Adjustable full-automatic four-section lifting column

Abstract

The utility model discloses a full -automatic four section lifting column of adjustable, related to lifting column technical field, and this utility model discloses a bottom plate, the upper surface fixedly connected with transmission box of bottom plate, the upper surface one side of transmission box is fixed with lifting column subassembly, the inside of lifting column subassembly is inserted with drive screw rod, the bottom of outer column is fixedly connected with transmission box, the outer surface of drive screw rod is close to the inner wall screw connection of first lifting column one side, the outer surface key connection of drive screw rod has first hollow screw rod, the outer surface key connection of first hollow screw rod has second hollow screw rod, the outer surface screw thread of second hollow screw rod is screwed and is connected with third lifting column, and the utility model discloses a lifting column subassembly, drive screw rod, servo motor etc. cooperation of parts is used to reach the effect of improving lifting synchronous efficiency and the effect that convenient electric control regulation.

Description

Technical Field

[0001] This utility model relates to the field of rising bollard technology, specifically an adjustable fully automatic four-section rising bollard. Background Technology

[0002] Rising bollards (also known as rising bollards, crash barriers, or isolation bollards) are columnar security and control devices that can be raised and lowered mechanically, electrically, or hydraulically. They are usually installed vertically below ground or on the ground surface. Their core function is to dynamically intercept, allow, or isolate vehicles and pedestrians in specific areas, serving both safety protection and traffic management purposes. They are widely used in urban traffic, park security, commercial venues, and other scenarios.

[0003] Traditional multi-section lifting bollards often suffer from asynchronous lifting and extension of individual sections due to unreasonable transmission structure design. Traditional multi-section lifting bollards mostly use single-stage transmission or step-by-step drive structures. For example, some products use a single screw to drive a single section of the bollard, which then drives the extension and retraction of subsequent sections. This easily leads to a step-by-step delay problem of "raising one section first, then raising the second section," resulting in poor synchronization and low extension and retraction efficiency. Furthermore, some lifting bollards rely on hydraulic or pneumatic drive systems, requiring the laying of hydraulic pipelines, air pipes, and supporting pump stations. Installation requires large-scale excavation and wiring, resulting in long construction periods and high costs. Utility Model Content

[0004] To address the issues of poor synchronization in lifting, low efficiency, and reliance on hydraulic or pneumatic systems for some lifting bollards, this invention aims to provide an adjustable, fully automatic four-section lifting bollard.

[0005] To solve the above technical problems, this utility model adopts the following technical solution: an adjustable fully automatic four-section lifting column, including a base plate, a transmission box fixedly connected to the upper surface of the base plate, a lifting column assembly fixedly mounted on one side of the upper surface of the transmission box, a servo motor fixedly mounted on the other side of the upper surface of the transmission box, a drive screw inserted inside the lifting column assembly, the output end of the servo motor being drivenly connected to the drive screw, the lifting column assembly including an outer column, the bottom end of the outer column being fixedly connected to the transmission box, a first lifting column slidably connected to the inner surface of the outer column, a second lifting column slidably connected to the inner surface of the first lifting column, a third lifting column slidably connected to the inner surface of the second lifting column, the outer surface of the drive screw near the first lifting column being threadedly connected to the inner wall of the first lifting column, a first hollow screw being keyed to the outer surface of the drive screw, the threaded portion of the outer surface of the first hollow screw being threadedly connected to the inner wall of one end of the second lifting column, the outer surface of the first hollow screw being keyed to the second hollow screw, and a third lifting column being threadedly sleeved at the threaded portion of the outer surface of the second hollow screw.

[0006] Preferably, the outer surfaces of the driving screw and the first hollow screw are provided with multiple keyways, the outer surface of the driving screw and the inner surface of the second lifting column are sleeved by multiple keyways, and the outer surface of the first hollow screw and the inner surface of the second hollow screw are sleeved by multiple keyways.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up a lifting column assembly and a transmission combination of servo motor, driving gear, and driven gear, and multi-stage screws that rotate synchronously through key connections, respectively forming threaded engagements with the first, second, and third lifting columns, converts rotational motion into axial linear motion, enabling multiple column sections to extend or retract simultaneously, avoiding the delay problem of single-section step-by-step lifting. Through the precise speed control of the servo motor, pure electric control is achieved, ensuring that the speed of the lifting action is controllable and the position is accurate, avoiding the effect of insufficient power. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is a partial structural diagram of the present utility model.

[0011] Figure 3 This is a cross-sectional structural diagram of the lifting column assembly of this utility model.

[0012] Figure 4 This is a cross-sectional structural diagram of the lifting column assembly of this utility model.

[0013] In the diagram: 11. Base plate; 12. Transmission box; 13. Lifting column assembly; 14. Servo motor; 15. Driven gear; 16. Drive gear; 17. Drive screw; 18. Outer column; 19. First lifting column; 21. Keyway; 20. First hollow screw; 22. Second lifting column; 23. Second hollow screw; 24. Third lifting column; 25. First annular groove; 26. First pin; 27. Second annular groove; 28. Second pin. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example: Figures 1-4 As shown, this utility model provides an adjustable fully automatic four-section lifting column. The lifting column uses a base plate 11 as the basic support component. The outer surface of the base plate 11 has multiple fixing holes arranged in a rectangular array. During installation, expansion bolts and other connecting parts can be passed through the fixing holes to firmly connect the base plate 11 to the ground foundation, ensuring that the overall structure does not shift during the lifting process. A transmission box 12 is fixedly connected to the upper surface of the base plate 11, serving as the mounting carrier for the power and transmission components, and also protecting the internal parts. A lifting column assembly 13 is provided on one side of the upper surface of the transmission box 12, which is the core execution part for realizing the telescopic function. A servo motor 14 is fixedly installed on the other side, providing the power source for the entire lifting column. A drive screw 17 is inserted inside the lifting column assembly 13. The output end of the servo motor 14 is connected to the drive screw 17 to form a complete power transmission path.

[0016] The lifting column assembly 13 adopts a nested four-section structure, consisting of an outer column 18, a first lifting column 19, a second lifting column 22, and a third lifting column 24, from the outside in. Each column section slides together to achieve telescopic movement. The outer column 18, as the outermost fixed column, is fixedly connected to the transmission box 12 at its bottom, providing basic support for the entire lifting column assembly 13. Its inner surface slides together with the first lifting column 19, restricting the movement direction of the first lifting column 19. The first lifting column 19 is fitted inside the outer column 18, and its inner surface slides together with the second lifting column 22. Simultaneously, its inner wall is threadedly connected to the outer surface of the drive screw 17 on its side, achieving axial lifting through the rotation of the drive screw 17. The second lifting column 22 is fitted inside the first lifting column 19, and its inner surface slides together with the third lifting column 24. One end of its inner wall engages with the threaded portion of the outer surface of the first hollow screw 20, moving with the first hollow screw 20. The rotation completes the lifting and lowering. The third lifting column 24, as the innermost movable column, is sleeved inside the second lifting column 22. Its inner wall is threadedly connected to the threaded part of the outer surface of the second hollow screw 23. It achieves synchronous extension and retraction under the drive of the second hollow screw 23.

[0017] The outer surface of the drive screw 17 is fixed to the first hollow screw 20 via a key connection to ensure synchronous rotation. The outer surface of the first hollow screw 20 is also fixed to the second hollow screw 23 via a key connection, forming a multi-stage transmission structure from the drive screw 17 to the first hollow screw 20 to the second hollow screw 23. Multiple keyways 21 are provided on the outer surfaces of both the drive screw 17 and the first hollow screw 20. The outer surface of the drive screw 17 is sleeved with the inner surface of the second lifting column 22 via the keyway 21, and the outer surface of the first hollow screw 20 is sleeved with the inner surface of the second hollow screw 23 via the keyway 21, preventing circumferential rotation between the screw and the lifting column and ensuring that the direction of movement is purely axial.

[0018] The transmission box 12 has a driven gear 15 and a driving gear 16 rotatably mounted inside. The output end of the servo motor 14 passes through the transmission box 12 and is fixedly connected to the upper surface of the driving gear 16, driving the driving gear 16 to rotate. The outer surface of the driving gear 16 meshes with the outer surface of the driven gear 15, and the diameter of the driven gear 15 is larger than that of the driving gear 16. The gear meshing achieves speed reduction and torque increase to meet the load requirements of the lifting column. The upper surface of the driven gear 15 is fixedly connected to the bottom end of the drive screw 17, transmitting power to the drive screw 17.

[0019] The first hollow screw 20 has a first pin 26 symmetrically fixedly inserted at one end. The inner surface of the first lifting column 19 near the first pin 26 has a first annular groove 25. The outer surface of the first pin 26 slides in contact with the first annular groove 25. The second hollow screw 23 has a second pin 28 symmetrically fixedly inserted at one end. The inner wall of the second lifting column 22 near the second pin 28 has a second annular groove 27. The outer surface of the second pin 28 slides in contact with the second annular groove 27, further restricting the axial movement of the screw and ensuring stable transmission.

[0020] The inner surfaces of the outer column 18, the first lifting column 19, and the second lifting column 22 are all provided with straight sliding grooves. The outer column 18, the first lifting column 19, the second lifting column 22, and the third lifting column 24 are slidably connected to each other through the straight sliding grooves, which clarifies the movement trajectory of each column section and avoids deviation or torsion during the lifting process.

[0021] Working principle: When the servo motor 14 starts, it outputs torque to provide power for the operation of the entire lifting column. The servo motor 14 drives the drive gear 16 to rotate, and the drive gear 16 meshes with the driven gear 15. Because the diameter of the driven gear 15 is larger than the diameter of the drive gear 16, this gear engagement plays a role in reducing speed and increasing torque, which in turn drives the drive screw 17 to rotate. The inner walls of the drive screw 17 and the first lifting column 19 are connected by threads. When the drive screw 17 rotates, it drives the first lifting column 19 to move axially. At the same time, the drive screw 17 drives the first hollow screw 20 to rotate synchronously via the keyway 21. The inner walls of the first hollow screw 20 and the second lifting column 22 are connected by threads, which causes the second lifting column 22 to also move axially. Then, the first hollow screw 20 drives the second hollow screw 23 to rotate via the keyway 21. The second hollow screw 23 is connected to the inner wall of the third lifting column 24 by threads, thereby pushing the third lifting column 24 to move axially, ultimately achieving synchronous extension and retraction of the first lifting column 19, the second lifting column 22, and the third lifting column 24. The presence of the keyway 21 prevents circumferential rotation between the first hollow screw 20, the second hollow screw 23, and the three lifting columns, ensuring that the movement of the lifting columns is purely axial. The first pin 26 and the second pin 28 respectively cooperate with the first annular groove 25 and the second annular groove 27, ensuring stable rotation and axial movement of the first hollow screw 20 and the second hollow screw 23 during the threaded movement of the first lifting column 19 and the second lifting column 22, preventing torsion of the lifting columns, and ensuring that the lifting columns can complete the lifting action smoothly and accurately.

[0022] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An adjustable fully automatic four-section lifting column, comprising a base plate (11), characterized in that: A transmission box (12) is fixedly connected to the upper surface of the base plate (11). A lifting column assembly (13) is fixedly provided on one side of the upper surface of the transmission box (12). A servo motor (14) is fixedly installed on the other side of the upper surface of the transmission box (12). A drive screw (17) is inserted inside the lifting column assembly (13). The output end of the servo motor (14) is connected to the drive screw (17) in a transmission connection. The lifting column assembly (13) includes an outer column (18), the bottom end of which is fixedly connected to the transmission box (12). A first lifting column (19) is slidably connected to the inner surface of the outer column (18). A second lifting column (22) is slidably connected to the inner surface of the first lifting column (19). A third lifting column (24) is slidably connected to the inner surface of the second lifting column (22). The outer surface of the drive screw (17) near the first lifting column (19) is threadedly connected to the inner wall of the first lifting column (19). A first hollow screw (20) is keyed to the outer surface of the drive screw (17). The threaded part of the outer surface of the first hollow screw (20) is threadedly connected to the inner wall of one end of the second lifting column (22). A second hollow screw (23) is keyed to the outer surface of the first hollow screw (20). A third lifting column (24) is threadedly sleeved at the threaded part of the outer surface of the second hollow screw (23).

2. The adjustable fully automatic four-section lifting column as described in claim 1, characterized in that, The transmission box (12) is equipped with a driven gear (15) and a driving gear (16) for rotation. The output end of the servo motor (14) passes through the transmission box (12) and is fixedly connected to the upper surface of the driving gear (16). The outer surface of the driving gear (16) meshes with the outer surface of the driven gear (15). The upper surface of the driven gear (15) is fixedly connected to the bottom end of the drive screw (17).

3. The adjustable fully automatic four-section lifting column as described in claim 1, characterized in that, The outer surfaces of the drive screw (17) and the first hollow screw (20) are provided with multiple keyways (21). The outer surface of the drive screw (17) is connected to the inner surface of the second lifting column (22) through multiple keyways (21). The outer surface of the first hollow screw (20) is connected to the inner surface of the second hollow screw (23) through multiple keyways (21).

4. The adjustable fully automatic four-section lifting column as described in claim 1, characterized in that, The first hollow screw (20) has a first pin (26) symmetrically fixedly inserted at one end. The inner surface of the first lifting column (19) near the first pin (26) is provided with a first annular groove (25) for the use of two first pins (26). The outer surface of the first annular groove (25) slides and fits against the outer surface of the first pin (26).

5. The adjustable fully automatic four-section lifting column as described in claim 1, characterized in that, The second hollow screw (23) has a second pin (28) symmetrically fixedly inserted at one end. The second lifting column (22) has a second annular groove (27) on the inner wall of one end near the two second pins (28). The outer surface of the second annular groove (27) slides and fits against the outer surface of the second pin (28).

6. The adjustable fully automatic four-section lifting column as described in claim 2, characterized in that, The diameter of the driven gear (15) is larger than the diameter of the driving gear (16).

7. The adjustable fully automatic four-section lifting column as described in claim 1, characterized in that, The inner surfaces of the outer column (18), the first lifting column (19), and the second lifting column (22) are all provided with straight sliding grooves, and the outer column (18), the first lifting column (19), the second lifting column (22), and the third lifting column (24) are all slidably connected to each other through the straight sliding grooves.

8. The adjustable fully automatic four-section lifting column as described in claim 1, characterized in that, The outer surface of the base plate (11) has a plurality of fixing holes arranged in a rectangular array.

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