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CN-122015620-A - Compressor body bearing hole coaxiality inspection structure and method

CN122015620ACN 122015620 ACN122015620 ACN 122015620ACN-122015620-A

Abstract

The application provides a compressor body bearing hole coaxiality inspection structure and method, which belong to the technical field of bearing hole coaxiality measurement and comprise a crankshaft, a bearing seat, a positioning block, an adjusting frame and a measuring mechanism, wherein the positioning block is clamped with a split surface of the bearing seat to establish a stable and repeatable installation standard, the adjusting frame is used for adjustably connecting the measuring mechanism on the positioning block, a measuring head of the measuring mechanism is propped against the surface of the diameter of the crankshaft to detect gaps between the surfaces of the crankshaft on the left side and the right side of a central line of the crankshaft and the horizontal position of the surface of the bearing hole, and the measuring mechanism is used for displaying data to directly measure the horizontal offset of the center of the bearing hole so as to detect the coaxiality of the bearing hole, thereby avoiding the condition of inaccurate measurement caused by inconsistent insertion depth and large human judgment error of a feeler gauge. The coaxiality inspection structure and the coaxiality inspection method are high in universality and convenient to operate, the dependence of field detection on special tooling tiles is reduced, and the detection efficiency and the data reliability of the coaxiality of the bearing hole of the compressor body are improved.

Inventors

  • PAN WENHUI
  • LIU BO

Assignees

  • 沈阳鼓风机集团往复机有限公司
  • 沈鼓集团股份有限公司

Dates

Publication Date
20260512
Application Date
20260309

Claims (10)

  1. 1. The utility model provides a compressor fuselage bearing hole axiality inspection structure which characterized in that, compressor fuselage bearing hole axiality inspection structure includes: the crankshaft is arranged in the bearing seat; The positioning block is arranged on the split surface of the bearing hole of the machine body and is clamped with the bearing seat; The first end of the adjusting frame is connected with the positioning block; and the measuring mechanism is connected with the second end of the adjusting frame, and a measuring head of the measuring mechanism is propped against the crankshaft.
  2. 2. A compressor body bearing bore coaxiality inspection structure as set forth in claim 1, wherein, The measuring mechanism is a dial indicator.
  3. 3. A compressor body bearing bore coaxiality inspection structure as set forth in claim 1, wherein, The positioning block extends along the axial direction of the bearing seat.
  4. 4. A compressor body bearing bore coaxiality inspection structure as set forth in claim 3, further comprising: The cross beam is arranged on the bottom surface of the positioning block, the cross beam is parallel to the length direction of the positioning block, the cross beam is positioned on one side of the positioning block, which is close to the crankshaft, and the cross beam is attached to the hole surface of the bearing hole.
  5. 5. A compressor body bearing bore coaxiality inspection structure as set forth in claim 1, wherein, The first end of the adjusting frame is connected to the center of the cross section of the positioning block.
  6. 6. A compressor body bearing bore coaxiality inspection structure as set forth in claim 1, wherein, The adjusting frame is detachably connected with the positioning block.
  7. 7. The compressor body bearing hole coaxiality inspection structure according to claim 6, the compressor body bearing hole coaxiality inspection structure is characterized by further comprising: The connecting hole group comprises a plurality of connecting holes, and the connecting holes are arranged on the axial direction of the positioning block at equal intervals along the length direction of the positioning block.
  8. 8. A compressor body bearing bore coaxiality inspection structure as set forth in claim 7, wherein, The inner wall of the connecting hole is provided with an internal thread, the first end of the adjusting frame is provided with an external thread, and the adjusting frame is in threaded connection with one of the connecting holes.
  9. 9. The compressor body bearing hole coaxiality inspection structure according to any one of claims 1 to 8, wherein, The adjusting frame comprises three rotating arms, the three rotating arms are sequentially connected in a rotating mode through a hinge mechanism, the rotating arm at the first end is connected with the positioning block, and the rotating arm at the second end is connected with the measuring mechanism.
  10. 10. A compressor body bearing hole coaxiality inspection method, characterized by being applied to the compressor body bearing hole coaxiality inspection structure as claimed in any one of claims 1 to 9, comprising: placing a positioning block on a split surface of a bearing hole of a machine body, and clamping the positioning block on a bearing seat; adjusting the adjusting frame to enable a measuring head of the measuring mechanism to be abutted against the diameter surface of the crankshaft, zeroing the measuring mechanism, and obtaining a first measuring reading; turning the positioning block, moving the positioning block to a split surface on the other side of the bearing hole of the machine body, and clamping the positioning block on a bearing seat; Abutting the measuring head against a diametric surface of the crankshaft to obtain a second measurement reading; And determining the horizontal offset of the center of the bearing hole relative to the center line of the crankshaft according to the difference value of the first measurement reading and the second measurement reading.

Description

Compressor body bearing hole coaxiality inspection structure and method Technical Field The application belongs to the technical field of bearing hole coaxiality measurement, and particularly relates to a compressor body bearing hole coaxiality inspection structure and method. Background For reciprocating compressor equipment which runs for many years and for a long period, the manufacturing precision can be seriously deviated due to the influence of multiple factors such as foundation settlement of the equipment, the effect of load stress and the like, and particularly, the service life of a crankshaft main bearing bush is seriously influenced by the change of the relative coaxiality of main bearing holes of a compressor body. Along with the deviation change of the coaxiality, the service life of the main shaft bushing is reduced from two years to three years to two months to three months, even twenty days. At present, as shown in fig. 1, a tooling bush is generally placed in a bearing hole of a bearing seat of a detected machine body, then a clearance difference value at two horizontal sides of a crankshaft is detected by using a feeler gauge, so that the relative coaxiality is measured, however, the feeler gauge has no scale, the insertion depth is difficult to control, and the judgment is needed to be carried out by relying on the experience of an operator, so that the measurement accuracy of the coaxiality of the bearing hole of the machine body has a certain limitation. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art or related art. To this end, a first aspect of the present invention provides a compressor body bearing bore coaxiality inspection structure. A second aspect of the present invention provides a compressor body bearing bore coaxiality inspection method. In view of this, a first aspect according to an embodiment of the present application proposes a compressor body bearing hole coaxiality inspection structure including: The crankshaft and the bearing seat are arranged in the bearing seat; the positioning block is arranged on the split surface of the bearing hole of the machine body and is clamped with the bearing seat; the first end of the adjusting frame is connected with the positioning block; And the measuring mechanism is connected with the second end of the adjusting frame, and a measuring head of the measuring mechanism is propped against the crankshaft. In one possible embodiment, the measuring means is a dial gauge. In one possible embodiment, the positioning block extends in the axial direction of the bearing block. In one possible embodiment, the compressor body bearing bore coaxiality inspection structure further comprises: The cross beam is arranged on the bottom surface of the positioning block, is parallel to the length direction of the positioning block, is positioned on one side of the positioning block, which is close to the crankshaft, and is attached to the hole surface of the bearing hole. In one possible embodiment, the first end of the adjusting bracket is connected at the center of the cross section of the positioning block. In one possible embodiment, the adjusting bracket is detachably connected to the positioning block. In one possible embodiment, the compressor body bearing bore coaxiality inspection structure further comprises: the connecting hole group comprises a plurality of connecting holes which are arranged on the axial direction of the positioning block at equal intervals along the length direction of the positioning block. In a possible embodiment, the inner wall of the connecting hole is provided with an internal thread, the first end of the adjusting bracket is provided with an external thread, and the adjusting bracket is in threaded connection with one of the connecting holes. In one possible embodiment, the spacing between the connection holes is 18-22 mm. In one possible embodiment, the adjusting bracket comprises three rotating arms which are sequentially connected in a rotating way through a hinge mechanism, the rotating arm at the first end is connected with the positioning block, and the rotating arm at the second end is connected with the measuring mechanism. According to a second aspect of the embodiment of the present application, a method for inspecting coaxiality of a bearing hole of a compressor body is provided, which is applied to the structure for inspecting coaxiality of a bearing hole of a compressor body according to any one of the above technical schemes, and includes: Placing the positioning block on a split surface of a bearing hole of the machine body, and clamping the positioning block on a bearing seat; the adjusting frame is adjusted to enable a measuring head of the measuring mechanism to be abutted against the diameter surface of the crankshaft, the measuring mechanism is zeroed, and a first measuring reading is obtained; Turning the positioning blo