High-strength crankshaft for compressor

Abstract

The utility model discloses a high-strength crankshaft for a compressor, which relates to the field of compressors and comprises a crank, a spindle is arranged on one side of the crank, an insertion hole is formed in the center of one side of an inner cavity of the spindle, and an insertion column is arranged on one side of an inner cavity of the insertion hole. Through the elastic reset function of the fixing spring, the abutting column can be driven to move rightwards, when the abutting column moves rightwards, the clamping balls placed in the two arc-shaped containing grooves can be pushed into the arc-shaped clamping grooves from the two arc-shaped containing grooves and the through hole, and then the position of the small end of the crankshaft can be limited; therefore, the crankshaft small head and the crank can be firmly connected together in an anti-falling mode for use, the situation that connection of the crankshaft small head is not stable is avoided, the connection firmness of the crankshaft small head and the crank is improved to a certain degree, the crankshaft small head can be better matched with the crank for use, and the service life of the crankshaft small head is prolonged. And actual use is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of compressors, specifically a high-strength crankshaft for compressors. Background Technology

[0002] A compressor is a device that uses mechanical energy to increase low-pressure gas to high-pressure gas. Compressors achieve rapid gas compression through their own characteristics and are an indispensable part of modern industry and life. Therefore, compressors are widely used in refrigeration, air conditioning, industry, energy and other fields, and are the heart of refrigeration systems.

[0003] The compressor crankshaft is the core power transmission component of the compressor. The compressor crankshaft transmits the rotational motion of the motor to the piston through the connecting rod, realizing the compression and exhaust process of the compressor. Its structural design ensures efficient power transmission, while also withstanding the alternating bending stress and torsional stress from the cylinder. Therefore, the compressor crankshaft is an indispensable and important component of the compressor.

[0004] Traditional high-strength compressor crankshafts involve cumbersome disassembly and assembly of the crank and main shaft, making it difficult for operators to easily separate the crank and main shaft. This hinders convenient maintenance and upkeep of the crank and main shaft, resulting in poor practicality. Furthermore, the connection between the crankshaft small end and the crank in traditional high-strength compressor crankshafts is not very secure, leading to unstable connections and preventing the crankshaft small end from working properly with the crank, which is detrimental to actual use. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a high-strength crankshaft for compressors, so as to solve the technical problems of the cumbersome disassembly and assembly of the crank and main shaft of existing high-strength compressor crankshafts, and the poor connection between the crankshaft small end and the crank.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength crankshaft for a compressor, comprising a crank, a main shaft on one side of the crank, an insertion hole at the center of one side of the main shaft cavity, and an insertion post on one side of the insertion hole cavity, the insertion post penetrating the insertion hole cavity and connecting to the top center of one side of the crank, a crankshaft small end at the top of one side of the crank, a fixing hole at the top center of one side of the crank cavity, and the crankshaft small end extending into the fixing hole.

[0007] By adopting the above technical solution, the crank and spindle can be easily disassembled and assembled, while the connection between the crankshaft small end and the crank can be improved to a certain extent.

[0008] The present invention is further configured such that a circular hole is provided at the center of one side of the top of the inner cavity of the main shaft, and the circular hole is connected to the insertion hole. A threaded post is provided in the inner cavity of the circular hole, and an internal thread matching the threaded post is provided on the inner wall of the circular hole. A connecting screw hole is provided at the center of the top of the inner cavity of the threaded post, and a locking rod is connected at the center of the bottom of the threaded post. A locking hole is provided at the center of the top of one side of the inner cavity of the insertion post, and the bottom end of the locking rod penetrates the inner cavity of the circular hole and extends into the locking hole.

[0009] By adopting the above technical solution, the locking rod can be pulled out of the locking hole by pulling the threaded column upward, thereby removing the restriction on the insertion column, so that the operator can pull the insertion column out of the insertion hole, thus enabling the operator to easily complete the separation operation between the crank and the spindle.

[0010] The present invention is further configured such that a concave push post is provided on one side of the card rod, and a reset spring is connected at the center of one side of the concave push post, and one end of the reset spring is connected to the center of the inner wall of one side of the insertion hole.

[0011] By adopting the above technical solution, the elastic reset function of the reset spring can enable the reset spring to quickly drive the concave push column to move to the right, so that the locking rod can quickly fall into the concave push column, thereby limiting the position of the locking rod and preparing for the assembly and fixing of the crank and spindle.

[0012] The present invention is further configured such that: a stop post is provided near the center of the crankshaft small end cavity; an arc-shaped receiving groove is provided on one side of the stop post near the center of both sides; a retaining ball is provided on one side of the stop post near the center of both the upper and lower sides; a through hole is provided on one side of the crankshaft small end near the center of both the upper and lower sides; one side of each of the two retaining balls is movably connected to the adjacent through hole; two arc-shaped retaining grooves are provided at the top center of one side of the crankshaft inner cavity; both arc-shaped retaining grooves are connected to the fixing hole; the other side of each of the two retaining balls penetrates the adjacent through hole cavity and extends into the adjacent arc-shaped retaining groove.

[0013] By adopting the above technical solution, when the abutment moves to the right, the retaining ball placed inside the two arc-shaped receiving grooves can be pushed from the two arc-shaped receiving grooves and the through hole into the arc-shaped retaining groove, thereby limiting the position of the crankshaft small end, so that the crankshaft small end and the crank can be firmly and securely connected together for use.

[0014] The present invention is further configured such that a connecting hole is provided at the center of one side of the inner cavity of the abutment, and a T-shaped guide rod is movably connected to one side of the inner cavity of the connecting hole. One end of the T-shaped guide rod passes through the inner cavity of the connecting hole and is connected to the center of the inner wall of the small end of the crankshaft.

[0015] By adopting the above technical solution, the position of the abutment can be limited, allowing the abutment to move smoothly.

[0016] The present invention is further configured such that a fixing spring is sleeved on one end of the T-shaped guide rod, one end of the fixing spring is connected to the center of the side of the abutment column, and the other end of the fixing spring is connected to the center of the inner wall of the small end of the crankshaft.

[0017] By adopting the above technical solution, the fixed spring can quickly move the abutment to the right through its elastic reset function.

[0018] The present invention is further configured such that a push rod is connected to the center of one side of the top of the abutment, and a fixing screw hole is provided at the center of the top of the inner cavity of the push rod, and a sliding groove is provided at the center of one side of the top of the small end of the crankshaft, and the push rod is movably connected in the sliding groove near the top.

[0019] By adopting the above technical solution, the workers can quickly move the push rod to the left inside the slide groove by screwing the bolt into the fixing screw hole on the push rod.

[0020] In summary, the present invention has the following main advantages:

[0021] 1. This utility model rotates the threaded post in the opposite direction to turn it out of the round hole. Then, by pulling the threaded post upward, the locking rod can be pulled out of the locking hole, thereby removing the restriction on the insertion post. This allows the operator to pull the insertion post out of the insertion hole, thus achieving the effect of convenient disassembly and assembly of the crank and spindle. This allows the operator to easily complete the separation operation between the crank and the spindle, which in turn facilitates the operator's convenient maintenance and upkeep of the crank and spindle. It is highly practical and easy for operators to operate.

[0022] 2. This utility model utilizes the elastic reset function of the fixed spring to move the stop post to the right. When the stop post moves to the right, it pushes the retaining ball placed inside the two arc-shaped receiving grooves from the two arc-shaped receiving grooves and the through hole into the arc-shaped retaining groove, thereby limiting the position of the crankshaft small end. This securely connects the crankshaft small end and the crank arm together, preventing unstable connection of the crankshaft small end. This improves the connection strength between the crankshaft small end and the crank arm to a certain extent, allowing for better cooperation between the crankshaft small end and the crank arm, thus facilitating practical use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of a partially unfolded main shaft of the component of this utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the crank component of this utility model.

[0026] Figure 4 This is a partial front view structural diagram of the main shaft of the component of this utility model;

[0027] Figure 5 This is a partial front view schematic diagram of the crank component of this utility model.

[0028] In the diagram: 1. Crank; 2. Main shaft; 3. Threaded column; 4. Small end of crankshaft; 5. Push rod; 6. Insert column; 7. Clamping rod; 8. Concave push column; 9. Return spring; 10. Abutment column; 11. Clamping ball; 12. T-shaped guide rod; 13. Fixed spring. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The embodiments of this utility model will be described below based on its overall structure.

[0031] A high-strength crankshaft for compressors, such as Figures 1-5 As shown, it includes a crank 1, a main shaft 2 on one side of the crank 1, an insertion hole at the center of one side of the inner cavity of the main shaft 2, and an insertion post 6 on one side of the inner cavity of the insertion hole. One side of the insertion post 6 passes through the inner cavity of the insertion hole and connects to the center of the top of one side of the crank 1. A crankshaft small end 4 is provided at the top of one side of the crank 1, and a fixing hole is provided at the center of the top of one side of the inner cavity of the crank 1. One side of the crankshaft small end 4 extends into the fixing hole.

[0032] When the operator wants to connect the crankshaft small end 4 to the crank 1, the operator places the two retaining balls 11 inside the two arc-shaped receiving grooves. Then, the operator places the crankshaft small end 4 with the two retaining balls 11 on one side into the fixing hole on the crank 1. At this time, the external force on the fixing spring 13 disappears and it begins to contract inward, thereby driving the abutment 10 to move to the right. When the abutment 10 moves to the right, it pushes the two retaining balls 11 from the two arc-shaped receiving grooves and the through hole into the arc-shaped retaining grooves, thus limiting the position of the crankshaft small end 4. In this way, the crankshaft small end 4 and the crank 1 are connected. 1. The crankshaft small end 4 and crank 1 are securely connected together for use, so that the crankshaft small end 4 can better cooperate with the crank 1. When the operator needs to separate the crank 1 and the main shaft 2 for maintenance, the operator can rotate the threaded column 3 in the opposite direction to turn the threaded column 3 out of the round hole. Then, the operator can pull the threaded column 3 upward to pull the locking rod 7 out of the locking hole, thereby releasing the restriction on the insert 6. This achieves the purpose of convenient disassembly and assembly of the crank 1 and the main shaft 2, which facilitates the operator to conveniently maintain the crank 1 and the main shaft 2.

[0033] like Figure 1 , Figure 3 and Figure 5 As shown, a stop post 10 is provided near the center of the inner cavity of the crankshaft small end 4. An arc-shaped receiving groove is provided on one side of the inner cavity of the stop post 10 near the center of both sides. A retaining ball 11 is provided on one side of the stop post 10 near the center of both the upper and lower sides. A through hole is provided on one side of the crankshaft small end 4 near the center of both the upper and lower sides. One side of the two retaining balls 11 is movably connected to the adjacent through hole. Two arc-shaped retaining grooves are provided at the top center of one side of the inner cavity of the crank 1. Both arc-shaped retaining grooves are connected to the fixing hole. The other side of the two retaining balls 11 penetrates the inner cavity of the adjacent through hole and extends into the interior of the adjacent arc-shaped retaining groove.

[0034] When the operator wants to connect the crankshaft small end 4 to the crank 1 for use, first, the operator screws the bolt into the fixing screw hole on the push rod 5. Then, the operator pushes the push rod 5 to the left inside the slide groove using the bolt. When the push rod 5 moves to the left, it can drive the abutment 10 to move to the left. When the two receiving grooves and the two through holes are at the same level, the operator stops pushing the push rod 5. Next, the operator places the two retaining balls 11 into the two arc-shaped receiving grooves through the two through holes. After the operator has placed both retaining balls 11 into the two arc-shaped receiving grooves, the operator places the side of the crankshaft small end 4 with the two retaining balls 11 into the fixing hole on the crank 1. Then, the operator stops applying force to the push rod 5. At this time, the fixing spring 13 is subjected to... When the external force disappears, the crankshaft begins to contract inward, which in turn moves the abutment 10 to the right. When the abutment 10 moves to the right, it pushes the two retaining balls 11 from the two arc-shaped receiving grooves and the through hole into the arc-shaped retaining groove, thereby limiting the position of the crankshaft small end 4. This securely connects the crankshaft small end 4 and the crank 1 together, preventing unstable connection of the crankshaft small end 4. This improves the connection between the crankshaft small end 4 and the crank 1 to a certain extent, allowing the crankshaft small end 4 to work better with the crank 1, which is beneficial for practical use. After the crankshaft small end 4 and the crank 1 are securely connected, the operator can then unscrew the bolt from the fixing screw hole on the crankshaft small end 4.

[0035] like Figure 1 , Figure 3 and Figure 5 As shown, a push rod 5 is connected to the center of one side of the top of the abutment 10, and a fixing screw hole is opened at the center of the top of the inner cavity of the push rod 5. A sliding groove is opened at the center of one side of the top of the crankshaft small end 4, and the push rod 5 is movably connected in the sliding groove near the top.

[0036] By screwing the bolt into the fixing screw hole on the push rod 5, the operator can quickly move the push rod 5 to the left inside the slide groove by pushing the bolt.

[0037] like Figure 5 As shown, a connecting hole is provided at the center of one side of the inner cavity of the abutment 10, and a T-shaped guide rod 12 is movably connected to one side of the inner cavity of the connecting hole. One end of the T-shaped guide rod 12 passes through the inner cavity of the connecting hole and is connected to the center of the inner wall of one side of the crankshaft small end 4.

[0038] When the abutment 10 moves to the left or right, it can slide on the T-shaped guide rod 12, thereby limiting the position of the abutment 10 and enabling the abutment 10 to move smoothly.

[0039] like Figure 5As shown, a fixing spring 13 is sleeved on one end of the T-shaped guide rod 12. One end of the fixing spring 13 is connected to the center of one side of the abutment 10, and the other end of the fixing spring 13 is connected to the center of the inner wall of one side of the crankshaft small end 4.

[0040] The fixed spring 13 has an elastic reset function, which allows it to quickly move the abutment 10 to the right.

[0041] like Figure 1 , Figure 2 and Figure 4 As shown, a circular hole is provided at the center of the top side of the inner cavity of the spindle 2, and the circular hole is connected to the insertion hole. A threaded post 3 is provided in the inner cavity of the circular hole, and an internal thread matching the threaded post 3 is provided on the inner wall of the circular hole. A connecting screw hole is provided at the center of the top of the inner cavity of the threaded post 3, and a locking rod 7 is connected at the center of the bottom of the threaded post 3. A locking hole is provided at the center of the top of the inner cavity of the insertion post 6, and the bottom end of the locking rod 7 passes through the inner cavity of the circular hole and extends into the locking hole.

[0042] When workers need to separate crank 1 from spindle 2 for maintenance, they first screw the bolt into the connecting screw hole. Then, they rotate the threaded post 3 in the opposite direction to pull it out of the round hole. Next, they pull the threaded post 3 upwards to pull the retaining rod 7 out of the retaining hole, thus releasing the restriction on the insert 6 and allowing it to be pulled out of the insertion hole. This facilitates the easy disassembly and assembly of crank 1 and spindle 2, enabling workers to easily separate them and perform maintenance on both. The mechanism is highly practical and easy for operators to use. When the restriction on the insertion post 6 is lifted, the external force on the return spring 9 disappears, and it begins to extend outward, thereby driving the concave push post 8 to move to the right. When the concave push post 8 moves to the right, it can drive the insertion post 6 to move to the right, thus pushing the insertion post 6 out of the insertion hole. This allows the operator to pull the insertion post 6 out of the insertion hole to separate the crank 1 and the main shaft 2. At the same time, when the concave push post 8 moves to the right, it can cause the locking rod 7 to fall into the concave push post 8, thereby limiting the position of the locking rod 7. This prepares for the assembly and fixing of the crank 1 and the main shaft 2.

[0043] like Figure 4 As shown, a concave push post 8 is provided on one side of the lever 7, and a reset spring 9 is connected to the center of one side of the concave push post 8, and one end of the reset spring 9 is connected to the center of the inner wall of the insertion hole.

[0044] By utilizing the elastic reset function of the return spring 9, the return spring 9 can quickly drive the concave push post 8 to move to the right, thereby allowing the locking rod 7 to fall into the concave push post 8, thus limiting the position of the locking rod 7, which prepares for the assembly and fixing of the crank 1 and the main shaft 2.

[0045] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A high-strength crankshaft for a compressor, comprising a crank (1), characterized in that: A main shaft (2) is provided on one side of the crank (1). A insertion hole is provided at the center of one side of the inner cavity of the main shaft (2), and a insertion post (6) is provided on one side of the inner cavity of the insertion hole. One side of the insertion post (6) passes through the inner cavity of the insertion hole and is connected to the center of the top of one side of the crank (1). A crankshaft small end (4) is provided at the top of one side of the crank (1). A fixing hole is provided at the center of the top of one side of the inner cavity of the crank (1), and one side of the crankshaft small end (4) extends into the fixing hole.

2. The high-strength crankshaft for a compressor according to claim 1, characterized in that: A circular hole is provided at the center of the top side of the inner cavity of the main shaft (2), and the circular hole is connected to the insertion hole. A threaded post (3) is provided in the inner cavity of the circular hole, and an internal thread matching the threaded post (3) is provided on the inner wall of the circular hole. A connecting screw hole is provided at the center of the top of the inner cavity of the threaded post (3), and a locking rod (7) is connected at the center of the bottom of the threaded post (3). A locking hole is provided at the center of the top side of the inner cavity of the insertion post (6), and the bottom end of the locking rod (7) penetrates the inner cavity of the circular hole and extends into the locking hole.

3. The high-strength crankshaft for a compressor according to claim 2, characterized in that: The lever (7) has a concave push post (8) on one side, and a reset spring (9) is connected to the center of one side of the concave push post (8), and one end of the reset spring (9) is connected to the center of the inner wall of the insertion hole.

4. The high-strength crankshaft for a compressor according to claim 1, characterized in that: The crankshaft small end (4) has a stop post (10) near the center of its inner cavity. The stop post (10) has an arc-shaped receiving groove on one side near the center of both sides. The stop post (10) has a ball (11) near the center of both the upper and lower sides on one side. The crankshaft small end (4) has a through hole near the center of both the upper and lower sides on one side. The two balls (11) are movably connected to the adjacent through holes on one side. The crank (1) has two arc-shaped slots at the top center of one side of its inner cavity. The two arc-shaped slots are connected to the fixing holes. The two balls (11) penetrate the adjacent through hole cavities on the other side and extend into the adjacent arc-shaped slots.

5. A high-strength crankshaft for a compressor according to claim 4, characterized in that: A connecting hole is provided at the center of one side of the inner cavity of the abutment (10), and a T-shaped guide rod (12) is movably connected to one side of the inner cavity of the connecting hole. One end of the T-shaped guide rod (12) passes through the inner cavity of the connecting hole and is connected to the center of the inner wall of one side of the crankshaft small end (4).

6. A high-strength crankshaft for a compressor according to claim 5, characterized in that: A fixing spring (13) is sleeved on one end of the T-shaped guide rod (12). One end of the fixing spring (13) is connected to the center of one side of the abutment (10), and the other end of the fixing spring (13) is connected to the center of the inner wall of one side of the crankshaft small end (4).

7. A high-strength crankshaft for a compressor according to claim 4, characterized in that: A push rod (5) is connected to the center of one side of the top of the abutment (10), and a fixing screw hole is provided at the center of the top of the inner cavity of the push rod (5). A sliding groove is provided at the center of one side of the top of the crankshaft small end (4), and the push rod (5) is movably connected in the sliding groove near the top.

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