CN112338865A - Force unloading device for pneumatic valve maintenance - Google Patents
Force unloading device for pneumatic valve maintenance Download PDFInfo
- Publication number
- CN112338865A CN112338865A CN201910734090.XA CN201910734090A CN112338865A CN 112338865 A CN112338865 A CN 112338865A CN 201910734090 A CN201910734090 A CN 201910734090A CN 112338865 A CN112338865 A CN 112338865A
- Authority
- CN
- China
- Prior art keywords
- internal thread
- screw rod
- pneumatic valve
- flange
- sleeve
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The invention provides a force unloading device for pneumatic valve maintenance, which is characterized in that a connecting assembly connected with a driving rod of a pneumatic valve, a force unloading control mechanism for positioning and supporting the connecting assembly and blocking the connecting assembly and a supporting seat for fixing the force unloading control mechanism on the pneumatic valve are provided, the force unloading control mechanism comprises a screw rod and an internal thread sleeve, one end of the screw rod is connected with the connecting assembly, the internal thread sleeve guides the screw rod to move linearly, the internal thread sleeve is rotatably arranged on the supporting seat, and the other end of the screw rod is arranged in the internal thread sleeve. Then at the in-process of disintegrating the pneumatic head of pneumatic valve, play the effect of blockking through the screw to coupling assembling, rotate the position that the internal thread cover lead screw followed this screw rod of its axial rectilinear movement and location again to the control actuating lever removes gradually, the spring force that makes the pneumatic head can slowly release, the degree of difficulty of the operation of unloading when not only reducing the pneumatic head and disintegrating improves pneumatic valve maintenance operating efficiency, still strengthens the fail safe nature of pneumatic head operation of disintegrating.
Description
Technical Field
The invention belongs to the technical field of nuclear power equipment maintenance, and particularly relates to a force unloading device for pneumatic valve maintenance.
Background
The pneumatic valve has the advantages of good adjustment linearity, high starting speed, low cost and the like, and becomes a valve widely applied to nuclear power stations. Due to the design of the structure of the pneumatic valve, the diaphragm of the pneumatic head is usually a vulnerable part, so that the diaphragm of the pneumatic valve needs to be frequently subjected to fault maintenance or preventive maintenance, so as to ensure the safe and stable operation of nuclear power equipment. At present, at the in-process that the nuclear power station pneumatic valve overhauld, when the pneumatic head to the pneumatic valve disintegrates, because the release of pneumatic head spring force is difficult to control, not only lead to pneumatic valve to overhaul work efficiency low, but also can receive pneumatic head spring pressure's influence, cause personnel's injury or equipment to damage easily, bring serious potential safety hazard for the maintenance work of pneumatic valve.
Disclosure of Invention
The invention aims to provide a force unloading device for pneumatic valve maintenance, and aims to solve the problems that in the prior art, when a pneumatic head of a pneumatic valve is disassembled, the release of the spring force of the pneumatic head is difficult to control, the maintenance work efficiency is low, and personnel injury or equipment damage is easily caused.
In order to achieve the purpose, the technical scheme adopted by the invention is to provide a force unloading device for overhauling a pneumatic valve, which comprises a connecting assembly, a force unloading control mechanism and a supporting seat, wherein the connecting assembly is used for being connected with a driving rod of the pneumatic valve, the force unloading control mechanism is used for positioning and supporting the connecting assembly and blocking the connecting assembly so as to control the driving rod to move and release the spring force of the pneumatic head, the supporting seat is used for fixing the force unloading control mechanism on the pneumatic valve, the force unloading control mechanism comprises a screw rod and an internal thread sleeve, one end of the screw rod is connected with the connecting assembly, the internal thread sleeve guides the screw rod to linearly move and positions the screw rod, the internal thread sleeve is rotatably installed on the supporting seat.
Furthermore, the supporting seat comprises a supporting flange connected with a flange of the pneumatic valve, a positioning flange sleeved on the internal thread sleeve, and a plurality of supporting columns connected with the supporting flange and the positioning flange, one end of each supporting column is connected with the supporting flange, the other end of each supporting column is connected with the positioning flange, and the internal thread sleeve is rotatably installed on the positioning flange.
Further, the connecting flange and the positioning flange are identical in structure.
Further, the connecting assembly comprises a bolt sleeve for connecting with the end of the driving rod through a bolt, and the bolt sleeve is mounted at one end, far away from the internal thread sleeve, of the screw rod.
Further, the screw rod is kept away from the one end of internal thread cover is equipped with the bulge loop to radial evagination, the bolt cover includes that the inner wall establishes screwed pipe cover section and follows pipe cover section axial extension's necking down section, the confession has been seted up to the side of necking down section the slotted hole that the bulge loop was put into, the necking down section is kept away from the one end correspondence of pipe cover section is equipped with dodges the breach of screw rod, the bulge loop is rotatable install in the slotted hole, the screw rod is kept away from the one end of internal thread cover is passed the breach stretches into in the slotted hole.
Furthermore, the screw rod is provided with a positioning retaining ring in a radial outward protruding mode, and the positioning retaining ring abuts against the end face, far away from one end of the pipe sleeve section, of the neck section.
Furthermore, the connection assembly further comprises an anti-dropping sleeve for preventing the convex ring from dropping from the slotted hole, and the anti-dropping sleeve is sleeved on the necking section and covers the slotted hole.
Furthermore, the unloading control mechanism also comprises an annular supporting disk used for stopping the positioning flange, the annular supporting disk is connected with one end, close to the supporting flange, of the internal thread sleeve, and the positioning flange abuts against one surface, far away from the supporting flange, of the annular supporting disk.
Furthermore, the unloading control mechanism also comprises a locking nut for locking the internal thread sleeve on the positioning flange and a thrust ball bearing arranged between the positioning flange and the locking nut, and the outer wall of the internal thread sleeve is provided with an external thread in threaded fit with the locking nut.
Furthermore, one end of the internal thread sleeve, which is far away from the screw rod, is provided with a rotating head for clamping a wrench.
The force unloading device for overhauling the pneumatic valve has the advantages that: compared with the prior art, the force unloading device for overhauling the pneumatic valve, provided by the invention, has the advantages that the connecting assembly connected with the driving rod of the pneumatic valve, the force unloading control mechanism for positioning and supporting the connecting assembly and blocking the connecting assembly and the supporting seat for fixing the force unloading control mechanism on the pneumatic valve are provided, the internal thread sleeve of the force unloading control mechanism is rotatably arranged on the supporting seat, and the screw rod connected with the connecting assembly is arranged in the internal thread sleeve. Then at the in-process that disintegrates the pneumatic head of pneumatic valve, screw rod through unloading control mechanism plays the effect of blockking to coupling assembling, rotate the position that internal thread cover lead screw followed this screw rod of its axial rectilinear movement and location again, thereby the control actuating lever removes gradually, make the spring force of pneumatic head slowly release, the degree of difficulty of the operation of unloading when not only having reduced pneumatic head and disintegrating, pneumatic valve maintenance operating efficiency has been improved, and effectively prevent and avoided personnel's injury and equipment damage, the fail safe nature of the operation of pneumatic head disintegrating has been improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic perspective view of a force relief device for servicing a pneumatic valve according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a side view direction of a force unloading device for repairing a pneumatic valve, provided by the embodiment of the invention;
FIG. 3 is a schematic cross-sectional structural view of a force relief device for servicing a pneumatic valve provided in an embodiment of the present invention;
FIG. 4 is a schematic diagram of an exploded structure of a force relief device for servicing a pneumatic valve according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of a force-release control mechanism for servicing a pneumatic valve according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a connection assembly for servicing a pneumatic valve provided in accordance with an embodiment of the present invention;
fig. 7 is a schematic perspective view of a bolt sleeve rotatably mounted on a screw for repairing a pneumatic valve according to an embodiment of the present invention.
Wherein, in the drawings, the reference numerals are mainly as follows:
1-a connecting assembly; 11-bolt sleeve; 111-a jacket section; 112-a necking section; 113-a slot; 114-a notch; 12-anti-falling sleeve;
2-a release control mechanism; 21-screw rod; 211-convex ring; 212-positioning stop ring; 22-an internal thread sleeve; 221-external threads; 23-an annular support disc; 24-a locking nut; 25-thrust ball bearing; 26-fastening the nut; 27-a rotating head;
3-a support seat; 31-a support flange; 32-a positioning flange; 33-prop.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "connected" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 3, a power unloading device for repairing a pneumatic valve according to the present invention will now be described. The invention provides a force unloading device for overhauling a pneumatic valve, which comprises a connecting assembly 1 connected with a driving rod of the pneumatic valve, a force unloading control mechanism 2 used for positioning and supporting the connecting assembly 1 and blocking the connecting assembly 1 to control the movement of the driving rod to release the spring force of a pneumatic head, and a supporting seat 3 used for fixing the force unloading control mechanism 2 on the pneumatic valve, wherein the force unloading control mechanism 2 comprises a screw rod 21 one end of which is connected with the connecting assembly 1, and an internal thread sleeve 22 used for guiding the screw rod 21 to move linearly and positioning the position of the screw rod 21, the internal thread sleeve 22 is rotatably arranged on the supporting seat 3, and the other end of the screw rod 21 is arranged in the.
Compared with the prior art, the force unloading device for the maintenance of the pneumatic valve, provided by the invention, has the advantages that the connecting component 1 connected with the driving rod of the pneumatic valve, the force unloading control mechanism 2 for positioning and supporting the connecting component 1 and blocking the connecting component 1 and the supporting seat 3 for fixing the force unloading control mechanism 2 on the pneumatic valve are provided, the internal thread sleeve 22 of the force unloading control mechanism 2 is rotatably arranged on the supporting seat 3, and the screw 21 connected with the connecting component 1 is arranged in the internal thread sleeve 22. Then at the in-process of disassembling the pneumatic head to the pneumatic valve, screw rod 21 through unloading control mechanism 2 plays the effect of blockking to coupling assembling 1, rotate internal thread cover 22 guide screw rod 21 along its axial rectilinear movement and fix a position the position of this screw rod 21 again, thereby the control actuating lever removes gradually, make the spring force of pneumatic head slowly release, the degree of difficulty of the operation of unloading when not only having reduced pneumatic head to disassemble, pneumatic valve maintenance operating efficiency has been improved, and effectively prevent and avoided personnel to be injured and equipment to damage, the fail safe nature of the operation of pneumatic head disassembling has been improved.
Further, referring to fig. 2 to 4 together, as a specific embodiment of the power unloading device for repairing the pneumatic valve provided by the present invention, the support base 3 includes a support flange 31 for connecting with a flange of the pneumatic valve, a positioning flange 32 sleeved on the internal thread bush 22, and a plurality of support posts 33 connecting the support flange 31 and the positioning flange 32, one end of each support post 33 is connected with the support flange 31, the other end of each support post 33 is connected with the positioning flange 32, and the internal thread bush 22 is rotatably mounted on the positioning flange 32.
In this embodiment, the supporting base 3 includes a supporting flange 31 and a positioning flange 32 which are arranged in parallel at intervals, the positioning flange 32 is supported and fixed on the supporting flange 31 by a plurality of supporting posts 33, and the internal thread bushing 22 is rotatably mounted on the positioning flange 32. When the pneumatic head is disassembled, the support flange 31 is connected with the flange of the pneumatic valve, so that the support base 3 can be conveniently and fixedly connected with the pneumatic valve, and the connection stability of the support base 3 and the pneumatic valve is enhanced. Fix a position internal thread cover 22 on supporting seat 3 through flange 32, only need rotate the internal thread cover 22 of installation on the flange 32 of location, alright leading screw 21 moves towards the direction of keeping away from pneumatic head, and fix a position screw rod 21's position, the spring force that can control pneumatic head when pneumatic head disintegrates releases gradually, the degree of difficulty of the operation of unloading when not only having reduced pneumatic head disintegrates, the work efficiency that pneumatic valve overhauld has still been improved, the fail safe nature of pneumatic head disintegration operation has been ensured.
Further, referring to fig. 2 to 4 together, as a specific embodiment of the force unloading device for repairing a pneumatic valve provided by the present invention, the connecting flange and the positioning flange 32 have the same structure, preferably, the connecting flange and the positioning flange 32 are arranged in mirror symmetry, and the screw 21 and the connecting assembly 1 are located between the connecting flange and the positioning flange 32.
In this embodiment, the shape and size of flange and flange 32 are unanimous to flange and flange 32 are just right to setting up each other, so that flange and flange 32 are mirror symmetry and set up, and lie in screw rod 21 and coupling assembling 1 between flange and flange 32, in order to reduce the volume that is used for pneumatic valve to overhaul to unload power device, and strengthen the reliable and stable nature of pneumatic head disintegration operation, effectively prevent personnel injury and equipment damage.
Further, referring to fig. 3 and fig. 7 together, as an embodiment of the force unloading device for repairing the pneumatic valve provided by the present invention, the connecting assembly 1 includes a bolt sleeve 11 for connecting with a bolt at an end of the driving rod, and the bolt sleeve 11 is mounted at an end of the screw 21 away from the internal thread sleeve 22.
In this embodiment, the bolt sleeve 11 is installed at the end of the screw rod 21 far away from the internal thread sleeve 22, and is connected with the end part of the driving rod of the pneumatic head through the bolt sleeve 11, so that the unloading control mechanism 2 can be conveniently connected with the driving rod of the pneumatic head, and the stability of the connection between the unloading control mechanism 2 and the driving rod of the pneumatic head is enhanced, thereby improving the working efficiency of pneumatic valve maintenance and increasing the safety and reliability of the disassembly operation of the pneumatic head.
Specifically, referring to fig. 3 and fig. 7, the bolt sleeve 11 may be further rotatably installed at an end of the screw 21 away from the internal threaded sleeve 22, and when the screw 21 and the bolt sleeve 11 are rotatably installed, while the screw 21 of the unloading control mechanism 2 is used to block the bolt sleeve 11 of the connection assembly 1, the pneumatic head spring force elastically pushes the bolt sleeve 11 in a direction toward the bolt sleeve 11. Under the pushing and pressing action of the pneumatic head spring force on the bolt sleeve 11, the friction force at the rotary connection position of the bolt sleeve 11 and the screw rod 21 is greatly increased, the friction force between the screw rod 21 and the bolt sleeve 11 is larger than the friction force between the screw rod 21 and the internal thread sleeve 22, the circumferential rotation of the screw rod 21 during force unloading can be effectively avoided, the rotary internal thread sleeve 22 can stably guide the screw rod 21 to linearly move along the axial direction of the screw rod 21, the position of the screw rod 21 is positioned, and the purpose of controlling the driving rod to gradually move so that the pneumatic head spring force can be slowly released is achieved.
Further, referring to fig. 4, fig. 6 and fig. 7 together, as a specific embodiment of the power releasing device for repairing the pneumatic valve provided by the present invention, a protruding ring 211 is disposed at an end of the screw 21 away from the internal thread sleeve 22 and protrudes outward in a radial direction, the bolt sleeve 11 includes a sleeve section 111 having a thread on an inner wall and a neck section 112 extending along an axial direction of the sleeve section 111, a side surface of the neck section 112 is provided with a slot 113 for the protruding ring 211 to be inserted into, an end of the neck section 112 away from the sleeve section 111 is correspondingly provided with a notch 114 for avoiding the screw 21, the protruding ring 211 is rotatably installed in the slot 113, and an end of the screw 21 away from the internal thread sleeve 22 extends into the slot 113 through the notch 114.
Specifically, when the protruding ring 211 is rotatably mounted in the slot 113, the pneumatic head spring force elastically pushes the bolt sleeve 11 toward the bolt sleeve 11 while blocking the bolt sleeve 11 of the connecting assembly 1 by the screw 21 of the unloading control mechanism 2. Under the pushing and pressing action of the pneumatic head spring force on the bolt sleeve 11, the friction force at the rotary connection position of the convex ring 211 and the groove hole 113 is greatly increased, so that the friction force between the screw rod 21 and the bolt sleeve 11 is greater than the friction force between the screw rod 21 and the internal thread sleeve 22, the circumferential rotation of the screw rod 21 during force unloading can be effectively avoided, the rotary internal thread sleeve 22 can stably guide the screw rod 21 to linearly move along the axial direction of the screw rod 21, the position of the screw rod 21 is positioned, and the purpose of controlling the driving rod to gradually move so as to slowly release the pneumatic head spring force is achieved.
In this embodiment, a protruding ring 211 is disposed at one end of the screw 21 far away from the internal thread sleeve 22 and protrudes outward in a radial direction, a slot 113 is disposed at a side surface of the neck section 112 of the bolt sleeve 11, and the sleeve section 111 and the neck section 112 are integrally formed, a notch 114 for avoiding the screw 21 is correspondingly disposed at one end of the neck section 112 far away from the sleeve section 111, the protruding ring 211 is rotatably mounted in the slot 113, and one end of the screw 21 far away from the internal thread sleeve 22 penetrates through the notch 114 and extends into the slot 113, so that the bolt sleeve 11 and the screw 21 can be rotatably mounted, and the operation is convenient. This connection structure, when guaranteeing joint strength between bolt cover 11 and the screw rod 21, still make and to take place smooth and easy relative rotation between bolt cover 11 and the screw rod 21, reduced the pneumatic head and dismantled the degree of difficulty of power operation, improved the work efficiency that pneumatic valve overhauld. In addition, the connecting structure can realize the detachable installation between the bolt sleeve 11 and the screw 21, so that the adaptive bolt sleeve 11 can be replaced according to the type of the bolt at the end part of the driving rod of the pneumatic head, and the force unloading device for overhauling the pneumatic valve has good universality.
Further, referring to fig. 4, fig. 5 and fig. 7 together, as an embodiment of the force unloading device for repairing the pneumatic valve provided by the present invention, a positioning stop ring 212 is protruded radially outward from the screw 21, and the positioning stop ring 212 abuts against an end surface of the necking section 112 away from the end of the sleeve section 111.
In this embodiment, a positioning stop ring 212 is convexly arranged on the screw rod 21, so that a part between the positioning stop ring 212 and the convex ring 211 forms a ring groove avoiding the notch 114 in the circumferential direction of the screw rod 21, and when the convex ring 211 is placed in the groove hole 113 of the necking section 112, the positioning stop ring 212 abuts against the end face of the necking section 112 far away from one end of the pipe sleeve section 111, so as to position the bolt sleeve 11, so as to enhance the stability of controlling the release of the spring force of the pneumatic head, and improve the safety and reliability of the disassembling operation of the pneumatic head. Moreover, the positioning stop ring 212 can block the bolt sleeve 11, so that when the screw 21 and the bolt sleeve 11 are rotatably mounted, the screw 21 of the unloading control mechanism 2 can block the bolt sleeve 11 of the connecting assembly 1, and the spring force of the pneumatic head can elastically push the bolt sleeve 11 towards the direction of the bolt sleeve 11. Under the pushing and pressing action of the pneumatic head spring force on the bolt sleeve 11, the friction force between the positioning retaining ring 212 and the necking section 112 is greatly increased, so that the friction force between the screw rod 21 and the bolt sleeve 11 is greater than the friction force between the screw rod 21 and the internal thread sleeve 22, the circumferential rotation of the screw rod 21 during force unloading can be effectively avoided, the rotating internal thread sleeve 22 can stably guide the screw rod 21 to linearly move along the axial direction of the screw rod 21, the position of the screw rod 21 is positioned, and the purpose of controlling the driving rod to gradually move so that the pneumatic head spring force can be slowly released is achieved.
Further, referring to fig. 4, fig. 6 and fig. 7, as an embodiment of the power removing device for repairing the pneumatic valve provided by the present invention, the connecting assembly 1 further includes an anti-dropping sleeve 12 for preventing the collar 211 from dropping out of the slot 113, and the anti-dropping sleeve 12 is sleeved on the neck section 112 and covers the slot 113.
In this embodiment, the anti-slip sleeve 12 is sleeved on the necking section 112, and the anti-slip sleeve 12 covers the slot hole 113 to keep the protruding ring 211 opposite to the slot hole 113 in the direction toward the slot hole 113, so as to effectively prevent the protruding ring 211 from falling off from the slot hole 113 to cause failure, effectively prevent and avoid personnel injury and equipment damage, and improve the safety and reliability of the pneumatic head disassembly operation. Moreover, the outer diameter of the anti-drop sleeve 12 is equal to that of the pipe sleeve section 111, the end face of the anti-drop sleeve 12 abuts against a step face formed by the connection of the necking section 112 and the pipe sleeve section 111, so that the anti-drop sleeve 12 is axially supported through the step face, the heat conduction stability of the anti-drop sleeve 12 is enhanced, the anti-drop performance of the anti-drop sleeve 12 is improved, the convex ring 211 is prevented from dropping from the groove hole 113 to cause operation faults, and the pneumatic valve maintenance operation efficiency is improved.
Further, referring to fig. 1, fig. 3 and fig. 5 together, as an embodiment of the power unloading device for repairing the pneumatic valve according to the present invention, the power unloading control mechanism 2 further includes an annular support plate 23 for stopping the positioning flange 32, the annular support plate 23 is connected to an end of the internal thread sleeve 22 close to the support flange 31, and the positioning flange 32 abuts against a side of the annular support plate 23 away from the support flange 31.
In this embodiment, be equipped with annular supporting disk 23 in the one end of internal thread cover 22, play to support to hold and block the effect to annular supporting disk 23 through positioning flange 32 towards the direction of supporting flange 31 to usable annular supporting disk 23 carries out axial support to internal thread cover 22, and in order to prevent that the spring force of pneumatic head from pushing up internal thread cover 22 from positioning flange 32, strengthened internal thread cover 22 and rotated the stability of installing on positioning flange 32, improved the fail safe nature of pneumatic head's operation of disassembling.
Further, referring to fig. 1, fig. 3 and fig. 4 together, as a specific embodiment of the force unloading device for repairing the pneumatic valve according to the present invention, the force unloading control mechanism 2 further includes a lock nut 24 for locking the internal thread sleeve 22 to the positioning flange 32, and a thrust ball bearing 25 installed between the positioning flange 32 and the lock nut 24, wherein an external thread 221 for threadedly engaging with the lock nut 24 is provided on an outer wall of the internal thread sleeve 22.
In this embodiment, the locking nut 24 is sleeved on the internal thread bush 22, the external thread 221 in threaded fit with the locking nut 24 is arranged on the outer wall of the internal thread bush 22, and the internal thread bush 22 is locked on the positioning flange 32 through the locking nut 24, so that the internal thread bush 22 is prevented from loosening and moving or falling off from the positioning flange 32, and the stability of the disassembling operation of the pneumatic head is not affected. And, install thrust ball bearing 25 between flange 32 and lock nut 24 to form the axial holding power to lock nut 24, avoid forming the friction between lock nut 24 and the flange 32, cause the interference to hinder to the rotation of internal thread cover 22, thereby strengthened the stability of unloading power device operation and use that is used for pneumatic valve to overhaul, improved pneumatic valve and overhauld the operating efficiency.
Further, referring to fig. 3 and 4 together, as a specific embodiment of the power removing device for repairing a pneumatic valve provided by the present invention, the internal threaded sleeve 22 is further provided with a fastening nut 26 for preventing the locking nut 24 from loosening, and the fastening nut 26 is provided on the internal threaded sleeve 22 for preventing the locking nut 24 from loosening, thereby enhancing the stability of the power removing device for repairing a pneumatic valve in operation.
Further, referring to fig. 1 and fig. 5 together, as a specific embodiment of the force unloading device for repairing the pneumatic valve provided by the present invention, a rotating head 27 for clamping a wrench is disposed at one end of the internal thread sleeve 22 away from the screw 21, so that when in use, the wrench clamps the rotating head 27 to rotate, the internal thread sleeve 22 can be rotated to guide the screw 21 to move towards a direction away from the pneumatic head, and the position of the screw 21 is located, thereby controlling the spring force of the pneumatic head to be gradually released, reducing the difficulty of the force unloading operation when the pneumatic head is disassembled, and having the advantages of convenient operation and high working efficiency. Specifically, the rotary head 27 may be a square head, hexagonal head, octagonal head, or other rectangular prism rotary head 27 for gripping by a wrench or other gripping tool. Of course, the rotary head 27 may be configured as a rotary rod with saw teeth, protrusions or grooves, and its specific structure, shape and size may be set according to actual needs, and is not limited herein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a unload power device for pneumatic valve overhauls which characterized in that: including be used for the coupling assembling that links to each other with the actuating lever of pneumatic valve, be used for the location support coupling assembling blocks and blocks coupling assembling is in order to control the actuating lever removes the release the power control mechanism that unloads of pneumatic head spring force and be used for with it is fixed in to unload power control mechanism supporting seat on the pneumatic valve, unload power control mechanism include one end with screw rod, the guide that coupling assembling links to each other the screw rod rectilinear movement fixes a position the internal thread cover of this screw rod position, internal thread cover rotate install in on the supporting seat, the other end of screw rod install in the internal thread cover.
2. A force relief device for service of a pneumatic valve as set forth in claim 1, wherein: the supporting seat comprises a supporting flange, a positioning flange and a plurality of supporting columns, the supporting flange is used for being connected with a flange of the pneumatic valve, the positioning flange is sleeved on the internal thread sleeve, the supporting flange is connected with the positioning flange, one end of each supporting column is connected with the supporting flange, the other end of each supporting column is connected with the positioning flange, and the internal thread sleeve is rotatably installed on the positioning flange.
3. A force relief device for service of pneumatic valves as set forth in claim 2, wherein: the connecting flange and the positioning flange are identical in structure.
4. A force relief device for service of a pneumatic valve as set forth in claim 1, wherein: the connecting assembly comprises a bolt sleeve used for being connected with the end part of the driving rod through a bolt, and the bolt sleeve is installed at one end, far away from the internal thread sleeve, of the screw rod.
5. A force relief device for service of pneumatic valves as set forth in claim 4, wherein: the screw rod is kept away from the one end of internal thread cover is equipped with the bulge loop to radial evagination, the bolt cover includes that the inner wall establishes screwed pipe cover section and follows pipe cover section axial extension's necking down section, the confession has been seted up to the side of necking down section the slotted hole that the bulge loop was put into, the necking down section is kept away from the one end correspondence of pipe cover section is equipped with dodges the breach of screw rod, the bulge loop is rotatable install in the slotted hole, the screw rod is kept away from the one end of internal thread cover is passed the breach stretches into in the slotted hole.
6. A force relief device for service of a pneumatic valve as set forth in claim 5, wherein: and a positioning retaining ring is arranged on the screw rod in a radially outward protruding manner and abuts against the end face of the neck section far away from one end of the pipe sleeve section.
7. A force relief device for service of a pneumatic valve as set forth in claim 5, wherein: the connecting assembly further comprises an anti-falling sleeve for preventing the convex ring from falling off from the slotted hole, and the anti-falling sleeve is sleeved on the necking section and covers the slotted hole.
8. A force relief device for service of pneumatic valves as set forth in claim 2, wherein: the unloading control mechanism further comprises an annular supporting disk used for stopping the positioning flange, the annular supporting disk is connected with one end, close to the supporting flange, of the internal thread sleeve, and the positioning flange abuts against one surface, far away from the supporting flange, of the annular supporting disk.
9. A force relief device for service of a pneumatic valve as set forth in claim 8, wherein: the unloading control mechanism further comprises a locking nut for locking the internal thread sleeve on the positioning flange and a thrust ball bearing arranged between the positioning flange and the locking nut, and external threads matched with the locking nut in a threaded mode are arranged on the outer wall of the internal thread sleeve.
10. A force relief device for service of a pneumatic valve as set forth in any one of claims 1 through 9, wherein: the one end that the screw rod was kept away from to the internal thread cover is equipped with the rotating head that is used for supplying spanner centre gripping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910734090.XA CN112338865A (en) | 2019-08-09 | 2019-08-09 | Force unloading device for pneumatic valve maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910734090.XA CN112338865A (en) | 2019-08-09 | 2019-08-09 | Force unloading device for pneumatic valve maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112338865A true CN112338865A (en) | 2021-02-09 |
Family
ID=74367665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910734090.XA Pending CN112338865A (en) | 2019-08-09 | 2019-08-09 | Force unloading device for pneumatic valve maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112338865A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524116A (en) * | 2021-08-19 | 2021-10-22 | 上海康恒环境股份有限公司 | Hydraulic cylinder extracting tool |
-
2019
- 2019-08-09 CN CN201910734090.XA patent/CN112338865A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524116A (en) * | 2021-08-19 | 2021-10-22 | 上海康恒环境股份有限公司 | Hydraulic cylinder extracting tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210588042U (en) | Device for screwing nut of main shaft of aircraft engine | |
| RU2010146995A (en) | ADAPTER COVER | |
| US11248709B2 (en) | Fast blind plate switching device | |
| CN109551427B (en) | Dismounting device for threaded connection end cover | |
| JP2018119541A (en) | Combustion liner tool | |
| CN112338865A (en) | Force unloading device for pneumatic valve maintenance | |
| CN211137015U (en) | Force unloading device for pneumatic valve maintenance | |
| RU2528071C1 (en) | Clamping device for machine wheel for servicing of wheels and method of reverse fixing of wheel in clamping device of machine for wheel servicing | |
| RU202004U1 (en) | Mechanical seal assembly device | |
| CN215830987U (en) | Movable triple-force-transmission anti-torque device for large-scale transmission friction disc | |
| CN112388293B (en) | Nut force limiting device | |
| CN213106582U (en) | High-pressure valve maintenance tool | |
| WO2021224402A1 (en) | Bit attachment device and tightening module | |
| CN210830106U (en) | Wheel end shaft head self-locking device | |
| CN210099917U (en) | Furnace roller bearing dismounting device | |
| CN210650487U (en) | Nuclear power dedicated main pump oil seal dismounting device | |
| CN211589930U (en) | Motor spindle dismounting tool | |
| CN212311873U (en) | Adjustable chain wrench | |
| CN217703264U (en) | Large-scale adapter sleeve bearing preloading device | |
| CN215847926U (en) | Dismounting device for damping disc of starting generator | |
| CN216780832U (en) | Coaxiality positioning device | |
| CN219492881U (en) | Thrust disc axial locking device | |
| CN215990473U (en) | Tapered rotor motor brake tensioning sleeve locking nut | |
| CN212900969U (en) | Hydraulic test plug extraction device | |
| CN108573820A (en) | Operate connecting lever and its connecting lever disk |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |