Leveling actuator

Abstract

The utility model discloses a leveling actuator, including a leveling actuator, including motor, speed reducer, sleeve, lead screw, silk mother, stand, at least one's guide screw, gear set, first deep groove ball bearing, second deep groove ball bearing, thrust ball bearing, pressure sensor, rotating support stand, pressure sensor is installed to the lower extreme of leveling actuator, has eliminated the influence of the inevitable microdeformation of pressure sensor load action to transmission shaft system, makes leveling accuracy improve, also has improved the maintainability of leveling actuator, the setting of spring cable has improved the cable working life problem under the long -term reciprocating motion condition of leveling actuator, in addition selects the spring cable of good electromagnetic shielding performance, improved the stability and anti -interference ability of in -place signal transmission, the axial positioning gap of relaxation bearing, removes the influence to pressure sensor reading accuracy from structure, uses thrust ball bearing, avoids radial positioning to the interference of pressure sensor deformation.

Description

Technical Field

[0001] This utility model relates to the field of actuator technology, and in particular to a leveling actuator. Background Technology

[0002] Currently, many countries abroad require electromechanical automatic leveling actuators, with Germany, Japan, and the United States being among the leading manufacturers. Since the 1960s and 70s, with the widespread application of sensors, electromechanical leveling technology has matured and has been applied to missile launchers, radar vehicles, and many other machines.

[0003] The 14th Research Institute of China Electronics Technology Group Corporation and the East China Electronic Engineering Research Institute have both taken the lead in developing electric automatic leveling actuators, but the actuators only perform leveling actions and do not have load feedback functions.

[0004] The main domestic manufacturers of leveling actuators are Beijing Feihu Electromechanical and Hebi Huawei Automotive Technology Research Institute. Their products are mainly used in the civilian market. However, the leveling actuators from these two companies have the technical problem of low leveling accuracy.

[0005] Therefore, it is necessary to develop a leveling actuator to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to design a leveling actuator to solve the above-mentioned problems.

[0007] This utility model achieves the above objectives through the following technical solutions:

[0008] A leveling actuator, comprising:

[0009] Electric motor;

[0010] Speed ​​reducer; the output end of the motor is connected to the input end of the speed reducer;

[0011] Sleeve; both the motor and the reducer are mounted on the outer wall of the sleeve;

[0012] Lead screw;

[0013] Threaded nut; threaded engagement between the threaded nut and the lead screw;

[0014] Post; nut connects to the upper end of the post; the upper part of the post is placed inside the sleeve;

[0015] At least one guide screw; at least one guide groove is vertically provided on the side wall of the column, the guide screw is installed on the sleeve and inserted into the guide groove, and the guide screw and the guide groove are guided and engaged.

[0016] Gear set; The gear set is mounted on the first end of the lead screw, and the gear set is in transmission engagement with the output end of the reducer;

[0017] First deep groove ball bearing;

[0018] Second deep groove ball bearing;

[0019] Thrust ball bearing; the outer ring of the first deep groove ball bearing, the outer ring of the second deep groove ball bearing, and the seat ring of the thrust ball bearing are all installed in the sleeve, and the inner ring of the first deep groove ball bearing, the inner ring of the second deep groove ball bearing, and the shaft ring of the thrust ball bearing are all installed on the lead screw. The second deep groove ball bearing, the gear set, the first deep groove ball bearing, and the thrust ball bearing are arranged in sequence from top to bottom.

[0020] Pressure sensor; the lower end of the column is connected to the first end of the pressure sensor;

[0021] Rotating support; the second end of the pressure sensor is connected to the rotating end of the rotating support.

[0022] Specifically, the leveling actuator also includes a retraction-to-position switch and an extension-to-position switch. The quick-acting structure of the retraction-to-position switch and the quick-acting structure of the extension-to-position switch are both installed on the lower side wall of the sleeve. The push-actuator of the retraction-to-position switch is installed on the lower side wall of the column, and the push-actuator of the extension-to-position switch is installed on the upper side wall of the column.

[0023] Preferably, there are two guide screws and two corresponding guide grooves. The two guide grooves are respectively installed on the first side wall and the second side wall of the column. The first side wall and the second side wall of the column are two side walls that are arranged opposite to each other.

[0024] Specifically, the actuator for the retraction switch is mounted on the third side wall of the column, and the actuator for the extension switch is mounted on the fourth side wall of the column. The third and fourth side walls of the column are two opposite side walls, and the horizontal line connecting the third and fourth side walls is perpendicular to the first and second side walls.

[0025] Furthermore, the leveling actuator also includes a spring cable, with the first end of the spring cable fixed to the lower side wall of the column and the second end of the spring cable fixed to the lower side wall of the sleeve. The second end of the spring cable is connected to a pressure sensor, and the first end of the spring cable is connected to a processor.

[0026] Specifically, the rotating support includes a connecting column, a pressure plate, and a support leg. The center of the support leg is provided with a first inner spherical structure, the center of the pressure plate is provided with a second inner spherical structure, the side wall of the connecting column is formed as an outer spherical structure, the lower part of the connecting column is installed in the first inner spherical structure of the support leg, the pressure plate is installed on the support leg and limits the axial movement of the connecting column, the outer spherical structure of the connecting column is spherically rotated with the first inner spherical structure and the second inner spherical structure respectively, and the second end of the pressure sensor is connected to the upper end of the connecting column.

[0027] Specifically, the rotating support also includes at least one limiting member. The lower end of the pressure plate is provided with at least one upper limit groove, and the upper end of the support leg is provided with at least one lower limit groove. The lower end of the limiting member is installed in the lower limit groove, and the upper end of the limiting member is installed in the upper limit groove.

[0028] Furthermore, the leveling actuator also includes a key, through which the gear set is mounted on the lead screw.

[0029] The beneficial effects of this utility model are as follows:

[0030] The pressure sensor is installed at the lower end of the leveling actuator, which eliminates the influence of the unavoidable slight deformation of the transmission shaft system under the load of the pressure sensor, thereby improving the leveling accuracy and the maintainability of the leveling actuator.

[0031] The use of spring cables improves the cable lifespan of the leveling actuator under long-term reciprocating motion. In addition, the selection of spring cables with good electromagnetic shielding performance enhances the stability and anti-interference capability of the positioning signal transmission.

[0032] By widening the axial positioning clearance of the bearing, the impact on the reading accuracy of the pressure sensor is eliminated structurally.

[0033] Thrust ball bearings are used to avoid interference from radial positioning on the deformation of the pressure sensor.

[0034] The design of the structure has little impact on the actuator modes. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of this application (partial cross-section);

[0036] Figure 2 for Figure 1 Schematic diagram of the AA section;

[0037] Figure 3 for Figure 1 An enlarged view of the upper part;

[0038] Figure 4 for Figure 1 Enlarged diagram of the lower part;

[0039] Figure 5 This is a schematic diagram of the installation structure of the spring cable in this application.

[0040] Legend: 1. Motor, 2. Reducer, 3. Gear set, 4. Key, 5. Lead screw, 6. Nut, 7. Column, 8. Sleeve, 9. Guide screw, 10. Retraction switch, 11. Extension switch, 12. First deep groove ball bearing, 13. Second deep groove ball bearing, 14. Thrust ball bearing, 15. Pressure sensor, 16. Spring cable, 17. Connecting column, 18. Pressure plate, 19. Limiting component, 20. Support leg. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0048] like Figure 1-4 As shown, a leveling actuator includes:

[0049] Motor 1; Motor 1 is installed vertically upside down;

[0050] Reducer 2; the output end of motor 1 is connected to the input end of reducer 2;

[0051] Sleeve 8; Motor 1 and reducer 2 are both mounted on the outer wall of sleeve 8;

[0052] Lead screw 5; lead screw 5 vertical installation;

[0053] Thread nut 6; Thread nut 6 is threadedly engaged with lead screw 5;

[0054] Column 7; nut 6 is connected to the upper end of column 7; the upper part of column 7 is placed inside sleeve 8;

[0055] Two guide screws 9; two guide grooves are vertically provided on the side wall of the column 7, the guide screws 9 are installed on the sleeve 8 and inserted into the guide grooves, and the guide screws 9 are guided and engaged with the guide grooves.

[0056] Gear set 3; Gear set 3 is mounted on the first end of lead screw 5, and gear set 3 is in transmission engagement with the output end of reducer 2;

[0057] First deep groove ball bearing 12;

[0058] Second deep groove ball bearing 13;

[0059] The thrust ball bearing 14; the outer ring of the first deep groove ball bearing 12, the outer ring of the second deep groove ball bearing 13, and the seat ring of the thrust ball bearing 14 are all installed in the sleeve 8. The inner ring of the first deep groove ball bearing 12, the inner ring of the second deep groove ball bearing 13, and the shaft ring of the thrust ball bearing 14 are all installed on the lead screw 5. The second deep groove ball bearing 13, the gear set 3, the first deep groove ball bearing 12, and the thrust ball bearing 14 are arranged sequentially from top to bottom.

[0060] Pressure sensor 15; the lower end of column 7 is connected to the first end of pressure sensor 15;

[0061] Rotating support; the second end of the pressure sensor 15 is connected to the rotating end of the rotating support.

[0062] The rigidity and stability of the motion axis of the leveling actuator are jointly constrained by the first deep groove ball bearing 12, the second deep groove ball bearing 13, and the thrust ball bearing 14.

[0063] Sufficient clearance is ensured between the column 7 and the connecting column 17 to eliminate the influence of dimensional deformation of the pressure sensor 15 under load.

[0064] In some embodiments, the leveling actuator can also be extended / retracted via a manual crank handle, specifically by additionally providing a manual power input interface on the reducer 2.

[0065] like Figure 5 As shown, the leveling actuator also includes a retraction-to-position switch 10 and an extension-to-position switch 11. The quick-acting mechanisms of both the retraction-to-position switch 10 and the extension-to-position switch 11 are mounted on the lower side wall of the sleeve 8. The push-actuator of the retraction-to-position switch 10 is mounted on the lower side wall of the column 7, and the push-actuator of the extension-to-position switch 11 is mounted on the upper side wall of the column 7. The purpose of the retraction-to-position switch 10 and the extension-to-position switch 11 is to limit the length range of the leveling actuator, preventing damage or accidents caused by exceeding its working range.

[0066] like Figure 1 and 2 As shown in Figure 4, two guide grooves are respectively installed on the first side wall and the second side wall of the column 7. The first side wall and the second side wall of the column 7 are two side walls arranged opposite to each other.

[0067] like Figure 5 As shown, the push actuator of the retractable position switch 10 is installed on the third side wall of the column 7, and the push actuator of the extended position switch 11 is installed on the fourth side wall of the column 7. The third and fourth side walls of the column 7 are two side walls arranged opposite to each other, and the horizontal line connecting the third and fourth side walls is perpendicular to the horizontal line connecting the first and second side walls.

[0068] like Figure 5 As shown, the leveling actuator also includes a spring cable 16. The first end of the spring cable 16 is fixed to the lower side wall of the column 7, and the second end of the spring cable 16 is fixed to the lower side wall of the sleeve 8. The second end of the spring cable 16 is connected to the pressure sensor 15, and the first end of the spring cable 16 is connected to the processor.

[0069] like Figure 1 and 4As shown, the rotating support includes a connecting column 17, a pressure plate 18, and a support leg 20. The support leg 20 has a first inner spherical structure at its center, and the pressure plate 18 has a second inner spherical structure at its center. The sidewall of the connecting column 17 is formed as an outer spherical structure. The lower part of the connecting column 17 is installed within the first inner spherical structure of the support leg 20. The pressure plate 18 is installed on the support leg 20 and limits the axial movement of the connecting column 17. The outer spherical structure of the connecting column 17 rotatably engages with both the first and second inner spherical structures. The second end of the pressure sensor 15 is connected to the upper end of the connecting column 17. The spherical rotatable engagement of the connecting column 17 with the pressure plate 18 and the support leg 20 allows for adjustment of the connecting column 17's installation posture, achieving support in various postures.

[0070] like Figure 1 and 4 As shown, the rotating support also includes two limiting members 19. The lower end of the pressure plate 18 is provided with two upper limit grooves, and the upper end of the support leg 20 is provided with two lower limit grooves. The lower end of the limiting member 19 is installed in the lower limit groove, and the upper end of the limiting member 19 is installed in the upper limit groove. The limiting members 19 can limit the horizontal displacement of the support leg 20.

[0071] like Figure 1 and 3 As shown, the leveling actuator also includes a key 4, and the gear set 3 is mounted on the lead screw 5 via the key 4.

[0072] like Figure 3 As shown, the top of the sleeve 8 is provided with a cover, the outer ring of the second deep groove ball bearing 13 is installed in the mounting hole reserved on the cover, and the gear set 3 is installed in the cavity of the cover.

[0073] like Figure 4 As shown, the column 7 is formed into a circular column structure, and a support plate is installed at the bottom of the column 7. The bottom of the support plate is connected to the first end of the pressure sensor 15.

[0074] In operation, the bottom of the support leg 20 and the top of the sleeve 8 serve as the support end and the actuating end, respectively, connecting to relevant equipment. The angle between the connecting column 17 and the pressure plate 18 and the limiting member 19 is adjusted by rotating the connecting column 17. Then, the motor 1 operates, and its power output, after passing through the reducer 2, acts on the gear set 3. The gear set 3 drives the lead screw 5 to rotate. Because the lead screw 5 is threaded with the nut 6, and the circumferential rotation of the column 7 is restricted, the nut 6 drives the column 7 to move linearly up and down to adjust the length of the leveling actuator. The function of measuring the load-bearing capacity of the leveling actuator is directly accomplished by the pressure sensor 15. The pressure sensor 15 is installed between the force-bearing surfaces of the column 7 and the connecting column 17, and can accurately measure the load on the actuator along the axis of the lead screw 5.

[0075] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A leveling actuator, characterized in that, include: Electric motor; Speed ​​reducer; the output end of the motor is connected to the input end of the speed reducer; Sleeve; both the motor and the reducer are mounted on the outer wall of the sleeve; Lead screw; Threaded nut; threaded engagement between the threaded nut and the lead screw; Post; nut connects to the upper end of the post; the upper part of the post is placed inside the sleeve; At least one guide screw; at least one guide groove is vertically provided on the side wall of the column, the guide screw is installed on the sleeve and inserted into the guide groove, and the guide screw and the guide groove are guided and engaged. Gear set; The gear set is mounted on the first end of the lead screw, and the gear set is in transmission engagement with the output end of the reducer; First deep groove ball bearing; Second deep groove ball bearing; Thrust ball bearing; the outer ring of the first deep groove ball bearing, the outer ring of the second deep groove ball bearing, and the seat ring of the thrust ball bearing are all installed in the sleeve, and the inner ring of the first deep groove ball bearing, the inner ring of the second deep groove ball bearing, and the shaft ring of the thrust ball bearing are all installed on the lead screw. The second deep groove ball bearing, the gear set, the first deep groove ball bearing, and the thrust ball bearing are arranged in sequence from top to bottom. Pressure sensor; the lower end of the column is connected to the first end of the pressure sensor; Rotating support; the second end of the pressure sensor is connected to the rotating end of the rotating support.

2. The leveling actuator according to claim 1, characterized in that, The leveling actuator also includes a retraction-to-position switch and an extension-to-position switch. The quick-acting structure of the retraction-to-position switch and the quick-acting structure of the extension-to-position switch are both installed on the lower side wall of the sleeve. The push-actuator of the retraction-to-position switch is installed on the lower side wall of the column, and the push-actuator of the extension-to-position switch is installed on the upper side wall of the column.

3. A leveling actuator according to claim 2, characterized in that, There are two guide screws and two corresponding guide grooves. The two guide grooves are respectively installed on the first side wall and the second side wall of the column. The first side wall and the second side wall of the column are two side walls that are set opposite to each other.

4. A leveling actuator according to claim 3, characterized in that, The retraction switch's actuator is installed on the third side wall of the column, and the extension switch's actuator is installed on the fourth side wall of the column. The third and fourth side walls of the column are two side walls that are set opposite to each other. The horizontal line connecting the third and fourth side walls is perpendicular to the horizontal line connecting the first and second side walls.

5. A leveling actuator according to claim 1, characterized in that, The leveling actuator also includes a spring cable. The first end of the spring cable is fixed to the lower side wall of the column, and the second end of the spring cable is fixed to the lower side wall of the sleeve. The second end of the spring cable is connected to a pressure sensor, and the first end of the spring cable is connected to a processor.

6. A leveling actuator according to claim 1, characterized in that, The rotating support includes a connecting column, a pressure plate, and a support foot. The center of the support foot is provided with a first inner spherical structure, and the center of the pressure plate is provided with a second inner spherical structure. The side wall of the connecting column is formed as an outer spherical structure. The lower part of the connecting column is installed in the first inner spherical structure of the support foot. The pressure plate is installed on the support foot and limits the axial movement of the connecting column. The outer spherical structure of the connecting column is spherically rotated with the first inner spherical structure and the second inner spherical structure, respectively. The second end of the pressure sensor is connected to the upper end of the connecting column.

7. A leveling actuator according to claim 6, characterized in that, The rotating support also includes at least one limiting member. The lower end of the pressure plate is provided with at least one upper limit groove, and the upper end of the support leg is provided with at least one lower limit groove. The lower end of the limiting member is installed in the lower limit groove, and the upper end of the limiting member is installed in the upper limit groove.

8. A leveling actuator according to claim 6, characterized in that, The leveling actuator also includes a key, and the gear set is mounted on the lead screw via the key.

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