A crane hoisting adjustment device

Abstract

The application discloses a crane lifting adjusting device and relates to the technical field of building hoisting technology.The crane lifting adjusting device comprises an adjusting fixing frame, a power assembly and a suction disc assembly arranged at the bottom of the adjusting fixing frame, the suction disc assembly is symmetrically arranged on the two sides of the adjusting fixing frame, the adjusting fixing frame comprises a suction disc lower frame, the power assembly comprises an electric push rod, the suction disc assembly comprises an outer suction disc, the outer suction disc comprises an outer lateral wall and an inner lateral wall, an annular cavity is formed between the outer lateral wall and the inner lateral wall, and the cavity can be filled with cooling liquid; the thickness of the outer lateral wall is 1.5 to 2 times that of the inner lateral wall, so that the cooling liquid in the cavity can cool the inner lateral wall of the suction disc while increasing the structural strength; the suction disc lower frame is fixedly connected with the outer suction disc through a connecting piece, the outer suction disc can be adsorbed on the surface of an aluminum plate by being pressed down by the suction disc lower frame; and the temperature of the contact part between the rubber suction disc and the aluminum plate can be reduced, so that the technical effect that the rubber softens and is embedded into the particulate matter can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building hoisting, in particular to a crane hoisting adjusting device. BACKGROUND

[0002] The sucker is the sucking organ of animals, generally in the form of a round, concave disc. The sucker has the functions of adsorption, feeding and movement. According to the characteristics of animals, a vacuum sucker, also known as a vacuum lifting device, is invented, which is one of the vacuum equipment actuators. The sucker is made of nitrile rubber and has a large tensile force, so it is widely used in various vacuum holding devices. The vacuum sucker is a technology that maintains the adhesion of two objects by vacuum degree. In industry, the "pick up" and "put down" during the process of moving and transferring are realized by changing the vacuum degree of the sucker, and automation and mechanization are realized. In the process of using at high temperature, the sucker will gradually deform when stretched, but the rubber product will also cause slight deformation as the temperature adapts and drops.

[0003] For example, the existing lifting adjusting device CN110668297B uses a sucker to realize the hoisting function. In a high-temperature outdoor environment, the temperature of the aluminum plate after being exposed to the sun is high, and the surface of the aluminum plate is covered with dust particles in an outdoor construction site environment. Although rubber can withstand high temperatures, the rubber at the contact part with the high-temperature aluminum plate will slightly deform and soften during work. The dust particles on the surface of the aluminum plate are embedded in the surface of the rubber sucker. After a long time of work, the rubber sucker embedded with too many particles will affect the sealing performance of the sucker and cause the danger of separation from the aluminum plate. SUMMARY

[0004] The present application provides a crane hoisting adjusting device, which solves the technical problem that the rubber sucker is easily embedded with particles at the contact part with the outdoor high-temperature aluminum plate, thereby affecting the sealing performance and causing separation from the aluminum plate. The present application reduces the temperature at the contact part of the rubber sucker and the aluminum plate, thereby avoiding the softening of the rubber and the embedding of particles.

[0005] The present application provides a crane hoisting adjusting device, which includes an adjusting fixed frame, a power assembly, and a sucker assembly located at the bottom of the adjusting fixed frame. The sucker assembly is symmetrically arranged on both sides of the adjusting fixed frame. The adjusting fixed frame includes a sucker lower frame. The power assembly includes an electric push rod,

[0006] characterized in that,

[0007] The sucker assembly includes an outer sucker, which includes an outer sidewall and an inner sidewall. An annular cavity is formed between the inner and outer sidewalls, and the cavity can be filled with cooling liquid. The thickness of the outer sidewall is 1.5 to 2 times that of the inner sidewall, which can cool the inner sidewall of the sucker while increasing the structural strength of the cavity.

[0008] The lower suction frame is fixedly connected with the outer suction disc through a connecting member, and the outer suction disc can be adsorbed on the surface of the aluminum plate by the lower suction frame.

[0009] Preferably, the outer suction disc is divided into a rubber dome, a ring-shaped hollow body and a rubber ring from top to bottom.

[0010] The rubber dome is located at the top of the outer suction disc and protrudes upward, and is made of elastic rubber material and can be deformed toward the bottom of the suction disc.

[0011] The ring-shaped hollow body is a ring-shaped hard structure with openings at the top and bottom, and the opening at the top is smaller than the opening at the bottom. The side wall has a cavity, and the ring-shaped hollow body is located at the middle position of the suction disc. The top port is fixedly connected with the rubber dome.

[0012] The rubber ring is a ring-shaped structure with openings at the top and bottom and a cavity inside. The rubber ring is made of rubber material, and the top is fixedly connected with the ring-shaped hollow body. The lower port is larger than the upper port, and the lower port edge extends outward to the outside of the outer suction disc.

[0013] Preferably, the power assembly further comprises a piston assembly, and the piston assembly comprises a piston rod, a piston head and a piston cylinder.

[0014] The piston rod is a hard rod at the end of the electric push rod, and the end is fixed with the piston head. The piston head is tightly matched with the piston cylinder to form a sealed space. The piston cylinder is fixedly connected with the lower suction frame and has a tubular structure with openings at both ends. The end close to the electric push rod is the entrance of the piston rod, and the other end is provided with a channel outlet leading to a direction perpendicular to the side surface of the piston cylinder.

[0015] The outer suction disc further comprises a gas channel, which is a hollow rod structure with openings at both ends. The bottom penetrates the ring-shaped hollow body and is fixedly connected with the ring-shaped hollow body. The top end is fixedly connected with the channel outlet of the piston cylinder. The piston cylinder can suck the air inside the outer suction disc, and the air inside the piston cylinder can also be pushed into the outer suction disc.

[0016] Preferably, the connecting member between the outer suction disc and the lower suction frame is a hollow handle, which is an arc-shaped handle structure made of hard material and has a hollow cavity with openings at both ends. One end is fixed to the outer side surface of the ring-shaped hollow body, and the other end is fixed to the lower suction frame, so that the lower suction frame can press down the outer suction disc through the hollow handle.

[0017] Preferably, the lower suction frame is a hollow rectangular structure that can store liquid. The lower suction frame is fixedly connected to the lower end surface of the third support through the connecting member. The top includes an openable and closable liquid injection port, and the cooling liquid can be injected into the cavity through the liquid injection port. Preferably, the cavities of the lower suction frame, the hollow handle, the ring-shaped hollow body and the rubber ring are connected to form a closed space for filling cooling liquid.

[0018] Preferably, the suction cup assembly further comprises an inner suction cup, which is located in the space below the outer suction cup, is fixedly connected to the lower end surface of the suction cup lower frame through a hollow tube, the hollow tube is a tubular structure with open upper and lower ends, is made of hard material, can press down the top of the inner suction cup to make the air pressure below the inner suction cup lower than the air pressure inside the outer suction cup, so that the inner suction cup is adsorbed to the surface of the aluminum plate, the upper end of the hollow tube penetrates through the lower end surface of the suction cup lower frame, is fixedly connected to the inner cavity of the suction cup lower frame, the lower end penetrates through the rubber dome and is fixedly connected to the top of the inner suction cup, and the top of the inner suction cup is on the same horizontal line with the top of the rubber ring.

[0019] Preferably, the liquid outlet control assembly further comprises a gear valve and a liquid outlet base, the liquid outlet base is a cylindrical structure with an open bottom, the bottom of the liquid outlet base is fixedly connected to the top end of the hollow tube, the top end of the liquid outlet base is provided with a ring-shaped protrusion, the bottom of the ring-shaped protrusion is provided with a ring-shaped groove which is open radially inward, the top of the liquid outlet base is provided with a first fan-shaped hole which is a quarter of a fan-shaped through hole, and the intersection of the straight edges of the first fan-shaped hole is located on the axis of the liquid outlet base; the gear valve is a cylindrical structure, the diameter of the gear valve is smaller than that of the liquid outlet base, the gear valve can be inserted into the ring-shaped protrusion of the liquid outlet base, the bottom of the gear valve is provided with a ring-shaped protrusion which extends radially outward, the ring-shaped protrusion of the gear valve is in close fit with the ring-shaped groove, the gear valve is coaxial with the liquid outlet base, the gear valve and the liquid outlet base are rotatably connected, the gear valve is provided with a second fan-shaped hole which is the same as the first fan-shaped hole, the second fan-shaped hole is a quarter of a fan-shaped through hole, the intersection of the straight edges of the second fan-shaped hole is located on the axis of the liquid outlet base, and the top of the gear valve is fixedly connected to a ring of gears.

[0020] Preferably, the power assembly further comprises a rack rod, the rack rod is a branch at the end of the electric push rod, the front end of the rack rod is provided with a tooth which is matched with the gear of the gear valve, the rack rod can drive the gear valve to rotate when the electric push rod is pushed or pulled, when the piston head is located at the two ends of the piston cylinder, the two fan-shaped holes do not intersect and do not coincide, when the two fan-shaped holes intersect or coincide, the cooling liquid can flow into the space below the inner suction cup through the hollow tube from the two fan-shaped holes.

[0021] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0022] By arranging the cavity in the outer suction cup and filling the cavity with cooling liquid, the heat of the contact part between the outer suction cup and the aluminum plate with dust particles in a high temperature state is shared, so that the outer suction cup is not easy to soften and deform, thereby achieving the technical effect of avoiding the embedding and adhesion of particulate matter to the rubber suction cup to a certain extent.

[0023] By arranging the ring-shaped hollow body in the outer suction cup, the suction cup is more solid and durable, and the internal space of the suction cup can be stably formed, thereby reducing the irregular deformation of the suction cup due to the cavity in the suction cup.

[0024] By setting the piston assembly, the suction cup is changed from the downward pressing type to the suction type, a pressure difference is better formed with external air, meanwhile, the technical problem that the annular hollow body is hard and inconvenient to press downward to form a pressure difference is solved, and the technical effect of stably forming a pressure difference is achieved.

[0025] By setting the suction cup lower frame as hollow, and the cavities of the suction cup lower frame, the hollow handle, the annular hollow body and the rubber ring are communicated with each other to form an overall closed cavity, more cooling liquid can be stored, the cooling liquid in the device can share more heat when the device is replaced with the cooling liquid, and the technical effect of enhancing the continuous working time of the device is achieved.

[0026] In actual operation, it is found that the problems in the above-mentioned embodiment one can be improved, such as the smaller contact surface between the outer suction cup and the aluminum plate, when there are more dust particles, the outer suction cup may be at risk of warping and falling off, therefore, the inner suction cup is set, the inner suction cup is set to discharge water at the bottom, so that the inner suction cup is more firmly contacted with the aluminum plate, and the technical effect of enhancing the suction force of the device in the vertical direction of the aluminum plate is achieved, and the setting of the inner suction cup achieves the technical effect of avoiding the unfirm adsorption of the outer suction cup. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a whole device overhead view structure schematic diagram of a crane lifting adjusting device

[0028] Figure 2 It is a whole device side structure schematic diagram of a crane lifting adjusting device

[0029] Figure 3 It is a suction cup side structure schematic diagram of a crane lifting adjusting device

[0030] Figure 4 It is a hollow handle layer sectional structure schematic diagram of a suction cup of a crane lifting adjusting device

[0031] Figure 5 It is a piston assembly layer sectional structure schematic diagram of a crane lifting adjusting device

[0032] Figure 6 It is a liquid outlet control assembly structure schematic diagram of a crane lifting adjusting device

[0033] Figure 7 It is a liquid outlet base top structure schematic diagram of a crane lifting adjusting device

[0034] Figure 8 It is a liquid outlet base bottom structure schematic diagram of a crane lifting adjusting device

[0035] Figure 9A schematic diagram of a gear valve structure of a crane lifting adjusting device

[0036] In the figure: suction cup lower frame 100 liquid injection port 110 outer suction cup 200 rubber dome 210 annular hollow body 220 rubber ring 230 hollow handle 240 gas passage 250 inner suction cup 300 hollow pipe 310 liquid outlet control assembly 400 gear valve 410 first sector hole 411 liquid outlet base 420 second sector hole 421 power assembly 500 electric push rod 510 piston assembly 520 piston rod 521 piston head 522 piston cylinder 523 rack rod 530 DETAILED DESCRIPTION

[0037] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, in which preferred embodiments of the application are shown; however, the present application can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, these embodiments are provided so that the disclosure of the present application can be more thoroughly and completely understood.

[0038] It should be noted that the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and are not intended to be the only implementation.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0040] Please refer to Figure 1 A schematic diagram of the overall device of a crane lifting adjusting device.

[0041] This application discloses a crane lifting adjustment device comprising an adjustment frame, a power assembly 500, and a suction cup assembly located at the bottom of the adjustment frame. The suction cup assembly is symmetrically arranged on both sides of the adjustment frame. The adjustment frame includes a suction cup lower frame 100. The power assembly 500 includes an electric push rod 510. The suction cup assembly includes an outer suction cup 200, which includes an outer side wall and an inner side wall, forming an annular cavity between the inner and outer side walls. The cavity can be filled with coolant. The thickness of the outer side wall is 1.5 to 2 times that of the inner side wall, which allows the coolant in the cavity to cool the inner side wall of the suction cup while increasing the structural strength. The suction cup lower frame 100 is fixedly connected to the outer suction cup 200 through a connector, and the outer suction cup 200 can be adsorbed onto the surface of an aluminum plate by pressing down on the suction cup lower frame 100. This achieves the technical effect of reducing the temperature of the contact area between the rubber suction cup and the aluminum plate, thereby preventing the rubber from softening and embedding particles.

[0042] Example 1

[0043] like Figures 1 to 5 As shown, a crane lifting adjustment device includes an adjustment frame, a power assembly 500, and a suction cup assembly located at the bottom of the adjustment frame. The suction cup assembly is symmetrically arranged on both sides of the adjustment frame. The adjustment frame includes a suction cup lower frame 100, and the power assembly 500 includes an electric push rod 510. The suction cup assembly includes an outer suction cup 200, which includes an outer side wall and an inner side wall, forming an annular cavity between the inner and outer side walls. The cavity can be filled with coolant, and the coolant in the cavity can absorb the contact portion between the inner side wall of the outer suction cup 200 and the aluminum plate. The outer sidewall is 1.5 to 2 times thicker than the inner sidewall, ensuring structural strength and enabling the outer suction cup 200 to pick up the aluminum plate. Simultaneously, due to the thinner inner sidewall, the coolant in the cavity cools the contact area between the inner sidewall and the aluminum plate more rapidly. The suction cup lower frame 100 is fixedly connected to the outer suction cup 200 via a connector, allowing the outer suction cup 200 to adhere to the aluminum plate surface by pressing down on the suction cup lower frame 100. The connector can be a spring combined with other rigid discs or directly as rigid columns, etc., which can use auxiliary means to press down the suction cup, thereby adhering it to the aluminum plate.

[0044] The external suction cup 200 is divided into three parts from top to bottom: a rubber dome 210, an annular hollow body 220, and a rubber ring 230.

[0045] The rubber dome 210 is located on the top of the outer suction cup 200, protruding upwards. It is made of elastic rubber and can deform towards the bottom of the suction cup. The upward protrusion provides a larger contraction space inside the suction cup, allowing it to deform inwards and create a greater pressure difference with the outside air, thus making the suction cup more firmly attached to the aluminum plate.

[0046] The annular hollow body 220 is an annular hard structure with an upper and lower opening and a top opening smaller than a bottom opening, preferably metal, similar to a bowl with the bottom hollowed out and inverted, with a cavity in the side wall,

[0047] Specifically, the cavity is close to the bottom opening of the annular hollow body 220, close to the top, and the annular hollow body 220 is located in the middle position of the suction cup, and the top port is fixedly connected with the rubber dome 210;

[0048] The rubber ring 230 is an annular ring with an upper and lower opening and a cavity inside, made of rubber, with the cavity top opening butted against the cavity bottom opening of the annular hollow body, and the top is fixedly connected with the annular hollow body 220, and the lower port is larger than the upper port, and the lower port edge extends outward to the outside of the suction cup 200.

[0049] The power assembly 500 further comprises a piston assembly 520, which comprises a piston rod 521, a piston head 522 and a piston cylinder 523;

[0050] The piston rod 521 is a hard rod at the end of the electric push rod 510, with the piston head 522 fixed at the end, and the piston head 522 is tightly matched with the piston cylinder 523; the piston cylinder 523 is fixedly connected with the suction cup lower frame 100, and is a cylindrical structure with two openings, one end of which is the entrance of the piston rod 521, and the other end is provided with a channel outlet leading to the direction perpendicular to the side surface of the piston cylinder 523, and the air inside the piston cylinder 523 is pushed out by the piston head 522.

[0051] The outer suction cup 200 further comprises a gas channel 250, which is a hollow rod structure with two openings, and the bottom penetrates the annular hollow body 220 and is fixedly connected with the annular hollow body 220. The gas channel can be made of hard material or hose, mainly for conveying gas, and the top end is fixedly connected with the channel outlet of the piston cylinder 523, so that the air inside the piston cylinder 523 and the air inside the outer suction cup 200 can be communicated.

[0052] The outer suction cup 200 further comprises a hollow handle 240, which is an arc-shaped handle structure made of hard material, preferably metal, with a cavity inside; the cavity has two openings, one end of the cavity is butted against the cavity of the annular hollow body 220, and the other end is butted against the suction cup lower frame 100; one end of the hollow handle 240 is fixed to the outer side surface of the annular hollow body 220, and the other end is fixed to the suction cup lower frame 100, so that the suction cup lower frame 100 can press down the outer suction cup 200 through the hollow handle 240, and the hollow handle plays a role in supporting the suction cup lower frame 100 and fixing the outer suction cup 200.

[0053] The cavities of the suction cup lower frame 100, the hollow handle 240, the annular hollow body 220 and the rubber ring 230 are communicated with each other to form a closed space for filling cooling liquid.

[0054] The suction cup lower frame 100 is a hollow cuboid structure capable of storing cooling liquid, and the top of the suction cup lower frame 100 is fixedly connected to the lower end surface of the third support through a connecting piece. The top of the suction cup lower frame 100 includes an openable and closable liquid injection port 110, and the cooling liquid can be injected into the cavity through the liquid injection port 110. The cooling liquid enters the cavity of the suction cup lower frame 100 and then flows into the cavity of the outer suction cup 200 through the hollow handle 240. At the same time, the suction cup lower frame 100 can store more cooling liquid and can absorb more heat. When the cooling liquid in the outer suction cup 200 absorbs heat, heat exchange occurs between the cooling liquid in the outer suction cup 200 and the cooling liquid in the suction cup lower frame 100, so that the cooling effect of the cooling liquid in the suction cup cavity is more durable.

[0055] The technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0056] By setting the cavity in the outer suction cup 200 and filling the cavity with cooling liquid, the heat of the contact part between the outer suction cup 200 and the aluminum plate with dust particles in a high temperature state is shared, so that the outer suction cup is less likely to soften and deform, thereby achieving the technical effect of avoiding the embedding and adhesion of particles to the rubber suction cup to a certain extent.

[0057] By setting the annular hollow body 220 in the outer suction cup 200, the suction cup is more solid and durable, and the internal space of the suction cup can be stably formed, thereby reducing the deformation irregularity of the suction cup due to the cavity inside the suction cup.

[0058] By setting the piston assembly 520, the suction cup is changed from a downward pressing type to a suction type to better form a pressure difference with the external air, and the technical problem of not being convenient to press to form a pressure difference due to the hardness of the annular hollow body 220 is solved, thereby achieving the technical effect of stably forming a pressure difference.

[0059] By setting the suction cup lower frame 100 as hollow, and the cavities of the suction cup lower frame 100, the hollow handle 240, the annular hollow body 220 and the rubber ring 230 are communicated with each other to form a closed cavity, more cooling liquid can be stored, the cooling liquid in the device can share more heat when the cooling liquid is replaced, and the technical effect of enhancing the continuous working time of the device is achieved.

[0060] Embodiment two

[0061] In actual operation, it is found that the problems in the above-mentioned embodiment one can be improved, such as the smaller contact area between the outer suction disc 200 and the aluminum plate. When there are many dust particles, the outer suction disc 200 may be at risk of warping and falling off. Therefore, the inner suction disc 300 is provided, and water is discharged from the bottom of the inner suction disc 300, so that the contact between the inner suction disc 300 and the aluminum plate is more firm, achieving the technical effect of enhancing the suction force in the vertical direction of the device and the aluminum plate. At the same time, the setting of the inner suction disc 300 achieves the technical effect of avoiding the unfirm adsorption of the outer suction disc 200.

[0062] As shown in Figures 1 to 9 The suction disc assembly further includes an inner suction disc 300 located in the space below the outer suction disc 200. The size of the inner suction disc 300 is smaller than that of the outer suction disc 200. The inner suction disc 300 is fixedly connected to the lower end surface of the suction disc lower frame 100 through a hollow tube 310. The hollow tube 310 is a tubular structure with open upper and lower ends. It is made of hard material, preferably metal, which can enable the suction disc lower frame 100 to press down the top of the inner suction disc 300 through the hollow tube 310. After pressing down, the air in the inner suction disc 300 is squeezed out, forming a pressure difference, and the air pressure in the inner suction disc is smaller than that in the outer suction disc, so that the inner suction disc 300 is adsorbed on the surface of the aluminum plate. The upper end of the hollow tube 310 penetrates through the lower end surface of the suction disc lower frame 100 and is fixedly connected to the inner cavity of the suction disc lower frame 100. The lower end penetrates through the rubber dome 210 and is fixedly connected to the top of the inner suction disc 300. The top of the inner suction disc 300 is on the same horizontal line as the top of the rubber ring 230, so that the outer suction disc 200 and the inner suction disc 300 can be fully pressed down.

[0063] The crane lifting adjusting device further includes a liquid discharge control assembly 400. The liquid discharge control assembly 400 includes a gear valve 410 and a liquid discharge base 420. The liquid discharge base 420 is a cylindrical structure with an open bottom, similar to a bottle cap. The bottom of the liquid discharge base 420 is fixedly connected to the top end of the hollow tube 310, and the top end has a ring-shaped protrusion. A ring-shaped groove is provided at the bottom of the ring-shaped protrusion and opens radially inward. A first fan-shaped hole 411 is provided at the top of the liquid discharge base 420. The first fan-shaped hole 411 is a quarter fan-shaped through hole. The curved edge of the first fan-shaped hole 411 closely fits the incircle of the ring-shaped protrusion, and the intersection of the straight edges is located at the center of the circle. The gear valve 410 is cylindrical and has a diameter smaller than the incircle of the ring-shaped protrusion of the liquid discharge base 420. A protrusion is provided at the bottom of the gear valve 410 and extends radially outward. The protrusion closely fits the groove of the liquid discharge base 420. The gear valve 410 is coaxial with the liquid discharge base 420, so that the gear valve 410 and the liquid discharge base 420 can be rotationally connected. The liquid discharge base 420 is fixed, and the gear valve 410 rotates along the axis. The gear valve 410 is provided with a second fan-shaped hole 421 identical to the first fan-shaped hole 411. The second fan-shaped hole 421 is a quarter fan-shaped through hole, and a ring of gears is fixed to the top of the second fan-shaped hole 421.

[0064] The power assembly 500 further comprises a rack rod 530, which is a branch at the end of the electric push rod 510, and the front end of the rack rod 530 is provided with teeth matched with the gear of the gear valve 410, so that the gear valve 410 can rotate when the electric push rod 510 is pushed or pulled; when the piston head 522 is at the innermost position of the piston cylinder 523, the two fan-shaped through holes are in a closed state, i.e. not intersecting and not coinciding, so that water cannot be discharged; when the piston head 522 is closest to the inlet of the piston cylinder 523, the two fan-shaped through holes are also in a closed state; when the two fan-shaped through holes intersect or coincide, the cooling liquid can flow into the bottom space of the inner suction disc 300 through the hollow pipe 310 from the two fan-shaped through holes.

[0065] The above description is only the preferred embodiments of the present application, and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A crane lifting adjusting device, comprising an adjusting fixture, a power assembly (500) and a suction cup assembly at the bottom of the adjusting fixture, the suction cup assembly is symmetrically arranged on both sides of the adjusting fixture, the adjusting fixture comprises a suction cup lower frame (100), the power assembly (500) comprises an electric push rod (510), characterized in that, the suction cup assembly comprises an outer suction cup (200), the outer suction cup (200) comprises an outer sidewall and an inner sidewall, an annular cavity is formed between the inner and outer sidewalls, and the cavity can be filled with cooling liquid; the thickness of the outer sidewall is 1.5 to 2 times that of the inner sidewall, which can cool the inner sidewall of the suction cup while increasing the structural strength of the cavity; the suction cup lower frame (100) is fixedly connected with the outer suction cup (200) through a connecting piece, and the outer suction cup (200) can be adsorbed on the surface of an aluminum plate by pressing the suction cup lower frame (100); the outer suction cup (200) is divided into a rubber dome (210), an annular hollow body (220) and a rubber ring (230) from top to bottom; the rubber dome (210) is located at the top of the outer suction cup (200) and protrudes upward, is made of elastic rubber material, and can deform toward the bottom of the suction cup; the annular hollow body (220) is an annular hard structure with openings at the top and bottom, the top opening is smaller than the bottom opening, the sidewall has a cavity, and the annular hollow body (220) is located at the middle position of the suction cup, and the top port is fixedly connected with the rubber dome (210); the rubber ring (230) is an annular ring with a cavity inside, is made of rubber material, the top is fixedly connected with the annular hollow body (220), the lower port is larger than the upper port, and the lower port edge extends outwardly from the outer suction cup (200); the power assembly (500) further comprises a piston assembly (520), the piston assembly (520) comprises a piston rod (521), a piston head (522) and a piston cylinder (523); the piston rod (521) is a hard rod branch at the end of the electric push rod (510), the end is fixed with the piston head (522), the piston head (522) is tightly matched with the piston cylinder (523), and a sealed space is formed between the piston head (522) and the piston cylinder (523); the piston cylinder (523) is fixedly connected with the suction cup lower frame (100) and has a tubular structure with openings at both ends, one end close to the electric push rod (510) is the inlet of the piston rod (521), and the other end is provided with a channel outlet leading to a direction perpendicular to the side surface of the piston cylinder (523); the outer suction cup (200) further comprises a gas channel (250), the gas channel (250) is a hollow rod structure with openings at both ends, penetrates the annular hollow body (220) at the bottom and is fixedly connected with the annular hollow body (220), and the top end is fixedly connected with the channel outlet of the piston cylinder (523), so that the piston cylinder (523) can suck the air inside the outer suction cup (200), and the air inside the piston cylinder (523) can also be pushed into the outer suction cup (200).

2. A crane load-lifting adjustment device according to claim 1, characterised in that, The connecting piece between the outer suction cup (200) and the suction cup lower frame is a hollow handle (240), the hollow handle (240) is an arc handle structure, is made of hard material, and is hollow inside and open at both ends; One end of the hollow handle (240) is fixed to the outer side of the annular hollow body (220), and the other end is fixed to the suction cup lower frame (100), so that the suction cup lower frame (100) can press down the outer suction cup (200) through the hollow handle (240).

3. A crane load-lifting adjustment device according to claim 2, characterised in that, The suction cup lower frame (100) is a hollow rectangular structure, can store liquid, is fixedly connected to the lower end surface of the third support through the connecting piece, and the top of the suction cup lower frame (100) includes an openable liquid injection port (110), so that the cooling liquid can be injected into the cavity through the liquid injection port (110).

4. A crane load-lifting adjustment device according to claim 3, characterised in that, The cavities of the suction cup lower frame (100), the hollow handle (240), the annular hollow body (220) and the rubber ring (230) are connected to each other, forming a closed space for filling cooling liquid.

5. A crane load-lifting adjustment device according to claim 4, characterised in that, The suction cup assembly further comprises an inner suction cup (300) located in the space below the outer suction cup (200), which is fixedly connected to the lower end surface of the suction cup lower frame (100) through a hollow tube (310), the hollow tube (310) is a tubular structure with open upper and lower ends, is made of hard material, and can press down the top of the inner suction cup (300) to make the air pressure below the inner suction cup (300) lower than the air pressure inside the outer suction cup (200), so that the inner suction cup (300) is adsorbed on the surface of the aluminum plate; the upper end of the hollow tube (310) penetrates the lower end surface of the suction cup lower frame (100) and is fixedly connected to the inner cavity of the suction cup lower frame (100), and the lower end penetrates the rubber dome (210) and is fixedly connected to the top of the inner suction cup (300), the top of the inner suction cup (300) and the top of the rubber ring (230) are on the same horizontal line.

6. A crane load-lifting adjustment device according to claim 5, characterised in that, The liquid outlet control assembly (400) comprises a gear valve (410) and a liquid outlet base (420), the liquid outlet base (420) is a cylindrical structure with an open bottom, the bottom of the liquid outlet base (420) is fixedly connected to the top end of the hollow tube (310), the top end of the liquid outlet base (420) has a ring-shaped protrusion, the bottom of the ring-shaped protrusion is provided with a ring-shaped groove which is radially inwardly open, the top of the liquid outlet base (420) is provided with a first fan-shaped hole (411), which is a quarter fan-shaped through hole, and the intersection of the straight edges of the fan-shaped hole is located on the axis of the liquid outlet base (420); the gear valve (410) is cylindrical, the diameter of the gear valve (410) is smaller than that of the liquid outlet base (420), the gear valve (410) can be inserted into the ring-shaped protrusion of the liquid outlet base (420), the bottom of the gear valve (410) is provided with a ring-shaped protrusion which extends radially outward, the protrusion is tightly matched with the groove, the gear valve (410) is coaxial with the liquid outlet base (420), the gear valve (410) and the liquid outlet base (420) are rotatably connected, the gear valve (410) is provided with a second fan-shaped hole (421) which is the same as the first fan-shaped hole (411), the second fan-shaped hole (421) is a quarter fan-shaped through hole, the intersection of the straight edges of the second fan-shaped hole (421) is located on the axis of the liquid outlet base (420), and a ring of gears is fixed to the top of the gear valve (410).

7. A crane load-lifting adjustment device according to claim 6, characterised in that, The power assembly (500) further comprises a rack rod (530), which is a branch at the end of the electric push rod (510), and the front end is provided with a tooth matched with the gear of the gear valve (410), and can rotate the gear valve (410) when the electric push rod (510) is pushed and pulled. When the piston head (522) is at both ends of the piston cylinder (523), the two fan-shaped holes are not intersected and coincided, when the two fan-shaped through holes are intersected or coincided, the cooling liquid can flow into the bottom space of the inner suction cup (300) through the hollow pipe (310).

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