Crankshaft connecting rod mechanism, compressor and refrigeration equipment

Abstract

The utility model discloses a crankshaft connecting rod mechanism, a compressor and refrigeration equipment, and belongs to the technical field of compressors, the crankshaft connecting rod mechanism comprises a crankshaft and a connecting rod, the crankshaft comprises a main shaft and an eccentric shaft which are connected, the connecting rod comprises a first rod body, a second rod body and a fastener, and the first rod body is provided with an inserting groove; the second rod body can be inserted into the inserting groove of the first rod body, a through hole penetrating through the inserting groove is formed in the outer wall of the first rod body, the second rod body is provided with at least two connecting holes, the at least two connecting holes are formed in the axial direction of the second rod body at intervals, and the second rod body can move in the inserting groove. Due to the fact that the first rod body and the second rod body can be connected through matching of the connecting holes in different positions and the through holes, the purpose of adjusting the total length of the connecting rod is achieved, the connecting rod can be matched with changes of the eccentric distance of a crankshaft, the center distance of a piston does not need to be adjusted, piston standardization can be achieved, the standardization degree of parts is improved, and production cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field especially is a kind of crankshaft connecting rod mechanism, compressor and refrigeration equipment. BACKGROUND

[0002] Currently, reciprocating compressor mostly adopts crankshaft and connecting rod structure, in order to meet the refrigerating capacity requirement of different compressors, the length of connecting rod needs to be selected according to the eccentricity of crankshaft pre-set, since connecting rod is integral structure, the distance between two ends of connecting rod is fixed after processing and forming, and the compatibility with different pistons or crankshafts is poor, the standardization degree of parts is low, and the production cost is also high. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in prior art is solved.For this purpose, the utility model provides a kind of crankshaft connecting rod mechanism, which can improve the standardization degree of parts, and is easy to process and assemble, which helps to reduce production cost.

[0004] The utility model further provides a compressor and a refrigeration equipment using the above-mentioned crankshaft connecting rod mechanism.

[0005] According to the crankshaft connecting rod mechanism of the first aspect embodiment of the utility model, the crankshaft includes a main shaft and an eccentric shaft connected with each other, and the eccentric shaft is arranged eccentrically with the main shaft; the connecting rod includes a first rod body, a second rod body and a fastener, one end of the first rod body is provided with a first connecting portion, and the end face of the other end is provided with an insertion slot, the insertion slot is arranged along the axial direction of the first rod body; one end of the second rod body is provided with a second connecting portion, the other end of the second rod body is inserted into the insertion slot, one of the first connecting portion and the second connecting portion is connected with the eccentric shaft, and the other is used for connecting with the piston of the compressor; the outer wall of the first rod body is provided with a through hole penetrating through the insertion slot, the second rod body is provided with at least two connecting holes, and the at least two connecting holes are arranged at intervals along the axial direction of the second rod body; the fastener is arranged in the through hole and one of the connecting holes to fixedly connect the first rod body and the second rod body.

[0006] According to the crankshaft connecting rod mechanism of the utility model embodiment, at least the following beneficial effects are achieved:

[0007] The connecting rod adopts a split structure, comprising a first rod body, a second rod body and a fastener, the first rod body is provided with a plug-in slot, the second rod body is inserted into the plug-in slot of the first rod body during assembly, the outer wall of the first rod body is provided with a through hole penetrating through the plug-in slot, the second rod body is provided with at least two connecting holes, the at least two connecting holes are arranged at intervals along the axial direction of the second rod body, the second rod body can move in the plug-in slot, so that the through hole can be communicated with the connecting holes at different positions, the fastener is used to pass through the through hole and one of the connecting holes, so that the first rod body and the second rod body are fixedly connected, thereby forming the overall structure of the connecting rod, the assembly is simple, the connecting rod is connected with the eccentric shaft through one of the first connecting part and the second connecting part, and the other is used for being connected with the piston of the compressor.

[0008] According to some embodiments of the utility model, the cross section of plug -in slot is round, the part of second rod body for inserting plug -in slot is cylinder.

[0009] According to some embodiments of the utility model, one of the inner wall of plug -in slot and the outer wall of second rod body is equipped with locating block, the other is equipped with locating slot, the locating slot is arranged along the axial direction of connecting rod, the locating block and the locating slot are slidingly matched to guide the second rod body to move in the plug -in slot, so that the through hole can be communicated with any one connecting hole.

[0010] According to some embodiments of the utility model, the locating slot is arranged on the inner wall of the plug-in slot, and the locating slot is arranged in a direction from the port of the plug-in slot to the first connecting part, and the locating block is arranged on the outer wall of the second rod body, and the locating block is arranged in a direction from the end of the second rod body to the second connecting part.

[0011] According to some embodiments of the utility model, the end of the main shaft is provided with a crank arm, the side, away from the main shaft, of the crank arm is provided with a mounting hole, one end of the eccentric shaft is a mounting portion, and the other end is a rotating shaft portion, the rotating shaft portion is connected with the first connecting part, and the mounting portion is detachably connected with the mounting hole.

[0012] According to some embodiments of the utility model, the first connecting part is a first shaft sleeve, the second connecting part is a second shaft sleeve, the axial direction of the first rod body is perpendicular to the axial direction of the first shaft sleeve, and the axial direction of the second rod body is perpendicular to the axial direction of the second shaft sleeve.

[0013] According to some embodiments of the present application, the mounting portion is connected with the mounting hole in interference fit, or the mounting portion is connected with the mounting hole in threaded connection.

[0014] According to some embodiments of the present application, the fastener is a pin, and the side wall of the first rod body is provided with two through holes which are distributed on the opposite two side walls of the insertion slot along the radial direction of the first rod body.

[0015] The compressor according to the second aspect of the present application comprises a crankcase, a piston and the crankshaft connecting rod mechanism according to the first aspect of the present application, the crankcase is provided with a cylinder, the piston is capable of moving along the axial direction of the cylinder, the main shaft is rotationally connected with the crankcase, the first connecting portion is connected with the eccentric shaft, and the second connecting portion is connected with the piston.

[0016] The compressor according to the present application has at least the following beneficial effects:

[0017] The compressor adopts the crankshaft connecting rod mechanism according to the above embodiments, the connecting rod adopts a split structure, the second rod body is inserted into the insertion slot of the first rod body during assembly, the fastener is passed through the through hole and one of the connecting holes, the first rod body and the second rod body are fixedly connected, thereby forming the overall structure of the connecting rod, and the assembly is simple; since the first rod body and the second rod body can be connected through the connecting holes and the through hole in different positions, the total length of the connecting rod can be adjusted, the connecting rod can match the change of the eccentric distance of the crankshaft, the center distance of the piston does not need to be adjusted, the standardization of the piston can be realized, the standardization degree of the parts is improved, the production cost is reduced, and the production efficiency of the compressor is improved.

[0018] The refrigeration equipment according to the third aspect of the present application comprises the compressor according to the second aspect of the present application.

[0019] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned from practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is an assembly structure schematic view of a crankshaft connecting rod mechanism and a piston according to an embodiment of the present application;

[0021] Figure 2 is an assembly structure schematic view of a first rod body and a second rod body according to an embodiment of the present application;

[0022] Figure 3 is an exploded structure schematic view of a first rod body and a second rod body according to an embodiment of the present application;

[0023] Figure 4is a structural schematic view of the first rod body in an embodiment of the utility model;

[0024] Figure 5 is a structural schematic view of the second rod body in an embodiment of the utility model;

[0025] Figure 6 is a disassembled structural schematic view of the crankshaft in an embodiment of the utility model;

[0026] Figure 7 is a structural schematic view of the main shaft and the crank arm in an embodiment of the utility model.

[0027] Reference signs:

[0028] Crankshaft connecting rod mechanism 10;

[0029] Crankshaft 100;Main shaft 110;Eccentric shaft 120;Rotating shaft part 121;Mounting part 122;Crank arm 130;Mounting hole 131;

[0030] Connecting rod 200;First connecting part 201;Second connecting part 202;First rod body 210;Plug-in slot 211;Through hole 212;Positioning slot 213;Second rod body 220;Connecting hole 221;First connecting hole 2211;Second connecting hole 2212;Third connecting hole 2213;Positioning block 222;First shaft sleeve 230;First shaft hole 231;Second shaft sleeve 240;Second shaft hole 241;

[0031] Piston 300. DETAILED DESCRIPTION

[0032] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0033] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "axial direction", "radial direction", "circumferential direction", "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0034] In the description of the utility model, if "first", "second" and the like are described, it is only for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0035] In the description of the utility model, it should be noted that the words such as setting, installation and connection should be understood in a broad sense, and the skilled person in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0036] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, and obviously, the following described embodiments are part of the embodiments of the utility model, not all embodiments.

[0037] Referring to Figure 1 The utility model discloses an embodiment provides a crank connecting rod mechanism 10, including crankshaft 100 and connecting rod 200, crankshaft 100 includes main shaft 110 and eccentric shaft 120, and the crank arm 130 is arranged between main shaft 110 and eccentric shaft 120, and the upper end of main shaft 110 is connected with the crank arm 130, and the lower end of eccentric shaft 120 is connected with the crank arm 130, and main shaft 110 and eccentric shaft 120 are located on the two sides opposite to the crank arm 130 respectively, and main shaft 110 and eccentric shaft 120 are eccentrically arranged. One end of connecting rod 200 is provided with first connecting part 201, and the other end is provided with second connecting part 202, and first connecting part 201 is connected with eccentric shaft 120, and second connecting part 202 is connected with piston 300.

[0038] Referring to Figure 2 In the embodiment, first connecting part 201 is first shaft sleeve 230, first shaft sleeve 230 is provided with first shaft hole 231, second connecting part 202 is second shaft sleeve 240, second shaft sleeve 240 is provided with second shaft hole 241, eccentric shaft 120 is arranged in first shaft hole 231 when assembling, so that first shaft sleeve 230 is rotatably connected on eccentric shaft 120, and the pin shaft of piston 300 is arranged in second shaft hole 241, so that second shaft sleeve 240 is rotatably connected on the pin shaft of piston 300.

[0039] It can be understood that when the power device drives main shaft 110 to rotate, eccentric shaft 120 rotates eccentrically relative to main shaft 110, and connecting rod 200 is driven to move by eccentric shaft 120, so as to drive piston 300 to reciprocate, so that piston 300 completes the processes such as suction, compression and exhaust in the cylinder of the compressor.

[0040] It can be understood that the axes of the first shaft sleeve 230 and the second shaft sleeve 240 are perpendicular to the axis of the rod body of the connecting rod 200, ensuring that the eccentric rotation of the eccentric shaft 120 is converted into the reciprocating motion of the connecting rod 200, and the sizes of the first shaft sleeve 230 and the second shaft sleeve 240 are set according to the sizes of the eccentric shaft 120 and the pin shaft, respectively. In some embodiments, the first connecting portion 201 can be the second shaft sleeve 240, and the second connecting portion 202 can be the first shaft sleeve 230, that is, the first connecting portion 201 is connected with the pin shaft of the piston 300, and the second connecting portion 202 is connected with the eccentric shaft 120.

[0041] In the related art, the connecting rod adopts an integrated structure, and the length of the connecting rod is designed according to the eccentricity of the crankshaft. After the eccentricity of the crankshaft is set, the length of the connecting rod can be determined. Since the center distance between the first shaft sleeve and the second shaft sleeve is fixed and cannot be adjusted after being formed, different eccentricities of the crankshaft need to be matched with different lengths of the connecting rod to meet the refrigeration capacity requirements of the compressor. However, the compatibility of the connecting rod is poor, and the center distance of the piston usually needs to be adjusted to match the connecting rod, the standardization degree of the parts is low, the design and processing cost is also high, and thus the overall cost of the compressor is also increased. The eccentricity of the crankshaft is the distance between the center axis of the main shaft and the center axis of the eccentric shaft.

[0042] To this end, referring to Figure 3 , the connecting rod 200 of the utility model embodiment adopts a split structure, the connecting rod 200 comprises a first rod body 210, a second rod body 220 and a fastener (not shown in the drawing), the first shaft sleeve 230 is arranged on the first rod body 210, the second shaft sleeve 240 is arranged on the second rod body 220, and the first rod body 210 and the second rod body 220 are detachably connected through the fastener.

[0043] Specifically, referring to Figure 4 and Figure 5 , one end of the first rod body 210 is provided with the first shaft sleeve 230, and the end face of the other end is provided with a plug-in slot 211, the plug-in slot 211 is arranged along the axial direction of the first rod body 210, the slot opening of the plug-in slot 211 is located on the end face of the end of the second rod body 220 away from the first shaft sleeve 230, and the plug-in slot 211 is arranged in the direction of the first shaft sleeve 230, that is, the first rod body 210 is a hollow rod body; one end of the second rod body 220 is provided with the second shaft sleeve 240, the second rod body 220 is a solid rod body, and the shape of the second rod body 220 matches the shape of the plug-in slot 211, so that the second rod body 220 can be inserted into the plug-in slot 211 from the slot opening and can move in and out along the plug-in slot 211.

[0044] Referring to Figure 4 and Figure 5As shown, in the embodiment, the outer wall of the first rod body 210 is provided with a through hole 212, the through hole 212 penetrates the insertion slot 211, the second rod body 220 is provided with three connecting holes 221, the three connecting holes 221 are arranged along the axial direction of the second rod body 220, and the through hole 212 and the connecting holes 221 can be penetrated by a fastener. When assembling, the second rod body 220 is inserted into the insertion slot 211, the through hole 212 corresponds to one of the connecting holes 221, then the fastener penetrates the through hole 212 and the connecting hole 221, and the second rod body 220 is fixed in the insertion slot 211, so as to realize the fixed connection of the first rod body 210 and the second rod body 220.

[0045] It can be understood that the fastener cooperates with the through hole 212 and the connecting hole 221 to achieve the positioning effect of the first rod body 210 and the second rod body 220. Since the three connecting holes 221 are distributed along the length direction of the second rod body 220, the through hole 212 can be communicated with any one of the connecting holes 221 during the movement of the second rod body 220 in the insertion slot 211, and the connecting holes 221 at different positions cooperate with the through hole 212, so that the connecting rod 200 has different lengths, and the center distance between the first shaft sleeve 230 and the second shaft sleeve 240 can be adjusted.

[0046] As shown in the example, Figure 2 and Figure 3 As shown in the example, along the direction of the second shaft sleeve 240 towards the first shaft sleeve 230, the three connecting holes 221 are sequentially a first connecting hole 2211, a second connecting hole 2212 and a third connecting hole 2213, Figure 2 As shown in the example, along the direction of the second shaft sleeve 240 towards the first shaft sleeve 230, the three connecting holes 221 are sequentially a first connecting hole 2211, a second connecting hole 2212 and a third connecting hole 2213, Figure 2 As shown in the example, along the direction of the second shaft sleeve 240 towards the first shaft sleeve 230, the three connecting holes 221 are sequentially a first connecting hole 2211, a second connecting hole 2212 and a third connecting hole 2213,

[0047] It can be understood that when the connecting rod 200 is matched with the crankshaft 100 with different eccentric distances, the connecting holes 221 at different positions are connected with the through holes 212 by adjusting, so as to adjust the distance between the first shaft sleeve 230 and the second shaft sleeve 240, so as to match the change of the eccentric distance, ensure that the compressor has better performance, and meet the refrigerating capacity requirement of the compressor. Since the connecting rod 200 itself can adjust the length, the crankshaft connecting rod mechanism 10 can be composed of the connecting rod 200 and the crankshaft 100 with different eccentric distances, the machining precision requirement of the connecting rod 200 is reduced, the center distance of the piston 300 does not need to be adjusted, the standardization of the piston 300 can be realized, the standardization degree of the parts is higher, the universality is higher, which is helpful to reduce the production cost, and the assembly is simple and convenient, so that the production efficiency of the compressor can be improved.

[0048] When the length of the connecting rod 200 needs to be adjusted, the fastener is removed, the position of the second rod body 220 is adjusted, the connecting holes 221 at different positions are communicated with the through holes 212, and the fastener is reinserted, so that the adjustment is completed, and the operation is simple and convenient. The length of the connecting rod 200 which needs to be adjusted is selected according to the refrigerating capacity requirement of the compressor, the eccentric distance of the crankshaft 100 and the like.

[0049] In some embodiments, the fastener is a pin, and the side wall of the first rod body 210 is provided with two through holes 212 which are distributed on the opposite side walls of the insertion slot 211 along the radial direction of the first rod body 210, that is, the pin can penetrate through the entire first rod body 210 through the two through holes 212 on the two sides, so that the two ends of the pin are supported and fixed, and the assembly structure is more stable and reliable. Of course, the fastener is not limited to the pin, and can also be a stud or other forms of fastener. For example, the two through holes 212 are threaded holes, and the two ends of the stud are threadedly connected with the threaded holes, so as to improve the structural stability.

[0050] It should be noted that the number of the connecting holes 221 is not limited to three, and the second rod body 220 can also be provided with two, four or more connecting holes 221, for example, four connecting holes 221 are arranged at intervals along the axial direction of the second rod body 220. It can be understood that the more the number of the connecting holes 221 is, the more the length adjustment gears of the connecting rod 200 are, and the higher the compatibility of the connecting rod 200 is, so that the connecting rod 200 can be more easily matched with different eccentric distances of the crankshaft 100. The number of the connecting holes 221 is selected according to the length requirement of the connecting rod 200, the change range of the eccentric distance and the like, so that the different compression volumes and the corresponding refrigerating capacity requirements of the compressor can be met.

[0051] Referring to Figure 4 and Figure 5As shown, the cross section of the insertion slot 211 in the embodiment is circular, specifically a cylindrical slot, and the part of the second rod body 220 that matches the insertion slot 211 is a cylinder, so the second rod body 220 is easy to insert into the insertion slot 211 and move along the insertion slot 211, the assembly operation is simple, and the processing is also easier. In some embodiments, the second rod body 220 can also be a square rod body, and the insertion slot 211 is a square slot that matches the square rod body. Of course, the cross-sectional shape of the second rod body 220 and the insertion slot 211 can also be other polygonal shapes, as long as the second rod body 220 and the insertion slot 211 are matched to be connected, for example, the cross-sectional shape of the second rod body 220 and the insertion slot 211 can be pentagonal, hexagonal, etc.

[0052] Referring to Figure 4 and Figure 5 As shown, the inner wall of the insertion slot 211 is provided with a positioning slot 213, which is arranged along the axial direction of the first rod body 210, specifically, the positioning slot 213 is arranged extending from the port of the insertion slot 211 towards the direction of the first shaft sleeve 230, and the cross section of the positioning slot 213 is roughly square. The outer wall of the second rod body 220 is provided with a positioning block 222, which matches the positioning slot 213, so that the positioning block 222 can slide along the positioning slot 213, for guiding the movement of the second rod body 220 in the insertion slot 211.

[0053] It can be understood that the positioning block 222 is arranged close to the end of the second rod body 220, and the port of the positioning slot 213 is located on the end surface of the first rod body 210, when the end of the second rod body 220 is close to the insertion slot 211, the positioning block 222 is aligned with the port of the positioning slot 213, and then the second rod body 220 is inserted into the insertion slot 211, the positioning block 222 and the positioning slot 213 can guide the movement of the second rod body 220 in the insertion slot 211, and the operation is simple.

[0054] Referring to Figure 2 As shown, since the through hole 212 can correspond to any one of the connecting holes 221, according to the required adjustment length of the connecting rod 200, the positioning block 222 and the positioning slot 213 are matched to guide, which can facilitate the movement of the second rod body 220 to the position where the through hole 212 corresponds to the corresponding connecting hole 221, so as to realize the quick adjustment of the length of the connecting rod 200; moreover, when the positioning block 222 moves in the positioning slot 213, in the circumferential direction of the connecting rod 200, the positioning slot 213 limits the positioning block 222, avoiding the rotation of the second rod body 220 in the insertion slot 211, and ensuring that the through hole 212 and the connecting hole 221 are quickly positioned in the axial direction of the connecting rod 200, and the positioning is more quick and accurate.

[0055] It should be noted that the positioning block 222 is protruded on the outer wall of the second rod body 220, the positioning groove 213 is recessed on the inner wall of the insertion groove 211 in the embodiment, the positioning block 222 is specifically a protruding rib, one end of the protruding rib is flush with the end face of the second rod body 220, and the other end extends in the direction of the second shaft sleeve 240, so that the protruding rib is more closely matched with the positioning groove 213, and the guiding effect is more stable. The positioning groove 213 and the first rod body 210 are an integral molding structure, and the positioning block 222 and the second rod body 220 are an integral molding structure, so that the processing is easy to implement.

[0056] In some embodiments, the number of the positioning block 222 and the positioning groove 213 is not limited to one, two positioning grooves 213 can be arranged on the inner wall of the insertion groove 211, the two positioning grooves 213 are arranged along the circumference of the insertion groove 211, two protruding ribs are arranged on the outer wall of the second rod body 220, the two protruding ribs are arranged along the circumference of the second rod body 220, and the two protruding ribs are arranged one by one corresponding to the two positioning grooves 213, so that the stability of the guiding structure is improved.

[0057] Of course, the positioning groove 213 is not limited to being arranged on the first rod body 210, and the positioning block 222 is not limited to being arranged on the second rod body 220. In other embodiments, the positioning block 222 can also be arranged on the first rod body 210, that is, the positioning block 222 is protruded on the inner wall of the insertion groove 211, and the positioning groove 213 is arranged on the second rod body 220 and is formed on the outer wall of the second rod body 220 along the axial direction of the second rod body 220, so that the positioning block 222 and the positioning groove 213 can be matched to guide. The specific shape, size and number of the positioning block 222 and the positioning groove 213 are selected according to actual application requirements.

[0058] Referring to Figure 6 In some embodiments, the crankshaft 100 adopts a split structure, specifically, the main shaft 110 and the crank arm 130 are an integral structure, and the eccentric shaft 120 and the crank arm 130 are connected in a detachable manner. The crank arm 130 is provided with a mounting hole 131 on the side away from the main shaft 110, one end of the eccentric shaft 120 is a mounting portion 122, and the other end is a rotating shaft portion 121. The mounting portion 122 and the rotating shaft portion 121 are an integral molding structure, the rotating shaft portion 121 is connected with the first shaft sleeve 230, and the mounting portion 122 is detachably connected with the mounting hole 131. During processing, the mounting hole 131 is formed on the crank arm 130 according to the preset eccentric distance, and the eccentric shaft 120 is connected with the mounting hole 131 through the mounting portion 122.

[0059] Referring to Figure 7As shown, the mounting hole 131 is a circular blind hole, and the mounting portion 122 is in a cylindrical shape, which is easy to process. In some embodiments, the mounting portion 122 and the mounting hole 131 can be connected by interference fit, so that the mounting portion 122 and the mounting hole 131 can be tightly fitted, and the connection structure is stable and reliable. Of course, the cross-sectional shape of the mounting hole 131 and the mounting portion 122 is not limited to a circular shape, but can also be a square or other polygonal shape. The mounting hole 131 and the mounting portion 122 with the above cross-sectional shape can be connected by interference fit. The shape, size and other parameters of the mounting hole 131 and the mounting portion 122 can be selected according to actual requirements.

[0060] In other embodiments, the mounting hole 131 is a threaded hole, and the mounting portion 122 is in a cylindrical shape and has a threaded outer peripheral wall. The mounting portion 122 and the mounting hole 131 are connected by screwing, which is firm in structure and convenient to assemble, and ensures that the eccentric shaft 120 and the main shaft 110 have a stable eccentric distance.

[0061] The utility model embodiment further provides a kind of compressor, and the compressor is specifically reciprocating compressor, it includes crankshaft 100 box, piston 300 and the crankshaft connecting rod mechanism 10 of above-mentioned embodiment, crankshaft 100 box is provided with cylinder, piston 300 is slidably arranged in cylinder, main shaft 110 is rotatably connected with crankshaft 100 box, first shaft sleeve 230 is sleeved in eccentric shaft 120, second shaft sleeve 240 is connected with the pin shaft of piston 300.

[0062] When the power device in the compressor drives the main shaft 110 to rotate, the eccentric shaft 120 rotates eccentrically relative to the main shaft 110, drives the connecting rod 200 to move through the eccentric shaft 120, thereby driving the piston 300 to reciprocate along the axial direction of the cylinder, and realizing the processes of suction, compression and exhaust of the piston 300 in the cylinder of the compressor.

[0063] Since the connecting rod 200 adopts a split structure, when the connecting rod 200 is matched with the crankshaft 100 with different eccentric distances, the connecting hole 221 at different positions is connected with the through hole 212 by adjusting, so as to adjust the distance between the first shaft sleeve 230 and the second shaft sleeve 240, thereby being able to cooperate with the change of eccentric distance, ensuring that the compressor has better performance and meets the refrigerating capacity requirement of the compressor. The eccentric distance of the crankshaft 100 is set in advance, and then the total length of the connecting rod 200 is adjusted according to the first rod body 210 and the second rod body 220, so that the center distance of the piston 300 does not need to be adjusted, the piston 300 can be standardized, the standardization degree of parts is improved, the universality is higher, the assembly is simple and convenient, the cost is saved and the working efficiency of the compressor is improved, and it is also conducive to the standardization management and control of compressor parts.

[0064] The utility model also proposes a kind of refrigeration equipment, the refrigeration equipment can be refrigerator, air conditioner etc., and the refrigeration equipment includes the compressor of above-mentioned embodiment, the specific structure of the compressor refers to above-mentioned embodiment, since refrigeration equipment has adopted all technical solutions of above-mentioned all embodiments, thus at least have all beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer repeat.

[0065] The utility model has been described in detail above in connection with the drawings, but the utility model is not limited to the above-mentioned embodiments, within the knowledge range possessed by ordinary skilled person in the art, various changes can also be made without departing from the purpose of the utility model.

Claims

1. A crankshaft connecting rod mechanism, characterized by, The connecting rod comprises a first rod body, a second rod body and a fastener, one end of the first rod body is provided with a first connecting part, and the end face of the other end is provided with an insertion slot, the insertion slot is arranged along the axial direction of the first rod body; one end of the second rod body is provided with a second connecting part, the other end of the second rod body is inserted into the insertion slot, one of the first connecting part and the second connecting part is connected with the eccentric shaft, and the other is used for being connected with a piston of a compressor. The outer wall of the first rod body is provided with a through hole penetrating through the insertion slot, the second rod body is provided with at least two connecting holes, the at least two connecting holes are arranged along the axial direction of the second rod body at intervals, and the fastener is arranged through the through hole and one of the connecting holes, so that the first rod body and the second rod body are fixedly connected. One of the inner wall of the insertion slot and the outer wall of the second rod body is provided with a positioning block, and the other is provided with a positioning slot arranged along the axial direction of the connecting rod; the positioning block and the positioning slot are in sliding fit to guide the movement of the second rod body in the insertion slot, so that the through hole can be in communication with any one of the connecting holes. The cross section of the insertion slot is circular, and the part of the second rod body for inserting into the insertion slot is a cylindrical body. The positioning slot is arranged on the inner wall of the insertion slot, and the positioning block is arranged on the outer wall of the second rod body.

2. The crankshaft connecting rod mechanism of claim 1 wherein, The end of the main shaft is provided with a crank arm, the side of the crank arm away from the main shaft is provided with a mounting hole, one end of the eccentric shaft is a mounting part, and the other end is a rotating shaft part, the rotating shaft part is connected with the first connecting part, and the mounting part is detachably connected with the mounting hole.

3. The crankshaft connecting rod mechanism of claim 1 wherein, The first connecting part is a first shaft sleeve, the second connecting part is a second shaft sleeve, the axial direction of the first rod body is perpendicular to the axial direction of the first shaft sleeve, and the axial direction of the second rod body is perpendicular to the axial direction of the second shaft sleeve.

4. The crankshaft connecting rod mechanism of claim 1 wherein, The mounting part is in interference fit connection with the mounting hole, or the mounting part is in threaded connection with the mounting hole.

5. The crankshaft connecting rod mechanism of claim 4 wherein, The fastener is a pin, the side wall of the first rod body is provided with two through holes, and the two through holes are distributed on the opposite two side walls of the insertion slot along the radial direction of the first rod body.

6. The crankshaft connecting rod mechanism of claim 5 wherein, The connecting rod comprises a first rod body, a second rod body and a fastener, one end of the first rod body is provided with a first connecting part, and the end face of the other end is provided with an insertion slot, the insertion slot is arranged along the axial direction of the first rod body; one end of the second rod body is provided with a second connecting part, the other end of the second rod body is inserted into the insertion slot, one of the first connecting part and the second connecting part is connected with the eccentric shaft, and the other is used for being connected with a piston of a compressor.

7. The crankshaft connecting rod mechanism of claim 1 wherein, The connecting rod comprises a first rod body, a second rod body and a fastener, one end of the first rod body is provided with a first connecting part, and the end face of the other end is provided with an insertion slot, the insertion slot is arranged along the axial direction of the first rod body; one end of the second rod body is provided with a second connecting part, the other end of the second rod body is inserted into the insertion slot, one of the first connecting part and the second connecting part is connected with the eccentric shaft, and the other is used for being connected with a piston of a compressor.

8. A compressor characterized by, ​ ​ ​ ​ 9. A refrigeration appliance characterized in that, ​

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