A speed detection device and indexing plate speed accuracy detection system

Abstract

The present invention provides a rotation speed detection device and a dividing plate rotation speed accuracy detection system. It relates to the field of rotation speed detection. The rotation speed detection device comprises: a sliding frame, a mounting plate, a rotation speed sensor and a distance measuring part. The mounting plate is slidably mounted on the sliding frame; the distance measuring part is rotatably mounted on the mounting plate, and a scale value is set on the distance measuring part. When determining the installation spacing between the rotation speed sensor and the part to be measured, the rotation distance measuring part is arranged in parallel with the rotation speed sensor, and the rotation speed sensor is rotated to move the rotation speed sensor toward the resisting end of the distance measuring part, and the distance between the detection end of the rotation speed sensor and the stopping end of the distance measuring part is the installation distance; then the mounting plate is driven to move toward the part to be measured, so that the stopping end of the distance measuring part abuts against the part to be measured. At this time, the distance between the rotation speed sensor and the part to be measured is the installation spacing, and the operation of determining the installation distance of the rotation speed sensor is simple and convenient.

Description

Technical Field

[0001] The invention relates to the field of rotational speed detection, and in particular to a rotational speed detection device and a rotational speed accuracy detection system for a dividing plate. Background Art

[0002] Speed ​​measurement refers to a measurement system that measures the rotational speed of an object. Speed ​​measurement is used in many fields, such as motors, fans, pumps, wheels, indexing plates, etc. The indexing plate is a machine tool accessory that clamps the workpiece on the chuck or between two centers and rotates, indexes and positions it. The rotation of the indexing plate usually needs to maintain a certain accuracy and stability. Speed ​​detection can be used to monitor the actual speed of the indexing plate. By detecting the speed of the indexing plate, it can be ensured that it runs at the predetermined speed to ensure processing accuracy and quality.

[0003] The installation of the rotation speed measuring equipment includes non-contact ones, such as Hall speed sensors. For speed sensors that can be installed non-contact, it is necessary to determine the installation distance between the sensor and the object to be measured according to the installation instructions during installation. Currently, when installing such speed sensors, it is necessary to use distance measuring equipment to determine the installation spacing. The installation distance is included in several millimeters. The staff uses the distance measuring equipment to measure the distance while adjusting the installation distance of the speed sensor, which is inconvenient to operate.

[0004] Therefore, it is necessary to provide a rotation speed detection device and a dividing plate rotation speed accuracy detection system to solve the above technical problems. Summary of the invention

[0005] The invention provides a rotation speed detection device, which solves the problem that when installing a speed sensor, it is necessary to use distance measuring equipment to determine the installation distance, which makes the installation operation inconvenient.

[0006] In order to solve the above technical problems, the present invention provides a rotation speed detection device, comprising: a sliding frame;

[0007] A mounting plate, the mounting plate being slidably mounted on the sliding frame;

[0008] A rotation speed sensor, wherein the rotation speed sensor is provided with a threaded surface, and the rotation speed sensor is threadedly mounted on the mounting plate;

[0009] A distance measuring member, the distance measuring member is rotatably mounted on the mounting plate, and a scale value is set on the distance measuring member;

[0010] A fixing member, the fixing member is used to limit the position of the mounting plate relative to the sliding frame;

[0011] When determining the installation distance between the rotation speed sensor and the object to be measured, the distance measuring member is arranged in parallel with the rotation speed sensor, and the rotation speed sensor is rotated to move the rotation speed sensor toward the resisting end of the distance measuring member, and the distance between the detection end of the rotation speed sensor and the resisting end of the distance measuring member is the installation distance;

[0012] Then, the mounting plate is driven to move toward the object to be measured, so that the abutting end of the distance measuring member abuts against the object to be measured. At this time, the distance between the rotation speed sensor and the object to be measured is the mounting spacing.

[0013] Preferably, the sliding frame comprises a bracket and a plurality of sliding rods, the plurality of sliding rods are installed on the bracket at intervals, and the mounting plate is sleeved on the sliding rods.

[0014] Preferably, the rotation speed detection device also includes a calibration piece, which includes a calibration sleeve, a spherical connector and a calibration plate. The calibration sleeve is mounted on the distance measuring piece and is slidably connected to the distance measuring piece. The calibration plate is rotatably mounted on the bottom of the calibration sleeve through a spherical connector.

[0015] Preferably, the fixing member includes a connecting rod, a fixing block and a square shaft, the connecting rod passes through the mounting plate and is threadedly connected to the mounting plate, the fixing block is installed at the bottom end of the connecting rod, and the square shaft is installed at the top end of the connecting rod.

[0016] Preferably, a groove is formed on the top of the mounting plate, and the distance measuring member is located inside the groove.

[0017] Preferably, the distance measuring member comprises a connecting sleeve, a distance measuring plate and a stop member, the distance measuring plate is mounted on the square shaft through the connecting sleeve, the stop member is vertically mounted on one end of the distance measuring plate away from the connecting sleeve, and the scale value is set on the distance measuring plate.

[0018] Preferably, the stop member comprises a stop plate and a pulley, one end of the stop plate is mounted on the distance measuring plate, and the pulley is rotatably mounted on the other end of the stop plate.

[0019] Preferably, an assembly hole is formed on the mounting plate, a first nut is fixedly mounted on one side of the mounting plate, and the first nut is concentrically arranged with the assembly hole;

[0020] The rotation speed detection device further comprises a second nut, which is threadedly connected to the rotation speed sensor and abuts against the mounting plate.

[0021] Preferably, the rotation speed detection device further comprises a limit arm, one end of which is mounted on the distance measuring plate, a plurality of positioning grooves are arranged around the second nut, and the other end of the limit arm is inserted into an interior of one of the positioning grooves.

[0022] The present invention also provides a rotating speed accuracy detection system for a dividing plate, comprising a data acquisition module, an analysis and display module and the rotating speed detection device;

[0023] Wherein, the rotation speed detection device, the acquisition module and the analysis and display module are signal-connected in sequence.

[0024] Compared with the related art, the rotation speed detection device provided by the present invention has the following beneficial effects:

[0025] The invention provides a rotation speed detection device and a rotating disk rotation speed accuracy detection system. When determining the installation spacing between a rotation speed sensor and a workpiece to be measured, a rotating distance measuring part is arranged in parallel with the rotation speed sensor, and the rotation speed sensor is rotated to make the rotation speed sensor move toward the resisting end of the distance measuring part, and the distance between the detection end of the rotation speed sensor and the stopping end of the distance measuring part is the installation distance; then the mounting plate is driven to move toward the workpiece to be measured, so that the stopping end of the distance measuring part abuts against the workpiece to be measured. At this time, the distance between the rotation speed sensor and the workpiece to be measured is the installation spacing, and the operation of determining the installation distance of the rotation speed sensor is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of the rotation speed detection device provided by the present invention from a front view;

[0027] Figure 2 A schematic structural diagram of a rotation speed detection device provided by the present invention from a back view;

[0028] Figure 3 A cross-sectional view of a mounting plate provided by the present invention;

[0029] Figure 4 for Figure 3 An enlarged schematic diagram of part B is shown;

[0030] Figure 5 for Figure 1 An enlarged schematic diagram of part A is shown;

[0031] Figure 6 The schematic diagram of the working principle of the distance measuring device provided by the present invention, wherein: Figure 6 (a) is a schematic diagram of lifting the rangefinder plate out of the groove. Figure 6 (b) is a schematic diagram of the distance measuring plate rotating to be parallel to the speed sensor. Figure 6 (c) is a schematic diagram of the calibration plate rotating to overlap with the speed sensor;

[0032] Figure 7 A schematic diagram of the rotation speed sensor provided by the present invention being adjusted to a distance between the rotation speed sensor and the stop end of the distance measuring member being the installation distance;

[0033] Figure 8A schematic diagram of the installation of the rotation speed detection device and the indexing plate provided by the present invention;

[0034] Fig. 9 This is a principle block diagram of the indexing plate speed accuracy detection system provided by the present invention.

[0035] Numbers in the figure:

[0036] 1. Sliding rack; 101. Bracket; 102. Sliding rod;

[0037] 2. Mounting plate; 21. First nut; 22. Assembly hole; 23. Groove;

[0038] 3. Speed ​​sensor; 31. Thread surface;

[0039] 4. Distance measuring member; 41. Connecting sleeve; 42. Distance measuring plate; 43. Stop member;

[0040] 421, slide rail; 431, stop plate; 432, pulley;

[0041] 5. Fixing piece; 51. Connecting rod; 52. Fixing block; 53. Square shaft; 54. Nut;

[0042] 6. Calibration parts; 61. Calibration sleeve; 62. Spherical connector; 63. Calibration plate; 611. Calibration line;

[0043] 7. Limiting arm;

[0044] 8. second nut; 81. positioning groove;

[0045] 9. Indexing plate. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] The invention provides a rotation speed detection device.

[0048] Please refer to Figure 1 and Figure 2 , In one embodiment of the present invention, the rotation speed detection device comprises: a sliding frame 1;

[0049] A mounting plate 2, wherein the mounting plate 2 is slidably mounted on the sliding frame 1;

[0050] A rotation speed sensor 3, wherein a threaded surface 31 is provided on the rotation speed sensor 3, and the rotation speed sensor 3 is threadedly mounted on the mounting plate 2;

[0051] A distance measuring member 4, the distance measuring member 4 is rotatably mounted on the mounting plate 2, and a scale value is set on the distance measuring member 4;

[0052] A fixing member 5, the fixing member 5 is used to limit the position of the mounting plate 2 relative to the sliding frame 1;

[0053] When determining the installation distance between the speed sensor 3 and the object to be measured, the distance measuring member 4 is arranged parallel to the speed sensor 3, and the speed sensor 3 is rotated to move the speed sensor 3 toward the resisting end of the distance measuring member 4, and the distance between the detection end of the speed sensor 3 and the resisting end of the distance measuring member 4 is the installation distance;

[0054] Then, the mounting plate 2 is driven to move toward the object to be measured, so that the abutting end of the distance measuring member 4 abuts against the object to be measured. At this time, the distance between the rotation speed sensor 3 and the object to be measured is the installation spacing.

[0055] According to the different parts to be tested, the sliding frame 1 can be installed on the housing of the part to be tested or installed on a work surface or the ground and arranged adjacent to the part to be tested.

[0056] When determining the detection distance between the speed sensor 3 and the workpiece to be measured, since the mounting plate 2 and the sliding frame 1 are slidably connected, the distance between the mounting plate 2 and the workpiece to be measured can be adjusted to have a certain distance, which is convenient for the subsequent installation operation of the speed sensor 3. The speed sensor 3 is then threadedly connected to the mounting plate 2, and the distance measuring component 4 is adjusted to be parallel to the speed sensor 3. The speed sensor 3 is continued to be screwed, and according to the scale value on the distance measuring component 4, the distance between the detection end of the speed sensor 3 and the stopping end of the distance measuring component 4 is made to be the distance required for installation. The mounting plate 2 is then moved to drive the speed sensor 3 and the distance measuring component 4 to move toward the workpiece to be measured, so that the stopping end of the distance measuring component 4 abuts against the workpiece to be measured. At this time, the distance between the speed sensor 3 and the workpiece to be measured is the required installation distance. The position of the mounting plate 2 is then limited by the fixing component 5, and the distance measuring component 4 is rotated ninety degrees and retracted. The operation of determining the installation distance of the speed sensor 3 is simple and convenient.

[0057] The stopping end of the distance measuring member 4 is the end that first contacts the object to be measured when the distance measuring member 4 is parallel to the rotation speed sensor 3 and when the mounting plate 2 moves toward the object to be measured.

[0058] See also Figure 1 In the embodiment, the sliding frame 1 includes a bracket 101 and a plurality of sliding rods 102 , the plurality of sliding rods 102 are installed on the bracket 101 at intervals, and the mounting plate 2 is sleeved on the sliding rods 102 .

[0059] The mounting plate 2 slides along the slide rod 102 , thereby forming a sliding assembly with the slide frame 1 .

[0060] In this embodiment, there are two sliding bars 102 , which are installed on both sides of the bracket 101 .

[0061] In other embodiments, the sliding frame 1 includes a bracket 101 and a plurality of rails, the plurality of rails are installed on the bracket 101 at intervals, and the bottom of the mounting plate 2 is mounted on the rails through a sliding sleeve to form a sliding connection.

[0062] See also Figures 2 to 4 As a preferred embodiment of this embodiment, the rotation speed detection device also includes a calibration component 6, which includes a calibration sleeve 61, a spherical connector 62 and a calibration plate 63. The calibration sleeve 61 is sleeved on the distance measuring component 4 and is slidably connected to the distance measuring component 4. The calibration plate 63 is rotatably mounted on the bottom of the calibration sleeve 61 through the spherical connector 62.

[0063] By setting the calibration member 6, when determining that the distance between the detection end of the speed sensor 3 and the stop end of the distance measuring member 4 is the installation spacing, firstly, the calibration sleeve 61 can be moved to the corresponding scale value, and the calibration plate 63 can be rotated to a plane perpendicular to the distance measuring member 4, and the calibration plate 63 and the speed sensor 3 have an overlapping portion, such as Figure 6 In (c), the speed sensor 3 is subsequently twisted so that its detection end abuts against the calibration plate 63. At this time, the distance between the speed sensor 3 and the abutting end of the distance measuring component 4 is the installation distance, so that it can be more clearly determined that the speed sensor 3 moves to correspond to the target scale value on the distance measuring component 4 without any visual deviation.

[0064] For example, when it is necessary to adjust the distance between the speed sensor 3 and the test piece to be 3 mm, that is, first adjust the detection end of the speed sensor 3 to move to the position where the scale value on the distance measuring piece 4 is 3 mm, by setting the calibration piece 6, moving the calibration piece 6 to the position of the 3 mm scale in advance, and then adjusting the detection end of the speed sensor 3 to abut against the calibration plate 63 of the calibration piece 6, it can be accurately determined that the distance between the detection end of the speed sensor 3 and the stop end of the distance measuring piece 4 is 3 mm, which is the required installation distance.

[0065] By providing the spherical connector 62, the calibration plate 63 can be rotated in multiple directions;

[0066] In this embodiment, the calibration plate 63 is connected to the spherical connector 62 through a connecting shaft. The spherical connector 62 is embedded in the bottom of the calibration sleeve 61. A cross-shaped slide groove is opened at the bottom of the calibration sleeve 61. The connecting shaft can rotate along the cross-shaped slide groove, and the connecting shaft can only rotate ninety degrees along any of the cross-shaped slide grooves, thereby ensuring that the calibration plate 63 can be rotated to ninety degrees with the distance measuring part 4.

[0067] The surface of the spherical connector 62 is covered with a rubber sleeve to increase the friction between the spherical connector 62 and the calibration sleeve 61, so that after the calibration plate 63 is rotated to a certain angle, it can stably maintain the current angle when no external force is applied.

[0068] Please refer to Figure 7 The calibration sleeve 61 is provided with a calibration line 611 .

[0069] By setting the calibration line 611, when the calibration sleeve 61 moves to the area where the scale value is set on the distance measuring component 4, the calibration sleeve 61 can adjust its position to make the calibration line 611 coincide with the scale line corresponding to the scale value, so that the scale value corresponding to the position where the calibration sleeve 61 moves can be better determined.

[0070] The calibration plate 63 that is perpendicular to the distance measuring member 4 is rotated until the side facing the rotation speed sensor 3 is flush with the calibration line 611 , that is, the rotation speed sensor 3 is aligned with the calibration line 611 when abutting against the calibration plate 63 .

[0071] See also Figure 3 In this embodiment, the fixing member 5 includes a connecting rod 51, a fixing block 52 and a square shaft 53. The connecting rod 51 passes through the mounting plate 2 and is threadedly connected to the mounting plate 2. The fixing block 52 is installed at the bottom end of the connecting rod 51, and the square shaft 53 is installed at the top end of the connecting rod 51.

[0072] When the mounting plate 2 needs to be limited, the connecting rod 51 is screwed through the square shaft 53, and the connecting rod 51 moves downward through the action of the thread, and pushes the fixing block 52 to move downward and abut against the bracket 101, and tighten, thereby achieving the limitation of the mounting plate 2.

[0073] Preferably, an anti-skid pad is installed at the bottom of the fixing block 52 to increase the friction with the bracket 101 and improve the stability of the limit. The anti-skid pad can be a rubber pad, a cloth pad, a leather pad, etc.

[0074] The fixing block 52 is preferably rotatably connected to the connecting rod 51 , so that when the connecting rod 51 rotates, the fixing block 52 does not need to rotate with it, but only needs to descend with it and abut against the bracket 101 .

[0075] See also Figure 2A nut 54 is installed at the bottom of the mounting plate 2, and the bottom end of the connecting rod 51 passes through the nut 54 and is threadedly connected with the nut 54. The surface of the corresponding connecting rod 51 is provided with threads.

[0076] In other embodiments, the fixing member 5 includes a positioning rod and a knob. The positioning rod passes through the mounting plate 2 and is threadedly connected to the mounting plate 2. The knob is installed at the top of the positioning rod. The bracket 101 has a plurality of positioning holes correspondingly provided thereto, and the plurality of positioning holes are arranged according to several conventional installation distances. When the mounting plate 2 is moved to the corresponding position, the positioning rod is turned by the knob, and the rod is moved down and inserted into the positioning hole through the action of the thread to realize the limiting function.

[0077] See also Figures 1 to 3 A groove 23 is provided on the top of the mounting plate 2, the distance measuring member 4 is located inside the groove 23, and the square shaft 53 is located inside the groove 23. By storing the distance measuring member 4 and the like inside the groove 23, the overall aesthetics of the device is improved.

[0078] See also Figures 1 to 3 In this embodiment, the distance measuring member 4 includes a connecting sleeve 41, a distance measuring plate 42 and a stop member 43. The distance measuring plate 42 is sleeved on the square shaft 53 through the connecting sleeve 41. The stop member 43 is vertically installed at one end of the distance measuring plate 42 away from the connecting sleeve 41. The scale value is set on the distance measuring plate 42.

[0079] Please refer to Figure 6 (a) and Figure 6 (b) and Figure 7 When the distance measuring member 4 enters the distance measuring state, the distance measuring plate 42 is lifted up to move out of the groove 23, the connecting sleeve 41 moves up along the square shaft 53, and is still sleeved on the square shaft 53, and then rotates ninety degrees along the pointer to make the distance measuring plate 42 parallel to the speed sensor 3. At this time, the connecting sleeve 41 drives the connecting rod 51 to rotate through the square shaft 53, and the connecting rod 51 moves up through the thread, and drives the fixing block 52 to move up with it. At this time, there is a gap between the fixing block 52 and the bracket 101, that is, there is no tight contact between the fixing block 52 and the bracket 101, and the mounting plate 2 can be moved at this time.

[0080] After the installation distance of the speed sensor 3 relative to the end of the distance measuring plate 42 is adjusted, the installation plate 2 is moved to make the abutting end of the abutting member 43 abut against the object to be measured, that is, the installation position of the speed sensor 3 is adjusted.

[0081] At this time, the distance measuring plate 42 is rotated counterclockwise by 90 degrees, so that the distance measuring plate 42 is suspended above the groove 23. At the same time, the connecting sleeve 41 drives the connecting rod 51 to rotate counterclockwise by 90 degrees through the square shaft 53. The connecting rod 51 drives the fixing block 52 to descend and abut against the bracket 101 through the action of the thread, so as to limit the mounting plate 2. Then, the distance measuring plate 42 is lowered to be stored in the groove 23.

[0082] That is, when the use state of the ranging plate 42 is switched, the fixing member 5 can complete the unlocking and limiting of the mounting plate 2, which is convenient to operate.

[0083] When the ranging plate 42 is rotated counterclockwise, a lateral force can be applied to the mounting plate 2 in a direction perpendicular to the slide bar 102, so that the mounting plate 2 and the slide bar 102 are in contact with each other, thereby further ensuring that the mounting plate 2 will not move along the slide bar 102 when the ranging plate 42 is rotated.

[0084] Preferably, sliders are provided on both sides of the inner wall of the connecting sleeve 41, and sliding grooves are opened on both sides of the square shaft 53. The sliders slide into the sliding grooves, thereby limiting the sliding distance of the connecting sleeve 41 relative to the square shaft 53 to prevent the connecting sleeve 41 from separating from the square shaft 53.

[0085] In this embodiment, the calibration sleeve 61 is sleeved on the calibration plate 63 , and a slide rail 421 is provided at the bottom of the calibration plate 63 , and the calibration sleeve 61 is slidably assembled with the slide rail 421 .

[0086] In the present embodiment, the distance measuring member 4 is used in combination with the fixing member 5, so that when the distance measuring plate 42 is rotated ninety degrees and parallel to the speed sensor 3, the center line of the distance measuring plate 42 is parallel to and does not overlap with the center line of the speed sensor 3. By providing the stop member 43, the stop member 43 has an overlapping portion with the center line of the speed sensor 3, so that when the distance measuring member 4 abuts against the piece to be measured when pushing the mounting plate 2, the portion where the stop member 43 overlaps with the center line of the speed sensor 3 abuts against the piece to be measured, i.e., it is ensured that the spacing value corresponding to the scale value on the detection end of the speed sensor 3 and the distance measuring plate 42 is the installation distance value between the piece to be measured.

[0087] The portion where the stopper 43 contacts the test piece is the zero scale line.

[0088] Of course, in other embodiments, the distance measuring component 4 and the fixing component 5 can also be provided separately. In this case, the distance measuring component 4 includes a rotating shaft and a distance measuring plate 42. The distance measuring plate 42 is installed on the top of the mounting plate 2 through the rotating shaft. When the distance measuring plate 42 rotates to be parallel to the speed sensor 3, the center line of the distance measuring plate 42 coincides with the center line of the speed sensor 3.

[0089] See also Figure 5 As an optional method of this embodiment, the stop member 43 includes a stop plate 431 and a pulley 432, one end of the stop plate 431 is installed on the ranging plate 42, and the pulley 432 is rotatably installed on the other end of the stop plate 431.

[0090] By setting a pulley 432 on the stop plate 431, when the stop member 43 abuts against the piece to be measured, the pulley 432 leaking out of the outer part of the stop plate 431 abuts against the piece to be measured, and then when the ranging plate 42 is rotated counterclockwise to be suspended above the groove 23, the pulley 432 and the piece to be measured roll to reduce friction.

[0091] See also Figure 7 When the distance measuring plate 42 rotates to be parallel to the speed sensor 3, the distance L between the pulley 432 and the detection end of the speed sensor 3 is the installation distance.

[0092] See also Figure 3 In one embodiment, a mounting hole 22 is provided on the mounting plate 2, and a first nut 21 is fixedly installed on one side of the mounting plate 2, and the first nut 21 is concentrically arranged with the mounting hole 22;

[0093] The rotation speed detection device further includes a second nut 8 , which is threadedly connected to the rotation speed sensor 3 and abuts against the mounting plate 2 .

[0094] By providing the first nut 21 and the second nut 8 to thread the two ends of the rotation speed sensor 3 , the thread connection surface is enlarged and the stability of the thread connection is improved.

[0095] Preferably, a flange is provided on one side of the second nut 8, and a rubber pad is provided on the side of the flange facing the mounting plate 2, so as to increase the friction between the second nut 8 and the mounting plate 2 after being pressed against the mounting plate 2, thereby improving the stability of the installation.

[0096] In another embodiment, a threaded hole may be directly opened on the mounting plate 2 , and the rotation speed sensor 3 is directly threadedly connected to the threaded hole.

[0097] In another embodiment, a fixing nut may be embedded in the assembly hole 22 , and the rotation speed sensor 3 is threadedly connected to the nut.

[0098] See also Figure 2 As a preferred embodiment of this embodiment, the rotation speed detection device also includes a limit arm 7, one end of the limit arm 7 is installed on the ranging plate 42, a plurality of positioning grooves 81 are arranged around the second nut 8, and the other end of the limit arm 7 is inserted into the interior of one of the positioning grooves 81.

[0099] When the stopper 43 abuts against the piece to be measured and the speed sensor 3 determines the installation distance, the distance measuring plate 42 is rotated counterclockwise to be suspended above the groove 23. At this time, the limit arm 7 is aligned with a positioning groove 81 on the second nut 8. When the distance measuring plate 42 moves down to the inside of the groove 23, one end of the limit arm 7 is inserted into the inside of the positioning groove 81.

[0100] At this time, the limiting arm 7 cooperates with the positioning groove 81 to limit the axial position of the second nut 8 to prevent the second nut 8 from loosening due to the vibration generated by the work of the test piece, and the ranging plate 42 cooperates with the groove 23 to limit the other shaft 53 at the same time, that is, to limit the axial position of the connecting rod 51 to prevent the fixing block 52 from loosening, resulting in unstable limiting of the mounting plate 2.

[0101] Furthermore, by providing the limiting arm 7 , the distance measuring plate 42 can be easily moved out of the groove 23 .

[0102] A notch is provided on one side of the groove 23 corresponding to the position of the limiting arm 7 and the stop plate 431 . When the distance measuring plate 42 is located inside the groove 23 , the limiting arm 7 and the stop plate 431 are correspondingly received in the notch.

[0103] By providing a plurality of positioning grooves 81 on the second nut 8, when the displacement of the speed sensor 3 is very small, the positioning grooves 81 can be aligned with the limit arm 7 by adjusting the second nut 8. For example, when there are six positioning grooves 81, the speed sensor 3 only needs to move one sixth of the pitch by rotating one sixth of a circle.

[0104] By setting a conventional installation distance, when the rotation speed sensor 3 moves to the installation distance, a positioning groove 81 just corresponds to the limiting arm 7 .

[0105] The working principles of the speed detection device and the indexing plate speed accuracy detection system provided by the present invention are as follows:

[0106] When determining the detection distance between the speed sensor 3 and the workpiece to be measured, since the mounting plate 2 and the sliding frame 1 are slidably connected, the distance between the mounting plate 2 and the workpiece to be measured can be adjusted to have a certain distance, which is convenient for the subsequent installation operation of the speed sensor 3. The speed sensor 3 is then threadedly connected to the mounting plate 2, and the distance measuring component 4 is adjusted to be parallel to the speed sensor 3. The speed sensor 3 is continued to be screwed, and according to the scale value on the distance measuring component 4, the distance between the detection end of the speed sensor 3 and the stopping end of the distance measuring component 4 is made to be the distance required for installation. The mounting plate 2 is then moved to drive the speed sensor 3 and the distance measuring component 4 to move toward the workpiece to be measured, so that the stopping end of the distance measuring component 4 abuts against the workpiece to be measured. At this time, the distance between the speed sensor 3 and the workpiece to be measured is the required installation distance. The position of the mounting plate 2 is then limited by the fixing component 5, and the distance measuring component 4 is rotated ninety degrees and retracted. The operation of determining the installation distance of the speed sensor 3 is simple and convenient.

[0107] Among them, the speed detection device is used in multiple fields, such as motors, fans, pumps, wheels, and indexing plates.

[0108] When used in indexing plates, see Figure 8 and Fig. 9, the present invention also provides a rotating speed accuracy detection system for a dividing plate, comprising a data acquisition module, an analysis and display module and the rotating speed detection device;

[0109] Wherein, the rotation speed detection device, the acquisition module and the analysis and display module are signal-connected in sequence.

[0110] See also Figure 8 According to the above method, the speed detection device is installed on one side of the dividing plate 9, and the detection end of the speed sensor 3 faces the dividing plate 9. When the dividing plate 9 is working, the speed sensor 3 detects the speed of the dividing plate, and the acquisition module collects the speed data detected by the speed sensor 3. Then the acquisition module transmits the speed information to the analysis and display module, and the analysis and display module analyzes and displays the speed data.

[0111] The analysis and display module uses a speed threshold value set in advance, and when the speed value detected by the analysis and display module is not within the speed threshold, an alarm is issued to the staff.

[0112] In this embodiment, when the rotation speed sensor 3 adopts a Hall speed sensor, the rotation speed accuracy detection system of the indexing plate 9 further includes a magnetic patch, which is installed on the peripheral side of the indexing plate 9. The Hall speed sensor measures the rotation speed by accurately detecting the change of the magnetic field of the magnetic patch.

[0113] The magnetic patch can also be a magnetic block, etc. The installation distance is usually between 0.5 mm and 3 mm.

[0114] The sliding frame 1 in the rotation speed detection device can be installed on the housing of the dividing plate 9 or installed on a work surface or the ground and arranged adjacent to the dividing plate 9.

[0115] Among them, the specific structure of the speed detection device refers to the above embodiment. Since the speed accuracy detection system of the dividing plate 9 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0116] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A rotation speed detection device, characterized in that: include: Sliding rack; A mounting plate, the mounting plate being slidably mounted on the sliding frame; A rotation speed sensor, wherein the rotation speed sensor is provided with a threaded surface, and the rotation speed sensor is threadedly mounted on the mounting plate; A distance measuring member, the distance measuring member is rotatably mounted on the mounting plate, and a scale value is set on the distance measuring member; A fixing member, the fixing member is used to limit the position of the mounting plate relative to the sliding frame; When determining the installation distance between the rotation speed sensor and the object to be measured, the distance measuring member is arranged in parallel with the rotation speed sensor, and the rotation speed sensor is rotated to move the rotation speed sensor toward the resisting end of the distance measuring member, and the distance between the detection end of the rotation speed sensor and the resisting end of the distance measuring member is the installation distance; Then, the mounting plate is driven to move toward the object to be measured, so that the stop end of the distance measuring member abuts against the object to be measured. At this time, the distance between the rotation speed sensor and the object to be measured is the mounting spacing; The fixing member comprises a connecting rod, a fixing block and a square shaft, wherein the connecting rod passes through the mounting plate and is threadedly connected to the mounting plate, the fixing block is installed at the bottom end of the connecting rod, and the square shaft is installed at the top end of the connecting rod; A groove is formed on the top of the mounting plate, and the distance measuring component is located inside the groove; The distance measuring member comprises a connecting sleeve, a distance measuring plate and a stopper. The distance measuring plate is mounted on the square shaft through the connecting sleeve. The stopper is vertically mounted on an end of the distance measuring plate away from the connecting sleeve. The scale value is set on the distance measuring plate. The sliding frame comprises a bracket and a plurality of sliding rods, the plurality of sliding rods are installed on the bracket at intervals, and the mounting plate is sleeved on the sliding rods; The rotation speed detection device also includes a calibration piece, which includes a calibration sleeve, a spherical connector and a calibration plate. The calibration sleeve is mounted on the distance measuring piece and is slidably connected to the distance measuring piece. The calibration plate is rotatably mounted on the bottom of the calibration sleeve through the spherical connector. The stopper comprises a stopper plate and a pulley, one end of the stopper plate is mounted on the distance measuring plate, and the pulley is rotatably mounted on the other end of the stopper plate; An assembly hole is provided on the mounting plate, a first nut is fixedly mounted on one side of the mounting plate, and the first nut is concentrically arranged with the assembly hole; The rotation speed detection device further comprises a second nut, the second nut being threadedly connected to the rotation speed sensor and abutting against the mounting plate; The rotation speed detection device also includes a limit arm, one end of which is mounted on the distance measuring plate, a plurality of positioning grooves are formed around the second nut, and the other end of the limit arm is inserted into the interior of one of the positioning grooves.

2. A rotating speed accuracy detection system for a dividing plate, characterized in that: It comprises a data acquisition module, an analysis and display module and the rotation speed detection device as claimed in claim 1; Wherein, the rotation speed detection device, the acquisition module and the analysis and display module are signal-connected in sequence.

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