CN203948764U - A kind of cylinder feedback means - Google Patents
A kind of cylinder feedback means Download PDFInfo
- Publication number
- CN203948764U CN203948764U CN201420261873.3U CN201420261873U CN203948764U CN 203948764 U CN203948764 U CN 203948764U CN 201420261873 U CN201420261873 U CN 201420261873U CN 203948764 U CN203948764 U CN 203948764U
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- cylinder
- rod
- feedback
- piston
- feedback means
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- 210000004907 gland Anatomy 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
A kind of cylinder feedback means, this device is assemblied in cylinder bottom, described cylinder comprises cylinder lower piston and cylinder lower end cap, cylinder lower piston is connected with piston rod, this cylinder feedback means comprises feedback rod, connecting sleeve and extension rod, and wherein connecting sleeve is threaded connection the lower end that is fixed on cylinder lower piston, and one end of feedback rod is connected with connecting sleeve by connecting pin, and feedback rod is parallel with piston rod position, feedback rod can synchronously be moved up and down with cylinder lower piston.The utility model, by feedback means is connected on cylinder piston, has avoided valve rod to expose problem; By feedback means underlying, make compact overall structure simultaneously, be convenient to install, debug and observe indicating positions.
Description
Technical field
The utility model relates to a kind of feedback means, relates to especially a kind of feedback means for cylinder.
Background technique
When operation straight travel pneumatic actuating mechanism, under bleed pressure or spring-force driven dual, the upper and lower motion of its piston rod band ovable valve stem, for controlling the position of stem movement, need setting position feedback means, traditional feedback means is generally fixed on valve rod or cylinder piston rod top, but the use occasion of these two kinds of means of fixation is all restricted.Wherein, the mode that feedback means is fixed on to valve rod place only limits to valve rod and extraneous situation about communicating, and is unfavorable for valve rod to protect; The mode that feedback means is fixed on to piston rod upper end portion as shown in Figure 1, also the problem that exists feedback means installation position to set high, in Fig. 1, piston rod 23 is fixed on piston 22, feedback rod 21 is arranged on the top of piston rod 23, cause difficulty can to like this installation, debugging and observation, and because whole height increases, also increase the difficulty of packing and transportation.
Model utility content
In order to solve the problems of the technologies described above, the utility model provides a kind of cylinder feedback means, this device is assemblied in cylinder bottom, described cylinder comprises cylinder lower piston and cylinder lower end cap, cylinder lower piston is connected with piston rod, this cylinder feedback means comprises feedback rod, connecting sleeve and extension rod, wherein connecting sleeve is threaded connection the lower end that is fixed on cylinder lower piston, one end of feedback rod is connected with connecting sleeve by connecting pin, and feedback rod is parallel with piston rod position, feedback rod can synchronously be moved up and down with cylinder lower piston.
Preferably, the diameter of bore of connecting sleeve is greater than the external diameter of feedback rod, and configuration ground is for compensating processing and the assembly error between cylinder lower end cap and lower piston like this.
Preferably, feedback rod vertically, through cylinder lower end cap, is provided with stuffing box gland between feedback rod and cylinder lower end cap.
Preferably, between stuffing box gland and cylinder lower end cap, by being located at the 2nd O type circle arranging in stuffing box gland outer rim, realize excellent sealing.
Preferably, between feedback rod and stuffing box gland, by the O type circle arranging, realize excellent sealing on stuffing box gland inner edge.
Preferably, the inner edge of described stuffing box gland is provided with step, on described step, places guide ring.
Preferably, sealing cover is fixed by screws on cylinder lower end cap.
Preferably, the upper end portion of extension rod and the underpart of feedback rod are connected.
Preferably, in the underpart of feedback rod, be provided with groove, described groove inwall is provided with screw thread, and the outer wall of the upper end portion of extension rod is screw thread, described upper end portion can be deep in the groove of underpart of feedback rod and with this groove between be threaded.
Preferably, the underpart of this extension rod is connected with valve indicator cock by pilot pin provided thereon.
The utility model has the advantage of: (1) feedback means is connected on cylinder piston, has avoided valve rod to expose problem; (2) feedback means underlying, compact structure, is convenient to install, debugs and observe indicating positions, meanwhile, has reduced the height of complete equipment, instant packed transportation.
Accompanying drawing explanation
Fig. 1 is the scheme of installation of cylinder feedback means in prior art;
Fig. 2 is the structural representation of the cylinder feedback means that relates to of the utility model;
Fig. 3 is the part enlarged diagram of the cylinder feedback means that relates to of the utility model.
Wherein:
1-feedback rod, 2-connecting sleeve, 3-connecting pin, 4-stuffing box gland, 5-extension rod, 6-pilot pin, 7-cylinder lower piston, 8-piston rod, 9-piston lower end cap, 10-guide ring, 11-the one O type circle, 12-the 2nd O type circle, 13-screw, 21-feedback rod, 22-piston, 23 piston rods.
Embodiment
For intention of the present utility model is described better, below in conjunction with accompanying drawing, the utility model content is described further.
As shown in Figure 2, Fig. 2 shows a kind of cylinder feedback means, this device is assemblied in cylinder bottom, described cylinder comprises cylinder lower piston 7 and cylinder lower end cap 9, wherein cylinder lower piston 7 is connected with piston rod 8, this cylinder feedback means comprises feedback rod 1, connecting sleeve 2 and extension rod 5, wherein connecting sleeve 2 is threaded connection the lower end that is fixed on cylinder lower piston 7, one end of feedback rod 1 is connected with connecting sleeve 2 by connecting pin 3, and feedback rod 1 is parallel with piston rod 8 positions, make like this feedback rod 1 synchronously to move up and down with cylinder lower piston 7, wherein, the diameter of bore of connecting sleeve 2 is greater than the external diameter of feedback rod 1, namely feedback rod 1 has appropriate gap with connecting sleeve 2 at circumferential and top, so not only guarantee the coaxality of cylinder lower piston 7 in movement process and between feedback rod 1, can also compensating piston lower end cap 9 and cylinder lower piston 7 between processing and assembly error to avoid bite.
By Fig. 2 in conjunction with Fig. 3, feedback rod 1 is vertically through cylinder lower end cap 9, between feedback rod 1 and cylinder lower end cap 9, be provided with stuffing box gland 4, sealing cover 4 is fixed on cylinder lower end cap 9 by screw 13, between stuffing box gland 4 and cylinder lower end cap 9, by being located at the 2nd O type circle 12 arranging in stuffing box gland 4 outer rims, realize excellent sealing, between feedback rod 1 and stuffing box gland 4, by the O type circle 11 arranging, realize excellent sealing on stuffing box gland 4 inner edges.In addition, the inner edge of sealing cover 4 is provided with step, places guide ring 10 on described step, and this guide ring 10 is placed on stuffing box gland 4 inner edges is convenient to guide feedback rod 1 to pass from stuffing box gland 4.
With reference to Fig. 2, the upper end portion of extension rod 5 is connected with the underpart of feedback rod 1, particularly, underpart at feedback rod 1 is provided with groove, groove inwall is provided with screw thread, on the outer wall of the upper end portion of extension rod 5, screw thread is set, described upper end portion can be deep in the groove of underpart of feedback rod 1 and with this groove between be threaded, thereby extension rod 5 and feedback rod 1 are linked together, and two-piece design has reduced the requirement of coaxality and parallelism between feedback rod 1 and piston hole and piston rod 8 like this.In addition, can also be threaded and adjust the total length of this feedback rod 1 and extension rod 5 by this like this, the underpart of this extension rod 5 is connected with valve indicator cock indicator cock by pilot pin provided thereon 6, like this can be by regulating the position of extension rod 5 to be convenient to be connected with valve indicator cock.
When using above-mentioned cylinder feedback means, can carry out following controlling method:
When work, when cylinder lower piston 7 moves down under action of gas source, cylinder lower piston 7 not only drives piston rod 8 to move down, also by connecting sleeve 2 and connecting pin 3, drive feedback rod 1 synchronously to move down, feedback rod 1 drives extension rod 5 synchronously to move down simultaneously, thereby the pilot pin 6 by extension rod 5 underparts triggers valve indicator cock, to realize the feedback control of valve location.When having changed different valve indicator cocks, can be by the screw thread between degree of tightness feedback rod 1 and extension rod 5 to realize the position regulation of extension rod 1, to connect the valve indicator cock of different model and type.
Embodiment described in the utility model is only the description that preferred implementation of the present utility model is carried out; not the utility model design and scope are limited; do not departing under the prerequisite of the utility model design philosophy; various modification and improvement that in related domain, engineers and technicians make the technical solution of the utility model; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection, is all documented in claims.
Claims (10)
1. a cylinder feedback means, this device is assemblied in cylinder bottom, described cylinder comprises cylinder lower piston (7) and cylinder lower end cap (9), cylinder lower piston (7) is connected with piston rod (8), this cylinder feedback means comprises feedback rod (1), connecting sleeve (2) and extension rod (5), wherein connecting sleeve (2) is threaded connection the lower end that is fixed on cylinder lower piston (7), it is characterized in that: one end of feedback rod (1) is connected with connecting sleeve (2) by connecting pin (3), and feedback rod (1) is parallel with piston rod (8) position, feedback rod (1) can synchronously be moved up and down with cylinder lower piston (7).
2. cylinder feedback means according to claim 1, it is characterized in that: the diameter of bore of connecting sleeve (2) is greater than the external diameter of feedback rod (1), configuration is for compensating processing and the assembly error between cylinder lower end cap (9) and lower piston (7) like this.
3. cylinder feedback means according to claim 1 and 2, is characterized in that: feedback rod (1) vertically, through cylinder lower end cap (9), is provided with stuffing box gland (4) between feedback rod (1) and cylinder lower end cap (9).
4. cylinder feedback means according to claim 3, is characterized in that: between stuffing box gland (4) and cylinder lower end cap (9), by the 2nd O type circle (12) arranging, realize excellent sealing in stuffing box gland (4) outer rim.
5. cylinder feedback means according to claim 4, is characterized in that: between feedback rod (1) and stuffing box gland (4), by the O type circle (11) arranging, realize excellent sealing on stuffing box gland (4) inner edge.
6. cylinder feedback means according to claim 5, is characterized in that: the inner edge of described stuffing box gland (4) is provided with step, places guide ring (10) on described step.
7. cylinder feedback means according to claim 6, is characterized in that: sealing cover (4) is fixed on cylinder lower end cap (9) by screw (13).
8. according to the cylinder feedback means described in any one in claim 4-7, it is characterized in that: the upper end portion of extension rod (5) is connected with the underpart of feedback rod (1).
9. cylinder feedback means according to claim 8, it is characterized in that: the underpart at feedback rod (1) is provided with groove, described groove inwall is provided with screw thread, the outer wall of the upper end portion of extension rod (5) is screw thread, described upper end portion can be deep in the groove of underpart of feedback rod (1) and with this groove between be threaded.
10. cylinder feedback means according to claim 9, is characterized in that: the underpart of this extension rod (5) is connected with valve indicator cock by pilot pin provided thereon (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261873.3U CN203948764U (en) | 2014-05-21 | 2014-05-21 | A kind of cylinder feedback means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261873.3U CN203948764U (en) | 2014-05-21 | 2014-05-21 | A kind of cylinder feedback means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948764U true CN203948764U (en) | 2014-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420261873.3U Expired - Lifetime CN203948764U (en) | 2014-05-21 | 2014-05-21 | A kind of cylinder feedback means |
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| Country | Link |
|---|---|
| CN (1) | CN203948764U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090606A (en) * | 2014-05-21 | 2015-11-25 | 航天长征化学工程股份有限公司 | Feedback device for air cylinder |
| CN105972277A (en) * | 2016-07-20 | 2016-09-28 | 辽阳给排水设备阀门有限公司 | Hydraulic pressure difference piston type two-way surge tower |
| CN109931163A (en) * | 2018-12-31 | 2019-06-25 | 陕西航宇有色金属加工有限公司 | A kind of TC4 titanium alloy feedback rod and its processing method |
-
2014
- 2014-05-21 CN CN201420261873.3U patent/CN203948764U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090606A (en) * | 2014-05-21 | 2015-11-25 | 航天长征化学工程股份有限公司 | Feedback device for air cylinder |
| CN105972277A (en) * | 2016-07-20 | 2016-09-28 | 辽阳给排水设备阀门有限公司 | Hydraulic pressure difference piston type two-way surge tower |
| CN109931163A (en) * | 2018-12-31 | 2019-06-25 | 陕西航宇有色金属加工有限公司 | A kind of TC4 titanium alloy feedback rod and its processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141119 |