Multi-stage lifting mechanism

Abstract

The utility model relates to the technical field of multi-stage lifting, and discloses a multi-stage lifting mechanism which comprises a chain wheel installation base, a driving assembly used for providing power is arranged outside the chain wheel installation base, a pressing plate is fixedly connected to the top of the chain wheel installation base, and a limiting block is fixedly connected to the top of the pressing plate. A first-stage guide pipe is fixedly connected to the top of the pressing plate, a first-stage sliding sleeve is slidably connected to the interior of the first-stage guide pipe, a first-stage spacer bush is fixedly connected to the interior of the first-stage sliding sleeve, a second-stage guide pipe is fixedly connected to the interior of the first-stage spacer bush, and a second-stage sliding sleeve is slidably connected to the interior of the second-stage guide pipe. And a second-stage spacer bush is fixedly connected to the interior of the second-stage sliding sleeve. According to the utility model, under the transmission support of the chain, the effects of adjustable height and stable extension and retraction are realized, the requirements of different scenes on height can be flexibly met, and meanwhile, the air blowing task can be completed when the mechanism ascends and descends through the cooperative work of all the parts.

Description

TECHNICAL FIELD

[0001] The utility model relates to multistage lifting technical field especially multistage lifting mechanism. BACKGROUND

[0002] The lifting mechanism is a mechanical device that can realize the vertical upward and downward movement of objects. It is usually composed of power source, transmission device, guide device and actuator. The power source can be motor, hydraulic pump or air pump, etc. to provide power for lifting movement. The transmission device transmits power from the power source to the actuator, and the common transmission methods are gear transmission, chain transmission, belt transmission and hydraulic transmission, etc. The guide device is used to ensure the stability and accuracy of the actuator during lifting to prevent it from deviating or shaking. The actuator is the part that directly contacts the object being lifted, usually using hydraulic cylinder, air cylinder, screw nut mechanism or scissor type mechanism, etc. The lifting mechanism is widely used in industrial production, logistics transportation, construction, aerospace, etc. such as cargo loading and unloading in factories, elevators on construction sites, boarding bridges in airports, etc. to provide great convenience for people's production and life.

[0003] Multistage lifting is a technology or device that realizes large vertical lifting of objects through multiple levels or stages. It is based on the cooperative work of multiple lifting units, each unit is responsible for a certain lifting stroke, and through sequential or synchronous operation, the overall lifting action is completed.

[0004] However, the existing part of the lifting mechanism has difficulty in ensuring stability when adjusting the height, relying only on a single support column and a simple lifting device, lacking the precise and layer-by-layer cooperation of the guide limiting mechanism between the multistage guide pipes and the sliding sleeves, isolation sleeves in the multistage lifting mechanism. This leads to shaking and deviation during lifting due to uneven stress, external environmental interference and other factors, which cannot accurately deliver goods or tools to the specified height, not only reducing work efficiency, but also causing safety accidents due to instability, posing potential threats to personnel and equipment. Therefore, in view of the above problems, the multistage lifting mechanism is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a multistage lifting mechanism, aiming at improving the problem that the existing part of the lifting mechanism cannot ensure the stability of height adjustment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Multi-stage lifting mechanism, including chain wheel mounting seat, the outside of chain wheel mounting seat is provided with drive assembly for providing power, the top of chain wheel mounting seat is fixedly connected with pressing plate, the top of pressing plate is fixedly connected with limiting block, the top of pressing plate is fixedly connected with primary guide pipe, the inside of primary guide pipe is slidably connected with primary sliding sleeve, the inside of primary sliding sleeve is fixedly connected with primary separation sleeve, the inside of primary separation sleeve is fixedly connected with secondary guide pipe, the inside of secondary guide pipe is slidably connected with secondary sliding sleeve, the inside of secondary sliding sleeve is fixedly connected with secondary separation sleeve, the inside of secondary separation sleeve is fixedly connected with tertiary guide pipe, the inside of tertiary guide pipe is slidably connected with tertiary sliding sleeve, the inside of tertiary sliding sleeve is fixedly connected with tertiary separation sleeve, the inside of tertiary separation sleeve is fixedly connected with fourth guide pipe, the inside of fourth guide pipe is slidably connected with fourth sliding sleeve, the bottom of fourth sliding sleeve is fixedly connected with positioning sliding block, the inside of fourth sliding sleeve is fixedly connected with fourth separation sleeve, the inside of fourth separation sleeve is fixedly connected with fifth guide pipe, the top of fifth guide pipe is provided with air blowing assembly for blowing air,

[0008] As a further description of the above technical solution:

[0009] The drive assembly comprises a servo motor, the bottom of the servo motor is mounted on the top of the chain wheel mounting seat, the output end of the servo motor is fixedly connected with a chain wheel, the outside of the chain wheel is sleeved with a chain, the front side of the chain wheel mounting seat is fixedly connected with a chain box, and the outside of the chain box is provided with a sensor;

[0010] As a further description of the above technical solution:

[0011] The air blowing assembly comprises an air flow switching block, the bottom of the air flow switching block is fixedly connected to the top of the fifth guide pipe, the top of the air flow switching block is fixedly connected with a mounting cover plate, the top of the mounting cover plate is provided with a rotary air blowing nozzle, the top of the mounting cover plate is fixedly connected with a plurality of supporting columns, and the top of the plurality of supporting columns is fixedly connected with an air blowing upper cover;

[0012] As a further description of the above technical solution:

[0013] One end of the chain is fixedly connected to the inside of the chain box, and the other end of the chain is fixedly connected to the bottom of the chain supporting pipe;

[0014] As a further description of the above technical solution:

[0015] The top of the chain supporting pipe is fixedly connected to the bottom of the air flow switching block, and the outside of the fourth separation sleeve is slidably connected to the inside of the fourth guide pipe;

[0016] As a further description of the above technical solutions:

[0017] The outer part of the third spacer sleeve is slidably connected in the inner part of the third guide pipe, and the outer part of the second spacer sleeve is slidably connected in the inner part of the second guide pipe.

[0018] As a further description of the above technical solutions:

[0019] The outer part of the first spacer sleeve is slidably connected in the inner part of the first guide pipe, and the top of the limiting block is in contact with the bottom of the first sliding sleeve.

[0020] The utility model has the advantages of:

[0021] In the utility model, the multistage guide pipe design contains the first to fifth guide pipes, and the sliding sleeves and spacer sleeves in each guide pipe are cooperated layer by layer, such as the first sliding sleeve and the first spacer sleeve in the first guide pipe, under the support of the chain transmission, the height adjustable and telescopic stable effect is realized, and the height demand of different scenes can be flexibly met. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the three-dimensional view of the multistage lifting mechanism provided by the utility model;

[0023] Figure 2 It is the three-dimensional view of the multistage lifting mechanism provided by the utility model;

[0024] Figure 3 It is the three-dimensional view of the multistage lifting mechanism provided by the utility model;

[0025] Figure 4 It is the three-dimensional view of the multistage lifting mechanism provided by the utility model;

[0026] LEGEND:

[0027] 1, blow cover; 2, support column; 3, rotating blow nozzle; 4, installation cover plate; 5, airflow adapter block; 6, five-stage guide pipe; 7, chain support pipe; 8, four-stage spacer sleeve; 9, four-stage sliding sleeve; 10, four-stage guide pipe; 11, positioning sliding block; 12, three-stage spacer sleeve; 13, three-stage sliding sleeve; 14, three-stage guide pipe; 15, two-stage spacer sleeve; 16, two-stage sliding sleeve; 17, two-stage guide pipe; 18, one-stage spacer sleeve; 19, one-stage sliding sleeve; 20, one-stage guide pipe; 21, sensor; 22, chain box; 23, limit block; 24, chain wheel; 25, chain wheel mounting seat; 26, chain; 27, pressing plate; 28, servo motor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] With reference to Figures 1 to 3 An embodiment provided by the utility model: multi-stage lifting mechanism, including chain wheel mounting seat 25, chain wheel mounting seat 25 provides the installation position for drive assembly, and as the bearing basis of whole mechanism. The external of chain wheel mounting seat 25 is provided with drive assembly for providing power, the top of chain wheel mounting seat 25 is fixedly connected with pressing plate 27, and pressing plate 27 is used to fix chain wheel 24. The top of pressing plate 27 is fixedly connected with limit block 23, and the top of pressing plate 27 is fixedly connected with one-stage guide pipe 20. One-stage guide pipe 20 is used to fix and guide two-stage guide pipe 17. One-stage sliding sleeve 19 is slidably connected in the inside of one-stage guide pipe 20, and one-stage sliding sleeve 19 is used to guide two-stage guide pipe 17. The top of limit block 23 is in contact with the bottom of one-stage sliding sleeve 19, and limit block 23 is used to buffer and limit two-stage guide pipe 17. One-stage spacer sleeve 18 is fixedly connected in the inside of one-stage sliding sleeve 19, and the outside of one-stage spacer sleeve 18 is slidably connected in the inside of one-stage guide pipe 20. One-stage spacer sleeve 18 is used to limit and guide two-stage guide pipe 17. Two-stage guide pipe 17 is fixedly connected in the inside of one-stage spacer sleeve 18, and two-stage guide pipe 17 is used to connect three-stage guide pipe 14 and one-stage guide pipe 20, and extend the length of mechanism. Two-stage sliding sleeve 16 is slidably connected in the inside of two-stage guide pipe 17, and two-stage sliding sleeve 16 is used to guide three-stage guide pipe 14.

[0030] With reference to Figures 2 to 4The inside of the second sliding sleeve 16 is fixedly connected with the second spacer sleeve 15, which is used for limiting and guiding the third guide pipe 14. The outside of the second spacer sleeve 15 is slidingly connected in the inside of the second guide pipe 17, and the inside of the second spacer sleeve 15 is fixedly connected with the third guide pipe 14. The outside of the third spacer sleeve 12 is slidingly connected in the inside of the third guide pipe 14, which is used for connecting the fourth guide pipe 10 and the second guide pipe 17, and extending the length of the mechanism. The inside of the third guide pipe 14 is slidingly connected with the third sliding sleeve 13, which is used for guiding the fourth guide pipe 10. The inside of the third sliding sleeve 13 is fixedly connected with the third spacer sleeve 12, which is used for limiting and guiding the fourth guide pipe 10. The inside of the third spacer sleeve 12 is fixedly connected with the fourth guide pipe 10, which is used for connecting the fifth guide pipe 6 and the fourth guide pipe 10, and extending the length of the mechanism. The inside of the fourth guide pipe 10 is slidingly connected with the fourth sliding sleeve 9, which is used for guiding the fifth guide pipe 6. The bottom of the fourth sliding sleeve 9 is fixedly connected with the positioning sliding block 11, which plays a role in positioning and guiding the guide pipe. The inside of the fourth sliding sleeve 9 is fixedly connected with the fourth spacer sleeve 8, the outside of which is slidingly connected in the inside of the fourth guide pipe 10. The inside of the fourth spacer sleeve 8 is fixedly connected with the fifth guide pipe 6, the inside of which is fixedly connected with the chain support pipe 7, which is used for connecting the chain 26 and the fifth guide pipe 6. The top of the chain support pipe 7 is fixedly connected with the bottom of the airflow switching block 5. The top of the fifth guide pipe 6 is provided with a blowing assembly for blowing air, which is used for connecting the fixed top blowing assembly and extending the length of the mechanism.

[0031] Referring to Figures 2 to 4 Figures 2 to 4The driving assembly comprises a servo motor 28, which powers the chain wheel 24. The bottom of the servo motor 28 is mounted on the top of the chain wheel mounting seat 25, and the output end of the servo motor 28 is fixedly connected with the chain wheel 24, which is used for driving the chain 26. The outside of the chain wheel 24 is sleeved with the chain 26, one end of the chain 26 is fixedly connected in the inside of the chain box 22, and the other end of the chain 26 is fixedly connected to the bottom of the chain support pipe 7, and the chain 26 is used for supporting the stretching process. The front side of the chain wheel mounting seat 25 is fixedly connected with the chain box 22, and the chain box 22 provides a storage and protection space for the chain 26. The outside of the chain box 22 is mounted with a sensor 21, which is used for sensing whether the chain 26 is in place. The air blowing assembly comprises an air flow switching block 5, which is used for fixing the air blowing nozzle. The bottom of the air flow switching block 5 is fixedly connected to the top of the five-stage guide pipe 6, and the top of the air flow switching block 5 is fixedly connected with the mounting cover plate 4, which is used for fixing and supporting the upper cover. The top of the mounting cover plate 4 is mounted with a rotary air blowing nozzle 3, which is used for blowing air. The top of the mounting cover plate 4 is fixedly connected with a plurality of support columns 2, which play a role in supporting the upper cover. The top of the plurality of support columns 2 is fixedly connected with the air blowing upper cover 1, which makes the air blown out by the air blowing nozzle parallel.

[0032] Working principle: when the multi-stage lifting mechanism works, the servo motor 28 mounted on the top of the chain wheel mounting seat 25 is started, and the output end drives the chain wheel 24 to rotate, thereby driving the chain 26 sleeved outside the chain wheel 24 to move. One end of the chain 26 is connected in the chain box 22, and the other end is connected with the bottom of the chain support pipe 7, and the chain 26 provides support for the stretching of the whole mechanism during transmission. With the movement of the chain 26, the five-stage guide pipe 6 fixed on the chain support pipe 7 starts to rise or fall. Because the five-stage guide pipe 6 is fixed with the chain support pipe 7 inside, and the blowing assembly is arranged on the top of the five-stage guide pipe 6, the blowing assembly can complete the corresponding blowing task during the lifting process. The five-stage guide pipe 6 is connected with the four-stage guide pipe 10 through the four-stage spacer 8, the four-stage guide pipe 10 is connected with the three-stage guide pipe 14 through the three-stage spacer 12, and the three-stage guide pipe 14 is connected with the two-stage guide pipe 17 through the two-stage spacer 15. The four-stage guide pipe 10, the three-stage guide pipe 14 and the two-stage guide pipe 17 are connected with the one-stage guide pipe 20 through the one-stage spacer 18 and the one-stage guide pipe 19. They are matched layer by layer, respectively, and play a role in guiding and limiting the adjacent guide pipe, so as to realize the stable stretching of the multi-stage guide pipe and prolong the stretching length of the mechanism. At the same time, the chain box 22 on the front side of the chain wheel mounting seat 25 provides a storage and protection space for the chain 26, and the sensor 21 outside the chain box 22 can sense whether the chain 26 is in place, so as to ensure the accuracy of the mechanism operation. The pressing plate 27 fixes the chain wheel 24, the limiting block 23 buffers and limits the two-stage guide pipe 17, and ensures the stable and safe operation of the whole mechanism.

[0033] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A multi-stage lifting mechanism comprising a sprocket mount (25) characterised in that: The outside of the chain wheel mounting seat (25) is provided with a driving assembly for providing power, the top of the chain wheel mounting seat (25) is fixedly connected with a pressing plate (27), the top of the pressing plate (27) is fixedly connected with a limiting block (23), the top of the pressing plate (27) is fixedly connected with a primary guide pipe (20), the inside of the primary guide pipe (20) is slidably connected with a primary sliding sleeve (19), the inside of the primary sliding sleeve (19) is fixedly connected with a primary separation sleeve (18), the inside of the primary separation sleeve (18) is fixedly connected with a secondary guide pipe (17), the inside of the secondary guide pipe (17) is slidably connected with a secondary sliding sleeve (16), the inside of the secondary sliding sleeve (16) is fixedly connected with a secondary separation sleeve (15), the inside of the secondary separation sleeve (15) is fixedly connected with a tertiary guide pipe (14), the inside of the tertiary guide pipe (14) is slidably connected with a tertiary sliding sleeve (13), the inside of the tertiary sliding sleeve (13) is fixedly connected with a tertiary separation sleeve (12), the inside of the tertiary separation sleeve (12) is fixedly connected with a quaternary guide pipe (10), the inside of the quaternary guide pipe (10) is slidably connected with a quaternary sliding sleeve (9), the bottom of the quaternary sliding sleeve (9) is fixedly connected with a positioning sliding block (11), the inside of the quaternary sliding sleeve (9) is fixedly connected with a quaternary separation sleeve (8), the inside of the quaternary separation sleeve (8) is fixedly connected with a quinary guide pipe (6), the inside of the quinary guide pipe (6) is fixedly connected with a chain support pipe (7), and the top of the quinary guide pipe (6) is provided with a blowing assembly for blowing.

2. The multi-stage lift mechanism of claim 1, wherein: The driving assembly comprises a servo motor (28), the bottom of the servo motor (28) is mounted at the top of the chain wheel mounting seat (25), the output end of the servo motor (28) is fixedly connected with a chain wheel (24), the outside of the chain wheel (24) is sleeved with a chain (26), and the front side of the chain wheel mounting seat (25) is fixedly connected with a chain box (22).

3. The multi-stage lift mechanism of claim 1, wherein: The blowing assembly comprises an airflow switching block (5), the bottom of the airflow switching block (5) is fixedly connected at the top of the quinary guide pipe (6), the top of the airflow switching block (5) is fixedly connected with a mounting cover plate (4), the top of the mounting cover plate (4) is mounted with a rotary blowing nozzle (3), the top of the mounting cover plate (4) is fixedly connected with a plurality of support columns (2), and the top of the plurality of support columns (2) is fixedly connected with a blowing upper cover (1).

4. The multi-stage lift mechanism of claim 2, wherein: One end of the chain (26) is fixedly connected in the inside of the chain box (22), and the other end of the chain (26) is fixedly connected at the bottom of the chain support pipe (7).

5. The multi-stage lift mechanism of claim 3, wherein: The top of the chain support pipe (7) is fixedly connected at the bottom of the airflow switching block (5), and the outside of the quaternary separation sleeve (8) is slidably connected in the inside of the quaternary guide pipe (10).

6. The multi-stage lift mechanism of claim 1, wherein: The outside of the tertiary separation sleeve (12) is slidably connected in the inside of the tertiary guide pipe (14), and the outside of the secondary separation sleeve (15) is slidably connected in the inside of the secondary guide pipe (17).

7. The multi-stage lift mechanism of claim 1, wherein: The outer sliding connection of the primary spacer sleeve (18) is in the interior of the primary guide pipe (20), and the top of the limiting block (23) is in contact with the bottom of the primary sliding sleeve (19).

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