A positioning tool for compressor crankshaft detection

Abstract

The utility model relates to the quality detection technical field of compressor crankshaft, specifically relates to a kind of positioning tool for compressor crankshaft detection, including the connection ring that can be opened and closed is arranged above intermediate connecting piece, connection ring is connected by tightening fastening bolt, so that connection ring can clamp the main journal of compressor crankshaft, and after connection ring is sleeved on the main journal of compressor crankshaft, although it is still possible to slide in left and right direction, but the displacement of compressor crankshaft in up and down and front and back direction is completely limited. Still be provided with clamping plate on the left and right sides of intermediate connecting piece, two balance blocks of compressor crankshaft are supported by clamping plate, so the displacement of compressor crankshaft in left and right direction is completely limited. Clamping plate cooperates connection ring and limits compressor crankshaft in three dimensions of up and down, left and right, front and back, so that compressor crankshaft will not displace no matter receive which direction and angle force.

Description

Technical Field

[0001] This utility model relates to the field of compressor crankshaft quality inspection technology, and in particular to a positioning fixture for compressor crankshaft inspection. Background Technology

[0002] After production or before assembly, the compressor crankshaft undergoes numerous tests, including geometric accuracy testing, material performance testing, dynamic characteristic testing, and assembly compatibility testing. Many of these tests have high precision standards, thus requiring high stability and positioning accuracy from the compressor crankshaft. For example, during geometric accuracy testing, even a slight displacement of the compressor crankshaft can significantly interfere with the test results.

[0003] The problem is that many tests require contact with the compressor crankshaft and apply forces of varying degrees. Therefore, if the clamps or positioning components used for compressor crankshaft testing are not tight enough, these applied forces can easily cause the compressor crankshaft to move or deflect, affecting the test results. On the other hand, clamping the crankshaft too tightly can leave indentations, affecting its appearance.

[0004] Moreover, most current positioning fixtures only clamp the compressor crankshaft in one dimension, which makes the stability of the compressor crankshaft in the other two dimensions somewhat lacking. For example, after clamping the compressor crankshaft from the left and right directions, if the compressor crankshaft is subjected to forces in the up, down and back directions, it is still easy to move in the up, down and back directions. The same applies when clamping the compressor crankshaft from the up, down or back directions. Therefore, it is difficult to guarantee the overall stability of the compressor crankshaft in all dimensions. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a positioning fixture for compressor crankshaft inspection, so as to solve the technical problem that most conventional positioning fixtures in the prior art only clamp the compressor crankshaft in one dimension, which makes it easy for the force applied in the other two dimensions during inspection to cause displacement of the compressor crankshaft and thus affect the inspection results.

[0006] To achieve the above objectives, this utility model provides a positioning fixture for compressor crankshaft inspection, including a telescopic connecting arm that drives the entire positioning fixture to move back and forth. The positioning fixture further includes:

[0007] An intermediate connector is fixedly connected to the front end of the telescopic connecting arm;

[0008] A connecting ring is provided above the intermediate connector. The connecting ring can be opened or closed into a ring to surround and clamp the main journal of the compressor crankshaft, so as to prevent the compressor crankshaft from displacing in the front-back and up-down directions.

[0009] The clamps located on both sides of the intermediate connector are telescopically mounted on the intermediate connector via movable rods. They are used to support the two balance blocks of the compressor crankshaft and prevent the compressor crankshaft from shifting in the left and right directions.

[0010] Furthermore, the connecting ring consists of a fixed ring and a movable ring. The fixed ring is fixedly connected to the upper end of the intermediate connecting member, and the movable ring is rotatably connected to the fixed ring. The fixed ring and the movable ring are two opposing semicircular rings.

[0011] Furthermore, each of the outer ends of the retaining ring and the movable ring is fixedly connected to a connecting lug, and each of the two connecting lugs is provided with a screw hole of the same size at a corresponding position, and a fastening bolt is provided accordingly.

[0012] Furthermore, movable rod sleeves are fixedly connected to both sides of the intermediate connector, and the inner end of the movable rod is located inside the movable rod sleeve and is slidably connected to the movable rod sleeve.

[0013] Furthermore, a screw sleeve is fixedly connected to the intermediate connecting member, the screw sleeve is located on the other side of the intermediate connecting member relative to the telescopic connecting arm, and a screw is threaded onto the screw sleeve.

[0014] Furthermore, the intermediate connecting member is provided with a hydraulic chamber, which is connected to the inner cavity of the movable rod sleeve and the screw sleeve, and the hydraulic chamber is filled with hydraulic medium.

[0015] Furthermore, a piston plate is slidably connected inside the movable rod sleeve, and the piston plate is fixedly connected to the inner end of the movable rod. A piston plate is also slidably connected inside the screw sleeve, and the piston plate is fixedly connected to the inner end of the screw. A knob is fixedly connected to the outer end of the screw.

[0016] Furthermore, an anti-slip pad is fixedly connected to the outer surface of the clamp, and the outer surface of the anti-slip pad is provided with a grid-like anti-slip pattern.

[0017] The beneficial effects of this utility model are as follows: 1. A connecting ring that can be opened and closed is provided above the intermediate connecting piece. When the connecting ring is opened, the main journal of the compressor crankshaft is placed in it. Then the connecting ring is closed, and the fixed ring and the movable ring can clamp the main journal of the compressor crankshaft by tightening the fastening bolt. Although the connecting ring may still slide in the left and right directions after it is wrapped around the main journal of the compressor crankshaft, it completely restricts the displacement of the compressor crankshaft in the up and down and front and back directions.

[0018] 2. Clamping plates are also installed on both sides of the intermediate connecting piece. These clamping plates support the two balance blocks of the compressor crankshaft, thus completely restricting the lateral displacement of the compressor crankshaft. The clamping plates, together with the connecting ring, restrict the compressor crankshaft in three dimensions: up / down, left / right, and front / back, ensuring that the compressor crankshaft will not shift regardless of the direction or angle of force applied.

[0019] 3. The driving force for the clamping plate to move to the end and support the compressor crankshaft is achieved by turning the screw with a knob. The screw drives the piston plate to move, and the pressure is transmitted to the movable rod through the hydraulic medium, which ultimately drives the clamping plate to move. The operation is simple, convenient and labor-saving. In addition, anti-slip pads are provided on the outer surface of the clamping plate, which not only prevents slipping but also avoids pressing indentations on the two balance blocks of the compressor crankshaft. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram illustrating the principle of the device for clamping and positioning the crankshaft of the main compressor.

[0022] Figure 2 This is a schematic diagram of the overall structure and principle of the device of this utility model.

[0023] Figure 3 This is a schematic diagram of the internal structure of the intermediate connecting member in the device of this utility model.

[0024] Figure 4 This is a schematic diagram illustrating the connection and driving structure of the clamping plate in the device of this utility model.

[0025] The diagram is marked as follows:

[0026] 01. Compressor crankshaft; 101. Telescopic connecting arm; 102. Intermediate connecting piece; 103. Loop retaining ring; 104. Loop movable ring; 105. Fastening bolt; 106. Movable rod sleeve; 107. Movable rod; 108. Clamping plate; 109. Anti-slip pad; 110. Screw sleeve; 111. Knob; 112. Screw; 113. Hydraulic chamber; 114. Piston plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] The first aspect of this utility model is as follows: Figure 1 , Figure 2 and Figure 3 As shown, many tests require contact with the compressor crankshaft and apply forces of varying degrees to it. Furthermore, most current positioning fixtures only clamp the compressor crankshaft in one dimension, resulting in insufficient stability of the crankshaft in the other two dimensions. Therefore, this invention designs an intermediate connector 102 and provides a connecting ring above it.

[0030] The connecting ring consists of a retaining ring 103 and a movable ring 104. The retaining ring 103 is fixedly connected to the upper end of the intermediate connecting member 102, while the movable ring 104 is rotatably connected to the retaining ring 103. The retaining ring 103 and the movable ring 104 are two opposing semicircular rings.

[0031] Preferably, the outer ends of the retaining ring 103 and the movable ring 104 are each fixedly connected to a connecting lug, and each of the two connecting lugs is provided with a screw hole of the same size at a corresponding position, and is equipped with a fastening bolt 105.

[0032] Therefore, the connecting ring composed of the retaining ring 103 and the movable ring 104 can be opened and closed. When the retaining ring 103 and the movable ring 104 are opened, the main journal of the compressor crankshaft 01 is placed inside. Then the connecting ring is closed, and the retaining ring 103 and the movable ring 104 can clamp the main journal of the compressor crankshaft 01 by tightening the fastening bolt 105. After the connecting ring is fitted onto the main journal of the compressor crankshaft 01, although it may still slide in the left and right directions, it completely restricts the displacement of the compressor crankshaft 01 in the up and down and front and back directions.

[0033] Additionally, clamping plates 108 are installed on both sides of the intermediate connecting member 102. These clamping plates 108 are telescopically mounted on the intermediate connecting member 102 via movable rods 107, serving to support the two balance blocks of the compressor crankshaft 01, thus completely restricting the lateral displacement of the compressor crankshaft 01. The clamping plates 108, in conjunction with the connecting ring, restrict the compressor crankshaft 01 in three dimensions: up / down, left / right, and front / back, ensuring that the compressor crankshaft 01 will not shift regardless of the direction or angle of force applied.

[0034] The second aspect of this utility model is as follows: Figure 2 , Figure 3 and Figure 4 As shown, in order to facilitate the use of the positioning mechanism, the entire positioning mechanism is fixedly connected to the front end of the telescopic connecting arm 101 through the intermediate connecting piece 102.

[0035] Movable rod sleeves 106 are fixedly connected to both sides of the intermediate connecting member 102. The clamping plate 108 is mounted on the movable rod sleeve 106 via a movable rod 107. The inner end of the movable rod 107 is located inside the movable rod sleeve 106 and is slidably connected to the movable rod sleeve 106. In addition, a screw sleeve 110 is fixedly connected to the intermediate connecting member 102. The screw sleeve 110 is located on the other side of the intermediate connecting member 102 relative to the telescopic connecting arm 101, and a screw 112 is threadedly connected to the screw sleeve 110.

[0036] The intermediate connector 102 has a hydraulic chamber 113, which communicates with the inner cavities of the movable rod sleeve 106 and the screw sleeve 110, and is filled with hydraulic medium. A piston plate 114 is slidably connected inside the movable rod sleeve 106, and is fixedly connected to the inner end of the movable rod 107. A piston plate 114 is also slidably connected inside the screw sleeve 110, and is fixedly connected to the inner end of the screw 112. A knob 111 is fixedly connected to the outer end of the screw 112.

[0037] Preferably, an anti-slip pad 109 is fixedly connected to the outer surface of the clamping plate 108, and the outer surface of the anti-slip pad 109 is provided with a grid-like anti-slip texture. This provides anti-slip while preventing indentations on the two balance blocks of the compressor crankshaft 01.

[0038] The driving force for the clamping plate 108 to move to finally support the compressor crankshaft 01 is achieved by rotating the screw 112 through the knob 111. The screw 112 drives the piston plate 114 to move, and the pressure is transmitted to the movable rod 107 through the hydraulic medium, which in turn drives the clamping plate 108 to move. The operation is simple, convenient and labor-saving.

[0039] In summary, this invention features a connecting ring that can be opened and closed above the intermediate connecting member 102. When the connecting ring is open, the main journal of the compressor crankshaft 01 is inserted into it. Then, the connecting ring closes, and by tightening the fastening bolt 105, the retaining ring 103 and the movable ring 104 clamp the main journal of the compressor crankshaft 01. Although the connecting ring may still slide in the left-right direction after it has closed over the main journal, it completely restricts the displacement of the compressor crankshaft 01 in the up-down and back-forward directions. Clamping plates 108 are also provided on the left and right sides of the intermediate connecting member 102. These clamping plates 108 support the two balance blocks of the compressor crankshaft 01, further restricting its displacement in the left-right direction. The clamping plates 108, in conjunction with the connecting ring, restrict the compressor crankshaft 01 in the up-down, left-right, and back-forward dimensions, ensuring that the compressor crankshaft 01 will not displace regardless of the direction or angle of force applied.

[0040] The driving force for the clamping plate 108 to move to finally support the compressor crankshaft 01 is achieved by rotating the screw 112 via the knob 111. The screw 112 drives the piston plate 114 to move, and the pressure is transmitted to the movable rod 107 through the hydraulic medium, ultimately driving the clamping plate 108 to move. The operation is simple, convenient, and labor-saving. In addition, anti-slip rubber pads 109 are provided on the outer surface of the clamping plate 108, which prevents slipping while avoiding indentations on the two balance blocks of the compressor crankshaft 01.

[0041] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention includes the claims being limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0042] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A positioning tool for compressor crankshaft detection, comprising a telescopic connecting arm (101) that drives the entire positioning tool to move forward and backward, characterized in that, The positioning fixture also includes: An intermediate connector (102) is fixedly connected to the front end of the telescopic connecting arm (101); A connecting ring is provided above the intermediate connecting member (102). The connecting ring can be opened or closed into a ring to surround and clamp the main journal of the compressor crankshaft (01) to prevent the compressor crankshaft (01) from displacing in the front-back and up-down directions. The clamping plates (108) located on both sides of the intermediate connector (102) are telescopically mounted on the intermediate connector (102) via movable rods (107) to support the two balance blocks of the compressor crankshaft (01) and prevent the compressor crankshaft (01) from shifting in the left and right directions.

2. The positioning tool for compressor crankshaft inspection of claim 1, wherein, The connecting ring consists of a fixed ring (103) and a movable ring (104). The fixed ring (103) is fixedly connected to the upper end of the intermediate connecting member (102), and the movable ring (104) is rotatably connected to the fixed ring (103). The fixed ring (103) and the movable ring (104) are two opposing semicircular rings.

3. The positioning tool for compressor crankshaft inspection of claim 2, wherein, The outer ends of the fixed ring (103) and the movable ring (104) are each fixedly connected to a connecting lug. Each of the two connecting lugs has a screw hole of the same size at a corresponding position, and a fastening bolt (105) is provided.

4. The positioning tool for compressor crankshaft inspection of claim 1, wherein, The two sides of the intermediate connector (102) are fixedly connected to movable rod sleeves (106), and the inner end of the movable rod (107) is located inside the movable rod sleeve (106) and is slidably connected to the movable rod sleeve (106).

5. The positioning tool for compressor crankshaft inspection of claim 4, wherein, A screw sleeve (110) is fixedly connected to the intermediate connector (102). The screw sleeve (110) is located on the other side of the intermediate connector (102) relative to the telescopic connecting arm (101). A screw (112) is threaded onto the screw sleeve (110).

6. The positioning tool for compressor crankshaft inspection of claim 5, wherein, The intermediate connector (102) is provided with a hydraulic chamber (113), which is connected to the inner cavity of the movable rod sleeve (106) and the screw sleeve (110), and the hydraulic chamber (113) is filled with hydraulic medium.

7. The positioning tool for compressor crankshaft inspection of claim 6, wherein, A piston plate (114) is slidably connected inside the movable rod sleeve (106), and the piston plate (114) is fixedly connected to the inner end of the movable rod (107). A piston plate (114) is also slidably connected inside the screw sleeve (110), and the piston plate (114) is fixedly connected to the inner end of the screw (112). A knob (111) is fixedly connected to the outer end of the screw (112).

8. The positioning tool for compressor crankshaft inspection of claim 1, wherein, The outer surface of the clamp (108) is fixedly connected to an anti-slip pad (109), and the outer surface of the anti-slip pad (109) is provided with a grid-like anti-slip pattern.

Images