CN202037442U - Assembling and measuring tool for bolt of evaporator sealing cover plate in hydraulic test - Google Patents

Assembling and measuring tool for bolt of evaporator sealing cover plate in hydraulic test Download PDF

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Publication number
CN202037442U
CN202037442U CN2011200934906U CN201120093490U CN202037442U CN 202037442 U CN202037442 U CN 202037442U CN 2011200934906 U CN2011200934906 U CN 2011200934906U CN 201120093490 U CN201120093490 U CN 201120093490U CN 202037442 U CN202037442 U CN 202037442U
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CN
China
Prior art keywords
bolt
frock
evaporimeter
utility
assembling
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.)
Expired - Fee Related
Application number
CN2011200934906U
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Chinese (zh)
Inventor
江才林
周伟
吴新华
刘丹山
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Shanghai Electric Nuclear Power Equipment Co Ltd
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Shanghai Electric Nuclear Power Equipment Co Ltd
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Priority to CN2011200934906U priority Critical patent/CN202037442U/en
Application granted granted Critical
Publication of CN202037442U publication Critical patent/CN202037442U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an assembling and measuring tool for a bolt of an evaporator sealing cover plate in a hydraulic test. The bolt comprises a head part and a screw rod; the screw rod comprises a cylindrical outer sleeve with external threads, and a core rod arranged in the outer sleeve; one end of the core rod is connected with the head part; and the assembling and measuring tool comprises a hydraulic tensioner and a bolt measuring device. The utility model adopts the working principle that a pre-tightening force is converted into the residual elongation of the bolt according to the material characteristics of the bolt and a direct test on whether the eventual elongation of the tightened bolt is within a preset residual elongation range is carried out to judge whether the bolt is tightened, and adopts the hydraulic tensioner to stretch the bolt under a set pressure, so as to achieve the purpose that the bolt is reliably mounted on the sealing cover plate and enable the bolt to be stressed more uniformly; and besides, in the utility model, the bolt measuring device facilitates the measurement of elongation of the bolt in any state, thereby effectively ensuring the bolt tightening accuracy.

Description

A kind of bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board
Technical field
The utility model relates to mechanical assembly tool, relates in particular to a kind of bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board.
Background technology
As everyone knows, general bolt is tightened and can be realized by craft or torque spanner method such as directly tighten, and when evaporimeter hydraulic pressure is tested, the bolt pretightening of evaporimeter seal cover board is bigger, therefore can not directly tight a bolt by manual, in addition, it mainly is the pretightning force of bolt when tightening that the examination that bolt is tightened requires, and the inconvenient direct measurement and control of pretightning force, this shows that above-mentioned conventional bolt assembly tool existence makes bolt strained inhomogeneous, shortcomings such as the bad control of screwing force, therefore, press at present the evaporimeter seal cover board in the water pressure test, the assembly tool of its bolt improves.
The utility model content
In order to solve the problem that above-mentioned prior art exists, the utility model aims to provide a kind of bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board, when being implemented in the water pressure test, to the reliable installation of bolt on the evaporimeter seal cover board.
A kind of bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board described in the utility model, described bolt comprises head and screw rod, this screw rod comprise have externally threaded cylindrical jacket and be arranged on this overcoat in and the plug that is connected with described head of an end, described alignment measurement instrument comprises a hydraulic elongator and a bolt measurement mechanism
Described hydraulic elongator comprises that a bolt tension frock and has the jack-up frock of hydraulic pump, wherein, described bolt tension frock comprises that a base block and is positioned at this base block bottom surface and integrated with it cylinder, so that the cross section of described bolt tension frock is the T font, the bottom surface of described cylinder is provided with a through hole, and this through-hole wall is provided with the screw thread that one section overcoat outer rim with described bolt is complementary, so that described bolt tension frock is connected with described bolting, described jack-up frock is sleeved on described cylinder outer rim, and its end face contacts with the bottom surface of described base block;
Described bolt measurement mechanism comprises the sleeve that a meter and that has measuring staff and reading mechanism is set in described measuring staff outer rim and fixedlys connected with it, and the external diameter of this sleeve is less than the internal diameter of through hole on the described bolt tension frock, so that this sleeve stretches in the described through hole, and press the overcoat bottom surface of putting at described bolt.
In the above-mentioned bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board, the inner chamber of described sleeve is step-like.
Owing to adopted above-mentioned technical solution, the utility model adopts the residual elongation amount that pretightning force is scaled bolt according to the material behavior of bolt material, and whether the final elongation of the bolt when tightening by direct examination is in the scope of default residual elongation amount, with the operation principle of confirming whether bolt is tightened, by hydraulic elongator tensile bolt under setting pressure, thereby the reliable installation of bolt on the realization seal cover board, and can make bolt strained more even; In addition, the bolt measurement mechanism in the utility model can be convenient to the measurement of bolt elongation under each state, thereby can effectively guarantee the accuracy that bolt is tightened.
Description of drawings
Fig. 1 is the scheme of installation of hydraulic elongator in a kind of bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board of the utility model;
Fig. 2 is the structural representation of bolt tension frock in a kind of bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board of the utility model;
Fig. 3 is the original state figure of bolt measurement mechanism in a kind of bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board of the utility model;
Fig. 4 is the working state figure of bolt measurement mechanism in a kind of bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board of the utility model;
Fig. 5 is the assembling schematic diagram of bolt and evaporimeter seal cover board.
The specific embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
See also Fig. 1 to Fig. 5, the utility model, it is a kind of bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board, bolt 1 comprises head (not shown) and screw rod, this screw rod comprise have externally threaded cylindrical jacket 11 and be arranged on this overcoat 11 in and the plug 12 that is connected with head of an end.Alignment measurement instrument of the present utility model comprises hydraulic elongator 3 and bolt measurement mechanism 5, wherein:
Hydraulic elongator 3 comprises that a bolt tension frock 21 and has the jack-up frock 22 of hydraulic pump (not shown), wherein, bolt tension frock 21 comprises that a base block 211 and is positioned at these base block 211 bottom surfaces and integrated with it cylinder 212, so that the cross section of bolt tension frock 21 is the T font, the bottom surface of cylinder 212 is provided with a through hole 213, and these through hole 213 inwalls are provided with the screw thread that one section overcoat 11 outer rim with bolt 1 is complementary, so that bolt tension frock 21 is fixedlyed connected with bolt 1, jack-up frock 22 is sleeved on cylinder 212 outer rims, and its end face contacts with the bottom surface of base block 211.
Bolt measurement mechanism 5 comprises the sleeve 53 that a meter and that has measuring staff 51 and reading mechanism 52 is set in measuring staff 51 outer rims and fixedlys connected with it, and the inner chamber of sleeve 53 is step-like, its external diameter is less than the internal diameter of through hole 213 on the bolt tension frock 21, so that this sleeve 53 stretches in the through hole 213, and press overcoat 11 bottom surfaces of putting at bolt 1.
Hydraulic elongator 3 in use, earlier with the cylinder 212 of bolt tension frock 21 with stretch out evaporimeter seal cover board 2 on the screw rod of bolt 1 of pilot hole fixedly connected, base block 211 by swivel bolt stretching frock 21 tentatively screws bolt 1, under the effect of hydraulic pump, pass through the progressively base block 211 of jack bolt stretching frock 21 of jack-up frock 22 again, thereby play the effect of stretching screw rod, behind the maximum stretching force that reaches setting, can finish the assembling of bolt 1 by tightening assembling nut 4, and can guarantee that its pretightning force reaches test requirements document.
Bolt measurement mechanism 5 is placed on part calibration block 54 surfaces earlier when original state, sleeve 53 bottom surfaces and measuring staff 51 bottoms are maintained an equal level, and reading mechanism 52 is returned to zero again; Bolt measurement mechanism 5 is in working order the time, sleeve 53 is stretched in the through hole 213 of bolt tension frock 21, make its pressure put or directly sleeve 53 is pressed screw jacket 11 bottom surfaces of putting at bolt 1 in overcoat 11 bottom surfaces of bolt 1, thereby measuring staff 51 is stretched in the overcoat 11, and withstand on plug 12 bottom surfaces, at this moment, the numerical value of reading mechanism 52 demonstrations is the distance between plug 12 bottom surfaces and overcoat 11 bottom surfaces.
The utility model needs to do earlier following preparation before use:
1, according to the stressing conditions of bolt 1 in the water pressure test, determine the bolt pretightening that bolt 1 is required, calculate the residual elongation amount of corresponding different bolt pretightenings then, the performance assessment criteria of whether tightening as bolt 1, simultaneously, according to residual elongation amount Δ l, calculate and, the maximum stretching force of hydraulic elongator 3 is set by the actual experiment correction;
2,, calculate the maximum elongation amount of bolt 1 according to elastic deformation force's (this elastic deformation force is intrinsic according to the material of bolt 1 and structure) of bolt 1;
3, by bolt measurement mechanism 5 measure when bolt 1 in original state following time, the initial distance dx between plug 12 bottom surfaces and overcoat 11 bottom surfaces, for given bolt 1, initial distance dx is a definite value.
The utility model in use, can be by establishment hydraulic elongator 3 pressurized operation schemes, make hydraulic elongator 3 progressively apply tensile force to the screw rod of bolt 1, until reaching maximum stretching force, make screw rod elongate the back by tightening assembling nut 4, bolt 1 is fixedlyed connected with evaporimeter seal cover board 2, so far, finish the assembling of a bolt 1; Repeat installation step, and according to applying equivalent tensile force for the bolt 1 that is positioned at some symmetric positions on the evaporimeter seal cover board 2, and the mode of tightening assembling nut 4 several times (can guarantee that each bolt 1 is stressed even, phenomenon such as prevent that stress from concentrating), until the assembling of finishing all required bolts 1 of evaporimeter seal cover board 2.In this process, need by bolt measurement mechanism 5 measure when bolt 1 in extended state following time, stretching distance between plug 12 bottom surfaces and overcoat 11 bottom surfaces, and calculate the real-time elongation of bolt 1, and make this real-time elongation be no more than default maximum elongation amount, to be implemented in the amount of tension of control bolt 1 in the drawing process, guarantee that it is in the Elasticity scope; In addition, because bolt 1 is after losing tensile force, overcoat 11 meeting recovered part deformation, therefore, also need be at removal progressively to the tensile force of screw rod, after removing hydraulic elongator 3, measure when bolt 1 in end-state following time, the final distance between plug 12 bottom surfaces and overcoat 11 bottom surfaces, and calculate the final elongation of bolt 1, check this final elongation whether in the span of residual elongation amount, if it is qualified then to assemble, guaranteed that promptly the final elongation of bolt 1 meets the demands, otherwise, need ressemble.
Below embodiment has been described in detail the utility model in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the utility model according to the above description.Thereby some details among the embodiment should not constitute qualification of the present utility model, and the scope that the utility model will define with appended claims is as protection domain of the present utility model.

Claims (2)

1. bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board, be used to realize the assembling of described bolt and evaporimeter seal cover board, described bolt comprises head and screw rod, this screw rod comprise have externally threaded cylindrical jacket and be arranged on this overcoat in and the plug that is connected with described head of an end, it is characterized in that, described alignment measurement instrument comprises a hydraulic elongator and a bolt measurement mechanism
Described hydraulic elongator comprises that a bolt tension frock and has the jack-up frock of hydraulic pump, wherein, described bolt tension frock comprises that a base block and is positioned at this base block bottom surface and integrated with it cylinder, so that the cross section of described bolt tension frock is the T font, the bottom surface of described cylinder is provided with a through hole, and this through-hole wall is provided with the screw thread that one section overcoat outer rim with described bolt is complementary, so that described bolt tension frock is connected with described bolting, described jack-up frock is sleeved on described cylinder outer rim, and its end face contacts with the bottom surface of described base block;
Described bolt measurement mechanism comprises the sleeve that a meter and that has measuring staff and reading mechanism is set in described measuring staff outer rim and fixedlys connected with it, and the external diameter of this sleeve is less than the internal diameter of through hole on the described bolt tension frock, so that this sleeve stretches in the described through hole, and press the overcoat bottom surface of putting at described bolt.
2. the bolts assemblies survey tool that is used for water pressure test evaporimeter seal cover board according to claim 1 is characterized in that the inner chamber of described sleeve is step-like.
CN2011200934906U 2011-04-01 2011-04-01 Assembling and measuring tool for bolt of evaporator sealing cover plate in hydraulic test Expired - Fee Related CN202037442U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200934906U CN202037442U (en) 2011-04-01 2011-04-01 Assembling and measuring tool for bolt of evaporator sealing cover plate in hydraulic test

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200934906U CN202037442U (en) 2011-04-01 2011-04-01 Assembling and measuring tool for bolt of evaporator sealing cover plate in hydraulic test

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CN202037442U true CN202037442U (en) 2011-11-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103240588A (en) * 2013-04-23 2013-08-14 广州飞机维修工程有限公司 Hydraulic axial load device for airplane air circulator rotating components
CN108007782A (en) * 2017-12-29 2018-05-08 襄阳福瑞特机械制造有限公司 Bolt strength detection device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103240588A (en) * 2013-04-23 2013-08-14 广州飞机维修工程有限公司 Hydraulic axial load device for airplane air circulator rotating components
CN108007782A (en) * 2017-12-29 2018-05-08 襄阳福瑞特机械制造有限公司 Bolt strength detection device and method

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111116

Termination date: 20140401