Lifting device for stacker crane

Abstract

The utility model provides a lifting device for a stacker crane. The lifting device comprises a base, a hydraulic telescopic cylinder, a lifting platform, a stacking device and a guide supporting device. The guide supporting device is provided with a guide column, a guide sleeve and a ball rolling between the guide column and the guide sleeve so as to reduce friction resistance. Particularly, an elastic washer and a lubricating oil main pipeline communicated with the elastic washer are arranged at the bottom of the guide pillar, and an auxiliary pipeline communicated with the main pipeline is arranged on the side wall of the guide pillar and corresponds to the balls in position. When the guide pillar descends, the gasket deforms, the lubricating oil is extruded to be sprayed to the ball through the auxiliary pipeline, and lubrication and cleaning are achieved. In addition, an anti-rotation structure is arranged to ensure stable guiding, and the guiding and supporting devices are connected through a reinforcing rod to improve the stability. The lifting platform is provided with a protective cover to protect internal devices. And the stacking device adopts a mechanical arm structure, so that the cargo stacking efficiency is improved. By means of the elastic washer and the lubricating oil spraying system, efficient and stable operation of the guiding and supporting device is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of palletizers, in particular to a lifting device for a palletizer. Background Technique

[0002] Palletizers are automated mechanical devices that play a key role in modern industrial production. It has many remarkable characteristics such as high efficiency, high precision, high degree of automation, significant manpower savings, and wide applicability. It can quickly and accurately complete the palletizing operations of various goods with different shapes, sizes, and weights. And, according to the differences in structural forms, it can be divided into Cartesian coordinate type, articulated type, gantry type, etc.; according to different driving methods, it can be divided into electric type, pneumatic type, hydraulic type, and other types.

[0003] A lifting device for a palletizer provided by the publication number "CN220316597U" includes a support assembly, a lifting assembly, and a palletizing assembly. The support assembly includes a bottom plate, a base fixed to the upper end of the bottom plate, and a support seat provided on the upper end of the base. A placement groove is opened in the middle of the upper end of the base, and an opening is opened on the outer side of the middle of the upper end of the base. The lifting assembly includes a hydraulic cylinder fixed in the placement groove and a limiting rod provided in the opening. The top ends of the hydraulic cylinder and the limiting rod are both fixed to the lower end of the support seat. The outer wall of the limiting rod fits against the inner wall of the opening. The palletizing assembly includes a palletizing arm provided on the support seat and a gripping head provided at the end of the palletizing arm. For this lifting device for a palletizer, by setting the hydraulic cylinder to push the support seat to lift, the palletizing assembly above the support seat can be lifted, and the height of the palletizer can be adjusted according to the material characteristics and the changes in the storage environment during use, enhancing the practicability of the device.

[0004] However, the above technical solution and the existing technologies have the following defects: Although a limiting rod is specially provided in the above-mentioned device to assist the palletizer to lift more smoothly and effectively, during the actual lifting process, obvious friction will inevitably occur between the limiting rod and the limiting groove. Over time, after continuous use for a long time, inevitable wear will gradually occur between the limiting groove and the limiting rod, and the occurrence of this wear phenomenon directly leads to a significant reduction in their service life. Content of the Utility Model

[0005] The purpose of the utility model is to provide a lifting device for a palletizer to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A lifting device for a palletizer, comprising a base, a hydraulic telescopic cylinder fixedly arranged on the base, a lifting platform fixedly arranged on the movable end of the hydraulic telescopic cylinder, a palletizing device fixedly arranged on the lifting platform, and a guiding and supporting device fixedly arranged between the base and the lifting platform;

[0008] The guiding and supporting device includes a guide post fixedly arranged on the lifting platform and a guide sleeve fixedly arranged on the base. The guide post is movably arranged in the guide sleeve. An annular groove is formed at the bottom of the guide post, a fixing ring is sleeved on the annular groove, a plurality of balls are rotatably arranged on the fixing ring, and a fixing ring is fixedly arranged at one end of the annular groove.

[0009] Preferably, the guiding and supporting device further includes a washer fixedly arranged at the bottom of the guide post, lubricating oil is arranged at the bottom of the guide sleeve, the washer is made of an elastic material, a main pipeline is formed at the bottom of the guide post, the washer is communicated with the main pipeline, and a plurality of secondary pipelines are also penetrated through the side wall of the guide post. The plurality of secondary pipelines are communicated with the main pipeline and correspond to the positions of the balls.

[0010] Preferably, an anti-rotation protrusion is further fixedly arranged on the guide post, and an anti-rotation groove matching with the anti-rotation protrusion is formed on the fixing ring.

[0011] Preferably, a reinforcing rod is fixedly arranged between the guiding and supporting devices.

[0012] Preferably, the number of the guiding and supporting devices is three groups.

[0013] Preferably, a first protective cover is fixedly arranged at the bottom of the lifting platform, a second protective cover is fixedly arranged on the base, and the first protective cover is sleeved outside the second protective cover.

[0014] Preferably, the palletizing device includes a turntable, a first robotic arm is rotatably arranged on the turntable, a second robotic arm is rotatably arranged on the first robotic arm, and a palletizing head is rotatably arranged on the second robotic arm.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The washer is made of an elastic material. When the guide post descends to the lowest point of the stroke, the washer is squeezed and deformed, resulting in the reduction of the internal space, thereby squeezing and releasing the lubricating oil. This design ensures that the lubricating oil can be sprayed onto the balls timely and in an appropriate amount, providing continuous lubrication for the balls. At the same time, the deformation characteristic of the washer plays a buffering role, reducing the direct impact between the guide post and the guide sleeve during the lifting process, thereby prolonging the service life of the device and improving the stability of the lifting platform.

[0017] 2. The ball rolls between the guide post and the guide sleeve, greatly reducing the frictional resistance between the two, making the lifting and lowering actions of the lifting platform smoother and more efficient. Due to the reduction of friction, the movement efficiency of the lifting platform has been significantly improved, thus accelerating the palletizing speed of goods. The lubricating oil sprayed onto the balls not only provides continuous lubrication for the balls, but also can wash away the impurities adhering to the balls, ensuring the continuous and effective operation of the balls, and further improving the performance and reliability of the guiding and supporting device.

[0018] Working principle: When the lifting platform is lifted and lowered under the drive of the hydraulic telescopic cylinder, especially when the guide post descends to the lowest point of the guide sleeve, the washer will be deformed under the extrusion of the guide post. This deformation will cause the space inside the washer to shrink, thereby squeezing and pushing the lubricating oil.

[0019] Since the main pipeline and the secondary pipeline are designed inside the guide post, when the washer is squeezed, the lubricating oil inside it will be forced to flow from the main pipeline to the secondary pipeline. The position of the secondary pipeline corresponds to the position of the balls, so the lubricating oil will be directly sprayed onto the balls. This lubrication process not only reduces the friction between the balls and the guide post and the guide sleeve, making the lifting and lowering actions of the lifting platform smoother, but also can wash away the impurities adhering to the balls, ensuring the continuous and effective operation of the balls.

[0020] Therefore, the working principle of the washer is mainly to squeeze and release the lubricating oil through its elastic deformation, providing continuous lubrication and cleaning for the balls, thus ensuring the efficient and stable operation of the guiding and supporting device. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 It is a three-dimensional structure schematic diagram of the base of the present utility model;

[0023] Figure 3 It is a three-dimensional structure schematic diagram of the guide post of the present utility model;

[0024] Figure 4 It is a diagram of the mating state of the guide post and the guide sleeve of the present utility model;

[0025] Figure 5 It is a diagram of the state when the washer of the present utility model is squeezed.

[0026] In the figure: 1, base; 2, hydraulic telescopic cylinder; 3, lifting platform; 4, palletizing device; 5, guide post; 6, guide sleeve; 7, annular groove; 8, fixing ring; 9, ball; 10, fixing ring; 11, washer; 12, main pipeline; 13, auxiliary pipeline; 14, anti-rotation projection; 15, anti-rotation groove; 16, reinforcing rod; 17, first protective cover; 18, second protective cover; 19, turntable; 20, first robotic arm; 21, second robotic arm; 22, palletizing head. Specific implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1-5 , the present invention provides a technical solution:

[0029] A lifting device dedicated to a palletizer mainly consists of a base 1, a hydraulic telescopic cylinder 2, a lifting platform 3, a palletizing device 4, and a guiding and supporting device, etc. The base 1 serves as the foundation of the entire device and is fixedly arranged in the working space. A hydraulic telescopic cylinder 2 is fixedly installed thereon. The hydraulic telescopic cylinder 2 is connected to a drive control device (not shown in the figure). The movable end of the hydraulic telescopic cylinder 2 is closely connected to the lifting platform 3 to ensure that the lifting platform 3 realizes stable and precise lifting actions under the drive of the hydraulic telescopic cylinder 2.

[0030] The lifting platform 3 serves as the installation foundation of the palletizing device 4, and a palletizing device 4 is fixedly arranged thereon. This device is responsible for performing the stacking task of goods. In order to ensure the smooth lifting of the lifting platform 3 and the precise operation of the palletizing device 4, a set of guiding and supporting devices is designed between the base 1 and the lifting platform 3.

[0031] The core components of the guiding and supporting device include a guide post 5 and a guide sleeve 6. The guide post 5 is fixedly installed on the side of the lifting platform 3, while the guide sleeve 6 is correspondingly fixed on the base 1. The guide post 5 is movably arranged in the guide sleeve 6 to ensure the stability of the lifting platform 3 during the lifting process. At the bottom of the guide post 5, an annular groove 7 is designed. A fixing ring 8 is sleeved on the annular groove 7, and a plurality of balls 9 are annularly arrayed on the fixing ring 8. These balls 9 roll between the guide post 5 and the guide sleeve 6, effectively reducing the friction between the two and improving the movement efficiency of the lifting platform 3.

[0032] To ensure the stability of the fixed ring 8, a fixing ring 10 is installed at one end of the annular groove 7. The fixing ring 10 tightly locks the fixed ring 8 on the guide post 5 through fasteners. In addition, to prevent the guide post 5 from rotating during the lifting process, an anti-rotation protrusion 14 is provided on the guide post 5, and correspondingly, an anti-rotation groove 15 is provided on the fixed ring 8. This design ensures the stability and guiding property of the guide post 5 during the lifting process.

[0033] To further improve the lubrication performance and durability of the guiding and supporting device, an elastic washer 11 is provided at the bottom of the guide post 5. At the bottom of the guide sleeve 6, a certain amount of lubricating oil is injected. When the guide post 5 descends to the lowest point of the guide sleeve 6 driven by the hydraulic telescopic cylinder 2, the guide post 5 will squeeze the washer 11, causing it to deform. The space in the washer 11 shrinks, and the internal lubricating oil is squeezed, and then will be discharged through the main pipe 12 and the sub-pipe 13 inside the guide post 5. Since the position of the sub-pipe 13 corresponds to the position of the ball 9, the lubricating oil will directly spray onto the ball 9 to play a lubricating role. At the same time, the spraying effect of the lubricating oil can also wash away the impurities adhering to the ball 9, ensuring the long-term stable operation of the guiding and supporting device.

[0034] To improve the overall stability of the guiding and supporting device, strengthening rods 16 are installed between the guiding and supporting devices. These strengthening rods 16 connect multiple guiding and supporting devices into a whole, forming a stable supporting framework. In this design, three groups of guiding and supporting devices are adopted to ensure the balance and stability of the lifting platform 3 during the lifting process.

[0035] In addition, to protect the hydraulic telescopic cylinder 2 and the guiding and supporting device from being eroded and damaged by the external environment, a first protective cover 17 is installed at the bottom of the lifting platform 3, and a second protective cover 18 is installed on the base 1. The first protective cover 17 is sleeved outside the second protective cover 18, forming a closed space, effectively isolating the influence of the external environment on the internal device.

[0036] The palletizing device 4 includes a turntable 19. A first robotic arm 20 is rotatably provided on the turntable 19. A second robotic arm 21 is rotatably provided on the first robotic arm 20. And at the end of the second robotic arm 21, a palletizing head 22 is installed. By controlling the rotation angles and speeds of the turntable 19, the first robotic arm 20 and the second robotic arm 21, the rapid and accurate palletizing of goods can be achieved. This design greatly improves the working efficiency and accuracy of the palletizer. The palletizing device in this embodiment is a commonly used device in the technical field, and is well-known technology to those skilled in the technical field, so it will not be elaborated here.

[0037] Working principle: The hydraulic telescopic cylinder 2 on the base 1 is connected to the drive control device, and its movable end is connected to the lifting platform 3, and drives the lifting platform 3 to lift under hydraulic action.

[0038] The guide post 5 on the lifting platform 3 is movably arranged in the corresponding guide sleeve 6 on the base 1, and the balls 9 on the fixing ring 8 of the annular groove 7 at the bottom of the guide post 5 roll to reduce the friction force.

[0039] The elastic washer 11 at the bottom of the guide post 5 and the lubricating oil at the bottom of the guide sleeve 6 work together. When the guide post 5 descends to the lowest point of the guide sleeve 6 and squeezes the washer 11 (as Figure 5 shown), the washer 11 deforms, the internal space shrinks, squeezing the lubricating oil at the bottom of the guide sleeve to be discharged through the main pipe 12 and the sub-pipe 13 corresponding to the position of the ball 9, and sprayed onto the ball 9 to lubricate and wash away impurities, ensuring the long-term stable operation of the guiding and supporting device.

[0040] It should be noted that there is a gap between the ball and the sub-pipe. Therefore, when the guide post rises, the washer 11 will not be adsorbed in the guide sleeve due to vacuum negative pressure.

[0041] The reinforcing rods 16 between multiple guiding and supporting devices form a stable framework, and the three groups of guiding and supporting devices are respectively located on both sides and in the middle of the lifting platform 3 to ensure balance and stability.

[0042] The first protective cover 17 at the bottom of the lifting platform 3 and the second protective cover 18 on the base 1 form a closed space to protect the hydraulic telescopic cylinder 2 and the guiding and supporting device.

[0043] The palletizing device 4 controls the rotation angle and speed through the turntable 19, the first robotic arm 20, the second robotic arm 21 and the palletizing head 22 at the end to achieve rapid and accurate palletizing of goods.

[0044] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device for a palletizer, comprising a base (1), a hydraulic telescopic cylinder (2) fixedly arranged on the base (1), a lifting platform (3) fixedly arranged on the movable end of the hydraulic telescopic cylinder (2), a palletizing device (4) fixedly arranged on the lifting platform (3), characterized in that: A guide support device is fixedly arranged between the base (1) and the lifting platform (3); The guide support device comprises a guide column (5) fixedly arranged on the lifting platform (3) and a guide sleeve (6) fixedly arranged on the base (1); the guide column (5) is movably arranged in the guide sleeve (6); an annular groove (7) is provided on the bottom of the guide column (5); a fixing ring (8) is sleeved on the annular groove (7); a plurality of balls (9) are rollingly arranged on the fixing ring (8); and a fixing ring (10) is fixedly arranged at one end of the annular groove (7).

2. A lifting device for a palletizer according to claim 1, characterized in that: The guide support device also includes a washer (11) fixedly arranged at the bottom of the guide column (5), lubricating oil is arranged at the bottom of the guide sleeve (6), the washer (11) is made of elastic material, a main pipe (12) is opened at the bottom of the guide column (5), the washer (11) is connected to the main pipe (12), and a plurality of auxiliary pipes (13) are also penetrated on the side wall of the guide column (5), the plurality of auxiliary pipes (13) are connected to the main pipe (12) and correspond to the positions of the balls (9).

3. A lifting device for a palletizer according to claim 1, characterized in that: The guide column (5) is also fixedly provided with an anti-rotation protrusion (14), and the fixing ring (8) is provided with an anti-rotation groove (15) matching the anti-rotation protrusion (14).

4. A lifting device for a palletizer according to claim 3, characterized in that: A reinforcing rod (16) is fixedly arranged between the guide support devices.

5. A lifting device for a palletizer according to claim 4, characterized in that: The number of the guide support devices is three groups.

6. A lifting device for a palletizer according to claim 1, characterized in that: A first protective cover (17) is fixedly arranged at the bottom of the lifting platform (3), a second protective cover (18) is fixedly arranged on the base (1), and the first protective cover (17) is sleeved on the outside of the second protective cover (18).

7. A lifting device for a palletizer according to claim 1, characterized in that: The palletizing device (4) comprises a turntable (19), a first mechanical arm (20) is rotatably arranged on the turntable (19), a second mechanical arm (21) is rotatably arranged on the first mechanical arm (20), and a palletizing head (22) is rotatably arranged on the second mechanical arm (21).

Images