Installation auxiliary device for pin seat of damper test bench

Abstract

The utility model discloses an installation auxiliary device for a pin seat of a damper test bench, the damper test bench comprises a test bench main body, a large cylinder connecting rod and a pin seat, and the large cylinder connecting rod is connected with the test bench main body; the installation auxiliary device comprises a first connecting section, a supporting and guiding section, a transition section and an operation section, and the first connecting section, the supporting and guiding section, the transition section and the operation section are sequentially connected and fixed. The end, facing the pin seat, of the large cylinder connecting rod is provided with a connecting part, and the first connecting section is detachably connected with the connecting part. The pin seat is provided with an inner screw hole, the outer diameter of the supporting guide section is matched with the hole diameter of the inner screw hole to guide the pin seat to move, the size of the transition section is smaller than that of the supporting guide section so as to be in butt joint with the pin seat quickly, and the size of the operation section is smaller than or equal to that of the transition section so as to avoid the pin seat. According to the utility model, the industrial safety risks such as finger squeezing and clamping injury and falling and crushing injury in the replacement process of different pin bosses of the damper test bed can be eliminated, the pin boss replacement working efficiency is improved, and the safety production of a power plant is assisted.

Description

Technical Field

[0001] This utility model relates to the field of damper testing technology, and in particular to an auxiliary device for installing a damper test bench pin seat. Background Technology

[0002] Nuclear power plant dampers are roughly divided into 7 models according to the load size. Each model has a different damper lug size, and the pins and pins required for damper testing are different. The pins on the damper test bench need to be replaced frequently.

[0003] The damper test bench is equipped with three types of pin seats made of cast iron, weighing 30 / 35 / 40kg respectively, which are connected to the cylinder connecting rod by threads. Due to the heavy weight of the pin seats, there are the following difficulties in disassembly and assembly: (1) Threaded connection, difficult to align, must be perfectly aligned for installation; (2) When rotating to align, it is easy to lose force, and it is impossible to lift due to rotation, with a high risk of falling; (3) Small working space, difficult to exert force.

[0004] Therefore, during the damper test during overhaul, there is a high risk of industrial safety such as finger pinching and injury from falling pins during the replacement of the damper test bench pin seat. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an auxiliary device for installing the pin seat of a damper test bench.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an auxiliary device for installing a damper test bench pin seat, wherein the damper test bench includes a test bench body, a large cylinder connecting rod and a pin seat, the large cylinder connecting rod being connected to the test bench body; and includes a first connecting section, a support and guide section, a transition section and an operating section, wherein the first connecting section, the support and guide section, the transition section and the operating section are sequentially connected and fixed.

[0007] The large cylinder connecting rod has a connecting part at one end facing the pin seat, and the first connecting section is detachably connected to the connecting part; the pin seat has an internal threaded hole, the outer diameter of the supporting guide section matches the diameter of the internal threaded hole to guide the pin seat to move, the size of the transition section is smaller than the size of the supporting guide section to quickly engage the pin seat, and the size of the operating section is smaller than or equal to the size of the transition section to avoid the pin seat.

[0008] In some embodiments, the first connecting segment is screwed to the connecting portion.

[0009] In some embodiments, the first connecting segment is a screw and the connecting part is a screw hole.

[0010] In some embodiments, the maximum outer diameter of the support guide section is less than or equal to the minimum bore diameter of the pin seat.

[0011] In some embodiments, the support guide section is a cylindrical structure with a smooth outer surface.

[0012] In some embodiments, the axial length of the support guide section is greater than or equal to the hole length of the pin seat.

[0013] In some embodiments, the outer diameter of the transition section increases from the operating section to the support guide section.

[0014] In some embodiments, the operating segment is a drive head.

[0015] In some embodiments, the operating segment is a square head, a hexagonal head, or a dodecagonal head.

[0016] In some embodiments, the first connecting segment, the supporting and guiding segment, the transition segment, and the operating segment are integrally formed.

[0017] By implementing this utility model, the following beneficial effects can be achieved:

[0018] This utility model discloses an auxiliary device for installing a pin seat on a damper test bench. The damper test bench includes a test bench body, a large cylinder connecting rod, and a pin seat. The large cylinder connecting rod is connected to the test bench body. The installation auxiliary device includes a first connecting section, a support guiding section, a transition section, and an operating section. The first connecting section, the support guiding section, the transition section, and the operating section are sequentially connected and fixed. The large cylinder connecting rod has a connecting portion at one end facing the pin seat, and the first connecting section is detachably connected to the connecting portion. The pin seat has an internal threaded hole. The outer diameter of the support guiding section matches the diameter of the internal threaded hole to guide the movement of the pin seat. The size of the transition section is smaller than the size of the support guiding section for quick engagement with the pin seat. The size of the operating section is smaller than or equal to the size of the transition section to avoid the pin seat. The first connecting section is connected and fixed to the connecting portion of the large cylinder connecting rod through the operating section, providing an overall support foundation. The pin seat quickly engages through the transition section and enters the support guiding section, realizing the movement guidance of the pin seat while supporting the overall weight of the pin seat, ultimately assisting in the screwing and fixing of the pin seat to the large cylinder connecting rod. The installation auxiliary device has a simple structure and plays an auxiliary support and guiding role in the replacement and installation of pin seats. It can eliminate industrial safety risks such as pinching and crushing fingers and falling and hitting injuries during the replacement of different pin seats on the damper test bench, improve the efficiency of pin seat replacement work, and help power plant safe production. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the installation auxiliary device according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A schematic diagram illustrating the usage of the installation auxiliary device. Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this 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 of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 a chemical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] See Figure 1 and Figure 2One embodiment of this utility model discloses an installation auxiliary device for a damper test bench pin seat. The damper test bench includes a test bench body, a large cylinder connecting rod 5, and a pin seat 7, with the large cylinder connecting rod 5 connected to the test bench body. The installation auxiliary device includes a first connecting section 1, a support and guide section 2, a transition section 3, and an operating section 4, which are sequentially connected and fixed.

[0027] The large cylinder connecting rod 5 has a connecting part 6 at one end facing the pin seat 7, and the first connecting section 1 is detachably connected to the connecting part 6. The pin seat 7 has an internal threaded hole 8, and the outer diameter of the support guide section 2 matches the diameter of the internal threaded hole 8 to guide the movement of the pin seat 7. The size of the transition section 3 is smaller than the size of the support guide section 2 to quickly engage with the pin seat 7, and the size of the operating section 4 is smaller than or equal to the size of the transition section 3 to avoid the pin seat 7.

[0028] The installation auxiliary device is small in size and much lighter than the pin seat 7, making it much simpler and easier to connect to the cylinder connecting rod 5. This installation auxiliary device reduces the reliance of the pin seat 7 on operators or cranes, eliminating the need for operators to provide support during the screwing process between the pin seat 7 and the cylinder connecting rod 5. It completely solves the problem of easy force release during rotational connection, reducing the risk of falling.

[0029] In some embodiments, the first connecting segment 1 and the connecting portion 6 are screwed together. The first connecting segment 1 may be a screw and the connecting portion 6 a threaded hole, or the first connecting segment 1 may be a screw and the connecting portion 6 a threaded hole. It is understood that in other embodiments, the first connecting segment 1 and the connecting portion 6 may be designed as a quick-connect structure or a pin structure.

[0030] In some embodiments, the maximum outer diameter of the support guide section 2 is less than or equal to the minimum diameter of the internal threaded hole 8. The outer diameter of the support guide section 2 matches the hole diameter of the pin seat 7, and is used to support and guide the pin seat 7 toward the large cylinder connecting rod 5. The minimum diameter of the internal threaded hole 8 typically refers to the minor diameter of the internal thread, i.e., the diameter at the location of the thread root. It is a critical dimension ensuring that bolts or screws can be screwed in smoothly without interfering with the thread.

[0031] In some embodiments, the support guide section 2 is a cylindrical structure with a smooth outer surface, which matches the hole shape of the pin seat 7. Understandably, in other embodiments, the support guide section 2 may also be designed as a plate structure, with the two opposite outer surfaces of the plate being arc-shaped.

[0032] In some embodiments, the axial length of the support guide section 2 is greater than or equal to the hole length of the pin seat 7. This ensures a sufficient support path and prevents the pin seat 7 from falling due to gravity when it mates with the cylinder connecting rod 5.

[0033] In some embodiments, the outer diameter of the transition section 3 increases from the operating section 4 to the support guide section 2. That is, the outer diameter of the transition section 3 decreases from the support guide section 2 to the operating section 4, with a smaller outer diameter at the end closer to the operating section 4. This helps the pin seat 7 to align with the support guide section 2, facilitating quick docking.

[0034] In some embodiments, the operating segment 4 is a drive head used to dock with the tool to drive and tighten the first connecting segment 1 and the connecting part 6. The operating segment 4 can be a square head, a hexagonal head, or a dodecagonal head.

[0035] In some embodiments, the first connecting segment 1, the supporting and guiding segment 2, the transition segment 3, and the operating segment 4 are integrally formed. This structure is simple and enhances stability.

[0036] like Figure 2 The diagram shown illustrates the usage of the installation auxiliary device. The installation auxiliary device is a simplified diagram; transition section 3 and operating section 4 are not shown. When replacing the pin seat 7, first, screw the installation auxiliary device to the large cylinder connecting rod 5. Use a crane to lift the pin seat 7 to the same height as the installation auxiliary device and push it towards the installation auxiliary device. Since the outer diameter of transition section 3 is smaller than the hole diameter of pin seat 7, it can easily pass through. The outer diameter of the end of transition section 3 near operating section 4 is also smaller, allowing easy access to transition section 3. After reaching the support guide section 2, the support guide section 2 provides support, freeing up the crane. When rotating the pin seat 7 and screwing it to the large cylinder connecting rod 5, no crane support is required.

[0037] By implementing this utility model, the following beneficial effects can be achieved:

[0038] This utility model discloses an auxiliary device for installing pin seats on a damper test bench. Through operation section 4, the first connecting section 1 is connected and fixed to the connecting part 6 of the large cylinder connecting rod 5, providing an overall support foundation. The pin seat 7 quickly engages through transition section 3 and enters the support guide section 2, guiding the movement of the pin seat 7 while supporting its overall weight. Finally, the auxiliary device helps to screw the pin seat 7 to the large cylinder connecting rod 5. The installation auxiliary device has a simple structure and provides auxiliary support and guidance during the replacement and installation of the pin seat 7. It can eliminate industrial safety risks such as pinching injuries to fingers and falling injuries during the replacement of different pin seats 7 on the damper test bench, improve the efficiency of pin seat 7 replacement, and contribute to safe production in power plants.

[0039] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, without departing from the concept of the present utility model, the above embodiments or technical features can be freely combined, and several modifications and improvements can be made. These all fall within the protection scope of the present utility model, that is, the embodiments described "in some embodiments" can be freely combined with any of the embodiments above and below. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. An auxiliary device for installing a pin seat on a damper test bench, the damper test bench comprising a test bench body, a large cylinder connecting rod (5) and a pin seat (7), the large cylinder connecting rod (5) being connected to the test bench body; characterized in that, It includes a first connecting section (1), a support and guide section (2), a transition section (3), and an operating section (4), wherein the first connecting section (1), the support and guide section (2), the transition section (3), and the operating section (4) are connected and fixed in sequence; The large cylinder connecting rod (5) has a connecting part (6) at one end facing the pin seat (7), and the first connecting section (1) is detachably connected to the connecting part (6); the pin seat (7) has an internal threaded hole (8), the outer diameter of the support guide section (2) matches the diameter of the internal threaded hole (8) to guide the pin seat (7) to move, the size of the transition section (3) is smaller than the size of the support guide section (2) to quickly engage the pin seat (7), and the size of the operating section (4) is smaller than or equal to the size of the transition section (3) to avoid the pin seat (7).

2. The installation auxiliary device for the damper test bench pin seat according to claim 1, characterized in that, The first connecting segment (1) is screwed and fixed to the connecting part (6).

3. The installation auxiliary device for the damper test bench pin seat according to claim 2, characterized in that, The first connecting section (1) is a screw and the connecting part (6) is a screw hole.

4. The installation auxiliary device for the damper test bench pin seat according to claim 1, characterized in that, The maximum outer diameter of the support guide section (2) is less than or equal to the minimum diameter of the internal threaded hole (8).

5. The installation auxiliary device for the damper test bench pin seat according to claim 4, characterized in that, The supporting guide section (2) is a cylindrical structure with a smooth outer surface.

6. The installation auxiliary device for the damper test bench pin seat according to claim 1, characterized in that, The axial length of the support guide section (2) is greater than or equal to the hole length of the pin seat (7).

7. The installation auxiliary device for the damper test bench pin seat according to claim 1, characterized in that, The outer diameter of the transition section (3) increases from the operating section (4) to the support guide section (2).

8. The installation auxiliary device for the damper test bench pin seat according to claim 1, characterized in that, The operation segment (4) is the drive head.

9. The installation auxiliary device for the damper test bench pin seat according to claim 8, characterized in that, The operation segment (4) is square-headed, hexagonal-headed, or dodecagonal-headed.

10. The installation auxiliary device for the damper test bench pin seat according to any one of claims 1-9, characterized in that, The first connecting section (1), the supporting and guiding section (2), the transition section (3), and the operating section (4) are integrally formed structures.

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