A fully enclosed compressor verticality testing fixture

Abstract

This utility model discloses a fully enclosed compressor verticality testing fixture, comprising a single-acting cylinder, a collet mounted on the piston rod of the single-acting cylinder, the main body of the collet being cylindrical, the lower section of the collet being a clamping part, the outer surface of the clamping part being a downwardly tapered conical surface, and the clamping part having multiple slits along its axial direction; a sleeve mounted on the cylinder barrel of the single-acting cylinder, the main body of the sleeve being cylindrical, the lower section of the sleeve being a constricted portion, the inner surface of the constricted portion being a downwardly tapered conical surface; the collet being disposed inside the sleeve, and the outer surface of the clamping part fitting against the inner surface of the constricted portion; a dial indicator being fixed to the outside of the single-acting cylinder, the axis of the dial indicator probe being parallel to the axis of the single-acting cylinder. This utility model can conveniently clamp the compressor spindle without causing surface damage to the compressor spindle; and conveniently and accurately detect the verticality of the compressor spindle.

Description

Technical Field

[0001] This utility model relates to a fully enclosed compressor verticality testing fixture, belonging to the field of compressor verticality testing technology. Background Technology

[0002] Before assembling the compressor, the spindle needs to be checked for perpendicularity. Using a perpendicularity checking fixture can significantly improve the alignment efficiency of the compressor during assembly. In the existing technology, the compressor spindle is generally clamped using a clamping table. However, clamping using a clamping table has the following drawbacks:

[0003] First, using a set bolt directly against the crankshaft during clamping leaves marks on the bearing housing and damages the crankshaft. Second, the bolt needs to be fixed to the shaft body, and there is also an upper support on the outside, which limits the space. Moreover, special tools are required for tightening during clamping, making the clamping fixture extremely difficult and time-consuming. In addition, because the compressor crankshaft assembly is a permanent magnet, the fixture needs to be very firmly fixed to the bearing housing. The current method only uses one bolt to tighten it to the bearing housing, and the fixture often falls off the crankshaft during use, resulting in inaccurate monitoring data.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides a fully enclosed compressor verticality detection fixture, which facilitates the clamping of the compressor spindle without causing surface damage to the compressor spindle; and conveniently and accurately detects the verticality of the compressor spindle.

[0006] To solve the above technical problems, the present invention adopts the following technical solution:

[0007] A fully enclosed compressor verticality testing fixture includes a single-acting cylinder, a collet mounted on the piston rod of the single-acting cylinder, the main body of the collet being cylindrical, the lower section of the collet being a clamping part, the outer surface of the clamping part being a downwardly tapered conical surface, and the clamping part having multiple slits along its axial direction.

[0008] A sleeve is installed on the cylinder barrel of a single-acting cylinder. The main body of the sleeve is cylindrical, and the lower section of the sleeve is a constricted section. The inner surface of the constricted section is a tapered surface that gradually narrows downward. The collet is located inside the sleeve, and the outer surface of the clamping part is in contact with the inner surface of the constricted section.

[0009] A dial indicator is fixed to the outside of the single-acting cylinder, and the axis of the dial indicator probe is set parallel to the axis of the single-acting cylinder.

[0010] Furthermore, a cylinder seat is mounted on the cylinder barrel of the single-acting cylinder, and the upper end of the jacket is mounted on the lower end of the cylinder seat.

[0011] Furthermore, the cylinder barrel and cylinder seat of a single-acting cylinder are connected by threads, and the jacket and cylinder seat are also connected by threads.

[0012] Furthermore, a push sleeve is installed on the piston rod, and an installation hole is provided at the rotation center of the push sleeve. The installation hole of the push sleeve passes through the piston rod, and a nut is installed at the end of the piston rod to fix the push sleeve.

[0013] Furthermore, the lower end of the push sleeve extends inward to form a protruding retaining ring, and the outer side of the upper end of the collet is provided with an annular retaining groove, into which the protruding retaining ring is embedded.

[0014] Furthermore, a collar is fixedly fitted on the outside of the jacket, and one side of the collar extends outward to form a mounting base, on which the dial indicator is mounted.

[0015] Furthermore, the probe axis of the dial indicator is parallel to the central axis of the collar.

[0016] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0017] The jacket is fixed relative to the single-acting cylinder. When the piston rod of the single-acting cylinder extends, the piston rod pushes the collet to slide downward relative to the jacket. The inner diameter of the lower section of the jacket becomes smaller, causing the clamping part of the collet to contract under the action of the jacket, thereby clamping the compressor's main shaft. This makes it easy and accurate to detect the perpendicularity of the compressor's main shaft relative to the upper support end face of the compressor, without causing surface damage to the compressor's main shaft.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 yes Figure 1 A sectional view along the middle AA;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0022] In the picture,

[0023] 1-Single-acting cylinder, 2-Dial indicator, 3-Cylinder seat, 4-Clipper, 401-Narrowing part, 5-Ring, 501-Mounting seat, 6-Push sleeve, 601-Protruding retaining ring, 7-Piston rod, 8-Nut, 9-Collet clamp, 901-Slot, 902-Clamping part. Detailed Implementation

[0024] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0025] like Figure 1-3 As shown, this utility model provides a fully enclosed compressor verticality detection fixture, including a single-acting cylinder 1, a collet 9 installed on the piston rod 7 of the single-acting cylinder 1, the main body of the collet 9 is cylindrical, the lower section of the collet 9 is a clamping part 902, the outer surface of the clamping part 902 is a tapered surface that tapers downward, and the clamping part 902 is provided with multiple slots 901 along its axial direction;

[0026] A sleeve 4 is installed on the cylinder of a single-acting cylinder 1. The main body of the sleeve 4 is cylindrical, and the lower section of the sleeve 4 is a constricted portion 401. The inner surface of the constricted portion 401 is a tapered surface that gradually narrows downward. A collet 9 is disposed inside the sleeve 4, and the outer surface of the clamping portion 902 is in contact with the inner surface of the constricted portion 401.

[0027] A dial indicator 2 is fixed to the outside of the single-acting cylinder 1, and the axis of the probe of the dial indicator 2 is set parallel to the axis of the single-acting cylinder 1.

[0028] During clamping, the compressor's main shaft is inserted into the collet 9, and the sleeve 4 is fixed relative to the single-acting cylinder 1. When the piston rod 7 of the single-acting cylinder 1 extends, the piston rod 7 pushes the collet 9 to slide downward relative to the sleeve 4, and the inner diameter of the lower section of the sleeve 4 becomes smaller, so that the clamping part 902 of the collet 9 contracts under the action of the sleeve 4, thereby clamping the compressor's main shaft.

[0029] Furthermore, a cylinder seat 3 is mounted on the cylinder barrel of the single-acting cylinder 1, and the upper end of the jacket 4 is mounted on the lower end of the cylinder seat 3.

[0030] The cylinder barrel of the single-acting cylinder 1 is connected to the cylinder seat 3 by threads, and the sleeve 4 is also connected to the cylinder seat 3 by threads. The threaded connection ensures the coaxiality of the cylinder barrel, cylinder seat 3 and sleeve 4, thus guaranteeing measurement accuracy.

[0031] A push sleeve 6 is installed on the piston rod 7. The push sleeve 6 has an installation hole at its rotation center. The installation hole of the push sleeve 6 passes through the piston rod 7. A nut 8 is installed at the end of the piston rod 7 to fix the push sleeve 6. The collet 9 is installed on the push sleeve 6, and the push sleeve 6 drives the collet 9 to move up and down.

[0032] The lower end of the push sleeve 6 extends inward to form a protruding retaining ring 601, and the outer side of the upper end of the collet 9 is provided with an annular retaining groove. The protruding retaining ring 601 is embedded in the annular retaining groove, so that the collet 9 and the push sleeve 6 move synchronously.

[0033] A collar 5 is fixedly fitted onto the outside of the sleeve 4. One side of the collar 5 extends outward to form a mounting base 501, on which the dial indicator 2 is mounted. The probe axis of the dial indicator 2 is parallel to the central axis of the collar 5.

[0034] The specific working principle of this utility model:

[0035] The compressor spindle to be tested is located inside the compressor housing, with its end extending beyond the upper support surface of the compressor. During testing, the compressor spindle is clamped using the collet 9 of this fixture, making it parallel to the central axis of the single-acting cylinder 1. Simultaneously, the probe of the dial indicator 2 is placed against the upper support surface of the compressor, thus allowing the perpendicularity of the compressor spindle to the upper support surface to be detected. During testing, rotating this fixture one full turn causes the probe of the dial indicator 2 to rotate one full turn on the upper support surface of the compressor, thereby conveniently and accurately detecting the perpendicularity of the compressor spindle relative to the upper support surface of the compressor without causing surface damage to the compressor spindle.

[0036] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A totally enclosed compressor perpendicularity detection tool, characterized in that: Includes a single-acting cylinder (1), and a collet (9) is installed on the piston rod (7) of the single-acting cylinder (1). The main body of the collet (9) is cylindrical, and the lower section of the collet (9) is a clamping part (902). The outer surface of the clamping part (902) is a tapered surface that tapers downward, and the clamping part (902) is provided with multiple slots (901) along its axial direction. A sleeve (4) is installed on the cylinder of a single-acting cylinder (1). The main body of the sleeve (4) is cylindrical, and the lower section of the sleeve (4) is a constricted section (401). The inner surface of the constricted section (401) is a tapered surface that gradually narrows downward. A collet (9) is disposed inside the sleeve (4), and the outer surface of the clamping part (902) is in contact with the inner surface of the constricted section (401). A dial indicator (2) is fixed on the outside of the single-acting cylinder (1), and the axis of the probe of the dial indicator (2) is set parallel to the axis of the single-acting cylinder (1).

2. A verticality detection tool for a totally-enclosed compressor as set forth in claim 1, characterized in that: The single-acting cylinder (1) has a cylinder seat (3) mounted on its cylinder barrel, and the upper end of the jacket (4) is mounted on the lower end of the cylinder seat (3).

3. A verticality detection tool for a totally-enclosed compressor as set forth in claim 2, characterized in that: The cylinder barrel of the single-acting cylinder (1) is connected to the cylinder seat (3) by a thread, and the sleeve (4) is also connected to the cylinder seat (3) by a thread.

4. A verticality detection tool for a totally-enclosed compressor as set forth in claim 1, characterized in that: A push sleeve (6) is installed on the piston rod (7). The push sleeve (6) has an installation hole at its rotation center. The installation hole of the push sleeve (6) passes through the piston rod (7). A nut (8) is installed at the end of the piston rod (7) to fix the push sleeve (6).

5. A verticality detection tool for a totally-enclosed compressor as set forth in claim 4, characterized in that: The lower end of the push sleeve (6) extends inward to form a protruding retaining ring (601), and the outer side of the upper end of the collet (9) is provided with an annular retaining groove, and the protruding retaining ring (601) is embedded in the annular retaining groove.

6. A verticality detection tool for a totally-enclosed compressor as set forth in claim 1, characterized in that: A collar (5) is fixedly fitted on the outside of the sleeve (4), and one side of the collar (5) extends outward to form a mounting base (501), on which the dial indicator (2) is mounted.

7. A verticality detection tool for a totally-enclosed compressor as set forth in claim 6, characterized in that: The probe axis of the dial indicator (2) is parallel to the central axis of the collar (5).

Images