A helical type stepless rotation locking mechanism

Abstract

The present application relates to a kind of helical stepless rotary locking mechanism, including screw nut, screw rod assembly and lock, screw nut can rotate around its axis;Screw rod assembly is installed at one end of screw nut, it is coaxial with screw nut distribution, and its one end is threadedly connected with screw nut;Lock is installed at the other end of screw rod assembly, for locking or loosening screw rod assembly.The beneficial effects of the present application are to provide a kind of simple structure, reliable, small locking force stepless rotary locking mechanism, for stepless locking to rotating component, locking driving force is small, can realize stepless locking to rotating piece.

Description

Technical Field

[0001] This invention relates to the field of locking equipment technology for intelligent manipulators in oil drilling, specifically to a spiral-type stepless rotary locking mechanism. Background Technology

[0002] Intelligent transport robots involve locking their gripping and clamping functions in any working state during operation. Locking the rotating parts in their transmission chain is an effective way to lock the robot.

[0003] Current methods for locking rotating parts typically employ ratchet mechanisms, band brakes, disc brakes, and friction clutches. However, ratchet mechanisms offer stepped locking, which is insufficient for the stepless locking required by intelligent transport robots in any working state. While band brakes, disc brakes, and friction clutches can achieve stepless locking, they require extremely high locking forces, making them difficult to implement in intelligent transport robots due to space and power limitations. Therefore, designing a mechanism that is simple in structure, reliable in operation, requires low locking force, and can achieve stepless locking of rotating parts is essential. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a spiral stepless rotation locking mechanism, which aims to solve the problems in the prior art.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0006] A spiral stepless rotary locking mechanism includes a spiral nut, a screw assembly, and a locking device. The spiral nut is rotatable about its own axis. The screw assembly is installed at one end of the spiral nut, is coaxial with the spiral nut, and is threadedly connected to the spiral nut at one end. The locking device is installed at the other end of the screw assembly and is used to lock or release the screw assembly.

[0007] The beneficial effects of this invention are: when in use, the locking device locks the screw assembly, thereby locking the spiral nut that is threadedly connected to the screw assembly, and locking the rotating part that is fixedly connected to the spiral nut, thus achieving stepless locking of the rotating part and making locking convenient.

[0008] This invention provides a stepless rotary locking mechanism with simple structure, reliable operation, and low locking force, which is used to steplessly lock rotating parts. The locking driving force is small, and it can achieve stepless locking of rotating parts.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the screw assembly includes a helical screw and a locking push rod. The helical screw is coaxially distributed with the helical nut, and one end of the helical screw is threadedly connected to the helical nut. The locking push rod is coaxially distributed with the helical screw, and one end of the locking push rod is fixedly connected to the other end of the helical screw. The locking device is installed at the other end of the locking push rod and is used to lock or release the locking push rod.

[0011] The beneficial effect of adopting the above-mentioned further solution is that, in use, the locking device locks the locking push rod, thereby locking the spiral screw fixedly connected to the locking push rod, and then locking the spiral nut threadedly connected to the spiral screw, so as to lock the rotating part fixedly connected to the spiral nut, realizing stepless locking of the rotating part, which is convenient.

[0012] Furthermore, the spiral nut is provided with an internal thread, and one end of the spiral screw is provided with an external thread, which extends into the spiral nut and is threadedly connected to the spiral nut.

[0013] The advantages of adopting the above-mentioned further solution are that the structure is simple, the design is reasonable, and one end of the spiral screw is connected to the spiral nut by a thread, making it easy to disassemble and assemble.

[0014] Furthermore, the locking device includes a support plate, a locking block, and a driving member. The support plate is fixedly disposed at the other end of the locking push rod and extends along an axial direction perpendicular to the locking push rod. The locking block is mounted on the support plate and can slide radially along the locking push rod. The driving member is fixedly mounted on the support plate, and its driving end is fixedly connected to the locking block for driving the locking block to slide to lock or release the locking push rod.

[0015] The beneficial effect of adopting the above-mentioned further solution is that, in use, the locking block is driven by the driving component to slide to lock or release the locking push rod to lock the locking push rod, thereby locking the spiral screw fixedly connected to the locking push rod, and then locking the spiral nut threadedly connected to the spiral screw, thereby locking the rotating part fixedly connected to the spiral nut, realizing stepless locking of the rotating part, and making locking convenient.

[0016] Furthermore, one end of the locking block and the other end of the locking push rod are respectively inclined and can slide against each other.

[0017] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. It utilizes the special structure of the locking block and the locking push rod to achieve sliding contact between the two, thereby realizing the locking of the locking push rod. The locking is convenient and the stability is good.

[0018] Furthermore, a radial positioning block is fixedly installed on the support plate, and the radial positioning block slides and fits against the locking push rod.

[0019] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. The locking push rod is radially positioned by the radial positioning block, which avoids the locking push rod from being in the radial position and further increases the stability of the entire device.

[0020] Furthermore, the screw assembly also includes a fixing plate, which is fixedly disposed and extends along an axial direction perpendicular to the helical screw, and an elastic element is also mounted on it. The two ends of the elastic element abut against the fixing plate and the other end of the helical screw, respectively; the locking push rod passes through the fixing plate.

[0021] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. The fixed plate can support the locking push rod, thereby increasing the stability of the entire device. In addition, the above-mentioned elastic element gives the locking push rod a preload to ensure the locking effect.

[0022] Furthermore, a spring seat is fixedly installed on the side of the fixing plate near the spiral screw, and the spring seat has a groove; the spiral screw has a structure that is thin at one end and thick at the other end, and its interior is hollow with both ends open; one end of the locking push rod extends from the thick end of the spiral screw into its interior and is fixedly connected; the elastic element includes a spring, which is sleeved on the locking push rod, and its two ends extend to the thick end of the spiral screw and into the groove respectively and abut against it.

[0023] The advantages of adopting the above-mentioned further solution are that the structure is simple, the design is reasonable, the spring is in a compressed state when locked, and the elasticity of the spring is used to increase the locking force, making the locking more stable.

[0024] Furthermore, one end of the locking push rod is provided with an annular step, and one end of the locking push rod extends into the thin end of the spiral screw and is fixedly connected thereto, and the step surface of the annular step abuts against the bottom wall of the thick end of the spiral screw.

[0025] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable. By utilizing the special structure of one end of the locking push rod and cooperating with the helical screw, the installation is more stable.

[0026] Furthermore, the thicker end of the helical screw extends into the groove.

[0027] The advantages of adopting the above-mentioned further solution are that the structure is simple and the design is reasonable, which further increases the stability of the screw installation and ensures that it can move stably along its own axis. Attached Figure Description

[0028] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention;

[0029] Figure 2 This is a second three-dimensional structural schematic diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 4 This is an internal sectional view of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the present invention when the stroke is at its maximum.

[0033] Figure 6 This is a schematic diagram of the structure when the stroke of the present invention is minimized.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1. Spiral nut; 2. Spiral screw; 3. Locking push rod; 4. Support plate; 5. Locking block; 6. Driving component; 7. Radial positioning block; 8. Fixing plate; 9. Spring seat; 10. Spring. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Example 1

[0041] like Figures 1 to 6 As shown, this embodiment provides a spiral stepless rotary locking mechanism, including a spiral nut 1, a screw assembly, and a locking device. The spiral nut 1 can rotate around its own axis. The screw assembly is installed at one end of the spiral nut 1, is coaxial with the spiral nut 1, and is threadedly connected to the spiral nut 1 at one end. The locking device is installed at the other end of the screw assembly and is used to lock or release the screw assembly.

[0042] In use, the locking device is used to lock the screw assembly, thereby locking the spiral nut 1 that is threadedly connected to the screw assembly, and locking the rotating part that is fixedly connected to the spiral nut 1, so as to realize stepless locking of the rotating part and convenient locking.

[0043] Preferably, in this embodiment, the other end of the spiral nut 1 is fixedly connected to a flange, and is fixedly connected to the rotating component through the flange. In use, the spiral nut 1 is rotated by the rotating component.

[0044] In addition, the aforementioned screw assembly and locking device are respectively mounted on an external carrier, such as a wall or external equipment.

[0045] This embodiment provides a stepless rotary locking mechanism with simple structure, reliable operation, and low locking force, which is used to steplessly lock rotating parts. The locking driving force is small, and it can achieve stepless locking of rotating parts.

[0046] Example 2

[0047] Based on Embodiment 1, in this embodiment, the screw assembly includes a helical screw 2 and a locking push rod 3. The helical screw 2 is coaxially distributed with the helical nut 1, and one end of the helical screw 2 is threadedly connected to the helical nut 1. The locking push rod 3 is coaxially distributed with the helical screw 2, and one end of the locking push rod 3 is fixedly connected to the other end of the helical screw 2. The locking device is installed at the other end of the locking push rod 3 for locking or releasing the locking push rod 3.

[0048] In use, the locking device locks the locking push rod 3, thereby locking the spiral screw 2 fixedly connected to the locking push rod 3, and then locking the spiral nut 1 threadedly connected to the spiral screw 2, so as to lock the rotating part fixedly connected to the spiral nut 1, realizing stepless locking of the rotating part, which is convenient.

[0049] Preferably, in this embodiment, the locking push rod 3 has a cylindrical structure.

[0050] Alternatively, the aforementioned spiral screw 2 can also adopt a columnar structure.

[0051] Example 3

[0052] Based on Embodiment 2, in this embodiment, the spiral nut 1 is provided with an internal thread, and one end of the spiral screw 2 is provided with an external thread, which extends into the spiral nut 1 and is threadedly connected to the spiral nut 1.

[0053] The scheme has a simple structure and reasonable design. One end of the spiral screw 2 is connected to the spiral nut 1 by a thread, which makes it easy to disassemble and assemble.

[0054] Example 4

[0055] Based on any one of Embodiments 2 to 3, in this embodiment, the locking device includes a support plate 4, a locking block 5, and a driving member 6. The support plate 4 is fixedly disposed at the other end of the locking push rod 3 and extends along an axial direction perpendicular to the locking push rod 3. The locking block 5 is mounted on the support plate 4 and can slide radially along the locking push rod 3. The driving member 6 is fixedly mounted on the support plate 4, and its driving end is fixedly connected to the locking block 5 for driving the locking block 5 to slide to lock or release the locking push rod 3.

[0056] In use, the locking block 5 is driven by the driving component 6 to slide to lock or release the locking push rod 3 to lock the locking push rod 3 (preventing the locking push rod 3 from rotating), thereby locking the spiral screw 2 fixedly connected to the locking push rod 3 (preventing the spiral screw 2 from rotating), and then locking the spiral nut 1 threadedly connected to the spiral screw 2 (preventing the spiral nut 1 from rotating), thereby locking the rotating component fixedly connected to the spiral nut 1, realizing stepless locking of the rotating component, and making locking convenient.

[0057] Preferably, in this embodiment, the support plate 4 is a flat plate structure, which can be a rectangular plate or a circular plate, etc.

[0058] It should be noted that the word "lock" above refers to preventing the corresponding components from rotating.

[0059] The aforementioned support plate 4 is fixed to a carrier, such as a wall or external equipment, during assembly.

[0060] Alternatively, the aforementioned driving component 6 can be a telescopic cylinder, in which case the telescopic end of the telescopic cylinder is directly and fixedly connected to the locking block 5, and the movement of the locking block 5 is achieved by the telescopic cylinder's extension and retraction; the driving component 6 can also be a lead screw assembly, in which case the locking block 5 is fixedly connected to the nut in the lead screw assembly.

[0061] The driving end of the aforementioned driving component 6 can be directly fixedly connected to the locking block 5, or it can be fixedly connected to the locking block 5 through a connecting plate.

[0062] Example 5

[0063] Based on embodiment 4, in this embodiment, one end of the locking block 5 and the other end of the locking push rod 3 are respectively inclined and can slide against each other.

[0064] The solution has a simple structure and reasonable design. It utilizes the special structure of the locking block 5 and the locking push rod 3 to achieve sliding contact between the two, thereby locking the locking push rod 3. The locking is convenient and has good stability.

[0065] Preferably, in this embodiment, the locking block 5 is a wedge-shaped block.

[0066] The locking block 5 and the locking push rod 3 are self-locked by the friction between them and their relative positions, without the need for any other locking components, making self-locking convenient.

[0067] Example 6

[0068] Based on any one of Embodiments 4 to 5, in this embodiment, a radial positioning block 7 is also fixedly installed on the support plate 4, and the radial positioning block 7 slides and fits against the locking push rod 3.

[0069] The solution has a simple structure and reasonable design. The locking push rod 3 is radially positioned by the radial positioning block 7, which avoids the locking push rod 3 from being in the radial position, and further increases the stability of the entire device.

[0070] Preferably, in this embodiment, the locking push rod 3 is provided with a directional groove, and one side of the radial positioning block 7 extends into the directional groove and slides into the directional groove.

[0071] In addition, the aforementioned directional groove is preferably an elongated groove that extends along the axial direction of the locking push rod 3.

[0072] Moreover, the radial positioning block 7 is preferably a long strip-shaped block structure that matches the shape of the directional groove.

[0073] Example 7

[0074] Based on any one of Embodiments 2 to 6, in this embodiment, the screw assembly further includes a fixing plate 8, which is fixedly disposed and extends along an axial direction perpendicular to the spiral screw 2, and an elastic element is also installed on it. The two ends of the elastic element abut against the fixing plate 8 and the other end of the spiral screw 2, respectively; the locking push rod 3 passes through the fixing plate 8.

[0075] The solution has a simple structure and reasonable design. The fixed plate 8 can support the locking push rod 3, thereby increasing the stability of the entire device. In addition, the above-mentioned elastic element gives the locking push rod 3 a preload to ensure the locking effect.

[0076] Preferably, in this embodiment, the fixing plate 8 is a plate-shaped structure, which can be a rectangular plate or a circular plate, etc.

[0077] In addition, the shape of the fixing plate 8 can be the same as the shape of the support plate 4, or it can be different from the shape of the support plate 4.

[0078] The aforementioned fixing plate 8 is fixed to a carrier, such as a wall or external equipment, during assembly.

[0079] Example 8

[0080] Based on Embodiment 7, in this embodiment, a spring seat 9 is fixedly installed on the side of the fixing plate 8 near the spiral screw 2, and the spring seat 9 is provided with a groove; the spiral screw 2 has a structure that is thin at one end and thick at the other end, and its interior is hollow with both ends open; one end of the locking push rod 3 extends from the thick end of the spiral screw 2 into its interior and is fixedly connected; the elastic element includes a spring 10, which is sleeved on the locking push rod 3, and its two ends extend to the thick end of the spiral screw 2 and into the groove respectively and abut against it.

[0081] The solution has a simple structure and reasonable design. When locked, the spring 10 is in a compressed state, and the elasticity of the spring 10 is used to increase the locking force, making the locking more stable.

[0082] Preferably, in this embodiment, the spring seat 9 has a cylindrical structure.

[0083] In addition, the aforementioned groove is a circular groove.

[0084] Example 9

[0085] Based on embodiment 8, in this embodiment, one end of the locking push rod 3 is provided with an annular step, one end of the locking push rod 3 extends into the thin end of the spiral screw 2 and is fixedly connected, and the step surface of the annular step abuts against the bottom wall of the thick end of the spiral screw 2.

[0086] The solution has a simple structure and a reasonable design. It utilizes the special structure of one end of the locking push rod 3 to cooperate with the spiral screw 2, making the installation more stable.

[0087] Example 10

[0088] Based on any one of Embodiments 8 to 9, in this embodiment, the thick end of the spiral screw 2 extends into the groove.

[0089] The scheme has a simple structure and reasonable design, which further increases the stability of the installation of the spiral screw 2 and ensures that it can move stably along its own axis.

[0090] The working principle of this invention is as follows:

[0091] In use, the locking block 5 is driven by the driving component 6 to slide to lock or release the locking push rod 3 to lock the locking push rod 3, thereby locking the spiral screw 2 which is fixedly connected to the locking push rod 3, and then locking the spiral nut 1 which is threadedly connected to the spiral screw 2, thereby locking the rotating part which is fixedly connected to the spiral nut 1, realizing stepless locking of the rotating part, which is convenient to lock;

[0092] When the external rotating component drives the spiral nut 1 to rotate in the forward direction, the spiral screw 2 moves in the direction of the spring 10's relaxation. The spring 10 is released, and the driving component 6 pushes the locking block 5 to move along the inclined plane (at this time, the locking block 5 moves upward in the direction shown in the attached figure and is in contact with the locking push rod 3). When it rotates to any working position, under the action of the spring 10 and the locking block 5, the spiral screw 2 is locked and cannot move in the reverse direction, thereby achieving the purpose of stepless locking of the external rotating component by the mechanism.

[0093] When the external rotating component needs to drive the spiral nut 1 to rotate in the opposite direction, the driving component 6 drives the locking block 5 to unlock from the inclined surface of the locking push rod 3 (at this time, the locking block 5 moves downward in the direction shown in the attached figure and separates from the locking push rod 3). Only then can the spiral screw 2 rotate, and the spiral screw 2 moves in the contraction direction of the spring 10, and the spring 10 is compressed.

[0094] It should be noted that all electronic components involved in this invention adopt existing technology, and all the above-mentioned components are electrically connected to the controller, and the control circuit between the controller and each component is existing technology.

[0095] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0096] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A spiral-type stepless rotary locking mechanism, characterized in that: The device includes a spiral nut (1), a screw assembly, and a locking device. The spiral nut (1) is rotatable about its own axis. The screw assembly is installed at one end of the spiral nut (1), is coaxial with the spiral nut (1), and is threaded to the spiral nut (1) at one end. The locking device is installed at the other end of the screw assembly and is used to lock or release the screw assembly. The screw assembly includes a helical screw (2) and a locking push rod (3). The helical screw (2) is coaxially distributed with the helical nut (1), and one end of the helical screw (2) is threadedly connected to the helical nut (1). The locking push rod (3) is coaxially distributed with the helical screw (2), and one end of the locking push rod (3) is fixedly connected to the other end of the helical screw (2). The locking device is installed at the other end of the locking push rod (3) and is used to lock or release the locking push rod (3). The locking device includes a support plate (4), a locking block (5), and a driving member (6). The support plate (4) is fixedly disposed at the other end of the locking push rod (3) and extends along an axial direction perpendicular to the locking push rod (3). The locking block (5) is mounted on the support plate (4) and can slide radially along the locking push rod (3). The driving member (6) is fixedly mounted on the support plate (4) and its driving end is fixedly connected to the locking block (5) for driving the locking block (5) to slide to lock or release the locking push rod (3).

2. The spiral stepless rotary locking mechanism according to claim 1, characterized in that: The spiral nut (1) has an internal thread, and one end of the spiral screw (2) has an external thread that extends into the spiral nut (1) and is threadedly connected to the spiral nut (1).

3. The spiral stepless rotary locking mechanism according to claim 1, characterized in that: One end of the locking block (5) and the other end of the locking push rod (3) are respectively inclined and can slide against each other.

4. The spiral continuously rotating locking mechanism according to claim 1, characterized in that: A radial positioning block (7) is also fixedly installed on the support plate (4), and the radial positioning block (7) slides and fits against the locking push rod (3).

5. The spiral continuously rotating locking mechanism according to any one of claims 1-4, characterized in that: The screw assembly also includes a fixing plate (8), which is fixedly installed and extends along the axial direction perpendicular to the helical screw (2). An elastic element is also installed on the fixing plate (8), and the two ends of the elastic element abut against the fixing plate (8) and the other end of the helical screw (2), respectively. The locking push rod (3) passes through the fixing plate (8).

6. The spiral continuously rotating locking mechanism according to claim 5, characterized in that: A spring seat (9) is fixedly installed on the side of the fixing plate (8) near the spiral screw (2), and the spring seat (9) is provided with a groove; the spiral screw (2) has a structure that is thin at one end and thick at the other end, and its interior is hollow and both ends are open; one end of the locking push rod (3) extends from the thick end of the spiral screw (2) into its interior and is fixedly connected; the elastic element includes a spring (10), which is sleeved on the locking push rod (3), and its two ends extend to the thick end of the spiral screw (2) and the groove respectively and abut against it.

7. The spiral continuously rotating locking mechanism according to claim 6, characterized in that: One end of the locking push rod (3) is provided with an annular step. One end of the locking push rod (3) extends into the thin end of the spiral screw (2) and is fixedly connected. The step surface of the annular step abuts against the bottom wall of the thick end of the spiral screw (2).

8. The spiral continuously rotating locking mechanism according to claim 6, characterized in that: The thick end of the spiral screw (2) extends into the groove.

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