Device for disassembling and assembling fasteners in holes

Abstract

The present invention relates to a disassembly and assembly device for fasteners in holes, comprising: a main body, the main body comprising a columnar portion and a disc-shaped portion fixedly connected to one end of the columnar portion; a plurality of engaging members fixed at intervals to the outer periphery of the disc-shaped portion, each engaging member having a claw portion for engaging the fastener to be disassembled, and the claw portion extends out of the disc-shaped portion; and an auxiliary component for ensuring the stability of the main body, the auxiliary component comprising: a bracket sleeved on the outside of the columnar portion, and a plurality of planetary gears rotatably mounted on the bracket, the wheel surface of the planetary gear being parallel to the disc surface of the disc-shaped portion, and the planetary gear being tangent to the columnar portion and the inner wall of the hole at the same time. The disassembly and assembly device can be used in the disassembly and installation process of fasteners in narrow spaces such as holes, so that fasteners in special use environments can also be easily and conveniently disassembled and installed, ensuring the tightness of the fastener installation and the convenience of disassembly.

Description

Technical Field

[0001] The invention belongs to the technical field of disassembly and assembly tool equipment, and in particular relates to a disassembly and assembly device for fasteners in holes. Background Art

[0002] Currently, crescent wrenches are usually used to tighten and remove fasteners such as nuts or bolts. However, conventional tools such as crescent wrenches are only suitable for working conditions where there are no obstacles around the bolts or nuts to be removed, such as ring nuts exposed on shafts.

[0003] When the bolts or nuts are limited by their own properties and the use environment, for example, when they are installed in a small space, such as in a hole, they cannot be disassembled using conventional tools, and the tightness of the installation and the convenience of disassembly cannot be guaranteed.

[0004] For example, when installing and disassembling the main shaft of an aviation tire dynamic simulation test machine, since the main shaft is a hollow long shaft, the bolts installed deep in the hollow holes of the main shaft cannot be disassembled and installed using conventional tools, making the installation and maintenance of the test equipment during daily use complicated, time-consuming and costly. Summary of the invention

[0005] In view of the deficiencies existing in the related art, the present invention provides a disassembly and assembly device for fasteners in holes, so as to realize easy and convenient disassembly and installation of fasteners in narrow spaces such as holes.

[0006] The present invention provides a disassembly and assembly device for fasteners in holes, comprising:

[0007] A main body, the main body comprising a columnar portion and a disc-shaped portion fixedly connected to one end of the columnar portion;

[0008] a plurality of engaging members, the plurality of engaging members being fixed to the outer periphery of the disc-shaped portion at intervals, each engaging member having a claw portion for engaging with a fastener to be disassembled, the claw portion extending out of the disc-shaped portion; and

[0009] Auxiliary components, used to ensure the stability of the main body, including:

[0010] A bracket, the bracket being sleeved on the outside of the columnar portion; and

[0011] A plurality of planetary wheels are rotatably mounted on the bracket, the wheel surfaces of the planetary wheels are parallel to the disk surface of the disk-shaped portion, and the planetary wheels are tangent to the columnar portion and the inner wall of the hole at the same time.

[0012] Optionally, the bracket includes a first circular ring and a second circular ring which are sleeved on the outside of the columnar portion, the first circular ring and the second circular ring are arranged in parallel, and the wheel centers of the multiple planetary wheels are fixedly arranged at intervals between the first circular ring and the second circular ring.

[0013] Optionally, a plurality of grooves are formed on the outer peripheral edge of the disc-shaped portion toward the center; and the engaging member is detachably fixedly installed in the grooves.

[0014] Optionally, the engaging member includes a fixing portion, which is provided with a bolt hole and is fixed to the bottom of the groove 13 by bolts.

[0015] Optionally, the width of the fixing portion is greater than the width of the claw portion.

[0016] Optionally, the claw portion includes a first claw portion and a second claw portion located at two ends of the fixing portion, and a size of the second claw portion is different from a size of the first claw portion to match fasteners of different sizes.

[0017] Optionally, a force applying rod is further included, and a through hole is opened at the top end of the columnar portion, and two ends of the force applying rod pass through the through hole to apply torque to the main body.

[0018] Optionally, the columnar portion is a hollow cylinder; the columnar portion and the disc-shaped portion are formed as one body by welding.

[0019] Optionally, an auxiliary locking screw is further included, and both ends of the auxiliary locking screw pass through the columnar portion and contact the inner wall of the hole to perform auxiliary locking.

[0020] Optionally, the outer surface of the auxiliary locking screw is provided with threads, and the auxiliary locking screw is fixed and locked with the columnar portion through a locking nut; round-head locking nuts are threadedly connected at both ends of the auxiliary locking screw.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The disassembly and assembly device provided by the present invention has a columnar main body and a clamping member for clamping a fastener, which can be used in the disassembly and installation process of fasteners in narrow spaces such as holes, so that fasteners in special use environments can also be easily and conveniently disassembled and installed, ensuring the tightness of the fastener installation and the convenience of disassembly.

[0023] (2) The disassembly and assembly device provided by the present invention, by setting an auxiliary component, the planetary gear is tangent to the inner wall of the columnar part and the working hole at the same time, which can ensure that the main body remains stable and will not tip over during operation and the engaging part can always be firmly engaged with the fastener; even if a large torque is applied to the main body, the claw of the engaging part can still fit tightly with the end of the fastener, so that the fastener can be effectively tightened and disassembled.

[0024] (3) The disassembly and assembly device provided by the present invention can replace the tooling according to the working conditions of different diameters and depths, and has strong versatility; it has a simple structure, is lightweight, and has low cost.

[0025] (4) The disassembly and assembly device provided by the present invention can provide auxiliary reinforcement when the installed fastener cannot temporarily maintain the locking state by providing an auxiliary locking screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 A front view of an embodiment of the disassembly and assembly device of the present invention;

[0028] Figure 2 for Figure 1 A top view of the disassembly and assembly device;

[0029] Figure 3 This is a front view of the main body of an embodiment of the disassembly and assembly device of the present invention;

[0030] Figure 4 for Figure 3 A top view of the subject;

[0031] Figure 5 This is a schematic diagram of the structure of a clamping member in one embodiment of the disassembly and assembly device of the present invention;

[0032] Figure 6 It is a front view of an auxiliary component in one embodiment of the disassembly and assembly device of the present invention;

[0033] Figure 7 for Figure 6 A top view of the auxiliary components;

[0034] Figure 8 It is a front view of another embodiment of the disassembly and assembly device of the present invention;

[0035] Fig. 9 for Figure 8 A top view of the disassembly and assembly device;

[0036] Fig.10It is a schematic diagram of the end face of a bolt to be disassembled.

[0037] In the figure:

[0038] 1. Main body; 11. Columnar portion; 12. Disc-shaped portion; 13. Groove; 2. Clamping member; 21. Claw portion; 211. First claw portion; 212. Second claw portion; 22. Fixing portion; 3. Auxiliary component; 31. Bracket; 311. First ring; 312. Second ring; 32. Planetary gear; 4. Force rod; 5. Auxiliary locking screw; 6. Locking nut; 7. Round head locking nut;

[0039] 10. Bolts to be disassembled; 101. Disassembly groove. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] It should be noted that the shapes shown in the drawings mentioned in the following description are concepts or schematic diagrams for describing preferred shapes, and the sizes and proportions shown do not necessarily match the actual proportions. In other words, the present invention is not limited to the proportions shown in the drawings.

[0042] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as "center", "top", "bottom", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] like Figure 1 , Figure 2 As shown, in an exemplary embodiment of the disassembly and assembly device for fasteners in holes of the present invention, the disassembly and assembly device comprises: a main body 1, the main body 1 comprises a columnar portion 11 and a disc-shaped portion 12 fixedly connected to one end of the columnar portion 11 (see Figure 3 , Figure 4 ); a plurality of engaging members 2, the plurality of engaging members 2 are fixed to the outer periphery of the disc-shaped portion 12 at intervals, each engaging member 2 having a claw portion 21 for engaging the fastener to be disassembled, and the claw portion 21 extends out of the disc-shaped portion 12; and an auxiliary component 3 for ensuring the stability of the main body 1, such as Figure 6 , Figure 7 As shown, the auxiliary component 3 includes: a bracket 31 sleeved on the outside of the columnar portion 11, and a plurality of planetary gears 32 rotatably mounted on the bracket 31, the wheel surface of the planetary gear 32 is parallel to the disk surface of the disk-shaped portion 12, and the planetary gear 32 is tangent to the columnar portion 11 and the inner wall of the hole at the same time.

[0046] The disassembly and assembly device provided in the embodiment of the present invention is developed during the installation and disassembly operation of the main shaft of the dynamic simulation test machine of the matching aviation tire, and can be extended to the use in the disassembly and installation process of fasteners in narrow spaces such as holes, so that fasteners in special use environments can also be easily and conveniently disassembled and installed, ensuring the tightness of the fastener installation and the convenience of disassembly. In addition, the planetary gear is tangent to the inner wall of the columnar portion and the working hole at the same time, which can ensure that the main body remains stable and will not fall over during operation and rotation, and the engaging member can always be firmly engaged with the fastener; even if a large torque is applied to the main body, the claw of the engaging member can also be tightly matched with the end of the fastener, which can effectively tighten and disassemble the fastener. It should be noted that for holes with transverse openings, the disassembly and assembly device can be used horizontally, that is, the axis of the columnar portion is placed horizontally to disassemble the fastener.

[0047] The disassembly and assembly device provided in the above exemplary embodiment can replace tooling of different sizes according to the use environment. Specifically, according to working conditions of different diameters and depths, the main body 1 and the planetary gear 32 of different sizes can be replaced; the number of the planetary gear 32 can also be selected according to actual conditions and needs, for example, it can be a three-star gear, a four-star gear or a five-star gear, etc.; the clamping member 2 is arranged according to the size of the fastener to be disassembled, for example, the number of the clamping member 2 can be three, four or five, and the size of the claw portion 21 of the clamping member 2 matches the size of the fastener to be disassembled.

[0048] For example, when using the disassembly device to disassemble Fig.10In the case of the special bolt 10 of the shown form, the end face of the bolt 10 has a disassembly groove 101, and the claw portion 21 of the clamping member 2 is clamped in the disassembly groove 101 to apply torque to disassemble the fastener. However, it can be understood that the disassembly device can also disassemble fasteners of other forms. Those skilled in the art can replace the clamping member with different forms of claws according to the form of the fastener to be disassembled. As long as the clamping member can be clamped with the fastener, the fastener can be disassembled.

[0049] As an optional implementation of the bracket 31, Figure 6 As shown, the bracket 31 includes a first ring 311 and a second ring 312 which are sleeved on the outside of the columnar portion 11. The first ring 311 and the second ring 312 are arranged in parallel, and the wheel centers of multiple planetary gears 32 are fixedly arranged between the first ring 311 and the second ring 312 at intervals.

[0050] As an optional embodiment of fixing the engaging member 2 to the disc-shaped portion 12, as Figure 4 As shown, a plurality of grooves 13 are formed from the outer peripheral edge of the disc-shaped portion 12 toward the center; the engaging member 2 is detachably fixedly installed in the grooves 13 .

[0051] Furthermore, a threaded hole is provided at the bottom of the groove 13, and the engaging member 2 includes a fixing portion 22 (see Figure 5 ), the fixing portion 22 is provided with a bolt hole and is fixed to the groove 13 by bolts, thereby ensuring the stability and sufficient strength of the installation of the engaging member 2.

[0052] As an optional implementation, Figure 5 As shown, the width of the fixing portion 22 is greater than the width of the claw portion 21. The fixing portion 22 is designed to be widened to avoid a decrease in strength due to the opening of a threaded hole and to avoid damage due to excessive torque during use.

[0053] As an optional implementation, Figure 5 As shown, the claw portion 21 includes a first claw portion 211 and a second claw portion 212 located at both ends of the fixing portion 22. The sizes of the first claw portion 211 and the second claw portion 212 can be different, so that they can be used with fasteners of different sizes. For example, the length of the second claw portion 212 can be greater than the length of the first claw portion 211. The first claw portion 211 is used for disassembly and assembly of a single fastener, and the second claw portion 212 can be used to prevent the loosening of two fasteners. In actual use, it is only necessary to swap the two ends of the engaging member, thereby improving the versatility of the disassembly and assembly device.

[0054] In addition, if Figure 1 and Figure 2As shown, the disassembly and assembly device further includes a force rod 4, and a through hole is provided at the top of the columnar portion 11, and both ends of the force rod 4 pass through the through hole to apply torque to the main body 1. In addition, when the installation space is deep, the through hole can also be used to nest and lengthen the main body, which is convenient for use in deep working conditions.

[0055] As an optional implementation, the columnar portion 11 and the disc-shaped portion 12 are formed into one piece by welding, thereby ensuring the reliability of the connection and reducing the cost.

[0056] As an optional implementation, the columnar portion 11 is a hollow cylinder, which reduces the weight of the disassembly and assembly device, reduces the cost, and is easy to carry and use.

[0057] As an optional implementation, Figure 8 and Fig. 9 As shown, the disassembly and assembly device further comprises an auxiliary locking screw 5, both ends of which pass through the columnar portion 11 and contact the inner wall of the hole. When the installed fastener cannot maintain the locking state temporarily, the auxiliary locking screw can be used for auxiliary reinforcement.

[0058] Furthermore, the outer surface of the auxiliary locking screw 5 is provided with a thread, and the auxiliary locking screw 5 is fixed and locked with the columnar portion 11 through a locking nut 6; round-head locking nuts 7 are threadedly connected to both ends of the auxiliary locking screw 5, and the position of the round-head locking nut 7 on the auxiliary locking screw 5 is adjusted so that it contacts the inner wall of the hole in the working condition for auxiliary locking.

[0059] Alternatively, if Fig. 9 As shown, two auxiliary locking screws 5 are provided, and the two auxiliary locking screws 5 are arranged at one end of the columnar portion at an angle of 90 degrees.

[0060] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0061] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A device for disassembling and assembling fasteners in holes, characterized in that: include: A main body, the main body comprising a columnar portion and a disc-shaped portion fixedly connected to one end of the columnar portion; A plurality of engaging members, the plurality of engaging members are fixed to the outer periphery of the disc-shaped portion at intervals, each of the engaging members having a claw portion for engaging a fastener to be disassembled, the claw portion extending out of the disc-shaped portion; Auxiliary components, used to ensure the stability of the main body, including: A bracket, the bracket is sleeved on the outside of the columnar portion, the bracket includes a first ring and a second ring sleeved on the outside of the columnar portion, and the first ring and the second ring are arranged in parallel; as well as a plurality of planetary wheels, the plurality of planetary wheels being rotatably mounted on the bracket, the wheel centers of the plurality of planetary wheels being fixedly arranged between the first circular ring and the second circular ring at intervals, the wheel surfaces of the planetary wheels being parallel to the disk surface of the disk-shaped portion, and the planetary wheels being tangent to the columnar portion and the inner wall of the hole at the same time; Two auxiliary locking screws are arranged at 90 degrees at one end of the columnar portion, and both ends of each auxiliary locking screw pass through the columnar portion and contact the inner wall of the hole. The outer surface of the auxiliary locking screw is provided with a thread. The auxiliary locking screw is fixed and locked to the columnar portion by a locking nut. Round head locking nuts are threaded at both ends of the auxiliary locking screw. The position of the round head locking nut on the auxiliary locking screw is adjusted to make the round head locking nut contact the inner wall of the hole for auxiliary locking.

2. The disassembly and assembly device according to claim 1, characterized in that: A plurality of grooves are formed on the outer peripheral edge of the disc-shaped portion toward the center; and the engaging member is detachably fixedly installed in the grooves.

3. The disassembly and assembly device according to claim 2, characterized in that: The engaging member comprises a fixing portion, wherein the fixing portion is provided with a bolt hole and is fixed to the bottom of the groove by means of bolts.

4. The disassembly and assembly device according to claim 3, characterized in that: The width of the fixing portion is greater than the width of the claw portion.

5. The disassembly and assembly device according to claim 1, characterized in that: The claw portion includes a first claw portion and a second claw portion located at two ends of the fixing portion. The size of the second claw portion is different from that of the first claw portion to match fasteners of different sizes.

6. The disassembly and assembly device according to claim 1, characterized in that: It also includes a force applying rod. The top end of the columnar portion is provided with a through hole. Both ends of the force applying rod pass through the through hole to apply torque to the main body.

7. The disassembly and assembly device according to claim 1, characterized in that: The columnar portion is a hollow cylinder; the columnar portion and the disc-shaped portion are formed into one piece by welding.

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