Crankshaft structure and compressor applying same

Abstract

The application discloses a crankshaft structure and a compressor applying the same. The crankshaft structure comprises a driving crankshaft with a first oil hole, a driven crankshaft with a second oil hole and a connecting assembly. The driven crankshaft and the driving crankshaft are arranged in an up-down mode. One end of the connecting assembly is arranged in the driving crankshaft, and the other end of the connecting assembly has a first state of being connected with the driven crankshaft and a second state of being disconnected with the driven crankshaft. After the crankshaft structure is applied to the compressor, whether the connecting assembly is connected with the driven crankshaft depends on the amount of lubricating oil. When the lubricating oil is sufficient, the connecting assembly is moved upward to be connected with the driven crankshaft under the action of the lubricating oil buoyancy. At this time, the rotating force of the driving crankshaft is transmitted to the driven crankshaft through the connecting assembly, and the compressor works normally. When the lubricating oil is insufficient, the connecting assembly cannot be moved upward, and the driving crankshaft cannot drive the driven crankshaft to work through the connecting assembly. At this time, the compressor cannot work, and the compressor wear and even scrapping caused by insufficient lubricating oil are avoided.

Description

Technical Field

[0001] This invention belongs to the field of gas compression technology, and relates to a crankshaft structure and a compressor using the same. Background Technology

[0002] A scroll compressor is a positive displacement compressor. Its compression components consist of a moving scroll, a stationary scroll, a pump body, and a crankshaft. Among these, oil supply to the pump body has always been a core issue in compressor technology. During scroll compression, the meshing of the moving and stationary scroll profiles, the meshing of the tooth tips and roots of the moving and stationary scrolls, and the relative sliding of the end faces of the moving and stationary scrolls all require oil lubrication. If any of these mating surfaces experiences insufficient oil supply, and the pump body continues to operate, irreversible damage will occur.

[0003] Traditional compressors typically focus only on increasing oil supply. When the oil supply to the compressor is severely insufficient, there is no corresponding handling structure, which often leads to compressor wear and even scrapping. Summary of the Invention

[0004] In view of this, the present invention provides a crankshaft structure and a compressor using the same, which solves the technical problem that traditional compressors do not have a corresponding handling structure when the oil supply is severely insufficient, leading to compressor wear and even scrapping.

[0005] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a crankshaft structure, the crankshaft structure including a driving crankshaft, a driven crankshaft, and a connecting assembly, the driving crankshaft having a first oil hole, the driven crankshaft having a second oil hole, the driven crankshaft and the driving crankshaft being arranged vertically such that the first oil hole and the second oil hole communicate with each other, one end of the connecting assembly being disposed in the driving crankshaft, and the other end of the connecting assembly having a first state of being connected to the driven crankshaft and a second state of being disengaged from the driven crankshaft.

[0006] In some embodiments, the connecting assembly includes a float oil reservoir, a float body, a chute, and an embedding groove. The float oil reservoir is disposed in the upper section of the drive crankshaft and communicates with a first oil hole disposed in the lower section of the drive crankshaft. The chute is formed on the side wall of the float oil reservoir. The embedding groove is disposed at the bottom of the driven crankshaft. The float body is located in the float oil reservoir, and the float body can slide along the chute so that its top is engaged in or disengaged from the embedding groove.

[0007] In some embodiments, the connection assembly further includes a torque transmission unit disposed within the driven crankshaft; and the torque transmission unit has a first state connected to the float body and a second state disconnected from the float body.

[0008] In some embodiments, the torque transmission unit includes a torque bar and a helical groove, the helical groove being formed on the side wall of the driven crankshaft, the torque bar being located in the helical groove and capable of rising or falling along the helical groove.

[0009] In some embodiments, one end of the torsion bar has a float post, the float body has a groove, and the float post matches the groove; the other end of the torsion bar has a torque post, and the torque post cooperates with the spiral groove.

[0010] In some embodiments, when the torque transmission unit is in a first state, one end of the float body is connected to the slide groove, and the other end of the float body is engaged with the embedded groove; when the torque transmission unit is in a second state, the float body is located inside the drive crankshaft.

[0011] In some embodiments, the float body has a through hole, through which lubricating oil in the first oil hole can enter the second oil hole.

[0012] In some embodiments, the side of the float body has a torque block that cooperates with the slide groove and the embedding groove, so that the float body can slide into the embedding groove along the slide groove, and the density of the float body is lower than the density of the lubricating oil, so that the float body can move up and down under the action of the lubricating oil; and / or the torsion bar is made of steel.

[0013] According to another aspect of this application, embodiments of the present invention provide a compressor comprising the crankshaft structure described above.

[0014] In some embodiments, the compressor further includes a housing assembly and an oil sump, an oil pump, and a pump body assembly disposed within the housing assembly. The oil pump is located in the oil sump, the driving crankshaft cooperates with the oil pump, and the driven crankshaft cooperates with the pump body assembly. When the connecting assembly is in a first state, the pump body assembly operates, and when the connecting assembly is in a second state, the pump body assembly does not operate.

[0015] Compared with the prior art, the crankshaft structure of the present invention has at least the following beneficial effects:

[0016] The crankshaft structure provided by the present invention includes a driving crankshaft, a driven crankshaft, and a connecting assembly. The driving crankshaft has a first oil hole, and the driven crankshaft has a second oil hole. The driven crankshaft and the driving crankshaft are arranged vertically so that the first oil hole and the second oil hole are connected. One end of the connecting assembly is disposed in the driving crankshaft, and the other end of the connecting assembly has a first state of being connected to the driven crankshaft and a second state of being disconnected from the driven crankshaft.

[0017] In this invention, the driving crankshaft and driven crankshaft are separately configured, and the connecting assembly allows the crankshaft structure to have two states. The first state is where one end of the connecting assembly is located in the driving crankshaft, and the other end is connected to the driven crankshaft. In this case, the driving crankshaft can drive the driven crankshaft to rotate via the connecting assembly, thus enabling the entire crankshaft structure to operate. The second state is where one end of the connecting assembly is located in the driving crankshaft, and the other end is disconnected from the driven crankshaft. In this case, the driving crankshaft cannot drive the driven crankshaft to rotate. When this crankshaft structure is applied to a compressor, whether the other end of the connecting assembly connects to the driven crankshaft depends on the amount of lubricating oil. When there is a lot of lubricating oil, the connecting assembly moves upward and connects to the driven crankshaft under the buoyancy of the lubricating oil. At this time, the rotational force of the driving crankshaft is transmitted to the driven crankshaft through the connecting assembly, and the compressor operates normally. However, when there is insufficient lubricating oil, the connecting assembly cannot move upward, and the driving crankshaft cannot drive the driven crankshaft to operate via the connecting assembly. In this case, the compressor cannot operate, thus avoiding the technical problem of compressor wear and even scrapping due to insufficient lubricating oil.

[0018] The compressor provided by this invention is designed based on the above-described crankshaft structure, and its beneficial effects are the same as those of the above-described crankshaft structure, which will not be repeated here.

[0019] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an exploded view of a crankshaft structure provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the active crankshaft in a crankshaft structure provided by an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the driven crankshaft in a crankshaft structure provided by an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the float body in a crankshaft structure provided by an embodiment of the present invention;

[0025] Figure 5This is another structural schematic diagram of the float body in a crankshaft structure provided by an embodiment of the present invention;

[0026] Figure 6 This is a cross-sectional view of a crankshaft structure provided in an embodiment of the present invention;

[0027] Figure 7 This is another cross-sectional view of a crankshaft structure provided in an embodiment of the present invention;

[0028] Figure 8 This is another exploded view of a crankshaft structure provided in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of another structure of the driven crankshaft in a crankshaft structure provided by an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the torsion bar in a crankshaft structure provided by an embodiment of the present invention;

[0031] Figure 11 This is another cross-sectional view of a crankshaft structure provided in an embodiment of the present invention;

[0032] Figure 12 This is a cross-sectional view of a compressor provided in an embodiment of the present invention;

[0033] Figure 13 This is another cross-sectional view of a compressor provided in an embodiment of the present invention.

[0034] in:

[0035] 1. Drive crankshaft; 11. First oil hole;

[0036] 2. Driven crankshaft; 21. Second oil hole;

[0037] 3. Connecting components; 31. Float oil tank; 32. Float body; 33. Slide groove; 34. Embedded groove; 35. Torque transmission unit; 321. Groove; 322. Through hole; 323. Torque block; 351. Torque bar; 352. Spiral groove; 3511. Float column; 3512. Torque column;

[0038] 4. Housing assembly;

[0039] 5. Oil bath;

[0040] 6. Oil pump;

[0041] 7. Pump body assembly. Detailed Implementation

[0042] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0043] In the description of this invention, it should be clearly stated that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Example 1

[0046] This embodiment provides a crankshaft structure, such as Figure 1-11 As shown, the crankshaft structure includes a driving crankshaft 1, a driven crankshaft 2, and a connecting assembly 3. The driving crankshaft 1 has a first oil hole 11, and the driven crankshaft 2 has a second oil hole 21. The driven crankshaft 2 and the driving crankshaft 1 are arranged vertically such that the first oil hole 11 and the second oil hole 21 are connected. One end of the connecting assembly 3 is disposed in the driving crankshaft 1, and the other end of the connecting assembly 3 has a first state of being connected to the driven crankshaft 2 and a second state of being disconnected from the driven crankshaft 2.

[0047] Specifically, the driving crankshaft 1 has a first oil hole 11 for the flow of lubricating oil; the driven crankshaft 2 has a second oil hole 21 for the flow of lubricating oil; when the driving crankshaft 1 and the driven crankshaft 2 are configured to fit together, the first oil hole 11 and the second oil hole 21 are connected, and there is a connecting component 3 between the first oil hole 11 and the second oil hole 21. Of course, in order to realize the flow of lubricating oil, there is also a corresponding oil passage on the connecting component 3.

[0048] Traditional crankshaft structures are generally a single unit. This embodiment cleverly divides it into two parts: a driven crankshaft 2 and a driving crankshaft 1. The driving crankshaft 1 and driven crankshaft 2 are separate, and the connecting component 3 allows the crankshaft structure to have two states: First, one end of the connecting component 3 is located within the driving crankshaft 1, and the other end is connected to the driven crankshaft 2. In this way, rotation of the driving crankshaft 1 drives the driven crankshaft 2 to rotate via the connecting component 3, thus enabling the entire crankshaft structure to operate. Second, one end of the connecting component 3 is located within the driving crankshaft 1, and the other end is detached from the driven crankshaft 2. In this case, the driving crankshaft 1... After rotation, it cannot drive the driven crankshaft 2 to rotate. After applying this crankshaft structure to the compressor, whether the other end of the connecting component 3 is connected to the driven crankshaft 2 depends on the amount of lubricating oil. When there is more lubricating oil, the connecting component 3 moves upward and connects to the driven crankshaft 2 under the action of the buoyancy of the lubricating oil. At this time, the rotational force of the driving crankshaft 1 is transmitted to the driven crankshaft 2 through the connecting component 3, and the compressor works normally. However, when there is not enough lubricating oil, the connecting component 3 cannot move upward, and the driving crankshaft 1 cannot drive the driven crankshaft 2 to work through the connecting component 3. At this time, the compressor cannot work, thus avoiding the technical problem of compressor wear or even scrap due to insufficient lubricating oil.

[0049] In a specific embodiment, the connecting component 3 includes a float oil tank 31, a float body 32, a sliding groove 33, and an embedding groove 34. The float oil tank 31 is disposed in the upper section of the drive crankshaft 1 and communicates with the first oil hole 11 disposed in the lower section of the drive crankshaft 1. The sliding groove 33 is formed on the side wall of the float oil tank 31. The embedding groove 34 is disposed at the bottom of the driven crankshaft 2. The float body 32 is located in the float oil tank 31, and the float body 32 can slide along the sliding groove 33 so that its top is locked in the embedding groove 34 or disengaged from the embedding groove 34.

[0050] The lower section of the active crankshaft 1 has a first oil hole 11, and the upper section of the active crankshaft 1 has a float oil pool 31. The lubricating oil through the first oil hole 11 can directly enter the float oil pool 31. Compared with the first oil hole 11, the diameter of the float oil pool 31 is larger, so that the float body 32 can be accommodated in the float oil pool 31.

[0051] More specifically, the float body 32 has a generally circular outline that matches the shape of the float oil tank 31. The side wall of the float body 32 cooperates with the slide groove 33 and can move up and down along the slide groove 33. When it moves to the point where it protrudes from the upper end onto the drive crankshaft 1, its upper end can be engaged in the embedding groove 34. In this way, the originally independent drive crankshaft 1 and driven crankshaft 2 are connected together.

[0052] Thus, with the above structure, when there is enough lubricating oil in the compressor, the lubricating oil enters the float oil sump 31 through the first oil hole 11 on the drive crankshaft 1. When there is enough lubricating oil in the float oil sump 31, under the action of the buoyancy of the lubricating oil, the float body 32 slides upward along the sliding groove 33. As the lubricating oil increases, the float body 32 continues to move upward until its upper end protrudes from the drive crankshaft 1 and is then stuck in the embedding groove 34. The embedding groove 34 serves two purposes: firstly, to hold the top of the float body 32 in place, and secondly, to limit the float body 32 from continuing to move upward. This causes the lower end of the crankshaft to detach from the driving crankshaft 1. At the same time, the lubricating oil in the float oil sump 31 enters the second oil hole 21 of the driven crankshaft 2 through the oil passage opened on the connecting assembly 3. In this state, the rotational force of the driving crankshaft 1 is transmitted to the driven crankshaft 2 through the connecting assembly 3, and the compressor works normally. However, when the lubricating oil is insufficient, it cannot make the float body 32 move upward, so it cannot connect the driving crankshaft 1 and the driven crankshaft 2 through the float body 32. At this time, the compressor cannot work, thus avoiding compressor wear or even scrap due to insufficient lubricating oil.

[0053] In a specific embodiment, in order to better transmit the force of the driving crankshaft 1 to the driven crankshaft 2, the connecting assembly 3 further includes a torque transmission unit 35, which is disposed inside the driven crankshaft 2; and the torque transmission unit 35 has a first state connected to the float body 32 and a second state disconnected from the float body 32.

[0054] The first and second states in this embodiment correspond to the first and second states of the connecting component 3 described above.

[0055] In the first state, the other end of the connecting component 3 is connected to the driven crankshaft 2, that is, the torque transmission unit 35 is connected to the float body 32. In this state, the float body 32 rises to engage with the embedded groove 34 under the buoyancy of the lubricating oil, and the torque transmission unit 35 is connected to the float body 32 to realize the transmission of force. In the second state, the other end of the connecting component 3 is disengaged from the driven crankshaft 2, that is, the torque transmission unit 35 is disengaged from the float body 32. In this state, the force of the driving crankshaft 1 cannot be transmitted.

[0056] In a specific embodiment, the torque transmission unit 35 includes a torque bar 351 and a spiral groove 352. The spiral groove 352 is formed on the side wall of the driven crankshaft 2. The torque bar 351 is located in the spiral groove 352 and can rise or fall along the spiral groove 352. The general outline of the torque bar 351 is a columnar structure, which can move up and down along the spiral groove 352.

[0057] In a specific embodiment, one end of the torsion bar 351 has a float post 3511, and the float body 32 has a groove 321, with the float post 3511 matching the groove 321; the other end of the torsion bar 351 has a torque post 3512, with the torque post 3512 cooperating with the spiral groove 352.

[0058] More specifically, two float posts 3511 are provided, extending from the bottom of the torsion bar 351 to both ends to form two float posts 3511. On the upper surface of the float body 32, there is an inwardly recessed groove 321 that matches the float posts 3511. Along the top of the torsion bar 351, a torque post 3512 extends to one side to form a torque post 3512 that engages with the spiral groove 352.

[0059] With the above structure, when there is enough lubricating oil in the float oil tank 31, causing the float body 32 to rise to a certain height, the float column 3511 fits in the groove 321. At this time, the active crankshaft 1 transmits force to the float body 32, and the float body 32 transmits force to the torsion bar 351 through the float column 3511. The torsion bar 351 transmits force to the driven crankshaft 2, thereby driving the crankshaft structure to operate normally.

[0060] In a specific embodiment, when the torque transmission unit 35 is in the first state, one end of the float body 32 is connected to the slide groove 33, and the other end of the float body 32 is engaged with the embedding groove 34; when the torque transmission unit 35 is in the second state, the float body 32 is located inside the drive crankshaft 1.

[0061] In a specific embodiment, the float body 32 has a through hole 322, through which lubricating oil in the first oil hole 11 can enter the second oil hole 21. The through hole 322 provided in this embodiment is the oil passage provided on the connecting component 3.

[0062] In a specific embodiment, the side of the float body 32 has a torque block 323 that cooperates with the slide groove 33 and the embedding groove 34, so that the float body 32 can slide into the embedding groove 34 along the slide groove 33, and the density of the float body 32 is lower than the density of the lubricating oil, so that the float body 32 can move up and down under the action of the lubricating oil.

[0063] Specifically, a columnar structure extends outward along the side of the float body 32. This columnar structure is the torque block 323. The torque block 323 cooperates with the slide groove 33, allowing the float body 32 to slide up and down.

[0064] In addition, density refers to the mass per unit volume of an object. In this embodiment, the density of the float body 32 is lower than that of the lubricating oil. Thus, under the buoyancy of the lubricating oil, the float body 32 can easily move upward and always be in contact with the surface of the lubricating oil. This allows it to directly reflect the level of the lubricating oil and provide a corresponding response when the level of the lubricating oil drops, thus preventing wear on the compressor.

[0065] The torsion bar 351 is made of steel.

[0066] The torsion bar 351 has a relatively high density and can be made of steel or a material with a large mass that can withstand a large torque. The movement of the torsion bar 351 is achieved through the rotational force of the crankshaft structure. In addition, the torsion bar 351 can move spirally in the spiral groove 352, and the frictional force of the spiral groove 352 is less than the component of the torsion bar's weight. If the torsion bar 351 does not receive torque, it will spiral down.

[0067] Example 2

[0068] This embodiment provides a compressor, which includes the crankshaft structure described in Embodiment 1.

[0069] The compressor provided in this embodiment includes the crankshaft structure of Embodiment 1, and therefore has all the beneficial effects of the crankshaft structure of Embodiment 1.

[0070] In a specific embodiment, such as Figure 12 and 13 As shown, the compressor also includes a housing assembly 4 and an oil sump 5, an oil pump 6, and a pump body assembly 7 disposed within the housing assembly 4. The oil pump 6 is located in the oil sump 5. The driving crankshaft 1 cooperates with the oil pump 6, and the driven crankshaft 2 cooperates with the pump body assembly 7. When the connecting assembly 3 is in the first state, the pump body assembly 7 is working. When the connecting assembly 3 is in the second state, the pump body assembly 7 is not working.

[0071] In the specific implementation process, when the compressor is started, the active crankshaft 1 works, and the oil pump 6 pumps the lubricating oil in the oil sump 5 into the first oil hole 11. When the lubricating oil is sufficient, the driven crankshaft 2 rotates under the action of buoyancy, thereby making the pump body assembly 7 work; when the lubricating oil is insufficient, the driven crankshaft 2 cannot rotate, and the pump body assembly 7 cannot work.

[0072] Under normal conditions, the compressor provided in this embodiment has a float body 32 embedded in a float oil sump 31, and two torque blocks 323 embedded in a sliding groove 33. The float body 32 can float up and down in the float oil sump 31, and the height is determined by the oil level of the lubricating oil.

[0073] The torque column 3512 end of the torque bar 351 is located in the spiral groove 352 of the driven crankshaft 2 and will not enter the float oil sump 31 of the driving crankshaft 1. When the torque column 3512 is at the lower limit, that is, when the torque column 3512 is above the plane of the driving crankshaft 1, the float column 3511 needs to be at a certain distance from the float body 32.

[0074] When the oil sump 5 of the compressor is full of lubricating oil, the compressor is started and the oil pump 6 pumps oil into the first oil hole 11 of the drive crankshaft 1, causing the oil level to rise. When the lubricating oil carries the float body 32 to the height of the float column 3511, the groove 321 in the float body 32 transmits torque to the torque bar 351 by embedding it into the float column 3511. As a result, the torque bar 351 spirals upward due to the torque column 3512 being in the spiral groove 352, until the torque column 3512 reaches the end of the spiral groove 352 and stops climbing. The torque of the drive crankshaft 1 is transmitted to the torque bar 351 through the float body 32, and then to the driven crankshaft 2 through the torque bar 351, thereby driving the crankshaft structure to operate normally.

[0075] When the lubricating oil in the compressor's oil sump 5 is insufficient, the float body 32 in the drive crankshaft 1 will descend due to the drop in oil level, and because it is pressed down by the torsion bar 351 above, it will descend rapidly, achieving a rapid response when there is a lack of oil.

[0076] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous technical features can be freely combined and superimposed.

[0077] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A crankshaft structure, characterized in that, The crankshaft structure includes a driving crankshaft, a driven crankshaft, and a connecting assembly. The driving crankshaft has a first oil hole, and the driven crankshaft has a second oil hole. The driven crankshaft and the driving crankshaft are arranged vertically such that the first oil hole and the second oil hole are connected. One end of the connecting assembly is disposed in the driving crankshaft, and the other end of the connecting assembly has a first state of being connected to the driven crankshaft and a second state of being disconnected from the driven crankshaft. The connecting assembly includes a float oil reservoir, a float body, a sliding groove, and an embedding groove. The float oil reservoir is located in the upper section of the drive crankshaft and communicates with a first oil hole located in the lower section of the drive crankshaft. The sliding groove is formed on the side wall of the float oil reservoir. The embedding groove is located at the bottom of the driven crankshaft. The float body is located in the float oil reservoir, and the float body can slide along the sliding groove so that its top is locked in the embedding groove or disengaged from the embedding groove.

2. The crankshaft structure according to claim 1, characterized in that, The connecting assembly further includes a torque transmission unit disposed within the driven crankshaft; and the torque transmission unit has a first state connected to the float body and a second state disconnected from the float body.

3. The crankshaft structure according to claim 2, characterized in that, The torque transmission unit includes a torque bar and a helical groove. The helical groove is formed on the side wall of the driven crankshaft. The torque bar is located in the helical groove and can rise or fall along the helical groove.

4. The crankshaft structure according to claim 3, characterized in that, One end of the torsion bar has a float post, and the float body has a groove, with the float post matching the groove; the other end of the torsion bar has a torque post, which engages with the spiral groove.

5. The crankshaft structure according to any one of claims 2-4, characterized in that, When the torque transmission unit is in the first state, one end of the float body is connected to the slide groove, and the other end of the float body is engaged with the embedded groove; when the torque transmission unit is in the second state, the float body is located inside the drive crankshaft.

6. The crankshaft structure according to any one of claims 1-4, characterized in that, The float body has a through hole, through which lubricating oil in the first oil hole can enter the second oil hole.

7. The crankshaft structure according to claim 3 or 4, characterized in that, The side of the float body has a torque block that cooperates with the slide groove and the embedding groove, so that the float body can slide into the embedding groove along the slide groove, and the density of the float body is lower than the density of the lubricating oil, so that the float body can move up and down under the action of the lubricating oil; and / or the torsion bar is made of steel.

8. A compressor, characterized in that, The compressor includes the crankshaft structure according to any one of claims 1-7.

9. The compressor according to claim 8, characterized in that, The compressor also includes a housing assembly and an oil sump, an oil pump, and a pump body assembly disposed within the housing assembly. The oil pump is located in the oil sump. The driving crankshaft cooperates with the oil pump, and the driven crankshaft cooperates with the pump body assembly. When the connecting assembly is in a first state, the pump body assembly operates. When the connecting assembly is in a second state, the pump body assembly does not operate.

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