A compressor performance automatic testing equipment

Abstract

The present invention provides an automatic test device for compressor performance, wherein an outer plate (602) of a crankshaft locking device (6) is evenly spaced along the circumference and arranged inside a bracket (601), a slideway is arranged at the bottom of the bracket (601), a plurality of friction wheels are installed in the slideway, one end of a screw rod (606) is threadedly connected to the bracket (601), and the other end is hinged to the middle of a connecting rod (605), both ends of the connecting rod (605) are hinged to the outer plate (602), an inner lining plate (603) is arranged between two adjacent outer plates (602), a connecting plate (604) is fixedly installed on the inner lining plate (603), horizontal slide grooves are arranged at both ends of the connecting plate (604), guide pins are inserted in the horizontal slide grooves, the guide pins are fixedly arranged on the outer plate (602), and the outer plate (602) slides along the horizontal slide grooves through the guide pins. The beneficial effects of the present invention are: it can be applied to the oiling speed and oiling amount testing of crankshafts of different sizes, has a high degree of automation, good testing effect and strong versatility.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment detection, and more specifically, to an automatic compressor performance testing device. Background Art

[0002] The compressor is the heart of the refrigeration system. It inhales low-temperature and low-pressure refrigerant gas from the suction pipe, compresses it by driving the piston through the operation of the motor, and discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle, thereby realizing the refrigeration cycle of compression → condensation → expansion → evaporation (heat absorption). In order to ensure the qualified performance of refrigeration compressors, improve product competitiveness, and also improve economic benefits, manufacturers of small piston compressors for refrigerators are paying more and more attention to the factory inspection of refrigerator refrigeration compressors. From a technical perspective, ensuring the crankshaft oiling speed and oiling amount of refrigerator compressors can ensure the reliability of the machinery for refrigerator compressors and enable the compressor to achieve more stable operation. Due to the large variety of refrigeration compressor models and different structural dimensions, when testing the crankshaft oiling effect, the efficiency and accuracy of manual testing are low, and the inspection items are scattered. The inspection of the same product needs to be carried out by multiple devices, and the switching process between multiple devices is often carried out manually, which not only increases the cost of the inspection equipment (many equipment, repeated waste of mechanisms), labor costs, but also increases the uncertainty of the inspection (manual intervention in the switching between various devices is prone to missed inspections and wrong inspections), and the versatility of the inspection equipment is not strong. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the problems existing in the prior art, an automatic testing device for compressor performance is provided, which has a simple and light structure, is easy to operate and has a high degree of automation. It can be used to test the oiling speed and oiling amount of crankshafts of different sizes, has good testing effect and strong versatility.

[0004] The technical problem to be solved by the present invention is achieved by adopting the following technical scheme: a compressor performance automatic testing equipment, including a spherical cover shell, a fixing frame, a cylinder wall, a cover shell driving device, a stroboscope and a crankshaft locking device, the fixing frame is cylindrical, the bottom of the fixing frame is an arc-shaped bottom surface protruding outward, the top of the fixing frame is provided with an annular slide groove, the spherical cover shell is embedded in the annular slide groove, the stroboscope is arranged on the top of the fixing frame, the middle part of the fixing frame is provided with a detachable cylinder wall, the rotating wheel of the cover shell driving device installed on the fixing frame contacts and cooperates with the spherical cover shell, the crankshaft locking device is arranged inside the fixing frame, and the crankshaft locking device includes a support A frame, an outer plate, an inner lining plate, a connecting plate, a connecting rod and a screw rod, wherein the outer plate is evenly spaced along the circumference inside the bracket, a slideway is provided at the bottom of the bracket, a plurality of friction wheels are installed in the slideway, a driving motor of the friction wheel is installed on the fixed frame, one end of the screw rod is matched with the bracket thread, and the other end is hinged to the middle part of the connecting rod, both ends of the connecting rod are hinged to the outer plate, an inner lining plate is provided between two adjacent outer plates, a connecting plate is fixedly installed on the inner lining plate, horizontal slide grooves are provided at both ends of the connecting plate, guide pins are inserted in the horizontal slide grooves, the guide pins are fixed on the outer plate, and the outer plate slides along the horizontal slide grooves through the guide pins.

[0005] Preferably, a plurality of spiral protrusions are provided on the inner wall surface of the spherical cover shell, and the spiral direction of the spiral protrusions is opposite to the rotation direction of the spherical cover shell.

[0006] Preferably, a plurality of balls are provided between the spherical cover shell and the annular groove.

[0007] Preferably, the spherical cover shell and the cylinder wall are both made of transparent materials.

[0008] Preferably, the upper portion of the fixing bracket is an annular box body, the annular slide groove is arranged at the top of the annular box body, an oil collecting port is arranged at the lowest point of the bottom of the annular box body, and the arc bottom surface of the bottom of the fixing bracket is connected to the annular box body through a plurality of connecting columns.

[0009] Preferably, a heating device and an electromagnet are provided at the bottom of the fixing frame.

[0010] Preferably, a high-speed camera is installed on the top of the fixing frame.

[0011] Preferably, outer surfaces of the rotating wheel and the friction wheel of the housing driving device are provided with patterns for increasing friction.

[0012] Preferably, the surfaces of the outer plate and the inner lining plate are both paved with elastic material layers.

[0013] Compared with the prior art, the beneficial effects of the present invention are: simple and light structure, easy operation and high degree of automation, applicable to the oiling speed and oiling amount test of crankshafts of different sizes, good test effect and strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 The schematic diagram of the internal structure of the present invention is shown without the spherical cover shell and the cylinder wall.

[0017] Figure 3 It is a front view of the crankshaft locking device of the present invention.

[0018] Figure 4 It is a top view of the crankshaft locking device of the present invention.

[0019] Figure 5 It is a schematic structural diagram of the crankshaft locking device of the present invention.

[0020] Figure 6 It is a partial enlarged view of the connection between the outer plate, the inner lining plate and the connecting plate of the present invention.

[0021] Figure 7 It is a schematic diagram of the internal structure of the spherical cover shell of the present invention.

[0022] Markings in the figure: 1-spherical cover shell, 2-fixed frame, 3-cylinder wall, 4-cover shell driving device, 5-strobe, 6-crankshaft locking device, 601-bracket, 602-outer plate, 603-inner lining plate, 604-connecting plate, 605-connecting rod, 606-screw. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] like Figure 1 and Figure 2As shown, a compressor performance automatic test equipment includes a spherical cover shell 1, a fixed frame 2, a cylinder wall 3, a cover drive device 4, a stroboscope 5 and a crankshaft locking device 6. The fixed frame 2 is cylindrical, and the bottom of the fixed frame 2 is an arc-shaped bottom surface protruding outward. The top of the fixed frame 2 is provided with an annular groove, and the spherical cover shell 1 is embedded in the annular groove. Preferably, a plurality of balls are provided between the spherical cover shell 1 and the annular groove to reduce the friction force when the spherical cover shell 1 rotates in the annular groove. The stroboscope 5 is arranged on the top of the fixed frame 2. By adjusting the frequency of the stroboscope to match the rotation speed of the crankshaft locking device 6, the oiling condition of the crankshaft can be observed. A high-speed camera is installed on the top of the fixed frame 2 to record the movement trajectory of the oil when the crankshaft is oiled. A removable cylinder wall 3 is provided in the middle of the fixing frame 2. The rotating wheel of the housing driving device 4 installed on the fixing frame 2 contacts and cooperates with the spherical housing 1. When the spherical housing 1 rotates under the drive of the housing driving device 4, its rotation direction is opposite to the rotation direction of the crankshaft locking device 6. The outer surface of the rotating wheel of the housing driving device 4 is provided with a pattern to increase friction to enhance the power transmission for driving the spherical housing 1 to rotate. The upper part of the fixing frame 2 is an annular box body, the annular chute is provided at the top of the annular box body, and an oil collecting port is provided at the lowest point of the bottom of the annular box body. The arc bottom surface of the bottom of the fixing frame 2 is connected to the annular box body through a plurality of connecting columns. A heating device and an electromagnet are provided at the bottom of the fixing frame 2 to simulate the viscosity change of the oil when the oil temperature rises when the compressor is working normally.

[0025] like Figure 7 As shown, the inner wall of the spherical cover shell 1 is provided with a plurality of spiral protrusions, and the spiral direction of the spiral protrusions is opposite to the rotation direction of the spherical cover shell 1, thereby reducing the splashing of oil and facilitating the collection of oil. The spherical cover shell 1 and the cylinder wall 3 are both made of transparent materials for easy observation.

[0026] like Figure 3-6As shown, the crankshaft locking device 6 is arranged inside the fixed frame 2, and the crankshaft locking device 6 includes a bracket 601, an outer plate 602, an inner lining plate 603, a connecting plate 604, a connecting rod 605 and a screw 606. The outer plate 602 is evenly spaced along the circumference inside the bracket 601, and a slideway is provided at the bottom of the bracket 601. A plurality of friction wheels are installed in the slideway. The driving motor of the friction wheel is installed on the fixed frame 2, and the outer surface of the friction wheel is provided with a pattern to increase the friction force. One end of the screw rod 606 is threadedly matched with the bracket 601, and the other end is hinged to the middle part of the connecting rod 605. The two ends of the connecting rod 605 are hinged on the outer plate 602. An inner lining plate 603 is provided between two adjacent outer plates 602. A connecting plate 604 is fixedly installed on the inner lining plate 603. Horizontal slide grooves are provided at both ends of the connecting plate 604. Guide pins are inserted in the horizontal slide grooves. The guide pins are fixed on the outer plate 602. The outer plate 602 slides along the horizontal slide groove through the guide pins. The surfaces of the outer plate 602 and the inner lining plate 603 are paved with an elastic material layer to increase the contact force and sealing between the outer plate 602 and the inner lining plate 603 and between the inner lining plate 603 and the crankshaft of the tested compressor. When in use, the crankshaft of the compressor to be tested is placed in an annular body composed of an outer plate 602, an inner lining plate 603 and a connecting plate 604. To enhance the roundness of the annular body, the number of the outer plate 602 and the inner lining plate 603 is not less than 8. By rotating the screw 606, the screw 606 pushes the connecting rod 605 so that the opening of the annular body composed of the outer plate 602, the inner lining plate 603 and the connecting plate 604 changes with the diameter of the crankshaft to be tested; then the driving motor of the friction wheel is started, so that the friction wheel drives the entire crankshaft locking device 6 to rotate, and while the friction wheel rotates, the cover driving device 4 also starts to rotate at the same speed. The heating device simulates the temperature rise inside the compressor when the compressor is working normally, heats the lubricating oil so that the viscosity of the oil is close to the actual working condition, the spherical cover shell 1 introduces the oil that hits it into the annular box body on the upper part of the fixed frame 2, and the oil is collected from the oil collecting port at the bottom of the annular box body and the volume is measured, the frequency of the stroboscope matches the rotation speed of the crankshaft locking device 6, so as to observe the oiling condition of the crankshaft, and the high-speed camera on the fixed frame 2 records the movement trajectory of the oil when the crankshaft is oiled, thereby providing a test basis for the crankshaft oiling effect detection of the compressor and the optimization and improvement of the crankshaft.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A compressor performance automated testing device, characterized in that: The invention comprises a spherical cover shell (1), a fixing frame (2), a cylinder wall (3), a cover shell driving device (4), a stroboscope (5) and a crankshaft locking device (6); the fixing frame (2) is cylindrical, the bottom of the fixing frame (2) is an arc-shaped bottom surface protruding outward, the top of the fixing frame (2) is provided with an annular slide groove, the spherical cover shell (1) is embedded in the annular slide groove, the spherical cover shell (1) and the cylinder wall (3) are both made of transparent materials, the stroboscope (5) is arranged on the top of the fixing frame (2), and the fixing frame (2) A high-speed camera is also installed on the top of the fixing frame (2); the upper part of the fixing frame (2) is an annular box body; the annular slide groove is arranged on the top of the annular box body; an oil collecting port is arranged at the lowest point of the bottom of the annular box body; the arc-shaped bottom surface of the bottom of the fixing frame (2) is connected to the annular box body through a plurality of connecting columns; a detachable cylinder wall (3) is arranged in the middle of the fixing frame (2); a rotating wheel of a cover driving device (4) installed on the fixing frame (2) contacts and cooperates with the spherical cover shell (1); a crankshaft locking device (6) is arranged on the fixing frame (2) The crankshaft locking device (6) comprises a bracket (601), an outer plate (602), an inner lining plate (603), a connecting plate (604), a connecting rod (605) and a screw (606). The outer plate (602) is evenly spaced along the circumference of the bracket (601). A slideway is provided at the bottom of the bracket (601). A plurality of friction wheels are installed in the slideway. The driving motor of the friction wheel is installed on the fixing frame (2). One end of the screw (606) is connected to the bracket (601). The other end is hinged to the middle part of the connecting rod (605), and the two ends of the connecting rod (605) are hinged to the outer plate (602). An inner lining plate (603) is provided between two adjacent outer plates (602), and a connecting plate (604) is fixedly installed on the inner lining plate (603). Horizontal slide grooves are provided at both ends of the connecting plate (604), and guide pins are inserted in the horizontal slide grooves. The guide pins are fixed on the outer plate (602), and the outer plate (602) slides along the horizontal slide groove through the guide pins.

2. The compressor performance automatic testing equipment according to claim 1, characterized in that: A plurality of spiral protrusions are provided on the inner wall surface of the spherical cover shell (1), and the spiral direction of the spiral protrusions is opposite to the rotation direction of the spherical cover shell (1).

3. The compressor performance automatic testing equipment according to claim 1 or 2, characterized in that: A plurality of balls are arranged between the spherical cover shell (1) and the annular slide groove.

4. The compressor performance automatic testing equipment according to claim 1, characterized in that: A heating device and an electromagnet are provided at the bottom of the fixing frame (2).

5. The compressor performance automatic testing equipment according to claim 1, characterized in that: The outer surfaces of the rotating wheel and the friction wheel of the housing driving device (4) are both provided with patterns for increasing friction.

6. The compressor performance automatic testing equipment according to claim 1, characterized in that: The surfaces of the outer plate (602) and the inner lining plate (603) are both paved with elastic material layers.

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