CN207377985U - A kind of valve rod automatic aligning part - Google Patents
A kind of valve rod automatic aligning part Download PDFInfo
- Publication number
- CN207377985U CN207377985U CN201721113947.9U CN201721113947U CN207377985U CN 207377985 U CN207377985 U CN 207377985U CN 201721113947 U CN201721113947 U CN 201721113947U CN 207377985 U CN207377985 U CN 207377985U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- input shaft
- output shaft
- shaft
- pawl
- 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
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- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model provides a kind of valve rod automatic aligning part, belongs to field of mechanical technique.It solves the problems, such as that existing valve-testing machine be easy to cause valve rod swing.This valve rod automatic aligning part includes input shaft and output shaft, one end of input shaft is connected with one end of output shaft and input shaft forms axial restraint with output shaft, the end face that input shaft is connected with output shaft is equipped with the connection pawl of at least two protrusions, each connection pawl is in circumferentially distributed, the end face that output shaft is connected with input shaft is equipped with a number of identical with connection pawl and one-to-one link slot, each connection pawl is located in corresponding link slot, and the groove width of link slot is more than the width of connection pawl and output shaft can be compared with input shaft radial-play.It has many advantages, such as the center of rotation of energy adjust automatically valve rod, prevents valve rod from swinging.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of valve rod automatic aligning part.
Background technology
At present for the air-leakage test of valve, realized using special air-tightness testing device.It, will during detection
The valve body of valve is vertically disposed on the clamping bench of airtight test equipment, is released using upper and lower two cylinders by two end seals of valve body
It closes, the valve rod of valve is connected with the machine shaft in airtight test equipment, by machine shaft valve rod is driven to rotate to close
Then valve closing door is inflated to carry out air-leakage test into valve body using one of cylinder.
Although valve body makes the surface of valve rod and clamping bench after installing, in parastate, the axis of valve rod does not ensure that
It is mutually conllinear with the axis of the shaft of motor, and since the other end that valve rod is connected with machine shaft is fixed, then if
It is that directly the shaft of motor is connected with valve rod if driving rotation, it is easy to will result in the center of rotation at valve rod both ends not
It swings with one heart, when especially testing valve type valve, needs the number of turns that valve rod rotates relatively more when closing valve, it can shadow
Ring the quality to valve.
The content of the invention
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of valve rod automatic aligning
Part, the technical problem to be solved is that the centers of rotation of adjust automatically valve rod, and valve rod is avoided to swing.
The purpose of this utility model can be realized by following technical proposal：
A kind of valve rod automatic aligning part, including input shaft and output shaft, one end of the input shaft and the one of output shaft
End is connected and input shaft forms axial restraint with output shaft, which is characterized in that one end that the input shaft is connected with output shaft
Face is equipped with the connection pawl of at least two protrusions, and each pawl that connects is in circumferentially distributed, one end that the output shaft is connected with input shaft
Face is equipped with a number of identical with connection pawl and one-to-one link slot, and each pawl that connects is located in corresponding link slot, connects
The groove width of slot is more than the width of connection pawl and output shaft can be compared with input shaft radial-play.
This valve rod automatic aligning part is mainly used in the airtight test equipment of valve, test when valve body be disposed vertically in
On the clamping bench of the airtight test equipment of valve, valve rod is in parastate with clamping bench surface, by input shaft and the airtight survey of valve
The shaft of motor in examination equipment is connected, and output shaft is connected with the valve stem end of valve, and output is driven by the shaft of motor
Axis rotates, and by the cell wall of the connection pawl on input shaft and the link slot on input shaft leans that output shaft is driven to rotate,
The finally rotation with ovable valve stem.
Since the groove width of link slot is more than the width of connection pawl, after connection pawl is located in link slot, output shaft being capable of phase
For input shaft radial-play, which can mend existing offset between valve rod axis and machine shaft axis
It repays, simultaneously because the quantity of connection pawl is for two and in circumferentially distributed, then and input shaft will not be made radially to be taken off with output shaft
It opens.Specifically when machine shaft rotates, by output shaft along machine shaft axis and valve rod axis generate deviation direction into
Row play carrys out the center of rotation with positive valve rod, so that the center of rotation at valve rod both ends can keep concentric, avoids valve rod because of pendulum
It moves and influences the quality of valve.
In above-mentioned valve rod automatic aligning part, the both sides cell wall of the link slot is parallel, and the connection pawl is in
Block and connection pawl two side is parallel.
The both sides cell wall of link slot is parallel, it is meant that and link slot is square groove, while the two side for connecting pawl is parallel,
Mean that it is in square to connect pawl, then after each connection pawl is located in corresponding link slot, be less than company by connecting pawl width
The groove width of access slot obtains so that the axis of output shaft carries out play, left and right play or upper bottom left up and down compared with the axis of input shaft
Right play so that the center of rotation at valve rod both ends can keep concentric, avoids valve rod from influencing the quality of valve due to swing.
In above-mentioned valve rod automatic aligning part, the end face that the output shaft is connected with input shaft has several protrusions
Link block, above-mentioned link slot is formed between adjacent link block, each link block is inserted into respectively between two adjacent connection pawls, defeated
Enter axis and form axial restraint with the circlip for shaft on the outside of each link block by being located at each connection pawl with output shaft.
The link block of several protrusions is set in the end face that output shaft is connected with input shaft, is formed between adjacent link block
Link slot, then when connection pawl is located in link slot, each link block will be correspondingly inserted between two adjacent connection pawls,
Link block is spaced with being connected pawl in this state, then binds round axis bullet in the outside of each connection pawl and each link block
Property baffle ring, can thus make output shaft can compared with the circumferential play of input shaft to realize automatic aligning while with it is defeated
Enter axis and form axial restraint.
In above-mentioned valve rod automatic aligning part, each connect is equipped with arc-shaped slot one on the outside of pawl, outside each link block
Side is equipped with arc-shaped slot two, and the circlip for shaft is caught in each arc-shaped slot one and each arc-shaped slot two.
Snapped onto by circlip for shaft in each arc-shaped slot one and each arc-shaped slot two, make output shaft and input shaft it
Between form axial restraint, preventing output shaft and input shaft from disengaging while automatic aligning using aligning gap, avoiding influencing
To normal rotation of the output shaft with driven input shaft.
In above-mentioned valve rod automatic aligning part, the quantity of the connection pawl is four, and each pawl that connects is connected in ten
Font, each link slot are connected for cross recess.
Each connection pawl is connected in cross, and such shape causes output shaft compared with input shaft at four up and down
Orientation can carry out play, from regardless of valve rod and output shaft have bias in which orientation, can pass through input shaft
Automatic aligning is realized compared with play of the output shaft in corresponding orientation.
In above-mentioned valve rod automatic aligning part, the other end that the output shaft is connected with input shaft has protrusion
Connecting portion, the connecting portion are equipped with the delivery outlet in flat shape.
One end of existing valve rod is essentially all in flat shape, therefore is set on the connecting portion of output shaft in flat shape
Delivery outlet for valve rod one end insertion after, so that it may so that output shaft zero deflection area ovable valve stem rotate, to improve detection stability
And accuracy of detection.
Compared with prior art, this valve rod automatic aligning part on input shaft by setting connection pawl, setting on output shaft
Link slot enables the axis of output shaft compared with the axis play of input shaft after being located in link slot by connecting pawl, and borrows
The play is helped to be compensated to existing offset between valve rod axis and machine shaft axis, so as to reach self regulating valve
The center of rotation of bar avoids influencing the quality of valve due to the center of rotation swing of valve rod.
Description of the drawings
Fig. 1 is the schematic diagram of this valve rod automatic aligning part.
Fig. 2 is connecting portion and the sectional view at socket part in Fig. 1.
Fig. 3 is the schematic diagram of input shaft in this valve rod automatic aligning part.
Fig. 4 is the schematic diagram of output shaft in this valve rod automatic aligning part.
In figure, 1, input shaft；1a, connection pawl；1a1, arc-shaped slot one；2nd, output shaft；2a, link slot；2b, link block；
2b1, arc-shaped slot two；2c, connecting portion；2c1, delivery outlet；3rd, circlip for shaft.
Specific embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1, a kind of valve rod automatic aligning part, including input shaft 1 and output shaft 2, one end of input shaft 1 with it is defeated
One end of shaft 2 is connected and input shaft 1 forms axial restraint with output shaft 2, and input shaft 1 is connected another with output shaft 2
End is equipped with connecting portion 2c, and connecting portion 2c is equipped with delivery outlet 2c1, and delivery outlet 2c1 is in flat shape, except of course that outside flat shape, it is defeated
The shape of 2c1 of portalling can be designed or the forms such as square hole, slot according to actual conditions.
As shown in Figure 2, Figure 3 and Figure 4, the end face that input shaft 1 is connected with output shaft 2 is equipped with the connection of at least two protrusions
Pawl 1a, each pawl 1a that connects is in circumferentially distributed.One end that output shaft 2 is connected with input shaft 1 has a number of with being connected pawl 1a
Identical and one-to-one link slot 2a, each pawl 1a that connects are located in corresponding link slot 2a, and the groove width of link slot 2a, which is more than, to be connected
It connects the width of pawl 1a and output shaft 2 can be compared with the circumferential play of input shaft 1.In the present embodiment, the both sides of link slot 2a
Cell wall is parallel, and connection pawl 1a is parallel in block and connection pawl 1a two side.
In the present embodiment, the quantity of pawl 2a1 is connected as four, and each pawl 2a1 that connects is connected in cross, each link slot
2a2, which is connected, is connected in cross recess.It is of course also possible to select to set notch on output shaft 2 with being connected pawl, and in the company of input shaft 1
Link block and link slot are correspondingly arranged on socket part 1a, and similarly to ensure the width of the connection pawl on output shaft 2 less than defeated
Enter the groove width of the link slot on axis 1.
Shown as shown in Figure 1, Figure 3 and Figure 4, the end face that output shaft 2 is connected with input shaft 1 has the link block of several protrusions
Formation link slot 2a between 2b, connected link block 2b, each link block 2b are inserted into respectively between two adjacent connection pawls.Each connection
Be respectively provided on the outside of pawl 1a on the outside of arc-shaped slot one 1a1, each link block 2b and be respectively provided with two 2b1 of arc-shaped slot, input shaft 1 with it is defeated
Shaft 2 forms axial restraint by circlip for shaft 3, and circlip for shaft 3 is caught in each one 1a1 of arc-shaped slot and each arc card
In two 2b1 of slot.
This valve rod automatic aligning part is mainly used in the airtight test equipment of valve, and in test, valve body is to be disposed vertically
In on the clamping bench of the airtight test equipment of valve, valve rod and clamping bench surface in parastate, by the input hole of input shaft 1 with
The shaft of motor in the airtight test equipment of valve is connected, and the delivery outlet 2b of output shaft 2 is connected with the valve stem end of valve,
It is rotated by the shaft of motor by aligning part come band ovable valve stem.
Since the quantity of connection pawl 1a is at least two, groove width of the width less than link slot 2a of connection pawl 1a to export
Axis 2 can be compared with the circumferential play of input shaft 1, then can be to valve compared with the circumferential play of input shaft 1 by output shaft 2
Existing offset compensates between rod axis and machine shaft axis.Specifically when machine shaft rotates, by output shaft 2
The direction that deviation is generated along the axis and valve rod axis of machine shaft carries out center of rotation of the play with positive valve rod, so that valve
The center of rotation at bar both ends can keep concentric, and valve rod is avoided to influence the quality of valve due to swing.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (6)
1. a kind of valve rod automatic aligning part, including input shaft (1) and output shaft (2), one end of the input shaft (1) and output
One end of axis (2) is connected and input shaft (1) forms axial restraint with output shaft (2), which is characterized in that the input shaft (1)
The end face being connected with output shaft (2) is equipped with the connection pawl (1a) of at least two protrusions, and it is in circumferentially distributed, institute respectively to connect pawl (1a)
The end face that the output shaft (2) stated is connected with input shaft (1) is equipped with a number of identical and one-to-one with connection pawl (1a)
Link slot (2a) respectively connects pawl (1a) and is located in corresponding link slot (2a), and the groove width of link slot (2a) is more than connection pawl (1a)
Width and output shaft (2) can be compared with input shaft (1) radial-play.
2. valve rod automatic aligning part according to claim 1, which is characterized in that the both sides cell wall of the link slot (2a)
Parallel, the connection pawl (1a) is parallel in block and connection pawl (1a) two side.
3. valve rod automatic aligning part according to claim 2, which is characterized in that the output shaft (2) and input shaft (1)
Connected end face has the link block (2b) of several protrusions, and above-mentioned link slot (2a) is formed between adjacent link block (2b),
Each link block (2b) is inserted into respectively between two adjacent connection pawls (1a), and input shaft (1) is with output shaft (2) by being located at each connection
Pawl (1a) forms axial restraint with the circlip for shaft (3) on the outside of each link block (2b).
4. valve rod automatic aligning part according to claim 3, which is characterized in that respectively connect on the outside of pawl (1a) and be equipped with arc
Shape card slot one (1a1) is equipped with arc-shaped slot two (2b1), the circlip for shaft (3) card on the outside of each link block (2b)
It is interior with each arc-shaped slot two (2b1) to enter each arc-shaped slot one (1a1).
5. the valve rod automatic aligning part according to claim 1 or 2 or 3 or 4, which is characterized in that the connection pawl (1a)
Quantity for four, respectively connect pawl (1a) and be connected in cross, each link slot (2a) is connected for cross recess.
6. valve rod automatic aligning part according to claim 1, which is characterized in that the output shaft (2) and input shaft (1)
The other end being connected has the connecting portion (2c) of protrusion, and the connecting portion (2c) is equipped with the delivery outlet in flat shape
(2c1)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721113947.9U CN207377985U (en) | 2017-08-31 | 2017-08-31 | A kind of valve rod automatic aligning part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721113947.9U CN207377985U (en) | 2017-08-31 | 2017-08-31 | A kind of valve rod automatic aligning part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207377985U true CN207377985U (en) | 2018-05-18 |
Family
ID=62343326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721113947.9U Expired - Fee Related CN207377985U (en) | 2017-08-31 | 2017-08-31 | A kind of valve rod automatic aligning part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207377985U (en) |
-
2017
- 2017-08-31 CN CN201721113947.9U patent/CN207377985U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180518 Termination date: 20200831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |