The flange eyelid retractor
Technical field
The utility model relates to a kind of aid of maintenance flange, and concrete is the auxiliary maintenance tool that uses when changing flange gasket.
Background technology
It is the important connected mode of pipeline, pipe fitting or some equipment that flange connects, and its main feature is high, the good seal performance of convenient disassembly, intensity.The flange connection is to realize sealing function through the flange gasket that is clipped between two ring flanges, generally, is the sealing of guaranteeing to connect, and flange gasket is to need periodic replacement in use; Changed flange gasket in the past, and need to use crowbar, concrete is that the bolt that will connect between two ring flanges is earlier opened, and the tip of crowbar is inserted in the slit between two ring flanges; Press down the afterbody of crowbar, make the big space of appearance between the ring flange, the requirement of changing pad is satisfied in this space; Select the pad upper support then, extract crowbar out, or select another root crowbar; Again in the same way, two ring flanges separate fully the most at last, change pad; After having changed pad, the use supporter, also need to support by crowbar, supporter is taken away one by one; Many crowbars of use, need every crowbar is detached, at last two flange plate bolts are connected, change the flange gasket process and just finish.Can find out that by foregoing description when operation, especially the flange specification of replacing flange gasket is big, requires operating personnel must have bigger strength and just can accomplish, promptly labour intensity is bigger; In addition,, injure finger easily by a crashing object, have certain potential safety hazard in case crowbar supports shakiness in the operating process.
Summary of the invention
The purpose of the utility model provides a kind of flange eyelid retractor, uses this eyelid retractor to change flange gasket, need not can accomplish by any instrument, and operating process is simple, laborsaving, safety.
For realizing the foregoing invention purpose; The technical scheme that the application adopts is: the flange eyelid retractor, comprise upper supporting piece and lower support element, and wherein lower support element comprises spacer and lower connecting block; The surface of spacer is provided with circular locating hole, and the spacer horizontal welding is connected on the sidewall of lower connecting block; Said upper supporting piece comprises that support claw reaches upward contiguous block, and wherein support claw comprises pawl arm and calvus, and the calvus horizontal welding is connected on the end of pawl arm, and the upper end of pawl arm is welded on the sidewall of contiguous block; Above-mentioned spacer equates with the thickness of calvus, and treats that the gap is corresponding between the maintenance flange dish; Said going up on the contiguous block is provided with vertical tapped through hole, and vertical through hole is set on the lower connecting block; This eyelid retractor also comprises a connecting rod; This connecting rod is respectively cubic head, thread rod part and polished rod portion from top to bottom; Wherein thread rod part is connected with the vertical tapped through hole of last contiguous block, and polished rod portion is inserted in the vertical through hole of lower connecting block, and polished rod portion bottom is provided with jump ring; Last contiguous block is when connecting rod moves up and down, and spacer and calvus can be in the same horizontal plane side by side.
The pawl arm of preferred above-mentioned support claw is oblique support arm, and quantity is two, is symmetricly set on the contiguous block both sides, surrounds arc between two pawl arms and the last contiguous block sidewall, matches with the circular arc edge of ring flange; Calvus is two, and two calvus lay respectively at the both sides of spacer.
The opposite side of the fixed edge of preferred above-mentioned calvus and spacer is an arcuation.
Beneficial effect: the application's flange eyelid retractor, designed support claw mechanism, and utilized the function of jackscrew; To treat that the maintenance flange dish is strutted easily, reach the purpose of changing flange gasket, when having solved the operation of use crowbar; The problem that labour intensity is big, efficiency is low; And this instrument can form firm support, and is safe, is prone to skid when having avoided using crowbar hinder the problem of hand.In addition, this tool construction is simple, and is with low cost, has practicality widely.
Description of drawings
Fig. 1 is the structural representation of the application's flange eyelid retractor.
The specific embodiment
Below in conjunction with accompanying drawing the application is further described:
By shown in Figure 1: the flange eyelid retractor; Comprise upper supporting piece 1 and lower support element 2; Wherein lower support element 2 comprises spacer 21 and lower connecting block 22, and the surface of spacer 21 is provided with circular locating hole 23, and one side horizontal welding of spacer 21 is connected on the sidewall of lower connecting block 22; Its relative edge is an arcuation, and above-mentioned spacer 21 has the function of support claw.
Said upper supporting piece 1 comprises that support claw 11 reaches upward contiguous block 12, and wherein support claw 11 comprises pawl arm 111 and calvus 112, and pawl arm 111 is oblique support arms; Quantity is two, is symmetricly set on the both sides of contiguous block 12, can connect with welding sheet between the two pawl arms 111; Brace is welded on the sidewall of contiguous block 12 again, also can two pawl arms 111 directly be welded on the contiguous block, surrounds arc between two pawl arms and last contiguous block 12 sidewalls; Match with the arc edge of ring flange; Calvus is two, and one side horizontal welding of calvus 112 is connected on the end of pawl arm 111, and its relative edge is an arcuation.
Said going up on the contiguous block 12 is provided with vertical tapped through hole, and vertical through hole is set on the lower connecting block; Above-mentioned spacer 21 equates with the thickness of calvus 112, and treats that the gap is corresponding between the maintenance flange dish.
This eyelid retractor also comprises a connecting rod 3; This connecting rod 3 is respectively cubic head 31, thread rod part 32 and polished rod portion 33 from top to bottom; Wherein thread rod part 32 is connected with the vertical tapped through hole of last contiguous block 12; Polished rod portion 33 is inserted in the vertical through hole of lower connecting block 22, and polished rod portion 33 bottoms are provided with jump ring 34.
The said contiguous block 12 of going up moves up and down along connecting rod 3; When calvus 112 fell to spacer 21 at grade, two calvus 112 were symmetrically distributed in the both sides of spacer 21, so when support claw is applied active force; Two calvus can be evenly stressed, guarantees that the structure of eyelid retractor is firm.
Before using the application's eyelid retractor; Three that need to connect in the bolt of two ring flanges disassemble; Another unloads pine, then with the calvus 112 of the application's eyelid retractor fall to spacer 21 at grade, and calvus 112 and spacer 21 together inserted in the gap of two ring flanges; Notice that the locating hole 23 on the spacer 21 is relative up and down with one of them bolt hole on the ring flange; Next insert successively in the bolt hole and the locating hole on the lower support element 23 of ring flange with screwdriver, fixing this flange eyelid retractor prevents to skid off when eyelid retractor is stressed.With the be rotationally connected cubic head 31 of bar 3 of spanner, this moment, upper supporting piece 1 moved up along connecting rod 3, and lower support element 2 is fixed; Produced distance gradually between calvus 112 and the spacer 21; Because of calvus 112 and spacer 21 are stuck on the edge of two ring flanges,, be rotated further connecting rod 3 so two ring flanges also open thereupon; Until reaching enough gaps, clear up and change the pad operation at last; Replacing finishes, backward rotation connecting rod 3, to calvus 112 and spacer 21 at grade, this moment, two ring flanges were involutory again, extracted eyelid retractor out, put on bolt and fastening, whole operation finishes.