A speed-up transmission mechanism

Abstract

This utility model discloses a speed-multiplying transmission mechanism, comprising: a first mounting frame; a first pulley assembly having at least one moving section that moves parallel to the first mounting frame; a first slider slidably connected to the first mounting frame and fixedly connected to the moving section; a second mounting frame fixed to the first slider; a second slider slidably connected to the second mounting frame; and a linkage structure including a first four-bar linkage and a second four-bar linkage, wherein two links of the first four-bar linkage and two links of the second four-bar linkage constitute a third four-bar linkage. This utility model achieves long-distance movement of the second slider by using the first pulley assembly in conjunction with multiple sets of four-bar linkages, resulting in a simple structure and low energy consumption.

Description

Technical Field

[0001] This utility model relates to a high-speed transmission mechanism. Background Technology

[0002] Most existing speed-multiplying transmission mechanisms use complex pulley assemblies to achieve the sliding of multi-stage mounting frames, thereby realizing the change in length between mounting frames. However, existing pulley assemblies need to be wound around multiple mounting frames, resulting in a long belt length, a complicated winding method, greater friction on the belt, and higher energy consumption. Summary of the Invention

[0003] The purpose of this invention is to provide a speed-multiplying transmission mechanism, in which a single set of pulleys can enable the movement of a two-stage mounting frame, with a long end stroke and a simple structure.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a high-speed transmission mechanism, comprising:

[0005] First mounting bracket;

[0006] The first pulley assembly has at least one movable section that moves parallel to the first mounting bracket;

[0007] The first slider is slidably connected to the first mounting bracket and fixedly connected to the moving segment;

[0008] The second mounting bracket is fixed to the first slider;

[0009] The second slider is slidably connected to the second mounting bracket;

[0010] The linkage structure includes a first four-bar linkage and a second four-bar linkage. Two links of the first four-bar linkage and two links of the second four-bar linkage form a third four-bar linkage. The third four-bar linkage and the first four-bar linkage share a pivot fixed to the first slider; this pivot is the first pivot. The second four-bar linkage and the first four-bar linkage share a pivot fixed to the second slider; this pivot is the second pivot. The first slider and the second slider have two extreme positions: when the first slider is located at the left end of the first mounting bracket, and the second slider is located at the right end of the second mounting bracket... When the first slider is at the left end of the first mounting frame, the second mounting frame is at the leftmost end of the first mounting frame. When the motor rotates and drives the pulley assembly to rotate, the moving section moves from the left end of the first mounting frame to the right end of the first mounting frame. At this time, the second mounting frame moves with the first slider to the right end of the first mounting frame, and the connecting rod structure starts to retract from the extended state to the shortest state. When the second slider moves to the right and passes the first slider, the connecting rod structure starts to extend to the right from the shortest state until it is stretched to the longest state. At this time, when the first slider is at the right end of the first mounting frame and the second slider is at the right end of the second mounting frame, the second mounting frame is at the rightmost end of the first mounting frame.

[0011] In another embodiment, the first four-bar linkage includes a first link and a second link rotatably connected to the first slider via a first pivot, and a third link and a fourth link rotatably connected via a third pivot, wherein the third link connects between the first link and the fourth link, and the fourth link connects between the third link and the second link; the second four-bar linkage includes a fifth link and a sixth link rotatably connected to the second slider via a second pivot, and a seventh link and an eighth link rotatably connected via a fourth pivot, wherein the seventh link connects between the sixth link and the eighth link, and the eighth link connects between the fifth link and the seventh link.

[0012] In another embodiment, the connecting rod structure is provided in two sets and symmetrically on both sides of the first mounting frame and the second mounting frame.

[0013] In another embodiment, the first pulley assembly includes a first driven pulley rotatably connected to both ends of the first mounting frame, a first pulley motor fixed to the first mounting frame, a first driving pulley mounted on the output shaft of the first pulley motor, and a first transmission belt wound around the first driven pulley and the first driving pulley.

[0014] In another embodiment, the first pulley assembly includes a tensioning pulley mounted on the first mounting bracket for adjusting the tension of the first drive belt.

[0015] In another embodiment, the first mounting bracket has a first guide rail, and the first slider is slidably connected to the first guide rail.

[0016] In another embodiment, the second mounting bracket has a second guide rail, and the second slider is slidably connected to the second guide rail.

[0017] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model realizes the long-distance movement of the second slider by using the first pulley assembly in conjunction with multiple sets of hinged four-bar assemblies, which has a simple structure and low energy consumption. Attached Figure Description

[0018] Appendix Figure 1 This is a perspective view of the present utility model;

[0019] Appendix Figure 2 This is a perspective view of the connecting rod structure in this utility model. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0021] See appendix Figure 1 and attached Figure 2 As shown, the speed-multiplying transmission mechanism includes: a first mounting frame 1, a first pulley assembly 5, a first slider 3, a second mounting frame 2, a second slider 4, a connecting rod structure 6, and a bearing plate 7.

[0022] The first pulley assembly 5 has at least one movable section 50 that moves parallel to the first mounting frame 1; the first slider 3 is slidably connected to the first mounting frame 1 and fixedly connected to the movable section 50; the second mounting frame 2 is fixed to the first slider 3; the second slider 4 is slidably connected to the second mounting frame 2; the linkage structure 6 includes a first four-bar linkage 6A and a second four-bar linkage 6B, two of the links of the first four-bar linkage 6A and two of the links of the second four-bar linkage 6B constitute a third four-bar linkage 6C, the pivot shared by the third four-bar linkage 6C and the first four-bar linkage 6A is fixed to the first slider 3, and this pivot is the first pivot Z1; the pivot shared by the second four-bar linkage 6B and the first four-bar linkage 6A is fixed to the second slider 4, and this pivot is the second pivot Z2.

[0023] The first hinge four-bar assembly 6A includes a first link 61 and a second link 62 rotatably connected to the first slider 3 via a first pivot Z1, and a third link 63 and a fourth link 64 rotatably connected via a third pivot Z3. The third link 63 connects the first link 61 and the fourth link 64, and the fourth link 64 connects the third link 63 and the second link 62. The second hinge four-bar assembly 6B includes a fifth link 65 and a sixth link 66 rotatably connected to the second slider 4 via a second pivot Z2, and a seventh link 67 and an eighth link 68 rotatably connected via a fourth pivot Z4. The seventh link 67 connects the sixth link 66 and the eighth link 68, and the eighth link 68 connects the fifth link 65 and the seventh link 67. To maintain stable operation, the link structures 6 are arranged in two sets symmetrically on both sides of the first mounting bracket 1 and the second mounting bracket 2.

[0024] The first pulley assembly 5 includes a first driven pulley 51 rotatably connected to both ends of the first mounting frame 1, a first pulley motor 52 fixed to the first mounting frame 1, a first driving pulley 53 mounted on the output shaft of the first pulley motor 52, a first transmission belt 54 wound around the first driven pulley 51 and the first driving pulley 53, a tensioning wheel 55 mounted on the first mounting frame 1 for adjusting the tension of the first transmission belt 54, and a moving section 50 formed on the first transmission belt 54.

[0025] The first mounting bracket 1 has a first guide rail 8, and the first slider 3 is slidably connected to the first guide rail 8. The second mounting bracket 2 has a second guide rail 9, and the second slider 4 is slidably connected to the second guide rail 9.

[0026] The support plate 7 is provided with a number of mounting holes 71. Some of the mounting holes 71 are used for positioning the product positioning post 0 as needed. The support plate 7 is fixed to the second slider 4 through the remaining mounting holes 71 and bolt assembly 72.

[0027] The principle of this utility model is as follows: the first slider 3 and the second slider 4 have two extreme positions. When the first slider 3 is located at the left end of the first mounting frame 1 and the second slider 4 is located at the left end of the second mounting frame 2, the second mounting frame 2 is at the leftmost end of the first mounting frame 1. When the motor rotates and drives the pulley assembly to rotate, the moving section 50 moves from the left end of the first mounting frame 1 to the right end of the first mounting frame 1. At this time, the second mounting frame 2 moves with the first slider 3 to the right end of the first mounting frame 1. At the same time, the connecting rod structure 6 starts to retract from the extended state to the shortest state. When the second slider 4 moves to the right and passes the first slider 3, the connecting rod structure 6 starts to extend to the right from the shortest state until it is stretched to the longest state. At this time, when the first slider 3 is located at the right end of the first mounting frame 1 and the second slider 4 is located at the right end of the second mounting frame 2, the second mounting frame 2 is at the rightmost end of the first mounting frame 1, realizing the long-distance movement of the second slider 4. The structure is simple and the energy consumption is low.

[0028] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-speed transmission mechanism, characterized in that, It includes: First mounting bracket; The first pulley assembly has at least one movable section that moves parallel to the first mounting bracket; The first slider is slidably connected to the first mounting bracket and fixedly connected to the moving segment; The second mounting bracket is fixed to the first slider; The second slider is slidably connected to the second mounting bracket; The linkage structure includes a first four-bar linkage and a second four-bar linkage. Two links of the first four-bar linkage and two links of the second four-bar linkage form a third four-bar linkage. The pivot shared by the third four-bar linkage and the first four-bar linkage is fixed to the first slider. This pivot is the first pivot. The pivot shared by the second four-bar linkage and the first four-bar linkage is fixed to the second slider. This pivot is the second pivot.

2. The speed-multiplying conveying mechanism according to claim 1, characterized in that: The first four-bar linkage includes a first link and a second link rotatably connected to the first slider via a first pivot, and a third link and a fourth link rotatably connected via a third pivot. The third link connects the first link and the fourth link, and the fourth link connects the third link and the second link. The second four-bar linkage includes a fifth link and a sixth link rotatably connected to the second slider via a second pivot, and a seventh link and an eighth link rotatably connected via a fourth pivot. The seventh link connects the sixth link and the eighth link, and the eighth link connects the fifth link and the seventh link.

3. The speed-multiplying conveying mechanism according to claim 2, characterized in that: The connecting rod structure has two sets and is symmetrically arranged on both sides of the first mounting frame and the second mounting frame.

4. The speed-multiplying conveying mechanism according to claim 1, characterized in that: The first pulley assembly includes a first driven pulley rotatably connected to both ends of the first mounting frame, a first pulley motor fixed to the first mounting frame, a first driving pulley mounted on the output shaft of the first pulley motor, and a first transmission belt wound around the first driven pulley and the first driving pulley.

5. The speed-multiplying conveying mechanism according to claim 4, characterized in that: The first pulley assembly includes a tensioning pulley mounted on the first mounting bracket for adjusting the tension of the first drive belt.

6. The speed-multiplying conveying mechanism according to claim 1, characterized in that: The first mounting bracket has a first guide rail, and the first slider is slidably connected to the first guide rail.

7. The speed-multiplying conveying mechanism according to claim 1, characterized in that: The second mounting bracket has a second guide rail, and the second slider is slidably connected to the second guide rail.

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