CN213498941U

CN213498941U - Dismounting tool of shaft sleeve

Info

Publication number: CN213498941U
Application number: CN202021638086.8U
Authority: CN
Inventors: 赵振刚; 刘文广; 王海涛; 林木; 冯湘君; 赵振明; 刘玮; 陈建林; 相梅; 夏召林
Original assignee: China Petroleum and Chemical Corp; Sinopec Shengli Oilfield Co Oil and Gas Gathering and Transportation
Current assignee: China Petroleum and Chemical Corp; Sinopec Shengli Oilfield Co Oil and Gas Gathering and Transportation
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-06-22
Anticipated expiration: 2030-08-07

Abstract

The utility model discloses a shaft sleeve dismounting tool, which comprises a fixed clamp which can be clamped and fixed on a pump shaft and a pulling clamp which can be clamped and fixed on a shaft sleeve; the fixed hoop comprises a fixed hoop lantern ring and a radial telescopic jacking mechanism arranged on the fixed hoop lantern ring; the tension hoop comprises a tension hoop lantern ring, a radial telescopic jacking mechanism arranged on the tension hoop lantern ring, and an axial telescopic jacking and releasing mechanism arranged on the tension hoop lantern ring; the radial telescopic jacking mechanism arranged on the fixed hoop lantern ring and the radial telescopic jacking mechanism arranged on the tension hoop lantern ring are of the same structure. The utility model provides a problem that the axle sleeve is difficult to dismantle. The pump consists of two independent annular hoops, and jackscrews for fixing are arranged on the hoops and are respectively used for positioning the shaft sleeve and the pump shaft. In the use process, the two sets of hoops are mutually acted or matched with the puller for use, the shaft sleeve can be easily disassembled, and the device can also be used for disassembling parts such as a bearing and the like, and is time-saving and labor-saving.

Description

Dismounting tool of shaft sleeve

Technical Field

The utility model belongs to the technical field of the axle sleeve extracting tool technique and specifically relates to an extracting tool of axle sleeve.

Background

The shaft sleeve is the tube-shape machine part of cover on the pump shaft, and axle and shaft sleeve common motion when rotating, and according to the pump model difference, the connected mode is also diversified, and is comparatively common the keyway connection. Typically, a clearance fit is used with the shaft. The shaft sleeve is an important accessory in a pump, can play a role in protecting a shaft, is an indispensable part in a sealing system, and basically consists of the shaft sleeve and an O-shaped ring embedded in a groove of an inner hole.

The shaft sleeve is worn after being used for a period of time, and needs to be replaced. Because the step clearance between axle sleeve and the axle is very little, be difficult to with the instrument dismantlement, the common method uses the bar copper to strike, or adopts to toast to take out after the heating, often adopts the mode of violence to dismantle.

The prior art has the following defects: the sleeve is a clearance fit with the shaft, but this does not mean that the sleeve is easier to assemble and disassemble, especially that it is more cumbersome to disassemble the sleeve. When the machine pump runs for a long time, impurities in a medium can block gaps, particularly coking can be generated on two end faces of the shaft sleeve, the shaft sleeve can be rusted due to the medium being water and is bonded with the shaft, and the shaft sleeve is difficult to disassemble; moreover, the temperature of the shaft sleeve is generally increased in the continuous operation process of the pump, and the O-shaped ring in the shaft sleeve is aged, loses elasticity and gradually carbonizes, so that the shaft and the shaft sleeve are adhered together, and the shaft sleeve is difficult to disassemble in the disassembling process. Because the shaft sleeve has a smooth appearance and no steps, the hydraulic puller cannot play a role, the hydraulic puller is usually demolished destructively in the process of demolishing, tools such as a cutting machine and a gas cutting tool are sometimes needed, and therefore the shaft sleeve can be damaged and a certain damage can be caused to a shaft.

Through searching, the keywords "shaft sleeve" and "detaching tool" are searched, and the item of patent document 3, namely (1) a bidirectional telescopic detaching device for a shaft body and a shaft sleeve with the patent number of CN202010183903.3 (2) a detaching device for a bearing or a shaft sleeve with the patent number of CN201920357468.4, is searched out; (3) CN202010178426.1 patent "an air pressure type shaft and shaft sleeve removing device".

CN202010183903.3 is a bidirectional telescopic dismounting device for shaft body and shaft sleeve, comprising a main body shell. Utilize air pressure and lever technique, can pour into the external air into, form highly-compressed air, make and form reaction force between axis body and the axle sleeve, the efficiency of dismantlement has been improved, and simultaneously, because dismantle for the contact formula, so the damage that causes is little, and, the device has the biggest atmospheric pressure control mechanism of elasticity contact formula, can the inside biggest atmospheric pressure of control unit, prevent that atmospheric pressure value is too big and the emergence of the inside part damage phenomenon that causes, furthermore, the device has the portable gas drive mechanism of space seal, can be under gaseous effect, realize the drive action, change kinetic energy, in addition, the device has bolt installation formula axis body joint conflict moving mechanism, can the joint on the axis body surface, conflict the axle sleeve on the axis body, thereby realize the drive action to the axle sleeve.

CN201920357468.4 discloses a dismounting device of bearing or axle sleeve to solve the problem that exists in the bearing or axle sleeve dismantlement of prior art, the device includes two bolt ejector pins, be equipped with the roof on the bolt ejector pin, the bottom of bolt ejector pin and the end face contact of bearing frame, the bottom surface of roof is fixed to be equipped with first disassembling rod, the second disassembling rod that is parallel to each other, be equipped with disassembling rod expansion adjusting device and disassembling rod shrink adjusting device on first disassembling rod and the second disassembling rod, the lower extreme of first disassembling rod and the lower extreme of second disassembling rod all are equipped with the couple board. The utility model discloses can realize the normal dismantlement of bearing or axle sleeve, owing to do not pry, strike etc. destructive operation, consequently can not cause the damage to equipment body to can avoid the inconvenient influence of dismantlement that equipment space, appearance restriction caused, simple structure, easy operation can effectively improve equipment maintenance efficiency.

CN202010178426.1 is an air pressure type shaft body and shaft sleeve removing device, which comprises a main hollow shell. The invention uses air as a medium, and then realizes manual air compression in a small belt large mode by a lever principle, and then dismantles the bearing and the shaft body by the impact force of high-pressure air, because the air is used as the medium, and manpower is used as a power driving source, the device has the inexhaustible characteristic, can not be influenced by the medium and the power condition, and is more precautionary in use places.

Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, perhaps technical field or application scenario are different, are directed to the utility model discloses more technical problem and the beneficial effect that will solve, above open technical document all do not have the technological inspiration.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a extracting tool of axle sleeve to the above-mentioned defect that prior art exists, solve the problem that the axle sleeve is difficult to the dismantlement. The pump consists of two independent annular hoops, and jackscrews for fixing are arranged on the hoops and are respectively used for positioning the shaft sleeve and the pump shaft. In the use process, the two sets of hoops are mutually acted or matched with the puller for use, the shaft sleeve can be easily disassembled, and the device can also be used for disassembling parts such as a bearing and the like, and is time-saving and labor-saving.

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

a shaft sleeve dismounting tool comprises a fixing clamp which can be clamped on a pump shaft and a tension clamp which can be clamped on a shaft sleeve;

the fixed hoop comprises a fixed hoop lantern ring and a radial telescopic jacking mechanism arranged on the fixed hoop lantern ring;

the tension hoop comprises a tension hoop lantern ring, a radial telescopic jacking mechanism arranged on the tension hoop lantern ring, and an axial telescopic jacking and releasing mechanism arranged on the tension hoop lantern ring;

the radial telescopic jacking mechanism arranged on the fixed hoop lantern ring and the radial telescopic jacking mechanism arranged on the tension hoop lantern ring are of the same structure.

Further, install the radial flexible tight mechanism in top on the fixed clamp lantern ring and evenly arrange 3 at least, install the radial flexible tight mechanism in top on the pulling force clamp lantern ring and evenly arrange 3 at least, install the flexible mechanism in top of axial on the pulling force clamp lantern ring and evenly arrange 3 at least.

Furthermore, the radial telescopic jacking mechanism arranged on the fixed hoop lantern ring comprises a positioning block, a connecting shaft, a radial thread sleeve and a radial jackscrew;

the positioning block is positioned on the inner side of the fixed hoop sleeve ring, and an accommodating groove for accommodating the positioning block is formed in the inner annular surface of the fixed hoop sleeve ring;

the connecting shaft is arranged in a radial unthreaded hole formed in the fixed hoop lantern ring, the maximum diameter of the connecting shaft is smaller than the inner diameter of the radial unthreaded hole, and the inner end of the connecting shaft is fixedly connected with the positioning block;

the radial thread insert is fixed on the outer ring surface of the fixed hoop lantern ring, and the axis of the radial thread insert is coincident with the axis of the radial unthreaded hole;

the radial jackscrew is assembled in a radial screw hole in the radial screw sleeve, and the inner end of the radial jackscrew props against the outer end face of the connecting shaft.

Furthermore, the radial telescopic jacking mechanism arranged on the fixed hoop lantern ring also comprises a spring;

the spring suit is outside at the connecting axle, and the terminal surface under the axle cap that the connecting axle upper end set up is withstood to the spring upper end, and the spring lower extreme withstands on the spacing lower ring platform of the spring that radial unthreaded hole inner wall set up.

Furthermore, the radial telescopic jacking mechanism arranged on the pull hoop lantern ring comprises a positioning block, a connecting shaft, a radial thread sleeve and a radial jackscrew;

the positioning block is positioned on the inner side of the tension clamp sleeve ring, and an accommodating groove for accommodating the positioning block is formed in the inner annular surface of the tension clamp sleeve ring;

the connecting shaft is arranged in a radial unthreaded hole formed in the pull clamp lantern ring, the maximum diameter of the connecting shaft is smaller than the inner diameter of the radial unthreaded hole, and the inner end of the connecting shaft is fixedly connected with the positioning block;

the radial thread insert is fixed on the outer ring surface of the pull hoop lantern ring, and the axis of the radial thread insert is coincident with the axis of the radial unthreaded hole;

Furthermore, the radial telescopic jacking mechanism arranged on the pull hoop lantern ring also comprises a spring;

Further, the axial telescopic jacking and releasing mechanism arranged on the tension hoop lantern ring comprises an axial jackscrew;

the axial jackscrew is assembled in the axial screw hole of seting up on the pulling force clamp lantern ring, and the axial screw hole is the through-hole.

Compared with the prior art, the utility model following beneficial effect has:

1) protection shaft sleeve, pump shaft: the mode of fixing the clamp interaction is adopted in the disassembly, the disassembly modes of damaging the shaft sleeve and the pump shaft, such as knocking, cutting by a cutting machine, gas cutting and the like, can be effectively avoided, and the pump shaft is protected from being damaged.

2) Safe and reliable: the maintenance site can be implemented, and the method is more suitable for some explosion-proof places. The method can avoid modes such as knocking, baking and the like, and is particularly suitable for oil and gas places.

3) And time and labor are saved: compared with the traditional dismounting mode, the dismounting tool has the advantages that the dismounting time is greatly shortened, and the labor is effectively saved. The traditional disassembling method needs two or three persons cooperating with one working day, and the method only needs about 1 hour from one person to two persons.

Drawings

Fig. 1 is a schematic view of a tension clamp structure of a shaft sleeve dismounting tool of the present invention;

fig. 2 is a schematic view of a fixing clamp structure of a shaft sleeve dismounting tool of the present invention;

fig. 3 is a sectional view of the radial expansion jacking mechanism.

In the figure: 1. radially jacking a screw; 2. a connecting shaft; 3. a spring; 4. a tension clamp collar; 5. a radial thread insert; 6. positioning blocks; 7. axially jacking a screw; 8. an axial screw hole; the spring limits the lower ring table 9.

Detailed Description

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

Example 1:

referring to fig. 1 to 3, the present invention provides a technical solution:

Furthermore, the radial telescopic jacking mechanism arranged on the fixed hoop lantern ring comprises a positioning block, a connecting shaft, a radial thread sleeve and a radial jackscrew; figure 2 does not show part numbers because the tension clamp has a more axially telescoping ejection mechanism than the anchor clamp, and the rest of the structure is the same, so the unnumbered structure of figure 2 will be clear to those skilled in the art.

Further, the radial telescopic jacking mechanism arranged on the pull hoop lantern ring comprises a positioning block 6, a connecting shaft 2, a radial thread sleeve 5 and a radial jackscrew 1;

the positioning block is positioned on the inner side of the pull clamp sleeve ring, and an accommodating groove for accommodating the positioning block is formed in the ring surface of the inner side of the pull clamp sleeve ring 4;

Further, the radial telescopic jacking mechanism arranged on the pull hoop lantern ring further comprises a spring 3;

the spring suit is outside at the connecting axle, and the terminal surface under the axle cap that the connecting axle upper end set up is withstood to the spring upper end, and the spring lower extreme withstands on the spacing lower ring platform 9 of spring that radial unthreaded hole inner wall set up.

Further, the axial telescopic jacking and releasing mechanism arranged on the tension hoop lantern ring comprises an axial jackscrew 7;

the axial jackscrew is assembled in the axial screw hole 8 of seting up on the pulling force clamp lantern ring, and the axial screw hole is the through-hole.

1) The composition of the device and the function of each part:

(1) the device consists of two sets of independent hoops, including a fixed hoop and a tension hoop. The fixed clamp is used for being fixed on the pump shaft to play roles in positioning and stress; the pulling force clamp is fixed on the shaft sleeve and acts on the fixed clamp under the action of the jackscrew, so that the effect of pulling the shaft sleeve outwards is achieved.

(2) The fixing clamp comprises a fixing ring and three sets of fixing devices which are uniformly distributed and comprise positioning blocks, connecting shafts, springs, radial jackscrews and the like. When the positioning device is used, the fixing ring is arranged at the pump shaft to be positioned, and when the jackscrew is forced, the positioning block is tightly attached to the pump shaft under the action of the connecting shaft and the spring to play a role in fixing. The tension clamp comprises a fixing ring; three sets of fixing devices which are uniformly distributed and composed of positioning blocks, connecting shafts, springs, radial jackscrews and the like; three sets of evenly distributed axial jackscrews. When the clamping device is used, the tension clamp is arranged at the outer side shaft sleeve of the fixing clamp, the radial jackscrew is tightened, and the positioning block is tightly attached to the pump shaft under the action of the connecting shaft and the spring to play a role in fixing.

2) The use method comprises the following steps: according to the specific situation of disassembly, a tool such as a fixed clamp or a puller can be selected for matched disassembly. For pump shafts which are long and cannot be used by a puller, a fixed clamp is adopted for assisting or a pump body is adopted as a stress point.

(1) Using a fixed clamp for cooperation: when the positioning block is used, the fixing clamp is placed on the pump shaft, the radial jackscrew is screwed, the radial jackscrew downwards compresses the connecting shaft, and the connecting shaft pushes the positioning block to be fixed on the pump shaft; the pull clamp is placed in the outer side shaft sleeve proper position of the fixed clamp, the radial jackscrew is screwed to fix the positioning block on the shaft sleeve, the stress point is acted on the fixed clamp by the three axial jackscrews which are uniformly screwed in, an outward force is given to the pull clamp, the pull clamp transmits the force to the shaft sleeve, and the shaft sleeve can be detached under the action of the pull clamp along with the screwing in of the three axial jackscrews. After the radial jackscrew is used, the radial jackscrew is loosened, and the positioning block is recovered under the action of the spring.

(2) Using a hydraulic puller for matching: placing the tension clamp at a proper position of an outer shaft sleeve of the fixed clamp, and screwing three radial jackscrews to fix the positioning block on the shaft sleeve; the three claws of the puller are positioned on the excircle of the tension hoop, the puller jackscrew is jacked at the axial midpoint of the shaft, when the jackscrew is screwed, an outward force is applied to the tension hoop, and the shaft sleeve can be detached along with the screwing-in of the jackscrew.

(3) The pump body is used for matching: the pull clamp is placed in the position where the shaft sleeve on the outer side of the fixed clamp is suitable, the radial jackscrew is screwed to enable the positioning block to be fixed on the shaft sleeve, the stress point is acted on the pump body by the three axial jackscrews which are uniformly screwed in, an outward force is given to the pull clamp, the pull clamp transmits the force to the shaft sleeve, and the shaft sleeve can be detached under the action of the pull clamp along with the screwing in of the jackscrew.

Example 2:

referring to fig. 1 to 3, the present invention provides a technical solution:

Example 3:

referring to fig. 1 to 3, the present invention provides a technical solution:

Although fig. 1 and 3 are used in all the above embodiments, it is obvious to those skilled in the art that separate drawings are not shown as long as the parts or structural features missing from the embodiments are removed from the drawings. As will be clear to the skilled person. Of course, the embodiments with more components are only the preferred embodiments, and the embodiments with fewer components are the basic embodiments, but the basic utility model objects can also be achieved, so all these are within the protection scope of the present invention.

All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", 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 unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

1. A shaft sleeve dismounting tool is characterized by comprising a fixing clamp which can be clamped on a pump shaft and a pulling clamp which can be clamped on a shaft sleeve;

2. The tool for disassembling the shaft sleeve as claimed in claim 1, wherein the number of the radial expansion tightening mechanisms mounted on the fixed hoop ring is at least 3, the number of the radial expansion tightening mechanisms mounted on the pulling hoop ring is at least 3, and the number of the axial expansion loosening mechanisms mounted on the pulling hoop ring is at least 3.

3. The shaft sleeve dismounting tool according to claim 1 or 2, wherein the radial telescopic jacking mechanism mounted on the fixed hoop lantern ring comprises a positioning block, a connecting shaft, a radial threaded sleeve and a radial jackscrew;

4. A sleeve remover according to claim 3, wherein said radially extending and retracting mechanism mounted to said fixed band collar further comprises a spring;

5. The shaft sleeve dismounting tool according to claim 1 or 2, wherein the radial telescopic jacking mechanism mounted on the tension hoop lantern ring comprises a positioning block, a connecting shaft, a radial threaded sleeve and a radial jackscrew;

6. A sleeve remover according to claim 5, wherein said radially extending and retracting mechanism mounted on said pull clip collar further comprises a spring;

7. A sleeve remover according to claim 1, 2 or 6, wherein said axial retraction jack-out mechanism mounted on said tension band collar comprises an axial jack-screw;