An electric lifting cylinder with a high-precision repeat positioning function

Abstract

An electric lifting cylinder with a high-precision repeat positioning function, which is composed of a mounting base (1), a positioning seat (2), a drive assembly (3), a lead screw (4), a locking nut (5), an end cover (6), a compression ring (7), a nut (8), a ring spring (9), a pressure ring (10), a fixed support plate (11), a positioning pin (12), a square lifting column (13), a square column (14), an anti-friction anti-rotation block (15), an adjusting shim (16), an upper positioning block (17), a lower positioning block (18), and a lifting top plate (19); the present invention solves the problems of the traditional lifting system such as complex structure, poor shock resistance, and low repeat positioning accuracy, and has the advantages of simple structure, large load-bearing capacity, and high repeat positioning accuracy.

Description

Technical Field

[0001] The present invention relates to an electric lifting cylinder with a high-precision repeat positioning function, which is used to meet the application of various products in the fields of lifting and high-precision reliable repeat positioning. Background Art

[0002] With the rapid development of the world economy and technology, various new types of weapons emerge in an endless stream, and traditional terminal defense weapons can no longer meet the existing needs. In response to the current unmanned aerial vehicles with high flight speed and strong combat effectiveness, China is accelerating the development of combat equipment that can match them. To solve the problems of radar marching and combat state conversion in their equipment, a lifting system with high-precision reliable repeat positioning ability needs to be developed.

[0003] Most of the existing traditional radar lifting systems in China can only meet simple lifting actions and often cannot meet the requirements of high-precision reliable repeat positioning. Under the use conditions of high impact and large load, they are more likely to be damaged. Therefore, an electric lifting cylinder with a high-precision repeat positioning function emerges as the times require. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the above background art and provide an electric lifting cylinder with a high-precision repeat positioning function, which has a simple structure, high stiffness and high reliability.

[0005] The electric lifting cylinder with a high-precision repeat positioning function involved in the present invention is composed of a mounting base 1, a positioning seat 2, a driving assembly 3, a lead screw 4, a locking nut 5, an end cover 6, a pressing ring 7, a nut 8, a ring spring 9, a pressing ring 10, a fixed support plate 11, a positioning pin 12, a square lifting column 13, a square column 14, an anti-friction anti-rotation block 15, an adjusting gasket 16, an upper positioning block 17, a lower positioning block 18, and a lifting top plate 19.

[0006] The driving assembly 3 is fixed on the mounting base 1 together with the positioning seat 2. One end of the lead screw 4 is fixed on the positioning seat 2 through the locking nut 5 and the end cover 6 and is connected to the driving assembly 3 through the spline at its end. The pressing ring 7 is sleeved on the nut 8 through the ring spring 9 and the pressing ring 10 and is integrally fixed on the fixed support plate 11. The fixed support plate 11 is fixed on the square lifting column 13 through the positioning pin 12. The upper positioning block 17 is fixed on the square column 14 through the anti-friction anti-rotation block 15. The square column 14 is sleeved outside the square lifting column 13 through the adjusting gasket 16 and is fixed on the mounting base 1 through the lower positioning block 18. The lifting top plate 19 is fixed on the square lifting column 13.

[0007] The technical effect of the present invention compared with the prior art is:

[0008] 1) The design of the square column, square lifting column and anti-friction anti-rotation block ensures that the electric lifting cylinder has good torsional stiffness. According to the wear condition during use, by adjusting the use of shims, the working clearance between the anti-friction anti-rotation block and the square column can be adjusted, which can fundamentally extend the service life of the lifting cylinder by a large margin.

[0009] 2) The supporting design of the movable block type bottom positioning, movable block type top positioning and square lifting column ensures the reliable repeat positioning accuracy of the electric cylinder in both the ascending and descending states in the axial and circumferential directions. The square structure can also provide good torsional stiffness for the column.

[0010] 3) The lead screw nut is connected to the fixed support plate on the square lifting column through a spline. While preventing rotation, the nut has a certain axial movement ability. A set of annular spring components are designed respectively above and below the fixed support plate. After ascending and descending in place, the nut acts on the annular spring, and further through the annular spring, a pre-tightening force is provided to the spring seat and the fixed support plate connected thereto, ensuring the pre-tightening stiffness of the ascending and descending positioning.

[0011] 4) The fixed support plate is connected to the square lifting column through several prepared pins, which can effectively reduce the process difficulty of the square lifting column while ensuring the connection strength.

[0012] The present invention is an electric lifting cylinder with a high-precision repeat positioning function, which is an electric lifting cylinder with a simple structure, large stiffness and high reliability and has a high-precision repeat positioning function, providing effective support for the safe and reliable lifting and positioning of various products. Description of the Drawings

[0013] Figure 1 It is a partial connection diagram of the drive assembly

[0014] Figure 2 It is a partial connection diagram of the fixed support plate

[0015] Figure 3 It is an axonometric view when lifted in place

[0016] In the above figures:

[0017] 1. Installation base; 2. Positioning seat; 3. Drive assembly; 4. Lead screw; 5. Locking nut; 6. End cover; 7. Compression ring; 8. Nut; 9. Ring spring; 10. Pressure ring; 11. Fixed support plate; 12. Positioning pin; 13. Square lifting column; 14. Square column; 15. Anti-friction anti-rotation block; 16. Adjusting shim; 17. Upper positioning block; 18. Lower positioning block; 19. Lifting top plate. Detailed Embodiment

[0018] The following combines the drawings and embodiments to introduce in detail the structure and working principle of an electric lifting cylinder with a high-precision repeat positioning function of the present invention.

[0019] Embodiment

[0020] An electric lifting cylinder with a high-precision repeat positioning function involved in this embodiment is composed of a mounting base 1, a positioning seat 2, a drive assembly 3, a lead screw 4, a locking nut 5, an end cover 6, a compression ring 7, a nut 8, a ring spring 9, a pressure ring 10, a fixed support plate 11, a positioning pin 12, a square lifting column 13, a square column 14, an anti-friction anti-rotation block 15, an adjusting shim 16, an upper positioning block 17, a lower positioning block 18, and a lifting top plate 19.

[0021] Figure 1 As shown, the drive assembly 3 is fixed on the mounting base 1 together with the positioning seat 2. One end of the lead screw 4 is fixed on the positioning seat 2 through the locking nut 5 and the end cover 6, and is connected to the drive assembly 3 through the spline at its end. The nut 8 is sleeved on the lead screw 4. During operation, the drive assembly 3 drives the lead screw 4 to rotate, thereby driving the nut 8 to move up and down. The square column 14 is sleeved outside the square lifting column 13 through the anti-friction anti-rotation block 15 and the adjusting shim 16, and is fixed on the mounting base 1 through the lower positioning block 18. The lifting top plate 19 is fixed on the square lifting column 13. The design of the square column 14, the square lifting column 13, and the anti-friction anti-rotation block 15 ensures that the electric lifting cylinder has good torsional stiffness; and can adjust the gap between the anti-friction anti-rotation block 15 and the square column 14 through the adjusting shim 16 according to the wear condition during use, so as to substantially extend the service life of the lifting cylinder fundamentally. The cooperation between the conical surface at the bottom of the square lifting column 13 and the conical surface of the lower positioning block 17 ensures the reliable repeat positioning accuracy of the electric cylinder in the axial and circumferential directions after landing.

[0022] Figure 2 As shown, the compression ring 7 is sleeved on the nut 8 through the ring spring 9 and the pressure ring 10, and is integrally fixed on the fixed support plate 11. The fixed support plate 11 is fixed on the square lifting column 13 through the positioning pin 12. The fixed support plate 11 is connected to the square lifting column 13 through a plurality of positioning pins 12, which can effectively reduce the processing difficulty of the square lifting column 13 while ensuring the connection strength. The ring springs 9 designed on the upper and lower surfaces of the fixed support plate 11 respectively provide a pre-tightening force for the ring spring 9 and the fixed support plate 11 fixed on the square lifting column 13 by the nut 8 after rising and landing in place, so as to ensure the pre-tightening stiffness of rising and landing positioning.

[0023] During use, as shown in the figure, the driving component 3 drives the lead screw 4 to rotate, thereby driving the square lifting column 13 to move upward through the nut 8. After reaching the lifting position, the conical surface at the upper end of the square lifting column 13 abuts against the upper positioning block 17. Then, through the compression of the ring spring 9, a pre-tightening force is provided to the square lifting column 13, thereby ensuring the repeated positioning accuracy of the lifting. Similarly, the driving component 3 drives the lead screw 4 to rotate in the reverse direction, thereby driving the square lifting column 13 to move downward through the nut 8. After reaching the landing position, the conical surface at the lower end of the square lifting column 13 abuts against the lower positioning block 18. Then, through the compression of the ring spring 9, a pre-tightening force is provided to the square lifting column 13, thereby ensuring the repeated positioning accuracy of the landing.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An electric lifting cylinder with a high-precision repeat positioning function, which is composed of a mounting base (1), a positioning seat (2), a driving component (3), a lead screw (4), a locking nut (5), an end cover (6), a compression ring (7), a nut (8), a ring spring (9), a pressure ring (10), a fixed support plate (11), a positioning pin (12), a square lifting column (13), a square column (14), an anti-friction and anti-rotation block (15), an adjusting gasket (16), an upper positioning block (17), a lower positioning block (18), and a lifting top plate (19). Its characteristics are as follows: The driving component (3) is fixed on the mounting base (1) together with the positioning seat (2). One end of the lead screw (4) is fixed on the positioning seat (2) through the locking nut (5) and the end cover (6), and is connected to the driving component (3) through the spline at its end. The compression ring (7) is sleeved on the nut (8) through the ring spring (9) and the pressure ring (10), and is integrally fixed on the fixed support plate (11). The fixed support plate (11) is fixed on the square lifting column (13) through the positioning pin (12). The upper positioning block (17) is fixed on the square column (14) through the anti-friction and anti-rotation block (15). The square column (14) is sleeved outside the square lifting column (13) through the adjusting gasket (16), and is fixed on the mounting base (1) through the lower positioning block (18). The lifting top plate (19) is fixed on the square lifting column (13).

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