Quasi-constant-speed multi-pivot universal transmission mechanism

Abstract

The utility model relates to the technical field of mechanical transmission, in particular to a quasi-constant-speed multi-pivot universal transmission mechanism which comprises a fixed support. The universal transmission assembly is arranged on the side wall of the fixing support and used for moving the fixing support; the inner wall of the fixing support is arranged on a stabilizing assembly, the stabilizing assembly is used for limiting the universal transmission assembly and comprises a stabilizing rod, and the stabilizing rod penetrates through the inner wall of the fixing support. According to the quasi-constant-speed multi-pivot universal transmission mechanism, the universal transmission assembly is arranged on the side wall of the fixing support, and the first rotating shaft and the second rotating shaft which are rotationally connected to the universal transmission assembly are matched with each other, so that the using stability and speed of the rotating shafts are improved, and the applicability of the rotating shafts during installation is improved; and meanwhile, stabilizing rods on the stabilizing assemblies are inserted into the two sides of the rotating shafts, so that the connecting stability of the first rotating shaft and the second rotating shaft with the fixing support is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, specifically a quasi-constant velocity multi-pivot universal transmission mechanism. Background Technology

[0002] The universal joint drive shaft mainly consists of a universal joint, a drive shaft, and an intermediate support. It is used to transmit power between two shafts whose relative positions change continuously during operation. Universal joint drive devices are widely used in the automotive engineering industry and other fields.

[0003] Currently, in non-automotive engineering machinery industries, universal joint transmission is not the preferred transmission method. Gear transmission is chosen due to its advantages such as high transmission efficiency and compact structure. However, gear transmission has high manufacturing and assembly requirements, and pulley and sprocket transmissions are generally used at low speeds. The transmission chain cannot have any included angles, which leads to a large space occupation. Therefore, it is not suitable for equipment in small spaces. Utility Model Content

[0004] The purpose of this utility model is to provide a quasi-constant velocity multi-pivot universal transmission mechanism to solve the problems mentioned in the background art, such as the high requirements for the manufacturing and assembly of current gear transmissions, the fact that pulley and sprocket transmissions are generally used at low speeds, the inability of the transmission chain to have included angles, which leads to a large space occupation for installation and is therefore unsuitable for equipment in smaller spaces.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quasi-constant velocity multi-pivot universal transmission mechanism, including a fixed bracket; and further comprising;

[0006] The universal drive assembly is disposed on the side wall of the fixed bracket and is used to move the fixed bracket. The universal drive assembly includes a first rotating shaft, which is movably inserted into the side wall of the fixed bracket. A second rotating shaft is rotatably connected to the inner wall of the first rotating shaft, and the second rotating shaft is movably inserted into the side wall of the fixed bracket.

[0007] A stabilizing component is disposed on the inner wall of a fixed bracket and is used to limit the universal joint drive assembly. The stabilizing component includes a stabilizing rod that penetrates the inner wall of the fixed bracket and is inserted into both sides of the first and second rotating shafts.

[0008] Preferably, the universal joint drive assembly further includes ball joint drive pins, multiple sets of ball joint drive pins are slidably connected inside the second rotating shaft, and a spring is fixedly connected to the bottom of the ball joint drive pin, and the end of the spring is fixedly connected to the second rotating shaft.

[0009] Preferably, the side wall of the first rotating shaft is provided with a shaft groove, the ball head drive pin is slidably connected inside the shaft groove, and the ball head drive pin is rotatably connected inside the first rotating shaft.

[0010] Preferably, the side wall of the first rotating shaft is threaded with a limit ring.

[0011] Preferably, the stabilizing component further includes a connecting rod, which is fixedly connected to the end of the stabilizing rod and slidably connected inside the fixed bracket.

[0012] Preferably, stabilizing grooves are provided on both sides of the first and second rotating shafts, and the stabilizing rod is inserted into the inside of the stabilizing groove.

[0013] Preferably, a shaft extends through the side wall of the fixed bracket, and a gear is fixedly connected to the end of the shaft, the gear being rotatably connected inside the fixed bracket.

[0014] Preferably, a rack is fixedly connected to the bottom of the connecting rod, and the rack meshes with a gear.

[0015] Compared with the prior art, the beneficial effects of this utility model are: by setting a universal transmission assembly on the side wall of the fixed bracket, and by using the first and second rotating shafts rotatably connected on the universal transmission assembly to cooperate with each other, the assembly and use can be carried out, which improves the stability and speed of the rotating shaft and increases its applicability during installation.

[0016] Meanwhile, by inserting the stabilizing rods on the stabilizing components into both sides of the first and second rotating shafts, the connection stability between the first and second rotating shafts and the fixed bracket is improved. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the fixing bracket of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the universal transmission assembly of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the first rotating shaft of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the second rotating shaft of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the stabilizing component of this utility model;

[0022] Figure 6 This is a cross-sectional structural diagram of the universal transmission mechanism of this utility model;

[0023] Figure 7 This is a schematic diagram showing the speeds of the first and second rotating shafts of this utility model;

[0024] Figure 8 This is a schematic diagram showing the speed of the two pivots of this utility model.

[0025] In the diagram: 1. Fixed bracket; 2. Universal drive assembly; 201. First rotating shaft; 202. Second rotating shaft; 203. Ball joint drive pin; 2031. Shaft groove; 204. Spring; 205. Limiting ring; 3. Stabilizing assembly; 301. Stabilizing rod; 3011. Stabilizing groove; 302. Connecting rod; 303. Rack; 304. Gear; 305. Shaft. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] like Figure 1 - Figure 8 As shown, this application provides a quasi-constant velocity multi-pivot universal joint transmission mechanism, including a fixed bracket 1; and further including;

[0029] Specifically, such as Figure 1 As shown, the side wall of the fixed bracket 1 is provided with the universal transmission assembly 2. The universal transmission assembly 2 is used to move the fixed bracket 1. The universal transmission assembly 2 includes a first rotating shaft 201, which is movably inserted into the side wall of the fixed bracket 1. The inner wall of the first rotating shaft 201 is rotatably connected to a second rotating shaft 202, which is movably inserted into the side wall of the fixed bracket 1. By providing the universal transmission assembly 2 on the side wall of the fixed bracket 1, and by cooperating with the first rotating shaft 201 and the second rotating shaft 202 rotatably connected on the universal transmission assembly 2, the stability and speed of the rotating shaft are improved, and its applicability is increased.

[0030] Specifically, such as Figure 2 As shown, the second rotating shaft 202 has multiple sets of ball joint drive pins 203 slidably connected inside. A spring 204 is fixedly connected to the bottom of the ball joint drive pin 203, and the end of the spring 204 is fixedly connected to the second rotating shaft 202.

[0031] The ball end of the second rotating shaft 202 mates with the guide cylindrical surface of the first rotating shaft 201 and is embedded within the guide cylinder of the first rotating shaft 201, forming a linear height pair. The ball end drive pin 203 mates with the cylindrical surface of the second rotating shaft 202, forming a cylindrical pair. The ball end drive pin 203 also mates with the cylindrical guide groove of the first rotating shaft 201, forming a linear height pair. The ball end drive pins 203 are evenly installed on the spherical surface of the second rotating shaft 202, and the included angles between each ball end drive pin 203 are equal, α1 = α2 = α3, and correspond to the cylindrical guide grooves opened on the second rotating shaft 202.

[0032] The first rotating shaft 201 has a shaft groove 2031 on its side wall. The ball head drive pin 203 is slidably connected inside the shaft groove 2031. The ball head drive pin 203 is rotatably connected inside the first rotating shaft 201. By passing the ball head drive pin 203 through the shaft groove 2031 on the first rotating shaft 201 and then threading the limiting ring 205 to the side wall of the first rotating shaft 201, when the first rotating shaft 201 and the second rotating shaft 202 are in motion, the second rotating shaft 202 will rotate inside the circular groove of the first rotating shaft 201.

[0033] The side wall of the first rotating shaft 201 is threaded with a limiting ring 205.

[0034] Specifically, such as Figure 4 As shown, the inner wall of the fixed bracket 1 is provided with a stabilizing component 3. The stabilizing component 3 is used to limit the universal transmission component 2. The stabilizing component 3 includes a stabilizing rod 301, which penetrates the inner wall of the fixed bracket 1. The stabilizing rod 301 is inserted into both sides of the first rotating shaft 201 and the second rotating shaft 202. By providing the stabilizing component 3 on the inner wall of the fixed bracket 1 and by inserting the stabilizing rod 301 on the stabilizing component 3 into both sides of the first rotating shaft 201 and the second rotating shaft 202, the connection stability between the first rotating shaft 201 and the second rotating shaft 202 and the fixed bracket 1 is improved, and the situation where the rotating shaft is easily detached from the fixed bracket 1 when rotating is avoided.

[0035] Stabilizing grooves 3011 are provided on both sides of the first rotating shaft 201 and the second rotating shaft 202, and stabilizing rods 301 are inserted into the inside of the stabilizing grooves 3011.

[0036] Specifically, such as Figure 5 As shown, a connecting rod 302 is fixedly connected to the end of the stabilizer bar 301, and the connecting rod 302 is slidably connected inside the fixed bracket 1.

[0037] Specifically, such as Figure 1 - Figure 8As shown, the quasi-constant velocity multi-pivot universal joint transmission mechanism can smoothly transmit the speed of the input shaft at a high speed of 30000° / s (5000r / min), while the speed test curve of the output shaft of the two-pivot universal joint transmission mechanism shows obvious speed jumps and vibration burrs. In fact, after analysis and testing, the dynamic stability of the transmission of the quasi-constant velocity multi-pivot universal joint transmission mechanism is more than 10 times that of the two-pivot universal joint transmission mechanism.

[0038] A shaft 305 runs through the side wall of the fixed bracket 1. A gear 304 is fixedly connected to the end of the shaft 305. The gear 304 is rotatably connected inside the fixed bracket 1. A rack 303 is fixedly connected to the bottom of the connecting rod 302. The rack 303 and the gear 304 mesh with each other. By rotating the shaft 305 and the gear 304, the gear 304 can drive the two sets of racks 303 to move to both sides. At this time, the rack 303 will drive the stabilizing rod 301 to retract inside the fixed bracket 1, so that the fixed bracket 1 can be moved and removed.

[0039] The specific solution is as follows: First, the ball head drive pin 203 on the second rotating shaft 202 passes through the shaft groove 2031 on the first rotating shaft 201. Then, the limiting ring 205 is threaded to the side wall of the first rotating shaft 201. Next, the first rotating shaft 201 and the second rotating shaft 202 pass through the two sets of fixed brackets 1 respectively, and the shaft 305 and the gear 304 are rotated. At the same time, the gear 304 can drive the two sets of racks 303 to move towards each other. At this time, the racks 303 will drive the stabilizing rod 301 to be inserted into the stabilizing grooves 3011 on both sides of the first rotating shaft 201 and the second rotating shaft 202 for fixation. Finally, the fixed bracket 1 is fixedly installed in the device.

[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework 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.

[0041] This utility model is 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 quasi-constant velocity multi-pivot universal joint comprising a fixed support (1); characterized in that, Also includes; Universal transmission assembly (2), the universal transmission assembly (2) is arranged in the side wall of the fixed support (1), the universal transmission assembly (2) is used to move the fixed support (1), the universal transmission assembly (2) includes the first rotating shaft (201), the first rotating shaft (201) is movably inserted in the side wall of the fixed support (1), the inner wall of the first rotating shaft (201) is rotatably connected with the second rotating shaft (202), the second rotating shaft (202) is movably inserted in the side wall of the fixed support (1); Stabilizing assembly (3), the stabilizing assembly (3) is arranged on the inner wall of the fixed support (1), the stabilizing assembly (3) is used for limiting the universal transmission assembly (2), the stabilizing assembly (3) includes a stabilizing rod (301), the stabilizing rod (301) penetrates the inner wall of the fixed support (1), and the stabilizing rod (301) is inserted on both sides of the first rotating shaft (201) and the second rotating shaft (202).

2. A quasi-universal constant velocity multi-pivot universal joint according to claim 1, wherein, The universal transmission assembly (2) further comprises a ball head transmission pin shaft (203), a plurality of ball head transmission pin shafts (203) are slidably connected in the second rotating shaft (202), the bottom of the ball head transmission pin shaft (203) is fixedly connected with a spring (204), and the end of the spring (204) is fixedly connected with the second rotating shaft (202).

3. A quasi-universal constant velocity multi-pivot universal joint according to claim 2, wherein, The side wall of the first rotating shaft (201) is provided with an axle slot (2031), the ball head transmission pin shaft (203) is slidably connected in the axle slot (2031), and the ball head transmission pin shaft (203) is rotatably connected in the first rotating shaft (201).

4. A quasi-universal constant velocity multi-pivot universal joint according to claim 3, wherein, The side wall of the first rotating shaft (201) is threadedly connected with a limiting ring (205).

5. A quasi-constant velocity multi-pivot universal transmission mechanism according to claim 4, wherein The stabilizing assembly (3) further comprises a connecting rod (302), the connecting rod (302) is fixedly connected with the end of the stabilizing rod (301), and the connecting rod (302) is slidably connected in the fixed support (1).

6. A quasi-universal constant velocity multi-pivot universal joint according to claim 5, wherein, The first rotating shaft (201) and the second rotating shaft (202) are both provided with a stabilizing groove (3011), and the stabilizing rod (301) is inserted in the stabilizing groove (3011).

7. A quasi-universal constant velocity multi-pivot universal joint according to claim 6, wherein The side wall of the fixed support (1) penetrates an axle rod (305), the end of the axle rod (305) is fixedly connected with a gear (304), and the gear (304) is rotatably connected in the fixed support (1).

8. A quasi-universal constant velocity multi-pivot universal joint according to claim 7, wherein, The bottom of the connecting rod (302) is fixedly connected with a rack (303), and the rack (303) and the gear (304) are engaged.

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