Bushing dismounting device

Abstract

The utility model relates to be used for connecting or disassembling the article of relying on pressure cooperation especially, and relates to bush dismounting device. Bush dismounting device includes bearing shaft, and bearing shaft includes thread section and with the equal inside diameter of bush and inserts into bush's guide axle section, and thread section installs force nut on, and guide axle section is equipped with pressure convex ring, and bush dismounting device still includes dismounting positioning sleeve and dismounting push sleeve, and the inside diameter of dismounting positioning sleeve is greater than the outside diameter of bush, and is used for supporting between pressure convex ring and bush mounting hole's hole along, and dismounting push sleeve is used for supporting between bush and force nut, and dismounting push sleeve has the ejection section, and the inside diameter and outside diameter of ejection section are equal with bush, and the length of ejection section is not less than the length of bush. With the support guide of guide axle section from inside to bush, will not cause the deformation of bush, has guaranteed that bush will not be damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to be used for connecting or disassembling the article of relying on pressure cooperation, especially relates to bushing dismounting device. BACKGROUND

[0002] At present, gas insulated metal enclosed switchgear has become one of the important components of substation because of its small floor area, compact structure and reliable operation. The transmission components are needed to act when the GIS switch is needed. In order to reduce the wear and tear of foreign matter, the transmission components are largely used to enhance the wear resistance of the bushing. At present, the bushing and the bushing mounting hole of the mounting parts are assembled by interference fit, and the bushing is disassembled by relying on the press. The bushing and the mounting parts need to be transported to the press and matched with the leveling tool. The operation process is complicated. Under some working conditions, the bushing and the mounting parts cannot be disassembled and installed by using the press, which greatly inconveniences the dismounting of the bushing.

[0003] The Chinese utility model patent with the authorization announcement number CN209125725U discloses a kind of bushing dismounting and installing tool, including long screw rod, two nuts and two sleeve, one nut is welded and fixed at one end of long screw rod, another nut is threadedly assembled at the other end of long screw rod, when using, by keeping screw rod fixed, screwing the nut at its one end, bushing is pushed into bushing mounting hole or bushing is ejected from bushing mounting hole by screwing in.But this tool is disassembled when the thickness of the bushing is smaller, since the bushing is subjected to greater pressure, it is easy to deform, so not only can't be quickly disassembled, but also causes parts damage. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of bushing dismounting devices, to solve the problem that the bushing dismounting device of existing application is applied to thin-walled bushing and is prone to cause bushing deformation, cannot be disassembled.

[0005] The utility model discloses a kind of bushing dismounting devices, to solve the problem that the bushing dismounting device of existing application is applied to thin-walled bushing and is prone to cause bushing deformation, cannot be disassembled.

[0006] Further, the end of the ejecting section has an inverted edge for pressure cooperation with the end surface of the force nut.

[0007] Further, the dismounting positioning sleeve comprises a sleeve body and an inner convex ring arranged inside the sleeve body, an end surface of the inner convex ring is in abutting contact with the pressure bearing convex ring, and the sleeve body has a coaxial positioning section sleeved outside the pressure bearing convex ring.

[0008] Further, an inner diameter of the inner convex ring is greater than an outer diameter of the bushing.

[0009] Further, a length of the guide shaft section is not less than twice a length of the bushing.

[0010] Further, the dismounting device further comprises a mounting pushing sleeve and a nut stop ring, the mounting pushing sleeve is used for being sleeved outside the guide shaft section and being clamped between the bushing and the pressure bearing convex ring, and the nut stop ring is used for being clamped between the force applying nut and the hole along of the bushing mounting hole.

[0011] Further, an inner diameter of the mounting pushing sleeve is equal to an outer diameter of the guide shaft section.

[0012] Further, an outer diameter of the mounting pushing sleeve is greater than an outer diameter of the bushing.

[0013] Further, an end of the force bearing shaft away from the threaded section is provided with a rotation stopping structure.

[0014] Further, the rotation stopping structure is a rotation stopping hexagonal head.

[0015] The utility model provides a kind of brand-new bushing dismounting device, force bearing shaft includes threaded section and the guide shaft section being equal to the inner diameter of bushing and being inserted into bushing, threaded section is equipped with force applying nut, and guide shaft section is equipped with pressure bearing convex ring, dismounting positioning sleeve is clamped between pressure bearing convex ring and the hole along of bushing mounting hole, dismounting pushing sleeve is clamped between force applying nut and bushing, fixed force bearing shaft and screw force applying nut, can push dismounting pushing sleeve by force applying nut in turn and push bushing, can be pushed out from bushing mounting hole and into dismounting positioning sleeve by bushing, since the guide shaft section is equal to the inner diameter of bushing and length is not less than the length of bushing, when pushing dismounting bushing, bushing can be supported and guided from inside by guide shaft section, is not deformed, guarantee that bushing is not damaged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic view of one embodiment of the bushing dismounting device of the utility model when dismounting bushing;

[0017] Figure 2The structure schematic view of the embodiment of the bushing dismounting device of the utility model is shown when installing the bushing.

[0018] In the figure: 10, guide shaft section; 11, threaded section; 12, pressure convex ring; 13, rotation-stopping hexagonal head; 2, force nut; 3, dismounting positioning sleeve; 30, coaxial positioning section; 31, inner convex ring; 4, dismounting pushing sleeve; 40, inner turning edge; 6, installation pushing sleeve; 7, nut stop ring; 8, bushing; 9, bushing installation hole. DETAILED DESCRIPTION

[0019] The features and performances of the utility model are further described in detail in combination with embodiments.

[0020] The utility model discloses a guide shaft section equal to the inner diameter of the bushing and inserted into the bushing is arranged on the bearing shaft, can first insert the guide shaft section into the bushing when dismounting or installing the bushing, support the bushing from the inside through the guide shaft section, so when pushing the bushing to install and dismount, the bushing will not be deformed, and the dismounting and mounting work can be smoothly realized.

[0021] On the basis of the above concept, in a basic embodiment, as shown in the figure, Figure 1 The bearing shaft includes the threaded section 11 and the guide shaft section 10, the force nut 2 is installed on the threaded section 11, the pressure convex ring 12 is arranged on the guide shaft section 10, and the bushing 8 dismounting device further includes the dismounting positioning sleeve 3 and the dismounting pushing sleeve 4, the inner diameter of the dismounting positioning sleeve 3 is greater than the outer diameter of the bushing 8, the dismounting pushing sleeve 4 has the ejection section, the inner diameter and the outer diameter of the ejection section are equal to the bushing 8, and the length of the ejection section is not less than the length of the bushing 8, so that the bushing 8 can be completely ejected from the bushing installation hole 9.

[0022] When dismounting the bushing 8, the dismounting positioning sleeve 3 is sleeved on the guide shaft section 10 of the bearing shaft, the threaded section 11 passes through the inner hole of the bushing 8, the dismounting positioning sleeve 3 is clamped between the pressure convex ring 12 and the hole edge of the bushing installation hole 9, the dismounting pushing sleeve 4 is clamped between the force nut 2 and the bushing 8, the force nut 2 is screwed, the dismounting pushing sleeve 4 and the bushing 8 can be pushed through the force nut 2, the bushing 8 can be ejected from the bushing installation hole 9 and enter the dismounting positioning sleeve 3. At the same time, when installing the bushing 8, the bushing 8 can be directly or indirectly pushed by the pressure convex ring 12, the bushing installation hole 9 can be directly or indirectly stopped by the force nut 2, the bearing shaft can be fixed and the force nut 2 can be screwed, and the bushing 8 can be directly or indirectly pushed into the bushing installation hole 9 by the pressure convex ring 12.

[0023] In the above process, since the guide shaft segment 10 has the same inner diameter as the inner diameter of the bushing 8 and has a length not less than the length of the bushing 8, the bushing 8 can be supported and guided from the inside by the guide shaft segment 10 when the bushing 8 is pushed and disassembled, and deformation of the bushing 8 does not occur, so that the bushing 8 is not damaged. When the bushing 8 is installed, the bushing 8 is also supported and guided from the inside by the guide shaft segment 10, so that deformation of the bushing 8 does not occur, and the bushing 8 is not damaged.

[0024] On the basis of the above embodiments, in one embodiment, the disassembly pushing sleeve 4 is a sleeve structure with uniform inner and outer diameters, and the sleeve structure as a whole constitutes an ejection segment, one end of which is used for abutting and cooperating with the end surface of the bushing 8, and the other end is used for abutting and cooperating with the end surface of the force applying nut 2. In another embodiment, the disassembly pushing sleeve 4 includes a sleeve structure and an inner turning edge 40 at one end of the sleeve structure, the center hole of the inner turning edge 40 is provided for the threaded segment 11 to pass through, the sleeve structure constitutes an ejection segment, and the end surface of the inner turning edge 40 abuts and cooperates with the end surface of the force applying nut 2 and abuts against each other when the bushing 8 is disassembled. In this way, the contact area between the disassembly pushing sleeve 4 and the force applying nut 2 can be increased, and stress concentration that causes deformation of the disassembly pushing sleeve 4 can be avoided.

[0025] On the basis of the above embodiments, in one embodiment, the disassembly positioning sleeve 3 is a sleeve structure with uniform inner and outer diameters, one end of the sleeve structure abuts against the end surface of the pressure bearing convex ring 12 and the other end abuts against the hole edge of the bushing mounting hole 9 when the bushing 8 is disassembled. In another embodiment, the disassembly positioning sleeve 3 includes a sleeve and an inner convex ring 31 arranged on the inside of the sleeve, the end surface of the inner convex ring 31 abuts and cooperates with the pressure bearing convex ring 12, and the sleeve part on one side of the axis of the inner convex ring 31 is a coaxial positioning segment 30 for being sleeved on the outside of the pressure bearing convex ring 12, and the sleeve part on the other side is a part for accommodating the bushing 8 for the bushing 8 to enter when the bushing 8 is pushed from the bushing mounting hole 9. The coaxial positioning segment 30 can ensure that the disassembly positioning sleeve 3 is coaxial with the force bearing shaft, so that the disassembly positioning sleeve 3 and the guide shaft segment 10 form an annular space with uniform size in the circumferential direction, so as to ensure that the bushing 8 can smoothly enter the part for accommodating the bushing 8 of the disassembly positioning sleeve 3. On this basis, in a preferred embodiment, the inner diameter of the inner convex ring 31 is greater than the outer diameter of the bushing 8, so that the axial size of the disassembly positioning sleeve 3 can be reduced on the premise of ensuring that the disassembly positioning sleeve 3 plays its own role.

[0026] On the basis of the above embodiments, the length of the guide shaft segment 10 can be slightly less than twice the length of the bushing 8, or equal to twice the length of the bushing 8, or greater than twice the length of the bushing 8. When the length of the guide shaft segment 10 is greater than twice the length of the bushing 8, the guide shaft segment 10 can be completely inserted into the bushing 8 when disassembled, so that the bushing 8 can be guided and supported in the entire axial length.

[0027] On the basis of the above-mentioned embodiments, in one embodiment, as shown in Figure 2 The bushing 8 dismounting device further comprises a mounting push sleeve 6 and a nut stop ring 7. The mounting push sleeve 6 is used to be sleeved outside the guide shaft section 10 and clamped between the bushing 8 and the pressure bearing convex ring 12. The nut stop ring 7 is used to be clamped between the force applying nut 2 and the hole edge of the bushing mounting hole 9. When dismounting the bushing 8, the mounting push sleeve 6 is sleeved outside the guide shaft section 10 of the force bearing shaft, and one end is in contact with the pressure bearing convex ring 12. The bushing 8 is sleeved outside the guide shaft section 10, and one end is in contact with the mounting push sleeve 6. The force bearing shaft is passed through the bushing mounting hole 9. The nut stop ring 7 is sleeved on the threaded section 11 extending out of the bushing mounting hole 9. The force applying nut 2 is screwed on the side of the nut stop ring 7 away from the guide shaft section 10. Rotating the force applying nut 2 can pull the force bearing shaft as a whole into the bushing mounting hole 9. At this time, the mounting push sleeve 6 can push the bushing 8 into the bushing mounting hole 9 under the drive of the force bearing convex ring.

[0028] The inner diameter of the mounting push sleeve 6 can be greater than the inner diameter of the bushing 8, but must be smaller than the outer diameter of the bushing 8, so as to be able to push the bushing 8. In one embodiment, the inner diameter of the mounting push sleeve 6 is equal to the outer diameter of the guide shaft section 10. In this way, when the mounting push sleeve 6 is sleeved on the guide shaft section 10, it can be coaxial with the guide shaft section 10 and the bushing 8. In this way, the mounting push sleeve 6 can stably apply an axial pushing force to the bushing 8. The outer diameter of the mounting push sleeve 6 can be smaller than the outer diameter of the bushing 8, or greater than the outer diameter of the bushing 8, but must be greater than the inner diameter of the bushing 8. When the outer diameter of the mounting push sleeve 6 is greater than the outer diameter of the bushing 8, in the process of screwing the force applying nut 2 and pushing the bushing 8 into the bushing mounting hole 9 through the mounting push sleeve 6, when the mounting push sleeve 6 is in contact with the hole edge of the bushing mounting hole 9, the installation of the bushing 8 is completed, avoiding excessive pushing of the bushing 8.

[0029] On the basis of the above-mentioned embodiments, relative rotation of the force bearing shaft and the force applying nut 2 is required when installing or dismounting the bushing 8. In order to facilitate the rotation, or to facilitate the rotation of the force bearing shaft, in a preferred embodiment, one end of the force bearing shaft away from the threaded section 11 is provided with a rotation stopping structure. The rotation stopping structure can be an internal hexagonal groove or an axially protruding rotation stopping hexagonal head 13, or a square groove or an axially protruding rotation stopping square head, which can be adapted to a wrench.

[0030] The above-mentioned is only a preferred embodiment of the present application, and is not used to limit the present application. The patent protection scope of the present application is subject to the claims, and any equivalent structural changes made according to the content of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. A bushing removal and installation device characterized by, The force bearing shaft comprises a threaded section and a guide shaft section with an inner diameter equal to that of the bushing and inserted into the bushing, a force applying nut is mounted on the threaded section, a pressure bearing protruding ring is arranged on the guide shaft section, the bushing dismounting device further comprises a dismounting positioning sleeve and a dismounting pushing sleeve, the inner diameter of the dismounting positioning sleeve is larger than the outer diameter of the bushing and is used to support between the pressure bearing protruding ring and the hole edge of the bushing mounting hole, the dismounting pushing sleeve is used to support between the bushing and the force applying nut, the dismounting pushing sleeve has an ejection section, the inner diameter and the outer diameter of the ejection section are equal to those of the bushing, and the length of the ejection section is not less than the length of the bushing.

2. The bushing removal device of claim 1, wherein, The end of the ejection section has an inward turning edge for abutting against the end surface of the force applying nut.

3. The bushing removal device of claim 1, wherein, The dismounting positioning sleeve comprises a sleeve body and an inner protruding ring arranged on the inner side of the sleeve body, the end surface of the inner protruding ring abuts against the pressure bearing protruding ring, and the sleeve body has a coaxial positioning section sleeved on the outer side of the pressure bearing protruding ring.

4. The bushing removal device of claim 3, wherein, The inner diameter of the inner protruding ring is larger than the outer diameter of the bushing.

5. The bushing removal device of claim 1, wherein, The length of the guide shaft section is not less than twice the length of the bushing.

6. The bushing removal device of any one of claims 1-5, wherein, The dismounting device further comprises a mounting pushing sleeve and a nut stop ring, the mounting pushing sleeve is used to be sleeved on the outer side of the guide shaft section and clamped between the bushing and the pressure bearing protruding ring, and the nut stop ring is used to be clamped between the force applying nut and the hole edge of the bushing mounting hole.

7. The bushing removal device of claim 6, wherein, The inner diameter of the mounting pushing sleeve is equal to the outer diameter of the guide shaft section.

8. The bushing removal device of claim 6, wherein, The outer diameter of the mounting pushing sleeve is larger than the outer diameter of the bushing.

9. The bushing removal device of any one of claims 1-5, wherein, The end of the force bearing shaft away from the threaded section is provided with a rotation stopping structure.

10. The bushing removal device of claim 9, wherein, The rotation stopping structure is a rotation stopping hexagonal head.

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