A communication power supply system for container gantry cranes

Abstract

This invention discloses a communication power supply system for a container gantry crane, solving the problem of unstable power supply stability caused by the unstable connection structure between the crane's current collection mechanism and the sliding contact line in existing technologies. The system includes: a bracket, a guide rail, a power supply / communication sliding contact line disposed inside the guide rail, and a current collection / communication mechanism. The current collection / communication mechanism includes: a moving part, which is slidably mounted on the bottom of the guide rail and connected to the crane; a mounting part, which is connected to the moving part and has a brush and a communication antenna mounted on its top; an adjusting part, used to adjust the mounting part to move on the moving part; a follower part, which is slidably mounted on the moving part; a transmission part, which is used to drive the follower part to slide in the opposite direction to the moving direction of the mounting part when the mounting part moves upward relative to the moving part; and a clamping part, which is rotatably connected to the moving part and slidably connected to the follower part. When the mounting part moves on the moving part and approaches the power supply / communication sliding contact line, the clamping part clamps the guide rail.

Description

Technical Field

[0001] This invention belongs to the field of container crane control technology, specifically, it relates to a communication and power supply system for a container gantry crane. Background Technology

[0002] Container gantry cranes are a type of bridge crane, also known as portal cranes. They are mainly used for loading and unloading operations in ports, railway freight yards, and container stations. They are characterized by high site utilization, large operating range, wide adaptability, and strong versatility, and are widely used in container loading and unloading yards.

[0003] With technological advancements, existing container gantry cranes are typically equipped with power collection mechanisms and wireless communication mechanisms. These, along with the sliding contact lines in the guide rails laid out within the freight yard, enable the crane to receive power and communicate with the central control room. When the crane is lifting and moving containers, the load is heavy, and the complex working environment of the freight yard makes the crane prone to swaying or even movement. This can cause poor contact between the power collection mechanism and the power supply sliding contact lines, resulting in unstable power supply and affecting the crane's normal operation.

[0004] To address the issue of low power supply stability in crane current collector mechanisms, Chinese patent application CN206432541U discloses a novel low-altitude sliding contact line current collector. This device features a current collector mounted on the crane's drive frame, with a current collector assembly frame on the current collector. A drive frame mounting plate is mounted on the drive frame, and a flexible pantograph is mounted on the drive frame mounting plate. The current collector assembly frame is elastically connected to the drive frame mounting plate via the flexible pantograph. A limiting component includes a limiting rail and matching limiting wheels. The current collector is mounted on the current collector assembly frame, which is spring-loaded onto the crane drive frame. When equipment such as stackers, stacker-reclaimers, or reclaimers shake, the spring between the current collector assembly frame and the crane drive frame deforms and absorbs the shaking energy, thus greatly ensuring the stability of the current collector. The limiting component further enhances the stability of the current collector assembly frame, thereby improving the stability of the equipment's power supply.

[0005] Although the aforementioned patent application can reduce the impact of equipment shaking on power supply stability to a certain extent, the connection between the current collector and the sliding contact line is a simple plug-in connection structure, which is unstable. There is still a problem of poor contact between the current collector and the sliding contact line, which affects the power supply stability of the equipment. Summary of the Invention

[0006] The purpose of this invention is to provide a communication power supply system for container gantry cranes, which solves the problem of unstable power supply stability caused by the unstable connection structure between the crane's current collection mechanism and the sliding contact line in the prior art.

[0007] To achieve the above-mentioned objectives, the present invention employs the following technical solution: A communication power supply system for a container gantry crane includes: The support frame is set on the ground; A guide rail, which is mounted on the bracket and has a downward-facing opening; A power supply / communication sliding contact line is disposed inside the guide rail; A current collector / communication mechanism, which is connected to the guide rail and the crane respectively; The current collection / communication mechanism includes: A movable part, which is slidably mounted on the bottom of the guide rail and connected to the crane, slides on the guide rail as the crane moves; The mounting part is connected to the moving part, and a brush and a communication antenna are mounted on its top; the brush draws power from the power supply sliding contact line in the power supply / communication sliding contact line, and the communication antenna communicates with the communication sliding contact line in the power supply / communication sliding contact line; An adjustment section is provided for adjusting the mounting section, so that the mounting section moves on the moving section. The follower part is slidably mounted on the moving part; A transmission unit is used to connect the mounting unit and the follower unit, and when the mounting unit moves upward relative to the moving unit, it drives the follower unit to slide on the moving unit in a direction opposite to the moving direction of the mounting unit; The clamping part is rotatably connected to the moving part and slidably connected to the following part; when the mounting part moves on the moving part and approaches the power supply / communication sliding contact line, the clamping part clamps the guide rail; when the mounting part moves on the moving part and moves away from the power supply / communication sliding contact line, the clamping part releases the guide rail.

[0008] In some embodiments of this application, the clamping part includes two symmetrically arranged semi-enclosed frames, the two semi-enclosed frames being located on both sides of the follower part, and each semi-enclosed frame comprising: The first semi-enclosing frame has a first lateral extension, a first longitudinal extension, and a first obliquely tapering portion connected in sequence; the first lateral extension extends from the bottom outer side of the guide rail toward the follower portion in the width direction of the guide rail, and the free end of the first lateral extension at the bottom of the guide rail is slidably connected to the follower portion; the first longitudinal extension extends from the bottom of the guide rail to the top of the guide rail in the height direction of the guide rail; the first obliquely tapering portion tapes inward from the outer side of the guide rail toward the top of the guide rail in a direction that surrounds the guide rail; a shaft hole is formed on the first lateral extension. The second semi-enclosing frame, which is spaced apart from the first semi-enclosing frame along the length of the guide rail, has a second lateral extension, a second longitudinal extension, and a second obliquely inwardly tapering portion connected in sequence. The second lateral extension extends from one outer side of the bottom of the guide rail toward the follower portion in the width direction of the guide rail, and the free end of the second lateral extension at the bottom of the guide rail is slidably connected to the follower portion. The second longitudinal extension extends from the bottom of the guide rail to the top of the guide rail in the height direction of the guide rail. The second obliquely inwardly tapering portion tapers inward from the outer side of the guide rail toward the top of the guide rail in a direction that surrounds the guide rail. A shaft hole is formed on the second lateral extension. Connecting borders are used to connect the first semi-enclosing border and the second semi-enclosing border.

[0009] In some embodiments of this application, the semi-enclosed frame further includes a first roller disposed on the first obliquely inward portion and a second roller disposed on the second obliquely inward portion.

[0010] In some embodiments of this application, the follower portion includes a closed frame, the middle of which forms a cavity for accommodating the mounting portion; the outer side of the closed frame facing the first lateral extension and the second lateral extension has a follower portion slope that tapers inward from top to bottom; the free ends of the first lateral extension and the free ends of the second lateral extension each have a clamping portion slope that tapers inward from bottom to top, and the follower portion slope slides against the clamping portion slope.

[0011] In some embodiments of this application, the transmission unit includes two sets of cross lifting mechanisms symmetrically arranged on two opposite sides inside the closed frame of the follower unit, each set of the cross lifting mechanisms including: A support plate is located within the cavity formed by the middle of the closed frame, close to and fixed on one side frame of the closed frame. The transmission unit hinge shaft is mounted on the support plate; The first cross lifting rod is hinged to the hinge shaft of the transmission part, one end of which is slidably connected to the follower part, and the other end is slidably connected to the mounting part; The second cross lifting rod is hinged to the hinge shaft of the transmission part, with one end slidably connected to the follower part and the other end slidably connected to the mounting part.

[0012] In some embodiments of this application, a first sliding groove is provided on the side frame of the support plate fixed in the follower part, and a second sliding groove is provided at a position corresponding to the side frame in the mounting part. Limiting posts are respectively provided at both ends of the first cross lifting rod and both ends of the second cross lifting rod. The follower part is slidably connected to the first cross lifting rod and the second cross lifting rod through the first sliding groove, and the mounting part is slidably connected to the first cross lifting rod and the second cross lifting rod through the second sliding groove.

[0013] In some embodiments of this application, the movable part has a threaded hole, the mounting part has a positioning hole corresponding to the position of the threaded hole on its bottom surface near the movable part, and the adjusting part includes an adjusting bolt, the stud of the adjusting bolt passing through the threaded hole and placed in the positioning hole.

[0014] In some embodiments of this application, the system further includes: A buffer mechanism, which is connected to the current collection / communication mechanism and the crane respectively; The buffer mechanism includes: The first connecting part is fixedly connected to the crane; The second connecting part is slidably connected to the first connecting part; An elastic element, one end of which is connected to the first connecting part, and the other end of which is connected to the second connecting part; The third connecting part has one end rotatably connected to the moving part and the other end rotatably connected to the second connecting part. The crane pulls the moving part to slide on the guide rail through the third connecting part.

[0015] In some embodiments of this application, a first hinge shaft is provided on the bottom surface of the moving part, a second hinge shaft is provided on the second connecting part, the third connecting part is rotatably connected to the moving part through the first hinge shaft, and the third connecting part is connected to the second connecting part through the second hinge shaft.

[0016] In some embodiments of this application, the buffer mechanism further includes: The first sprocket is sleeved on the first hinge shaft and rotatably connected to the first hinge shaft; The second sprocket is sleeved on the second hinge shaft and is fixedly connected to the second hinge shaft; A chain is mounted on the first sprocket and the second sprocket.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are: The container gantry crane communication power supply system provided by this invention, by setting a moving part, an installation part, an adjustment part, a follower part, a transmission part, and a clamping part in the power collection / communication mechanism, allows the installation part to move along the moving part and approach the power supply / communication sliding contact line in the guide rail using the adjustment part. During this process, the follower part is driven by the transmission part to slide in the opposite direction to the movement of the installation part. The sliding of the follower part causes the clamping part to rotate on the moving part and clamp the guide rail, thus realizing the installation of the power collection / communication mechanism and the guide rail. Conversely, the installation part is adjusted by the adjustment part to move away from the power supply / communication contact line in the guide rail. During the communication sliding contact line process, the transmission part drives the follower part to slide in the opposite direction to the moving direction of the mounting part. The sliding of the follower part causes the clamping part to rotate on the moving part and release the guide rail, thereby realizing the disassembly of the current collector / communication mechanism from the guide rail. Using the current collector / communication mechanism provided by the present invention, not only can its assembly and disassembly with the guide rail be easily realized, but also when it is assembled with the guide rail, it can achieve a tight and stable connection with the guide rail, thereby ensuring stable contact between the brush on the mounting part and the power supply sliding contact line in the guide rail, avoiding the problem of unstable power supply caused by poor contact between the brush and the power supply sliding contact line.

[0018] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A perspective view of an embodiment of the communication power supply system for a container gantry crane provided by the present invention; Figure 2 for Figure 1 Exploded view of the embodiment; Figure 3 for Figure 1 A cross-sectional view of a portion of the structure of the embodiment; Figure 4 for Figure 1 A schematic diagram of the current collection / communication mechanism in the first state in the embodiment; Figure 5 for Figure 1 A schematic diagram of the current collector / communication mechanism in the second state in the embodiment.

[0021] The reference numerals and their corresponding component names in the above figures are as follows: 1. Bracket; 2. Guide rail; 3. Power supply / communication contact line; 4. Current collection / communication mechanism; 41. Moving part; 411. Upper plate; 412. Lower plate; 413. Folding part; 414. Clearance part; 415. Threaded hole; 416. Extension part; 417. First hinge shaft; 418. First rotating shaft; 419. Second rotating shaft; 42. Mounting section; 421. Second slide rail; 43. Adjustment Department; 44. Follower part; 441. Closed frame; 442. Cavity; 443. Sloping surface of follower part; 444. First groove; 45. Transmission unit; 451. First cross lifting mechanism; 4511. Support plate; 4513. First cross lifting rod; 4514. Second cross lifting rod; 4515. Limiting post; 452. Second cross lifting mechanism; 46. ​​Clamping part; 461. First semi-enclosed frame; 462. Second semi-enclosed frame; 4611. First semi-enclosed frame; 46111. First lateral extension; 46112. Clamping part inclined surface; 46113. First longitudinal extension; 46114. First obliquely inwardly tapered part; 46115. First roller; 46116. Shaft hole; 4612. Second semi-enclosed frame; 46121. Second lateral extension; 46122. Clamping part inclined surface; 46123. Second longitudinal extension; 46124. Second obliquely inwardly tapered part; 46125. Second roller; 46126. Shaft hole; 4613. Connecting frame; 47. Brushes and communication antennas; 48. Buffer mechanism; 481. First connecting part; 482. Second connecting part; 4821. Second hinge shaft; 483. Elastic element; 484. Third connecting part; 485. First sprocket; 486. Second sprocket; 487. Chain. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "longitudinal", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0024] Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," "third," etc., may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. "Several" means one or more.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] It should be noted that the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0027] The purpose of this invention is to provide a communication and power supply system for container gantry cranes. This system utilizes a power supply sliding contact line and collector brushes to supply power to the crane from the ground, and a communication sliding contact line and communication antenna to enable communication between the control room and the crane. By combining the sliding contact line, brushes, and communication antenna, communication and power supply are achieved. Compared to traditional cable reel methods, this system offers a simpler structure, more reliable transmission, and easier operation. It solves the technical problems of high maintenance costs and short service life associated with traditional methods, effectively extending the service life and operational reliability of the communication and power transmission system. Furthermore, the special structural design of the collector / communication mechanism in the communication and power supply system allows for easier assembly and disassembly of the collector / communication mechanism with the guide rails, while ensuring stable contact between the sliding contact line and brushes, reducing the occurrence of poor contact, and making the collector / communication mechanism move more smoothly with the crane, thus improving the stability of the crane's power supply.

[0028] Figures 1 to 3 An embodiment of a communication power supply system for a container gantry crane is shown, wherein, Figure 1 This is a three-dimensional schematic diagram of the embodiment. Figure 2 and Figure 3 These are an exploded view of the structure and a cross-sectional view of a portion of the structure of this embodiment.

[0029] like Figures 1 to 3 As shown, the communication power supply system for the container gantry crane in this embodiment includes a bracket 1, a guide rail 2, a power supply / communication sliding contact line 3, and a power collection / communication mechanism 4.

[0030] The system comprises several support brackets 1, each mounted on the ground, the exact number determined by site conditions and crane operation requirements. Guide rails 2 are installed on the upper part of support brackets 1, near their top. The openings of guide rails 2 face downwards, and several power supply / communication contact lines 3 are installed inside. The power supply contact lines, used for transmitting electrical energy, are metal rails with an outer insulating material, while the communication contact lines, used for transmitting information, are semi-enclosed conduits with internal grooves. A ground communication device and a ground power supply device are installed on the ground to one side of support brackets 1, with the power supply contact lines connected to the ground power supply device via wiring. The ground communication device is connected to the central control room via fiber optic cable, receiving fiber optic signals from the central control room, converting them into radio signals, and transmitting them to the communication contact lines within guide rails 2. The ground communication device also receives radio signals from the communication contact lines, converts them into fiber optic signals, and transmits them to the central control room.

[0031] The current collector / communication mechanism 4 is connected to both the guide rail 2 and the crane (not shown in the figure). As the crane moves along the guide rail 2, the current collector / communication mechanism 4 slides along the guide rail 2, following the crane's movement. It is used to obtain the electrical energy required by the crane from the guide rail 2 and also for communication between the crane and the communication contact line in the guide rail 2. The current collector / communication mechanism 4 includes a moving part 41, a mounting part 42, an adjusting part 43, a following part 44, a transmission part 45, a clamping part 46, and brushes and a communication antenna 47. The structure of each part of the current collector / communication mechanism 4 will be described in detail below.

[0032] The movable part 41 is slidably mounted on the bottom of the guide rail 2 and connected to the crane, and can follow the movement of the crane to drive the entire current collector / communication mechanism 4 to slide on the guide rail 2.

[0033] The mounting part 42 is connected to the moving part 41, and the follower part 44 is slidably mounted on the moving part 41. The mounting part 42 and the follower part 44 are also connected by a transmission part 45. The adjustment part 43 is used to adjust the mounting part 42 so that the mounting part 42 can move relative to the moving part 41. Moreover, the transmission part 45 is provided so that the mounting part 42 and the follower part 44 move in opposite directions on the moving part 41. Specifically, if the mounting part 42 moves upward on the moving part 41, the follower part 44 slides downward on the moving part 41; if the mounting part 42 moves downward on the moving part 41, the follower part 44 slides upward on the moving part 41.

[0034] The top of the mounting section 42 is equipped with a brush and a communication antenna 47. The brush is used to draw power from the power supply sliding contact line in the guide rail 2 after contacting it, and transmits the obtained power to the power receiving device of the crane. The communication antenna is used to communicate with the communication sliding contact line in the guide rail 2, thereby realizing the information transmission between the crane and the central control room.

[0035] The clamping part 46 is rotatably connected to the moving part 41, and the clamping part 46 can rotate relative to the moving part 41 about a rotation axis. The clamping part 46 is also slidably connected to the follower part 44, and the follower part 44 is also connected to the mounting part 42. The connection relationship between the three satisfies the following: when the mounting part 42 moves on the moving part 41 and approaches the power supply / communication sliding contact line 3, the follower part 44 slides in the opposite direction to the mounting part 42, and the clamping part 46 clamps the guide rail 2 under the action of the follower part 44; when the mounting part 42 moves on the moving part 41 and moves away from the power supply / communication sliding contact line 3, the follower part 44 slides in the opposite direction to the mounting part 42, and the clamping part 46 releases the guide rail 2 under the action of the follower part 44.

[0036] The container gantry crane communication power supply system with the above structure, during the process of adjusting the mounting part 42 on the moving part 41 by adjusting the mounting part 43 to move towards and contact the power supply / communication sliding contact line 3 in the guide rail 2, the transmission part 45 drives the follower part 44 to slide in the opposite direction to the moving direction of the mounting part (i.e., downward away from the guide rail 2). The sliding of the follower part 44 causes the clamping part 46 to rotate on the moving part 41 and clamp the guide rail 2, thus realizing the installation of the power collection / communication mechanism 4 and the guide rail 2. During the process of adjusting the mounting part 42 on the moving part 41 by adjusting the mounting part 43 to move downward away from the power supply / communication sliding contact line 3 in the guide rail 2, the transmission part 45 drives the follower part 44 to slide in the opposite direction to the moving direction of the mounting part 42. The sliding of the follower part 44 causes the clamping part 46 to rotate on the moving part 41 and release the guide rail 2, thus realizing the removal of the power collection / communication mechanism 4 from the guide rail 2. Using the current collector / communication mechanism provided by the present invention, only the adjustment part 43 needs to be operated, thereby facilitating the assembly and disassembly of the current collector / communication mechanism 4 of the crane and the guide rail 2. When it is assembled to the guide rail, the clamping action of the clamping part 46 can achieve a tight and stable connection between it and the guide rail, thereby ensuring stable contact between the brush on the mounting part 42 and the power supply sliding contact line in the guide rail 2, and avoiding the problem of unstable power supply caused by poor contact between the brush and the power supply sliding contact line.

[0037] In some other embodiments, the communication power supply system also includes a buffer mechanism 48 connecting the crane and the power collection / communication mechanism 4, in order to reduce the problem of unstable power supply caused by the crane vibrating or shifting and pulling on the power collection / communication mechanism 4.

[0038] See Figures 1 to 5As shown, the buffer mechanism 48 includes a first connecting part 481 fixedly connected to the crane, a second connecting part 482 slidably connected to the first connecting part 481, an elastic element 483 connecting the first connecting part 481 and the second connecting part 482 respectively, and a third connecting part 484. The third connecting part 484 is rotatably connected to the second connecting part 482 via a second hinge shaft 4821, and is also rotatably connected to the moving part 41 via a first hinge shaft 417. By utilizing the first connecting part 481, the second connecting part 482, and the third connecting part 484 in the buffer mechanism 48, on the one hand, the connection between the crane and the current collector / communication mechanism 4 is realized; on the other hand, the crane also pulls the moving part 41 to slide on the guide rail 2 through the buffer mechanism 48, especially the third connecting part 484.

[0039] After the crane is connected to the current collector / communication mechanism 4 via the buffer mechanism 48, if the distance and / or height between the crane and the current collector / communication mechanism 4 changes, the first connecting part 481, which is fixedly connected to the crane, will change accordingly. If the first connecting part 481 moves horizontally and moves closer to the current collector / communication mechanism 4, since the second connecting part 482 is in a sliding connection with the first connecting part 481, and an elastic element 483 is also connected between the second connecting part 482 and the first connecting part 481, the horizontal distance between the second connecting part 482 and the first connecting part 481 can be changed by squeezing the elastic element 483 (when the elastic element is in a free state) or reducing the tension of the elastic element 483 (when the elastic element is in a stretched state), so that the second connecting part 482 slides relative to the first connecting part 481. However, the connection position between the second connecting part 482 and the third connecting part 484 remains unchanged, which does not affect the position of the current collector / communication mechanism 4 and keeps the connection between the current collector / communication mechanism 4 and the guide rail 2 stable. If the first connecting part 481 moves horizontally away from the current collector / communication mechanism 4, the horizontal distance between the second connecting part 482 and the first connecting part 481 can be changed by stretching the elastic element 483 (when the elastic element is in a free state) or reducing the compression of the elastic element 483 (when the elastic element is in a compressed state), but the connection position between the second connecting part 482 and the third connecting part 484 remains unchanged, without affecting the position of the current collector / communication mechanism 4, and maintaining the stable connection between the current collector / communication mechanism 4 and the guide rail 2.

[0040] If the first connecting part 481 changes height in the vertical direction following the crane, the height between the second connecting part 482 and the third connecting part 484 will also change. Since the third connecting part 484 is rotatably connected to the second connecting part 482 and also rotatably connected to the moving part 41, the third connecting part 484 adjusts its position by its own rotation without affecting the position of the current collector / communication mechanism 4, thus maintaining the stable connection between the current collector / communication mechanism 4 and the guide rail 2.

[0041] By utilizing a buffer mechanism, the pulling force on the current collector / communication mechanism 4 during crane operation is reduced, enabling the current collector / communication mechanism 4 to actively maintain a stable position relative to the guide rail 2, thereby ensuring the stability of power supply.

[0042] Since the crane mainly pulls the moving part 41 to slide on the guide rail 2 via the third connecting part 484, the third connecting part 484 needs to be made of a rigid material. While the rigid third connecting part 484 can provide some cushioning, it is difficult to achieve precise cushioning, making the current collector / communication mechanism 4 susceptible to being pulled by the crane. To solve this technical problem, in some other embodiments, the cushioning mechanism also includes a sprocket and chain structure. Specifically, a first sprocket 485 is mounted on the first hinge shaft 417 and rotatably connected to it, and a second sprocket 486 is mounted on the second hinge shaft 4821 and fixedly connected to it. A chain 487 is provided on the first sprocket 485 and the second sprocket 486. By setting up a flexible cushioning structure composed of sprockets and chains, abnormal movements such as crane displacement and vibration can be sensed more accurately, and precise cushioning adjustments can be made, thereby further reducing the risk of the current collector / communication mechanism 4 being pulled and improving the stable connection between the current collector / communication mechanism 4 and the guide rail 2.

[0043] The following further combines Figures 1 to 5 The structure of the communication power supply system in this embodiment is described in detail.

[0044] The movable part 41 includes an upper plate 411 and a lower plate 412, forming an operating space between them. Folding portions 413 extending upwards are formed at the middle positions of the left and right sides of the upper plate 411, with each folding portion 413 forming two clearance portions 414 between it and the side of the upper plate 411. A first pivot 418 and a second pivot 419 are respectively provided on the outer side of the left and right walls of the upper plate 411, both located below the folding portions 413 on their respective sides. A through threaded hole 415 is formed on the bottom surface of the upper plate 411, and a downwardly extending extension 416 is provided at the bottom of the lower plate 412. Specifically, the extension 416 includes two extension plates spaced apart front to back, with a first hinge shaft 417 between the two extension plates.

[0045] The follower part 44 includes a closed frame 441, which forms a cavity 442 in the middle. The inner sides of the front and rear side frames of the closed frame 441 each form a groove, and a first sliding groove 444 is provided on each groove. The first sliding groove 444 extends laterally within the groove of the side frame it is located in, forming a long, narrow groove structure. Follower part inclined surfaces 443 are formed on the outer sides of the left and right side frames of the closed frame 441, and these inclined surfaces 443 are inward-curving inclined surfaces from top to bottom. The follower part 44 is entirely located on the moving part 41, specifically within the area enclosed by the bottom plate of the upper plate 411 and the two folding parts 413.

[0046] The mounting part 42 is a block structure adapted to the shape of the cavity 442 of the follower part 44. The size of its outer frame is slightly smaller than the maximum size of the cavity 442, so that the mounting part 42 can be accommodated in the cavity 442 and can freely enter and exit the cavity 442. A brush and a communication antenna 47 are provided on the top surface of the mounting part 42, and a positioning hole (not shown in the figure) is provided on the bottom surface of the mounting part 42. This positioning hole is a blind hole, and its position corresponds vertically to the threaded hole 415 on the moving part 41. Second slide grooves 421 are respectively provided in the middle of the outer surfaces of the front and rear side frames of the mounting part 42, and the position of the second slide grooves 421 corresponds to the first slide groove 444 in the follower part 44.

[0047] The transmission unit 45 includes two sets of cross lifting mechanisms, namely a first cross lifting mechanism 451 and a second cross lifting mechanism 452. The two sets of cross lifting mechanisms are symmetrically arranged front and rear inside the closed frame 441 of the follower unit 44. Taking the first cross lifting mechanism 451 as an example, its structure and connection relationship are described.

[0048] The first cross lifting mechanism 451 includes a support plate 4511, which is located in the cavity 442 of the follower part 44, close to and fixed to the front side frame of the closed frame 441. Specifically, it is fixed to the front side frame corresponding to the middle position of the first slide groove 444. A transmission hinge shaft (not shown in the figure) extending toward the interior of the closed frame 441 is provided on the upper part of the support plate 4511. A first cross lifting rod 4513 and a second cross lifting rod 4514 are hinged to the transmission hinge shaft. Limiting posts 4515 are respectively provided at both ends of each cross lifting rod. In this design, a limiting post 4515 at one end of the first cross lifting rod 4513 is disposed in a first sliding groove 444 on the follower part 44, and a limiting post 4515 at the other end is disposed in a second sliding groove 421 on the mounting part 42. Similarly, a limiting post 4515 at one end of the second cross lifting rod 4514 is disposed in a first sliding groove 444 on the follower part 44, and a limiting post 4515 at the other end is disposed in a second sliding groove 421 on the mounting part 42. The cooperation between the limiting post 4515 and the first sliding groove 444 enables a sliding connection between the follower part 44 and the first cross lifting mechanism 451 and the second cross lifting mechanism 452; similarly, the cooperation between the limiting post 4515 and the second sliding groove 421 enables a sliding connection between the mounting part 42 and the first cross lifting mechanism 451 and the second cross lifting mechanism 452. Furthermore, by utilizing the transmission part 45 composed of two sets of cross lifting mechanisms, the follower part 44 and the mounting part 42 can slide in opposite directions on the moving part 41.

[0049] The adjusting part 43 is an adjusting bolt, whose stud passes through the threaded hole 415 on the moving part 41, and its top is placed in the positioning hole of the mounting part 42. Through the cooperation of the adjusting part 43, the threaded hole 415, and the positioning hole, the connection and positioning between the mounting part 42 and the moving part 41 are realized. Since the follower part 44 is connected and limited to the mounting part 42 through the transmission part 45, the connection and limitation between the moving part 41, the mounting part 42, and the follower part 44 are realized, ensuring that the mounting part 42 and the follower part 44 can move stably relative to the moving part 41.

[0050] The clamping part 46 includes two symmetrically arranged semi-enclosed frames, namely the first semi-enclosed frame 461 and the second semi-enclosed frame 462, which are located on the left and right sides of the follower part 44, respectively. The structure and connection relationship of the first semi-enclosed frame 461 are described below as an example.

[0051] The first semi-enclosed frame 461 includes a first semi-enclosed frame 4611, a second semi-enclosed frame 4612, and a connecting frame 4613. The first semi-enclosed frame 4611 and the second semi-enclosed frame 4612 are spaced apart in front and behind along the length direction of the guide rail 2 and are connected by the horizontal connecting frame 4613.

[0052] The first semi-enclosed frame 4611 includes a first lateral extension 46111, a first longitudinal extension 46113, and a first obliquely inwardly tapering portion 46114 connected in sequence. The first lateral extension 46111 extends from the bottom outer side (left side in this embodiment) of the guide rail 2 towards the follower portion 44 in the width direction of the guide rail 2, and the free end of the first lateral extension 46111 at the bottom of the guide rail 2 is slidably connected to the follower portion 44. Specifically, the free end of the first lateral extension 46111 has a clamping slope 46112 that tapers inward from bottom to top, and the closed frame 441 of the follower portion 44 slides against the clamping slope 46112 towards the follower slope 443 of the first lateral extension 46111. The first longitudinal extension 46113 extends from the bottom to the top of the guide rail 2 in the height direction of the guide rail 2, while the first obliquely inwardly tapering portion 46114 extends from the outside of the guide rail 2 to the top of the guide rail 2 in a direction that surrounds the guide rail 2. The first semi-enclosing frame 4611 also includes a first roller 46115, which is disposed on the first obliquely inwardly tapering portion 46114. When the clamping portion 46 clamps the guide rail 2, the first roller 46115 is in close contact with the guide rail 2, thereby improving the smoothness of sliding when the crane moves along the guide rail 2.

[0053] The second semi-enclosed frame 4612 includes a second lateral extension 46121, a second longitudinal extension 46123, and a second obliquely inwardly tapering portion 46124 connected in sequence. The second lateral extension 46121 extends from the bottom outer side (left side in this embodiment) of the guide rail 2 towards the follower portion 44 in the width direction of the guide rail 2, and the free end of the second lateral extension 46121 at the bottom of the guide rail 2 is slidably connected to the follower portion 44. Specifically, the free end of the second lateral extension 46121 has a clamping slope 46122 that tapers inward from bottom to top, and the closed frame 441 of the follower portion 44 slides against the clamping slope 46122 towards the second lateral extension 46121. The second longitudinal extension 46123 extends from the bottom to the top of the guide rail 2 in the height direction of the guide rail 2, while the second obliquely inwardly tapering portion 46124 extends from the outside of the guide rail 2 to the top of the guide rail 2 in a direction that surrounds the guide rail 2. The second semi-enclosing frame 4612 also includes a second roller 46125, which is disposed on the second obliquely inwardly tapering portion 46124. When the clamping portion 46 clamps the guide rail 2, the second roller 46125 is also in close contact with the guide rail 2. Thus, when the crane moves along the guide rail 2, the current collector / communication mechanism 4 can also slide on the guide rail 2 using the second roller 46125, improving the smoothness of sliding.

[0054] Furthermore, a shaft hole 46116 is formed on the first lateral extension 46111, and a shaft hole 46126 is formed on the second lateral extension 46121. These two shaft holes are used for rotatable connection with the first rotating shaft 418 on the moving part 41, thereby achieving a rotatable connection between the first semi-enclosed frame 461 and the moving part 41. Correspondingly, a shaft hole is also provided on the second semi-enclosed frame 462 for rotatable connection with the second rotating shaft 419 on the moving part 41, thereby achieving a rotatable connection between the second semi-enclosed frame 462 and the moving part 41.

[0055] The first connecting part 481 in the buffer mechanism 48 is a frame-shaped structure with a cavity, which is fixedly connected to the crane. Several cables (not shown in the figure) are arranged on the surface of the first connecting part 481. One end of the cables is connected to the electrical and communication components in the crane, and the other end is connected to the current collection / communication mechanism 4. The second connecting part 482 is also a frame-shaped structure, partially located in the cavity of the first connecting part 481, and can be slidably connected to the first connecting part 481 via a slide rail or slide groove structure (not shown). An elastic element 483 is also provided inside the cavity of the first connecting part 481; specifically, the elastic element 483 can be a spring. One end of the spring is connected to the bottom wall of the inner cavity of the first connecting part 481 (the right side wall of the inner cavity in the figure), and the other end is connected to the side wall of the second connecting part 482 near the bottom wall of the inner cavity. A second hinge shaft 4821 is provided on the end of the second connecting part 482 away from the elastic element 483. The third connecting part 484 in the buffer mechanism 48 has a racetrack-shaped frame structure. The inner wall of the arc-shaped part at one end is rotatably connected to a portion of the first hinge shaft 417, and the inner wall of the arc-shaped part at the other end is rotatably connected to a portion of the second hinge shaft 4821. A first sprocket 485 is also fitted on the first hinge shaft 417, and the first sprocket 485 is rotatably connected to the first hinge shaft 417. The position of the first sprocket 485 on the first hinge shaft 417 is different from the position where the third connecting part 484 is rotatably connected to the first hinge shaft 417. A second sprocket 486 is also fitted on the second hinge shaft 4821, and the second sprocket 486 is fixedly connected to the second hinge shaft 4821. The position of the second sprocket 486 on the second hinge shaft 4821 is different from the position where the third connecting part 484 is rotatably connected to the second hinge shaft 4821. Moreover, in this embodiment, the frame structure of the third connecting part 484 extends in the width direction toward the first sprocket 485, the second sprocket 486 and the chain 487, until it surrounds the outer surface of the two sprockets and the chain (but does not contact the sprockets and the chain), thus achieving the protective and aesthetic functions of the sprocket and chain structure.

[0056] The assembly process of a communication power supply system with the above-mentioned specific structure is as follows: First, the guide rail 2 is installed on one side of the crane's movement track using bracket 1.

[0057] Then, the current collector / communication mechanism 4 is installed onto the guide rail 2. Specifically, the top of the moving part 41 is first brought into contact with the bottom of the guide rail 2; then, the adjusting bolt, which serves as the adjusting part 43, is rotated upwards, and its stud pushes the mounting part 42 upwards until the brushes at the top of the mounting part 42 and the brushes in the communication antenna 47 contact the power supply sliding contact line 3 in the guide rail 2, while the brushes and the communication antenna in the communication antenna 47 enter the internal groove of the communication sliding contact line 3. After assembly, the communication antenna does not contact the inner wall of the communication sliding contact line to reduce friction. During the upward movement of the mounting part 42, the limiting pins at the upper ends of all the lifting rods of the two cross lifting mechanisms of the transmission part 45 slide towards each other in the second sliding groove 421 of the mounting part 42, driving the cross lifting rods to rotate on the hinge shaft of the transmission part, thereby driving the limiting pins at the lower ends of the lifting rods to slide towards each other in the first sliding groove 444 of the follower part 44, ultimately causing the follower part 44 to move downwards. The follower 44 moves downward, causing the follower inclined surface 443 to slide against the clamping inclined surfaces 46112 and 46122. Under the pressure of the follower inclined surface 443, the two semi-enclosed frames of the clamping part 46 rotate along their respective first rotating shaft 418 and second rotating shaft 419, thereby causing the tops of the two inclined inward portions of each semi-enclosed frame to move towards clamping the guide rail 2, and causing each roller to abut against the guide rail 2. At this time, the current collector / communication mechanism 4 presents as follows: Figure 4 The first state shown.

[0058] Finally, the power collection / communication mechanism 4 is fixed to the crane via the buffer mechanism 48, completing the installation and assembly of the communication power supply system.

[0059] To remove the current collector / communication mechanism 4 from the guide rail 2, simply rotate the adjusting bolt downwards. The mounting part 42 will then move downwards, causing the mounting part 42 and the transmission part 45 to move the follower part 44 upwards. This releases the pressure exerted by the follower part 44 on the clamping part 46. The semi-enclosed frame of the clamping part 46 rotates along the rotation axis, causing the tops of the two obliquely inward-retracting portions of each semi-enclosed frame to move away from the guide rail 2, thus releasing the guide rail 2. At this time, the current collector / communication mechanism 4 presents as follows: Figure 5 The second state is shown. Finally, the moving part 41, together with the mounting part 42, the adjusting part 43, the following part 44, the transmission part 45 and the clamping part 46, are removed from the guide rail 2, thus completing the removal of the current collector / communication mechanism 4 from the guide rail 2.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A container gantry crane communication power supply system, characterized by, The system includes: The support frame is set on the ground; A guide rail, which is mounted on the bracket and has a downward-facing opening; A power supply / communication sliding contact line is disposed inside the guide rail; A current collector / communication mechanism, which is connected to the guide rail and the crane respectively; The current collection / communication mechanism includes: A movable part, which is slidably mounted on the bottom of the guide rail and connected to the crane, slides on the guide rail as the crane moves; The mounting part is connected to the moving part, and a brush and a communication antenna are mounted on its top; the brush draws power from the power supply sliding contact line in the power supply / communication sliding contact line, and the communication antenna communicates with the communication sliding contact line in the power supply / communication sliding contact line; An adjustment part is used to adjust the mounting part so that the mounting part moves on the moving part; a threaded hole is formed on the moving part, and a positioning hole corresponding to the position of the threaded hole is formed on the bottom surface of the mounting part near the moving part; the adjustment part includes an adjustment bolt, and the stud of the adjustment bolt passes through the threaded hole and is placed in the positioning hole. The follower part is slidably mounted on the moving part; A transmission unit is used to connect the mounting unit and the follower unit, and when the mounting unit moves upward relative to the moving unit, it drives the follower unit to slide on the moving unit in a direction opposite to the moving direction of the mounting unit; The clamping part is rotatably connected to the moving part and slidably connected to the following part; when the mounting part moves on the moving part and approaches the power supply / communication sliding contact line, the clamping part clamps the guide rail; when the mounting part moves on the moving part and moves away from the power supply / communication sliding contact line, the clamping part releases the guide rail. The clamping part includes two symmetrically arranged semi-enclosed frames, which are respectively located on both sides of the follower part. Each semi-enclosed frame includes: The first semi-enclosing frame has a first lateral extension, a first longitudinal extension, and a first obliquely tapering portion connected in sequence; the first lateral extension extends from the bottom outer side of the guide rail toward the follower portion in the width direction of the guide rail, and the free end of the first lateral extension at the bottom of the guide rail is slidably connected to the follower portion; the first longitudinal extension extends from the bottom of the guide rail to the top of the guide rail in the height direction of the guide rail; the first obliquely tapering portion tapes inward from the outer side of the guide rail toward the top of the guide rail in a direction that surrounds the guide rail; a shaft hole is formed on the first lateral extension. The second semi-enclosing frame, which is spaced apart from the first semi-enclosing frame along the length of the guide rail, has a second lateral extension, a second longitudinal extension, and a second obliquely inwardly tapering portion connected in sequence. The second lateral extension extends from one outer side of the bottom of the guide rail toward the follower portion in the width direction of the guide rail, and the free end of the second lateral extension at the bottom of the guide rail is slidably connected to the follower portion. The second longitudinal extension extends from the bottom of the guide rail to the top of the guide rail in the height direction of the guide rail. The second obliquely inwardly tapering portion tapers inward from the outer side of the guide rail toward the top of the guide rail in a direction that surrounds the guide rail. A shaft hole is formed on the second lateral extension. Connecting borders are used to connect the first semi-enclosing border and the second semi-enclosing border; The follower portion includes a closed frame, the middle of which forms a cavity for accommodating the mounting portion; the outer side of the closed frame facing the first lateral extension and the second lateral extension has a follower portion slope that tapers inward from top to bottom; the free ends of the first lateral extension and the free ends of the second lateral extension each have a clamping portion slope that tapers inward from bottom to top, and the follower portion slope slides against the clamping portion slope. The transmission unit includes two sets of cross lifting mechanisms symmetrically arranged on two opposite sides inside the closed frame of the follower unit, each set of the cross lifting mechanisms including: A support plate is located within the cavity formed by the middle of the closed frame, close to and fixed on one side frame of the closed frame. The transmission unit hinge shaft is mounted on the support plate; The first cross lifting rod is hinged to the hinge shaft of the transmission part, one end of which is slidably connected to the follower part, and the other end is slidably connected to the mounting part; The second cross lifting rod is hinged to the hinge shaft of the transmission part, with one end slidably connected to the follower part and the other end slidably connected to the mounting part.

2. The communication power supply system for container gantry cranes according to claim 1, characterized in that, The semi-enclosed frame also includes a first roller disposed on the first obliquely inward portion and a second roller disposed on the second obliquely inward portion.

3. The communication power supply system for container gantry cranes according to claim 1, characterized in that, The follower part has a first sliding groove on the side frame of the support plate, and the mounting part has a second sliding groove at a position corresponding to the side frame. Limiting posts are provided at both ends of the first cross lifting rod and both ends of the second cross lifting rod. The follower part is slidably connected to the first cross lifting rod and the second cross lifting rod through the first sliding groove, and the mounting part is slidably connected to the first cross lifting rod and the second cross lifting rod through the second sliding groove.

4. The communication power supply system for container gantry cranes according to any one of claims 1 to 3, characterized in that, The system also includes: A buffer mechanism, which is connected to the current collection / communication mechanism and the crane respectively; The buffer mechanism includes: The first connecting part is fixedly connected to the crane; The second connecting part is slidably connected to the first connecting part; An elastic element, one end of which is connected to the first connecting part, and the other end of which is connected to the second connecting part; The third connecting part has one end rotatably connected to the moving part and the other end rotatably connected to the second connecting part. The crane pulls the moving part to slide on the guide rail through the third connecting part.

5. The communication power supply system for container gantry cranes according to claim 4, characterized in that, A first hinge shaft is provided on the bottom surface of the movable part, a second hinge shaft is provided on the second connecting part, the third connecting part is rotatably connected to the movable part through the first hinge shaft, and the third connecting part is connected to the second connecting part through the second hinge shaft.

6. The communication power supply system for container gantry cranes according to claim 5, characterized in that, The buffer mechanism further includes: The first sprocket is sleeved on the first hinge shaft and rotatably connected to the first hinge shaft; The second sprocket is sleeved on the second hinge shaft and is fixedly connected to the second hinge shaft; A chain is mounted on the first sprocket and the second sprocket.

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