CN217152705U - Half-coupling mounting positioning ring - Google Patents
Half-coupling mounting positioning ring Download PDFInfo
- Publication number
- CN217152705U CN217152705U CN202122611896.5U CN202122611896U CN217152705U CN 217152705 U CN217152705 U CN 217152705U CN 202122611896 U CN202122611896 U CN 202122611896U CN 217152705 U CN217152705 U CN 217152705U
- Authority
- CN
- China
- Prior art keywords
- coupling
- mounting
- insertion section
- hole
- ring body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Gripping On Spindles (AREA)
Abstract
The utility model provides a half-coupling mounting and positioning ring, which is used for matching with a hydraulic tool to mount and position the half-coupling at a designated mounting position on a main shaft; the mounting positioning ring is a variable outer diameter ring body arranged between the hydraulic tool and the insertion section of the half coupling and the main shaft; when the hydraulic tool pushes the half coupling in the axial direction, the half coupling can be conveniently and quickly positioned at the appointed installation position. The utility model discloses to prior art's half-coupling rear portion installation holding ring be difficult for demolising after the installation, cause equipment trouble damage and incident easily to and the technical problem such as operating efficiency low proposes the solution, thereby realized the reliable installation location of half-coupling, eliminated the potential safety hazard, avoided violence to demolish the work piece damage that probably leads to, improved work efficiency, had better practicality and economic value.
Description
Technical Field
The utility model relates to a shaft coupling field, concretely relates to half-coupling installation positioner and installation positioning method.
Background
In the field of petrochemical industry, centrifugal compressors such as a catalytic main fan unit and a pneumatic unit are core equipment of an oil refining catalytic cracking device, and have a crucial position and function for normal and safe production of the oil refining catalytic cracking device. Centrifugal compressors are generally driven by a driving machine (motor or turbine), a coupling being used to connect the driving machine main shaft and the compressor main shaft to transmit motion and torque; the coupling consists of a driving machine driving end half coupling, an intermediate coupling and a centrifugal compressor half coupling. Wherein, the utility model discloses mainly relate to being connected of centrifugal compressor half-coupling and centrifugal compressor main shaft, the following called half-coupling is short for of centrifugal compressor half-coupling, the main shaft is short for of centrifugal compressor main shaft.
On one hand, the half coupling is frequently required to be disassembled for maintenance, so that the half coupling is connected with the main shaft in a detachable design; on the other hand, the half coupling and the main shaft are in a high-speed rotating state in work, so that high requirements are placed on the positioning and torque transmission of the half coupling, and the half coupling needs to be installed on the main shaft with a certain pretightening force so as to ensure that the connection between the half coupling and the main shaft is not loosened and the torque transmission is effective during high-speed movement.
At present, a main shaft and a half coupling usually adopt a connecting structure as shown in figures 1-2, as shown in figure 2, the main shaft 1 is a reducing pipe body provided with a step 11, a pipe section of the main shaft 1 below the step 11 is a main shaft inserting section 12, and the main shaft inserting section 12 is a 1:50 conical pipe with the outer diameter uniformly reduced from the step 11 to the end part of a propelling side; as shown in fig. 1, the half coupling 2 is a pipe body provided with a tapered through hole 21 inside, and the tapered through hole 21 is sleeved outside the spindle insertion section 12; the hydraulic tool 3 is used for propelling the half coupling 2 to move towards the step 11 on the spindle plug section 12, and the high-pressure oil is injected into the spindle plug section 12 to ream the spindle plug section 12 and the half coupling 2, the half coupling 2 is propelled along the axial direction by the pressure of the low-pressure oil, and the reaming and the propelling are alternately performed, so that the half coupling 2 and the spindle plug section 12 are positioned to a specified mounting position in an interference fit mode, and the positioning interference value is 2.5 thousandths of the outer diameter of the spindle plug section 12 at the moment. If the coupling is not connected according to the standard, the coupling part 2 is not installed in place or is excessively installed, and the tapered through hole 21 of the coupling part 2 is insufficient in tightening force or excessively deformed.
To ensure this positioning interference value, a positioning ring 4 is currently installed at the rear for positioning. The positioning ring 4 is a split structural ring body consisting of two semi-ring bodies; during installation, the rear installation positioning ring 4 is arranged between the half coupler 2 and the step 11 and sleeved on the main shaft insertion section 12; and then starting the hydraulic tool 3 to push the half coupler 2, and when the two axial end faces of the rear mounting positioning ring 4 are respectively abutted against the half coupler 2 and the vertical end face of the step 11, the half coupler 2 is just positioned at the appointed mounting position, and at the moment, the rear mounting positioning ring 4 is knocked off to complete the mounting and positioning of the half coupler 2. However, in practice, it has been found that this positioning method has disadvantages: on one hand, the rear mounting positioning ring 4 is clamped by the half coupler 2 and the step 11 in front and back, so that the rear mounting positioning ring 4 is not easy to detach, the operation is difficult and time-consuming, and the workpiece is easy to damage due to violent detachment; on the other hand, the operator may remove the rear mounting ring 4 to cause the coupling part 2 to be mounted in a non-position, which may cause equipment failure or even safety accident.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a half-coupling installation holding ring, mainly be difficult for demolising, cause equipment trouble damage and incident easily to prior art's half-coupling rear portion installation holding ring after the installation to and the technical problem such as operating efficiency low proposes the solution, thereby realized the reliable installation location of half-coupling, eliminated the potential safety hazard, avoided violently demolising the work piece damage that probably leads to, improved work efficiency, better practicality and economic value have.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
a half coupling mounting positioning ring is used for matching with a hydraulic tool to mount and position a half coupling at a designated mounting position on a main shaft; one end of the main shaft is provided with a main shaft insertion section, and one side of the end part of the main shaft insertion section is a propelling side; a through hole matched with the shape of the tube body of the spindle insertion section is formed in the half coupling, and the through hole is sleeved outside the spindle insertion section from the part of the propulsion side; the hydraulic tool is provided with a hole expanding oil supply nozzle and a hydraulic propelling end face, wherein the hole expanding oil supply nozzle is a cylindrical pipe body which can be inserted into the main shaft insertion section from the propelling side, and the hydraulic propelling end face is an end face which can be horizontally lapped with the propelling side end part of the half coupling and is used for propelling the half coupling to the propelling side along the axial direction so as to generate displacement relative to the main shaft insertion section and reach a specified installation position;
the mounting positioning ring is a variable outer diameter ring body arranged between the hydraulic tool and the half coupling and the main shaft insertion section, and the inner diameter of the ring body is larger than the outer diameter of the reaming oil supply nozzle; the outer wall of the mounting positioning ring is axially provided with a step, one side of the step is provided with a large ring body, and the outer diameter of the large ring body is larger than the inner diameter of the pushing side end part of the half coupling; the other side of the step is a small ring body, the outer diameter of the small ring body is smaller than the inner diameter of the pushing side end part of the through hole, and the axial thickness of the small ring body is t 0;
when the coupling is installed, the small ring body is inserted into the through hole from the propelling side, and the end face of the large ring body adjacent to one side of the small ring body is abutted against the propelling side end part of the coupling half; a reaming oil supply nozzle of the hydraulic tool penetrates through the ring center of the mounting positioning ring from the propelling side and is inserted into the main shaft insertion section for fixation, and the hydraulic propelling end face of the hydraulic tool is abutted against the end face of the large ring body on the side deviating from the small ring body 53; when the hydraulic tool pushes the half coupling in the axial direction, the small ring body abuts against the pushing side end part of the spindle plug-in section towards the vertical surface of the spindle plug-in section, and the half coupling is just at a designated installation position.
Preferably, the inner diameter of the ring body is matched with the outer diameter of the reaming oil supply nozzle, and the installation positioning ring can be just sleeved outside the reaming oil supply nozzle.
Preferably, the outer diameter of the large ring body is the same as the outer diameter of the driving side end portion of the coupling half.
Preferably, the outer diameter of the small ring body is matched with the inner diameter of the pushing side end part of the through hole, and the through hole can be just sleeved outside the small ring body.
Further, the value of t0 is calculated by the following formula:
t0＝t1-t2；
wherein t1 is the distance difference between the initial positions, and the measuring method is as follows: pushing the end part of the opposite side of the pushing side of the half coupling to the spindle insertion section, wherein the through hole is sleeved outside the spindle insertion section, and the through hole is tightly attached to the spindle insertion section and has an interference value of 0; at the moment, the half coupling is at an initial position, and the distance from the pushing side end part of the half coupling to the pushing side end part of the spindle inserting section is t 1;
t2 is the axial thrust, that is, when the half coupling is displaced from the initial position along the axial direction relative to the spindle insertion section by t2, the half coupling 2 is just at the designated installation position.
Preferably, the spindle insertion section is a tapered tube which is uniformly tapered towards the outer diameter of the pushing side end of the spindle insertion section along the axial direction, and the through hole formed in the half coupling is a tapered through hole.
Preferably, the spindle insertion section is a 1:50 conical pipe, the conical through hole is a 1:50 conical through hole, and the designated installation position of the half coupler is that the half coupler and the spindle insertion section are in interference fit and the positioning interference value is 2.5 permillage of the outer diameter of the spindle insertion section.
Preferably, the mounting positioning ring is made of metal.
To sum up, compared with the prior art, the utility model provides a pair of half-coupling installation holding ring through setting up position and shape that changes the installation holding ring, has solved the difficult technical problem who demolishs after the installation to realized the reliable installation location of half-coupling, eliminated the potential safety hazard, avoided violence to demolish the work piece damage that probably leads to, improved work efficiency, had better practicality and economic value.
Drawings
FIG. 1 is a schematic diagram of a prior art mounting and positioning structure using a rear mounting and positioning ring of a coupling half;
FIG. 2 is a schematic view of a prior art spindle;
fig. 3 is a schematic structural view of the half coupling in the initial position for mounting and positioning by using the mounting and positioning ring of the present invention;
fig. 4 is a schematic structural view of the half coupling at a designated mounting position for mounting and positioning by using the mounting and positioning ring of the present invention;
FIG. 5 is a side view of the mounting and positioning ring of the present invention;
fig. 6 is a front view structural diagram of the mounting positioning ring of the present invention.
Detailed Description
The present invention provides a positioning ring for mounting a coupling half, which is described in detail below with reference to the accompanying drawings and embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are simplified and have non-precise ratios, and are only used for convenience and clarity to assist in describing the embodiments of the present invention, and are not used for limiting the conditions of the present invention, so they have no technical essential meaning, and any structural modification, ratio relationship change or size adjustment should still fall within the scope covered by the present invention without affecting the function and the achievable purpose of the present invention.
It is to be noted that, in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 2 to 6, the present embodiment provides a mounting and positioning ring 5 for a coupling half 2 of a centrifugal compressor, for mounting and positioning the coupling half 2 at a designated mounting position on a main shaft 1 in cooperation with a hydraulic tool 3; as shown in fig. 2, the spindle 1 is a variable diameter tube, the tube is provided with a step 11 along an axial direction, so as to form two tube sections with different outer diameters, the tube section with a smaller outer diameter on the spindle 1 is a spindle insertion section 12, one side of the end part of the spindle insertion section 12 is a propelling side, the spindle insertion section 12 is a 1:50 conical tube with an outer diameter uniformly reduced from the step 11 to the propelling side end part, and an inner wall of the tube body on the propelling side is provided with an internal thread; as shown in fig. 3 and 4, the half coupling 2 is a pipe body provided with a tapered through hole 21 inside, the tapered through hole 21 is matched with the shape of the pipe body of the spindle plug section 12, and the tapered through hole 21 can be partially sleeved outside the spindle plug section 12 by a self-propelling part; the hydraulic tool 3 is provided with a reaming oil supply nozzle 31 and a hydraulic propelling end face 32, wherein the reaming oil supply nozzle 31 is a cylindrical pipe body provided with external threads, the outer diameter and the external threads of the pipe body are matched with the inner diameter and the internal threads of the main shaft insertion section 12, the reaming oil supply nozzle 31 can be inserted into the main shaft insertion section 12 in a threaded manner, and the reaming oil supply nozzle 31 is used for injecting high-pressure oil into the main shaft insertion section 12 to ream the main shaft insertion section 12 and the half coupling 2; the hydraulic propelling end face 32 is an annular end face coaxial with the reaming oil supply nozzle 31, the shape and the size of the hydraulic propelling end face 32 are matched with those of the propelling side end part of the half coupling 2, and can be mutually overlapped with the propelling side end part of the half coupling 2 in the horizontal direction, and the hydraulic propelling end face 32 can propel the half coupling 2 to displace towards the direction of the step 11 on the main shaft inserting section 12 along the axial direction under the pressure action of low-pressure oil; through reaming and propelling alternative operation, the half coupler 2 and the spindle plug section 12 are finally positioned to a specified mounting position in an interference fit mode, and the positioning interference value is 2.5 thousandth of the outer diameter of the spindle plug section 12.
As shown in fig. 5 and 6, the mounting and positioning ring 5 is a metal variable outer diameter ring body, the inner diameter d0 of the ring body is matched with the outer diameter of the reaming oil supply nozzle 31, and the mounting and positioning ring 5 can be just sleeved outside the reaming oil supply nozzle 31; the outer wall of the mounting positioning ring 5 is provided with a step 51 along the axial direction, one side of the step 51 is provided with a large ring body 52, and the outer diameter D1 of the large ring body 52 is the same as the outer diameter of the pushing side end part of the half coupling 2; the small ring body 53 is arranged on the other side of the step 51, the outer diameter D2 of the small ring body 53 is matched with the inner diameter of the pushing side end part of the tapered through hole 21, the tapered through hole 21 can be just sleeved outside the small ring body 53, and the axial thickness of the small ring body 53 is t 0;
during installation, as shown in fig. 3, 5 and 6, the installation positioning ring 5 is arranged between the hydraulic tool 3 and the half coupling 2 as well as between the hydraulic tool and the main shaft insertion section 12; wherein, the small ring body 53 is inserted into the tapered through hole 21 of the half coupling 2 from the propelling side, and the end surface of the large ring body 52 adjacent to one side of the small ring body 53 is abutted with the propelling side end part of the half coupling 2; a reaming oil supply nozzle 31 of the hydraulic tool 3 penetrates through the ring center of the mounting positioning ring 5 from the propelling side and is inserted into the spindle insertion section 12 in a threaded manner, and the hydraulic propelling end face 32 of the hydraulic tool 3 is abutted against the end face of the large ring body 52 on the side deviating from the small ring body 53; when the hydraulic tool 3 axially pushes the half coupling 2, so that the vertical surface of the small ring body 53 of the mounting positioning ring 5 abuts against the pushing side end of the spindle insertion section 12, as shown in fig. 4, the interference fit between the half coupling 2 and the spindle insertion section 12 just reaches a positioning interference value, and the position of the half coupling 2 is the specified mounting position specified by the standard.
the value of t0 is calculated by the following formula, as shown in fig. 3:
t0＝t1-t2；
wherein t1 is the distance difference between the initial positions, and the measuring method is as follows: manually pushing the end part of the opposite side of the pushing side of the half coupling 2 onto the spindle insertion section 12 to enable the conical through hole 21 to be sleeved outside the spindle insertion section 12, and lightly knocking the pushing side end part of the half coupling 2 by a wood stick to enable the conical through hole 21 to be tightly attached to the spindle insertion section 12; at this time, the interference value between the conical through hole 21 and the spindle insertion section 12 is 0, the half-coupling 2 is at the initial position, and the distance from the thrust side end of the half-coupling 2 to the thrust side end of the spindle insertion section 12 is t 1;
t2 is an axial thrust amount provided by a centrifugal compressor equipment manufacturer according to the positioning interference value, the axial thrust amount t2 is that when the hydraulic tool 3 axially pushes the half coupling 2 from the initial position to t2 relative to the spindle insertion section 12, the interference fit between the half coupling 2 and the spindle insertion section 12 just reaches the positioning interference value, and the position of the half coupling 2 is a specified installation position specified by a standard.
As shown in fig. 3 to 6, the present embodiment further provides a method for mounting and positioning a half coupling by using the above mounting and positioning ring, including the steps of:
1. installing a half coupling 2:
manually pushing the end part of the opposite side of the pushing side of the half coupling 2 onto the spindle plug section 12 to enable the conical through hole 21 to be sleeved outside the spindle plug section 12;
2. installing and installing a positioning ring 5:
inserting the small ring body 53 provided with the positioning ring 5 into the tapered through hole 21 of the half coupling 2 from the pushing side, and abutting the end surface of the large ring body 52 adjacent to the small ring body 53 with the pushing side end part of the half coupling 2;
3. installing a hydraulic tool 3:
penetrating a reaming oil supply nozzle 31 of the hydraulic tool 3 through the ring center of the mounting positioning ring 5 and inserting the reaming oil supply nozzle into the spindle insertion section 12 in a threaded manner, so that a hydraulic propelling end face 32 of the hydraulic tool 3 is abutted against an end face of one side, away from the small ring body 53, of the large ring body 52;
4. propulsion coupling part 2:
the half coupling 2 is pushed axially by the hydraulic tool 3, so that the elevation of the small ring body 53 provided with the positioning ring 5 is abutted against the pushing side end part of the spindle plug-in section 12; at the moment, the interference fit between the half coupling 2 and the spindle insertion section 12 just reaches a positioning interference value, and the position of the half coupling 2 is a specified installation position specified by a standard;
5. removing the hydraulic tool 3 and installing the positioning ring 5:
and (3) successively removing the hydraulic tool 3 and the mounting positioning ring 5 to complete the mounting and positioning of the half coupling 2.
To sum up, the utility model provides a pair of half-coupling installation holding ring through setting up position and the shape that changes the installation holding ring, has solved the difficult technical problem who demolishs after the installation to realized the reliable installation location of half-coupling, eliminated the potential safety hazard, avoided violence to demolish the work piece damage that probably leads to, improved work efficiency, had better practicality and economic value.
While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (8)
1. A half coupling mounting positioning ring is used for matching with a hydraulic tool to mount and position a half coupling at a specified mounting position on a main shaft; one end of the main shaft is provided with a main shaft inserting section, and one side of the end part of the main shaft inserting section is a propelling side; a through hole matched with the shape of the tube body of the spindle insertion section is formed in the half coupling, and the through hole is sleeved outside the spindle insertion section from the part of the propulsion side; the hydraulic tool is provided with a hole expanding oil supply nozzle and a hydraulic propelling end face, wherein the hole expanding oil supply nozzle is a cylindrical pipe body which can be inserted into the main shaft insertion section from the propelling side, and the hydraulic propelling end face is an end face which can be horizontally lapped with the propelling side end part of the half coupling and is used for propelling the half coupling to the propelling side along the axial direction so as to generate displacement relative to the main shaft insertion section and reach a specified installation position; it is characterized in that the preparation method is characterized in that,
the mounting positioning ring is a variable outer diameter ring body arranged between the hydraulic tool and the half coupling and the main shaft insertion section, and the inner diameter of the ring body is larger than the outer diameter of the reaming oil supply nozzle; the outer wall of the mounting positioning ring is axially provided with a step, one side of the step is provided with a large ring body, and the outer diameter of the large ring body is larger than the inner diameter of the pushing side end part of the half coupling; the other side of the step is a small ring body, the outer diameter of the small ring body is smaller than the inner diameter of the pushing side end part of the through hole, and the axial thickness of the small ring body is t 0; when the coupling is installed, the small ring body is inserted into the through hole from the propelling side, and the end face of the large ring body adjacent to one side of the small ring body is abutted against the propelling side end part of the coupling half; a reaming oil supply nozzle of the hydraulic tool penetrates through the ring center of the mounting positioning ring from the propelling side and is inserted into the main shaft insertion section for fixation, and the hydraulic propelling end face of the hydraulic tool is abutted against the end face of the large ring body, which is far away from one side of the small ring body; when the hydraulic tool pushes the half coupling in the axial direction, the small ring body abuts against the pushing side end part of the spindle plug-in section towards the vertical surface of the spindle plug-in section, and the half coupling is just at a designated installation position.
2. The coupling mounting and positioning collar of claim 1 wherein said inner diameter of said ring body is adapted to the outer diameter of said enlarged bore fuel filler neck, said mounting and positioning collar fitting snugly over the exterior of said enlarged bore fuel filler neck.
3. The coupling mounting retaining ring of claim 1 wherein the outer diameter of said large ring is the same as the outer diameter of the drive side end of said coupling.
4. The retaining ring for mounting a coupling member according to claim 1, wherein the outer diameter of the small ring member is adapted to the inner diameter of the pushing side end of the through hole, and the through hole is disposed just outside the small ring member.
5. The coupling mounting retaining ring of claim 1 wherein said t0 is calculated by the formula:
t0＝t1-t2；
wherein t1 is the distance difference between the initial positions, and the measuring method is as follows: pushing the end part of the opposite side of the pushing side of the half coupling to the spindle insertion section, wherein the through hole is sleeved outside the spindle insertion section, and the through hole is tightly attached to the spindle insertion section and has an interference value of 0; at the moment, the half coupling is at an initial position, and the distance from the pushing side end part of the half coupling to the pushing side end part of the spindle inserting section is t 1;
t2 is the axial thrust, that is, when the half coupling is displaced from the initial position along the axial direction relative to the spindle insertion section by t2, the half coupling 2 is just at the designated installation position.
6. The retaining ring for mounting the coupling half according to claim 1, wherein the spindle attachment section is a tapered tube whose outer diameter is uniformly tapered toward the end of the drive side thereof in the axial direction, and the through hole provided in the coupling half is a tapered through hole.
7. The half-coupling mounting positioning ring of claim 6, wherein the spindle insertion section is a 1:50 conical tube, the conical through hole is a 1:50 conical through hole, and the designated mounting position of the half-coupling means that the half-coupling and the spindle insertion section are in interference fit and the positioning interference value is 2.5% o of the outer diameter of the spindle insertion section.
8. The coupling mounting collar of claim 1 wherein said mounting collar is metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122611896.5U CN217152705U (en) | 2021-10-28 | 2021-10-28 | Half-coupling mounting positioning ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122611896.5U CN217152705U (en) | 2021-10-28 | 2021-10-28 | Half-coupling mounting positioning ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217152705U true CN217152705U (en) | 2022-08-09 |
Family
ID=82658983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122611896.5U Active CN217152705U (en) | 2021-10-28 | 2021-10-28 | Half-coupling mounting positioning ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217152705U (en) |
-
2021
- 2021-10-28 CN CN202122611896.5U patent/CN217152705U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217152705U (en) | Half-coupling mounting positioning ring | |
| CN111922450A (en) | Taper inner hole large gear grinding clamp and control method thereof | |
| CN101722339A (en) | Gear milling positioning fixture for spiral bevel gear | |
| CN204221710U (en) | A kind of universal dismounting coupling device | |
| CN202170933U (en) | Shaft connecting structure for transmitting torque | |
| CN111408918A (en) | Traction tool for low-pressure turbine of engine | |
| CN110682248B (en) | Impeller mounting tool | |
| US20210323128A1 (en) | Tool system for installation/removal of interference fit components | |
| CN217620330U (en) | Glassy ring mounting tool assembly for long shaft piece of machine tool | |
| EP1096193A2 (en) | Swivel coupling and method for attaching a swivel nut to a tail piece | |
| CN205350122U (en) | Elastic sleeve column pin coupler | |
| CN210475590U (en) | Fixture for hollow shaft machining | |
| CN209774549U (en) | Broken pipe extractor | |
| CN111729970A (en) | Reaming equal-diameter device and process method for buckling and pressing connector | |
| CN216577635U (en) | Coupler drawing device | |
| US5960686A (en) | Alignment pin for tube squaring machine | |
| CN219542548U (en) | Grinding machine pulling tool for grinding external thread shaft | |
| CN105459012A (en) | Pin pulling device for threaded-hole-free positioning pins | |
| CN215370674U (en) | Connecting mandrel | |
| CN215548203U (en) | Tool clamp for assembling floating hoop valve seat | |
| CN219074402U (en) | Locking tool for special-shaped hollow perforated thin-wall part | |
| CN210830889U (en) | Transmission pipe flange connecting structure for rotor wing test bed | |
| CN219227392U (en) | Magnetic steel pressing device of high-speed motor | |
| CN115694104A (en) | Magnetic steel pressing device of high-speed motor | |
| CN220993443U (en) | Quick-change bolt device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |