Connecting device of straight stroke executing mechanism

Abstract

The utility model discloses a straight stroke actuating mechanism connecting device which comprises a connecting base, one end of the connecting base is connected with an actuating mechanism push rod through a pin shaft, a butt joint groove is formed in the section of the side, away from the actuating mechanism push rod, of the connecting base, meanwhile, a mounting hole is formed in the side wall of the butt joint groove, and the butt joint groove is matched with a butt joint block in size. A limiting seat is fixedly installed at the end of the butt joint block, meanwhile, a screw joint hole is formed in the surface of the limiting seat, a limiting piece is fixedly arranged on the side, away from the connecting seat, of the butt joint block, and a straight stroke valve rod is fixedly installed at the end of the limiting piece. According to the straight stroke executing mechanism connecting device, the fixing bolts penetrate through the mounting holes and are fixed in the threaded connection holes in a threaded connection mode, the butt joint groove and the butt joint block can be locked and fixed, the butt joint groove and the butt joint block are driven to be directly connected in a threaded connection mode, and the butt joint groove and the butt joint block are installed more easily and rapidly.

Description

TECHNICAL FIELD

[0001] The utility model relates to control valve field, concretely is a straight stroke actuator connecting device. BACKGROUND

[0002] The actuator is the driving part of the control valve, which converts the control signal into corresponding action to control the position of the valve inner intercepting element connected with the output shaft or other adjusting mechanism. At present, the output shaft of the straight stroke actuator and the valve stem of the control valve are rigidly connected. Due to the existence of machining errors and assembly errors, the coaxiality and straightness deviation of the actuator output shaft and the valve stem cannot be avoided. These deviations will cause poor cooperation between the valve stem and the guide parts, increase the local resistance, and even cause the valve stem to deform, thereby causing the crawling and jamming of the control valve, which seriously affects the control accuracy. In order to solve the above problems, through retrieval, a straight stroke actuator connecting device with the authorization announcement number CN212718317U is found. The document proposes that the split type bearing seat is two-petal type, the split type bearing seat is fixed by split type clamping block through bolt, and the valve stem is connected with the split type clamping block through thread.

[0003] The valve stem is connected with the split type clamping block through thread, which needs to hold the valve stem, screw the thread structure opened at the end of the valve stem into the screw hole opened in the split type clamping block, and the valve stem is cylindrical as a whole, which is not convenient for force rotation of the valve stem. When installing, it is difficult. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a straight stroke actuator connecting device to solve the defects mentioned in the background art.

[0005] In order to achieve the above purpose, a straight stroke actuator connecting device is provided, which comprises a connecting seat, the connecting seat is connected with the actuator push rod through a pin shaft at one end, a butt joint groove is opened in the side surface of the connecting seat away from the actuator push rod, a mounting hole is opened in the side wall of the butt joint groove, the size of the butt joint groove and the butt joint block is matched, a limiting seat is fixedly installed at the end of the butt joint block, a screw hole is opened in the surface of the limiting seat, a limiting piece is fixedly arranged on the side of the butt joint block away from the connecting seat, and a straight stroke valve stem is fixedly installed at the end of the limiting piece.

[0006] Preferably, limiting grooves are opened in the two sides of the butt joint groove, the cross section of the limiting groove is rectangular, the cross section of the butt joint groove is circular, and mounting holes are opened in the side walls of the two groups of limiting grooves.

[0007] Preferably, limiting seats are fixedly arranged on the two sides of the butt joint block, the cross section of the butt joint block is circular, the cross section of the limiting seat is rectangular, and screw holes are opened in the side walls of the two groups of limiting seats.

[0008] Preferably, the abutting block is inserted into the abutting groove, and the limiting seats on both sides of the abutting block are respectively inserted into the limiting grooves on both sides of the abutting groove.

[0009] Preferably, the limiting seat is inserted into the limiting groove and is fixed by the fixing bolts, and the fixing bolts are symmetrically arranged on both sides of the connecting seat.

[0010] Preferably, the connecting seat and the straight stroke valve rod are positioned and installed by the abutting groove and the abutting block, the abutting block is inserted into the abutting groove and is fixed by the two groups of fixing bolts, and the axial section of the abutting block, the limiting piece and the straight stroke valve rod is a concentric circle structure.

[0011] Compared with the prior art, the beneficial effects of the utility model are that the two groups of limiting seats are respectively inserted into the two groups of limiting grooves, the two groups of limiting grooves and the two groups of limiting seats can increase the abutting area between the connecting seat and the straight stroke valve rod, guarantee the stability and the reliability of kinetic energy transmission when the connecting seat and the straight stroke valve rod are connected, when the abutting block is inserted into the abutting groove, the fixing bolts are screwed into the screwing holes through the mounting holes, the abutting groove and the abutting block can be locked, the abutting groove and the abutting block are directly connected by the screw thread, and the abutting groove and the abutting block are more simple and fast to install. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a front view of the utility model structure;

[0013] Figure 2 It is a bottom view of the utility model structure; Figure 1

[0014] It is a top view of the utility model structure; Figure 3 Figure 1 It is a sectional view of the connecting seat.

[0015] Figure 4 The reference signs in the drawings are as follows: 1, connecting seat; 2, execution mechanism push rod; 3, mounting hole; 31, fixing bolt; 32, screwing hole; 4, abutting groove; 41, limiting groove; 5, abutting block; 51, limiting seat; 6, limiting piece; 7, straight stroke valve rod. DETAILED DESCRIPTION

[0016] Please refer to

[0017] Figures 1-4 ​​The utility model provides a kind of straight stroke actuator connecting device, including connecting seat 1, connecting seat 1 one end is connected with actuator push rod 2 by pin shaft, and the side section of connecting seat 1 away from actuator push rod 2 is equipped with docking groove 4, while mounting hole 3 is equipped on the side wall of docking groove 4, docking groove 4 and the size of docking block 5 are adapted, and the end of docking block 5 is fixedly installed with limit seat 51, while screw hole 32 is equipped on the surface of limit seat 51, limit piece 6 is fixedly arranged on the side of docking block 5 away from connecting seat 1, and straight stroke valve stem 7 is fixedly installed in limit piece 6 end.

[0018] Working principle: the docking installation mode between connecting seat 1 and straight stroke valve stem 7 is: handheld straight stroke valve stem 7, the docking block 5 of straight stroke valve stem 7 end is inserted in the inside of the docking groove 4 opened on the section of connecting seat 1, because the two sides of docking groove 4 are equipped with limit groove 41, while the two sides of docking block 5 are provided with limit seat 51, two groups of limit seat 51 are inserted in the inside of two groups of limit groove 41, the setting of two groups of limit groove 41 and two groups of limit seat 51 can increase the docking area between connecting seat 1 and straight stroke valve stem 7, guarantee the stability when connecting seat 1 and straight stroke valve stem 7 connect and the reliability of kinetic energy transmission, when docking block 5 and the inside of docking groove 4, fixed bolt 31 is screwed and fixed in the inside of screw hole 32 at this time through mounting hole 3, can be locked and fixed between docking groove 4 and docking block 5, the mode that directly adopts screw connection between docking groove 4 and docking block 5 is driven, it is simpler and faster when docking groove 4 and docking block 5 are installed.

[0019] As a preferred implementation, the two sides of docking groove 4 are equipped with limit groove 41, and the section of limit groove 41 is rectangularly arranged, while the section of docking groove 4 is circularly arranged, and the mounting hole 3 is arranged on the side wall of the two groups of limit groove 41.

[0020] The two sides of docking block 5 are fixedly provided with limit seat 51, and the section of docking block 5 is circularly arranged, while the section of limit seat 51 is rectangularly arranged, and the screw hole 32 is arranged on the side wall of the two groups of limit seat 51.

[0021] As a preferred implementation, the docking block 5 is inserted into the inside of the docking groove 4, and the limit seat 51 on the two sides of the docking block 5 is inserted into the limit groove 41 on the two sides of the docking groove 4.

[0022] As a preferred implementation, the limit seat 51 is inserted into the limit groove 41 and is screwed and fixed by the fixed bolt 31, and the fixed bolt 31 is arranged as two groups of symmetrically distributed on the two sides of the connecting seat 1.

[0023] The connecting seat 1 and the straight stroke valve rod 7 are positioned and installed through the butt joint groove 4 and the butt joint block 5, the butt joint block 5 is inserted into the inside of the butt joint groove 4 and is fixedly connected through two groups of fixing bolts 31, and the axial section of the butt joint block 5, the limiting sheet 6 and the straight stroke valve rod 7 is a concentric circle structure.

Claims

1. A linear actuator connection device comprising a connection seat (1), characterized in that: One end of the connecting seat (1) is connected with the actuator push rod (2) through a pin shaft, and a butt joint groove (4) is opened in the section of the side of the connecting seat (1) away from the actuator push rod (2), while a mounting hole (3) is opened in the side wall of the butt joint groove (4), the butt joint groove (4) is matched in size with the butt joint block (5), and the end of the butt joint block (5) is fixedly installed with a limiting seat (51), while the surface of the limiting seat (51) is provided with a threaded hole (32), the side of the butt joint block (5) away from the connecting seat (1) is fixedly provided with a limiting piece (6), and the end of the limiting piece (6) is fixedly installed with a straight stroke valve rod (7).

2. A linear actuator coupling device according to claim 1, wherein: The two sides of the butt joint groove (4) are provided with limiting grooves (41), and the section of the limiting groove (41) is rectangular, while the section of the butt joint groove (4) is circular, and the side walls of the two groups of limiting grooves (41) are provided with mounting holes (3).

3. A linear actuator coupling device according to claim 1, wherein: The two sides of the butt joint block (5) are fixedly provided with limiting seats (51), and the section of the butt joint block (5) is circular, while the section of the limiting seat (51) is rectangular, and the side walls of the two groups of limiting seats (51) are provided with threaded holes (32).

4. A linear actuator coupling device according to claim 2 or 3, wherein: The butt joint block (5) is inserted into the butt joint groove (4), and the limiting seats (51) on the two sides of the butt joint block (5) are respectively inserted into the limiting grooves (41) opened on the two sides of the butt joint groove (4).

5. A linear actuator coupling device according to claim 4, wherein: The limiting seat (51) is inserted into the limiting groove (41) and is screw-fixed by the fixing bolt (31), and the fixing bolt (31) is arranged in two groups and symmetrically distributed on the two sides of the connecting seat (1).

6. A linear actuator coupling device according to claim 1, wherein: The connecting seat (1) and the straight stroke valve rod (7) are positioned and installed through the butt joint groove (4) and the butt joint block (5), the butt joint block (5) is inserted into the butt joint groove (4) and is fixedly connected by the two groups of fixing bolts (31), the axial sections of the butt joint block (5), the limiting piece (6) and the straight stroke valve rod (7) are concentric circular structures.

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