CN209755095U - Flange dismounting tool - Google Patents
Flange dismounting tool Download PDFInfo
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- CN209755095U CN209755095U CN201821879733.7U CN201821879733U CN209755095U CN 209755095 U CN209755095 U CN 209755095U CN 201821879733 U CN201821879733 U CN 201821879733U CN 209755095 U CN209755095 U CN 209755095U
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Abstract
the utility model relates to a flange overhauls technical field, provides a flange assembly and disassembly tools. The tool comprises a first clamping seat, a second clamping seat, a screw rod and a fixing nut. The screw rod comprises a first section provided with an external thread and connected with the fixing nut, a second section adjacent to the first section and a third section adjacent to the second section and provided with the external thread; the first clamping seat and the second clamping seat respectively comprise a main body part and a clamping claw part, a first through hole is formed in the main body part, a thread is arranged in the first through hole of the second clamping seat, the first through hole of the first clamping seat is connected with the third section of the lead screw, the first through hole of the first clamping seat is a smooth surface, and the clamping claw part is perpendicular to the axial direction of the first through hole and is provided with a first groove. The flange dismounting tool can realize the expansion and contraction of the flange.
Description
Technical Field
The utility model relates to a flange overhauls technical field, in particular to flange assembly and disassembly tools.
Background
the oil and gas transmission equipment and the pipeline are usually connected by flanges, flange holes of the two flange plates are aligned, and the two flange plates are connected by bolts. After the flange is used for a period of time, the flange is influenced by the assembly welding process technology and the tensile force and the stress of a connecting pipeline, and the gap between two flange plates is possibly too large or too small, so that the disassembly and the assembly of the connecting flange are time-consuming and labor-consuming.
at present, in the operation is dismantled to the flange, adopt the flange to strut the ware with two ring flanges usually, insert the clearance of two ring flanges with two wedge-shaped separable subassemblies during the use, utilize external drive to make two subassemblies separate, and then strut the flange.
in the process of implementing the present invention, the inventor finds that the related art has at least the following problems: the flange spreader used at present has a single function, only has the function of spreading the flange, can be used only under the condition of disassembling the flange, and cannot realize the assembly of two flange plates.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a flange assembly and disassembly tools can prop open the flange and can accomplish the equipment of flange again, improves the efficiency and the convenience that the operation was overhauld to the flange. The specific technical scheme is as follows:
The embodiment of the utility model provides a flange dismounting tool, which comprises a first clamping seat, a second clamping seat, a screw rod and a fixed nut, wherein,
The screw rod comprises a first section, a second section and a third section, wherein the first section is positioned at one end of the screw rod and is provided with an external thread, the second section is a smooth cylinder and is adjacent to the first section, and the third section is provided with an external thread and is adjacent to the second section;
Any one of the first clamping seat and the second clamping seat comprises a main body part and a clamping jaw part, the main body part is in a cuboid shape, a first through hole penetrating through the main body part is formed in the main body part, threads are formed in the inner wall of the first through hole of the second clamping seat, the second clamping seat is in threaded connection with the third section of the screw rod through the first through hole, the second clamping seat is suitable for moving on the third section of the screw rod, the inner wall of the first through hole of the first clamping seat is a smooth surface and suitable for the first section and the second section of the screw rod to penetrate through, the clamping jaw part is perpendicular to the axial direction of the first through hole, a first groove is formed in the direction perpendicular to the axial direction of the first through hole of the clamping jaw part, and the first groove is suitable for clamping the first clamping seat and the second clamping seat on a bolt of a flange plate;
the fixing nut is connected with the first section of the screw rod penetrating through the first clamping seat and is suitable for fixedly connecting the screw rod with the first clamping seat.
Alternatively, the pawl portion is integral with the body portion.
Alternatively, the thickness of the claw portion in the axial direction of the first through hole is smaller than the gap between the two butted flanges.
optionally, the length of the second section of the screw is equal to the length of the first through hole of the first clamping seat.
Optionally, the diameter of the first section of the screw is smaller than the diameter of the second section, and the diameter of the second section is smaller than the diameter of the third section.
Optionally, the diameter of the first through hole of the first clamping seat is larger than the diameter of the second section of the screw rod and smaller than the diameter of the third section.
optionally, the flange dismounting tool further comprises a fixing base plate, a second through hole is formed in the fixing base plate, the diameter of the second through hole is smaller than the outer diameter of the fixing nut and smaller than the diameter of the third section of the screw rod, and the first section of the screw rod penetrates through the first through hole of the first clamping seat and the second through hole of the fixing base plate to be in threaded connection with the fixing nut.
Optionally, the external threads of the first and third sections of the lead screw are right-handed threads.
Optionally, the first groove is arc-shaped and gradually increases in depth in a direction approaching the main body portion.
Optionally, the length of the wire rod is greater than the furthest distance between the two sets of flanges on either side of the valve.
The embodiment of the utility model provides a technical scheme's beneficial effect includes at least:
The utility model provides a flange assembly and disassembly tools all including the jack catch portion that is provided with first recess on first cassette and the second cassette, on the first recess of this jack catch portion was suitable for the bolt between two ring flanges of embedding. Two sides of the valve are connected with two oil pipes through two groups of flanges, two flange plates of each group of flanges are connected through bolts, the first clamping seat is clamped on the bolts between the two flange plates of one group through the first groove, and the second clamping seat is clamped on the bolts between the two flange plates of the other group. The first clamping seat and the second clamping seat are connected through the screw rod, the first section of the screw rod sequentially penetrates through the first through hole of the second clamping seat and the first through hole of the first clamping seat so as to be connected with the fixing nut, and the second section of the screw rod is located in the first through hole of the first clamping seat so as to fixedly connect the screw rod with the first clamping seat. The third section of the screw rod adjacent to the second section is provided with external threads, the first through hole of the second clamping seat is provided with internal threads, and the second clamping seat can be connected with the third section of the screw rod through threads. In the rotating process of the screw rod, the screw rod is connected with the second clamping seat in a threaded manner, so that the second clamping seat moves along the length of the screw rod in the direction away from the first clamping seat, the two flange plates clamping the second clamping seat are opened, or the clamping claw part of the first clamping seat is clamped on one bolt on the outer side of the flange plate connected with the oil pipe, the clamping claw part of the second clamping seat is clamped on the other bolt on the outer side of the flange plate connected with the oil pipe, the screw rod is rotated in the opposite direction, the second clamping seat moves in the direction close to the first clamping seat, and the two flange plates which are farthest away are contracted. Moreover, the tool is simple in structure and convenient to operate.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings required in the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of a flange dismounting tool according to an embodiment of the present disclosure;
Fig. 2 is a schematic structural diagram of a screw rod in the flange dismounting tool provided in the embodiment of the present application;
Fig. 3 is a left side view of a first clamping seat in the flange dismounting tool provided in the embodiment of the present application;
FIG. 4 is a front view of a flange handling tool according to an embodiment of the present disclosure mounted to a flange to hold the flange open;
FIG. 5 is a top view of a flange removal tool according to an embodiment of the present disclosure mounted to a flange to hold the flange open;
FIG. 6 is a top view of a shrink flange with a flange release tool attached to the flange according to an embodiment of the present disclosure.
The reference numerals in the drawings denote:
1-a first card holder; 11-a body portion; 12-a jaw portion; 101 — a first via; 102 — a first groove;
2-a second card holder; 21-a main body portion; 22-a jaw portion; 201 — a first via; 202-a first recess;
3, a screw rod; 31 — first stage; 32-a second section; 33-the third stage;
4, fixing a nut;
5, fixing a base plate; 501-second through hole;
6, an oil pipe;
7-a flange plate;
8, a bolt;
9-valve.
Detailed Description
The general technical concept of the present invention will be described first.
An embodiment of the utility model provides a flange assembly and disassembly tools, including first cassette, second cassette, lead screw and fixation nut. The screw rod comprises a first section, a second section and a third section, wherein the first section is positioned at one end of the screw rod and is provided with an external thread, the second section is a smooth cylinder and is adjacent to the first section, and the third section is provided with an external thread and is adjacent to the second section; any one of the first clamping seat and the second clamping seat comprises a main body part and a clamping jaw part, the main body part is in a cuboid shape, a first through hole penetrating through the main body part is arranged on the main body part, threads are arranged on the inner wall of the first through hole of the second clamping seat, the second clamping seat is in threaded connection with the third section of the screw rod through the first through hole, the second clamping seat is suitable for moving on the third section of the screw rod, the inner wall of the first through hole of the first clamping seat is a smooth surface and is suitable for the first section and the second section of the screw rod to penetrate through, the clamping jaw part is vertical to the axial direction of the first through hole, a first groove is arranged in the direction vertical to the axial direction of the first through hole, and the first groove is suitable for clamping the first clamping seat and the second; the fixing nut is connected with the first section of the screw rod penetrating through the first clamping seat and is suitable for fixedly connecting the screw rod with the first clamping seat.
The first clamping seat and the second clamping seat of the flange dismounting tool respectively comprise clamping claw parts provided with first grooves, and the first grooves in the clamping claw parts are suitable for being embedded into bolts between the two flange plates. Two sides of the valve are connected with two oil pipes through two groups of flanges, two flange plates of each group of flanges are connected through bolts, the first clamping seat is clamped on the bolts between the two flange plates of one group through the first groove, and the second clamping seat is clamped on the bolts between the two flange plates of the other group. The first clamping seat and the second clamping seat are connected through the screw rod, the first section of the screw rod sequentially penetrates through the first through hole of the second clamping seat and the first through hole of the first clamping seat so as to be connected with the fixing nut, and the second section of the screw rod is located in the first through hole of the first clamping seat so as to fixedly connect the screw rod with the first clamping seat. The third section of the screw rod adjacent to the second section is provided with external threads, the first through hole of the second clamping seat is provided with internal threads, and the second clamping seat can be connected with the third section of the screw rod through threads. In the rotating process of the screw rod, the screw rod is connected with the second clamping seat in a threaded manner, so that the second clamping seat moves along the length of the screw rod in the direction away from the first clamping seat, the two flange plates clamping the second clamping seat are opened, or the clamping claw part of the first clamping seat is clamped on one bolt on the outer side of the flange plate connected with the oil pipe, the clamping claw part of the second clamping seat is clamped on the other bolt on the outer side of the flange plate connected with the oil pipe, the screw rod is rotated in the opposite direction, the second clamping seat moves in the direction close to the first clamping seat, and the two flange plates which are farthest away are contracted. Moreover, the tool is simple in structure and convenient to operate.
In order to make the technical solutions and advantages of the present invention clearer, the following will describe the embodiments of the present invention in further detail with reference to the accompanying drawings.
An embodiment of the application provides a flange dismounting tool, fig. 1 is a schematic structural diagram of the dismounting tool, fig. 2 is a schematic structural diagram of a screw rod in the dismounting tool, and fig. 3 is a left side view of a first clamping seat in the dismounting tool; FIG. 4 is a front view of the assembly and disassembly tool mounted to a flange to distract the flange; FIG. 5 is a top view of a flange removal tool according to an embodiment of the present disclosure mounted to a flange to hold the flange open; FIG. 6 is a top view of a shrink flange with a flange release tool attached to the flange according to an embodiment of the present disclosure.
referring to fig. 1, the flange dismounting tool includes a first clamping seat 1, a second clamping seat 2, a screw rod 3 and a fixing nut 4.
Referring to fig. 2, the screw rod 3 includes a first section 31, a second section 32 and a third section 33, the first section 31 is located at one end of the screw rod 3 and is provided with an external thread, the second section 32 is a smooth cylinder and is adjacent to the first section 31, and the third section 33 is provided with an external thread and is adjacent to the second section 32.
For example, in the embodiment of the present application, the first section 31 of the screw rod 3 is located at one end of the screw rod 3, and the first section 31 is provided with external threads, the second section 32 may be smooth cylindrical relative to the first section 31, and the second section 32 is adjacent to the first section 31, and the third section 33 is also provided with external threads and is adjacent to the second section 32, that is, the second section 32 is located between the first section 31 and the third section 33.
for example, referring to fig. 2, in the present embodiment, the first section 31 and the second section 32 of the lead screw 3 are shorter in length, and the third section 33 may occupy the main length of the lead screw 3. Of course, the length of the first section 31, the second section 32 and the third section 33 of the screw rod 3 is not limited to this, and in other embodiments, the first section 31, the second section 32 and the third section 33 may be set to other lengths according to the actual use situation.
In one implementation of the embodiments of the present application, for example, a segment of a cylinder may be directly lathed into the shape of the lead screw 3. Of course, the present application is not limited to this, and in other implementations of the embodiment of the present application, the first section 31, the second section 32, and the third section 33 of the screw rod 3 may also be three parts, and further connected in other reasonable manners to form the shape of the screw rod 3.
Referring to fig. 1, each of the first card holder 1 and the second card holder 2 includes a main body 11 and a clamping jaw 12, the main body 11 is rectangular, the main body 11 is provided with a first through hole 101, the inner wall of the first through hole 201 of the second card holder 2 is provided with a thread, the second card holder 2 is in threaded connection with the third section 33 of the screw rod 3 through the first through hole 201, the second card holder 2 is suitable for moving on the third section 33 of the screw rod 3, the inner wall of the first through hole 101 of the first card holder 1 is a smooth surface, and the first section 31 and the second section 32 of the screw rod 3 are suitable for passing through.
For example, in the embodiment of the present application, the first cartridge 1 includes the main body portion 11 and the claw portion 12, the second cartridge 2 also includes the main body portion 21 and the claw portion 22, and both the main body portions may be rectangular parallelepiped. Different from the above, the inner wall of the first through hole 101 of the first clamping seat 1 is a smooth surface, and is suitable for the first section 31 and the second section 32 of the screw rod 3 to pass through, the second section 32 is located in the first through hole 101 of the first clamping seat 1, and the first section 31 and the third section 33 are both located outside the first through hole 101 of the first clamping seat 1. The inner wall of the first through hole 201 of the second clamping seat 2 is provided with a thread, and the second clamping seat 2 is connected with the external thread of the third section 33 of the screw rod 3 through the thread, so that the second clamping seat 2 is suitable for moving on the third section 33 of the screw rod 3 along the length direction of the screw rod 3, and is relatively displaced with the first clamping seat 1, and the flange dismounting tool is suitable for flange plates 7 at different distances.
The shape of the main body 11 is not limited to this, and the main body 11 may have other appropriate shapes in other embodiments of the present invention.
Referring to fig. 1, the jaw portion 12 is perpendicular to the axial direction of the first through hole 101 of the main body portion 11, and a first groove 102 is provided in the direction perpendicular to the axial direction of the first through hole 101 of the jaw portion 12, and the first groove 102 is adapted to clamp the first cartridge 1 and the second cartridge 2 to the bolt 8 of the flange 7.
For example, in the embodiment of the present application, the claw portion 12 of any one of the first cartridge 1 and the second cartridge 2 may have a certain thickness along the axial direction of the first through hole 101, a first groove 102 is provided in the axial direction of the first through hole 101 of the claw portion 12, and the first groove 102 penetrates through the thickness of the whole claw portion 12, and the claw portion 12 is clamped on the bolt 8 of the flange 7 through the first groove 102.
For example, in the embodiment of the present application, referring to fig. 1, the screw rod 3 may respectively pass through the first through hole 201 of the second cartridge 2 and the first through hole 101 of the first cartridge 1, that is, the length direction of the screw rod 3 coincides with the axial direction of the two first through holes. When the first clamping seat 1 and the second clamping seat 2 are sleeved on the screw rod 3, the clamping claw part 12 of each clamping seat is vertical to the screw rod 3.
For example, referring to fig. 1, the first grooves 102 on the first cartridge 1 and the second cartridge 2 may each have an arc shape with a depth gradually increasing in a direction approaching the main body portion 11. Also, the claw portion 12 and the body portion 11 may be integrated.
For example, in the embodiment of the present application, the first grooves 102 on any one of the first cartridge 1 and the second cartridge 2 may be both arc-shaped, and the depth of each first groove 102 may gradually increase in a direction approaching the main body portion 11, for example, referring to fig. 3, the first grooves 102 may be inverted U-shaped. And the clamping claw parts 12 of the first clamping seat 1 and the second clamping seat 2 can be clamped on the bolts 8 of the flange 7 through the first grooves 102.
For example, in the embodiment of the present application, the clamping jaw portion 12 and the main body portion 11 of the first clamping seat 1 may be of an integral structure, and the clamping jaw portion 22 and the main body portion 21 of the second clamping seat 2 may be of an integral structure, so that the whole first clamping seat 1 is clamped on the bolts 8 between the two flanges 7 of one set of flanges, and the second clamping seat 2 is clamped on the bolts 8 between the two flanges 7 of the other set of flanges. Of course, the present application is not limited thereto, and in other embodiments, the clamping jaw portion 12 and the main body portion 11 of any one of the first clamping base 1 and the second clamping base 2 may be two parts, and the clamping jaw portion 12 and the main body portion 11 may be fixedly connected by welding or other reasonable manners.
in the embodiment of the present invention, since the claw portion 11 is subjected to a large force when expanding or contracting the flange, the first holder 1 and the second holder 2 may be preferably made of steel having a large hardness, but the present invention is not limited thereto, and in other embodiments, the first holder 1 and the second holder 2 may be made of other materials having a large hardness.
Referring to fig. 5, the thickness of the claw portion 12 of any one of the first cartridge 1 and the second cartridge 2 in the axial direction of the first through hole 101 may be smaller than the gap between the two flanges 7.
For example, when the tool is used to expand the flange, the claw part 12 of the first cartridge 1 is clamped on the bolt 8 between two flanges 7 of one group through the first groove 102 of the first cartridge 1, the claw part 22 of the second cartridge 2 is clamped between two flanges 7 of the other group through the first groove 202 of the second cartridge 2, and when the two butted flanges 7 are expanded, the thickness of the claw part 12 of the first cartridge 1 and the second cartridge 2 is ensured to be smaller than the gap between the two butted flanges 7.
In order to facilitate clamping of the entire first clamping base 1 or the entire second clamping base 2 on the bolts 8 of the flange 7, the thickness of the main body portion 11 may be preferably set to be greater than the gap between the two flanges 7, but the thickness of the main body portion 11 in the axial direction of the first through hole 101 is not limited to this, and in other embodiments, the thickness of the main body portion 11 in the axial direction of the first through hole 101 may be equal to or less than the gap between the two butted flanges 7 when the two butted flanges 7 are spread apart.
Referring to fig. 2, the first section 31 of the screw 3 may have a diameter smaller than that of the second section 32, and the second section 32 may have a diameter smaller than that of the third section 33.
In addition, the diameter of the first through hole 101 of the first cartridge 1 may be greater than the diameter of the second section 32 of the lead screw 3 and less than the diameter of the third section 33.
For example, in the embodiment of the present application, the inner wall of the first through hole 101 of the first clamping seat 1 may be a smooth surface, and is suitable for being sleeved on the second section 32 of the screw rod 3 which is also a smooth surface. In order to facilitate the first section 31 of the screw 3 to pass through the first through hole 101 of the first clamping seat 1, the diameter of the first section 31 with the external thread can be set to be smaller than that of the second section 32, and the diameter of the second section 32 can be set to be smaller than that of the third section 33.
In order to prevent the first clamping seat 1 from rotating in the process of rotating the screw rod 3 to affect the assembly and disassembly of the flange, the diameter of the first through hole 101 of the first clamping seat 1 can be set to be larger than the diameter of the second section 32 of the screw rod 3. Also in order to limit the entry of the third section 33 of the screw 3 into the first through hole 101 of the first cartridge 1, the diameter of the first through hole 101 of the first cartridge 1 may be made smaller than the diameter of the third section 33 of the screw 3. Therefore, in the rotating process of the screw rod 3, the first clamping seat 1 can be clamped on the flange 7, and displacement cannot occur. And the thread of the first through hole 201 of the second clamping seat 2 is matched with the thread of the third section 33 of the screw rod 3, so that the second clamping seat 2 moves along the length direction of the screw rod 3 through the rotation of the screw rod 3 and moves towards the direction close to the first clamping seat 1 or moves away from the first clamping seat 1, and further the expansion or contraction of the flange is achieved.
referring to fig. 1, the fixing nut 4 is connected to a first section 31 of the screw rod 3 penetrating through the first clamping seat 1, and is adapted to fixedly connect the screw rod 3 with the first clamping seat 1.
for example, in the embodiment of the present application, the first section 31 of the screw rod 3 passes through the first through hole 101 of the first cartridge 1, and the first section 31 of the screw rod 3 abuts against the side wall of the first cartridge 1 by being screwed with the fixing nut 4, so that the first cartridge 1 is fixed between the first section 31 and the third section 33 of the screw rod 3, thereby preventing the screw rod 3 and the first cartridge 1 from being displaced relatively.
Referring to fig. 4, the flange dismounting tool may further include a fixing pad 5, the fixing pad 5 may be provided with a second through hole 501, a diameter of the second through hole 501 may be smaller than an outer diameter of the fixing nut 4, and the first section 31 of the lead screw 3 may pass through the first through hole 101 of the first clamping seat 1 and the second through hole 501 of the fixing pad 5 to be in threaded connection with the fixing nut 4.
For example, in the embodiment of the present application, the outer diameter of the fixing nut 4 may be smaller than the diameter of the first through hole 101 of the first cartridge 1, and in order to prevent the fixing nut 4 from entering the first through hole 101 of the first cartridge 1 when being connected with the first section 31 of the lead screw 3, a fixing pad 5 may be interposed between the fixing nut 4 and the sidewall of the first cartridge 1.
the fixed shim plate 5 may be a thin steel plate, and the fixed shim plate 5 may be provided with a second through hole 501. The diameter of the second through hole 501 can be smaller than the outer diameter of the fixing nut 4 and is larger than the diameter of the first section 31 of the screw rod 3, and the first section 31 of the screw rod 3 passes through the first through hole 101 of the first clamping seat 1 and the second through hole 501 of the fixing base plate 5, so that the fixing base plate 5 is in threaded connection with the fixing nut 4 and one side of the fixing base plate 5 is abutted against the side wall of the first clamping seat 1.
The opposite side of the fixed nut 4 and the fixed backing plate 5 is abutted, and the first clamping seat 1 is fixed between the third section 33 of the screw rod 3 and the fixed nut 4, so that the first clamping seat 1 is prevented from rotating in the rotating process of the screw rod 3. Of course, the present application is not limited thereto, and in other embodiments, the fixing nut 4 having an outer diameter larger than the diameter of the first through hole 101 of the first cartridge 1 may be directly used.
In the embodiment of the present application, for example, the length of the second section 32 of the lead screw 3 may be equal to the length of the first through hole 101 of the first cartridge 1, when the flange mounting and dismounting tool is connected, the first section 31 of the lead screw 3 is threaded through the first through hole 101 of the first cartridge 1 and is connected with the fixing nut 4, and when the length of the second section 32 of the lead screw 3 is equal to the length of the first through hole 101 of the first cartridge 1, tightening the fixing nut 4 may just fix the first cartridge 1 between the fixing nut 4 and the third section 33 of the lead screw 3. Of course, the present application is not limited thereto, and in other embodiments, the length of the second section 32 of the screw rod 3 may be set to be slightly smaller than the length of the first through hole 101 of the first clamping seat 1.
Referring to fig. 2, the external threads of the first section 31 and the third section 33 of the lead screw 3 may be both right-handed threads.
for example, in the embodiment of the present application, the external threads of the first section 31 and the third section 33 of the lead screw 3 may be both right-handed threads, and the threads of the inner wall of the first through hole 201 of the fixing nut 4 connected to the first section 31 and the inner wall of the first through hole 201 of the second clamping seat 2 connected to the third section 33 may also be both right-handed threads. Of course, the present application is not limited thereto, and in other embodiments, the external threads of the first section 31 and the third section 33 of the lead screw 3 may be left-handed threads, and similarly, the threads in the first through hole 201 of the second clamping seat 2 and the fixing nut 4 may be matched with each other to form left-handed threads.
Referring to fig. 6, the length of the lead screw 3 may be greater than the farthest distance between the two sets of flanges on both sides of the valve 9.
For example, in the embodiment of the application, when the flange is contracted, the first clamping seat 1 of the flange dismounting tool is clamped on the bolt 8 on the outer side of the flange 7 connected with the oil pipe 6 on one side of the valve 9. And adjusting the position of the second clamping seat 2 on the third section 33 of the screw rod 3, so that the second clamping seat 2 is clamped on the bolt 8 on the outer side of the flange 7 connected with the other oil pipe 6 on the other side of the valve 9. And then rotate the lead screw 3 and make the second cassette 2 move towards the direction of being close to or keeping away from first cassette 1, consequently, will guarantee that the length of lead screw 3 is enough long for first cassette 1 and second cassette 2 can both clamp on the bolt 8 of two sets of flanges.
In the embodiment of the application, one flange dismounting tool can be used for spreading two groups of flanges on two sides of the valve 9 respectively twice, or two flange dismounting tools can be simultaneously used for being clamped on two opposite sides of the oil pipe 6 in opposite directions.
In addition, when the flange is contracted, one flange dismounting tool can be clamped on the bolts 8 at the outer sides of the two flange plates 7 which are farthest away, or in order to avoid overlarge stress of the flange dismounting tool, the two flange dismounting tools can be clamped on the two opposite sides of the oil pipe 6 in opposite directions. Certainly, the number of the tools used in the process of expanding and contracting the flange is not limited to the above, and corresponding flange dismounting tools can be added according to actual conditions in order to reduce the time for dismounting the flange and avoid overlarge stress of the tools.
similarly, in this embodiment of the application, before the flange is disassembled and assembled, a worker may first pass the screw rod 3 through the first through hole 201 of the second clamping seat 2 and the first through hole 101 of the first clamping seat 1 in sequence, and connect the first section 31 of the screw rod 3, which passes through the first clamping seat 1 and the fixed cushion plate 5, with the fixing nut 4.
Then the first clamping seat 1 is clamped on the bolt 8 of the flange 7 at one side of the valve 9, and then the distance between the second clamping seat 2 and the first clamping seat 1 is adjusted by rotating the screw rod 3 or the second clamping seat 2, so that the second clamping seat 2 is clamped on the bolt 8 of the flange 7 at the other side of the valve 9. Of course, the installation step of the tool is not limited to this, and in other embodiments, the first clamping seat 1 may be first clamped on the bolt 8 of the flange 7 on one side of the valve 9, the second clamping seat 2 may be clamped on the bolt 8 of the flange 7 on the other side of the valve 9, then the screw rod 3 may sequentially pass through the second clamping seat 2 and the first clamping seat 1 while rotating the screw rod 3, and the first section 31 of the screw rod 3 may pass through the first clamping seat 1 and the fixing pad 5 and then be connected to the fixing nut 4.
The operation steps of using the flange dismounting tool to dismount and mount the flange are as follows:
Firstly, the first section 31, the second section 32 and the third section 33 of the screw rod 3 sequentially pass through the first through hole 201 of the second clamping seat 2 until the second clamping seat 2 is positioned on the third section 33 of the screw rod 3, and then the first section 31 and the second section 32 of the screw rod 3 sequentially pass through the first through hole 101 of the first clamping seat 1.
The first section 31 of the screw rod 3 firstly passes through the first through hole 101 of the first clamping seat 1 and then passes through the second through hole 501 of the fixed backing plate 5, so as to be conveniently connected with the fixed nut 4. The fixing base plate 5 is abutted against the side wall of the first clamping seat 1 by tightening the fixing nut 4.
Two sides of the valve 9 are connected with two oil pipes 6 through two groups of flanges, two flange plates 7 of each group of flanges are connected through bolts 8, and the first groove 102 of the first clamping seat 1 is clamped on the bolts 8 between the two flange plates 7 of one group.
The second cartridge 2 is then adjusted so that the second cartridge 2 is clamped by the first recess 202 onto the bolts 8 between the two flanges 7 of the other set.
The screw rod 3 is rotated anticlockwise, and the second clamping seat 2 and the third section 33 of the screw rod 3 are connected through right threads, so that the second clamping seat 2 of the second clamping seat 2 moves towards the direction far away from the first clamping seat 1, the flange 7 connected with the oil pipe 6 is pushed against the second clamping seat, and the two flange 7 clamping the second clamping seat 2 are opened.
The tool is taken down, the direction is turned, the screw rod 3 is rotated clockwise, the second clamping seat 2 moves towards the direction close to the first clamping seat 1, the distance between the first clamping seat 1 and the second clamping seat 2 is adjusted, the second clamping seat 2 is clamped between the two flange plates 7 of the other group, the first clamping seat 1 is clamped between the two flange plates 7 which are already propped open, the screw rod 3 is rotated anticlockwise again, the two flange plates 7 of the second clamping seat 2 are propped open, and the propping operation of the two flange plates 7 is completed.
After all the flange plates 7 are inspected and maintained, the screw rod 3 is rotated anticlockwise again, and the distance between the first clamping seat 1 and the second clamping seat 2 is adjusted, so that the first clamping seat 1 is clamped on a bolt 8 on the outer side of one flange plate 7 connected with one oil pipe 6, and the second clamping seat 2 is clamped on a bolt 8 on the outer side of the other flange plate 7 connected with the other oil pipe 6.
the screw rod 3 is rotated clockwise, so that the first clamping seat 1 and the second clamping seat 2 are close to the middle, the two flange plates 7 which are farthest away from the valve 9 and on the outermost side move towards the direction close to the valve 9, and the contraction operation of the two flange plates is completed.
The above description is only illustrative of the present invention and should not be construed as limiting the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A flange dismounting tool is characterized by comprising a first clamping seat, a second clamping seat, a screw rod and a fixing nut, wherein,
The screw rod comprises a first section, a second section and a third section, wherein the first section is positioned at one end of the screw rod and is provided with an external thread, the second section is a smooth cylinder and is adjacent to the first section, and the third section is provided with an external thread and is adjacent to the second section;
Any one of the first clamping seat and the second clamping seat comprises a main body part and a clamping claw part, the main body part is cuboid, the main body part is provided with a first through hole which penetrates through the main body part, the inner wall of the first through hole of the second clamping seat is provided with a thread, the second clamping seat is in threaded connection with the third section of the screw rod through the first through hole, the second clamping seat is suitable for moving on the third section of the screw rod, the inner wall of the first through hole of the first clamping seat is a smooth surface, the first section and the second section of the screw rod are suitable for passing through, the clamping claw part is vertical to the axial direction of the first through hole of the main body part, a first groove is formed in the direction, perpendicular to the axial direction of the first through hole, of the clamping claw part, and the first groove is suitable for clamping the first clamping seat and the second clamping seat on a bolt of the flange plate;
The fixing nut is connected with the first section of the screw rod penetrating through the first clamping seat and is suitable for fixedly connecting the screw rod with the first clamping seat.
2. The flange dismounting tool according to claim 1, wherein the claw portion is integral with the main body portion.
3. A flange dismounting tool according to claim 2, wherein a thickness of the claw portion in an axial direction of the first through hole is smaller than a gap between two butted flanges.
4. The flange dismounting tool according to claim 1, wherein a length of the second section of the lead screw is equal to a length of the first through hole of the first cartridge.
5. The flange dismounting tool according to claim 1, wherein a diameter of the first section of the lead screw is smaller than a diameter of the second section, and the diameter of the second section is smaller than a diameter of the third section.
6. The flange dismounting tool according to claim 1 or 5, wherein the diameter of the first through hole of the first clamping seat is larger than the diameter of the second section of the screw rod and smaller than the diameter of the third section.
7. The flange dismounting tool according to claim 1, further comprising a fixing pad, wherein a second through hole is formed in the fixing pad, the diameter of the second through hole is smaller than the outer diameter of the fixing nut and larger than the diameter of the first section of the lead screw, and the first section of the lead screw penetrates through the first through hole of the first clamping seat and the second through hole of the fixing pad to be in threaded connection with the fixing nut.
8. The flange disassembly tool of claim 1, wherein the external threads of the first and third sections of the lead screw are right-handed threads.
9. The flange dismounting tool according to claim 1, wherein the first groove is arc-shaped and has a depth gradually increasing in a direction approaching the main body portion.
10. a flange dismounting tool according to claim 1, wherein the length of the wire rod is greater than the furthest distance between two sets of flanges on either side of the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821879733.7U CN209755095U (en) | 2018-11-14 | 2018-11-14 | Flange dismounting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821879733.7U CN209755095U (en) | 2018-11-14 | 2018-11-14 | Flange dismounting tool |
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| Publication Number | Publication Date |
|---|---|
| CN209755095U true CN209755095U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821879733.7U Active CN209755095U (en) | 2018-11-14 | 2018-11-14 | Flange dismounting tool |
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| CN (1) | CN209755095U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515888A (en) * | 2020-05-27 | 2020-08-11 | 中国南方电网有限责任公司超高压输电公司大理局 | Concatenation formula respirator assembly and disassembly tools |
| CN114012669A (en) * | 2021-12-17 | 2022-02-08 | 大连长丰实业总公司 | Disassembling and assembling device for pump box assembly of airplane |
-
2018
- 2018-11-14 CN CN201821879733.7U patent/CN209755095U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515888A (en) * | 2020-05-27 | 2020-08-11 | 中国南方电网有限责任公司超高压输电公司大理局 | Concatenation formula respirator assembly and disassembly tools |
| CN114012669A (en) * | 2021-12-17 | 2022-02-08 | 大连长丰实业总公司 | Disassembling and assembling device for pump box assembly of airplane |
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