Device for measuring oil groove size of end cover of cycloid rotor pump

Abstract

The utility model relates to a cycloid rotor pump end cover oil groove dimension measuring device, and solves the technical problems of complex operation, long time consumption, low efficiency and incapability of being applied to mass detection in the prior art. The device comprises a base, and a fixing mechanism and a measuring mechanism which are arranged on the base. The fixing mechanism comprises a workbench, a starting mark and a positioning pin column. A positioning center hole is formed in the workbench; the measuring mechanism comprises a supporting rod, an elbow hanging rod and a measuring supporting frame. One end of the elbow hanging rod movably sleeves the supporting rod; one end of the measuring support frame is horizontally provided with a ruler measuring plate, and the other end is horizontally provided with an angle measuring plate; the ruler measuring plate is vertical to the measuring support frame; the center of the angle measuring plate coincides with the connecting center of the measuring supporting frame. Two sides of the ruler measuring plate are respectively sleeved with two ruler vernier poles in a sliding manner; and the other end of the elbow suspender is also sleeved with two angle measuring rods.

Description

TECHNICAL FIELD

[0001] The utility model relates to a swing rotor pump measuring device, concretely relates to a swing rotor pump end cover oil groove size measuring device. BACKGROUND

[0002] Swing rotor pump, as the core part of the large horsepower mechanical hydraulic stepless speed changer, its performance directly determines the working stability of the speed changer. Among them, the oil groove size of the flow distribution area of the swing rotor pump end cover is the key factor affecting the volumetric efficiency and noise performance of the swing rotor pump, so the oil groove size needs to be strictly controlled. For example Figure 1 As shown in the figure, the oil groove size parameter of the oil groove of the flow distribution area of the swing rotor pump end cover mainly reflects the length L and the angle β of the two flow distribution areas.

[0003] At present, the oil groove size measuring method widely used in the industry is to project the shape of the oil groove of the flow distribution area of the end cover onto the display screen through the laser projection measuring instrument, and compare it with the design drawing to determine whether it meets the design requirements. But this method has many problems, such as complex operation, long time-consuming, etc., and the efficiency of this method is low, which cannot be applied to large-scale detection.

[0004] Chinese patent CN 212779063U discloses a compressor upper cylinder cover angle detection device, which comprises a base, two groups of detection units are installed on the base; the detection unit comprises a center positioning pin and an auxiliary positioning pin arranged vertically, the auxiliary positioning pin is located on one side of the center positioning pin, the center positioning pin and the auxiliary positioning pin are fixed on the base, and the top of the center positioning pin is provided with an oil groove position reference mark; the height of the auxiliary positioning pin in one group of detection units is lower than that of the auxiliary positioning pin in the other group of detection units. But this device is mainly designed for the starting angle and ending angle of the spiral oil groove in the upper cylinder cover, and is not suitable for Figure 1 The oil groove of the flow distribution area of the end cover. Utility model content

[0005] The utility model aims at solving the technical problems of the prior art, such as complex operation, long time-consuming, low efficiency, and inability to be applied to large-scale detection, and provides a swing rotor pump end cover oil groove size measuring device.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows:

[0007] A swing rotor pump end cover oil groove size measuring device is used for measuring the oil groove size of the end cover; the end cover is a circular plate with a center hole, at least two pin holes or screw holes are arranged on the edge of the end cover; two oil grooves are arranged on the end cover and symmetrical along the axis, the axis is referred to as the central axis, the minimum distance between the upper end of the two oil grooves and the central axis is the length L, and the included angle between the radial straight line where the lower end edge is located and the central axis is the angle β.

[0008] The speciality is:

[0009] It comprises a base, and a fixing mechanism and a measuring mechanism arranged on the base;

[0010] The fixing mechanism comprises a workbench arranged on the base, two position marks arranged on the upper surface of the workbench, and at least two positioning pin columns arranged around the workbench; the size of the positioning pin columns is adapted to the pin hole or screw hole of the end cover; the upper surface of the workbench is provided with a positioning center hole;

[0011] The positions of the two position marks are used to correspond to the position of the central axis of the end cover, to determine the initial position of the measurement, and to ensure that the ruler vernier rod and the angle measuring rod will not pass the zero position; the position of the positioning center hole is used to correspond to the center position of the end cover; the positioning center hole and the positioning pin columns are used to horizontally fix the end cover on the workbench and to position it;

[0012] The measuring mechanism comprises a support rod arranged on the base, an elbow hanger arranged on the support rod, and a long strip-shaped measuring support frame arranged on the elbow hanger; the elbow hanger is an L-shaped rod, one end of which is movably sleeved on the support rod, and the other end is vertically downwardly arranged, and the size of the other end is adapted to the positioning center hole; the measuring support frame comprises a first support rod and a second support rod which are horizontally and collinearly arranged, and are used to correspond to the position of the central axis of the end cover; one end of the first support rod and one end of the second support rod are connected with the other end of the elbow hanger; the other end of the first support rod is provided with a horizontal ruler scale, and the other end of the second support rod is provided with a horizontal angle scale;

[0013] The ruler scale is perpendicular to the first support rod, the zero position of which is arranged at the center position of the connection between the two, and the scales on both sides of the zero position are symmetrically distributed; the center of the angle scale coincides with the center of the position where the second support rod and the elbow hanger are connected, the zero position of which is arranged in the length direction of the second support rod, and the scales on both sides of the zero position are symmetrically distributed; the thicknesses of the first support rod, the second support rod, the ruler scale and the angle scale are the same and are located on the same horizontal plane;

[0014] The zero positions of the ruler scale and the angle scale correspond to the position of the central axis of the end cover;

[0015] Two ruler vernier rods are movably sleeved on both sides of the zero position of the ruler scale, the ruler vernier rods are arranged perpendicularly to the ruler scale and can move along the measuring direction of the ruler scale; two angle measuring rods are further movably sleeved on the other end of the elbow hanger, and the length of the angle measuring rods is greater than the distance between the inner edge of the angle scale and the connection center.

[0016] Further, the length of the angle measuring rods is greater than the distance between the outer edge of the angle scale and the connection center.

[0017] Further, the diameter of the lower half of the other end of the elbow hanger is smaller than the diameter of the rest of the elbow hanger.

[0018] Further, the workbench is a stepped shaft structure formed by a first cylindrical shaft and a second cylindrical shaft, the second cylindrical shaft is coaxially arranged on the first cylindrical shaft, and the diameter of the second cylindrical shaft is matched with the hole diameter of the center hole of the end cover;

[0019] The positioning center hole is located at the center of the upper end surface of the second cylindrical shaft.

[0020] The position mark is located at the edge of the upper end surface of the second cylindrical shaft.

[0021] Further, the straight ruler vernier rod and the angle measuring rod are provided with a knob near the measuring position.

[0022] Further, the measuring range of the straight ruler scale is -30mm-30mm.

[0023] The measuring range of the angle scale is -60°-60°.

[0024] Further, the positioning pin column has four, three of which are corresponded to the screw hole positions of the end cover and are uniformly distributed in the circumferential direction, and the other is corresponded to the pin hole position of the end cover.

[0025] Further, the straight ruler vernier rod and the angle measuring rod are made of transparent acrylic.

[0026] Further, the first supporting rod and the straight ruler scale are integrally formed; and the second supporting rod and the angle scale are integrally formed.

[0027] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0028] 1. The swing rotor pump end cover oil groove size measuring device can accurately center the end cover, and ensure the accuracy of the measurement result.

[0029] 2. The swing rotor pump end cover oil groove size measuring device is simple to operate and convenient to use, and can effectively improve the measurement speed and accuracy of the oil groove size, greatly simplify the measurement process of the flow distribution area oil groove of the swing rotor pump end cover, and save time and labor.

[0030] 3. The utility model provides a kind of orbiting rotor pump end cover oil groove size measuring device, simple structure and low difficulty of hand, it can be applied to the orbiting rotor pump end cover measurement task in large quantities, and positioning pin post and starting bit mark can be set according to the pin hole and target parameter position of end cover, with certain popularization. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the structure diagram of orbiting rotor pump end cover flow distribution area oil groove;

[0032] Figure 2 It is the structure diagram of the embodiment of the utility model a kind of orbiting rotor pump end cover oil groove size measuring device;

[0033] Figure 3 It is the use state schematic diagram of the embodiment of the utility model;

[0034] Figure 4 It is the use flow chart of the embodiment of the utility model.

[0035] The following will be combined with the drawings, the specific technical scheme in the embodiment of the utility model is further described. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings, the specific technical scheme in the embodiment of the utility model is further described.

[0037] The utility model provides a kind of orbiting rotor pump end cover oil groove size measuring device, according to the installation pin hole and screw hole feature of orbiting rotor pump end cover, it is most accurately positioned in center, to use ruler and angle gauge board to be directly and quickly measured.

[0038] Figure 1 It is the flow distribution area oil groove of the end cover 9 measured in the embodiment of the utility model orbiting rotor pump, and the end cover 9 is the circular plate with central hole, and its edge is provided with three circumferential distribution screw holes and a pin hole;End cover 9 is provided with two oil grooves symmetrical along axis, record the axis as middle axis, the minimum distance of the upper end of two oil grooves and middle axis is length L, the included angle of the radial straight line where lower end edge is located and middle axis is angle β;Measurement target is two lengths L and two angles β.

[0039] Referring to Figure 2 A kind of orbiting rotor pump end cover oil groove size measuring device, including base 1, and fixed mechanism and measuring mechanism being set on base 1.

[0040] The fixing mechanism comprises a workbench 2 arranged on the base 1, two position marks 6 arranged on the upper surface of the workbench 2, and four positioning pin columns 3 arranged around the workbench 2; the size of the positioning pin columns 3 is adapted to the pin hole or screw hole of the end cover 9; the upper surface of the workbench 2 is provided with a positioning center hole 12; the positions of the two position marks 6 are used to correspond to the position of the central axis of the end cover 9; the position of the positioning center hole 12 is used to correspond to the center position of the end cover 9; the positions of the positioning pin columns 3 are used to correspond to the positions of the three screw holes and one pin hole of the end cover 9 respectively; the positioning center hole 12 and the positioning pin columns 3 are used to horizontally fix the end cover 9 on the workbench 2 and position the end cover 9.

[0041] The measuring mechanism comprises a support rod 4 arranged on the base 1, an elbow hanger 5 arranged on the support rod 4, and a long strip-shaped measuring support frame arranged on the elbow hanger 5; the elbow hanger 5 is an L-shaped rod, one end of which is movably sleeved on the support rod 4, and the other end is arranged vertically downward, and the size of the other end is adapted to the positioning center hole 12; the elbow hanger 5 can move up and down or rotate along the axial direction. The one end of the elbow hanger 5 sleeved on the support rod 4 is arranged horizontally, and the diameter of the lower half of the other end of the elbow hanger 5 is smaller than the diameter of the rest of the elbow hanger 5 (i.e. a thin rod structure, which is convenient for inserting into the positioning center hole 12).

[0042] The measuring support frame comprises a first support rod and a second support rod arranged horizontally and in line, and the first support rod and the second support rod correspond to the position of the central axis of the end cover 9; one end of the first support rod and one end of the second support rod are connected with the other end of the elbow hanger 5; the other end of the first support rod is provided with a horizontal ruler scale 7, and the two are designed in an integrated manner; the other end of the second support rod is provided with a horizontal angle scale 10, and the two are designed in an integrated manner; the measuring range of the ruler scale 7 is -30mm-30mm; the measuring range of the angle scale 10 is -60°-60°.

[0043] The ruler scale 7 is perpendicular to the first support rod, and the zero position is arranged at the center position of the connection between the two, i.e. at the middle position of the ruler scale 7, and the scales on both sides of the zero position are symmetrically distributed; the center of the angle scale 10 coincides with the center of the position where the second support rod and the elbow hanger 5 are connected (i.e. coincides with the positioning center hole 12 during measurement), and the zero position is arranged in the length direction of the second support rod, i.e. at the middle position of the angle scale 10, and the scales on both sides of the zero position are symmetrically distributed; that is, the two zero positions are located on the central axis of the end cover 9 during measurement.

[0044] The thicknesses of the first support rod, the second support rod, the ruler scale 7 and the angle scale 10 are the same and are located on the same horizontal plane;

[0045] Two ruler verniers 8 are respectively sleeved on both sides of the ruler scale 7 at its zero position, the ruler verniers 8 are vertically arranged with the ruler scale 7 and can move along the measuring direction of the ruler scale 7 and indicate the scale of the ruler scale 7. The other end of the elbow hanger 5 is also rotatably sleeved with two angle measuring rods 11, the length of the angle measuring rods 11 is greater than the distance between the outer edge of the angle scale 10 and the connecting center, the angle measuring rods 11 can rotate along the other end of the elbow hanger 5 (that is, rotate with the positioning center hole 12 as the center when measuring), and indicate the scale of the angle scale 10.

[0046] In the embodiment of the utility model, the workbench 2 is a two-step shaft structure, which is composed of a first cylindrical shaft and a second cylindrical shaft, the second cylindrical shaft is coaxially arranged on the first cylindrical shaft, the diameter of the second cylindrical shaft is equal to the hole diameter of the center hole of the end cover 9 and is smaller than the distance between the inner edges of the two oil grooves, and the center hole of the end cover 9 is directly sleeved on the second cylindrical shaft when fixed. The positioning center hole 12 is located at the center of the upper end surface of the second cylindrical shaft, and the bit mark 6 is located at the edge position of the upper end surface of the second cylindrical shaft.

[0047] In addition, the measuring position of the ruler vernier 8 and the angle measuring rod 11 is provided with a knob, which is used for quickly adjusting the position of the ruler vernier 8 and the angle measuring rod 11 during measurement. The ruler vernier 8 and the angle measuring rod 11 are made of transparent acrylic, which is convenient for measurement and reading.

[0048] Referring to Figures 3-4 The use method of the embodiment of the utility model is as follows:

[0049] I. alignment

[0050] Firstly, the pin hole and screw hole of the end cover 9 are aligned with the positioning pin column 3, then the end cover 9 is placed on the workbench 2, the elbow hanger 5 is rotated and adjusted downwards to align with the positioning center hole 12, so that the measuring mechanism is flatly combined with the end cover 9. After debugging, the measuring mechanism is reset, and the size of the end cover 9 is measured.

[0051] II. measurement

[0052] The left ruler vernier 8 is slid to the left end of the end cover 9, and the length L of the left end of the end cover 9 is recorded. The length of the right end of the end cover 9 is measured by repeating the above operation, and the measurement result is recorded in the data table.

[0053] Similarly, the angle measurement rod 11 coincides with the boundary line of the left side flow distribution area of the lower end of the end cover 9, and the angle of the left side angle measurement rod 11 rotating on the angle measuring plate 10 at this time is recorded, which is the value of the angle β of the left side flow distribution area of the lower end of the end cover 9, which is recorded in the data table. Repeat the angle measurement operation to measure the angle value of the right side flow distribution area of the lower end of the end cover 9, and then record it in the data table.

[0054] III. Comparison

[0055] Finally, the recorded values are compared with the design values on the drawing, and through comparison with the drawing, the four values must all meet the requirements of the drawing, and the end cover 9 can be stored as a qualified product, otherwise it will be treated as an unqualified product. After the comparison and measurement data are completed, remove the elbow hanger 5, then remove the end cover 9, and the entire measurement process is completed.

[0056] The specific steps are as follows:

[0057] S1, the pin hole and screw hole of the end cover 9 are aligned with the positioning pin column 3 on the base 1.

[0058] S2, place the end cover 9 on the workbench 2, turn the elbow hanger 5, and align it with the positioning center hole 12.

[0059] S3, lower the elbow hanger 5, align it and insert it into the positioning center hole 12, so that the ruler measuring plate 7 and the angle measuring plate 10 are in close contact with the plane of the end cover 9.

[0060] S4, reset the ruler vernier rod 8 and the angle measurement rod 11, i.e. turn them to the starting position mark 6, and the preparation work before measurement is completed.

[0061] S5, measure the length value of the upper end flow distribution area of the orbiting piston pump end cover

[0062] S5-1, slide the left side ruler vernier rod 8 to the arc cut point of the left side flow distribution area of the upper end of the end cover 9, record the value of the left side ruler vernier rod 8 moving on the ruler measuring plate 7 at this time, which is the value of the length L of the left side flow distribution area of the upper end of the end cover 9, which is recorded in the data table.

[0063] S5-2, slide the right side ruler vernier rod 8 to the arc cut point of the right side flow distribution area of the upper end of the end cover 9, record the value of the right side ruler vernier rod 8 moving on the ruler measuring plate 7 at this time, which is the value of the length L of the right side flow distribution area of the upper end of the end cover 9, which is recorded in the data table.

[0064] S6, measure the angle value of the lower end flow distribution area of the end cover 9

[0065] S6-1, the left angle measuring rod 11 is aligned with the boundary line of the left lower end flow distribution area of the end cover 9, and the angle of the left angle measuring rod 11 on the angle measuring plate 10 is recorded, which is the value of the left lower end flow distribution area angle β of the end cover 9, and is recorded in the data table.

[0066] S6-2, the right angle measuring rod 11 is aligned with the boundary line of the right lower end flow distribution area of the end cover 9, and the angle of the right angle measuring rod 11 on the angle measuring plate 10 is recorded, which is the value of the right lower end flow distribution area angle β of the end cover 9, and is recorded in the data table. The measurement is completed.

[0067] S7, the four values measured above are compared with the design values on the drawing, and it is judged:

[0068] When all the four values meet the requirements of the drawing, the end cover 9 is considered to be qualified, and the part is put into the warehouse for processing;

[0069] When one or more of the four values do not meet the requirements of the drawing, the end cover 9 is treated as unqualified, and is processed as scrap or rework.

[0070] S8, the ruler vernier rod 8 and the angle measuring rod 11 are reset, the elbow lifting rod 5 is lifted and turned to the side away from the workbench 2, and the end cover 9 is removed. The measurement is completed.

[0071] The above only describes the embodiments of the present application, and is not a limitation on the protection scope of the present application. Any equivalent structural transformation, direct or indirect application in other related technical fields, or any equivalent structural transformation, direct or indirect application in other related technical fields, is included in the patent protection scope of the present application. For those skilled in the art, it can be understood that the embodiments can be changed, modified, replaced and modified without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of cycloidal rotor pump end cover oil groove size measuring device, for measuring the oil groove size of end cover (9);The end cover (9) is the circular plate with central hole, its edge is provided with at least two pin holes or screw holes;End cover (9) is provided with two oil grooves along the axis of symmetry, record the axis as the central axis, the minimum distance of the upper end of two oil grooves and the central axis is length L, the included angle of the radial straight line where the lower end edge is located and the central axis is angle β; It is characterized by: Including base (1), and fixed mechanism and measuring mechanism being arranged on base (1); The fixed mechanism includes workbench (2) being arranged on base (1), two position marks (6) being arranged on the upper surface of workbench (2), and at least two positioning pin columns (3) being arranged around workbench (2);The size of the positioning pin column (3) is adapted to the pin hole or screw hole of the end cover (9);The upper surface of the workbench (2) is provided with a positioning center hole (12); The position of the two position marks (6) is used to correspond to the position of the central axis of the end cover (9);The position of the positioning center hole (12) is used to correspond to the central position of the end cover (9);The positioning center hole (12) and the positioning pin column (3) are used to horizontally fix the end cover (9) on the workbench (2) and position it; The measuring mechanism includes support rod (4) being arranged on base (1), elbow hanger (5) being arranged on support rod (4), and long strip-shaped measuring support frame being arranged on elbow hanger (5);The elbow hanger (5) is L-shaped rod, one end of which is sleeved on the support rod (4), and the other end is vertically downward, and the size of the other end terminal is adapted to the positioning center hole (12);The measuring support frame includes first support rod and second support rod which are horizontally and collinearly arranged, and is used to correspond to the position of the central axis of the end cover (9);One end of the first support rod and one end of the second support rod are connected with the other end of the elbow hanger (5);The other end of the first support rod is provided with horizontal ruler scale (7), and the other end of the second support rod is provided with horizontal angle scale (10); The ruler scale (7) is perpendicular to the first support rod, the zero position of which is arranged at the central position of the connection, and the scales on both sides of the zero position are symmetrically distributed;The center of the angle scale (10) coincides with the central position of the connection of the second support rod and the elbow hanger (5), and the zero position of which is arranged in the length direction of the second support rod, and the scales on both sides of the zero position are symmetrically distributed;The thicknesses of the first support rod, the second support rod, the ruler scale (7) and the angle scale (10) are the same and located in the same horizontal plane; Two ruler vernier rods (8) are respectively slidably sleeved on both sides of the zero position of the ruler scale (7), and the ruler vernier rod (8) is vertically arranged with the ruler scale (7) and can move along the measuring direction of the ruler scale (7);The other end of the elbow hanger (5) is also rotatably sleeved with two angle measuring rods (11), and the length of the angle measuring rod (11) is greater than the distance between the inner edge of the angle scale (10) and the connection center.

2. The cycloidal rotor pump end cover oil groove size measuring device according to claim 1, wherein: The length of the angle measuring rod (11) is greater than the distance between the outer edge of the angle gauge (10) and the connecting center.

3. The size measuring device for the oil groove of the end cover of a gerotor pump according to claim 2, characterized in that: The diameter of the lower half of the other end of the elbow hanger rod (5) is smaller than the diameter of the rest of the elbow hanger rod (5).

4. The size measuring device for the oil groove of the end cover of a gerotor pump according to any one of claims 1-3, characterized in that: The workbench (2) is a stepped shaft structure composed of a first cylindrical shaft and a second cylindrical shaft, the second cylindrical shaft is coaxially arranged on the first cylindrical shaft, and the diameter of the second cylindrical shaft is matched with the hole diameter of the center hole of the end cover (9); The positioning center hole (12) is located at the center of the upper end surface of the second cylindrical shaft; The bit marker (6) is located at the edge of the upper end surface of the second cylindrical shaft.

5. The size measuring device for the oil groove of the end cover of a gerotor pump according to claim 1, characterized in that: The straight ruler vernier rod (8) and the angle measuring rod (11) are provided with a knob near the measuring position.

6. The size measuring device for the oil groove of the end cover of a gerotor pump according to claim 1, characterized in that: The measuring range of the straight ruler gauge (7) is -30mm-30mm; The measuring range of the angle gauge (10) is -60°-60°.

7. The size measuring device for the oil groove of the end cover of a gerotor pump according to claim 1, characterized in that: The positioning pin column (3) has four, three of which correspond to the screw holes of the end cover (9) and are uniformly distributed in the circumferential direction, and the other corresponds to the position of the pin hole of the end cover (9).

8. The size measuring device for the oil groove of the end cover of a gerotor pump according to claim 1, characterized in that: The straight ruler vernier rod (8) and the angle measuring rod (11) are made of transparent acrylic.

9. The size measuring device for the oil groove of the end cover of a gerotor pump according to claim 1, characterized in that: The first support rod and the straight ruler gauge (7) are an integral structure; The second support rod and the angle gauge (10) are an integral structure.

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