional shape of the groove 401, thereby realizing the precise sliding of the limiting member 9 and facilitating the initial installation.

[0070] Furthermore, the slide 401 has a plurality of positioning holes 402, which are arranged at intervals along the length of the slide 401, and also includes a fastener 2 11 that penetrates the limiting member 9 and is threadedly disposed at one of the positioning holes 402.

[0071] In this embodiment, a number of positioning holes 402 are opened in the slide groove 401 at intervals along its length, so that the position of the limiting member 9 relative to the grounding body 4 is finally determined by the fastener 2 11. Specifically, the fastener 2 11 passes through the opening of the limiting member 9 and is finally threadedly connected to one of the positioning holes 402, which is convenient for workers to disassemble and maintain.

[0072] The entire installation process has been changed: After determining the positions of the sliding mounting rod 302 and the upper limit piece 9 of the grounding body 4, tighten the corresponding fasteners and press the spring piece 6 into the two sets of limiting grooves 901; or first determine the position of one of the limiting grooves 901, place the spring piece 6 first, then determine the position of the other limiting groove 901, and press the spring piece 6 in to complete the installation.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A lightning protection grounding device for a port crane, used to conduct current from the mounting plate (1) to the rail (2), characterized in that, include: Support body (3), the support body (3) is used to be installed on the mounting plate (1); Grounding electrode (4), which is used to connect to the mounting plate (1) and is located below the support body (3); Pressure adjustment component (5), which is movably disposed on the support body (3), and after the pressure adjustment component (5) moves, it moves closer to or further away from the grounding body (4). A compression spring (6) is connected at both ends to the pressure adjustment member (5) and the grounding body (4), respectively. The compression spring (6) is configured to provide a force to the grounding body (4) that presses against the track (2).

2. The lightning protection grounding device for a port crane according to claim 1, characterized in that, The compression spring (6) is arranged in the vertical direction, and the pressure adjustment component (5) is threaded onto the support body (3).

3. A lightning protection grounding device for a port crane according to any one of claims 1 or 2, characterized in that, The supporting body (3) is U-shaped, and the supporting body (3) includes: Two support rods (301) are spaced apart, and both support rods (301) are used to be mounted on the mounting plate (1); Mounting rod (302), with its two ends respectively mounted on the two support rods (301), and pressure adjustment component (5) movably mounted on the mounting rod (302).

4. A lightning protection grounding device for a port crane according to claim 3, characterized in that, Also includes: Connecting rod (7), one end of which is hinged to the grounding body (4), and the other end is hinged to the mounting plate (1); A conductor (8) is connected at one end to the grounding body (4) and at the other end to the mounting plate (1).

5. A lightning protection grounding device for a port crane according to claim 3, characterized in that, Also includes: Two limiting members (9) are respectively disposed at the bottom of the pressure adjusting member (5) and the top of the grounding body (4). The limiting member (9) has a limiting groove (901). The two ends of the compression spring member (6) are respectively located in the two limiting grooves (901).

6. A lightning protection grounding device for a port crane according to claim 5, characterized in that, Both the support rod (301) and the mounting rod (302) are L-shaped, and the two support rods (301) are arranged symmetrically.

7. A lightning protection grounding device for a port crane according to claim 6, characterized in that, The two ends of the mounting rod (302) are respectively movably mounted on the two support rods (301), and the limiting member (9) of the grounding body (4) is movably mounted along the central axis of the grounding body (4).

8. A lightning protection grounding device for a port crane according to claim 7, characterized in that, Both support rods (301) have slotted holes (303), each slotted hole (303) having a disassembly opening (304). The mounting rod (302) is movably disposed at both ends within the two slotted holes (303), and further includes: Fastener 1 (10) connects the support rod (301) and the mounting rod (302).

9. A lightning protection grounding device for a port crane according to claim 7, characterized in that, The grounding body (4) has a groove (401) at the top, and the limiting member (9) of the grounding body (4) is movably disposed in the groove (401).

10. A lightning protection grounding device for a port crane according to claim 9, characterized in that, The slide groove (401) has a plurality of positioning holes (402), which are spaced apart along the length of the slide groove (401), and further includes: Fastener 2 (11) passes through the limiting member (9) and is threaded at one of the positioning holes (402).

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