CN111089107A

CN111089107A - Connecting device and mounting method thereof

Info

Publication number: CN111089107A
Application number: CN201911345722.XA
Authority: CN
Inventors: 李松; 刘建军; 黄爽
Original assignee: Beijing Xinli Machinery Co Ltd
Current assignee: Beijing Xinli Machinery Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-05-01

Abstract

The invention provides a connecting device which comprises an upper clamping plate, a lower clamping plate, a screw and a nut, wherein the screw sequentially penetrates through the lower clamping plate and the upper clamping plate from bottom to top and is connected with the nut; the method is characterized in that: the screw between the upper clamping plate and the lower clamping plate is also provided with an elastic ring which can tightly clamp the screw. No matter how the nut is installed, the nut can be conveniently installed from the upper part without being fixed by hands, and the installation operation is convenient.

Description

Connecting device and mounting method thereof

Technical Field

The invention relates to the technical field of connecting pieces, in particular to a connecting device for connecting edges of two different objects, which can be fixed on the connected objects before the installation is finished, does not need the auxiliary fixation of hands, can conveniently remove redundant protruding parts and reduces the interference of the device on other objects.

Background

An attachment device as shown in fig. 1, which is used for attaching the edges of objects, such as the edges of upper and lower covers of a sealing conveyor belt, comprises an upper plate a1, a lower plate a2, a bolt A3 and a nut a4, wherein the upper plate a1 and the lower plate a2 are square flat plate structures, and the bolt passes through the upper plate a1 and the lower plate a2 respectively and is fastened by the nut a 4. Between the upper a1 and lower a2 plates are the upper and lower edges of the clamped device. When aiming at flexible edges, the lower surface of the upper plate A1 and the upper surface of the lower plate A2 are respectively provided with a plurality of anti-slip teeth A6 which prevent the connecting device from moving.

The connecting device has simple structure, reliable performance and more convenient installation and operation. The following problems are still found in practical use.

1. It is also less convenient than before when installed.

1 if the installation is positive, the upper plate A1 and the bolt A3 are firstly installed, and the lower plate A2 and the nut A4 are installed. Although the upper plate a1 and the bolt A3 are not required to be fixed after installation, since the lower plate a2 and the nut a4 are installed from below, if the space is narrow, the view and the operation are obstructed, and the installation is inconvenient.

2 if the upper plate A1 and the bolt A3 are inserted from below and the lower plate A2 and the nut A4 are installed from above, the lower plate A2 and the nut A4 need to be held by hand to prevent them from falling off.

If the cleaning device such as the brush or the scraper blade is reversely mounted, the bolt can protrude, and the cleaning device such as the brush or the scraper blade can be abnormally abraded due to the protruding bolt, so that the dust removal effect is influenced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows:

1. the existing connecting device is inconvenient to install and operate in forward installation or direction installation;

2. when the existing connecting device is installed in the direction, the bolts protrude too much, and cleaning devices such as brushes or scrapers are abnormally abraded and influence the dust removal effect.

In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:

the invention provides a connecting device which comprises an upper clamping plate, a lower clamping plate, a screw and a nut, wherein the screw sequentially penetrates through the lower clamping plate and the upper clamping plate from bottom to top and is then connected with the nut; the method is characterized in that: the screw between the upper clamping plate and the lower clamping plate is also provided with an elastic ring which can tightly clamp the screw.

Furthermore, the tail part of the screw body of the screw is additionally provided with an easy-to-break conical tail, the main body structure of the easy-to-break conical tail is the same as the original tail part of the screw body, and a connecting structure which is partially bonded is adopted at the joint of the easy-to-break conical tail and the screw body so as to facilitate breaking of the easy-to-break bonding part.

Furthermore, the partially bonded connecting structure is one of the following structures:

A. the bonding part of the easy-to-break bonding part and the tail part of the screw body is of a truncated cone structure, and the lower end surface of the truncated cone structure is bonded with the tail part of the screw body;

or B, the bonding position of the easy-folding bonding part and the tail part of the screw body is a table structure extending from two opposite side edges of the tail end face of the easy-folding bonding part, and the lower end face of the table structure is bonded with the tail part of the screw body;

or C, the bonding position of the easy-folding bonding part and the tail part of the screw body is of two columnar structures extending out of the middle part of the tail end face of the easy-folding bonding part. The lower end face of the columnar structure is bonded with the tail of the screw body.

Furthermore, a rotation stopping part is arranged between the screw head and the screw body, and the rotation stopping part is of a polygonal column structure; the through hole for passing the screw in the lower clamping plate is a polygonal through hole matched with the rotation stopping part.

Further, an upper plate concave structure which is concave downwards and is used for accommodating the nut is arranged on the upper clamping plate;

the lower clamping plate is provided with a screw head lower plate sunken structure which is sunken upwards and used for accommodating the nut.

Furthermore, a rotation stopping part is arranged between the screw head and the screw body, and the rotation stopping part is of a polygonal column structure; the through hole for penetrating the screw in the lower clamping plate is a polygonal through hole matched with the rotation stopping part, and the polygonal through hole is arranged in the middle of the lower plate sunken structure.

The invention also provides a method for mounting the connecting device,

firstly, a screw penetrates through a lower clamping plate, and anti-skidding teeth of the lower clamping plate face upwards;

secondly, penetrating a screw from bottom to top through the edges of equipment to be connected and fixed, such as the edges of an upper cover and a lower cover of a sealing conveyor belt;

thirdly, sleeving an elastic ring on the exposed screw sleeve, pushing the elastic ring to the lowest part of the exposed screw, and connecting and fixing the elastic ring to the edge of the propping equipment, wherein at the moment, the hand for fixing the screw and the lower clamping plate can be loosened, and the fixing screw and the lower clamping plate cannot fall off under the blocking of the elastic ring, so that the next step of installation is facilitated;

and step four, mounting an upper clamping plate and screwing the nut for the last time.

Further, the following steps are added after the fourth step of the installation method:

and step five, after the nut is screwed down, breaking the easy-to-break bonding part by using a special spanner, and finishing the installation.

Still further, during the installation, in step one time, need notice, will the rotation stopping portion inserts the polygon through-hole realizes that the screw is stopped changeing, does benefit to the screw nut of screwing up.

The invention has the beneficial effects that:

1. when the connecting device is reversely installed, the upper plate and the screw are fixed through the elastic ring sleeved on the screw, the nut can be installed from the upper part without auxiliary fixation of hands, and the installation operation is convenient;

2. when the connecting device is installed in the forward direction, the special wrench is transformed from the sleeve, and can be conveniently screwed after being sleeved in from the easy-to-break bonding part, so that the operation is convenient; because the easy book bonding portion length that special spanner emboliaed is fixed, can not appear: if the existing connecting device can cause the problems that the bolt is too long, the sleeve cannot be used, or a common hexagonal wrench is used for inconvenient and accurate positioning of the nut.

3. If the reverse installation, only need screw up the nut at special spanner after, directly break off easily and roll over bonding portion with special spanner, just can be convenient get rid of the screw and surpass the part, reduce the wearing and tearing to cleaning device such as brush or scraper blade, the dust removal quality that also improves.

Drawings

FIG. 1 is a schematic structural diagram of a conventional connecting device;

in the figure, A1-upper plate, A2-lower plate, A3-bolt, A4-nut, A5-bolt head, A6-antiskid tooth.

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

fig. 3 is a schematic structural view of the upper splint 1;

fig. 4 is a schematic structural view of the lower splint 2;

fig. 5 is a structural diagram of the screw 3, the easy-to-break bonding portion 305 has a truncated cone structure,

fig. 6 is a schematic structural view of the screw 3, in which the easy-to-fold bonding portion 305 is a table structure extending from two opposite sides of the tail end surface of the easy-to-fold bonding portion 305;

fig. 7 is a schematic structural view of the screw 3, in which the easy-to-fold bonding portion 305 is two columnar structures extending from the middle of the tail end surface of the easy-to-fold bonding portion 305;

fig. 8 is a schematic structural view of the nut 4;

FIG. 9 is a schematic structural view of the elastic ring 9;

in the figure, the position of the upper end of the main shaft,

1-an upper clamping plate, 101-an upper plate concave structure,

2-lower splint, 201-lower splint sunken structure, 202-polygonal through hole,

3-screw, 301-screw head, 302-rotation stopping part, 303-screw body, 304-easy-folding conical tail, 305-easy-folding bonding part,

4-nut, 401-nut head, 402-nut body, 403-special spanner adapting groove,

5-the elastic ring is arranged on the upper surface of the shell,

6-anti-slip teeth.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments. Examples of which are illustrated in the accompanying drawings, the embodiments described with reference to the drawings being illustrative only and not limiting of the invention.

Example 1

Referring to fig. 2, 8 and 9, the connecting device comprises an upper clamping plate 1, a lower clamping plate 2, a screw 3 and a nut 4, wherein the screw 3 sequentially penetrates through the lower clamping plate 2 and the upper clamping plate 1 from bottom to top and is connected with the nut 4; the screw 3 between the upper clamping plate 1 and the lower clamping plate 2 is also provided with an elastic ring 5 which can tightly clamp the screw 3.

In order to further secure the connecting device, a plurality of protruding anti-slip teeth 6 are also designed on the lower surface of the upper clamping plate 1 and the lower surface of the lower clamping plate 2.

The nut 4 comprises a nut head 401 which is wide than a nut body 402, and a special spanner adapting groove 403 for clamping a special spanner is formed in the upper surface of the nut head 401. The nut head 401 may be made in a hexagonal shape as in fig. 7, which would allow the use of a conventional wrench during installation.

The special spanner is modified by a sleeve, and the contact surface of the sleeve and the nut 4 is designed into a convex structure matched with the special spanner adapting groove 403.

When the device is installed,

firstly, a screw 3 penetrates through a lower clamping plate 2, and an anti-skidding tooth 6 of the lower clamping plate 2 faces upwards;

secondly, the screw 3 penetrates through the edges of the equipment to be connected and fixed, such as the edges of an upper cover and a lower cover of a sealing conveyor belt, from bottom to top;

thirdly, sleeving the exposed screw 3 on an elastic ring 5, pushing the elastic ring 5 to the lowest part of the screw 3 exposed out of the screw 3, and connecting and fixing the elastic ring 5 to the edge of the propping device, wherein at the moment, the hand for fixing the screw 3 and the lower clamping plate 2 can be loosened, and the fixing screw 3 and the lower clamping plate 2 cannot fall off under the blocking of the elastic ring 5, so that the next step of installation is facilitated;

and step four, mounting the upper clamping plate 1 and screwing the nut 4 for the last time.

The coupling device of this embodiment has the advantage that it is convenient to install in both forward and reverse directions, because the auxiliary fixing screw 3 is not inserted through the lower jaw 2 by hand at the time of reverse installation,

or when the screw driver is installed in the forward direction, the screw driver can be conveniently screwed down after the screw is sleeved by using the sleeve-type special wrench, so that the screw driver is convenient to position and install and operate.

Example 2

In addition to embodiment 1, in order to solve the problems that the screw 3 protrudes too much, and the cleaning device such as a brush or a scraper is not normally worn and affects the dust removing effect, the screw 3 is improved as follows.

An easy-to-break conical tail 304 is added at the tail part of the screw body 303 of the screw 3, the main structure of the easy-to-break conical tail 304 is the same as the original tail part of the screw body 303, but a connecting structure which is partially bonded is adopted at the joint of the easy-to-break conical tail 304 and the screw body 303, so that the easy-to-break bonding part 305 is conveniently broken. Specifically, the easy-to-fold bonding portion 305 can be bonded to the tail portion of the screw body 303 in the following ways:

A. as shown in fig. 5a, b and c, the easy-to-break bonding portion 305 has a truncated cone structure, and the lower end surface of the truncated cone structure is bonded to the tail portion of the screw body 303.

B. As shown in fig. 6a, b and c, the easy-folding adhesive portion 305 is a table structure extending from opposite sides of a tail end surface of the easy-folding adhesive portion 305, and a lower end surface of the table structure is adhered to a tail portion of the screw body 303.

C. As shown in fig. 7a, b, and c, the easy-folding adhesive portion 305 is two column structures extending from the middle of the tail end of the easy-folding adhesive portion 305. The lower end surface of the columnar structure is bonded with the tail part of the screw body 303.

The above-described structure allows the easy-to-break adhesive portion 305 to be easily broken at the joint by forming a lever structure with a small adhesive surface by only partially adhering the easy-to-break adhesive portion 305 to the tail portion of the screw body 303.

The breaking force is designed to be 15-25N when applied to the tail end of the frangible bond 305, which ensures that the frangible bond 305 is not likely to break abnormally during transportation and installation, and is ultimately easily broken by a special wrench or other tool such as pliers.

The screw body 303 can be determined according to the needs, specifically, the length of the screw body 303 needed after the nut 4 is screwed down is determined, and the length and the structure of the easy-to-break tapered tail 304 and the easy-to-break bonding part 305 are determined, so that the easy-to-break tapered tail 304 and the easy-to-break bonding part 305 only need to be produced into determined models, the production cost is reduced, and the special spanner can be matched with screws 3 with different lengths.

At the time of installation, the following steps are added after the fourth step of the installation method in the embodiment 1:

and step five, after the nut 4 is screwed, the easy-to-break bonding part 305 is broken off by a special spanner, and the installation is finished.

Example 3

If the edges of the devices to be connected are flexible, or space may be reserved for accommodating the screw head 301 and the nut 4. Then, in order to make the screw head 301 and the nut 4 not protrude from the device edge surface as much as possible, the upper and

lower clamping plates

1 and 2 are modified as follows based on embodiment 1 or 2:

as shown in fig. 3, an upper plate recess structure 101 which is recessed downward and is used for accommodating the nut 4 is designed on the upper clamping plate 1;

as shown in fig. 4, an upwardly recessed structure 201 is formed on the lower plate 2 for receiving the screw head 301 of the nut 4.

This allows the connecting device to further reduce the height of the edge of the protruding device. When other objects need to pass through the connecting device, the adverse effect on the connecting device is reduced.

Example 4

When the screw head 301 and the screw body 303 are circular in shape, the screw 3 is easy to slip at the end when the nut 4 is screwed, and rotates along with the nut 4, which is not beneficial to screwing.

Therefore, on the basis of examples 1 to 3, the following improvements are made:

referring to fig. 2 and 5-7, a rotation stop part 302 is designed between a screw head 301 and a screw body 303, and the rotation stop part 302 is in a polygonal column structure.

Correspondingly:

1 the through hole of the lower plate 2 for passing the screw 3 in the

embodiments

1 and 2 is a polygonal through hole 202 matched with the rotation stopper 302.

2 in embodiment 3, the polygonal through hole 202 is in the middle of the lower plate recess structure 201.

In the present embodiment, the rotation stopping portion 302 is a square column, and the polygonal through hole 202 is a square through hole matching with the square column.

During installation, in step one, it is necessary to pay attention to insert the rotation stopping portion 302 into the polygonal through hole 202 to realize rotation stopping of the screw 3, which is beneficial to tightening the nut 4.

The present specification and figures are to be regarded as illustrative rather than restrictive, and it is intended that all such alterations and modifications that fall within the true spirit and scope of the invention, and that all such modifications and variations that fall within the true spirit and scope of the invention are desired to be protected by the following claims.

Claims

1. The connecting device comprises an upper clamping plate (1), a lower clamping plate (2), a screw (3) and a nut (4), wherein the screw (3) sequentially penetrates through the lower clamping plate (2) and the upper clamping plate (1) from bottom to top and is connected with the nut (4); the method is characterized in that: the screw (3) between the upper splint (1) and the lower splint (2) is also provided with an elastic ring (5) which can tighten the screw (3).

2. The connection device of claim 1, wherein: the tail part of the screw body (303) of the screw (3) is additionally provided with an easy-to-break conical tail (304), the main body structure of the easy-to-break conical tail (304) is the same as the original tail part of the screw body (303), and a connecting structure which is partially bonded is adopted at the joint of the easy-to-break conical tail (304) and the screw body (303) so as to conveniently break the easy-to-break bonding part (305).

3. The connection device of claim 2, wherein: the partially bonded connecting structure is one of the following structures:

A. the bonding part of the easy-to-break bonding part (305) and the tail part of the screw body (303) is of a truncated cone structure, and the lower end surface of the truncated cone structure is bonded with the tail part of the screw body (303);

or the bonding position of the easy-to-fold bonding part (305) and the tail part of the screw body (303) is a table structure extending from two opposite side edges of the tail end surface of the easy-to-fold bonding part (305), and the lower end surface of the table structure is bonded with the tail part of the screw body (303);

or the bonding position of the easy-to-fold bonding part (305) and the tail part of the screw body (303) is two columnar structures extending out of the middle part of the tail end face of the easy-to-fold bonding part (305), and the lower end face of each columnar structure is bonded with the tail part of the screw body (303).

4. A connection device according to any of claims 1-3, characterized in that:

a rotation stopping part (302) is arranged between the screw head (301) and the screw body (303), and the rotation stopping part (302) is of a polygonal column structure; the through hole for passing the screw (3) in the lower clamping plate (2) is a polygonal through hole (202) matched with the rotation stopping part (302).

5. A connection device according to any of claims 1-3, characterized in that:

an upper plate concave structure (101) which is concave downwards and is used for accommodating a nut (4) is arranged on the upper clamping plate (1);

the lower clamping plate (2) is provided with an upward concave screw head (301) for accommodating the nut (4) and a lower plate concave structure (201).

6. The connecting device as set forth in claim 5,

a rotation stopping part (302) is arranged between the screw head (301) and the screw body (303), and the rotation stopping part (302) is of a polygonal column structure; the through hole used for penetrating the screw (3) in the lower clamping plate (2) is a polygonal through hole (202) matched with the rotation stopping part (302), and the polygonal through hole (202) is arranged in the middle of the lower plate sunken structure (201).

7. The mounting method of the connecting device is characterized in that:

firstly, a screw (3) penetrates through a lower clamping plate (2), and an anti-skidding tooth (6) of the lower clamping plate (2) faces upwards;

secondly, penetrating the screw (3) from bottom to top through the edges of equipment to be connected and fixed, such as the edges of an upper cover and a lower cover of a sealing conveyor belt;

thirdly, sleeving the exposed screw (3) with an elastic ring (5), pushing the elastic ring (5) to the lowest part of the exposed screw (3) of the screw (3), and connecting and fixing the elastic ring (5) to the edge of the propping device, wherein at the moment, the hand for fixing the screw (3) and the lower clamping plate (2) can be loosened, and the fixing screw (3) and the lower clamping plate (2) cannot fall off under the blocking of the elastic ring (5), so that the next-step installation is facilitated;

and step four, installing the upper clamping plate (1) and screwing the nut (4) for the last time.

8. The method of mounting a connecting device according to claim 7, wherein:

the following steps are added after the fourth step of the installation method:

and step five, after the nut (4) is screwed, breaking the easy-to-break bonding part (305) by using a special spanner, and finishing the installation.

9. The method of mounting a connecting device according to claim 7 or 8, wherein: during installation, in the first step, attention needs to be paid to inserting the rotation stopping part (302) into the polygonal through hole (202) to realize rotation stopping of the screw (3), so that the nut (4) can be screwed conveniently.