Miniature lifting platform suitable for high-low temperature vacuum environment

Abstract

The utility model provides a miniature lifting platform suitable for a high and low temperature vacuum environment, which comprises a driving assembly, the top of the driving assembly is provided with a shell, the middle part of the shell is provided with a through open hole, four corners of the shell are provided with first guide holes, the open hole and the first guide holes are internally provided with a lifting assembly in a penetrating manner, and the lifting assembly is connected with the driving assembly. A top plate is installed at the top end of the lifting assembly, a servo motor drives a lifting lead screw to rotate, so that a first optical axis ascends and descends in an open hole under the action of the lifting lead screw, and ascending and descending of the top plate can be adjusted in the mode; the lifting screw rod is made of stainless steel, and the base and the shell are both made of stainless steel, so that the lifting platform is not affected by the environment when used in the high-low temperature vacuum environment, and the operation precision of the lifting platform when used in the high-low temperature vacuum environment is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of lifting platform technology, specifically relating to a miniature lifting platform suitable for high and low temperature vacuum environments. Background Technology

[0002] A lifting platform is a device capable of vertical lifting. Traditional lifting platforms, such as hydraulic lifting platforms, motor-driven winch lifting platforms, or motor-driven lead screw lifting platforms, have different structures and are applied in different scenarios. High and low temperature environments and vacuum environments have a strong impact on mechanical industrial control. Traditional lifting platforms cannot operate effectively in extremely high, low, and vacuum environments. Some test scenarios require testing under extreme conditions. When traditional lifting platforms operate in vacuum and high and low temperature environments, the motion accuracy is affected by the environment and does not meet the test requirements. Therefore, we propose a lifting platform that can be used in high and low temperature vacuum environments. Utility Model Content

[0003] The purpose of this invention is to provide a miniature lifting platform suitable for high and low temperature vacuum environments, aiming to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a miniature lifting platform suitable for high and low temperature vacuum environments, comprising a drive assembly, a housing mounted on the top of the drive assembly, a through opening in the middle of the housing, first guide holes at the four corners of the housing, a lifting assembly inserted into the opening and the first guide holes, a top plate mounted on the top of the lifting assembly, and the drive assembly connected to the lifting assembly;

[0005] The lifting assembly includes a first optical axis and four second optical axes. The first optical axis is inserted into the opening, and the second optical axes are inserted into the first guide hole. A through lifting groove is opened in the middle of the first optical axis. One end of the second optical axis is connected to the support rod. Both the first optical axis and the support rod are connected to the bottom end of the top plate. A lead screw nut is installed at the bottom end of the lifting groove.

[0006] The drive assembly includes a base connected to the housing. Each of the four corners of the top of the base has a second guide hole. The first and second guide holes are aligned and have the same size. The base has a mounting cavity containing a servo motor. A linear bearing is mounted at the top of the mounting cavity. The output shaft of the servo motor is connected to the linear bearing, which is connected to a lifting screw. The top of the base has a through hole through which the lifting screw extends and connects to a screw nut.

[0007] As a preferred technical solution of this utility model, the inner wall of the lifting groove is provided with a clearance groove, the side of the lead screw nut is provided with a key groove, a key block is installed in the key groove, the key block is slidably connected to the clearance groove, and two positioning screw holes are provided on the side of the first optical shaft, one of the positioning screw holes passes through the clearance groove, a positioning bolt is installed in the positioning screw hole, and the end of the positioning bolt abuts against the lead screw nut and fixes the lead screw nut at the opening of the lifting groove.

[0008] In a preferred embodiment of this invention, both the first optical axis and the support rod are connected to the top plate by bolts.

[0009] As a preferred technical solution of this utility model, mounting holes with through openings are provided on the top and bottom of both sides of the housing, and fiber optic sensors are installed on both sides of the outer wall of the housing at the mounting holes.

[0010] As a preferred technical solution of this utility model, the outer shell surface is provided with a through first connecting screw hole between two adjacent first guide holes, and the base surface is provided with a second connecting screw hole between two adjacent second guide holes. The base and the outer shell are fixed by connecting bolts that are internally threaded through the first connecting screw hole and the second connecting screw hole.

[0011] As a preferred technical solution of this utility model, the servo motor is a high and low temperature vacuum motor with an applicable temperature of -80℃ to +150℃. The first optical axis, the second optical axis and the linear bearing are all made of ceramic. The lifting screw is made of stainless steel. The base and the outer shell are both made of stainless steel. The fiber optic through-beam sensor is a high and low temperature vacuum fiber optic sensor with an applicable temperature of -80℃ to +150℃.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: A servo motor drives the lifting screw to rotate, and the screw nut is fixed in the lifting groove. Therefore, under the action of the lifting screw, the first optical axis rises and falls within the opening, thereby adjusting the lifting of the top plate. Since the servo motor is a high-low temperature vacuum motor, the first optical axis, the second optical axis, and the linear bearing are all made of ceramic, the lifting screw is made of stainless steel, and the base and outer shell are also made of stainless steel. Therefore, the lifting platform is not affected by the environment when used in high-low temperature vacuum environments, effectively improving the operating accuracy of the lifting platform in such environments. Furthermore, the fiber optic photoelectric sensor can limit the lifting height of the top plate, thereby controlling the start and stop of the servo motor and preventing excessive operation of the servo motor that could cause the lifting screw to disengage from the screw nut. The fiber optic photoelectric sensor is a high-low temperature vacuum fiber optic sensor, ensuring that its normal operation is not affected by high-low temperature vacuum environments. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the drive component in this utility model;

[0017] Figure 4 This is a schematic diagram of the outer shell structure in this utility model;

[0018] Figure 5 This is a schematic diagram of the lifting component in this utility model;

[0019] Figure 6 This is a schematic diagram of part of the internal structure of this utility model.

[0020] In the diagram: 1. Drive assembly; 101. Base; 102. Second guide hole; 103. Servo motor; 104. Linear bearing; 105. Lifting screw; 2. Housing; 3. Opening; 4. First guide hole; 5. Lifting assembly; 501. First optical axis; 502. Second optical axis; 503. Lifting groove; 504. Support rod; 505. Screw nut; 506. Clearance groove; 507. Key groove; 508. Positioning screw hole; 6. Top plate; 7. Mounting hole; 8. Fiber optic through-beam sensor; 9. First connecting screw hole; 10. Second connecting screw hole; 11. Connecting bolt. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-6 The present invention provides the following technical solution: a miniature lifting platform suitable for high and low temperature vacuum environments, including a drive assembly 1, a housing 2 installed on the top of the drive assembly 1, a through opening 3 in the middle of the housing 2, and first guide holes 4 at the four corners of the housing 2. A lifting assembly 5 is installed through the opening 3 and the first guide holes 4. A top plate 6 is installed on the top of the lifting assembly 5. The drive assembly 1 is connected to the lifting assembly 5.

[0023] In this embodiment, the lifting assembly 5 includes a first optical axis 501 and four second optical axes 502. The first optical axis 501 is inserted into the opening 3, and the second optical axes 502 are inserted into the first guide holes 4. A through lifting groove 503 is formed in the middle of the first optical axis 501. One end of the second optical axis 502 is connected to the support rod 504. Both the first optical axis 501 and the support rod 504 are connected to the bottom end of the top plate 6. A lead screw nut 505 is installed at the bottom end of the lifting groove 503. The drive assembly 1 includes a base 101 connected to the outer casing 2. The base 101 has a second guide hole 102 at each of the four corners of its top end. The first guide hole 4 and the second guide hole 102 are aligned with each other and have the same size. The base 101 has an installation cavity and a servo motor 103 is installed in the installation cavity. A linear bearing 104 is installed at the top of the installation cavity. The output shaft of the servo motor 103 is connected to the linear bearing 104. The linear bearing 104 is connected to the lifting screw 105. The top end of the base 101 has a through hole. The lifting screw 105 passes through the through hole and extends into the opening 3 and is connected to the screw nut 505.

[0024] Specifically, the lifting screw 105 is driven to rotate by the servo motor 103. Under the action of the lifting screw 105 and the screw nut 505, the first optical axis 501 and the second optical axis 502 are raised and lowered in the opening 3 and the first guide hole 4 and the second guide hole 102 respectively, thereby adjusting the lifting height of the top plate 6.

[0025] In this embodiment, the first optical axis 501 and the support rod 504 are both connected to the top plate 6 by bolts. The inner wall of the lifting groove 503 is provided with a relief groove 506. The side of the lead screw nut 505 is provided with a key groove 507. A key block is installed in the key groove 507. The key block is slidably connected to the relief groove 506. Two positioning screw holes 508 are provided on the side of the first optical axis 501. One of the positioning screw holes 508 passes through the relief groove 506. A positioning bolt is installed in the positioning screw hole 508. The end of the positioning bolt abuts against the lead screw nut 505 and fixes the lead screw nut 505 at the opening of the lifting groove 503.

[0026] Specifically, since the first optical axis 501 and the support rod 504 are both connected to the top plate 6 by bolts, and the first optical axis 501 has a through lifting groove 503 in the middle, after removing the top plate 6, the key block on the side of the lead screw nut 505 is aligned with the clearance groove 506, thus facilitating the disassembly and assembly of the lead screw nut 505. When the lead screw nut 505 slides from the top of the first optical axis 501 to the bottom groove, it is threadedly connected to the positioning screw hole 508 by the positioning bolt and abuts against the key block and the lead screw nut 505, thus fixing the position of the lead screw nut 505. The above method facilitates the disassembly and maintenance of the lead screw nut 505.

[0027] In this embodiment, mounting holes 7 with through openings 3 are provided on the top and bottom of both sides of the outer casing 2, and fiber optic sensors 8 are installed on both sides of the outer wall of the outer casing 2 at the mounting holes 7.

[0028] Specifically, the lifting height of the first optical axis 501 can be limited by the fiber optic through-beam sensors 8 set at the top and bottom. Since the mounting hole 7 passes through the opening 3, when all the fiber optic through-beam sensors 8 fail to detect the first optical axis 501, it means that the first optical axis 501 has been raised to the highest position. At this time, the external controller controls the servo motor 103 to stop, thereby preventing the lifting screw 105 from disengaging from the screw nut 505. When all the fiber optic through-beam sensors 8 detect the first optical axis 501, it means that the first optical axis 501 has been lowered to the lowest position. At this time, the external controller controls the servo motor 103 to stop. The above method facilitates the limitation of the lifting height of the lifting platform.

[0029] In this embodiment, a through first connecting screw hole 9 is provided on the surface of the outer shell 2 between two adjacent first guide holes 4, and a second connecting screw hole 10 is provided on the surface of the base 101 between two adjacent second guide holes 102. The base 101 and the outer shell 2 are fixed by connecting bolts 11 connected by the internal threads of the first connecting screw hole 9 and the second connecting screw hole 10.

[0030] Specifically, the base 101 and the outer shell 2 are easily fixed by the connecting bolt 11 engaging with the first connecting screw hole 9 and the second connecting screw hole 10.

[0031] In this embodiment, the servo motor 103 is a high and low temperature vacuum motor, the first optical axis 501, the second optical axis 502 and the linear bearing 104 are all made of ceramic, the lifting screw 105 is made of stainless steel, the base 101 and the outer shell 2 are both made of stainless steel, and the fiber optic through-beam sensor 8 is a high and low temperature vacuum fiber optic sensor.

[0032] Specifically, this method enables the lifting platform to adapt to high and low temperature vacuum environments, effectively improving the operating accuracy of the lifting platform when used in such environments.

[0033] Working principle: The servo motor 103 drives the lifting screw 105 to rotate, and the screw nut 505 is fixed in the lifting groove 503. Therefore, under the action of the lifting screw 105, the first optical axis 501 moves up and down in the opening 3, thereby adjusting the lifting of the top plate 6. Since the servo motor 103 is a high and low temperature vacuum motor, the first optical axis 501, the second optical axis 502 and the linear bearing 104 are all made of ceramic, the lifting screw 105 is made of stainless steel, and the base 101 and the outer shell 2 are also made of stainless steel, the lifting platform is not affected by the environment when used in high and low temperature vacuum environments, thus effectively improving the operating accuracy of the lifting platform when used in high and low temperature vacuum environments. The fiber optic photoelectric sensor 8 can limit the lifting height of the top plate 6, thereby controlling the opening and closing of the servo motor 103 and preventing the servo motor 103 from running excessively and causing the lifting screw 105 to disengage from the screw nut 505. The fiber optic photoelectric sensor 8 is a high and low temperature vacuum fiber optic sensor, so the operation of the fiber optic photoelectric sensor 8 is not affected by the high and low temperature vacuum environment.

[0034] 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 miniature lifting platform suitable for high and low temperature vacuum environments, comprising a drive assembly (1), characterized in that: The top of the drive assembly (1) is fitted with a housing (2), and a through opening (3) is provided in the middle of the housing (2). A first guide hole (4) is provided at each of the four corners of the housing (2). A lifting assembly (5) is installed in the opening (3) and the first guide hole (4). A top plate (6) is installed at the top of the lifting assembly (5). The drive assembly (1) is connected to the lifting assembly (5). The lifting assembly (5) includes a first optical axis (501) and four second optical axes (502). The first optical axis (501) is inserted into the opening (3), and the second optical axes (502) are inserted into the first guide hole (4). A through lifting groove (503) is provided in the middle of the first optical axis (501). One end of the second optical axis (502) is connected to the support rod (504). The first optical axis (501) and the support rod (504) are both connected to the bottom end of the top plate (6). A screw nut (505) is installed at the bottom end of the lifting groove (503). The drive assembly (1) includes a base (101) connected to the housing (2). The base (101) has four second guide holes (102) at its top four corners. The first guide hole (4) and the second guide hole (102) are aligned and have the same size. The base (101) has a mounting cavity, and a servo motor (103) is installed inside the mounting cavity. A linear bearing (104) is installed at the top of the mounting cavity. The output shaft of the servo motor (103) is connected to the linear bearing (104). The linear bearing (104) is connected to the lifting screw (105). The top of the base (101) has a through hole. The lifting screw (105) extends through the through hole into the opening (3) and is connected to the screw nut (505). The servo motor (103) is a high and low temperature vacuum motor. The first optical axis (501), the second optical axis (502) and the linear bearing (104) are all made of ceramic. The lifting screw (105) is made of stainless steel. The base (101) and the outer shell (2) are both made of stainless steel.

2. The miniature lifting platform suitable for high and low temperature vacuum environments according to claim 1, characterized in that: The inner wall of the lifting groove (503) is provided with a relief groove (506), and the side of the lead screw nut (505) is provided with a key groove (507). A key block is installed in the key groove (507), and the key block is slidably connected to the relief groove (506). The side of the first optical axis (501) is provided with two positioning screw holes (508), one of which passes through the relief groove (506). A positioning bolt is installed in the positioning screw hole (508), and the end of the positioning bolt abuts against the lead screw nut (505) and fixes the lead screw nut (505) at the opening of the lifting groove (503).

3. A miniature lifting platform suitable for high and low temperature vacuum environments according to claim 1, characterized in that: The first optical axis (501) and the support rod (504) are both connected to the top plate (6) by bolts.

4. A miniature lifting platform suitable for high and low temperature vacuum environments according to claim 1, characterized in that: The top and bottom of both sides of the outer casing (2) are provided with through holes (3) and mounting holes (7). Fiber optic sensors (8) are installed on both sides of the outer wall of the outer casing (2) at the mounting holes (7).

5. A miniature lifting platform suitable for high and low temperature vacuum environments according to claim 1, characterized in that: The outer shell (2) has a through first connecting screw hole (9) between two adjacent first guide holes (4) on its surface, and the base (101) has a second connecting screw hole (10) between two adjacent second guide holes (102) on its surface. The base (101) and the outer shell (2) are fixed by connecting bolts (11) that are threaded through the first connecting screw hole (9) and the second connecting screw hole (10).

6. A miniature lifting platform suitable for high and low temperature vacuum environments according to claim 4, characterized in that: The fiber optic through-beam sensor (8) is a high and low temperature vacuum fiber optic sensor.

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