Lead screw guide locking device and moving system

Abstract

The application provides a screw guide rail locking device and a moving system, wherein the screw guide rail comprises a screw and a screw support seat, the screw is arranged through the screw support seat and can rotate relative to the screw support seat, the locking device comprises: a hand wheel assembly fixedly connected with a free end of the screw to drive the screw to rotate, the hand wheel assembly is provided with a positioning groove; a movable pin assembly is arranged on the screw support seat and is arranged opposite to the hand wheel assembly, the movable pin assembly comprises a movable pin, the movable pin is matched with the positioning groove; when the movable pin moves into the positioning groove, the movable pin limits the hand wheel assembly to lock the screw. The application can limit the rotation of the screw, and avoid the problem of locking failure when the screw is locked by its own friction force during operation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to a lead screw guide rail locking device and a moving system. Background Technology

[0002] Lead screw guides are commonly used in mechanical manufacturing and experimental testing. During use, lead screw guides are usually locked by their own friction. This locking method has the risk of failure and affects the normal use of lead screw guides. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose a lead screw guide rail locking device and moving system to solve the problem of the risk of locking failure of the lead screw guide rail.

[0004] To achieve the above objectives, this utility model provides a lead screw guide rail locking device. The lead screw guide rail includes a lead screw and a lead screw support base. The lead screw passes through the lead screw support base and is rotatable relative to the lead screw support base. The locking device includes: A handwheel assembly is fixedly connected to the free end of the lead screw to drive the lead screw to rotate; the handwheel assembly is provided with a positioning groove. A spring-loaded pin assembly is located on the lead screw support seat and is disposed opposite to the handwheel assembly. The spring-loaded pin assembly includes a movable pin, which is adapted to the positioning groove. When the movable pin moves into the positioning groove, the movable pin limits the handwheel assembly to lock the lead screw.

[0005] Furthermore, the handwheel assembly includes a rotatably connected rotary handwheel and a rotating handle. The rotary handwheel has a plate-like structure with a connecting through hole in its middle that is adapted to the free end of the lead screw, allowing the free end of the lead screw to pass through and being fixedly connected to the lead screw. The rotating handwheel includes a first side and a second side that are arranged opposite to each other. The first side is located away from the lead screw support, and a portion of the second side is recessed toward the first side to form the positioning groove. The rotating handle is located on the first side and is located near the edge of the rotating handwheel.

[0006] Furthermore, a connecting boss is provided on the first side, the connecting boss is arranged around the connecting through hole, and the connecting boss is provided with a plurality of set screw through holes for connecting with set screws. The set screw passes through the set screw through holes and abuts against the lead screw, so that the lead screw is fixedly connected relative to the rotating handwheel.

[0007] Furthermore, the spring pin assembly also includes a fixed housing and an adjusting rod. The fixed housing is fixedly connected to the lead screw support. The movable pin passes through the fixed housing and can move relative to the fixed housing. The movable pin has an adjusting through hole adapted to the adjusting rod. The top surface of the fixed housing has an operating through hole that extends along the length of the movable pin. The adjusting rod passes through the operating through hole and the adjusting through hole. The adjusting rod is used to drive the movable pin to move relative to the fixed housing, so that the movable pin enters the positioning groove to lock the lead screw, or moves away from the positioning groove to unlock the lead screw.

[0008] Furthermore, the spring pin assembly also includes an elastic element, which is sleeved around the movable pin and located inside the fixed housing. One end of the elastic element abuts against the fixed housing, and the other end abuts against the adjusting rod. The adjusting rod, under the rebound action of the elastic element, drives the movable pin to move into the positioning groove. When the adjusting rod compresses the elastic element, the movable pin moves away from the positioning groove along with the adjusting rod.

[0009] Furthermore, the movable pin includes a first segment and a second segment connected together. The first segment is disposed near the positioning groove, and the second segment includes a plane. The adjustment through hole is located in the first segment, and the through direction of the adjustment through hole is perpendicular to the plane.

[0010] Furthermore, the positioning groove is provided in multiple ways, and the multiple positioning grooves are arranged in a ring with the free end of the lead screw as the center.

[0011] Furthermore, the spring pin assembly also includes an adjustment handle, which is connected to the end of the adjustment rod located outside the fixed housing.

[0012] Furthermore, the top of the lead screw support has a limiting protrusion, and the bottom of the fixed housing has a limiting groove. The limiting groove is adapted to the limiting protrusion, and the limiting protrusion is located within the limiting groove.

[0013] Based on the same inventive concept, this application also provides a mobile system, including the lead screw guide rail locking device, lead screw guide rail, mobile platform and support rail as described above. The lead screw guide rail includes a lead screw and a lead screw support seat that are rotatably connected. The mobile platform is threadedly connected to the lead screw and slidably connected to the support rail. The support rail is arranged parallel to the lead screw. When the lead screw rotates, the moving platform moves relative to the lead screw and slides within the support rail. The guide rail locking device is connected to the lead screw guide rail to lock or unlock the lead screw.

[0014] As can be seen from the above description, this utility model provides a lead screw guide rail locking device and moving system. The lead screw guide rail includes a lead screw and a lead screw support seat rotatably connected. The locking device includes a handwheel assembly and a spring pin assembly. The handwheel assembly is fixedly connected to the free end of the lead screw to drive the lead screw to rotate. The handwheel assembly has a positioning groove. The spring pin assembly is located on the lead screw support seat and is arranged opposite to the handwheel assembly. The movable pin of the spring pin assembly is used to move into the positioning groove of the handwheel assembly, so that the handwheel assembly is fixed relative to the lead screw support seat and cannot rotate relative to the lead screw support seat. Consequently, the lead screw cannot rotate relative to the lead screw support seat, thus achieving locking of the lead screw. This application, by setting a handwheel assembly and a spring pin assembly, enables the lead screw to be unable to rotate under the limiting action of the movable pin and the positioning groove, achieving locking. This restricts the rotation of the lead screw and avoids the problem of locking failure when the lead screw relies on its own friction to lock during operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a lead screw guide rail locking device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the handwheel assembly in an embodiment of the present utility model. Figure 1 ; Figure 3 This is a schematic diagram of the handwheel assembly in an embodiment of the present utility model. Figure 2 ; Figure 4 This is a three-dimensional structural diagram of the spring pin assembly according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the internal structure of the spring pin assembly according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the structure of the movable pin in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the structure of a mobile system according to an embodiment of the present invention.

[0017] In the diagram: 100, lead screw guide rail; 110, lead screw; 120, lead screw support seat; 121, limiting protrusion; 200, locking device; 210, handwheel assembly; 211, positioning groove; 212, rotating handwheel; 2121, connecting through hole; 2122, first side; 2123, second side; 2124, connecting boss; 2125, top screw through hole; 213, rotating handle; 220, spring pin assembly; 221, moving pin; 2211, adjusting through hole; 2212, first section; 2213, second section; 222, fixed housing; 2221, operating through hole; 2222, limiting groove; 223, adjusting rod; 224, elastic element; 225, adjusting handle; 300, moving platform; 400, support rail. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] In a lead screw and nut structure, the lead screw acts as a moving guide, enabling linear motion of a platform or other components threadedly connected to it by rotating the lead screw. Currently, when a lead screw and nut is mounted on a high-speed rotor, the guide rail is typically locked using the friction between a guide rail clamp and the lead screw to ensure operational stability. However, this locking mechanism is susceptible to failure, which could lead to dangerous situations during high-speed rotation of the lead screw and jeopardize its safe operation.

[0021] Based on this, this application proposes a lead screw guide rail locking device and moving system, which uses the limiting effect between the positioning groove and the moving pin to lock the lead screw guide rail, greatly reducing the failure of lead screw guide rail locking and improving the safety of lead screw guide rail use.

[0022] In some embodiments, a lead screw guide locking device, such as Figure 1 As shown, the lead screw guide rail 100 includes a lead screw 110 and a lead screw support 120. The lead screw 110 passes through the lead screw support 120 and is rotatable relative to the lead screw support 120. The locking device 200 includes: The handwheel assembly 210 is fixedly connected to the free end of the lead screw 110 to drive the lead screw 110 to rotate. The handwheel assembly 210 is provided with a positioning groove 211. A spring pin assembly 220 is located on the lead screw support seat 120 and is disposed opposite to the handwheel assembly 210. The spring pin assembly 220 includes a movable pin 221, which is adapted to the positioning groove 211. When the movable pin 221 moves into the positioning groove 211, the movable pin 221 limits the handwheel assembly 210 to lock the lead screw 110.

[0023] Specifically, the lead screw guide rail 100 includes a lead screw 110 and a lead screw support 120. The lead screw 110 passes through the lead screw support 120 and can rotate relative to the lead screw support 120. The lead screw 110 and the lead screw support 120 are rotatably connected by a bearing to reduce the friction between the lead screw 110 and the lead screw support 120 and improve the rotational flexibility of the lead screw 110. When the lead screw 110 rotates relative to the lead screw support 120, the nut threadedly connected to the lead screw 110 moves along the length of the lead screw 110. The lead screw 110 acts as a guide rail. The nut connects to a moving platform 300 or other components, enabling the moving platform 300 or other components to move linearly along the lead screw 110.

[0024] The free end of the lead screw 110 is the end of the lead screw 110 that is close to the lead screw support 120 and is suspended without any other connecting structure. The handwheel assembly 210 is fixedly connected to the free end of the lead screw 110, so that the rotation of the lead screw 110 and the handwheel assembly 210 is synchronized. By rotating the handwheel assembly 210, the lead screw 110 is driven to rotate. When the lead screw 110 rotates under the drive of the rotor, the handwheel assembly 210 rotates with the lead screw 110. Therefore, when the handwheel assembly 210 is locked, the lead screw 110 can be locked.

[0025] The spring pin assembly 220 is fixedly connected to the lead screw support 120 and is disposed opposite to the handwheel assembly 210. The movable pin 221 of the spring pin assembly 220 can move relative to the lead screw support 120 into the positioning groove 211 of the handwheel assembly 210, so that the handwheel assembly 210 cannot rotate relative to the lead screw support 120 under the limiting action of the positioning groove 211 and the movable pin 221, thereby achieving the locking of the handwheel assembly 210 and the lead screw 110.

[0026] It should be noted that the movable pin 221 can move to be located within the positioning groove 211 or to be located away from the positioning groove 211. When the movable pin 221 is located within the positioning groove 211, the handwheel assembly 210 and the lead screw 110 are locked and cannot be rotated. When the movable pin 221 leaves the positioning groove 211, the handwheel assembly 210 and the lead screw 110 are unlocked and can be rotated. As a result, the lead screw 110 can rotate relative to the lead screw support 120, thereby driving the threaded components of the lead screw 110 to move.

[0027] In addition, the edges of the positioning groove 211 and the edge of the movable pin 221 near the positioning groove 211 are chamfered, and the inner diameter of the positioning groove 211 is slightly larger than the outer diameter of the movable pin 221 near the positioning groove 211, so that the movable pin 221 can enter the positioning groove 211.

[0028] In this embodiment, the lead screw guide rail 100 includes a lead screw 110 and a lead screw support 120 rotatably connected. The locking device 200 includes a handwheel assembly 210 and a spring pin assembly 220. The handwheel assembly 210 is fixedly connected to the free end of the lead screw 110 to drive the lead screw 110 to rotate. The handwheel assembly 210 is provided with a positioning groove 211. The spring pin assembly 220 is located on the lead screw support 120 and is arranged opposite to the handwheel assembly 210. The movable pin 221 of the spring pin assembly 220 is used to move into the positioning groove 211 of the handwheel assembly 210, so that the handwheel assembly 210 is fixed relative to the lead screw support 120 and cannot rotate relative to the lead screw support 120. As a result, the lead screw 110 cannot rotate relative to the lead screw support 120, thereby locking the lead screw 110. This application sets up a handwheel assembly 210 and a spring pin assembly 220 so that the lead screw 110 can not rotate under the limiting action of the moving pin 221 and the positioning groove 211, thereby achieving locking. This can limit the rotation of the lead screw 110 and avoid the problem of locking failure when the lead screw 110 relies on its own friction to lock during operation.

[0029] In some embodiments, such as Figure 2 and Figure 3As shown, the handwheel assembly 210 includes a rotating handwheel 212 and a rotating handle 213 that are rotatably connected. The rotating handwheel 212 has a plate-shaped structure, and its middle part is provided with a connecting through hole 2121 that is adapted to the free end of the lead screw 110 for the free end of the lead screw 110 to pass through, and is fixedly connected to the lead screw 110. The rotating handwheel 212 includes a first side 2122 and a second side 2123 disposed opposite to each other. The first side 2122 is disposed away from the lead screw support seat 120. A portion of the second side 2123 is recessed toward the first side 2122 to form the positioning groove 211. The rotating handle 213 is located on the first side 2122 and is disposed close to the edge of the rotating handwheel 212.

[0030] Specifically, the rotating handle 213 is located near the edge of the rotating handwheel 212 and is rotatably connected to the rotating handwheel 212 so as to rotate relative to the rotating handwheel 212. When the user rotates the rotating handwheel 212 through the rotating handle 213, the rotatable connection between the rotating handle 213 and the rotating handwheel 212 can improve the user's operational convenience, making it easier for the user to rotate the rotating handwheel 212 through the rotating handle 213. Furthermore, the rotating handle 213 is located near the edge of the rotating handwheel 212, and by utilizing the lever principle, the distance between the rotating handle 213 and the center of the rotating handwheel 212 is relatively long, which can improve the ease with which the user rotates the rotating handwheel 212.

[0031] The rotating handwheel 212 has a plate-like structure and is arranged opposite to the spring pin assembly 220. The free end of the lead screw 110 passes through the connecting through hole 2121 located in the middle of the rotating handwheel 212 and is fixedly connected to the rotating handwheel 212 so as to realize that the rotation of the rotating handwheel 212 is synchronized with the rotation of the lead screw 110.

[0032] The side of the rotating handwheel 212 closest to the spring pin assembly 220, i.e. the lead screw support 120, is the second side surface 2123, and the side of the rotating handwheel 212 away from the spring pin assembly 220 is the first side surface 2122. The first side surface 2122 and the second side surface 2123 are arranged opposite to each other. Part of the second side surface 2123 is recessed into the first side surface 2122 to form the positioning groove 211, so that the movable pin 221 of the spring pin assembly 220 is located in the positioning groove 211.

[0033] It should be noted that there may be multiple positioning grooves 211, which are arranged around the connecting through hole 2121, so that when the handwheel assembly 210 is rotated to any position, the movable pin 221 can be moved into one of the positioning grooves 211, thereby improving the practicality of the locking device 200.

[0034] In this embodiment, the handwheel assembly 210 includes a rotatably connected rotating handwheel 212 and a rotating handle 213. The rotating handwheel 212 has a plate-like structure. The free end of the lead screw 110 passes through the connecting through hole 2121 in the middle of the rotating handwheel 212 and is fixedly connected to the rotating handwheel 212. The rotating handle 213 is located near the edge of the rotating handwheel 212 so that the user can control the rotation of the rotating handwheel 212 through the rotating handle 213. The side of the rotating handwheel 212 near the lead screw support 120 is the second side 2123, and the side away from the lead screw support 120 is the first side 2122. Part of the second side 2123 is recessed into the first side 2122 to form the positioning groove 211, so that the movable pin 221 of the spring pin assembly 220 connected to the lead screw support 120 can enter the positioning groove 211, thereby facilitating the locking of the handwheel assembly 210 and the lead screw 110 and improving the practicality of the locking device 200.

[0035] In some embodiments, such as Figure 2 As shown, the first side surface 2122 is provided with a connecting boss 2124. The connecting boss 2124 is arranged around the connecting through hole 2121. The connecting boss 2124 is provided with a plurality of set screw through holes 2125 for connecting with set screws. The set screw passes through the set screw through holes 2125 and abuts against the lead screw 110 so that the lead screw 110 is fixedly connected to the rotating handwheel 212.

[0036] Specifically, the connecting boss 2124 is an annular structure surrounding the connecting through hole 2121. The connecting boss 2124 is provided with multiple set screw through holes 2125. The set screw passes through the set screw through hole 2125 and is fixedly connected to the set screw through hole 2125, and abuts against the portion of the lead screw 110 located in the connecting through hole 2121. The multiple set screws abut against the lead screw 110 together, so that the lead screw 110 and the rotating handwheel 212 are fixedly connected in both the axial and circumferential directions of the lead screw 110. That is, the lead screw 110 cannot be pulled out from the connecting through hole 2121, which is beneficial to the connection stability of the lead screw 110 and the rotating handwheel 212.

[0037] In addition, multiple grooves corresponding to the top screw through hole 2125 can be provided on the free end of the lead screw 110. The top screw passes through the top screw through hole 2125 and is threadedly connected to the groove to connect the rotating handwheel 212 and the lead screw 110.

[0038] It should be noted that a boss is provided on the periphery of the free end of the lead screw 110, and the connecting through hole 2121 is adapted to the free end of the lead screw 110 so that while the free end of the lead screw 110 passes through the connecting through hole 2121, the boss engages with the annular groove in the connecting through hole 2121 that is adapted to the boss, so that the rotating handwheel 212 is fixedly connected to the lead screw 110 in its circumference, and the rotating handwheel 212 and the lead screw 110 can rotate synchronously.

[0039] Finally, the connecting boss 2124 has an annular structure, and the set screw through holes 2125 are evenly arranged on the connecting boss 2124 so that the set screw can apply force evenly to the lead screw 110, which is beneficial to improving the connection stability of the lead screw 110 and the rotating handwheel 212.

[0040] It should be noted that the connecting boss 2124 can also be located on the second side 2123. However, since the second side 2123 is close to the spring pin assembly 220, if the connecting boss 2124 is located on the second side 2123, the spring pin assembly 220 will affect the installation of the set screw when the set screw is installed, which is not conducive to the installation efficiency of the locking device 200. Setting the connecting boss 2124 on the first side 2122 can avoid other structures from affecting the installation of the set screw, which is conducive to improving the installation efficiency of the locking device 200.

[0041] In this embodiment, the connecting boss 2124 is located on the first side surface 2122 and surrounds the connecting through hole 2121. The connecting boss 2124 is provided with a plurality of set screw through holes 2125 so that the set screw abuts against the lead screw 110 passing through the connecting through hole 2121 through the set screw through hole 2125, thereby connecting the rotating handwheel 212 to the lead screw 110 and ensuring the connection stability of the rotating handwheel 212 and the lead screw 110.

[0042] In some embodiments, such as Figure 4 and Figure 5As shown, the spring pin assembly 220 further includes a fixed housing 222 and an adjusting rod 223. The fixed housing 222 is fixedly connected to the lead screw support 120. The movable pin 221 is disposed through the fixed housing 222 and can move relative to the fixed housing 222. The movable pin 221 is provided with an adjusting through hole 2211 adapted to the adjusting rod 223. The top surface of the fixed housing 222 is provided with an operating through hole 2221. The operating through hole 2221 extends in the length direction of the movable pin 221. The adjusting rod 223 passes through the operating through hole 2221 and the adjusting through hole 2211. The adjusting rod 223 is used to drive the movable pin 221 to move relative to the fixed housing 222, so that the movable pin 221 enters the positioning groove 211 to lock the lead screw 110, or moves away from the positioning groove 211 to unlock the lead screw 110.

[0043] Specifically, the spring pin assembly 220 is fixedly connected to the lead screw support 120 via the fixed housing 222. The movable pin 221 passes through the fixed housing 222 and is connected to the adjusting rod 223 to move with the adjusting rod 223. The adjusting rod 223 passes through the operating through hole 2221 and is connected to the movable pin 221 located within the fixed housing 222. The extending direction of the operating through hole 2221 is the same as the length direction of the movable pin 221. Therefore, the adjusting rod 223 can move in the extending direction of the operating through hole 2221, thereby driving the movable pin 221 to move in the length direction of the movable pin 221 to enter or move away from the positioning groove 211.

[0044] The movable pin 221 is provided with an adjustment through hole 2211 for connecting with the adjustment rod 223. The adjustment rod 223 passes through the adjustment through hole 2211 to connect with the movable pin 221. It should be noted that the inner wall of the adjustment through hole 2211 may be threaded, and the adjustment rod 223 may be a screw. That is, the adjustment rod 223 and the movable pin 221 can be threadedly connected through the adjustment through hole 2211 to achieve a fixed connection, which is beneficial to the connection stability of the adjustment rod 223 and the movable pin 221.

[0045] In addition, the adjusting rod 223 passes through the adjusting through hole 2211 and is connected to the moving pin 221, which can also enable the adjusting rod 223 to drive the moving pin 221 to move. The specific adjustment can be made according to the actual use needs.

[0046] In this embodiment, the spring pin assembly 220 includes the fixed housing 222, the adjusting rod 223, and the movable pin 221. The movable pin 221 is disposed through the fixed housing 222 and is movable relative to the fixed housing 222. The adjusting rod 223 is connected to the movable pin 221 located inside the fixed housing 222 to drive the movable pin 221 to move along the length direction of the movable pin 221, so that the movable pin 221 enters or moves away from the positioning groove 211, thereby realizing the movement of the movable pin 221 on the handwheel assembly. The locking and unlocking of the screw 110 and the fixed housing 222 is configured such that when the movable pin 221 is located in the positioning groove 211, the handwheel assembly 210 cannot rotate relative to the fixed housing 222 and the screw support 120 fixedly connected to the fixed housing 222, thereby locking the screw 110. The setting of the adjusting rod 223 makes it easy for the user to adjust the position of the movable pin 221, improving the ease of operation of the locking device 200.

[0047] In some embodiments, such as Figure 5 As shown, the spring pin assembly 220 also includes an elastic element 224, which is sleeved around the movable pin 221 and located inside the fixed housing 222. One end of the elastic element 224 abuts against the fixed housing 222, and the other end abuts against the adjusting rod 223. The adjusting rod 223, under the rebound action of the elastic member 224, drives the moving pin 221 to move into the positioning groove 211. When the adjusting rod 223 compresses the elastic member 224, the moving pin 221 moves away from the positioning groove 211 along with the adjusting rod 223.

[0048] Specifically, the elastic element 224 is located inside the fixed housing 222 and sleeved around the movable pin 221. One end of the elastic element 224 abuts against the fixed housing 222, and the other end abuts against the adjusting rod 223. The elastic element 224 has an elastic limiting effect on the adjusting rod 223, so that the adjusting rod 223 drives the movable pin 221 to always be located in the positioning groove 211 when it is not subjected to other external forces, that is, it always maintains the locking effect on the lead screw 110, which is beneficial to the locking continuity of the locking device 200 and improves the practicality of the locking device 200.

[0049] When the adjusting rod 223 compresses the elastic element 224 under the action of external force, the moving pin 221 moves away from the positioning groove 211 along with the adjusting rod 223, unlocking the lead screw 110, so that the lead screw 110 can rotate to drive the component threadedly connected to the lead screw 110 to move.

[0050] In some embodiments, such as Figure 6 As shown, the movable pin 221 includes a first segment 2212 and a second segment 2213 connected to each other. The first segment 2212 is disposed near the positioning groove 211, and the second segment 2213 includes a plane. The adjustment through hole 2211 is located in the first segment 2212, and the through direction of the adjustment through hole 2211 is perpendicular to the plane.

[0051] Specifically, the periphery of the first segment 2212 of the movable pin 221 is adapted to the positioning groove 211 and is located close to the positioning groove 211. The adjusting through hole 2211 is located in the first segment 2212, and the adjusting rod 223 passes through the adjusting through hole 2211. When the first segment 2212 is located in the positioning groove 211, the lead screw 110 is locked. The second segment 2213 is located away from the positioning groove 211. The periphery of the second segment 2213 includes a plane, and the through direction of the adjusting through hole 2211 is perpendicular to the plane. That is, the adjusting through hole 221... The penetrating direction of 1 is vertical, and the plane is horizontal. The vertical penetrating direction of the adjusting through hole 2211 facilitates the adjusting rod 223 to pass through the operating through hole 2221 on the top surface of the fixed housing 222 and then through the adjusting through hole 2211. The horizontal plane facilitates the positioning of the moving pin 221 after it passes through the fixed housing 222, so that the adjusting rod 223 can quickly pass through the adjusting through hole 2211, improving the installation efficiency of the spring pin assembly 220, and thus improving the installation efficiency and practicality of the locking device 200.

[0052] In some embodiments, such as Figure 1 and Figure 3 As shown, multiple positioning grooves 211 are provided, and the multiple positioning grooves 211 are arranged in a ring with the free end of the lead screw 110 as the center.

[0053] Specifically, multiple positioning grooves 211 are provided, and the multiple positioning grooves 211 are arranged around the connecting through hole 2121. The free end of the lead screw 110 passes through the connecting through hole 2121, and thus the multiple positioning grooves 211 are arranged around the free end of the lead screw 110. When the lead screw 110 and the handwheel assembly 210 rotate to different angles, there is a positioning groove 211 opposite to the moving pin 221, so that the moving pin 221 can enter the positioning groove 211 to lock the lead screw 110 and improve the practicality of the locking device 200.

[0054] In some embodiments, such as Figure 4 and Figure 5As shown, the spring pin assembly 220 also includes an adjustment handle 225, which is connected to one end of the adjustment rod 223 located outside the fixed housing 222.

[0055] Specifically, the adjusting handle 225 is connected to one end of the adjusting rod 223 located outside the fixed housing 222. One end of the adjusting rod 223 passes through the operating through hole 2221 and the adjusting through hole 2211 and is located inside the fixed housing 222. Since the operating through hole 2221 is located at the top of the fixed housing 222, the end of the adjusting rod 223 inside the fixed housing 222 is the bottom end, and the end outside the fixed housing 222 is the top end. The top end of the adjusting rod 223 is connected to the adjusting handle 225, which facilitates the user's operation of the adjusting handle 225, thereby facilitating the locking and unlocking of the lead screw 110 and improving the practicality of the locking device 200.

[0056] In some embodiments, such as Figure 1 and Figure 4 As shown, the top of the lead screw support 120 has a limiting protrusion 121, and the bottom of the fixed housing 222 has a limiting groove 2222. The limiting groove 2222 is adapted to the limiting protrusion 121, and the limiting protrusion 121 is located in the limiting groove 2222.

[0057] Specifically, the fixed housing 222 is located above the lead screw support 120. The top of the lead screw support 120 has a limiting protrusion 121, and the bottom of the fixed housing 222 has a limiting groove 2222. The limiting protrusion 121 and the limiting groove 2222 are adapted to each other. The limiting protrusion 121 is located within the limiting groove 2222, so that the fixed housing 222 and the lead screw support 120 can be quickly positioned, thereby improving the stability of the connection between the fixed housing 222 and the lead screw support 120 when bolted. This helps to improve the connection stability and installation efficiency of the fixed housing 222 and the lead screw support 120.

[0058] Based on the same inventive concept, this application also provides a mobile system, such as Figure 7 As shown, the moving system includes a lead screw guide rail 100 locking device 200, a lead screw guide rail 100, a moving platform 300, and a support rail as described above. The lead screw guide rail 100 includes a lead screw 110 and a lead screw support seat 120 that are rotatably connected. The moving platform 300 is threadedly connected to the lead screw 110 and slidably connected to the support rail. The support rail is arranged parallel to the lead screw 110. When the lead screw 110 rotates, the moving platform 300 moves relative to the lead screw 110 and slides within the support rail. The guide rail locking device 200 is connected to the lead screw guide rail 100 to lock or unlock the lead screw 110.

[0059] Specifically, the lead screw guide rail 100 includes a lead screw 110 and a lead screw support 120. The lead screw 110 passes through the lead screw support 120 and is rotatably connected to the lead screw support 120. The moving platform 300 is threadedly connected to the lead screw 110 so that when the lead screw 110 rotates, the moving platform 300 can move along the length direction of the lead screw 110. The moving platform 300 is located above the support rail and is slidably connected to the support rail. The support rail is arranged parallel to the lead screw 110. When the moving platform 300 moves under the action of the thread of the lead screw 110, the moving platform 300 slides relative to the support rail. The support rail provides support for the moving platform 300 to ensure the stability of the moving platform 300.

[0060] The locking device 200 is connected to the lead screw guide rail 100 to lock the lead screw 110 when the position of the moving platform 300 does not need to be moved, and to unlock the lead screw 110 when the position of the moving platform 300 needs to be moved by rotating the lead screw 110. The locking device 200 locks the lead screw 110 through the limiting action of the moving pin 221 and the positioning groove 211, which has a good locking effect and can avoid the locking failure during the use of the moving system, thus improving the safety of the moving system.

[0061] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the scope of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0062] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, 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 lead screw guide rail locking device, wherein the lead screw guide rail includes a lead screw and a lead screw support, the lead screw passing through the lead screw support and being rotatable relative to the lead screw support, characterized in that, The locking device includes: A handwheel assembly is fixedly connected to the free end of the lead screw to drive the lead screw to rotate; the handwheel assembly is provided with a positioning groove. A spring-loaded pin assembly is located on the lead screw support seat and is disposed opposite to the handwheel assembly. The spring-loaded pin assembly includes a movable pin, which is adapted to the positioning groove. When the movable pin moves into the positioning groove, the movable pin limits the handwheel assembly to lock the lead screw.

2. The lead screw guide rail locking device according to claim 1, characterized in that, The handwheel assembly includes a rotatably connected rotary handwheel and a rotating handle. The rotary handwheel has a plate-like structure with a connecting through hole in its middle that is adapted to the free end of the lead screw, allowing the free end of the lead screw to pass through and being fixedly connected to the lead screw. The rotating handwheel includes a first side and a second side that are arranged opposite to each other. The first side is located away from the lead screw support, and a portion of the second side is recessed toward the first side to form the positioning groove. The rotating handle is located on the first side and is located near the edge of the rotating handwheel.

3. The lead screw guide rail locking device according to claim 2, characterized in that, The first side is provided with a connecting boss, which surrounds the connecting through hole. The connecting boss is provided with a plurality of set screw through holes for connecting with set screws. The set screw passes through the set screw through holes and abuts against the lead screw, so that the lead screw is fixedly connected to the rotating handwheel.

4. The lead screw guide rail locking device according to claim 1, characterized in that, The spring pin assembly also includes a fixed housing and an adjusting rod. The fixed housing is fixedly connected to the lead screw support. The movable pin passes through the fixed housing and can move relative to the fixed housing. The movable pin has an adjusting through hole adapted to the adjusting rod. The top surface of the fixed housing has an operating through hole that extends along the length of the movable pin. The adjusting rod passes through the operating through hole and the adjusting through hole. The adjusting rod is used to drive the movable pin to move relative to the fixed housing, so that the movable pin enters the positioning groove to lock the lead screw, or moves away from the positioning groove to unlock the lead screw.

5. The lead screw guide rail locking device according to claim 4, characterized in that, The spring pin assembly also includes an elastic element, which is sleeved around the movable pin and located inside the fixed housing. One end of the elastic element abuts against the fixed housing, and the other end abuts against the adjusting rod. The adjusting rod, under the rebound action of the elastic element, drives the movable pin to move into the positioning groove. When the adjusting rod compresses the elastic element, the movable pin moves away from the positioning groove along with the adjusting rod.

6. The lead screw guide rail locking device according to claim 4, characterized in that, The movable pin includes a first segment and a second segment connected to each other. The first segment is disposed near the positioning groove, and the second segment includes a plane. The adjustment through hole is located in the first segment, and the through direction of the adjustment through hole is perpendicular to the plane.

7. The lead screw guide rail locking device according to claim 1, characterized in that, The positioning groove is provided in multiple ways, and the multiple positioning grooves are arranged in a ring with the free end of the lead screw as the center.

8. The lead screw guide rail locking device according to claim 4, characterized in that, The spring pin assembly also includes an adjustment handle, which is connected to the end of the adjustment rod located outside the fixed housing.

9. The lead screw guide rail locking device according to claim 4, characterized in that, The top of the lead screw support has a limiting protrusion, and the bottom of the fixed housing has a limiting groove. The limiting groove is adapted to the limiting protrusion, and the limiting protrusion is located within the limiting groove.

10. A mobile system, characterized in that, Includes a lead screw guide rail locking device, a lead screw guide rail, a moving platform, and a support rail as described in any one of claims 1-9, wherein the lead screw guide rail includes a lead screw and a lead screw support seat that are rotatably connected, the moving platform is threadedly connected to the lead screw, the moving platform is slidably connected to the support rail, and the support rail is arranged parallel to the lead screw; When the lead screw rotates, the moving platform moves relative to the lead screw and slides within the support rail. The guide rail locking device is connected to the lead screw guide rail to lock or unlock the lead screw.

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