CN111120260B - Machining method of double-support frame, double-support frame and piston compressor - Google Patents
Machining method of double-support frame, double-support frame and piston compressor Download PDFInfo
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- CN111120260B CN111120260B CN201911312924.4A CN201911312924A CN111120260B CN 111120260 B CN111120260 B CN 111120260B CN 201911312924 A CN201911312924 A CN 201911312924A CN 111120260 B CN111120260 B CN 111120260B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
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Abstract
The invention provides a processing method of a double-support frame, the double-support frame and a piston compressor. Therefore, by adopting the scheme, complex and accurate positioning surfaces do not need to be processed on the cylinder seat and the first supporting piece, the structure and the processing difficulty are simplified, accurate positioning can be realized through the matching of the two fracture surfaces when the first supporting piece and the cylinder seat are assembled, complex positioning tools and positioning procedures are not needed, and the assembling difficulty is reduced. The technical difficulty of the existing double-support frame can be reduced, the production cost is reduced, the production efficiency is improved, and the double-support frame can be widely applied to the piston compressor.
Description
Technical Field
The invention relates to the technical field of piston compressors, in particular to a machining method of a double-support frame, the double-support frame and a piston compressor.
Background
In the traditional reciprocating piston compressor, the matching of the frame and the crankshaft installed in the frame adopts a cantilever stress structure, namely the frame supports one end of the crankshaft, and the other end of the crankshaft is suspended.
In a medium-large reciprocating compressor, a frame with a double-support structure can be seen, the frame comprises a cylinder seat and two support pieces which are respectively arranged on two sides of the cylinder seat, shaft holes of the two support pieces support two ends of a crankshaft, the compressor is stressed uniformly, and a pump body is abraded less. At least one supporting piece and the cylinder seat are of a split structure, so that a crankshaft, a connecting rod or a piston can be conveniently installed in the cylinder seat. In production, in order to ensure the positioning precision of the crankshaft, the shaft holes of the two supporting pieces need to be ensured to be concentric during machining and assembling. This requires machining of multiple precise mating surfaces and positioning during installation to maximize concentricity of the shaft holes. The problems of high process difficulty and complex structure of the double-support frame are caused. Therefore, the double-support frame has high manufacturing cost and is not easy to be widely used, and is not particularly adopted on a low-power piston compressor.
The scheme is a solution provided based on the existing double-support frame production difficulty, the process difficulty and the cost are reduced, and the piston compression type compressor is convenient to popularize and use in devices with low power, such as a piston compression type compressor.
Disclosure of Invention
The invention provides a machining method of a double-support frame, the double-support frame and a piston compressor, and aims to reduce the process difficulty of the conventional double-support frame.
In order to achieve the above object, according to one aspect of the present invention, there is provided a machining method of a dual support frame, the machining method including: manufacturing an integrally formed double-support frame, wherein the double-support frame comprises a cylinder seat, and a first support piece and a second support piece which are arranged on two sides of the cylinder seat in a one-to-one correspondence manner; machining assembling holes penetrating through the first supporting piece and the second supporting piece on the double-supporting frame, wherein the part, located on the first supporting piece, of each assembling hole is a first shaft hole, and the part, located on the second supporting piece, of each assembling hole is a second shaft hole, the first shaft hole is used for being matched with one end of a crankshaft installed in the cylinder seat, and the second shaft hole is used for being matched with the other end of the crankshaft; breaking a joint of the first support and the cylinder block to separate the first support and the cylinder block; wherein, the first support member after being separated forms a first fracture surface with an irregular shape, and the cylinder seat after being separated forms a second fracture surface with an irregular shape.
Further, breaking the connection of the first support and the cylinder block comprises: processing a swelling crack gap at the joint of the first supporting piece and the cylinder seat; and applying a preset load on the inner wall of the expansion crack gap to break the joint of the first support member and the cylinder seat.
Further, the processing method further comprises the following steps: after the first supporting piece and the cylinder seat are separated, a crankshaft, a connecting rod and a piston are arranged in the cylinder seat; one end of a crankshaft positioned in the cylinder block is inserted into the first shaft hole of the first supporting piece, and the other end of the crankshaft is inserted into the second shaft hole; and then fixedly connecting the first support with the cylinder seat.
Further, fixedly connecting the first support member with the cylinder block includes: buckling a first fracture surface of the first supporting piece with a second fracture surface of the cylinder seat; and then connecting the first support with the cylinder seat by adopting a fastening piece connection, welding or bonding mode.
Further, the processing method further comprises the following steps: and processing a connecting hole penetrating through the first support piece and the cylinder seat on the double-support frame, wherein the connecting hole is used for penetrating a fastener so as to fixedly connect the separated first support piece and the cylinder seat.
Further, the fitting hole is processed before breaking the joint of the first support and the cylinder block; and/or the connecting hole is processed before the connecting part of the first support and the cylinder seat is broken.
According to another aspect of the present invention, there is provided a dual-support frame, the dual-support frame being an integrally formed structure, the dual-support frame comprising: the cylinder block is provided with a mounting cavity for mounting a crankshaft; the first supporting piece is arranged on one side of the cylinder seat and is provided with a first shaft hole used for being matched with one end of the crankshaft; the second supporting piece is arranged on the other side of the cylinder block and is provided with a second shaft hole matched with the other end of the crankshaft, and the second shaft hole and the first shaft hole are coaxially arranged; the joint of the first supporting piece and the cylinder seat is internally provided with a preset expansion crack gap, and the joint of the first supporting piece and the cylinder seat is broken to separate the first supporting piece from the cylinder seat under the condition that the inner wall of the expansion crack gap bears a preset load.
Further, the expansion crack gap comprises: the expansion holes are used for allowing a tool to penetrate into the expansion holes so as to support and crack the connection part of the first support piece and the cylinder seat through the tool; and the auxiliary groove is positioned between two adjacent expansion holes.
Further, the expansion crack gap further comprises: the first guide groove is arranged on the inner wall of the cracking hole and is used for guiding at least one part of the joint of the first support and the cylinder seat to break along the extending direction of the first guide groove.
Further, the first supporting piece is of a plate-shaped structure, and the depth direction of the expansion crack gap extends along the radial direction of the first shaft hole.
Further, the expansion crack gap comprises: the cracking groove is used for penetrating a tool so as to crack a joint of the first support piece and the cylinder seat through the tool; the second guide groove is communicated with the expansion crack groove and is used for guiding at least one part of the joint of the first support piece and the cylinder seat to break along the extending direction of the second guide groove.
Furthermore, the extending direction of the notches of the second guide grooves is the same as that of the notches of the cracking grooves, the number of the second guide grooves is two, and the two second guide grooves are communicated with the two ends of the cracking grooves in a one-to-one correspondence manner.
Further, the cylinder block includes: the mounting cavity is arranged on the cylinder body, and the second supporting piece is arranged on one side of the cylinder body; the boss, the protrusion sets up the opposite side of cylinder body, first support piece sets up on the boss, the crack gap that rises is located first support piece with the junction of boss.
Further, the first supporting piece is of a plate-shaped structure, and the depth direction of the expansion crack gap extends along the axial direction of the first shaft hole.
Furthermore, the double-support frame is provided with a connecting hole, one section of the connecting hole is positioned on the cylinder seat, the other section of the connecting hole is positioned on the first support piece, and the connecting hole is used for penetrating a fastener so as to fixedly connect the separated first support piece and the cylinder seat.
According to another aspect of the present invention, there is provided a piston compressor comprising a double-supported frame, which is the double-supported frame provided above.
The technical scheme of the invention provides a processing method of a double-support frame, which comprises the following steps: manufacturing an integrally formed double-support frame, wherein the double-support frame comprises a cylinder seat, and a first support piece and a second support piece which are arranged on two sides of the cylinder seat in a one-to-one correspondence manner; processing assembly holes penetrating through the first support piece and the second support piece on the double-support frame, wherein the part of the assembly hole, which is positioned on the first support piece, is a first shaft hole, and the part of the assembly hole, which is positioned on the second support piece, is a second shaft hole, wherein the first shaft hole is used for being matched with one end of a crankshaft arranged in the cylinder seat, and the second shaft hole is used for being matched with the other end of the crankshaft; and breaking the joint of the first support and the cylinder seat to separate the first support and the cylinder seat, wherein an irregular first breaking surface is formed on the separated first support, and an irregular second breaking surface is formed on the separated cylinder seat.
By adopting the scheme, the two shaft holes of the two supporting pieces are processed together, so that the coaxiality of the two shaft holes is ensured, the first supporting piece and the cylinder seat are separated by adopting a fracture mode, two irregular fracture surfaces which can be mutually matched are formed on the first supporting piece and the cylinder seat, the first supporting piece and the cylinder seat can be accurately positioned by matching the two fracture surfaces, and the positioning precision after assembly is easily ensured. Therefore, by adopting the scheme, complex and accurate positioning surfaces do not need to be processed on the cylinder seat and the first supporting piece, the structure and the processing difficulty are simplified, accurate positioning can be realized through the matching of the two fracture surfaces when the first supporting piece and the cylinder seat are assembled, complex positioning tools and positioning procedures are not needed, and the assembling difficulty is reduced. Therefore, the technical difficulty of the existing double-support frame can be reduced, the production cost is reduced, the production efficiency is improved, and the double-support frame can be widely applied to a piston compressor or other devices.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a dual-support frame according to an embodiment of the present invention;
FIG. 2 shows an enlarged partial view of the dual support stand of FIG. 1;
FIG. 3 shows another schematic view of the dual support stand of FIG. 1;
FIG. 4 shows a schematic structural view of the cylinder block of the dual support frame of FIG. 1 after fracture;
FIG. 5 is a schematic view of the first support member of the dual support frame of FIG. 1 after breakage;
FIG. 6 is a schematic structural diagram of a dual-support frame according to a second embodiment of the present invention;
FIG. 7 shows an enlarged partial view of the dual support stand of FIG. 6;
fig. 8 shows another schematic view of the dual support stand of fig. 6.
Wherein the figures include the following reference numerals:
10. a cylinder block; 11. a cylinder body; 12. a boss; 13. a groove; 20. a first support member; 21. a first shaft hole; 22. a first plate body; 23. a second plate body; 30. expanding and cracking gaps; 31. cracking the hole; 32. an auxiliary groove; 33. a first guide groove; 34. a cracking groove; 35. a second guide groove; 40. connecting holes; 50. a crankshaft; 60. a connecting rod.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in the accompanying drawings, an embodiment of the present invention provides a method for processing a dual-support frame, including: manufacturing an integrally formed double-support frame, wherein the double-support frame comprises a cylinder seat 10 and a first support piece 20 and a second support piece which are arranged on two sides of the cylinder seat 10 in a one-to-one correspondence manner; machining assembling holes penetrating through the first support piece 20 and the second support piece on the double-support frame, wherein the part of the assembling hole, which is positioned on the first support piece 20, is a first shaft hole 21, and the part of the assembling hole, which is positioned on the second support piece, is a second shaft hole, wherein the first shaft hole 21 is used for being matched with one end of a crankshaft 50 installed in the cylinder seat 10, and the second shaft hole is used for being matched with the other end of the crankshaft 50; breaking the joint of the first supporter 20 and the cylinder block 10 to separate the first supporter 20 and the cylinder block 10; wherein, an irregular-shaped first fracture surface is formed on the first support 20 after the separation, and an irregular-shaped second fracture surface is formed on the cylinder block 10 after the separation.
The technical scheme of the invention provides a processing method of a double-support frame, which comprises the following steps: manufacturing an integrally formed double-support frame, wherein the double-support frame comprises a cylinder seat 10 and a first support piece 20 and a second support piece which are arranged on two sides of the cylinder seat 10 in a one-to-one correspondence manner; machining assembling holes penetrating through the first support piece 20 and the second support piece on the double-support frame, wherein the part of the assembling hole, which is positioned on the first support piece 20, is a first shaft hole 21, and the part of the assembling hole, which is positioned on the second support piece, is a second shaft hole, wherein the first shaft hole 21 is used for being matched with one end of a crankshaft 50 installed in the cylinder seat 10, and the second shaft hole is used for being matched with the other end of the crankshaft 50; the joint of the first support 20 and the cylinder block 10 is broken to separate the first support 20 and the cylinder block 10, a first broken surface with an irregular shape is formed on the separated first support 20, and a second broken surface with an irregular shape is formed on the cylinder block 10 after separation.
By adopting the scheme, because the two shaft holes of the two supporting pieces are processed together, the coaxiality of the two shaft holes is ensured, in addition, the first supporting piece 20 and the cylinder seat 10 are separated by adopting a fracture mode, two irregular fracture surfaces which can be mutually matched are formed on the first supporting piece 20 and the cylinder seat 10, so that the accurate positioning of the first supporting piece 20 and the cylinder seat 10 can be realized through the matching of the two fracture surfaces, and the positioning accuracy after the assembly is very easy to ensure. Therefore, by adopting the scheme, complex and accurate positioning surfaces do not need to be processed on the cylinder block 10 and the first supporting piece 20, the structure and the processing difficulty are simplified, accurate positioning can be realized through the matching of the two fracture surfaces when the first supporting piece 20 and the cylinder block 10 are assembled, complex positioning tools and positioning procedures are not needed, and the assembling difficulty is reduced. Therefore, the technical difficulty of the existing double-support frame can be reduced, the production cost is reduced, the production efficiency is improved, and the double-support frame can be widely applied to a piston compressor or other devices.
In the present embodiment, the dual support frame is manufactured by a casting technique, and the first support 20 and the cylinder block 10 are separated by a spalling technique. The double-support frame is made of materials or processes which are easy to realize the expanding crack technology, such as aluminum alloy, powder metallurgy and the like.
In the present embodiment, breaking the connection of the first support 20 and the cylinder block 10 includes: processing an expansion crack gap 30 at the joint of the first support member 20 and the cylinder seat 10; a predetermined load is applied to the inner wall of the expansion crack 30 to break the connection of the first supporter 20 and the cylinder block 10. The fracture of the joint of the first support member 20 and the cylinder block 10 can be facilitated by the expansion crack 30 in the above manner, and the fracture surface can be made to extend in the extending direction of the expansion crack 30.
The integrally formed double-support frame is processed by adopting a crack expansion technology, wherein the crack expansion technology is characterized in that a crack expansion gap is processed in an integrally formed structure by utilizing the fracture characteristic of a material to form an initial fracture source, then a normal stress perpendicular to a preset fracture surface is applied to separate the structure into two parts at the fracture part by brittle fracture, and the matching surfaces of the two separated parts have a completely meshed canine tooth staggered structure, so that the matching surfaces are ensured to be accurately matched without accurately processing a joint surface.
In this embodiment, the processing method further includes: after separating the first supporter 20 from the cylinder block 10, the crankshaft 50, the connecting rod 60, and the piston are installed in the cylinder block 10; one end of the crankshaft 50 located in the cylinder block 10 is inserted into the first shaft hole 21 of the first supporter 20, and the other end of the crankshaft 50 is inserted into the second shaft hole; the first support 20 is then fixedly connected to the cylinder block 10. After the crankshaft 50, the connecting rod 60 and the piston are assembled in the cylinder block 10, the first supporting member 20 is fixedly connected with the cylinder block 10, so that the first supporting member 20 and the cylinder block 10 can be precisely matched and the first supporting member 20 and the crankshaft 50 can be precisely matched.
Specifically, fixedly connecting the first support 20 with the cylinder block 10 includes: the first fracture surface of the first support 20 is buckled with the second fracture surface of the cylinder block 10; the first support member 20 is then attached to the cylinder block 10 using fasteners, welding or adhesives. Through the buckling of the first fracture surface of the first support 20 and the second fracture surface of the cylinder block 10, the first support 20 and the cylinder block 10 can be precisely positioned and matched, and after the two are fixedly connected, the relative positions before fracture can be recovered. When in connection, the first support member 20 can be connected with the cylinder block 10 by a fastener, welding or bonding mode according to requirements, so that the operation is convenient.
In this embodiment, the processing method further includes: a connecting hole 40 penetrating the first support member 20 and the cylinder block 10 is processed on the dual-support frame, and the connecting hole 40 is used for penetrating a fastener to fixedly connect the separated first support member 20 and the cylinder block 10. By providing the coupling hole 40, a fastener is inserted into the coupling hole 40, thereby achieving a reliable coupling of the first supporter 20 and the cylinder block 10. Specifically, the connection holes 40 may be threaded holes, and the fasteners may be bolts. In order to improve the coupling strength, the coupling hole 40 may be provided in plurality.
In the present embodiment, the fitting hole is processed before breaking the connection of the first support 20 and the cylinder block 10; and/or, the coupling hole 40 is processed before the coupling of the first supporter 20 and the cylinder block 10 is broken. Before breaking the joint of the first support member 20 and the cylinder block 10, an assembly hole is machined on the integrally formed double-support frame, so that the first support member 20 and the cylinder block 10 after being separated can ensure that the first shaft hole 21 and the second shaft hole in the assembly hole are concentrically arranged after being connected, the coaxiality is ensured, the assembly precision can be improved, and the abrasion of the crankshaft 50 is reduced. In addition, the first shaft hole 21 and the second shaft hole are processed together, so that the processing technology can be simplified, the clamping times can be reduced, and the production efficiency can be improved.
In the present embodiment, before breaking the connection portion between the first support member 20 and the cylinder block 10, the connection hole 40 is machined on the integrally formed dual-support frame, so that after the first support member 20 and the cylinder block 10 are connected, the positioning and assembling accuracy can be improved, and the wear of the crankshaft 50 can be reduced. Moreover, the two parts of the connecting hole 40 are processed together, so that the processing technology can be simplified, the clamping times can be reduced, and the production efficiency can be improved.
Another embodiment of the present invention provides a dual-support frame, the dual-support frame is an integrally formed structure, and the dual-support frame includes: the cylinder block 10, the cylinder block 10 has the installation cavity used for installing the crankshaft 50; a first supporter 20 disposed at one side of the cylinder block 10, the first supporter 20 having a first shaft hole 21 for being engaged with one end of the crankshaft 50; a second support member disposed at the other side of the cylinder block 10, the second support member having a second shaft hole for being fitted with the other end of the crankshaft 50, the second shaft hole and the first shaft hole 21 being coaxially disposed; wherein, the joint of the first support member 20 and the cylinder base 10 has a preset expansion crack 30 therein, and under the condition that the inner wall of the expansion crack 30 bears a preset load, the joint of the first support member 20 and the cylinder base 10 is broken to separate the first support member 20 and the cylinder base 10.
Due to the expansion crack 30 arranged in the double-support frame, the joint of the first support 20 and the cylinder base 10 is broken when the inner wall of the expansion crack 30 bears the preset load, so that the separated first support 20 has a first broken surface, the separated cylinder base 10 has a second broken surface, and both the first broken surface and the second broken surface are irregular surfaces. When the first support member 20 and the cylinder block 10 which are separated from each other are connected, the first fracture surface and the second fracture surface are buckled, so that the first support member 20 and the cylinder block 10 can be accurately positioned, and the relative position of the first support member 20 and the cylinder block 10 which are connected together after fracture is consistent with the relative position of the first support member and the cylinder block before fracture. Therefore, by adopting the scheme, complex and accurate positioning surfaces do not need to be processed on the cylinder block 10 and the first supporting piece 20, the structure and the processing difficulty are simplified, accurate positioning can be realized through the matching of the two fracture surfaces when the first supporting piece 20 and the cylinder block 10 are assembled, complex positioning tools and positioning procedures are not needed, and the assembling difficulty is reduced. Therefore, the technical difficulty of the existing double-support frame can be reduced, the production cost is reduced, the production efficiency is improved, and the double-support frame can be widely applied to a piston compressor or other devices.
Optionally, the cylinder block is provided with two grooves 13, the two grooves 13 are used for installing silencers, and the grooves 13 and the expansion cracks 30 are respectively positioned at two sides of the installation cavity. This facilitates the arrangement of the first support 20. The installation cavity comprises a first installation cavity and a second installation cavity which are communicated with each other, the first installation cavity is internally used for installing the crankshaft 50 and the connecting rod 60, the second installation cavity is used for installing the piston, and the crankshaft 50, the connecting rod 60 and the piston are sequentially connected to realize the reciprocating motion of the piston through the rotation of the crankshaft 50.
As shown in fig. 1 to 5, the expansion crack gap 30 includes: a plurality of expansion holes 31, through which a tool is inserted into the expansion holes 31 to support and break the connection between the first support member 20 and the cylinder block 10; and the auxiliary groove 32, wherein the auxiliary groove 32 is positioned between two adjacent cracking holes 31. This applies a load by means of a tool inserted into the expansion crack hole 31, thereby cracking the connection between the first supporter 20 and the cylinder block 10. Moreover, the auxiliary groove 32 can reduce the cracking area, reduce the cracking difficulty, and can guide the fracture surface to avoid disordered cracking.
In the present embodiment, the expansion crack 30 further includes: a first guide groove 33, the first guide groove 33 being provided on an inner wall of the expansion crack hole 31, the first guide groove 33 being used to guide at least a portion of a connection of the first support 20 and the cylinder block 10 to be broken in an extending direction of the first guide groove 33. The first guide groove 33 is provided to facilitate the fracture of the joint between the first support 20 and the cylinder block 10, and to guide the fracture direction so that the fracture surface extends in a predetermined direction.
Alternatively, in the present embodiment, the expansion crack hole 31 is a tapered hole, the first guide groove 33 is a wedge-shaped groove, and the auxiliary groove 32 is a rectangular groove. The expansion crack hole 31 is set to be a taper hole, so that the inner wall of the expansion crack hole 31 can be cracked conveniently. The first guide groove 33 is provided as a wedge-shaped groove, and the inner wall of the wedge-shaped groove is also facilitated to be cracked. Wherein, the auxiliary groove 32 can be a through groove to reduce the cracking difficulty. The auxiliary groove 32 may be provided in a rectangular shape. Optionally, each cracking hole 31 has two first guiding grooves 33 disposed oppositely therein to further reduce the cracking difficulty.
In the present embodiment, the first support 20 has a plate-shaped structure, and the depth direction of the expansion crack 30 extends along the radial direction of the first shaft hole 21. Through the arrangement, the fracture surface generated after fracture can extend along the radial direction of the first shaft hole 21, and the reduction of the structural strength caused by the fact that the thickness of the local position of the first supporting piece 20 is too thin is avoided.
In this embodiment, the dual-support frame has a connection hole 40, one section of the connection hole 40 is located on the cylinder block 10, the other section of the connection hole 40 is located on the first support member 20, and the connection hole 40 is used for passing a fastener to fixedly connect the separated first support member 20 and the cylinder block 10. The first support member 20 and the cylinder block 10 are fixedly connected by a fastener through the connecting hole 40. Specifically, the connection hole 40 is a threaded hole, and the connection hole 40 may be provided in plurality to improve connection strength.
As shown in fig. 6 to 8, in another embodiment, unlike the above-described embodiment, the split-expansion gap 30 includes: a cracking groove 34, wherein a tool is inserted into the cracking groove 34 to crack the connection part of the first support member 20 and the cylinder seat 10 through the tool; and a second guide groove 35, the second guide groove 35 communicating with the expansion groove 34, the second guide groove 35 for guiding at least a part of a joint of the first support 20 and the cylinder block 10 to be broken in an extending direction of the second guide groove 35. The joint of the first support member 20 and the cylinder block 10 can be supported and cracked in a manner of penetrating a tool into the expansion crack groove 34, and the forming direction of the fractured surface can be guided by arranging the second guide groove 35 communicated with the expansion crack groove 34, so that disordered fracture is avoided, controllability is improved, and cracking difficulty can be reduced.
In this embodiment, the extending direction of the notch of the second guide groove 35 is the same as the extending direction of the notch of the expansion crack groove 34, two second guide grooves 35 are provided, and the two second guide grooves 35 communicate with both ends of the expansion crack groove 34 in one-to-one correspondence. The joint of the first support member 20 and the cylinder block 10 can be further easily cracked, and the operation is convenient. Alternatively, the width of the second guide groove 35 is smaller than the width of the burst groove 34.
In the present embodiment, the cylinder block 10 includes: the cylinder body 11 is provided with a mounting cavity, and the second supporting piece is arranged on one side of the cylinder body 11; the boss 12 is protruded from the other side of the cylinder 11, the first support 20 is disposed on the boss 12, and the expansion crack gap 30 is located at the connection position of the first support 20 and the boss 12. By adopting the arrangement, the cracking area can be reduced, and the operation is convenient.
Optionally, the first support 20 includes a first plate 22 and a second plate 23 connected to each other, the first plate 22 and the second plate 23 are disposed in a T-shaped structure, the first plate 22 is connected to the boss 12, and the second plate 23 has a first shaft hole 21. The width of the first plate 22 is greater than that of the second plate 23, and the first plate 22 has two connecting holes 40, and the two connecting holes 40 are located on two sides of the second plate 23. This facilitates the arrangement of the coupling holes 40 and the coupling of the first support 20 with the cylinder block 10.
Further, the first support 20 has a plate-like structure, and the depth direction of the expansion crack 30 extends in the axial direction of the first shaft hole 21. Through this setting, can guide the extending direction of fracture face, avoid unordered fracture.
In another embodiment, the first supporting member 20 and the cylinder block 10 are separately cast or machined, but the mating surfaces and the mounting holes of the two are machined in advance, when machining concentric shaft holes, the first supporting member 20 and the cylinder block 10 are fastened together by bolts or the like, and then the shaft holes are machined together, so that the shaft holes of the first supporting member 20 and the cylinder block 10 are concentric, and after the crankshaft and the connecting rod are disassembled and mounted, the two can be assembled quickly.
Another embodiment of the present invention provides a piston compressor including a dual-support frame, the dual-support frame being the dual-support frame provided above. Through the technical scheme, the piston type compressor can be stressed uniformly, the abrasion is reduced, the performance is improved, and the manufacturing cost of the piston type compressor can be reduced. Moreover, the small and medium-sized piston type compressor can still adapt to the scheme. The scheme is a solution provided by applying a double-support technology in a small and medium-sized reciprocating piston compressor, so that the application difficulty is reduced, the process reliability is improved, and the performance level of the compressor is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. The utility model provides a dual-support frame, its characterized in that, dual-support frame is the integrated into one piece structure, dual-support frame includes:
a cylinder block (10), the cylinder block (10) having a mounting cavity for mounting a crankshaft (50);
a first supporter (20) provided at one side of the cylinder block (10), the first supporter (20) having a first shaft hole (21) for being fitted with one end of the crankshaft (50);
the second supporting piece is arranged on the other side of the cylinder seat (10) and is provided with a second shaft hole matched with the other end of the crankshaft (50), and the second shaft hole and the first shaft hole (21) are coaxially arranged;
wherein, a preset expansion crack gap (30) is arranged in the joint of the first support member (20) and the cylinder seat (10), and under the condition that the inner wall of the expansion crack gap (30) bears a preset load, the joint of the first support member (20) and the cylinder seat (10) is broken so as to separate the first support member (20) and the cylinder seat (10);
the expansion crack gap (30) comprises: a plurality of cracking holes (31), wherein a tool is penetrated into the cracking holes (31) so as to crack the connection part of the first support piece (20) and the cylinder seat (10) through the tool; and the auxiliary groove (32) is positioned between two adjacent cracking holes (31).
2. Double-support frame according to claim 1, characterized in that said expansion crack slot (30) further comprises:
the first guide groove (33) is arranged on the inner wall of the cracking hole (31), and the first guide groove (33) is used for guiding at least one part of the joint of the first support (20) and the cylinder seat (10) to break along the extending direction of the first guide groove (33).
3. The dual-support frame of claim 1, wherein the first support member (20) is a plate-shaped structure, and the expansion crack slit (30) has a depth direction extending in a radial direction of the first shaft hole (21).
4. Double-support frame according to claim 1, characterized in that said expansion crack slot (30) comprises:
a cracking groove (34), wherein a tool is penetrated into the cracking groove (34) so as to crack the connection part of the first support piece (20) and the cylinder seat (10) through the tool;
a second guide groove (35), the second guide groove (35) being in communication with the cracking groove (34), the second guide groove (35) being for guiding at least a portion of a connection of the first support (20) and the cylinder block (10) to break along an extending direction of the second guide groove (35).
5. Double-support frame according to claim 4, wherein the extension direction of the notch of the second guide slot (35) is the same as the extension direction of the notch of the expansion slot (34), and there are two second guide slots (35), and the two second guide slots (35) are in one-to-one correspondence with the two ends of the expansion slot (34).
6. Double-support frame according to claim 1, wherein said cylinder block (10) comprises:
the cylinder body (11), the said installation cavity is set up on the said cylinder body (11), the said second strutting piece is set up in one side of the said cylinder body (11);
the boss (12) is arranged on the other side of the cylinder body (11) in a protruding mode, the first supporting piece (20) is arranged on the boss (12), and the expansion crack gap (30) is located at the connecting position of the first supporting piece (20) and the boss (12).
7. The dual-support frame of claim 6, wherein the first support member (20) is a plate-shaped structure, and the expansion crack slit (30) has a depth direction extending in the axial direction of the first shaft hole (21).
8. The dual-support frame of claim 1, wherein the dual-support frame has a connection hole (40), one section of the connection hole (40) is located on the cylinder block (10), and the other section of the connection hole (40) is located on the first support member (20), and the connection hole (40) is used for a fastener to pass through so as to fixedly connect the separated first support member (20) and the cylinder block (10).
9. Piston compressor comprising a double-support frame, characterized in that it is a double-support frame according to any one of claims 1 to 8.
10. A method for machining a double-support frame, characterized in that it is used for a double-support frame according to any one of claims 1 to 8, and in that it comprises:
manufacturing an integrally formed double-support frame, wherein the double-support frame comprises a cylinder seat (10) and a first support piece (20) and a second support piece which are arranged on two sides of the cylinder seat (10) in a one-to-one correspondence manner;
machining assembling holes penetrating through the first supporting piece (20) and the second supporting piece on the double-supporting frame, wherein the part, located on the first supporting piece (20), of the assembling holes is a first shaft hole (21), and the part, located on the second supporting piece, of the assembling holes is a second shaft hole, the first shaft hole (21) is used for being matched with one end of a crankshaft (50) installed in the cylinder seat (10), and the second shaft hole is used for being matched with the other end of the crankshaft (50);
breaking the connection of the first support (20) and the cylinder block (10) to separate the first support (20) and the cylinder block (10);
wherein, the first support member (20) after being separated forms a first fracture surface with an irregular shape, and the cylinder seat (10) after being separated forms a second fracture surface with an irregular shape.
11. The machining method according to claim 10, characterized in that breaking the connection of the first support (20) and the cylinder block (10) comprises:
processing a swelling crack gap (30) at the joint of the first supporting piece (20) and the cylinder seat (10);
applying a preset load on the inner wall of the expansion crack gap (30) to break the joint of the first support member (20) and the cylinder block (10).
12. The method of processing as claimed in claim 10, further comprising:
after the first supporting piece (20) is separated from the cylinder seat (10), a crankshaft (50), a connecting rod (60) and a piston are arranged in the cylinder seat (10);
penetrating one end of a crankshaft (50) located in the cylinder block (10) into a first shaft hole (21) of the first support member (20), and penetrating the other end of the crankshaft (50) into a second shaft hole;
the first support (20) is then fixedly connected to the cylinder block (10).
13. The machining method according to claim 12, characterized in that fixedly connecting the first support (20) with the cylinder block (10) comprises:
firstly, buckling a first fracture surface of the first support (20) with a second fracture surface of the cylinder seat (10);
and then connecting the first support (20) with the cylinder seat (10) by adopting a fastening connection, welding or bonding mode.
14. The method of processing as claimed in claim 10, further comprising:
and machining a connecting hole (40) penetrating into the first support piece (20) and the cylinder seat (10) on the double-support frame, wherein the connecting hole (40) is used for penetrating a fastener so as to fixedly connect the separated first support piece (20) and the cylinder seat (10).
15. The process of claim 14,
the assembly hole is processed before the joint of the first support (20) and the cylinder block (10) is broken; and/or the presence of a gas in the gas,
the connection hole (40) is processed before the connection of the first support member (20) and the cylinder block (10) is broken.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312924.4A CN111120260B (en) | 2019-12-18 | 2019-12-18 | Machining method of double-support frame, double-support frame and piston compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312924.4A CN111120260B (en) | 2019-12-18 | 2019-12-18 | Machining method of double-support frame, double-support frame and piston compressor |
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| Publication Number | Publication Date |
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| CN111120260A CN111120260A (en) | 2020-05-08 |
| CN111120260B true CN111120260B (en) | 2021-10-01 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005264784A (en) * | 2004-03-17 | 2005-09-29 | Matsushita Electric Ind Co Ltd | Reciprocating refrigerant compressor and freezer |
| KR101231937B1 (en) * | 2011-01-18 | 2013-03-14 | 주식회사 옥서스 | Hybrid air-compressor provided with combination of eccentric shaft and cross-slider mechanism |
| CN201916164U (en) * | 2011-02-24 | 2011-08-03 | 黄石东贝电器股份有限公司 | Cylinder block with three-point limiting double bearings |
| CN202065079U (en) * | 2011-03-21 | 2011-12-07 | 浙江吉利汽车研究院有限公司 | Connecting structure for air cylinder body and main bearing cover |
| CN203809143U (en) * | 2014-03-17 | 2014-09-03 | 东风朝阳朝柴动力有限公司 | Cracking main bearing cap |
| CN106903492B (en) * | 2017-04-06 | 2019-04-26 | 北京北内柴油机有限责任公司 | Engine link rises disconnected method processing technology |
| CN108425833A (en) * | 2018-03-12 | 2018-08-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump assembly, piston compressor and heat-exchange system for piston compressor |
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