Compressor crankshaft connecting rod mechanism

Abstract

The utility model discloses a compressor crankshaft connecting rod mechanism, and relates to the technical field of crankshaft connecting rod mechanisms. The crankshaft connecting rod mechanism comprises crankshaft bodies and balance blocks, connecting rod journals are arranged between the crankshaft bodies and the balance blocks, connecting rod bodies are arranged on the outer walls of the connecting rod journals, main journals are arranged between every two adjacent crankshaft bodies and balance blocks, and the crankshaft connecting rod mechanism can be applied to the interiors of other equipment such as compressors. According to the crankshaft connecting rod mechanism of the compressor, the balance block is provided with the space for containing the balancing weight, so that balance weight adjustment of corresponding weights can be conducted on all parts of the balance block according to the balance requirement of a crankshaft, and by combining components such as the threaded rod, the balance weight can be adjusted on the basis of the left-right direction; the overall balance weight requirement of the balance block is adjusted in the vertical direction, the situation that the crankshaft rotates eccentrically is effectively avoided, and the purpose of stable operation of a crankshaft connecting rod mechanism is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft connecting rod mechanisms, and particularly relates to a compressor crankshaft connecting rod mechanism. Background Technique

[0002] A compressor is mainly composed of two parts, namely an electric motor and a piston. The crankshaft connecting rod mechanism consists of components such as a crankshaft, a balance weight, a journal, and a connecting rod. The electric motor is connected to the crankshaft. The crankshaft is connected to the connecting rod through the connecting rod journal at its position. One end of the connecting rod is connected to the piston, so that when the electric motor drives the crankshaft to rotate, the crankshaft and the connecting rod connected thereto drive the piston to move.

[0003] The crankshaft balances the weights of various parts through the balance weight provided at its position. However, since the crankshaft is connected to the piston through the connecting rod at its position, the gravity at both ends of the crankshaft is unbalanced. Over a long time, when the electric motor drives the crankshaft to rotate, the crankshaft will exhibit eccentric rotation. Moreover, the traditional balance weight is an integrally formed structure and cannot correspondingly adjust the balance degree of the balance weight according to the weights of different pistons connected at the connecting rod, resulting in poor applicability of the balance weight, and further affecting the stable operation of the crankshaft connecting rod mechanism in the compressor. In view of the deficiencies of the prior art, we propose a compressor crankshaft connecting rod mechanism to solve the above problems. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a compressor crankshaft connecting rod mechanism, which solves the problems that when the gravity at both ends of the crankshaft is unbalanced, the crankshaft will exhibit eccentric rotation, and the balance weight is an integrally formed structure and cannot correspondingly adjust the balance degree of the balance weight according to the weights of different pistons connected at the connecting rod, affecting the stable operation of the crankshaft connecting rod mechanism in the compressor.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A compressor crankshaft connecting rod mechanism includes a crankshaft body and a balance weight. A connecting rod journal is provided between the crankshaft body and the balance weight. A connecting rod body is provided on the outer wall of the connecting rod journal. A main journal is provided between adjacent two groups of the crankshaft body and the balance weight. A weight mechanism is provided inside the balance weight. The weight mechanism includes:

[0006] A first groove and a second groove, both of which are opened inside the balance weight;

[0007] Weight blocks, multiple groups of which are respectively placed inside the first groove and the second groove;

[0008] A threaded rod, which is rotatably provided inside the first groove and the second groove, and the weight block is connected to the threaded rod. The up and down positions of the weight block inside the first groove and the second groove are adjusted through the threaded rod.

[0009] Preferably, mounting plates for positioning and installing the counterweight blocks are provided inside both the first groove and the second groove. One end of each mounting plate is threadedly sleeved on the outer wall of the threaded rod, and limiting rods for limiting the up-and-down movement of the mounting plates are fixedly connected inside both the first groove and the second groove.

[0010] Preferably, a locking assembly is provided at one end of the threaded rod, and the locking assembly is used to lock the position of the counterweight block after it moves up and down.

[0011] Preferably, the locking assembly includes a threaded sleeve and a threaded ring. One end of each of the two threaded sleeves is fixedly connected to the inner walls of the first groove and the second groove respectively. The threaded ring is threadedly sleeved on the outer wall of the threaded rod, and one end of the threaded ring is threadedly inserted into the inside of the threaded sleeve.

[0012] Preferably, a handle is fixedly connected to the outer wall of the threaded rod near the threaded sleeve.

[0013] Preferably, a mounting screw is fixedly connected to one side of the mounting plate. The counterweight block is positioned and sleeved on the outer wall of the mounting screw, and a bolt is threadedly sleeved on the outer wall of one end of the mounting screw.

[0014] Preferably, baffles are provided on one side of both the first groove and the second groove.

[0015] The utility model discloses a compressor crankshaft connecting rod mechanism, and its beneficial effects are as follows: By providing a space for placing the counterweight block in the balance weight, the present compressor crankshaft connecting rod mechanism can adjust the counterweight of each part of the balance weight according to the balance requirements of the crankshaft. Combined with components such as the threaded rod, on the basis of the left-right direction, the overall balance counterweight requirements of the balance weight are adjusted in the up-down direction, effectively avoiding the situation that the crankshaft rotates eccentrically, and meeting the purpose of the stable operation of the crankshaft connecting rod mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

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

[0018] Figure 2 It is an exploded view of the connecting rod body and the connecting rod journal structure of the present utility model;

[0019] Figure 3Schematic diagram of the internal structure of the balance weight of the present utility model;

[0020] Figure 4 Exploded view of the balance weight and the counterweight structure of the present utility model;

[0021] Figure 5 Schematic diagram of the mounting plate and the threaded rod structure of the present utility model;

[0022] Figure 6 Schematic diagram of the connection structure of the threaded rod, the threaded sleeve and the threaded ring of the present utility model.

[0023] In the figure: 1, crankshaft body; 2, balance weight; 3, connecting rod journal; 4, connecting rod body; 5, main journal; 6, counterweight mechanism; 61, first groove; 62, second groove; 63, baffle; 64, counterweight; 65, mounting plate; 66, threaded rod; 67, limiting rod; 68, handle; 7, locking assembly; 71, threaded sleeve; 72, threaded ring; 8, mounting screw; 81, bolt. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] By providing a compressor crankshaft connecting rod mechanism in the embodiments of the present application, the problem that when the gravity at both ends of the crankshaft is unbalanced, the crankshaft will rotate eccentrically, and the balance weight is an integrally formed structure, and the balance degree of the balance weight cannot be correspondingly adjusted according to the weights of different pistons connected at the connecting rod, affecting the stable operation of the crankshaft connecting rod mechanism in the compressor is solved, and the counterweight adjustment of different weights at each part of the balance weight is realized.

[0026] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0027] The embodiments of the present utility model disclose a compressor crankshaft connecting rod mechanism.

[0028] According to the appendix Figure 1-6As shown in the figure, it includes a crankshaft body 1 and a balance weight 2. A connecting rod journal 3 is provided between the crankshaft body 1 and the balance weight 2. A connecting rod body 4 is provided on the outer wall of the connecting rod journal 3. A main journal 5 is provided between adjacent two sets of the crankshaft body 1 and the balance weight 2. Components such as the crankshaft body 1, the balance weight 2, the connecting rod journal 3, the connecting rod body 4, and the main journal 5 form a crankshaft connecting rod mechanism. This crankshaft connecting rod mechanism is applied to the interior of a compressor. One end of the connecting rod body 4 is provided with a piston. The main journal 5 is connected to an electric motor. The connecting rod journal 3 is used to connect with the connecting rod body 4. Both the main journal 5 and the connecting rod journal 3 are connected to the crankshaft body 1. When the electric motor drives the main journal 5 to rotate, it will simultaneously drive the crankshaft body 1, the balance weight 2, and the connecting rod journal 3 to rotate, thereby controlling the connecting rod body 4 connected to the connecting rod journal 3 to move up and down, realizing the piston movement of one end of the connecting body 4 in the up and down direction inside the compressor.

[0029] A weight mechanism 6 is provided inside the balance weight 2. By means of the provided weight mechanism 6, the balance force of the balance weight 2 can be adjusted, so that when the electric motor drives the crankshaft body 1 to rotate along the main journal 5, the gravity at each position on the outer wall of the crankshaft body 1 is balanced, avoiding the situation of eccentric rotation of the crankshaft body 1, thereby affecting the accuracy of the piston movement position. Refer to the appendix Figure 2-4 , the weight mechanism 6 includes a first groove 61 and a second groove 62. Both the first groove 61 and the second groove 62 are opened inside the balance weight 2, and the first groove 61 and the second groove 62 are respectively on the left and right of the balance weight 2. A baffle 63 is provided on one side of both the first groove 61 and the second groove 62. The two baffles 63 are blocked at the openings of the first groove 61 and the second groove 62 by the screws provided there. Multiple weight blocks 64 are respectively placed inside the first groove 61 and the second groove 62. Installation plates 65 for positioning and installing the weight blocks 64 are provided inside both the first groove 61 and the second groove 62. One side of the installation plate 65 is fixedly connected with an installation screw rod 8. The weight block 64 is positioned and sleeved on the outer wall of the installation screw rod 8. A bolt 81 is threadedly sleeved on the outer wall of one end of the installation screw rod 8, so that multiple weight blocks 64 are fixedly placed inside the first groove 61 or the second groove 62 through the threaded cooperation between the installation screw rod 8 and the bolt 81.

[0030] Refer to the appendix Figure 4-5 , a threaded rod 66 is rotatably provided inside the first groove 61 and the second groove 62. One end of the installation plate 65 is threadedly sleeved on the outer wall of the threaded rod 66. Limit rods 67 for limiting the up and down movement of the installation plate 65 are fixedly connected inside both the first groove 61 and the second groove 62. The other end of the installation plate 65 is slidably provided on the outer wall of the limit rod 67. The up and down positions of the weight block 64 inside the first groove 61 and the second groove 62 are adjusted by the threaded rod 66. One end of the threaded rod 66 close to the threaded sleeve 71 is fixedly connected with a handle 68.

[0031] Therefore, when adjusting the counterweight of the crankshaft body 1, according to actual requirements, counterweight blocks 64 of a certain weight are respectively placed inside the first groove 61 and the second groove 62, and the counterweight blocks 64 of a certain weight are fixed to one side of the mounting plate 65 through the threaded fit between the mounting screw 8 and the bolt 81. At this time, the balance of the balance block 2 is adjusted in the left-right direction. Then, the threaded rod 66 in the first groove 61 or the second groove 62 is rotated, so that under the threaded action between the threaded rod 66 and the mounting plate 65, the mounting plate 65 and the counterweight blocks 64 of a certain weight mounted on one side thereof move upward or downward along the outer walls of the limiting rod 67 and the threaded rod 66. For example, when the counterweight blocks 64 in the first groove 61 or the second groove 62 move downward, the gravity of the balance block 2 near the lower position of the first groove 61 or the second groove 62 gradually increases.

[0032] Refer to the attached Figure 5-6 , a locking assembly 7 is provided at one end of the threaded rod 66. The locking assembly 7 is used to lock the position of the counterweight block 64 after moving up and down. The locking assembly 7 includes a threaded sleeve 71 and a threaded ring 72. One ends of the two groups of threaded sleeves 71 are respectively fixedly connected to the inner walls of the first groove 61 and the second groove 62. The threaded ring 72 is threadedly sleeved on the outer wall of the threaded rod 66. One end of the threaded ring 72 is threadedly inserted into the inside of the threaded sleeve 71. Thread teeth are provided on both the outer wall and the inner wall of the threaded ring 72. The threaded ring 72 is threadedly connected to the threaded teeth on the inner wall of the threaded sleeve 71 through the threaded teeth on its outer wall, and the threaded ring 72 is threadedly connected to the threaded teeth on the outer wall of the threaded rod 66 through the threaded teeth on its inner wall.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A compressor crankshaft connecting rod mechanism, comprising a crankshaft body (1) and a balance weight (2), a connecting rod journal (3) is arranged between the crankshaft body (1) and the balance weight (2), a connecting rod body (4) is arranged on the outer wall of the connecting rod journal (3), and a main journal (5) is arranged between two adjacent groups of the crankshaft body (1) and the balance weight (2), characterized in that, A counterweight mechanism (6) is provided inside the balance weight (2), and the counterweight mechanism (6) includes: A first groove (61) and a second groove (62), both of which are formed inside the balance weight (2); Counterweight blocks (64), and multiple groups of the counterweight blocks (64) are respectively placed inside the first groove (61) and the second groove (62); A threaded rod (66), which is rotatably arranged inside the first groove (61) and the second groove (62), and the counterweight block (64) is connected to the threaded rod (66), and the up and down positions of the counterweight block (64) inside the first groove (61) and the second groove (62) are adjusted by the threaded rod (66).

2. The compressor crankshaft connecting rod mechanism according to claim 1, characterized in that: Installation plates (65) for positioning and installing the counterweight blocks (64) are provided inside both the first groove (61) and the second groove (62). One end of the installation plate (65) is threadedly sleeved on the outer wall of the threaded rod (66), and limiting rods (67) for limiting the up and down movement of the installation plate (65) are fixedly connected inside both the first groove (61) and the second groove (62).

3. The compressor crankshaft connecting rod mechanism according to claim 2, characterized in that: A locking assembly (7) is provided at one end of the threaded rod (66), and the locking assembly (7) is used to lock the position of the counterweight block (64) after moving up and down.

4. The compressor crankshaft connecting rod mechanism according to claim 3, characterized in that: The locking assembly (7) includes a threaded sleeve (71) and a threaded ring (72). One end of two groups of the threaded sleeves (71) is respectively fixedly connected to the inner walls of the first groove (61) and the second groove (62). The threaded ring (72) is threadedly sleeved on the outer wall of the threaded rod (66), and one end of the threaded ring (72) is threadedly inserted into the inside of the threaded sleeve (71).

5. The compressor crankshaft connecting rod mechanism according to claim 4, characterized in that: A handle (68) is fixedly connected to the outer wall of the threaded rod (66) near the threaded sleeve (71).

6. The compressor crankshaft connecting rod mechanism according to claim 2, characterized in that: An installation screw (8) is fixedly connected to one side of the installation plate (65), the counterweight block (64) is positioned and sleeved on the outer wall of the installation screw (8), and a bolt (81) is threadedly sleeved on the outer wall of one end of the installation screw (8).

7. A compressor crankshaft connecting rod mechanism according to claim 1, characterized in that: Baffles (63) are provided on one side of both the first groove (61) and the second groove (62).

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