CN2305668Y

CN2305668Y - Improved driving member for pressure meter

Info

Publication number: CN2305668Y
Application number: CN 97238476
Authority: CN
Inventors: 吴清祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-20
Filing date: 1997-06-29
Publication date: 1999-01-27
Anticipated expiration: 2007-06-29

Abstract

The utility model relates to an improved transmission member for a pressure meter. The pressure meter mainly comprises a bottom seat, a surface and a transmission assembly which mainly comprises a seat body, a piston, a transmission rod, a spring and a gear. The utility model is characterized in that by utilizing the outlet pressure at the end of an air inlet guide tube, a piston is driven; the piston pushes the transmission rod and a connected rack bar to make transmission; the rack bar is engaged with the gear to drive an indicating pointer to indicate the pressure, and the indicating pointer makes the movement whose tendency returns to zero with a spring. Through the simplicity and the convenience of a component assembly, the utility model reaches the effects that the production cost is lowered, an article is not easy to damage in the process of delivery, and precision and accuracy are easy to maintain.

Description

Improved pressure table transmission component

The utility model belongs to a kind of interior transmission component of manometric table of measuring vessel fluid pressure.

Tensimeter is applied to various containers, no matter be closed or open, tensimeter all has the function of the container inner pressure of measuring, and can provide the user to know to some extent indirectly for the fluid storage in the container, tensimeter has the warning function of a security to the container inner fluid simultaneously, can learn the degree of the spreading pressure of present container inner fluid by tensimeter as nationality, make people prevention high temperature when being connected to container for avoiding gas flaring to cause the explosion accident generation, tensimeter was both popularized, and used very extensive.

The tensimeter of commonly using is mainly a kind of Bu Erdeng pipe (being translated into Ba Dunguan again) formula tensimeter, its transmission component system culvert is located between base and surface, utilize and pour into the gas of desiring measuring pressure in the air induction conduit, after feeding the Bu Erdeng pipe, because the Bu Erdeng pipe is terminal for sealing, the gas that nationality pours into makes the Bu Erdeng tube swelling, the volume elementary errors of mat expansion drives a highly sensitive driving member, driving member also connects a gear, to drive the gear of pointer end binding, reaching the purpose that predicts pressure, and mat one spring orders about pointer and becomes to making zero in the step-down state.By the start of above-mentioned traditional Bu Erdeng tubular type tensimeter, thereby can canvass its structure, and then know the shortcoming of its structure clearly.

1., this kind tensimeter, the Bu Erdeng of its main element pipe must be rolled, be rolled by copper sheet, manufacturing process is comparatively difficult.

2., its driving member system is the thin part of transmission that cooperates the bow shape to link by several, it is in conjunction with all finishing with machinery, manufacturing process is also for being difficult for.

3., Bu Erdeng pipe, with scolding tin and air induction conduit and drive link solder bond, its weld is difficult to overcome because of technology its biend respectively, and the time leak generation is arranged, and cause pressure release, influence the pressure measurement accuracy.

4., aforementioned 1., 2. because member and assemble numerous and diversely, cost of manufacture is also higher.

5., aforementioned 1., 2. because the member contact is a lot of, the spoilage of transporting in the process is also high.

Therefore have that in addition the ameliorator is numerous, so on the whole difficulty is taken off the nest and is studied carefully, the tensimeter that film (drum) chip of one meaning is arranged again, it is the swollen protruding film of pressure (drum) sheet that utilizes air inlet, make the diaphragm center projections and compel to drive post heart driving pointer connecting rod, and the terminal turn pointer fork of mat screw rod bar, also mat one spring makes zero pointer under the step-down state simultaneously.And this kind tensimeter also still has partly disappearance.Promptly 1., diaphragm bottom is a closed space, when tensimeter elastic fatigue or misalignment, be difficult to proofread and correct and make zero.2., on the manufacturing technology, this kind commonly used, also many groups by mechanical type are upright, assembling still is complicated.3., the manufacture difficulty height, cost is increased, diminish economic benefit.4., the collision of transporting process also easily causes finished product to damage.

The purpose of this utility model is at the existing above-mentioned deficiency of existing tensimeter transmission component, designs a kind of simple in structurely, make, assembling easily, the tensimeter transmission component of the higher and low cost of manufacture of sensitivity and degree of accuracy.

Main technical schemes of the present utility model is as follows:

A kind of improved pressure table transmission component is located at the interlayer between tensimeter surface and base, is the main member of sensing, transmission and reaction pressure in the tensimeter, and it mainly comprises a pedestal, a piston, a drive link, a spring and gear, tooth bar, wherein:

Pedestal one side is a hollow posts, and extends into the upper and lower symmetrical sheet that without exception is symmetrical Contraband shape in the cylinder tangential direction; Hollow posts one end face is the envelope wall, runs through a wireway between the envelope wall, and the other end is spiral shell front cover nut then;

Go up one appropriate location, symmetrical sheet surface wear one with the gear hole of gear matched, a shallow slot caves in following symmetrical sheet medial surface corresponding gear hole;

Gear is included in by the gear hole of last symmetrical sheet, and it extends axially the pointer that bar upwards connects the surface, and to the next shallow slot that is absorbed in, sprocket itself then meshes with the groove of the terminal tooth bar vertical component effect that is connected of drive link;

The end of drive link is a right cylinder, and the footpath is slightly less than footpath within the hollow posts outside the right cylinder, just fills in the hollow posts; The end face of drive link body extends axially a body of rod; This body of rod rear portion is a screw thread, and screw thread is screwed into the set screw of tooth bar transverse part and regulates the degree of depth;

The spring culvert is placed in drive link body of rod outer rim, is located in the hollow posts, is subjected to the right cylinder end face clipping of hollow posts nut medial surface and drive link;

Piston end surface encloses with glue lobe frame and is spiral shell mouthful shape, is located between the right cylinder of Feng Biyu drive link of hollow posts, and hydraucone is towards the wireway end.

The utlity model has following advantage:

(1), the structure of each assembly is simple and easy, and assembling is convenient, the overwhelming majority's member all can be assembled under free-hand operation and finish.Thereby 1. save to make the worker, the time.2. reduce manufacturing a finished product, meet economic benefit.

(2), how the member of the utility model because of not installing with mechanism, therefore, the contact of leading because of the precision assembling in the process of transporting is more, links fragility, situations such as anti-vulnerability are difficult for taking place in the utility model.

(3), the utility model is difficult welding manner assembling, reduces the possibility of the lyriform pore generation that causes because of welding, more easily keep for the sensitivity and the accuracy of instrument.

(4), the utility model is at the screw thread at the body of rod rear portion of drive link, can be in the screw of the transverse part of tooth bar the mat spiral shell regulate and the calibrating (base measuring) pressure table is being experienced all sorts of accuracy under the use.

Below in conjunction with accompanying drawing the utility model is described:

Fig. 1 is the three-dimensional exploded view of the utility model

Fig. 2 is the utility model action synoptic diagram

Fig. 3 is the A-A schematic cross-section of Fig. 2

See also shown in Figure 1ly, the utility model is a kind of tensimeter transmission component improved structure, is located at the interlayer of 31 of tensimeter surface 32 and bases, is the main member of sensing, transmission and reaction pressure in the tensimeter, wherein:

Transmission component mainly comprises a pedestal 34, a piston 35, a drive link 36, a spring 37 and a gear 38 wherein:

Pedestal 34 1 sides are hollow posts 341, and hollow posts 341 tangential directions extend into the upper and lower symmetrical sheet 342,343 that without exception is the general one-tenth of symmetry Contraband shape; Hollow posts 341 1 end faces run through a wireway 345 for envelope wall 344,344 on wall of envelope, and the other end is spiral shell front cover nut 346 then.

Go up symmetrical sheet 342 surperficial appropriate locations and wear the adjacent and identical gear hole 347 of a size; Down symmetrical sheet 343 medial surface corresponding gear holes 347 depressions, one shallow slot 348.

Gear 38 is included in by the gear hole 347 of last symmetrical sheet 342, and it extends axially the pointer 321 that bar 381 upwards connects surface 32, and to the next shallow slot 348 that is absorbed in, gear 38 itself then is subjected to screw thread 391 transmissions of the tooth bar 39 of drive link 36 terminal bindings;

Drive link 36, its end are a right cylinder 361, and its right cylinder 361, external diameter are slightly less than footpath within the hollow posts 341, and can just fill in the hollow posts 341, and right cylinder 361 ends also extend axially a body of rod 362; These body of rod 362 rear portions are screw thread 363, the body of rod 362 terminal tooth bars 39 that link, these tooth bar 39 transverse parts 392 medial surfaces are established a screw 394, can be screwed into and regulate the degree of depth for the screw thread 363 of portion after the body of rod 362 makes its correction and makes zero, and vertical component effect 393 outsides of tooth bar 39 are groove 391, and this groove 391 can be the moving state of biography (nibbling) with gear 38.

Spring 37, culvert is placed in the body of rod 362 outer rims of drive link 36, and is located in the hollow posts 341, is subjected to the clipping of right cylinder 361 end faces of nut 346 medial surfaces and drive link 36;

Piston 35, one end face encloses with glue lobe 351 frames and is bell mouth shape, is located at 361 on the right cylinder of the envelope wall 344 of hollow posts 341 and drive link 36, and hydraucone is towards wireway 345 ends, bear the pressure of wireway 345 ventilations, stretch through tensimeter base 31 behind this wireway 345 and go into.

The start situation of the utility model, see also Fig. 2 and shown in Figure 3, when the gas for the treatment of pressure measurement is entered by the wireway 345 that base 31 stretches through, owing to irritate to piston 35, after the hydraucone that 351 frames of tail glue lobe enclose is bearing pressure, advance to the right cylinder 361 of drive link 36, relatedly make tooth bar 39 displacements, the groove 391 of tooth bar 39 is nibbled moving gear 38 then, makes the pointer 321 of extension rod 381 rotating surfaces 32.Thereby, can show the degree of pressure by pointer 321.

And descend when pressure, spring 37 is because elastic reaction forces drive link 36 to push back then, and and then tooth bar 39 pushed back, and drive pointer 321 trends and make zero.

The screw thread 363 at drive link 36 rear portions is done a spiral adjustment in the visual degree of correction in screw 394 holes of tooth bar 39 transverse parts 392.

Claims

A kind of improved pressure table transmission component, be located at the interlayer between tensimeter surface and base, main member for sensing, transmission and reaction pressure in the tensimeter, it is characterized in that: it mainly comprises a pedestal [34], a piston [35], a drive link [36], a spring [37] and gear [38], tooth bar [39], wherein:

Pedestal [34] one sides are hollow posts [341], and extend into the upper and lower symmetrical sheet [342,343] that without exception is symmetrical Contraband shape in the cylinder tangential direction; Hollow posts [341] one end faces are envelope wall [344], run through a wireway [345] between the envelope wall, and the other end is spiral shell front cover nut [346] then;

Go up the surperficial appropriate location of symmetrical sheet [342] and wear a gear hole [347] that cooperates with gear [38], following symmetrical sheet [343] medial surface corresponding gear hole [347] depression one shallow slot [348];

Gear [38] is included in by the gear hole [347] of last symmetrical sheet [342], it extends axially the pointer [321] that bar [381] upwards connects surface [32], to the next shallow slot [348] that is absorbed in, sprocket itself then meshes with the groove [391] of terminal tooth bar [39] vertical component effect [393] that is connected of drive link [36];

The end of drive link [36] is a right cylinder [361], and the footpath is slightly less than footpath within the hollow posts [341] outside the right cylinder [361], just fills in the hollow posts [341]; The end face of drive link [36] body extends axially a body of rod [362]; This body of rod [362] rear portion is screw thread [363], and screw thread [363] is screwed into the set screw [394] of tooth bar [39] transverse part [392] and regulates the degree of depth;

Spring [37] culvert is placed in drive link [36] body of rod [362] outer rim, is located in the hollow posts [341], is subjected to right cylinder [361] the end face clipping of hollow posts nut [346] medial surface and drive link [36];

Piston [35] one end faces enclose with glue lobe [351] frame and are spiral shell mouthful shape, are located between the right cylinder [361] of the envelope wall [344] of hollow posts [341] and drive link [36], and hydraucone is towards wireway [345] end.