Centering piece and encoder centering installation device

Abstract

The utility model relates to the technical field of precision measurement equipment, and discloses a centering piece and an encoder centering installation device. The centering piece is used for centering installation of an encoder and a rotating shaft, the centering piece comprises a cylinder, the outer diameter of the cylinder is set to be matched with the aperture of an installation hole of an encoder adapter, a shaft hole is formed in one end of the cylinder, the shaft hole and the cylinder are coaxial, and the center of the shaft hole is larger than that of the cylinder. The hole diameter of the shaft hole is set to be matched with the outer diameter of a rotating shaft or a connecting shaft of a rotating shaft adapter. The other end of the cylinder is provided with a stop part. And the stopping part is arranged to be capable of stopping on the side surface of one side, deviating from the rotating shaft or the connecting shaft, of the encoder adapter when the cylinder is inserted into the mounting hole and the shaft hole is inserted into the rotating shaft or the connecting shaft. When the centering piece is applied to the installation of the encoder of the chassis dynamometer, the accurate centering of the encoder and the rotor of the chassis dynamometer can be ensured, and the installation is simple and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to precision measuring equipment technical field, concretely relates to a centering piece and including the encoder centering installation device of the centering piece. BACKGROUND

[0002] As a kind of signal (such as bit stream) or data is arranged, the equipment of conversion into the signal form available to communication, transmission and storage, encoder is widely used in precision measurement field.The installation precision of encoder is usually required to be higher, for example, chassis dynamometer encoder, when installing, the centering precision of shaft center and rotating shaft is extremely high (the included angle wants ≤1 °, the relative distance of two shaft centers wants less than 0.5mm).

[0003] However, the installation of existing encoder mainly relies on manual adjustment, and there are the following problems: (1) insufficient accuracy: the centering accuracy depends on the experience of maintenance personnel, and it is difficult to ensure consistency; (2) low efficiency: it needs to be disassembled and tested several times, which is time-consuming and labor-intensive; (3) environmental restrictions: the site space is limited, and traditional centering instruments cannot be used; (4) high failure rate: the installation accuracy does not meet the standard, which leads to frequent equipment failures. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the above problems, and provides a centering piece and an encoder centering installation device comprising the centering piece, to ensure the accurate centering of the encoder and the rotor shaft center of the chassis dynamometer.

[0005] To achieve the above purpose, the utility model provides a centering piece for the centering installation of encoder and rotating shaft, which comprises a cylindrical body. The outer diameter of the cylindrical body is adapted to the hole diameter of the mounting hole of the encoder adapter. One end of the cylindrical body is provided with a shaft hole coaxial with the cylindrical body. The hole diameter of the shaft hole is adapted to the outer diameter of the connecting shaft of the rotating shaft or the rotating shaft adapter. The other end of the cylindrical body is provided with a stop portion. The stop portion is arranged to stop on the side surface of the encoder adapter away from the rotating shaft or the connecting shaft when the cylindrical body is inserted into the mounting hole and the shaft hole is inserted with the rotating shaft or the connecting shaft.

[0006] In some embodiments, the stop portion is a ring-shaped boss radially protruding from the other end of the cylindrical body.

[0007] In some embodiments, the other end of the cylindrical body is provided with a manipulation portion for manipulating the movement of the centering piece.

[0008] In some embodiments, the manipulation portion is a threaded hole provided on the other end of the cylindrical body for bolt connection, and the threaded hole is coaxial with the cylindrical body.

[0009] The utility model provides a kind of encoder centering installation device on the other aspect, including encoder mounting frame, encoder adapter, rotating shaft and / or rotating shaft adapter, total support and above-mentioned centering piece, wherein:

[0010] The encoder mounting frame is installed on the total support and can be lockably moved relative to the total support, and the moving direction of the encoder mounting frame is perpendicular to the axial direction of the rotating shaft and / or rotating shaft adapter;

[0011] The encoder adapter is installed on the side of the encoder mounting frame close to the rotating shaft and / or rotating shaft adapter, and the encoder adapter can be lockably moved relative to the encoder mounting frame, and the moving direction of the encoder adapter is perpendicular to the axial direction of the rotating shaft and / or rotating shaft adapter and the moving direction of the encoder mounting frame.

[0012] The encoder adapter has a first mounting hole, and the encoder mounting frame has a second mounting hole, the first mounting hole and the second mounting hole are correspondingly and communicatively arranged, and the hole diameter of the first mounting hole is smaller than the hole diameter of the second mounting hole.

[0013] In some embodiments, the encoder mounting frame has a horizontally arranged horizontal mounting plate and a vertically arranged vertical mounting plate arranged on the horizontal mounting plate, the encoder mounting frame is installed on the total support through the horizontal mounting plate, a first movement locking structure is arranged between the horizontal mounting plate and the total support, the encoder adapter is installed on the vertical mounting plate, and a second movement locking structure is arranged between the encoder adapter and the vertical mounting plate.

[0014] In some embodiments, a side surface of the encoder adapter away from the rotating shaft and / or rotating shaft adapter is formed with an annular groove, the annular groove is arranged around the first mounting hole, and the stopper and the encoder stopper can be positioned in the annular groove.

[0015] In some embodiments, the first movement locking structure includes a first slot, a first fixed hole and a first fixed bolt, the first slot is arranged on the horizontal mounting plate and is arranged to extend along the moving direction of the encoder mounting frame, the first fixed hole is arranged on the total support, and the first fixed bolt is connected to the first slot and the first fixed hole.

[0016] In some embodiments, the second mobile locking structure comprises a second strip-shaped hole, a second fixed hole and a second fixed bolt, the second strip-shaped hole is arranged on the vertical mounting plate and extends in the vertical direction, the second fixed hole is arranged on the encoder adapter, and the second fixed bolt is connected to the second strip-shaped hole and the second fixed hole.

[0017] In some embodiments, a plurality of the first mobile locking structures are arranged between the horizontal mounting plate and the total bracket, and the plurality of the first mobile locking structures are arranged in a polygonal shape.

[0018] In some embodiments, a plurality of the second mobile locking structures are arranged between the encoder adapter and the vertical mounting plate, and the plurality of the second mobile locking structures are arranged at intervals around the second mounting hole.

[0019] In some embodiments, the encoder mounting frame further comprises two side plates arranged on the horizontal mounting plate and located on both sides of the vertical mounting plate, and the two side plates can limit the encoder adapter.

[0020] In some embodiments, the encoder centering mounting device comprises a rotating shaft and a rotating shaft adapter, the rotating shaft adapter is mounted on one side of the rotating shaft close to the encoder mounting frame, and the rotating shaft adapter has a connecting shaft for connecting with the encoder, and the connecting shaft is coaxial with the rotating shaft.

[0021] In some embodiments, the connecting shaft has a large-diameter section and a small-diameter section connected coaxially, the large-diameter section is closer to the rotating shaft than the small-diameter section, the shaft hole of the centering piece has a large-diameter hole and a small-diameter hole connected coaxially, the small-diameter hole is closer to the stop portion than the large-diameter hole, the hole diameter of the large-diameter hole is adapted to the outer diameter of the large-diameter section, and the hole diameter of the small-diameter hole is adapted to the outer diameter of the small-diameter section.

[0022] When the above-mentioned centering piece is applied to the installation of a chassis dynamometer encoder, the installation of the chassis dynamometer encoder can be efficiently assisted, the problem that manual centering of the encoder cannot guarantee the centering quality is solved, and the problem that the installation is inconvenient and other components are damaged due to the structural limitation of the chassis dynamometer itself and the space constraint of the encoder installation position is solved. The application of the centering piece can improve the installation efficiency and precision of the encoder centering, thereby shortening the maintenance cycle, reducing the dependence on external maintenance and reducing the maintenance cost, improving the self-maintenance ability of the maintenance team, and improving the efficiency of the test bench operation, and ensuring the stable and good operation of the chassis dynamometer under harsh and complex working conditions.

[0023] Other features and advantages of the present application will be described in detail in the following specific embodiments. Attached Figure Description

[0024] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0025] Figure 1 This is a front view of one embodiment of the centering component in this utility model;

[0026] Figure 2 yes Figure 1 A three-dimensional view of the center-to-center component;

[0027] Figure 3 This is a front view of one embodiment of the rotary shaft adapter in this utility model;

[0028] Figure 4 yes Figure 1 The middle part and Figure 3 A cross-sectional view of the rotating shaft adapters being plugged into each other;

[0029] Figure 5 This is a perspective view of one embodiment of the encoder mounting bracket in this utility model;

[0030] Figure 6 This is a perspective view of one embodiment of the encoder adapter in this utility model;

[0031] Figure 7 yes Figure 6 Main view of the encoder adapter;

[0032] Figure 8 This is a cross-sectional view of the centering component, rotary shaft adapter, encoder mounting bracket, and encoder adapter after assembly in this utility model.

[0033] Figure 9 This is a front view of one embodiment of the coupling in this utility model;

[0034] Figure 10 yes Figure 9 Side view of the coupling;

[0035] Figure 11 This is a cross-sectional view of the encoder, rotary shaft adapter, encoder mounting bracket, encoder adapter, main bracket, and coupling assembled in this utility model.

[0036] Explanation of reference numerals in the attached figures

[0037] 10-Centering component, 11-Cylinder, 12-Shaft hole, 13-Stop part, 14-Operating part;

[0038] 20-encoder mounting bracket, 21-horizontal mounting plate, 211-first slot, 22-vertical mounting plate, 221-second slot, 222-second mounting hole, 23-first fixing bolt, 24-second fixing bolt, 25-side plate;

[0039] 30-encoder adapter, 31-first mounting hole, 32-second mounting hole, 33-annular groove, 34-encoder fixing hole, 35-notch;

[0040] 40-total support;

[0041] 50-rotary shaft adapter, 51-connecting shaft, 52-rotary shaft adapter fixing bolt;

[0042] 60-encoder, 61-encoder fixing bolt;

[0043] 70-coupling, 71-coupling fastening bolt;

[0044] 80-gasket. DETAILED DESCRIPTION

[0045] The embodiments of the present application will be described in further detail below with reference to the drawings. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the present application exemplarily, but cannot be used to limit the scope of the present application, and the present application can be implemented in many different forms, and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0046] The present application provides these embodiments in order to make the present application thorough and complete, and fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specified, the relative arrangement of components and steps, the composition of materials, numerical expressions and values described in these embodiments should be interpreted as merely exemplary, and not as a limitation.

[0047] It should be noted that, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] Further, the terms "first", "second", and similar terms of distinction do not necessarily imply any actual physical or logical relationship or order, but are merely used for convenience of description. "Vertical" is not strictly vertical, but within an error tolerance. "Parallel" is not strictly parallel, but within an error tolerance. "Include" or "contain" and similar terms mean that the elements before the term encompass the elements listed after the term, and do not exclude the possibility of also encompassing other elements.

[0049] It should also be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. When it is described that a specific device is located between the first device and the second device, there can be an intermediate device between the specific device and the first device or the second device, or there can be no intermediate device.

[0050] All terms used in the present application have the same meaning as understood by those skilled in the art to which the present application belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general dictionaries should be interpreted to have meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or excessively formalized sense, unless otherwise explicitly defined herein.

[0051] Techniques, methods, and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the techniques, methods, and devices should be considered as part of the specification.

[0052] The present application provides a centering piece for the centering installation of an encoder and a rotating shaft. Figures 1-2 The centering piece 10 includes a cylindrical body 11, the outer diameter of the cylindrical body 11 is adapted to the hole diameter of the mounting hole (i.e. the first mounting hole 31 described below) of the encoder adapter (i.e. Figure 1 The size B shown is consistent with Figure 7 The size B shown is consistent with

[0053] In the above, it is to be noted that the mounting hole of the encoder adapter is used for mounting the encoder. The hole diameter of the shaft hole 12 is set to be adapted to the outer diameter of the rotating shaft or the connecting shaft of the rotating shaft adapter. It can be understood that, in the case of the rotating shaft adapter, the hole diameter of the shaft hole 12 is set to be adapted to the outer diameter of the connecting shaft of the rotating shaft adapter; in the case of no rotating shaft adapter, the hole diameter of the shaft hole 12 is set to be adapted to the outer diameter of the rotating shaft.

[0054] The centering piece of the utility model, through setting the outer diameter of the cylinder 11 to be adapted to the hole diameter of the mounting hole of the encoder adapter, when the cylinder 11 is inserted into the mounting hole of the encoder adapter, the coaxiality of the cylinder 11 and the encoder adapter can be ensured; through setting the hole diameter of the shaft hole 12 to be adapted to the outer diameter of the rotating shaft or the connecting shaft of the rotating shaft adapter, the rotating shaft or the connecting shaft of the rotating shaft adapter can be coaxially inserted into the shaft hole 12, so that the cylinder 11 and the rotating shaft or the rotating shaft adapter are coaxial, thereby the coaxiality of the centering piece, the encoder adapter and the rotating shaft or the rotating shaft adapter is maintained; through setting the stopper 13, the axial dimension between the encoder adapter and the rotating shaft or the rotating shaft adapter can be positioned, and the installation of the shaft coupling is facilitated.

[0055] In use, after the centering piece is installed in place, the coaxiality of the centering piece, the encoder adapter and the rotating shaft or the rotating shaft adapter is maintained, the positions of the encoder adapter and the rotating shaft or the rotating shaft adapter are fixed, then the centering piece is removed, and the encoder is installed at the position of the centering piece, so that the coaxiality of the encoder, the encoder adapter and the rotating shaft or the rotating shaft adapter is maintained, the centering installation of the encoder is completed, and the technical requirements of the shaft center angle ≤1° and the relative distance between the two shafts less than 0.5mm can be met.

[0056] When the above centering piece is applied to the installation of the chassis dynamometer encoder, the installation of the chassis dynamometer encoder can be efficiently assisted, the problem that the centering quality of the encoder cannot be guaranteed by manual centering according to experience is solved, and the problems of inconvenience in installation and damage to other parts caused by the structural limitations of the chassis dynamometer itself and the space constraints of the encoder installation position are solved. The application of the centering piece can improve the installation efficiency and precision of the encoder centering, thereby shortening the maintenance period, reducing the dependence on external maintenance and reducing maintenance costs, improving the self-maintenance ability of the maintenance team, and improving the efficiency of the test bench operation, and ensuring the stable and good operation of the chassis dynamometer under harsh and complex working conditions.

[0057] In some embodiments, referring to Figure 1 and Figure 2The stopper 13 is a ring-shaped boss radially protruding from the other end of the cylinder 11. The ring-shaped boss can be formed separately from the cylinder 11 and then connected and fixed together, or can be integrally formed. When formed separately, the ring-shaped boss can be formed by a ring arranged around the cylinder 11, or can be formed by a cover plate arranged at the other end of the cylinder 11.

[0058] In order to facilitate the operation of the centering piece during disassembly and assembly, the other end of the cylinder 11 can also be provided with a handle 14 for operating the movement of the centering piece 10.

[0059] In some embodiments, referring to Figure 1 and Figure 2 , the handle 14 is a threaded hole provided at the other end of the cylinder 11 for bolting, and the center axis of the threaded hole coincides with the center axis of the cylinder 11. In use, a bolt can be inserted into the threaded hole, and the centering piece can be moved by applying force to the bolt.

[0060] In some embodiments, referring to Figure 1 , the shaft hole 12 of the centering piece 10 has a large-diameter hole (see Figure 1 ) and a small-diameter hole (see Figure 1 ) coaxially connected, and the small-diameter hole is closer to the stopper 13 than the large-diameter hole. By arranging the shaft hole 12 in the above structure, the shaft hole 12 can be positioned by a stop (see Figure 4 ) with a rotating shaft or a rotating shaft adapter, further ensuring installation accuracy.

[0061] The utility model also provides a kind of encoder centering installation device, including encoder mounting frame 20, encoder adapter 30, rotating shaft and / or rotating shaft adapter 50, total support 40 and centering piece 10. Wherein, encoder mounting frame 20 is installed on total support 40 and can be lockably moved relative to total support 40, the moving direction (see Figure 11 ) of encoder mounting frame 20 vertical to the direction of paper surface is perpendicular to the axial direction (see Figure 11 ) of rotating shaft or rotating shaft adapter;Encoder adapter 30 is installed on the side of encoder mounting frame 20 close to rotating shaft and / or rotating shaft adapter 50, and encoder adapter 30 can be lockably moved relative to encoder mounting frame 20, the moving direction (see Figure 11perpendicular to the axial direction of the rotating shaft and / or the rotating shaft adapter 50 and the moving direction of the encoder mounting rack 20; the encoder adapter 30 has a first mounting hole 31, the encoder mounting rack 20 has a second mounting hole 222, the first mounting hole 31 and the second mounting hole 222 are correspondingly and communicatively arranged, and the hole diameter of the first mounting hole 31 is smaller than the hole diameter of the second mounting hole 222. It can be understood that the axial direction of the first mounting hole 31 and the second mounting hole 222 is the same as the axial direction of the rotating shaft and / or the rotating shaft adapter 50. The encoder adapter 30 is used to mount the encoder 60.

[0062] In the above, by arranging the encoder mounting rack 20 to be lockably movable relative to the general support 40, the position of the encoder mounting rack 20 in the direction perpendicular to the paper can be adjusted in cooperation with the centering piece 10; by arranging the encoder adapter 30 to be lockably movable relative to the encoder mounting rack 20, the position of the encoder mounting rack 20 in the vertical direction can be adjusted in cooperation with the centering piece 10, so that the encoder mounting rack 20 is coaxial with the rotating shaft and / or the rotating shaft adapter 50, and the encoder is accurately centered with the rotating shaft and / or the rotating shaft adapter 50 after being mounted on the encoder mounting rack 20.

[0063] In some embodiments, referring to Figure 5 and Figure 11 , the encoder mounting rack 20 has a horizontally arranged horizontal mounting plate 21 and a vertically arranged vertical mounting plate 22 arranged on the horizontal mounting plate 21, the encoder mounting rack 20 is mounted on the general support 40 through the horizontal mounting plate 21, and a first movement locking structure is arranged between the horizontal mounting plate 21 and the general support 40; the encoder adapter 30 is mounted on the vertical mounting plate 22, and a second movement locking structure is arranged between the encoder adapter 30 and the vertical mounting plate 22. It can be understood that the first movement locking structure is used to realize the locking and releasing of the movement of the encoder mounting rack 20 on the general support 40, that is, the fixing and position adjustment of the encoder mounting rack 20; the second movement locking structure is used to realize the locking and releasing of the movement of the encoder adapter 30 on the encoder mounting rack 20, that is, the fixing and position adjustment of the encoder adapter 30; so as to realize the position adjustment of the encoder. The first movement locking structure and the second movement locking structure can have any appropriate structure, and the structures of the two can be the same or different.

[0064] In some embodiments, referring to Figure 5 and Figure 11The first movable locking structure includes a first slotted hole 211, a first fixing hole (not shown in the figure), and a first fixing bolt 23. The first slotted hole 211 is provided on the horizontal mounting plate 21 and is configured to extend along the moving direction of the encoder mounting bracket 20. The first fixing hole is provided on the main bracket 40. The first fixing bolt 23 connects the first slotted hole 211 and the first fixing hole. In use, the first fixing bolt 23 is loosened, the encoder mounting bracket 20 is moved into place, and then the first fixing bolt 23 is tightened.

[0065] In some implementations, see Figures 5-7 as well as Figure 11 The second movable locking structure includes a second slotted hole 221, a second fixing hole 32, and a second fixing bolt 24. The second slotted hole 221 is provided on the vertical mounting plate 22 and is configured to extend vertically. The second fixing hole 32 is provided on the encoder adapter 30. The second fixing bolt 24 is connected to the second slotted hole 221 and the second fixing hole 32. In use, the second fixing bolt 24 is loosened, the encoder adapter 30 is moved into place, and then the second fixing bolt 24 is tightened.

[0066] It is understandable that the encoder adapter 30 can be adjusted in two mutually perpendicular directions through the first and second moving locking structures, that is, the position adjustment on the plane where the encoder adapter 30 is located, so that the first mounting hole 31 is coaxial with the rotating shaft or the rotating shaft adapter.

[0067] To improve installation stability and accuracy, preferably, multiple first moving locking structures are provided between the horizontal mounting plate 21 and the main support 40, and these multiple first moving locking structures are arranged in a polygonal pattern. For example... Figure 5 As shown, four first moving locking structures are provided between the horizontal mounting plate 21 and the main bracket 40, arranged at the four corners. Preferably, multiple second moving locking structures are provided between the encoder adapter 30 and the vertical mounting plate 22, arranged at intervals around the second mounting hole 222. For example... Figure 5 As shown, four second moving locking structures are provided between the encoder adapter 30 and the vertical mounting plate 22, and the four second moving locking structures are arranged in a four-corner arrangement around the second mounting hole 222.

[0068] like Figure 5 As shown, the encoder mounting bracket 20 may also have two side plates 25, which are disposed on the horizontal mounting plate 21 and located on both sides of the vertical mounting plate 22. The two side plates 25 can limit the encoder adapter 30. Specifically, the two side plates 25 can prevent the encoder adapter 30 from moving relative to the vertical mounting plate 22 in the moving direction of the encoder mounting bracket 20.

[0069] See Figures 6-8 An annular groove 33 is formed on the side of the encoder adapter 30 facing away from the rotating shaft and / or the rotating shaft adapter 50. This annular groove 33 surrounds the first mounting hole 31 (the annular groove 33 is coaxial with the first mounting hole 31) and provides positioning for the stop portion 13 and the encoder 60. The annular groove 33 may be formed as a stepped structure (e.g., ...). Figure 11 As shown), when installing the alignment component, as Figure 8 As shown, the stop portion 13 of the centering component can stop against the bottom surface of the annular groove 33; when installing the encoder 60, as Figure 11 As shown, the annular groove 33 can cooperate with the corresponding part (step structure) of the encoder 60 for stop positioning.

[0070] See Figure 6 , Figure 7 , Figure 11 The encoder adapter 30 also has multiple encoder mounting holes 34, which are used for encoder mounting bolts 61 to pass through and connect the encoder 60, thereby achieving a fixed installation of the encoder 60 and the encoder adapter 30. Figure 6 and Figure 7 As shown, multiple encoder mounting holes 34 can be spaced apart on the bottom surface of the annular groove 33. The encoder adapter 30 can be a plate-like component. To facilitate connection with the encoder mounting bolt 61, the encoder adapter 30 may also have a positioning portion, which may correspond to one of the encoder mounting holes 34. In some embodiments, the positioning portion may be a notch 35, which may be, for example, V-shaped. For installation, see [reference needed]. Figure 7 and Figure 11 The notch 35 faces upwards and corresponds to the position of one of the encoder mounting holes 34.

[0071] In some embodiments, the encoder alignment mounting device includes a rotating shaft and a rotating shaft adapter 50. The rotating shaft adapter 50 is mounted on the side of the rotating shaft near the encoder mounting bracket 20. The rotating shaft adapter 50 has a connecting shaft 51 for connection with the encoder 60, and the central axis of the connecting shaft 51 coincides with the central axis of the rotating shaft. The rotating shaft adapter 50 can be positioned with the rotating shaft via a stop to ensure that they are coaxial. The rotating shaft and the rotating shaft adapter 50 can be fixedly connected by rotating shaft adapter fixing bolts 52.

[0072] Furthermore, in some implementations, such as Figure 3 As shown, the connecting shaft 51 has a large-diameter section that is coaxially connected (see...). Figure 3 (the portion indicated by size A) and the minor diameter segment (see...) Figure 3The large-diameter section is closer to the rotation axis than the small-diameter section, the outer diameter of the large-diameter section is adapted to the hole diameter of the large-diameter hole of the shaft hole 12, and the outer diameter of the small-diameter section is adapted to the hole diameter of the small-diameter hole of the shaft hole 12, that is, the sizes A and C of the shaft hole 12 are consistent with the sizes A and C of the connecting shaft 51 respectively. The connecting shaft 51 and the shaft hole 12 form a shoulder positioning structure.

[0073] The application, structure and design idea of the encoder centering mounting device of the utility model will be further explained and described below in combination with the centering mounting process of the chassis dynamometer encoder with reference to the accompanying drawings.

[0074] The chassis dynamometer encoder mounting technical requirement is that the included angle between the encoder and the chassis dynamometer rotor (i.e. the rotation axis) is less than 1°, and the axial distance is less than 0.5mm, and the two are connected by means of an elastic coupling 70. If the above mounting requirements cannot be met, there is a risk of measurement distortion and damage to hardware.

[0075] Firstly, it is confirmed that the rotation axis adapter 50 is installed reliably and the surface is clean and free of pollution, and the radial runout is confirmed by percentage inspection at the same time, and the measurement value should be less than 0.05mm; if not, the rotation axis adapter 50 needs to be cleaned again and installed again.

[0076] Secondly, the first fixing bolt 23 and the second fixing bolt 24 are loosened, so that the encoder mounting frame 20 and the encoder adapter 30 can be freely moved.

[0077] Thirdly, the centering piece 10 is passed through the mounting holes (i.e. the first mounting hole 31 and the second mounting hole 222) on the encoder mounting frame 20 and the encoder adapter 30 and is positioned in abutment with the rotation axis adapter 50 (the first fixing bolt 23 and the second fixing bolt 24 have been loosened in the second step, so that the encoder adapter 30 can be adjusted to a reasonable position according to the spatial position of the centering piece 10); since the size A and the size C of the centering piece 10 are consistent with the size A and the size C of the rotation axis adapter 50, the structure is similar to a mortise and tenon structure, so that the two are completely concentric and the accuracy is guaranteed; at the same time, since the size B of the encoder adapter 30 is consistent with the size B of the centering piece 10, the two are also concentric, so that the centering piece 10, the encoder adapter 30 and the rotation axis adapter 50 are concentric.

[0078] Fourthly, the second fixing bolt 24 is appropriately pre-tightened, and the reference Figure 8Push the centering piece 10 to the right until its stop part 13 is in close contact with the bottom surface of the annular groove 33 on the encoder adapter 30. Then pull the encoder adapter 30 to the left. Since the second fixing bolt 24 has been properly pre-tightened, when the encoder adapter 30 is pulled to the left, the encoder mounting bracket 20 and the second fixing bolt 24 move to the left together until the encoder adapter 30 is in close contact with the centering piece 10. The purpose of this is to position the axial distance to the appropriate position. Finally, pre-tighten the first fixing bolt 23.

[0079] Fifth, install an M12 bolt at the operating part 14 of the centering component 10. Use the bolt to pull the centering component 10 to the left to confirm that it can move freely axially before pushing it back to the aforementioned position. This is to further confirm that the installation accuracy is sufficient to remove the centering component 10.

[0080] Step 6: Tighten the first fixing bolt 23 and the second fixing bolt 24 to the specified torque. At this time, if... Figure 8 As shown, the encoder alignment has been completed, and the alignment piece 10 is removed with the help of bolts.

[0081] Step 7, as Figure 9 and Figure 10 As shown, the coupling 70 (elastic structure) is locked to the mounting shaft by two coupling fastening bolts 71, with an installation torque of 2 Nm. The coupling 70 is installed onto the encoder 60, maintaining an axial relative distance of approximately 2 mm. Simultaneously, the coupling fastening bolt 71 on the other side of the coupling 70 is loosened to facilitate subsequent installation with the rotary shaft adapter 50.

[0082] Step 8: Install the encoder 60 and coupling 70, which were installed in step 7, into the position of the front alignment piece 10, so that the coupling 70 mates with the rotary shaft adapter 50, and the encoder 60 and encoder adapter 30 are positioned by the stop to ensure axial installation position and concentricity; finally, pass the three bolts through the encoder adapter 30 to connect with the encoder 60, and tighten them to the required torque.

[0083] Step 9: Tighten the coupling fastening bolts 71 at the connection between the coupling 70 and the rotary shaft adapter 50 to the specified torque.

[0084] By following the nine steps above, the encoder 60 and the rotary shaft adapter 50 can be aligned and installed. The installation process is simple. When installing various bolts, shims 80 can be used as shims.

[0085] This utility model has the following advantages:

[0086] High-precision alignment: Ensure that the angle between the encoder shaft and the rotating shaft is ≤1° and the relative distance is less than 0.5mm;

[0087] Quick installation: reduce the disassembly frequency, improve the maintenance efficiency;

[0088] Strong adaptability: suitable for the environment with limited space on site;

[0089] Simple operation: reduce the skill requirement of maintenance personnel;

[0090] Promotion: the device is not only suitable for the maintenance of chassis dynamometer encoder, but also can be popularized to other equipment maintenance scenes which need high-precision centering, such as motor, pump, fan and other rotating equipment centering installation.

[0091] So far, the various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0092] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way.

Claims

1. A centering piece, characterized in that, A centering device (10) for the installation of an encoder with a rotating shaft, the centering device (10) comprising a cylindrical body (11), an outer diameter of the cylindrical body (11) being arranged to be adapted to a hole diameter of a mounting hole of an encoder adapter, one end of the cylindrical body (11) being provided with a shaft hole (12), the shaft hole (12) being coaxial with the cylindrical body (11), a hole diameter of the shaft hole (12) being arranged to be adapted to an outer diameter of a connecting shaft of a rotating shaft or a rotating shaft adapter, the other end of the cylindrical body (11) being provided with a stop portion (13), the stop portion (13) being arranged to be able to stop at a side surface of the encoder adapter away from the rotating shaft or the connecting shaft when the cylindrical body (11) is inserted into the mounting hole and the shaft hole (12) is inserted into the rotating shaft or the connecting shaft.

2. The centering piece of claim 1, wherein, The stop portion (13) is an annular boss radially protruding from the other end of the cylindrical body (11), and / or The other end of the cylindrical body (11) is provided with a manipulating portion (14) for manipulating the movement of the centering device (10).

3. The centering piece of claim 2, wherein, The manipulating portion (14) is a threaded hole provided at the other end of the cylindrical body (11) for bolt connection, the threaded hole being coaxial with the cylindrical body (11).

4. An encoder alignment mounting device, comprising: An encoder installation device comprising an encoder mounting frame (20), an encoder adapter (30), a rotating shaft and / or a rotating shaft adapter (50), a general bracket (40), and the centering device according to any one of claims 1-3, wherein: The encoder mounting frame (20) is mounted on the general bracket (40) and is lockably movable relative to the general bracket (40), a movement direction of the encoder mounting frame (20) being perpendicular to an axial direction of the rotating shaft and / or the rotating shaft adapter (50); The encoder adapter (30) is mounted on a side of the encoder mounting frame (20) close to the rotating shaft and / or the rotating shaft adapter (50), and the encoder adapter (30) is lockably movable relative to the encoder mounting frame (20), a movement direction of the encoder adapter (30) being perpendicular to the axial direction of the rotating shaft and / or the rotating shaft adapter (50) and the movement direction of the encoder mounting frame (20); The encoder adapter (30) has a first mounting hole (31), the encoder mounting frame (20) has a second mounting hole (222), the first mounting hole (31) and the second mounting hole (222) are arranged to be in communication in correspondence, and a hole diameter of the first mounting hole (31) is smaller than a hole diameter of the second mounting hole (222).

5. The encoder centering installation device according to claim 4, wherein The encoder mounting frame (20) has a horizontal mounting plate (21) arranged horizontally and a vertical mounting plate (22) arranged vertically on the horizontal mounting plate (21), the encoder mounting frame (20) is mounted on the total bracket (40) through the horizontal mounting plate (21), a first movement locking structure is arranged between the horizontal mounting plate (21) and the total bracket (40), the encoder adapter (30) is mounted on the vertical mounting plate (22), and a second movement locking structure is arranged between the encoder adapter (30) and the vertical mounting plate (22); and / or An annular groove (33) is formed on a side surface of the encoder adapter (30) away from the rotation shaft and / or the rotation shaft adapter (50), the annular groove (33) is arranged around the first mounting hole (31), and the stop portion (13) and the encoder (60) can be stopped and positioned in the annular groove (33).

6. The encoder centering mounting device according to claim 5, characterized in that, The first movement locking structure comprises a first slot (211), a first fixing hole and a first fixing bolt (23), the first slot (211) is arranged on the horizontal mounting plate (21) and extends in the movement direction of the encoder mounting frame (20), the first fixing hole is arranged on the total bracket (40), and the first fixing bolt (23) is connected to the first slot (211) and the first fixing hole; and / or The second movement locking structure comprises a second slot (221), a second fixing hole (32) and a second fixing bolt (24), the second slot (221) is arranged on the vertical mounting plate (22) and extends in the vertical direction, the second fixing hole (32) is arranged on the encoder adapter (30), and the second fixing bolt (24) is connected to the second slot (221) and the second fixing hole (32).

7. The encoder centering mounting device according to claim 5, characterized in that, A plurality of the first movement locking structures are arranged between the horizontal mounting plate (21) and the total bracket (40), and the plurality of the first movement locking structures are arranged in a polygonal shape; and / or A plurality of the second movement locking structures are arranged between the encoder adapter (30) and the vertical mounting plate (22), and the plurality of the second movement locking structures are arranged in a polygonal shape around the second mounting hole (222).

8. The encoder alignment device of claim 5, wherein, The encoder mounting frame (20) further has two side plates (25) arranged on the horizontal mounting plate (21) and located on both sides of the vertical mounting plate (22), and the two side plates (25) can limit the encoder adapter (30).

9. The encoder pair centering device of any one of claims 4-8, wherein, The encoder mounting device comprises a rotating shaft and a rotating shaft adapter (50), the rotating shaft adapter (50) is mounted on the side of the rotating shaft close to the encoder mounting frame (20), the rotating shaft adapter (50) has a connecting shaft (51) for connecting with the encoder (60), and the connecting shaft (51) is coaxial with the rotating shaft.

10. The encoder alignment device of claim 9, wherein, The connecting shaft (51) has a large-diameter section and a small-diameter section which are coaxially connected, and the large-diameter section is closer to the rotating shaft than the small-diameter section; the shaft hole (12) of the centering piece (10) has a large-diameter hole and a small-diameter hole which are coaxially connected, and the small-diameter hole is closer to the stop portion (13) than the large-diameter hole, the hole diameter of the large-diameter hole is adapted to the outer diameter of the large-diameter section, and the hole diameter of the small-diameter hole is adapted to the outer diameter of the small-diameter section.

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