CN113211348A

CN113211348A - Device for accurately positioning screw assembly

Info

Publication number: CN113211348A
Application number: CN202110517469.2A
Authority: CN
Inventors: 庞昊; 张东; 黄先达
Original assignee: SICHUAN YAMEI POWER TECHNOLOGY CO LTD
Current assignee: SICHUAN YAMEI POWER TECHNOLOGY CO LTD
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-08-06
Anticipated expiration: 2041-05-12
Also published as: CN113211348B

Abstract

The invention discloses a device for accurately positioning a screw assembly, which comprises a base, wherein an upright post is arranged in the middle of the base, a shaft sleeve and a compression spring which can reciprocate up and down are nested on the upright post, one end of the compression spring is contacted with the bottom of the shaft sleeve, and the other end of the compression spring is contacted with the base; the outer wall of the shaft sleeve is hinged with a plurality of support rods, the support rods are distributed in an even ring array mode through the axis of the shaft sleeve, the other end of each support rod is provided with a screw fixing device, the screw fixing device can movably fix the nut portion of a screw, and a stud of the screw is kept in a vertical state. The invention provides a novel accurate positioning device for the screw assembly, which can assist the process of fixedly connecting two mechanical structures through a plurality of groups of screw assemblies, realize that a plurality of groups of screws simultaneously penetrate through fixing holes of the two mechanical structures, ensure that dislocation and deformation do not appear between the two mechanical structures, has extremely balanced stress, high installation accuracy, saves manpower and material resources, shortens the installation period and is suitable for wide popularization and application.

Description

Device for accurately positioning screw assembly

Technical Field

The invention relates to the technical field of mechanical installation auxiliary equipment, in particular to a device for accurately positioning a screw assembly.

Background

Screw assembly connections are the most common releasable connection of two mechanical structures. Some mechanical structure when connecting through screw assembly, can appear on the connection plane and need a plurality of screw assemblies to be annular arrange or square arrange and connect fixedly to it is firm to guarantee to connect between two mechanical structure, and the atress is even. Two mechanical structure's the connection face when fixed a plurality of screw assembly, in screw assembly's installation, two mechanical structure's the connection face can take place slight dislocation at most, consequently in order to guarantee every screw assembly homoenergetic normal mount, two mechanical structure's screw mounting hole can set up into the growing up strip, and two mechanical structure are through a plurality of in-processes like this, even there is slight dislocation or deformation, can not influence screw assembly's normal packing yet. In the existing installation process, the installation position of the screw assembly is generally estimated through manual observation or a simple positioning mode, so that the requirement on the spatial arrangement position of the screw assembly is not accurately met.

Under the general condition, it is all right that two mechanical structure only need connect the fastening, slight dislocation between the two does not influence the fixed stability of two mechanical structure, but in some precision instruments, require that the atress is very balanced between two mechanical structure, consequently to connecting between two mechanical structure extremely high, dislocation and deformation show can not appear, just so be in certain accurate within range to the mounted position of whole screw subassembly, and only need realize the accurate installation of whole screw subassembly through the mode of artifical installation, it is extremely time-consuming and laborious, and be difficult to guarantee the precision.

Disclosure of Invention

The invention aims to provide a device for accurately positioning screw components, which can position a plurality of groups of screw components, ensures balanced stress of connecting parts and is not easy to deform and misplace.

The invention is realized by the following technical scheme: a device for accurately positioning a screw assembly comprises a base, wherein an upright post is arranged in the middle of the base, a shaft sleeve and a compression spring which can reciprocate up and down are nested on the upright post, one end of the compression spring is in contact with the bottom of the shaft sleeve, and the other end of the compression spring is in contact with the base; the outer wall of the shaft sleeve is hinged with a plurality of support rods, the support rods are distributed in an even ring array mode through the axis of the shaft sleeve, the other end of each support rod is provided with a screw fixing device, the screw fixing device can movably fix the screw head portion of the screw, and the stud of the screw is kept in a vertical state.

The working principle of the technical scheme is that the fixing of a plurality of screws is realized through the support rod and the screw fastening device, and each screw can be ensured to be on a unified reference plane, so that when two mechanical structures needing the fixing of a plurality of groups of screw components are connected, the stud of the plurality of screws can penetrate through the fixing holes of the two mechanical structures simultaneously, the fixing of each screw position is ensured, the dislocation and deformation appearing between the two mechanical structures connected through the plurality of groups of screw components are ensured, and the stress is very balanced.

In order to better realize the invention, the screw fixing device further comprises a base, a groove is arranged in the base, a chute is arranged at one end of the groove, a stop block for closing the chute is arranged at the end part of the base, a sliding block is arranged in the chute, a pressure spring is nested at one end of the sliding block, a cavity for accommodating a screw head of a screw is formed by the other end of the sliding block and the groove, one end of the pressure spring is connected with the sliding block, and the other end of the pressure spring is connected with the stop block.

In order to better realize the invention, a clamping groove clamped on the support rod is further arranged at the lower part of the base, one end of the base is fixedly connected with the stop block through at least one screw, and the other end of the base is also fixedly connected with the support rod through at least one screw.

In order to better realize the invention, furthermore, one end of each support rod hinged on the outer wall of the shaft sleeve is provided with a limit block, and the support rods can only swing up and down at a limited position under the action of the limit blocks.

In order to better realize the invention, the upright column is a hollow tube, the top of the upright column is movably nested with a pressing block, and the lower part of the upright column is fixedly connected with the base through a bolt.

In order to better realize the invention, the shaft sleeve is further composed of an upper embedded block and a lower supporting block, the supporting rod is connected to the outer wall of the upper embedded block, a plurality of regulating bolts vertical to the middle upright post are arranged on the lower supporting block, and the upper embedded block and the lower supporting block are fixedly connected through fixing bolts.

In order to better realize the invention, the base is a disc, the circle center of the disc is positioned on the axis of the upright post, the upper part of the base is provided with a structure for fixing parts, and the lower part of the base is provided with at least three leveling nuts.

Compared with the prior art, the invention has the following advantages and beneficial effects:

(1) the invention provides a novel accurate positioning device for the screw assembly, which can assist the process of fixedly connecting two mechanical structures through a plurality of groups of screw assemblies, realize that a plurality of groups of screws simultaneously penetrate through fixing holes of the two mechanical structures, ensure that dislocation and deformation do not occur between the two mechanical structures, and have extremely balanced stress;

(2) according to the invention, the novel accurate positioning device for the screw assembly is provided, so that the accurate installation of a plurality of groups of screw assemblies is realized, the labor cost is greatly saved, the installation period is shortened, the higher installation accuracy can be kept, and the device is suitable for wide popularization and application.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a perspective view of the screw fixing device according to the present invention;

FIG. 5 is a schematic cross-sectional view of the screw fixing device according to the present invention;

FIG. 6 is a diagram of the structure of a part for which the present invention is desired;

FIG. 7 is a schematic perspective view of the present invention in use;

fig. 8 is a schematic cross-sectional view of the present invention in a specific use.

Wherein: the device comprises a base, a column 2, a shaft sleeve 3, a compression spring 4, a support rod 5, a screw fixing device 6, a base 61, a stop block 62, a slide block 63, a pressure spring 64, a screw 65, a screw 7, a screw 8, a pressing block 9, a part A and a part B10.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

the main structure of the embodiment is as shown in fig. 1-3, and comprises a base 1, wherein an upright post 2 is arranged in the middle of the base 1, a shaft sleeve 3 and a compression spring 4 which can reciprocate up and down are nested on the upright post 2, one end of the compression spring 4 is in contact with the bottom of the shaft sleeve 3, and the other end of the compression spring is in contact with the base 1; the outer wall of the shaft sleeve 3 is hinged with a plurality of support rods 5, the support rods 5 are distributed in an even ring array mode through the axis of the shaft sleeve 3, the other end of each support rod 5 is provided with a screw fixing device 6, the screw fixing device 6 can movably fix the screw head part of the screw 7, and the stud of the screw 7 is kept in a vertical state.

The part to be mounted, as shown in fig. 6, comprises a part a9 and a part b10, wherein the part b10 is arranged inside or outside the part a9 and is fixedly connected with the top of the part a9 through a plurality of screw assemblies in an annular array.

When the component a9 and the component b10 are installed by using the device provided by the embodiment, if the component b10 is arranged inside the component a9, the screws 7 are movably fixed on the screw fixing devices 6 at the ends of the supporting rods 5 at corresponding positions according to the positions and the number of the through holes on the component b10, then the through holes in the middle of the component b10 are sleeved on the supporting column 2, and each through hole on the component b10 penetrates through the stud at the upper part of the screw 7 at the corresponding position. Compressing the shaft sleeve 3 to compress the compression spring 4 at the lower part of the shaft sleeve 3, then leading the device provided with the part b10 to enter the part a9 through a large hole at the lower part of the part a9, adjusting the position of the part a9 to lead the through hole position of the part a9 to correspond to the position of a movable fixing screw 7 on a screw fixing device 6 in the device of the embodiment, then removing the pressure at the upper part of the shaft sleeve 3 to lead the compression spring 4 to push the shaft sleeve 3 to slide on the upright post 2, simultaneously driving each supporting rod 5 and the screw fixing device 6 arranged at the end part of the supporting rod 5, thereby realizing that all screws 7 move upwards integrally until the studs of all screws 7 pass through the through holes at the top part a9, at the moment, leading the part a9 to be in contact with the part b10 and complete the sleeving operation of all screws 7, then mounting a gasket on the stud of each extended screw 7 from the upper part b10, and sequentially mounting nuts until all screw assemblies are completed, the fixation of the part a9 and the part b10 is realized, as shown in fig. 7 and 8.

If the part b10 is arranged outside the part a9, the screws 7 are movably fixed on the screw fixing devices 6 at the ends of the supporting rods 5 at the corresponding positions according to the positions and the number of the through holes on the part a9, then the through holes in the middle of the part a9 are sleeved on the supporting column 2, and each through hole on the part a9 penetrates through the stud at the upper part of the screw 7 at the corresponding position. Then, a part b10 is installed on the upper part of the device with the part a9, the position of the part b10 is adjusted, the position of a through hole of the part b10 corresponds to the position of a movable fixing screw 7 on the screw fixing device 6 in the device of the embodiment, each through hole of the part b10 is sleeved in a stud of the screw 7, at the moment, the part a9 is in contact with the part b10, the sleeving operation of all the screws 7 is completed, then, a gasket is installed on the stud of each extending screw 7 from the upper part of the part b10, nuts are sequentially installed, and all screw assemblies are installed until the installation of all the screw assemblies is completed, so that the part a9 and the part b10 are fixed, as shown in fig. 7 and fig. 8.

Example 2:

in this embodiment, on the basis of the above embodiment, the structure of the screw fixing device 6 is further limited, as shown in fig. 4 and fig. 5, the screw fixing device 6 includes a base 61, a groove is provided in the base 61, a sliding groove is provided at one end of the groove, a stopper 62 for closing the sliding groove is provided at an end of the base 61, a sliding block 63 is provided in the sliding groove, a pressure spring 64 is nested at one end of the sliding block 63, a cavity for accommodating the screw head of the screw 7 is formed by the other end of the sliding block and the groove, one end of the pressure spring 64 is connected to the sliding block 63, and the other end of the pressure spring is connected to the stopper 62. When the screw 7 is fixed, the pushing slide block 63 only needs to slide in the sliding groove, the pressure spring 64 is compressed, then the screw head of the screw 7 is placed in a cavity formed by the slide block 63 and the groove, the slide block 63 is loosened, the slide block 63 compresses the screw head of the screw 7 under the action of the pressure spring 64, and the stud of the screw 7 is enabled to be in an upward vertical state. The stopper 62 is to provide a supporting force for the compression spring 64, the stopper 62 and the base 61 may be an integral structure, and for convenience of installing the slider 63 and the compression spring 64, the stopper 62 and the base 61 are selectively and separately arranged. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.

Example 3:

in this embodiment, the structure of the screw fixing device 6 is further limited on the basis of the above embodiments, as shown in fig. 4 and 5, a clamping groove clamped on the support rod 5 is arranged at the lower part of the base 61, one end of the base 61 is fixedly connected with the stopper 62 through at least one screw 65, and the other end is also fixedly connected with the support rod 5 through at least one screw 65. The screw fixing device 6 is clamped with the end part of the support rod 5 through a clamping groove in the lower part of the base 61 and is fixed through a screw 65, a stop block 62 and the base 61 are separately arranged for conveniently installing a sliding block 63 and a pressure spring 64, and the stop block 62 and the base 61 are fixedly connected through the screw 65. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.

Example 4:

on the basis of the above embodiments, the structure of the support rods 5 is further limited, as shown in fig. 4 and 5, a limit block is arranged at one end of each support rod 5 hinged to the outer wall of the shaft sleeve 3, and the support rods 5 can only swing up and down at a limited position under the action of the limit block. Because some parts aperture from top to bottom is less, like part a9, its inside cylinder that stretches out still that still is provided with, in order to avoid causing the interference to bracing piece 5 to these cylinders, consequently set up bracing piece 5 in particular and articulate the outer wall at axle sleeve 3, bracing piece 5 alright luffing motion like this, reduce its shared space that gets into the part inside, simultaneously in order to guarantee that the screw 7 of every bracing piece 5 tip screw fixing device 6 fixed is in the coplanar, set up the stopper in particular, it is the bracing piece 5 can only be at the limiting position swing, and under the effect of stopper, when bracing piece 5 is firm, can guarantee that the screw 7 of all bracing pieces 5 tip screw fixing device 6 fixed is in the coplanar, ensure the installation of part. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.

Example 5:

in the embodiment, the structure of the upright post 2 is further limited on the basis of the above embodiments, as shown in fig. 3 and 8, the upright post 2 is a hollow tube, the top of the upright post is movably nested with a press block 8, and the lower part of the upright post is fixedly connected with the base 1 through bolts. Because the installation, guarantee that all screws 7 can pass the through-hole of two parts simultaneously, consequently need when proofreading two part through-hole positions, need compress tightly axle sleeve 3 and make downstream, make two parts temporarily separate, compression spring 4 is in compression state this moment, but because axle sleeve 3 nestification is at stand 2, consequently, it is more difficult to suppress it, consequently add briquetting 8 very much, be used for suppressing axle sleeve 3, and simultaneously, stand 2 is the hollow tube, 8 inside settings of briquetting are because the lug that the stand 2 inner tubes match, can guarantee the compression position to axle sleeve 3 like this, avoid pressure too big to cause the damage to axle sleeve 3 or compression spring 4. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.

Example 6:

in this embodiment, the structure of the shaft sleeve 3 is further limited on the basis of the above embodiments, as shown in fig. 3 and 8, the shaft sleeve 3 is composed of an upper insert block and a lower support block, the support rod 5 is connected to the outer wall of the upper insert block, the lower support block is provided with a plurality of adjusting bolts perpendicular to the middle upright column, and the upper insert block and the lower support block are fixedly connected through fixing bolts. . Because the atress of axle sleeve 3 is great relatively, and the functional structure who bears is more, consequently sets up it into two parts very much, and the supporting shoe of its upper portion abaculus mainly connects bracing piece 5, and the supporting shoe of lower part then contacts with compression spring 4, and the supporting shoe sets up the regulation and control bolt, avoids axle sleeve 3 whole too easily to slide on stand 2, influences the connection installation of part, also makes things convenient for the dismantlement and the installation process to whole device simultaneously, and later maintenance is also comparatively easy. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.

Example 7:

in this embodiment, on the basis of the above embodiments, the structure of the base 1 is further defined, as shown in fig. 1, fig. 2, fig. 3, fig. 7, and fig. 8, the base 1 is a circular disk, the center of the circular disk is located on the axis of the column 2, the upper portion of the base 1 is provided with a structure of fixing parts, and the lower portion of the base 1 is provided with at least three leveling nuts. The structure of the base 1 is optimized to better complete the installation and fixation of parts and improve the installation efficiency of the parts. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.

It will be appreciated that the working principles and processes of the device structure for accurate positioning of screw assemblies according to one embodiment of the present invention, such as the compression spring 4 and the screw, are well known in the art and will not be described in detail herein.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The device for accurately positioning the screw assembly is characterized by comprising a base (1), wherein an upright post (2) is arranged in the middle of the base (1), a shaft sleeve (3) and a compression spring (4) which can reciprocate up and down are nested on the upright post (2), one end of the compression spring (4) is in contact with the bottom of the shaft sleeve (3), and the other end of the compression spring is in contact with the base (1); articulated on the outer wall of axle sleeve (3) have a plurality of bracing pieces (5), bracing piece (5) are even ring array with the axis of axle sleeve (3) and distribute, and every bracing piece (5) other end all is provided with screw fixing device (6), screw fixing device (6) can the activity fix the spiral shell head part of screw (7) to the double-screw bolt that keeps screw (7) is in vertical state.

2. The device for accurately positioning the screw assembly according to claim 1, wherein the screw fixing device (6) comprises a base (61), a groove is formed in the base (61), a sliding groove is formed at one end of the groove, a stopper (62) for closing the sliding groove is arranged at the end of the base (61), a sliding block (63) is arranged in the sliding groove, a compression spring (64) is nested at one end of the sliding block (63), the other end of the sliding block and the groove form a cavity for accommodating the screw head of the screw (7), and one end of the compression spring (64) is connected with the sliding block (63) while the other end of the compression spring is connected with the stopper (62).

3. The device for accurately positioning the screw assembly according to claim 2, wherein the base (61) is provided at a lower portion thereof with a slot for engaging with the support rod (5), one end of the base (61) is fixedly connected to the stopper (62) by at least one screw (65), and the other end of the base is fixedly connected to the support rod (5) by at least one screw (65).

4. A device for accurately positioning a screw assembly according to any one of claims 1 to 3, wherein each support rod (5) is provided with a limiting block at one end hinged to the outer wall of the shaft sleeve (3), and the support rod (5) can only swing up and down at a limited position under the action of the limiting block.

5. A device for accurately positioning a screw assembly according to any one of claims 1-3, wherein the upright (2) is a hollow tube, the top of the upright is movably nested with a pressing block (8), and the lower part of the upright is fixedly connected with the base (1) through a bolt.

6. A device for accurate positioning of a screw assembly according to any of claims 1-3, wherein the bushing (3) is formed by an upper insert and a lower support block, the support rod (5) is connected to the outer wall of the upper insert, the lower support block is provided with a plurality of adjusting bolts perpendicular to the middle post, and the upper insert and the lower support block are fixedly connected by means of fixing bolts.

7. A device for accurate positioning of a screw assembly according to any of claims 1 to 3, wherein the base (1) is a disc with its centre located on the axis of the post (2), and the upper part of the base (1) is provided with a structure for fixing parts and the lower part of the base (1) is provided with at least three leveling nuts.