Gear assembling and positioning tool and gear ring assembling and positioning tool

Abstract

The utility model discloses a gear assembling and positioning tool and a gear ring assembling and positioning tool, the gear assembling and positioning tool is used for limiting a gear when the gear is fastened on a shaft-shaped accessory of an installation base body, the gear assembling and positioning tool comprises a main body part, a positioning part and a meshing part, the positioning part is arranged on the main body part, and the meshing part is arranged on the positioning part. The positioning part is used for being matched with a mounting base body so as to position the gear assembling and positioning tool relative to the mounting base body; the meshing part is arranged on the main body part and provided with a sector gear ring used for being meshed with a to-be-fastened gear so that the gear can be fixed relative to the installation base body. The gear assembling and positioning tool is fixed on the mounting base body through the positioning part, then the meshing part is meshed with the gear, so that the gear and the mounting base body are relatively fixed and cannot rotate relatively, and when the gear is fastened on a rotatable shaft-shaped accessory in the mounting base body through the fastening nut, the gear does not rotate along with the shaft-shaped accessory; therefore, the installation of the gear and the shaft-shaped accessory is facilitated, and the assembly efficiency of the gear is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembly tooling, in particular to a gear assembly positioning tooling and a gear ring assembly positioning tooling. Background Art

[0002] Gears or gear rings are common accessories in some equipment. Generally, the gears or gear rings need to be fastened to another shaft-shaped accessory of the equipment. During the fastening process, the gears or gear rings often rotate with the shaft-shaped accessory, which makes fastening difficult and the fastening efficiency is low. Taking the fuel injection pump of an internal combustion engine as an example, the gears of the fuel injection pump need to be installed and fixed on the oil pump shaft by a fastening nut. During this process, the gears of the fuel injection pump need to be fixed before fastening. However, the gears of the fuel injection pump cannot be fixed. When tightening the fastening nut, the gears of the fuel injection pump will rotate with the oil pump shaft, resulting in the inability to tighten the fastening nut. Utility Model Content

[0003] In view of this, the first object of the utility model is to provide a gear assembly positioning tool to facilitate the fastening installation of the gear and the shaft-shaped accessory and prevent the gear from rotating during the installation process.

[0004] The second purpose of the utility model is to provide a gear ring assembly positioning tool.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A gear assembly positioning tool is used to limit the position of the gear when the gear is fastened to the shaft-shaped accessory of the mounting base, and the gear assembly positioning tool comprises:

[0007] Main body;

[0008] A positioning portion, the positioning portion is arranged on the main body, and the positioning portion is used to cooperate with the mounting base to position the gear assembly positioning tool relative to the mounting base;

[0009] The meshing portion is arranged on the main body, and the meshing portion is provided with a sector-shaped gear ring for meshing with the gear to be fastened, so that the gear is fixed relative to the mounting base.

[0010] In an optional embodiment, the positioning portion and / or the engaging portion are detachably provided on the main body.

[0011] In an optional embodiment, the engaging portion is detachably and positionably arranged on the main body, the main body is provided with a sliding guide portion, and the engaging portion is provided with a sliding fitting portion. The engaging portion and the main body are slidingly fitted together via the sliding guide portion and the sliding fitting portion. The sliding guide portion extends from an end of the main body away from the positioning portion to the position of the positioning portion, and a fastening mechanism for fixing the engaging portion relative to the main body is provided between the engaging portion and the main body.

[0012] In an optional embodiment, the sliding guide portion is a slide groove, the sliding matching portion is a slider that slides with the slide groove, the slider is fixedly connected to the engaging portion, and the slider is slidably and rotatably arranged in the slide groove so that the angle of the engaging portion relative to the positioning portion is adjustable.

[0013] In an optional embodiment, the fastening mechanism comprises:

[0014] A mounting groove is provided on the positioning portion, the mounting groove is communicated with the slide groove, and the mounting groove extends from one end of the slide groove to the other end of the slide groove;

[0015] A fastening threaded hole provided on the slider;

[0016] A fastening bolt adapted to the fastening threaded hole passes through the mounting slot and cooperates with the fastening threaded hole to fix the engaging portion relative to the main body.

[0017] In an optional embodiment, the meshing portion is provided with at least two sector-shaped gear rings, and the radius of each sector-shaped gear ring is different.

[0018] In an optional embodiment, the positioning part is a positioning rod, the first end of the positioning rod is provided with a threaded part, the main body is provided with a mounting threaded hole, and the positioning rod cooperates with the mounting threaded hole through the threaded part to detachably install the positioning rod on the main body.

[0019] In an optional embodiment, the second end of the positioning rod is a stepped shaft structure, and the stepped shaft structure includes a plurality of shaft portions with gradually decreasing diameters along the direction from the first end to the second end of the positioning rod.

[0020] A gear ring assembly and positioning tool is used to limit the position of the gear when the gear ring is fastened to the shaft-shaped accessory of the mounting base, and the gear ring assembly and positioning tool comprises:

[0021] Main body;

[0022] A positioning portion, the positioning portion is arranged on the main body, and the positioning portion is used to cooperate with the mounting base to position the gear ring assembly positioning tool relative to the mounting base;

[0023] The meshing portion is arranged on the main body, and the meshing portion is provided for a sector gear meshing with the gear ring to be fastened so as to fix the gear ring relative to the mounting base.

[0024] In an optional embodiment, the positioning portion and / or the engaging portion are detachably provided on the main body.

[0025] In an optional embodiment, the engaging portion is detachably and positionably arranged on the main body, the main body is provided with a sliding guide portion, and the engaging portion is provided with a sliding fitting portion. The engaging portion and the main body are slidingly fitted together via the sliding guide portion and the sliding fitting portion. The sliding guide portion extends from an end of the main body away from the positioning portion to the position of the positioning portion, and a fastening mechanism for fixing the engaging portion relative to the main body is provided between the engaging portion and the main body.

[0026] In an optional embodiment, the sliding guide portion is a slide groove, the sliding matching portion is a slider that slides with the slide groove, the slider is fixedly connected to the engaging portion, and the slider is slidably and rotatably arranged in the slide groove so that the angle of the engaging portion relative to the positioning portion is adjustable.

[0027] In an optional embodiment, the fastening mechanism comprises:

[0028] A mounting groove is provided on the positioning portion, the mounting groove is communicated with the slide groove, and the mounting groove extends from one end of the slide groove to the other end of the slide groove;

[0029] A fastening threaded hole provided on the slider;

[0030] A fastening bolt adapted to the fastening threaded hole passes through the mounting slot and cooperates with the fastening threaded hole to fix the engaging portion relative to the main body.

[0031] In an optional embodiment, the meshing portion is provided with at least two sector gears, and the radius of each sector gear is different.

[0032] In an optional embodiment, the positioning part is a positioning rod, the first end of the positioning rod is provided with a threaded part, the main body is provided with a mounting threaded hole, and the positioning rod cooperates with the mounting threaded hole through the threaded part to detachably install the positioning rod on the main body.

[0033] In an optional embodiment, the second end of the positioning rod is a stepped shaft structure, and the stepped shaft structure includes a plurality of shaft portions with gradually decreasing diameters along the direction from the first end to the second end of the positioning rod.

[0034] The utility model provides a gear assembly positioning tool, which is used to limit the gear when the gear is fastened to the shaft-shaped accessory of the installation base, wherein the installation base here refers to the part of the equipment that will not rotate relative to the gear, and the shaft-shaped accessory is rotatably arranged in the installation base, and the gear assembly positioning tool comprises a main body, a positioning part and a meshing part, wherein the main body is used to provide an installation basis for the positioning part and the meshing part, and the positioning part and the meshing part can be arranged on the same side of the main body, and can also be arranged on different sides of the main body, depending on the positional relationship between the gear to be installed and the installation base; the positioning part is arranged on the main body, and the positioning part is used to cooperate with the installation base to position the gear assembly positioning tool relative to the installation base; the meshing part is arranged on the main body, and the meshing part is arranged for a sector gear ring meshing with the gear to be fastened, so that the gear is fixed relative to the installation base.

[0035] The above-mentioned gear assembly positioning tool is fixed to the mounting base through the positioning part, and then engages with the gear through the meshing part, so that the gear and the mounting base can be relatively fixed and cannot rotate relative to each other. In this case, when the gear is fastened to the rotatable shaft-like accessory in the mounting base through the fastening nut, the gear cannot rotate with the shaft-like accessory, thereby facilitating the tightening of the fastening nut, facilitating the installation of the gear and the shaft-like accessory, and helping to improve the assembly efficiency of the gear.

[0036] The utility model also provides a gear ring assembly and positioning tool, the structure and working method of the gear ring assembly and positioning tool are basically the same as the above-mentioned gear assembly and positioning tool, so the gear ring assembly and positioning tool should have the same technical effect, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A schematic diagram of the structure of a gear assembly and positioning tool provided in an embodiment of the utility model;

[0039] Figure 2 A schematic diagram of the use of the gear assembly and positioning tool provided in the embodiment of the utility model;

[0040] Figure 3A cross-sectional view of the use of the gear assembly and positioning tool provided in the embodiment of the utility model;

[0041] Figure 4 A schematic structural diagram of a positioning rod of a gear assembly positioning tool provided in an embodiment of the utility model.

[0042] In the figure:

[0043] 1 is the main body; 2 is the positioning rod; 201 is the threaded portion; 202 is the stepped shaft structure; 3 is the meshing portion; 4 is the gear; 5 is the pump housing; and 6 is the fastening nut. DETAILED DESCRIPTION

[0044] One of the cores of the utility model is to provide a gear assembly positioning tool, the structural design of the gear assembly positioning tool can facilitate the fastening installation of the gear and the shaft-shaped accessory, and prevent the gear from rotating during the installation process.

[0045] Another core of the utility model is to provide a gear ring assembly positioning tool.

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] Those skilled in the art will understand that, in the field of internal combustion engine assembly and manufacturing, the gear assembly of the fuel injection pump is performed together with the crankshaft timing gear and other installation links in the rear gear system. Therefore, the quality of the gear assembly of the fuel injection pump is directly related to whether the entire rear gear system is timing, plays a vital role, and is an important process in the assembly. However, there is currently a lack of a tooling that facilitates the installation of the fuel injection pump gears, resulting in low efficiency in the installation of the fuel injection pump gears. Based on this purpose, a gear assembly positioning tooling in the following embodiment is proposed.

[0048] See also Figures 1 to 3 , Figure 1 A schematic diagram of the structure of the gear assembly and positioning tool provided in the embodiment of the utility model, Figure 2 A schematic diagram of the use of the gear assembly positioning tool provided in the embodiment of the utility model, Figure 3 A cross-sectional view of the use of the gear assembly and positioning tool provided in an embodiment of the utility model.

[0049] The embodiment of the utility model provides a gear assembly and positioning tool, which is used to limit the gear 4 when the gear 4 is fastened to the axial accessory in the mounting base. The axial accessory can be rotatably mounted in the mounting base. The mounting base here refers to the part of the equipment that will not rotate relative to the gear 4. Taking the fuel injection pump of an internal combustion engine as an example, the pump housing 5 of the fuel injection pump can be considered as the above-mentioned mounting base, and the oil pump shaft of the fuel injection pump can be considered as the above-mentioned axial accessory. Of course, it should be noted that the gear assembly and positioning tool in the embodiment of the utility model is not limited to the installation of the gear 4 of the fuel injection pump, but can also be used for the installation of other equipment with axial accessories and gears. The above-mentioned gear assembly and positioning tool includes a main body 1, a positioning portion and a meshing portion 3.

[0050] Among them, the main body 1 is used to provide an installation base for the positioning part and the meshing part 3. The shape of the main body 1 is designed according to the appearance of the installation base. The shape of the main body 1 includes but is not limited to a plate-like, block-like or irregular shape. The positioning part and the meshing part 3 can be arranged on the same side of the main body 1, or on different sides of the main body 1, depending on the positional relationship between the gear 4 to be installed and the installation base; the positioning part is arranged on the main body 1, and the positioning part is used to cooperate with the installation base to position the gear assembly positioning tool relative to the installation base; the meshing part 3 is arranged on the main body 1, and the meshing part 3 is provided for a sector-shaped gear ring that meshes with the gear 4 to be fastened, so that the gear 4 is fixed relative to the installation base. The sector-shaped gear ring can reduce space occupancy while achieving meshing positioning with the gear 4, leaving space for the tightening operation of the tightening nut 6, and avoiding affecting the tightening tool from entering and exiting the tightening position. In an embodiment of the utility model, the main body 1 and the positioning part can be an integral structure or a split detachable structure, and / or the main body 1 and the meshing part 3 can be an integral structure or a split detachable structure.

[0051] It can be seen that compared with the prior art, the gear assembly positioning tool provided in the embodiment of the utility model is fixed to the mounting base through the positioning part when in use, and then the meshing part 3 is used to mesh with the gear 4, so that the gear 4 and the mounting base can be relatively fixed and cannot rotate relative to each other. In this case, when the gear 4 is fastened to the rotatable shaft-like accessory in the mounting base through the fastening nut 6, the gear 4 cannot rotate with the shaft-like accessory, which makes it easy to tighten the fastening nut 6, facilitates the installation of the gear 4 and the shaft-like accessory, and helps to improve the assembly efficiency of the gear 4.

[0052] To facilitate use with equipment of various specifications, in an embodiment of the utility model, the positioning portion and / or the meshing portion 3 is detachably arranged on the main body 1. At the same time, a gear assembly positioning tool can be equipped with multiple positioning portions and / or multiple meshing portions 3 at the same time. Each positioning portion and each meshing portion 3 is different. In this way, by replacing positioning portions or meshing portions 3 of different specifications, the above-mentioned gear assembly positioning tool can be used for the installation of gears 4 in a variety of equipment.

[0053] It should be noted that the above-mentioned multiple positioning parts are different, which means that the positioning parts have the same shape but different sizes. It can also mean that the shapes are different, that is, each positioning part adopts a different method for positioning. For example, the positioning part can cooperate with the hole structure on the mounting base. When there are one or more hole structures on the mounting base, the positioning part can have the same number or a smaller number of rod-like structures as the hole structures on the mounting base to cooperate with them. The positioning part can also cooperate with the protrusion structure on the mounting base, that is, the positioning part can have a hole-shaped or groove-shaped structure to cooperate with the protrusion structure on the mounting base, or cooperate with the edge of the mounting base. Therefore, each positioning part can adopt a different structure.

[0054] Preferably, it is foreseeable that if the positions of the positioning portion and the meshing portion 3 are fixed, the meshing of the meshing portion 3 and the gear 4 will be affected due to the tolerances of the gear 4 and the mounting base during the manufacturing process. The gear 4 and the meshing portion 3 cannot mesh well, and the teeth of the gear 4 may be damaged during the tightening process, thereby affecting the product quality. In addition, in order to adapt to the installation of the gear 4 of equipment of different specifications, in the embodiment of the utility model, the meshing portion 3 is detachably and positionally adjustable on the main body 1, the main body 1 is provided with a sliding guide portion, and the meshing portion 3 is provided with a sliding The mating part, the meshing part 3 and the main body 1 are slidably matched with each other through the sliding guide part and the sliding matching part. The sliding guide part extends from the end of the main body 1 away from the positioning part to the position of the positioning part. A fastening mechanism for fixing the meshing part 3 relative to the main body 1 is arranged between the meshing part 3 and the main body 1. Through the above-mentioned structural design, the distance between the meshing part 3 and the positioning part is adjustable. The distance between the meshing part 3 and the positioning part can be adjusted according to actual needs to meet the tolerances of the same equipment and the different sizes of equipment. The assembly requirements improve the scope of application of gear assembly and positioning tooling.

[0055] To further optimize the above technical solution, only making the position of the meshing part 3 adjustable may not be able to adapt to the influence of tolerances or different sizes and shapes. In order to improve the flexibility of the gear assembly positioning tooling, the sliding guide part is a slide groove, and the sliding matching part is a slider that slides with the slide groove. The slider is fixedly connected to the meshing part 3, and the slider is slidably and rotatably arranged in the slide groove, so that the angle of the meshing part 3 relative to the positioning part is adjustable. In this way, the meshing part 3 is not only adjustable in position, but also in angle, so that the meshing part 3 is more flexible and can be adjusted according to actual conditions. It is also more convenient to cooperate with the gear 4. After the meshing part 3 is meshed and fixed with the gear 4, the meshing part 3 is fixed by a fastening mechanism.

[0056] Specifically, in an embodiment of the utility model, the above-mentioned fastening mechanism includes an installation groove, a fastening threaded hole and a fastening bolt, wherein the installation groove is arranged on the main body 1, the installation groove is connected with the slide groove, and the installation groove and the slide groove both pass through the main body 1, the installation groove extends from one end of the slide groove to the other end of the slide groove, and the fastening threaded hole is arranged on the slider; the fastening bolt is adapted to the fastening threaded hole, and the fastening bolt passes through the installation groove and cooperates with the fastening threaded hole to fix the meshing part 3 relative to the main body 1, and by extending the installation groove from one end of the slide groove to the other end of the slide groove, the fastening bolt can slide along the installation groove when it is not tightened with the fastening threaded hole, that is, the fastening bolt can slide along the slide groove. In this way, through the above-mentioned fastening mechanism, when the fastening bolt and the fastening threaded hole are loosened, the meshing part 3 can slide and rotate along the slide groove, and when the fastening bolt and the fastening threaded hole are tightened, the meshing part 3 is fixed relative to the main body 1.

[0057] A sector gear ring can only mesh with a gear 4 of one specification, and thus can only position a gear 4 of one specification. In order to enable the meshing portion 3 to position gears 4 of multiple specifications, in the embodiment of the utility model, the meshing portion 3 is provided with at least two sector gear rings, and the radius of each sector gear ring is different. If the size of the meshing portion 3 is large enough, the number of sector gear rings thereon can be made larger, so that by rotating the meshing portion 3, different sector gear rings can be placed in the working position, so that the gear assembly positioning tooling in the embodiment of the utility model can be used to position gears 4 of multiple different specifications.

[0058] like Figures 1 to 4 As shown, in a specific embodiment of the utility model, the positioning portion is a positioning rod 2, the first end of the positioning rod 2 is provided with a threaded portion 201, and the main body 1 is provided with a mounting threaded hole. The positioning rod 2 cooperates with the mounting threaded hole through the threaded portion 201, and the positioning rod 2 is detachably installed on the main body 1. In this way, the gear assembly positioning tool can install positioning rods 2 of different specifications, as long as the size specifications of the threaded portion 201 at the end of the positioning rod 2 are the same.

[0059] like Figure 4As shown, in order to enable the positioning rod 2 to cooperate with hole structures on mounting bases of various sizes, in an embodiment of the utility model, the second end of the positioning rod 2 is a stepped shaft structure 202, and the stepped shaft structure 202 includes a plurality of shaft portions with gradually decreasing diameters along the direction from the first end to the second end of the positioning rod 2, so that the positioning rod 2 can cooperate with hole structures of various different diameters.

[0060] like Figure 2 and Figure 3 As shown, the embodiment of the utility model takes the installation of the gear 4 of the fuel injection pump as an example. A flange structure is provided on the pump housing 5 of the fuel injection pump, and a through hole is provided on the flange structure. When installing the gear 4 of the fuel injection pump, the gear 4 is sleeved on the oil pump shaft of the fuel injection pump, and then the positioning rod 2 of the gear assembly positioning tool is inserted into the through hole of the flange structure, and the meshing portion 3 is meshed with the gear 4, so that the gear 4 is fixed relative to the pump housing 5, and then the fastening nut 6 is matched with the external thread on the oil pump shaft to tighten the gear 4.

[0061] An embodiment of the utility model also provides a gear ring assembly positioning tool, which is used to limit the gear when the gear ring is fastened to the axial accessory of the mounting base. The axial accessory is rotatably mounted in the mounting base. The mounting base here refers to the part of the equipment that does not rotate relative to the gear. The gear ring assembly positioning tool includes a main body, a positioning part and an engaging part.

[0062] Among them, the main body is used to provide an installation base for the positioning part and the meshing part. The shape of the main body is designed according to the appearance of the installation base. The shape of the main body includes but is not limited to plate-like, block-like or irregular shapes. The positioning part and the meshing part can be arranged on the same side of the main body, or on different sides of the main body, depending on the positional relationship between the gear to be installed and the mounting base; the positioning part is arranged on the main body, and the positioning part is used to cooperate with the mounting base to position the gear ring assembly positioning tool relative to the mounting base; the meshing part is arranged on the main body, and the meshing part is arranged for the fan-shaped gear that meshes with the gear ring to be fastened, so that the gear ring is fixed relative to the mounting base. The fan-shaped gear can reduce space occupancy while achieving meshing positioning with the gear ring, leaving space for the tightening operation of the tightening nut, and avoiding affecting the tightening tool from entering and exiting the tightening position. In an embodiment of the utility model, the main body and the positioning part can be an integral structure or a split detachable structure, and / or the main body and the meshing part can be an integral structure or a split detachable structure.

[0063] Except for the structure of the meshing part of the gear ring assembly and positioning tool, which is different from the structure of the meshing part of the gear assembly and positioning tool in the above embodiment, other structures are basically the same, and the method of use is also basically the same. Therefore, please refer to the above embodiment for the technical effects produced.

[0064] To facilitate use with equipment of various specifications, in an embodiment of the utility model, the positioning portion and / or the meshing portion can be detachably arranged on the main body. At the same time, a gear ring assembly positioning tool can be equipped with multiple positioning portions and / or multiple meshing portions at the same time. Each positioning portion and each meshing portion is different. In this way, by replacing positioning portions or meshing portions of different specifications, the above-mentioned gear ring assembly positioning tool can be used for the installation of gear rings in various equipment.

[0065] The above-mentioned multiple positioning parts are different, which means that the positioning parts have the same shape but different sizes. It can also mean that the shapes are different, that is, each positioning part is positioned in a different manner. For example, the positioning part can cooperate with the hole-like structure on the mounting base. When there are one or more hole-like structures on the mounting base, the positioning part can have the same number or a smaller number of rod-like structures as the hole-like structures on the mounting base to cooperate with them. The positioning part can also cooperate with the protrusion structure on the mounting base, that is, the positioning part can have a hole-like or groove-like structure to cooperate with the protrusion structure on the mounting base, or cooperate with the edge of the mounting base. Therefore, each positioning part can adopt a different structure.

[0066] If the positions of the positioning portion and the meshing portion are fixed, then due to the tolerances of the gear ring and the mounting base during the manufacturing process, the meshing of the meshing portion and the gear ring will be affected, the gear ring and the meshing portion cannot mesh well, and the teeth of the gear ring may be damaged during the tightening process, thereby affecting the product quality. In addition, in order to adapt to the installation of gear rings of equipment of different specifications, in an embodiment of the utility model, the meshing portion is detachably and positionally adjustable on the main body, the main body is provided with a sliding guide portion, the meshing portion is provided with a sliding fitting portion, the meshing portion and the main body are slidably matched with the sliding guide portion and the sliding fitting portion, the sliding guide portion extends from an end of the main body away from the positioning portion to the position of the positioning portion, and a fastening mechanism for fixing the meshing portion relative to the main body is provided between the meshing portion and the main body. Through the above-mentioned structural design, the distance between the meshing portion and the positioning portion is adjustable, and the distance between the meshing portion and the positioning portion can be adjusted according to actual needs to meet the tolerances of the same equipment and the assembly requirements of different sizes of different equipment, thereby improving the scope of application of the gear ring assembly and positioning tooling.

[0067] It is foreseeable that only making the position of the meshing part adjustable may not be able to adapt to the influence of tolerances or different sizes and shapes. In order to improve the flexibility of the gear ring assembly positioning tooling, the sliding guide part is a slide groove, and the sliding matching part is a slider that slides with the slide groove. The slider is fixedly connected to the meshing part, and the slider is slidably and rotatably arranged in the slide groove so that the angle of the meshing part relative to the positioning part can be adjusted. In this way, not only the position of the meshing part is adjustable, but also the angle is adjustable, so that the meshing part is more flexible and can be adjusted according to actual conditions. It is also more convenient to cooperate with the gear. After the meshing part is meshed and fixed with the gear, the meshing part is fixed by a fastening mechanism.

[0068] In an embodiment of the utility model, the above-mentioned fastening mechanism includes an installation groove, a fastening threaded hole and a fastening bolt, wherein the installation groove is arranged on the main body part, the installation groove is connected with the slide groove, and the installation groove and the slide groove both pass through the main body part, the installation groove extends from one end of the slide groove to the other end of the slide groove, and the fastening threaded hole is arranged on the slider; the fastening bolt is adapted to the fastening threaded hole, and the fastening bolt passes through the installation groove and cooperates with the fastening threaded hole to fix the meshing part relative to the main body part, and the installation groove is extended from one end of the slide groove to the other end of the slide groove, so that the fastening bolt can slide along the installation groove when it is not tightened with the fastening threaded hole, that is, the fastening bolt can slide along the slide groove. In this way, through the above-mentioned fastening mechanism, when the fastening bolt and the fastening threaded hole are loosened, the meshing part can slide and rotate along the slide groove, and when the fastening bolt and the fastening threaded hole are tightened, the meshing part is fixed relative to the main body part.

[0069] A sector gear can only mesh with a gear ring of one specification, and thus can only position a gear ring of one specification. In order to enable the meshing portion to position gear rings of multiple specifications, in an embodiment of the utility model, the meshing portion is provided with at least two sector gears, and the radii of each sector gear are different. If the size of the meshing portion is large enough, the number of sector gears thereon can be made larger, so that by rotating the meshing portion, different sector gears can be in the working position, so that the gear ring assembly positioning tool in the embodiment of the utility model can be used for positioning gear rings of multiple different specifications.

[0070] In an embodiment of the utility model, the positioning part is a positioning rod, the first end of the positioning rod is provided with a threaded part, and the main body is provided with a mounting threaded hole. The positioning rod cooperates with the mounting threaded hole through the threaded part, and the positioning rod is detachably installed on the main body. In this way, the gear assembly positioning tool can install positioning rods of different specifications, as long as the size specifications of the threaded part at the end of the positioning rod are the same.

[0071] In order to enable the positioning rod to cooperate with hole structures on mounting bases of various sizes, in an embodiment of the utility model, the second end of the positioning rod is a stepped shaft structure, which includes multiple shaft portions with gradually decreasing diameters along the direction from the first end to the second end of the positioning rod, so that the positioning rod can cooperate with hole structures of various different diameters.

[0072] 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.

[0073] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gear assembly positioning tool, used to limit the position of the gear when the gear is fastened to the shaft-shaped accessory of the mounting base, characterized in that: The gear assembly and positioning tool comprises: Main body; A positioning portion, the positioning portion is arranged on the main body, and the positioning portion is used to cooperate with the mounting base to position the gear assembly positioning tool relative to the mounting base; The meshing portion is arranged on the main body, and the meshing portion is provided with a sector-shaped gear ring for meshing with the gear to be fastened, so that the gear is fixed relative to the mounting base.

2. The gear assembly and positioning tool according to claim 1, characterized in that: The positioning portion and / or the engaging portion are detachably arranged on the main body.

3. The gear assembly and positioning tool according to claim 2, characterized in that: The engaging portion is detachably and positionably arranged on the main body, the main body is provided with a sliding guide portion, the engaging portion is provided with a sliding fitting portion, the engaging portion and the main body are slidingly fitted together via the sliding guide portion and the sliding fitting portion, the sliding guide portion extends from an end of the main body away from the positioning portion toward the position of the positioning portion, and a fastening mechanism for fixing the engaging portion relative to the main body is provided between the engaging portion and the main body.

4. The gear assembly and positioning tool according to claim 3, characterized in that: The sliding guide portion is a slide groove, the sliding matching portion is a slider that slides with the slide groove, the slider is fixedly connected to the meshing portion, and the slider is slidably and rotatably arranged in the slide groove so that the meshing portion can be adjusted in angle relative to the positioning portion.

5. The gear assembly and positioning tool according to claim 4, characterized in that: The fastening mechanism comprises: A mounting groove provided on the main body, the mounting groove being communicated with the slide groove, and the mounting groove extending from one end of the slide groove to the other end of the slide groove; A fastening threaded hole provided on the slider; A fastening bolt adapted to the fastening threaded hole passes through the mounting slot and cooperates with the fastening threaded hole to fix the engaging portion relative to the main body.

6. The gear assembly and positioning tool according to any one of claims 3 to 5, characterized in that: The meshing portion is provided with at least two sector-shaped gear rings, and the radii of the sector-shaped gear rings are different.

7. The gear assembly and positioning tool according to any one of claims 2 to 5, characterized in that: The positioning part is a positioning rod, a first end of the positioning rod is provided with a threaded part, the main body is provided with a mounting threaded hole, and the positioning rod cooperates with the mounting threaded hole through the threaded part, so that the positioning rod is detachably mounted on the main body.

8. The gear assembly and positioning tool according to claim 7, characterized in that: The second end of the positioning rod is a stepped shaft structure, and the stepped shaft structure includes a plurality of shaft portions with gradually decreasing diameters along a direction from the first end to the second end of the positioning rod.

9. A gear ring assembly positioning tool, used to limit the position of the gear when the gear ring is fastened to the shaft-shaped accessory of the mounting base, characterized in that: The gear ring assembly and positioning tool comprises: Main body; A positioning portion, the positioning portion is arranged on the main body, and the positioning portion is used to cooperate with the mounting base to position the gear ring assembly positioning tool relative to the mounting base; The meshing portion is arranged on the main body, and the meshing portion is provided for a sector gear meshing with the gear ring to be fastened so as to fix the gear ring relative to the mounting base.

10. The gear ring assembly and positioning tool according to claim 9, characterized in that: The positioning portion and / or the engaging portion are detachably arranged on the main body.

11. The gear ring assembly and positioning tool according to claim 10, characterized in that: The engaging portion is detachably and positionably arranged on the main body, the main body is provided with a sliding guide portion, the engaging portion is provided with a sliding fitting portion, the engaging portion and the main body are slidingly fitted together via the sliding guide portion and the sliding fitting portion, the sliding guide portion extends from an end of the main body away from the positioning portion toward the position of the positioning portion, and a fastening mechanism for fixing the engaging portion relative to the main body is provided between the engaging portion and the main body.

12. The gear ring assembly and positioning tool according to claim 11, characterized in that: The sliding guide portion is a slide groove, the sliding matching portion is a slider that slides with the slide groove, the slider is fixedly connected to the meshing portion, and the slider is slidably and rotatably arranged in the slide groove so that the meshing portion can be adjusted in angle relative to the positioning portion.

13. The gear ring assembly and positioning tool according to claim 12, characterized in that: The fastening mechanism comprises: A mounting groove provided on the main body, the mounting groove being communicated with the slide groove, and the mounting groove extending from one end of the slide groove to the other end of the slide groove; A fastening threaded hole provided on the slider; A fastening bolt adapted to the fastening threaded hole passes through the mounting slot and cooperates with the fastening threaded hole to fix the engaging portion relative to the main body.

14. The gear ring assembly and positioning tool according to any one of claims 11 to 13, characterized in that: The meshing portion is provided with at least two sector gears, and the radii of the sector gears are different.

15. The gear ring assembly and positioning tool according to any one of claims 10 to 13, characterized in that: The positioning part is a positioning rod, a first end of the positioning rod is provided with a threaded part, the main body is provided with a mounting threaded hole, and the positioning rod cooperates with the mounting threaded hole through the threaded part, so that the positioning rod is detachably mounted on the main body.

16. The gear ring assembly and positioning tool according to claim 15, characterized in that: The second end of the positioning rod is a stepped shaft structure, and the stepped shaft structure includes a plurality of shaft portions with gradually decreasing diameters along a direction from the first end to the second end of the positioning rod.

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