Compact lifting platform driven by electric cylinder

Abstract

The utility model provides a compact type lifting platform driven by an electric cylinder, which comprises a mounting bottom plate, a power source, the electric cylinder, a lifting executing mechanism, a supporting platform, a dustproof mechanism and a mechanical limiting mechanism, the power source provides telescopic power for the electric cylinder, and the fixed end of the electric cylinder is hinged with a mounting seat on the mounting bottom plate; the lifting executing mechanism can achieve lifting reciprocating motion of the supporting platform under driving of the electric cylinder, the dustproof mechanism can achieve isolation and dust prevention of the space between the lower portion of the supporting platform and the supporting carrier, and the mechanical limiting mechanism can achieve falling blocking and limiting of the supporting platform. The lifting platform is small in size, can be installed on the AGV to be matched with the AGV to work, and meanwhile is convenient to maintain and overhaul.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting platforms, in particular to a compact electric cylinder driven lifting platform. Background Art

[0002] Some existing small lifting platforms generally use hydraulic cylinders as lifting actuators. Since hydraulic cylinders need to be equipped with hydraulic pump stations, the volume of small lifting platforms is still relatively large. At the same time, there is a problem of oil leakage during long-term operation; AGV carts play an important role in modern industrial automation and logistics systems, with wide applications and diverse functions. AGV carts can perform material handling tasks in environments such as factories, warehouses, or logistics centers. The handling operation space is not very large, resulting in the volume of some existing small lifting platforms still unable to meet the requirements for material handling and lifting of existing AGV carts. Therefore, how to design a compact lifting cart with a very small volume and capable of being installed on an AGV cart is an urgent problem to be solved. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a compact electric cylinder driven lifting platform, which has a small volume and can be installed on an AGV cart to cooperate with it for work. At the same time, the lifting platform is convenient for maintenance and repair.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a compact electric cylinder driven lifting platform, including a mounting base plate, a power source, an electric cylinder, a lifting actuator, a support platform, a dust-proof mechanism, and a mechanical limit mechanism. The mounting base plate is arranged on a support carrier. The power source provides telescopic power for the electric cylinder. The fixed end of the electric cylinder is hinged to a mounting seat on the mounting base plate. The lifting actuator includes two groups of X-shaped support mechanisms, which are distributed front and back relative to each other on the mounting base plate. Each group of X-shaped support mechanisms includes a left support plate and a right support plate, and the middle parts of the left support plate and the right support plate are hinged to each other. The lower left parts of the two left support plates are respectively hinged to the mounting base plate. A first connecting shaft is arranged between the upper right parts of the two left support plates, and both ends of the first connecting shaft are slidably sleeved in the tracks arranged at the lower part of the support platform. The upper left parts of the two right support plates are respectively hinged to the bottom of the support platform. A second connecting shaft is fixedly arranged between the lower right parts of the two right support plates, and both ends of the second connecting shaft are slidably sleeved in the tracks arranged on the mounting base plate. A driving hinge seat is fixedly arranged on the outer side wall of the second connecting shaft. The telescopic end of the electric cylinder is hinged to the driving hinge seat. The dust-proof mechanism can isolate and prevent dust in the space between the lower part of the support platform and the support carrier. The mechanical limit mechanism can block and limit the descent of the support platform.

[0005] Preferably, a third connecting shaft is arranged between the upper left parts of the two right support plates.

[0006] Further, a limit detection plate is arranged on both the left side and the right side of the second connecting shaft, and two photoelectric detection switches are arranged on the mounting base plate and distributed on the left side and the right side of the second connecting shaft, and the photoelectric detection switches can detect the corresponding limit detection plates.

[0007] Further, a first support roller is arranged at both ends of the first connecting shaft, and the first support roller is sleeved in a first U-shaped track arranged at the lower part of the support platform.

[0008] Further, a second support roller is arranged at both ends of the second connecting shaft, and the second support roller is sleeved in a second U-shaped track arranged on the mounting base plate.

[0009] Further, a ∩-shaped mounting strip is arranged around the support frame of the support platform, the lower edge plate of the cover plate on the upper part of the support platform is buckled on the outer side of the corresponding ∩-shaped mounting strip, and a plurality of corresponding through holes are arranged on the ∩-shaped mounting strip and the lower edge plate, and the ∩-shaped mounting strip and the lower edge plate can be fixedly connected by a bolt connection method.

[0010] Further, the dust-proof mechanism is a bellows, the upper part of the bellows is fixedly sleeved on the lower edge plate around the cover plate, and the lower part of the bellows is fixedly connected to the upper plane of the support carrier where the mounting base plate is located.

[0011] Further, the power source includes a controller and a servo motor, the servo motor is used to drive the electric cylinder, the controller is electrically connected to the servo motor, and the photoelectric detection switch is electrically connected to the controller.

[0012] Further, the mechanical limit mechanism includes two support columns, the two support columns are arranged opposite to each other front and back below the support frame, and a rubber block is fixedly arranged on the upper part of each support column.

[0013] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple, and under the condition of reasonable working principle design, it can achieve a small volume design. The small volume of the lifting platform facilitates its installation on an AGV trolley to cooperate with it for work; the electric cylinder and the servo motor operate with low noise and are easy to maintain, which is conducive to reducing the operation and maintenance costs of the lifting platform; the use of two photoelectric detection switches can detect the upper and lower termination positions of the support platform, thereby improving the operation monitoring of the support platform and ensuring operation safety; the use of a mechanical limit mechanism can achieve mechanical limit of the descending termination position of the support platform, ensuring the descending safety of the support platform; the use of a bellows cover can isolate and dust-proof the lower space of the support platform, thereby effectively ensuring the safe operation of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some preferred embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a side view of the overall structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the partial structure of the present utility model;

[0018] Figure 4 is Figure 1 an enlarged view of part A in

[0019] Figure 5 is Figure 2 an enlarged view of part B in

[0020] In the figure: 1 mounting base plate, 11 mounting seat, 12 second U-shaped track, 13 photoelectric detection switch, 21 controller, 22 servo motor, 3 electric cylinder, 41 left support plate, 42 right support plate, 43 first connecting shaft, 431 first support roller, 44 second connecting shaft, 441 driving hinge seat, 442 second support roller, 443 limit detection plate, 45 third connecting shaft, 5 support platform, 51 support frame, 52 cover plate, 521 lower edge plate, 53 ∩-shaped mounting strip, 54 first U-shaped track, 55 through hole, 61 support column, 62 rubber block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will combine specific embodiments and the attached Figures 1 - 5, the technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only some preferred embodiments of the present utility model, rather than all embodiments. Those skilled in the art can make similar deformations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0022] A compact electric cylinder-driven lifting platform (as Figure 1 shown), including a mounting base plate 1, a power source, an electric cylinder 3, a lifting execution mechanism, a support platform 5, a dust-proof mechanism, and a mechanical limit mechanism. The mounting base plate 1 is used to realize the installation and fixation of the entire lifting platform at the corresponding installation position. For example, in actual applications, the mounting base plate 1 is arranged on a support carrier, and the support carrier can be the vehicle body of an AGV cart. The power source provides telescopic power for the electric cylinder 3. The electric cylinder 3 is a known technical product in the prior art and can perform linear reciprocating telescopic motion under the drive of a motor. The fixed end of the electric cylinder 3 is hingedly connected to the mounting seat 11 on the mounting base plate 1, and the fixed end of the electric cylinder 3 can rotate relative to the mounting seat 11. The lifting execution mechanism includes two sets of X-shaped support mechanisms. The two sets of X-shaped support mechanisms are distributed front and rear relative to each other on the mounting base plate 1. Each set of X-shaped support mechanisms includes a left support plate 41 and a right support plate 42, and the middle parts of the left support plate 41 and the right support plate 42 are hingedly connected. The lower left parts of the two left support plates 41 are respectively hingedly connected to the mounting base plate 1. A first connecting shaft 43 is arranged between the upper right parts of the two left support plates 41, and both ends of the first connecting shaft 43 are slidably sleeved in the tracks arranged at the lower part of the support platform 5. By the connection function of the first connecting shaft 43, the synchronous motion reliability of the upper right parts of the two left support plates 41 can be improved. The upper left parts of the two right support plates 42 are respectively hingedly connected to the bottom of the support platform 5. A second connecting shaft 44 is fixedly arranged between the lower right parts of the two right support plates 42, and both ends of the second connecting shaft 44 are slidably sleeved in the tracks arranged on the mounting base plate 1. A driving hinge seat 441 is fixedly arranged on the outer side wall of the second connecting shaft 44. The telescopic end of the electric cylinder 3 is hingedly connected to the driving hinge seat 441. In actual applications, when the electric cylinder 3 performs telescopic motion, it drives the second connecting shaft 44 to perform horizontal reciprocating movement, and finally realizes the lifting motion of the support platform 5. The dust-proof mechanism can isolate and prevent dust in the space between the lower part of the support platform 5 and the support carrier. The mechanical limit mechanism can realize the downward blocking limit of the support platform 5, that is, during the downward movement of the support platform 5, when the support platform 5 contacts the limiting part of the mechanical limit mechanism, due to the blocking effect of the mechanical limit mechanism, the support platform 5 cannot continue to move downward, thereby realizing the downward limit protection of the support platform 5.

[0023] In practical applications, to improve the movement stability of the upper left parts of the two right support plates 42, a third connecting shaft 45 is provided between the upper left parts of the two right support plates 42 here.

[0024] In practical applications, to facilitate the precise positioning and control of the highest and lowest positions of the support platform 5, a limit detection plate 442 is provided on both the left and right sides of the second connecting shaft 44 here, and two photoelectric detection switches 13 are provided on the mounting base plate 1 and are distributed on the left and right sides of the second connecting shaft 44, and the photoelectric detection switches 13 can detect the corresponding limit detection plates 442. Specifically, during the reciprocating movement of the second connecting shaft 44 driven by the electric cylinder 3, when the limit detection plate 442 on the right side of the second connecting shaft 44 is detected by the corresponding photoelectric detection switch 13, it indicates that the support platform 5 has descended to the lowest position at this time. Therefore, at this time, the descent of the support platform 5 is stopped by controlling the electric cylinder 3; when the limit detection plate 442 on the left side of the second connecting shaft 44 is detected by the corresponding photoelectric detection switch 13, it indicates that the support platform 5 has risen to the highest position at this time. Therefore, at this time, the ascent of the support platform 5 is stopped by controlling the electric cylinder 3.

[0025] The specific implementation method for the upper right parts of the two left support plates 41 to be able to slide relative to the support platform 5 is as follows: a first support roller 431 is provided at both ends of the first connecting shaft 43, and the first support roller 431 is sleeved in the first U-shaped track 54 provided at the lower part of the support platform 5; further, the specific implementation method for the lower right parts of the two right support plates to be able to slide relative to the mounting base plate 1 is as follows: a second support roller 442 is provided at both ends of the second connecting shaft 44, and the second support roller 442 is sleeved in the second U-shaped track 12 provided on the mounting base plate 1.

[0026] On the basis of the above embodiments, the specific implementation of the support platform 5 is as follows: ∩-shaped mounting strips 53 are arranged around the support frame 51 of the support platform 5. The lower edge plate 521 of the cover plate 52 on the upper part of the support platform 5 is buckled on the outer side of the corresponding ∩-shaped mounting strip 53. A number of corresponding through holes 55 are provided on the ∩-shaped mounting strip 53 and the lower edge plate 521. The ∩-shaped mounting strip 53 and the lower edge plate 521 can be fixedly connected by means of bolt connection. Specifically, bolts are passed through the through holes 55 on the ∩-shaped mounting strip 53 and the corresponding lower edge plate 521, and then nuts are sleeved on the bolts and tightened, thereby realizing the fixation of the ∩-shaped mounting strip 53 and the lower edge plate 521. Further, the dust-proof mechanism is a bellows. The upper part of the bellows is fixedly sleeved on the lower edge plate 521 around the cover plate 52, and the lower part of the bellows is fixedly connected to the upper plane of the support carrier where the mounting base plate 1 is located. Specifically, the bellows is a square tubular hollow structure. When the ∩-shaped mounting strip 53 and the lower edge plate 521 are fixedly connected by bolts, the upper part of the bellows can be fixedly installed synchronously. When the mounting base plate 1 is installed on the AGV trolley, the bottom of the bellows can be fixed to the vehicle body of the AGV trolley. After the bellows is fixedly installed, the space below the cover plate 52 can be isolated and sealed from the outside, thereby realizing the dust-proof function of the internal operating components.

[0027] On the basis of the above embodiments, the specific implementation of the power source is as follows: The power source includes a controller 21 and a servo motor 22. The servo motor 22 is used to drive the electric cylinder 3. The controller 21 is electrically connected to the servo motor 22, and the photoelectric detection switch 13 is electrically connected to the controller 21. The controller receives the control instructions issued by the staff and the detection information fed back by the photoelectric detection switch 13 to control the operation of the servo motor 22.

[0028] On the basis of the above embodiments, the specific implementation of the mechanical limit mechanism is as follows: The mechanical limit mechanism includes two support columns 61. The two support columns 61 are arranged opposite to each other before and after below the support frame 51. A rubber block 62 is fixedly arranged on the upper part of each support column 61. During the continuous descent of the support frame 51, when the bottom plane of the support frame 51 abuts against the rubber block 62, due to the mechanical blocking effect of the rubber block 62, the support frame 51 will not continue to descend, thereby playing a mechanical limit role.

[0029] In the present utility model, "upper", "lower", "front", "rear", "left", and "right" are relative positions adopted for the convenience of describing the positional relationship, and therefore cannot be understood as absolute positions to limit the protection scope.

[0030] Except for the technical features described in the specification, they are all well-known technologies to those skilled in the art.

[0031] The preferred embodiments and examples of the present utility model have been described in detail in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments and examples. For those of ordinary skill in the art of this technology, without departing from the concept of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A compact electric cylinder-driven lifting platform, characterized in that, It includes an installation base plate, a power source, an electric cylinder, a lifting actuator, a support platform, a dust-proof mechanism, and a mechanical limit mechanism. The installation base plate is arranged on a support carrier. The power source provides telescopic power for the electric cylinder. The fixed end of the electric cylinder is hingedly connected to the mounting seat on the installation base plate. The lifting actuator includes two X-shaped support mechanisms. The two X-shaped support mechanisms are distributed front and back relative to each other on the installation base plate. Each X-shaped support mechanism includes a left support plate and a right support plate, and the middle parts of the left support plate and the right support plate are hingedly connected. The lower left parts of the two left support plates are respectively hingedly connected to the installation base plate. A first connecting shaft is arranged between the upper right parts of the two left support plates, and both ends of the first connecting shaft are slidably sleeved in the tracks arranged at the lower part of the support platform. The upper left parts of the two right support plates are respectively hingedly connected to the bottom of the support platform. A second connecting shaft is fixedly arranged between the lower right parts of the two right support plates, and both ends of the second connecting shaft are slidably sleeved in the tracks arranged on the installation base plate. A driving hinge seat is fixedly arranged on the outer side wall of the second connecting shaft. The telescopic end of the electric cylinder is hingedly connected to the driving hinge seat. The dust-proof mechanism can isolate and prevent dust in the space between the lower part of the support platform and the support carrier. The mechanical limit mechanism can block and limit the descent of the support platform.

2. The compact electric cylinder-driven lifting platform according to claim 1, characterized in that, A third connecting shaft is arranged between the upper left parts of the two right support plates.

3. The compact electric cylinder-driven lifting platform according to claim 2, characterized in that, A limit detection plate is arranged on both the left side and the right side of the second connecting shaft. Two photoelectric detection switches are arranged on the installation base plate and are distributed on the left side and the right side of the second connecting shaft, and the photoelectric detection switches can detect the corresponding limit detection plates.

4. The compact electric cylinder-driven lifting platform according to claim 3, characterized in that, in A first support roller is arranged at both ends of the first connecting shaft, and the first support roller is sleeved in the first U-shaped track arranged at the lower part of the support platform.

5. The compact electric cylinder-driven lifting platform according to claim 4, characterized in that, A second support roller is arranged at both ends of the second connecting shaft, and the second support roller is sleeved in the second U-shaped track arranged on the installation base plate.

6. A compact electric cylinder-driven lifting platform according to claim 5, characterized in that, A ∩-shaped installation strip is arranged around the support frame of the support platform. The lower edge plate of the cover plate on the upper part of the support platform is buckled on the outside of the corresponding ∩-shaped installation strip. A number of corresponding through holes are arranged on the ∩-shaped installation strip and the lower edge plate, and the ∩-shaped installation strip and the lower edge plate can be fixedly connected by means of bolt connection.

7. A compact electric cylinder-driven lifting platform according to claim 6, characterized in that, The dust-proof mechanism is a bellows. The upper part of the bellows is fixedly sleeved on the lower edge plate around the cover plate. The lower part of the bellows is fixedly connected to the upper plane of the support carrier where the installation base plate is located.

8. A compact electric cylinder-driven lifting platform according to claim 6, characterized in that, The power source includes a controller and a servo motor. The servo motor is used to drive the electric cylinder. The controller is electrically connected to the servo motor. The photoelectric detection switch is electrically connected to the controller.

9. A compact electric cylinder-driven lifting platform according to claim 6, characterized in that, The mechanical limit mechanism includes two support columns. The two support columns are arranged front and back relative to each other below the support frame. A rubber block is fixedly arranged on the upper part of each support column.

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