CN103437903B - A kind of crankcase, combination body and the equipment using the combination body - Google Patents

Abstract

A combined body, comprising: a crankcase, a raceway seat detachably arranged on the crankcase, and a guide rail arranged on the raceway seat; front and rear main bearing holes are arranged on the front and rear walls of the crankcase; The outer side of the upper wall, the left wall and the right wall is provided with a raceway seat assembly surface, and the upper wall, the left wall and the right wall of the crankcase are also provided with openings communicating with the inner cavity of the crankcase; the raceway seat includes a raceway seat Body and guide rail base; a piston rod passing hole is provided on the raceway base body; a guide rail for guiding the reciprocating parts is provided on the top of the guide rail base; the center line of the guide rail base and the piston rod passing hole The center is staggered by a predetermined distance; the crankcase mounting surface of the raceway seat fits with the corresponding raceway seat assembly surface on the crankcase, and the raceway seat is assembled on the crankcase through a fastening structure. The combined machine body of the invention is easy to process and has low manufacturing cost. The invention also discloses a crankcase and equipment using the combined machine body.

Description

A crankcase, combined body and equipment using the combined body

This application claims the priority of the Chinese patent application submitted to the China Patent Office on May 02, 2013, the application number is 201310157657.4, and the title of the invention is "a crankcase, a combined body and a device using the combined body", the entire content of which Incorporated in this application by reference.

technical field

The invention relates to the technical field of mutual conversion between reciprocating motion and rotary motion. In particular, it relates to an equipment combination body using a mechanism for mutual conversion between reciprocating and rotating motions without connecting rods. The invention also relates to a crankcase and a device using said combined body.

Background technique

In conventional internal combustion engines and compressors, the conversion between the reciprocating motion of the piston and the rotational motion of the crankshaft is achieved by a crank-and-rod mechanism. However, in the crank-link mechanism, due to the existence of the connecting rod, the internal combustion engine and the compressor of the crank-link mechanism have defects such as bulky, heavy, and poor balance performance.

In order to solve the above problems, Chinese patent document CN85200358B discloses a kind of "slider crank block reciprocating piston type internal combustion engine"; Chinese patent document CN85100359B discloses a "slider crank block reciprocating piston type compressor"; In the conversion mechanism of the reciprocating motion and the rotary motion of the compressor, the crank connecting rod mechanism is replaced by the crank circular slider mechanism. Wherein, the crank circular slider mechanism includes a circular slider, a piston and a crankshaft, and an eccentric circular hole is arranged on the circular slider. A circular slider accommodating hole is arranged on the piston seat of the piston. When assembling, place the circular slider in the described circular slider accommodating hole, and the circular slider can rotate in the described circular slider accommodating hole; the crank pin of the crankshaft is assembled in the described eccentric circular hole, and the crank pin can be Rotate in the eccentric circular hole.

Taking the operation of an internal combustion engine as an example, the movement process of the mechanism is as follows: the combustion gas in the combustion chamber expands and pushes the piston to move, and the piston drives the circular slider arranged in it to reciprocate, and the circular slider rotates in the piston at the same time, so The synthesis of the reciprocating motion and the rotating motion makes the central axis of the eccentric circular hole on the circular slider rotate around the central axis of the crankshaft; and the central axis of the eccentric circular hole coincides with the axis of the crank pin of the crankshaft, so that the piston can be realized The conversion of the reciprocating motion of the crankshaft to the rotary motion of the crankshaft. The compressor can adopt the same structure, and the crankshaft is driven by the motor to rotate, and the reciprocating motion of the piston is realized through the cooperation relationship between the slider, the crankshaft and the piston, and then the compressed medium performs work.

Both the internal combustion engine and the compressor disclosed in the above-mentioned Chinese patent documents have a single-cylinder structure. When the crank-slider mechanism moves, there is a live point problem, that is, when the piston moves to the top dead center, there is a phenomenon of uncertain motion state. For this reason, in the above-mentioned Chinese patent documents, an internal gear pairing structure is adopted to solve this problem. For the specific arrangement and structure, please refer to the above-mentioned Chinese patent documents, which will not be described too much here. This makes the crank circular slider mechanism complicated, and because it is a single-cylinder mechanism, it is difficult to balance high-order inertial forces, and its dynamic balancing effect is not ideal.

Based on the above-mentioned problems of the single-cylinder crank circular slider machine, a "crank double circular slider reciprocating piston internal combustion engine" is disclosed in Chinese patent document CN1067741C; Chinese patent document CN1067742C discloses a "crank multi-circular slider reciprocating piston internal combustion engine". Improvements were made to the above problems. Specifically, by setting the crank circular slider mechanism as a slider group structure including two or three sliders, correspondingly, each slider is provided with a corresponding piston, and the phase difference between adjacent sliders is set at 180 degrees. The corresponding pistons are then arranged perpendicular to each other. When the pistons perpendicular to each other reciprocate, they can overcome the living point problem and convert their respective reciprocating inertial forces into rotational inertial forces. The rotational inertial forces can be easily balanced through the configuration blocks set on the crankshaft, which also solves the problem of single It is difficult for the cylinder machine to balance the high-order inertia force. In addition, the two ends of the piston can choose to set different working parts according to the needs, for example, the piston head of the internal combustion engine, the piston head of the compressor, or one of the pistons does not have any working part, just for the other piston to overcome the active point and convert the inertial force, This may be called a balancing slider.

It is not difficult to see that the crank circular slider structure formed by the double circular slider or the triple circular slider group has the effect of being able to overcome the live point and having a good dynamic balance effect. Compared with traditional internal combustion engines and compressors, it also has the advantages of compact structure, light weight, low noise and small vibration. But, as mentioned above, in the crank circle slider structure of double-circle slider or three-circle slider, it is necessary to have the piston (or dynamic balance slider) whose direction of motion is arranged perpendicular to each other, and the crankshaft also requires the above-mentioned two pistons (or dynamic balance). Sliders) are all vertical, subject to the requirements of this vertical setting, it is necessary to set up a corresponding structure on the body of the equipment that cooperates with the crank circular slider mechanism, that is, to accommodate two pistons (dynamic balance sliders) and provide a guided cylinder ( or runway) perpendicular to each other, and at the same time perpendicular to the center line of the front and rear crankshaft bearing holes, which puts forward high requirements on the machining of the machine body. Moreover, a slight deviation in the machining will easily cause problems such as scuffing and other cylinders. In severe cases The slider crank mechanism will be locked and cannot operate.

Contents of the invention

The invention provides a combined body to solve the above-mentioned problems of the existing equipment body without a connecting rod reciprocating and rotating motion mutual conversion mechanism. The present invention further provides a crankcase and equipment using the combined machine body.

The invention provides a combined machine body, which is applied to equipment that adopts a mechanism for mutual conversion between reciprocating and rotating motions without connecting rods, including: a crankcase, a raceway seat detachably arranged on the crankcase, and a on the guide rail;

The crankcase is a cavity enclosed by the front wall, the rear wall, the left wall, the right wall and the upper wall and the inside is a cavity; the front and rear walls of the crankcase are provided with crankshaft bearing The through holes are called the front main bearing hole and the rear main bearing hole respectively; the raceway seat assembly surface is arranged on the outer side of the upper wall, which is called the upper raceway seat assembly surface; the outer sides of the left wall and the right wall are A raceway seat assembly surface is provided, which is called a side raceway seat assembly surface; openings communicating with the inner cavity of the crankcase are also provided on the upper wall, left wall and right wall of the crankcase;

The raceway seat includes a raceway seat body and a guide rail base integrated with the raceway seat body; wherein, the opposite sides of the raceway seat body are respectively provided with a crankcase mounting surface matched with the raceway seat assembly surface and for The cylinder liner installation structure of the cylinder liner is installed; the through hole that runs through its thickness direction and is opened on the crankcase installation surface and the cylinder liner installation structure is also provided on the raceway seat body, which is called the piston rod through hole; The guide rail base is arranged on the same side as the crankcase installation surface on the raceway seat body, and a guide rail for guiding the reciprocating parts is provided on the top of the guide rail base; Stagger by a predetermined distance;

During assembly, the guide rail base on the raceway seat enters the inner cavity of the crankcase through the opening on the crankcase wall, and the crankcase mounting surface of the raceway seat fits with the corresponding raceway seat assembly surface on the crankcase. Assemble the track seat on the crankcase.

Optionally, the assembly surface of the upper raceway seat and the assembly surface of the side raceway seat are perpendicular to each other, and both are parallel to the line connecting the centers of the front and rear main bearing holes.

Optionally, the guide rail is integrally formed with the guide rail base, and the side of the guide rail away from the guide rail base is set as a guide surface for cooperating with the reciprocating member of the crank circular slider mechanism.

Optionally, the guide rail is in the shape of a long bar, and a guide surface cooperating with the reciprocating moving part is provided on it; the guide rail and the guide rail base are detachable structures.

Optionally, the guide surface is a concave arc surface, a convex arc surface, a V-shaped surface or a plane.

Optionally, positioning pins are also included; corresponding positions on the raceway seat and the crankcase wall are respectively provided with positioning pin holes matched with the positioning pins; when assembling, the corresponding positions on the raceway seat and the crankcase wall The positioning pin holes are aligned, and the positioning pins are inserted into the positioning pin holes.

Optionally, it also includes a lower guide rail seat and a lower guide rail arranged on the lower guide rail seat, the lower guide rail seat is arranged at the lower part of the crankcase and is arranged opposite to the guide rail base of the piston seat on the upper wall of the crankcase, correspondingly , the lower guide rail is aligned with the guide rail on the piston seat on the upper wall of the crankcase.

Optionally, a cylinder liner is included; one end surface of the cylinder liner is set to match the cylinder liner installation structure on the raceway seat body; when assembling, the end surface of the cylinder liner fits with the cylinder liner installation structure , the center line of the cylinder liner is aligned with the center of the piston rod passing hole, and is fixed as a whole by bolts.

The present invention also provides a device using a mechanism for mutual conversion between reciprocating and rotating motions without connecting rods, and the device uses the combined body described in any one of the above claims.

Optionally, the device is an internal combustion engine, a compressor, a vacuum pump or a mud pump.

Optionally, the equipment is an I-shaped twin-cylinder machine, a V-shaped twin-cylinder machine, a T-shaped three-cylinder machine or a single-cylinder machine.

Optionally, the device has at least two cylinders, and at least one cylinder is a combustion chamber of an internal combustion engine, and at least one cylinder is a working chamber of a compressor, a vacuum pump or a mud pump.

Optionally, the mechanism for mutual conversion between reciprocating and rotating motions without connecting rods is a crank circular slider mechanism or a moving shaft-end shaft mechanism.

The present invention also provides a kind of crankcase, which is applied to the equipment adopting the mechanism of mutual conversion between reciprocating and rotary motion without connecting rod, wherein, the crankcase is surrounded by front wall, rear wall, left wall, right wall and upper wall The cavity formed and the inside is a cavity; on the front and rear walls of the crankcase, there are through holes for accommodating crankshaft bearings, which are respectively called the front main bearing hole and the rear main bearing hole; on the upper wall The outside is provided with a track seat assembly surface, which is called the upper track seat assembly surface; the outside of the left wall and the right wall is provided with a track seat assembly surface, which is called a side track seat assembly surface; , The left wall and the right wall are also provided with openings communicating with the inner cavity of the crankcase.

Compared with the prior art, the present invention has the following advantages: the combined machine body of the present invention, except for the bearing hole, does not have any processed surface inside the crankcase, and the outer wall surface is not provided with the structure combined with the cylinder liner and other special purposes The structure needs to be processed only the ordinary plane (runway seat assembly surface) and the threaded holes and openings for installing the raceway seat; the runway seat of the combined body is installed to the crankshaft through the runway seat assembly surface and positioning on the crankcase wall on the box; the guide rail set on the track seat can be integrally formed with the track, or can be processed separately and then assembled with the track seat; it can be seen that since the crankcase, the track seat and the guide rail can be processed separately, they are only positioned on the plane during installation The geometric relationship of different parts is not only simple to process, but also simple to assemble, which greatly reduces the difficulty and cost of manufacturing.

In addition, since the cylinder liner installation structure is also provided on the raceway seat, the cylinder liner and the crankcase are no longer an integral structure, which greatly simplifies the structure of the body The processing technology of the crankcase; it also allows the cylinder liner and the crankcase to be made of different materials according to the needs, so that the internal combustion engine, vacuum pump, compressor, mud pump and other machines with different purposes but all using the non-linkage reciprocating mechanism can share a platform , taking into account both cost and function (especially strength) considerations. This greatly reduces the cost of manufacturing, using and maintaining the machine.

Description of drawings

Fig. 1 is the structural schematic diagram of the embodiment of the combined machine body that is provided with cylinder liner of the present invention;

Fig. 2 is one of the sectional views of the embodiment of the combined body of the present invention;

Fig. 3 is the second cross-sectional view of the embodiment of the combined body of the present invention;

Fig. 4 is the structural representation of the crankcase of the composite body that forms the embodiment of the present invention;

Fig. 5 is the structural representation of the combined body runway seat that forms the embodiment of the present invention;

Fig. 6 is a schematic structural view of a detachable guide rail applied in a combined body according to an embodiment of the present invention.

detailed description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

The combined body of the present invention will be described in detail below in conjunction with the accompanying drawings.

Please refer to FIG. 2 and FIG. 3 , which are the first and second schematic diagrams of the combined body of the present invention, respectively.

In this embodiment, the combined body includes a crankcase 1 , a raceway seat 2 detachably arranged on the crankcase, and a guide rail 3 arranged on the raceway seat 2 . Wherein, the guide rail 3 and the track base 2 can be integrally formed, or can be a detachable structure.

The crankcase 1, the track seat 2 and the guide rail 3 will be described in detail below in conjunction with the accompanying drawings.

Crankcase

Please refer to FIG. 4 , which is a structural schematic view of the crankcase forming the composite body of the present invention. The crankcase 1 includes a cavity surrounded by a front wall 1-1, a rear wall 1-2, a left wall 1-3, a right wall 1-4 and an upper wall 1-5, and the inside is a cavity. Its internal space can be used to accommodate the crankshaft, the circular slider passing through the crankpin of the crankshaft, and the piston seat for accommodating the circular slider (here, the body of the crank circular slider mechanism is used as an example for illustration, and other reciprocating and rotating mutual conversion mechanisms without connecting rods) In other words, the inner space of the crankcase accommodates the corresponding moving parts).

The front wall 1-1 and the rear wall 1-2 are respectively provided with through holes for accommodating crankshaft bearings, which are respectively called the front main bearing hole 1-1a and the rear main bearing hole 1-2a. Wherein, the setting positions of the front main bearing hole 1-1a and the rear main bearing hole 1-2a are corresponding, and the line connecting the centers of the two is the crankshaft rotation axis.

The front and rear main bearing holes are used to provide support for the crankshaft without a connecting rod reciprocating and rotating operation mutual conversion mechanism. In order to improve the strength and rigidity of the body, in this embodiment, the two main bearing holes extend axially between the body Outside, so that the axial width of the bearing hole increases.

The outer sidewalls of the upper wall 1-5, the left wall 1-3 and the right wall 1-4 of the crankcase 1 are all provided with raceway seat fitting surfaces matched with the raceway seat, which are respectively referred to as the upper raceway seat assembly surface 1. -5b, the left track seat assembly surface 1-3b and the right track seat assembly surface (not shown). In an optional situation, the left track seat assembly surface 1-3b is parallel to the right track seat assembly surface, and both are perpendicular to the upper track seat assembly surface 1-5b, and the upper track seat assembly surface 1-5b, the left raceway seat assembly surface 1-3b and the right raceway seat assembly surface are all parallel to the center line of the front and rear main bearing holes (front main bearing hole 1-1a and rear main bearing hole 1-2a). The above-mentioned track seat assembly surface is not only used as the mating surface when the crankcase and the track seat are assembled, but also as the positioning surface for the geometric relationship between the guide rail on the track seat and the two main bearing holes, and the geometric relationship with the guide rails on other track seats. .

The upper wall 1-5 of the crankcase, the left wall 1-3 and the right wall 1-4 are also respectively provided with openings communicating with the inner cavity of the crankcase, which are respectively called the third opening 1-5a, the first opening The hole 1-3a and the second opening 1-4a. The openings of the third opening 1-5a, the first opening 1-3a and the second opening 1-4a on the outside of the crankcase wall are all located on the corresponding raceway seat assembly surface, for example, the third opening 1-4a The opening of 5b on the outside of the crankcase wall is located on the assembly surface of the upper raceway seat. In this embodiment, the third opening 1-5a, the first opening 1-3a and the second opening 1-4a are all rectangular openings, and the size of the openings along the long side direction needs to meet the requirements of the running track seat. The rail base can be fitted through this opening into the crankcase interior cavity. Under the condition that the above assembly requirements are met, the openings may have various shapes, which will not be listed here.

In addition, a plurality of assembly holes are also provided outside the crankcase upper wall 1-5, the left wall 1-3 and the right wall 1-4, for example, on the upper wall 1-5 surrounding the third opening 1-5b Several mounting holes 1-5d are provided. The assembly holes are threaded holes, which are used to cooperate with bolts to fasten the raceway seat on the crankcase 1 .

The bottom of the crankcase 1 is also provided with a pedestal 1-6 integrally arranged with the crankcase, and the pedestal 1-6 protrudes from the crankcase along the front, rear, left and right walls of the crankcase 1. Outside the outer wall. Setting the base 1-6 increases the overall strength and rigidity of the crankcase on the one hand, and also serves as a base when the crankcase as a whole is fixed to the frame or the base. In addition, a matching structure for assembling with the oil pan is also provided at the lower part of the base 1-6.

In order to further improve the overall strength and rigidity of the crankcase 1, reinforcing ribs can also be arranged on the inner wall of the cavity of the crankcase 1.

track seat

Please refer to FIG. 5 , which is a schematic structural view of the raceway seat constituting the combined body of the present invention. In this embodiment, the track seat includes a track seat body 2-1 and a guide rail base 2-2 integrally provided with the track seat body. Wherein, the opposite sides on the raceway seat body 2-1 are respectively provided with a crankcase installation surface 2-1a matched with the raceway seat assembly surface on the crankcase and a cylinder liner installation structure 2-1b for installing the cylinder liner. In this embodiment, the raceway seat body 2-1 is a flat and long plate structure, and a through hole 2-1d corresponding to the assembly hole on the crankcase is provided on its edge along the thickness direction. The through hole 2-1d is an ordinary through hole, and may also be a threaded hole.

A passage hole 2-4 is also provided on the raceway seat body 2-1 through its thickness direction and opened on the crankcase installation surface and the cylinder liner installation structure. The passage hole 2-4 is used to pass through the reciprocating The piston rod of the moving part is called the piston rod through the hole 2-4.

The guide rail base 2-2 is arranged on the same side as the crankcase mounting surface 2-1a on the raceway seat body. In this embodiment, the guide rail base 2-2 is a strip-shaped structure. The longitudinal direction of the runway seat body 2-1 is set. The center line of the guide rail base 2-2 is staggered by a predetermined distance e from the piston rod passing hole. The predetermined distance e is the distance between the reciprocating parts of the equipment with reciprocating parts perpendicular to each other using the above-mentioned crankcase.

On the top of the guide rail base 2-2 (that is, the side away from the raceway seat body 2-1), a guide rail 2-3 for guiding the reciprocating parts is also provided. In this embodiment, the guide rail 2-3 is integrally formed with the guide rail base 2-2. The guide rail 2-3 is in the shape of a long strip, and a guide surface 2-3a cooperating with the reciprocating moving part is provided on it. The guide surface 2-3a may be a concave arc surface, a convex arc surface, a V-shaped surface or a plane. In this embodiment, it is a plane.

Figure 2 and Figure 3 show the assembled structure of the above-mentioned crankcase and raceway seat. In this embodiment, three raceway seats are provided on the crankcase wall as an example for illustration.

Please refer to Fig. 2 and Fig. 3, the raceway seat 2a, the raceway seat 2b and the raceway seat 2c are respectively arranged on the left wall, the right wall and the outer side of the upper wall of the crankcase. The guide rail base 2d that does not contain the raceway seat body is arranged on the lower side of the crankcase, and a guide rail is provided thereon.

When the raceway seat is assembled with the crankcase wall, the guide rail base on the raceway seat is assembled into the inner cavity of the crankcase through the opening on the crankcase wall, and the crankcase mounting surface of the raceway seat and the corresponding crankcase The assembling surfaces of the raceway seat fit together, and at the same time, the through hole on the raceway seat body is aligned with the assembly hole on the crankcase wall, and the raceway seat and the crankcase are fastened as one by bolts.

Moreover, after assembly, the piston rods on the raceway seat 2a and the raceway seat 2b are aligned through the holes, and the guide rail guide surfaces on the guide rail bases of the raceway seat 2a and the raceway seat 2b are aligned, the guiding directions are parallel to each other, and the two guide The plane determined by the center line of the surface includes the center of the piston rod passing hole on the raceway seat 2c. The piston rod on the raceway seat 2a and the raceway seat 2b is perpendicular to the guide rail guide direction on the respective raceway seat through the hole center line. The guide rail guide surface on the track seat 2c is aligned with the guide rail guide surface on the guide rail base 2d. Both guide surfaces are perpendicular to the guide rail guide surface centerlines of the track seat 2a and the track seat 2b.

Also can be detachable structure between the guide rail on the track seat and described guide rail base, as shown in Figure 3, guide rail 3a, guide rail 3d and guide rail 3c are all independent parts, and its shape is as shown in Figure 6, The guide rail is elongated, and a guide surface is provided at its top, and what is shown in Fig. 6 is the situation of a V-shaped guide surface. If the guide rail is set as a separate independent component, it can be processed separately, and a material different from that of the guide rail base can be selected. Therefore, the material of the guide rail base and the guide rail can be selected according to needs, taking weight, cost and strength into consideration.

In addition, in order to improve the positioning accuracy when the track seat and the crankcase are assembled, positioning pin holes can also be respectively set at the corresponding positions of the track seat and the crankcase wall (such as the first positioning pin holes 1-5c and The second locating pin hole 2-1c) in Fig. 5 locates the two through the locating pin hole and the locating pin matched therewith. When assembled as a whole, the track seat and the positioning pin holes at the corresponding positions on the crankcase wall are aligned, and the positioning pins are inserted into the positioning pin holes.

In the combined body of the above-mentioned embodiment, except for the bearing hole, the crankcase does not have any machined surface inside, and the outer wall surface is not provided with the structure combined with the cylinder liner and other special-purpose structures, and what needs to be processed is only the ordinary plane (runway) seat mounting surface) and threaded holes and cutouts for mounting the raceway seat. The raceway seat of the composite body is installed on the crankcase by the raceway seat fitting surface and positioning on the crankcase wall. The guide rail arranged on the track seat can be formed integrally with the track, or can be processed separately and then assembled with the track seat as a whole. It can be seen that since the crankcase, raceway seat and guide rail can be processed separately, the geometric relationship of different parts is only positioned through the plane during installation, which is not only simple in processing, but also simple in assembly, which greatly reduces the difficulty and cost of manufacturing. Moreover, since the cylinder liner installation structure is also provided on the raceway seat (Fig. 1 shows the structure of the combined body assembly cylinder liner of the above-mentioned embodiment), so that the cylinder liner and the crankcase are no longer an integral structure, relatively Compared with the traditional integral structure of the cylinder liner and the crankcase, it greatly simplifies the processing technology of the crankcase of the body. Moreover, it also makes it possible to choose different materials for the cylinder liner and crankcase according to the needs, so that machines with different purposes such as internal combustion engines, vacuum pumps, compressors, mud pumps, etc. but all using non-linkage reciprocating mechanisms can share one platform, taking into account cost and Functional (especially strength) considerations. This greatly reduces the cost of manufacturing, using and maintaining the machine.

In the above-mentioned embodiment, three raceway seats are provided on the crankcase wall as an example for illustration, and each outer side of the three raceway seats can be equipped with a cylinder liner, which is called a T-type three-cylinder engine; One of the upper assembly cylinders can form a single-cylinder machine, and the two assembly cylinders can form an I-shaped twin-cylinder machine (two cylinders opposed horizontally) or a V-shaped twin-cylinder machine. Among the above models with at least two cylinders, if one of the cylinders constitutes the combustion chamber of the internal combustion engine, and if the other cylinder is the working chamber of the compressor, vacuum pump or mud pump, then it can be formed without an external power source. , vacuum pump or mud pump, which greatly expands the range of use of the machine, and does not have to rely on electric motors that rely on wires to provide power.

In addition, the above-mentioned combined body can be combined with any mechanism for mutual conversion between reciprocating and rotating motions without connecting rods to form the above-mentioned various modified bodies. It is a moving shaft-end shaft structure, which will not be repeated here.

Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection should be based on the scope defined by the claims of the present invention.

Claims (14)

1. a kind of combination body, is applied to the equipment using the mechanism that connection rod-free reciprocating is multiple and rotary motion is mutually changed, its feature It is to include：Crankcase, the dismantled and assembled runway seat being arranged on the crankcase and the guide rail being arranged in the runway seat；

The crankcase is the cavity for cavity enclosed by antetheca, rear wall, left wall, right wall and upper wall and internal；Institute State and be provided with the front and rear wall of crankcase for housing the through hole of crankshaft bearing, be referred to as forward spindle bearing bore and rear min bearing Hole；Runway seat fitting surface, referred to as soft strip seat fitting surface are provided with the outside of the upper wall；It is outer in the left wall and right wall Side is provided with runway seat fitting surface, referred to as side runway seat fitting surface；Also set up in the crankcase upper wall, left wall and right wall There is the perforate of connection crankcase internal cavities；

The guide rail base that the runway seat is included runway seat body and is wholely set with the runway seat body；Wherein, it is described On runway seat body, relative both sides are respectively provided with the crankcase mounting surface that is engaged with runway seat fitting surface and for installing cylinder The cylinder sleeve mounting structure of set；It is additionally provided with the runway seat body through its thickness direction and in the crankcase mounting surface With cylinder sleeve mounting structure opening by hole, referred to as piston rod passes through hole；The guide rail base be arranged on runway seat body with Crankcase mounting surface identical side, is provided with the top of guide rail base and provides the guide rail being oriented to reciprocating part；It is described to lead Base of the rail seat center line and the piston rod are staggered predetermined distance by hole center；

During assembling, the guide rail base in runway seat is entered in crankcase internal cavities by the perforate on crankcase wall, runway seat Crankcase mounting surface runway seat fitting surface corresponding with crankcase fits, and runway seat is assemblied in bent axle by fastening structure On case.

2. combination body according to claim 1, it is characterised in that：The soft strip seat fitting surface and the side runway seat Fitting surface is mutually perpendicular to, and parallel with the main bearing hole line of centres in front and back.

3. combination body according to claim 1, it is characterised in that：The guide rail is integrally formed with the guide rail base, Guide rail is set to coordinate the spigot surface being oriented to the reciprocating part of circular slider-crank mechanism away from guide rail base side.

4. combination body according to claim 1, it is characterised in that：The guide rail is elongated, be provided with thereon with Reciprocating part coordinates the spigot surface being oriented to；The guide rail is removable assembling structure with the guide rail base.

5. the combination body according to claim 3 or 4, it is characterised in that：The spigot surface be in concave arc surface, convex Face, V-arrangement face or plane.

6. combination body according to claim 1, it is characterised in that：Also include alignment pin；In the runway seat and bent axle Opposite position on tank wall is also respectively provided with the dowel hole being engaged with alignment pin；During assembling, runway seat and crankcase On wall, the dowel hole of relevant position is aligned, in alignment pin insertion dowel hole.

7. combination body according to claim 1, it is characterised in that：Also include lower guideway seat and be arranged at the lower guideway Lower guideway on seat, the lower guideway seat are arranged at bent axle lower box part relative with the guide rail base of the piston seat of crankcase upper wall Arrange, accordingly, lower guideway is aligned with the guide rail on the piston seat of crankcase upper wall.

8. combination body according to claim 1, it is characterised in that：Including cylinder sleeve；The wherein end face of the cylinder sleeve sets It is set to and is engaged with the cylinder sleeve mounting structure on the runway seat body；During assembling, the end face and the cylinder sleeve of cylinder sleeve install knot Structure fits, and cylinder sleeve center line is aligned by hole center with the piston rod, is bolted and is integrated.

9. the equipment of the mechanism that a kind of employing connection rod-free reciprocating is multiple and rotary motion is mutually changed, it is characterised in that using above-mentioned power Profit requires the combination body described in 1 to 8 any claim.

10. equipment according to claim 9, it is characterised in that：The equipment is internal combustion engine, compressor, vavuum pump or mud Stock pump.

11. equipment according to claim 9, it is characterised in that：The equipment be I shape twin-tub machines, V-arrangement twin-tub machine, T-shaped three Cylinder machine or single cylinder engine.

12. equipment according to claim 9, it is characterised in that：The equipment at least has two cylinders, and at least one Cylinder is combustion chambers of internal combustion engines, and at least one cylinder is compressor, vavuum pump or slush pump working chamber.

13. equipment according to claim 9, it is characterised in that：The connection rod-free reciprocating is multiple and rotary motion mutually changes Mechanism is circular slider-crank mechanism or moving axis-end axis mechanism.

A kind of 14. crankcases, are applied to the equipment using the mechanism that connection rod-free reciprocating is multiple and rotary motion is mutually changed, and its feature exists In：The crankcase is the cavity for cavity enclosed by antetheca, rear wall, left wall, right wall and upper wall and internal；Described It is provided with the front and rear wall of crankcase for housing the through hole of crankshaft bearing, is referred to as forward spindle bearing bore and rear min bearing hole； Runway seat fitting surface, referred to as soft strip seat fitting surface are provided with the outside of the upper wall；Outside in the left wall and right wall It is provided with runway seat fitting surface, referred to as side runway seat fitting surface；It is additionally provided with the crankcase upper wall, left wall and right wall The perforate of connection crankcase internal cavities.