A transport structure for a double-girder crane and its accessories

Abstract

The present invention relates to the field of crane technology, and in particular to a transport structure for a double-girder crane and its accessories. An accessory for a transport structure for a double-girder crane is installed on the chain of the transport structure, and includes a first maintenance mechanism and a second maintenance mechanism, wherein the first maintenance mechanism includes a first heating element, a scraper, an oiling element, and a first cooling element. The second maintenance mechanism includes a second heating element, a buffer element, and a second cooling element. The accessory for a transport structure for a double-girder crane of the present invention is provided with a first maintenance mechanism and a second maintenance mechanism, and the first maintenance mechanism is used to maintain the surface of the chain, and the second maintenance mechanism is used to lubricate the connection between two adjacent links on the chain, thereby realizing automatic cleaning and maintenance of the entire chain, slowing down chain wear, and extending the service life of the chain.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a transport structure for a double-girder crane and accessories thereof. Background Art

[0002] Double-girder cranes, with their high stability and strong lifting capacity, are widely used in large industrial and mining enterprises, warehousing and logistics centers, and port terminals. As the core lifting mechanism of double-girder cranes, the reliability of electric hoists directly affects operational safety and efficiency. Chain electric hoists, with their compact structure and excellent impact resistance, are often used in conditions with frequent lifting and limited space.

[0003] However, over long-term operation, chains are susceptible to rust and abrasive wear due to environmental factors such as moisture, dust, and corrosive gases. This is especially true when lifting heavy objects, where the chain links are subjected to tensile loads. The relative sliding of the joints exacerbates fatigue wear on the contact surfaces, leading to thinning of the link walls, reduced strength, and even chain breakage. If the chain accidentally breaks, the hoisted object will fall, potentially damaging it and posing a serious threat to the safety of workers.

[0004] Traditional chain wear typically relies on regular manual visual inspections or magnetic particle inspections, making it difficult to monitor even the slightest wear on chain links. Furthermore, chain lubrication typically involves manual grease application, which is inconvenient at high altitudes or under complex working conditions, and uneven lubrication can further exacerbate wear. Summary of the Invention

[0005] The present invention provides a transport structure for a double-girder crane and accessories thereof, so as to solve the problem that the chain links of the existing double-girder crane cannot be maintained in real time, and cleaning and greasing of the chain links are not timely during use.

[0006] The present invention provides an attachment for a transport structure of a double-girder crane, which adopts the following technical solution: an attachment for a transport structure of a double-girder crane, which is installed on a chain of the transport structure, and includes a first maintenance mechanism and a second maintenance mechanism, the chain can rotate around an axis in a first direction, the first direction being a horizontal direction; the first maintenance mechanism and the second maintenance mechanism are arranged in sequence along the positive rotation direction of the chain, and in the positive rotation direction of the chain, the first maintenance mechanism is located at the rear side of the second maintenance mechanism; the first maintenance mechanism includes a first heating element, a scraper, an oiling element and a second maintenance mechanism arranged in sequence in the vertical direction A cooling member, one end of the chain passes through the first heating member, the scraper, the oiling member and the first cooling member in sequence in the vertical direction; the second maintenance mechanism includes a second heating member, a buffer member and a second cooling member arranged in sequence in the vertical direction; the other end of the chain passes through the second heating member, the buffer member and the second cooling member in sequence in the vertical direction; the first heating member and the second heating member can both heat the chain, the scraper can abut against the surface of the chain, the oiling member is used to oil the chain, and the first cooling member and the second cooling member can both cool the chain; the buffer member can slow down the chain.

[0007] Furthermore, the first heating element, the oiling element, the first cooling element, the second heating element and the second cooling element are all started when the chain rotates forward.

[0008] Furthermore, the first heating element includes a heating chamber, in which a heating wire is arranged; the scraper is located above the heating chamber and fixedly connected to the heating chamber, the scraper is elastic and has a conical structure with a larger upper part and a smaller lower part, and the small end of the scraper is always in contact with the chain surface; the oiling element includes an oiling chamber, which is located above the scraper and fixedly connected to the scraper, the interior of the oiling chamber is filled with lubricating oil, and an oil outlet is opened on the oiling chamber, and the lubricating oil can be sprayed to the chain through the oil outlet; the first cooling element includes a cooling chamber, which is located above the oiling chamber and fixedly connected to the oiling chamber, and a cooling fin is arranged in the cooling chamber.

[0009] Furthermore, the heating chamber, the oiling chamber and the cooling chamber are all provided with through holes that pass through from top to bottom. The through holes are cross-shaped structures, and the chain can pass through the through holes.

[0010] Furthermore, the buffer member includes a buffer plate, the inner wall surface of the buffer plate is a rough surface, and the inner wall surface of the buffer plate can contact the surface of the chain.

[0011] Furthermore, it also includes two rotating plates; one end of the two rotating plates can be installed on the transport structure so as to rotate around the first direction respectively; the other ends of the two rotating plates are respectively provided with a rotating cylinder, and the rotating cylinder can rotate around the first direction along with the rotating plate corresponding to it, and the rotating cylinder can rotate around its own axis relative to the rotating plate corresponding to it; the chain passes through the rotating cylinder and can rotate synchronously with the rotating cylinder, and in the forward rotation direction of the chain, the two rotating cylinders are located between the first cooling element and the second heating element; in the initial state, the rotating plate and the rotating cylinder are both arranged in the vertical direction.

[0012] Furthermore, a limiting hole is provided on the rotating cylinder and passes through the rotating cylinder along its axis direction, and the limiting hole is a cross-shaped structure.

[0013] The present invention also provides a transport structure for a double-beam crane, which is installed on a double-beam body, includes the accessories of the above-mentioned transport structure for a double-beam crane, and also includes a frame and a sprocket; the frame is slidably installed on the double-beam body, the sprocket is arranged along a first direction and can be installed on the frame so as to rotate around its own axis, and the chain is wound around the sprocket.

[0014] Furthermore, an installation box is fixedly provided on the frame, a limit ring is fixedly provided on the installation box, a ring plate is fixedly connected to the scraper, and the ring plate is rotatably matched with the limit ring.

[0015] Furthermore, a driving member is included, which is used to drive the sprocket to rotate around its own axis.

[0016] The beneficial effects of the present invention are as follows: the attachment of the transport structure for a double-girder crane of the present invention is provided with a first maintenance mechanism and a second maintenance mechanism. When the chain rotates through the first maintenance mechanism, the first maintenance mechanism first cleans dust from the chain surface and then re-lubricates it, maintaining a continuous and stable lubrication effect. After the chain surface is maintained, when the chain rotates through the second maintenance mechanism, the second maintenance mechanism lubricates the connection between two adjacent chain links, achieving automatic cleaning and maintenance of the entire chain, reducing chain wear and extending the chain service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a diagram showing a state in which the overall structure of a transport structure for a double-girder crane and its accessories of the present invention is installed on a double-girder body;

[0019] Figure 2 A schematic diagram of the overall structure of a transport structure for a double-girder crane and its accessories according to the present invention;

[0020] Figure 3 It is a schematic diagram of the overall structure of a transport structure for a double-girder crane and its accessories of the present invention from another perspective;

[0021] Figure 4 A cross-sectional view of the overall structure of a transport structure for a double-girder crane and its accessories according to the present invention;

[0022] Figure 5 for Figure 4 Cross-sectional view at point A;

[0023] Figure 6 for Figure 4 Cross-sectional view at point B;

[0024] Figure 7 A cross-sectional view of the overall structure of a double-girder crane transport structure and its accessories according to the present invention from another perspective;

[0025] Figure 8 A schematic diagram of a scraper and a ring plate in an embodiment of an accessory of a transport structure for a double-girder crane of the present invention;

[0026] Figure 9 A schematic diagram of an oil injection chamber in an embodiment of an accessory for a transport structure for a double-girder crane according to the present invention;

[0027] Figure 10 It is a schematic diagram of a face-changing assembly in an embodiment of an accessory of a transport structure for a double-girder crane of the present invention.

[0028] In the figure: 100, first maintenance mechanism; 110, heating chamber; 111, heating wire; 120, scraper; 121, ring plate; 130, oiling chamber; 131, piston plate; 132, first chamber; 133, second chamber; 134, two-way hole; 135, oil outlet hole; 140, cooling chamber; 141, cooling fin; 142, heat sink; 150, through hole; 160, transmission member; 161, transmission motor; 162, main gear; 163, transmission wheel; 164, driven gear; 170, rotating plate; 171, rotating motor; 172, rotating gear; 180, rotating cylinder ;181. Limiting hole;182. Matching gear;200. Second maintenance mechanism;210. Second heating element;220. Buffer plate;230. Second cooling element;300. Transport structure;310. Chain;311. First link;312. Second link;320. Frame;330. Sprocket;331. Wheel plate;340. Installation box;341. Limiting ring;350. Driving element;351. Main motor;352. First wheel;353. Second wheel;354. Third wheel;355. Fourth wheel;356. First link chain;357. Second link chain;400. Double beam body. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] The present invention provides an embodiment of a transport structure for a double-girder crane and its accessories, such as Figures 1 to 10 shown.

[0031] An accessory for a transport structure of a double-girder crane is mounted on a chain 310 of the transport structure 300 and includes a first maintenance mechanism 100 and a second maintenance mechanism 200. The chain 310 is capable of rotating about an axis in a first direction, which is horizontal. The first maintenance mechanism 100 and the second maintenance mechanism 200 are arranged sequentially along the forward rotation direction of the chain 310. In the forward rotation direction of the chain 310, the first maintenance mechanism 100 is located behind the second maintenance mechanism 200. Forward rotation of the chain 310 allows the hoisted object to be moved upward.

[0032] Forward rotation is Figure 4 The chain 310 moves upwards and drives the hoisted object upwards. The direction of the chain 310 that is closer to the rotation arrow is called the front direction, and the direction that is away from the rotation arrow is called the rear direction.

[0033] The first curing mechanism 100 includes a first heating element, a scraper 120, an oiling element, and a first cooling element arranged in sequence in a vertical direction. One end of a chain 310 vertically passes through the first heating element, scraper 120, oiling element, and first cooling element. The second curing mechanism 200 includes a second heating element 210, a buffer element, and a second cooling element 230, also arranged in sequence in a vertical direction. The other end of the chain 310 vertically passes through the second heating element 210, the buffer element, and the second cooling element 230.

[0034] The first heating element and the second heating element 210 can both heat the chain 310, the scraper 120 can contact the surface of the chain 310, the oiling element is used to oil the chain 310, and the first cooling element and the second cooling element 230 can both cool the chain 310. The buffer element can decelerate the chain 310.

[0035] The first heating element, the oiling element, the first cooling element, the second heating element 210 and the second cooling element 230 are all started when the chain 310 rotates forward.

[0036] In this embodiment, a first curing mechanism 100 and a second curing mechanism 200 are provided. When in use, the driving chain 310 rotates forward, and the forward rotation of the chain 310 will drive the hoisted object to move upward. Since the first curing mechanism 100 is located on the rear side of the second curing mechanism 200 in the forward rotation direction of the chain 310, as the chain 310 rotates, the end of the chain 310 connected to the hoisted object will pass through the first heating element, the scraper 120, the oiling element, the first cooling element, the second heating element 210, the buffer element and the second cooling element 230 in sequence.

[0037] Taking a link on chain 310 as an example, as the link passes from bottom to top through the first heating element, it activates and heats the link, softening the lubricant on it. The link then passes through scraper 120, which contacts the link's surface and, as the link moves, scrapes away the softened lubricant. The link then passes through the oil sprayer, which re-sprays the link with oil. Finally, the link passes through the first cooling element, which cools the link and solidifies the lubricant. At this point, the first curing mechanism 100 has completed curing the link's surface.

[0038] After passing through the first curing mechanism 100, the chain link will reach the second heating element 210 of the second curing mechanism 200. At this point, the lubricant on the surface of the cured chain link will soften again. The chain link will then move downward into the buffer, where it will be decelerated. At this point, the other chain link nested with the chain link will move relative to it. That is, the chain link located above the chain link will move downward relative to it, temporarily disconnecting the connection between the two chain links. The lubricant on the chain link will then flow to the connection between the two chain links, lubricating the contact surface between the two chain links. Finally, the chain link will reach the second cooling element 230, which will cool the chain link and solidify the lubricant. At this point, the second curing mechanism 200 has completed curing the connection between the two chain links.

[0039] Specifically, when the chain 310 rotates through the first maintenance mechanism 100, it first cleans dust from the surface of the chain 310 and then re-lubricates it, maintaining a continuous and stable lubrication effect. After the surface of the chain 310 is maintained, when the chain 310 rotates through the second maintenance mechanism 200, the second maintenance mechanism 200 lubricates the connection between two adjacent links on the chain 310. This automatically cleans and maintains the entire chain 310, reducing wear on the chain 310 and extending its service life.

[0040] In a further embodiment, the first heating element includes a heating chamber 110, in which a heating wire 111 is disposed. A scraper 120 is located above and fixedly connected to the heating chamber 110. The scraper 120 is elastic and has a tapered structure with a larger upper portion and a smaller lower portion. The small end of the scraper 120 always abuts against the surface of the chain 310, so that when the chain 310 moves upward relative to the scraper 120, the scraper 120 can scrape off lubricating oil adhering to the links of the chain 310.

[0041] The oiling member includes an oiling chamber 130 , which is located above and fixed to the scraper 120 . The oiling chamber 130 is filled with lubricating oil and has an oil outlet 135 formed therein, through which the lubricating oil can be sprayed toward the chain 310 .

[0042] The first cooling member includes a cooling chamber 140, which is located above the oiling chamber 130 and fixedly connected to the oiling chamber 130. Cooling fins 141 are arranged in the cooling chamber 140, and heat dissipation fins 142 are uniformly distributed on the outer peripheral wall surface of the cooling chamber 140.

[0043] The structure of the second heating element 210 is the same as that of the first heating element, and the structure of the second cooling element 230 is the same as that of the first cooling element, which will not be elaborated here.

[0044] Furthermore, the heating chamber 110, the oiling chamber 130, and the cooling chamber 140 are each provided with a through hole 150 extending vertically therethrough. The through hole 150 is a cross-shaped structure, and the chain 310 can pass through the through hole 150. The through hole 150 can limit the movement of the chain 310 and prevent the chain 310 from twisting.

[0045] A piston plate 131 is disposed within the oiling chamber 130. The piston plate 131 slides and seals against the inner wall of the oiling chamber 130, dividing the oiling chamber 130 into a first chamber 132 and a second chamber 133. The first chamber 132 is located above the second chamber 133. A bidirectional hole 134 is defined in the first chamber 132, an oil inlet is defined in the second chamber 133, and an oil outlet 135 is defined in the second chamber 133. Both the bidirectional hole 134 and the oil inlet are connected to an external oil pump, while the oil outlet 135 communicates with a through hole 150 in the oiling chamber 130.

[0046] Furthermore, the chain 310 includes multiple first links 311 and multiple second links 312, both of which are elliptical metal rings, and the first links 311 and the second links 312 are alternately distributed in sequence, and any two adjacent first links 311 and second links 312 are perpendicular to each other and nested in each other.

[0047] Alternatively, eight oil outlet holes 135 are provided, four of which correspond to the first link 311, and the other four correspond to the second link 312. The oil outlet holes 135 corresponding to the first link 311 are all oriented toward the straight edge of the first link 311, and the oil outlet holes 135 corresponding to the second link 312 are all oriented toward the straight edge of the second link 312. By adjusting the number and orientation of the oil outlet holes 135, the uniformity of oil application is further improved.

[0048] This embodiment is coordinated by providing a heating chamber 110, a scraper 120, an oiling chamber 130, and a cooling chamber 140. During the forward rotation of the chain 310, the chain links on the chain 310 will first enter the heating chamber 110. At this time, the heating chamber 110 is activated and the chain links are heated by the heating wire 111, so that the lubricating oil on the chain links is softened. The chain links then enter the scraper 120, which will contact the surface of the chain links and scrape off the softened lubricating oil on the chain link surfaces as the chain links move. The chain links then pass through the oil spraying chamber, and the lubricating oil in the oil spraying chamber is sprayed onto the chain 310 through the oil outlet 135. Finally, the chain links enter the cooling chamber 140, where the cooling fins 141 are used to cool the chain links, solidifying the lubricating oil and maintaining the chain link surfaces.

[0049] In a further embodiment, the buffer member includes two buffer plates 220 , and the inner wall surfaces of the buffer plates 220 are rough surfaces. The inner wall surfaces of the buffer plates 220 can contact the surface of the chain 310 .

[0050] Alternatively, the buffer can decelerate the first link 311 or the second link 312. The buffer plate 220 is provided in a one-to-one correspondence with the straight edge of the first link 311 or the straight edge of the second link 312 and can contact the corresponding straight edge of the first link 311 or the straight edge of the second link 312.

[0051] By making the inner wall surface of the buffer plate 220 rough, when the first link 311 or the second link 312 contacts the inner wall surface of the buffer plate 220 during the rotation of the chain 310, the moving speed of the first link 311 or the second link 312 will decrease due to the action of friction resistance.

[0052] See also Figure 5 As shown, the following example illustrates a case where the first link 311 contacts the inner circumferential surface of the buffer plate 220, while the second link 312 does not. The two first links 311 connected to the second link 312 are referred to as link number one and link number two, respectively. The first link, the second link 312, and the second link are arranged in sequence in the vertical direction, with the first link above the second link 312 and the second link below it.

[0053] When the two straight edges of the second link contact the inner circumference of the buffer plate 220, the movement speed of the second link decreases, while the movement speed of the second link 312 above it remains unchanged. In other words, the second link 312 moves downward relative to the second link, temporarily disconnecting the connection between the two. The softened lubricant on the second link 312 then flows to the connection, completing lubrication of the connection between the second link 312 and the second link.

[0054] After the second link 312 moves downward and contacts another second link 312 below the No. 2 link, that is, when the second link 312 contacts another second link 312 spaced apart below it, the No. 1 link will move downward relative to the adjacent second link 312 below it, so that the connection between the two is temporarily disengaged, and the softened lubricating oil on the No. 1 link will come to the connection between the two, completing the lubrication of the connection between the second link 312 and the No. 1 link.

[0055] By providing the buffer plate 220 , the connection between the adjacent first link 311 and the second link 312 can be lubricated during the rotation of the chain 310 .

[0056] It should be noted that when the first link 311 passes through the buffer plate 220, the buffer plate 220 will not scrape off the softened lubricating oil on the first link 311. The first link 311 will move along the buffer plate 220. That is, the space defined by the two buffer plates 220 allows the chain 310 coated with lubricating oil to pass through.

[0057] In another possible embodiment, an accessory of a transport structure for a double-girder crane further includes a surface changing assembly, which is used to rotate the chain 310 180° around its own axis to change the contact friction surface of the chain 310 .

[0058] The resurfacing assembly includes a transmission member 160 and two rotating plates 170. One end of each rotating plate 170 is mounted on the transport structure 300 so as to be rotatable about a first direction. The two rotating plates 170 are arranged side by side on the transport structure 300 along a second direction, which is horizontal and perpendicular to the first direction. A rotating cylinder 180 is mounted on the other end of each rotating plate 170. The rotating cylinder 180 is capable of orbiting and rotating along with the corresponding rotating plate 170 about the first direction and can also rotate about its own axis relative to the corresponding rotating plate 170.

[0059] The chain 310 passes through the rotating drum 180 and can rotate synchronously with the rotating drum 180, and in the forward rotation direction of the chain 310, the two rotating drums 180 are located between the first cooling member and the second heating member 210; in the initial state, the rotating plate 170 and the rotating drum 180 are both arranged in the vertical direction.

[0060] The transmission member 160 is used to drive the two rotating plates 170 to rotate in a first direction. The transmission member 160 includes a transmission motor 161, a main gear 162, and a transmission wheel 163. The transmission motor 161 is mounted on the transport structure 300. The main gear 162 is arranged along the first direction and fixedly mounted on the output shaft of the transmission motor 161. The transmission wheel 163 is arranged along the first direction and meshes with the main gear 162. A driven gear 164 is fixedly connected to each of the two rotating plates 170. The driven gears 164 are arranged along the first direction, one of which is fixedly connected to the transmission wheel 163, and the two driven gears 164 mesh with each other.

[0061] Specifically, a rotating motor 171 is provided on the rotating plate 170, and a rotating gear 172 is fixedly provided on the output end of the rotating motor 171. The rotating cylinder 180 rotates in coordination with the rotating plate 170. A mating gear 182 is coaxially and fixedly connected to the rotating cylinder 180, and the mating gear 182 is engaged with the rotating gear 172, so that the rotating cylinder 180 can revolve and rotate around the first direction along with the rotating plate 170 corresponding to it, and the rotating cylinder 180 can rotate around its own axis relative to the rotating plate 170 corresponding to it.

[0062] Specifically, the rotating cylinder 180 is provided with a limiting hole 181 penetrating along the axial direction thereof, and the limiting hole 181 is a cross-shaped structure.

[0063] By providing the limiting hole 181 , the chain 310 can move in the axial direction of the limiting hole 181 . When the rotating cylinder 180 rotates along with the rotating plate 170 , the chain 310 will also be driven by the rotating cylinder 180 to revolve around the first direction.

[0064] During use, the transmission motor 161 is started. The transmission motor 161 will drive the transmission wheel 163 to rotate through the main gear 162. The rotation of the transmission wheel 163 will drive a driven gear 164 fixed thereto to rotate, and finally the two driven gears 164 will rotate. The rotation of the two driven gears 164 will respectively drive the rotating plate 170 fixed thereto to revolve around the first direction, and drive the chain 310 through the rotating cylinder 180, so that the two ends of the chain 310 move away from each other around the first direction and gradually straighten.

[0065] After the chain 310 is straightened, the rotating motor 171 is started. The rotating motor 171 will drive the rotating gear 172 to rotate. The rotating gear 172 will drive the rotating cylinder 180 to rotate through the matching gear 182. The rotation of the rotating cylinder 180 will drive the chain 310 to rotate, and the chain 310 will be driven to rotate 180° through the rotating cylinder 180, thereby changing the contact surface of the chain 310 that is in direct contact with the transport structure 300, improving the uniformity of the wear of the chain 310, and extending the service life of the chain 310.

[0066] In combination with the above embodiment, the specific working process is as follows:

[0067] During use, the drive chain 310 rotates forwardly around the axis of the first direction. During the forward rotation of the chain 310, the chain links on the chain 310 will first enter the heating chamber 110. At this time, the heating chamber 110 is activated and the chain links are heated by the heating wire 111 to soften the lubricating oil on the chain links. The chain links then enter the scraper 120. The scraper 120 will contact the surface of the chain links and scrape off the softened lubricating oil on the chain link surface as the chain links move. The chain links then pass through the oil spray chamber. The lubricating oil in the oil spray chamber is sprayed onto the chain 310 through the oil outlet 135. Finally, the chain links enter the cooling chamber 140. The cooling fins 141 are used to cool the chain links, solidifying the lubricating oil and maintaining the surface of the chain links.

[0068] The chain link then comes to the second heating element 210 of the second curing mechanism 200, where the lubricating oil on the surface of the cured chain link will soften again. Figure 5As shown, the following example illustrates a case where the first link 311 contacts the inner circumferential surface of the buffer plate 220, while the second link 312 does not. The two first links 311 connected to the second link 312 are referred to as link number one and link number two, respectively. The first link, the second link 312, and the second link are arranged in sequence in the vertical direction, with the first link above the second link 312 and the second link below it.

[0069] When the two straight edges of the second link contact the inner circumference of the buffer plate 220, the movement speed of the second link decreases, while the movement speed of the second link 312 above it remains unchanged. In other words, the second link 312 moves downward relative to the second link, temporarily disconnecting the connection between the two. The softened lubricant on the second link 312 then flows to the connection, completing lubrication of the connection between the second link 312 and the second link.

[0070] After the second link 312 moves downward and contacts another second link 312 below the No. 2 link, that is, when the second link 312 contacts another second link 312 spaced apart below it, the No. 1 link will move downward relative to the adjacent second link 312 below it, so that the connection between the two is temporarily disengaged, and the softened lubricating oil on the No. 1 link will come to the connection between the two, completing the lubrication of the connection between the second link 312 and the No. 1 link.

[0071] By providing the buffer plate 220 , the connection between the adjacent first link 311 and the second link 312 can be lubricated during the rotation of the chain 310 .

[0072] Finally, the chain link will reach the second cooling member 230, which will cool the chain link to solidify the lubricating oil. At this time, the second maintenance mechanism 200 has completed the maintenance of the connection between the two chain links.

[0073] The present invention also provides a double-girder crane transport structure, mounted on a double-girder crane body 400. The structure includes the aforementioned accessories for the double-girder crane transport structure, a frame 320, and a sprocket 330. The frame 320 is slidably mounted on the double-girder crane body 400. The sprocket 330 is arranged along a first direction and is rotatably mounted on the frame 320 about its axis. A chain 310 is wound around the sprocket 330, with both ends of the chain 310 initially facing downward. A transmission motor 161 is mounted on the frame 320.

[0074] The frame 320 is fixedly provided with an installation box 340 , and the end of the chain 310 that is not connected to the hoisted object extends downward into the installation box 340 .

[0075] Furthermore, a limiting ring 341 is fixedly provided on the mounting box 340 , and a ring plate 121 is coaxially and fixedly connected to one side of the large end of the scraper 120 . The ring plate 121 and the scraper 120 are an integrally formed structure, and the ring plate 121 and the limiting ring 341 are rotatably matched.

[0076] By providing the ring plate 121 to rotate with the limiting ring 341 , the movement of the first curing mechanism 100 is restricted, while the rotation of the first curing mechanism 100 is allowed.

[0077] In the prior art, a plurality of first grooves and a plurality of second grooves are formed on the sprocket 330 along a first direction, and the first grooves and the second grooves are alternately distributed along the first direction. The first grooves and the second grooves are both arranged along the tangential direction of the sprocket 330. The first grooves are located on the side of the second groove in the radial direction of the sprocket 330 that is closer to the central axis of the sprocket 330. The first grooves are arranged in a one-to-one correspondence with the first chain links 311, and the second grooves are arranged in a one-to-one correspondence with the second chain links 312. When the sprocket 330 drives the chain 310 to rotate, the second chain links 312 are always in contact with the surface of the sprocket 330, and the first chain links 311 are supported by the second chain links 312 and do not contact the surface of the sprocket 330.

[0078] That is, for the entire chain 310, the second link 312 is more susceptible to wear than the first link 311. Therefore, during operation, only the oil holes 135 corresponding to the side of the second link 312 that contacts the sprocket 330 can be activated to spray oil on the surface of the second link 312. Alternatively, during each lift, the oil holes 135 corresponding to the second link 312 can be activated, while the oil holes 135 corresponding to the first link 311 can be activated intermittently. This lubrication method can save oil.

[0079] After the chain 310 is straightened, the rotating drum 180 drives the chain 310 to rotate 180 degrees, changing the contact surface between the second link 312 on the chain 310 and the sprocket 330, improving the uniformity of the overall wear of the chain 310, and extending the service life of the chain 310.

[0080] Furthermore, a wheel plate 331 is provided at each end of the sprocket 330 in the first direction. The two wheel plates 331 are locked to the frame 320 by bolts. The sprocket 330 and the wheel plates 331 are rotatably engaged. A gap is defined between the two wheel plates 331 and the sprocket 330 for mounting the rotating plate 170. The rotating plate 170 and the wheel plates 331 are rotatably engaged. That is, the wheel plates 331 are stationary, while the sprocket 330 and the rotating plate 170 can each rotate relative to the wheel plates 331.

[0081] In a further embodiment, the transport structure for a double-girder crane further includes a driving member 350 , and the driving member 350 is used to drive the sprocket 330 to rotate around its own axis.

[0082] The drive member 350 is conventional and includes a main motor 351 and a first wheel 352. The first wheel 352 is fixedly mounted to the output end of the main motor 351. A second wheel 353 is rotatably mounted on the frame 320. Both the first and second wheels 352, 353 are arranged in a first direction and are connected by a first chain 356. A third wheel 354 is coaxially and fixedly mounted on the second wheel 353. The second and third wheels 353, 354 are sequentially arranged in the first direction and coaxially mounted on the frame 320. Both wheels 353, 354 rotate in conjunction with the frame 320 and are fixedly connected. A fourth wheel 355 is coaxially and fixedly mounted on the sprocket 330. The third and fourth wheels 354, 355, are connected by a second chain 357. The diameter of the fourth wheel 355 is larger than that of the first wheel 352.

[0083] By providing the driving member 350, when in use, the main motor 351 is started to drive the first wheel 352 to rotate, which in turn drives the second wheel 353 to rotate via the first chain 356. The rotation of the second wheel 353 drives the third wheel 354 to rotate, which in turn drives the fourth wheel 355 to rotate via the second chain 357. The rotation of the fourth wheel 355 drives the sprocket 330 to rotate, allowing the sprocket 330 to rotate. The transmission method of the first wheel 352, the second wheel 353, the third wheel 354, and the fourth wheel 355 can achieve the effect of reducing speed and increasing torque.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An accessory for a transport structure of a double-girder crane, mounted on a chain of the transport structure, characterized in that: The chain comprises a first maintenance mechanism and a second maintenance mechanism, wherein the chain is capable of rotating around an axis in a first direction, the first direction being a horizontal direction; the first maintenance mechanism and the second maintenance mechanism are sequentially arranged along the forward rotation direction of the chain, and in the forward rotation direction of the chain, the first maintenance mechanism is located behind the second maintenance mechanism; the first maintenance mechanism comprises a first heating element, a scraper, an oiling element, and a first cooling element sequentially arranged in a vertical direction, and one end of the chain passes through the first heating element, the scraper, the oiling element, and the first cooling element sequentially in the vertical direction; the second maintenance mechanism comprises a second heating element, a buffer element, and a second cooling element sequentially arranged in the vertical direction; the other end of the chain passes through the second heating element, the buffer element, and the second cooling element sequentially in the vertical direction; The first heating element and the second heating element can both heat the chain, the scraper can abut against the surface of the chain, the oiling element is used to oil the chain, the first cooling element and the second cooling element can both cool the chain; the buffer element can slow down the chain.

2. The attachment for the transport structure of a double-girder crane according to claim 1, characterized in that: The first heating element, the oiling element, the first cooling element, the second heating element and the second cooling element are all started when the chain rotates forward.

3. The attachment for the transport structure of a double-girder crane according to claim 2, characterized in that: The first heating element includes a heating chamber, in which a heating wire is arranged; the scraper is located above the heating chamber and fixedly connected to the heating chamber, the scraper is elastic and has a conical structure with a larger upper part and a smaller lower part, and the small end of the scraper is always in contact with the chain surface; the oiling element includes an oiling chamber, which is located above the scraper and fixedly connected to the scraper, the interior of the oiling chamber is filled with lubricating oil, and an oil outlet hole is opened on the oiling chamber, and the lubricating oil can be sprayed onto the chain through the oil outlet hole; the first cooling element includes a cooling chamber, which is located above the oiling chamber and fixedly connected to the oiling chamber, and a cooling fin is arranged in the cooling chamber.

4. The attachment for the transport structure of a double-girder crane according to claim 3, characterized in that: The heating chamber, the oiling chamber and the cooling chamber are all provided with through holes which penetrate from top to bottom. The through holes are cross-shaped structures and the chains can pass through the through holes.

5. The attachment for the transport structure of a double-girder crane according to claim 3, characterized in that: The buffer member comprises a buffer plate, the inner wall surface of the buffer plate is a rough surface, and the inner wall surface of the buffer plate can contact the surface of the chain.

6. The attachment for the transport structure of a double-girder crane according to claim 1, characterized in that: It also includes two rotating plates; one end of the two rotating plates can be installed on the transport structure so as to rotate around a first direction respectively; the other ends of the two rotating plates are respectively provided with a rotating cylinder, which can rotate around the first direction along with the rotating plate corresponding to it, and the rotating cylinder can rotate around its own axis relative to the rotating plate corresponding to it; the chain passes through the rotating cylinder and can rotate synchronously with the rotating cylinder, and in the forward rotation direction of the chain, the two rotating cylinders are located between the first cooling element and the second heating element; in the initial state, the rotating plate and the rotating cylinder are both arranged in the vertical direction.

7. The attachment for the transport structure of a double-girder crane according to claim 6, characterized in that: The rotating cylinder is provided with a limiting hole which passes through along the axis direction thereof, and the limiting hole is a cross-shaped structure.

8. A transport structure for a double-girder crane, mounted on a double-girder body, comprising the attachment for the transport structure for a double-girder crane according to any one of claims 1 to 7, characterized in that: It also includes a frame and a sprocket; the frame is slidably mounted on the double-beam body, the sprocket is arranged along a first direction and is rotatably mounted on the frame around its own axis, and the chain is wound around the sprocket.

9. The transport structure for a double-girder crane according to claim 8, characterized in that: An installation box is fixedly arranged on the frame body, a limit ring is fixedly arranged on the installation box, a ring plate is fixedly connected on the scraper, and the ring plate and the limit ring are rotatably matched.

10. The transport structure for a double-girder crane according to claim 8, characterized in that: The utility model further comprises a driving member, which is used for driving the sprocket to rotate around its own axis.

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