Safe self-locking elevator

Abstract

The utility model relates to a safe self-locking elevator which comprises an elevator moving base, a connecting structure is further provided with a self-locking structure for achieving self-locking, and long openings penetrating into the elevator moving base are symmetrically formed in the upper end face of the elevator moving base. The surface of the connecting column is provided with a plane, a mounting plate is mounted on the plane, a sliding block is movably mounted on the upper end face of the sliding rail, the lower end face of the mounting plate is connected with the sliding block, and a first oil cylinder is mounted on the upper end face of the mounting plate. The telescopic end of the first oil cylinder penetrates through the square opening and extends into the elevator moving base, protruding blocks are installed on the inner side face of the elevator moving base and located on the two sides of the long opening, clamping plates are installed at the end of the telescopic end, and a hydraulic power unit is installed in the elevator moving base. The hydraulic power unit is connected with the first oil cylinder through a pressure pipe. The self-locking structure of the elevator solves the problem that a self-locking structure in an existing elevator is complex in structure.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically a safety self-locking lifting machine. Background Technology

[0002] Lifts have a wide range of applications, especially in construction sites. They typically use hydraulic cylinders to drive scissor lifts to raise and lower the platform, thus meeting construction needs at different heights. However, there are certain safety hazards during use. If the hydraulic cylinders are damaged, the platform will drop suddenly, which can easily cause a safety accident.

[0003] Therefore, to solve the above problems, modern lifting platforms are equipped with self-locking structures. However, such structures often have certain problems, namely, they are complex and difficult to implement during manufacturing. Furthermore, while existing lifting platforms that use bolts to achieve scissor lift operation can achieve self-locking, this method causes too much wear on the lead screw. On the other hand, lifting platforms that use hydraulic cylinders have complex structures to achieve self-locking. Therefore, in existing lifting platforms driven by hydraulic cylinders, there is a requirement that the self-locking function cannot be achieved with a simple structure.

[0004] Based on the above, in order to address the issue of achieving a self-locking function in a simple structure for a lift driven by a hydraulic cylinder, and to solve the problem of the cumbersome self-locking structure of existing lifts, a safe self-locking lift is proposed to overcome the technical problems of existing lifts. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a safe self-locking lift, which solves the problem of complex self-locking structures in existing lifts.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a safe self-locking lifting platform, comprising a lifting platform movable base, a connecting structure installed on the upper end face of the lifting platform movable base, a scissor lift rod movably mounted on the connecting structure, a lifting platform installed on the upper end face of the scissor lift rod, and a self-locking structure for achieving self-locking, the self-locking structure comprising a slide rail, a connecting column, a mounting plate, a first hydraulic cylinder, a protrusion, and a clamping plate; wherein the upper end face of the lifting platform movable base has a symmetrically formed elongated opening penetrating into the interior of the lifting platform movable base, and the slide rail is installed on the upper end face of the lifting platform movable base at the elongated opening. On both sides of the opening, connecting columns are fixedly installed on the connecting structure. The surface of the connecting columns has a flat surface, on which an mounting plate is installed. A slider is movably installed on the upper end face of the slide rail. The lower end face of the mounting plate is connected to the slider. A first hydraulic cylinder is installed on the upper end face of the mounting plate. The telescopic end of the first hydraulic cylinder extends through the square opening into the interior of the moving base of the elevator. A protrusion is installed on the inner side of the moving base of the elevator, and the protrusion is located on both sides of the elongated opening. A clamping plate is installed at the end of the telescopic end. A hydraulic power unit is also installed inside the moving base of the elevator. The hydraulic power unit is connected to the first hydraulic cylinder through a pressure pipe.

[0007] Furthermore, the cross-section of the protrusion is L-shaped, and the upper surface of the clamping plate is provided with a groove corresponding to the protrusion. The corner of the protrusion extending from the lower surface of the protrusion is rounded.

[0008] Furthermore, the connection structure includes a U-shaped frame, a connecting seat, a sliding block, and a connecting shaft; the U-shaped frame is symmetrically installed on the upper end face of the moving base of the elevator, the sliding block is movably installed in the inner side of the U-shaped frame, the connecting seat is also symmetrically installed on the upper end face of the moving base of the elevator, the two sets of connecting seats are connected together by a shaft, the two sets of sliding blocks are connected by a connecting shaft, the connecting column is symmetrically installed on the surface of the connecting shaft, and the scissor lift rod is movably installed on the surface of the connecting shaft.

[0009] As a preferred technical solution, a second hydraulic cylinder is symmetrically mounted on the shaft surface, and the telescopic end of the second hydraulic cylinder is connected to the scissor lift rod.

[0010] Furthermore, a load-bearing frame is installed on the upper surface of the U-shaped frame. In the initial state, the upper surface of the load-bearing frame is in contact with the lower surface of the lifting platform. Secondly, a ladder is installed on the right side of the moving base of the elevator.

[0011] Compared with the prior art, this utility model provides a safe self-locking lifting platform, which has the following beneficial effects:

[0012] 1. First, it should be noted that when each hydraulic pipeline of the hydraulic power unit in this lifting platform is connected to the corresponding oil cylinder, the pressure pipelines of each group are effectively isolated. This ensures that if the pressure of one group of oil cylinders is damaged, it will not affect the pressure of other oil cylinders. When the lifting platform is raised and lowered by the first oil cylinder, the clamping plate will not contact the protrusion. When the lifting platform stops running or the second oil cylinder has a pressure leak or is damaged, when the pressure sensor detects it, the first oil cylinder drives the clamping plate to retract, so that the clamping plate contacts the protrusion. With the help of the friction between the two, the lifting platform will stop descending, thus ensuring the safety of personnel. Secondly, the self-locking structure of this lifting platform is relatively simple and not complicated, making it easy to manufacture in actual production. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention;

[0014] Figure 2 This utility model Figure 1 A schematic diagram of the right-side view structure;

[0015] Figure 3 This utility model Figure 1 A schematic diagram of the three-dimensional structure;

[0016] Figure 4 This utility model Figure 1 A schematic diagram of the three-dimensional structure;

[0017] Figure 5 This is a schematic diagram of the movable base structure of the lifting platform of this utility model;

[0018] Figure 6 This is a schematic diagram of the hydraulic power unit structure of this utility model;

[0019] Figure 7 This utility model Figure 5 A magnified schematic diagram of the structure at point A;

[0020] Figure 8 This utility model Figure 6 A magnified schematic diagram of the structure at point B.

[0021] In the diagram: 1. Lift mobile base; 2. Ladder; 3. Scissor lift rod; 4. Lifting platform; 5. Bearing frame; 6. Slide rail; 7. U-shaped frame; 8. Connecting seat; 9. Sliding block; 10. Connecting shaft; 11. Connecting column; 12. Mounting plate; 13. First hydraulic cylinder; 14. Protrusion block; 15. Clamping plate; 16. Second hydraulic cylinder; 17. Hydraulic power unit. Detailed Implementation

[0022] 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.

[0023] Example

[0024] Please see Figure 1-8 This utility model provides the following technical solution: a safe self-locking lifting platform, including a lifting platform movable base 1, a connecting structure installed on the upper end surface of the lifting platform movable base 1, a scissor lift rod 3 movably installed on the connecting structure, a lifting platform 4 installed on the upper end surface of the scissor lift rod 3, and a self-locking structure for self-locking, which includes a slide rail 6, a connecting column 11, a mounting plate 12, a first hydraulic cylinder 13, a protrusion 14, and a clamping plate 15; wherein the upper end surface of the lifting platform movable base 1 has symmetrically opened elongated openings penetrating into the interior of the lifting platform movable base 1, and the slide rail 6 is installed on both sides of the elongated opening on the upper end surface of the lifting platform movable base 1, connecting... The column 11 is fixedly installed on the connecting structure. A flat surface is opened on the surface of the connecting column 11. An mounting plate 12 is installed on the flat surface. A slider is movably installed on the upper end surface of the slide rail 6. The lower end surface of the mounting plate 12 is connected to the slider. A first hydraulic cylinder 13 is installed on the upper end surface of the mounting plate 12. The telescopic end of the first hydraulic cylinder 13 extends through the square opening into the interior of the elevator moving base 1. A protrusion 14 is installed on the inner side of the elevator moving base 1, and the protrusion 14 is located on both sides of the elongated opening. A clamping plate 15 is installed at the end of the telescopic end. A hydraulic power unit 17 is also installed inside the elevator moving base 1. The hydraulic power unit 17 is connected to the first hydraulic cylinder 13 through a pressure pipe.

[0025] In this implementation plan, the specific working principle is as follows: First, it should be noted that when each set of hydraulic lines in the hydraulic power unit 17 of this lifting platform is connected to the corresponding oil cylinder, the pressure lines of each set are effectively isolated. This ensures that if one set of oil cylinders is damaged, it will not affect the pressure of other oil cylinders. During the operation of the lifting platform, if the second oil cylinder 16 experiences pressure leakage or pressure leakage due to damage, after detection by the pressure sensor, its first oil cylinder 13 retracts, causing its clamping plate 15 to contact the protrusion 14. Through the friction between the two, the lifting platform 4 stops descending, thereby ensuring the safety of the construction personnel on the lifting platform 4. The overall self-locking structure is simple and uncomplicated. When the second oil cylinder 16 drives the scissor lift rod 3 to lift the lifting platform 4, the slider is connected to the mounting plate 12, which ensures the stability of the mounting plate 12 during movement.

[0026] Based on the above, in order to increase the friction between the protrusion 14 and the clamping plate 15, please refer to the following for details. Figure 8 As can be seen, the protrusion 14 has an L-shaped cross-section, and the upper surface of the clamping plate 15 is provided with a groove, which corresponds to the protrusion 14. The corner of the protrusion extending from the lower surface of the protrusion 14 is rounded, which increases the contact area between the protrusion 14 and the clamping plate 15, thereby effectively increasing the friction between the two.

[0027] For details on the connection structure, please refer to [link / reference needed]. Figure 5 and Figure 7 As can be seen, the connecting structure includes a U-shaped frame 7, a connecting seat 8, a sliding block 9, and a connecting shaft 10. The U-shaped frame 7 is symmetrically installed on the upper surface of the elevator moving base 1. The sliding block 9 is movably installed in the inner side of the U-shaped frame 7. The connecting seat 8 is also symmetrically installed on the upper surface of the elevator moving base 1. The two sets of connecting seats 8 are connected together by a shaft. The two sets of sliding blocks 9 are connected by a connecting shaft 10. The connecting column 11 is symmetrically installed on the surface of the connecting shaft 10. The scissor lift rod 3 is movably installed on the surface of the connecting shaft 10.

[0028] See Figure 3-5 As can be seen, a second hydraulic cylinder 16 is symmetrically installed on the shaft surface. The telescopic end of the second hydraulic cylinder 16 is connected to the scissor lift rod 3. When the second hydraulic cylinder 16 extends, it drives the scissor lift rod 3 to extend upward, thereby driving the lifting platform 4 to rise.

[0029] For details on providing support for lifting platform 4, please refer to [link / reference needed]. Figure 1-3 As can be seen, a load-bearing frame 5 is also installed on the upper surface of the U-shaped frame 7. In the initial state, the upper surface of the load-bearing frame 5 is in contact with the lower surface of the lifting platform 4. Secondly, a ladder 2 is installed on the right side of the moving base 1 of the elevator to facilitate construction personnel to climb onto the lifting platform 4.

[0030] It should also be noted that the connection between the lifting platform 4 and the scissor lift 3 is the same as that in the existing lifting machines and no improvements have been made, so it will not be described in detail.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A safety self-locking lifting platform, comprising a lifting platform movable base (1), a connecting structure installed on the upper end face of the lifting platform movable base (1), a scissor lift rod (3) movably installed on the connecting structure, and a lifting platform (4) installed on the upper end face of the scissor lift rod (3), characterized in that: A self-locking structure is also installed on the connecting structure to achieve self-locking. The self-locking structure includes a slide rail (6), a connecting column (11), a mounting plate (12), a first hydraulic cylinder (13), a protrusion (14), and a clamping plate (15). The upper end face of the elevator moving base (1) is symmetrically provided with an elongated opening that penetrates into the interior of the elevator moving base (1). The slide rail (6) is installed on both sides of the elongated opening on the upper end face of the elevator moving base (1). The connecting column (11) is fixedly installed on the connecting structure. The surface of the connecting column (11) is provided with a flat surface, on which the mounting plate (12) is installed. A slider is movably installed on the upper end face of the mounting plate (12), and the lower end face of the mounting plate (12) is connected to the slider. A first oil cylinder (13) is installed on the upper end face of the mounting plate (12). The telescopic end of the first oil cylinder (13) extends through the square opening into the inside of the elevator moving base (1). A protrusion (14) is installed on the inner side of the elevator moving base (1), and the protrusion (14) is located on both sides of the elongated opening. A clamping plate (15) is installed at the end of the telescopic end. A hydraulic power unit (17) is also installed inside the elevator moving base (1). The hydraulic power unit (17) is connected to the first oil cylinder (13) through a pressure pipe.

2. The safety self-locking elevator according to claim 1, characterized in that: The protrusion (14) has an L-shaped cross-section, and the upper end face of the clamping plate (15) is provided with a groove corresponding to the protrusion (14). The corner of the protrusion extending from the lower end face of the protrusion (14) is rounded.

3. A safety self-locking elevator according to claim 1, characterized in that: The connection structure includes a U-shaped frame (7), a connecting seat (8), a sliding block (9), and a connecting shaft (10). The U-shaped frame (7) is symmetrically installed on the upper surface of the elevator moving base (1). The sliding block (9) is movably installed in the inner side of the U-shaped frame (7). The connecting seat (8) is also symmetrically installed on the upper surface of the elevator moving base (1). The two sets of connecting seats (8) are connected together by a shaft. The two sets of sliding blocks (9) are connected by a connecting shaft (10). The connecting column (11) is symmetrically installed on the surface of the connecting shaft (10). The scissor lift rod (3) is movably installed on the surface of the connecting shaft (10).

4. A safety self-locking elevator according to claim 3, characterized in that: A second hydraulic cylinder (16) is symmetrically mounted on the shaft surface. The extension end of the second hydraulic cylinder (16) is connected to the scissor lift rod (3). The hydraulic power unit (17) is connected to the second hydraulic cylinder (16) through a pressure pipe. A pressure sensor is also installed on the pipeline.

5. A safety self-locking elevator according to claim 3, characterized in that: The upper end of the U-shaped frame (7) is also equipped with a bearing frame (5). In the initial state, the upper end of the bearing frame (5) is in contact with the lower end of the lifting platform (4). Then, a ladder (2) is installed on the right side of the moving base (1) of the elevator.

Images