Duplex universal joint

Abstract

The utility model discloses a duplex universal joint, and belongs to the technical field of universal joints. Comprising a universal joint body and a pair of connecting pieces, the universal joint body comprises a fixing joint and a pair of connecting joints, first grooves are formed in the two ends of the fixing joint, the connecting joints are located at the two ends of the fixing joint, and second grooves are formed in the end faces, close to the fixing joint, of the connecting joints; the pair of connecting pieces comprises a joint, rotating shafts are installed on one pair of opposite sides of the four sides of the joint, a connecting shaft and a sliding shaft are installed on the other pair of opposite sides of the four sides of the joint respectively, a sliding hole and a first sliding groove which are communicated are formed in one side of the joint, the sliding shaft slides in the sliding hole and the first sliding groove, and the sliding shaft is elastically connected with the first sliding groove. The pair of rotating shafts are rotationally mounted on the two sides of the first groove, and the connecting shaft and the sliding shaft are rotationally mounted on the two sides of the second groove; the dual-connection universal joint can achieve the purpose of being convenient for a user to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to the field of universal joint technology, specifically a double-connection universal joint. Background Technology

[0002] In the field of modern mechanical transmission, the universal joint is a key component widely used in various mechanical equipment, such as automobiles, ships, and industrial machinery, to realize power transmission between different shafts. It can ensure reliable torque transmission even when the included angle between the two shafts is constantly changing, ensuring the normal operation of the mechanical equipment. The double universal joint is actually a set of double universal joint constant velocity transmission devices with the transmission shaft length reduced to the minimum.

[0003] Based on the above, the inventors have discovered the following problems: the traditional installation method of the universal joint is relatively simple and crude, usually requiring the use of tools such as hammers to drive it into the installation position. Although this installation method seems convenient, it actually has great drawbacks. During the hammering installation process, it is difficult to precisely control the hammering force, and it is easy to use too much force. Excessive impact force will directly act on various components of the universal joint, such as the universal joint and needle roller bearings. This may cause deformation of the journal of the universal joint, affecting its fitting accuracy with the bearing, and thus reducing the rotational flexibility and stability of the universal joint. Utility Model Content

[0004] The purpose of this invention is to provide a double-connection universal joint to solve the problems mentioned in the background art.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A double-connection universal joint includes a universal joint body and a pair of connectors.

[0007] Furthermore, the universal joint body includes a fixed joint and a pair of connecting joints. The fixed joint has a first groove at both ends. The pair of connecting joints are located at both ends of the fixed joint. Each pair of connecting joints has a second groove on its end face near the fixed joint. A fixing rod is installed on the end face of each pair of connecting joints away from the fixed joint. Each pair of connecting members includes a joint. A rotating shaft is installed on one pair of opposite sides of the joint. A connecting shaft and a sliding shaft are respectively installed on the other pair of opposite sides of the joint. A connecting sliding hole and a first sliding groove are provided on one side of the joint. The sliding shaft slides within the sliding hole and the first sliding groove, and the sliding shaft and the first sliding groove are elastically connected. A pair of rotating shafts are rotatably installed on both sides of the first groove, and the connecting shaft and the sliding shaft are rotatably installed on both sides of the second groove. When installing the universal joint, there is no need to use a hammer as in the traditional way. The installer can operate the sliding shaft to slide it into the first sliding groove, and then align the connecting shaft and the sliding shaft with both sides of the second groove for installation. This greatly reduces the installation difficulty, avoids damage to the components caused by hammering, and ensures the rotational flexibility and stability of the universal joint.

[0008] Furthermore, a limiting rod is installed inside the first slide groove, and a limiting groove is formed on the end face of the sliding shaft. The limiting rod slides within the limiting groove, which can limit the sliding range of the sliding shaft within the first slide groove.

[0009] Furthermore, a slider is installed on the side of the limiting rod, and a second sliding groove and a retaining groove are provided in the limiting groove. The second sliding groove and the retaining groove are connected and form an "L" shape. The slider slides in the second sliding groove and the retaining groove. When disassembling, the sliding shaft is pressed. When the sliding shaft slides to the bottom, the sliding shaft is rotated, and the slider can slide from the second sliding groove into the retaining groove to realize the positioning of the sliding shaft, thereby fixing the sliding shaft in the second sliding groove for the user to disassemble.

[0010] Furthermore, a spring is rotatably connected between the sliding shaft and the first slide groove, and the elastic force provided by the spring can cause the sliding shaft to extend out of the second slide groove.

[0011] Furthermore, a limiting ring is installed on the end face of the sliding shaft located in the first sliding groove. The limiting ring abuts against the first sliding groove. The limiting ring can further limit the sliding distance of the sliding shaft, prevent the sliding shaft from sliding excessively and disengaging from the first sliding groove, and at the same time, it can also play a certain limiting role for the spring, ensuring that the spring works normally.

[0012] Furthermore, a pair of through holes communicating with the second groove are provided on the outer side of the connecting joint. The connecting shaft and the sliding shaft are rotatably installed in the through holes. A sealing plug is engaged in the through holes. The through holes facilitate the installation and rotation of the connecting shaft and the sliding shaft, while the sealing plug can prevent dust, impurities, etc. from entering the second groove, protect the mating parts of the connecting shaft, the sliding shaft and the second groove, and extend the service life of the universal joint.

[0013] Furthermore, a hexagonal groove is provided on the end face of the sliding shaft located outside the first groove. The hexagonal groove makes it convenient for installers to use a hex wrench to drive the sliding shaft to rotate, and further facilitates the user to disassemble the sliding shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the double-connection universal joint realizes the function of easy disassembly and assembly, avoids the damage to components caused by traditional installation methods, and improves the rotational flexibility and stability of the universal joint. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the double-connection universal joint disclosed in an embodiment of the present utility model;

[0016] Figure 2 This is an exploded structural diagram of the double-connection universal joint disclosed in an embodiment of the present utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the double-connection universal joint disclosed in an embodiment of the present utility model.

[0018] In the diagram: 100, universal joint body; 1001, fixed joint; 1002, connecting joint; 1003, fixed rod; 1004, first groove; 1005, second groove; 1006, through hole; 1007, sealing plug; 200, connector; 2001, joint; 2002, connecting shaft; 2003, rotating shaft; 2004, first sliding groove; 2005, limiting ring; 2006, sliding shaft; 2007, hexagonal groove; 2008, limiting rod; 2009, limiting groove; 2010, slider; 2011, second sliding groove; 2012, slot; 2013, spring. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1 - Figure 3 This utility model provides a technical solution: a double-connection universal joint, comprising the following steps:

[0021] When installing a new double-connecting universal joint, unlike traditional cross-shaft universal joints, it is not necessary to use a hammer. The technician first installs the connecting joint 1002 in the designated position by inserting the fixing rod 1003 into the designated position. Then, by pressing the sliding shaft 2006, it slides into the first slide groove 2004. Because a spring 2013 rotatably connects the sliding shaft 2006 and the first slide groove 2004, the elasticity of the spring 2013 provides a certain degree of cushioning during operation, preventing collision damage. After the sliding shaft 2006 has slid to the bottom, it is then rotated to engage the slider 2010. The joint 2001 is already rotatably installed in the first groove 1004 when it leaves the factory. Therefore, the maintenance personnel only need to align the connecting shaft 2002 and the sliding shaft 2006 with the through hole 1006 respectively, and install the connecting shaft 2002 in the through hole 1006. Then, insert the hex wrench through the through hole 1006 into the hexagonal groove 2007 and rotate the hex wrench to make the slider 2010 disengage from the slot 2012. At this time, the sliding shaft 2006 is reset under the action of the spring 2013 and is locked into the through hole 1006, thus completing the initial connection between the universal joint body 100 and the connecting member 200.

[0022] After installation, the maintenance personnel will engage the sealing plug 1007 in the through hole 1006 on the outside of the connecting joint 1002 to prevent dust, impurities and other contaminants from entering the second groove 1005, thus protecting the mating parts of the connecting shaft 2002, sliding shaft 2006 and the second groove 1005 and extending the service life of the universal joint.

[0023] When the universal joint needs to be disassembled for repair or replacement, the repairman first removes the sealing plug 1007. Then, by inserting a hex wrench into the hexagonal groove 2007, the repairman presses down on the sliding shaft 2006, causing the sliding shaft 2006 to slide into the first slide groove 2004. When the sliding shaft 2006 slides to the bottom, the repairman rotates the sliding shaft 2006. At this time, the slider 2010 on the side of the limiting rod 2008 slides into the slot 2012 through the second slide groove 2011, thus positioning the sliding shaft 2006 and fixing it in the second slide groove 2011. In this way, the repairman can easily remove the joint 2001 from the connecting joint 1002. The entire disassembly process is simple and avoids damage to the universal joint components caused by traditional disassembly methods.

[0024] Specifically, the working principle of this double-connection universal joint is as follows: During operation, when power is transmitted to the fixed joint 1001 of the universal joint body 100, the fixed joint 1001 moves due to its connection with other mechanical components. At this time, the rotating shafts 2003 at both ends of the fixed joint 1001 rotate with the movement of the fixed joint 1001. Since the rotating shafts 2003 are mounted on the joint 2001, the joint 2001 rotates with the rotating shafts 2003. The connecting shaft 2002 and sliding shaft 2006 on the joint 2001 are rotatably mounted on both sides of the second groove 1005 of the connecting joint 1002. The rotation of the joint 2001 drives the connecting shaft 2002 and sliding shaft 2006 to rotate, thereby transmitting power to the connecting joint 1002. The connecting joint 1002 is connected to other mechanical components through the fixed rod 1003, achieving further power transmission. During this process, even if the angle between the two shafts changes, this double-connection universal joint can stably transmit power through this structure, ensuring the normal operation of the mechanical equipment.

Claims

1. A double-connection universal joint, characterized in that, include: Universal joint body (100), the universal joint body (100) includes a fixed joint (1001) and a pair of connecting joints (1002). The fixed joint (1001) has a first groove (1004) at both ends. The pair of connecting joints (1002) are located at both ends of the fixed joint (1001). The pair of connecting joints (1002) has a second groove (1005) on the end face near the fixed joint (1001). The pair of connecting joints (1002) has a fixing rod (1003) installed on the end face away from the fixed joint (1001). A pair of connectors (200), each pair of connectors (2001) includes a joint (2001). A rotating shaft (2003) is installed on one pair of opposite sides of the four sides of the joint (2001). A connecting shaft (2002) and a sliding shaft (2006) are respectively installed on the other pair of opposite sides of the four sides of the joint (2001). A connecting sliding hole and a first sliding groove (2004) are provided on one side of the joint (2001). The sliding shaft (2006) slides in the sliding hole and the first sliding groove (2004), and the sliding shaft (2006) and the first sliding groove (2004) are elastically connected. The pair of rotating shafts (2003) are rotatably installed on both sides of the first groove (1004), and the connecting shaft (2002) and the sliding shaft (2006) are rotatably installed on both sides of the second groove (1005).

2. A double-connection universal joint according to claim 1, characterized in that, A limiting rod (2008) is installed inside the first slide groove (2004), and a limiting groove (2009) is opened on the end face of the sliding shaft (2006), and the limiting rod (2008) slides in the limiting groove (2009).

3. A double-connection universal joint according to claim 2, characterized in that, A slider (2010) is installed on the side of the limiting rod (2008). A second sliding groove (2011) and a slot (2012) are provided in the limiting groove (2009). The second sliding groove (2011) and the slot (2012) are connected and form an "L" shape. The slider (2010) slides in the second sliding groove (2011) and the slot (2012).

4. A double-connection universal joint according to claim 1, characterized in that, A spring (2013) is rotatably connected between the sliding shaft (2006) and the first sliding groove (2004).

5. A double-connection universal joint according to claim 1, characterized in that, The sliding shaft (2006) is mounted with a limiting ring (2005) on the end face of the first sliding groove (2004), and the limiting ring (2005) abuts against the first sliding groove (2004).

6. A double-connection universal joint according to claim 1, characterized in that, The outer side of the connecting joint (1002) is provided with a pair of through holes (1006) communicating with the second groove (1005). The connecting shaft (2002) and the sliding shaft (2006) are rotatably installed in the through holes (1006). A sealing plug (1007) is engaged in the through hole (1006).

7. A double-connection universal joint according to claim 1, characterized in that, The sliding shaft (2006) has a hexagonal groove (2007) on its end face outside the first sliding groove (2004).

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