180-degree automatic turnover machine for multi-specification heavy-duty nuclear power gate valve

Abstract

The utility model belongs to the technical field of turnover device. In order to solve the problem that the existing turnover machine needs to be customized according to the product characteristics when the heavy load product is turned over, a 180-degree automatic turnover machine for multi-specification heavy load nuclear gate valve is provided, which comprises a gate valve clamp, a conveying mechanism and a cage type turnover rack. The gate valve clamp comprises two clamping frames symmetrically arranged up and down, a clamping module and a plurality of positioning pins of the same specification are arranged in the clamping frame, the clamping module clamps the valve cover head, the plurality of positioning pins limit the position of the valve body center hole, the gate valve clamp is placed on the top of the conveying mechanism, the conveying mechanism conveys the gate valve to the turnover position, the cage type turnover rack comprises a body frame connected with the conveying mechanism and a clamp pressing mechanism arranged in the body frame, and the cage type turnover rack is used for realizing the turnover of the gate valve. Such design improves the applicability and safety of the turnover machine, and the turnover of the heavy load product can be realized without customizing the design of the turnover machine, thereby reducing the cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of flipping devices, and in particular relates to a 180-degree automatic flipping machine for multi-specification heavy-duty nuclear power gate valves. Background Technology

[0002] Before the automatic flipping machine performs the flipping operation, the workpiece must be positioned and clamped to ensure that the workpiece's posture does not change due to gravity during the flipping process, thus preventing damage to the workpiece and the flipping machine itself. Therefore, general-purpose flipping machines have certain requirements for the shape and structure of the workpiece to facilitate positioning and clamping. The general structure of automatic flipping machines is suitable for flipping operations of products with small to medium loads, while the flipping requirements of heavy-duty products require customized design based on product characteristics. Furthermore, for irregularly shaped workpieces, special tooling fixtures are required for clamping and positioning. The flipping machine is customized according to the structure of the special tooling fixtures, and the special tooling fixtures are used for clamping and positioning to ultimately achieve the flipping operation, resulting in high costs.

[0003] The heavy-duty nuclear power plant gate valve weighs approximately 22 tons. During the surface spraying process in the production stage, the gate valve body is laid flat on a flatbed cart and first manually sprayed on the upper surface. Then, it is transported out of the paint booth and the gate valve head is lifted by an overhead crane to make it vertical. The overhead crane is then moved to pull the gate valve to tilt and flip it over. It is then placed in a flatbed cart and sent to the paint booth to spray the other side of the workpiece. Because the gate valve is very heavy and is flexibly connected to the overhead crane by a steel wire rope during the flipping process, the flipping action is not only unreliable but also poses certain safety hazards. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a 180-degree automatic tilting machine for heavy-duty nuclear power gate valves of various specifications that can tilt heavy-duty gate valves and improve safety.

[0005] This utility model provides a 180-degree automatic tilting machine for heavy-duty nuclear power plant gate valves of various specifications, including: A gate valve clamp includes two clamping frames arranged symmetrically at the top and bottom. Each clamping frame is provided with a clamping module and a plurality of positioning pins of the same specification. The clamping module is used to clamp the valve cover head of the gate valve, and the plurality of positioning pins are used to define the position of the center hole of the valve body of the gate valve. A conveying mechanism, wherein the gate valve clamp is disposed on the top of the conveying mechanism, and the conveying mechanism is used to convey the gate valve to the flipped position; A cage-type tilting frame includes a main frame and a clamping mechanism. The main frame is connected to the conveying mechanism. The clamping mechanism is located inside the main frame and is used to clamp the gate valve clamp holding the gate valve. The cage-type tilting frame drives the gate valve clamp to tilt.

[0006] Optionally, the inner surface of the clamping module matches the valve cover head, and the clamping module is detachably connected to the clamping frame via a connector.

[0007] Optionally, the clamping frame is further provided with a positioning plate, which has multiple sets of mounting holes from the inside to the outside. The mounting holes are circular and of equal diameter. Multiple positioning pins are evenly arranged in one set of mounting holes. The center of each set of mounting holes is evenly arranged on a first circle, and each set of mounting holes is circumscribed in a second circle. The diameter of the second circle is the same as the inner diameter of the valve body center hole of the defined gate valve.

[0008] Optionally, the conveying mechanism includes a base and a transmission component, the transmission component being rotatably mounted on top of the base.

[0009] Optionally, the transmission component includes a plurality of rotating rollers, which are equidistantly distributed on the top of the base along the direction of movement of the gate valve.

[0010] Optionally, the outer surface of the rotating roller is provided with anti-slip texture.

[0011] Optionally, the clamping mechanism includes two clamping members, which are symmetrically arranged inside the cage-type tilting frame with the horizontal center line of the cage-type tilting frame as the axis of symmetry. Each clamping member includes a clamping frame and two drive rails. The extension direction of the two drive rails is the same as the movement direction of the gate valve, and the two drive rails are located in the same horizontal plane. The two ends of the clamping frame perpendicular to the movement direction of the gate valve are slidably connected to the two drive rails respectively. A position sensor is provided at the end of the clamping frame away from the conveying mechanism. The position sensor is used to detect the distance from the bottom of the gate valve body to the end of the clamping frame away from the conveying mechanism.

[0012] Optionally, the clamping mechanism further includes a guide shaft and a heavy-duty hydraulic cylinder. The heavy-duty hydraulic cylinder is mounted on the main frame, and the movable end of the piston rod of the heavy-duty hydraulic cylinder abuts against the top of the clamping frame. The movement direction of the piston rod is perpendicular to the movement direction of the gate valve clamp. The bottom of the guide shaft is connected to the top of the clamping frame, and the top of the guide shaft passes through the main frame. The extension direction of the guide shaft is parallel to the movement direction of the piston rod. The heavy-duty hydraulic cylinder drives the clamping frame abutting against it to move toward the gate valve clamp. A pressure sensor is provided on the clamping frame, and the pressure sensor is used to detect the pressure of the clamping frame on the gate valve clamp.

[0013] The technical solution provided by this utility model embodiment has the following advantages compared with the prior art: This utility model provides a 180-degree automatic tilting machine for multi-specification heavy-duty nuclear power gate valves. It clamps the gate valve using a clamping module and positioning pins. The inner surface of the clamping module matches the valve cover head of the gate valve, and the shape formed by multiple positioning pins matches the central hole of the valve body, thus achieving gate valve clamping. The clamping module and clamping frame are detachably connected, allowing the clamping module to be customized and replaced according to the gate valve model. By selecting different mounting holes for the positioning pins, the shape formed by the multiple positioning pins can be changed according to the gate valve model, improving the applicability of this tilting machine. A conveying mechanism transports the gate valve clamp into the cage-type tilting frame, where a clamping mechanism clamps the gate valve clamp, improving the stability of the tilting machine. When the cage-type tilting frame tilts, it drives the gate valve clamp to tilt synchronously, thus achieving gate valve tilting. This tilting process requires no manual intervention, improving production safety. Furthermore, it can tilt heavy-duty products without requiring customized design of the tilting machine, reducing costs. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a 180-degree automatic tilting machine for multi-specification heavy-duty nuclear power plant gate valves according to an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This is a schematic diagram of the gate valve clamp disposed on the conveying mechanism according to an embodiment of the present utility model; Figure 4 This is a top view of the gate valve installed in the gate valve fixture according to an embodiment of the present invention.

[0017] The components include: 1. Gate valve clamp; 1.1 Clamping frame; 1.2 Clamping module; 1.3 Positioning pin; 1.4 Positioning plate; 2. Conveying mechanism; 2.1 Base; 2.2 Transmission component; 3. Gate valve; 3.1 Valve cover head; 3.2 Valve body center hole; 4. Cage-type tilting frame; 4.1 Pressing frame; 4.2 Transmission rail; 4.3 Guide shaft; 4.4 Heavy-duty hydraulic cylinder; 4.5 Body frame; 5. Hydraulic station; 6. Electrical control cabinet; 7. Transmission shaft; 8. First guide wheel; 9. First chain; 10. Motor; 11. Second guide wheel; 12. Second chain. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figures 1 to 3 As shown, this embodiment provides a 180-degree automatic tilting machine for heavy-duty nuclear power gate valves of various specifications, including a gate valve clamp 1, a conveying mechanism 2, a cage-type tilting frame 4, a hydraulic station 5, and an electrical control cabinet 6.

[0021] Among them, reference Figure 4As shown, the gate valve clamp 1 includes two clamping frames 1.1 arranged symmetrically on top and bottom. The two clamping frames 1.1 have the same structure and are arranged opposite each other. The two clamping frames 1.1 are fastened together by bolts. Clamping modules 1.2 and multiple positioning pins 1.3 of the same specifications are provided inside the two clamping frames 1.1. The inner surface of the clamping module 1.2 matches the valve cover head 3.1 of the gate valve 3. The clamping module 1.2 is detachably connected to the clamping frame 1.1 through a connector. By setting the clamping module 1.2 to be detachably connected to the clamping frame 1.1, the clamping module 1.2 can be customized and replaced according to the model of the gate valve 3. In this embodiment, the clamping module 1.2 is a semi-circular module. A positioning plate 1.4 is also provided inside the clamping frame 1.1. Multiple sets of mounting pins are arranged from the inside to the outside on the positioning plate 1.4. The mounting holes are circular and of equal diameter. Multiple locating pins 1.3 are evenly arranged in a set of mounting holes. The center of each set of mounting holes is evenly arranged on the first circle, and each set of mounting holes is circumscribed in the second circle. The diameter of the second circle is the same as the inner diameter of the valve body center hole 3.2 of the gate valve 3. By selecting different mounting holes to install the locating pins 1.3, the shape formed by the multiple locating pins 1.3 can be changed according to the model of the gate valve, thereby improving the applicability of this flipping machine. When the two clamping frames 1.1 are closed together, the two clamping modules 1.2 clamp the valve cover head 3.1 of the gate valve 3, and the locating pins 1.3 on the two locating plates 1.4 limit the two sides of the valve body center hole 3.2 of the gate valve 3, thereby realizing the clamping of the gate valve 3 by the gate valve clamp 1.

[0022] Reference Figure 3 As shown, the gate valve clamp 1 is located on top of the conveying mechanism 2. The conveying mechanism 2 is used to convey the gate valve 3 to the flipping position. Specifically, the conveying mechanism 2 includes a base 2.1 and a transmission component 2.2. The base 2.1 is placed on the ground, and the transmission component 2.2 is rotatably located on top of the base 2.1. The transmission component 2.2 includes multiple rotating rollers, which are equidistantly distributed on top of the base 2.1 along the movement direction of the gate valve 3. The rotating rollers are chain-driven to the base 2.1 and are driven to rotate by an AC asynchronous motor. The rotating rollers drive the gate valve clamp 1 to move toward the inside of the cage-type flipping frame 4. Of course, after the gate valve 3 has finished flipping, the rotating rollers move in the opposite direction, thereby driving the gate valve clamp 1 to disengage from the cage-type flipping frame 4. To improve the stability of the movement of the gate valve clamp 1 and prevent the gate valve clamp 1 from deviating, the outer surface of the rotating rollers is provided with anti-slip texture.

[0023] Reference Figure 1 and Figure 2As shown, the cage-type tilting frame 4 has a cage-like structure and is entirely constructed from welded steel plates. The cage-type tilting frame 4 includes a main frame 4.5 and a clamping mechanism. The main frame 4.5 is connected to the conveying mechanism 2. The clamping mechanism is located inside the cage-type tilting frame 4 and includes two clamping components, a guide shaft 4.3, and a heavy-duty hydraulic cylinder 4.4. The two clamping components are symmetrically arranged vertically inside the cage-type tilting frame 4, with the horizontal center line of the cage-type tilting frame 4 as the axis of symmetry. The clamping components include a clamping frame 4.1 and... Two drive rails 4.2 extend in the same direction as the gate valve 3 and are located in the same horizontal plane. The two ends of the clamping frame 4.1, perpendicular to the direction of movement of the gate valve 3, are slidably connected to the two drive rails 4.2. A heavy-duty hydraulic cylinder 4.4 is mounted on the main frame 4.5, and the movable end of the piston rod of the heavy-duty hydraulic cylinder 4.4 abuts against the top of the clamping frame 4.1. The direction of movement of the piston rod is perpendicular to the direction of movement of the gate valve clamp 1. The bottom of the guide shaft 4.3 is connected to the clamping frame 4.1. The top connection is made of the guide shaft 4.3, which passes through the main body frame 4.5. The extension direction of the guide shaft 4.3 is parallel to the movement direction of the piston rod. The hydraulic station 5 provides power to the heavy-duty hydraulic cylinder 4.4 and controls the connection and disconnection of the hydraulic pipeline of the heavy-duty hydraulic cylinder 4.4 through the solenoid valve, thereby controlling the start and stop of the heavy-duty hydraulic cylinder 4.4 to achieve the clamping and releasing of the gate valve clamp 1. When the hydraulic station 5 drives the piston rod of the heavy-duty hydraulic cylinder 4.4 to extend, the piston rod moves along the extension direction of the guide shaft 4.3, and the piston rod drives the clamping frame that abuts against it. The frame 4.1 moves toward the gate valve clamp 1 until the clamping frame 4.1 clamps the gate valve clamp 1. After the clamping frame 4.1 clamps the gate valve clamp 1 and completes a 180° flip, the heavy-duty hydraulic cylinder 4.4 drives the clamping frame 4.1 to retract until the top of the clamping frame 4.1 in contact with the gate valve clamp 1 is flush with the top of the conveying mechanism 2. The gate valve clamp 1 is in a relaxed state, and the transmission rail 4.2 located at the bottom of the gate valve clamp 1 moves. The transmission rail 4.2 drives the flipped gate valve clamp 1 to move onto the conveying mechanism 2, thereby realizing the flipping of the gate valve 3.This flipping machine also includes a flipping mechanism using existing conventional technology. The flipping mechanism includes a drive shaft 7, a motor 10, a second guide wheel 11, a second chain 12, two first guide wheels 8, and a first chain 9. The motor 10 and the drive shaft 7 are both located at the bottom of the main frame 4.5. The second guide wheel 11 is located in the middle of the drive shaft 7. The output shaft of the motor 10 is connected to the second guide wheel 11 via the second chain 12. The two first guide wheels 8 are respectively located at both ends of the drive shaft 7 and rotate synchronously with the drive shaft 7. The two first chains 9 are respectively located on the outer circumference of the main frame 4.5. The first guide wheels 8 are connected to the main frame 4.5 via the first chain 9. The motor 10 drives the second guide wheel 11 to rotate via the second chain 12. The second guide wheel 11 drives the drive shaft 7 to rotate. The drive shaft 7 drives the first guide wheels 8 to rotate synchronously. The first guide wheels 8 are driven by the first chain 9 to rotate the main frame 4.5, thereby realizing the rotation of the cage-type flipping frame 4.

[0024] To determine whether the gate valve clamp 1 has been transported to the correct position, a position sensor is installed at the end of the clamping frame 4.1 furthest from the conveying mechanism 2. The position sensor detects the distance from the bottom of the gate valve 3 to the end of the clamping frame 4.1 furthest from the conveying mechanism 2. The electrical control cabinet 6 integrates a control system that receives the position signal transmitted by the position sensor. A motor is installed on the drive rail 4.2. The conveying mechanism 2 transports the gate valve clamp 1 into the cage-type tilting frame 4 until the bottom of the gate valve clamp 1 contacts the drive rail 4.2. The motor on the drive rail 4.2 drives the drive rail 4.2 to move, and the drive rail 4.2 drives the gate valve clamp 1 to move. When the gate valve 3 reaches the flip position, i.e., the distance from the bottom of the valve body to the end of the clamping frame 4.1 away from the conveying mechanism 2 is zero, the control system stops the AC asynchronous motor and the conveying mechanism 2. The gate valve clamp 1 is transported to the position through the conveying mechanism 2 and the transmission rail 4.2. The gate valve clamp 1 holds the gate valve 3 and completely enters the cage-type flipping frame 4. The cage-type flipping frame 4 begins to clamp and flip the gate valve clamp 1. When the distance from the bottom of the valve body of the gate valve 3 to the end of the clamping frame 4.1 away from the conveying mechanism 2 is equal to the horizontal length of the cage-type flipping frame 4, the gate valve clamp 1 holds the gate valve 3 and completely leaves the cage-type flipping frame 4.

[0025] To prevent excessive pressure on the gate valve clamp 1 from causing workpiece damage, a pressure sensor is installed in the clamping frame 4.1. The pressure sensor is used to detect the pressure of the clamping frame 4.1 on the gate valve clamp 1. The control system is used to receive the pressure signal transmitted by the pressure sensor. When the pressure of the clamping frame 4.1 on the gate valve clamp 1 reaches the threshold, the control system controls the hydraulic station 5 to stop providing power to the heavy-duty hydraulic cylinder 4.4. At this time, the clamping frame 4.1 completes the clamping of the gate valve clamp 1.

[0026] A flexible element is provided on the side of the clamping frame 4.1 facing the gate valve clamp 1. The flexible element protects the gate valve clamp 1 and prevents the gate valve clamp 1 from being damaged when the clamping frame 4.1 exerts pressure on the gate valve clamp 1.

[0027] The specific workflow of this tilting machine is as follows: The gate valve 3 is manually moved to the lower clamping frame, then the upper clamping frame is moved to cover the lower clamping frame, ensuring that the positioning pins 1.3 in both clamping frames 1.1 engage with the center hole 3.2 of the gate valve 3. The upper and lower clamping frames 1.1 are then secured with bolts. The conveying mechanism 2 is activated, and the transmission component 2.2 transports the gate valve clamp 1 into the cage-type tilting frame 4 until the bottom of the gate valve clamp 1 contacts the transmission rail 4.2. The transmission rail 4.2 then moves the gate valve clamp 1 to the tilting position. When the distance from the bottom of the gate valve 3 to the end of the clamping frame 4.1 furthest from the conveying mechanism 2 is zero, the control system stops the AC asynchronous motor and the conveying mechanism 2. At this time, the gate valve clamp 1 is transported to its position via the conveying mechanism 2 and the transmission rail 4.2. The gate valve clamp 1 holds the gate valve 3 and completely enters the cage-type tilting frame 4. The hydraulic station 5 is started, and the hydraulic station 5 provides power to the heavy-duty hydraulic cylinder 4.4. The piston rod of the heavy-duty hydraulic cylinder 4.4 extends and drives the clamping frame 4.1, which is in contact with it, to move towards the gate valve clamp 1. When the pressure of the clamping frame 4.1 on the gate valve clamp 1 reaches the threshold, the control system controls the hydraulic station 5 to stop supplying power to the heavy-duty hydraulic cylinder 4.4. At this time, the clamping frame 4.1 completes the clamping of the gate valve clamp 1, and the cage-type tilting frame 4 starts and tilts 180°, realizing the gate valve clamp 1 driving the gate valve 3 to tilt 180°. The hydraulic station 5 is started, and the heavy-duty hydraulic cylinder 4.4 drives the clamping frame 4.1 to retract. At this time, the gate valve clamp 1 is in a relaxed state, and the transmission rail 4.2 located at the bottom of the gate valve clamp 1 is driven by the motor. The downward movement of the transmission rail 4.2 drives the gate valve clamp 1, after being flipped, to move out of the cage-type flipping frame 4 and onto the conveying mechanism 2. The control system controls the AC asynchronous motor to work, and the AC asynchronous motor drives the conveying mechanism 2 to move. The transmission component 2.2 drives the gate valve clamp 1 to move away from the cage-type flipping frame 4. When the distance from the bottom of the valve body of the gate valve 3 to the end of the clamping component away from the conveying mechanism 2 is the horizontal length of the cage-type flipping frame 4, the gate valve clamp 1 completely leaves the cage-type flipping frame 4, and the flipping operation of the gate valve 3 is completed.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model. Therefore, this utility model is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features of the utility model herein.

Claims

1. A 180-degree automatic tilting machine for multi-specification heavy-duty nuclear power plant gate valves, characterized in that, include: A gate valve clamp (1) includes two clamping frames (1.1) arranged symmetrically on the top and bottom. The two clamping frames (1.1) are provided with a clamping module (1.2) and a plurality of positioning pins (1.3) of the same specification. The clamping module (1.2) is used to clamp the valve cover head (3.1) of the gate valve (3). The plurality of positioning pins (1.3) are used to define the position of the valve body center hole (3.2) of the gate valve (3). The conveying mechanism (2) is provided on the top of the gate valve clamp (1), and the conveying mechanism (2) is used to convey the gate valve (3) to the flip position; The cage-type tilting frame (4) includes a main frame (4.5) and a clamping mechanism. The main frame (4.5) is connected to the conveying mechanism (2). The clamping mechanism is located inside the main frame (4.5). The clamping mechanism is used to clamp the gate valve clamp (1) that holds the gate valve (3). The cage-type tilting frame (4) drives the gate valve clamp (1) to tilt.

2. The 180-degree automatic tilting machine for multi-specification heavy-duty nuclear power plant gate valves according to claim 1, characterized in that, The inner surface of the clamping module (1.2) matches the valve cover head (3.1), and the clamping module (1.2) is detachably connected to the clamping frame (1.1) via a connector.

3. The 180-degree automatic tilting machine for multi-specification heavy-duty nuclear power plant gate valves according to claim 1, characterized in that, The clamping frame (1.1) is also provided with a positioning plate (1.4). The positioning plate (1.4) is provided with multiple sets of mounting holes from the inside to the outside. The mounting holes are circular and of equal diameter. Multiple positioning pins (1.3) are evenly arranged in a set of mounting holes. The center of each set of mounting holes is evenly arranged on the first circle, and each set of mounting holes is circumscribed to the second circle. The diameter of the second circle is the same as the inner diameter of the valve body center hole (3.2) of the gate valve (3).

4. The 180-degree automatic tilting machine for multi-specification heavy-duty nuclear power plant gate valves according to claim 1, characterized in that, The conveying mechanism (2) includes a base (2.1) and a transmission component (2.2), the transmission component (2.2) being rotatably disposed on the top of the base (2.1).

5. The 180-degree automatic tilting machine for multi-specification heavy-duty nuclear power plant gate valves according to claim 4, characterized in that, The transmission component (2.2) includes multiple rotating rollers, which are equidistantly distributed on the top of the base (2.1) along the direction of movement of the gate valve (3).

6. The 180-degree automatic tilting machine for multi-specification heavy-duty nuclear power plant gate valves according to claim 5, characterized in that, The outer surface of the rotating roller is provided with anti-slip texture.

7. The 180-degree automatic tilting machine for multi-specification heavy-duty nuclear power plant gate valves according to claim 1, characterized in that, The clamping mechanism includes two clamping components, which are symmetrically arranged inside the cage-type tilting frame (4) with the horizontal center line of the cage-type tilting frame (4) as the axis of symmetry. Each clamping component includes a clamping frame (4.1) and two transmission rails (4.2). The extension direction of the two transmission rails (4.2) is the same as the movement direction of the gate valve (3), and the two transmission rails (4.2) are located in the same horizontal plane. The two ends of the clamping frame (4.1) perpendicular to the movement direction of the gate valve (3) are slidably connected to the two transmission rails (4.2). A position sensor is provided at the end of the clamping frame (4.1) away from the conveying mechanism (2). The position sensor is used to detect the distance from the bottom of the valve body of the gate valve (3) to the end of the clamping frame (4.1) away from the conveying mechanism (2).

8. The 180-degree automatic tilting machine for multi-specification heavy-duty nuclear power plant gate valves according to claim 7, characterized in that, The clamping mechanism further includes a guide shaft (4.3) and a heavy-duty hydraulic cylinder (4.4). The heavy-duty hydraulic cylinder (4.4) is mounted on the main body frame (4.5), and the movable end of the piston rod of the heavy-duty hydraulic cylinder (4.4) abuts against the top of the clamping frame (4.1). The movement direction of the piston rod is perpendicular to the movement direction of the gate valve clamp (1). The bottom of the guide shaft (4.3) is connected to the top of the clamping frame (4.1). The top of the guide shaft (4.3) passes through the main body frame (4.5). The extension direction of the guide shaft (4.3) is parallel to the movement direction of the piston rod. The heavy-duty hydraulic cylinder (4.4) drives the clamping frame (4.1) abutting against it to move toward the gate valve clamp (1). A pressure sensor is provided on the clamping frame (4.1). The pressure sensor is used to detect the pressure of the clamping frame (4.1) on the gate valve clamp (1).

Images