Distance adjusting device
By designing a pitch adjustment device to achieve synchronous adjustment of the spacing between multiple pitch-changing components, the problem of low efficiency in manual operation is solved, the efficiency of automated production and equipment adaptability are improved, and costs and safety risks are reduced.
Patent Information
- Application Number
- CN202422979277.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-03
AI Technical Summary
In the existing technology, materials are manually taken from the loading tray to the working position, and after the process operation is completed, the materials or products are placed on the unloading tray. This results in low production efficiency, and the size and specifications of the trays or carriers of different automated equipment affect equipment compatibility.
Design a pitch adjustment device, including a base, a drive assembly and multiple pitch-changing assemblies. By pushing and pulling the movable pitch-changing assemblies along a straight line with the drive assembly, the pitch of the multiple pitch-changing assemblies can be adjusted synchronously to adapt to the pitch requirements of the upper and lower material trays.
It improves production efficiency, reduces the need for manual operation, lowers labor costs and safety risks, and enhances the adaptability of equipment and production line speed.
Smart Images
Figure CN223509136U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of automated production equipment, and more specifically, to a distance adjustment device. Background Technology
[0002] With the rapid development of the 3C industry, the number of automated equipment is increasing day by day. Different automated equipment cannot be integrated in one step. During the switching and connection process, there are often deviations in the size and specifications of the trays or carriers, which affect the introduction of automation. Therefore, it is necessary to quickly organize the product layout specifications to achieve equipment compatibility.
[0003] In the existing technology, materials are manually taken from the loading tray to the working position, and after the process operation is completed, the materials or products are placed on the unloading tray, which results in very low production efficiency. Utility Model Content
[0004] The purpose of this utility model is to provide an adjustable distance device to solve the technical problem of very low production efficiency caused by manually taking materials from the loading tray to the working position, completing the process operation, and then placing the materials or products on the unloading tray.
[0005] The pitch adjustment device provided by this utility model includes a base, a drive assembly, and multiple pitch-changing assemblies. The drive assembly is fixedly installed on the base, and the multiple pitch-changing assemblies are arranged sequentially along a straight line. Each pitch-changing assembly is hinged to a connecting rod, with the side closer to the drive assembly as the front and the side farther from the drive assembly as the rear. The first end of the foremost connecting rod is hinged to the foremost pitch-changing assembly. The first end of each of the middle connecting rods is hinged to the second end of the connecting rod adjacent to it in front, and the second end of each connecting rod is hinged to the first end of the connecting rod adjacent to it behind. The second end of the rearmost connecting rod is hinged to the rearmost pitch-changing assembly. The connecting rods are parallel to the hinge axis of the corresponding pitch-changing assembly and the hinge axis of the adjacent connecting rod, and their extension direction is perpendicular to the straight line. Among the multiple pitch-changing assemblies, one of the pitch-changing assemblies is fixedly connected to the base and is a fixed pitch-changing assembly, while the remaining pitch-changing assemblies are movable pitch-changing assemblies. The drive assembly is configured to push and pull one of the movable pitch-changing assemblies along the straight line.
[0006] Furthermore, the hinge positions of each pitch-changing component and the corresponding connecting rod are consistent; the distances between each connecting rod and the hinge axis of the corresponding pitch-changing component and between each connecting rod and the hinge axis of the adjacent connecting rod in front are consistent, as are the distances between each connecting rod and the hinge axis of the corresponding pitch-changing component and between each connecting rod and the hinge axis of the adjacent connecting rod behind.
[0007] Furthermore, the drive assembly includes a rotary motor and a ball screw, the output shaft of the rotary motor and the lead screw of the ball screw are coaxially connected and both extend along the straight line direction, and the nut of the ball screw is fixedly connected to the foremost pitch-changing assembly.
[0008] Furthermore, the lead screw and the output shaft of the rotary motor are connected by a coupling.
[0009] Furthermore, the base includes a base plate and a first support plate and a second support plate fixedly spaced along the straight line on the base plate. The two ends of the lead screw are rotatably supported on the first support plate and the second support plate, respectively, and the end of the lead screw near the rotary motor passes through the first support plate and is connected to the output shaft of the rotary motor. The pitch-changing components are all located between the first support plate and the second support plate, and the rearmost pitch-changing component is fixedly connected to the second support plate.
[0010] Furthermore, each of the pitch-changing components is provided with clearance holes, and the lead screw passes through each of the clearance holes.
[0011] Furthermore, the pitch adjustment device also includes at least one guide rod parallel to the lead screw, and each pitch-changing component is provided with a guide hole. The guide rod passes through each guide hole and is slidably connected to each pitch-changing component, and its two ends are respectively connected to the first support plate and the second support plate; or, the base is provided with a guide rail or a slide groove, and the pitch-changing component is provided with a slider, and the slider is slidably connected to the guide rail or the slide groove.
[0012] Furthermore, the connecting rod is disposed below the pitch conversion assembly, and there is a safety gap between the connecting rod and the base plate; or, the connecting rod is disposed to the side of the pitch conversion assembly.
[0013] Further, the drive assembly includes a linear motor, the output shaft of which extends along the linear direction and is fixedly connected to one of the pitch-changing components; or, the drive assembly includes a hydraulic cylinder, the piston rod of which extends along the linear direction and is fixedly connected to one of the pitch-changing components; or, the drive assembly includes a cylinder, the cylinder rod of which extends along the linear direction and is fixedly connected to one of the pitch-changing components.
[0014] Furthermore, the pitch-changing assembly includes a sliding seat and a tray disposed on the sliding seat, the connecting rod is hinged to the sliding seat, the driving assembly is connected to the sliding seat of the movable pitch-changing assembly, and the sliding seat of the fixed pitch-changing assembly is fixedly connected to the base.
[0015] The distance adjustment device provided by this utility model can produce the following beneficial effects:
[0016] The distance adjustment device provided by this utility model comprises multiple distance-changing components arranged in a straight line, each hinged to a connecting rod. The connecting rods of adjacent distance-changing components are hinged together. By fixing one of the distance-changing components (i.e., fixing the fixed distance-changing component), the drive component moves one of the remaining movable distance-changing components in a straight line. The distance between adjacent distance-changing components can be changed simultaneously through the connecting rods between the components. Specifically, when the distance-changing components include a tray or fixture for carrying materials or products, the distance adjustment device can adjust the distance between the distance-changing components to match the distance of the upper tray, allowing robots to simultaneously pick up multiple materials from the upper tray. Similarly, after the process on the fixture is completed, the distance adjustment device can also adjust the distance between the distance-changing components to match the distance of the lower tray, allowing robots to simultaneously transfer multiple materials or products from the tray or fixture of the distance-changing components to the lower tray.
[0017] Compared to adjusting the distance between adjacent pitch components one by one, the pitch adjustment device provided in this embodiment combines the actions, enabling multiple working positions, i.e., multiple pitch components, to operate synchronously. Efficiency is increased exponentially based on the number of working positions, significantly improving the adjustment efficiency of the distance between pitch components, thereby greatly increasing production efficiency. Furthermore, automated operation reduces the need for manual operation, lowering labor costs. In addition, reduced human intervention also lowers safety risks during production, resulting in higher safety. Compared to each pitch component being driven by a separate drive component, the pitch adjustment device provided in this embodiment uses a single drive component to synchronously adjust the distance between multiple pitch components, significantly reducing costs and saving space. The distance between the pitch components can be adjusted to the desired distance by controlling the stroke of the drive component, demonstrating strong adaptability. Attached Figure Description
[0018] 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0019] Figure 1 One of the three-dimensional structural schematic diagrams of the pitch adjustment device provided in the embodiment of this utility model, wherein the pitch adjustment components are in an assembled state;
[0020] Figure 2 The second three-dimensional structural schematic diagram of the pitch adjustment device provided in the embodiment of this utility model shows that the pitch adjustment components are in a dispersed state.
[0021] Figure 3This is a partial structural diagram of the pitch adjustment device provided in an embodiment of the present invention, wherein the pitch adjustment components are in a dispersed state.
[0022] Explanation of reference numerals in the attached figures:
[0023] 100 - Base; 110 - Base plate; 120 - First support plate; 130 - Second support plate; 140 - Mounting plate; 150 - Guide rod;
[0024] 200 - Drive assembly; 210 - Rotary motor; 211 - Output shaft; 220 - Ball screw; 221 - Screw; 222 - Nut; 230 - Coupling;
[0025] 300 - Pitch variable assembly; 301 - Fixed pitch variable assembly; 302 - Movable pitch variable assembly; 310 - Sliding seat; 311 - Clearance hole; 312 - Guide hole; 320 - Material tray;
[0026] 400-Connecting rod;
[0027] 510 - Positioning shaft; 520 - Connecting shaft; 530 - Snap ring; 540 - Bearing; 550 - Bushing. Detailed Implementation
[0028] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.
[0029] This embodiment provides a distance adjustment device, such as Figures 1 to 3As shown, the pitch adjustment device includes a base 100, a drive assembly 200, and multiple pitch-changing assemblies 300. The drive assembly 200 is fixedly installed on the base 100, and the multiple pitch-changing assemblies 300 are arranged sequentially along a straight line. Each pitch-changing assembly 300 is hinged to a connecting rod 400. For ease of description, in this embodiment, the side closer to the drive assembly 200 is considered the front (arrow a in the figure), and the side farther from the drive assembly 200 is considered the rear (arrow b in the figure). The first end of the foremost connecting rod 400 is hinged to the foremost pitch-changing assembly 300. The first ends of each intermediate connecting rod 400 are connected to the adjacent connecting rod 400 in front of it. The second end of the first rod is hinged to the first end of the adjacent connecting rod 400 behind it; the second end of the last connecting rod 400 is hinged to the last pitch component 300; the hinge axis of the connecting rod 400 and the corresponding pitch component 300 and the hinge axis of the adjacent connecting rod 400 are parallel to each other and the extension direction is perpendicular to the straight line direction; among the multiple pitch components 300, one pitch component 300 is fixedly connected to the base 100 and is a fixed pitch component 301, and the remaining pitch components 300 are all movable pitch components 302; the drive component 200 is configured to push and pull one of the movable pitch components 302 along the straight line direction.
[0030] The pitch adjustment device provided in this embodiment has multiple pitch-changing components 300 arranged in a straight line, each hinged to a connecting rod 400. The connecting rods 400 of adjacent pitch-changing components 300 are hinged together. By fixing one of the pitch-changing components 300, i.e., fixing the pitch-changing component 301, the drive component 200 drives one of the remaining movable pitch-changing components 302 to move in a straight line. The distance between each adjacent pitch-changing component 300 can be changed simultaneously by the connecting rods 400 between the pitch-changing components 300. When the pitch-changing component 300 includes a tray or fixture for carrying materials or products, the pitch adjustment device can adjust the distance between each pitch-changing component 300 to match the distance of the upper tray, so that robots can pick up multiple materials from the upper tray at the same time. After the process on the fixture is completed, the pitch adjustment device can also adjust the distance between each pitch-changing component 300 to match the distance of the lower tray, so that robots can transfer multiple materials or products from the tray or fixture of the pitch-changing component 300 to the lower tray at the same time.
[0031] Compared to adjusting the distance between adjacent pitch components 300 one by one, the pitch adjustment device provided in this embodiment combines the actions, enabling multiple workstations to operate synchronously. Efficiency is increased exponentially based on the number of workstations, significantly improving the adjustment efficiency of the distance between pitch components 300, thereby greatly increasing production efficiency. Furthermore, automated operation reduces the need for manual operation, lowering labor costs. In addition, reduced human intervention also lowers safety risks during production, resulting in higher safety. Compared to each pitch component 300 being driven by a separate drive component 200, the pitch adjustment device provided in this embodiment uses a single drive component to synchronously adjust the distance between multiple pitch components 300 (equivalent to adjusting the distance between multiple workstations), significantly reducing costs and saving space. The distance between the pitch components 300 can be adjusted to the desired distance by controlling the stroke of the drive component 200, demonstrating strong adaptability.
[0032] In this embodiment, as Figures 1 to 3 As shown, there are seven pitch control components 300, which means there are seven working positions. One of them is a fixed pitch control component 301, and the other six are movable pitch control components 302. Figure 1 Only two of them are schematically indicated in this paper. However, it should be noted that in other embodiments of this application, the number of pitch-changing components 300 is not limited to seven, but can be specifically set according to requirements.
[0033] In this embodiment, the pitch-changing component 300 may include a sliding seat 310 and a tray 320 disposed on the sliding seat 310. A connecting rod 400 is hinged to the sliding seat 310. The driving component 200 is connected to the sliding seat 310 of the movable pitch-changing component 302, and the sliding seat 310 of the fixed pitch-changing component 301 is fixedly connected to the base 100. With this configuration, the pitch-adjusting device provided in this embodiment can realize a turntable for batch products or materials. The general process flow is as follows:
[0034] The drive component 200 drives the adjustment of the pitch of the pitch component 300 (i.e., the working position pitch) so that the pitch of the pitch component 300 is the same as the pitch of the feeding tray containing the material.
[0035] Robot No. 1 (material handling robot) picks up seven pieces of material and places them into the respective positioning fixtures, i.e., material trays 320;
[0036] After the corresponding process on the positioning fixture is completed, the drive component 200 drives the adjustment of the pitch component 300 (i.e., the working position pitch) again so that the pitch of the pitch component 300 is the same as the pitch of the unloading tray.
[0037] The second robot (feeding robot) takes out seven pieces of material from the positioning fixture and places them in the unloading tray, thus completing the turntable of the seven pieces of material.
[0038] Repeat the above four steps until all the required materials are on the turntable.
[0039] Specifically, such as Figure 3 As shown, in this embodiment, the hinge positions of each pitch-changing component 300 and its corresponding connecting rod 400 are consistent. The distance L1 between each connecting rod 400 and the hinge axis of the corresponding pitch-changing component 300, and between each connecting rod 400 and its adjacent front connecting rod 400, are also consistent. Furthermore, in this embodiment, the bottom center position of the pitch-changing component 300 is hinged to the center position of the corresponding connecting rod 400, where L1 = L2. With this configuration, the pitch-adjusting device provided in this embodiment can achieve equidistant adjustment between each pitch-changing component 300, meaning the distance between adjacent pitch-changing components 300 is consistent. By changing the length of the connecting rod 400, the distance adjustment range between adjacent pitch-changing components 300 can be adjusted to meet different usage scenarios.
[0040] In this embodiment, as Figure 1 and Figure 2 As shown, the drive assembly 200 includes a rotary motor 210 and a ball screw 220. The output shaft 211 of the rotary motor 210 and the lead screw 221 of the ball screw 220 are coaxially connected and both extend in a straight line. The nut 222 of the ball screw 220 is fixedly connected to the foremost pitch-changing assembly 300. In this configuration, the rotary motor 210 drives the lead screw 221 of the ball screw 220 to rotate through its output shaft 211. This causes the nut 222 of the ball screw 220 to pull or push the foremost pitch-changing assembly 300, thereby causing the linkage mechanism composed of the connecting rods 400 to extend or retract, driving each movable pitch-changing assembly 302 to move, ultimately increasing or decreasing the distance between each pitch-changing assembly 300.
[0041] Specifically, in this embodiment, the rotary motor 210 is a servo motor, which is fixedly installed on the mounting plate 140 of the base 100. Through the mounting plate 140, the height of the output shaft 211 of the rotary motor 210 can be adjusted to be consistent with the height of the lead screw 221.
[0042] Specifically, such as Figure 3 As shown, in this embodiment, the hinge axis between each connecting rod 400 and the strain gauge assembly 300 is the positioning axis 510, that is, the positioning axis 510 serves both as a positioning axis and as a hinge axis; adjacent connecting rods 400 are hinged together by connecting shafts 520, that is, the connecting shaft 520 is the hinge axis between adjacent connecting rods 400; in order to prevent the connecting rod 400 from coming off the end of the connecting shaft 520, in this embodiment, a retaining ring 530 is also provided at the end of the connecting shaft 520 to limit the connecting rod 400.
[0043] It should be noted that in other embodiments of this application, the drive assembly 200 is not limited to the rotary motor 210 and the ball screw 220, but can also have other structural forms. For example, the drive assembly 200 can also include a linear motor, the output shaft of which extends in a linear direction and is fixedly connected to a pitch-changing assembly 300, thereby pulling or pushing the pitch-changing assembly 300; or, the drive assembly 200 includes a hydraulic cylinder, the piston rod of which extends in a linear direction and is fixedly connected to a pitch-changing assembly 300; or, the drive assembly 200 includes a cylinder, the cylinder rod of which extends in a linear direction and is fixedly connected to a pitch-changing assembly 300. That is, as long as the pitch-adjusting device provided in this application can drive the pitch-changing assembly 300 to disperse or gather along the arrangement direction of the pitch-changing assembly 300, or in other words, can make the linkage mechanism formed by the connecting rod 400 extend or retract, the specific structural form of the drive assembly 200 is not limited in this application.
[0044] Specifically, such as Figures 1 to 3 As shown, in this embodiment, the lead screw 221 and the output shaft 211 of the rotary motor 210 are connected by a coupling 230. In this configuration, the coupling 230 serves to transmit power, compensate for axial errors, change speed and torque, and isolate vibration between the output shaft 211 of the rotary motor 210 and the lead screw 221.
[0045] In this embodiment, as Figure 1 and Figure 2 As shown, the base 100 includes a base plate 110 and a first support plate 120 and a second support plate 130 fixedly disposed on the base plate 110 at intervals along a straight direction. The two ends of the lead screw 221 are rotatably supported on the first support plate 120 and the second support plate 130, respectively. The end of the lead screw 221 near the rotary motor 210 passes through the first support plate 120 and is connected to the output shaft 211 of the rotary motor 210. All pitch-changing components 300 are located between the first support plate 120 and the second support plate 130. The rearmost pitch-changing component 300 is fixedly connected to the second support plate 130, i.e., the rearmost pitch-changing component 300 is a fixed pitch-changing component 301. The lead screw 221 can be mounted on the second support plate 130 via a bearing 540.
[0046] Specifically, such as Figure 2 As shown, in this embodiment, each pitch-changing component 300 is provided with a clearance hole 311, through which the lead screw 221 passes. This arrangement allows the pitch-changing component 300 to effectively avoid the lead screw 221, making the overall structure of the device more compact and space-saving. Of course, in other embodiments of this application, the pitch-changing component 300 can also be located on one side of the lead screw 221, thus eliminating the need for clearance holes 311.
[0047] Specifically, in this embodiment, the maximum length of the linkage mechanism formed by the connecting rod 400 when it is extended is greater than the maximum length occupied by the pitch-changing component 300 when it is dispersed, and the minimum length of the linkage mechanism when it is contracted is less than the minimum length occupied by the pitch-changing component 300 when it is assembled. With this setting, even if there is an operational error during the pitch adjustment process, because the force-bearing components are the sliding seat 310 and the lead screw 221 of the pitch-changing component 300, the connecting rod 400 of the linkage mechanism will not be subjected to extreme tension or extreme compression, so the linkage mechanism will not be damaged.
[0048] Specifically, in this embodiment, as Figures 1 to 3 As shown, the pitch adjustment device also includes two guide rods 150 parallel to the lead screw 221. Each pitch-changing assembly 300 is provided with a guide hole 312. The guide rods 150 pass through each guide hole 312 and are slidably connected to each pitch-changing assembly 300, with their two ends connected to the first support plate 120 and the second support plate 130, respectively. In this configuration, the guide rods 150 guide the pitch-changing assemblies 300, ensuring they can be distributed or converged strictly along a straight line. Furthermore, bushings 550, such as copper bushings, can be provided between the guide rods 150 and each guide hole 312 to effectively reduce wear.
[0049] More specifically, such as Figure 1 As shown, in this embodiment, two guide rods 150 are symmetrically arranged on both sides of the lead screw 221. The two guide rods 150 exert a guiding effect on the pitch conversion assembly 300, making the movement of the pitch conversion assembly 300 smoother and less prone to skewing or jamming. Of course, in other embodiments of this application, the number of guide rods 150 is not limited to two, but can also be one or four, etc.
[0050] It should also be noted that, in addition to the guide rod 150 and the guide hole 312, the guide structure can also be in other forms in other embodiments of this application. For example, the base 100 is provided with a guide rail or a slide groove, and the pitch component 300 is provided with a slider. The slider is slidably connected to the guide rail or slide groove, which can also guide the pitch component 300.
[0051] In this embodiment, as Figure 3As shown, the connecting rod 400 is positioned below the pitch-changing assembly 300, and there is a safety gap between the connecting rod 400 and the base plate 110. This design allows the connecting rod 400 to be concealed, placed below the working position, effectively preventing interference from other structures, ensuring safety and saving space. The two guide rods 150, in addition to guiding the pitch-changing assembly 300, also support the pitch-changing assembly 300 and its lower connecting rod 400. When the movable pitch-changing assembly 302 moves under the influence of the nut 222 or the connecting rod 400, it only needs to overcome the friction between the movable pitch-changing assembly 302 and the guide rods 150. Compared to the movable pitch-changing assembly 302 sliding against the surface of the base plate 110, this embodiment is obviously more labor-saving, thus conserving energy.
[0052] Of course, in other embodiments of this application, the location of the connecting rod 400 is not limited to below the pitch component 300. For example, the connecting rod 400 may also be located on the side of the pitch component 300.
[0053] In addition to the above-mentioned structure, the pitch adjustment device also includes a control system, which controls the pitch adjustment assembly 300 or the distance between working positions by controlling the stroke of the drive assembly.
[0054] In summary, this embodiment provides a distance adjustment device suitable for applications such as equidistant transformation or equidistant adjustment of workstations in the 3C industry. It can quickly and accurately adjust the relative position of products or diameter mechanisms (such as material pick-up nozzles, visual inspection, and screw fastening), thereby enabling the switching of products of different specifications, i.e., good equipment compatibility; it can greatly improve the speed of the production line, shorten the production cycle, and thus improve the overall production efficiency; moreover, it is low in cost and high in safety.
[0055] Finally, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A distance adjustment device, characterized in that, It includes a base (100), a drive assembly (200) and a plurality of pitch control assemblies (300), wherein the drive assembly (200) is fixedly installed on the base (100) and the plurality of pitch control assemblies (300) are arranged sequentially along a straight line; Each of the pitch-changing components (300) is hinged to a connecting rod (400), with the side closer to the drive component (200) as the front and the side farther from the drive component (200) as the rear. The first end of the foremost connecting rod (400) is hinged to the foremost pitch-changing component (300); the first end of each of the middle connecting rods (400) is hinged to the second end of the connecting rod (400) adjacent to it in front, and the second end of each connecting rod (400) is hinged to the first end of the connecting rod (400) adjacent to it behind; the second end of the rearmost connecting rod (400) is hinged to the rearmost pitch-changing component (300); the connecting rod (400) is parallel to the hinge axis of the corresponding pitch-changing component (300) and the hinge axis of the adjacent connecting rod (400), and the extension direction is perpendicular to the straight line direction. Of the plurality of pitch-changing components (300), one of the pitch-changing components (300) is fixedly connected to the base (100) and is a fixed pitch-changing component (301), while the remaining pitch-changing components (300) are all movable pitch-changing components (302); the drive component (200) is configured to push and pull one of the movable pitch-changing components (302) along the straight line direction.
2. The adjusting device according to claim 1, characterized in that, The hinge positions of each pitch-changing component (300) and the corresponding connecting rod (400) are consistent; the distances between each connecting rod (400) and the hinge axis of the corresponding pitch-changing component (300) and between each connecting rod (400) and the hinge axis of the adjacent connecting rod (400) in front are consistent; the distances between each connecting rod (400) and the hinge axis of the corresponding pitch-changing component (300) and between each connecting rod (400) and the hinge axis of the adjacent connecting rod (400) behind are also consistent.
3. The adjusting device according to claim 1 or 2, characterized in that, The drive assembly (200) includes a rotary motor (210) and a ball screw (220). The output shaft (211) of the rotary motor (210) and the screw (221) of the ball screw (220) are coaxially connected and both extend along the straight line. The nut (222) of the ball screw (220) is fixedly connected to the foremost pitch-changing assembly (300).
4. The adjusting device according to claim 3, characterized in that, The lead screw (221) and the output shaft (211) of the rotary motor (210) are connected by a coupling (230).
5. The adjusting device according to claim 3, characterized in that, The base (100) includes a base plate (110) and a first support plate (120) and a second support plate (130) fixedly spaced along the straight line on the base plate (110). The two ends of the lead screw (221) are rotatably supported on the first support plate (120) and the second support plate (130) respectively. The end of the lead screw (221) near the rotary motor (210) passes through the first support plate (120) and is connected to the output shaft (211) of the rotary motor (210). The pitch-changing components (300) are all located between the first support plate (120) and the second support plate (130), with the rearmost pitch-changing component (300) fixedly connected to the second support plate (130).
6. The adjusting device according to claim 5, characterized in that, Each of the pitch-changing components (300) is provided with a clearance hole (311), and the lead screw (221) passes through each of the clearance holes (311).
7. The adjusting device according to claim 6, characterized in that, The pitch adjustment device further includes at least one guide rod (150) parallel to the lead screw (221). Each pitch-changing component (300) is provided with a guide hole (312). The guide rod (150) passes through each guide hole (312) and is slidably connected to each pitch-changing component (300). Both ends are respectively connected to the first support plate (120) and the second support plate (130). Alternatively, the base (100) may be provided with a guide rail or a slide groove, and the pitch-changing assembly (300) may be provided with a slider, which may be slidably connected to the guide rail or the slide groove.
8. The adjusting device according to claim 7, characterized in that, The connecting rod (400) is disposed below the pitch assembly (300), and there is a safety gap between the connecting rod (400) and the base plate (110); Alternatively, the connecting rod (400) may be disposed on the side of the pitch assembly (300).
9. The adjusting device according to claim 1 or 2, characterized in that, The drive assembly (200) includes a linear motor, the output shaft of which extends along the linear direction and is fixedly connected to one of the pitch components (300); Alternatively, the drive assembly (200) may include a hydraulic cylinder, the piston rod of which extends along the linear direction and is fixedly connected to one of the pitch components (300); Alternatively, the drive assembly (200) may include a cylinder, the cylinder rod of which extends along the linear direction and is fixedly connected to one of the pitch components (300).
10. The adjusting device according to claim 1 or 2, characterized in that, The pitch-changing assembly (300) includes a sliding seat (310) and a tray (320) disposed on the sliding seat (310). The connecting rod (400) is hinged to the sliding seat (310). The driving assembly (200) is connected to the sliding seat (310) of the movable pitch-changing assembly (302). The sliding seat (310) of the fixed pitch-changing assembly (301) is fixedly connected to the base (100).