A kind of clamping jaw device for disassembling test hole screw of power plant boiler primary air

Abstract

The utility model discloses a kind of for power plant boiler primary air test hole screw dismounting's clamping jaw device, including handle portion and chuck portion;The handle portion connects chuck portion, the handle portion is provided with handle, the handle is connected with fixed part by inner shaft, the inner shaft is movably installed in clamping jaw outer arm, one end of the clamping jaw outer arm is provided with support plate, spring is installed between the support plate and fixed part, the chuck portion is provided with static clamping jaw and dynamic clamping jaw, the static clamping jaw is fixedly connected with support plate and fixed part, the dynamic clamping jaw is movably connected with support plate and fixed part, the static clamping jaw and dynamic clamping jaw are all symmetrically distributed.The utility model device overall structure is compact, light in weight, so that operator can more conveniently, quickly load and unload hole screw, improve work efficiency, improve the reliability of experimental result.Meanwhile, avoid hand scald problem, improve the security of operator.

Description

Technical Field

[0001] This utility model belongs to the field of auxiliary tools for power plant boiler performance testing, and in particular, it is a gripper device for disassembling and assembling the screws of the primary air test hole in a power plant boiler. Background Technology

[0002] During power plant boiler performance testing, technicians need to measure the temperature and flow rate of the boiler's primary air. This is because the temperature and flow rate data directly affect key indicators such as boiler combustion stability, thermal efficiency, and pollutant emissions. Any minute measurement deviation can significantly impact the test results, thereby affecting the entire power plant's operational strategy and economic benefits.

[0003] However, the primary air temperature is high and the internal pressure is also high. During boiler operation, the temperature often reaches several hundred degrees Celsius. Such a high-temperature environment causes any object in contact with it to heat up rapidly. At the same time, the high pressure not only increases the difficulty of measurement but also poses a serious threat to the stability of the measuring equipment and the safety of the operators. High-temperature resistant gloves must be worn when opening and closing the measuring holes.

[0004] High-temperature gloves are typically made of special heat-insulating materials, theoretically capable of withstanding high temperatures to some extent. However, they present numerous problems in practical operation. During the installation of the test hole screw, if the screw isn't properly tightened within approximately 5 seconds, even with high-temperature gloves, the rapid heat conduction causes the gloves to be quickly permeated, making the hands unbearably hot and forcing the user to release the grip, resulting in installation failure. This not only wastes significant time but also increases the complexity and uncertainty of the operation, making the entire measurement process extremely inconvenient. Especially in hot summer weather, when operators sweat, the high-temperature gloves become even more sweltering, significantly reducing their protective effect and failing to effectively protect the operator's hands. This hinders the smooth progress of the experiment, increasing the difficulty and safety risks for the operator. Furthermore, this unstable operating environment can easily lead to increased errors in the measurement data, reducing the reliability of the experimental results and posing significant challenges to subsequent boiler performance analysis and optimization. Summary of the Invention

[0005] The purpose of this utility model is to provide a gripper device for disassembling and assembling the screw of the primary air test hole in a power plant boiler, which solves the problem that the opening and closing of the existing primary air test hole plug is greatly affected by high temperature, which increases the difficulty of the work.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A gripper device for disassembling and assembling the test hole screw for primary air testing of power plant boilers, comprising a handle part and a chuck part;

[0008] The handle portion is connected to the chuck portion, and the handle portion is provided with a handle. The handle is connected to a fixing member through an inner shaft. The inner shaft is movably installed inside the outer arm of the gripper. A support plate is provided at one end of the outer arm of the gripper. A spring is installed between the support plate and the fixing member. The chuck portion is provided with a stationary gripper and a movable gripper. The stationary gripper is fixedly connected to both the support plate and the fixing member, and the movable gripper is movably connected to both the support plate and the fixing member. The stationary gripper and the movable gripper are symmetrically distributed.

[0009] Furthermore, the outer arm of the gripper is a hollow structure, and the inner shaft is installed inside the cavity of the outer arm of the gripper.

[0010] Furthermore, the other end of the gripper arm is connected to a handle frame.

[0011] Furthermore, there is a gap between the handle and the handle frame.

[0012] Furthermore, one end of the stationary gripper is fixedly connected to the support plate, and the other end of the stationary gripper is fixedly connected to the fixing member through a connecting piece.

[0013] Furthermore, one end of the movable gripper is movably connected to the support plate, and the other end of the movable gripper is movably connected to the fixing member through a connecting piece.

[0014] Furthermore, both the stationary and moving grippers are equipped with anti-slip pads at their gripping points.

[0015] Furthermore, the handle is provided with an anti-slip texture.

[0016] Furthermore, the surface of the handle is covered with a heat-insulating layer.

[0017] Furthermore, both the support plate and the fixing component are equipped with adjustable fastening mechanisms.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model provides a gripper device for disassembling and assembling screws in primary air testing holes of power plant boilers. By movably mounting an inner shaft within the outer arm of the gripper, the inner shaft can move axially within the outer arm, providing a flexible motion basis for the opening and closing of the gripper. A handle is connected to a fixing component via the inner shaft, directly transmitting the operator's force to the fixing component, thereby controlling the gripper's movement. A support plate is provided at one end of the outer arm of the gripper, and a spring is installed between the support plate and the fixing component. When the operator operates the handle to clamp the screw, the spring is compressed, providing a buffering effect. When the operator releases the handle, the spring force allows the fixing component to automatically return the gripper to the open state, facilitating the next screw clamping and ensuring the stability and reliability of the gripper device. Static and movable grippers are symmetrically mounted on the fixing component. The static grippers are fixedly connected to both the support plate and the fixing component, providing a stable clamping reference for the gripper device and ensuring a stable clamping force when clamping screws. The movable gripper is movably connected to the support plate and the fixing component. Through the movement of the inner shaft and the fixing component, it can open and close relative to the stationary gripper. This combination of dynamic and static design allows the gripper to accurately grip and loosen screws, improving operational precision, reducing measurement errors, and enhancing the reliability of experimental results. The device has a compact overall structure and is lightweight, allowing operators to easily and quickly install and remove screws from the measuring holes. Even when screws are difficult to remove, the gripper provides stable operation without the risk of hand burns, thus improving work efficiency. Furthermore, the gripper replaces traditional high-temperature gloves, avoiding hand burns caused by inadequate glove protection and improving operator safety.

[0020] Furthermore, the support plate and fixing components are equipped with adjustable fastening devices to accommodate screws of different sizes. When larger screws need to be clamped, the fastening mechanism can be loosened to increase the opening between the jaws; when smaller screws need to be clamped, the fastening mechanism can be tightened to decrease the opening between the jaws. This adjustable design makes the clamping device highly versatile and can meet the disassembly and assembly needs of the test hole screws for primary air testing in different power plant boilers.

[0021] Furthermore, the handle is equipped with a heat insulation layer and an anti-slip texture. The heat insulation layer can effectively prevent the operator's hands from being exposed to high temperatures, and the anti-slip texture can prevent the device from slipping, ensuring the safety of operation and further improving the user experience and operational stability of the gripper. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the clamping device for disassembling and assembling the test hole screws for primary air testing of power plant boilers according to the present invention.

[0024] Figure 2 This is a schematic diagram of the clamping part of this utility model.

[0025] Wherein: 1-Gripper outer arm, 2-Handle, 3-Static gripper, 4-Moving gripper, 5-Connecting piece, 6-Handle outer frame, 7-Inner shaft, 8-Spring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The present invention will now be described in further detail with reference to the accompanying drawings:

[0033] See Figure 1 This utility model provides a gripper device for disassembling and assembling the test hole screw for primary air testing of power plant boilers, including a handle part and a chuck part, with the handle part connected to the chuck part.

[0034] The handle assembly includes a gripper arm 1, a handle 2, a handle frame 6, and an inner shaft 7. The gripper arm 1 has a hollow structure, and the inner shaft 7 is movably installed within the cavity of the gripper arm 1. This hollow structure not only reduces the overall weight of the device, facilitating prolonged handheld operation, but also provides space for the installation and movement of the inner shaft 7. A support plate is provided at one end of the gripper arm 1, providing a stable mounting base for the chuck. The other end of the gripper arm 1 connects to the handle frame 6, providing support and protection for the installation and operation of the handle 2, and facilitating gripping and operation. The handle 2 is connected to one end of the inner shaft 7, and a gap exists between the handle 2 and the handle frame 6, allowing the handle 2 to swing relative to the handle frame 6 to a certain extent. By gripping the handle 2 and applying external force, the operator can achieve axial movement of the inner shaft 7. The handle 2 has anti-slip textures to increase friction during gripping and prevent the gripper assembly from slipping during operation. These anti-slip textures can be designed with raised and recessed patterns, evenly distributed on the surface of the handle 2, effectively increasing the coefficient of friction between the operator's hand and the handle 2. The surface of the handle 2 is covered with a heat insulation layer made of high-temperature resistant and heat-insulating materials, such as ceramic fiber, which can effectively prevent the operator's hand from being subjected to high temperature conduction, protecting the operator's hand safety.

[0035] like Figure 2 As shown, the chuck assembly includes a stationary jaw 3, a movable jaw 4, a connecting piece 5, and a spring 8. The other end of the inner shaft 7 is connected to a fixing member. The spring 8 is installed between the fixing member and the support plate. When the operator releases the handle 2, the chuck assembly automatically returns to its open state, facilitating the next screw gripping. The stationary jaw 3 and movable jaw 4 are symmetrically distributed, providing a uniform clamping force when gripping screws, ensuring balanced force on the screws and preventing slippage. One end of the stationary jaw 3 is fixedly connected to the support plate, and the other end is fixedly connected to the fixing member via the connecting piece 5, ensuring a relatively fixed position for the stationary jaw 3 and providing a stable clamping reference for the chuck assembly. One end of the movable jaw 4 is movably connected to the support plate, and the other end is movably connected to the fixing member via the connecting piece 5. By pulling the handle 2, the inner shaft 7 can reciprocate axially within the outer arm 1 of the jaws. The fixing member drives the movable jaw 4 to open and close relative to the stationary jaw 3, thereby achieving the gripping and loosening of the screws. Both the stationary jaw 3 and the moving jaw 4 are equipped with anti-slip pads. The surfaces of these anti-slip pads are designed with special textured shapes, such as wavy or serrated, to increase friction with the screw surface, ensuring a tight grip and preventing the screw from falling off during operation. The support plate and fixing components are equipped with adjustable fastening mechanisms. Through threaded adjustment, snap-fit ​​adjustment, or other methods, the opening and closing of the jaws can be adjusted to accommodate screws of different sizes, providing strong versatility.

[0036] The method of using the clamping device for disassembling and assembling the test hole screws for primary air testing in power plant boilers according to this utility model:

[0037] When it is necessary to open the primary air test hole of the power plant boiler, the operator holds the handle frame 6 of the gripper device and adjusts the fastening mechanism to make the shape and size of the gripper adapt to the test hole screw.

[0038] Adjust the position of the jaws, align them with the test hole screw, and pull the handle 2 backward. This causes the inner shaft 7 to move axially within the outer arm 1 of the jaws. The spring 8 is compressed, and the fixing component causes the moving jaw 4 to close relative to the stationary jaw 3, tightly gripping the screw. Then, rotate the jaws using the handle 2 to loosen the screw. During the loosening process, if significant resistance is encountered, the operator can apply force steadily without worrying about burning their hands.

[0039] Once the screw is completely loosened, use the clamps to remove it, completing the opening of the test hole.

[0040] After completing a wind temperature and flow measurement, when it is necessary to close the measuring hole, the operator uses the clamps again to align the screw with the measuring hole and screws the screw into the measuring hole until it is tightened.

[0041] After the operation is completed, when the operator releases handle 2, the elastic force of spring 8 will cause the fixing part to drive the inner shaft 7 to move axially, the moving jaw 4 will open relative to the stationary jaw 3, the jaw screws will loosen, and the jaw will be placed in a safe position for the next use.

[0042] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gripper device for disassembling and assembling screws for primary air testing holes in power plant boilers, characterized in that, Includes the handle and the chuck; The handle part is connected to the chuck part. The handle part is provided with a handle (2). The handle (2) is connected to a fixing member through an inner shaft (7). The inner shaft (7) is movably installed in the outer arm (1) of the jaw. A support plate is provided at one end of the outer arm (1). A spring (8) is installed between the support plate and the fixing member. The chuck part is provided with a stationary jaw (3) and a movable jaw (4). The stationary jaw (3) is fixedly connected to the support plate and the fixing member. The movable jaw (4) is movably connected to the support plate and the fixing member. The stationary jaw (3) and the movable jaw (4) are symmetrically distributed.

2. The gripper device for disassembling and assembling the test hole screw for primary air testing in a power plant boiler according to claim 1, characterized in that, The outer arm (1) of the gripper is a hollow structure, and the inner shaft (7) is installed in the cavity of the outer arm (1).

3. The gripper device for disassembling and assembling the test hole screw for primary air testing in a power plant boiler according to claim 1, characterized in that, The other end of the gripper arm (1) is connected to the handle frame (6).

4. The gripper device for disassembling and assembling the test hole screw for primary air testing in a power plant boiler according to claim 3, characterized in that, There is a gap between the handle (2) and the handle frame (6).

5. A gripper device for disassembling and assembling the test hole screw for primary air testing in a power plant boiler, as described in claim 1, is characterized in that... One end of the static gripper (3) is fixedly connected to the support plate, and the other end of the static gripper (3) is fixedly connected to the fixing member through the connecting piece (5).

6. The gripper device for disassembling and assembling the test hole screw for primary air testing in a power plant boiler according to claim 1, characterized in that, One end of the movable gripper (4) is movably connected to the support plate, and the other end of the movable gripper (4) is movably connected to the fixing member through the connecting piece (5).

7. A gripper device for disassembling and assembling the test hole screw for primary air testing in a power plant boiler, as described in claim 1, is characterized in that... The gripping parts of both the static gripper (3) and the moving gripper (4) are provided with anti-slip pads.

8. A gripper device for disassembling and assembling the test hole screw for primary air testing in a power plant boiler, as described in claim 1, is characterized in that... The handle (2) is provided with an anti-slip texture.

9. A gripper device for disassembling and assembling the test hole screw for primary air testing in a power plant boiler, as described in claim 1, is characterized in that... The surface of the handle (2) is covered with a heat insulation layer.

10. A gripper device for disassembling and assembling the test hole screw for primary air testing in a power plant boiler, as described in claim 1, is characterized in that... Both the support plate and the fixing component are equipped with adjustable fastening mechanisms.

Images