Supporting plate support used for installing multiple nuts and design method of supporting plate support

Abstract

The invention relates to the technical field of engines, in particular to a supporting plate support for installing a plurality of nuts and a design method of the supporting plate support. The supporting plate support comprises an arc-shaped support body and a supporting plate, the bolt holes are distributed in the circumferential direction of the support body and used for installing bolts matched with the nuts; the fixing pieces protrude out of the support body in the radial direction of the support body, are located on the two sides of each bolt hole and are used for being bent to fix nuts matched with the bolts. The supporting plate support is small in size, a plurality of nuts and bolts can be installed at a time, installation and replacement are convenient, meanwhile, cost is saved, the supporting plate support can be installed on an installation edge in a narrow space of an aero-engine case, the case is not prone to being damaged, and the width of the supporting plate support, the diameter of a bolt hole and the size of a fixing piece can be determined by thread specifications of the nuts. The stability and the safety of mounting the bolt and the nut on the supporting plate bracket can be effectively ensured, the nut is prevented from sliding or falling off, and the bolt is prevented from loosening and deviating.

Description

Technical Field

[0001] The present disclosure relates to the technical field of engines, and particularly to a carrier bracket for installing a plurality of nuts and a design method thereof. Background Art

[0002] Many connecting nuts need to be installed on the mounting edge of an aero-engine casing. For the nuts on the current casing mounting edge, the nuts are mostly fixed to the mounting edge by riveting or installed on a fixed bracket and then installed. The installation of the nuts on the current aero-engine casing mounting edge has the following problems: the space of some mounting edges is narrow, it is difficult for a wrench to reach, and it is difficult to fix the nuts. When the self-locking torque of the nuts fails, it is difficult to disassemble and assemble the bracket in a narrow space, and a huge number of carrier nuts need to be disassembled and assembled, which is time-consuming and laborious. During the disassembly and assembly process, it is easy to damage the riveting carrier nut holes of the casing. The specifications of the fixed brackets in the current technology are single, and the stability and safety are poor when installing nuts of various different models. Summary of the Invention

[0003] To overcome the problems existing in the related art, an exemplary embodiment of the present disclosure provides a carrier bracket for installing a plurality of nuts and a design method thereof.

[0004] An exemplary embodiment of the first aspect of the present disclosure provides a carrier bracket for installing a plurality of nuts. The carrier bracket includes: a bracket body, the bracket body is arc-shaped, and the radial width of the bracket body is determined based on the thread specifications of a plurality of nuts; bolt holes, the bolt holes are distributed along the circumferential direction of the bracket body for installing bolts that cooperate with the nuts, and the aperture of the bolt holes is determined based on the thread specifications of a plurality of nuts; fixing pieces, the fixing pieces protrude from the bracket body in the radial direction of the bracket body and are located on both sides of each bolt hole for bending to fix the nuts that cooperate with the bolts. The distance from the end of the fixing piece along the radial direction of the bracket body to the bolt hole and the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole are determined based on the thread specifications of a plurality of nuts.

[0005] In some embodiments, the end central angle of the bracket body satisfies the following formula, where the end central angle is the angle with the center of the bracket body as the center and between the end of the bracket body and the center of the first bolt hole close to the end:

[0006]

[0007] where θ is the end central angle, R is the bolt distribution radius on the mounting edge where the bracket body is installed, L 1 is the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole, and B 1 is the distance from the end of the fixing piece along the radial direction of the bracket body to the center of the bolt hole.

[0008] In some embodiments, the central angle of the end of the bracket body satisfies the following formula:

[0009]

[0010] where θ is the central angle of the end, R is the bolt distribution radius on the mounting side of the mounting bracket body, and L 1 is the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole, and B 1 is the distance from the end of the fixing piece along the radial direction of the bracket body to the center of the bolt hole.

[0011] In some embodiments, the bracket body is provided with arc-shaped grooves extending radially on both sides of the fixing piece, and the radius of the arc-shaped grooves is determined based on the thread specifications of the nuts.

[0012] In some embodiments, an arc-shaped avoidance groove is provided at one end of the fixing piece radially away from the bolt hole, and the radius of the arc-shaped avoidance groove is determined based on the thread specifications of the nuts.

[0013] In a second aspect, according to some other exemplary embodiments, the present disclosure further provides a design method for a pallet bracket, wherein the pallet bracket includes: a bracket body, the bracket body is an arc-shaped plate, bolt holes, the bolt holes are distributed along the circumferential direction of the bracket body, a fixing piece, the fixing piece protrudes from the bracket body in the radial direction of the bracket body and is located on both sides of each bolt hole; the design method of the pallet bracket includes: determining the radius of the bracket body based on the bolt distribution radius on the mounting side of the mounting bracket body; determining the number of bolt holes and the number of fixing pieces on the pallet bracket based on the number of bolts; determining the aperture of the bolt holes, the distance from the end of the fixing piece along the radial direction of the bracket body to the bolt hole, and the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole based on the thread specifications of a plurality of nuts.

[0014] In some embodiments, the design method of the pallet bracket further includes: determining the included angle between the end of the bracket body and the center of the first bolt hole close to the end based on the bolt distribution radius on the mounting side of the mounting bracket body, the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole, and the distance from the end of the fixing piece along the radial direction of the bracket body to the center of the bolt hole.

[0015] In some embodiments, based on the bolt distribution radius on the bracket body, the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole, and the distance from the end of the fixing piece along the radial direction of the bracket body to the center of the bolt hole, the included angle between the end of the bracket body and the center of the first bolt hole close to the end is determined based on the following formula:

[0016]

[0017] where θ is the central angle of the end, R is the bolt distribution radius on the mounting side of the mounting bracket body, and L1 is the distance from the tangential end of the fixing piece along the bracket body to the center of the bolt hole, B 1 is the distance from the radial end of the fixing piece along the bracket body to the center of the bolt hole.

[0018] In some embodiments, the design method of the pallet bracket further includes: determining the radial width of the bracket body according to the maximum nut thread specification set on the pallet bracket.

[0019] In some embodiments, the design method of the pallet bracket further includes: determining the radius of the arc-shaped grooves opened on both sides of each fixing piece corresponding to each nut according to the thread specification of each nut.

[0020] In some embodiments, the design method of the pallet bracket further includes: determining the distribution angle of each arc-shaped groove relative to each bolt hole based on the thread specification of each nut.

[0021] In some embodiments, the design method of the pallet bracket further includes: when cutting the pallet bracket, the central angle of the bolt hole distribution on both sides of the cutting position satisfies the following formula:

[0022]

[0023] where θ i is the central angle of the bolt hole distribution on both sides of the cutting position, Z is the number of bolt holes, R is the bolt distribution radius on the installation side of the installation bracket body, is the distance from the tangential end of the i-th fixing piece along the bracket body to the center of the bolt hole, is the distance from the radial end of the i-th fixing piece along the bracket body to the center of the bolt hole, is the distance from the tangential end of the (i + 1)-th fixing piece along the bracket body to the center of the bolt hole, is the distance from the radial end of the (i + 1)-th fixing piece along the bracket body to the center of the bolt hole.

[0024] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: By providing a pallet bracket for installing a plurality of nuts, which is composed of an arc-shaped bracket body, bolt holes distributed circumferentially along the arc-shaped bracket body, and fixing pieces protruding radially outward along the bracket body, the pallet bracket is provided with a plurality of bolt holes, and can install a plurality of nuts and bolts at one time, which is convenient for installation and replacement, and saves costs at the same time; The pallet bracket is small in size and easy to install, and can be installed on the mounting edge in the narrow space of the aero-engine casing, and is not likely to damage the casing. The width of the pallet bracket, the diameter of the bolt holes, and the size of the fixing pieces can be determined by the thread specifications of the nuts, which can effectively ensure the stability and safety of the bolts and nuts installed on the pallet bracket, prevent the nuts from slipping or falling, and prevent the bolts from loosening and shifting. While the fixing pieces play a role in fixing and limiting the nuts, the nuts can move to a certain extent within the bending space of the fixing pieces, so as to facilitate the bolt corresponding to the nut to adaptively align with the screw hole of the nut, making the installation more convenient.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present disclosure can be better understood by describing the exemplary embodiments of the present disclosure in conjunction with the accompanying drawings. In the drawings:

[0027] Figure 1 is a schematic structural diagram of a pallet bracket shown according to an exemplary embodiment of the present disclosure;

[0028] Figure 2 is a schematic structural diagram of the pallet bracket installed on the engine mounting edge shown according to an exemplary embodiment of the present disclosure;

[0029] Figure 3 is a schematic cross-sectional structural diagram of the pallet bracket installed on the engine mounting edge shown according to an exemplary embodiment of the present disclosure;

[0030] Figure 4 is a schematic structural diagram of the pallet bracket when installing nuts shown according to an exemplary embodiment of the present disclosure;

[0031] Figure 5 is a schematic diagram of the structural parameters of the pallet bracket shown according to an exemplary embodiment of the present disclosure;

[0032] Figure 6 is a schematic diagram of the structural parameters of the pallet bracket shown according to another exemplary embodiment of the present disclosure;

[0033] Figure 7 is a schematic diagram of the structural parameters of a single bolt hole and a fixing piece on the pallet bracket shown according to an exemplary embodiment of the present disclosure;

[0034] Figure 8 It is a flowchart of a pallet bracket design method shown according to an exemplary embodiment. Detailed implementation manners

[0035] The following will describe the detailed implementation manners of the present disclosure. It should be noted that in the specific description of these implementation manners, for the sake of concise description, this specification cannot describe all features of the actual implementation manners in detail. It should be understood that in the actual implementation process of any implementation manner, just as in the process of any engineering project or design project, in order to achieve the specific goals of the developer and to meet system-related or business-related restrictions, various specific decisions are often made, and this will also change from one implementation manner to another. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present disclosure, some design, manufacturing, or production changes based on the technical content disclosed in the present disclosure are only conventional technical means and should not be understood as the content of the present disclosure being insufficient.

[0036] Unless otherwise defined, the technical terms or scientific terms used in the claims and the specification should have the ordinary meaning understood by those of ordinary skill in the technical field to which the present disclosure belongs. The "first", "second" and similar terms used in the specification and claims of the present patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "a" or "one" do not indicate a quantity limitation, but indicate that there is at least one. The terms such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalent elements, and do not exclude other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0037] In some related technologies, a fixed bracket is provided for installing nuts. However, since the fixed bracket has a general size, when installing various different specifications of nuts on the fixed bracket, for larger nuts and bolts, the bracket cannot completely wrap the nuts, resulting in poor installation stability. When the bolt hole size on the fixed bracket is smaller than the bolt, the bolt cannot be installed; for smaller-sized bolts and nuts, when installed on the fixed bracket, it is easy to slip or shake; for the nut installation fixed bracket in the related technology, its installation stability and reliability are poor.

[0038] To solve the foregoing technical problems, as Figure 1As shown, a pallet bracket 100 for installing multiple nuts is provided. The pallet bracket 100 may include: a bracket body 110, bolt holes 120, and fixing pieces 130. The bracket body 110 is arc-shaped. The bolt holes 120 are provided on the surface of the bracket body 110 and are distributed along the circumferential direction of the bracket body 110. The fixing pieces 130 protrude from the bracket body 110 in the radial direction of the bracket body 110 and are located on both sides of each bolt hole 120.

[0039] Among them, the bracket body 110 may be arc-shaped, and the radial width of the bracket body 110 is determined based on the thread specifications of multiple nuts. The bracket body 110 may be arc-shaped. The arc-shaped bracket body 110 may be installed on the installation edge of an aero-engine casing. The radius of the arc-shaped bracket body 110 may be determined based on the size of the casing installation edge. The width of the bracket body 110 along the radial direction is determined based on the thread hole specifications of multiple nuts. The bracket body 110 may be used to install nuts 200. There may be three or more nuts 200 installed on the bracket body 110. Among them, as Figure 2 , 3 shown, two nuts 200 installed on the bracket body 110 may be fixedly connected to the aero-engine casing through countersunk head screws 300, so that the bracket body 110 is fixedly connected to the aero-engine. The radius of the arc-shaped bracket body 110 may be determined based on the size of the casing installation edge and is the same as the radius of the casing installation edge. The width of the bracket body 110 along the radial direction may be determined based on the thread hole specifications of multiple nuts 200, so that the width of the bracket body 110 along the radial direction is greater than or equal to the sizes of multiple nuts, enabling the nuts to be stably installed on the bracket body 110.

[0040] The bolt holes 120 may be distributed along the circumferential direction of the bracket body 110 for installing bolts that cooperate with the nuts 200. The aperture of the bolt holes 120 is determined based on the thread specifications of multiple nuts 200. The bolt holes 120 may be provided on the bracket body 110 and are distributed along the circumferential direction of the bracket body 110 for installing bolts that cooperate with the nuts 200. There may be three or more nuts 200 installed on the bracket body 110. Therefore, three or more bolt holes 120 may be provided corresponding to the nuts 200. The distribution of the bolt holes 120 is determined based on the installation bolt requirements on the engine casing installation edge. The aperture of the bolt holes 120 is determined based on the thread specifications of multiple nuts 200. The thread specifications of multiple nuts 200 may be the same or different. The thread specifications of the nuts 200 are selected according to the installation bolt requirements on the engine casing installation edge. The aperture of the bolt holes 120 is determined based on the thread specifications of the nuts 200. Each bolt hole 120 corresponds to the thread specification of each nut 200, enabling the bolts corresponding to each nut 200 to be correspondingly installed in each bolt hole 120.

[0041] The fixing piece 130 can protrude from the bracket body 110 in the radial direction of the bracket body 110 and is located on both sides of each bolt hole 120 for bending to fix the nut 200 that cooperates with the bolt. The distance from the end of the fixing piece 130 along the radial direction of the bracket body 110 to the bolt hole 120 and the distance from the end of the fixing piece 130 along the tangential direction of the bracket body 110 to the center of the bolt hole 120 are determined based on the thread specifications of multiple nuts 200. The fixing piece 130 can protrude from both sides in the radial direction of the bracket body 110. The fixing piece 130 is arranged on both sides of each bolt hole 120. The fixing piece 130 can be a structure integrally formed with the bracket body 110. The fixing piece 130 can be made of sheet metal material. When installing the nut 200, the fixing piece 130 can be bent to fix the nut 200. The nut 200 and the bolt hole 120 are installed in one-to-one correspondence. The fixing piece 130 arranged on the outer circumferential side of the bracket body 110 is bent inward along the radial direction of the bracket body 110, and the fixing piece 130 arranged on the inner circumferential side of the bracket body 110 is bent outward along the radial direction of the bracket body 110. As Figure 4 shown, after the fixing piece 130 is bent, the cross section is approximately C-shaped. The fixing piece 130 can wrap the nut 200, thereby pressing the nut 200, so as to realize the fixation of the nut 200. The nut 200 can move to a certain extent within the wrapped space where the fixing piece 130 is bent, so as to facilitate the bolt corresponding to the nut 200 to adaptively align with the screw hole of the nut 200. When the bolt corresponding to the nut 200 applies a tightening torque, the fixing piece 130 wrapping the nut 200 can play a role similar to that of a wrench in fixing and limiting the nut 200, ensuring that when a tightening torque is applied to the bolt, the nut 200 does not move and the torque can be normally applied. The distance from the end of the fixing piece 130 along the radial direction of the bracket body 110 to the bolt hole 120 and the distance from the end of the fixing piece 130 along the tangential direction of the bracket body 110 to the center of the bolt hole 120 are determined based on the thread specifications of multiple nuts 200. The size of the fixing piece 130 can be represented by the distance from the end of the fixing piece 130 along the radial direction of the bracket body 110 to the bolt hole 120 and the distance from the end of the fixing piece 130 along the tangential direction of the bracket body 110 to the center of the bolt hole 120, and can be determined based on the thread specifications of multiple nuts 200. The distance from the end of each fixing piece 130 along the radial direction of the bracket body 110 to the bolt hole 120 and the distance from the end of the fixing piece 130 along the tangential direction of the bracket body 110 to the center of the bolt hole 120 can correspond to the thread specifications of each nut one by one, which can enable the fixing piece 130 and the nut 200 to cooperate with each other, effectively improving the stability of nut installation and preventing the nut from slipping and falling.

[0042] By providing a pallet bracket 100 for installing multiple nuts, which is composed of an arc-shaped bracket body 110, bolt holes 120 circumferentially distributed along the arc-shaped bracket body 110, and fixing pieces 130 radially protruding outward along the bracket body 110. The pallet bracket 100 is provided with multiple bolt holes 120, enabling the installation and replacement of multiple nuts 200 and bolts at one time, facilitating the batch installation and replacement of nuts 200, and saving costs simultaneously. The pallet bracket 100 is small in size and easy to install, and can be installed on the mounting edge in the narrow space of the aero-engine casing without easily damaging the casing. The width of the pallet bracket 100, the diameter of the bolt holes 120, and the size of the fixing pieces 130 can be determined by the thread specifications of the nuts 200, effectively ensuring the stability and safety of the bolts and nuts 200 installed on the pallet bracket 100, preventing the slippage or dropping of the nuts 200 and the loosening and deviation of the bolts. In addition, while the fixing pieces 130 play a role in fixing and limiting the nuts 200, the nuts 200 can move within the bending space of the fixing pieces 130 to facilitate the corresponding bolts to adaptively align with the screw holes of the nuts 200.

[0043] In some embodiments, such as Figure 5 , 6 , as shown in FIGS. 7, the end central angle of the bracket body 110 satisfies the following formula, where the end central angle is the angle with the center of the bracket body 110 as the center, between the end of the bracket body 110 and the center of the first bolt hole 120 close to the end.

[0044]

[0045] Where θ is the end central angle, R is the bolt distribution radius on the mounting edge of the mounting bracket body 110, L 1 is the distance from the tangential end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, and B 1 is the distance from the radial end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120. The distance between the first bolt hole 120 close to the end of the bracket body 110 and the end of the bracket body 110 needs to ensure a certain distance to fix the nut 200 and ensure the stability and safety of the pallet bracket 100. The distance between the first bolt hole 120 close to the end of the bracket body 110 and the end of the bracket body 110 can be limited by restricting the end central angle. The end central angle can be the angle with the center of the bracket body 110 as the center, between the end of the bracket body 110 and the first bolt hole 120 close to this end. The end central angles at both ends of the bracket body 110 can both satisfy the formula:

[0046]

[0047] θ is the included angle between the end of the bracket body 110 and the first bolt hole 120 near this end, that is, the end center angle, R is the bolt distribution radius on the installation side of the installation bracket body 110, L 1 is the distance from the tangential end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, which can be determined by the thread specification of the nut 200 corresponding to the fixing piece 130, B 1 is the distance from the radial end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, which can be determined by the thread specification of the nut 200 corresponding to the fixing piece 130. The end center angle satisfies the formula, which can ensure the distance between the first bolt hole 120 near the end of the bracket body 110 and the end of the bracket body 110, so as to fix the nut 200 and improve the stability and safety of the pallet bracket 100.

[0048] In some embodiments, such as Figure 5 、 6 、as shown in Figure 7, the end center angle of the bracket body 110 satisfies the following formula:

[0049]

[0050] where θ is the end center angle, R is the bolt distribution radius on the installation side of the installation bracket body 110, L 1 is the distance from the tangential end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, B 1 is the distance from the radial end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120. The end center angle θ is the included angle between the end of the bracket body 110 and the center of the first bolt hole 120 near the end, and R - B 1 is the radius of the inner circle arc of the bracket body 110, and its value can satisfy the formula. When fixing the nut 200, it can effectively improve the stability and safety of the pallet bracket 100.

[0051] In some embodiments, such as Figure 1As shown in the figure, the bracket body 110 is provided with arc-shaped grooves 111 extending radially on both sides of the fixing piece 130. The radius of the arc-shaped grooves 111 is determined based on the thread specification of the nut 200. The arc-shaped grooves 111 can be provided on the bracket body 110, on both sides of the fixing piece 130, and extend in the radial direction of the bracket body 110. The radii of the arc-shaped grooves 111 on both sides of the same fixing piece 130 can be the same. The radius of the arc-shaped grooves 111 can be determined based on the thread specification of the nut 200 corresponding to the fixing piece 130. For the same fixing piece 130, the radius dimensions of the arc-shaped grooves 111 on both sides can be the same; for the two fixing pieces corresponding to the same nut 200, the radii of the two sets of arc-shaped grooves 111 respectively corresponding to the two fixing pieces can be different, that is, for the two fixing pieces corresponding to the same nut 200, the radii of the arc-shaped grooves 111 opened on both sides of the fixing piece 130 on the outer circumferential side of the bracket body 110 are different from the radii of the arc-shaped grooves 111 opened on both sides of the fixing piece 130 on the inner circumferential side of the bracket body 110. When bending the fixing piece 130, the setting of the arc-shaped grooves 111 can effectively prevent material tearing and deformation during the bending process of the fixing piece 130, effectively improve the safety of the fixing piece 130, and extend the service life of the fixing piece 130.

[0052] In some embodiments, as Figure 1 shown, an arc-shaped avoidance groove 131 is provided at one end of the fixing piece 130 radially away from the bolt hole 120. The radius of the arc-shaped avoidance groove 131 is determined based on the thread specification of the nut 200. The arc-shaped avoidance groove 131 can be provided at one end of the fixing piece 130 radially away from the bolt hole 120. The centers of the two arc-shaped avoidance grooves 131 respectively provided on a set of fixing pieces 130 extending radially along the bracket body 110 can be coaxially arranged with the center of the bolt hole 120 corresponding to the fixing piece 130. The dimensions of the arc-shaped avoidance grooves 131 opened on the two fixing pieces 130 extending radially at both ends of the bracket body 110 corresponding to the same nut 200 can be the same. The radius of the arc-shaped avoidance groove 131 can be determined based on the thread specification of the nut 200. When bending the fixing piece 130 to fix the nut 200, the arc-shaped avoidance groove 131 provided at one end of the fixing piece 130 radially away from the bolt hole 120 can avoid the screw hole in the center of the nut 200 while fixing the nut 200, prevent the screw hole of the nut 200 from being blocked, and facilitate the installation of the bolt at the same time.

[0053] Based on the same inventive concept, the present disclosure also provides a design method for a pallet bracket 100, wherein, as Figure 1 shown, the pallet bracket 100 includes: a bracket body 110, the bracket body 110 is an arc-shaped plate, bolt holes 120, the bolt holes 120 are distributed along the circumference of the bracket body 110, fixing pieces 130, the fixing pieces 130 protrude from the bracket body 110 in the radial direction of the bracket body 110 and are located on both sides of each bolt hole 120; asFigure 8 As shown, the design method of the pallet bracket 100 may include: S110: determining the radius of the bracket body 110 based on the bolt distribution radius on the mounting edge of the mounting bracket body 110;

[0054] S120: determining the number of bolt holes 120 and the number of fixing pieces 130 on the pallet bracket 100 based on the number of bolts; S130: determining the aperture of the bolt holes 120, the distance from the end of the fixing piece 130 along the radial direction of the bracket body 110 to the bolt holes 120, and the distance from the end of the fixing piece 130 along the tangential direction of the bracket body 110 to the center of the bolt holes 120 based on the thread specifications of multiple nuts 200. Based on the bolt distribution radius on the mounting edge of the mounting bracket body 110, the radius of the bracket body 110 is determined. Multiple bolt installation positions may be provided on the engine mounting edge. The shape and radius of the bracket body 110 can be determined by the multiple bolt positions on the mounting edge. The mounting edge may be arc-shaped. The bolt distribution radius on the mounting edge can be obtained based on the arrangement of multiple bolt installation positions on the mounting edge, thereby determining the radius of the bracket body 110; the number of bolt holes 120 and the number of fixing pieces 130 on the pallet bracket 100 can be determined based on the number of bolts on the mounting edge. The number of bolt holes 120 on the pallet bracket 100 is the same as the number of bolts on the mounting edge. The fixing piece 130 is a structure extending radially towards both ends along the bracket body 110. Therefore, for each bolt hole 120, two fixing pieces 130 extending radially along the bracket body 110 are correspondingly provided; based on the thread specifications of multiple nuts 200, the aperture of the bolt holes 120, the distance from the end of the fixing piece 130 along the radial direction of the bracket body 110 to the bolt holes 120, and the distance from the end of the fixing piece 130 along the tangential direction of the bracket body 110 to the center of the bolt holes 120 are determined; the bolt holes 120 are used to install bolts. According to the thread specifications of each nut 200 installed on the pallet bracket 100, the diameter of each bolt matching the nut 200 is determined, thereby determining the aperture of the bolt holes 120. Since the fixing piece 130 needs to be bent to wrap and fix the corresponding nut 200 so as to clamp the nut 200, according to the thread specifications of the nut 200, the distance from the end of the fixing piece 130 along the radial direction of the bracket body 110 to the bolt holes 120 and the distance from the end of the fixing piece 130 along the tangential direction of the bracket body 110 to the center of the bolt holes 120 can be determined to ensure that the fixing piece 130 can wrap the nut 200. Through the design method of the pallet bracket 100, parameters such as the shape and radius of the pallet bracket 100, the number and distribution mode of the bolt holes 120 can be determined simply and quickly, thereby determining the structure of the pallet bracket 100.

[0055] In some embodiments, such as Figure 5 、 6, as shown in FIGS. 6 and 7, the design method of the pallet bracket 100 may further include: determining the included angle between the end of the bracket body 110 and the center of the first bolt hole 120 close to the end based on the bolt distribution radius on the mounting edge of the mounting bracket body 110, the distance from the tangential end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, and the distance from the radial end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120. A certain distance needs to be ensured between the first bolt hole 120 close to the end of the bracket body 110 and the end of the bracket body 110 to fix the nut 200 and ensure the stability and safety of the pallet bracket 100. The included angle between the end of the bracket body 110 and the center of the first bolt hole 120 close to the end is the end center angle. By determining the end center angle, it is convenient to determine the distance between the first bolt hole 120 close to the end of the bracket body 110 and the end of the bracket body 110, thereby ensuring the stability and safety of the pallet bracket 100. Based on the bolt distribution radius on the mounting edge of the mounting bracket body 110, the distance from the tangential end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, and the distance from the radial end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, the size of the end center angle can be determined to ensure the stability and safety of the pallet bracket 100.

[0056] In some embodiments, such as Figure 5 , 6 , as shown in FIGS. 6 and 7, based on the bolt distribution radius on the bracket body 110, the distance from the tangential end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, and the distance from the radial end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, the included angle between the end of the bracket body 110 and the center of the first bolt hole 120 close to the end can be determined based on the following formula:

[0057]

[0058] where θ is the end center angle, R is the bolt distribution radius on the mounting edge of the mounting bracket body 110, L 1 is the distance from the tangential end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, R is the bolt distribution radius on the mounting edge of the mounting bracket body 110, B 1 is the distance from the radial end of the fixing piece 130 along the bracket body 110 to the center of the bolt hole 120, R - B 1 is the radius of the inner circular arc of the bracket body 110, the end center angle θ is the included angle between the end of the bracket body 110 and the center of the first bolt hole 120 close to the end, and its value can be determined by calculation, B 1is the distance from the end of the fixing piece 130 along the radial direction of the bracket body 110 to the center of the bolt hole 120. When the end center angle θ satisfies the above formula, the pallet bracket 100 can have better stability and safety.

[0059] In some embodiments, the design method of the pallet bracket 100 may further include: determining the radial width of the bracket body 110 according to the maximum nut thread specification set on the pallet bracket 100. The width of the bracket body 110 along the radial direction is uniform. The radial width of the bracket body 110 can be determined according to the maximum nut thread specification set on the pallet bracket 100. The width of the bracket body 110 in the radial direction can be greater than or equal to the installation width corresponding to the maximum nut thread specification installed on the pallet bracket 100, which can ensure that when the nut 200 is installed on the pallet bracket 100, the bracket body 110 and the fixing piece 130 can stably wrap the nut 200, improving the stability of the nut 200 installation.

[0060] In some embodiments, the design method of the pallet bracket 100 may further include: determining the radius of the arc-shaped grooves 111 opened on both sides of the corresponding fixing piece 130 for each nut according to the thread specification of each nut. For each nut 200 with a different thread specification, the size of the corresponding fixing piece 130 for fixing the nut 200 can be different, and the radius of the arc-shaped grooves 111 opened on both sides of the corresponding fixing piece 130 for each nut 200 can be different. Determining the radius of the arc-shaped grooves 111 opened on both sides of the corresponding fixing piece 130 for each nut 200 according to the thread specification of each nut 200 can facilitate the fixing of each nut 200 by the corresponding fixing piece 130, improving the stability. The radial width of the bracket body 110 can be determined by the maximum nut thread specification set on the pallet bracket 100. For nuts with a small thread specification, the radius of the arc-shaped grooves 111 opened on both sides of the corresponding fixing piece 130 can be increased, so that the bendable part of the fixing piece 130 corresponding to the nut with a small thread specification is increased. When bending the fixing piece 130, it can ensure that the nut with a small thread specification is fixed on the pallet bracket 100, is not prone to deviation, and has high stability.

[0061] In some embodiments, the design method of the pallet bracket 100 may further include: determining the distribution angle of each arc-shaped groove 111 relative to each bolt hole 120 based on the thread specification of each nut. The distribution angle of each arc-shaped groove 111 relative to each bolt hole 120 is the central angle of the center of the arc-shaped groove 111 and the center of the bolt hole 120 relative to the center of the arc-shaped bracket body 110. For example Figure 7 As shown, for the arc-shaped groove 111 provided on the outer circle of the bracket body 110, the distribution angle relative to the bolt hole 120 is denoted as α 1 For the arc-shaped groove 111 provided on the inner circle of the bracket body 110, the distribution angle relative to the bolt hole 120 is denoted as α 2; Based on the thread specifications of each nut, determine the α on the bracket body 110 corresponding to each nut 1 and α 2 , which can determine the center position of the arc-shaped groove 111, facilitating the positioning of the arc-shaped groove 111.

[0062] In some embodiments, the design method of the pallet bracket 100 may further include: when cutting the pallet bracket 100, the central angles of the bolt holes distributed on both sides of the cutting position satisfy the following formula:

[0063]

[0064] where θ i is the central angle of the bolt holes distributed on both sides of the cutting position, Z is the number of bolt holes 110, R is the bolt distribution radius on the mounting edge of the mounting bracket body 110, is the distance from the tangential end of the i-th fixing piece 130 along the bracket body 110 to the center of the bolt hole, is the distance from the radial end of the i-th fixing piece 130 along the bracket body 110 to the center of the bolt hole, is the distance from the tangential end of the (i + 1)-th fixing piece 130 along the bracket body 110 to the center of the bolt hole, is the distance from the radial end of the (i + 1)-th fixing piece 130 along the bracket body 110 to the center of the bolt hole. The pallet bracket 100 can be cut to obtain multiple pallet brackets that are convenient to install on the mounting edge of the narrow space of the engine. One side of the cutting position is the i-th bolt hole, and the other side is the (i + 1)-th bolt hole. The central angle of the bolt holes distributed on both sides of the cutting position is the central angle of the two bolt holes relative to the center of the bracket body 110, denoted as θ i . When cutting, the central angle of the bolt holes distributed on both sides of the cutting position satisfies the above formula. After cutting, the i-th bolt hole of the original pallet bracket 100 serves as the end bolt hole of one of the cut pallet brackets, and the (i + 1)-th bolt hole of the original pallet bracket 100 serves as the end bolt hole of the other cut pallet bracket. The end bolt holes of the two cut pallet brackets can still meet the end central angle requirements:

[0065]

[0066] It can ensure the stability and safety when installing nuts 200 and bolts at both ends of the cut pallet bracket.

[0067] This application uses specific terms to describe the embodiments of this application. For example, "one embodiment", "an embodiment", and / or "some embodiments" mean a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more at different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.

[0068] In the context of this application, unless the context clearly indicates an exception, words such as "a", "an", "one", and / or "the" are not specifically singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. A method or device may also include other steps or elements.

[0069] Similarly, it should be noted that, in order to simplify the description of this application disclosure and thus help the understanding of one or more embodiments of the application, in the previous description of the embodiments of this application, sometimes multiple features are grouped into one embodiment, drawing, or description thereof. However, this disclosure method does not mean that the features required by the subject matter of this application are more than those mentioned in the claims. In fact, the features of the embodiments are fewer than all the features of the single embodiments disclosed above.

[0070] The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure is only an example and does not constitute a limitation to this application. Although not explicitly stated here, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are proposed in this application, so such modifications, improvements, and corrections still fall within the spirit and scope of the embodiments of this application.

Claims

1. A pallet bracket for installing multiple nuts, wherein, the pallet bracket comprises: a bracket body, the bracket body is arc-shaped, and the radial width of the bracket body is determined based on the thread specifications of the multiple nuts; bolt holes, the bolt holes are circumferentially distributed along the bracket body for installing bolts that cooperate with the nuts, and the aperture of the bolt holes is determined based on the thread specifications of the multiple nuts; fixing pieces, the fixing pieces protrude from the bracket body in the radial direction of the bracket body and are located on both sides of each bolt hole, and are used to be bent to fix the nuts that cooperate with the bolts. The distance from the end of the fixing piece along the radial direction of the bracket body to the bolt hole and the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole are determined based on the thread specifications of the multiple nuts.

2. The pallet bracket for installing multiple nuts according to claim 1, wherein, the end central angle of the bracket body satisfies the following formula, wherein the end central angle is an angle with the center of the bracket body as the center and between the end of the bracket body and the center of the first bolt hole close to the end, Wherein, θ is the central angle of the end portion, R is the bolt distribution radius on the mounting edge for mounting the bracket body, L 1 is the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole, B 1 is the distance from the end of the fixing piece along the radial direction of the bracket body to the center of the bolt hole.

3. The pallet bracket for installing multiple nuts according to claim 2, wherein, the end central angle of the bracket body satisfies the following formula: Wherein, θ is the central angle of the end portion, R is the bolt distribution radius on the installation side for installing the bracket body, L 1 is the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole, B 1 is the distance from the end of the fixing piece along the radial direction of the bracket body to the center of the bolt hole.

4. The pallet bracket for installing multiple nuts according to claim 1, wherein, arc-shaped grooves extending radially are provided on both sides of the bracket body where the fixing pieces are located, and the radius of the arc-shaped grooves is determined based on the thread specifications of the nuts.

5. The pallet bracket for installing multiple nuts according to claim 1, wherein, an arc-shaped avoidance groove is provided at one end of the fixing piece radially away from the bolt hole, and the radius of the arc-shaped avoidance groove is determined based on the thread specifications of the nuts.

6. A design method for a pallet bracket, wherein, the pallet bracket comprises: a bracket body, the bracket body is an arc-shaped plate, bolt holes, the bolt holes are circumferentially distributed along the bracket body, and fixing pieces, the fixing pieces protrude from the bracket body in the radial direction of the bracket body and are located on both sides of each bolt hole; the design method for the pallet bracket comprises: determining the radius of the bracket body based on the bolt distribution radius on the installation edge where the bracket body is installed; determining the number of bolt holes and the number of fixing pieces on the pallet bracket based on the number of bolts; determining the aperture of the bolt holes, the distance from the end of the fixing piece along the radial direction of the bracket body to the bolt hole, and the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole based on the thread specifications of multiple nuts.

7. The design method for a pallet bracket according to claim 6, wherein, The design method of the pallet bracket further includes: determining an angle between the end of the bracket body and the center of the first bolt hole adjacent to the end based on the bolt distribution radius on the mounting edge for mounting the bracket body, the distance from the tangential end of the fixing piece along the bracket body to the center of the bolt hole, and the distance from the radial end of the fixing piece along the bracket body to the center of the bolt hole.

8. The design method of the pallet bracket according to claim 7, wherein, Based on the bolt distribution radius on the bracket body, the distance from the tangential end of the fixing piece along the bracket body to the center of the bolt hole, and the distance from the radial end of the fixing piece along the bracket body to the center of the bolt hole, the angle between the end of the bracket body and the center of the first bolt hole adjacent to the end is determined according to the following formula: Wherein, θ is the central angle of the end portion, R is the bolt distribution radius on the mounting side for mounting the bracket body, L 1 is the distance from the end of the fixing piece along the tangential direction of the bracket body to the center of the bolt hole, B 1 is the distance from the end of the fixing piece along the radial direction of the bracket body to the center of the bolt hole.

9. The design method of the pallet bracket according to claim 6, wherein, The design method of the pallet bracket further includes: determining the radial width of the bracket body according to the maximum nut thread specification provided on the pallet bracket.

10. The design method of the pallet bracket according to claim 6, wherein, The design method of the pallet bracket further includes: determining the radius of the arc-shaped groove opened on both sides of the fixing piece corresponding to each nut according to the thread specification of each nut.

11. The design method of the pallet bracket according to claim 6, wherein, The design method of the pallet bracket further includes: determining the distribution angle of each arc-shaped groove relative to each bolt hole based on the thread specification of each nut.

12. The design method of the pallet bracket according to claim 6, wherein, The design method of the pallet bracket further includes: when cutting the pallet bracket, the central angles of the bolt holes distributed on both sides of the cutting position satisfy the following formula: Among them, θ i is the central angle of the distribution of the bolt holes on both sides of the cutting position, Z is the number of the bolt holes, and R is the bolt distribution radius on the installation edge for installing the bracket body. is the distance from the end of the i-th fixing piece along the tangential direction of the bracket body to the center of the bolt hole. is the distance from the end of the i-th fixing piece along the radial direction of the bracket body to the center of the bolt hole. is the distance from the end of the (i + 1)-th fixing piece along the tangential direction of the bracket body to the center of the bolt hole. is the distance from the end of the (i + 1)-th fixing piece along the radial direction of the bracket body to the center of the bolt hole.

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