CN218225423U - Cold pressing combination device for pump body and rotor of rotor compressor - Google Patents

Abstract

The utility model discloses a rotor compressor pump body and rotor combination device that colds presses, including rotor frock and the pressure equipment machine of colding pressing, the rotor frock of colding pressing includes the bottom plate, and the upper surface of bottom plate is equipped with the constant head tank, and the constant head tank middle part is equipped with the through-hole, is equipped with the fixed block in the constant head tank, and the fixed block is used for fixed rotor, and the upper surface of bottom plate encircles the constant head tank and is equipped with a plurality of locating components, and locating component is used for supporting the upper cylinder cover, and the locating pin top surface is equipped with the locating pin, and the last locating pin of a plurality of locating components is used for limiting the displacement of upper cylinder cover on the horizontal direction jointly, the utility model discloses at the in-process that the pump body combines with the rotor is colded pressing, avoid the bent axle to receive too big stress with the rotor impressed bent axle, utilize the rotor fixed block who matches with the rotor to support and restrict the pump body subassembly, by last briquetting and the common cooperation of lower briquetting, impress the rotor bent axle by lower briquetting.

Description

Cold pressing combination device for pump body and rotor of rotor compressor

Technical Field

The utility model relates to a frock technical field is made to the rotor compressor, concretely relates to the rotor compressor pump body and rotor combination device that colds pressing.

Background

The assembly of a pump body assembly and a rotor in the existing fully-sealed rolling rotor compressor is usually realized by a process of combining part interference fit and a hot sleeve, and a long shaft of a crankshaft in the pump body assembly is in interference fit with an inner hole of the rotor; the method comprises the following steps of adopting a high-frequency (medium-frequency) high-power supply, generating an alternating magnetic field in an induction coil, generating eddy current by a rotor, heating the rotor by the eddy current heat effect to enlarge the size of an inner hole of the rotor, inserting a crankshaft of a pump body assembly into the inner hole of the rotor by transplanting, assembling the size requirement by a positioning tool, preventing the magnetic steel of the variable-frequency rotor from being broken and aluminizing the fixed-frequency rotor by controlling the temperature through the process, cooling a pump body rotor set to the room temperature by air cooling, and completing a rotor thermal sleeve after the pump body rotor set is qualified; the method can realize the firm combination of the rotor and the pump body assembly, but has high process requirement, precise and complex equipment, large operation difficulty, large consumption of industrial pure water and electric energy, large amount of industrial oil smoke generated in the production process, huge noise generated by an air cooling and smoke discharging system, and the defects can be eliminated by adopting a new process, and can be effectively avoided by adopting a cold pressing process under the condition of approximate quality.

The existing pump body assembly and rotor cold pressing combination process is usually realized by adopting a press fitting machine, the rotor or the pump body assembly is accurately pressed to combine the rotor with the pump body assembly, the crankshaft is pressed into the rotor in the existing cold pressing process, the rotor adopting the cold pressing process is basically a small motor, the diameter of a rotating shaft is small, the crankshaft is easy to deform and bend, so that the rotor is large in jump, the quality of the motor is influenced, the cold pressing process needs to be changed, corresponding tools are designed for the rotor and the pump body assembly, and the phenomenon of stress concentration in the pressing process of the rotor into the crankshaft is reduced.

The existing rotor cold pressing tool often can be provided with a fabrication hole or other positioning structures on the pump body assembly, so that the pump body assembly is positioned in the press fitting process, and the structures specially arranged for positioning such as the fabrication hole can damage the original structural strength of the pump body assembly or bring unnecessary troubles when the pump body assembly is installed into a compressor.

Disclosure of Invention

The utility model aims at the problem that prior art exists, a rotor compressor pump body and rotor combination device that colds pressing is provided.

In order to achieve the above object, the utility model adopts the following technical scheme:

rotor compressor pump body and rotor combination device of colding pressing, including rotor frock of colding pressing and pressure equipment machine, the rotor frock of colding pressing includes the bottom plate, the upper surface of bottom plate is equipped with the constant head tank, the constant head tank middle part is equipped with the through-hole, be equipped with the fixed block in the constant head tank, the fixed block is used for fixed rotor, the upper surface of bottom plate encircles the constant head tank is equipped with a plurality of locating component, locating component is used for supporting the upper cylinder cap, the locating component top surface is equipped with the locating pin, and is a plurality of on the locating component the locating pin is used for restricting jointly the displacement of upper cylinder cap on the horizontal direction.

In the process of cold pressing and combining the pump body and the rotor, the rotor is pressed into the crankshaft to avoid overlarge stress borne by the crankshaft, the rotor is supported and limited by utilizing a rotor fixing block matched with the rotor, the pump body assembly is supported and limited by utilizing a positioning column, the upper pressing block and the lower pressing block are jointly matched, and the rotor is pressed into the crankshaft by the lower pressing block; the rotor fixing block and the positioning column can be replaced according to the size of the rotor and the size of the upper cylinder cover so as to match different rotors and the upper cylinder cover, and the positions of the rotor and the pump body assembly are not limited by a complex special fixture.

Preferably, the fixed block is a hollow cylinder, the positioning groove is provided with a plurality of positioning pins between the fixed block and the through hole, and the positioning pins are used for limiting the displacement of the rotor in the horizontal direction.

The displacement of the rotor in the horizontal direction is restricted by the positioning pin, but the positioning pin does not affect the displacement of the rotor in the vertical direction when the rotor is jacked up by the lower pressure block.

Preferably, the fixed block includes first hollow cylinder and second hollow cylinder, second hollow cylinder sets up in the first hollow cylinder, first hollow cylinder with the bottom surface parallel and level setting of second hollow cylinder, second hollow cylinder top surface also is equipped with a plurality ofly the locating pin, first hollow cylinder with the locating pin is used for the restriction jointly the displacement of rotor on the horizontal direction, second hollow cylinder is used for supporting the rotor.

Through half parcel of fixed block the rotor is in order to realize right the better support effect of rotor, first hollow cylinder with the second hollow cylinder is a whole, the locating pin with the locating hole of rotor bottom is mutually supported in order to restrict the displacement of rotor on the horizontal direction.

Preferably, the fixed block with be transition fit between the constant head tank, the rotor with also be transition fit between the fixed block, the diameter of through-hole is less than the diameter of rotor.

The transition fit means that when the hole is assembled with the shaft, a clearance fit and an interference fit are possible, a tolerance band of the hole and a tolerance band of the shaft are overlapped, the fixing block and the positioning groove as well as the rotor and the fixing block are in transition fit so as to facilitate the disassembly between the fixing block and the positioning groove, and the diameter of the through hole is limited to be smaller than that of the rotor, so that the diameter of the through hole is ensured to be smaller than the minimum inner diameter of the fixing block.

Preferably, the bottom plate is rectangular, handles are oppositely arranged on two sides of the bottom plate, a plurality of fixing holes are formed in the bottom plate, and the fixing holes are used for fixing the bottom plate through bolts.

Through the handle is convenient for take the rotor frock of colding pressing, the fixed orifices is convenient for fix the bottom plate.

Preferably, locating component includes a pair of locating lever and a pair of position pole of letting, the top surface of locating lever is equipped with the arc and encloses the fender, the arc enclose the surface that keeps off with the edge of locating lever is laminated mutually, the arc encloses the fender and is used for assisting the locating pin restriction the displacement of upper cylinder cap in the horizontal direction.

The arc encloses the fender do the structure that the locating lever was processed out, the arc enclose the fender with the locating lever is a whole, the arc enclose the fender with there are two contact points between the upper cylinder cap, it is a pair of the locating lever the arc encloses the fender and can follow two directions and fix the upper cylinder cap prevents the upper cylinder cap takes place to rotate.

Preferably, the press-fitting machine comprises an upper press block and a lower press block, the upper press block and the lower press block are used for limiting the displacement of the pump body assembly and the rotor in the vertical direction together, and the lower press block is used for pushing the rotor into the crankshaft.

The upper pressing block and the positioning column are fixed on the pump body assembly, and the lower pressing block penetrates through the through hole to push the rotor into a crankshaft in the pump body assembly, so that cold pressing combination of the crankshaft and the rotor is realized.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model discloses at the pump body and the in-process that the rotor cold-pressed the combination, it is too big to avoid the bent axle stress that receives with the rotor bent axle of impressing, utilizes the rotor fixed block who matches with the rotor to support and restrict the rotor, utilizes the reference column to support and restrict pump body subassembly, cooperates jointly with lower briquetting by last briquetting, impresses the bent axle with the rotor by lower briquetting.

(2) The utility model discloses well rotor fixed block and reference column can be changed in order to match different rotor and last cylinder cap according to the size of rotor and last cylinder cap, need not the position of complicated special fixture restriction rotor and pump body subassembly.

Drawings

FIG. 1 is a schematic view of the cold pressing combination of the pump body and the rotor of the rotor compressor of the present invention;

fig. 2 is a schematic structural view of the cold pressing tool for the middle rotor of the utility model;

fig. 3 is a schematic structural view of a fixing block according to embodiment 2 of the present invention;

fig. 4 is a schematic structural view of the middle bottom plate of the present invention;

FIG. 5 is a schematic structural view of the positioning rod of the present invention;

in the figure: 1. a base plate; 101. positioning a groove; 102. a through hole; 2. a fixed block; 201. a first hollow cylinder; 202. a second hollow cylinder; 203. notched bolt holes; 204. a positioning pin fixing hole; 3. positioning a rod; 301. a first cylinder; 302. a second cylinder; 303. a concession step; 304. an arc-shaped enclosure; 4. a position yielding rod; 5. an upper cylinder cover; 6. a rotor; 7. positioning pins; 8. pressing the blocks; 9. a lower muffler shell.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 5, the specific scheme of example 1 is as follows: rotor compressor pump body and rotor combination device of colding pressing, including rotor frock of colding pressing and pressure equipment machine, the rotor frock of colding pressing includes bottom plate 1, the upper surface of bottom plate 1 is equipped with constant head tank 101, constant head tank 101 middle part is equipped with through-hole 102, be equipped with fixed block 2 in the constant head tank 101, fixed block 2 is used for fixed rotor 6, the upper surface of bottom plate 1 is equipped with a plurality of locating component around constant head tank 101, locating component is used for supporting upper cylinder cap 5, the locating component top surface is equipped with locating pin 7, locating pin 7 on a plurality of locating component is used for limiting the displacement of upper cylinder cap 5 on the horizontal direction jointly.

Specifically, the bottom surface of the upper cylinder cover 5 is in contact with the top surfaces of a plurality of positioning assemblies, the positioning assemblies are used for supporting the upper cylinder cover 5, and the side walls of the upper cylinder cover 5 are in contact with the side surfaces of the positioning pins 7 on the top surfaces of the plurality of positioning assemblies.

Specifically, the fixing block 2 is a hollow cylinder, and the positioning groove 101 is provided with a plurality of positioning pins 7 between the fixing block 2 and the through holes 102, and the positioning pins 7 are used for limiting the displacement of the rotor 6 in the horizontal direction.

Specifically, the outer ring of fixed block 2 is equipped with breach bolt hole 203, and fixed block 2 passes through the bolt fastening in constant head tank 101, and breach bolt hole 203 sets up the position of keeping away from fixed block 2 center as far as possible, avoids breach bolt hole 203 to destroy the complete circular in middle part of fixed block 2, prevents to take place to interfere between the bolt that is used for installing fixed block 2 and rotor 6, leads to rotor 6 can't put into fixed block 2.

Specifically, the fixed block 2 is in transition fit with the positioning groove 101, the rotor 6 is also in transition fit with the fixed block 2, and the diameter of the through hole 102 is smaller than that of the rotor 6.

Specifically, the bottom plate 1 is rectangular, handles are arranged on two sides of the bottom plate 1 oppositely, and a plurality of fixing holes are formed in the bottom plate 1 and used for fixing the bottom plate 1 through bolts.

Specifically, locating component includes a pair of locating lever 3 and a pair of position pole 4 of letting, and the top surface of locating lever 3 is equipped with the arc and encloses fender 304, and the arc encloses the surface that keeps off 304 and the marginal facies laminating of locating lever 3, and the arc encloses fender 304 and is used for supplementary locating pin 7 to restrict the displacement of upper cylinder cover 5 in the horizontal direction.

Specifically, the 3 bodies of rod of locating lever comprises first cylinder 301 and second cylinder 302 that two diameters are different from each other from top to bottom, and the diameter of first cylinder 301 of 3 bodies of rod top of locating lever is greater than the diameter of its below second cylinder 302, and the height that constant head tank 101 was exposed to fixed block 2 not less than to the height of second cylinder 302, and the 4 bodies of rod of the pole of stepping down is the same cylinder of diameter from top to bottom, just second cylinder 302 diameter is greater than let 4 body of rod diameters of pole, because the restriction of 5 diameters of upper cylinder cover and 6 diameters of rotor, will utilize simultaneously the position post and 2 supports and restrict the position of upper cylinder cover 5 and rotor 6 with fixed block 2, need the size to be greater than rotor 6's fixed block 2, lead to the fixed block 2 probably to take place to interfere with the position post between, consequently need through two liang of relative locating lever 3 and let position pole 4 in order to avoid fixed block 2.

Specifically, the contact area between the top of the positioning rod 3 and the upper cylinder cover 5 is larger than the contact area between the top of the let position rod 4 and the upper cylinder cover 5, and the contact area between the top of the let position rod 4 and the upper cylinder cover 5 is smaller, so that the upper cylinder cover 5 is not favorable for supporting the upper cylinder cover 5, and the stress local concentration phenomenon occurs when the stress area of the upper cylinder cover 5 is too small, so that a larger contact area is required between the top of the positioning rod 3 and the upper cylinder cover 5 to improve the stress condition of the upper cylinder cover 5, and if the let position rod 4 with a larger top area is adopted, the interference between the let position rod 4 and the silencer shell 9 or other parts of the pump body assembly can occur.

Specifically, the top of the rod body of the positioning rod 3 faces the one side of the pump body assembly and is machined into the yielding step 303 through cutting, the diameter of the rod body of the positioning rod 3 is thick as the main supporting structure, interference is likely to occur between the top of the rod body of the positioning rod 3 and an upper silencer shell in the pump body assembly, and therefore the top of the rod body of the positioning rod 3 needs to be yielded out of the step in the direction away from the pump body assembly, and installation of the pump body assembly is facilitated.

Specifically, the press-fitting machine comprises an upper pressing block 8 and a lower pressing block, the upper pressing block 8 and the lower pressing block are used for limiting displacement of the pump body assembly and the rotor 6 in the vertical direction together, and the lower pressing block is used for pushing the rotor 6 into the crankshaft.

Specifically, the pump body assembly further comprises an upper silencer shell, a lower silencer shell 9, a lower cylinder cover, an air cylinder and a crankshaft, wherein the upper silencer shell, the lower silencer shell 9, the lower cylinder cover and the air cylinder share the same axis with the crankshaft, the upper cylinder cover 5 and the lower cylinder cover are respectively arranged on the upper side and the lower side of the air cylinder, the upper silencer shell is arranged on the outer side of the upper cylinder cover 5, the lower silencer shell 9 is arranged on the outer side of the lower cylinder cover, and the crankshaft penetrates through the upper silencer shell, the lower silencer shell 9, the lower cylinder cover and the air cylinder.

Specifically, the pump body subassembly is crankshaft, upper muffler shell, upper cylinder cover 5, cylinder, lower cylinder cover and lower muffler shell 9 respectively from top to bottom when installing in the compressor, and rotor 6 installs on the crankshaft top, at the in-process that the rotor compressor pump body and rotor 6 combined of colding pressing, need invert the pump body subassembly so that install rotor 6.

Specifically, the principle of cold pressing combination of the rotor compressor pump body and the rotor 6 is as follows:

(1) Preparing a rotor cold pressing tool, a press-mounting machine, a pump body assembly and a rotor 6, firstly placing a fixed block 2 into a positioning groove 101, then placing the rotor 6 into the fixed block 2, ensuring that a positioning hole at the bottom of the rotor 6 is aligned with a positioning pin 7, finally placing the pump body assembly into the rotor cold pressing tool, placing the rotor cold pressing tool into the press-mounting machine by using a handle, and fixing a bottom plate 1 in the press-mounting machine through a fixing hole;

(2) An upper pressing block 8 of the press-fitting machine moves downwards to be in contact with a lower silencer shell 9 of the pump body assembly, and then the upper pressing block 8 is gradually pressurized to the specified pressure for fixing the pump body assembly, so that the pump body assembly is fixed in a rotor cold pressing tool;

(3) The lower pressing block of the pressing machine moves upwards to penetrate through the through hole 102 to be in contact with the rotor 6, then the lower pressing block jacks up the rotor 6 to press the rotor 6 into the crankshaft of the pump body assembly, in the process, the bottom of the rotor 6 is gradually separated from the fixing block 2 and the positioning pin 7, the top of the rotor 6 gradually enters the crankshaft, and the lower pressing block stops after completely pressing the rotor 6 into the crankshaft and is downwards separated from the rotor 6.

(4) Go up briquetting 8 and upwards break away from lower muffler shell 9, contact bottom plate 1 is fixed, utilizes the handle to take out the rotor frock of colding pressing, takes out the pump body subassembly that the installation was accomplished at last, accomplishes the cold pressing bonding process of rotor compressor pump body and rotor 6.

Example 2: the present embodiment 2 differs from embodiment 1 in that:

specifically, the fixing block 2 includes a first hollow cylinder 201 and a second hollow cylinder 202, the second hollow cylinder 202 is disposed in the first hollow cylinder 201, bottom surfaces of the first hollow cylinder 201 and the second hollow cylinder 202 are arranged in parallel, a plurality of positioning pins 7 are also disposed on a top surface of the second hollow cylinder 202, the positioning pins 7 are fixed on the second hollow cylinder 202 through positioning pin fixing holes 204, the first hollow cylinder 201 and the positioning pins 7 are used for limiting displacement of the rotor 6 in the horizontal direction, the second hollow cylinder 202 is used for supporting the rotor 6, and an inner diameter of the second hollow cylinder 202 is greater than or equal to a diameter of the through hole 102.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. Rotor compressor pump body and rotor combination device of colding pressing, including rotor frock of colding pressing and pressure equipment machine, its characterized in that: the rotor frock of colding pressing includes the bottom plate, the upper surface of bottom plate is equipped with the constant head tank, the constant head tank middle part is equipped with the through-hole, be equipped with the fixed block in the constant head tank, the fixed block is used for fixed rotor, the upper surface of bottom plate encircles the constant head tank is equipped with a plurality of locating component, locating component is used for supporting the upper cylinder cap, the locating component top surface is equipped with the locating pin, and is a plurality of on the locating component the locating pin is used for restricting jointly go up the displacement of cylinder cap on the horizontal direction.

2. The rotor compressor pump body and rotor cold pressing combination device according to claim 1, characterized in that: the fixed block is a hollow cylinder, the constant head tank is in the fixed block with be equipped with a plurality of between the through-hole the locating pin, the locating pin is used for restricting the displacement of rotor on the horizontal direction.

3. The rotor compressor pump body and rotor cold pressing combination device according to claim 1, characterized in that: the fixed block includes first hollow cylinder and second hollow cylinder, the second hollow cylinder sets up in the first hollow cylinder, first hollow cylinder with the bottom surface parallel and level of second hollow cylinder sets up, second hollow cylinder top surface also is equipped with a plurality of the locating pin, first hollow cylinder with the locating pin is used for the restriction jointly the displacement of rotor on the horizontal direction, second hollow cylinder is used for supporting the rotor.

4. The rotor compressor pump body and rotor cold pressing combination device according to claim 1, characterized in that: the fixed block with be transition fit between the constant head tank, the rotor with also be transition fit between the fixed block, the diameter of through-hole is less than the diameter of rotor.

5. The rotor compressor pump body and rotor cold pressing combination device according to claim 1, characterized in that: the bottom plate is rectangular, handles are oppositely arranged on two sides of the bottom plate, a plurality of fixing holes are formed in the bottom plate, and the fixing holes are used for fixing the bottom plate through bolts.

6. The rotor compressor pump body and rotor cold pressing combination device according to claim 1, characterized in that: the positioning assembly comprises a pair of positioning rods and a pair of yielding rods, the top surfaces of the positioning rods are provided with arc-shaped enclosing blocks, the outer surfaces of the arc-shaped enclosing blocks are attached to the edges of the positioning rods, and the arc-shaped enclosing blocks are used for assisting the positioning pins to limit the displacement of the upper cylinder cover in the horizontal direction.

7. The rotor compressor pump body and rotor cold pressing combination device according to claim 1, characterized in that: the press-fitting machine comprises an upper press block and a lower press block, the upper press block and the lower press block are used for limiting displacement of the pump body assembly and the rotor in the vertical direction together, and the lower press block is used for pushing the rotor into the crankshaft.

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