CN213765663U

CN213765663U - Special assembly and disassembly tools of hydraulic turbine servomotor push-and-pull rod connects

Info

Publication number: CN213765663U
Application number: CN202022230270.5U
Authority: CN
Inventors: 贾树坡; 计其祥; 和友邓; 杨勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-07
Filing date: 2020-09-30
Publication date: 2021-07-23
Anticipated expiration: 2030-09-30

Abstract

The utility model discloses a special assembly and disassembly tools of hydraulic turbine servomotor push-and-pull rod joint relates to hydraulic turbine servomotor assembly and disassembly tools technical field. The tool comprises a body and a sliding block, wherein a piston rod connector is arranged at one end of the body, a square head is arranged at the other end of the body, a sliding groove is formed in the top of the body in a downward concave mode, and the sliding block is movably clamped in the sliding groove. Make instrument body and piston rod butt joint through the piston rod connector, conveniently use the cubic spanner to operate the instrument body through the cubic head, accept the piston rod connector that breaks away from with the piston rod through the slider to realize its along spout motion, make things convenient for operating personnel to carry out operations such as rope handling hoist, improved dismouting efficiency greatly, improved the security in the dismouting process simultaneously.

Description

Special assembly and disassembly tools of hydraulic turbine servomotor push-and-pull rod connects

Technical Field

The utility model relates to a hydraulic turbine servomotor assembly and disassembly tools technical field, concretely relates to hydraulic turbine servomotor push-and-pull rod connects special assembly and disassembly tools.

Background

The servomotor is a hydraulic actuator which converts hydraulic energy in the cylinder body into mechanical energy and makes linear reciprocating motion. It has simple structure and reliable operation. When the reciprocating motion is realized by using the hydraulic motor, a speed reducer can be omitted, no transmission gap exists, and the reciprocating motion is stable, so that the hydraulic motor is widely applied to a hydraulic system of a hydropower station. A servomotor in a hydraulic turbine water distributor of a hydropower station applies work to the servomotor through oil pressure by an oil pressure device speed regulator, the servomotor is connected with a control ring through a push-pull rod joint, the control ring does circular reciprocating motion under the action of the servomotor, a connecting plate and a crank arm are driven to control a movable guide vane, the movable guide vane is switched on and off to control water flow, and finally starting, stopping or load increase and decrease of a unit are achieved.

As shown in fig. 1, the servomotor push-pull rod joint 8 is U-shaped, the side wall of the left end is connected with the servomotor piston rod 7 through threads, the right end is provided with an opening, the control ring connecting rod 9 is positioned in the opening and fixed with the push-pull rod joint 8 through a top bolt, the control ring connecting rod 9 is driven by the push-pull rod joint 8 to move when the piston rod 7 reciprocates, and the guide vanes are controlled through a transmission torque.

In order to meet the requirements of life and industrial electricity, frequency modulation is frequent in large and medium hydropower station units during running power generation, so that a servomotor acts frequently, the service life of a cylinder piston seal is shortened due to frequent reciprocating motion of the servomotor, the units are forced to stop in a hydropower station due to oil leakage caused by aging or damage of a piston sealing piece, and when the servomotor leaks oil due to aging or damage of the sealing piece, the sealing element needs to be replaced. At this time, the push-pull rod joint needs to be detached first, so that the piston rod sealing element can be conveniently detached. The weight of the push-pull rod joint is about 1.5 tons, the push-pull rod joint is smooth and has no lifting hole in the U-shaped structure, one end of the piston rod extends into the push-pull rod joint, the pull rod is difficult to thread when the pull block is used for lifting, the piston rod is usually screwed out of the joint while being prevented from falling off, the pull rod is threaded at a proper position and then lifted, a plurality of operators are required to operate simultaneously, the disassembly and assembly are difficult, and the working efficiency is low. Therefore, it is necessary to design a special tool for disassembling the push-pull rod joint of the servomotor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special assembly and disassembly tools of hydraulic turbine servomotor push-and-pull rod joint solves the servomotor push-and-pull rod joint dismouting difficulty, problem that work efficiency is low.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a special assembly and disassembly tools of hydraulic turbine servomotor push-and-pull rod connects which characterized in that: the sliding block is movably clamped in the sliding groove.

A further technical scheme is that a through hole is formed in the side wall of the sliding groove, a counter bore is formed in the side wall of the sliding block, and the fixing rod penetrates into and is fixed in the counter bore from one end of the through hole.

A further technical scheme is that the bottom of the sliding groove is provided with a groove which is concave downwards, and the groove is movably provided with a roller.

A further technical scheme is that a handle is arranged on one side, close to the square head, of the sliding block.

A fixing column is arranged on one side, provided with the square head, of the body, and a baffle is movably hinged to the fixing column.

A further technical proposal is that an extension spring is arranged between the baffle and the side wall of the body.

The working principle is as follows: the tool body is put into the U-shaped opening of the push-pull rod joint, the piston rod connecting joint is connected to the fixing hole in the end portion of the piston rod in a butt mode, the piston rod is rotated through the tool body or other auxiliary tools, the piston rod is separated from one side of the push-pull rod joint, the position of the sliding block is aligned with the push-pull rod joint upwards when the piston rod is separated, and the push-pull rod joint moves downwards under the gravity after the piston rod is separated and falls to the top of the sliding block. At the moment, the fixed rod is detached, the baffle is moved away, the slider is pulled to move to a proper position along with the slider through the force applied by the handle, and then the push-pull rod joint can be detached through rope threading and hoisting.

When the push-pull rod joint is installed, the push-pull rod joint is firstly arranged on the sliding block, the sliding ring is pushed to move towards the direction of the piston rod, the piston rod is lifted when approaching, the piston rod is screwed into the push-pull rod joint through the tool body or other auxiliary tools, and finally the tool body is dismantled.

Compared with the prior art, the beneficial effects of the utility model are that: make instrument body and piston rod butt joint through the piston rod connector, conveniently use the cubic spanner to operate the instrument body through the cubic head, accept the piston rod connector that breaks away from with the piston rod through the slider to realize its along spout motion, make things convenient for operating personnel to carry out operations such as rope handling hoist, improved dismouting efficiency greatly, improved the security in the dismouting process simultaneously.

Drawings

Fig. 1 is a using state diagram of the servomotor push-pull rod joint.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is an assembly diagram of the present invention.

Fig. 4 is a usage status diagram of the present invention.

Fig. 5 is another usage state diagram of the present invention.

In the figure: 1-body, 101-piston rod connector, 102-square head, 103-sliding chute, 104-through hole, 105-groove, 106-fixed column, 2-sliding block, 201-counter bore, 202-handle, 3-fixed rod, 4-roller, 5-baffle, 6-extension spring, 7-piston rod, 8-push-pull rod connector and 9-control ring connecting rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Examples

Fig. 1 shows a special disassembling tool for a servomotor push-pull rod joint, which comprises a body 1 and a sliding block 2, wherein the body 1 can be cylindrical or in other shapes, the diameter of the body 1 is smaller than the outer diameter of the end part of a piston rod 7, and the end part of the body is provided with a small threaded hole for rotating the piston rod 7. One end of the body 1 is provided with a piston rod connector 101 which is butted with a threaded hole at the end part of the piston rod 7. In order to facilitate the butt joint of the body 1 and the piston rod 7, the other end of the body 1 is provided with a square head 102, so that the square wrench is convenient to use. The top of the body 1 is concave downwards to form a sliding groove 103, and the sliding block 2 is movably clamped in the sliding groove 103.

As shown in fig. 2, a through hole 104 is formed in a side wall of the sliding groove 103, a counter bore 201 is formed in a side wall of the slider 2, and when the slider 2 is loaded to a proper position along the sliding groove 103, the fixing rod 3 is inserted into and fixed in the counter bore 201 from one end of the through hole 104. The fixing rod 3 can use a threaded rod, so that the sliding block 2 is fixed on the body 1 and is prevented from falling off in the rotating process of the body 1.

The bottom of the sliding groove 103 is provided with a groove 105 in a downward concave manner, the groove 105 is movably provided with a roller 4, and the arrangement of the roller 4 is convenient for the sliding block 2 to slide in the sliding groove 103. In order to facilitate the pulling out of the sliding block 2, a handle 202 is arranged on one side of the sliding block 2 close to the square head 102.

For further fixing the sliding block 2, a fixing column 106 is arranged on one side, provided with the square head 102, of the body 1, a baffle plate 5 is movably hinged to the fixing column 106, and an extension spring 6 is arranged between the baffle plate 5 and the side wall of the body 1.

The working process is as follows:

as shown in fig. 3, an assembled tool is firstly put into the U-shaped opening of the push-pull rod joint 8, so that the piston rod joint 101 is butted into the threaded hole at the end of the piston rod 7, the piston rod 7 is rotated by the tool body 1 or other auxiliary tools, so that the piston rod 7 is pulled out from one side of the push-pull rod joint 8, the position of the slide block 2 is upward to align with the push-pull rod joint 101 when the piston rod is pulled out, and the push-pull rod joint 8 moves downward under gravity after the piston rod is pulled out and falls onto the top of the slide block 2. At this time, the fixing rod 3 is removed, the baffle 5 is rotated to be in a horizontal position, the pull handle 202 applies force, and the slider 2 is pulled to move to a proper position, as shown in fig. 4. At the moment, the push-pull rod joint 8 is lifted by threading to move towards the direction of the body 1 until being separated from the body 1, the push-pull rod joint 8 is removed, and after the piston rod 7 is separated from the push-pull rod joint 8, the threading space is large, the operation is convenient, the operation by multiple persons is not needed, and the efficiency is greatly improved.

In the process of replacing the sealing element, the tool does not need to be disassembled, when the push-pull rod joint 8 is installed after replacement is finished, the push-pull rod joint 8 is firstly hoisted and placed on the sliding block 2, the sliding ring 2 is pushed to move towards the direction of the piston rod 7, the piston rod 7 is hoisted when the piston rod 7 approaches, the piston rod 7 is screwed into the push-pull rod joint 8 through the tool body 1 or other auxiliary tools, and finally the tool body 1 is disassembled.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More particularly, various variations and modifications are possible in the component parts and/or arrangements within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. The utility model provides a special assembly and disassembly tools of hydraulic turbine servomotor push-and-pull rod connects which characterized in that: the piston rod type sliding block comprises a body (1) and a sliding block (2), wherein a piston rod connector (101) is arranged at one end of the body (1), a square head (102) is arranged at the other end of the body (1), a sliding groove (103) is formed in the top of the body (1) in a downward concave mode, and the sliding block (2) is movably clamped in the sliding groove (103).

2. The special disassembling tool for the push-pull rod joint of the hydraulic turbine servomotor according to claim 1, wherein: a through hole (104) is formed in the side wall of the sliding groove (103), a counter bore (201) is formed in the side wall of the sliding block (2), and the fixing rod (3) penetrates into and is fixed in the counter bore (201) from one end of the through hole (104).

3. The special disassembling tool for the push-pull rod joint of the hydraulic turbine servomotor according to claim 1, wherein: the bottom of the sliding groove (103) is provided with a groove (105) which is concave downwards, and the groove (105) is movably provided with a roller (4).

4. The special disassembling tool for the push-pull rod joint of the hydraulic turbine servomotor according to claim 1, wherein: and a handle (202) is arranged on one side of the sliding block (2) close to the square head (102).

5. The special disassembling tool for the push-pull rod joint of the hydraulic turbine servomotor according to claim 1, wherein: one side of the body (1) provided with the square head (102) is provided with a fixing column (106), and a baffle (5) is movably hinged on the fixing column (106).

6. The special disassembling tool for the push-pull rod joint of the hydraulic turbine servomotor according to claim 5, wherein: and an extension spring (6) is arranged between the baffle (5) and the side wall of the body (1).