CN215635296U - Shifting fork type pneumatic actuating mechanism with strong universality - Google Patents
Shifting fork type pneumatic actuating mechanism with strong universality Download PDFInfo
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- CN215635296U CN215635296U CN202122128726.1U CN202122128726U CN215635296U CN 215635296 U CN215635296 U CN 215635296U CN 202122128726 U CN202122128726 U CN 202122128726U CN 215635296 U CN215635296 U CN 215635296U
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Abstract
The utility model discloses a shifting fork type pneumatic actuating mechanism with strong universality, relates to the field of actuators, and solves the problem that two shifting forks cannot be used universally. The sliding block is arranged on the piston rod in a sliding mode, the sliding block is connected with the shifting fork through a bolt in a transmission mode, the shifting fork comprises a shifting fork main body, a shifting fork arm and a guide piece, a mounting hole is formed in the shifting fork arm, the guide piece is detachably mounted in the mounting hole, a sliding hole is formed in the guide piece, the length direction of the sliding hole is arranged along the central axis of the shifting fork main body or forms an inclined acute angle with the central axis of the shifting fork, and the bolt is inserted into the sliding hole and forms sliding fit along the length direction of the sliding hole. The split type shifting fork main body and the shifting fork arm can be universal, the shifting fork main body and the shifting fork arm can be produced in batches without classification, the required shifting fork structure can be realized only by replacing the dismounting guide piece, the universality is high, the production efficiency can be improved, the production cost is reduced, and the temporary modification can be realized in time when the demand side needs.
Description
Technical Field
The utility model relates to the field of actuators, in particular to a shifting fork type pneumatic actuating mechanism with strong universality.
Background
The shifting fork type pneumatic actuating mechanism with strong universality drives a shifting fork to rotate by the linear motion of a piston rod, so as to drive a main shaft or a valve rod to rotate, and is suitable for switching off or metering control of valves (such as ball valves, butterfly valves and plug valves) with the rotation angle of 90 degrees. The shifting fork type pneumatic actuating mechanism with strong universality generally has two design structures according to the torque characteristics and different use requirements of various valves, one is a symmetrical shifting fork design, and the other is an inclined shifting fork design. The symmetrical shifting fork is characterized in that the length direction of a fixed sliding block hole on the shifting fork is arranged along the central axis of the shifting fork, so that the torque output curves of the valve from opening to closing are symmetrical, and the moments at two ends are consistent in size. The inclined shifting fork is characterized in that the length direction of a fixed sliding block hole on the shifting fork forms an inclined angle with the central axis of the shifting fork, the torque output curve of an actuating mechanism can be changed according to requirements, and the torque when the valve is opened or closed is adjusted. Because two kinds of shift fork designs need carry out the die sinking respectively because of the difference in fixed slider hole to two kinds of shift forks, casting, processing and stock respectively, and unable general production cost that leads to rises, demand side if need be at the on-the-spot better accessory of not being convenient for when changing the lectotype scheme temporarily of use.
Disclosure of Invention
The purpose of the utility model is as follows: in order to overcome the defects of the prior art, the utility model provides the shifting fork type pneumatic actuating mechanism with strong universality, and solves the problem that two shifting forks cannot be used universally.
The technical scheme of the utility model is as follows: including shift fork, slider and piston rod, the slider slides and sets up on the piston rod, the slider is connected with the shift fork transmission through a bolt, the shift fork is including shift fork main part, shift fork arm and guide, the mounting hole has been seted up on the shift fork arm, guide demountable installation is in the mounting hole, the slide opening has been seted up in the guide, the length direction of slide opening arranges or forms the slope acute angle with the axis of shift fork along the axis of shift fork main part, the bolt inserts to the slide opening in the length direction of following the slide opening and forms sliding fit.
Adopt above-mentioned technical scheme, components of a whole that can function independently design guide and shifting fork arm, design into two kinds of structures with the sliding hole of guide, pack it into in the mounting hole through the guide of selecting to be fit for, can obtain symmetrical formula shift fork or tilting shift fork, so, shift fork main part and shift fork arm can be general, can carry out not categorised batch production, only need change the dismouting guide and can realize required shift fork structure, therefore, the commonality is strong, can improve production efficiency, and the production cost is reduced, the demand side needs interim remodelling can in time be realized.
The utility model further comprises the following steps: the shifting fork arm is provided with a plurality of screws, and the screws are screwed into the guide piece from the upper threads of the shifting fork arm along the width direction of the mounting hole.
Adopt above-mentioned further setting, through the rotatory screw of installation, realize that the guide member dismantled and assembled fixes on shifting fork arm, the guide member is changed in the dismouting fast convenient.
The utility model further provides that: the guide piece is provided with a positioning lug, and the hole wall of the sliding hole is provided with a positioning groove matched with the positioning lug.
By adopting the above further arrangement, the guide piece is initially positioned, so that the guide piece is convenient to install and fix.
Still further arrangements of the utility model are: a cushion pad is arranged between the guide piece and the sliding hole and surrounds the periphery of the guide piece.
With the above still further arrangement, the cushion pad separates the guide member from direct contact with the slide hole for cushioning a rigid impact between the guide member and the slide hole.
Still further arrangements of the utility model are: the bolt is sleeved with a rolling bearing, and the rolling bearing and the sliding hole form rolling fit.
By adopting the above further arrangement, the transmission friction coefficient between the shifting fork and the sliding block is optimized, and the transmission efficiency is high, the abrasion is slow and the durability is high.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a symmetrical fork according to the present invention;
FIG. 3 is a schematic view of a tilting fork according to the present invention;
FIG. 4 is a schematic structural view of the split shifting fork of the present invention;
wherein, 1, a shifting fork; 2. a slider; 3. a piston rod; 4. a bolt; 11. a shift fork main body; 12. a fork arm; 13. a guide member; 121. mounting holes; 131. a slide hole; 121. a screw; 132. positioning the bump; 122. positioning a groove; 14. a cushion pad; 5. a rolling bearing.
Detailed Description
As shown in fig. 1-4, a shifting fork pneumatic actuator with strong versatility comprises a shifting fork 1, a slide block 2 and a piston rod 3, wherein the slide block 2 is slidably disposed on the piston rod 3, the slide block 2 is in transmission connection with the shifting fork 1 through a bolt 4, the bolt 4 is fixed on the slide block 2 and the bolt 4 is inserted into the shifting fork 1, the shifting fork 1 comprises a shifting fork main body 11, 12 and guides 13 of shifting fork arm, 12 an organic whole of shifting fork arm connects on shifting fork main part 11, shifting fork arm 12 has two of parallel arrangement, mounting hole 121 has been seted up on shifting fork arm 12, guides 13 demountable installation is in mounting hole 121, sliding hole 131 has been seted up in guides 13, sliding hole 131's length direction arranges or forms the slope acute angle with the axis of shift fork along the axis of shifting fork main part 11, bolt 4 inserts and forms sliding fit to sliding hole 131 in the length direction along sliding hole 131. The guide piece 13 has two different structural specifications, and the difference is the position and the azimuth angle of the sliding hole 131, wherein the guide piece 13 arranged along the central axis of the shifting fork 1 in the length direction of the sliding hole 131 is installed in the installation hole 121, so that a symmetrical shifting fork structure can be realized, and the torque output of the whole actuating mechanism is consistent; in addition, an inclined acute angle α is formed between the length direction of the sliding hole 131 and the central axis of the shift fork 1, so that an inclined shift fork structure can be realized, and the torque output curve of the whole actuating mechanism is in a downward-sliding inclined shape. Therefore, the fork body 11 and the fork arm 12 except the guide 13 can be formed by one mold, only the guide 13 with different structures needs to be processed, and the stock can be reduced by more than one time in casting, processing and stock preparation.
The shifting fork arm 12 is provided with a plurality of screws 121, and the screws 121 are screwed into the guide 13 from the shifting fork arm 12 along the width direction of the mounting holes 121. The screws 121 are provided in four, and are screwed in two groups from both sides of the fork arm 12 to fix the guide 13. The sliding motion of the bolt 4 in the guide 13 slides back and forth along the length direction of the sliding hole 131, and the screw 121 is screwed in along the width direction of the mounting hole 121, so that the load generated by the sliding motion of the bolt 4 is not borne, and therefore, the bolt 121 only needs to fix the guide 13 in the mounting hole 121, and the effective operation of the bolt 4 and the guide 13 can be guaranteed.
Be provided with location lug 132 on the guide 13, seted up constant head tank 122 on the pore wall of sliding hole 131, the size of location lug 132 and constant head tank 122 is identical, and location lug 132 pegs graft to constant head tank 122 and forms the location, can tentatively fix a position guide 13, is convenient for install fixed guide 13.
A soft buffer 14 is arranged between the guide 13 and the sliding hole 131, the buffer 14 wraps around the guide 13, and the buffer 14 is used for buffering the rigid impact between the guide 13 and the sliding hole 131.
The bolt 4 is sleeved with the rolling bearing 5, the rolling bearing 5 is in rolling fit with the sliding hole 131, and friction between the bolt 4 and the sliding hole 131 is reduced.
Claims (5)
1. The utility model provides a shifting fork formula pneumatic actuator that commonality is strong, including shift fork, slider and piston rod, the slider slides and sets up on the piston rod, the slider is connected its characterized in that through a bolt and shift fork transmission: the shift fork is including shift fork main part, shift fork arm and guide, the mounting hole has been seted up on the shift fork arm, guide demountable installation is in the mounting hole, the slide opening has been seted up in the guide, the length direction of slide opening arranges or forms the slope acute angle with the axis of shift fork along the axis of shift fork main part, the bolt forms sliding fit along the length direction of slide opening in inserting to the slide opening.
2. The high-versatility shifting fork type pneumatic actuator according to claim 1, characterized in that: the shifting fork arm is provided with a plurality of screws, and the screws are screwed into the guide piece from the upper threads of the shifting fork arm along the width direction of the mounting hole.
3. The strong versatility of a fork pneumatic actuator according to claim 1 or 2, characterized in that: the guide piece is provided with a positioning lug, and the hole wall of the sliding hole is provided with a positioning groove matched with the positioning lug.
4. The strong versatility of a fork pneumatic actuator according to claim 1 or 2, characterized in that: and a buffer cushion is arranged between the guide piece and the sliding hole and surrounds the periphery of the guide piece.
5. The strong versatility of a fork pneumatic actuator according to claim 1 or 2, characterized in that: the bolt is sleeved with a rolling bearing, and the rolling bearing and the sliding hole form rolling fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122128726.1U CN215635296U (en) | 2021-09-03 | 2021-09-03 | Shifting fork type pneumatic actuating mechanism with strong universality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122128726.1U CN215635296U (en) | 2021-09-03 | 2021-09-03 | Shifting fork type pneumatic actuating mechanism with strong universality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215635296U true CN215635296U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122128726.1U Active CN215635296U (en) | 2021-09-03 | 2021-09-03 | Shifting fork type pneumatic actuating mechanism with strong universality |
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| CN (1) | CN215635296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929978A (en) * | 2022-12-23 | 2023-04-07 | 无锡福斯拓科科技有限公司 | Offset shifting fork applying curve groove type |
-
2021
- 2021-09-03 CN CN202122128726.1U patent/CN215635296U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929978A (en) * | 2022-12-23 | 2023-04-07 | 无锡福斯拓科科技有限公司 | Offset shifting fork applying curve groove type |
| CN115929978B (en) * | 2022-12-23 | 2023-11-24 | 无锡福斯拓科科技有限公司 | Offset type shifting fork applying curve groove type |
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