Lifting column capable of bearing large bending moment

Abstract

A lifting column capable of bearing large bending moment belongs to the technical field of lifting motion equipment and comprises a mounting base, a linear actuator is hinged to the upper surface of the mounting base, a mounting upper seat is hinged to the top end of the linear actuator through a pin shaft, and a telescopic inner cylinder part is fixedly mounted on the lower surface of the mounting upper seat. An outer fixing plate is fixedly mounted on the upper surface of the mounting base, the outer fixing plate is located on the outer side of the telescopic inner cylinder part, a positioning guide assembly is mounted between the outer fixing plate and the telescopic inner cylinder part, and a reinforcing corner bracket is fixedly mounted at the upper end of the outer fixing plate. The air spring reduces load and develops tension bearing, the wiring groove and the drag chain assembly achieve internal wiring, the power device can be maintained, the problems that an existing lifting column is insufficient in bending resistance, insufficient in load utilization, disordered in wiring and high in maintenance cost are solved, and engineering applicability and economical efficiency are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of lifting and moving equipment, specifically relating to a lifting column that can withstand large bending moments. Background Technology

[0002] In the field of rising bollard technology, existing standard rising bollards suffer from significant technical bottlenecks: First, their bending load-bearing capacity is insufficient, making it difficult to meet the requirements of large bending moment conditions, necessitating the addition of auxiliary structures for compensation; second, their thrust load capacity is limited when used for thrust applications, and their load-bearing capacity under tensile conditions has not been developed, resulting in insufficient utilization of load capacity; third, the lack of internal wiring space forces the use of external wiring methods, leading to messy on-site wiring and requiring additional protective structures and covering shells, increasing structural complexity; fourth, the lack of maintainability when the power unit is damaged necessitates complete replacement, resulting in high replacement costs and a cumbersome and time-consuming disassembly and assembly process. These shortcomings greatly limit the applicability and economy of existing rising bollards in engineering applications, urgently requiring solutions through technological innovation. Utility Model Content

[0003] The purpose of this utility model is to provide a lifting column that can withstand large bending moments, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A lifting column capable of bearing large bending moments includes a mounting base. A linear actuator is hinged to the upper surface of the mounting base. A mounting upper seat is hinged to the top of the linear actuator via a pin. A telescopic inner cylinder is fixedly mounted on the lower surface of the mounting upper seat. An outer fixing plate is fixedly mounted on the upper surface of the mounting base. The outer fixing plate is located outside the telescopic inner cylinder, and a positioning guide assembly is installed between the outer fixing plate and the telescopic inner cylinder. A reinforcing angle bracket is fixedly mounted on the upper end of the outer fixing plate.

[0006] In the above technical solution, the positioning guide assembly includes two guide rails and two sliders. The guide rails are fixedly installed on the outer surface of the telescopic inner cylinder, and the sliders are fixedly installed on the inner surface of the outer fixing plate, and the sliders are slidably connected to the corresponding guide rails.

[0007] In the above technical solution, a cable routing groove is provided on the upper surface of the mounting base, and a cable chain assembly is installed between the reinforcing angle bracket and the telescopic inner cylinder. The two ends of the cable chain assembly are fixedly connected to the reinforcing angle bracket and the telescopic inner cylinder, respectively.

[0008] In the above technical solution, a gas spring is installed between the mounting base and the mounting upper seat. The top end of the gas spring 7 is hinged to the lower surface of the mounting upper seat via a pin. A gas spring universal rotating seat is fixedly installed on the upper surface of the mounting base. The interior of the gas spring universal rotating seat is spherical. The lower end of the gas spring 7 is universally hinged to the spherical interior of the gas spring universal rotating seat.

[0009] In the above technical solution, an inner protective cover is fixedly installed on the upper surface of the mounting base, and the inner protective cover is located outside the outer fixing plate. An outer protective cover is fixedly installed on the upper surface of the mounting seat, and the outer protective cover is located outside the inner protective cover.

[0010] The advantages of this utility model for a lifting column capable of bearing large bending moments compared to existing technologies are as follows:

[0011] This invention effectively improves the lifting accuracy of the telescopic inner cylinder by sliding the guide rail and slider in the positioning guide assembly, enabling it to withstand large bending moment movements. This solves the problem of insufficient bending load capacity in existing lifting columns, eliminating the need for additional auxiliary structures. Secondly, the gas spring 7 can preemptively offset the force generated by the load of the lifting column, reducing the load force on the linear actuator 4. This not only improves the load capacity in thrust applications but also enhances the load capacity under tensile conditions, fully utilizing the load capacity. Furthermore, the use of the wiring channel and cable chain assembly enables internal routing of the linear actuator's electrical connection wires, eliminating the need for additional housing cover, making the overall device simpler, avoiding messy wiring on site, and reducing structural complexity. Finally, in case of power unit failure, there is no need for complete replacement, reducing replacement costs. The disassembly and assembly process is relatively simple, improving maintainability and greatly enhancing the applicability and economy of the lifting column in engineering applications. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0014] Figure 3 This is a schematic diagram of the linear actuator structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the slider structure of this utility model.

[0016] Figure 5 This is a schematic diagram of the structure of this utility model after the protective cover is installed.

[0017] Figures 1-5The components include: 1. Mounting base; 11. Gas spring universal rotating seat; 2. Telescopic inner cylinder; 3. Mounting upper seat; 31. Cable tray; 4. Linear actuator; 5. Outer fixing plate; 51. Reinforcing angle bracket; 6. Positioning guide assembly; 61. Guide rail; 62. Slider; 7. Gas spring; 8. Inner protective cover; 9. Outer protective cover. Detailed Implementation

[0018] 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.

[0019] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-5 This utility model provides a technical solution:

[0020] A lifting column capable of bearing large bending moments includes a mounting base 1. A linear actuator 4 is hinged to the upper surface of the mounting base 1. A mounting upper seat 3 is hinged to the top of the linear actuator 4 via a pin. A telescopic inner cylinder 2 is fixedly mounted on the lower surface of the mounting upper seat 3. An outer fixing plate 5 is fixedly mounted on the upper surface of the mounting base 1. The outer fixing plate 5 is located outside the telescopic inner cylinder 2, and a positioning guide assembly 6 is installed between the outer fixing plate 5 and the telescopic inner cylinder 2. A reinforcing angle bracket 51 is fixedly mounted on the upper end of the outer fixing plate 5. The reinforcing angle bracket 51 is used to reinforce the strength of the outer fixing plate 5.

[0021] It should be noted that the positioning guide assembly 6 includes two guide rails 61 and two sliders 62. The guide rails 61 are fixedly installed on the outer surface of the telescopic inner cylinder 2, and the sliders 62 are fixedly installed on the inner surface of the outer fixing plate 5. The sliders 62 are slidably connected to the corresponding guide rails 61.

[0022] The outer fixing plate 5 is slidably connected to the telescopic inner cylinder 2 through the cooperation of the slider 62 and the guide rail 61, which can improve the lifting accuracy of the telescopic inner cylinder 2 and withstand large bending moment movements.

[0023] In addition, a cable routing groove 31 is provided on the upper surface of the mounting base 3. A cable chain assembly 52 is installed between the reinforcing angle bracket 51 and the telescopic inner cylinder 2. The two ends of the cable chain assembly 52 are fixedly connected to the reinforcing angle bracket 51 and the telescopic inner cylinder 2, respectively. By using the cooperation of the cable routing groove 31 and the cable chain assembly 52, the electrical connection wire of the linear actuator 4 can be routed from the inside without the need for an additional housing cover, making the overall device simpler.

[0024] In addition, a gas spring 7 is installed between the mounting base 1 and the mounting upper seat 3. The top end of the gas spring 7 is hinged to the lower surface of the mounting upper seat 3 by a pin. A gas spring universal rotating seat 11 is fixedly installed on the upper surface of the mounting base 1. The interior of the gas spring universal rotating seat 11 is spherical. The lower end of the gas spring 7 is universally hinged to the spherical interior of the gas spring universal rotating seat 11. The gas spring 7 is used to counteract the force generated by the load of the lifting column in advance, reduce the load force of the linear actuator 4, and thus improve the service life of the lifting column.

[0025] Finally, to ensure the aesthetics of the lifting column product, an inner guard 8 can be fixedly installed on the upper surface of the mounting base 1 by bolts. The inner guard 8 is located outside the outer fixing plate 5. An outer guard 9 can be fixedly installed on the upper surface of the mounting seat 3 by bolts. The outer guard 9 is located outside the inner guard 8.

[0026] Working principle: The linear actuator 4, as the active driving element, realizes the telescopic movement through power control. The output force at its upper and lower ends forms a force flow transmission chain through the pin shaft, which acts on the mounting base 1 and the mounting upper seat 3 respectively. At the same time, the gas spring 7, with its constant preload in the extension direction, forms a nonlinear elastic support system through the pin shaft of the gas spring 7 and the gas spring universal rotating seat 11, synchronously transmitting the force to the mounting base 1 and the mounting upper seat 3. Since the mounting base 1 and the mounting upper seat 3 are rigidly connected to the outer fixed plate 5 and the telescopic inner cylinder 2 respectively, under the coupling action of the driving force of the linear actuator 4 and the thrust of the gas spring 7, the lifting column realizes the vertical lifting movement.

[0027] When the system encounters an off-center bending moment, the positioning guide component 6 forms a guiding constraint mechanism between the outer fixed plate 5 and the telescopic inner cylinder 2, and uses its bending moment resistance to withstand the off-center load and maintain system stability. From a mechanical modeling perspective, the system thrust is the vector sum of the driving force of the linear actuator 4 and the force of the gas spring 7, and the tension is the algebraic difference between the two. Considering that the lifting column is often in a loaded state in actual engineering applications, the gas spring 7 preloads to balance the load weight in advance, effectively reducing the dynamic load amplitude of the linear actuator 4, and thus improving the mechanical life of the lifting column by reducing the fatigue damage of the drive components.

Claims

1. A lifting column capable of bearing large bending moments, characterized in that, The system includes a mounting base (1), on which a linear actuator (4) is hingedly mounted. The top of the linear actuator (4) is hingedly mounted with a mounting seat (3) via a pin. A telescopic inner cylinder (2) is fixedly mounted on the lower surface of the mounting seat (3). An outer fixing plate (5) is fixedly mounted on the upper surface of the mounting base (1). The outer fixing plate (5) is located outside the telescopic inner cylinder (2), and a positioning guide assembly (6) is installed between the outer fixing plate (5) and the telescopic inner cylinder (2). A reinforcing bracket (51) is fixedly mounted on the upper end of the outer fixing plate (5).

2. The lifting column for bearing large bending moments according to claim 1, characterized in that, The positioning guide assembly (6) includes two guide rails (61) and two sliders (62). The guide rails (61) are fixedly installed on the outer surface of the telescopic inner cylinder (2), and the sliders (62) are fixedly installed on the inner surface of the outer fixing plate (5). The sliders (62) are slidably connected to the corresponding guide rails (61).

3. A lifting column for bearing large bending moments according to claim 2, characterized in that, The upper surface of the mounting base (3) is provided with a cable routing groove (31). A cable chain assembly (52) is installed between the reinforcing angle bracket (51) and the telescopic inner cylinder (2). The two ends of the cable chain assembly (52) are fixedly connected to the reinforcing angle bracket (51) and the telescopic inner cylinder (2) respectively.

4. A lifting column for bearing large bending moments according to claim 3, characterized in that, A gas spring (7) is installed between the mounting base (1) and the mounting upper seat (3). The top end of the gas spring (7) is hinged to the lower surface of the mounting upper seat (3) by a pin. A gas spring universal rotating seat (11) is fixedly installed on the upper surface of the mounting base (1). The interior of the gas spring universal rotating seat (11) is spherical. The lower end of the gas spring (7) is universally hinged to the spherical interior of the gas spring universal rotating seat (11).

5. A lifting column for bearing large bending moments according to claim 1, characterized in that, An inner cover (8) is fixedly installed on the upper surface of the mounting base (1), and the inner cover (8) is located outside the outer fixing plate (5). An outer cover (9) is fixedly installed on the upper surface of the mounting seat (3), and the outer cover (9) is located outside the inner cover (8).

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