Auxiliary assembly device for propeller governor weight assembly and method of use

Abstract

The application discloses an auxiliary assembling device for a propeller speed regulator counterweight assembly and a use method, relates to the technical field of speed regulator installation tools, and comprises a positioning pin, a base, a clamping assembly and a pressing bolt. The positioning pin is used for being arranged in mounting holes of a counterweight arm and two rollers to form a pre-assembled part. The base is provided with a first connecting hole and a first limiting surface, and a through hole is formed in the first limiting surface. One end of the clamping assembly is provided with a second connecting hole, and the other end is provided with a clamping groove. The pressing bolt is threadedly connected in the first connecting hole through the second connecting hole. The end of the clamping assembly with the clamping groove can be rotated above the first limiting surface. A gap between the first limiting surface and the end of the clamping assembly with the clamping groove is used for placing the pre-assembled part. The axis of the clamping groove is coaxial with the axes of the positioning pin and the through hole. Time and labor are saved, and the installation work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of governor installation tools, and in particular to an auxiliary assembly device and method for using a propeller governor counterweight assembly. Background Technology

[0002] Speed ​​governor counterweights play a crucial role in mechanical systems. They are primarily used to regulate operating speed to adapt to different working conditions and requirements. By altering the machine's moment of inertia or torque, speed governor counterweights control its rotational speed. This helps ensure the machine maintains a stable operating speed under various load conditions, improving its efficiency and performance. Furthermore, speed governor counterweights also balance the machine, reducing vibration and noise.

[0003] The installation of the counterweight arm and two rollers of the counterweight assembly requires convenience and flexibility, but currently most of them are installed manually. Since the counterweight assembly is a small part, and the mounting pins used to connect the counterweight arm and the two rollers are installed in the mounting holes of the counterweight arm and rollers with an interference fit, manual installation is time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0004] The purpose of this invention is to provide an auxiliary assembly device and method for a propeller governor counterweight assembly, so as to solve the problems existing in the prior art, save time and effort, and improve the efficiency of installation work.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides an auxiliary assembly device for a propeller governor counterweight assembly, comprising a positioning pin, a base, a clamping assembly, and a clamping bolt; the positioning pin is used to pass through the mounting holes of the counterweight arm and two rollers, and the outer diameter of the positioning pin is smaller than the inner diameter of the mounting holes of the counterweight arm and rollers; the counterweight arm and two rollers with the positioning pin form a pre-installed part; the base is provided with a first connecting hole and a first limiting surface, and a through hole is formed on the first limiting surface; the clamping assembly includes a first clamping claw and a second clamping claw, the first clamping claw having a first end and a second end, the second clamping claw having a third end and a fourth end, and a second connecting hole being formed on the first end of the first clamping claw and the third end of the second clamping claw; the second end of the first clamping claw... Both the first clamping claw and the fourth end of the second clamping claw are provided with clamping grooves for placing the mounting pin; the threaded end of the clamping bolt passes through the second connecting holes of the first clamping claw and the second clamping claw in sequence and is threaded into the first connecting hole; after loosening the clamping bolt, both the first clamping claw and the second clamping claw can rotate around the axis of the clamping bolt; and the second end of the first clamping claw and the fourth end of the second clamping claw can rotate around the axis of the clamping bolt to above the first limiting surface; the gap between the first limiting surface and the second end of the first clamping claw and the fourth end of the second clamping claw is used to place the pre-installed part; the axis of the clamping groove can be coaxial with the axis of the positioning pin and the through hole.

[0007] Preferably, it also includes a limiting pin; the base is provided with a first limiting hole for bottom sealing, and the first clamping claw and the second clamping claw are provided with a second limiting hole; when the limiting pin is located in the second limiting hole and the first limiting hole, the second end of the first clamping claw and the fourth end of the second clamping claw are both located above the first limiting surface, and neither the first clamping claw nor the second clamping claw can rotate around the axis of the clamping bolt.

[0008] Preferably, the base includes a base and a positioning block; the base is provided with a first through hole and a first receiving hole for bottom sealing; the positioning block is provided with a second through hole and a third through hole; after one end of the base is connected to one end of the positioning block, the first through hole and the second through hole are connected, and the inner diameters of the first through hole and the second through hole are the same; the first receiving hole and the third through hole are connected, and the inner diameters of the first receiving hole and the third through hole are the same; the first through hole and the second through hole together form the through hole; the third through hole and the first receiving hole together form the first limiting hole.

[0009] Preferably, a washer is also fitted onto the clamping bolt.

[0010] Preferably, a third limiting hole is provided at the end of the clamping groove away from the through hole; the third limiting hole is coaxial with the clamping groove and one end is connected; the end of the third limiting hole near the through hole has a second limiting surface; the third limiting hole is used to accommodate the end of the mounting pin, and the second limiting surface can restrict the end of the mounting pin from moving towards the side closer to the through hole along the axial direction of the clamping groove.

[0011] Preferably, both ends of the positioning pin can extend into the mounting holes at the end of the counterweight arm.

[0012] The present invention also provides a method for using an auxiliary assembly device for a propeller governor counterweight assembly based on any one of the above claims, comprising the following steps:

[0013] S1, the base is fixedly clamped on the caliper in a horizontal position with respect to the axis of the through hole;

[0014] S2, the positioning pin is inserted into the mounting holes of the counterweight arm and the two rollers, so that the whole assembly forms the pre-installed part;

[0015] S3, place the pre-installed component assembled in S2 between the end of the clamping assembly away from the clamping bolt and the first limiting surface, and tighten the clamping bolt to press and fix the pre-installed component at the end of the clamping assembly away from the clamping bolt;

[0016] S4, one end of the mounting pin is inserted into the clamping groove, and by applying external force to the end of the mounting pin, the mounting pin is moved along the axial direction of the through hole and inserted into the pre-installed part.

[0017] The present invention achieves the following technical effects compared to the prior art:

[0018] The auxiliary assembly device for the counterweight assembly of a propeller governor provided by this invention uses a positioning pin slightly smaller than the mounting holes on the counterweight arm and the two rollers. This pin is manually inserted directly to pre-install the counterweight arm and the two rollers. Then, the pre-installed components are placed on the base and pressed and fixed by the first limiting surface and the end of the clamping assembly away from the clamping bolt (i.e., the second end of the first clamping claw and the fourth end of the second clamping claw). Finally, the mounting pin is inserted into the clamping groove, and an external force is applied to the end of the mounting pin to secure it. The locating pin is gradually pushed out and inserted into the counterweight arm and two rollers to complete the assembly connection. The locating pin serves as a guide for the installation pin, ensuring the coaxiality of the mounting holes of the counterweight arm and two rollers. Since the mounting pin is installed in the mounting holes of the counterweight arm and two rollers with an interference fit, and the components are relatively small, manual installation is inconvenient. By adopting the above-mentioned auxiliary assembly device for the counterweight assembly of the propeller governor, the installation can be made more convenient, flexible, time-saving, labor-saving, and efficient.

[0019] Furthermore, the setting of the limiting pin can restrict the rotation of the first clamping claw and the second clamping claw around the axis of the clamping bolt. Firstly, it can ensure that the center of the clamping groove coincides with the center of the through hole, thus facilitating the installation of the mounting pin. Secondly, it can ensure that the end of the clamping component away from the clamping bolt can be firmly pressed against one side of the counterweight arm, ensuring a good pressing effect.

[0020] Furthermore, the base consists of two parts: a base and a positioning block. After the counterweight arm and the two rollers are connected to the mounting pin, the base can be removed to expose the lower end of the limiting pin, making it easy to remove the limiting pin. When the base is placed vertically with the axis of the first through hole, the positioning pin located in the first through hole can fall out and be removed.

[0021] Furthermore, the washers allow the clamping bolts to have a certain elastic clamping effect, thereby preventing the end of the clamping assembly away from the clamping bolts from rigidly pressing against the counterweight arm and causing damage to the counterweight arm.

[0022] Furthermore, the third limiting hole can restrict the installation position of the mounting pin, making it easy to install in place.

[0023] Furthermore, both ends of the positioning pin have end mounting holes that extend out to the counterweight arm, which facilitates placement in the through holes and clamping grooves, allowing for more precise clamping.

[0024] The present invention also provides a method for using an auxiliary assembly device for a propeller governor counterweight assembly based on any of the above. The device utilizes a positioning pin to pre-install the counterweight arm and two rollers, and then fixes the pre-installed parts to the clamping assembly and the first limiting surface. With the help of external force applied to the end of the mounting pin, the mounting pin can be installed more quickly and efficiently under the guidance of the positioning pin, saving time and effort and improving work efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the overall structure of the auxiliary assembly device for the counterweight assembly of a propeller governor provided by the present invention.

[0027] Figure 2 A cross-sectional structural schematic diagram of the auxiliary assembly device for the counterweight assembly of a propeller governor provided by the present invention.

[0028] Figure 3 for Figure 1 Top view.

[0029] In the picture:

[0030] 100 - Auxiliary assembly device for propeller governor counterweight components;

[0031] 10-Base; 11-Staple; 111-First through hole; 112-First receiving hole; 12-Positioning block; 121-First limiting surface; 122-First connecting hole; 123-Second through hole; 124-Third through hole;

[0032] 20-Positioning pin;

[0033] 30-Clamping assembly; 31-First clamping claw; 32-Second clamping claw; 33-Second connecting hole; 34-Clamping groove; 341-Third limiting hole; 342-Second limiting surface; 35-Second limiting hole;

[0034] 40 - Clamping bolt; 41 - Washer;

[0035] 50-Limit pin;

[0036] 60-Counterweight arm;

[0037] 70-Roller. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] The purpose of this invention is to provide an auxiliary assembly device and method for a propeller governor counterweight assembly, so as to solve the problems existing in the prior art, save time and effort, and improve the efficiency of installation work.

[0040] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Example 1

[0042] This embodiment provides an auxiliary assembly device 100 for a propeller governor counterweight assembly, such as... Figures 1-3 As shown, the assembly includes a positioning pin 20, a base 10, a clamping assembly 30, and a clamping bolt 40. The positioning pin 20 is used to pass through the mounting holes of the counterweight arm 60 and the two rollers 70, and the outer diameter of the positioning pin 20 is smaller than the inner diameter of the mounting holes of the counterweight arm 60 and the rollers 70. The counterweight arm 60 and the two rollers 70 with the positioning pin 20 form a pre-installed part. The base 10 is provided with a first connecting hole 122 and a first limiting surface 121, and a through hole is opened on the first limiting surface 121. The clamping assembly 30 includes a first clamping claw 31 and a second clamping claw 32. The first clamping claw 31 has a first end and a second end, and the second clamping claw 32 has a third end and a fourth end. The first end of the first clamping claw 31 and the third end of the second clamping claw 32 are both provided with a second connecting hole 33. The second end of the claw 31 and the fourth end of the second clamping claw 32 are both provided with clamping grooves 34 for placing the mounting pin; the threaded end of the clamping bolt 40 passes through the second connecting holes 33 of the first clamping claw 31 and the second clamping claw 32 and is threaded into the first connecting hole 122; after loosening the clamping bolt 40, the first clamping claw 31 and the second clamping claw 32 can rotate around the axis of the clamping bolt 40 respectively; and the second end of the first clamping claw 31 and the fourth end of the second clamping claw 32 can rotate around the axis of the clamping bolt 40 to above the first limiting surface 121; the gap between the first limiting surface 121 and the second end of the first clamping claw 31 and the fourth end of the second clamping claw 32 is used to place the pre-installed part; the axis of the clamping groove 34 can be coaxial with the axis of the positioning pin 20 and the through hole.

[0043] Using a positioning pin 20 slightly smaller than the mounting holes on the counterweight arm 60 and the two rollers 70, the counterweight arm 60 and the two rollers 70 are manually inserted to pre-install them. Then, the pre-installed components are placed on the base 10 and pressed and fixed by the first limiting surface 121 and the end of the clamping assembly 30 away from the clamping bolt 40 (i.e., the second end of the first clamping claw 31 and the fourth end of the second clamping claw 32). Next, the mounting pin is inserted into the clamping groove 34, and by applying external force to the end of the mounting pin, it is gradually pushed out of the positioning pin 20 and inserted through... The assembly connection is completed on the counterweight arm 60 and the two rollers 70; the positioning pin 20 is used as a guide for the installation pin, and the positioning pin 20 can ensure the coaxial effect of the mounting holes of the counterweight arm 60 and the two rollers 70; since the mounting pin is installed in the mounting holes of the counterweight arm 60 and the two rollers 70 by interference fit, and the component size is small, it is inconvenient to install it manually. By adopting the above-mentioned auxiliary assembly device 100 for the counterweight component of the propeller governor, the installation can be more convenient, flexible, time-saving, labor-saving and improve the efficiency of the installation work.

[0044] Specifically, the clamping groove 34 can be opened and closed: taking the opening of the clamping groove 34 as an example, the first clamping claw 31 can rotate to one side around the axis of the clamping bolt 40, and the second clamping claw 32 can rotate to the opposite side around the axis of the clamping bolt 40, thereby opening the clamping groove 34.

[0045] Regarding the implementation method of clamping the clamping component 30 to one side of the counterweight arm 60:

[0046] Specifically, the method of pressing the end of the clamping component 30 away from the clamping bolt 40 onto the counterweight arm 60 includes, but is not limited to, the following two methods: First, based on the clamping bolt 40's ability to lock the clamping component 30, the clamping component 30 can achieve this by using the frictional force between the clamping component 30 and the base 10, and one side of the counterweight arm 60, thereby pressing the end of the clamping component 30 away from the clamping bolt 40 onto one side of the counterweight arm 60 (specifically, a flexible layer can also be provided on the pressing surface of the end of the clamping component 30 away from the clamping bolt 40 used to press against one side of the counterweight arm 60, which has two functions: first, it can increase the friction between it and one side of the counterweight arm 60; second, it can reduce frictional damage caused by rigid contact on the pressing side of the counterweight arm 60); Second, the relative position of the end of the clamping component 30 away from the clamping bolt 40 can also be achieved by using the limiting pin 50, as detailed below:

[0047] Among the optional solutions in this embodiment, the more preferred one is as follows: Figures 1-3As shown, it also includes a limiting pin 50; the base 10 is provided with a first limiting hole for bottom sealing, and the first clamping claw 31 and the second clamping claw 32 are provided with a second limiting hole 35; when the limiting pin 50 is located in the second limiting hole 35 and the first limiting hole, the second end of the first clamping claw 31 and the fourth end of the second clamping claw 32 are both located above the first limiting surface 121, and neither the first clamping claw 31 nor the second clamping claw 32 can rotate around the axis of the clamping bolt 40. The setting of the limiting pin 50 can restrict the rotation of the first clamping claw 31 and the second clamping claw 32 around the axis of the clamping bolt 40. Firstly, it can ensure that the center of the clamping groove 34 coincides with the center of the through hole, thereby facilitating the installation of the mounting pin; secondly, it can ensure that the end of the clamping assembly 30 away from the clamping bolt 40 can be firmly pressed on one side of the counterweight arm 60, ensuring a good pressing effect.

[0048] The structure of the base 10 is as follows:

[0049] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 and Figure 2 As shown, the base 10 includes a base 11 and a positioning block 12; the base 10 is provided with a first through hole 111 and a first receiving hole 112 with bottom sealing; the positioning block 12 is provided with a second through hole 123 and a third through hole 124; after one end of the base 11 is connected to one end of the positioning block 12, the first through hole 111 and the second through hole 123 are connected, and the inner diameters of the first through hole 111 and the second through hole 123 are the same; the first receiving hole 112 and the third through hole 124 are connected, and the inner diameters of the first receiving hole 112 and the third through hole 124 are the same; the first through hole 111 and the second through hole 123 together form a through hole; the third through hole 124 and the first receiving hole 112 together form a first limiting hole. The base 10 consists of two parts: a base 11 and a positioning block 12. After the counterweight arm 60 and the two rollers 70 are connected to the mounting pin, the base 11 can be removed to expose the lower end of the limiting pin 50, making it easy to remove the limiting pin 50. When the base 11 is placed vertically with the axis of the first through hole 111, the positioning pin 20 located in the first through hole 111 can fall out and be removed.

[0050] The fittings installed on the clamping bolt 40 are as follows:

[0051] Among the optional solutions in this embodiment, the more preferred one is as follows: Figures 1-3 As shown, a washer 41 is also fitted on the clamping bolt 40. The washer 41 enables the clamping bolt 40 to have a certain elastic clamping effect, thereby preventing the end of the clamping assembly 30 away from the clamping bolt 40 from rigidly pressing against the counterweight arm 60 and causing damage to the counterweight arm 60.

[0052] To ensure the insertion position of the mounting pin within the mounting hole of the counterweight arm 60 is limited, the following settings can also be made:

[0053] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 2 As shown, a third limiting hole 341 is provided at the end of the clamping groove 34 away from the through hole; the third limiting hole 341 is coaxial with the clamping groove 34 and connected at one end; the end of the third limiting hole 341 near the through hole has a second limiting surface 342. The third limiting hole 341 is used to accommodate the end of the mounting pin, and the second limiting surface 342 can restrict the end of the mounting pin from moving towards the side closer to the through hole along the axial direction of the clamping groove 34. The setting of the third limiting hole 341 can restrict the installation position of the mounting pin, making it convenient to install it in place.

[0054] To ensure that the pre-installed components can be stably and quickly placed on the auxiliary assembly device 100 for the propeller governor counterweight assembly, the following configuration may also be provided:

[0055] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 2 As shown, both ends of the positioning pin 20 extend into the mounting holes at the ends of the counterweight arm 60. The positioning pin 20's two ends are designed to extend into the mounting holes at the ends of the counterweight arm 60, facilitating its placement within the through holes and clamping grooves 34 for more precise clamping.

[0056] Regarding the structure of the clamping assembly 30:

[0057] Specifically, the first clamping claw 31 is provided with a first semi-circular clamping groove 34 at the end away from the clamping bolt 40; the second clamping claw 32 is provided with a second semi-circular clamping groove 34 at the end away from the clamping bolt 40; the first semi-circular clamping groove 34 and the second semi-circular clamping groove 34 are at the same height in their axial direction, and the first semi-circular clamping groove 34 and the second semi-circular clamping groove 34 together form a clamping groove 34 that can be opened and closed.

[0058] Regarding other settings:

[0059] Specifically, in order to reduce contact friction damage to the counterweight arm 60, a flexible layer can be provided on the contact surface of the auxiliary assembly device 100 for clamping the counterweight arm 60.

[0060] Specifically, to improve assembly speed, tapered guide slopes can be provided at the ends of the positioning pin 20 and the limiting pin 50 to facilitate the quick installation of the positioning pin 20 and the limiting pin 50 into the corresponding holes.

[0061] Example 2

[0062] This embodiment provides a method for using the auxiliary assembly device 100 for the counterweight assembly of a propeller governor based on Embodiment 1, including the following steps:

[0063] S1, Fix the base 10 horizontally on the caliper with the axis of the hole in place;

[0064] S2, the positioning pin 20 is inserted into the mounting holes of the counterweight arm 60 and the two rollers 70, so that the whole assembly forms a pre-installed part;

[0065] S3, place the pre-installed component assembled in S2 between the end of the clamping assembly 30 away from the clamping bolt 40 and the first limiting surface 121, and tighten the clamping bolt 40 to press and fix the pre-installed component at the end of the clamping assembly 30 away from the clamping bolt 40.

[0066] S4, one end of the mounting pin is inserted into the clamping groove 34, and by applying external force to the end of the mounting pin, the mounting pin moves along the axis of the through hole and is inserted into the pre-installed part.

[0067] Specifically, after the mounting pins are installed on the counterweight arm 60 and the two rollers 70, the base 10 can be removed from the caliper first, and then the base 11 can be disengaged from the positioning block 12. At this time, the lower end of the limit pin 50 is exposed. The operator removes the positioning pin 20 and loosens the clamping bolt 40, so that the assembled counterweight arm 60, the two rollers 70 and the mounting pin are separated from the auxiliary assembly device 100 for the propeller governor counterweight assembly.

[0068] The counterweight arm 60 and two rollers 70 are pre-installed using the positioning pin 20. Then, the pre-installed parts are fixed by the clamping assembly 30 and the first limiting surface 121. With the help of external force applied to the end of the mounting pin, the mounting pin can be installed more quickly and efficiently under the guidance of the positioning pin 20, saving time and effort and improving work efficiency.

[0069] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An auxiliary assembly device for a propeller governor counterweight assembly, characterized in that: Includes locating pins, base, clamping components, and clamping bolts; The positioning pin is used to pass through the mounting holes of the counterweight arm and the two rollers, and the outer diameter of the positioning pin is smaller than the inner diameter of the mounting holes of the counterweight arm and the rollers; the counterweight arm and the two rollers equipped with the positioning pin form a pre-installed part. The base is provided with a first connecting hole and a first limiting surface, and a through hole is provided on the first limiting surface; The clamping assembly includes a first clamping claw and a second clamping claw. The first clamping claw has a first end and a second end, and the second clamping claw has a third end and a fourth end. The first end of the first clamping claw and the third end of the second clamping claw are both provided with a second connecting hole. The second end of the first clamping claw and the fourth end of the second clamping claw are both provided with clamping grooves for placing mounting pins. The threaded end of the clamping bolt passes through the second connecting holes of the first clamping claw and the second clamping claw in sequence and is threaded into the first connecting hole; after the clamping bolt is loosened, the first clamping claw and the second clamping claw can rotate around the axis of the clamping bolt respectively; Furthermore, the second end of the first clamping claw and the fourth end of the second clamping claw can both rotate around the axis of the clamping bolt to above the first limiting surface; the gap between the first limiting surface and the second end of the first clamping claw and the fourth end of the second clamping claw is used to place the pre-installed part; The axis of the clamping groove can be coaxial with the axis of the positioning pin and the through hole.

2. The auxiliary assembly device for the counterweight assembly of a propeller governor according to claim 1, characterized in that: It also includes limit pins; The base is provided with a first limiting hole for bottom sealing, and the first clamping claw and the second clamping claw are provided with second limiting holes; When the limiting pin is located in the second limiting hole and the first limiting hole, the second end of the first clamping claw and the fourth end of the second clamping claw are both located above the first limiting surface, and neither the first clamping claw nor the second clamping claw can rotate around the axis of the clamping bolt.

3. The auxiliary assembly device for the counterweight assembly of a propeller governor according to claim 2, characterized in that: The base includes a base and a positioning block; The base is provided with a first through hole and a first receiving hole for bottom sealing; the positioning block is provided with a second through hole and a third through hole; After one end of the base is connected to one end of the positioning block, the first through hole is connected to the second through hole, and the inner diameters of the first through hole and the second through hole are the same; the first receiving hole is connected to the third through hole, and the inner diameters of the first receiving hole and the third through hole are the same. The first through hole and the second through hole together form the perforation; the third through hole and the first receiving hole together form the first limiting hole.

4. The auxiliary assembly device for the counterweight assembly of a propeller governor according to claim 1, characterized in that: A washer is also fitted onto the clamping bolt.

5. The auxiliary assembly device for the counterweight assembly of a propeller governor according to claim 1, characterized in that: A third limiting hole is provided at the end of the clamping groove away from the through hole; The third limiting hole is coaxial with the clamping groove and is connected at one end; the end of the third limiting hole near the through hole has a second limiting surface; The third limiting hole is used to accommodate the end of the mounting pin, and the second limiting surface can restrict the end of the mounting pin from moving towards the side closer to the through hole along the axial direction of the clamping groove.

6. The auxiliary assembly device for the counterweight assembly of a propeller governor according to claim 1, characterized in that: Both ends of the positioning pin can extend into the mounting holes at the end of the counterweight arm.

7. A method of using an auxiliary assembly device for a propeller governor counterweight assembly based on any one of claims 1 to 6, characterized in that: Includes the following steps: S1, the base is fixedly clamped on the caliper in a horizontal position with respect to the axis of the through hole; S2, the positioning pin is inserted into the mounting holes of the counterweight arm and the two rollers, so that the whole assembly forms the pre-installed part; S3, place the pre-installed component assembled in S2 between the end of the clamping assembly away from the clamping bolt and the first limiting surface, and tighten the clamping bolt to press and fix the pre-installed component at the end of the clamping assembly away from the clamping bolt; S4, one end of the mounting pin is inserted into the clamping groove, and by applying external force to the end of the mounting pin, the mounting pin is moved along the axial direction of the through hole and inserted into the pre-installed part.

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