CN204200565U - A kind of diaphragm pump piston bar locking apparatus - Google Patents
A kind of diaphragm pump piston bar locking apparatus Download PDFInfo
- Publication number
- CN204200565U CN204200565U CN201420628796.0U CN201420628796U CN204200565U CN 204200565 U CN204200565 U CN 204200565U CN 201420628796 U CN201420628796 U CN 201420628796U CN 204200565 U CN204200565 U CN 204200565U
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- China
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- cylinder sleeve
- load nut
- bar
- diaphragm pump
- top cover
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Abstract
Diaphragm pump piston bar locking apparatus belongs to a setting tool technical field for diaphragm pump piston bar and Jie's bar, and specifically, the utility model relates to a kind of diaphragm pump piston bar locking apparatus.The utility model provides a kind of easy to use, and anti-loosing effect is good, the diaphragm pump piston bar locking apparatus that pretightening force is strong.Of the present utility modelly to be characterised in that: between the first pre-load nut and the second pre-load nut, be provided with cylinder sleeve, the cylinder core coordinated with cylinder sleeve is provided with in the side of cylinder sleeve, be provided with hydraulic pressure cavity between cylinder sleeve and cylinder core, described cylinder sleeve be provided with the pouring orifice being communicated with hydraulic pressure cavity; The opposite side of described cylinder sleeve is provided with top cover, and described top cover contacts with the second pre-load nut, and described cylinder core contacts with the first pre-load nut; The piston rod of described top cover is provided with locknut by screw thread; Described locknut contacts with Jie's bar; Described top cover is provided with opening corresponding to locknut.
Description
Technical field
The utility model belongs to the setting tool technical field of diaphragm pump piston bar and Jie's bar, and specifically, the utility model relates to a kind of diaphragm pump piston bar locking apparatus.
Background technique
The connecting structure of diaphragm pump piston bar and Jie's bar belongs to two elongate rod rigid joint, alternate load is born in reciprocatory movement, many employing pushing tow nut patterns in the past, its structure as shown in Figure 3, first piston rod 11 is threaded with Jie's bar 3, then pushing tow nut 14 is tightened, finally tighten pushing tow bolt 13 again, thus complete the pretension of Jie's bar 3 and piston rod 11 and locking.
This structure anti-loosing effect is poor, easily occurs connecting loosening, and causes two rod member disalignments, affects Power output, produce noise, cause rod fracture.
Summary of the invention
The utility model is exactly for the problems referred to above, and provide a kind of easy to use, anti-loosing effect is good, the diaphragm pump piston bar locking apparatus that pretightening force is strong.
For reaching above-mentioned purpose of the present utility model, the utility model adopts following technological scheme: the utility model comprises piston rod and Jie's bar, the end of piston rod is connected with Jie's bar by screw thread, it is characterized in that: piston rod is provided with the first pre-load nut by screw thread, Jie's bar is provided with the second pre-load nut by screw thread, cylinder sleeve is provided with between first pre-load nut and the second pre-load nut, the cylinder core coordinated with cylinder sleeve is provided with in the side of cylinder sleeve, be provided with hydraulic pressure cavity between cylinder sleeve and cylinder core, described cylinder sleeve be provided with the oil hole 7 being communicated with hydraulic pressure cavity; The opposite side of described cylinder sleeve is provided with top cover, and described top cover contacts with the second pre-load nut, and described cylinder core contacts with the first pre-load nut; The piston rod of described top cover is provided with locknut by screw thread; Described locknut contacts with Jie's bar; Described top cover is provided with opening corresponding to locknut.
The beneficial effects of the utility model: 1, the locking mechanism of pushing tow nut form of the prior art is improved to the hydraulic pressure locking apparatus that can suppress by the utility model, during use, after suppressing by hand pump, increase the externally threaded amount of tension of piston rod, thus generation pretightening force, make it in reciprocatory movement, have good locking effect.
2, the utility model is after suppressing tightening, can realize the tightening effect of long period, avoids connecting the repeatedly maintenance after loosening and again locking, and maintenance frequency is few, and continuous running rate is high, improves this power output efficiency of barrier film.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the structural representation of existing locking apparatus.
1 be cylinder sleeve in accompanying drawing, 2 be locknut, 3 be top cover for Jie's bar, 4 is the second pre-load nut, 5,6 be hydraulic pressure cavity, 7 be plug screw, 9 be piston rod for cylinder core, 10 is the first pre-load nut, 11,12 be opening, 13 be pushing tow nut of the prior art, 14 be pushing tow bolt of the prior art for oil hole 7,8.
Embodiment
The utility model comprises piston rod 11 and Jie's bar 3, the end of piston rod 11 is connected with Jie's bar 3 by screw thread, it is characterized in that: piston rod 11 is provided with the first pre-load nut 10 by screw thread, Jie's bar 3 is provided with the second pre-load nut 4 by screw thread, cylinder sleeve 1 is provided with between first pre-load nut 10 and the second pre-load nut 4, the cylinder core 9 coordinated with cylinder sleeve 1 is provided with in the side of cylinder sleeve 1, be provided with hydraulic pressure cavity 6 between cylinder sleeve 1 and cylinder core 9, described cylinder sleeve 1 be provided with the oil hole 7 being communicated with hydraulic pressure cavity 6; The opposite side of described cylinder sleeve 1 is provided with top cover 5, and described top cover 5 contacts with the second pre-load nut 4, and described cylinder core 9 contacts with the first pre-load nut 10; The piston rod 11 of described top cover 5 is provided with locknut 2 by screw thread; Described locknut 2 contacts with Jie's bar 3; Described top cover 5 is provided with opening 12 corresponding to locknut 2.
Both sides corresponding to hydraulic pressure cavity 6 between described cylinder sleeve 1 and cylinder core 9 are provided with O-ring seal and back-up ring.
Described oil hole 7 arranges at least two; Plug screw 8 is provided with in oil hole 7.By arranging multiple oil hole 7, carry out oiling by an oil hole 7, another oil hole 7 is for venting; Easy to use.
Below in conjunction with accompanying drawing, one-off process of the present utility model is described: first the first pre-load nut 10 is threaded to piston rod 11 screw thread innermost end, then cylinder core 9 is loaded, and two ends, left and right O-ring seal and back-up ring are put in the corresponding seal groove of cylinder core 9, again cylinder sleeve 1 is placed in cylinder core 9 outside to install, outside locknut 2 precession piston rod 11 screw thread, now piston rod 11 and the part installation of upper tightening device section thereof.
Next the second pre-load nut 4 is installed on Jie's bar 3 outside thread place, then piston rod 11 and upper tightening apparatus parts thereof are screwed into Jie's bar 3 internal thread together.
When suppressing, take off place's plug screw 8, Bonding pressure pump, ensure that another place's plug screw 8 is positioned at cylinder sleeve 1 the topmost part as vent hole, before giving pressure, take off plug screw 8, when having fluid to flow out in screw, reinstalled by plug screw 8 and tighten, Password-Enabled packing material improves sealing if desired.Certain tensile buckling amount can be produced to thread section between piston rod 11 liang of fastening nuts after suppressing, now use spanner for the locknut 2 outside tight piston rod 11, make it near Jie's bar 3.
Be understandable that, above about specific descriptions of the present utility model, the technological scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (3)
1. a diaphragm pump piston bar locking apparatus, comprise piston rod (11) and Jie's bar (3), the end of piston rod (11) is connected with the bar (3) that is situated between by screw thread, it is characterized in that: piston rod (11) is provided with the first pre-load nut (10) by screw thread, Jie's bar (3) is provided with the second pre-load nut (4) by screw thread, cylinder sleeve (1) is provided with between first pre-load nut (10) and the second pre-load nut (4), the cylinder core (9) coordinated with cylinder sleeve (1) is provided with in the side of cylinder sleeve (1), hydraulic pressure cavity (6) is provided with between cylinder sleeve (1) and cylinder core (9), described cylinder sleeve (1) is provided with the oil hole (7) being communicated with hydraulic pressure cavity (6), the opposite side of described cylinder sleeve (1) is provided with top cover (5), and described top cover (5) contacts with the second pre-load nut (4), and described cylinder core (9) contacts with the first pre-load nut (10), the piston rod (11) of described top cover (5) is provided with locknut (2) by screw thread, described locknut (2) contacts with Jie's bar (3), described top cover (5) is provided with opening (12) corresponding to locknut (2).
2. a kind of diaphragm pump piston bar locking apparatus according to claim 1, is characterized in that: be provided with O-ring seal and back-up ring corresponding to the both sides of hydraulic pressure cavity (6) between described cylinder sleeve (1) and cylinder core (9).
3. a kind of diaphragm pump piston bar locking apparatus according to claim 1, is characterized in that: described oil hole (7) arranges at least two; Plug screw (8) is provided with in oil hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420628796.0U CN204200565U (en) | 2014-10-28 | 2014-10-28 | A kind of diaphragm pump piston bar locking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420628796.0U CN204200565U (en) | 2014-10-28 | 2014-10-28 | A kind of diaphragm pump piston bar locking apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204200565U true CN204200565U (en) | 2015-03-11 |
Family
ID=52658529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420628796.0U Active CN204200565U (en) | 2014-10-28 | 2014-10-28 | A kind of diaphragm pump piston bar locking apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204200565U (en) |
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2014
- 2014-10-28 CN CN201420628796.0U patent/CN204200565U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |