High-efficiency self-locking lead screw lifting mechanism

Abstract

The utility model discloses a high-efficiency self-locking type lead screw lifting mechanism which comprises a sliding base and further comprises a self-locking driving integrated assembly, the self-locking driving integrated assembly comprises a rod piece, an outer frame is installed on the outer side of the rod piece in a sleeved mode, a guide pipe is installed on the side, aligned with the axis of the rod piece, of the interior of the outer frame in a butt joint mode, and supports are arranged on the two sides of the outer frame. A hydraulic cylinder is arranged in the middle of the support, a friction rod is arranged at the output end of the hydraulic cylinder, and the friction rod is arranged in the guide pipe in a sliding mode. The lead screw base assembly is mainly used for limiting the position of a lead screw transmission part, namely a lead screw, meanwhile, butt joint installation of the self-locking device is facilitated, and a reference is provided for installation of the self-locking device. And a self-locking driving integrated assembly is arranged. A core component, namely a self-locking structure, is mounted between a transmission structure and a lead screw seat, a rod piece is arranged at the end of a lead screw in a lengthened mode, and friction blocking or releasing of the rod piece is achieved in the mode that a friction rod is controlled by a hydraulic cylinder to extrude or break away from the rod piece.

Description

Technical Field

[0001] This utility model relates to the field of lead screw transmission technology, and in particular to a high-efficiency self-locking lead screw lifting mechanism. Background Technology

[0002] A lead screw is a rod-shaped component with a special helical groove that converts rotary motion into linear motion, or vice versa. It features high precision, high strength, and durability, and is widely used in various mechanical equipment such as CNC machine tools, automated equipment, precision instruments, elevators, shearing machines, and injection molding machines, playing crucial roles in transmission, positioning, lifting, support, and sensing. There are many types of lead screws, including ordinary lead screws, precision lead screws, large lead screws, small lead screws, long lead screws, short lead screws, and unequal pitch lead screws, each with its unique advantages and applications. Furthermore, ball screws, as a type of lead screw, are characterized by high precision, high efficiency, high rigidity, and long service life, making them an important component in mechanical transmission.

[0003] Chinese invention patent application CN116618479B discloses a lead screw straightening device, which relates to the field of lead screw straightening technology. The device includes a testing platform and a lead screw body. The top of the testing platform has two movable slots, and the two movable slots are slidably connected to the same sliding frame. A side plate is fixedly connected to the top of the testing platform, and a hydraulic cylinder is fixedly connected to the side of the side plate facing the sliding frame. The output end of the hydraulic cylinder is fixedly connected to the outside of the sliding frame. This invention discloses a lead screw straightening device where both the straightening component and the testing component are located on the outside of the lead screw body. During the lead screw body straightening process, the testing component detects the outside of the lead screw body. If bending or kinking occurs, the straightening component, located on both sides of the testing component, straightens the detected bending points of the lead screw body through reciprocating movement, ensuring rapid straightening after detection, improving the accuracy of the straightening points, and thus improving the straightening effect of the lead screw body.

[0004] In the prior art, the lead screw device used for lead screw drive can only realize the reciprocating linear motion of the slide table on the surface of the lead screw. If the position needs to be locked when the slide table moves to a specific position, the lead screw drive assembly in the prior art cannot realize this function, so it needs to be improved. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-efficiency self-locking screw lifting mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-efficiency self-locking screw lifting mechanism includes a slide, and further includes:

[0008] The self-locking drive integrated component includes a rod, an outer frame is sleeved on the outside of the rod, a guide tube is installed inside the outer frame on the side aligned with the axis of the rod, supports are provided on both sides of the outer frame, a hydraulic cylinder is provided in the middle of the supports, a friction rod is provided at the output end of the hydraulic cylinder, and the friction rod is slidably arranged inside the guide tube.

[0009] A further technical solution involves an L-shaped support structure with bolts fixedly installed on both sides of the support.

[0010] A further technical solution involves mounting a motor on one side of the outer frame, with screws securing the motor to its perimeter.

[0011] Further technical solutions also include:

[0012] A lead screw seat assembly includes a lead screw that is mated and mounted on one side of a rod, a guide sleeve that is sleeved on one side of the lead screw, and a bearing sleeve that is mated and mounted on one side of the guide sleeve.

[0013] A further technical solution involves mounting a bearing inside the bearing sleeve.

[0014] A further technical solution involves providing threaded holes and positioning holes at the mating points of the guide sleeve and bearing sleeve, with positioning screws installed inside the positioning holes.

[0015] A further technical solution involves mounting the slide block drive on the surface of the lead screw, with a drive thread provided on the inner wall of the guide sleeve.

[0016] Compared with the prior art, this utility model provides a high-efficiency self-locking screw lifting mechanism, which has the following beneficial effects:

[0017] The lead screw seat assembly is designed to limit the position of the lead screw, the lead screw drive component, and facilitates the docking and installation of the self-locking device, providing a reference for the installation of the self-locking device.

[0018] The integrated self-locking drive assembly integrates the self-locking and drive components. Its core component—the self-locking structure—is installed between the transmission structure and the lead screw seat. By extending a rod at the end of the lead screw and controlling the friction rod to press or disengage from the rod via a hydraulic cylinder, frictional blocking or release of the rod is achieved, thus indirectly realizing the self-locking and rotation effects of the lead screw. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a high-efficiency self-locking screw lifting mechanism proposed in this utility model;

[0020] Figure 2This is a schematic diagram of the longitudinal section of a high-efficiency self-locking screw lifting mechanism proposed in this utility model;

[0021] Figure 3 This is a side view of a high-efficiency self-locking screw lifting mechanism proposed in this utility model.

[0022] Figure 4 This is a top view of the structure of a high-efficiency self-locking screw lifting mechanism proposed in this utility model.

[0023] In the diagram: 1. Slide; 2. Lead screw assembly; 3. Self-locking drive integrated assembly; 4. Lead screw; 5. Rod; 6. Guide sleeve; 7. Bearing sleeve; 8. Bearing; 9. Outer frame; 10. Bracket; 11. Bolt; 12. Hydraulic cylinder; 13. Friction rod; 14. Guide tube; 15. Motor; 16. Screw; 17. Threaded hole; 18. Positioning hole; 19. Positioning screw. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1: Refer to Figure 1 - Figure 4 A high-efficiency self-locking screw lifting mechanism includes a slide 1, which is a component that drives linear motion on the surface of the screw 4, and further includes:

[0026] The self-locking drive integrated assembly 3 includes a rod 5, which indirectly controls the rotation of the lead screw 4. An outer frame 9 is sleeved on the outer side of the rod 5. A guide tube 14 is installed inside the outer frame 9 on the side aligned with the axis of the rod 5. The guide tube 14 limits the movement of the friction rod 13. Supports 10 are provided on both sides of the outer frame 9. A hydraulic cylinder 12 supported in the middle of the support 10 controls the extension and retraction of the friction rod 13 inside the guide tube 14, pressing it against the surface of the rod 5 to achieve a stopping effect, thus realizing self-locking. A hydraulic cylinder 12 is located in the middle of the support 10, and the friction rod 13 is located at the output end of the hydraulic cylinder 12, slidingly disposed inside the guide tube 14.

[0027] The high-efficiency self-locking screw lifting mechanism has an L-shaped support 10, with bolts 11 fixedly installed on both sides of the support 10.

[0028] In the high-efficiency self-locking screw lifting mechanism, a motor 15 is mounted on one side of the outer frame 9, and the motor 15 directly drives the screw 4 to rotate via the rod 5. Screws 16 are fixedly installed around the periphery of the motor 15.

[0029] The high-efficiency self-locking screw lifting mechanism further includes:

[0030] A lead screw seat assembly 2 includes a lead screw 4 that is mated and installed on one side of a rod 5. A guide sleeve 6 is sleeved on one side of the lead screw 4 to guide the position of the lead screw 4, and a bearing sleeve 7 is used to ensure the rotation of the rod 5. A bearing sleeve 7 is mated and installed on one side of the guide sleeve 6.

[0031] In the high-efficiency self-locking screw lifting mechanism, the bearing sleeve 7 has a bearing 8 installed inside it.

[0032] The high-efficiency self-locking screw lifting mechanism has a threaded hole 17 and a positioning hole 18 at the joint of the guide sleeve 6 and the bearing sleeve 7. The positioning hole 18 is provided with a positioning screw 19. The threaded hole 17 is the joint of the guide sleeve 6 and the bearing sleeve 7, and the positioning hole 18 is the component for positioning the two.

[0033] The high-efficiency self-locking screw lifting mechanism has a slide block 1 that is driven and mounted on the surface of the screw 4, and the inner wall of the guide sleeve 6 is provided with a transmission thread.

[0034] Working principle:

[0035] In the actual design process of this utility model, to avoid the following defects existing in the prior art: "In the prior art, the screw device used for screw drive can only realize the reciprocating linear motion of the slide table on the surface of the screw. If the position needs to be locked when the slide table moves to a specific position, the screw drive assembly in the prior art cannot realize this function, so it needs to be improved." Therefore, the screw seat assembly 2 and the self-locking drive integrated assembly 3 are specifically proposed.

[0036] Screw seat assembly 2:

[0037] This component serves as the reference piece for the drive support and self-locking device of the lead screw 4. The drive of the lead screw 4 and the drive of the rod 5 are achieved through the interlocking guide sleeve 6 and bearing sleeve 7 (bearing 8), respectively. The back of the bearing sleeve can be used for docking and mounting the outer frame 9 structure.

[0038] Self-locking drive integrated component 3:

[0039] This component is mounted on one side of the bearing sleeve 7 via the outer frame 9, and its damping part is the rod 5 that connects with the lead screw 4. A hydraulic cylinder 12, located in the middle of the bracket 10 on one side of the outer frame 9, controls the friction rod 13 to move up and down inside the guide tube 14, rubbing against the rod 5 to prevent further rotation, thus stopping the lead screw 4 and achieving a self-locking effect. A motor 15 mounted on the back of the outer frame 9 directly drives the rod 5.

[0040] This invention integrates a self-locking drive assembly, which combines a self-locking component and a drive component. Its core component—the self-locking structure—is installed in the middle of the transmission structure and the lead screw seat. By extending a rod at the end of the lead screw and controlling the friction rod to press or disengage from the rod via a hydraulic cylinder, frictional blocking or release of the rod is achieved, thereby indirectly realizing the self-locking and rotational effects of the lead screw.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A high-efficiency self-locking screw lifting mechanism, comprising a slide (1), characterized in that, Also includes: The self-locking drive integrated assembly (3) includes a rod (5), an outer frame (9) is sleeved on the outside of the rod (5), a guide tube (14) is installed inside the outer frame (9) on the side aligned with the axis of the rod (5), a bracket (10) is provided on both sides of the outer frame (9), a hydraulic cylinder (12) is provided in the middle of the bracket (10), a friction rod (13) is provided at the output end of the hydraulic cylinder (12), and the friction rod (13) is slidably disposed inside the guide tube (14).

2. The high-efficiency self-locking screw lifting mechanism according to claim 1, characterized in that, The bracket (10) has an L-shaped structure, and bolts (11) are fixedly installed on both sides of the bracket (10).

3. The high-efficiency self-locking screw lifting mechanism according to claim 1, characterized in that, A motor (15) is mounted on one side of the outer frame (9), and screws (16) are fixedly mounted around the motor (15).

4. The high-efficiency self-locking screw lifting mechanism according to claim 1, characterized in that, Also includes: A lead screw seat assembly (2) includes a lead screw (4) which is mated and installed on one side of a rod (5). A guide sleeve (6) is sleeved on one side of the lead screw (4), and a bearing sleeve (7) is mated and installed on one side of the guide sleeve (6).

5. A high-efficiency self-locking screw lifting mechanism according to claim 4, characterized in that, The bearing sleeve (7) is internally fitted with a bearing (8).

6. A high-efficiency self-locking screw lifting mechanism according to claim 4, characterized in that, The guide sleeve (6) and the bearing sleeve (7) are provided with a threaded hole (17) and a positioning hole (18) at the joint. A positioning screw (19) is provided inside the positioning hole (18).

7. A high-efficiency self-locking screw lifting mechanism according to claim 4, characterized in that, The slide block (1) is driven and mounted on the surface of the lead screw (4), and the inner wall of the guide sleeve (6) is provided with a transmission thread.

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