A slotted bolt and special-shaped part mounting tool

Abstract

This application provides a tool for installing grooved bolts and irregularly shaped parts, including: a handle, a stepped shaft, a sheath, a connector, and an elastic element. The handle is detachably connected to the stepped shaft. The main body of the stepped shaft has a stepped structure, and the end of the main body away from the handle has a support for supporting irregularly shaped parts. The sheath passes through the support and is sleeved on the main body of the stepped shaft, and the sheath can move along the main body of the stepped shaft. The connector is detachably connected to the end of the sheath away from the stepped shaft, and the connector has a tapered through hole through which irregularly shaped parts can pass, allowing the connector to be inserted into the blind hole of the grooved bolt. The elastic element is sleeved on the main body of the stepped shaft, with one end abutting against the handle and the other end abutting against the sheath. This application allows for the quick installation of irregularly shaped parts into grooved bolts, avoids wear on the plating layer of the blind hole surface at the bottom end of the grooved bolt, improves the pass rate of the grooved bolt after installation of irregularly shaped parts, and thus extends the service life of the grooved bolt.

Description

Technical Field

[0001] This application belongs to the field of fastener assembly and connection technology, and in particular relates to a tool for installing grooved bolts and irregularly shaped parts. Background Technology

[0002] In aerospace and other fields, different environments have different requirements for bolt surface coatings. Some environments require bolts to be coated with an oxide coating, some require anti-corrosion coatings, and some require coatings with extremely high hardness, etc. These coatings with different performance requirements provide high levels of protection for fasteners. Therefore, only when the bolt surface coating is not worn can the bolt's service life be maximized.

[0003] In fields such as aerospace equipment assembly, certain fasteners are assembled from slotted bolts and irregularly shaped parts. Currently, the installation tools for irregularly shaped parts are integrated units consisting of a handle and a uniform-diameter shaft. When installing irregularly shaped parts, no effective protection measures are taken for the blind hole at the bottom end face of the slotted bolt; the irregularly shaped part is directly pushed into the blind hole using the installation tool. Because the inner diameter of the blind hole at the bottom end face of the slotted bolt is small, while the irregularly shaped part is relatively large, the irregularly shaped part will wear down the plating on the surface of the blind hole at the bottom end face of the slotted bolt during the process of pushing it in, thus reducing the service life of the slotted bolt. Therefore, the current method of directly pushing irregularly shaped parts into the blind hole at the bottom end face of the slotted bolt using the current installation tool easily increases the scrap rate of the product. Summary of the Invention

[0004] In view of this, this application aims to provide a tool for installing grooved bolts and irregularly shaped parts, in order to solve the problem of high wear rate of the surface plating at the blind hole on the bottom end face of the grooved bolt when installing irregularly shaped parts.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0006] This application provides a tool for installing grooved bolts and irregularly shaped parts, including:

[0007] Handle, stepped shaft, sheath, connector, and elastic element;

[0008] The handle is detachably connected to the stepped shaft. The main body of the stepped shaft has a stepped structure, and the end of the main body away from the handle is provided with a support for supporting the irregularly shaped part.

[0009] The sheath penetrates the support body and is sleeved on the main body of the stepped shaft. The sheath can move along the main body of the stepped shaft.

[0010] The connector is detachably connected to the end of the sheath away from the stepped shaft, and the connector has a tapered through hole through which the irregular part can pass. The connector can be inserted into the blind hole of the grooved bolt.

[0011] The elastic element is sleeved on the body of the stepped shaft, one end of the elastic element abuts against the handle, and the other end abuts against the shaft sheath;

[0012] In response to manipulation of the handle, the stepped shaft, and the sheath, the irregular part is inserted into the blind hole of the grooved bolt, and one end of the irregular part is engaged in the through hole provided on the side wall of the grooved bolt.

[0013] Furthermore, one end of the handle is provided with an internal threaded hole;

[0014] The main body includes a first connecting rod, one end of which is provided with an external thread, and the first connecting rod is threadedly connected to the handle.

[0015] The first connecting rod has a boss at one end away from the handle, and the boss is fixedly connected to the support body.

[0016] Furthermore, the support body includes a second connecting rod, which is fixedly connected to the boss. The second connecting rod has a through hole to form two support arms with a split structure.

[0017] A support portion is connected between the two support arms, and the support portion is located at the end of the two support arms away from the boss.

[0018] Furthermore, the sheath includes a first sleeve and a second sleeve, the first sleeve and the second sleeve being connected by two parallel connecting plates;

[0019] The second sleeve has an internal thread.

[0020] Furthermore, the outer diameters of the first sleeve and the second sleeve are equal, and the inner diameter of the first sleeve is equal to the diameter of the first connecting rod, wherein the diameter of the first connecting rod is smaller than the diameter of the handle;

[0021] The height of the first sleeve is greater than the height of the second sleeve.

[0022] Furthermore, the connector includes a main body, a protruding ring, and a protruding portion, wherein the main body, the protruding ring, and the protruding portion are integrally formed.

[0023] The main body is provided with an external thread, which engages with the internal thread of the second sleeve, and a tapered through hole is provided inside the main body;

[0024] The protrusion has an inner hole that communicates with the tapered through hole.

[0025] Furthermore, the diameter of the protrusion matches the diameter of the blind hole of the grooved bolt, and is smaller than the diameter of the main body and the protruding ring;

[0026] The diameter of the main body is smaller than the diameter of the convex ring.

[0027] Furthermore, the inner diameter of the protrusion is larger than the diameter of the second connecting rod.

[0028] Furthermore, the elastic element is a compression spring, one end of which abuts against one end face of the handle, and the other end of which abuts against the end face of the first sleeve near the handle.

[0029] Furthermore, the length of the through hole on the second connecting rod is greater than the length of the irregular part.

[0030] Compared with the prior art, the grooved bolt and irregular part installation tool described in this application has the following advantages:

[0031] The grooved bolt and irregular part installation tool described in this application has a simple structure and is easy for operators to use. It enables the irregular part to be quickly and accurately pushed into the blind hole opened on the bottom end face of the grooved bolt through the stepped shaft, and avoids the irregular part directly contacting the blind hole on the bottom end face of the grooved bolt and abrading the surface coating. This improves the pass rate of the grooved bolt after the irregular part is installed, thereby increasing the service life of the grooved bolt. Attached Figure Description

[0032] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0033] Figure 1 This is a schematic diagram of a grooved bolt and irregular part installation tool structure according to an embodiment of this application;

[0034] Figure 2 This is a planar sectional view of a tool for installing grooved bolts and irregularly shaped parts according to an embodiment of this application;

[0035] Figure 3 This is a schematic diagram of the stepped shaft structure described in the embodiments of this application;

[0036] Figure 4 This is a schematic diagram of the shaft sheath structure described in an embodiment of this application;

[0037] Figure 5This is a planar sectional view of the sheath as described in the embodiment of this application;

[0038] Figure 6 This is a planar sectional view of the connector described in the embodiment of this application;

[0039] Figure 7 This is a schematic diagram of the irregularly shaped part before deformation, as described in the embodiments of this application.

[0040] Figure 8 This is a schematic diagram of the deformed structure of the irregularly shaped part described in the embodiments of this application;

[0041] Figure 9 This is a schematic diagram of the grooved bolt structure described in the embodiments of this application;

[0042] Figure 10 This is a planar sectional view of the grooved bolt and irregularly shaped part before installation, as described in the embodiments of this application.

[0043] Figure 11 This is a planar sectional view of the grooved bolt and irregularly shaped part after installation, as described in the embodiments of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1-Handle; 2-Stepped shaft; 21-First connecting rod; 22-Boss; 23-Second connecting rod; 24-Through hole; 25-Support part; 3-Sheath; 31-First sleeve; 32-Connecting plate; 33-Second sleeve; 4-Connecting piece; 41-Main body; 42-Protruding ring; 43-Protrusion; 44-Tapered through hole; 45-Inner hole; 5-Elastic element; 6-Irregular part; 61-First connecting part; 62-Second connecting part; 7-Slotted bolt; 71-Blind hole; 72-Through hole. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0047] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] Please see Figure 1 and Figure 2 As shown, this embodiment provides a grooved bolt 7 and an installation tool for irregularly shaped parts, including:

[0049] Handle 1, stepped shaft 2, shaft sheath 3, connector 4, and elastic element 5;

[0050] The handle 1 is detachably connected to the stepped shaft 2. The main body of the stepped shaft 2 has a stepped structure, and the end of the main body away from the handle 1 is provided with a support for supporting the irregular part 6.

[0051] The sheath 3 penetrates the support body and is sleeved on the main body of the stepped shaft 2. The sheath 3 can move along the main body of the stepped shaft 2.

[0052] The connector 4 is detachably connected to the end of the sheath 3 away from the stepped shaft 2, and the connector 4 has a tapered through hole 44 through which the irregular part 6 can pass. The connector 4 can be inserted into the blind hole 71 of the grooved bolt 7.

[0053] The elastic element 5 is sleeved on the main body of the stepped shaft 2. One end of the elastic element 5 abuts against the handle 1, and the other end abuts against the shaft sheath 3.

[0054] In response to the operation of the handle 1, the stepped shaft 2 and the sheath 3, the irregular part 6 is inserted into the blind hole 71 of the grooved bolt 7, and one end of the irregular part 6 is locked into the through hole 72 opened on the side wall of the grooved bolt 7.

[0055] The tool for installing a slotted bolt 7 and a shaped part 6 described in this embodiment enables the shaped part 6 to be quickly and accurately pushed into the blind hole 71 on the bottom end face of the slotted bolt 7 via the stepped shaft 2. This avoids direct contact between the shaped part 6 and the blind hole 71 on the bottom end face of the slotted bolt 7, as well as the wear of the surface plating. This improves the pass rate of the slotted bolt 7 after the shaped part 6 is installed, thereby increasing the service life of the slotted bolt 7.

[0056] In some implementations, such as Figure 2 As shown, one end of the handle 1 has an internal threaded hole;

[0057] like Figure 3 As shown, the main body includes a first connecting rod 21, one end of which is provided with an external thread, and the first connecting rod is threadedly connected to the handle 1;

[0058] The first connecting rod 21 has a boss 22 at the end away from the handle 1, and the boss 22 is fixedly connected to the support body.

[0059] The support body includes a second connecting rod 23, which is fixedly connected to the boss 22. A through hole 24 is provided on the second connecting rod 23 to form two support arms with a split structure.

[0060] A support portion 25 is connected between the two support arms, and the support portion 25 is located at the end of the two support arms away from the boss 22.

[0061] Specifically, in this embodiment, the stepped shaft 2 includes four parts: the first part is the first connecting rod 21, the second part is the boss 22, the third part is the second connecting rod 23, and the fourth part is the support part 25. One end of the first connecting rod 21 has a thread on its outer circular surface, which engages with the internal threaded hole of the handle 1. Both the first connecting rod 21 and the boss 22 are cylindrical structures with smooth outer circular surfaces. The diameter of the boss 22 is larger than the diameter of the first connecting rod 21. The first connecting rod 21 is used to support the elastic element 5 and the shaft sheath 3. When the boss 22 is pulled out of the stepped shaft 2, it can drive the shaft sheath 3 to move. The second connecting rod 23 is provided on the boss 22 and provides a support arm for supporting the support part 25. The support part 25 is used to hook the irregular part 6. The through hole 24 provided on the second connecting rod 23 is used to provide a cavity for placing the irregular part 6, and its length is greater than the length of the irregular part 6.

[0062] In some implementations, such as Figure 4 and Figure 5 As shown, the shaft sheath 3 includes a first sleeve 31 and a second sleeve 33, and the first sleeve 31 and the second sleeve 33 are connected by two parallel connecting plates 32.

[0063] The second sleeve 33 has an internal thread;

[0064] The outer diameters of the first sleeve 31 and the second sleeve 33 are equal, and the inner diameter of the first sleeve 31 is equal to the diameter of the first connecting rod 21. The diameter of the first connecting rod 21 is smaller than the diameter of the handle 1.

[0065] The height of the first sleeve 31 is greater than the height of the second sleeve 33.

[0066] Specifically, in this embodiment, both the first sleeve 31 and the second sleeve 33 are circular sleeves, and the outer diameter of the first sleeve 31 and the second sleeve 33 is the same.

[0067] The second sleeve 33 has an internal thread and a shallower depth to allow for the insertion of shorter connecting parts, thus saving material. The inner circle of the first sleeve 31 is a smooth through hole with a greater depth, used to restrict the radial movement of the stepped shaft 2.

[0068] In some implementations, such as Figure 6 As shown, the connector 4 includes a main body 41, a protruding ring 42, and a protruding part 43, which are integrally formed.

[0069] The main body 41 is provided with external threads, which are matched with the internal threads of the second sleeve 33. A tapered through hole 44 is provided inside the main body 41.

[0070] The protrusion 43 has an inner hole 45 that communicates with the tapered through hole 44. The diameter of the inner hole 45 of the protrusion 43 is larger than the diameter of the second connecting rod 23.

[0071] The diameter of the protrusion 43 matches the diameter of the blind hole 71 of the grooved bolt 7, and is smaller than the diameter of the main body 41 and the protruding ring 42.

[0072] The diameter of the main body 41 is smaller than the diameter of the convex ring 42.

[0073] Specifically, in this embodiment, the connector 4 is a nylon ring made of nylon material. The outer diameter of the protrusion 43 is the smallest, and the inner diameter is a through hole of equal diameter. The outer diameter of the main body 41 is larger than that of the protrusion 43. The outer surface of the main body 41 is provided with threads, which are used to cooperate with the internal threads provided on the sheath 3. The outer diameter of the convex ring 42 is larger than that of the main body 41. When the nylon ring cooperates with the sheath 3, the end face of the convex ring 42 contacts the outer wall of the sheath 3. The main body 41 is provided with a tapered through hole 44 with a gradually increasing inner diameter, so as to smoothly push the irregular part 6 into the nylon ring.

[0074] In some implementations, such as Figure 1 and Figure 2 As shown, the elastic element 5 is a compression spring. One end of the compression spring abuts against one end face of the handle 1, and the other end abuts against the end face of the first sleeve 31 near the handle 1.

[0075] Specifically, in this embodiment, the elasticity of the compression spring is such that when the installation tool is placed vertically, with the compression spring at the bottom and the sheath 3 at the top, the compression spring can be fully extended to its original state, so that the distance between the stepped shaft 2 and the handle 1 reaches its maximum.

[0076] The assembly process of this installation tool is as follows: First, insert the threaded side of the stepped shaft 2 into the threaded hole side of the sheath 3 and exit through the smooth through hole side of the sheath 3. Then, insert a compression spring onto the threaded side of the stepped shaft 2, and then mate the thread of the stepped shaft 2 with the internal threaded hole of the handle 1. Under the elastic action of the compression spring, the sheath 3 is springed open, so that the support part 25 of the stepped shaft 2 is positioned between the two connecting plates 32 of the sheath 3. Finally, screw the nylon ring from the outside of the sheath 3 into the inside of the sheath 3, thus completing the assembly of the entire installation tool.

[0077] The installation tool is used as follows: First, insert the protrusion 43 of the nylon ring into the blind hole 71 on the bottom end face of the grooved bolt 7 (the position of the blind hole 71 on the bottom end face of the grooved bolt 7 is as follows). Figure 9 As shown), there are two methods:

[0078] 1. First, hold the connecting plate 32 of the grooved bolt 7 and the sheath 3 with both hands respectively, and align the center of the protrusion 43 of the nylon ring closely with the center of the blind hole 71 on the bottom end face of the grooved bolt 7; then push the nylon ring into the blind hole 71 on the bottom end face of the grooved bolt 7 with both hands; when the end face of the convex ring 42 of the nylon ring contacts the bottom end face of the grooved bolt 7, the insertion of the nylon ring is completed.

[0079] 2. First, hold the grooved bolt 7 and handle 1 with both hands respectively, and align the center of the nylon ring protrusion 43 closely with the center of the blind hole 71 on the bottom end face of the grooved bolt 7; then hold and push the handle 1, and under the elastic action of the compression spring, push the shaft sheath 3 and drive the nylon ring, pushing the nylon ring protrusion 43 into the blind hole 71 on the bottom end face of the grooved bolt 7; when the end face of the nylon ring protrusion 42 contacts the bottom end face of the grooved bolt 7, the insertion of the nylon ring is completed.

[0080] Afterwards, once the compression spring has returned to its original position, hook the irregular part 6 onto the support part 25 of the stepped shaft 2; then, holding the grooved bolt 7 and turning the handle 1, align the through hole 24 of the stepped shaft 2 with the threaded through hole 72 of the grooved bolt 7 (the position of the threaded through hole 72 of the grooved bolt 7 is as follows). Figure 9(As shown); Finally, push the handle 11. When the irregular part 6 enters the nylon ring protrusion 43, due to its own elasticity, the first connecting part 61 and the second connecting part 62 of the irregular part 6 are gradually compressed. When the irregular part 6 is pushed into the blind hole 71 on the bottom end face of the grooved bolt 7, and the first connecting part 61 of the irregular part 66 is engaged in the threaded surface through hole 72 of the grooved bolt 7, the first connecting part 61 of the irregular part 6 returns to its original state. At this time, the second connecting part 62 remains in a deformed state. At this time, stop pushing the handle 1. The state diagrams of the irregular part 6 before and after deformation are shown in the figures below. Figure 7 and Figure 8 As shown, its overall state diagrams are as follows: Figure 10 and Figure 11 As shown.

[0081] The process of removing the installation tool from the blind hole 71 on the bottom end face of the slotted bolt 7 and reinstalling the irregular part 6 is as follows:

[0082] Hold and pull away the handle 1. Then the boss 22 of the stepped shaft 2 drives the shaft sheath 3 to move axially and remove the nylon ring from the blind hole 71 at the bottom end of the grooved bolt 7. Then install the second irregular part 6 in the same way, and repeat the cycle. When the nylon ring reaches the end of its service life, you can simply replace it by unscrewing it.

[0083] By comparing the installation method of this installation tool with the original installation method, it can be seen that after inserting the nylon ring into the blind hole 71 at the bottom end face of the grooved bolt 7, and then using the handle 1 to push the irregular part 6 into the blind hole 71 at the bottom end face of the grooved bolt 7, the first connecting part of the irregular part 66 directly contacts the surface of the blind hole 71 at the bottom end face of the grooved bolt 7, thus avoiding wear on the surface coating. This improves the pass rate of the grooved bolt 7 after the irregular part 6 is installed.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

[0085] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A tool for installing grooved bolts and irregularly shaped parts, characterized in that, include: Handle (1), stepped shaft (2), shaft sheath (3), connector (4), and elastic element (5); The handle (1) is detachably connected to the stepped shaft (2). The main body of the stepped shaft (2) is a stepped structure, and the end of the main body away from the handle (1) is provided with a support body for supporting the irregular part (6). The sheath (3) penetrates the support body and is sleeved on the main body of the stepped shaft (2). The sheath (3) can move along the main body of the stepped shaft (2). The connector (4) is detachably connected to the end of the sheath (3) away from the stepped shaft (2), and the connector (4) has a tapered through hole (44) through which the irregular part (6) can pass. The connector (4) can be inserted into the blind hole (71) of the grooved bolt (7). The elastic element (5) is sleeved on the body of the stepped shaft (2), one end of the elastic element (5) abuts against the handle (1), and the other end abuts against the shaft sheath (3); In response to manipulating the handle (1), the stepped shaft (2) and the sheath (3), the irregular part (6) is inserted into the blind hole (71) of the grooved bolt (7), and one end of the irregular part (6) is engaged in the through hole (72) opened on the side wall of the grooved bolt (7); One end of the handle (1) is provided with an internal thread hole; The main body includes a first connecting rod (21), one end of which is provided with an external thread, and the first connecting rod (21) is threadedly connected to the handle (1); The first connecting rod (21) has a boss (22) at one end away from the handle (1), and the boss (22) is fixedly connected to the support body; The support body includes a second connecting rod (23), which is fixedly connected to the boss (22). The second connecting rod (23) has a through hole (24) to form two support arms with a split structure. A support portion (25) is connected between the two support arms, and the support portion (25) is located at the end of the two support arms away from the boss (22); The sheath (3) includes a first sleeve (31) and a second sleeve (33), and the first sleeve (31) and the second sleeve (33) are connected by two parallel connecting plates (32). The second sleeve (33) has an internal thread; The connector (4) includes a main body (41), a protruding ring (42) and a protruding part (43), wherein the main body (41), the protruding ring (42) and the protruding part (43) are integrally formed. The main body (41) is provided with an external thread, and the external thread on the main body (41) is matched with the internal thread on the second sleeve (33). A tapered through hole (44) is provided inside the main body (41). The protrusion (43) has an inner hole (45) that communicates with the tapered through hole (44).

2. The tool for installing grooved bolts and irregularly shaped parts according to claim 1, characterized in that: The outer diameters of the first sleeve (31) and the second sleeve (33) are equal, and the inner diameter of the first sleeve (31) is equal to the diameter of the first connecting rod (21). The diameter of the first connecting rod (21) is smaller than the diameter of the handle (1). The height of the first sleeve (31) is greater than the height of the second sleeve (33).

3. The tool for installing grooved bolts and irregularly shaped parts according to claim 1, characterized in that: The diameter of the protrusion (43) matches the diameter of the blind hole (71) of the grooved bolt (7) and is smaller than the diameter of the main body (41) and the protruding ring (42); The diameter of the main body (41) is smaller than the diameter of the convex ring (42).

4. The tool for installing grooved bolts and irregularly shaped parts according to claim 1, characterized in that: The inner hole (45) of the protrusion (43) has a larger diameter than the diameter of the second connecting rod (23).

5. The tool for installing grooved bolts and irregularly shaped parts according to claim 1, characterized in that: The elastic element (5) is a compression spring. One end of the compression spring abuts against one end face of the handle (1), and the other end abuts against the end face of the first sleeve (31) near the handle (1).

6. The tool for installing grooved bolts and irregularly shaped parts according to claim 1, characterized in that: The length of the through hole (24) on the second connecting rod (23) is greater than the length of the irregular part (6).

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