Crankshaft for high-lubrication refrigeration compressor

Abstract

The utility model discloses a crankshaft for a high lubrication refrigeration compressor, which relates to the technical field of compressor crankshafts, and comprises a crank, two crank pins and two bent necks, each crank pin is internally provided with an insertion hole, the two bent necks are respectively and movably arranged in the corresponding insertion holes in a penetrating manner, each bent neck is internally provided with a cavity, and each cavity is internally provided with a through hole. Two first through holes are symmetrically formed in the side wall of each cavity, two inserting grooves are symmetrically formed in the inner wall of each inserting hole, and an L-shaped inserting rod movably connected with the corresponding inserting groove in an inserted mode is movably arranged in each first through hole in a penetrating mode. The conical groove is formed in one end of the push block, the ends of the two L-shaped insertion rods can be extruded in the process that the push block gets close to the two L-shaped insertion rods, the two L-shaped insertion rods are made to get close to each other and move into the corresponding cavities, and therefore the bent neck can be conveniently disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor crankshafts, in particular to a crankshaft for a high-lubrication refrigeration compressor. Background Art

[0002] The crankshaft of the compressor has an oil pumping function. On the one hand, it can lubricate the crankshaft-connecting rod-piston movement mechanism to prevent the movement mechanism from getting stuck; on the other hand, it can cool the piston-cylinder unit.

[0003] After searching, the publication number is: CN213235777U, a high-lubrication crankshaft for a refrigeration compressor, which belongs to the field of compressor crankshafts, including a crank neck, the outer wall of the crank neck is provided with a slide groove, the outer wall of the crankshaft is provided with a first through hole, the inner wall gap of the first through hole is connected with a ball bearing, the left side gap of the crank neck is connected with a crank pin, the outer wall gap of the crank pin is connected with a crank, one end of the crank is equipped with a disc, and the disc has two groups symmetrically installed on the other end of the crank pin, the outer wall gap of the crank is connected with a fixing plate, the outer wall of the fixing plate is provided with a circular hole and the crank passes through the circular hole.

[0004] The above technical solution has the following shortcomings:

[0005] The crank neck and the crank handle in the above technical solution are connected by a pin, and the connection and disassembly process is relatively complicated. Utility Model Content

[0006] In view of the above problems existing in the crankshaft for the existing high-lubrication refrigeration compressor, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a high-lubrication refrigeration compressor crankshaft, which solves the problem that the connection between the crank neck and the crank tip is connected by a pin, and the connection and disassembly process is relatively cumbersome.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A crankshaft for a high-lubrication refrigeration compressor comprises a crank, two crank pins and two crank necks, each of the crank pins is provided with a socket, the two crank necks are movably arranged in the corresponding sockets, a cavity is provided in the interior of each crank neck, the side wall of each cavity is symmetrically provided with two first through holes, the inner wall of each socket is symmetrically provided with two slots, an L-shaped plug rod movably inserted into the corresponding slot is movably inserted in the interior of each first through hole, the rod wall of each L-shaped plug rod is provided with a connecting mechanism and is respectively connected to the inner wall of the cavity through the corresponding connecting mechanism, a push block is movably inserted in the interior of the cavity, one end of the push block is provided with a conical groove, one end of each L-shaped plug rod located in the cavity is in contact with the inner wall of the conical groove, one end of the cavity is provided with a second through hole, a pull rod is movably inserted in the interior of the second through hole, and the end of the pull rod located in the cavity is fixedly connected to the inner wall of the conical groove.

[0010] Preferably, the connecting mechanism includes an elastic telescopic rod, two connecting plates and two connecting blocks, the two connecting plates are symmetrically fixed at both ends of the elastic telescopic rod and are respectively fixedly connected to the corresponding connecting blocks, the two connecting blocks are both fixedly sleeved with axle pins inside and are respectively rotatably connected with a first U-shaped block and a second U-shaped block through corresponding axle pins, the first U-shaped block is fixedly connected to the inner wall of the cavity, and the second U-shaped block is fixedly connected to the corresponding L-shaped plug rod.

[0011] Preferably, an annular plate is fixedly provided inside the cavity, a movable rod fixedly connected to the push block is movably penetrated inside the annular plate, a baffle is fixedly connected to the other end of the movable rod, and a spring movably sleeved with the movable rod is fixedly connected between the baffle and the annular plate.

[0012] Preferably, one end of the pull rod located outside the cavity is fixedly connected to a pull ring.

[0013] Preferably, one end of each L-shaped insertion rod located inside the cavity is configured as an arc-shaped end surface.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] The utility model provides a conical groove at one end of the push block, which can squeeze the ends of the two L-shaped insertion rods when the push block approaches the two L-shaped insertion rods, so that the two L-shaped insertion rods are close to each other and move into the corresponding cavities, thereby facilitating the disassembly and assembly of the curved neck. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 For the utility model Figure 1 A magnified schematic diagram of part A;

[0019] Figure 3 For the utility model Figure 2 An enlarged schematic diagram of part B.

[0020] Description of reference numerals:

[0021] 1. Crank; 2. Crank pin; 3. Crank neck; 4. L-shaped plug rod; 5. Push block; 6. Pull rod; 7. Elastic telescopic rod; 8. Connecting plate; 9. Connecting block; 10. Axle pin; 11. First U-shaped block; 12. Second U-shaped block; 13. Annular plate; 14. Movable rod; 15. Baffle; 16. Spring; 17. Pull ring. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The utility model embodiment discloses a crankshaft for a high-lubrication refrigeration compressor.

[0024] The utility model provides Figure 1-3A crankshaft for a high-lubrication refrigeration compressor shown in the figure comprises a crank 1, two crank pins 2 and two crank necks 3, each crank pin 2 is provided with a socket inside, the two crank necks 3 are movably arranged in the corresponding sockets, each crank neck 3 is provided with a cavity inside, the side wall of each cavity is symmetrically provided with two first through holes, the inner wall of each socket is symmetrically provided with two slots, each first through hole is movably provided with an L-shaped plug rod 4 movably plugged into the corresponding slot, the rod wall of each L-shaped plug rod 4 is provided with a connecting mechanism and is connected to the inner wall of the cavity through the corresponding connecting mechanism, and the cavity A push block 5 is movably penetrated inside, and a conical groove is provided at one end of the push block 5. One end of each L-shaped rod 4 located inside the cavity is in contact with the inner wall of the conical groove. A second through hole is provided at one end of the cavity, and a pull rod 6 is movably penetrated inside the second through hole. One end of the pull rod 6 located inside the cavity is fixedly connected to the inner wall of the conical groove. By utilizing the conical groove provided at one end of the push block 5, the ends of the two L-shaped rods 4 can be squeezed when the push block 5 approaches the two L-shaped rods 4, so that the two L-shaped rods 4 are close to each other and moved to the inside of the corresponding cavity, thereby facilitating the disassembly and assembly of the curved neck 3.

[0025] like Figure 1-3 As shown, the connecting mechanism includes an elastic telescopic rod 7, two connecting plates 8 and two connecting blocks 9. The two connecting plates 8 are symmetrically fixed at both ends of the elastic telescopic rod 7 and are respectively fixedly connected to the corresponding connecting blocks 9. The interiors of the two connecting blocks 9 are fixedly sleeved with axle pins 10 and are respectively rotatably connected with a first U-shaped block 11 and a second U-shaped block 12 through the corresponding axle pins 10. The first U-shaped block 11 is fixedly connected to the inner wall of the cavity, and the second U-shaped block 12 is fixedly connected to the corresponding L-shaped plug rod 4. By utilizing the two elastic telescopic rods 7, the corresponding L-shaped plug rod 4 can be squeezed by the elastic force of the elastic telescopic rod 7 in a natural state, so that the L-shaped plug rod 4 and the corresponding slot remain stably plugged.

[0026] like Figure 1-3 As shown, an annular plate 13 is fixedly provided inside the cavity, and a movable rod 14 fixedly connected to the push block 5 is movably penetrated inside the annular plate 13, and a baffle 15 is fixedly connected to the other end of the movable rod 14, and a spring 16 movably sleeved with the movable rod 14 is fixedly connected between the baffle 15 and the annular plate 13. By utilizing the set spring 16, the annular plate 13 can be squeezed by the elastic force of the spring 16, so that the annular plate 13 drives the push block 5 as far away from the two L-shaped plug rods 4 as possible through the movable rod 14, so that the two L-shaped plug rods 4 can be kept in an inserted state with the corresponding slots as much as possible.

[0027] like Figure 1-3 As shown, one end of the pull rod 6 located outside the cavity is fixedly connected with a pull ring 17 . The pull ring 17 can be used to facilitate pulling the pull rod 6 to move, thereby driving the push block 5 to squeeze the two L-shaped insertion rods 4 .

[0028] like Figure 1-3 As shown, one end of each L-shaped rod 4 located inside the cavity is configured as an arc-shaped end surface. The configured arc-shaped end surface can reduce the friction between the end of the L-shaped rod 4 and the inner wall of the conical groove.

[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A crankshaft for a high-lubrication refrigeration compressor, comprising a crank (1), two crank pins (2) and two crank necks (3), characterized in that: Each crank pin (2) is provided with a socket inside, and the two curved necks (3) are movably inserted into the corresponding sockets respectively. Each curved neck (3) is provided with a cavity inside, and the side wall of each cavity is symmetrically provided with two first through holes, and the inner wall of each socket is symmetrically provided with two slots, and each first through hole is movably provided with an L-shaped plug rod (4) movably inserted into the corresponding slot, and the rod wall of each L-shaped plug rod (4) is provided with a connecting mechanism and is connected to the inner wall of the cavity through the corresponding connecting mechanism, and a push block (5) is movably inserted into the cavity, and a conical groove is provided at one end of the push block (5), and one end of each L-shaped plug rod (4) located inside the cavity is in contact with and connected to the inner wall of the conical groove, and a second through hole is provided at one end of the cavity, and a pull rod (6) is movably inserted into the second through hole, and one end of the pull rod (6) located inside the cavity is fixedly connected to the inner wall of the conical groove.

2. A crankshaft for a high-lubricity refrigeration compressor according to claim 1, characterized in that: The connection mechanism comprises an elastic telescopic rod (7), two connection plates (8) and two connection blocks (9); the two connection plates (8) are symmetrically fixedly arranged at the two ends of the elastic telescopic rod (7) and are respectively fixedly connected to the corresponding connection blocks (9); the two connection blocks (9) are both fixedly sleeved with axle pins (10) inside and are respectively rotatably connected to a first U-shaped block (11) and a second U-shaped block (12) through the corresponding axle pins (10); the first U-shaped block (11) is fixedly connected to the inner wall of the cavity, and the second U-shaped block (12) is fixedly connected to the corresponding L-shaped plug rod (4).

3. A crankshaft for a high-lubricity refrigeration compressor according to claim 1, characterized in that: An annular plate (13) is fixedly arranged inside the cavity, a movable rod (14) is movably penetrated inside the annular plate (13) and is fixedly connected to the push block (5), a baffle (15) is fixedly connected to the other end of the movable rod (14), and a spring (16) movably sleeved with the movable rod (14) is fixedly connected between the baffle (15) and the annular plate (13).

4. A crankshaft for a high-lubricity refrigeration compressor according to claim 1, characterized in that: One end of the pull rod (6) located outside the cavity is fixedly connected to a pull ring (17).

5. The high-lubricity refrigeration compressor crankshaft according to claim 1, characterized in that: One end of each L-shaped insertion rod (4) located inside the cavity is arranged as an arc-shaped end surface.

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