CN216642381U

CN216642381U - Connect stable air compressor machine connecting rod

Info

Publication number: CN216642381U
Application number: CN202122657516.1U
Authority: CN
Inventors: 王耀辉; 毛尔斌; 黄富炎; 毛宋燕; 徐银军
Original assignee: Shaoxing Jiada Machinery Manufacturing Co ltd
Current assignee: Shaoxing Jiada Machinery Manufacturing Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-05-31
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses an air compressor connecting rod with stable connection, which comprises a connecting rod, a small port, a large port, a locking block and an oil guide groove, wherein the small port is connected with the large port; the outside of the large port is symmetrically provided with a first connecting body; second connecting bodies are symmetrically arranged on two sides of the locking block; a first inserting block is arranged on the first connecting body; two sides of the first inserting block are provided with first inserting grooves; a second slot is arranged in the second connecting body; second inserting blocks are arranged on two sides of the second inserting groove; a stud is inserted into the first connecting body; a rotation stopping piece is fixed at the end part of the stud; according to the utility model, the locking block and the large port are connected and fixed through the mutual matching of the first insertion block and the second slot, the second insertion block and the second slot and the fixation of the stud, the rotation of the stud is limited by the arranged rotation stopping piece, and compared with a conventional screw fixing mode, the connecting effect is enhanced; and multiple positions on the stud bear load, so that the stud is prevented from being broken.

Description

Connect stable air compressor machine connecting rod

Technical Field

The utility model belongs to the technical field of air compressor connecting rods, and particularly relates to an air compressor connecting rod with stable connection.

Background

On an air compressor, a connecting rod is generally used for connecting a crankshaft and a piston; the end of the connecting rod connected with the crankshaft is generally an open piece so as to enable the crankshaft to be sleeved on the connecting rod, and a matching block is fixed to the open end of the connecting rod by screws so as to install the crankshaft on the connecting rod; when the connecting rod is pulled by the crankshaft to move, the screw is positioned at the position where the opening end of the connecting rod is contacted with the matching block to bear load, and the screw is easy to break after long-time use, so that the connection between the connecting rod and the crankshaft is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stably connected air compressor connecting rod in order to overcome the defects of the prior art.

The technical scheme provided by the utility model is as follows: a stably connected air compressor connecting rod comprises a rod body, a small port arranged at one end of the rod body and used for connecting a piston, a large port arranged at the other end of the rod body and used for connecting a crankshaft, a locking block fixed outside the large port, and oil guide grooves arranged in the large port and the small port; the outside of the large port is symmetrically provided with a first connecting body; second connecting bodies are symmetrically arranged on two sides of the locking block; a first inserting block is arranged on the first connecting body; two sides of the first inserting block are provided with first inserting grooves; a second slot is arranged in the second connecting body; the first inserting block is embedded into the second inserting groove; second inserting blocks are arranged on two sides of the second inserting groove; the second inserting block is embedded into the first inserting groove; a stud is inserted into the first connecting body; the stud penetrates through the second inserting block, the first inserting block and the first slot; and a rotation stopping piece is fixed at the end part of the stud.

Furthermore, the surface of the first connecting body is provided with a rotation stopping groove; the rotation stopping piece comprises a nut which is arranged at one end of the stud through a threaded connecting sleeve and is embedded into the rotation stopping groove; the nut comprises a first annular groove arranged on the nut, a first notch arranged on the first annular groove and an elastic ring inserted in the first annular groove; a second notch is formed in the stud; a second annular groove is formed in one end of the second notch; the elastic ring is embedded in the second annular groove; two ends of the elastic ring are respectively provided with a pressing block; a first locking block is arranged on the outer side of the elastic ring; the first locking block is inserted into the first notch; a second locking block is arranged on the inner side of the elastic ring; the second locking piece is inserted into the second notch.

Furthermore, the oil guide grooves arranged in the large port and the small port are communicated through a column hole; the middle part of the column hole is communicated with the mounting hole through an injection hole; a communicating vessel is arranged in the mounting hole; an oil injector for introducing lubricating oil into the injection hole is arranged outside the mounting hole; the communicating device comprises a communicating block rotatably connected in the mounting hole, a rotating block sleeved outside the communicating block and a first spring fixed between the rotating block and the communicating block; a polygonal surface is arranged on the outer side of the communicating block; the inner side of the rotating block is attached to the polygonal surface; a passage is arranged in the communicating block; the grease squirt may be inserted into the passageway; one end of the communicating block is provided with a hollow block; one end of the rotating block is provided with a push rod; one end of the push rod is inserted into the hollow blocking block and is provided with a sealing block.

Furthermore, a clamp spring groove is formed in the end part of the mounting hole; a clamp spring is embedded in the clamp spring groove; a rubber layer is arranged on the outer side of the communicating block; the rubber layer is in contact with the inner wall of the mounting hole; a first limiting groove is formed in the inner side of the clamp spring groove; one end of the first limiting groove is communicated with the first rotating groove; the rotating block is provided with a first limiting block which can move along the first limiting groove.

Furthermore, the oil injector comprises a through pipe with one end inserted into the passage, a cavity arranged in the through pipe, a piston rod with one end inserted into the cavity, and an oil storage cavity arranged on the through pipe; one end of the through pipe is provided with a polygonal block which is in contact with the rotating block; the polygonal block is sleeved outside the polygonal surface; the through pipe is communicated with the upper part of the oil storage cavity through an air pipe; the top of the oil storage cavity is provided with a first one-way valve; the bottom of the oil storage cavity is provided with a second one-way valve; and the pressure plate is connected in the oil storage cavity in a sliding manner.

A second limiting groove is formed outside the clamp spring groove; a second rotary groove is formed in one side of the second limiting groove; a second limiting block is arranged on the surface of one end, inserted into the mounting hole, of the through pipe; the second limiting block is inserted into the second limiting groove; one end of the through pipe inserted into the mounting hole is provided with a sliding groove; a sliding block is connected in the sliding groove in a sliding manner; one end of the sliding block is inserted into the second limiting groove; an elastic sheet is fixed between the sliding block and the sliding groove; the sliding block is provided with a through hole; the through-hole may communicate with the passage.

In summary, the locking block and the large port are connected and fixed through the first insertion block and the second slot, the second insertion block and the second slot are matched with each other, and the stud is fixed, the rotation of the stud is limited by the arranged rotation stopping piece, and compared with a conventional screw fixing mode, the connecting strength is enhanced; and multiple positions on the stud bear load, so that the stud is prevented from being broken.

Drawings

Figure 1 is an isometric cross-sectional view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a partially enlarged view of a portion B in fig. 2.

Fig. 4 is a partially enlarged view of a portion a in fig. 1.

Fig. 5 is a schematic structural view of the communicating vessel in fig. 4.

FIG. 6 is an isometric cross-sectional view of the rod body of FIG. 1

Fig. 7 is an isometric cross-sectional view of the fuel injector of fig. 1.

Fig. 8 is an isometric cross-sectional view of the fuel injector of fig. 1 from another perspective.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1-8, a stably connected air compressor connecting rod comprises a rod body 1, a small port 11 arranged at one end of the rod body 1 and used for connecting a piston, a large port 12 arranged at the other end of the rod body 1 and used for connecting a crankshaft, a locking block 2 fixed outside the large port 12, and oil guide grooves 13 arranged in the large port 12 and the small port 11; the first connecting bodies 3 are symmetrically arranged outside the large port 12; the two sides of the locking block 2 are symmetrically provided with a second connecting body 21; the first connecting body 3 is provided with a first insert block 31; two sides of the first inserting block 31 are provided with first inserting grooves 32; a second slot 22 is arranged in the second connecting body 21; the first insert block 31 is embedded in the second slot 22; two sides of the second slot 22 are provided with second inserting blocks 23; the second insert 23 is inserted into the first slot 32; a stud 33 is inserted in the first connecting body 3; the stud 33 penetrates through the second insertion block 23, the first insertion block 31 and the first slot 32; the rotation stopper 4 is fixed to the end of the stud 33.

When the connecting device is used, a crankshaft is sleeved into the large port 12, the locking block 2 is sleeved at the end part of the large port 12, the first inserting block 31 is embedded into the second inserting groove 22, the second inserting block 23 is embedded into the second inserting groove 22, the stud 33 penetrates through the first inserting block 31 and the second inserting block 23, after the stud 33 is screwed, the first inserting block 31, the second inserting block 23 and the stud 33 form a mortise-tenon joint structure, and a plurality of positions on the stud 33 bear load when the crankshaft rotates, so that fracture caused by stress concentration on a screw is avoided; the oil guide groove 13 is provided to store lubricating oil to reduce wear on the connecting rod when the crankshaft rotates.

Further, the surface of the first connecting body 3 is provided with a rotation stopping groove 34; the rotation stopping piece 4 comprises a nut 41 which is arranged at one end of the stud 33 through a threaded connecting sleeve and is embedded into the rotation stopping groove 34; a first ring groove 42 arranged on the nut 41, a first notch 43 arranged on the first ring groove 42, and an elastic ring 44 inserted in the first ring groove 42; the stud 33 is provided with a second notch 35; one end of the second notch 35 is provided with a second annular groove 36; the elastic ring 44 is embedded in the second annular groove 36; two ends of the elastic ring 44 are respectively provided with a pressing block 441; the outside of the elastic ring 44 is provided with a first locking block 442; the first locking piece 442 is inserted into the first notch 43; a second locking block 443 is arranged on the inner side of the elastic ring 44; the second locking piece 443 is inserted into the second slot 35.

When in use, after the locking block 2 is attached to the end part of the large port 12, the nut 41 is sleeved into the rotation stopping groove 34 to limit the rotation of the nut 41; then, inserting the stud 33 into the first connecting body 3 and rotating the stud 33 to enable the stud to be matched with the nut 41 to complete the connection of the locking block 2 and the rod body 1; then, the elastic ring 44 is sleeved on the stud 33 and is embedded between the first annular groove 42 and the second annular groove 36, under the action of the elastic force of the elastic ring 44, the elastic ring is attached to the wall surface of the second annular groove 36, a gap is reserved between the elastic ring and the wall surface of the second annular groove 36, the first locking piece 442 is inserted into the first notch 43, the second locking piece 443 is embedded into the second notch 35, the elastic ring 44 is used for limiting the relative rotation of the stud 33 and the nut 41, and the rotation stopping groove 34 is used for limiting the rotation of the nut 41, so that the stud 33 is fixed at the end of the rod, and the stable connection of the nut 41 is ensured; when the crankshaft is disassembled, the two pressing blocks 441 are pushed to the two sides, the elastic ring 44 is separated from the second annular groove 36, and the elastic ring 44 can be taken down from the stud 33, so that the stud 33 is loosened, and the crankshaft and the connecting rod are separated.

Furthermore, oil guide grooves 13 arranged in the large port 12 and the small port 11 are communicated through a column hole 14; the middle part of the column hole 14 is communicated with the mounting hole 16 through the injection hole 15; the communicating vessel 5 is arranged in the mounting hole 16; an oil ejector 6 for introducing lubricating oil into the injection hole 15 is arranged outside the mounting hole 16; the communicating vessel 5 comprises a communicating block 51 which is rotatably connected in the mounting hole 16, a rotating block 52 which is sleeved outside the communicating block 51, and a first spring 53 which is fixed between the rotating block 52 and the communicating block 51; a polygonal surface 511 is arranged on the outer side of the communicating block 51; the inner side of the rotating block 52 is attached to the polygonal surface 511; a passage 512 is arranged in the communicating block 51; the lubricator 6 may be inserted into the passageway 512; one end of the communicating block 51 is provided with a hollow block 513; one end of the rotating block 52 is provided with a push rod 521; one end of the push rod 521 is inserted into the hollow block 513 and is provided with a sealing block 522.

When the connecting rod is in use, the oil injector 6 pushes the rotating block 52 to move, so that the sealing block 522 moves towards the inside of the hollow blocking block 513, the hollow blocking block 513 is made of deformable rubber materials, when the sealing block 522 moves, the inside of the hollow blocking block 513 is communicated with the outside, at the moment, the oil injector 6 drives the communicating block 51 to rotate, so that the hollow blocking block 513 is separated from the injection hole 15, meanwhile, the passage 512 rotates to be communicated with the injection hole 15, so that lubricating oil can be injected into the injection hole 15, and the lubricating oil enters the oil guide groove 13 from the column hole 14, so that the connecting rod is lubricated when in use, the abrasion of the connecting rod is reduced, and the service life of the connecting rod is ensured; after the oil injection is finished, the oil injector 6 is utilized to drive the communicating vessel 5 to rotate reversely, and the hollow block 513 is embedded into the injection hole 15 again; after the oil injector 6 is taken out from the mounting hole 16, the first spring 53 drives the rotating block 52 to reset, and the sealing block 522 is synchronously reset, so that the inside of the hollow block 513 is in a sealing state, the injection hole 15 is sealed by the hollow block 513, and the lubricating oil leakage is avoided.

Further, the end of the mounting hole 16 is provided with a groove 161 of the clamp spring 7; a clamp spring 7 is embedded in the groove 161 of the clamp spring 7; a rubber layer 514 is arranged outside the communicating block 51; the rubber layer 514 is contacted with the inner wall of the mounting hole 16; a first limiting groove 162 is formed in the inner side of the groove 161 of the clamp spring 7; one end of the first limiting groove 162 is communicated with the first rotating groove 163; the rotating block 52 is provided with a first limiting block 523 which can move along the first limiting groove 162.

The communicating vessel 5 is limited by matching the clamp spring 7 with the clamp spring 7 groove 161, so that the communicating vessel 5 is stabilized in the mounting hole 16, when the hollow block 513 is abraded, the communicating vessel 5 can be taken out only by taking out the clamp spring 7, the hollow block 513 is convenient to replace, and the clamp spring 7 is purchased from the market; the rubber layer 514 has a saw-toothed cross section, so that the axial movement of the communicating block 51 along the mounting hole 16 is limited, and the sealing effect of the hollow blocking block 513 is ensured; the rotation of the rotating block 52 is limited by the matching of the first limiting groove 162 and the first limiting block 523, the situation that the communicating vessel 5 is driven by the oil injector 6 to rotate when the first limiting block 523 is in the first limiting groove 162 is avoided, the hollow blocking block 513 rotates under the condition of being sealed inside is avoided, the abrasion of the hollow blocking block 513 is reduced, and the sealing effect of the hollow blocking block 513 on the injection hole 15 is ensured.

Further, the oil injector 6 comprises a through pipe 61 with one end inserted into the passage 512, a cavity 62 arranged in the through pipe 61, a piston rod 63 with one end inserted into the cavity 62, and an oil storage cavity 64 arranged on the through pipe 61; one end of the through pipe 61 is provided with a polygonal block 611 which is contacted with the rotating block 52; the polygonal block 611 is sleeved outside the polygonal surface 511; the through pipe 61 is communicated with the upper part of the oil storage cavity 64 through an air pipe 612; the top of the oil storage chamber 64 is provided with a first check valve 641; the bottom of the oil storage cavity 64 is provided with a second one-way valve 642; a pressure plate 643 is slidably coupled within reservoir chamber 64.

During oil injection, the through pipe 61 is inserted into the mounting hole 16, the rotating block 52 is pushed to move to the end part of the first rotating groove 163, meanwhile, the end part of the through pipe 61 is inserted into the through hole 67, and the polygonal block 611 is embedded with the polygonal surface 511, so that the communicating vessel 5 synchronously rotates when the oil injector 6 rotates; the piston rod 63 is pushed to slide in the cavity 62, the first check valve 641 is opened and the second check valve 642 is closed, so that the lubricating oil in the cavity 62 is injected into the inlet passage 512, and the lubricating oil is injected into the oil guide groove 13 and the column hole 14; after the piston rod 63 moves to the end of the stroke, the piston rod 63 is pulled to reset, the first check valve 641 is closed, the second check valve 642 is opened, the pressure change in the oil storage chamber 64 pushes the pressure plate 643 to move, and the lubricating oil in the oil storage chamber 64 is injected into the cavity 62 to prepare for the next oil injection.

A second limiting groove 164 is formed outside the groove 161 of the clamp spring 7; a second rotary groove 165 is formed in one side of the second limiting groove 164; a second limiting block 613 is arranged on the surface of one end of the through pipe 61 inserted into the mounting hole 16; the second limiting block 613 is inserted into the second limiting groove 164; one end of the through pipe 61 inserted into the mounting hole 16 is provided with a sliding groove 614; a slide block 65 is slidably connected in the slide groove 614; one end of the sliding block 65 is inserted into the second limiting groove 164; an elastic sheet 66 is fixed between the sliding block 65 and the sliding groove 614; the slide block 65 is provided with a through hole 67; the through hole 67 may communicate with the passage 512.

During oil injection, the slide block 65 and the second limiting block 613 are embedded into the second limiting groove 164 along with the insertion of the through pipe 61 into the mounting hole 16, the slide block 65 and the second limiting block 613 are rotated into the second rotating groove 165 when the through pipe 61 is rotated, and the communicating vessel 5 synchronously rotates; when the communicating vessel 5 rotates to the passage 512 to communicate with the injection hole 15, the second limiting block 613 is positioned in the second rotating groove 165 to limit the movement of the through pipe 61, so that the through pipe 61 stays in the mounting hole 16 when the piston rod 63 is pulled to reset after the subsequent oil injection is completed, and the use is convenient; meanwhile, the sliding block 65 contacts the end part of the second rotary groove 165 and slides in the sliding groove 614, the elastic sheet 66 contracts to enable the through hole 67 to be opposite to the passage 512, so that the lubricating oil is injected into the passage 512 by the oil injector 6, the through hole 67 is staggered with the passage 512 in other states, the sliding block 65 blocks the communication between the inside of the through pipe 61 and the passage 512, and the lubricating oil in the cavity 62 is prevented from leaking.

The foregoing has described preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary, and various changes made within the scope of the independent claims of the present invention are within the scope of the present invention.

Claims

1. A stably connected air compressor connecting rod comprises a rod body (1), a small port (11) arranged at one end of the rod body (1) and used for connecting a piston, a large port (12) arranged at the other end of the rod body (1) and used for connecting a crankshaft, a locking block (2) fixed outside the large port (12), and oil guide grooves (13) arranged in the large port (12) and the small port (11); it is characterized in that the large port (12) is externally and symmetrically provided with a first connecting body (3); second connecting bodies (21) are symmetrically arranged on two sides of the locking block (2); a first insert block (31) is arranged on the first connecting body (3); two sides of the first inserting block (31) are provided with first inserting grooves (32); a second slot (22) is arranged in the second connecting body (21); the first insert block (31) is embedded into the second slot (22); second inserting blocks (23) are arranged on two sides of the second inserting groove (22); the second insert block (23) is embedded in the first slot (32); a stud (33) is inserted into the first connecting body (3); the stud (33) penetrates through the second inserting block (23), the first inserting block (31) and the first inserting groove (32); and a rotation stopping piece (4) is fixed at the end part of the stud (33).

2. The stably-connected air compressor connecting rod as claimed in claim 1, wherein: the surface of the first connecting body (3) is provided with a rotation stopping groove (34); the rotation stopping piece (4) comprises a nut (41) which is sleeved at one end of the stud (33) and is embedded into the rotation stopping groove (34) through threaded connection; a first annular groove (42) arranged on the nut (41), a first notch (43) arranged on the first annular groove (42), and an elastic ring (44) inserted in the first annular groove (42); a second notch (35) is formed in the stud (33); one end of the second notch (35) is provided with a second annular groove (36); the elastic ring (44) is embedded in the second annular groove (36); two ends of the elastic ring (44) are respectively provided with a pressing block (441); a first locking block (442) is arranged on the outer side of the elastic ring (44); the first locking piece (442) is inserted into the first notch (43); a second locking block (443) is arranged on the inner side of the elastic ring (44); the second locking block (443) is inserted into the second slot (35).

3. The stably-connected air compressor connecting rod as claimed in claim 1, wherein: the oil guide grooves (13) arranged in the large port (12) and the small port (11) are communicated through a column hole (14); the middle part of the column hole (14) is communicated with the mounting hole (16) through an injection hole (15); a communicating vessel (5) is arranged in the mounting hole (16); an oil injector (6) for introducing lubricating oil into the injection hole (15) is arranged outside the mounting hole (16); the communicating device (5) comprises a communicating block (51) rotatably connected in the mounting hole (16), a rotating block (52) sleeved outside the communicating block (51), and a first spring (53) fixed between the rotating block (52) and the communicating block (51); a polygonal surface (511) is arranged on the outer side of the communication block (51); the inner side of the rotating block (52) is attached to the polygonal surface (511); a passage (512) is arranged in the communication block (51); the oil injector (6) can be inserted into the passage (512); one end of the communicating block (51) is provided with a hollow block (513); one end of the rotating block (52) is provided with a push rod (521); one end of the push rod (521) is inserted into the hollow block (513) and is provided with a sealing block (522).

4. The stably-connected air compressor connecting rod as claimed in claim 3, wherein: a clamp spring (7) groove (161) is formed in the end part of the mounting hole (16); a clamp spring (7) is embedded in the clamp spring (7) groove (161); a rubber layer (514) is arranged on the outer side of the communicating block (51); the rubber layer (514) is in contact with the inner wall of the mounting hole (16); a first limiting groove (162) is formed in the inner side of the groove (161) of the clamp spring (7); one end of the first limiting groove (162) is communicated with the first rotating groove (163); the rotating block (52) is provided with a first limit block (523) which can move along the first limit groove (162).

5. The stably-connected air compressor connecting rod as claimed in claim 4, wherein: the oil injector (6) comprises a through pipe (61) with one end inserted into the passage (512), a cavity (62) arranged in the through pipe (61), a piston rod (63) with one end inserted into the cavity (62), and an oil storage cavity (64) arranged on the through pipe (61); one end of the through pipe (61) is provided with a polygonal block (611) which is in contact with the rotating block (52); the polygonal block (611) is sleeved outside the polygonal surface (511); the through pipe (61) is communicated with the upper part of the oil storage cavity (64) through an air pipe (612); the top of the oil storage cavity (64) is provided with a first one-way valve (641); a second one-way valve (642) is arranged at the bottom of the oil storage cavity (64); and a pressure plate (643) is connected in the oil storage cavity (64) in a sliding manner.

6. The stably-connected air compressor connecting rod as claimed in claim 5, wherein: a second limiting groove (164) is formed outside the clamp spring (7) groove (161); a second rotary groove (165) is formed in one side of the second limiting groove (164); a second limiting block (613) is arranged on the surface of one end of the through pipe (61) inserted into the mounting hole (16); the second limiting block (613) is inserted into the second limiting groove (164); one end of the through pipe (61) inserted into the mounting hole (16) is provided with a sliding groove (614); a sliding block (65) is connected in the sliding groove (614) in a sliding way; one end of the sliding block (65) is inserted into the second limiting groove (164); an elastic sheet (66) is fixed between the sliding block (65) and the sliding groove (614); a through hole (67) is formed in the sliding block (65); the through hole (67) may communicate with the passage (512).