Positioning device suitable for encoder
By designing a positioning device including a shaft cushioning part, a shaft cushioning part and an elastic rod, the impact problem of the encoder when the axial rushes by the equipment under test is solved, and the stable installation and synchronous movement of the encoder is achieved, which extends the service life and improves the detection accuracy.
Patent Information
- Application Number
- CN202421500805.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-28
AI Technical Summary
Existing encoders are susceptible to excessive instantaneous axial impact when the axial squirt of the equipment under test, causing deformation or breakage of the fixed bracket, affecting the detection accuracy and equipment stability.
A positioning device including a shaft cushioning portion, a counter shaft portion and an elastic rod is designed. The shaft cushioning part buffers the axial movement of the measured device through a buffer mechanism to ensure that the encoder moves simultaneously; the shaft part ensures that the connecting shaft of the encoder coincides with the axis center line of the measured shaft through a square plate and an adjustment mechanism; the elastic rod removes the radial strobe force to protect the encoder.
Effectively buffer the axial movement of the measured equipment, reduce damage to the encoder, ensure stable installation and synchronous movement of the encoder, extend the service life of the encoder and improve detection accuracy.
Smart Images
Figure CN222671103U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a positioning device, in particular to a device capable of positioning an encoder and reliably connecting the encoder with a device under test, belonging to the technical field of encoder equipment. Background Art
[0002] An encoder is a sensing device that provides feedback. It can convert motion into electrical signals that can be read by a certain type of control device in a motion control system, and is used to determine the position, count, speed or direction of motion of the object being measured. Existing encoders are fixed to the device being measured through a fixed bracket installed at the bottom, and the connecting shaft of the encoder is fixed to the rotating shaft of the device being measured. Therefore, there is often a coaxiality error between the encoder and the device being measured after installation, or the encoder may move axially with the rotating shaft of the device being measured due to equipment wear. Therefore, the fixed bracket that fixes the encoder often deforms or even breaks when subjected to axial force for a long time, causing errors or even inaccurate detection in the encoder's detection, affecting the stability and control accuracy of the equipment. Therefore, a positioning device is needed, which is required to be able to move synchronously with the movement of the device being measured to a certain extent, thereby reducing the damage caused by hard contact. Utility Model Content
[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a positioning device suitable for an encoder, which can ensure that the encoder is reliably connected to a device under test and reduce the damage to the encoder and a device for fixing the encoder when the device under test moves.
[0004] The problem described in the utility model is solved by the following technical solutions:
[0005] A positioning device suitable for an encoder, comprising a shaft-movement buffer part, a shaft-matching part and an elastic rod; the shaft-movement buffer part is arranged on the housing of a device under test; the shaft-matching part is arranged on the shaft-movement buffer part; the encoder is arranged on the shaft-matching part; an elastic rod is connected between the end of the connecting shaft of the encoder and the center of the shaft end face of the device under test; the shaft-movement buffer part comprises two buffer mechanisms, and the two buffer mechanisms are arranged opposite to each other on the housing of the device under test; the buffer mechanism comprises a base, a guide rod, a slider and a connecting plate; the base is arranged on the housing of the device under test; the number of the guide rods is two, and they are symmetrically arranged at both ends of the base; sliders are arranged at both ends of the connecting plate, and the sliders on both sides are symmetrically slidably arranged on the guide rods on both sides.
[0006] The above-mentioned positioning device is suitable for the encoder, and the shaft part includes a square plate and an adjustment mechanism; the square plate is arranged between the connecting plates on both sides; a square hole is arranged in the center of the square plate; and the adjustment mechanism is arranged on the end face of the square plate away from the device under test.
[0007] The positioning device is suitable for the encoder, wherein the axis center line of the guide rod is parallel to the axis center line of the measured shaft of the measured device; and the plane of the square plate is perpendicular to the axis center line of the measured shaft of the measured device.
[0008] The above-mentioned positioning device suitable for the encoder, the adjustment mechanism includes a long plate, a slide plate, a support plate and a connecting column; the two ends of the upper end surface of the square plate are symmetrically provided with slide rails, and the slide grooves at the two ends of the bottom end surface of the long plate are slidably arranged on the slide rails at the two ends of the square plate; the end of the long plate is provided with a vertical threaded hole, and the bolt passes through the threaded hole of the long plate and presses on the square plate; the long plate is provided with strip holes along its length direction; the slide plate is slidably arranged on the upper end surface of the long plate; the support plate is arranged on the side wall of the slide plate, and the support plate contacts the side wall of the long plate; the support plate is provided with a threaded hole, and the bolt passes through the threaded hole of the support plate and presses on the side wall of the long plate; the connecting column is arranged at the bottom end of the slide plate, and the connecting column passes through the central strip hole of the long plate; the top end of the encoder shell is connected to the bottom end of the connecting column.
[0009] The above positioning device is suitable for an encoder, wherein the axis centerline of the connecting shaft of the encoder coincides with the axis centerline of the elastic rod; and the axis centerline of the elastic rod coincides with the axis centerline of the measured shaft of the measured device.
[0010] The utility model effectively buffers the axial movement of the measured device through the shaft movement buffer part, so that the encoder can move axially along with the measured device when the measured device moves axially, avoiding excessive instantaneous axial impact; through the shaft part, it is ensured that the connecting shaft of the encoder can coincide with the axis center line of the measured shaft in the installed state; the elastic rod can remove a part of the radial movement of the measured shaft, thereby ensuring the safety of the encoder. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.
[0012] The list of numbers in the figure is: 1. elastic rod, 2. base, 3. guide rod, 4. slider, 5. connecting plate, 6. square plate, 7. long plate, 8. slide plate, 9. support plate, 10. connecting column, 11. encoder. DETAILED DESCRIPTION
[0013] See also Figure 1The utility model includes a shaft-movement buffer part, a shaft-matching part and an elastic rod 1; the shaft-movement buffer part is arranged on the housing of the measured device; the shaft-matching part is arranged on the shaft-movement buffer part; an encoder 11 is arranged on the shaft-matching part; an elastic rod 1 is connected between the connecting shaft end of the encoder 11 and the center of the shaft end face of the measured device; the elastic rod 1 can eliminate a part of the radial movement force of the measured shaft.
[0014] The shaft movement buffer part includes two buffer mechanisms, and the two buffer mechanisms are arranged opposite to each other on the shell of the device under test; the buffer mechanism includes a base 2, a guide rod 3, a slider 4 and a connecting plate 5; the base 2 is arranged on the shell of the device under test; the number of the guide rods 3 is two, and they are symmetrically arranged at both ends of the base 2; sliders 4 are arranged at both ends of the connecting plate 5, and the sliders 4 on both sides are symmetrically slidably arranged on the guide rods 3 on both sides; the connecting plate 5 moves along the length direction of the guide rod 3 under the guidance of the slider 4, thereby guiding the movement of the encoder, ensuring that the encoder can reliably move synchronously with the axial movement of the measured shaft, and avoiding the axial movement of the measured shaft hard contact and collision with the encoder connecting shaft to cause damage.
[0015] The axis-matching part comprises a square plate 6 and an adjustment mechanism; the square plate 6 is arranged between the connecting plates 5 on both sides; a square hole is arranged at the center of the square plate 6; and the adjustment mechanism is arranged on the end face of the square plate 6 away from the device under test.
[0016] The axis line of the guide rod 3 is parallel to the axis line of the measured shaft of the measured device; this ensures that the encoder can move synchronously with the axial movement of the measured shaft; the guide rod 3 guides smoothly in this process; the plane of the square plate 6 is perpendicular to the axis line of the measured shaft of the measured device.
[0017] The adjustment mechanism includes a long plate 7, a slide plate 8, a support plate 9 and a connecting column 10; slide rails are symmetrically arranged at both ends of the upper end surface of the square plate 6, and the slide grooves at both ends of the bottom end surface of the long plate 7 are slidably arranged on the slide rails at both ends of the square plate 6; the long plate 7 can slide under the guidance of the slide rails, and the slide plate 8 slides on the long plate 7, so as to smoothly adjust the position of the encoder to ensure that the axis center line of its connecting shaft can coincide with the axis center line of the measured shaft; a vertical threaded hole is arranged at the end of the long plate 7, and a bolt passes through the threaded hole of the long plate 7 and presses on the square plate 6; the position of the long plate 7 can be fixed by tightening the bolt on the long plate 7; the long plate 7 is provided with strip holes along its length direction ; The slide plate 8 is slidably arranged on the upper end surface of the long board 7; the support plate 9 is arranged on the side wall of the slide plate 8, and the support plate 9 contacts the side wall of the long board 7; a threaded hole is arranged on the support plate 9, and the bolt passes through the threaded hole of the support plate 9 and presses on the side wall of the long board 7; tightening the bolt on the support plate 9 can fix the position of the slide plate 8 relative to the long board 7; the connecting column 10 is arranged at the bottom end of the slide plate 8, and the connecting column 10 passes through the central strip hole of the long board 7; the top end of the shell of the encoder 11 is connected to the bottom end of the connecting column 10; by adjusting the position of the slide plate 8 and the long board 7, and then adjusting the position of the encoder, it is finally ensured that the axis center line of the encoder can coincide with the axis center line of the measured axis.
[0018] The axis center line of the connecting shaft of the encoder 11 coincides with the axis center line of the elastic rod 1 ; the axis center line of the elastic rod 1 coincides with the axis center line of the measured shaft of the measured device.
[0019] Principle of use: During installation, adjust the positions of the long board 7 and the slide board 8 until the axis of the encoder is aligned with the axis of the measured shaft, and then tighten the bolts to fix the relative position of the encoder and the square plate 6; during use, the encoder monitors the measured shaft of the measured device in real time; when axial movement is found in the measured shaft, the encoder moves along with the movement, and the square plate 6 slides under the guidance of the surrounding guide rods 3, thereby ensuring that the encoder moves synchronously in one direction with the movement of the measured shaft; the elastic rod 1 has a certain deformation ability. When the measured shaft moves radially, part of the radial force is offset by the elastic rod 1, which avoids the encoder's connecting shaft from being subjected to excessive instantaneous radial force, thereby extending the service life of the encoder.
Claims
1. A positioning device suitable for an encoder, characterized in that: The invention comprises a shaft-displacement buffer part, a shaft-matching part and an elastic rod (1); the shaft-displacement buffer part is arranged on the housing of the device under test; the shaft-matching part is arranged on the shaft-displacement buffer part; an encoder (11) is arranged on the shaft-matching part; an elastic rod (1) is connected between the connecting shaft end of the encoder (11) and the center of the shaft end face of the device under test; the shaft-displacement buffer part comprises two buffer mechanisms, and the two buffer mechanisms are arranged on the housing of the device under test opposite to each other; the buffer mechanism comprises a base (2), a guide rod (3), a slider (4) and a connecting plate (5); the base (2) is arranged on the housing of the device under test; the number of the guide rods (3) is two, and they are symmetrically arranged at both ends of the base (2); sliders (4) are arranged at both ends of the connecting plate (5), and the sliders (4) on both sides are symmetrically slidably arranged on the guide rods (3) on both sides.
2. The positioning device suitable for an encoder according to claim 1, characterized in that: The axis-matching part comprises a square plate (6) and an adjustment mechanism; the square plate (6) is arranged between the connecting plates (5) on both sides; a square hole is arranged at the center of the square plate (6); and the adjustment mechanism is arranged on the end surface of the square plate (6) away from the device to be tested.
3. The positioning device suitable for an encoder according to claim 2, characterized in that: The axis center line of the guide rod (3) is parallel to the axis center line of the measured axis of the measured device; and the plane of the square plate (6) is perpendicular to the axis center line of the measured axis of the measured device.
4. The positioning device suitable for an encoder according to claim 3, characterized in that: The adjustment mechanism comprises a long plate (7), a slide plate (8), a support plate (9) and a connecting column (10); slide rails are symmetrically arranged at both ends of the upper end surface of the square plate (6), and the slide grooves at both ends of the bottom end surface of the long plate (7) are slidably arranged on the slide rails at both ends of the square plate (6); a vertical threaded hole is arranged at the end of the long plate (7), and a bolt passes through the threaded hole of the long plate (7) and contacts the square plate (6); the long plate (7) is provided with strip holes along its length direction; the slide plate (8) slides The support plate (9) is arranged on the upper end surface of the long plate (7); the support plate (9) is arranged on the side wall of the slide plate (8), and the support plate (9) contacts the side wall of the long plate (7); a threaded hole is arranged on the support plate (9), and a bolt passes through the threaded hole of the support plate (9) and presses on the side wall of the long plate (7); the connecting column (10) is arranged at the bottom end of the slide plate (8), and the connecting column (10) passes through the central strip hole of the long plate (7); the top end of the housing of the encoder (11) is connected to the bottom end of the connecting column (10).
5. The positioning device suitable for an encoder according to claim 4, characterized in that: The axis center line of the connecting shaft of the encoder (11) coincides with the axis center line of the elastic rod (1); and the axis center line of the elastic rod (1) coincides with the axis center line of the measured shaft of the measured device.