Mechanical limiting structure of harmonic reducer

Abstract

The utility model relates to the technical field of harmonic speed reducers, and discloses a harmonic speed reducer mechanical limiting structure which comprises a speed reducer shell, a rigid wheel and a limiting block, the shell comprises a main body part and a limiting part, the outer side face of the rigid wheel abuts against the limiting part, a plane is arranged on the side, facing the rigid wheel, of the main body part, and one end face of the rigid wheel abuts against the plane. The limiting block is arranged in the rigid wheel and abuts against the rigid wheel, and the limiting block is fixedly connected with the shell. The rigid wheel is limited by adopting a mechanical structure, so that the rigid wheel is convenient to disassemble and assemble, and the mechanical impact bearing capability is strong.

Description

Technical Field

[0001] This utility model relates to the field of harmonic reducer technology, and in particular to a mechanical limiting structure for a harmonic reducer. Background Technology

[0002] Harmonic reducers are widely used in aerospace, energy, marine, shipbuilding, bionic machinery, and transportation due to their advantages such as large transmission ratio, high load capacity, high transmission accuracy, and high transmission efficiency. Their superiority is even more evident in servo systems with particularly high dynamic performance. In certain specific operating environments, the transmission components of a harmonic reducer are required to perform reciprocating motion within a fixed angular range. In such cases, limiting the transmission components of the harmonic reducer is necessary. Besides control through the control program, setting mechanical limits is also a crucial limiting method.

[0003] However, the mechanical limiters of harmonic reducers on the market either lack sufficient load-bearing strength to meet the requirements of customers' high-intensity use environments, are inconvenient to install and disassemble, or have too large a size, affecting the installation space of the harmonic reducer. Therefore, there is an urgent need in the market for a harmonic reducer mechanical limit structure that is easy to install and has high load-bearing strength to solve these problems of traditional harmonic reducers. Utility Model Content

[0004] The purpose of this invention is to provide a mechanical limiting structure for a harmonic reducer, which is easy to disassemble and assemble and has a strong ability to withstand mechanical impact.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A mechanical limiting structure for a harmonic reducer includes a reducer housing, a rigid wheel, and a limiting block. The housing includes a main body and a limiting part. The outer side of the rigid wheel abuts against the limiting part. A flat surface is provided on the side of the main body facing the rigid wheel. One end face of the rigid wheel abuts against the flat surface. The limiting block is disposed inside the rigid wheel and abuts against the rigid wheel. The limiting block is fixedly connected to the housing.

[0007] As a further feature of this utility model, the main body is provided with an installation groove, and a portion of the limiting block is located in the installation groove, while the other portion extends out of the installation groove and abuts against the inside of the rigid wheel.

[0008] As a further feature of this invention, the mounting groove is provided along the inner arc of the rigid wheel, the shape of the limiting block is set to an arc that matches the mounting groove, and the outer side of the limiting block abuts against the inner wall of the rigid wheel.

[0009] As a further feature of this invention, the limiting block is fitted with the mounting groove in a transitional manner.

[0010] As a further feature of this utility model, the limiting block is provided with a first connecting hole, and the main body is coaxially provided with a second connecting hole. A locking element is provided in the first connecting hole and the second connecting hole, and the locking element fixes the limiting block and the main body together.

[0011] As a further feature of this invention, the locking element includes a fixing screw, and the interiors of the first connecting hole and the second connecting hole are provided with threads that match the fixing screw.

[0012] As a further feature of this invention, each limiting block is provided with at least two sets of fixing screws.

[0013] As a further feature of this invention, the threaded surface of the fixing screw is provided with thread-locking adhesive.

[0014] As a further feature of this invention, the mounting slots are provided in two sets, and each mounting slot is provided with a matching limiting block.

[0015] As a further feature of this invention, the two sets of mounting grooves and limiting blocks are symmetrically distributed along the diameter of the rigid wheel.

[0016] The beneficial effects of this utility model are:

[0017] When mechanically limiting the rigid wheel, firstly, one end face of the rigid wheel is abutted against the plane of the main body of the housing, and the outer side of the rigid wheel is abutted against the limiting part. After the rigid wheel is placed, the limiting block is abutted against the inner side of the rigid wheel and fixedly connected to the main body. Through the limiting action of the limiting part, the main body, and the limiting block, the rigid wheel is mechanically limited. In this process, the housing, the steel wheel, and the limiting block are installed in a distributed manner, making the installation very convenient. In addition, because the contact area between the limiting block and the rigid wheel is large, the limiting block can better limit and support the rigid wheel, thereby enabling the steel wheel to withstand stronger mechanical impacts and have a longer service life. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional structural diagram of this embodiment;

[0020] Figure 2 This is a partial cross-sectional structural diagram of this embodiment;

[0021] In the figure, 1 is the shell, 11 is the main body, 12 is the limiting part, 13 is the mounting groove, 2 is the rigid wheel, and 3 is the limiting block. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] A mechanical limiting structure for a harmonic reducer, reference Figure 1 and Figure 2 The device includes a reducer housing 1, a rigid wheel 2, and a limiting block 3. The housing 1 includes a main body 11 and a limiting part 12. The outer side of the rigid wheel 2 abuts against the limiting part 12. A flat surface is provided on the side of the main body 11 facing the rigid wheel 2. One end face of the rigid wheel 2 abuts against the flat surface. The limiting block 3 is disposed inside the rigid wheel 2 and abuts against the rigid wheel 2. The limiting block 3 is fixedly connected to the housing 1.

[0024] By adopting the above structure, firstly, one end face of the rigid wheel 2 abuts against the plane of the main body 11 of the housing 1, and the outer side of the rigid wheel 2 abuts against the limiting part 12. After the rigid wheel 2 is placed, the limiting block 3 abuts against the inner side of the rigid wheel 2, and the limiting block 3 is fixedly connected to the main body 11. Through the limiting effect of the limiting part 12, the main body 11, and the limiting block 3, the rigid wheel 2 is mechanically limited. In this process, the housing 1, the steel wheel, and the limiting block 3 are installed in a distributed manner, making the installation very convenient. In addition, since the contact area between the limiting block 3 and the rigid wheel 2 is large, the limiting block 3 can better limit and support the rigid wheel 2, thereby enabling the steel wheel to withstand stronger mechanical impacts and have a longer service life.

[0025] Furthermore, the main body 11 has an installation groove 13, a portion of the limiting block 3 is located in the installation groove 13, and the other portion extends out of the installation groove 13 and abuts against the inside of the rigid wheel 2.

[0026] By setting the mounting slot 13, the limit block 3 can be limited, and installation can be made convenient.

[0027] Furthermore, the mounting groove 13 is set along the inner arc of the rigid wheel 2, and the shape of the limiting block 3 is set to match the arc of the mounting groove 13, with the outer side of the limiting block 3 abutting against the inner wall of the rigid wheel 2.

[0028] Setting the mounting groove 13 and the limiting block 3 to an arc that matches the inner wall of the rigid wheel 2 can better fit the limiting block 3 with the rigid wheel 2 and enhance the limiting effect. Setting the mounting groove 13 to an arc can make the limiting block 3 easier to install.

[0029] Furthermore, the limiting block 3 and the mounting groove 13 are in transitional fit.

[0030] The use of transition fit significantly improves the accuracy of the mechanical limit angle, making the limit structure more effective.

[0031] Furthermore, the limiting block 3 is provided with a first connecting hole, and the main body 11 is coaxially provided with a second connecting hole. A locking element is provided in the first connecting hole and the second connecting hole, and the locking element fixes the limiting block 3 and the main body 11 together.

[0032] Furthermore, the locking element includes a fixing screw, and the interiors of connecting hole one and connecting hole two are provided with threads that match the fixing screw.

[0033] Furthermore, the threaded surface of the fixing screw is provided with thread-locking adhesive.

[0034] Furthermore, each limiting block 3 is provided with at least two sets of fixing screws. Through the action of the two fixing screws, the limiting block 3 can be made more secure and will not be displaced.

[0035] Furthermore, the mounting slots 13 are provided in two sets, and each mounting slot 13 is provided with a matching limit block 3.

[0036] In another embodiment, the two sets of mounting slots 13 and the limiting blocks 3 are located symmetrically on the rigid wheel 2. The symmetrical arrangement can improve the limiting effect, ensure that the limiting blocks 3 will not be displaced during operation, and improve the load-bearing capacity of the mechanical limit.

[0037] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mechanical limiting structure for a harmonic reducer, characterized in that: The device includes a reducer housing (1), a rigid wheel (2), and a limiting block (3). The housing (1) includes a main body (11) and a limiting part (12). The outer side of the rigid wheel (2) abuts against the limiting part (12). A flat surface is provided on the side of the main body (11) facing the rigid wheel (2). One end face of the rigid wheel (2) abuts against the flat surface. The limiting block (3) is disposed inside the rigid wheel (2) and abuts against the rigid wheel (2). The limiting block (3) is fixedly connected to the housing (1).

2. The mechanical limiting structure for a harmonic reducer according to claim 1, characterized in that: The main body (11) has an installation groove (13), and one part of the limiting block (3) is located in the installation groove (13), while the other part extends out of the installation groove (13) and abuts against the inside of the rigid wheel (2).

3. The mechanical limiting structure for a harmonic reducer according to claim 2, characterized in that: The mounting groove (13) is set along the inner arc of the rigid wheel (2), and the shape of the limiting block (3) is set to match the arc of the mounting groove (13). The outer side of the limiting block (3) abuts against the inner wall of the rigid wheel (2).

4. The mechanical limiting structure for a harmonic reducer according to claim 3, characterized in that: The limiting block (3) and the mounting groove (13) are in transition fit.

5. The mechanical limiting structure for a harmonic reducer according to claim 4, characterized in that: The limiting block (3) is provided with a first connecting hole, and the main body (11) is coaxially provided with a second connecting hole. A locking element is provided in the first connecting hole and the second connecting hole, and the locking element fixes the limiting block (3) and the main body (11) together.

6. The mechanical limiting structure for a harmonic reducer according to claim 5, characterized in that: The locking element includes a fixing screw, and the interior of the first connecting hole and the second connecting hole are provided with threads that match the fixing screw.

7. The mechanical limiting structure for a harmonic reducer according to claim 6, characterized in that: Each limit block (3) has at least two sets of fixing screws.

8. The mechanical limiting structure for a harmonic reducer according to claim 7, characterized in that: The threaded surface of the fixing screw is provided with thread-locking adhesive.

9. A harmonic reducer mechanical limiting structure according to any one of claims 2-8, characterized in that: The mounting slots (13) are provided in two sets, and each mounting slot (13) is provided with a matching limit block (3).

10. The mechanical limiting structure for a harmonic reducer according to claim 8, characterized in that: The two sets of mounting slots (13) and limiting blocks (3) are symmetrically distributed along the diameter of the rigid wheel (2).

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