CN210335143U

CN210335143U - Auxiliary tool for processing crankcase

Info

Publication number: CN210335143U
Application number: CN201920709997.6U
Authority: CN
Inventors: 任银涛; 李洪涛; 吴鸿博; 胡志强
Original assignee: Kaifeng Sepair Group Co ltd
Current assignee: Kaifeng Sepair Group Co ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-04-17
Anticipated expiration: 2029-05-17

Abstract

The utility model relates to an auxiliary tool for processing a crankcase, which comprises a fixed plate, a supporting rod and a fixed lantern ring for limiting the main shaft of a boring mill in the radial direction, wherein the fixed plate is symmetrically arranged at two sides of the fixed lantern ring, the central axis of the fixed lantern ring is parallel to the plane where the fixed plate is located, and two ends of the supporting rod are respectively fixedly connected with the fixed plate and the fixed lantern ring; this auxiliary tool adopts lubricating oil to lubricate the main shaft and the fixed lantern ring of boring machine at the practical in-process, when realizing that the main shaft and the fixed lantern ring of boring machine rotate relatively, fixed lantern ring carries out the axial direction to the main shaft of boring machine spacing to solve among the prior art at the shake of the main shaft of the "C" shape recess in-process of processing crankcase too big, seriously influence the problem of the machining precision of "C" shape recess.

Description

Auxiliary tool for processing crankcase

Technical Field

The utility model relates to a supplementary frock of crankcase processing.

Background

At present, two ways are available for obtaining hydraulic oxygen or hydraulic nitrogen; one is to exchange heat with liquid oxygen through a heat exchanger, the liquid oxygen is rapidly vaporized to form high-pressure oxygen, and the other is to compress the oxygen pressure to a specified pressure through an oxygen compressor. The oxygen compressor separates oxygen and nitrogen in the air by utilizing the difference of the liquefaction pressure of the oxygen and the nitrogen.

The oxygen compressor is an air compressor and mainly comprises a crankshaft, a crankcase, a piston and a cylinder; the motor drives a crankshaft which is rotatably assembled on the crankcase to rotate, so as to drive the piston to reciprocate in the cylinder, change the volume of the cylinder, compress air and compress and separate the air into liquid nitrogen and liquid oxygen; the machining precision of the crankshaft and the crankcase and the assembly precision between the crankshaft and the crankcase directly influence the reciprocating motion of the piston in the cylinder, thereby influencing the overall performance of the whole oxygen compressor.

The specific structure of the crankcase is shown in fig. 4, and comprises a crankcase body 11 and a C-shaped groove 12 for assembling a crankshaft. Due to the large size of the crankcase body 11, when the C-shaped groove 12 is bored, the main shaft of the boring machine needs to extend a long distance, so that the C-shaped groove 12 of the crankcase can be cut by the boring cutter mounted on the main shaft. In the boring process, the extension length of the main shaft is too long, and the shaking of the main shaft is too large, so that the cutting position of the boring cutter is changed, and the processing precision of the C-shaped groove 12 is seriously influenced; in order to reduce the overlarge shaking of the main shaft in the process of machining the C-shaped groove 12, an auxiliary tool for machining the crankcase is urgently needed to be developed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the machining precision of the C-shaped groove is seriously influenced by overlarge shaking of the main shaft in the process of machining the C-shaped groove of the crankcase, the utility model provides an auxiliary tool for machining the crankcase; in order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an auxiliary fixtures of crankcase processing, includes the fixed plate, the bracing piece with be used for the radial spacing fixed lantern ring of the main shaft of boring machine, the fixed plate symmetry sets up fixed lantern ring both sides, the central axis of the fixed lantern ring with the plane at fixed plate place is parallel, the both ends of bracing piece respectively with fixed plate and fixed lantern ring fixed connection.

The utility model discloses a beneficial effect of auxiliary fixtures of crankcase processing: the auxiliary tool is characterized in that a fixed lantern ring for limiting the spindle of the boring machine in the radial direction, a supporting rod for supporting the fixed lantern ring and a fixing plate for fixing the auxiliary tool are reasonably designed; the lubricating oil is adopted to lubricate the main shaft and the fixed sleeve ring of the boring machine in the using process, the main shaft and the fixed sleeve ring of the boring machine rotate relatively, and meanwhile, the fixed sleeve ring carries out radial limiting on the main shaft of the boring machine, so that the problem that the vibration of the main shaft is too large in the process of machining the C-shaped groove of the crankcase and the machining precision of the C-shaped groove is seriously influenced in the prior art is solved.

Preferably, a jacking bolt is radially arranged on the fixed lantern ring along the fixed lantern ring, and a jacking head matched with the circumferential side face of the main shaft is arranged at one end, close to the main shaft, of the jacking bolt.

Has the advantages that: the jacking bolt is arranged on the fixed lantern ring, and the jacking length of the jacking bolt is adjusted, so that the auxiliary tool is suitable for main shafts of boring machines with different thicknesses; the jacking bolt is provided with a jacking head matched with the circumferential side face of the main shaft, and the jacking head does not influence the relative rotation between the main shaft and the fixed sleeve ring while carrying out radial limit on the main shaft of the boring machine; when the C-shaped groove of the crankcase is bored, the radial limit is carried out on the main shaft of the boring machine by the top, so that the shaking amplitude of the main shaft is greatly reduced, and even the shaking of the main shaft is avoided; thereby improving the processing precision of the C-shaped groove.

Preferably, the number of the jacking bolts is 4, and the jacking bolts are uniformly arranged at intervals along the circumferential direction of the fixed lantern ring.

Has the advantages that: the jacking bolts are uniformly arranged at intervals, so that the main shaft of the boring machine is uniformly stressed, the rotation of the main shaft is facilitated, and the radial limitation of the main shaft by the fixed sleeve is facilitated.

Preferably, the number of the fixing plates symmetrically arranged on the two sides of the fixing lantern ring is 2, and the fixing plates are respectively a first fixing plate and a second fixing plate; the first fixing plate and the second fixing plate are on the same plane, and the length direction of the first fixing plate and the second fixing plate is parallel to the central axis of the fixing lantern ring.

Has the advantages that: the first fixing plate and the second fixing plate are arranged on the same plane, and the length direction of the first fixing plate and the central axis of the fixing lantern ring are parallel, so that the fixing of auxiliary tools on the upper end face of the crankcase is facilitated.

Preferably, the fixing plate is provided with a threaded through hole matched with the threaded hole in the upper end face of the crankcase, and the screw rod is inserted into the threaded through hole in the fixing plate and the threaded hole corresponding to the crankcase, so that the fixing plate is connected with the crankcase through a bolt.

Has the advantages that: the screw rod is inserted into the screw thread through hole of the fixed plate and the corresponding screw thread hole by arranging the screw thread through hole matched with the screw thread hole on the upper end surface of the crankcase on the fixed plate, so that the fixed plate is connected with the crankcase through a bolt; the fixed plate is connected with the crankcase through bolts, so that the fixed plate can be fixed and detached on the crankcase conveniently.

Preferably, both ends of the supporting rod are respectively welded with the fixed connection between the fixed plate and the fixed lantern ring, one end of the supporting rod is welded with the upper end face of the fixed plate, and the other end of the supporting rod is welded with the outer side face of the circumference of the fixed lantern ring.

Has the advantages that: the two ends of the supporting rod are respectively welded with the fixed plate and the fixed lantern ring, so that the supporting rod is firmly connected with the fixed plate and the fixed lantern ring; use the utility model discloses new frock adds man-hour to the "C" shape recess of crankcase, has guaranteed the axiality of the fixed lantern ring with the main shaft, improves the reliability and the stability of the work of frock.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the present novel crankcase machining auxiliary tool;

FIG. 2 is a state diagram of an embodiment of the present invention for an auxiliary tool for machining a new crankcase;

FIG. 3 is a schematic view of a top-in bolt structure of an embodiment of the auxiliary tool for machining the novel crankcase;

FIG. 4 is a schematic view of a crankcase of the prior art;

fig. 5 is a diagram showing a state of use of a jack bolt according to another embodiment of the auxiliary tool for machining a crankcase of the present invention.

Reference numbers in the figures: 1-crankcase, 11-box, 12-C-shaped groove, 2-main shaft, 3-fixed lantern ring, 31-jacking bolt, 311-screw rod, 312-top, 313-hexagon nut, 314-nut, 4-fixed plate, 41-thread through hole and 5-support rod.

Detailed Description

The novel features of the invention will be described in further detail below with reference to the accompanying drawings and detailed description:

the specific structure of the embodiment of the novel auxiliary tool for machining the crankcase is shown in fig. 1 and 3, the auxiliary tool comprises a fixing plate 4, a support rod 5 and a fixing sleeve ring 3 for radially limiting the main shaft 2 of the boring mill, the fixing plate 4 is designed to be installed above the crankcase and enable the axis of the fixing sleeve ring 3 to be collinear with the axis of the main shaft 2, so that the main shaft 2 smoothly passes through the fixing sleeve ring 3, the fixing plates 4 are symmetrically arranged on two sides of the fixing sleeve ring 3, the central axis of the fixing sleeve ring 3 is parallel to the plane where the fixing plate 4 is located, and two ends of the support rod 5 are respectively fixedly connected with the fixing plate 4 and the fixing sleeve ring 3; in this embodiment, the two ends of the supporting rod 5 are respectively welded to the fixing connection between the fixing plate 4 and the fixing collar 3, one end of the supporting rod 5 is welded to the upper end face of the fixing plate 4, the other end of the supporting rod is welded to the outer circumferential side face of the fixing collar 3, and the central axis of the fixing collar 3 is located below the plane where the fixing plate 4 is located. In other embodiments, ear plates may be disposed at two ends of the supporting rod 5, the fixing plate 4 and the fixing ring 3, and bolt holes are disposed on each ear plate, so as to connect two ends of the supporting rod 5 with the fixing plate 4 and the fixing ring 3 respectively.

In the embodiment, jacking bolts 31 are arranged on the fixed lantern ring 3 along the radial direction of the fixed lantern ring 3, the number of the jacking bolts 31 is 4, and the jacking bolts are uniformly arranged at intervals along the circumferential direction of the fixed lantern ring 3; in other embodiments, the number of the jacking bolts 31 is 3 or more than 5, and the jacking bolts are uniformly arranged at intervals along the circumferential direction of the fixed lantern ring 3; the main shaft 2 is uniformly stressed by uniform interval arrangement, thereby being beneficial to the rotation of the main shaft and the radial limit of the fixed sleeve ring to the main shaft. The jacking bolt 31 comprises a screw rod 311 which is inserted along the radial direction of the fixed lantern ring 3, a jacking head 312 which is matched with the circumferential side surface of the main shaft 2 is arranged at one end, close to the main shaft 2, of the screw rod 311, in the embodiment, an arc-shaped groove which is similar to the radian of the circumferential side surface of the main shaft 2 is formed in one end, far away from the screw rod 311, of the jacking head 312, and an oil storage groove for storing lubricating grease or lubricating oil is formed in the end; in the use process of the auxiliary tool, the oil storage tank continuously provides lubricating oil or lubricating grease for the relative rotation between the main shaft 2 and the fixed lantern ring, and the frequency of adding the lubricating oil or the lubricating grease due to the fact that the lubricating oil is insufficient during the shutdown is reduced, so that the reliability and the stability of the auxiliary tool in the practical example are improved. In other embodiments, the head 312 is an arc rib plate with the same radian as the circumferential side of the spindle 2, the arc rib plate is combined into a cylinder shape coaxial with the spindle 2, and a plurality of storage slots for storing a lubricating medium are arranged on the side surface of the arc rib plate close to the spindle 2, and the lubricating medium can be solid lubricating material or lubricating grease, preferably lubricating grease. One end of the arc-shaped rib plate is provided with a notch, and the other end of the arc-shaped rib plate is provided with a stop boss matched with the notch in a stop way; the gap and the stopping boss are arranged for preventing the lubricating medium from flowing out in the process of using the auxiliary tool in the embodiment; the arc-shaped rib plate forms a limiting sleeve sleeved on the circumferential side surface of the spindle 2 after the jacking bolt 31 jacks in, the specific structure is as shown in fig. 5, lubricating grease is added between the limiting sleeve and the circumferential side surface of the spindle 2, and the limiting sleeve does not influence the relative rotation between the spindle and the fixed sleeve ring while radially limiting the spindle 2 of the boring machine.

A hexagonal nut 313 fixedly connected with the screw rod 311 is arranged at the other end of the screw rod 311 away from the main shaft 2; the hexagonal nut 313 is arranged to facilitate the jacking and screwing-out of the screw rod 311; a nut 314 for preventing the wire from slipping between the fixed collar 3 and the lead screw 311 is provided at a position where the lead screw 311 is close to the outside of the fixed collar 3. By adjusting the jacking bolt 31; the top head 312 can limit the spindle 2 of the boring machine in the radial direction, and meanwhile, the relative rotation between the spindle and the fixed sleeve ring is not influenced.

In this embodiment, the number of the fixing plates 4 symmetrically arranged on both sides of the fixing collar 3 is 2, which are respectively a first fixing plate 4 and a second fixing plate 4; the first fixing plate 4 and the second fixing plate 4 are on the same plane, and the length direction of the two fixing plates 4 is parallel to the central axis of the fixing lantern ring 3. Threaded through holes 41 with the same shape and number as threaded holes in the upper end face of the box body 11 of the crankcase 1 are respectively formed in the first fixing plate 4 and the second fixing plate 4, and a lead screw is screwed into the threaded through holes 41 in the fixing plates 4 and the threaded holes in the corresponding box body 11, so that the fixing plates 4 are connected with the crankcase 1 through bolts.

The use process comprises the following steps: specifically, as shown in fig. 2, when the boring mill needs to process the C-shaped groove 12 of the crankcase 1, the auxiliary tool is adjusted to the front of the main shaft 2 of the boring mill by using a travelling crane, under the action of manual assistance, the shaft sleeve 22 of the main shaft 2 is inserted into the fixed lantern ring 3 of the auxiliary tool, the posture of the auxiliary tool is adjusted, the lower end surface of the fixed plate 4 is tightly attached to the upper end surface of the crankcase 11 of the crankcase 1, and meanwhile, the threaded through hole 41 of the fixed plate 4 is aligned with the threaded hole on the upper end surface of the crankcase 11; the screw rod is screwed into the threaded through hole 41 of the fixing plate 4 and the threaded hole of the corresponding box body 11, so that the auxiliary tool and the crankcase 1 are connected into a whole. The jacking bolt 31 on the fixed lantern ring 3 is rotated, so that the jacking head 312 of the jacking bolt 31 can limit the spindle 2 of the boring machine in the radial direction, and meanwhile, the relative rotation between the spindle 2 and the fixed lantern ring 3 is not influenced. In the using process, lubricating grease is adopted to lubricate the space between the main shaft 2 and the fixed lantern ring 3 of the boring machine, and the grease storage tank is filled with the lubricating grease; when the main shaft 2 and the fixed lantern ring 3 of the boring machine rotate relatively, the fixed lantern ring 3 radially limits the main shaft 2 of the boring machine, and therefore the problem that in the prior art, the vibration of the main shaft is too large in the process of machining the C-shaped groove of the crankcase, and the machining precision of the C-shaped groove is seriously affected is solved.

In the present application, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present novel forms can be understood as a case-by-case basis to those of ordinary skill in the art.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. The utility model provides an auxiliary fixtures of crankcase processing, its characterized in that, includes the fixed plate, the bracing piece with be used for the radial spacing fixed lantern ring of main shaft for the boring machine, the fixed plate symmetry sets up fixed lantern ring both sides, the central axis of the fixed lantern ring with the plane at fixed plate place is parallel, the both ends of bracing piece respectively with fixed plate and fixed lantern ring fixed connection.

2. The auxiliary tool for machining the crankcase according to claim 1, wherein a jacking bolt is arranged on the fixed lantern ring along the radial direction of the fixed lantern ring, and a jacking head matched with the circumferential side face of the main shaft is arranged at one end, close to the main shaft, of the jacking bolt.

3. The auxiliary tool for machining the crankcase according to claim 2, wherein the number of the jacking bolts is 4, and the jacking bolts are uniformly arranged at intervals in the circumferential direction of the fixed lantern ring.

4. The auxiliary tool for machining the crankcase according to claim 1, 2 or 3, wherein the number of the fixing plates symmetrically arranged on two sides of the fixing lantern ring is 2, namely a first fixing plate and a second fixing plate; the first fixing plate and the second fixing plate are on the same plane, and the length direction of the first fixing plate and the second fixing plate is parallel to the central axis of the fixing lantern ring.

5. The auxiliary tool for machining the crankcase according to claim 4, wherein the fixing plate is provided with a threaded through hole matched with the threaded hole in the upper end face of the crankcase, and the screw rod is inserted into the threaded through hole of the fixing plate and the threaded hole corresponding to the crankcase to realize the bolt connection between the fixing plate and the crankcase.

6. The auxiliary tool for machining the crankcase according to claim 1, wherein two ends of the supporting rod are respectively welded with the fixed connection between the fixed plate and the fixed lantern ring, one end of the supporting rod is welded with the upper end face of the fixed plate, and the other end of the supporting rod is welded with the outer side face of the circumference of the fixed lantern ring.