Modular, easy-to-install compressor crankshaft

Abstract

The application relates to the technical field of compressor crankshafts, and discloses a modular compressor crankshaft convenient to install, which comprises a main shaft and a rotating plate located at the top of the main shaft, the top of the rotating plate is eccentrically provided with a connecting shaft, a connecting rod is rotationally arranged on the connecting shaft, a slot is formed through the rotating plate, the top end of the main shaft is movably inserted into the slot, a limiting plane is formed on the main shaft, and a blocking plane coupled with the limiting plane is formed on the inner wall of the slot; the main shaft is installed in the slot in the rotating plate, the abutment of the limiting plane and the blocking plane can effectively prevent relative rotation between the main shaft and the rotating plate, and the two can stably and synchronously rotate; the main shaft is prevented from penetrating out of the slot through the blocking of the shielding part, the top end of the main shaft is limited in the slot, and the main shaft and the rotating plate are stably connected as a whole through the connection between the cover and the main shaft, so that the main shaft and the rotating plate are convenient to install and disassemble, and the overall strength is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of compressor crankshaft technology, specifically to a modular compressor crankshaft that is easy to install. Background Technology

[0002] The crankshaft is the main component that transmits the power of the compressor (such as a refrigerator compressor). When the compressor is running, the crankshaft is subjected to a large torsional force, especially the part that contacts the upper bearing. Therefore, in the compressor system, the crankshaft, connecting rod, and piston system are the most vulnerable components, and the degree of damage among the three is not synchronized. The crankshaft is often the most severely damaged.

[0003] A crankshaft is generally composed of a main shaft, rotating parts, and connecting shafts. In the existing technology, when the crankshaft is damaged or deformed, it must be replaced as a whole because the traditional crankshaft is integrally molded. This not only results in high replacement costs, but also makes the disassembly and assembly of the crankshaft with other mechanisms quite troublesome.

[0004] Based on this, we propose a modular compressor crankshaft that is easy to install. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a modular compressor crankshaft that is easy to install, featuring modular design and convenient disassembly and replacement.

[0007] (II) Technical Solution

[0008] To achieve the above-mentioned modular design and facilitate disassembly and replacement, the present invention provides the following technical solution: a modular compressor crankshaft that is easy to install, comprising a main shaft and a rotating plate located at the top of the main shaft, a balance block is provided at the edge of the rotating plate, a connecting shaft is eccentrically provided at the top of the rotating plate, a connecting rod is rotatably provided on the connecting shaft, a slot is provided through the rotating plate, the top end of the main shaft is movably inserted into the slot, a limiting plane is formed on the main shaft, and a blocking plane coupled to the limiting plane is formed on the inner wall of the slot;

[0009] An edge recess is formed at the top edge of the slot, and a cover can be detachably installed in the edge recess. The cover has uniformly spaced mounting holes one, and the top of the connecting shaft has uniformly spaced mounting holes two corresponding to the mounting holes one. Mounting bolts can be detachably installed in the mounting holes one and two.

[0010] As a preferred embodiment of the present invention, a limiting block is fixedly installed on the inner wall of the blocking plane, and a block groove coupled to the limiting block is opened on the limiting plane. Bolt holes that communicate with each other are opened on the inner bottom walls of the limiting block and the block groove, and fixing bolts are detachably connected in the bolt holes.

[0011] As a preferred embodiment of the present invention, an anti-detachment post is also fixedly installed at the bottom of the cover, and the installation position of the anti-detachment post corresponds to the opening position of the bolt hole.

[0012] As a preferred embodiment of the present invention, a shielding part is also fixedly provided on the top of the inner wall of the slot, the shielding part being used to prevent the top end of the spindle from passing through the slot.

[0013] As a preferred technical solution of the present invention, three connecting holes are vertically through the connecting shaft, two connecting holes corresponding to the connecting holes are vertically through the rotating plate, and a protrusion is fixedly provided on the outer wall of the main shaft, and two connecting holes corresponding to the connecting holes are vertically through the protrusion.

[0014] Connecting bolts can be detachably installed in connecting hole three, connecting hole two and connecting hole one.

[0015] As a preferred embodiment of the present invention, the shielding part is provided with a through groove corresponding to the connecting hole three, and the top of the main shaft is provided with a connecting hole four corresponding to the through groove. A secondary bolt is detachably installed in the connecting hole three, the through groove and the connecting hole four.

[0016] As a preferred embodiment of the present invention, the top of the block groove is open at the top of the main shaft.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a modular compressor crankshaft that is easy to install, and has the following advantages:

[0019] 1. This modular compressor crankshaft is easy to install. The main shaft is installed in a slot in the rotating plate. Through the fit of the limiting plane and the blocking plane, it can effectively prevent relative rotation between the main shaft and the rotating plate, and enable the two to rotate stably and synchronously.

[0020] The shielding part effectively prevents the spindle from protruding from the slot, confining the top of the spindle within the slot. The connection between the cover and the spindle stably links the spindle and the rotating plate into a single unit, facilitating installation and disassembly while ensuring overall strength.

[0021] 2. This modular compressor crankshaft is easy to install. The connecting shaft is connected to the main shaft and the protrusion on the main shaft through the rotating plate. The main shaft and the protrusion together generate torsional force, which distributes the stress points, effectively reduces the bolt load, and avoids the bending deformation of the main shaft. With the installation of the rotating plate and the counterweight, the stability of the overall system can be further improved, so that the connecting shaft can move smoothly in an eccentric manner. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is an exploded view of the overall structure of the present invention;

[0024] Figure 3 This is an enlarged schematic diagram of the rotating plate portion of the present invention;

[0025] Figure 4 This is a cross-sectional view of the overall structure of the present invention;

[0026] Figure 5 For the present invention Figure 4 Enlarged diagram of point A in the middle.

[0027] In the diagram: 1. Main shaft; 2. Rotating plate; 3. Balance block; 4. Connecting shaft; 5. Connecting rod; 6. Slot; 7. Limiting plane; 8. Blocking plane; 9. Covering part; 10. Limiting block; 11. Block groove; 12. Bolt hole; 13. Edge recess; 14. Cover; 15. Anti-detachment column; 16. Mounting hole one; 17. Mounting hole two; 18. Protrusion; 19. Connecting hole one; 20. Connecting hole two; 21. Connecting hole three; 22. Through groove; 23. Connecting hole four. Detailed Implementation Example

[0028] Please see Figures 1-5 A modular compressor crankshaft that is easy to install includes a main shaft 1 and a rotating plate 2 located on top of the main shaft 1. A connecting shaft 4 is eccentrically arranged on the top of the rotating plate 2. A connecting rod 5 is rotatably arranged on the connecting shaft 4. A piston is arranged at the end of the connecting rod 5. In this embodiment, a balance block 3 is also arranged at the edge of the rotating plate 2. When rotating, the balance block 3 can balance the weight of the connecting shaft 4.

[0029] like Figure 2 and Figure 3As shown, a slot 6 is provided through the rotating plate 2, and the top end of the main shaft 1 is movably inserted into the slot 6. A limiting plane 7 is formed on the main shaft 1, and a blocking plane 8 is formed on the inner wall of the slot 6 that is coupled with the limiting plane 7. The main shaft 1 is installed in the slot 6 in the rotating plate 2. By fitting the limiting plane 7 and the blocking plane 8, relative rotation between the main shaft 1 and the rotating plate 2 can be effectively prevented, and the two can rotate stably and synchronously.

[0030] like Figure 3 As shown, an edge recess 13 is formed at the top edge of the slot 6. A cover 14 is detachably installed in the edge recess 13. Mounting holes 16 are evenly distributed on the cover 14. Mounting holes 17 corresponding to the mounting holes 16 are evenly distributed on the top of the connecting shaft 4. Mounting bolts are detachably installed in the mounting holes 16 and 17. The cover 14 and the main shaft 1 can be connected by the mounting bolts.

[0031] In this embodiment, a blocking part 9 is also fixedly provided on the top of the inner wall of the slot 6. The blocking part 9 can prevent the top end of the spindle 1 from passing through the slot 6 and limit the top end of the spindle 1 to the slot 6.

[0032] After the spindle 1 is installed, the connection between the cover 14 and the spindle 1 can stably connect the spindle 1 and the rotating plate 2 into a whole, which is convenient for installation and disassembly, and also ensures the overall strength.

[0033] In this embodiment, a limiting block 10 is also fixedly installed on the inner wall of the blocking plane 8. A block groove 11 coupled with the limiting block 10 is opened on the limiting plane 7. By the blocking of the limiting block 10 in the block groove 11, the relative movement between the main shaft 1 and the rotating plate 2 can be further prevented, and the limiting plane 7 or the blocking plane 8 can withstand greater torsional force and prevent wear.

[0034] Bolt holes 12 that communicate with each other are provided on the inner bottom wall of the limiting block 10 and the block groove 11. Fixing bolts are detachably connected in the bolt holes 12. By using the fixing bolts, the limiting block 10 can be fixedly installed on the main shaft 1, which further ensures the stability of the overall structural connection and improves the connection strength.

[0035] like Figure 2 As shown, an anti-detachment post 15 is also fixedly installed at the bottom of the cover 14. The installation position of the anti-detachment post 15 corresponds to the opening position of the bolt hole 12. When the cover 14 is installed, the anti-detachment post 15 is inserted into the bolt hole 12, thereby effectively preventing the fixing bolt in the bolt hole 12 from loosening.

[0036] like Figure 5 As shown, the top of the block groove 11 is open at the top of the main shaft 1, which facilitates the entry of the limiting block 10. Example

[0037] Please see Figure 3 and Figure 4 Based on Embodiment 1, this embodiment provides an additional mounting structure for the connecting shaft 4, specifically:

[0038] Three connecting holes 21 are vertically through the connecting shaft 4. Two connecting holes 20, corresponding to the connecting holes 21, are vertically through the rotating plate 2. A protrusion 18 is fixedly provided on the outer wall of the main shaft 1. Two connecting holes 19, corresponding to the connecting holes 20, are vertically through the protrusion 18. Connecting bolts are detachably installed in the connecting holes 21, 20, and 19.

[0039] By means of connecting bolts, connecting hole 3 21, connecting hole 20 and connecting hole 19 can be connected together, thereby connecting shaft 4, rotating plate 2 and protrusion 18.

[0040] The shielding part 9 has a through groove 22 corresponding to the connecting hole 21, and the top of the main shaft 1 has a connecting hole 23 corresponding to the through groove 22. A secondary bolt is detachably installed in the connecting hole 21, the through groove 22 and the connecting hole 23. The connecting hole 21, the through groove 22 and the connecting hole 23 can be connected by the secondary bolt, thereby connecting the connecting shaft 4, the rotating plate 2 and the main shaft 1.

[0041] In this embodiment, the connecting shaft 4 is connected to the main shaft 1 and the protrusion 18 on the main shaft 1 through the rotating plate 2. The main shaft 1 and the protrusion 18 together generate torsional force, which disperses the stress points, effectively reduces the bolt load, and avoids bending deformation of the main shaft 1. With the installation and counterweight of the rotating plate 2, the stability of the overall system can be further improved, so that the connecting shaft 4 can move smoothly in an eccentric manner. At the same time, the modular design of the main shaft 1, the rotating plate 2 and the connecting shaft 4 also makes the whole assembly detachable, which is convenient for maintenance and replacement of individual parts. It is particularly suitable for application in small compressors (such as refrigerator compressors).

[0042] Working principle and usage process of this invention:

[0043] The spindle 1 is installed in the slot 6 inside the rotating plate 2. Through the fit of the limiting plane 7 and the blocking plane 8, the relative rotation between the spindle 1 and the rotating plate 2 can be effectively prevented, and the two can rotate stably and synchronously.

[0044] By blocking the shield 9, the spindle 1 can be effectively prevented from passing through the slot 6, and the top end of the spindle 1 is confined within the slot 6. Then, through the connection between the cover 14 and the spindle 1, the spindle 1 and the rotating plate 2 can be stably connected into a whole, which is convenient for installation and disassembly, and also ensures the overall strength.

[0045] The connecting shaft 4 is connected to the main shaft 1 and the protrusion 18 on the main shaft 1 through the rotating plate 2. The main shaft 1 and the protrusion 18 together generate torsional force, which disperses the stress points, effectively reduces the bolt load, and avoids bending deformation of the main shaft 1. With the installation of the rotating plate 2 and the counterweight, the stability of the overall system can be further improved, so that the connecting shaft 4 can move smoothly in an eccentric manner.

Claims

1. A modular compressor crankshaft for easy installation, comprising a main shaft (1) and a rotating plate (2) located at the top of the main shaft (1), wherein a balance block (3) is provided at the edge of the rotating plate (2), and a connecting shaft (4) is eccentrically provided at the top of the rotating plate (2), and a connecting rod (5) is rotatably provided on the connecting shaft (4), characterized in that: The rotating plate (2) has a through slot (6), the top end of the main shaft (1) is movably inserted into the slot (6), a limiting plane (7) is formed on the main shaft (1), and a blocking plane (8) coupled to the limiting plane (7) is formed on the inner wall of the slot (6). An edge recess (13) is formed at the top edge of the slot (6). A cover (14) is detachably installed in the edge recess (13). Mounting holes one (16) are evenly opened on the cover (14). Mounting holes two (17) corresponding to mounting holes one (16) are evenly opened on the top of the connecting shaft (4). Mounting bolts are detachably installed in mounting holes one (16) and mounting holes two (17). A limiting block (10) is fixedly installed on the inner wall of the blocking plane (8). A block groove (11) coupled with the limiting block (10) is opened on the limiting plane (7). Bolt holes (12) that communicate with each other are opened on the inner bottom walls of the limiting block (10) and the block groove (11). A fixing bolt is detachably connected in the bolt hole (12).

2. The modular, easily installable compressor crankshaft according to claim 1, characterized in that: The bottom of the cover (14) is also fixedly installed with an anti-detachment post (15), and the installation position of the anti-detachment post (15) corresponds to the opening position of the bolt hole (12).

3. The modular, easily installable compressor crankshaft according to claim 1, characterized in that: A shielding part (9) is also fixedly provided on the top of the inner wall of the slot (6), which is used to prevent the top end of the spindle (1) from passing through the slot (6).

4. The modular, easily installable compressor crankshaft according to claim 3, characterized in that: The connecting shaft (4) has three vertically penetrating connecting holes 3 (21), and the rotating plate (2) has two vertically penetrating connecting holes 2 (20) corresponding to the connecting holes 3 (21). The outer wall of the main shaft (1) is also fixedly provided with a protrusion (18), and the protrusion (18) has two vertically penetrating connecting holes 1 (19) corresponding to the connecting holes 2 (20). Connecting bolts can be detachably installed in the connecting hole three (21), connecting hole two (20) and connecting hole one (19).

5. A modular compressor crankshaft for easy installation according to claim 4, characterized in that: The shielding part (9) is provided with a through groove (22) corresponding to the connecting hole three (21), and the top of the main shaft (1) is provided with a connecting hole four (23) corresponding to the through groove (22). A secondary bolt is detachably installed in the connecting hole three (21), the through groove (22) and the connecting hole four (23).

6. A modular, easily installable compressor crankshaft according to claim 1, characterized in that: The top of the block groove (11) is open at the top of the main shaft (1).

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