High-precision synchronous lifting positioning device

Abstract

The utility model discloses a high accuracy synchronous lifting positioning device, including the bottom plate, the middle part of bottom plate top is provided with adjusting assembly, adjusting assembly is connected with first sliding frame, second sliding frame, first sliding frame, second sliding frame slope both ends are fixedly connected with two first sliding rail, first sliding rail inside is provided with first sliding assembly, first sliding assembly is connected with lifting platform, bottom plate top both ends are fixedly connected with two second sliding rail, second sliding rail inside is provided with second sliding assembly. The utility model avoided the synchronous error of traditional device because of hydraulic pressure or flexible connection, guaranteed that lifting platform always kept horizontal in the lifting process, and stable operation, and ball screw drive precision was high, and the friction was little, and there was no reverse clearance, can accurately convert rotary motion into linear motion, and ball slide rail ensured that each sliding component moved smoothly, and the guidance was accurate.

Description

Technical Field

[0001] This utility model relates to the field of positioning device technology, specifically a high-precision synchronous lifting and lowering positioning device. Background Technology

[0002] In modern industrial manufacturing and scientific research, it is often necessary to vertically lift and precisely position heavy or high-precision workpieces and equipment. Traditional lifting devices, such as hydraulic lifting platforms, scissor lift platforms, or lifting platforms driven by a single motor through mechanical linkages (such as chains or linkages), are commonly used.

[0003] Due to the compressibility of hydraulic fluid and the difference in pipeline resistance, hydraulic systems are difficult to achieve synchronous lifting at multiple points, which can easily lead to platform tilting. Scissor or linkage structures have multiple hinge points, and after long-term use, accumulated errors can cause asynchronous lifting and platform shaking. Impacts can easily occur when the hydraulic system starts and stops, affecting high-precision operations. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision synchronous lifting and positioning device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision synchronous lifting and positioning device, comprising a base plate, an adjustment component disposed in the middle of the top surface of the base plate, the adjustment component being connected to a first sliding frame and a second sliding frame, two first slide rails being fixedly connected to the front and rear ends of the inclined front of the first sliding frame and the second sliding frame, a first sliding component being disposed inside the first slide rail, the first sliding component being connected to a lifting platform, and two second slide rails being fixedly connected to the front and rear ends of the top front of the base plate, a second sliding component being disposed inside the second slide rail.

[0006] Preferably, the adjusting assembly includes a geared motor, a lead screw, a fixed plate, and multiple ball screw nuts. The geared motor is fixedly connected to the right end of the top surface of the base plate. The lead screw has bidirectional threads with opposite directions of rotation. One end of the lead screw is fixedly connected to the output shaft of the geared motor, and the other end of the lead screw is rotatably connected to the upper end of the fixed plate. The fixed plate is fixedly connected to the left end of the top surface of the base plate. The multiple ball screw nuts are symmetrically distributed and threadedly connected to both ends of the lead screw. The first sliding frame and the second sliding frame are symmetrically distributed and fixedly connected to the top surface of the multiple ball screw nuts.

[0007] Preferably, the first sliding component includes a first slider, two first grooves, and two first balls. The top end of the first slider is fixedly connected to the corner of the bottom surface of the lifting platform, and the bottom end of the first slider is slidably disposed inside the first slide rail. Two first grooves are formed on the bottom surface of the first slider, and the first balls are embedded inside the first grooves.

[0008] Preferably, the second sliding component includes a plurality of second sliders, a plurality of second grooves, and a plurality of second balls. The top ends of the plurality of second sliders are fixedly connected to the bottom surfaces of the first sliding frame and the second sliding frame. The bottom ends of the plurality of second sliders are symmetrically distributed and slidably disposed inside the second slide rail. The bottom surface of the second slider is provided with a second groove, and the second balls are embedded in the inner side of the second groove.

[0009] Preferably, both the first sliding frame and the second sliding frame have multiple reinforcing rods fixedly connected to their inner sidewalls.

[0010] Preferably, a displacement sensor is fixedly connected to the bottom surface of the lifting platform, and a control box is fixedly connected to the corner of the top surface of the base plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention features an adjustment assembly consisting of a lead screw with bidirectional opposite threads and a ball screw nut. By driving the lead screw to rotate with a single motor, the symmetrically arranged first and second sliding frames can move synchronously towards or away from each other. This avoids the synchronization errors caused by hydraulic or flexible connections in traditional devices, ensuring that the lifting platform remains level and operates stably during lifting. The ball screw transmission has high precision, low friction, and no backlash, accurately converting rotational motion into linear motion; the ball slide rails ensure smooth movement and precise guidance of each sliding component. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front structural diagram of the present invention; Figure 3 This is a schematic diagram of the adjustment component structure of this utility model; Figure 4 This is a schematic diagram of the first sliding component structure of this utility model; Figure 5 This is a schematic diagram of the second sliding component of this utility model.

[0013] In the diagram: 1. Base plate; 2. Adjustment assembly; 21. Gear motor; 22. Lead screw; 23. Fixing plate; 24. Ball screw nut; 3. First sliding frame; 4. Second sliding frame; 5. First slide rail; 6. First sliding assembly; 61. First slider; 62. First groove; 63. First ball; 7. Lifting platform; 8. Second slide rail; 9. Second sliding assembly; 91. Second slider; 92. Second groove; 93. Second ball; 10. Reinforcing rod; 11. Displacement sensor; 12. Control box. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-5 This utility model provides a technical solution: a high-precision synchronous lifting and positioning device, including a base plate 1, an adjustment component 2 installed in the middle of the top surface of the base plate 1, and two first slide rails 5 bolted to the front and rear ends of the inclined front of the first sliding frame 3 and the second sliding frame 4. The first sliding frame 3 can be inserted into the second sliding frame. The first sliding component 6 is installed inside the first slide rail 5. Two second slide rails 8 are bolted to the front and rear ends of the top surface of the base plate 1, and the second sliding component 9 is installed inside the second slide rail 8.

[0016] The adjusting assembly 2 includes a geared motor 21, a lead screw 22, a fixed plate 23, and multiple ball screw nuts 24. The geared motor 21 is a worm gear geared motor, which is bolted to the right end of the top surface of the base plate 1. The lead screw 22 has bidirectional threads with opposite directions. One end of the lead screw 22 is mounted on the output shaft of the geared motor 21 via a coupling, and the other end of the lead screw 22 is rotatably connected to the upper end of the fixed plate 23 via a bearing. The fixed plate 23 is bolted to the left end of the top surface of the base plate 1. Multiple ball screw nuts 24 are symmetrically distributed and threaded to both ends of the lead screw 22. The first sliding frame 3 and the second sliding frame 4 are symmetrically distributed and bolted to the top surface of the multiple ball screw nuts 24.

[0017] The first sliding component 6 includes a first slider 61, two first grooves 62, and two first balls 63. The top of the first slider 61 is bolted to the corner of the bottom surface of the lifting platform 7. The bottom of the first slider 61 is slidably mounted on the inner side of the first slide rail 5. Two first grooves 62 are formed on the bottom surface of the first slider 61. The first balls 63 are embedded in the inner side of the first grooves 62. A first groove is formed in the middle of the inner surface of the first slide rail 5. The first balls 63 abut against the first groove.

[0018] The second sliding assembly 9 includes multiple second sliders 91, multiple second grooves 92, and multiple second balls 93. The top ends of the multiple second sliders 91 are bolted to the bottom surfaces of the first sliding frame 3 and the second sliding frame 4. The bottom ends of the multiple second sliders 91 are symmetrically distributed and slidably installed inside the second slide rail 8. The bottom surface of the second slider 91 has a second groove 92, and the second balls 93 are embedded inside the second groove 92. The middle of the inner surface of the second slide rail 8 has a second groove, and the second balls 93 abut against the second groove.

[0019] The inner walls of both the first sliding frame 3 and the second sliding frame 4 are fitted with multiple reinforcing rods 10 by bolts.

[0020] The displacement sensor 11 is bolted to the bottom of the lifting platform 7, and the control box 12 is bolted to the corner of the top surface of the base plate 1. The control box 12 integrates switches and programmable controllers that are used in conjunction with various electronic devices, and is electrically connected to each electronic device through wires. The entire device is powered by an external power supply. Each switch can be operated to control the opening and closing of each electronic device. The above-mentioned electronic devices are all existing technologies, and their specific structures, working principles and electrical connections are not described in detail here.

[0021] Working principle: When the device is in use, if it is necessary to raise the lifting platform 7, the reduction motor 21 rotates forward, driving the lead screw 22 to rotate, causing the two ball screw nuts 24 to move towards each other. The first sliding frame 3 and the second sliding frame 4, which are fixed on the ball screw nuts 24, also slide towards each other. These two sliding frames are guided by the second sliding component 9 in the second slide rail 8 on the base plate 1 to ensure that their movement trajectory is a horizontal straight line. As the first sliding frame 3 and the second sliding frame 4 approach each other, the first slide rail 5 pushes the first slider 61 connected to the bottom of the lifting platform 7 to slide upward, thereby converting the horizontal synchronous translational motion into the vertical upward motion of the lifting platform 7. When it is necessary to lower the lifting platform 7, the reduction motor 21 reverses, driving the lead screw 22 to rotate in the opposite direction, causing the two ball screw nuts 24 to separate at both ends. The first sliding frame 3 and the second sliding frame 4 slide separately. Under the action of the weight of the lifting platform 7 itself, the first slider 61 slides downward along the first slide rail 5, thereby realizing the smooth descent of the lifting platform 7. The second ball bearing 93 rolls inside the second groove 92 and the second slide groove. The first slide rail 5 pushes the first slider 61 to slide inside the first slide rail 5. The first ball bearing 63 rolls inside the first groove 62 and the first slide groove, and the second ball bearing 93 rolls inside the second groove 92 and the second slide groove, ensuring that the sliding parts move smoothly and guide accurately. During the entire lifting process, the displacement sensor 11 installed at the bottom of the lifting platform 7 monitors the height of the platform in real time and feeds back the position signal to the control box 12. The programmable controller in the control box 12 compares the real-time position with the target position. By precisely controlling the speed and start and stop of the reduction motor 21, the lifting platform 7 can achieve higher precision stopping and positioning at any specified height. This utility model has the advantages of being easy to use and having good performance.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision synchronous lifting and positioning device, comprising a base plate (1), characterized in that: An adjustment component (2) is provided in the middle of the top surface of the base plate (1). The adjustment component (2) is connected to a first sliding frame (3) and a second sliding frame (4). Two first slide rails (5) are fixedly connected to the front and rear ends of the first sliding frame (3) and the second sliding frame (4). A first sliding component (6) is provided inside the first slide rail (5). A lifting platform (7) is connected to the first sliding component (6). Two second slide rails (8) are fixedly connected to the front and rear ends of the top surface of the base plate (1). A second sliding component (9) is provided inside the second slide rail (8).

2. The high-precision synchronous lifting and positioning device according to claim 1, characterized in that: The adjustment assembly (2) includes a geared motor (21), a lead screw (22), a fixed plate (23), and multiple ball screw nuts (24). The geared motor (21) is fixedly connected to the right end of the top surface of the base plate (1). The lead screw (22) has bidirectional threads with opposite directions. One end of the lead screw (22) is fixedly connected to the output shaft of the geared motor (21), and the other end of the lead screw (22) is rotatably connected to the upper end of the fixed plate (23). The fixed plate (23) is fixedly connected to the left end of the top surface of the base plate (1). Multiple ball screw nuts (24) are symmetrically distributed and threadedly connected to both ends of the lead screw (22). The first sliding frame (3) and the second sliding frame (4) are symmetrically distributed and fixedly connected to the top surface of the multiple ball screw nuts (24).

3. The high-precision synchronous lifting and positioning device according to claim 1, characterized in that: The first sliding component (6) includes a first slider (61), two first grooves (62), and two first balls (63). The top of the first slider (61) is fixedly connected to the corner of the bottom surface of the lifting platform (7). The bottom of the first slider (61) is slidably disposed inside the first slide rail (5). The bottom surface of the first slider (61) has two first grooves (62), and the first balls (63) are embedded inside the first grooves (62).

4. The high-precision synchronous lifting and positioning device according to claim 1, characterized in that: The second sliding component (9) includes multiple second sliders (91), multiple second grooves (92), and multiple second balls (93). The top ends of the multiple second sliders (91) are fixedly connected to the bottom surfaces of the first sliding frame (3) and the second sliding frame (4). The bottom ends of the multiple second sliders (91) are symmetrically distributed and slidably disposed inside the second slide rail (8). The bottom surface of the second sliders (91) is provided with a second groove (92), and the second balls (93) are embedded inside the second groove (92).

5. The high-precision synchronous lifting and positioning device according to claim 1, characterized in that: Multiple reinforcing rods (10) are fixedly connected to the inner sidewalls of the first sliding frame (3) and the second sliding frame (4).

6. The high-precision synchronous lifting and positioning device according to claim 1, characterized in that: A displacement sensor (11) is fixedly connected to the bottom surface of the lifting platform (7), and a control box (12) is fixedly connected to the corner of the top surface of the base plate (1).

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