Compressor rotor magnetic steel connection strength detection device

Abstract

The utility model belongs to the technical field of compressor detection, and particularly discloses a compressor rotor magnetic steel connection strength detection device which comprises a press machine, a pressure sensor, a positioning tool, a controller and an output terminal. The positioning tool is arranged on a working table of the press machine, the positioning tool is used for supporting and positioning the compressor rotor, the press machine is provided with a pressing head, and the pressing head is used for applying pressure to magnetic steel on the compressor rotor; the pressure sensor is connected with the pressure head, and the controller is connected with the pressure sensor and the output terminal through signal cables. Through the pressure sensor, the controller and the output terminal, pressure data are quantized, the pressure applied to the magnetic steel is accurately controlled, the magnetic steel is prevented from being damaged, the operation safety is improved, and meanwhile the labor cost in the detection process is reduced. In addition, the positioning tool is good in adaptability, the detection position of the compressor rotor workpiece is accurately positioned through the positioning pin, the handle is pulled downwards to press the pressing head to the magnetic steel to detect the connection strength of the magnetic steel, and operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressor detection and relates to a compressor rotor magnetic steel connection strength detection device. Background Art

[0002] The compressor is a fluid machine that boosts low-pressure gas to high-pressure gas and is the heart of the refrigeration system. The compressor inhales low-temperature, low-pressure refrigerant gas from the suction pipe, compresses it through the motor, and then discharges high-temperature, high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle.

[0003] The motor rotor of the high-efficiency variable frequency compressor has magnets attached to the outer surface of the core to improve the electrical performance of the compressor. The magnets are attached using special glue. The connection strength of the magnets directly affects the normal operation of the rotor in the compressor and is an important control indicator. It is required to apply a certain pressure to the attached magnets. The magnets cannot be loose or fall off, otherwise the rotor cannot rotate normally and the basic functions of the compressor will fail.

[0004] The existing test of the connection strength of the compressor rotor magnet is usually to place a cylindrical iron rod vertically above the magnet after the magnet is pasted, and use a hammer to knock on the cylindrical iron rod to observe whether the magnet is loose or falling off. The testing process has the following problems: First, the data cannot be quantified, and the pressure applied to the magnet cannot be accurately controlled during the test; second, knocking can easily cause the magnet to break, and the rotor will be scrapped, resulting in increased waste costs; third, this testing method has a low safety factor and poor operational convenience.

[0005] Based on this, there is an urgent need to propose a new compressor rotor magnetic steel connection strength detection device to solve the above-mentioned technical problems existing in the prior art. Utility Model Content

[0006] The utility model aims to provide a compressor rotor magnetic steel connection strength detection device to replace the hammer knocking detection method and realize the quantification of the detection pressure data.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A compressor rotor magnetic steel connection strength detection device, comprising a press and a pressure sensor;

[0009] It also includes positioning tooling, controllers and output terminals;

[0010] The positioning tool is arranged on the working table of the press machine, and is used to support and position the compressor rotor;

[0011] The press is provided with a pressure head, which is used to apply pressure to the magnetic steel on the compressor rotor;

[0012] The pressure sensor is connected to the pressure head of the press;

[0013] The controller is connected to the pressure sensor and the output terminal via signal cables respectively.

[0014] Preferably, the positioning tool includes a base plate and positioning pins, wherein the base plate is arranged at the upper end of the work surface, and the positioning pins are arranged on the base plate.

[0015] Preferably, the output terminal is a display instrument.

[0016] Preferably, the press further comprises a support column, a spindle box, a spindle and a handle;

[0017] The lower end of the supporting column is connected to the work table, and the upper end of the supporting column is connected to the spindle box;

[0018] The spindle is arranged in the spindle box, and the pressure head is arranged at the lower end of the spindle;

[0019] The handle is connected to the main shaft, and the handle drives the main shaft and the pressure head to descend, and the pressure head applies pressure to the magnetic steel on the compressor rotor.

[0020] Preferably, the press also includes a transmission shaft, a driving gear and a rack, the transmission shaft is rotatably connected to the spindle box, the driving gear is arranged on the transmission shaft, the rack is arranged on the spindle, the driving gear is meshed with the rack, and the handle is connected to the transmission shaft.

[0021] Preferably, the pressure sensor is arranged between the main shaft and the pressure head.

[0022] Preferably, the pressure sensor is arranged on a sensor seat, and the upper end of the sensor seat is connected to the lower end of the main shaft.

[0023] Preferably, a avoidance groove is provided on one side of the sensor seat, and the wiring terminal of the pressure sensor is led out through the avoidance groove.

[0024] Preferably, a return spring is connected between the spindle box and the spindle.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] As described above, the utility model relates to a compressor rotor magnetic steel connection strength detection device, which quantifies pressure data through a pressure sensor, a controller and an output terminal, accurately controls the pressure applied to the magnetic steel, avoids damage to the magnetic steel, improves the safety of operation, and reduces the cost of labor waste in the process of magnetic steel connection strength detection. In addition, the positioning tool has good adaptability, and the detection position of the compressor rotor workpiece is accurately located by the positioning pin, and the handle is pulled down to press the pressure head to the magnetic steel to detect its connection strength, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0028] Figure 1 This is a schematic diagram of the structure of a compressor rotor magnetic steel connection strength detection device according to an embodiment of the utility model;

[0029] Figure 2 This is a front view of a compressor rotor magnetic steel connection strength detection device according to an embodiment of the utility model;

[0030] Figure 3 This is a side view of a compressor rotor magnetic steel connection strength detection device according to an embodiment of the utility model;

[0031] Figure 4 A top view of a compressor rotor magnetic steel connection strength detection device according to an embodiment of the utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the positioning tooling according to an embodiment of the utility model;

[0033] Figure 6 A top view of a positioning tool according to an embodiment of the utility model;

[0034] Figure 7 A side view of a positioning tool according to an embodiment of the utility model;

[0035] Figure 8 A top view of the bottom plate of the utility model embodiment;

[0036] Fig. 9 It is a front view of the pressure sensor, sensor seat and pressure head of the embodiment of the utility model;

[0037] Fig.10 A cross-sectional view of a pressure sensor, a sensor seat and a pressure head according to an embodiment of the utility model;

[0038] Fig.11 A top view of the pressure sensor, sensor seat and pressure head according to an embodiment of the utility model;

[0039] Fig.12 This is a schematic diagram of the structure of the sensor seat of the embodiment of the utility model;

[0040] Fig.13 It is a front view of the sensor seat of the embodiment of the utility model;

[0041] Fig.14 It is a cross-sectional view of the sensor seat of the embodiment of the utility model;

[0042] Fig.15 This is a schematic diagram of the structure of the pressure head of an embodiment of the utility model;

[0043] Fig.16 It is a front view of the pressure head of the embodiment of the utility model;

[0044] Fig.17 A top view of the pressure head of the embodiment of the utility model;

[0045] Fig.18 This is a schematic diagram of the structure of the first positioning pin in an embodiment of the utility model;

[0046] Fig.19 It is a front view of the first positioning pin of the embodiment of the utility model;

[0047] Fig. 20 A top view of a first positioning pin according to an embodiment of the utility model;

[0048] Fig.21 This is a schematic structural diagram of a second positioning pin in an embodiment of the utility model;

[0049] Fig. 22 It is a front view of the second positioning pin of the embodiment of the utility model;

[0050] Fig.23 It is a top view of the second positioning pin of the embodiment of the utility model.

[0051] Among them, 0-magnetic steel, 1-press machine, 11-working table, 12-support column, 13-spindle box, 14-spindle, 15-handle, 16-transmission shaft, 2-pressure sensor, 21-sensor seat, 211-avoidance groove, 22-screw, 23-second spring washer;

[0052] 3-pressure head, 4-positioning tool, 41-base plate, 421-first positioning pin, 422-second positioning pin, 431-bolt, 432-nut, 44-pressure plate, 45-first spring washer, 5-display instrument. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0054] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0055] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0059] Example:

[0060] like Figure 1 As shown, the compressor rotor magnetic steel connection strength detection device in this embodiment includes a press, a pressure sensor 2, a positioning tool 4, a controller and an output terminal. Among them, the positioning tool 4 is set on the working table 11 of the press, and the positioning tool 4 is used to support and position the compressor rotor. The press is provided with a pressure head 3, and the pressure head 3 is used to apply pressure to the magnetic steel 0 on the compressor rotor. The pressure sensor 2 is connected to the pressure head 3 of the press, and the controller is connected to the pressure sensor 2 and the output terminal through a signal cable.

[0061] The press in this embodiment is preferably a manual press, and the output terminal is preferably a display instrument 5. It should be noted that the press is not limited to the above-mentioned human-driven press, and may also be an electric press, a hydraulic press, etc. Similarly, the output terminal is not limited to the above-mentioned display instrument 5. The connection method between the controller and the pressure sensor 2 and the output terminal is not limited to the signal cable, but may also be a wireless connection.

[0062] like Figures 2 to 4 As shown, the press machine 1 also includes a support column 12, a spindle box 13, a spindle 14 and a handle 15. A positioning fixture 4 is arranged above the work surface 11, and a compressor rotor workpiece whose magnetic steel connection strength needs to be tested is placed above the positioning fixture 4.

[0063] like Figures 5 to 7 As shown, the positioning tool 4 of this embodiment includes a base plate 41, a first positioning pin 421 and a second positioning pin 422. Figure 3 As shown, the bottom plate 41 is disposed at the upper end of the work surface 11, and rectangular grooves (such as Figure 8 As shown), a T-slot is provided at a corresponding position on the upper end of the work surface 11, and the work surface 11 is connected to the base plate 41 by a bolt 431, and a nut 432 is sleeved on the upper end of the bolt 431. A pressure plate 44 and a first spring washer 45 are preferably provided between the base plate 41 and the nut 432 for reinforcement, which can better fix the positioning tool 4 to prevent loosening.

[0064] The first positioning pin 421 and the second positioning pin 422 are arranged on the bottom plate 41. The middle section of the first positioning pin 421 is shaped like a cylinder (such as Figures 18 to 20 As shown), the middle section of the second positioning pin 422 is in the shape of a complete cylinder (as shown Figure 21 to Figure 23 The shapes of the first positioning pin 421 and the second positioning pin 422 are well adapted to the compressor rotor workpiece, and the detection position is accurately positioned through the support of the positioning pins.

[0065] like Figures 2 to 4 As shown, the support column 12 is preferably arranged at the middle position of one side of the top of the work surface 11, the lower end of the support column 12 is connected to the work surface 11, and the upper end of the support column 12 is connected to the spindle box 13. The spindle 14 is arranged in the spindle box 13, and the pressure head 3 is arranged at the lower end of the spindle 14. Preferably, the spindle box 13 is provided with a limiting hole along the vertical direction, and the spindle 14 is arranged in the limiting hole.

[0066] In this embodiment, the handle 15 is located on the side of the spindle box 13, and the handle 15 is connected to the spindle 14 by transmission, and the handle 15 drives the spindle 14 and the ram 3 to descend. The press 1 also includes a transmission shaft 16, a driving gear and a rack (the driving gear and the rack are not shown in the spindle box 13), the transmission shaft is rotatably connected to the spindle box 13, the transmission shaft is provided with a driving gear, the spindle 14 is provided with a rack, the driving gear is meshed with the rack, and the handle 15 is connected to the transmission shaft 16.

[0067] A return spring (not shown) is connected between the spindle box 13 and the spindle 14. Pulling the handle 15 moves the spindle 14 downward, thereby lowering the pressure head 3, which applies pressure to the magnetic steel 0 attached to the compressor rotor. After releasing the handle 15, the spindle 14 rises and returns to its initial position under the force of the return spring to restore the deformation. The opening height and stroke of the press 1 are adjusted as needed to ensure that the stroke is not exceeded during the detection process to avoid damage to the compressor rotor workpiece. The connection strength can be tested by pulling the handle 16 downward to press the pressure head 3 against the magnetic steel 0, which is easy to operate.

[0068] The pressure sensor 2 is arranged between the main shaft 14 and the pressure head 3, and the pressure sensor 2 is connected to the display instrument 5 through the controller signal. Figures 9 to 11 As shown, the pressure sensor 2 is disposed in the sensor seat 21, and the upper end of the sensor seat 21 is connected to the lower end of the main shaft 14. Figure 12 to Figure 14 As shown, a avoidance groove 211 is provided on one side of the sensor seat 21 , and the wiring terminal of the pressure sensor 2 is led out through the avoidance groove 211 .

[0069] The pressure sensor 2 converts the pressure applied to the magnetic steel 0 into an electrical signal, which is transmitted to the controller through a signal cable, and the pressure data is displayed on the display instrument 5. Through the pressure sensor 2, the controller and the display instrument 5, the pressure data is quantified during the detection process, and the pressure applied to the magnetic steel 0 is accurately controlled, thereby avoiding damage to the compressor rotor workpiece.

[0070] In addition, if Figures 15 to 17 As shown, through holes are opened at equal distances around the probe of the pressure head 3. As shown in FIG12, through holes are also opened on the sensor seat 21. The sensor seat 21 and the pressure sensor 2, and the pressure sensor 2 and the pressure head 3 are preferably connected by screws 22. The screws 22 are sleeved with second spring washers 23 for reinforcement to prevent the screws 22 from loosening.

[0071] In addition, the material of the pressure head 3, the first positioning pin 421 and the second positioning pin 422 is preferably 40Cr alloy steel, the material of the bottom plate 41 and the pressure plate 44 is preferably Q235 carbon structural steel, and the first spring washer 45 and the second spring washer 23 are preferably 65Mn spring steel.

[0072] In order to improve the strength and hardness of the material and make it have a good performance state, the pressure head 3 is preferably quenched, and the hardness of the pressure head 3 is 53-55HRC; the first positioning pin 421 and the second positioning pin 422 are preferably heat treated as a whole, and the hardness of the first positioning pin 421 and the second positioning pin 422 is 52-55HRC. In order to improve the finish and flatness of the material surface, the sensor seat 21, the pressure head 3 and the bottom plate 41 are preferably deburred, and the first positioning pin 421 and the second positioning pin 422 are preferably deburred and polished.

[0073] The use process of the compressor rotor magnetic steel connection strength detection device in this embodiment is as follows:

[0074] The compressor rotor workpiece is placed on the positioning fixture 4, and the first positioning pin 421 and the second positioning pin 422 cooperate to support the compressor rotor workpiece and accurately locate the detection position;

[0075] Pull the handle 15 by hand, align the pressure head 3 with and contact the surface of the compressor rotor magnet 0, continue to pull the handle 15 downward, and observe the pressure data on the display instrument 5 at the same time. When the pressure reaches 300N, stop pulling the handle 15 downward and keep it at the current position, continue to apply pressure to the surface of the magnet 0, and observe whether the magnet 0 is loose or falling off. After completing the inspection of the current connection strength of the magnet 0, release the handle 15, and the return spring in the main shaft 14 will automatically rebound. Driven by the force of the return spring to restore the deformation, the pressure head 3 rises and leaves the surface of the magnet 0 and returns to the initial position;

[0076] Repeat the pulling of the handle 15 and the subsequent operations to test the connection strength of the multiple magnetic steels 0 arranged on the periphery of the rotor core one by one.

[0077] So far, the present embodiment has been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the compressor rotor magnetic steel connection strength detection device of the present utility model. Of course, the above is only a preferred embodiment of the present utility model, and does not limit the patent scope of the present utility model. All equivalent structural transformations made by using the contents of the present utility model specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present utility model and should be protected by the present utility model.

Claims

1. A compressor rotor magnetic steel connection strength detection device, comprising a press and a pressure sensor; characterized in that: It also includes positioning tooling, controllers and output terminals; The positioning tool is arranged on the working table of the press machine, and is used to support and position the compressor rotor; The press is provided with a pressure head, and the pressure head is used to apply pressure to the magnetic steel on the compressor rotor; The pressure sensor is connected to the pressure head of the press; The controller is connected to the pressure sensor and the output terminal via signal cables respectively.

2. The compressor rotor magnetic steel connection strength detection device according to claim 1, characterized in that: The positioning tool comprises a base plate and positioning pins, wherein the base plate is arranged on the upper end of the work surface, and the positioning pins are arranged on the base plate.

3. The compressor rotor magnetic steel connection strength detection device according to claim 1, characterized in that: The output terminal is a display instrument.

4. The compressor rotor magnetic steel connection strength detection device according to claim 1, characterized in that: The press also includes a support column, a spindle box, a spindle and a handle; The lower end of the support column is connected to the work surface, and the upper end of the support column is connected to the spindle box; The spindle is arranged in the spindle box, and the pressure head is arranged at the lower end of the spindle; The handle is connected to the main shaft, and the handle drives the main shaft and the pressure head to descend, and the pressure head applies pressure to the magnetic steel on the compressor rotor.

5. The compressor rotor magnetic steel connection strength detection device according to claim 4, characterized in that: The press also includes a transmission shaft, a driving gear and a rack. The transmission shaft is rotatably connected to the spindle box, the driving gear is arranged on the transmission shaft, the rack is arranged on the spindle, the driving gear is meshed with the rack, and the handle is connected to the transmission shaft.

6. The compressor rotor magnetic steel connection strength detection device according to claim 4, characterized in that: The pressure sensor is arranged between the main shaft and the pressure head.

7. The compressor rotor magnetic steel connection strength detection device according to claim 6, characterized in that: The pressure sensor is arranged on a sensor seat, and the upper end of the sensor seat is connected to the lower end of the main shaft.

8. The compressor rotor magnetic steel connection strength detection device according to claim 7, characterized in that: A avoidance groove is arranged on one side of the sensor seat, and the connection terminal of the pressure sensor is led out through the avoidance groove.

9. The compressor rotor magnetic steel connection strength detection device according to claim 4, characterized in that: A return spring is connected between the spindle box and the spindle.

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