A pair assembly structure capable of adjusting and maintaining coaxiality of two-axis head butt joint for a long time
Patent Information
- Application Number
- CN202522593354.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-08
AI Technical Summary
In traditional assembly structures, the coaxiality adjustment of the two shaft ends of the roller and the reducer is complicated, time-consuming, and difficult to maintain coaxiality for a long time, which can easily lead to equipment instability or even shaft breakage.
Transition connectors are used to achieve integrated installation and overall connection of motor base plate, bearing base plate and seated spherical bearing. A vertical mounting reference surface machined with high precision ensures rapid alignment of roller and reducer. Tire couplings are used to achieve coaxial alignment and eliminate cumulative installation errors.
It simplifies the debugging process, reduces debugging time, improves the stability of coaxiality and the operational reliability of the equipment, and extends the equipment life.
Smart Images
Figure CN224930719U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of textile machinery, and more specifically relates to a mating structure that facilitates adjustment and maintains the coaxiality of two shaft ends for a long time, especially suitable for the mating of the shaft ends of the feeder roller and the reducer. Background Technology
[0002] In the textile industry, feeders are mainly used in the post-processing stage of viscose production lines, primarily for lifting and feeding fibers onto the drying machine's curtain plates. The leveling roller and stripping roller in the feeder are both independently driven rollers. Since the feeder operates continuously year-round, and the radial loads on the leveling and stripping rollers are significant, ensuring stable operation requires a high degree of coaxiality between the rollers and the reducer during assembly and debugging. Simultaneously, the rigidity and stability of the mounting structure must be guaranteed. In traditional assembled structures, the bearing seats at both ends of the roller and the mounting surface of the reducer are parallel to the ground. During debugging, the position of the bearing seats at both ends of the roller must be adjusted first to ensure the roller's position and levelness. Then, the position and height of the reducer must be adjusted. This requires repeated and complex adjustments until all three mounting surfaces are individually adjusted before the drive end shaft of the roller and the reducer shaft can meet the coaxiality requirements. Therefore, the debugging operation for coaxiality of the two shaft ends in traditional assembled structures is complex and time-consuming. Furthermore, since the reducer mounting base and the transmission side bearing housing are independent structures and not connected as a whole, and are arranged on the outside of the frame, the reducer mounting base and the transmission side bearing housing are very easy to deform when subjected to the weight of the reducer and the operating load of the roller for a long time. This makes it difficult to maintain the coaxiality of the two shaft ends of the roller and the reducer during the production process, and in severe cases, it can even lead to shaft breakage. Summary of the Invention
[0003] The purpose of this invention is to address the shortcomings of the prior art by providing a mounting structure that facilitates adjustment and maintains the coaxiality of the two shaft ends for extended periods. This invention allows for convenient and efficient adjustment of the coaxiality of the roller and reducer shaft ends during assembly and debugging, and also enables the maintenance of coaxiality for extended periods during production. This provides a prerequisite for the stable operation of the overall equipment and offers advantages such as accurate alignment, reliable connection, smooth operation, long coaxiality duration, ease of debugging, speed and efficiency, time and labor saving, safe use, and long equipment lifespan.
[0004] The objective of this utility model can be achieved through the following technical solutions: This utility model discloses a mounting structure that facilitates adjustment and maintains the coaxiality of the two shaft ends for extended periods. It includes a roller installed within the inner cavity of the frame, with roller shaft ends at both ends (the roller rotates under the drive of a reducer, moving the fibers and lifting them to feed them onto the drying curtain plate of the subsequent workstation); a reducer with a reducer shaft end positioned at one end of the roller (providing driving force for the roller's rotation); and transition connectors installed on both the left and right outer ends of the frame, coaxially arranged with both the roller and the reducer. These transition connectors enable integrated installation, overall connection, and efficient alignment of the motor base plate, bearing base plate, and seated spherical bearings. During the rapid mounting of the roller and reducer, the coaxiality of the two shaft ends can be conveniently and efficiently adjusted, and the coaxiality can be maintained for extended periods during production, providing a prerequisite for the stable operation of the entire equipment.More specifically, on the one hand, the transition connector allows the installation direction of the motor base plate and bearing base plate to be changed from the traditional horizontal to the vertical, greatly simplifying the debugging operation and reducing debugging time. It also enables more convenient and efficient adjustment of the roller's position and level, as well as the reducer's position and height. In other words, this invention allows for convenient and efficient adjustment of the coaxiality of the roller shaft and reducer shaft during assembly and debugging, offering advantages such as accurate alignment, easy debugging, speed, efficiency, and time and labor savings. On the other hand, the transition connector forms a rigid integral connection between the motor base plate, bearing base plate, and mounted spherical bearing, effectively reducing the impact of reducer weight and roller operating load on the base plate, bearing base plate, and mounted spherical bearing. This reduces the probability of deformation and ensures that the coaxiality of the two shaft ends can be maintained for a long time during production, providing a prerequisite guarantee for the stable operation of the overall equipment. It has the advantages of reliable connection, smooth operation, long coaxiality, safe use, and long equipment life. The seated spherical bearing used to support the roller shaft end is mounted on the back positioning boss I of the front end plate of the connector with the cooperation of the bearing seat plate and bolts. (The seated spherical bearing is used to support the roller shaft end and can eliminate a certain amount of cumulative installation error; the bearing seat plate is used to mount the seated spherical bearing; the back positioning boss I can realize the rapid positioning of the bearing seat plate and the seated spherical bearing, and realize the rapid centering and connection of the roller shaft end and the front end plate of the connector.) The reducer is connected with the motor seat plate and bolts. The motor mount plate serves as the base plate connecting the reducer and the rear end plate of the connector (the rear positioning boss II enables quick alignment and connection between the motor mount plate and the rear end plate of the connector). The reducer shaft, passing through the shaft head hole of the rear end plate, and the roller shaft, passing through the shaft head hole of the front end plate, are connected via a tire coupling (the tire coupling facilitates coaxial alignment of the reducer shaft and roller shaft, effectively absorbing and compensating for axial and radial deviations, eliminating accumulated installation errors; it is also a detachable connector, facilitating installation, debugging, and subsequent maintenance). The front and back positioning bosses I of the front end plate of the connector... The surfaces of the front and back positioning bosses II are high-precision machined planes that are parallel to each other and perpendicular to the central axis of the transition connector. (Since the front of the front plate of the connector, which serves as the vertical mounting reference surface of the transition connector, the surface of the back positioning boss I, which serves as the vertical mounting reference surface of the bearing seat plate, and the surface of the back positioning boss II, which serves as the vertical mounting reference surface of the motor seat plate, are high-precision machined planes that are parallel to each other, it is easier to directly ensure the parallel accuracy of the transition connector, bearing seat plate, and motor seat plate that are vertically installed; and since each of the above vertical mounting reference surfaces is a high-precision machined plane perpendicular to the central axis of the transition connector, it can also indirectly ensure the horizontal position accuracy of the roller shaft head and the horizontal position accuracy of the reducer shaft head.)In this way, after quickly and accurately adjusting and positioning the bearing seat plate with the help of the rear positioning boss I, the roller can be quickly and accurately adjusted into position using the seated spherical bearing – that is, the roller and the connecting piece are arranged coaxially, or the roller shaft head and the connecting piece are arranged coaxially. Then, the motor seat plate can be directly installed with the help of the vertical installation positioning of the rear positioning boss II. Without manual adjustment, the coaxial arrangement of the reducer and the connecting piece can be quickly and accurately ensured. This conveniently and efficiently achieves the coaxiality of the two shaft heads of the roller and the reducer, and the roller shaft head and the reducer shaft head, greatly simplifying the debugging operation and reducing the debugging time. It has the advantages of accurate alignment, easy debugging, fast and efficient, and time and labor saving.
[0005] In this invention, the centers of the front plate shaft head hole and the rear plate shaft head hole are both located on the central axis of the transition connector. Furthermore, the roller shaft head and the front plate shaft head hole, the reducer shaft head and the rear plate shaft head hole, and the tire coupling are all arranged coaxially (thus, all the shaft head mounting holes on the roller shaft head, reducer shaft head, and the transition connector, as well as the tire coupling, are arranged coaxially with the central axis of the transition connector, and the same positioning reference helps to eliminate certain cumulative errors).
[0006] In this invention, both the front and rear plates of the connector are rectangular flat plates of the same specifications. The back of the front plate and the front of the rear plate are connected and fixed together by two side plates (thus forming a rigid integral connector—a transition connector—arranged on the outside of the frame. When subjected to the weight of the reducer and the load of the rollers for a long time, the reducer mounting base and the transmission side bearing seat are very prone to deformation, which makes it difficult to maintain the coaxiality of the two shaft ends of the rollers and reducers during production, and in severe cases, even leads to shaft breakage). The front plate of the connector has four corners machined with holes for threading. The connector has elongated holes for mounting bolts and adjusting bolt positions (allowing for a certain adjustment margin between the roller and the frame, facilitating the adjustment of the roller's position and level). Bolt mounting holes for mounting bearing seat plates and seated spherical bearings are provided on the front end plate and rear positioning boss I of the connector. Bolt mounting holes for mounting motor seat plates are provided on the rear end plate and rear positioning boss II of the connector. The central axes of all bolt mounting holes are parallel to the central axis of the transition connector (providing a prerequisite for quickly achieving coaxial arrangement of the reducer and roller, and for conveniently and efficiently adjusting the coaxiality of the roller shaft head and the reducer shaft head).
[0007] The shape and specifications of the back positioning boss I in this utility model are matched with the shape and specifications of the bearing seat plate (to facilitate quick positioning of the bearing seat plate); the shape and specifications of the back positioning boss II are matched with the shape and specifications of the motor seat plate (to facilitate quick positioning of the motor seat plate).
[0008] The design principle of this utility model is as follows: This invention mainly involves adding a transition connector at each end of the roller, with the frame as the mounting base. This invention, through the use of transition connectors, enables integrated installation, overall connection, and efficient alignment of the motor base plate, bearing base plate, and mounted spherical bearing. This allows for rapid assembly of the roller and reducer, and facilitates convenient and efficient adjustment of the coaxiality of the roller and reducer shaft ends during assembly and debugging. Furthermore, it maintains the coaxiality of the two shaft ends for extended periods during production, providing a prerequisite for the stable operation of the overall equipment. More specifically, on the one hand, the high-precision machined vertical mounting reference surface in the transition connector provides an accurate mounting reference for the bearing seat plate and motor seat plate. Simply hanging the bearing seat plate on the back positioning boss I of the high-precision machined front plate of the connector and the motor seat plate on the back positioning boss II of the high-precision machined rear plate of the connector ensures convenient and efficient alignment between the roller and the transition connector, and between the reducer and the transition connector. This allows for convenient and efficient adjustment of the two shaft ends of the roller and reducer during assembly and debugging. The coaxial alignment offers advantages such as accurate positioning, easy debugging, speed and efficiency, and time and labor savings. Furthermore, the transition connectors create a rigid, integrated connection between the motor mounting plate, bearing mounting plate, and mounted spherical bearing. This effectively reduces the likelihood of deformation caused by the weight of the reducer and the load from the rollers, maintaining coaxial alignment of the two shafts for extended periods during production. This provides a crucial guarantee for the stable operation of the entire equipment, offering advantages such as reliable connection, smooth operation, long coaxial lifespan, safe use, and long equipment lifespan.
[0009] The beneficial effects of this utility model are as follows: This invention enables convenient and efficient adjustment of the coaxiality of the roller shaft head and the reducer shaft head during assembly and debugging. It also enables the coaxiality of the two shaft heads to be maintained for a long time during production, providing a prerequisite guarantee for the stable operation of the overall equipment. It has the advantages of accurate alignment, reliable connection, smooth operation, long coaxiality, easy debugging, fast and efficient, time and labor saving, safe use, and long equipment life. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] Figure 2 This is a partially enlarged view of the installation end of this utility model connected to the speed reducer.
[0012] Figure 3 This is a partially enlarged view of the non-powered side installation of this utility model.
[0013] Figure 4 This is a half-sectional view of the transition connector.
[0014] Figure 5 yes Figure 4 The left view.
[0015] The numbers in the diagram are explained as follows: 1. Bearing seat plate; 2. Spherical bearing with seat; 3. Transition connector; 3-1. Front end plate of connector; 3-1-1. Back positioning boss I; 3-1-2. Shaft head hole of front end plate; 3-1-3. Oblong hole; 3-2. Rear end plate of connector; 3-2-1. Back positioning boss II; 3-2-2. Shaft head hole of rear end plate; 3-3. Side plate; 4. Frame; 5. Motor seat plate; 6. Tire coupling; 7. Roller; 7-1. Roller shaft head; 8. Reducer; 8-1. Reducer shaft head. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-5As shown, this utility model discloses a mating structure that facilitates adjustment and maintains the coaxiality of the two shaft ends for extended periods. It includes a roller 7 installed in the inner cavity of a frame 4, with roller shaft ends 7-1 at both ends (the roller 7 rotates under the drive of a reducer 8, moving the fibers and feeding them onto the drying curtain plate of the subsequent workstation); a reducer 8, with a reducer shaft end 8-1, arranged at one end of the roller 7 (providing driving force for the rotation of the roller 7); and transition connectors 3 installed on both the left and right outer ends of the frame 4, coaxially arranged with both the roller 7 and the reducer 8 (the transition connectors 3 enable the integrated installation of the motor base plate 5, bearing base plate 1, and seated spherical bearing 2). The system features a seamless, integrated connection and efficient alignment. During the rapid assembly of roller 7 and reducer 8, the coaxiality of the two shaft ends can be conveniently and efficiently adjusted. This coaxiality can also be maintained for extended periods during production, ensuring stable operation of the entire equipment. More specifically, the transition connector 3 allows the installation direction of the motor base plate 5 and bearing base plate 1 to be changed from horizontal to vertical, greatly simplifying debugging and reducing debugging time. This enables more convenient and efficient adjustment of the roller's position and level, as well as the reducer's position and height. In other words, this invention allows for convenient and efficient adjustment of the roller shaft end 7-1 and the reducer shaft end 8-1 during assembly and debugging. The coaxial alignment of the two shaft ends offers advantages such as accurate positioning, easy debugging, speed and efficiency, and time and labor savings. Furthermore, the transition connector 3 forms a rigid integral connection between the motor base plate 5, bearing base plate 1, and mounted spherical bearing 2, effectively reducing the likelihood of deformation caused by the weight of the reducer and the load of the roller. This ensures that the coaxial alignment of the two shaft ends is maintained for extended periods during production, providing a prerequisite for the stable operation of the entire equipment. It offers advantages such as reliable connection, smooth operation, long coaxiality, safe use, and long equipment lifespan. The mounted spherical bearing 2, used to support the roller shaft end 7-1, is connected via the bearing base plate 1. The reducer 8 is mounted on the back positioning boss Ⅰ3-1-1 of the front plate 3-1 of the connector with the help of bolts (the seated spherical bearing 2 is used to support the roller shaft head 7-1 and can eliminate a certain cumulative installation error; the bearing seat plate 1 is used to mount the seated spherical bearing 2; the back positioning boss Ⅰ3-1-1 can realize the quick positioning of the bearing seat plate 1 and the seated spherical bearing 2, and realize the quick alignment and connection between the roller shaft head 7-1 and the front plate 3-1 of the connector). The reducer 8 is mounted on the back positioning boss Ⅱ3-2-1 of the rear plate 3-2 of the connector at the end of the reducer with the help of the motor seat plate 5 and bolts (the motor seat plate 5 serves as the base plate for connecting the reducer 8 and the rear plate 3-2 of the connector).The rear positioning boss II 3-2-1 enables quick alignment and connection between the motor base plate 5 and the rear end plate 3-2 of the connector. The reducer shaft 8-1, passing through the shaft head hole 3-2-2 of the rear end plate, and the roller shaft 7-1, passing through the shaft head hole 3-1-2 of the front end plate, are connected via a tire coupling 6. (The tire coupling 6 facilitates coaxial alignment of the reducer shaft 8-1 and the roller shaft 7-1, effectively absorbing and compensating for certain axial and radial deviations, eliminating some cumulative installation errors; simultaneously, the tire coupling 6 is a detachable connector, facilitating...) Installation, debugging, and subsequent maintenance); the surfaces of the front and back positioning bosses I 3-1-1 and II 3-2-1 of the front end plate 3-1 of the connector are high-precision machined planes that are parallel to each other and perpendicular to the central axis of the transition connector 3 (because the front end plate 3-1 of the connector, which serves as the vertical mounting reference surface of the transition connector 3, the surface of the back positioning boss I 3-1-1, which serves as the vertical mounting reference surface of the bearing seat plate 1, and the surface of the back positioning boss II 3-2-1, which serves as the vertical mounting reference surface of the motor seat plate 5, are high-precision machined planes that are parallel to each other). The machined plane makes it easier to directly ensure the parallelism accuracy of the transition connector 3, bearing seat plate 1, and motor seat plate 5 for vertical installation; and since each of the above-mentioned vertical installation reference planes is a high-precision machined plane perpendicular to the central axis of the transition connector 3, it can also indirectly ensure the horizontal position accuracy of the roller shaft head 7-1 and the reducer shaft head 8-1. In this way, as long as the installation position of the bearing seat plate 1 is quickly and accurately adjusted and positioned with the help of the rear positioning boss Ⅰ3-1-1, the roller 7 can be quickly and accurately adjusted into position by the seated spherical bearing 2—that is, the roller 7 and the transition connector 3 are aligned. The connecting parts 3 are arranged coaxially, meaning the roller shaft head 7-1 and the connecting parts 3 are arranged coaxially. Then, the motor base plate 5 can be directly installed using the vertical mounting positioning of the rear positioning boss II 3-2-1. No manual adjustment is needed to quickly and accurately ensure the coaxial arrangement of the reducer 8 and the connecting parts 3. This conveniently and efficiently achieves the coaxial alignment of the roller 7 and reducer 8, and the roller shaft head 7-1 and reducer shaft head 8-1, greatly simplifying the debugging operation and reducing debugging time. It has the advantages of accurate alignment, easy debugging, speed and efficiency, and saving time and effort.
[0017] In this invention, the centers of the front plate shaft head hole 3-1-2 and the rear plate shaft head hole 3-2-2 are both located on the central axis of the transition connector 3. Furthermore, the roller shaft head 7-1 and the front plate shaft head hole 3-1-2, the reducer shaft head 8-1 and the rear plate shaft head hole 3-2-2, and the tire coupling 6 are all arranged coaxially (thus, the roller shaft head 7-1, the reducer shaft head 8-1, all the shaft head mounting holes on the transition connector 3, and the tire coupling 6 are all arranged coaxially with the central axis of the transition connector 3, and the same positioning reference helps to eliminate certain cumulative errors).
[0018] In this utility model, the front end plate 3-1 and the rear end plate 3-2 of the connector are both rectangular flat plates of the same specifications. The back of the front end plate 3-1 and the front of the rear end plate 3-2 are connected and fixed together by two side plates 3-3 (thus forming a rigid integral connector - i.e., transition connector 3, which is arranged on the outside of the frame. When subjected to the weight of the reducer and the operating load of the roller for a long time, the reducer mounting base and the transmission side bearing seat are very easy to deform, which makes it difficult to maintain the coaxiality of the two shaft ends of the roller and the reducer during production, and even leads to shaft breakage in severe cases). The front end plate 3-1 of the connector is machined with bolts for mounting and adjusting. The elongated hole 3-1-3 at the position (allows a certain adjustment margin between the roller 7 and the frame 4, making it convenient to adjust the position and level of the roller 7). Bolt mounting holes for mounting the bearing seat plate 1 and the seated spherical bearing 2 are provided on the front plate 3-1 and the back positioning boss I 3-1-1 of the connector. Bolt mounting holes for mounting the motor seat plate 5 are provided on the rear plate 3-2 and the back positioning boss II 3-2-1 of the connector. The central axis of the bolt mounting holes is parallel to the central axis of the transition connector 3 (providing a prerequisite for quickly realizing the coaxial arrangement of the reducer 8 and the roller 7, and for conveniently and efficiently adjusting the coaxiality of the two shaft ends of the roller shaft end 7-1 and the reducer shaft end 8-1).
[0019] The shape and specifications of the back positioning boss Ⅰ3-1-1 described in this utility model are matched with the shape and specifications of the bearing seat plate 1 (to facilitate quick positioning of the bearing seat plate 1); the shape and specifications of the back positioning boss Ⅱ3-2-1 are matched with the shape and specifications of the motor seat plate 5 (to facilitate quick positioning of the motor seat plate 5).
[0020] The specific usage of this utility model is as follows: Before using this utility model, assemble it according to the above structural description and the positional relationship shown in the attached drawings: First, install the transition connector 3 on the left and right outer ends of the frame 4. Before connecting and fixing, adjust the transition connector 3 to be coaxial with the roller 7. That is, let the roller shaft heads 7-1 at both ends of the roller 7 pass through the frame 4, the front end plate 3-1 of the connector, and the seated spherical bearing 2 in sequence and then extend into the inner cavity of the tire coupling 6. Connect the bearing seat plate 1 to the back positioning boss I 3-1-1 of the front end plate 3-1 of the connector. The surface of the back positioning boss I 3-1-1 is a high-precision machined plane and is perpendicular to the central axis of the transition connector 3. In this way, the bearing seat plate 1 and the seated spherical bearing 2 can be quickly positioned by using the back positioning boss I 3-1-1, and the roller shaft head 7-1 and the front end plate 3-1 of the connector can be quickly aligned and connected. This also makes it convenient and efficient to achieve the coaxial connection of the roller 7 and the transition connector 3. Next, the reducer 8 is installed on the outer end of the adjacent transition connector 3—that is, the reducer shaft head 8-1 of the reducer 8 passes through the motor base plate 5 and the rear end plate 3-2 of the connector and extends into the inner cavity of the tire coupling 6. The motor base plate 5 is then connected to the back positioning boss II 3-2-1 on the rear end plate of the connector. The surface of the back positioning boss II 3-2-1 is a high-precision machined plane and is perpendicular to the central axis of the transition connector 3. In this way, the back positioning boss II 3-2-1 can be used to quickly position the motor base plate 5 and quickly align and connect the reducer shaft head 8-1 with the rear end plate 3-2 of the connector, thus conveniently and efficiently achieving the coaxial connection of the reducer 8 and the transition connector 3. Then, the roller shaft head 7-1 and the reducer shaft head 8-1, which are inserted into its inner cavity and are coaxially aligned, are connected using the tire coupling 6. This completes the rapid assembly of this utility model. In summary, the main feature of this invention is the addition of a transition connector 3 at each end of the roller 7, with the frame 4 as the mounting base. This invention utilizes the transition connector 3 to achieve integrated installation, overall connection, and efficient alignment of the motor base plate 5, bearing base plate 1, and seated spherical bearing 2, thereby enabling rapid assembly of the roller 7 and the reducer 8. It also allows for convenient and efficient adjustment of the coaxiality of the roller shaft head 7-1 and the reducer shaft head 8-1 during assembly and debugging, offering advantages such as accurate alignment, easy debugging, speed and efficiency, and time and labor saving.
[0021] After assembly, this utility model can operate normally—that is, starting the reducer 8, the reducer shaft head 8-1 rotates, and drives the tire coupling 6, roller shaft head 7-1, and roller 7, which are connected in sequence and arranged coaxially, to rotate synchronously and smoothly. While the roller 7 rotates smoothly, it drives the fiber to move—lifting the fiber and feeding it onto the drying curtain plate of the subsequent station. Because this utility model uses the transition connector 3 to form a rigid integral connection between the motor base plate 5, bearing base plate 1, and mounted spherical bearing 2, it can effectively reduce the probability of deformation of the base plate 5, bearing base plate 1, and mounted spherical bearing 2 due to the influence of the reducer's gravity and the roller's operating load. It can maintain the coaxiality of the two shaft heads for a long time during the production process, providing a prerequisite guarantee for the stable operation of the overall equipment. It has the advantages of reliable connection, stable operation, long coaxiality, safe use, and long equipment life.
Claims
1. A mating structure for easy adjustment and long-term maintenance of the coaxiality of two shaft ends, comprising a roller (7) installed in the inner cavity of a frame (4) and having roller shaft ends (7-1) at both ends, and a reducer (8) arranged at one end of the roller (7) and having a reducer shaft end (8-1), characterized in that: Transition connectors (3) are installed on both the left and right outer ends of the frame (4), which are coaxially arranged with the roller (7) and the reducer (8). The seated spherical bearing (2) used to support the roller shaft head (7-1) is mounted on the back positioning boss I (3-1-1) of the front end plate (3-1) of the connector with the help of the bearing seat plate (1) and bolts. The reducer (8) is mounted on the back positioning boss of the rear end plate (3-2) of the connector at the end of the reducer with the help of the motor seat plate (5) and bolts. On platform II (3-2-1), the reducer shaft (8-1) passing through the rear end plate shaft head hole (3-2-2) and the roller shaft (7-1) passing through the front end plate shaft head hole (3-1-2) are connected by a tire coupling (6); the front and back positioning boss I (3-1-1) surfaces and the back positioning boss II (3-2-1) surfaces of the front end plate (3-1) of the connecting piece are high-precision machined planes that are parallel to each other and perpendicular to the central axis of the transition connecting piece (3).
2. The mating structure according to claim 1, which facilitates adjustment and maintains the coaxiality of the two shaft heads for a long time, is characterized in that: The centers of the front plate shaft head hole (3-1-2) and the rear plate shaft head hole (3-2-2) are both located on the central axis of the transition connector (3), and the roller shaft head (7-1) and the front plate shaft head hole (3-1-2), the reducer shaft head (8-1) and the rear plate shaft head hole (3-2-2), and the tire coupling (6) are all arranged coaxially.
3. The mating structure according to claim 1, which facilitates adjustment and maintains the coaxiality of the two shaft heads for a long time, is characterized in that: The front end plate (3-1) and the rear end plate (3-2) of the connector are both rectangular flat plates of the same specifications. The back of the front end plate (3-1) and the front of the rear end plate (3-2) are connected and fixed together by two side plates (3-3). There are elongated holes (3-1-3) at the four corners of the front end plate (3-1) for inserting bolts and adjusting the position of bolts. Bolt mounting holes for mounting bearing seat plate (1) and seated spherical bearing (2) are provided on the front end plate (3-1) and the rear positioning boss I (3-1-1). Bolt mounting holes for mounting motor seat plate (5) are provided on the rear end plate (3-2) and the rear positioning boss II (3-2-1). The central axis of the bolt mounting holes is parallel to the central axis of the transition connector (3).
4. The mating structure according to claim 1, which facilitates adjustment and maintains the coaxiality of the two shaft heads for a long time, is characterized in that: The shape and specifications of the back positioning boss I (3-1-1) match the shape and specifications of the bearing seat plate (1); the shape and specifications of the back positioning boss II (3-2-1) match the shape and specifications of the motor seat plate (5).